Air suspension system

Abstract

The utility model discloses an air suspension system which comprises a vehicle frame used for installing a vehicle body, an axle housing used for installing wheels, and an air spring, a shock absorber, a connecting rod frame and a thrust module which are connected between the vehicle frame and the axle housing, and due to the fact that the thrust module is standardized, the appropriate thrust module can be matched according to different working condition requirements, and the air suspension system has the advantages of being simple in structure and convenient to use. And therefore, the light weight of the complex suspension adjustment work is realized.

Description

[0001] This application claims priority to Chinese Patent Application No. 202311352112.9, filed on October 19, 2023.

[0002] This application claims priority to Chinese Patent Application No. 202420542179.2, filed on March 20, 2024. TECHNICAL FIELD

[0003] The present application relates to the technical field of automobiles, and in particular relates to an air suspension system. BACKGROUND

[0004] The air suspension system in the prior art comprises a vehicle frame for mounting a vehicle body, an axle housing for mounting a vehicle wheel, and an air spring and a shock absorber connected between the vehicle frame and the axle housing.

[0005] In the implementation of the prior art, the inventors have found that:

[0006] The comfort of a vehicle ride is closely related to the adjustment of a suspension. Specifically, the adjustment of the suspension is closely related to the stability, anti-rollover ability, braking ability, handling ability, and impact resistance of the vehicle. The adjustment of the suspension is a system project with a large amount of work and is highly dependent on the adjustment experience of corresponding operating personnel.

[0007] Therefore, there is a need to provide a technical solution to the complexity of the suspension adjustment process. CONTENT OF THE UTILITY MODEL

[0008] The purpose of the present application is to provide an air suspension system to solve the technical problem of the complexity of the suspension adjustment process.

[0009] To achieve the above purpose, the present application provides an air suspension system, comprising a vehicle frame for mounting a vehicle body, an axle housing for mounting a vehicle wheel, and an air spring, a shock absorber, a connecting rod frame, and a thrust module connected between the vehicle frame and the axle housing.

[0010] The vehicle frame comprises a vehicle frame longitudinal beam.

[0011] The axle housing comprises a drive axle housing.

[0012] The drive axle housing comprises an axle housing body, a half shaft sleeve on both sides of the axle housing body, a first supporting arm extending from the half shaft sleeve along the periphery of the half shaft sleeve in a first direction, and a first longitudinal pushing arm extending from the half shaft sleeve along the periphery of the half shaft in a second direction opposite to the first direction.

[0013] The connecting rod frame comprises a first connecting rod frame.

[0014] The first connecting rod frame is connected to the vehicle frame longitudinal beam at one end and pivotally connected to the first longitudinal push arm at the other end.

[0015] The shock absorber comprises a first shock absorber.

[0016] The first shock absorber is connected to the vehicle frame longitudinal beam at one end and connected to the first longitudinal push arm at the other end.

[0017] The air spring comprises a first air spring distributed in a first longitudinal position.

[0018] The first air spring is mounted to the first bracket on one side and mounted to the vehicle frame longitudinal beam on the other side.

[0019] The thrust module has a type identification feature representing performance, and the type identification feature of the thrust module matches the suspension performance requirement of the vehicle.

[0020] The thrust module comprises a first thrust module.

[0021] The first thrust module is connected to the axle body on one side and connected to the vehicle frame longitudinal beam transversely and vertically on the other side.

[0022] The application also provides an air suspension system, comprising a vehicle frame for mounting a vehicle body, an axle for mounting a vehicle wheel, and an air spring, a shock absorber, a connecting rod frame and a thrust module connected between the vehicle frame and the axle;

[0023] The vehicle frame comprises a vehicle frame longitudinal beam and a vehicle frame cross beam transversely connecting the vehicle frame longitudinal beam.

[0024] The axle comprises a drive axle.

[0025] The drive axle comprises an axle body, a half shaft sleeve on both sides of the axle body, a first bracket extending from the half shaft sleeve along the periphery of the half shaft sleeve in a first direction, and a first longitudinal push arm extending from the half shaft sleeve along the periphery of the half shaft in a second direction opposite to the first direction.

[0026] The connecting rod frame comprises a first connecting rod frame.

[0027] The first connecting rod frame is connected to the vehicle frame longitudinal beam at one end and pivotally connected to the first longitudinal push arm at the other end.

[0028] The shock absorber comprises a first shock absorber.

[0029] The first shock absorber is connected to the vehicle frame longitudinal beam at one end and connected to the first longitudinal push arm at the other end.

[0030] The air spring comprises a first air spring distributed in a first longitudinal position.

[0031] The first air spring is mounted to the first bracket on one side and mounted to the vehicle frame longitudinal beam on the other side.

[0032] The thrust module has a type identification feature that characterizes performance, and the type identification feature of the thrust module is matched with the vehicle's suspension performance requirements.

[0033] The thrust module includes a first thrust module;

[0034] The first thrust module is connected to the axle housing body on one side and to the frame crossbeam on the other side.

[0035] This application also provides an air suspension system, including a frame for mounting the vehicle body, an axle housing for mounting the wheels, and an air spring, a shock absorber, and a linkage frame connected between the frame and the axle housing.

[0036] The vehicle frame includes longitudinal beams;

[0037] The bridge housing includes a drive bridge housing;

[0038] The drive axle housing includes a housing body, a half-shaft sleeve located on both sides of the housing body, a first support arm extending from the half-shaft sleeve along the periphery of the half-shaft sleeve in a first direction, and a first longitudinal push arm extending from the half-shaft sleeve along the periphery of the half-shaft in a second direction away from the first direction.

[0039] The linkage frame includes a first linkage frame;

[0040] One end of the first linkage frame is connected to the longitudinal beam of the vehicle frame, and the other end is pivotally connected to the first longitudinal push arm;

[0041] The vibration damper includes a first vibration damper;

[0042] One end of the first shock absorber is connected to the longitudinal beam of the vehicle frame, and the other end is connected to the first longitudinal push arm;

[0043] The air spring includes a first air spring distributed at a first position in the longitudinal direction;

[0044] The first air spring is mounted on one side of the first support arm and on the other side of the vehicle frame longitudinal beam;

[0045] The first linkage frame extends integrally from the longitudinal beam of the vehicle frame into a fork-shaped arm;

[0046] The first longitudinal push arm is provided with a cylindrical arm support at its end;

[0047] The first linkage frame also includes an arm shaft;

[0048] The tubular arm support is embedded in the fork-shaped arm, and the arm shaft passes through the tubular arm support and is engaged in the fork-shaped arm.

[0049] This application also provides an air suspension system, including a frame for mounting the vehicle body, an axle housing for mounting the wheels, and an air spring, a shock absorber, a linkage frame, and a thrust module connected between the frame and the axle housing.

[0050] The frame includes frame longitudinal beams and frame crossbeams that connect the frame longitudinal beams laterally;

[0051] The bridge housing includes a drive bridge housing;

[0052] The drive axle housing includes a housing body, a half-shaft sleeve located on both sides of the housing body, a first support arm extending from the half-shaft sleeve along the periphery of the half-shaft sleeve in a first direction, and a third support arm extending from the half-shaft sleeve along the periphery of the half-shaft in a second direction away from the first direction.

[0053] The linkage frame includes a third linkage frame;

[0054] The third linkage frame includes a first frame arm and a first rotating arm pivotally connected to the first frame arm;

[0055] The other end of the first frame arm, away from the first rotating arm, is connected to the longitudinal beam of the vehicle frame.

[0056] The other end of the first rotating arm, away from the first frame arm, is connected to the bridge housing body.

[0057] The vibration damper includes a first vibration damper;

[0058] One end of the first shock absorber is connected to the longitudinal beam of the vehicle frame, and the other end is connected to the third support arm;

[0059] The air spring includes a first air spring distributed at a first longitudinal position and a third air spring distributed at a third longitudinal position;

[0060] The first air spring is mounted on one side of the first support arm and on the other side of the vehicle frame longitudinal beam;

[0061] The third air spring is mounted on one side of the third support arm and on the other side of the vehicle frame longitudinal beam;

[0062] The thrust module has a type identification feature that characterizes performance, and the type identification feature of the thrust module is matched with the vehicle's suspension performance requirements.

[0063] The first thrust module is connected to the axle housing body on one side and to the frame crossbeam on the other side.

[0064] The technical effects and advantages of this invention are as follows:

[0065] This application provides a standardized thrust module. The modularity and standardization of the thrust module greatly reduces the suspension tuning work, allowing for the direct selection of an air suspension system within the required parameter range based on the suspension performance requirements. This provides a lightweight technical solution for suspension tuning. Attached Figure Description

[0066] The accompanying drawings, which are included to provide a further understanding of this application and form part of this application, illustrate exemplary embodiments and are used to explain this application, but do not constitute an undue limitation of this application. In the drawings:

[0067] Figure 1 This is a structural schematic diagram of an air suspension system provided in an embodiment of this application.

[0068] Figure 2 for Figure 1 A schematic diagram of the structure of the drive axle housing.

[0069] Figure 3 This is a structural schematic diagram of a cross-section of a support arm provided in an embodiment of this application.

[0070] Figure 4 This is a structural schematic diagram of a second type of support arm cross-section provided in an embodiment of this application.

[0071] Figure 5 This is a structural schematic diagram of a third type of support arm cross-section provided in an embodiment of this application.

[0072] Figure 6 This is a structural schematic diagram of the fourth type of support arm cross-section provided in the embodiments of this application.

[0073] Figure 7 This is a structural schematic diagram of the fifth type of support arm cross-section provided in the embodiments of this application.

[0074] Figure 8 This is a schematic diagram of the structure of the half-shaft sleeve provided in an embodiment of this application.

[0075] Figure 9 This is a schematic diagram of the structure of a drive axle housing for mounting a drum brake, provided in an embodiment of this application.

[0076] Figure 10 This is a schematic diagram of the structure of a drive axle housing for mounting a disc brake, provided in an embodiment of this application.

[0077] Figure 11 This is a structural schematic diagram of an air suspension system with a drive axle housing and a trailer axle housing provided in an embodiment of this application.

[0078] Figure 12 This is a structural schematic diagram of another air suspension system provided in an embodiment of this application.

[0079] Figure 13 for Figure 12 A schematic diagram of the structure of the drive axle housing.

[0080] Figure 14 This is a schematic diagram of another air suspension system with a drive axle housing and a trailer axle housing provided in an embodiment of this application.

[0081] Figure 15 This is a schematic diagram of another air suspension system with a drive axle housing and a trailer axle housing provided in an embodiment of this application.

[0082] Figure 16 for Figure 15 A schematic diagram of the structure of the drive axle housing.

[0083] Figure 17 This is a structural schematic diagram of another air suspension system provided in an embodiment of this application.

[0084] Figure 18 for Figure 17 A schematic diagram of the structure of the drive axle housing.

[0085] Figure 19 This is a structural schematic diagram of an air suspension system for a thrust module provided in an embodiment of this application.

[0086] Figure 20 A schematic diagram of the air suspension system of the second thrust module provided in the embodiments of this application.

[0087] Figure 21 A schematic diagram of the air suspension system of the third thrust module provided in the embodiments of this application.

[0088] Figure 22 for Figure 21 A schematic diagram of the structure of the medium thrust module.

[0089] Figure 23 This is a schematic diagram of another air suspension system with a drive axle housing and a trailer axle housing provided in an embodiment of this application.

[0090] Figure 24 This is a schematic diagram of another air suspension system with a drive axle housing and a trailer axle housing provided in an embodiment of this application.

[0091] The reference numerals in the figure are as follows:

[0092] 100 Air suspension system 11 Chassis

[0093] 111 Frame longitudinal beam 112 Frame cross beam

[0094] 1121 First side mounting bracket 1122 Second side mounting bracket

[0095] 1123 Third side mounting bracket 1124 Fourth side mounting bracket

[0096] 12 Axle Housing 121 Drive Axle Housing

[0097] 1211 Bridge housing body 1212 Half-shaft sleeve

[0098] 1213 First support arm 1214 First longitudinal push arm

[0099] 1215 First central mounting bracket 1216 Third central mounting bracket

[0100] 1217 Fourth Central Mounting Mount; 1218 Fifth Mounting Mount

[0101] 1219 Sixth mounting bracket; 1201 Seventh mounting bracket

[0102] 1202 Eighth mounting bracket; 1203 Third support arm

[0103] 122 Trailer axle housing; 1221 Axle shaft

[0104] 1222 Second support arm 1223 Second longitudinal push arm

[0105] 1224 Fourth support arm 123 Lateral connecting beam

[0106] 124 Brake base plate 13 Air spring

[0107] 131 First air spring 132 Second air spring

[0108] 133 Third air spring 134 Fourth air spring

[0109] 14 Vibration damper 141 First vibration damper

[0110] 142 Second vibration damper 143 Third vibration damper

[0111] 15 Linkage Frame 151 First Linkage Frame

[0112] 1511 Forked Arm 1512 Arm Axis

[0113] 152 Second Linkage Frame 153 Third Linkage Frame

[0114] 1531 First frame arm 1532 First rotating arm

[0115] 1533 Wing Plate 1534 Three-Dimensional Suite

[0116] 1535 arm sleeve 1536 arm sleeve shaft

[0117] 154 Fourth Linkage Frame 1541 First Link Arm

[0118] 1542 Second lever arm 1543 Tubular arm support

[0119] 1544 Three-sided frame support, 1545 rod shaft

[0120] 155 Fifth Linkage Frame 1551 Second Rotating Arm

[0121] 16 Thrust Module 161 First Thrust Module

[0122] 1611 First central rotating sleeve; 1612 First central mounting shaft; 1613 First side rod; 1614 Second side rod

[0123] 1615 First side rotating sleeve; 1616 First side mounting shaft

[0124] 1617 Second side rotating sleeve; 1618 Second side mounting shaft

[0125] 1621 Third side pole 1622 Fourth side pole

[0126] 1623 Third Central Rotary Sleeve; 1624 Third Central Mounting Shaft

[0127] 1625 Third side rotating sleeve; 1626 Third side mounting shaft

[0128] 1627 Fourth Central Rotary Sleeve; 1628 Fourth Central Mounting Shaft

[0129] 1629 Fourth side rotating sleeve; 1620 Fourth side mounting shaft

[0130] 1631 Fifth Rotary Sleeve; 1632 Fifth Mounting Shaft

[0131] 1633 Sixth Rotary Sleeve; 1634 Sixth Mounting Shaft

[0132] 1635 Seventh Rotary Sleeve; 1636 Seventh Mounting Shaft

[0133] 1637 Eighth Rotary Sleeve; 1638 Eighth Mounting Shaft

[0134] 162 Second Thrust Module Detailed Implementation

[0135] To make the objectives, technical solutions, and advantages of this application clearer, the technical solutions of this application will be clearly and completely described below in conjunction with specific embodiments and corresponding drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0136] An automobile includes a chassis, a body mounted on the chassis, and electrical components installed on the body and chassis.

[0137] The function of a car chassis is to support and mount the engine and other components and assemblies, thus forming the entire vehicle. The power generated by the engine is transmitted to the drive wheels after being reduced in speed and increased in torque, thereby driving the vehicle forward or backward. The car chassis is equipped with steering control, braking control, and shock absorption devices to ensure normal vehicle operation.

[0138] The automobile chassis consists of the transmission system, the running system, the steering system, and the braking system.

[0139] Specifically, the power of a car is generated by the engine and transmitted to the drive wheels through the clutch, transmission, universal joint, differential, half shaft and other components installed in the drive axle.

[0140] The transmission system includes a clutch, a gearbox, a universal joint, and a drive axle.

[0141] The clutch is located between the engine and the transmission. It is a component in the car's transmission system that is directly connected to the engine and can engage or disengage engine power.

[0142] The actual use of automobiles is very complex, including starting, idling, low-speed or high-speed driving, acceleration, deceleration, climbing hills, and reversing. These operating conditions require the driving force and speed of the automobile to vary within a considerable range. However, the output torque and speed of the widely used piston engines have a relatively small range of variation. In order to adapt to frequently changing driving conditions and to ensure that the engine operates under favorable conditions, a transmission is installed in the transmission system.

[0143] In actual use, it is difficult for the output shaft of the transmission and the input shaft of the drive axle to be driven in a straight line. Furthermore, during the use of a car, vibrations are caused by factors such as the impact of uneven road surfaces. Therefore, the output shaft of the transmission and the input shaft of the drive axle cannot be rigidly connected, and a universal joint transmission device must be used.

[0144] The main function of the drive axle is to transmit the engine power, or torque, from the universal joint to the drive wheels by reducing speed and increasing torque. The drive axle is the final assembly in a car's transmission system, with drive wheels mounted on both sides. The drive axle can be located at the front of the car, at the rear, or simultaneously at both the front and rear.

[0145] The drive axle includes a drive axle housing and a differential and half shafts installed within the drive axle housing.

[0146] In addition to the differential and half-shafts, the drive axle typically also houses a final drive reducer to reduce speed and increase torque. Simultaneously, the final drive reducer changes the direction of torque transmission. In drive axles of vehicles with a transversely mounted engine, the final drive reducer often uses simple helical cylindrical gears. In drive axles of vehicles with a longitudinally mounted engine, the final drive reducer often uses bevel gears or hypoid gears. The final drive reducer further reduces the speed output from the transmission to increase torque before transmitting power to the differential. For rear-wheel-drive vehicles, such as buses and trucks, both the final drive reducer and differential are installed in the rear drive axle, forming a single large assembly.

[0147] The differential enables the wheels on both sides to rotate at different speeds, meeting the needs of the inner and outer wheels to rotate at different speeds.

[0148] The drive wheels are connected to the differential by a half-shaft, which is half of the axle between the two drive wheels.

[0149] The outer shell portion of the drive axle housing that encloses the main reducer and differential is the axle housing body. The outer shell portion of the drive axle housing that encloses the half-shafts is the half-shaft sleeve.

[0150] When the axle sleeve is rigidly integrated with the axle housing body, the axles and drive wheels on both sides cannot move relative to each other in the transverse plane. This type of drive axle housing is called an integral drive axle housing or a non-disconnectable drive axle housing. Integral drive axle housings have high strength and rigidity, facilitating the assembly, adjustment, and maintenance of the main reducer, and are therefore widely used in various types of automobiles. Integral drive axle housings have high rigidity and strength, and are easy to cast into beam shapes of equal strength; however, due to their large mass, casting quality is difficult to guarantee, making them suitable for medium and heavy-duty vehicles, and currently mainly used in heavy-duty vehicles.

[0151] To improve ride smoothness and handling, some passenger cars use independent suspension for all or part of their drive wheels. This means that each drive wheel is connected to the frame via a separate elastic suspension, allowing the two drive wheels to move independently relative to the frame. Correspondingly, the axle housing is fixed to the frame, and the axle housing and axle sleeves are segmented and connected by hinges. This type of drive axle housing is called a split drive axle housing or a segmented drive axle housing. Segmented drive axle housings are generally divided into two sections, bolted together. Segmented drive axle housings are easier to cast and machine than integral drive axle housings, but they are more inconvenient to maintain. When disassembling and inspecting the final drive, the entire drive axle must be removed from the vehicle.

[0152] The driving system connects all the assemblies and components of a car into a whole, supports the weight of the vehicle, and ensures that the car can move.

[0153] The running system includes a frame for mounting the drivetrain, wheels, a steering axle for limiting the relative movement of the wheels to the frame, and a suspension for limiting the movement of the wheels to the frame or body.

[0154] A vehicle frame is a bracket used to mount components such as steering gear, leaf springs, fuel tank, air tank, battery, spare tire, and radiator. Frames can be categorized into side-beam frames, platform frames, and backbone frames.

[0155] A side-beam frame is a rigid structure consisting of two longitudinal beams on either side and several transverse beams joined together by riveting or welding. Because side-beam frames facilitate the installation of the vehicle body and the arrangement of assemblies, and are beneficial for the modification and development of various vehicle models, they are widely used.

[0156] The longitudinal beams of a side-beam frame are typically stamped from low-carbon alloy steel sheets. Their cross-sectional shapes include channel, box, Z-shaped, and I-beam sections. Depending on the vehicle's form and structural layout, the longitudinal beams can be curved, have uniform or non-uniform cross-sections in the horizontal or longitudinal plane.

[0157] There are many types of longitudinal beams, including front-narrow-back-wide, front-wide-back-narrow, and front-and-back equal-width structures, as well as parallel and curved structures.

[0158] The frame crossbeams are used not only to ensure the torsional stiffness of the frame and to withstand longitudinal loads, but also to support the main components of the car, such as the radiator, engine, cockpit, drive shaft, spare tire carrier, and suspension.

[0159] A wheel is a rotating component that bears loads between the tire and the axle, and it generally consists of a hub, spokes, and rim.

[0160] The steering axle mainly consists of the front axle, steering knuckle, and kingpin, which work in conjunction with the wheel hub and steering system to achieve the steering function. The front axle is the main body of the steering axle, and its cross-sectional shape can be I-shaped or tubular.

[0161] The front axle of the steering axle is used to lower the engine height, thereby lowering the car's center of gravity, expanding the driver's field of vision, and reducing the angle between the drive shaft and the transmission output shaft.

[0162] A steering knuckle is the hinge that controls wheel steering; it is a fork-shaped component. The upper and lower branches of the fork-shaped component have two coaxial holes for mounting the kingpin.

[0163] The kingpin's function is to hinge the front axle and the steering knuckle, allowing the steering knuckle to swing around the kingpin to achieve wheel steering.

[0164] The main function of the suspension is to transmit the supporting force, driving force, braking force and lateral reaction force exerted on the wheels by the road surface, as well as the torque formed by these reaction forces, to the frame or monocoque body to ensure the normal driving of the car.

[0165] Based on whether the movements of the wheels on both sides of a car are related, car suspensions can be divided into non-independent suspensions and independent suspensions.

[0166] The structural feature of a non-independent suspension is that the wheels on both sides of the car are mounted on both ends of an integral axle, which is connected to the frame through elastic elements. When one wheel bounces due to uneven road surfaces, it will affect the operation of the other wheel.

[0167] The structural feature of independent suspension is that the wheels on both sides are installed at both ends of a disconnected axle. Each axle and wheel is individually connected to the frame through an elastic element. When one wheel bounces, it does not affect the other wheel, hence the name independent suspension.

[0168] Independent suspension allows for front wheel positioning adjustment, making it widely used in passenger vehicles. In contrast, non-independent suspension is commonly used in medium and heavy-duty commercial vehicles due to its simple structure and ease of manufacturing and maintenance.

[0169] The steering system ensures that a car travels according to the driver's intentions. When a car is traveling on the road, the driver can turn the steering wheel to change the direction of the car by turning the steering wheels according to road conditions and traffic conditions. The mechanism used to change or maintain the direction of the car is called the car steering system. The function of the car steering system is to control the direction of the car according to the driver's intentions.

[0170] The braking system forces a vehicle to decelerate and stop safely in various locations according to its driving needs. The main function of the braking system is to allow the driver to control the braking force according to road and traffic conditions to achieve a certain degree of forced braking, causing the vehicle to decelerate or stop; to ensure the vehicle maintains a stable speed when driving downhill; and to ensure the vehicle can be reliably parked in place, including on slopes.

[0171] Drum brakes utilize brake pads pressing against the wheel hub to generate braking force, and can be divided into internally tensioned and externally tensioned types. Internally tensioned drum brakes use the inner cylindrical surface of the wheel hub as the working surface and are widely used in modern automobiles; externally tensioned drum brakes use the outer cylindrical surface of the wheel hub as the working surface and are currently only used as parking brakes in a very small number of automobiles.

[0172] Please see Figure 1 This application also provides an air suspension system 100, including a frame 11 for mounting the vehicle body, an axle housing 12 for mounting the wheels, and an air spring 13, a shock absorber 14, a linkage frame 15, and a thrust module 16 connected between the frame 11 and the axle housing 12.

[0173] The frame 11 includes frame longitudinal beams 111;

[0174] The bridge housing 12 includes a drive bridge housing 121;

[0175] The drive axle housing 121 includes a housing body 1211, a half-shaft sleeve 1212 located on both sides of the housing body 1211, a first support arm 1213 extending from the half-shaft sleeve 1212 along the periphery of the half-shaft sleeve 1212 in a first direction, and a first longitudinal push arm 1214 extending from the half-shaft sleeve 1212 along the periphery of the half-shaft in a second direction away from the first direction.

[0176] The linkage frame 15 includes a first linkage frame 151;

[0177] One end of the first linkage frame 151 is connected to the longitudinal beam 111 of the vehicle frame, and the other end is pivotally connected to the first longitudinal push arm 1214;

[0178] The vibration damper 14 includes a first vibration damper 141;

[0179] One end of the first shock absorber 141 is connected to the longitudinal beam 111 of the vehicle frame, and the other end is connected to the first longitudinal push arm 1214;

[0180] The air spring 13 includes a first air spring 131 distributed in a longitudinal first position;

[0181] The first air spring 131 is mounted on one side of the first support arm 1213 and on the other side of the vehicle frame longitudinal beam 111;

[0182] The thrust module 16 includes a first thrust module 161;

[0183] The first thrust module 161 is connected to the axle housing body 1211 on one side and to the longitudinal beam 111 of the frame on the other side.

[0184] The frame 11 includes the frame longitudinal beams 111.

[0185] The frame longitudinal beams 111 are distributed along the longitudinal direction of the vehicle body, or in other words, along the direction of vehicle travel. Besides supporting the components mounted on them, the mechanical properties of the frame longitudinal beams 111 meet the vehicle's longitudinal stiffness requirements, especially during vehicle acceleration and deceleration, such as starting and braking. The frame longitudinal beams 111 provided in this application can be made of standard channel steel. Channel steel includes a groove and a groove bottom. The frame longitudinal beams 111 are constructed with a pair of channel steel grooves facing each other, and the longitudinal direction of the channel steel is consistent with the longitudinal direction of the vehicle body. In this way, the groove bottoms of the pair of channel steels are set opposite to each other, forming relatively flush outer surfaces, preventing collisions with installers during installation or disassembly.

[0186] The bridge housing 12 includes a drive bridge housing 121.

[0187] The drive axle housing 121 includes a housing body 1211, a half-shaft sleeve 1212 located on both sides of the housing body 1211, a first support arm 1213 extending from the half-shaft sleeve 1212 along the periphery of the half-shaft sleeve 1212 in a first direction, and a first longitudinal push arm 1214 extending in a second direction opposite to the first direction.

[0188] The axle housing body 1211 can cover the main reducer and differential.

[0189] The axle sleeve 1212 can cover the axle. The axle sleeve 1212 can be a hollow sleeve. Depending on the specific application, the axle sleeve 1212 can be a cylinder, a square tube, or other shapes that are not completely closed in the circumferential direction.

[0190] A first support arm 1213 extends from the half-shaft sleeve 1212 along the periphery of the half-shaft sleeve 1212 in a first direction and a first longitudinal push arm 1214 extends in a second direction opposite to the first direction.

[0191] The first support arms 1213 are arranged in pairs, distributed symmetrically on the same side of the axle housing body 1211, thereby facilitating the balancing of the load on the frame 11. The first support arms 1213 can be used to support the air spring 13. The first longitudinal push arms 1214 are also arranged in pairs, distributed symmetrically on the same side of the axle housing body 1211. The first direction in which the first support arms 1213 extend and the second direction in which the first longitudinal push arms 1214 extend generally correspond to the longitudinal direction of the frame longitudinal beam 111.

[0192] The linkage frame 15 includes a first linkage frame 151. One end of the first linkage frame 151 is connected to the frame longitudinal beam 111, and the other end is pivotally connected to the first longitudinal push arm 1214. The first linkage frame 151 provides vertical support for the frame longitudinal beam 111. The longitudinal load borne by the frame longitudinal beam 111 in the longitudinal direction is transferred by the first linkage frame 151 to the first longitudinal push arm 1214 of the axle housing 12.

[0193] The shock absorber 14 includes a first shock absorber 141. The shock absorber 14 is rod-shaped. The shock absorber 14 consists of a pair of nested sleeves and hydraulic oil enclosed by these sleeves. When subjected to vibration, the hydraulic oil, which has a certain viscosity, flows within the enclosed space defined by these sleeves to impede the vibration and absorb the kinetic energy of the vibration. One end of the first shock absorber 141 is connected to the frame longitudinal beam 111, and the other end is connected to a first longitudinal push arm 1214. Thus, the shock absorber 14 can buffer the relative movement between the frame longitudinal beam 111 and the axle housing 12.

[0194] The air spring 13 includes a first air spring 131 distributed in a longitudinal first position. The first air spring 131 is mounted on one side of the first support arm 1213 and on the other side of the frame longitudinal beam 111.

[0195] The thrust module possesses type identification features characterizing its performance, which are matched to the vehicle's suspension performance requirements. The performance characteristics of the thrust module can form a performance matrix. For example, this matrix includes longitudinal X-stiffness, lateral Y-stiffness, vertical Z-stiffness, longitudinal X-elasticity coefficient, lateral Y-elasticity coefficient, vertical Z-elasticity coefficient, resistance to X-direction torsion, resistance to Y-direction torsion, resistance to Z-direction torsion, maximum longitudinal impact load, maximum lateral impact load, and maximum vertical impact load. The range of performance characteristics can be characterized by these type identification features. Furthermore, the vehicle's suspension performance requirements can also be described using these type identification features. In specific matching, the performance provided by the thrust module should be no less than the vehicle's suspension performance requirements; more preferably, it should possess a certain degree of engineering redundancy.

[0196] The thrust module 16 includes a first thrust module 161. The first thrust module 161 is connected to the axle housing body 1211 on one side and is laterally and vertically connected to the longitudinal beam 111 of the frame on the other side.

[0197] Air springs 13, shock absorbers 14, and linkage frames 15 are distributed longitudinally along the frame longitudinal beams 111, providing support to the frame longitudinal beams 111 from different positions, thus buffering the relative movement between the frame 11 and the axle housing 12 in the vertical direction. Thrust modules 16 extend longitudinally along the frame longitudinal beams 111, bearing longitudinal loads, thus buffering the relative movement between the frame 11 and the axle housing 12 in the horizontal direction of the extended frame longitudinal beams 111. Therefore, the air suspension system 100, composed of the frame 11, the axle housing 12, and the air springs 13, shock absorbers 14, and thrust modules 16 connecting the frame 11 and the axle housing 12, is a three-dimensional multi-link system that maintains relative stability. Due to the standardization of the thrust modules, appropriate thrust modules can be matched according to different operating conditions, thereby enabling the lightweight implementation of complex suspension tuning work.

[0198] Please seeFigure 2 As shown, in a preferred embodiment provided in this application, the axle housing body 1211 of the drive axle housing 121 and the half-shaft sleeve 1212 are integrally cast or separately cast and then welded together.

[0199] The axle housing body 1211 of the drive axle housing 121 and the half-shaft sleeve 1212 are integrally cast, which helps to maintain the consistency of the internal mechanical properties such as strength of the drive axle housing 121.

[0200] The axle housing body 1211 is generally a cylindrical body with a receiving cavity to house the reducer shaft and differential shaft. A mounting plate extends upward from the middle of the axle housing body 1211. The mounting plane of the mounting plate is generally parallel to the longitudinal beam 111 of the vehicle frame. The cylindrical axle housing body 1211 is open at one end and closed at the other end to form a cylindrical bottom. A ridge-like protrusion is formed on the outer surface of the cylindrical bottom of the axle housing body 1211 to improve the strength of the axle housing body 1211.

[0201] The two sides of the cylindrical bridge housing body 1211 gradually taper outwards to extend the half-shaft sleeve 1212.

[0202] The axle housing body 1211 of the drive axle housing 121 and the half-shaft sleeve 1212 are either integrally cast or separately cast and then welded together. In this separately cast embodiment, the drive axle housing 121 can be separately cast, which reduces the casting difficulty of the drive axle housing 121.

[0203] Please refer to Figures 3 to 7 Furthermore, in a preferred embodiment provided in this application, the cross-section of the main body portion extending from the first support arm 1213 has one of the following structures:

[0204] A groove surrounded on three sides;

[0205] A groove is formed on three sides, with a middle wall extending parallel to the groove wall at the bottom.

[0206] T-shaped;

[0207] A ring surrounded on all four sides;

[0208] H type.

[0209] The first support arm 1213 extends from the root of the half-shaft sleeve 1212, the main body adjacent to the root, and the support portion for supporting and fixing the air spring 13.

[0210] Please refer to Figure 3 In one specific embodiment provided in this application, the cross-section of the main body is a groove structure surrounded on three sides. Due to this groove structure, the edge portion has high bending strength, while the hollow portion is lightweight.

[0211] Please refer to Figure 4In another specific embodiment provided in this application, the cross-section of the main body is surrounded on three sides and has a groove extending from the bottom of the groove with a middle wall parallel to the groove wall. Compared with the previous embodiment, the middle part is strengthened.

[0212] Please refer to Figure 5 In another specific embodiment provided in this application, the cross-section of the main body is T-shaped, and due to this T-shaped structure, it has good elasticity.

[0213] Please refer to Figure 6 In another specific embodiment provided in this application, the cross-section of the main body is a ring surrounded on all four sides, which not only has high bending strength, but also good adaptability to eccentric loads.

[0214] Please refer to Figure 7 In another specific embodiment provided in this application, the main body has an H-shaped cross-section, which is more adaptable to eccentric loads and lighter in weight and uses fewer materials compared to the previous embodiment.

[0215] Furthermore, in a preferred embodiment provided in this application, the half-shaft sleeve 1212 is either integral or has two separate sections.

[0216] The half-shaft sleeve 1212 can be composed of two nested sleeve sections or cast as a single piece to adapt to different application requirements. Please refer to... Figure 8 The cross-sectional structure of the two-section half-shaft sleeve 1212 is revealed, which is axially fixed by a locking pin.

[0217] Please refer to Figure 9 and Figure 10 Furthermore, in a preferred embodiment provided in this application, the bridge housing 12 is integrally cast and includes a circumferentially extending brake base plate 124.

[0218] The brake base plate 124 is used to install the brake shoes of a drum brake or the brake caliper bracket of a disc brake.

[0219] The axle housing 12 is integrally cast and includes a circumferentially extending brake base plate 124. The brake base plate 124 is used to mount the brake shoes of a drum brake or the brake caliper bracket of a disc brake. This expands the application scope of the technical solution provided in this application.

[0220] Please see Figure 1 and Figure 2 As shown, the first support arm 1213 is arranged in pairs, which is an integrated type provided in this application.

[0221] The first support arms 1213, which are arranged in pairs, are distributed on the same side of the half-shaft sleeve 1212 and are symmetrically distributed;

[0222] The air suspension system 100 also includes a transverse connecting beam 123 that laterally connects the pair of first support arms 1213.

[0223] The first support arms 1213 are arranged in pairs. The paired first support arms 1213 are distributed on the same side of the half-axle sleeve 1212 and are symmetrically distributed, thereby facilitating the balance of the load on the frame 11. In order to further improve the lateral load of the air suspension system 100, that is, to meet the lateral stiffness of the vehicle when cornering and tilting, the air suspension system 100 also includes a lateral connecting beam 123 that laterally connects the paired first support arms 1213.

[0224] Please see Figure 11 Furthermore, in a preferred embodiment provided in this application, the axle housing 12 further includes a trailer axle housing 122;

[0225] The trailer axle housing 122 includes an axle 1221, a second support arm 1222 extending from the axle 1221 along the periphery of the axle 1221 toward a first direction, and a second longitudinal push arm 1223 extending from the axle 1221 along the periphery of the axle 1221 toward a second direction opposite to the first direction.

[0226] The linkage frame 15 also includes a second linkage frame 152;

[0227] The second link frame 152 is connected to the frame longitudinal beam 111 at one end and pivotally connected to the second longitudinal push arm 1223 at the other end;

[0228] The vibration damper 14 includes a second vibration damper 142;

[0229] The second shock absorber 142 is connected at one end to the frame longitudinal beam 111 and at the other end to the second longitudinal push arm 1223;

[0230] The air spring 13 also includes a second air spring 132 distributed at a second longitudinal position;

[0231] The second air spring 132 is mounted on one side of the second support arm 1222 and on the other side of the frame longitudinal beam 111;

[0232] The thrust module 16 includes a second thrust module 162;

[0233] The second thrust module 162 is connected to the axle 1221 on one side and to the longitudinal beam 111 of the frame on the other side.

[0234] The axle housing 12 also includes a trailer axle housing 122. The trailer axle housing 122 includes an axle 1221, a second support arm 1222 extending from the axle 1221 along the periphery of the axle 1221 in a first direction, and a second longitudinal push arm 1223 extending from the axle 1221 along the periphery of the axle 1221 in a second direction opposite to the first direction.

[0235] The axle 1221 is used to mount the driven wheel in a wheel assembly. The axle 1221 can be a solid or a hollow sleeve. Depending on the specific application, the hollow sleeve-shaped axle 1221 can be a cylinder, a square tube, or other shapes that are not completely closed in the circumferential direction.

[0236] The second support arm 1222 extends from the bridge shaft 1221 along the periphery of the bridge shaft 1221 in a first direction, and the second longitudinal push arm 1223 extends from the bridge shaft 1221 along the periphery of the bridge shaft 1221 in a second direction opposite to the first direction.

[0237] The second support arms 1222 are arranged in pairs, distributed symmetrically on the same side of the axle 1221, thereby facilitating the balancing of the load on the frame 11. The second support arms 1222 can be used to support the air spring 13. The second longitudinal push arms 1223 are also arranged in pairs, distributed symmetrically on the same side of the axle 1221. The first direction of the extension of the second support arms 1222 and the second direction of the extension of the second longitudinal push arms 1223 are substantially equivalent to the longitudinal direction of the frame longitudinal beam 111.

[0238] The linkage frame 15 also includes a second linkage frame 152. One end of the second linkage frame 152 is connected to the frame longitudinal beam 111, and the other end is pivotally connected to the second longitudinal push arm 1223. The second linkage frame 152 provides vertical support for the frame longitudinal beam 111. The longitudinal load borne by the frame longitudinal beam 111 in the longitudinal direction is transferred by the second linkage frame 152 to the second longitudinal push arm 1223 of the axle 1221.

[0239] The shock absorber 14 includes a second shock absorber 142. One end of the second shock absorber 142 is connected to the frame longitudinal beam 111, and the other end is connected to the second longitudinal push arm 1223. Thus, the shock absorber 14 can buffer the relative movement between the frame longitudinal beam 111 and the axle housing 12.

[0240] The air spring 13 also includes a second air spring 132 located at a second longitudinal position. The second air spring 132 is mounted on one side of the second support arm 1222 and on the other side of the frame longitudinal beam 111.

[0241] The thrust module 16 includes a second thrust module 162. The second thrust module 162 is connected to the axle 1221 on one side and to the longitudinal beam 111 of the frame on the other side.

[0242] In this embodiment, an air suspension system 100 with a drive axle housing 121 and a trailer axle housing 122 is provided, expanding the scope of application.

[0243] Please refer to Figure 11 Furthermore, in a preferred embodiment provided in this application, the first linkage frame 151 extends integrally from the frame longitudinal beam 111 as a fork arm 1511.

[0244] The first longitudinal push arm 1214 is provided with a cylindrical arm support 1543 at its end;

[0245] The first link frame 151 also includes an arm shaft 1512;

[0246] The cylindrical arm support 1543 is embedded in the fork arm 1511, and the arm shaft 1512 passes through the cylindrical arm support 1543 and is fixedly connected to the fork arm 1511.

[0247] The first linkage frame 151 extends integrally from the longitudinal beam 111 of the vehicle frame into a fork-shaped arm 1511. A cylindrical arm support 1543 is provided at the end of the first longitudinal push arm 1214. The first linkage frame 151 also includes an arm shaft 1512. The cylindrical arm support 1543 is embedded in the fork-shaped arm 1511, and the arm shaft 1512 passes through the cylindrical arm support 1543 and is engaged with the fork-shaped arm 1511.

[0248] Furthermore, in a preferred embodiment provided in this application, the arm shaft 1512 includes a cylindrical segment and plate-shaped segments located on both sides of the cylindrical segment.

[0249] The cylindrical section of the segmented mounting shaft facilitates pivoting, while the plate-like sections are easy to install and fix. Similarly, the cylindrical section of the segmented arm shaft 1512 facilitates pivoting, while the plate-like sections are easy to install and fix. In one embodiment provided in this application, the arm shaft 1512, from the outside in, can be composed of a sleeve, a cylindrical rubber ring fitted within the sleeve, and a rod-like member inserted inside the rubber ring. The length of the rod-like member is greater than the height of the sleeve and the rubber ring, thus forming a configuration with a central cylindrical section and plate-like sections on both sides.

[0250] Furthermore, in a preferred embodiment provided in this application, the drive axle housing 121 has two units.

[0251] In this embodiment, a two-part technical solution with a drive axle housing 121 is provided, which expands the applicability of the air suspension system 100.

[0252] Furthermore, in a preferred embodiment provided in this application, the drive axle housing 121 is used for an electrically driven vehicle.

[0253] In this embodiment, a technical solution for using the drive axle housing 121 in an electric drive vehicle is provided, expanding the applicability of the air suspension system 100.

[0254] Please refer to Figure 12 This application discloses an air suspension system 100, including: a frame 11 for mounting the vehicle body, an axle housing 12 for mounting the wheels, and an air spring 13, a shock absorber 14, a linkage frame 15, and a thrust module 16 connected between the frame 11 and the axle housing 12.

[0255] The frame 11 includes a frame longitudinal beam 111 and a frame crossbeam 112 that connects the frame longitudinal beam 111 laterally.

[0256] The bridge housing 12 includes a drive bridge housing 121;

[0257] The drive axle housing 121 includes a housing body 1211, a half-shaft sleeve 1212 located on both sides of the housing body 1211, a first support arm 1213 extending from the half-shaft sleeve 1212 along the periphery of the half-shaft sleeve 1212 in a first direction, and a first longitudinal push arm 1214 extending from the half-shaft sleeve 1212 along the periphery of the half-shaft sleeve 1212 in a second direction opposite to the first direction.

[0258] The linkage frame 15 includes a first linkage frame 151;

[0259] One end of the first linkage frame 151 is connected to the longitudinal beam 111 of the vehicle frame, and the other end is pivotally connected to the first longitudinal push arm 1214;

[0260] The vibration damper 14 includes a first vibration damper 141;

[0261] One end of the first shock absorber 14 is connected to the longitudinal beam 111 of the frame, and the other end is connected to the first longitudinal push arm 1214;

[0262] The air spring 13 includes a first air spring 131 distributed in a longitudinal first position;

[0263] The first air spring 131 is mounted on one side of the first support arm 1213 and on the other side of the vehicle frame longitudinal beam 111;

[0264] The thrust module 16 has a type identification feature that characterizes performance, and the type identification feature of the thrust module 16 is matched with the suspension performance requirements of the vehicle.

[0265] The thrust module 16 includes a first thrust module 161;

[0266] The first thrust module 161 is connected to the axle housing body 1211 on one side and to the frame crossbeam 112 on the other side.

[0267] The frame 11 includes a frame longitudinal beam 111 and a frame crossbeam 112 that is transversely connected to the frame longitudinal beam 111.

[0268] The frame longitudinal beams 111 are distributed along the longitudinal direction of the vehicle body, or in other words, along the direction of vehicle travel. Besides supporting the components mounted on them, the mechanical properties of the frame longitudinal beams 111 meet the vehicle's longitudinal stiffness requirements, especially during vehicle acceleration and deceleration, such as starting and braking. The frame longitudinal beams 111 provided in this application can be made of standard channel steel. Channel steel includes a groove and a groove bottom. The frame longitudinal beams 111 are constructed with a pair of channel steel grooves facing each other, and the longitudinal direction of the channel steel is consistent with the longitudinal direction of the vehicle body. In this way, the groove bottoms of the pair of channel steels are set opposite to each other, forming relatively flush outer surfaces, preventing collisions with installers during installation or disassembly.

[0269] The frame crossbeam 112 is rod-shaped or tubular and is installed within the space formed by the slots of a pair of channel steels of the frame longitudinal beam 111. During assembly, the frame crossbeam 112 and the frame longitudinal beam 111 can be bolted or welded together. The mechanical properties of the frame crossbeam 112 meet the lateral stiffness requirements of the vehicle or the stiffness requirements of the frame 111 when it is tilted laterally.

[0270] The frame 11 is formed by the combination of the longitudinal beam 111 and the cross beam 112, which can be used to install the steering gear, leaf springs, fuel tank, air tank, battery, spare tire, water tank, and to support the vehicle body.

[0271] The bridge housing 12 includes a drive bridge housing 121.

[0272] The drive axle housing 121 includes a housing body 1211, a half-shaft sleeve 1212 located on both sides of the housing body 1211, a first support arm 1213 extending from the half-shaft sleeve 1212 along the periphery of the half-shaft sleeve 1212 in a first direction, and a first longitudinal push arm 1214 extending in a second direction opposite to the first direction.

[0273] The axle housing body 1211 can cover the main reducer and differential.

[0274] The axle sleeve 1212 can cover the axle. The axle sleeve 1212 can be a hollow sleeve. Depending on the specific application, the axle sleeve 1212 can be a cylinder, a square tube, or other shapes that are not completely closed in the circumferential direction.

[0275] A first support arm 1213 extends from the half-shaft sleeve 1212 along the periphery of the half-shaft sleeve 1212 in a first direction and a first longitudinal push arm 1214 extends in a second direction opposite to the first direction.

[0276] The first support arms 1213 are arranged in pairs, distributed symmetrically on the same side of the axle housing body 1211, thereby facilitating the balancing of the load on the frame 11. The first support arms 1213 can be used to support the air spring 13. The first longitudinal push arms 1214 are also arranged in pairs, distributed symmetrically on the same side of the axle housing body 1211. The first direction in which the first support arms 1213 extend and the second direction in which the first longitudinal push arms 1214 extend generally correspond to the longitudinal direction of the frame longitudinal beam 111.

[0277] The linkage frame 15 includes a first linkage frame 151. One end of the first linkage frame 151 is connected to the frame longitudinal beam 111, and the other end is pivotally connected to the first longitudinal push arm 1214. The first linkage frame 151 provides vertical support for the frame longitudinal beam 111. The longitudinal load borne by the frame longitudinal beam 111 in the longitudinal direction is transferred by the first linkage frame 151 to the first longitudinal push arm 1214 of the axle housing 12.

[0278] The shock absorber 14 includes a first shock absorber 141. The shock absorber 14 is rod-shaped. The shock absorber 14 consists of a pair of nested sleeves and hydraulic oil enclosed by these sleeves. When subjected to vibration, the hydraulic oil, which has a certain viscosity, flows within the enclosed space defined by these sleeves to impede the vibration and absorb the kinetic energy of the vibration. One end of the first shock absorber 141 is connected to the frame longitudinal beam 111, and the other end is connected to a first longitudinal push arm 1214. Thus, the shock absorber 14 can buffer the relative movement between the frame longitudinal beam 111 and the axle housing 12.

[0279] The air spring 13 includes a first air spring 131 distributed in a longitudinal first position. The first air spring 131 is mounted on one side of the first support arm 1213 and on the other side of the frame longitudinal beam 111.

[0280] The thrust module possesses type identification features characterizing its performance, which are matched to the vehicle's suspension performance requirements. The performance characteristics of the thrust module can form a performance matrix. For example, this matrix includes longitudinal X-stiffness, lateral Y-stiffness, vertical Z-stiffness, longitudinal X-elasticity coefficient, lateral Y-elasticity coefficient, vertical Z-elasticity coefficient, resistance to X-direction torsion, resistance to Y-direction torsion, resistance to Z-direction torsion, maximum longitudinal impact load, maximum lateral impact load, and maximum vertical impact load. The range of performance characteristics can be characterized by these type identification features. Furthermore, the vehicle's suspension performance requirements can also be described using these type identification features. In specific matching, the performance provided by the thrust module should be no less than the vehicle's suspension performance requirements; more preferably, it should possess a certain degree of engineering redundancy.

[0281] The thrust module 16 includes a first thrust module 161. The first thrust module 161 is connected to the axle housing body 1211 on one side and to the frame crossbeam 112 on the other side.

[0282] Air springs 13, shock absorbers 14, and linkage frames 15 are distributed longitudinally along the frame longitudinal beams 111, providing support to the frame longitudinal beams 111 from different positions, thus buffering the relative movement between the frame 11 and the axle housing 12 in the vertical direction. Thrust modules 16 extend longitudinally along the frame longitudinal beams 111, bearing longitudinal loads, thus buffering the relative movement between the frame 11 and the axle housing 12 in the horizontal direction of the extended frame longitudinal beams 111. Therefore, the air suspension system 100, composed of the frame 11, the axle housing 12, and the air springs 13, shock absorbers 14, and thrust modules 16 connecting the frame 11 and the axle housing 12, is a three-dimensional multi-link system that maintains relative stability. Due to the standardization of the thrust modules, appropriate thrust modules can be matched according to different operating conditions, thereby enabling the lightweight implementation of complex suspension tuning work.

[0283] Please see Figure 13 As shown, in a preferred embodiment provided in this application, the axle housing body 1211 of the drive axle housing 121 and the half-shaft sleeve 1212 are integrally cast or separately cast and then welded together.

[0284] The axle housing body 1211 of the drive axle housing 121 and the half-shaft sleeve 1212 are integrally cast, which helps to maintain the consistency of the internal mechanical properties such as strength of the drive axle housing 121.

[0285] The axle housing body 1211 is generally a cylindrical body with a receiving cavity to house the reducer shaft and differential shaft. A mounting plate extends upward from the middle of the axle housing body 1211. The mounting plane of the mounting plate is generally perpendicular to the longitudinal beam 111 of the vehicle frame. The cylindrical axle housing body 1211 is open at one end and closed at the other end to form a cylindrical bottom. A ridge-like protrusion is formed on the outer surface of the cylindrical bottom of the axle housing body 1211 to improve the strength of the axle housing body 1211.

[0286] The two sides of the cylindrical bridge housing body 1211 gradually taper outwards to extend the half-shaft sleeve 1212.

[0287] The axle housing body 1211 of the drive axle housing 121 and the half-shaft sleeve 1212 are either integrally cast or separately cast and then welded together. In this separately cast embodiment, the drive axle housing 121 can be separately cast, which reduces the casting difficulty of the drive axle housing 121.

[0288] Please refer to Figures 3 to 7 Furthermore, in a preferred embodiment provided in this application, the cross-section of the main body portion extending from the first support arm 1213 has one of the following structures:

[0289] A groove surrounded on three sides;

[0290] A groove is formed on three sides, with a middle wall extending parallel to the groove wall at the bottom.

[0291] T-shaped;

[0292] A ring surrounded on all four sides;

[0293] H type.

[0294] The first support arm 1213 extends from the root of the half-shaft sleeve 1212, the main body adjacent to the root, and the support portion for supporting and fixing the air spring 13.

[0295] Please refer to Figure 3 In one specific embodiment provided in this application, the cross-section of the main body is a groove structure surrounded on three sides. Due to this groove structure, the edge portion has high bending strength, while the hollow portion is lightweight.

[0296] Please refer to Figure 4 In another specific embodiment provided in this application, the cross-section of the main body is surrounded on three sides and has a groove extending from the bottom of the groove with a middle wall parallel to the groove wall. Compared with the previous embodiment, the middle part is strengthened.

[0297] Please refer to Figure 5 In another specific embodiment provided in this application, the cross-section of the main body is T-shaped, and due to this T-shaped structure, it has good elasticity.

[0298] Please refer to Figure 6 In another specific embodiment provided in this application, the cross-section of the main body is a ring surrounded on all four sides, which not only has high bending strength, but also good adaptability to eccentric loads.

[0299] Please refer to Figure 7 In another specific embodiment provided in this application, the main body has an H-shaped cross-section, which is more adaptable to eccentric loads and lighter in weight and uses fewer materials compared to the previous embodiment.

[0300] Furthermore, in a preferred embodiment provided in this application, the half-shaft sleeve 1212 is either integral or has two separate sections.

[0301] The half-shaft sleeve 1212 can be composed of two nested sleeve sections or cast as a single piece to adapt to different application requirements. Please refer to... Figure 8 The cross-sectional structure of the two-section half-shaft sleeve 1212 is revealed, which is axially fixed by a locking pin.

[0302] Furthermore, in a preferred embodiment provided in this application, the bridge housing 12 is integrally cast and includes a circumferentially extending brake base plate 124.

[0303] The brake base plate 124 is used to install the brake shoes of a drum brake or the brake caliper bracket of a disc brake.

[0304] The axle housing 12 is integrally cast and includes a circumferentially extending brake base plate 124. The brake base plate 124 is used to mount the brake shoes of a drum brake or the brake caliper bracket of a disc brake. This expands the application scope of the technical solution provided in this application.

[0305] Please refer to Figure 12 Furthermore, in a preferred embodiment provided in this application, the first thrust module 161 includes a first central rotating sleeve 1611, a first central mounting shaft 1612 that passes through the first central rotating sleeve 1611 and pivots relative to the first central rotating sleeve 1611, and a first side rod 1613 and a second side rod 1614 that extend from the first central rotating sleeve 1611 to both sides at a preset angle.

[0306] The end of the first side rod 1613 is provided with a first side rotating sleeve 1615 and a first side mounting shaft 1616 that passes through the first side rotating sleeve 1615 and pivots relative to the first side rotating sleeve 1615.

[0307] The end of the second side rod 1614 is provided with a second side rotating sleeve 1617 and a second side mounting shaft 1618 that passes through the second side rotating sleeve 1617 and pivots relative to the second side rotating sleeve 1617.

[0308] The frame crossbeam 112 is respectively provided with a first side mounting seat 1121 that mates with the first side mounting shaft 1616 and a second side mounting seat 1122 that mates with the second side mounting shaft 1618;

[0309] The bridge housing body 1211 is provided with a first central mounting seat 1215 that mates with the first central mounting shaft 1612;

[0310] The first central mounting shaft 1612 is mated with the first central mounting base 1215;

[0311] The first side mounting shaft 1616 is mated with the first side mounting base 1121;

[0312] The second side mounting shaft 1618 is mated with the second side mounting base 1122.

[0313] The first thrust module 161 includes a first central rotating sleeve 1611, a first central mounting shaft 1612 passing through the first central rotating sleeve 1611 and pivoting relative to the first central rotating sleeve 1611, and a first side rod 1613 and a second side rod 1614 extending from the first central rotating sleeve 1611 to both sides at predetermined angles. The first central rotating sleeve 1611 is sleeve-shaped. The first central mounting shaft 1612 is inserted into the first central rotating sleeve 1611 and can be fixed relative to the axle housing body 1211.

[0314] The first side rod 1613 has a first side rotating sleeve 1615 at its end and a first side mounting shaft 1616 passing through the first side rotating sleeve 1615 and pivoting relative to the first side rotating sleeve 1615. The first side rotating sleeve 1615 is sleeve-shaped. The first side mounting shaft 1616 is inserted into the first side rotating sleeve 1615 and can be fixed relative to the frame crossbeam 112.

[0315] The second side rod 1614 has a second side rotating sleeve 1617 at its end and a second side mounting shaft 1618 that passes through the second side rotating sleeve 1617 and pivots relative to the second side rotating sleeve 1617. The second side rotating sleeve 1617 is sleeve-shaped. The second side mounting shaft 1618 is inserted into the second side rotating sleeve 1617 and can be fixed relative to the frame crossbeam 112.

[0316] The first side rod 1613 and the second side rod 1614 are at a preset angle. The preset angle is an acute angle.

[0317] The frame crossbeams 112 are respectively provided with a first side mounting seat 1121 that mates with the first side mounting shaft 1616 and a second side mounting seat 1122 that mates with the second side mounting shaft 1618. The axle housing body 1211 is provided with a first central mounting seat 1215 that mates with the first central mounting shaft 1612. The first central mounting shaft 1612 mates with the first central mounting seat 1215. The first side mounting shaft 1616 mates with the first side mounting seat 1121. The second side mounting shaft 1618 mates with the second side mounting seat 1122.

[0318] The first side rod 1613 and the second side rod 1614 of the first thrust module 161 are at a preset angle. The first thrust module 161 and the frame crossbeam 112 are triangularly distributed. Since the triangle has stability, the air suspension system 100 composed of the frame 11, the axle housing 12, and the air spring 13, the shock absorber 14 and the thrust module 16 connected between the frame 11 and the axle housing 12 has strong stability.

[0319] Furthermore, in a preferred embodiment provided in this application, at least one of the first central mounting shaft 1612, the first side mounting shaft 1616, or the second side mounting shaft 1618 is segmented, including a cylindrical segment and plate-shaped segments located on both sides of the cylindrical segment.

[0320] The cylindrical section of the segmented mounting shaft facilitates pivoting, while the plate-like sections are easy to install and fix. In one embodiment provided in this application, the mounting shaft, from the outside in, can be composed of a sleeve, a cylindrical rubber ring fitted inside the sleeve, and a rod-like member inserted inside the rubber ring. The length of the rod-like member is greater than the depth of the sleeve and the rubber ring, thus forming a configuration with a central cylindrical section and plate-like sections on both sides.

[0321] Please refer to Figure 13 Furthermore, in a preferred embodiment provided in this application, the first support arm 1213 is arranged in pairs;

[0322] The first support arms 1213, which are arranged in pairs, are distributed on the same side of the half-shaft sleeve 1212 and are symmetrically distributed;

[0323] The air suspension system 100 also includes a transverse connecting beam 123 that laterally connects the pair of first support arms 1213.

[0324] The first support arms 1213 are arranged in pairs. The paired first support arms 1213 are distributed on the same side of the half-axle sleeve 1212 and are symmetrically distributed, thereby facilitating the balance of the load on the frame 11. In order to further improve the lateral load of the air suspension system 100, that is, to meet the lateral stiffness of the vehicle when cornering and tilting, the air suspension system 100 also includes a lateral connecting beam 123 that laterally connects the paired first support arms 1213.

[0325] Please refer to Figure 14 Furthermore, in a preferred embodiment provided in this application, the axle housing 12 further includes a trailer axle housing 122;

[0326] The trailer axle housing 122 includes an axle 1221, a second support arm 1222 extending from the axle 1221 along the periphery of the axle 1221 toward a first direction, and a second longitudinal push arm 1223 extending from the axle 1221 along the periphery of the axle 1221 toward a second direction opposite to the first direction.

[0327] The linkage frame 15 also includes a second linkage frame 152;

[0328] The second link frame 152 is connected to the frame longitudinal beam 111 at one end and pivotally connected to the second longitudinal push arm 1223 at the other end;

[0329] The vibration damper 14 includes a second vibration damper 142;

[0330] The second shock absorber 142 is connected at one end to the frame longitudinal beam 111 and at the other end to the second longitudinal push arm 1223;

[0331] The air spring 13 also includes a second air spring 132 distributed at a second longitudinal position;

[0332] The second air spring 132 is mounted on one side of the second support arm 1222 and on the other side of the frame longitudinal beam 111;

[0333] The thrust module 16 includes a second thrust module 162;

[0334] The second thrust module 162 is connected to the axle 1221 on one side and to the frame crossbeam 112 on the other side.

[0335] The axle housing 12 also includes a trailer axle housing 122. The trailer axle housing 122 includes an axle 1221, a second support arm 1222 extending from the axle 1221 along the periphery of the axle 1221 in a first direction, and a second longitudinal push arm 1223 extending from the axle 1221 along the periphery of the axle 1221 in a second direction opposite to the first direction.

[0336] The axle 1221 is used to mount the driven wheel in a wheel assembly. The axle 1221 can be a solid or a hollow sleeve. Depending on the specific application, the hollow sleeve-shaped axle 1221 can be a cylinder, a square tube, or other shapes that are not completely closed in the circumferential direction.

[0337] The second support arm 1222 extends from the bridge shaft 1221 along the periphery of the bridge shaft 1221 in a first direction, and the second longitudinal push arm 1223 extends from the bridge shaft 1221 along the periphery of the bridge shaft 1221 in a second direction opposite to the first direction.

[0338] The second support arms 1222 are arranged in pairs, distributed symmetrically on the same side of the axle 1221, thereby facilitating the balancing of the load on the frame 11. The second support arms 1222 can be used to support the air spring 13. The second longitudinal push arms 1223 are also arranged in pairs, distributed symmetrically on the same side of the axle 1221. The first direction of the extension of the second support arms 1222 and the second direction of the extension of the second longitudinal push arms 1223 are substantially equivalent to the longitudinal direction of the frame longitudinal beam 111.

[0339] The linkage frame 15 also includes a second linkage frame 152. One end of the second linkage frame 152 is connected to the frame longitudinal beam 111, and the other end is pivotally connected to the second longitudinal push arm 1223. The second linkage frame 152 provides vertical support for the frame longitudinal beam 111. The longitudinal load borne by the frame longitudinal beam 111 in the longitudinal direction is transferred by the second linkage frame 152 to the second longitudinal push arm 1223 of the axle 1221.

[0340] The shock absorber 14 includes a second shock absorber 142. One end of the second shock absorber 142 is connected to the frame longitudinal beam 111, and the other end is connected to the second longitudinal push arm 1223. Thus, the shock absorber 14 can buffer the relative movement between the frame longitudinal beam 111 and the axle housing 12.

[0341] The air spring 13 also includes a second air spring 132 located at a second longitudinal position. The second air spring 132 is mounted on one side of the second support arm 1222 and on the other side of the frame longitudinal beam 111.

[0342] The thrust module 16 includes a second thrust module 162. The second thrust module 162 is connected to the axle 1221 on one side and to the frame crossbeam 112 on the other side.

[0343] In this embodiment, an air suspension system 100 with a drive axle housing 121 and a trailer axle housing 122 is provided, expanding the scope of application.

[0344] Furthermore, in a preferred embodiment provided in this application, the drive axle housing 121 has two units.

[0345] In this embodiment, a two-part technical solution with a drive axle housing 121 is provided, which expands the applicability of the air suspension system 100.

[0346] Furthermore, in a preferred embodiment provided in this application, the drive axle housing 121 is used for an electrically driven vehicle.

[0347] In this embodiment, a technical solution for using the drive axle housing 121 in an electric drive vehicle is provided, expanding the applicability of the air suspension system 100.

[0348] Please see Figure 15 This application also provides an air suspension system 100, including a frame 11 for mounting the vehicle body, an axle housing 12 for mounting the wheels, and an air spring 13, a shock absorber 14, and a linkage frame 15 connected between the frame 11 and the axle housing 12.

[0349] The frame 11 includes frame longitudinal beams 111;

[0350] The bridge housing 12 includes a drive bridge housing 121;

[0351] The drive axle housing 121 includes a housing body 1211, a half-shaft sleeve 1212 located on both sides of the housing body 1211, a first support arm 1213 extending from the half-shaft sleeve 1212 along the periphery of the half-shaft sleeve 1212 in a first direction, and a first longitudinal push arm 1214 extending from the half-shaft sleeve 1212 along the periphery of the half-shaft in a second direction away from the first direction.

[0352] The linkage frame 15 includes a first linkage frame 151;

[0353] One end of the first linkage frame 151 is connected to the longitudinal beam 111 of the vehicle frame, and the other end is pivotally connected to the first longitudinal push arm 1214;

[0354] The vibration damper 14 includes a first vibration damper 141;

[0355] One end of the first shock absorber 141 is connected to the longitudinal beam 111 of the vehicle frame, and the other end is connected to the first longitudinal push arm 1214;

[0356] The air spring 13 includes a first air spring 131 distributed in a longitudinal first position;

[0357] The first air spring 131 is mounted on one side of the first support arm 1213 and on the other side of the vehicle frame longitudinal beam 111;

[0358] The first linkage frame 151 extends integrally from the frame longitudinal beam 111 into a fork arm 1511;

[0359] The first longitudinal push arm 1214 is provided with a cylindrical arm support 1543 at its end;

[0360] The first link frame 151 also includes an arm shaft 1512;

[0361] The cylindrical arm support 1543 is embedded in the fork arm 1511, and the arm shaft 1512 passes through the cylindrical arm support 1543 and is engaged in the fork arm 1511.

[0362] The frame 11 includes the frame longitudinal beams 111.

[0363] The frame longitudinal beams 111 are distributed along the longitudinal direction of the vehicle body, or in other words, along the direction of vehicle travel. Besides supporting the components mounted on them, the mechanical properties of the frame longitudinal beams 111 meet the vehicle's longitudinal stiffness requirements, especially during vehicle acceleration and deceleration, such as starting and braking. The frame longitudinal beams 111 provided in this application can be made of standard channel steel. Channel steel includes a groove and a groove bottom. The frame longitudinal beams 111 are constructed with a pair of channel steel grooves facing each other, and the longitudinal direction of the channel steel is consistent with the longitudinal direction of the vehicle body. In this way, the groove bottoms of the pair of channel steels are set opposite to each other, forming relatively flush outer surfaces, preventing collisions with installers during installation or disassembly.

[0364] The bridge housing 12 includes a drive bridge housing 121.

[0365] The drive axle housing 121 includes a housing body 1211, a half-shaft sleeve 1212 located on both sides of the housing body 1211, a first support arm 1213 extending from the half-shaft sleeve 1212 along the periphery of the half-shaft sleeve 1212 in a first direction, and a first longitudinal push arm 1214 extending in a second direction opposite to the first direction.

[0366] The axle housing body 1211 can cover the main reducer and differential.

[0367] The axle sleeve 1212 can cover the axle. The axle sleeve 1212 can be a hollow sleeve. Depending on the specific application, the axle sleeve 1212 can be a cylinder, a square tube, or other shapes that are not completely closed in the circumferential direction.

[0368] A first support arm 1213 extends from the half-shaft sleeve 1212 along the periphery of the half-shaft sleeve 1212 in a first direction and a first longitudinal push arm 1214 extends in a second direction opposite to the first direction.

[0369] The first support arms 1213 are arranged in pairs, distributed symmetrically on the same side of the axle housing body 1211, thereby facilitating the balancing of the load on the frame 11. The first support arms 1213 can be used to support the air spring 13. The first longitudinal push arms 1214 are also arranged in pairs, distributed symmetrically on the same side of the axle housing body 1211. The first direction in which the first support arms 1213 extend and the second direction in which the first longitudinal push arms 1214 extend generally correspond to the longitudinal direction of the frame longitudinal beam 111.

[0370] The linkage frame 15 includes a first linkage frame 151. One end of the first linkage frame 151 is connected to the frame longitudinal beam 111, and the other end is pivotally connected to the first longitudinal push arm 1214. The first linkage frame 151 provides vertical support for the frame longitudinal beam 111. The longitudinal load borne by the frame longitudinal beam 111 in the longitudinal direction is transferred by the first linkage frame 151 to the first longitudinal push arm 1214 of the axle housing 12.

[0371] The shock absorber 14 includes a first shock absorber 141. The shock absorber 14 is rod-shaped. The shock absorber 14 consists of a pair of nested sleeves and hydraulic oil enclosed by these sleeves. When subjected to vibration, the hydraulic oil, which has a certain viscosity, flows within the enclosed space defined by these sleeves to impede the vibration and absorb the kinetic energy of the vibration. One end of the first shock absorber 141 is connected to the frame longitudinal beam 111, and the other end is connected to a first longitudinal push arm 1214. Thus, the shock absorber 14 can buffer the relative movement between the frame longitudinal beam 111 and the axle housing 12.

[0372] The air spring 13 includes a first air spring 131 distributed in a longitudinal first position. The first air spring 131 is mounted on one side of the first support arm 1213 and on the other side of the frame longitudinal beam 111.

[0373] The first linkage frame 151 extends integrally from the longitudinal beam 111 of the vehicle frame into a fork-shaped arm 1511. A cylindrical arm support 1543 is provided at the end of the first longitudinal push arm 1214. The first linkage frame 151 also includes an arm shaft 1512. The cylindrical arm support 1543 is embedded in the fork-shaped arm 1511, and the arm shaft 1512 passes through the cylindrical arm support 1543 and is engaged with the fork-shaped arm 1511.

[0374] Air springs 13, shock absorbers 14, and linkage frames 15 are distributed longitudinally along the frame longitudinal beams 111, providing support to the frame longitudinal beams 111 from different positions, thus buffering the relative movement between the frame 11 and the axle housing 12 in the vertical direction. The first longitudinal push arm 1214 extends longitudinally along the frame longitudinal beams 111, bearing the longitudinal load, thus buffering the relative movement between the frame 11 and the axle housing 12 in the horizontal direction of the extended frame longitudinal beams 111. Therefore, the air suspension system 100, composed of the frame 11, the axle housing 12, and the air springs 13 and shock absorbers 14 connecting the frame 11 and the axle housing 12, is a three-dimensional multi-link system that maintains relative stability, providing a technical solution with less bumps and impacts, and improving the driving experience.

[0375] Please see Figure 16 As shown, in a preferred embodiment provided in this application, the axle housing body 1211 of the drive axle housing 121 and the half-shaft sleeve 1212 are integrally cast or separately cast and then welded together.

[0376] The axle housing body 1211 of the drive axle housing 121 and the half-shaft sleeve 1212 are integrally cast, which helps to maintain the consistency of the internal mechanical properties such as strength of the drive axle housing 121.

[0377] The axle housing body 1211 is generally a cylindrical body with a receiving cavity to house the reducer shaft and differential shaft. One end of the cylindrical axle housing body 1211 is open, and the other end is closed to form the bottom of the cylinder. A ridge-like protrusion is formed on the outer surface of the bottom of the axle housing body 1211 to improve the strength of the axle housing body 1211.

[0378] The two sides of the cylindrical bridge housing body 1211 gradually taper outwards to extend the half-shaft sleeve 1212.

[0379] The axle housing body 1211 of the drive axle housing 121 and the half-shaft sleeve 1212 are either integrally cast or separately cast and then welded together. In this separately cast embodiment, the drive axle housing 121 can be separately cast, which reduces the casting difficulty of the drive axle housing 121.

[0380] Please refer to Figures 3 to 7 Furthermore, in a preferred embodiment provided in this application, the cross-section of the main body portion extending from the first support arm 1213 has one of the following structures:

[0381] A groove surrounded on three sides;

[0382] A groove is formed on three sides, with a middle wall extending parallel to the groove wall at the bottom.

[0383] T-shaped;

[0384] A ring surrounded on all four sides;

[0385] H type.

[0386] The first support arm 1213 extends from the root of the half-shaft sleeve 1212, the main body adjacent to the root, and the support portion for supporting and fixing the air spring 13.

[0387] Please refer to Figure 3 In one specific embodiment provided in this application, the cross-section of the main body is a groove structure surrounded on three sides. Due to this groove structure, the edge portion has high bending strength, while the hollow portion is lightweight.

[0388] Please refer to Figure 4 In another specific embodiment provided in this application, the cross-section of the main body is surrounded on three sides and has a groove extending from the bottom of the groove with a middle wall parallel to the groove wall. Compared with the previous embodiment, the middle part is strengthened.

[0389] Please refer to Figure 5 In another specific embodiment provided in this application, the cross-section of the main body is T-shaped, and due to this T-shaped structure, it has good elasticity.

[0390] Please refer to Figure 6 In another specific embodiment provided in this application, the cross-section of the main body is a ring surrounded on all four sides, which not only has high bending strength, but also good adaptability to eccentric loads.

[0391] Please refer to Figure 7 In another specific embodiment provided in this application, the main body has an H-shaped cross-section, which is more adaptable to eccentric loads and lighter in weight and uses fewer materials compared to the previous embodiment.

[0392] Furthermore, in a preferred embodiment provided in this application, the half-shaft sleeve 1212 is either integral or has two separate sections.

[0393] The half-shaft sleeve 1212 can be composed of two nested sleeve sections or cast as a single piece to adapt to different application requirements. Please refer to... Figure 8 The cross-sectional structure of the two-section half-shaft sleeve 1212 is revealed, which is axially fixed by a locking pin.

[0394] Furthermore, in a preferred embodiment provided in this application, the bridge housing 12 is integrally cast and includes a circumferentially extending brake base plate 124.

[0395] The brake base plate 124 is used to install the brake shoes of a drum brake or the brake caliper bracket of a disc brake.

[0396] The axle housing 12 is integrally cast and includes a circumferentially extending brake base plate 124. The brake base plate 124 is used to mount the brake shoes of a drum brake or the brake caliper bracket of a disc brake. This expands the application scope of the technical solution provided in this application.

[0397] Please see Figure 15 Furthermore, in a preferred embodiment provided in this application, the first support arm 1213 is arranged in pairs;

[0398] The first support arms 1213, which are arranged in pairs, are distributed on the same side of the half-shaft sleeve 1212 and are symmetrically distributed;

[0399] The air suspension system 100 also includes a transverse connecting beam 123 that laterally connects the pair of first support arms 1213.

[0400] The first support arms 1213 are arranged in pairs. The paired first support arms 1213 are distributed on the same side of the half-axle sleeve 1212 and are symmetrically distributed, thereby facilitating the balance of the load on the frame 11. In order to further improve the lateral load of the air suspension system 100, that is, to meet the lateral stiffness of the vehicle when cornering and tilting, the air suspension system 100 also includes a lateral connecting beam 123 that laterally connects the paired first support arms 1213.

[0401] Please see Figure 15 Furthermore, in a preferred embodiment provided in this application, the axle housing 12 further includes a trailer axle housing 122;

[0402] The trailer axle housing 122 includes an axle 1221, a second support arm 1222 extending from the axle 1221 along the periphery of the axle 1221 toward a first direction, and a second longitudinal push arm 1223 extending from the axle 1221 along the periphery of the axle 1221 toward a second direction opposite to the first direction.

[0403] The linkage frame 15 also includes a second linkage frame 152;

[0404] The second link frame 152 is connected to the frame longitudinal beam 111 at one end and pivotally connected to the second longitudinal push arm 1223 at the other end;

[0405] The vibration damper 14 includes a second vibration damper 142;

[0406] The second shock absorber 142 is connected at one end to the frame longitudinal beam 111 and at the other end to the second longitudinal push arm 1223;

[0407] The air spring 13 also includes a second air spring 132 distributed at a second longitudinal position;

[0408] The second air spring 132 is mounted on one side of the second support arm 1222 and on the other side of the frame longitudinal beam 111.

[0409] The axle housing 12 also includes a trailer axle housing 122. The trailer axle housing 122 includes an axle 1221, a second support arm 1222 extending from the axle 1221 along the periphery of the axle 1221 in a first direction, and a second longitudinal push arm 1223 extending from the axle 1221 along the periphery of the axle 1221 in a second direction opposite to the first direction.

[0410] The axle 1221 is used to mount the driven wheel in a wheel assembly. The axle 1221 can be a solid or a hollow sleeve. Depending on the specific application, the hollow sleeve-shaped axle 1221 can be a cylinder, a square tube, or other shapes that are not completely closed in the circumferential direction.

[0411] The second support arm 1222 extends from the bridge shaft 1221 along the periphery of the bridge shaft 1221 in a first direction, and the second longitudinal push arm 1223 extends from the bridge shaft 1221 along the periphery of the bridge shaft 1221 in a second direction opposite to the first direction.

[0412] The second support arms 1222 are arranged in pairs, distributed symmetrically on the same side of the axle 1221, thereby facilitating the balancing of the load on the frame 11. The second support arms 1222 can be used to support the air spring 13. The second longitudinal push arms 1223 are also arranged in pairs, distributed symmetrically on the same side of the axle 1221. The first direction of the extension of the second support arms 1222 and the second direction of the extension of the second longitudinal push arms 1223 are substantially equivalent to the longitudinal direction of the frame longitudinal beam 111.

[0413] The linkage frame 15 also includes a second linkage frame 152. One end of the second linkage frame 152 is connected to the frame longitudinal beam 111, and the other end is pivotally connected to the second longitudinal push arm 1223. The second linkage frame 152 provides vertical support for the frame longitudinal beam 111. The longitudinal load borne by the frame longitudinal beam 111 in the longitudinal direction is transferred by the second linkage frame 152 to the second longitudinal push arm 1223 of the axle 1221.

[0414] The shock absorber 14 includes a second shock absorber 142. One end of the second shock absorber 142 is connected to the frame longitudinal beam 111, and the other end is connected to the second longitudinal push arm 1223. Thus, the shock absorber 14 can buffer the relative movement between the frame longitudinal beam 111 and the axle housing 12.

[0415] The air spring 13 also includes a second air spring 132 located at a second longitudinal position. The second air spring 132 is mounted on one side of the second support arm 1222 and on the other side of the frame longitudinal beam 111.

[0416] In this embodiment, an air suspension system 100 with a drive axle housing 121 and a trailer axle housing 122 is provided, expanding the scope of application.

[0417] Furthermore, in a preferred embodiment provided in this application, the drive axle housing 121 has two units.

[0418] Furthermore, in a preferred embodiment provided in this application, the drive axle housing 121 is used for an electrically driven vehicle.

[0419] In this embodiment, a technical solution for using the drive axle housing 121 in an electric drive vehicle is provided, expanding the applicability of the air suspension system 100.

[0420] Please refer to Figure 17 This application also provides an air suspension system 100, including a frame 11 for mounting the vehicle body, an axle housing 12 for mounting the wheels, and an air spring 13, a shock absorber 14, a linkage frame 15, and a thrust module 16 connected between the frame 11 and the axle housing 12.

[0421] The frame 11 includes a frame longitudinal beam 111 and a frame crossbeam 112 that connects the frame longitudinal beam 111 laterally.

[0422] The bridge housing 12 includes a drive bridge housing 121;

[0423] The drive axle housing 121 includes a housing body 1211, a half-shaft sleeve 1212 located on both sides of the housing body 1211, a first support arm 1213 extending from the half-shaft sleeve 1212 along the periphery of the half-shaft sleeve 1212 in a first direction, and a third support arm 1203 extending from the half-shaft sleeve 1212 along the periphery of the half-shaft in a second direction opposite to the first direction.

[0424] The linkage frame 15 includes a third linkage frame 153;

[0425] The third link frame 153 includes a first frame arm 1531 and a first rotating arm 1532 pivotally connected to the first frame arm 1531;

[0426] The other end of the first frame arm 1531, away from the first rotating arm 1532, is connected to the frame longitudinal beam 111;

[0427] The other end of the first rotating arm 1532, away from the first frame arm 1531, is connected to the bridge housing body 1211;

[0428] The vibration damper 14 includes a first vibration damper 141;

[0429] The first shock absorber 141 is connected at one end to the longitudinal beam 111 of the vehicle frame and at the other end to the third support arm 1203;

[0430] The air spring 13 includes a first air spring 131 distributed in a first longitudinal position and a third air spring 133 distributed in a third longitudinal position;

[0431] The first air spring 131 is mounted on one side of the first support arm 1213 and on the other side of the vehicle frame longitudinal beam 111;

[0432] The third air spring 133 is mounted on one side of the third support arm 1203 and on the other side of the frame longitudinal beam 111;

[0433] The first thrust module 161 is connected to the axle housing body 1211 on one side and to the frame crossbeam 112 on the other side.

[0434] The frame 11 includes a frame longitudinal beam 111 and a frame crossbeam 112 that is transversely connected to the frame longitudinal beam 111.

[0435] The frame longitudinal beams 111 are distributed along the longitudinal direction of the vehicle body, or in other words, along the direction of vehicle travel. Besides supporting the components mounted on them, the mechanical properties of the frame longitudinal beams 111 meet the vehicle's longitudinal stiffness requirements, especially during vehicle acceleration and deceleration, such as starting and braking. The frame longitudinal beams 111 provided in this application can be made of standard channel steel. Channel steel includes a groove and a groove bottom. The frame longitudinal beams 111 are constructed with a pair of channel steel grooves facing each other, and the longitudinal direction of the channel steel is consistent with the longitudinal direction of the vehicle body. In this way, the groove bottoms of the pair of channel steels are set opposite to each other, forming relatively flush outer surfaces, preventing collisions with installers during installation or disassembly.

[0436] The frame crossbeam 112 is rod-shaped or tubular and is installed within the space formed by the slots of a pair of channel steels of the frame longitudinal beam 111. During assembly, the frame crossbeam 112 and the frame longitudinal beam 111 can be bolted or welded together. The mechanical properties of the frame crossbeam 112 meet the lateral stiffness requirements of the vehicle or the stiffness requirements of the frame 111 when it is tilted laterally.

[0437] The frame 11 is formed by the combination of the longitudinal beam 111 and the cross beam 112, which can be used to install the steering gear, leaf springs, fuel tank, air tank, battery, spare tire, water tank, and to support the vehicle body.

[0438] The bridge housing 12 includes a drive bridge housing 121.

[0439] The drive axle housing 121 includes a housing body 1211, a half-shaft sleeve 1212 located on both sides of the housing body 1211, a first support arm 1213 extending from the half-shaft sleeve 1212 along the periphery of the half-shaft sleeve 1212 in a first direction, and a third support arm 1203 extending in a second direction opposite to the first direction.

[0440] The axle housing body 1211 can cover the main reducer and differential.

[0441] The axle sleeve 1212 can cover the axle. The axle sleeve 1212 can be a hollow sleeve. Depending on the specific application, the axle sleeve 1212 can be a cylinder, a square tube, or other shapes that are not completely closed in the circumferential direction.

[0442] A first support arm 1213 extends from the half-shaft sleeve 1212 along the periphery of the half-shaft sleeve 1212 in a first direction, and a third support arm 1203 extends in a second direction opposite to the first direction.

[0443] The first support arms 1213 are arranged in pairs, distributed symmetrically on the same side of the axle housing body 1211, thereby facilitating the balance of the load on the frame 11. The first support arms 1213 can be used to support the air spring 13. The third support arms 1203 are also arranged in pairs, distributed symmetrically on the same side of the axle housing body 1211. The first direction in which the first support arms 1213 extend and the second direction in which the third support arms 1203 extend generally correspond to the longitudinal direction of the frame longitudinal beam 111.

[0444] Linkage frame 15 includes a third linkage frame 153. The third linkage frame 153 includes a first frame arm 1531 and a first rotating arm 1532 pivotally connected to the first frame arm 1531. The end of the first frame arm 1531 away from the first rotating arm 1532 is connected to the frame longitudinal beam 111. The end of the first rotating arm 1532 away from the first frame arm 1531 is connected to the axle housing body 1211. The first frame arm 1531 provides vertical support to the frame longitudinal beam 111. The longitudinal load borne by the frame longitudinal beam 111 in the longitudinal direction is transferred to the axle housing 12 by the first rotating arm 1532.

[0445] The shock absorber 14 includes a first shock absorber 141. The shock absorber 14 is rod-shaped. The shock absorber 14 consists of a pair of nested sleeves and hydraulic oil enclosed by these sleeves. When subjected to vibration, the hydraulic oil, which has a certain viscosity, flows within the enclosed space defined by these sleeves to impede the vibration and absorb the kinetic energy of the vibration. One end of the first shock absorber 141 is connected to the frame longitudinal beam 111, and the other end is connected to the third support arm 1203. Thus, the shock absorber 14 can buffer the relative movement between the frame longitudinal beam 111 and the axle housing 12.

[0446] The air spring 13 includes a first air spring 131 located at a first longitudinal position and a third air spring 133 located at a third longitudinal position. The first air spring 131 is mounted on one side of the first support arm 1213 and on the other side of the frame longitudinal beam 111. The third air spring 133 is mounted on one side of the third support arm 1203 and on the other side of the frame longitudinal beam 111.

[0447] The thrust module 16 includes a first thrust module 161. The first thrust module 161 is connected to the axle housing body 1211 on one side and to the frame crossbeam 112 on the other side.

[0448] Air springs 13, shock absorbers 14, and linkage frames 15 are distributed longitudinally along the frame longitudinal beams 111, providing support to the frame longitudinal beams 111 from different positions, thus buffering the relative movement between the frame 11 and the axle housing 12 in the vertical direction. Thrust modules 16 extend longitudinally along the frame longitudinal beams 111, bearing longitudinal loads, thus buffering the relative movement between the frame 11 and the axle housing 12 in the horizontal direction of the extended frame longitudinal beams 111. Therefore, the air suspension system 100, composed of the frame 11, the axle housing 12, and the air springs 13, shock absorbers 14, and thrust modules 16 connecting the frame 11 and the axle housing 12, is a three-dimensional multi-link system that maintains relative stability, providing a technical solution with less bumps and impacts, and improving the driving experience.

[0449] Please see Figure 18 As shown, in a preferred embodiment provided in this application, the axle housing body 1211 of the drive axle housing 121 and the half-shaft sleeve 1212 are integrally cast or separately cast and then welded together.

[0450] The axle housing body 1211 of the drive axle housing 121 and the half-shaft sleeve 1212 are integrally cast, which helps to maintain the consistency of the internal mechanical properties such as strength of the drive axle housing 121.

[0451] The axle housing body 1211 is generally a cylindrical body with a receiving cavity to house the reducer shaft and differential shaft. A mounting plate extends upward from the middle of the axle housing body 1211. The mounting plane of the mounting plate is generally perpendicular to the longitudinal beam 111 of the vehicle frame. The cylindrical axle housing body 1211 is open at one end and closed at the other end to form a cylindrical bottom. A ridge-like protrusion is formed on the outer surface of the cylindrical bottom of the axle housing body 1211 to improve the strength of the axle housing body 1211.

[0452] The cylindrical bridge housing body 1211 gradually tapers outward from both sides to extend the half-shaft sleeve 1212. At the same time, the half-shaft sleeve 1212 is integrally cast with the first support arm 1213 and the third support arm 1203.

[0453] The axle housing body 1211 of the drive axle housing 121 and the half-shaft sleeve 1212 are either integrally cast or separately cast and then welded together. In this separately cast embodiment, the drive axle housing 121 can be separately cast, which reduces the casting difficulty of the drive axle housing 121.

[0454] Please refer to Figures 3 to 7Furthermore, in a preferred embodiment provided in this application, the cross-section of the main body portion extending from the first support arm 1213 has one of the following structures:

[0455] A groove surrounded on three sides;

[0456] A groove is formed on three sides, with a middle wall extending parallel to the groove wall at the bottom.

[0457] T-shaped;

[0458] A ring surrounded on all four sides;

[0459] H type.

[0460] The first support arm 1213 extends from the root of the half-shaft sleeve 1212, the main body adjacent to the root, and the support portion for supporting and fixing the air spring 13.

[0461] Please refer to Figure 3 In one specific embodiment provided in this application, the cross-section of the main body is a groove structure surrounded on three sides. Due to this groove structure, the edge portion has high bending strength, while the hollow portion is lightweight.

[0462] Please refer to Figure 4 In another specific embodiment provided in this application, the cross-section of the main body is surrounded on three sides and has a groove extending from the bottom of the groove with a middle wall parallel to the groove wall. Compared with the previous embodiment, the middle part is strengthened.

[0463] Please refer to Figure 5 In another specific embodiment provided in this application, the cross-section of the main body is T-shaped, and due to this T-shaped structure, it has good elasticity.

[0464] Please refer to Figure 6 In another specific embodiment provided in this application, the cross-section of the main body is a ring surrounded on all four sides, which not only has high bending strength, but also good adaptability to eccentric loads.

[0465] Please refer to Figure 7 In another specific embodiment provided in this application, the main body has an H-shaped cross-section, which is more adaptable to eccentric loads and lighter in weight and uses fewer materials compared to the previous embodiment.

[0466] Furthermore, in a preferred embodiment provided in this application, the half-shaft sleeve 1212 is either integral or has two separate sections.

[0467] The half-shaft sleeve 1212 can be composed of two nested sleeve sections or cast as a single piece to adapt to different application requirements. Please refer to... Figure 8The cross-sectional structure of the two-section half-shaft sleeve 1212 is revealed, which is axially fixed by a locking pin.

[0468] Furthermore, in a preferred embodiment provided in this application, the bridge housing 12 is integrally cast and includes a circumferentially extending brake base plate 124.

[0469] The brake base plate 124 is used to install the brake shoes of a drum brake or the brake caliper bracket of a disc brake.

[0470] The axle housing 12 is integrally cast and includes a circumferentially extending brake base plate 124. The brake base plate 124 is used to mount the brake shoes of a drum brake or the brake caliper bracket of a disc brake. This expands the application scope of the technical solution provided in this application.

[0471] Please see Figure 19 Furthermore, in a preferred embodiment provided in this application, the first thrust module 161 includes a first central rotating sleeve 1611, a first central mounting shaft 1612 that passes through the first central rotating sleeve 1611 and pivots relative to the first central rotating sleeve 1611, and a first side rod 1613 and a second side rod 1614 that extend from the first central rotating sleeve 1611 to both sides at a preset angle.

[0472] The end of the first side rod 1613 is provided with a first side rotating sleeve 1615 and a first side mounting shaft 1616 that passes through the first side rotating sleeve 1615 and pivots relative to the first side rotating sleeve 1615.

[0473] The end of the second side rod 1614 is provided with a second side rotating sleeve 1617 and a second side mounting shaft 1618 that passes through the second side rotating sleeve 1617 and pivots relative to the second side rotating sleeve 1617.

[0474] The frame crossbeam 112 is respectively provided with a first side mounting seat 1121 that mates with the first side mounting shaft 1616 and a second side mounting seat 1122 that mates with the second side mounting shaft 1618;

[0475] The bridge housing body 1211 is provided with a first central mounting seat 1215 that mates with the first central mounting shaft 1612;

[0476] The first central mounting shaft 1612 is mated with the first central mounting base 1215;

[0477] The first side mounting shaft 1616 is mated with the first side mounting base 1121;

[0478] The second side mounting shaft 1618 is mated with the second side mounting base 1122.

[0479] The first thrust module 161 includes a first central rotating sleeve 1611, a first central mounting shaft 1612 passing through the first central rotating sleeve 1611 and pivoting relative to the first central rotating sleeve 1611, and a first side rod 1613 and a second side rod 1614 extending from the first central rotating sleeve 1611 to both sides at predetermined angles. The first central rotating sleeve 1611 is sleeve-shaped. The first central mounting shaft 1612 is inserted into the first central rotating sleeve 1611 and can be fixed relative to the axle housing body 1211.

[0480] The first side rod 1613 has a first side rotating sleeve 1615 at its end and a first side mounting shaft 1616 passing through the first side rotating sleeve 1615 and pivoting relative to the first side rotating sleeve 1615. The first side rotating sleeve 1615 is sleeve-shaped. The first side mounting shaft 1616 is inserted into the first side rotating sleeve 1615 and can be fixed relative to the frame crossbeam 112.

[0481] The second side rod 1614 has a second side rotating sleeve 1617 at its end and a second side mounting shaft 1618 that passes through the second side rotating sleeve 1617 and pivots relative to the second side rotating sleeve 1617. The second side rotating sleeve 1617 is sleeve-shaped. The second side mounting shaft 1618 is inserted into the second side rotating sleeve 1617 and can be fixed relative to the frame crossbeam 112.

[0482] The first side rod 1613 and the second side rod 1614 are at a preset angle. The preset angle is an acute angle.

[0483] The frame crossbeams 112 are respectively provided with a first side mounting seat 1121 that mates with the first side mounting shaft 1616 and a second side mounting seat 1122 that mates with the second side mounting shaft 1618. The axle housing body 1211 is provided with a first central mounting seat 1215 that mates with the first central mounting shaft 1612. The first central mounting shaft 1612 mates with the first central mounting seat 1215. The first side mounting shaft 1616 mates with the first side mounting seat 1121. The second side mounting shaft 1618 mates with the second side mounting seat 1122.

[0484] The first side rod 1613 and the second side rod 1614 of the first thrust module 161 are at a preset angle. The first thrust module 161 and the frame crossbeam 112 are triangularly distributed. Since the triangle has stability, the air suspension system 100 composed of the frame 11, the axle housing 12, and the air spring 13, the shock absorber 14 and the thrust module 16 connected between the frame 11 and the axle housing 12 has strong stability.

[0485] Please see Figure 20 Furthermore, in a preferred embodiment provided in this application, the first thrust module 161 includes a third side rod 1621 and a fourth side rod 1622;

[0486] One end of the third side rod 1621 is provided with a third central rotating sleeve 1623 and a third central mounting shaft 1624 that passes through the third central rotating sleeve 1623 and pivots relative to the third central rotating sleeve 1623, and the other end is provided with a third side rotating sleeve 1625 and a third side mounting shaft 1626 that passes through the third side rotating sleeve 1625 and pivots relative to the third side rotating sleeve 1625;

[0487] The fourth side rod 1622 has a fourth central rotating sleeve 1627 and a fourth central mounting shaft 1628 that passes through the fourth central rotating sleeve 1627 and pivots relative to the fourth central rotating sleeve 1627 at one end, and a fourth side rotating sleeve 1629 and a fourth side mounting shaft 1620 that passes through the fourth side rotating sleeve 1629 and pivots relative to the fourth side rotating sleeve 1629 at the other end;

[0488] The bridge housing body 1211 is respectively provided with a third central mounting seat 1216 that mates with the third central mounting shaft 1624 and a fourth central mounting seat 1217 that mates with the fourth central mounting shaft 1628.

[0489] The frame crossbeam 112 is respectively provided with a third side mounting seat 1123 that mates with the third side mounting shaft 1626 and a fourth side mounting seat 1124 that mates with the fourth side mounting shaft 1620;

[0490] The third central mounting shaft 1624 is fitted to the third central mounting base 1216;

[0491] The fourth central mounting shaft 1628 is fitted to the fourth central mounting base 1217;

[0492] The third side mounting shaft 1626 is fitted to the third side mounting base 1123;

[0493] The fourth side mounting shaft 1620 is mated with the fourth side mounting base 1124;

[0494] The third side rod 1621 and the fourth side rod 1622 are installed at a preset angle.

[0495] The first thrust module 161 includes a third side rod 1621 and a fourth side rod 1622.

[0496] One end of the third side rod 1621 is provided with a third central rotating sleeve 1623 and a third central mounting shaft 1624 that passes through and pivots relative to the third central rotating sleeve 1623. The third central rotating sleeve 1623 is sleeve-shaped. The third central mounting shaft 1624 is inserted into the third central rotating sleeve 1623 and can be fixed relative to the axle housing body 1211. The other end of the third side rod 1621 is provided with a third side rotating sleeve 1625 and a third side mounting shaft 1626 that passes through and pivots relative to the third side rotating sleeve 1625. The third side rotating sleeve 1625 is sleeve-shaped. The third side mounting shaft 1626 is inserted into the third side rotating sleeve 1625 and can be fixed relative to the frame crossbeam 112.

[0497] The fourth side rod 1622 has a fourth central rotating sleeve 1627 at one end and a fourth central mounting shaft 1628 that passes through and pivots relative to the fourth central rotating sleeve 1627. The fourth central rotating sleeve 1627 is sleeve-shaped. The fourth central mounting shaft 1628 is inserted into the fourth central rotating sleeve 1627 and can be fixed relative to the axle housing body 1211. The fourth side rod 1622 has a fourth side rotating sleeve 1629 at the other end and a fourth side mounting shaft 1620 that passes through and pivots relative to the fourth side rotating sleeve 1629. The fourth side rotating sleeve 1629 is sleeve-shaped. The fourth side mounting shaft 1620 is inserted into the fourth side rotating sleeve 1629 and can be fixed relative to the frame crossbeam 112.

[0498] The third side rod 1621 and the fourth side rod 1622 are at a preset angle. The preset angle is an acute angle.

[0499] The bridge housing body 1211 is respectively provided with a third central mounting seat 1216 that mates with the third central mounting shaft 1624 and a fourth central mounting seat 1217 that mates with the fourth central mounting shaft 1628. The third central mounting shaft 1624 mates with the third central mounting seat 1216. The fourth central mounting shaft 1628 mates with the fourth central mounting seat 1217.

[0500] The frame crossbeam 112 is respectively provided with a third-side mounting seat 1123 that mates with the third-side mounting shaft 1626 and a fourth-side mounting seat 1124 that mates with the fourth-side mounting shaft 1620. The third-side mounting shaft 1626 mates with the third-side mounting seat 1123. The fourth-side mounting shaft 1620 mates with the fourth-side mounting seat 1124.

[0501] The third side rod 1621 and the fourth side rod 1622 of the first thrust module 161 are at a preset angle. The first thrust module 161, the frame crossbeam 112, and the axle housing body 1211 are arranged in a trapezoidal shape. Since the quadrilateral shape allows for easy movement within a certain range, the air suspension system 100, which consists of the frame 11, the axle housing 12, and the air spring 13, shock absorber 14, and thrust module 16 connected between the frame 11 and the axle housing 12, can move relative to each other within a certain range and is not easily damaged.

[0502] Please see Figure 21 Furthermore, in a preferred embodiment provided in this application, the first thrust module 161 includes a plate-like member;

[0503] The plate-shaped member includes a middle section and four corner sections extending from the middle section in four directions. The four corner sections gradually narrow from the center to the corners, and adjacent corner sections are connected by an arc transition.

[0504] The four corner ends are respectively provided with a fifth rotating sleeve 1631 and a fifth mounting shaft 1632 that passes through the fifth rotating sleeve 1631 and pivots relative to the fifth rotating sleeve 1631, a sixth rotating sleeve 1633 and a sixth mounting shaft 1634 that passes through the sixth rotating sleeve 1633 and pivots relative to the sixth rotating sleeve 1633, a seventh rotating sleeve 1635 and a seventh mounting shaft 1636 that passes through the seventh rotating sleeve 1635 and pivots relative to the seventh rotating sleeve 1635, an eighth rotating sleeve 1637 and an eighth mounting shaft 1638 that passes through the eighth rotating sleeve 1637 and pivots relative to the eighth rotating sleeve 1637;

[0505] The bridge housing body 1211 is respectively provided with a fifth mounting seat 1218 that mates with the fifth mounting shaft 1632 and a sixth mounting seat 1219 that mates with the sixth mounting shaft 1634;

[0506] The frame crossbeam 112 is respectively provided with a seventh mounting seat 1201 that mates with the seventh mounting shaft 1636 and an eighth mounting seat 1202 that mates with the eighth mounting shaft 1638.

[0507] The fifth mounting shaft 1632 is fitted to the fifth mounting base 1218;

[0508] The sixth mounting shaft 1634 is fitted to the sixth mounting base 1219;

[0509] The seventh mounting shaft 1636 is fitted to the seventh mounting base 1201;

[0510] The eighth mounting shaft 1638 is fitted to the eighth mounting base 1202.

[0511] The first thrust module 161 includes a plate-shaped member. The plate-shaped member includes a central portion and four corner portions extending from the central portion in four directions. The four corner portions gradually narrow from the center to the edge corners. Adjacent corner portions are connected by an arc-shaped transition.

[0512] The four corner ends are respectively provided with a fifth rotating sleeve 1631 and a fifth mounting shaft 1632 that passes through and pivots relative to the fifth rotating sleeve 1631; a sixth rotating sleeve 1633 and a sixth mounting shaft 1634 that passes through and pivots relative to the sixth rotating sleeve 1633; a seventh rotating sleeve 1635 and a seventh mounting shaft 1636 that passes through and pivots relative to the seventh rotating sleeve 1635; and an eighth rotating sleeve 1637 and an eighth mounting shaft 1638 that passes through and pivots relative to the eighth rotating sleeve 1637. The fifth rotating sleeve 1631 is sleeve-shaped. The sixth rotating sleeve 1633 is sleeve-shaped. The seventh rotating sleeve 1635 is sleeve-shaped. The eighth rotating sleeve 1637 is sleeve-shaped. The fifth mounting shaft 1632 is inserted into the fifth rotating sleeve 1631 and can be fixed relative to the bridge housing body 1211. The sixth mounting shaft 1634 is inserted into the sixth rotating sleeve 1633 and can be fixed relative to the axle housing body 1211. The seventh mounting shaft 1636 is inserted into the seventh rotating sleeve 1635 and can be fixed relative to the frame crossbeam 112. The eighth mounting shaft 1638 is inserted into the eighth rotating sleeve 1637 and can be fixed relative to the frame crossbeam 112.

[0513] The bridge housing body 1211 is respectively provided with a fifth mounting seat 1218 that mates with the fifth mounting shaft 1632 and a sixth mounting seat 1219 that mates with the sixth mounting shaft 1634. The fifth mounting shaft 1632 mates with the fifth mounting seat 1218. The sixth mounting shaft 1634 mates with the sixth mounting seat 1219.

[0514] The frame crossbeam 112 is respectively provided with a seventh mounting seat 1201 that mates with the seventh mounting shaft 1636 and an eighth mounting seat 1202 that mates with the eighth mounting shaft 1638. The seventh mounting shaft 1636 mates with the seventh mounting seat 1201. The eighth mounting shaft 1638 mates with the eighth mounting seat 1202.

[0515] The first thrust module 161 is an integral plate-shaped component, with four corners extending from the middle in four directions. This allows it to buffer the impact force between the frame 11 and the axle housing 12 from four directions. As a result, the air suspension system 100, consisting of the frame 11, the axle housing 12, and the air spring 13, shock absorber 14, and thrust module 16 connected between the frame 11 and the axle housing 12, has high stability.

[0516] Please see Figure 24Furthermore, in a preferred embodiment provided in this application, the plate-shaped member has reinforcing ribs protruding along the thickness direction at the contour edge.

[0517] The plate-shaped part has reinforcing ribs protruding along the thickness direction at the contour edge, which can improve the strength of the plate-shaped part.

[0518] Please see Figure 22 Furthermore, in a preferred embodiment provided in this application, the reinforcing ribs are continuously distributed or have openings at preset positions.

[0519] For ease of casting, the reinforcing ribs of plate-shaped parts can be continuously distributed.

[0520] Of course, in order to alleviate stress concentration in cast plate-shaped parts, the reinforcing ribs of the plate-shaped parts can have openings at preset positions.

[0521] Please refer to Figures 19 to 21 Furthermore, in a preferred embodiment provided in this application, at least one of the first central mounting shaft 1612, the first side mounting shaft 1616, or the second side mounting shaft 1618 is segmented, including a cylindrical segment and plate-shaped segments located on both sides of the cylindrical segment; or

[0522] At least one of the third central mounting shaft 1624, the fourth central mounting shaft 1628, the third side mounting shaft 1626, or the fourth side mounting shaft 1620 is segmented, including a cylindrical segment and plate-shaped segments located on both sides of the cylindrical segment; or

[0523] At least one of the fifth mounting shaft 1632, the sixth mounting shaft 1634, the seventh mounting shaft 1636, or the eighth mounting shaft 1638 is segmented, including a cylindrical segment and plate-shaped segments located on both sides of the cylindrical segment.

[0524] The segmented mounting shaft features a cylindrical section for easy pivoting and a plate-like section for easy installation and fixation. In one embodiment provided in this application, the mounting shaft, from the outside in, can be composed of a sleeve, a cylindrical rubber ring fitted within the sleeve, and a rod-like member inserted inside the rubber ring. The length of the rod-like member is greater than the height of the sleeve and the rubber ring, thus forming a configuration with a central cylindrical section and plate-like sections on both sides.

[0525] Please see again Figure 21 Furthermore, in a preferred embodiment provided in this application, the first frame arm 1531 includes a wing plate 1533 that is fixed to the plane of the frame longitudinal beam 111 and a three-dimensional sleeve 1534 that extends from the thickness direction of the wing plate 1533 and whose thickness gradually increases.

[0526] The first rotating arm 1532 has an arm sleeve 1535 and an arm sleeve shaft 1536 passing through the arm sleeve 1535 at its end;

[0527] The arm sleeve shaft 1536 is connected to the three-dimensional sleeve base 1534 so that the first rotating arm 1532 can pivot relative to the first frame arm 1531.

[0528] The first frame arm 1531 includes a wing plate 1533 that is fixed to the plane of the frame longitudinal beam 111 and a three-dimensional sleeve 1534 that extends from the thickness direction of the wing plate 1533 and whose thickness gradually increases.

[0529] The wing plate 1533 can be understood as a plate-like component extending longitudinally in the vertical direction and along the longitudinal extension of the frame longitudinal beam 111. The wing plate 1533 conforms to the outer surface of the frame longitudinal beam 111 in the vertical direction. The wing plate 1533 and the frame longitudinal beam 111 can be bolted together. The wing plate 1533 has two flanges perpendicular to the frame longitudinal beam 111. The flanges extend from the thickness direction of the wing plate 1533, and the thickness gradually increases as they extend, forming a three-dimensional sleeve 1534.

[0530] The first rotating arm 1532 has an arm sleeve 1535 at its end and an arm sleeve shaft 1536 passing through the arm sleeve 1535. The arm sleeve shaft 1536 is engaged with the three-dimensional sleeve base 1534. The first rotating arm 1532 can pivot around the arm sleeve shaft 1536. The main body of the first frame arm 1531 is a hollow frame structure, which is lightweight but maintains considerable strength.

[0531] Please see Figure 19 Furthermore, in a preferred embodiment provided in this application, the linkage frame 15 further includes a fourth linkage frame 154;

[0532] The fourth link frame 154 is connected to the longitudinal beam 111 of the vehicle frame at one end and to the first support arm 1213 at the other end.

[0533] To improve the adaptability to longitudinal and lateral loads, the linkage frame 15 also includes a fourth linkage frame 154. One end of the fourth linkage frame 154 is connected to the frame longitudinal beam 111, and the other end is connected to the first support arm 1213.

[0534] Please see Figure 19 Furthermore, in a preferred embodiment provided in this application, the fourth linkage frame 154 includes a first arm 1541, a second arm 1542, and a shaft 1543;

[0535] The first lever arm 1541 is provided with a cylindrical arm support 1543;

[0536] The second lever 1542 is equipped with a three-sided frame support 1544;

[0537] The three-sided frame support 1544 houses the cylindrical arm support 1543 inside;

[0538] The rod shaft 1543 passes through the cylindrical arm support 1543 and is connected to the three-sided frame support 1544.

[0539] The fourth linkage frame 154 includes a first arm 1541, a second arm 1542, and a rod axle 1543. The first arm 1541 is a rod-shaped member with a cylindrical arm support 1543 at the end furthest from the first support arm 1213. The second arm 1542 is a rod-shaped member with a three-sided frame support 1544 at the end furthest from the frame longitudinal beam 111. The three-sided frame support 1544 houses the cylindrical arm support 1543. The rod axle 1545 passes through the cylindrical arm support 1543 and connects to the three-sided frame support 1544. The fourth linkage frame 154 has a simple structure and low implementation cost.

[0540] Please refer to Figure 19 Furthermore, in a preferred embodiment provided in this application, the first support arm 1213 is arranged in pairs;

[0541] The first support arms 1213, which are arranged in pairs, are distributed on the same side of the half-shaft sleeve 1212 and are symmetrically distributed;

[0542] The air suspension system 100 also includes a transverse connecting beam 123 that laterally connects the pair of first support arms 1213.

[0543] The first support arms 1213 are arranged in pairs. The paired first support arms 1213 are distributed on the same side of the half-axle sleeve 1212 and are symmetrically distributed, thereby facilitating the balance of the load on the frame 11. In order to further improve the lateral load of the air suspension system 100, that is, to meet the lateral stiffness of the vehicle when cornering and tilting, the air suspension system 100 also includes a lateral connecting beam 123 that laterally connects the paired first support arms 1213.

[0544] Please see Figure 23 and Figure 24 Furthermore, in a preferred embodiment provided in this application, the axle housing 12 further includes a trailer axle housing 122;

[0545] The trailer axle housing 122 includes an axle 1221, a second support arm 1222 extending from the axle 1221 along the periphery of the axle 1221 in a first direction, and a fourth support arm 1224 extending from the axle 1221 along the periphery of the axle 1221 in a second direction opposite to the first direction.

[0546] The linkage frame 15 also includes a fifth linkage frame 155;

[0547] The fifth link frame 155 includes a first frame arm 1531, a first rotating arm 1532 pivotally connected to the first frame arm 1531, and a second rotating arm 1551 pivotally connected to the first frame arm 1531;

[0548] One end of the first frame arm 1531 is connected to the longitudinal beam 111 of the vehicle frame, and the other end is pivotally connected to the first rotating arm 1532 and the second rotating arm 1551.

[0549] The other end of the first rotating arm 1532 is connected to the half-shaft sleeve 1212;

[0550] The other end of the second rotating arm 1551 is connected to the bridge shaft 1221;

[0551] The vibration damper 14 also includes a third vibration damper 143;

[0552] The third shock absorber 143 is connected at one end to the longitudinal beam 111 of the frame and at the other end to the second support arm 1222;

[0553] The air spring 13 also includes a second air spring 132 distributed in the second longitudinal position and a fourth air spring 134 distributed in the fourth longitudinal position;

[0554] The second air spring 132 is mounted on one side of the second support arm 1222 and on the other side of the frame longitudinal beam 111;

[0555] The fourth air spring 134 is mounted on one side of the fourth support arm 1224 and on the other side of the frame longitudinal beam 111;

[0556] The thrust module 16 includes a second thrust module 162;

[0557] The second thrust module 162 is connected to the axle 1221 on one side and to the frame crossbeam 112 on the other side.

[0558] The axle housing 12 also includes a trailer axle housing 122. The trailer axle housing 122 includes an axle 1221, a second support arm 1222 extending from the axle 1221 along the periphery of the axle 1221 in a first direction, and a fourth support arm 1224 extending from the axle 1221 along the periphery of the axle 1221 in a second direction opposite to the first direction.

[0559] The axle 1221 is used to mount the driven wheel in a wheel assembly. The axle 1221 can be a solid or a hollow sleeve. Depending on the specific application, the hollow sleeve-shaped axle 1221 can be a cylinder, a square tube, or other shapes that are not completely closed in the circumferential direction.

[0560] A second support arm 1222 extends from the axle 1221 along the periphery of the axle 1221 in a first direction, and a fourth support arm 1224 extends from the axle 1221 along the periphery of the axle 1221 in a second direction opposite to the first direction.

[0561] The second support arms 1222 are arranged in pairs, distributed symmetrically on the same side of the axle 1221, thereby facilitating the balance of the load on the frame 11. The second support arms 1222 can be used to support the air spring 13. The fourth support arms 1224 are also arranged in pairs, distributed symmetrically on the same side of the axle 1221. The first direction of the extension of the second support arms 1222 and the second direction of the extension of the fourth support arms 1224 are substantially equivalent to the longitudinal direction of the frame longitudinal beam 111.

[0562] The linkage frame 15 further includes a fifth linkage frame 155. The fifth linkage frame 155 includes a first frame arm 1531, a first rotating arm 1532 pivotally connected to the first frame arm 1531, and a second rotating arm 1551 pivotally connected to the first frame arm 1531. One end of the second frame arm is connected to the frame longitudinal beam 111, and the other end is pivotally connected to the first rotating arm 1532 and the second rotating arm 1551. The other end of the first rotating arm 1532 is connected to the half-axle sleeve 1212. The other end of the second rotating arm 1551 is connected to the axle 1221.

[0563] The fifth link frame 155 provides vertical support for the frame longitudinal beam 111. The longitudinal load borne by the frame longitudinal beam 111 is transmitted from the first frame arm 1531 to the first rotating arm 1532 and the second rotating arm 1551, and finally to the half-axle sleeve 1212 and the axle 1221.

[0564] The shock absorber 14 includes a third shock absorber 143. One end of the third shock absorber 143 is connected to the frame longitudinal beam 111, and the other end is connected to the second support arm 1222. Thus, the shock absorber 14 can buffer the relative movement between the frame longitudinal beam 111 and the axle housing 12.

[0565] The air spring 13 also includes a second air spring 132 located at a second longitudinal position and a fourth air spring 134 located at a fourth longitudinal position. The second air spring 132 is mounted on one side of the second support arm 1222 and on the other side of the frame longitudinal beam 111. The fourth air spring 134 is mounted on one side of the fourth support arm 1224 and on the other side of the frame longitudinal beam 111.

[0566] The thrust module 16 includes a second thrust module 162. The second thrust module 162 is connected to the axle 1221 on one side and to the frame crossbeam 112 on the other side.

[0567] In this embodiment, an air suspension system 100 with a drive axle housing 121 and a trailer axle housing 122 is provided, expanding the scope of application.

[0568] Furthermore, in a preferred embodiment provided in this application, the drive axle housing 121 has two units.

[0569] In this embodiment, a two-part technical solution with a drive axle housing 121 is provided, which expands the applicability of the air suspension system 100.

[0570] Furthermore, in a preferred embodiment provided in this application, the drive axle housing 121 is used for an electrically driven vehicle.

[0571] In this embodiment, a technical solution for using the drive axle housing 121 in an electric drive vehicle is provided, expanding the applicability of the air suspension system 100.

[0572] This application provides an air suspension system with a one-piece cast axle housing and an X-type thrust rod. The air suspension system includes a vehicle crossbeam, vehicle longitudinal beams, a fixed bracket, a one-piece cast axle housing, an X-type thrust rod, an air spring, a shock absorber, and an I-type thrust rod. There are two sets of vehicle longitudinal beams arranged horizontally and parallel to each other. The vehicle crossbeam is fixedly connected between the two sets of vehicle longitudinal beams. The top of the fixed bracket is fixedly connected to the outer wall of the vehicle longitudinal beams. The one-piece cast axle housing is connected to the fixed bracket via the I-type thrust rod. The I-type thrust rod is located below the vehicle longitudinal beams. The fixed bracket is fixedly connected to the vehicle longitudinal beams. The X-type thrust rod is disposed between the one-piece cast axle housing and the vehicle crossbeam.

[0573] Air springs and shock absorbers are connected between the vehicle's longitudinal beams and the integral cast axle housing, respectively, for adjusting the frame height and reducing bumps and impacts.

[0574] The above structures together form a parallelogram suspension system. The parallelogram structure can reduce the change in the tilt angle of the suspension links during operation and ensure a reasonable power line angle of the drive shaft.

[0575] Additionally, below a pair of vehicle longitudinal beams, a pair of air spring support arms extend longitudinally from the axis of the integrally cast axle housing on both sides. Each air spring support arm can be fitted with one air spring. The other side of each air spring connects to the lower end face of the vehicle longitudinal beam, thus achieving an elastic connection between the frame and the axle. The air spring support arm connects to the lower end of a shock absorber, and the upper end of the shock absorber connects to the vehicle longitudinal beam.

[0576] The air spring support arm serves to guide the vehicle while connecting the air springs and axle housing in the suspension system. This allows the axle housing to be elastically connected to the vehicle's longitudinal beams, mitigating the impact load on the chassis caused by uneven road surfaces during driving, reducing vibrations, improving driving comfort, and minimizing cargo vibration impacts. Overall, the fixed support, I-type thrust rod, one-piece cast axle housing, and X-type thrust rod together form a parallelogram suspension system.

[0577] In this suspension system, the X-shaped thrust rod connects the vehicle's crossbeam to the integrated cast axle housing. Compared to a suspension system with a V-shaped rod and a stabilizer bar, the X-shaped thrust rod system provides both guidance and lateral anti-roll function, offering advantages such as high integration and lightweight design. However, because the X-shaped thrust rod serves both guiding and anti-roll functions, its stress structure is more complex, and it bears a greater load.

[0578] The air spring support arm and the axle housing body are an integrated structure, and the cross-section between the air spring support arm and the axle housing body can be any one of the following: square, portal, I-shaped or T-shaped.

[0579] This application provides an air suspension system with an integral cast axle housing and a V-shaped thrust rod, including: a frame longitudinal beam, an axle housing body, an air spring, a V-shaped thrust rod, a shock absorber, a stabilizer bar, and a lateral balance link.

[0580] This application also provides an air suspension system with an integral cast axle housing and a trapezoidal thrust rod, including: a frame longitudinal beam, an axle housing body, an air spring, a thrust rod assembly, a shock absorber, a stabilizer bar, a lateral balance link, and a lower thrust rod.

[0581] In both of the above embodiments, the lateral balance link is integrally cast.

[0582] The lateral balance link includes a balance bar and a thrust bar support.

[0583] The intermediate balance bar of the transverse balance link adopts a hollow circular cross section, but it can also be a hollow elliptical, U-shaped, or trapezoidal cross section.

[0584] The stabilizer bar is connected to thrust rod supports at both ends, with the thrust rod supports symmetrically distributed on both sides of the stabilizer bar. A rectangular mounting boss is provided at the connection point between the thrust rod support and the stabilizer bar; alternatively, a trapezoidal, square, or polygonal structure may be used.

[0585] In both of the above embodiments, the axle housing body can also be an integrated dual-motor electric drive vehicle axle housing.

[0586] It should be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0587] The above description is merely an embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principle of this application should be included within the scope of the claims of this application.

Claims

1. An air suspension system, comprising a frame for mounting a vehicle body, an axle housing for mounting wheels, and an air spring, a shock absorber, a linkage frame, and a thrust module connected between the frame and the axle housing, characterized in that: The vehicle frame includes longitudinal beams; The bridge housing includes a drive bridge housing; The drive axle housing includes a housing body, a half-shaft sleeve located on both sides of the housing body, a first support arm extending from the half-shaft sleeve along the periphery of the half-shaft sleeve in a first direction, and a first longitudinal push arm extending from the half-shaft sleeve along the periphery of the half-shaft in a second direction away from the first direction. The linkage frame includes a first linkage frame; One end of the first linkage frame is connected to the longitudinal beam of the vehicle frame, and the other end is pivotally connected to the first longitudinal push arm; The vibration damper includes a first vibration damper; One end of the first shock absorber is connected to the longitudinal beam of the vehicle frame, and the other end is connected to the first longitudinal push arm; The air spring includes a first air spring distributed at a first position in the longitudinal direction; The first air spring is mounted on one side of the first support arm and on the other side of the vehicle frame longitudinal beam; The thrust module has a type identification feature that characterizes performance, and the type identification feature of the thrust module is matched with the vehicle's suspension performance requirements. The thrust module includes a first thrust module; The first thrust module is connected to the axle housing body on one side and to the longitudinal beam of the frame on the other side.

2. The air suspension system according to claim 1, characterized in that... The axle housing body and the half-shaft sleeve of the drive axle housing are either cast as a whole or cast separately and then welded together.

3. The air suspension system according to claim 1, characterized in that... The cross-section of the main body portion of the first support arm extension has one of the following structures: A groove surrounded on three sides; A groove is formed on three sides, with a middle wall extending parallel to the groove wall at the bottom. T-shaped; A ring surrounded on all four sides; H type.

4. The air suspension system according to claim 1, characterized in that... The half-shaft sleeve is either integral or has two separate sections.

5. The air suspension system according to claim 1, characterized in that... The bridge housing is integrally cast and includes a circumferentially extending brake base plate; The brake base plate is used to install the brake shoes of a drum brake or the brake caliper bracket for a disc brake.

6. The air suspension system according to claim 1, characterized in that... The first support arms are arranged in pairs; The first support arms, which are arranged in pairs, are distributed on the same side of the half-shaft sleeve and are symmetrically distributed. The air suspension system also includes a transverse connecting beam that laterally connects the pairs of first trailing arms.

7. The air suspension system according to claim 1, characterized in that... The axle housing also includes an integrally cast trailer axle housing; The trailer axle housing includes an axle, a second support arm extending from the axle along the periphery of the axle in a first direction, and a second longitudinal push arm extending from the axle along the periphery of the axle in a second direction opposite to the first direction. The linkage frame also includes a second linkage frame; One end of the second linkage frame is connected to the longitudinal beam of the vehicle frame, and the other end is pivotally connected to the second longitudinal push arm; The vibration damper includes a second vibration damper; The second shock absorber is connected to the longitudinal beam of the vehicle frame at one end and to the second longitudinal push arm at the other end; The air spring also includes a second air spring distributed at a second longitudinal position; The second air spring is mounted on one side of the second support arm and on the other side of the vehicle frame longitudinal beam; The thrust module includes a second thrust module; The second thrust module is connected to the axle on one side and to the longitudinal beam of the frame on the other side.

8. The air suspension system according to claim 1, characterized in that... The first linkage frame extends integrally from the longitudinal beam of the vehicle frame into a fork-shaped arm; The first longitudinal push arm is provided with a cylindrical arm support at its end; The first linkage frame also includes an arm shaft; The cylindrical arm support is embedded in the fork-shaped arm, and the arm shaft passes through the cylindrical arm support and is fixedly connected to the fork-shaped arm.

9. The air suspension system according to claim 8, characterized in that... The arm shaft includes a cylindrical section and plate-shaped sections located on both sides of the cylindrical section.

10. The air suspension system according to claim 1, characterized in that... The drive axle housing has two.

11. The air suspension system according to claim 1, characterized in that... The drive axle housing is used for electrically driven vehicles.

12. An air suspension system, comprising a frame for mounting a vehicle body, an axle housing for mounting wheels, and an air spring, a shock absorber, a linkage frame, and a thrust module connected between the frame and the axle housing, characterized in that: The frame includes frame longitudinal beams and frame crossbeams that connect the frame longitudinal beams laterally; The bridge housing includes a drive bridge housing; The drive axle housing includes a housing body, a half-shaft sleeve located on both sides of the housing body, a first support arm extending from the half-shaft sleeve along the periphery of the half-shaft sleeve in a first direction, and a first longitudinal push arm extending from the half-shaft sleeve along the periphery of the half-shaft in a second direction away from the first direction. The linkage frame includes a first linkage frame; One end of the first linkage frame is connected to the longitudinal beam of the vehicle frame, and the other end is pivotally connected to the first longitudinal push arm; The vibration damper includes a first vibration damper; One end of the first shock absorber is connected to the longitudinal beam of the vehicle frame, and the other end is connected to the first longitudinal push arm; The air spring includes a first air spring distributed at a first position in the longitudinal direction; The first air spring is mounted on one side of the first support arm and on the other side of the vehicle frame longitudinal beam; The thrust module has a type identification feature that characterizes performance, and the type identification feature of the thrust module is matched with the vehicle's suspension performance requirements. The thrust module includes a first thrust module; The first thrust module is connected to the axle housing body on one side and to the frame crossbeam on the other side.

13. The air suspension system according to claim 12, characterized in that, The axle housing body and the half-shaft sleeve are either cast as a single piece or cast separately and then welded together.

14. The air suspension system according to claim 12, characterized in that... The cross-section of the main body portion of the first support arm extension has one of the following structures: A groove surrounded on three sides; A groove is formed on three sides, with a middle wall extending parallel to the groove wall at the bottom. T-shaped; A ring surrounded on all four sides; H type.

15. The air suspension system according to claim 12, characterized in that... The half-shaft sleeve is either integral or has two separate sections.

16. The air suspension system according to claim 12, characterized in that... The bridge housing is integrally cast and includes a circumferentially extending brake base plate; The brake base plate is used to install the brake shoes of a drum brake or the brake caliper bracket for a disc brake.

17. The air suspension system according to claim 12, characterized in that... The first thrust module includes a first central rotating sleeve, a first central mounting shaft that passes through the first central rotating sleeve and pivots relative to the first central rotating sleeve, and a first side rod and a second side rod that extend from the first central rotating sleeve to both sides at a preset angle. The end of the first side rod is provided with a first side rotating sleeve and a first side mounting shaft that passes through the first side rotating sleeve and pivots relative to the first side rotating sleeve; The end of the second side rod is provided with a second side rotating sleeve and a second side mounting shaft that passes through the second side rotating sleeve and pivots relative to the second side rotating sleeve; The crossbeams of the frame are respectively provided with a first-side mounting seat that mates with the first-side mounting shaft and a second-side mounting seat that mates with the second-side mounting shaft; The bridge housing body is provided with a first central mounting seat that mates with the first central mounting shaft. The first central mounting shaft is mated with the first central mounting base; The first side mounting shaft mates with the first side mounting base; The second side mounting shaft mates with the second side mounting base.

18. The air suspension system according to claim 17, characterized in that... At least one of the first central mounting shaft, the first side mounting shaft, or the second side mounting shaft is segmented, including a cylindrical segment and plate-shaped segments located on both sides of the cylindrical segment.

19. The air suspension system according to claim 12, characterized in that... The first support arm is arranged in pairs; The first support arms, which are arranged in pairs, are distributed on the same side of the half-shaft sleeve and are symmetrically distributed. The air suspension system also includes a transverse connecting beam that laterally connects the pairs of first trailing arms.

20. The air suspension system according to claim 12, characterized in that... The axle housing also includes a trailer axle housing; The trailer axle housing includes an axle, a second support arm extending from the axle along the periphery of the axle in a first direction, and a second longitudinal push arm extending from the axle along the periphery of the axle in a second direction opposite to the first direction. The linkage frame also includes a second linkage frame; One end of the second linkage frame is connected to the longitudinal beam of the vehicle frame, and the other end is pivotally connected to the second longitudinal push arm; The vibration damper includes a second vibration damper; The second shock absorber is connected to the longitudinal beam of the vehicle frame at one end and to the second longitudinal push arm at the other end; The air spring also includes a second air spring distributed at a second longitudinal position; The second air spring is mounted on one side of the second support arm and on the other side of the vehicle frame longitudinal beam; The thrust module includes a second thrust module; The second thrust module is connected to the axle on one side and to the crossbeam of the vehicle frame on the other side.

21. The air suspension system according to claim 12, characterized in that... The drive axle housing has two.

22. The air suspension system according to claim 12, characterized in that... The drive axle housing is used for electrically driven vehicles.

23. An air suspension system, comprising a vehicle frame for mounting a vehicle body, an axle housing for mounting wheels, and air springs, shock absorbers, and a linkage frame connected between the vehicle frame and the axle housing, characterized in that: The vehicle frame includes longitudinal beams; The bridge housing includes a drive bridge housing; The drive axle housing includes a housing body, a half-shaft sleeve located on both sides of the housing body, a first support arm extending from the half-shaft sleeve along the periphery of the half-shaft sleeve in a first direction, and a first longitudinal push arm extending from the half-shaft sleeve along the periphery of the half-shaft in a second direction away from the first direction. The linkage frame includes a first linkage frame; One end of the first linkage frame is connected to the longitudinal beam of the vehicle frame, and the other end is pivotally connected to the first longitudinal push arm; The vibration damper includes a first vibration damper; One end of the first shock absorber is connected to the longitudinal beam of the vehicle frame, and the other end is connected to the first longitudinal push arm; The air spring includes a first air spring distributed at a first position in the longitudinal direction; The first air spring is mounted on one side of the first support arm and on the other side of the vehicle frame longitudinal beam; The first linkage frame extends integrally from the longitudinal beam of the vehicle frame into a fork-shaped arm; The first longitudinal push arm is provided with a cylindrical arm support at its end; The first linkage frame also includes an arm shaft; The tubular arm support is embedded in the fork-shaped arm, and the arm shaft passes through the tubular arm support and is engaged in the fork-shaped arm.

24. The air suspension system according to claim 23, characterized in that... The axle housing body and the half-shaft sleeve of the drive axle housing are either cast as a whole or cast separately and then welded together.

25. The air suspension system according to claim 23, characterized in that... The cross-section of the main body portion of the first support arm extension has one of the following structures: A groove surrounded on three sides; A groove is formed on three sides, with a middle wall extending parallel to the groove wall at the bottom. T-shaped; A ring surrounded on all four sides; H type.

26. The air suspension system according to claim 23, characterized in that... The half-shaft sleeve is either integral or has two separate sections.

27. The air suspension system according to claim 23, characterized in that... The bridge housing is integrally cast and includes a circumferentially extending brake base plate; The brake base plate is used to install the brake shoes of a drum brake or the brake caliper bracket for a disc brake.

28. The air suspension system according to claim 23, characterized in that... The first support arm is arranged in pairs; The first support arms, which are arranged in pairs, are distributed on the same side of the half-shaft sleeve and are symmetrically distributed. The air suspension system also includes a transverse connecting beam that laterally connects the pairs of first trailing arms.

29. The air suspension system according to claim 23, characterized in that... The axle housing also includes a trailer axle housing; The trailer axle housing includes an axle, a second support arm extending from the axle along the periphery of the axle in a first direction, and a second longitudinal push arm extending from the axle along the periphery of the axle in a second direction opposite to the first direction. The linkage frame also includes a second linkage frame; One end of the second linkage frame is connected to the longitudinal beam of the vehicle frame, and the other end is pivotally connected to the second longitudinal push arm; The vibration damper includes a second vibration damper; The second shock absorber is connected to the longitudinal beam of the vehicle frame at one end and to the second longitudinal push arm at the other end; The air spring also includes a second air spring distributed at a second longitudinal position; The second air spring is mounted on one side of the second support arm and on the other side of the vehicle frame longitudinal beam.

30. The air suspension system according to claim 23, characterized in that... The drive axle housing has two.

31. The air suspension system according to claim 23, characterized in that... The drive axle housing is used for electrically driven vehicles.

32. An air suspension system, comprising a frame for mounting a vehicle body, an axle housing for mounting wheels, and an air spring, a shock absorber, a linkage frame, and a thrust module connected between the frame and the axle housing, characterized in that: The frame includes frame longitudinal beams and frame crossbeams that connect the frame longitudinal beams laterally; The bridge housing includes a drive bridge housing; The drive axle housing includes a housing body, a half-shaft sleeve located on both sides of the housing body, a first support arm extending from the half-shaft sleeve along the periphery of the half-shaft sleeve in a first direction, and a third support arm extending from the half-shaft sleeve along the periphery of the half-shaft in a second direction away from the first direction. The linkage frame includes a third linkage frame; The third linkage frame includes a first frame arm and a first rotating arm pivotally connected to the first frame arm; The other end of the first frame arm, away from the first rotating arm, is connected to the longitudinal beam of the vehicle frame. The other end of the first rotating arm, away from the first frame arm, is connected to the bridge housing body. The vibration damper includes a first vibration damper; One end of the first shock absorber is connected to the longitudinal beam of the vehicle frame, and the other end is connected to the third support arm; The air spring includes a first air spring distributed at a first longitudinal position and a third air spring distributed at a third longitudinal position; The first air spring is mounted on one side of the first support arm and on the other side of the vehicle frame longitudinal beam; The third air spring is mounted on one side of the third support arm and on the other side of the vehicle frame longitudinal beam; The thrust module has a type identification feature that characterizes performance, and the type identification feature of the thrust module is matched with the vehicle's suspension performance requirements. The thrust module includes a first thrust module; The first thrust module is connected to the axle housing body on one side and to the frame crossbeam on the other side.

33. The air suspension system according to claim 32, characterized in that... The axle housing body and the half-shaft sleeve of the drive axle housing are either cast as a whole or cast separately and then welded together.

34. The air suspension system according to claim 32, characterized in that... The cross-section of the main body extending from the first or third support arm has one of the following structures: A groove surrounded on three sides; A groove is formed on three sides, with a middle wall extending parallel to the groove wall at the bottom. T-shaped; A ring surrounded on all four sides; H type.

35. The air suspension system according to claim 32, characterized in that... The half-shaft sleeve is either integral or has two separate sections.

36. The air suspension system according to claim 32, characterized in that... The bridge housing is integrally cast and includes a circumferentially extending brake base plate; The brake base plate is used to install the brake shoes of a drum brake or the brake caliper bracket for a disc brake.

37. The air suspension system according to claim 32, characterized in that, The first thrust module includes a first central rotating sleeve, a first central mounting shaft that passes through the first central rotating sleeve and pivots relative to the first central rotating sleeve, and a first side rod and a second side rod that extend from the first central rotating sleeve to both sides at a preset angle. The end of the first side rod is provided with a first side rotating sleeve and a first side mounting shaft that passes through the first side rotating sleeve and pivots relative to the first side rotating sleeve; The end of the second side rod is provided with a second side rotating sleeve and a second side mounting shaft that passes through the second side rotating sleeve and pivots relative to the second side rotating sleeve; The crossbeams of the frame are respectively provided with a first-side mounting seat that mates with the first-side mounting shaft and a second-side mounting seat that mates with the second-side mounting shaft; The bridge housing body is provided with a first central mounting seat that mates with the first central mounting shaft. The first central mounting shaft is mated with the first central mounting base; The first side mounting shaft mates with the first side mounting base; The second side mounting shaft mates with the second side mounting base.

38. The air suspension system according to claim 32, characterized in that... The first thrust module includes a third side rod and a fourth side rod; One end of the third side rod is provided with a third central rotating sleeve and a third central mounting shaft that passes through the third central rotating sleeve and pivots relative to the third central rotating sleeve; the other end is provided with a third side rotating sleeve and a third side mounting shaft that passes through the third side rotating sleeve and pivots relative to the third side rotating sleeve. The fourth side rod has a fourth central rotating sleeve at one end and a fourth central mounting shaft that passes through the fourth central rotating sleeve and pivots relative to the fourth central rotating sleeve. The other end has a fourth side rotating sleeve and a fourth side mounting shaft that passes through the fourth side rotating sleeve and pivots relative to the fourth side rotating sleeve. The bridge housing body is respectively provided with a third central mounting seat that mates with the third central mounting shaft and a fourth central mounting seat that mates with the fourth central mounting shaft. The crossbeams of the frame are respectively provided with a third-side mounting seat that mates with the third-side mounting shaft and a fourth-side mounting seat that mates with the fourth-side mounting shaft. The third central mounting shaft is fitted to the third central mounting base; The fourth central mounting shaft is fitted to the fourth central mounting base; The third-side mounting shaft is fitted to the third-side mounting base; The fourth side mounting shaft is fitted to the fourth side mounting base; The third and fourth side bars are installed at a preset angle.

39. The air suspension system according to claim 32, characterized in that... The first thrust module includes a plate-shaped component; The plate-shaped member includes a middle section and four corner sections extending from the middle section in four directions. The four corner sections gradually narrow from the center to the corners, and adjacent corner sections are connected by an arc transition. The four corner ends are respectively provided with a fifth rotating sleeve and a fifth mounting shaft that passes through the fifth rotating sleeve and pivots relative to the fifth rotating sleeve, a sixth rotating sleeve and a sixth mounting shaft that passes through the sixth rotating sleeve and pivots relative to the sixth rotating sleeve, a seventh rotating sleeve and a seventh mounting shaft that passes through the seventh rotating sleeve and pivots relative to the seventh rotating sleeve, and an eighth rotating sleeve and an eighth mounting shaft that passes through the eighth rotating sleeve and pivots relative to the eighth rotating sleeve; The bridge housing body is respectively provided with a fifth mounting seat that mates with the fifth mounting shaft and a sixth mounting seat that mates with the sixth mounting shaft. The crossbeams of the frame are respectively provided with a seventh mounting seat that mates with the seventh mounting shaft and an eighth mounting seat that mates with the eighth mounting shaft. The fifth mounting shaft is fitted to the fifth mounting base; The sixth mounting shaft is fitted to the sixth mounting base; The seventh mounting shaft is fitted to the seventh mounting base; The eighth mounting shaft is fitted to the eighth mounting base.

40. The air suspension system according to claim 39, characterized in that... The plate-shaped member has reinforcing ribs that protrude along the thickness direction at the contour edge.

41. The air suspension system according to claim 40, characterized in that... The reinforcing ribs are continuously distributed or have openings at preset positions.

42. The air suspension system according to claim 37, characterized in that... At least one of the first central mounting shaft, the first side mounting shaft, or the second side mounting shaft is segmented, including a cylindrical segment and plate-shaped segments located on both sides of the cylindrical segment.

43. The air suspension system according to claim 32, characterized in that... The first frame arm includes a wing plate that is fixed to the plane of the longitudinal beam of the vehicle frame and a three-dimensional sleeve that extends from the thickness direction of the wing plate and whose thickness gradually increases. The first rotating arm has an arm sleeve at its end and an arm sleeve shaft passing through the arm sleeve; The arm sleeve shaft is connected to the three-dimensional sleeve base so that the first rotating arm can pivot relative to the first frame arm.

44. The air suspension system according to claim 32, characterized in that... The linkage frame also includes a fourth linkage frame; The fourth link frame is connected to the longitudinal beam of the vehicle frame at one end and to the first support arm at the other end.

45. The air suspension system according to claim 44, characterized in that... The fourth linkage frame includes a first arm, a second arm, and a shaft. The first arm is equipped with a cylindrical arm support; The second arm is equipped with a three-sided frame support; The three-sided frame supports the cylindrical armrest inside; The rod shaft passes through the cylindrical arm support and connects to the three-sided frame support.

46. ​​The air suspension system according to claim 32, characterized in that... The first support arm is arranged in pairs; The first support arms, which are arranged in pairs, are distributed on the same side of the half-shaft sleeve and are symmetrically distributed. The air suspension system also includes a transverse connecting beam that laterally connects the pairs of first trailing arms.

47. The air suspension system according to claim 32, characterized in that... The axle housing also includes a trailer axle housing; The trailer axle housing includes an axle, a second support arm extending from the axle along its periphery in a first direction, and a fourth support arm extending from the axle along its periphery in a second direction away from the first direction. The linkage frame also includes a fifth linkage frame; The fifth linkage frame includes a first frame arm, a first rotating arm pivotally connected to the first frame arm, and a second rotating arm pivotally connected to the first frame arm; One end of the first frame arm is connected to the longitudinal beam of the vehicle frame, and the other end is pivotally connected to the first rotating arm and the second rotating arm. The other end of the first rotating arm is connected to the half-shaft sleeve; The other end of the second rotating arm is connected to the bridge shaft; The vibration damper also includes a third vibration damper; The third shock absorber is connected to the longitudinal beam of the vehicle frame at one end and to the second support arm at the other end; The air spring also includes a second air spring distributed at a second longitudinal position and a fourth air spring distributed at a fourth longitudinal position; The second air spring is mounted on one side of the second support arm and on the other side of the vehicle frame longitudinal beam; The fourth air spring is mounted on one side of the fourth support arm and on the other side of the vehicle frame longitudinal beam; The thrust module includes a second thrust module; The second thrust module is connected to the axle on one side and to the crossbeam of the vehicle frame on the other side.

48. The air suspension system according to claim 32, characterized in that... The drive axle housing has two.

49. The air suspension system according to claim 32, characterized in that... The drive axle housing is used for electrically driven vehicles.

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