An integrated vehicle frame with floating support and a vehicle

Abstract

The application discloses a kind of integrated frame with floating support, including frame body, the frame body includes frame left side rail, frame right side rail, and several pieces of crossbeam are arranged between frame left side rail and frame right side rail;It also includes left and right rotating support, front and rear rotating support and rigid support that are arranged on the frame main body and connect the frame main body with upper equipment.The left and right rotating support is located in front of the front and rear rotating support, and the rigid support is located in the rear of the frame body.The application sets the upper equipment frame turnover cylinder seat in the inside bottom plate position of the frame longitudinal beam, in front of the special frame tail beam of integrated design, can arrange the turnover cylinder seat and the upper equipment rotation center point position reasonably without using auxiliary frame, make the gravity center of upper equipment drop, ensure driving safety, release frame torsional stress, to avoid damage to chassis frame and upper equipment, improve the service life of vehicle.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of special vehicles, and particularly relates to an integrated vehicle frame with floating support and a vehicle. BACKGROUND

[0002] With the rapid development of special vehicles and their superstructure equipment, the special vehicles are required to have higher bearing capacity, rapid maneuvering ability, strong cross-country ability and light weight, and the superstructure equipment is required to have integrated functions, which puts forward higher requirements on the chassis frame, especially the reduction of the impact and load of the superstructure equipment on the vehicle during driving to ensure the safety and stability of the superstructure equipment.

[0003] The large superstructure equipment needs to be supported by multiple special off-road vehicles due to its large size, long length and large span.

[0004] When the off-road multi-axle special vehicle drives on the Gobi desert, off-road and rough road, the height of the left and right wheels is inconsistent due to the uneven road surface, and the impact load of each wheel is transmitted to the chassis frame through the chassis suspension system, thereby causing the torsion of the chassis frame body and the torsional stress. At the same time, the position of the vehicle frame longitudinal beam main reducer is extended by the cantilever type support structure, so that the local stress of the vehicle frame at the position of the main reducer is too large, which easily causes damage to the vehicle frame longitudinal beam body. In addition, the traditional vehicle uses a sub-frame structure for the superstructure equipment and the chassis frame body, and uses rigid support connection, such as welding and bolt connection. When the special vehicle drives on the off-road, the torsional effect transmitted by the chassis frame is transmitted to the superstructure equipment through the rigid support, which causes the failure of the superstructure equipment due to insufficient strength. The method of improving the strength of the superstructure equipment by changing the superstructure structure increases the weight of the superstructure equipment, and at the same time, the chassis frame bears the entire torsional stress, which seriously damages the frame and affects the normal use of the superstructure equipment and the service life of the chassis.

[0005] The disclosed patent technology "Vehicle-mounted equipment mounting platform" (application number: CN201320728366.1) provides a mounting platform with an upper-mounted equipment connecting seat, which adopts a four-point support structure of two front-to-rear direction pins and two left-to-right direction pins. The frame has a certain amount of movement in the front-to-rear and left-to-right directions, which can avoid completely transmitting the deformation amount of the vehicle frame to the mounting platform. However, if this structure is used for large equipment, the four support points will be subjected to excessive stress due to the large size, weight, length, and span of large upper-mounted equipment, leading to damage to the support or vehicle frame. If two structures of the same type are used in series, the front-to-rear direction cannot be floating if both are installed in the front-to-rear direction, and the left-to-right direction cannot be floating if both are installed in the left-to-right direction. At the same time, the installation of the mounting platform increases the height of the center of gravity of the upper-mounted equipment and the overall vehicle mass, affecting the safety of the vehicle during driving. The disclosed patent technology "Floating auxiliary frame device with damping function" (application number: CN202122601602.0) sets a first floating frame, a first auxiliary frame, a second auxiliary frame, and a second floating frame on the chassis frame girder. The first floating frame at the most front position and the second floating frame at the most rear position realize the left-to-right rotation of the upper-mounted equipment, and the first auxiliary frame and the second auxiliary frame at the middle position are provided with a rotating shaft. However, in actual application, the existence of the transverse rotating shaft at the middle position limits the left-to-right rotation of the first floating frame at the most front position and the second floating frame at the most rear position. On the one hand, when the upper-mounted equipment is subjected to left-to-right torsion, torsional stress is caused to the first auxiliary frame and the second auxiliary frame at the middle position, and there is a risk of tearing. For large upper-mounted equipment, the torsional stress is greater, and the risk of tearing is more serious. On the other hand, to solve this problem, a certain gap needs to be left between the rotating shaft and the shaft sleeve. However, if the gap is too large, the relative movement of the rotating shaft and the shaft sleeve will be greater, accelerating the wear of the two. If a larger impact force is encountered, irreversible mechanical damage may occur at the contact between the shaft and the shaft sleeve. This structure has an insurmountable defect. SUMMARY

[0006] To overcome the shortcomings of the prior art, the present application provides an integrated frame with floating support and a vehicle, which cancels the auxiliary frame structure of the upper-mounted equipment or similar mounting platform structure, can reduce the overall vehicle mass center position and weight, and improve the safety of vehicle driving. At the same time, through the relative movement of the floating support frame structure and the chassis frame, the torsional stress of the frame is released to avoid damage to the chassis frame and the upper-mounted equipment, and the service life of the vehicle is improved.

[0007] Further, in order to realize the requirement of large stroke turning of the superstructure equipment, the lower support of the superstructure equipment turning cylinder is arranged at the position of the bottom plate of the special vehicle frame rear beam integrated with the vehicle frame longitudinal beam, so that the position of the turning cylinder seat and the rotation center point can be arranged reasonably without using the sub-frame, the gravity center of the superstructure equipment is lowered, the driving safety is ensured, and further, the rear beam of the vehicle frame is designed to be integrated with the vehicle frame longitudinal beam, and the requirements of the cylinder support leg support during the operation of the superstructure equipment and the bearing requirement during the turning of the superstructure equipment are considered.

[0008] In order to realize the above effects, as a first aspect of the present application, an integrated vehicle frame with floating support is provided, which comprises a vehicle frame body, the vehicle frame body comprising a left vehicle frame longitudinal beam, a right vehicle frame longitudinal beam, and a plurality of cross beams arranged between the left vehicle frame longitudinal beam and the right vehicle frame longitudinal beam; further comprising left and right rotating support members, front and rear rotating support members, and rigid support members arranged on the vehicle frame body for connecting the vehicle frame body and the superstructure equipment.

[0009] Preferably, the rigid support members are located at the rear of the vehicle frame body.

[0010] Further, the left and right rotating support members are located in front of the front and rear rotating support members. The relative positions of the left and right rotating support members and the front and rear rotating support members are determined according to the gravity center position of the superstructure equipment. In the embodiment of the present application, the gravity center of the superstructure equipment is located at the rear, and the moment generated by the front and rear torsion effect of the vehicle during acceleration and deceleration is small. Assuming that the gravity center of the superstructure equipment is located at the front, the front and rear rotating support members can be placed on the front side, so as to overcome the larger front and rear moments generated by the vehicle during rapid acceleration and rapid braking.

[0011] Preferably, the left and right rotating support members comprise a first support, the cross beam comprises a bridge cross beam, and the first support is arranged on the bridge cross beam; the first support comprises a first support fixing seat, two first support hinge seats arranged parallel to the first cross beam and fixed on the first support fixing seat, and a first mounting hole arranged at the middle position of the two first support hinge seats for penetrating a superstructure equipment mounting pin.

[0012] Preferably, the left and right rotating support members comprise a second support, the cross beam comprises a two-bridge cross beam, and the second support is arranged on the two-bridge cross beam; the second support comprises a second support main structure composed of a second support bottom plate, a second support front upright plate, a second support upper plate, and a second support rear upright plate symmetrically arranged with the second support front upright plate, and rubber blocks fixed on the left side and the right side above the second support upper plate; a second mounting hole for the superstructure equipment mounting pin is arranged at the middle position of the second support in the front and rear directions, and the second mounting hole is concentric with the first mounting hole on the first support.

[0013] Preferably, the left and right rotating support includes a third support, rubber blocks are fixed on the left and right sides of the top of the third support, a third mounting hole for mounting a pin shaft of the upper equipment is arranged on the third support in the front and back directions at the middle position of the third support, the third mounting hole is concentric with the first mounting hole on the first support, and the third support is fixed to the vehicle frame through a third support mounting support.

[0014] Preferably, the left and right rotating support includes a fourth support, the cross beam includes a three-bridge front cross beam, and the fourth support is arranged on the three-bridge front cross beam; a fourth mounting hole for mounting a pin shaft of the upper equipment is arranged on the fourth support in the front and back directions at the middle position of the upper portion of the fourth support, and the fourth mounting hole is concentric with the first mounting hole on the first support.

[0015] Preferably, the front and back rotating support includes a fifth support, the fifth support is fixedly connected with the vehicle frame body, the upper portion of the fifth support extends to the outside of the vehicle frame longitudinal beam, fifth support mounting lugs are arranged at the two ends of the top of the fifth support, and fifth mounting holes that are concentric and have horizontal shafts are arranged on the two fifth support mounting lugs.

[0016] Preferably, the rigid support is a sixth support, the cross beam includes a four-bridge cross beam, the four-bridge cross beam structure includes a four-bridge cross beam bottom plate, a four-bridge cross beam front vertical plate, a four-bridge cross beam right vertical plate, a four-bridge suspension system interface right vertical plate, a four-bridge cross beam upper plate, a four-bridge cross beam left vertical plate, a four-bridge suspension system interface left vertical plate, and a four-bridge cross beam rear vertical plate, the four-bridge cross beam bottom plate, the four-bridge cross beam front vertical plate, the four-bridge cross beam right vertical plate, the four-bridge cross beam upper plate, the four-bridge cross beam rear vertical plate, and the four-bridge cross beam left vertical plate are connected with each other to form a main structure of the four-bridge cross beam, the four-bridge cross beam upper plate is the sixth support, and bolt holes are left in the fourth-bridge cross beam upper plate for connecting with the upper equipment.

[0017] Further, rubber limiting blocks are arranged on the two sides of the second support and the third support to limit the maximum stroke when the upper equipment is twisted left and right and to ensure the safety of the upper equipment.

[0018] Preferably, the first support, the second support, the third support, and the fourth support are sequentially arranged on the vehicle frame body.

[0019] The first support, the second support, the third support, and the fourth support directly arranged on the vehicle frame are used as the left and right rotating support, and the fifth support is used as the front and back rotating support, so that the floating support of the upper equipment is realized. Compared with small equipment, the off-road special vehicle carrying the upper equipment has large mass and large inertial force, and when the vehicle is accelerated or braked in an emergency, a large inertial force is generated. If a full-floating type support is directly used, there is a large safety hazard. The action force of left and right turning and front and back turning is large, and the support is easily damaged. The rigid connection of the sixth support is arranged in the application, so that the problem of serious stress on the connecting kinematic pairs of the floating supports is avoided, and structural damage is avoided.

[0020] Preferably, the main reducer installation interface is arranged on the bottom of the one-bridge crossbeam, the two-bridge crossbeam, the three-bridge crossbeam and the four-bridge crossbeam structure respectively, and is used for installing the main reducer. The suspension system interface is arranged on the left and right longitudinal beams of the chassis frame body, and the main reducer is connected with the suspension system through the suspension system interface. The vehicle main reducer is installed between the left and right longitudinal beams of the chassis frame body, thereby improving the stress condition of the chassis frame body compared with the cantilever type main reducer installation structure of the small cross-section chassis frame.

[0021] Further, the tail beam is fixedly connected to the tail part of the chassis frame body, and the tail beam structure comprises a tail beam body perpendicular to the chassis frame body and four tail beam rear rotary lugs fixedly welded to the tail beam body. The tail beam rear rotary lugs are provided with coaxial hinge holes with horizontal shafts, and are used for rotatably arranging the upper equipment through the pin shaft. Further, the chassis lower reinforcing plate is arranged at the bottom end of the connection part between the rear of the chassis frame body and the tail beam, the chassis upper reinforcing plate is arranged at the top end of the connection part, and the reinforcing bent plates are arranged at both sides of the connection part, so as to ensure the connection firmness of the tail beam.

[0022] Preferably, the five-bridge crossbeam is arranged in front of the tail beam, the suspension system interface is arranged on both sides of the five-bridge crossbeam, and the chassis turnover oil cylinder seat is arranged in front. The chassis turnover oil cylinder seat structure comprises a turnover oil cylinder seat base fixedly connected to the left and right longitudinal beams of the chassis frame body, a turnover oil cylinder hinge seat with a hinge hole fixedly connected to the turnover oil cylinder seat base, and a turnover oil cylinder seat first reinforcing beam fixedly welded to the front end of the turnover oil cylinder hinge seat and a turnover oil cylinder seat second reinforcing beam fixedly welded to the rear end of the turnover oil cylinder hinge seat. The chassis turnover oil cylinder seat is connected to the left and right longitudinal beams of the chassis, which can be used as the oil cylinder seat of the turnover oil cylinder connected to the chassis and the reinforcing beam of the left and right sides of the chassis.

[0023] When the upper equipment is turned over, the chassis turnover oil cylinder seat tends to move in the front-rear direction and downward. The turnover oil cylinder seat first reinforcing beam is arranged in front of the chassis turnover oil cylinder seat to limit the forward movement of the chassis turnover oil cylinder seat, and the turnover oil cylinder seat second reinforcing beam is arranged behind the chassis turnover oil cylinder seat to limit the rearward movement of the chassis turnover oil cylinder seat.

[0024] As a typical embodiment, the left and right longitudinal beams of the chassis frame body are inserted into the internal structure of the tail beam and are welded with the front end mounting plate of the tail beam. The tail beam and the longitudinal beams of the chassis are connected in the plug-in mode. When the upper equipment is turned over, the tail beam tends to move in the front-rear direction and tends to move upward and downward. The left and right longitudinal beams are inserted into the tail beam body to limit the displacement of the tail beam when the upper equipment is turned over.

[0025] Preferably, the left and right longitudinal beams of the frame are connected to the tail beam at a position with a variable cross-section structure with a high front and a low back, and specifically, the upper surface is gradually lowered to avoid the installation space of the upper equipment.

[0026] As another object of the present application, it is to provide a vehicle comprising the integrated frame with floating support and the upper equipment arranged on the frame body, wherein the upper equipment comprises an upper equipment connecting frame structure and an upper equipment body.

[0027] The upper equipment body comprises a front body and a rear body, the front body is hingedly connected to a turnover oil cylinder at the bottom, the rear body is provided with an upper equipment turnover seat at the bottom, the upper equipment turnover seat is hingedly connected to the rear turning lug of the tail beam of the frame, and the rear turning lug serves as the turnover center of the upper equipment body; the other end of the turnover oil cylinder is hingedly connected to the frame turnover oil cylinder seat in front of the frame.

[0028] Compared with the prior art, the present application has the following advantages:

[0029] (1) The present application provides a special vehicle frame with floating support and suitable for the turnover of upper equipment, wherein the left and right rotating supports, the front and rear rotating supports and the rigid supports connected to the upper equipment are arranged on the frame body, the frame and the upper equipment are connected in a floating manner, the large torque generated when the vehicle accelerates and decelerates or turns is overcome, the damage caused by the excessive torsional stress on the frame is avoided, the normal use of the upper equipment is ensured, and the service life of the chassis is prolonged.

[0030] (2) The technical scheme provided by the present application reasonably arranges the positions of the left and right rotating support members and the front and rear rotating support members, avoids the mutual restriction between the rotating support structures, and the disadvantage of affecting the action;

[0031] (3) The floating frame structure and the rear overturning tail beam structure designed in an integrated manner are adopted, the sub-frame and other mounting components are cancelled, the frame load is reduced, the frame body can bear various loads in the overturning process of the upper-mounted equipment, the overall weight is reduced, the frame provided by the present application arranges the overturning cylinder support under the frame longitudinal beam, so that the stroke of the upper-mounted overturning cylinder is shortened, and the rear end of the frame is set as a variable cross-section shape, so that a larger mounting space is provided for the overturning structure of the upper-mounted equipment;

[0032] (4) The frame overturning cylinder seat of the upper-mounted equipment is arranged at the position of the internal bottom plate of the frame longitudinal beam, and is arranged in front of the tail beam of the integrated special frame, the frame overturning cylinder seat and the rotation center point are reasonably arranged without using the sub-frame, the gravity center of the upper-mounted equipment is lowered, the driving safety is ensured, and further, the tail beam of the frame is designed as an integral part of the frame longitudinal beam, and the requirements of the cylinder support leg support during the operation of the upper-mounted equipment and the bearing requirement during the overturning of the upper-mounted equipment are met;

[0033] (5) The present application provides a large-section frame structure, so that the vehicle main reducer is installed between the left longitudinal beam and the right longitudinal beam of the frame body, the main reducer installation is integrated with the frame longitudinal beam connection, and the stress of the frame of the independent suspension vehicle type is effectively improved. BRIEF DESCRIPTION OF DRAWINGS

[0034] The drawings accompanying the specification of the present application form a part thereof, serve to provide further understanding of the present application, and together with the description of the exemplary embodiments of the present application and the explanation thereof serve to explain the present application, and do not constitute an improper limitation of the present application.

[0035] Figure 1 is a floating support frame structure layout diagram in embodiment 1 of the present application.

[0036] Figure 2 is a floating support frame upper reinforcing beam layout diagram in embodiment 1 of the present application.

[0037] Figure 3 is a first support schematic diagram in the embodiment of the present application.

[0038] Figure 4 is a second support schematic diagram in embodiment 1 of the present application.

[0039] Figure 5 is a third support schematic diagram in embodiment 1 of the present application.

[0040] Figure 6is the fourth support schematic diagram in embodiment 1 of the present application.

[0041] Figure 7 is the fifth support schematic diagram in embodiment 1 of the present application.

[0042] Figure 8 is the sixth support schematic diagram in embodiment 1 of the present application.

[0043] Figure 9 is the oblique shaft side view of the tail beam of the vehicle frame in embodiment 1 of the present application.

[0044] Figure 10 is the rear view of the tail beam of the vehicle frame in embodiment 1 of the present application.

[0045] Figure 11 is the structure diagram of the turning cylinder seat of the vehicle frame in embodiment 1 of the present application.

[0046] Figure 12 is the side view of the vehicle frame body and the tail beam in embodiment 1 of the present application.

[0047] Figure 13 is the schematic diagram of the rotation angle of the equipment on the frame structure provided by the present application.

[0048] Figure 14 is the schematic diagram of the equipment structure in the vehicle structure provided by embodiment 2 of the present application.

[0049] Figure 15 is the schematic diagram of the equipment connecting piece structure in the vehicle structure provided by embodiment 2 of the present application.

[0050] Figure 16 is the connection layout of the equipment and the floating support frame structure in the vehicle structure provided by embodiment 2 of the present application.

[0051] Figure 17 is the schematic diagram of the equipment body structure in the vehicle structure provided by embodiment 2 of the present application.

[0052] Figure 18 is the schematic diagram of the first support connecting structure of the one-bridge cross beam in the vehicle frame body structure provided by embodiment 1 of the present application.

[0053] Figure 19 is the schematic diagram of the two-bridge cross beam structure in the vehicle frame body structure provided by embodiment 1 of the present application.

[0054] Figure 20 is the schematic diagram of the four-bridge cross beam structure in the vehicle frame body structure provided by embodiment 1 of the present application.

[0055] Figure 21 is the schematic diagram of the five-bridge cross beam structure in the vehicle frame body structure provided by embodiment 1 of the present application.

[0056] Figure 22 Effect schematic view of the frame structure designed in a non-integrated manner.

[0057] Figure 23 Effect schematic view of the frame structure designed in an integrated manner.

[0058] In the figure, 1-frame body, 2-cross beam, 3-support, 4-frame tail beam, 5-frame turnover cylinder seat, 6-equipment on the upper part;

[0059] 11-frame right longitudinal beam, 12-suspension swing arm reinforcing beam, 13-steering reinforcing beam, 14-frame left longitudinal beam, 15-suspension swing arm support, 16-third support mounting seat;

[0060] 21-first-axle cross beam, 22-second-axle cross beam, 23-third-axle front cross beam, 24-third-axle cross beam, 25-fourth-axle cross beam, 26-fifth-axle cross beam;

[0061] 31-first support, 32-second support, 33-third support, 34-fourth support, 35-fifth support, 36-sixth support;

[0062] 41-tail beam body, 42-tail beam rear turning lug, 43-cylinder support, 44-frame lower reinforcing plate, 45-frame upper reinforcing plate, 46-reinforcing bent plate;

[0063] 51-turnover cylinder seat base, 52-turnover cylinder hinged seat, 53-first reinforcing beam of the turnover cylinder seat, 54-second reinforcing beam of the turnover cylinder seat;

[0064] 61-equipment on the upper part connecting frame structure, 62-equipment on the upper part body;

[0065] 100-main reducer, 101-cab mounting space, 102-frame upper plane, 103-frame lower plane, 104-equipment on the upper part gravity center position, 105-chassis gravity center position, 106-vehicle gravity center position;

[0066] 151-first-axle suspension swing arm support 151, 152-second-axle suspension swing arm support, 153-third-axle suspension swing arm support, 154-fourth-axle suspension swing arm support, 155-fifth-axle suspension swing arm support;

[0067] 161-third support left mounting support, 162-third support right mounting support;

[0068] 211-first support mounting support upper plate, 212-first support mounting support left vertical plate, 213-first support mounting support right vertical plate;

[0069] 221 - two-bridge crossbeam bottom plate, 222 - two-bridge crossbeam front upright plate, 223 - two-bridge crossbeam right upright plate, 224 - two-bridge suspension system interface right upright plate, 225 - two-bridge crossbeam upper plate, 226 - two-bridge crossbeam left upright plate 226, 227 - two-bridge suspension system interface left upright plate 227, 228 - two-bridge main reducer installation interface;

[0070] 251 - four-bridge crossbeam bottom plate, 252 - four-bridge crossbeam front upright plate, 253 - four-bridge crossbeam right upright plate, 254 - four-bridge suspension system interface right upright plate, 255 - four-bridge crossbeam upper plate, 256 - four-bridge crossbeam left upright plate, 257 - four-bridge suspension system interface left upright plate, 258 - four-bridge main reducer installation interface;

[0071] 261 - five-bridge crossbeam bottom plate, 262 - five-bridge crossbeam front upright plate, 263 - five-bridge crossbeam right upright plate, 264 - five-bridge crossbeam right upper plate, 265 - five-bridge crossbeam middle upper plate, 266 - five-bridge crossbeam left upper plate, 267 - five-bridge crossbeam left upright plate;

[0072] 311 - first support fixed seat, 312 - first support hinged seat, 313 - first installation hole;

[0073] 321 - second support bottom plate, 322 - second support front upright plate, 323 - second support right rubber block, 324 - second support right rubber block mounting seat, 325 - second support left rubber block, 326 - second support left rubber block mounting seat, 327 - second support upper plate, 328 - second installation hole;

[0074] 331 - third support bottom plate, 332 - third support front upright plate, 333 - three-bridge right rubber block, 334 - third support right rubber block mounting seat, 335 - third support left rubber block, 336 - third support left rubber block mounting seat, 337 - third support upper plate, 338 - third support installation hole;

[0075] 341 - fourth support lower plate, 342 - fourth support right bottom plate, 343 - fourth support front upright plate, 344 - fourth support upper plate, 345 - fourth support installation hole, 346 - fourth support left upright plate;

[0076] 351 - fifth support bottom plate, 352 - fifth support front upright plate, 353 - fifth support left upright plate, 354 - fifth support upper plate, 355 - fifth support installation lug, 356 - fifth installation hole;

[0077] 361 - bolt installation hole;

[0078] 611 - first connecting piece, 612 - second connecting piece, 613 - third connecting piece, 614 - fourth connecting piece, 615 - fifth connecting piece, 616 - sixth connecting piece;

[0079] 621 - front part of the body, 622 - rear part of the body, 623 - tilting cylinder, 624 - upper equipment tilting seat. DETAILED DESCRIPTION

[0080] It should be noted that the following detailed description is exemplary in nature and is intended to provide further description of the application. Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.

[0081] It is also important to note that the terms used herein are not intended to limit the particular embodiments of the present application to the preferred embodiments described. Rather, the terms are used only to describe specific embodiments of the present application. As used herein, the singular form "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises" and / or "comprising", when used in this specification, specify the presence of stated features, steps, operations, devices, components and / or combinations thereof, but do not preclude the presence or addition of one or more other features, steps, operations, devices, components and / or combinations thereof.

[0082] When the off-road special vehicle is running on off-road surface, the left and right wheels have different heights, which causes the frame to twist in the left and right directions, and the front and rear wheels have different heights, which causes the frame to twist in the front and rear directions. At this time, if the upper equipment is directly rigidly connected with the frame, the upper equipment will bear the left and right direction torsional stress and the front and rear direction torsional stress transmitted by the frame.

[0083] Example 1: An integrated frame with floating support

[0084] As Figure 1 and Figure 2As shown, it comprises a chassis frame body 1, which comprises a frame left side rail 14 and a frame right side rail 11, and six groups of cross beam assemblies 2 arranged in sequence from front to back between the frame left side rail 14 and the frame right side rail 11, connecting the frame left side rail 14 and the frame right side rail 11, and several groups of suspension swing arm reinforcing beams 12 arranged at the suspension and several groups of steering reinforcing beams 13 arranged at the steering bridge; the six groups of cross beam assemblies 2 comprise a first axle cross beam 21, a second axle cross beam 22, a third axle front cross beam 23, a third axle cross beam 24, a fourth axle cross beam 25 and a fifth axle cross beam 26 arranged on the first axle, the second axle, the third axle front, the third axle, the fourth axle and the fifth axle respectively; the frame left side rail 14 and the frame right side rail 11 are connected by the first axle cross beam 21, the second axle cross beam 22, the third axle front cross beam 23, the third axle cross beam 24, the fourth axle cross beam 25 and the fifth axle cross beam 26 through bolt connection. The first axle main reducer is installed on the first axle cross beam 21, the second axle main reducer is installed on the second axle cross beam 22, the third axle main reducer is installed on the third axle cross beam 24, and the fourth axle main reducer is installed on the fourth axle cross beam 25. Five pairs of suspension swing arm supports 15 are arranged in the frame body 1, which are a first axle suspension swing arm support 151, a second axle suspension swing arm support 152, a third axle suspension swing arm support 153, a fourth axle suspension swing arm support 154 and a fifth axle suspension swing arm support 155 arranged on the left side rail and the right side rail respectively, so as to connect the suspension system components (suspension system swing arm) with the frame body.

[0085] The top of the first axle cross beam 21 (the first support is arranged on the first axle cross beam) is fixedly provided with a first support mounting support, like Figure 18 As shown, the first support mounting support is composed of a first support mounting support upper plate 211, a first support mounting support left vertical plate 212 and a first support mounting support right vertical plate 213, and the first support mounting support upper plate 211 is welded with the first support mounting support left vertical plate 212 and the first support mounting support right vertical plate 212. The first support mounting support upper plate 211 has a first support support bolt mounting hole, and the first support 31 is connected through the bolt.

[0086] The second axle cross beam 22 (the second support is arranged on the second axle cross beam) has a structure like Figure 19 As shown, the top is provided with a second axle cross beam upper plate 225, and the second support 32 is fixed to the second axle cross beam upper plate 225 of the second axle cross beam 22 through a bolt. Specifically, the second axle cross beam 22 comprises a second axle cross beam bottom plate 221, a second axle cross beam front vertical plate 222, a second axle cross beam right vertical plate 223, a second axle suspension system interface (an oil gas spring mounting interface in the suspension system) right vertical plate 224, a second axle cross beam upper plate 225, a second axle cross beam left vertical plate 226, a second axle suspension system interface (an oil gas spring mounting interface in the suspension system) left vertical plate 227, a second axle cross beam rear vertical plate and a second axle main reducer mounting interface 228.

[0087] The second bridge cross beam bottom plate 221, the second bridge cross beam front vertical plate 222, the second bridge cross beam right vertical plate 223, the second bridge cross beam upper plate 225, the second bridge cross beam rear vertical plate 8, and the second bridge cross beam left vertical plate 226 are mutually welded as the main body structure of the second bridge cross beam 22, the lower part of the second bridge cross beam bottom plate 221 is welded with a second bridge main reducer mounting interface 228 for connecting the second bridge main reducer; the second bridge cross beam left vertical plate 226 and the second bridge cross beam right vertical plate 223 are provided with bolt holes and are connected with the frame left longitudinal beam 14 and the frame right longitudinal beam 11 respectively through bolts; the lower part and both sides of the second bridge cross beam front vertical plate 222 and the second bridge cross beam rear vertical plate are provided with pipe and line threading holes; the second bridge suspension system interface left vertical plate 227 and the second bridge suspension system interface right vertical plate 224 are welded with the second bridge cross beam left vertical plate 226, the second bridge cross beam right vertical plate 223, and the second bridge cross beam upper plate 225 respectively, and form a bridge suspension system interface with the outer extension structure of the second bridge cross beam front vertical plate 222, which is connected with the suspension system (oil gas spring).

[0088] The third support 33 is arranged between the second bridge cross beam 22 and the third bridge front cross beam 23.

[0089] The fourth support 34 is arranged at the top of the third bridge front cross beam 23.

[0090] The fifth support 35 is arranged between the third bridge cross beam 24 and the fourth bridge cross beam 25.

[0091] The fourth bridge cross beam 25 is shown in the structure as Figure 20 The fourth bridge cross beam 25 is shown in the structure as

[0092] The four-axle crossbeam base plate 251, four-axle crossbeam front upright plate 252, four-axle crossbeam right upright plate 253, four-axle crossbeam top plate 255, four-axle crossbeam rear upright plate 258, and four-axle crossbeam left upright plate 256 are welded together as the main structure of the four-axle crossbeam 25. A four-axle main reducer mounting interface 259 is welded to the lower part of the four-axle crossbeam base plate 251 for connecting the four-axle main reducer. Bolt holes are provided on the four-axle crossbeam left upright plate 256 and four-axle crossbeam right upright plate 253, which are respectively bolted to the left side of the vehicle frame. The longitudinal beam 14 is connected to the right longitudinal beam 11 of the frame; the lower part and both sides of the front upright plate 252 and the rear upright plate 258 of the four-axle crossbeam are provided with pipe and wiring holes; the left upright plate 257 and the right upright plate 254 of the four-axle suspension system interface are welded to the left upright plate 256, the right upright plate 253 and the upper plate 255 of the second axle crossbeam, respectively, and together with the extended structure of the front upright plate 252 of the four-axle crossbeam, they form the four-axle suspension system interface, which is connected to the suspension system (oil spring). The upper plate 255 of the four-axle crossbeam serves as the sixth support 36 and has bolt holes for connection to the superstructure equipment.

[0093] The structure of the five-bridge crossbeam 26 is as follows: Figure 21 As shown, it consists of the bottom plate 261 of the five-bridge crossbeam, the front upright plate 262 of the five-bridge crossbeam, the right upright plate 263 of the five-bridge crossbeam, the upper right plate 264 of the five-bridge crossbeam, the upper middle plate 265 of the five-bridge crossbeam, the upper left plate 266 of the five-bridge crossbeam, the left upright plate 267 of the five-bridge crossbeam, and the rear upright plate of the five-bridge crossbeam.

[0094] The five-axle crossbeam bottom plate 261, five-axle crossbeam front upright plate 262, five-axle crossbeam right upright plate 263, five-axle crossbeam upper right plate 264, five-axle crossbeam upper middle plate 265, five-axle crossbeam upper left plate 266, five-axle crossbeam left upright plate 267, and five-axle crossbeam rear upright plate are welded together as the main structure of the five-axle crossbeam 26. The five-axle crossbeam left upright plate 267 and five-axle crossbeam right upright plate 263 are provided with bolt holes, which are connected to the left longitudinal beam 14 and the right longitudinal beam 11 of the frame respectively by bolts. Pipe and wiring holes are provided on both sides of the five-axle crossbeam front upright plate 262 and five-axle crossbeam rear upright plate. The extended structure of the five-axle crossbeam front upright plate 262 and five-axle crossbeam rear upright plate 268 forms the five-axle suspension system interface, which is connected to the suspension system (oil spring). The upper right plate 264, the upper middle plate 265, and the upper left plate 266 of the five-bridge crossbeam close the activity space of the upper equipment tilting cylinder 623.

[0095] The chassis frame body 1 is provided with a plurality of superstructure equipment support members 3. The superstructure equipment support members 3 include, from front to back, a first support 31, a second support 32, a third support 33, a fourth support 34, a fifth support 35, and a sixth support 36. The first support 31 is disposed on a crossbeam 21 of an axle, and the structure of the first support 31 is as follows: Figure 3As shown, it includes a first support fixed seat 311, two first support hinge seats 312 fixed on the first support fixed seat 311 and parallel to the first cross beam 21, and a first mounting hole 313 arranged at the middle position of the two first support hinge seats 312 for penetrating the upper equipment mounting pin shaft.

[0096] The second support 32 is as shown Figure 4 As shown, it includes a second support bottom plate 321, a second support front vertical plate 322, a second support upper plate 327, a second support rear vertical plate symmetrically arranged with the second support front vertical plate 322, a second support mounting hole 328, and a second support right rubber block 323, a second support right rubber block mounting seat 324, a second support left rubber block 325, and a second support left rubber block mounting seat 326.

[0097] The second support bottom plate 321, the second support front vertical plate 322, the second support upper plate 327, and the second support rear vertical plate are welded with each other to form the main structure of the second support 32. The second support left rubber block mounting seat 326 and the second support right rubber block mounting seat 324 are welded on the left side and the right side above the second support upper plate 327, respectively. The second support left rubber block 325 and the second support right rubber block 323 are installed in the corresponding rubber block mounting seats, respectively.

[0098] The second support bottom plate 321 is fixed to the top of the second bridge cross beam 22. The second support front vertical plate 322 and the second support rear vertical plate at the middle position of the upper part of the second support 22 are provided with a second mounting hole 328 for the upper equipment mounting pin shaft in the front-rear direction. The second mounting hole 328 is concentric with the first mounting hole 313 on the first support 31.

[0099] As shown Figure 1 And Figure 5 As shown, the third support 33 includes a third support bottom plate 331, a third support front vertical plate 332, a third support upper plate 337, a third support rear vertical plate symmetrically arranged with the third support front vertical plate 332, a third support mounting hole 338, and a third support right rubber block 333, a third support right rubber block mounting seat 334, a third support left rubber block 335, and a third support left rubber block mounting seat 336.

[0100] The third support bottom plate 331, the third support front vertical plate 332, the third support upper plate 337, and the third support rear vertical plate are welded with each other to form the main structure of the third support 33. The third support left rubber block mounting seat 336 and the third support right rubber block mounting seat 334 are welded on the left side and the right side above the third support upper plate 337, respectively. The third support left rubber block 335 and the third support right rubber block 333 are installed in the corresponding rubber block mounting seats, respectively.

[0101] As shown Figure 1As shown, the third support mounting seat 16 is initially arranged in the chassis body 1 at the position behind the two-axle of the left chassis longitudinal beam 14 and the right chassis longitudinal beam 11, which is composed of the third support left mounting seat 161 arranged at the corresponding position of the left longitudinal beam and the third support right mounting seat 162 arranged at the corresponding position of the right longitudinal beam. The third support left mounting seat 161 is consistent with the third support right mounting seat 162 in structure. The third support 33 is fixed to the chassis through the third support mounting seat 16.

[0102] The third support 33 is basically consistent with the second support 32 in structure, except that in the present embodiment, the third support 33 is provided with a transmission shaft avoiding space at the bottom. The third support bottom plate 331 is fixed to the third support mounting seat 16 in the chassis body through bolts. The third mounting hole 338 for mounting the pin shaft of the upper-mounted equipment is arranged in the front-rear direction at the intermediate position of the third support front vertical plate 332 and the third support rear vertical plate 329 at the upper part of the third support 33. The third mounting hole 338 is concentric with the first mounting hole 313 on the first support 31.

[0103] As shown in Figure 1 and Figure 6 The fourth support 34 is arranged on the three-axle front cross beam 23 of the chassis body 1. The structure includes a fourth support lower plate 341, a fourth support right bottom plate 342, a fourth support front vertical plate 343, a fourth support upper plate 344, a fourth support mounting hole 345, a fourth support left vertical plate 346, and a fourth support rear vertical plate symmetrically arranged with the fourth support front vertical plate 343.

[0104] The fourth support lower plate 341, the fourth support right bottom plate 342, the fourth support front vertical plate 343, the fourth support upper plate 344, the fourth support left vertical plate 346, and the fourth support rear vertical plate 347 are mutually welded to form the main structure of the fourth support 34. The fourth mounting hole 345 for mounting the pin shaft of the upper-mounted equipment is arranged in the front-rear direction at the intermediate position of the fourth support front vertical plate 343 and the fourth support rear vertical plate 347 at the upper part of the fourth support 34. The fourth mounting hole 345 is concentric with the first mounting hole 313 on the first support 31.

[0105] As shown in Figure 1 and Figure 7As shown, the fifth support 35 is connected to the chassis frame body 1 by bolts, and the upper part of the fifth support 35 extends to the outside of the frame longitudinal beam, including a fifth support bottom plate 351, a fifth support front vertical plate 352, a fifth support left vertical plate 353, a fifth support right vertical plate symmetrically arranged with the fifth support left vertical plate 352, a fifth support rear vertical plate symmetrically arranged with the fifth support front vertical plate 352, a fifth support upper plate 354, the fifth support bottom plate 351, the fifth support front vertical plate 352, the fifth support left vertical plate 353, the fifth support right vertical plate, the fifth support rear vertical plate, and the fifth support upper plate 354 are welded with each other to form the main structure of the fifth support, and a fifth support mounting lug 355 is arranged at both ends of the fifth support upper plate 354, and a concentric fifth mounting hole 356 with a horizontal shaft is arranged on the fifth support mounting lug 355. Since the pin shaft penetrating through the fifth support mounting lug 355 is short, the limiting effect on the front and left and right rotating support members is small, the gaps left by the second support 32, the third support 33, and the fourth support 34 in the front and rear directions and the gaps left by the fifth support 35 in the left and right directions do not have to be too large, the friction and impact force between the pin shaft and the lug or mounting hole are avoided, and the service life of the structure is prolonged.

[0106] As shown in Figure 1 and Figure 8 shown, the sixth support 36 is arranged on the fifth cross beam 25 of the chassis frame body 1, which is a four-bridge cross beam upper plate 255, and the sixth support 36 is provided with a bolt mounting hole 361 for the upper-mounted equipment.

[0107] As shown in Figure 1 , Figures 9-12 the frame left longitudinal beam 14 and the frame right longitudinal beam 11 of the chassis frame body 1 are welded and fixed with the frame tail beam 4 at the tail part, the frame tail beam 4 includes a tail beam main body 41 perpendicular to the chassis frame body 1 and four tail beam rear rotary lugs 42 vertically welded and fixed with the tail beam main body 41, the tail beam rear rotary lugs 42 are provided with concentric hinge holes with a horizontal shaft, and the upper-mounted equipment is rotatably arranged by a pin shaft. The cylinder leg mounting interface of the upper-mounted equipment is arranged on the left and right sides of the frame tail beam 4, and the tail beam main body 41 is provided with arc-shaped cylinder supports 43 on both sides as the cylinder leg mounting interface and structural reinforcement of the upper-mounted equipment.

[0108] As shown in Figure 11 , the chassis lower reinforcement plate 44 is arranged at the bottom end of the connection between the rear of the chassis frame body 1 and the frame tail beam 4, the chassis upper reinforcement plate 45 is arranged at the top end of the connection, and the reinforcement bent plate 46 is arranged on both sides of the connection to ensure the connection firmness of the frame tail beam. The connection mode is welded.

[0109] The five-bridge cross beam 26 is provided with suspension system interfaces on both sides, and a frame turnover oil cylinder seat 5 is provided in front.

[0110] When the upper equipment is turned over, the frame turnover oil cylinder seat 5 tends to move in the front-back direction and downward. The first turnover oil cylinder seat reinforcing beam 53 is arranged in front of the frame turnover oil cylinder seat to limit the forward movement of the frame turnover oil cylinder seat 5, and the second turnover oil cylinder seat reinforcing beam 54 is arranged behind the frame turnover oil cylinder seat to limit the rearward movement of the frame turnover oil cylinder seat 5.

[0111] The bottom of the frame turnover oil cylinder seat 5 is connected to the left and right longitudinal beams of the frame through a reinforcing plate, so that when the left and right longitudinal beams of the frame are twisted, the frame turnover oil cylinder seat 5 is maintained in the initial position. The five-bridge cross beam is provided with a space for avoiding the turnover oil cylinder of the upper equipment.

[0112] As a typical embodiment, the left and right longitudinal beam mounting plates are inserted into the frame tail beam 4 structure and welded to the front end mounting plate of the frame tail beam 4, and the center of the frame tail beam 4 is provided with a weight-reducing mounting hole.

[0113] The frame tail beam and the longitudinal beam are connected by insertion, and when the upper equipment is turned over, the frame tail beam tends to move in the front-back direction and upward and downward. The left and right longitudinal beams are inserted into the tail beam body to limit the displacement of the tail beam when the upper equipment is turned over.

[0114] The left and right sides of the tail beam can be provided with mounting spaces for the oil cylinder legs of the upper equipment, so that when the upper equipment is used, the oil cylinder legs can lift the whole vehicle off the ground.

[0115] The cross beam is provided with suspension system oil gas spring and suspension swing arm mounting interfaces, steering rod system through holes and steering swing arm reinforcing beams, and the steering rod system through holes and the suspension system and the frame cross beam are placed between the turnover oil cylinder seat and the tail beam. The whole structure is suitable for special vehicles with rear axle steering and independent suspension.

[0116] As Figure 12As shown, the left frame rail 14 and the right frame rail 11 are connected to the tail beam 4 in a variable cross-section structure with the front being higher and the rear being lower, specifically, the lower surface is a flat surface, and the upper surface has a decreasing height, and the height difference is marked as H to avoid the installation space of the upper equipment.

[0117] The vertical plate and the bent plate of the tail beam rear rotary lug 42 arranged on the tail beam 4 are inserted into the tail beam 4 and welded with the tail beam 4.

[0118] The tail beam 4 is internally provided with a web plate welded with the upper plate and the lower plate of the tail beam.

[0119] The frame body is provided with a suspension swing arm reinforcing beam and a steering bridge reinforcing beam, and the left frame rail 14 and the right frame rail 11 between the upper equipment frame turnover oil cylinder seat 5 and the tail beam 4 of the upper equipment frame are reserved with a steering swing arm and a steering pull rod movement space.

[0120] The frame body 1 directly manufactures an upper equipment interface, so that the upper equipment is directly connected with the frame body, and a reinforcing frame structure for overcoming the influence of frame torsion on the connection between the frame and the upper equipment is no longer needed, the sub-frame structure is cancelled, the vehicle mass center position and the vehicle weight are effectively reduced, and the service life of the vehicle is improved.

[0121] Further, the second support 32 and the third support 33 are provided with rubber limiting blocks to limit the maximum deflection stroke when the upper equipment is twisted left and right, so as to ensure the stability of the upper equipment and the driving safety of the vehicle.

[0122] Further, the upper equipment is arranged with a connection beam corresponding to each support, i.e., the upper equipment connection frame structure is connected with the first support 31, the second support 32, the third support 33, the fourth support 34, the fifth support 35 using a pin shaft, and is connected with the sixth support 36 using a bolt.

[0123] Further, the upper equipment frame turnover oil cylinder seat 5 is arranged at the internal bottom plate position of the frame rail, in front of the integrated design special frame tail beam 4, so that the turnover oil cylinder seat and the rotary center point position can be reasonably arranged without using a sub-frame, the gravity center of the upper equipment is lowered, the driving safety is ensured, further, the tail beam is designed to be integrated with the frame rail, and the requirements of the oil cylinder supporting leg support during the operation of the upper equipment and the bearing requirement during the turnover of the upper equipment are considered. Figure 12 H is the installation height of the center of the upper equipment which can be lowered.

[0124] Further, the left and right frame rails are provided with upper equipment turnover oil cylinder pin shaft installation and dismounting process holes, which facilitate the installation and dismounting of the upper equipment turnover oil cylinder pin shaft.

[0125] Further, the oil cylinder support legs and the rear overturning tail beam structure are designed in an integrated manner, so that the auxiliary frame and other mounting components can be cancelled, the vehicle frame body bears various loads during overturning of the upper equipment, and the overall weight is reduced.

[0126] Further, the overturning oil cylinder support is arranged below the vehicle frame longitudinal beam, so that the stroke of the upper equipment overturning oil cylinder is shortened, and the rear end of the vehicle frame is provided in a variable cross-section shape, so that a larger mounting space for the upper equipment overturning structure is provided.

[0127] Further, the present application provides a large-section vehicle frame structure, so that the main reducer of the vehicle is installed between the left longitudinal beam 14 and the right longitudinal beam 11 of the vehicle frame body 1, the main reducer is integrated with the vehicle frame longitudinal beam, and the stress on the frame of the independent suspension vehicle is effectively improved.

[0128] Embodiment 2: A vehicle

[0129] As shown in Figures 14-16 A vehicle, comprising the integrated vehicle frame with floating support of embodiment 1 and the upper equipment 6 arranged on the vehicle frame body 1, wherein the upper equipment 6 comprises an upper equipment connecting frame structure 61 and an upper equipment body 62, which are independent of each other, and the upper equipment body 62 is placed inside the upper equipment connecting frame structure 61 when the upper equipment body 62 is not overturned, the upper equipment connecting frame structure 61 plays a role of mounting, placing, supporting and protecting, and a detection device can be arranged inside the upper equipment connecting frame structure 61 to detect the state of the upper equipment body 62. 101 in the figure is a cab mounting space.

[0130] The bottom of the upper equipment connecting frame structure 61 is provided with a plurality of upper equipment connecting members, such as Figure 15As shown, including the first connecting piece 611, the second connecting piece 612, the third connecting piece 613, the fourth connecting piece 614, the fifth connecting piece 615, the sixth connecting piece 616, wherein the first connecting piece 611, the second connecting piece 612, the third connecting piece 613, the fourth connecting piece 614 are provided with concentric hinge holes with longitudinal axis, and the hinge hole position of the first connecting piece 611 corresponds to the first mounting hole of the first support 31, the hinge hole position of the second connecting piece 612 corresponds to the second mounting hole of the second support 32, the hinge hole position of the third connecting piece 613 corresponds to the third mounting hole of the third support 33, and the hinge hole position of the fourth connecting piece 614 corresponds to the fourth mounting hole of the fourth support 34, which are connected by pin shafts, the fifth connecting piece 615 is located on both sides of the upper equipment connecting frame structure 61 bottom surface along the side wall of the upper equipment connecting frame structure 61, which is provided with hinge holes with transverse axis, corresponding to the fifth mounting hole position of the upper end of the fifth support 35, and connected by pin shafts; the sixth connecting piece 616 is a box-shaped integral connecting plate, which is provided with a bolt connecting hole in the middle and connected to the sixth support 36 by bolts.

[0131] As shown in the figure, Figure 17 The upper equipment body 62 includes a body front part 621 and a body rear part 622, the body front part 621 is provided with a turnover oil cylinder 623 at the bottom, the body rear part 622 is provided with an upper equipment turnover seat 624 at the bottom, the upper equipment turnover seat 624 is hinged to the tail beam rear turning lug 42 of the tail beam 4, serving as the turnover center of the upper equipment body 62; the other end of the turnover oil cylinder 623 is hinged to the frame turnover oil cylinder seat 5 in front of the tail beam 4. The upper surface of the body rear part 622 is flush with the upper surface of the body front part 621, and the lower surface of the body rear part 622 is lower than the lower surface of the body front part 621, which matches the variable cross-section shape at the tail beam and can provide more installation space for the upper equipment body turnover structure.

[0132] Working principle:

[0133] As shown in the figure, Figure 22 Suppose the height of the frame between the upper plane 102 and the lower plane 103 is 700mm, and the position of the chassis gravity center is 105; if the integrated design is not adopted, the turnover oil cylinder support and the tail beam position are simultaneously lifted by 700mm, and the upper equipment gravity center position is 104, which makes the vehicle upper equipment gravity center overall lifted by 700mm, resulting in the overall vehicle gravity center being high (the overall vehicle gravity center position is 106). When the non-integrated design is used, the upper equipment is above the entire frame upper plane, and the front high and rear low type upper equipment turnover device cannot utilize the space at the front end of the upper equipment, and the overall vehicle gravity center is high. The vehicle is prone to rollover when driving off-road and high-speed turning.

[0134] As shown in the figure, Figure 23As shown, the integrated structure provided by the application can be widely used in the upper equipment with turnover function of multi-axle special vehicle. Compared with the non-integrated design, the gravity center can be lowered by about 500mm, which is related to the size of the variable cross-section shape of the upper equipment body. The height of the avoidance space of the vehicle frame is 300mm, so the gravity center of the upper equipment can be lowered by 300mm under the condition of avoiding interference. Figure 12 and Figure 23 H) and is located at the last end of the vehicle frame, which can lower the overall vehicle height and gravity center height. When the integrated design is adopted, the upper equipment turnover cylinder support is integrated with the inner longitudinal beam of the vehicle frame, which lowers the height of the upper equipment gravity center position and lowers the overall vehicle gravity center, thereby ensuring the stability of the vehicle on off-road surfaces and during high-speed turning.

[0135] As shown in Figure 13 , four left and right rotatable supports are adopted to release stress during left and right torsion working conditions. A front and rear rotatable support is adopted to release stress during front and rear torsion. A rigid support is adopted to ensure the safety of the upper equipment during emergency braking or rapid acceleration, so that the upper equipment will not have obvious displacement or impact from the vehicle body to the front or rear.

[0136] The first support, the second support, the third support and the fourth support have rotational freedom in the left and right directions and displacement limitation (small displacement can be achieved through pin shafts and pin shaft ears) in the front and rear directions, which are arranged above the center of the vehicle frame and coincide with the center line of the vehicle frame. The fifth support has freedom in the front and rear directions and displacement limitation (small displacement can be achieved through pin shafts and pin shaft ears) in the left and right directions, which is arranged on the outer side of the vehicle frame close to the outermost position of the vehicle body. The sixth support is arranged at the rear end of the upper equipment and is a fixed constraint without freedom. The entire upper equipment has rotational freedom in the left and right directions, freedom in the front and rear directions, and finally rigid constraint.

[0137] When moving in the left and right directions, in addition to the second support and the third support being provided with rubber limiting blocks to limit the turnover angle, the left and right pin shafts of the fifth support have a small amount of movement, so that the left and right displacement amount of the entire upper equipment gradually decreases from front to rear. The sixth support is a rigid constraint, so that the tail of the upper equipment will not rotate and displace. When moving in the front and rear directions, the first, second, third and fourth pin shafts can have a small amount of movement to limit the front and rear turnover amount of the upper equipment, and the sixth support is a rigid constraint, so that the tail of the upper equipment will not rotate and displace.

[0138] The vehicle frame body 1 directly manufactures the upper equipment interface, eliminating the sub-frame structure, effectively lowering the overall vehicle gravity center position and the overall vehicle weight.

[0139] When the vehicle travels on off-road terrain, the long length of the chassis body causes partial or overall torsion. The superstructure, connected to the chassis frame via a floating support structure, has multiple degrees of freedom, allowing for relative movement. Specifically, the superstructure connecting frame structure 61 is connected to the first support 31, the second support 32, the third support 33, and the fourth support 34 via pins, enabling left and right rotational movement. Simultaneously, gaps are maintained in the superstructure connecting parts of the superstructure connecting frame structure 61 with the first support 31, the second support 32, the third support 33, and the fourth support 34 in the front-rear direction, allowing for front-rear translational movement. The superstructure connecting frame structure 61 is connected to the fifth support 35 via left and right pin mounting holes, enabling front-rear rotational movement. Simultaneously, gaps are maintained in the superstructure connecting frame structure 61 with the fifth support 35 in the left and right directions, allowing for left-rear translational movement. This releases the torsional stress and effects from the chassis, preventing damage to the chassis frame and superstructure.

[0140] The upper equipment connecting frame structure 61 is bolted to the sixth support 36 to restrict the front-to-back displacement of the tail of the upper equipment.

[0141] Example 3: A vehicle

[0142] This includes the integrated frame with floating supports provided in Example 1. For example... Figure 1 As shown, the provided vehicle has a total of five axles, with four axles being drive and the fifth axle being non-drive. Axles one through five are used for steering. The main reducer is installed on the crossbeams of the first axle (21), the second axle (22), the third axle (24), and the fourth axle (25). There is no main reducer installed on the fifth axle (26).

[0143] The vehicle main reducer 100 is installed between the left longitudinal beam 14 and the right longitudinal beam 11 of the frame body 1, eliminating the cantilevered main reducer mounting structure caused by the small cross-section frame and improving the stress condition of the frame body 1.

[0144] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. An integrated frame with floating support, comprising a frame body, the frame body comprising a left frame longitudinal beam and a right frame longitudinal beam; and a plurality of cross beams arranged between the left frame longitudinal beam and the right frame longitudinal beam; further comprising left and right rotating supports, front and rear rotating supports, and rigid supports arranged on the frame body for connecting the frame body and the superstructure; the left and right rotating supports are located in front of or behind the front and rear rotating supports, and the rigid supports are located at the rear of the frame body; the left and right rotating supports comprise a first support, the cross beams comprise a bridge cross beam, and the first support is arranged on the bridge cross beam; the first support comprises a first support fixing seat, two first support hinge seats arranged in parallel with the first cross beam and fixed to the first support fixing seat, and a first mounting hole arranged at the middle position of the two first support hinge seats; the front and rear rotating supports are fifth supports, the fifth supports are fixedly connected with the frame body, the upper portions of the fifth supports extend to the outside of the frame longitudinal beams, and the top ends of the fifth supports are respectively provided with a fifth support mounting lug, and the fifth support mounting lugs are provided with a fifth mounting hole which is concentric and has a horizontal shaft; the rigid supports are sixth supports, the cross beams comprise four bridge cross beams, the four bridge cross beams comprise a four-bridge cross beam bottom plate, a four-bridge cross beam front vertical plate, a four-bridge cross beam right vertical plate, a four-bridge cross beam upper plate, a four-bridge cross beam left vertical plate, and a four-bridge cross beam rear vertical plate, which are connected with each other to form the main structure of the four-bridge cross beam, and the four-bridge cross beam upper plate is the sixth support and has bolt holes for connecting with the superstructure. the left and right rotating supports comprise a second support, the cross beams comprise a two-bridge cross beam, and the second support is arranged on the two-bridge cross beam; the second support comprises a second support bottom plate, a second support front vertical plate, a second support upper plate, and a second support rear vertical plate which are fixedly connected to form the main structure of the second support; the second support is provided with a second mounting hole in the front and rear direction at the middle position of the second support, and the second mounting hole is concentric with the first mounting hole on the first support. characterized in that the left and right rotating supports comprise a third support, the third support is provided with a third mounting hole in the front and rear direction at the middle position of the third support, and the third mounting hole is concentric with the first mounting hole on the first support; the third support is fixed to the frame through a third support mounting support. the left and right rotating supports comprise a fourth support, the cross beams comprise a three-bridge front cross beam, and the fourth support is arranged on the three-bridge front cross beam; the fourth support is provided with a fourth mounting hole in the front and rear direction at the middle position of the upper portion of the fourth support, and the fourth mounting hole is concentric with the first mounting hole on the first support. ​ ​ ​ 2. The one-piece vehicle frame with floating support of claim 1, wherein, ​ 3. The one-piece vehicle frame with floating support of claim 1, wherein, ​ ​ 4. The one-piece vehicle frame with floating support of claim 1, wherein, ​ 5. The one-piece vehicle frame with floating support of claim 1, wherein, The tail of the frame body is fixedly connected with a frame tail beam, which comprises a tail beam body perpendicular to the frame body and four tail beam rear rotary lugs fixedly welded with the tail beam body, and a concentric hinge hole with a horizontal shaft is arranged on the tail beam rear rotary lugs for rotatably arranging the upper equipment; A five-bridge transverse beam is arranged in front of the frame tail beam, and a frame turnover cylinder seat is arranged in front of the five-bridge transverse beam.

6. The unibody vehicle frame having a floating support of claim 5, wherein, The left and right longitudinal beams of the frame are connected with the frame tail beam in a variable cross-section structure with the front being higher and the rear being lower.

7. A vehicle characterized by comprising: The application relates to an integrated frame with floating support and upper equipment arranged on the frame body, wherein the integrated frame with floating support comprises a frame body and a frame support, and the upper equipment comprises an upper equipment connecting frame structure and an upper equipment body. The bottom of the upper equipment connecting frame structure is provided with a plurality of upper equipment connecting pieces, including a first connecting piece, a second connecting piece, a third connecting piece, a fourth connecting piece, a fifth connecting piece and a sixth connecting piece, wherein the first connecting piece, the second connecting piece, the third connecting piece and the fourth connecting piece are respectively provided with concentric hinge holes with a longitudinal shaft, and the hinge hole positions of the first connecting piece, the second connecting piece, the third connecting piece and the fourth connecting piece correspond to the first mounting hole of the first support, the second mounting hole of the second support, the third mounting hole of the third support and the fourth mounting hole of the fourth support respectively, and the hinge holes are connected through a pin shaft; the fifth connecting piece is located on both sides of the bottom surface of the upper equipment connecting frame structure and is arranged along the side wall of the upper equipment connecting frame structure, and the fifth connecting piece is provided with a concentric hinge hole with a horizontal shaft and corresponds to the fifth mounting hole position at the upper end of the fifth support through a pin shaft. The upper equipment body comprises a body front part and a body rear part, the turnover cylinder is hingedly arranged at the bottom of the body front part, the upper equipment turnover seat is arranged at the bottom of the body rear part, the upper equipment turnover seat is hingedly connected with the tail beam rear rotary lug of the frame tail beam as the turnover center of the upper equipment body, and the other end of the turnover cylinder is hingedly connected with the frame turnover cylinder seat in front of the frame tail beam.

Images