Novel air suspension and axle assembly

Abstract

The utility model provides a novel air suspension and axle assembly which comprises a suspension assembly, a front axle assembly, a middle axle assembly and a rear axle assembly, the front axle assembly is used as a steering axle of a tractor to enable the vehicle to steer, and the middle axle assembly and the rear axle assembly provide assistance for the tractor to enable the vehicle to steer. The suspension assembly is used for damping and buffering of the tractor, or the rear axle assembly serves as a bearing axle of the tractor, and the bearing axle is used for bearing of the tractor. According to the novel air suspension and axle assembly, in the aspects of integration and light weight of the axle housing and integration and light weight of the bearing axle, a traditional welding axle housing and a traditional bearing axle housing are replaced by an integrally-cast axle housing, all parts are integrated on the axle, the cost of the suspension is reduced, the assembly process is simplified, and the stability of a suspension system is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle chassis, in particular to a novel air suspension and axle assembly. Background Art

[0002] For common suspensions of vehicle chassis, leaf springs or air springs are used as elastic elements to connect the axle and the vehicle frame to achieve functions such as buffering, shock absorption, support and force transmission. The air suspension controls an air compressor and an exhaust valve to automatically compress or extend the spring, thereby reducing or increasing the ground clearance of the chassis, increasing the stability of the vehicle body at high speeds, improving the passability on complex road conditions, enhancing the driving comfort, and reducing the vibration impact of the vehicle.

[0003] Currently, most air suspensions are paired with 6×4 and 6×2 tractors. Among them, the 6×2 tractor usually has three axles, with 2 front wheels as steering wheels, and two wheel groups (which may be two single wheels or a pair of dual wheels) in the rear axle as drive wheels. Other wheels or wheel groups may only be used as load-bearing wheels without steering or driving functions; the 6×4 tractor is a three-axle vehicle, with 2 front wheels as steering wheels, and the rear two axles (two wheels per axle, a total of 4 wheels) are both drive wheels. The suspension adopts a V-shaped thrust rod suspension, a trapezoidal thrust rod suspension, or an X-shaped thrust rod suspension. However, the above suspension structure has more air suspension components, a complex assembly process, and a relatively high risk of air suspension system failure, resulting in relatively low stability of the suspension system. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a novel air suspension and axle assembly to reduce the suspension cost, simplify the assembly process, and improve the stability of the suspension system.

[0005] The utility model provides a novel air suspension and axle assembly, including: the suspension assembly, the front axle assembly, the middle axle assembly, and the rear axle assembly. The front axle assembly is used as the steering axle of the tractor to enable the vehicle to turn. The middle axle assembly and the rear axle assembly provide assistance for the tractor. The suspension assembly is used for the shock absorption and buffering of the tractor, or the rear axle assembly is used as the load-bearing axle of the tractor, and the load-bearing axle is used for the load-bearing of the tractor.

[0006] As a further optimized solution, the middle axle assembly includes an integrally cast middle axle housing body. Wheels are installed at both ends of the integrally cast middle axle housing body. Two air springs are installed on one side of the integrally cast middle axle housing body. Two front brackets are installed on the other side of the integrally cast middle axle housing body. A shock absorber is installed on the upper part of the front bracket. A reducer is installed at the center of the integrally cast middle axle housing body.

[0007] As a further optimization solution, the integral casting middle axle housing body includes a middle section of the body. At the front and rear parts of both ends of the middle section of the body, a first front equalizing beam and a first rear equalizing beam are integrally formed and cast respectively. At the rear part of the middle section of the body, a bridge housing is integrally cast with a fillet transition connection. At both ends of the middle section of the body, a first half axle casing is integrally cast with a fillet transition connection through a first brake flange. At the top of the middle section of the body, a first integrated middle push support is cast. A first integrated middle push support is installed at the top of the middle section of the body. The integral casting middle axle housing body is connected to the suspension assembly through the integrated middle push support. The first integrated middle push support is a split type and is connected to the integral casting middle axle housing body through bolts.

[0008] As a further optimization solution, the suspension assembly includes a vehicle frame, a lateral balance link and a thrust rod. The lateral balance link is installed on the vehicle frame. There are two thrust rods, and each is installed on both sides of the lateral balance link.

[0009] As a further optimization solution, the thrust rod is a non-thrust rod or a V-shaped thrust rod or a trapezoidal thrust rod or an X-shaped thrust rod or a side thrust rod.

[0010] As a further optimization solution, the first integrated middle push support is a non-middle push support or a first V-shaped middle push support or a first trapezoidal middle push support or a first X-shaped middle push support or a first side push middle push support. The first V-shaped middle push support or the first trapezoidal middle push support or the first X-shaped middle push support or the first side push middle push support is respectively connected to a non-thrust rod or a V-shaped thrust rod or a trapezoidal thrust rod or an X-shaped thrust rod or a side thrust rod.

[0011] As a further optimization solution, the load-carrying axle includes a load-carrying axle housing body. At the front and rear parts of both ends of the load-carrying axle housing body, a second front equalizing beam and a second rear equalizing beam are integrally formed and cast respectively. At both ends of the load-carrying axle housing body, a second half axle casing is integrally cast with a fillet transition connection through a second brake flange. At the top of the load-carrying axle housing body, a second integrated middle push support is cast. The second integrated middle push support is a split type and is connected to the integral casting load-carrying axle housing body through bolts.

[0012] As a further optimization solution, the second integrated middle push support is a non-middle push support or a second V-shaped middle push support or a second trapezoidal middle push support or a second X-shaped middle push support or a second side push middle push support. The second V-shaped middle push support or the second trapezoidal middle push support or the second X-shaped middle push support or the second side push middle push support is respectively connected to a non-thrust rod or a V-shaped thrust rod or a trapezoidal thrust rod or an X-shaped thrust rod or a side thrust rod.

[0013] As a further optimization solution, both the first front equalizing beam and the first rear equalizing beam can be divided into two equalizing beam trajectory structures: an arc-shaped equalizing beam structure and a Z-shaped equalizing beam structure, and the cross-section can be divided into door-shaped, mountain-shaped, T-shaped, mouth-shaped, or I-shaped.

[0014] As a further optimization solution, both the second front equalizing beam and the second rear equalizing beam can be divided into two equalizing beam trajectory structures: an arc-shaped equalizing beam structure and a Z-shaped equalizing beam structure, and the cross-section can be divided into door-shaped, mountain-shaped, T-shaped, mouth-shaped, or I-shaped.

[0015] The present utility model provides a new type of air suspension and axle assembly through improvement. Compared with the prior art, it has the following improvements and advantages: This new type of air suspension and axle assembly, in terms of the integration and lightweight of the axle housing, and the integration and lightweight of the load-bearing axle, replaces the traditional welded axle housing and load-bearing axle housing with an integrally cast axle housing, and also integrates all parts on the axle, reducing the suspension cost, simplifying the assembly process, and improving the stability of the suspension system. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the specific embodiments of the present utility model or the technical solutions in the prior art, the following will briefly introduce the drawings required to be used in the description of the specific embodiments or the prior art. Obviously, the following drawings are some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0017] Figure 1 It is a schematic structural diagram of the tractor of the present utility model;

[0018] Figure 2 It is a schematic diagram of the axle assembly of this structure;

[0019] Figure 3 It is a schematic structural diagram of the middle axle assembly of the present utility model paired with a non-thrust suspension;

[0020] Figure 4 It is a schematic structural diagram of the middle axle assembly of the present utility model;

[0021] Figure 5 It is a schematic structural diagram of the middle axle housing body of the present utility model;

[0022] Figure 6 It is a schematic structural diagram of the middle axle assembly of the present utility model paired with a first V-shaped thrust suspension;

[0023] Figure 7 It is a schematic structural diagram of the middle axle assembly of the present utility model installed with a first V-shaped integrated middle thrust bracket;

[0024] Figure 8Schematic diagram of the structure for installing the first V-shaped integrated middle thrust support on the integral casting middle axle housing body of the present utility model;

[0025] Figure 9 Schematic diagram of the structure of the middle axle assembly of the present utility model in combination with the first trapezoidal thrust suspension;

[0026] Figure 10 Schematic diagram of the structure for installing the first trapezoidal integrated middle thrust support on the middle axle housing body of the present utility model;

[0027] Figure 11 Schematic diagram of the structure for installing the first trapezoidal integrated middle thrust support on the integral casting middle axle housing body of the present utility model;

[0028] Figure 12 Schematic diagram of the structure of the middle axle assembly of the present utility model in combination with the first X-shaped thrust suspension;

[0029] Figure 13 Schematic diagram of the structure for installing the first X-shaped integrated middle thrust support on the middle axle assembly of the present utility model;

[0030] Figure 14 Schematic diagram of the structure for installing the first X-shaped integrated middle thrust support on the middle axle housing body of the present utility model;

[0031] Figure 15 Schematic diagram of the structure of the middle axle assembly of the present utility model in combination with the first side-thrust integrated middle thrust support suspension;

[0032] Figure 16 Schematic diagram of the structure for installing the first side-thrust thrust suspension on the middle axle assembly of the present utility model;

[0033] Figure 17 Schematic diagram of the structure of the middle axle assembly of the present utility model in combination with the first side-thrust thrust suspension;

[0034] Figure 18 Schematic diagram of the structure for installing the load-carrying axle on the vehicle frame of the present utility model.

[0035] Figure 19 Schematic diagram of the structure of the load-carrying axle of the present utility model in combination with a non-thrust suspension;

[0036] Figure 20 Schematic diagram of the structure of the load-carrying axle assembly of the present utility model;

[0037] Figure 21 Schematic diagram of the structure of the load-carrying axle housing of the present utility model;

[0038] Figure 22 Schematic diagram of the structure of the load-carrying axle of the present utility model in combination with the second V-shaped thrust suspension;

[0039] Figure 23Schematic diagram of the structure of the load-carrying bridge assembly of the present utility model in combination with the second V-shaped thrust suspension;

[0040] Figure 24 Schematic diagram of the structure of the load-carrying bridge of the present utility model for installing the second V-shaped integrated middle thrust bracket;

[0041] Figure 25 Schematic diagram of the structure of the load-carrying bridge of the present utility model in combination with the second trapezoidal thrust suspension;

[0042] Figure 26 Schematic diagram of the structure of the load-carrying bridge assembly of the present utility model in combination with the second trapezoidal thrust suspension;

[0043] Figure 27 Schematic diagram of the structure of the load-carrying bridge of the present utility model for installing the second trapezoidal integrated middle thrust bracket;

[0044] Figure 28 Schematic diagram of the structure of the load-carrying bridge of the present utility model in combination with the second X-shaped thrust suspension;

[0045] Figure 29 Schematic diagram of the structure of the load-carrying bridge assembly of the present utility model in combination with the second X-shaped thrust suspension;

[0046] Figure 30 Schematic diagram of the structure of the load-carrying bridge of the present utility model for installing the second X-shaped integrated middle thrust bracket;

[0047] Figure 31 Schematic diagram of the structure of the load-carrying bridge of the present utility model in combination with the second side thrust suspension;

[0048] Figure 32 Schematic diagram of the structure of the load-carrying bridge assembly of the present utility model in combination with the second side thrust suspension;

[0049] Figure 33 Schematic diagram of the structure of the load-carrying bridge assembly of the present utility model in combination with the second side thrust suspension;

[0050] Figure 34 Schematic diagram of the cross-sections of the first front equalizing beam and the first rear equalizing beam of the present utility model;

[0051] Figure 35 Schematic diagram of the cross-sections of the second front equalizing beam and the second rear equalizing beam of the present utility model.

[0052] Explanation of reference numerals:

[0053] 1 - Tractor, 11 - Suspension assembly, 111 - Frame, 112 - Thrust rod, 1121 - V-shaped thrust rod, 1122 - Trapezoidal thrust rod, 1123 - X-shaped thrust rod, 1124 - Side thrust rod, 113 - Lateral balance link, 12 - Front axle assembly, 13 - Middle axle assembly, 131 - Integrally cast middle axle housing body, 1311 - Middle section of the body, 1312 - First integrated middle thrust support, 13121 - First V-shaped middle thrust support, 13122 - First trapezoidal middle thrust support, 13123 - First X-shaped middle thrust support, 13124 - First trapezoidal middle thrust support, 1313 - First rear equalizing beam, 1314 - First front equalizing beam, 1315 - Axle housing, 1316 - First brake flange, 1317 - First half axle casing, 132 - Wheel hub, 133 - Air spring, 134 - Shock absorber, 135 - Reducer, 136 - Front support, 14 - Rear axle assembly, 15 - Load-carrying axle, 151 - Load-carrying axle housing body, 152 - Second front equalizing beam, 153 - Second rear equalizing beam, 154 - Second brake flange, 155 - Second half axle casing, 156 - Second integrated middle thrust support, 1561 - Second V-shaped middle thrust support, 1562 - Second trapezoidal middle thrust support, 1563 - Second X-shaped middle thrust support, 1564 - Second side thrust middle thrust support. Detailed implementation manners

[0054] The technical solutions of the present utility model will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0055] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model.

[0056] In the description of the present utility model, it should be understood that the terms "first" and "second" are only used for descriptive purposes, and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, "multiple" means two or more, unless otherwise clearly and specifically defined. In addition, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0057] See also Figures 1-35 The utility model provides a technical solution: a new type of air suspension and axle assembly, including: a suspension component 11, a front axle component 12, a middle axle component 13, and a rear axle component 14. The front axle component 12 is used as a steering axle of a tractor 1 to enable the vehicle to steer. The middle axle component 13 and the rear axle component 14 provide power for the tractor 1. The suspension component 11 is used for shock absorption and buffering of the tractor 1, or the rear axle component 14 is used as a load-bearing bridge 15 of the tractor 1, and the load-bearing bridge 15 is used to bear the load of the tractor 1.

[0058] A complete vehicle axle is formed for the rear of the tractor 1 by means of the suspension assembly 11, the front axle assembly 12, the middle axle assembly 13, the rear axle assembly 14 or the load-bearing axle 15. The integration of the parts in the middle axle assembly 13 cooperates with the various forms of the suspension assembly 11, can adapt to the installation of various suspensions, and the overall vehicle axle can be installed in a multi-state lightweight manner.

[0059] In some embodiments, the mid-bridge assembly 13 includes an integrally cast mid-bridge housing body 131, wheel hubs 132 are installed at both ends of the integrally cast mid-bridge housing body 131, two air springs 133 are installed on one side of the integrally cast mid-bridge housing body 131, two front brackets 136 are installed on the other side of the integrally cast mid-bridge housing body 131, shock absorbers 134 are installed on the upper part of the front brackets 136, and a reducer 135 is installed at the center of the integrally cast mid-bridge housing body 131.

[0060] The integral cast middle bridge housing body 131 is an integration of the middle bridge assembly 13 and is a drive axle. The front bracket 136 is a medium for connecting the cast bridge housing body 131 with the frame 1. The shock absorber 134 has a buffering ability to reduce the vibration of the suspension caused by the road surface. The air control reducer 135 generates a deceleration on the wheel hub 132. The air spring 133 reduces the vibration generated by the bridge housing body 131. The integration of the above structures integrates the bridge housing.

[0061] In some embodiments, the integral casting middle axle housing body 131 includes a middle section 1311 of the body. At the front and rear of both ends of the middle section 1311 of the body, a first front equalizing beam 1314 and a first rear equalizing beam 1313 are integrally formed and cast respectively. At the rear of the middle section 1311 of the body, a bridge housing 1315 is cast with a fillet for transition connection. At both ends of the middle section 1311 of the body, a half-axle sleeve 1317 is integrally cast with a fillet through a brake flange 1316. An integrated middle push support 1312 is cast on the top of the middle section 1311 of the body, and a first integrated middle push support 1312 is installed on the top of the middle section 1311 of the body. The integral casting middle axle housing body 131 is connected to the suspension assembly 11 through the integrated middle push support 1312.

[0062] On the lower side of the cross-section on both sides of the middle section 1311 of the body, there are a first front equalizing beam 1314 and a second rear equalizing beam 1313. One side of the first front equalizing beam 1314 extends from the front side of the middle section 1311 of the body, and its trajectory is an arc-shaped trajectory. At the end position, there is a front support connection boss, and the shape of the front support connection boss is cylindrical. The first rear equalizing beam 1313 extends backward from the square cross-sections on both sides of the middle section 1311 of the body. At the end position, there is an air spring 133 installation disk surface, and the air spring installation disk surface is circular or semi-circular in structure. The connection position between the air spring installation disk surface and the second rear equalizing beam 1313 is connected with a fillet for transition. The above is matched with the axle housing body 131 of different push rod and non-push rod suspension structures. The brake flange 1316 is circular and wing-shaped, and is respectively matched with the wheel end of drum brake and the wheel end of disc brake. The middle section 1311 of the body is the main body of the integral casting middle axle housing body 131. The first front equalizing beam 1314 is used for the installation of the front support 136, the first rear equalizing beam 1313 is used for the installation of the air spring 133, and other equipment such as a braking system is installed inside the bridge housing 1315. The integrated middle push support 1312 is the medium for connecting the integral casting middle axle housing body 131 and the suspension assembly 11.

[0063] In some embodiments, the suspension assembly 11 includes a vehicle frame 111, a lateral balance link 113, and a push rod 112. The lateral balance link 113 is installed on the vehicle frame 111. There are two push rods 112, and each is installed on both sides of the lateral balance link 113.

[0064] The vehicle frame 111 is a carrier for installing an axle at the rear of a tractor. The lateral balance bar 113 is used for the installation of the push rod 112, and different state suspensions of the push rod 112 can be installed on the vehicle frame 111.

[0065] In some embodiments, the push rod 112 is a non-push rod or a V-shaped push rod 1121 or a trapezoidal push rod 1122 or an X-shaped push rod 1123 or a side push rod 1124.

[0066] The suspension without a thrust rod or a V-shaped thrust rod 1121 or a trapezoidal thrust rod 1122 or an X-shaped thrust rod 1123 or a side thrust rod 1124 can form five states.

[0067] In some embodiments, the first integrated middle thrust bracket 1312 is a middle thrust bracket without a middle thrust or a first V-shaped middle thrust bracket 13121 or a first trapezoidal middle thrust bracket 13122 or a first X-shaped middle thrust bracket 13123 or a first side thrust middle thrust bracket 13124. The first V-shaped middle thrust bracket 13121 or the first trapezoidal middle thrust bracket 13122 or the first X-shaped middle thrust bracket 13123 or the first side thrust middle thrust bracket 13124 is respectively connected to the suspension without a thrust rod or a V-shaped thrust rod 1121 or a trapezoidal thrust rod 1122 or an X-shaped thrust rod 1123 or a side thrust rod 1124.

[0068] The frame 111 extends in the longitudinal direction of the tractor 1 and stops at a specified position. A transverse balance link 113 is provided at the middle position of the frame 111. The two ends of the transverse balance link 113 are connected. The V-shaped thrust rod 1121 is in a V shape, and the other end of the V-shaped thrust rod 1121 is connected to the first V-shaped middle thrust bracket 13121 of the axle housing body 131. The bottom position is connected to the air spring 133 by the first rear equalizing beams 1313 on the left and right sides at the rear of the axle housing body 131. The other end of the air spring 133 is connected to the frame 111. The front side of the axle housing body 131 is connected to the front bracket 136 by the first front equalizing beam 1314, and the other end of the front bracket 136 is welded to the frame 111 for the installation of the V-shaped suspension on the axle. The first X-shaped middle thrust bracket 13123 is in two continuous "concave" shapes and is vertically distributed on the upper side of the middle section 1311 of the body to connect the X-shaped thrust rod 1123. The connection position between the first X-shaped middle thrust bracket 13123 and the middle section 1311 of the body is transitionally connected with a fillet. The first X-shaped middle thrust bracket 13123 and the axle housing body 131 can be connected by bolts. By simply changing the first X-shaped middle thrust bracket 13123 with different shapes, different positions of the X-shaped thrust rod 1123 can be matched, so as to connect the suspension assembly 11 and the middle axle assembly 13 to adapt to the installation of the X-shaped state on the axle.

[0069] In some embodiments, the load-bearing axle 15 includes a load-bearing axle housing body 151. The front and rear parts at both ends of the load-bearing axle housing body 151 are integrally formed and cast with a second front equalizing beam 152 and a second rear equalizing beam 153 respectively. The two ends of the load-bearing axle housing body 151 are integrally cast with a second half-axle casing 155 through a fillet transition connection by the second brake flange 154. The second integrated middle thrust bracket 156 is cast on the top of the load-bearing axle housing body 151.

[0070] When reducing the body weight due to small transport tonnage, the rear axle assembly 14 can be replaced with a load-bearing axle 15. The load-bearing axle housing body 151 is the main body of the axle housing. The second front equalizing beam 152 and the second rear equalizing beam 153 are connected to the front bracket 136, and the second integrated middle push bracket 156 is connected to the thrust rod 112.

[0071] In some embodiments, the second integrated middle push bracket 156 is a non-middle push bracket or a second V-shaped middle push bracket 1561 or a second trapezoidal middle push bracket 1562 or a second X-shaped middle push bracket 1563 or a second side push middle push bracket 1564. The second V-shaped middle push bracket 1561 or the second trapezoidal middle push bracket 1562 or the second X-shaped middle push bracket 1563 or the second side push middle push bracket 1564 is respectively connected to a non-thrust rod or a V-shaped thrust rod 1121 or a trapezoidal thrust rod 1122 or an X-shaped thrust rod 1123 or a side push thrust rod 1124.

[0072] The second integrated middle push bracket 156 being a non-middle push bracket or a second V-shaped middle push bracket 1561 or a second trapezoidal middle push bracket 1562 or a second X-shaped middle push bracket 1563 or a second side push middle push bracket 1564 can be used for installing different suspensions. In the above structure of the integral middle axle housing body 131 and the load-bearing axle body 151, the two integrated middle push brackets can also be of a split structure and be connected by bolts, and different thrust rods 112 can be matched by replacing the middle push brackets.

[0073] In some embodiments, both the first front equalizing beam 1314 and the first rear equalizing beam 1313 can be divided into two equalizing beam track structures: an arc-shaped equalizing beam structure and a Z-shaped equalizing beam structure, and the cross-section can be divided into a door or mountain or T or mouth or I shape.

[0074] Its structure is that the cross-section of the equalizing beam is "door"-shaped and extends forward and backward to the square cross-sections on both sides of the middle section of the body, and its track extends in an arc-shaped track. The "mountain"-shaped equalizing beam cross-section is based on the "door"-shaped equalizing beam cross-section, and a reinforcing rib cross-section perpendicular to the upper plane is added at the middle position of the upper plane of the "door"-shaped equalizing beam. The "T"-shaped equalizing beam cross-section is obtained by removing the vertical surfaces on the sides of the beam from the "mountain"-shaped equalizing beam cross-section. The "mouth"-shaped equalizing beam cross-section is obtained by adding a lower plane to its "door"-shaped equalizing beam cross-section. The "I"-shaped equalizing beam cross-section is obtained by adding a lower plane at the lower side position to the "T"-shaped equalizing beam cross-section.

[0075] In some embodiments, both the second front equalizing beam 152 and the second rear equalizing beam 1153 can be divided into two equalizing beam track structures: an arc-shaped equalizing beam structure and a Z-shaped equalizing beam structure, and the cross-section can be divided into a door or mountain or T or mouth or I shape.

[0076] The "door"-shaped structure extends forward and backward along the cross-section on both sides of the middle section of the body. A reinforcing rib cross-section perpendicular to the upper plane is added at the middle position of the upper plane of the "door"-shaped equalizing beam. The "T"-shaped equalizing beam cross-section is obtained by removing the side facades from the "mountain"-shaped equalizing beam cross-section. The "mouth"-shaped equalizing beam cross-section is obtained by adding a lower plane to its "door"-shaped equalizing beam cross-section. The "I"-shaped equalizing beam cross-section is obtained by adding a lower plane at the lower side position to the "T"-shaped equalizing beam cross-section.

[0077] Working principle: In two cases of 6×4 and 6×2 tractors, two axle states of suspension assembly 11, front axle assembly 12, middle axle assembly 13, rear axle assembly 14 and suspension assembly 11, front axle assembly 12, middle axle assembly 13, and load-bearing axle 15 are adopted. When all parts are integrated on the integral cast middle axle housing body 131 in the middle axle assembly 13, through the integrated middle push support 1312, it can be installed and connected without thrust, with V-shaped thrust rods, trapezoidal thrust rods, X-shaped thrust rods, trapezoidal thrust rod suspensions, and side push thrusts to various different states of the suspension assembly 11.

[0078] Finally, it should be noted that: the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A new type of air suspension and axle assembly, characterized in that, Comprising: A suspension assembly (11), a front axle assembly (12), a middle axle assembly (13), and a rear axle assembly (14). The front axle assembly (12) is used as the steering axle of the tractor (1) to enable the vehicle to steer. The middle axle assembly (13) and the rear axle assembly (14) provide assistance to the tractor (1). The suspension assembly (11) is used for shock absorption and buffering of the tractor (1), or the rear axle assembly (14) serves as the load-bearing axle (15) of the tractor (1), and the load-bearing axle (15) is used for load-bearing of the tractor (1).

2. A novel air suspension and axle assembly according to claim 1, characterized in that, The middle axle assembly (13) includes an integrally cast middle axle housing body (131). Wheels (132) are installed at both ends of the integrally cast middle axle housing body (131). Two air springs (133) are installed on one side of the integrally cast middle axle housing body (131). Two front brackets (136) are installed on the other side of the integrally cast middle axle housing body (131). Shock absorbers (134) are installed on the upper parts of the front brackets (136). A speed reducer (135) is installed at the center of the integrally cast middle axle housing body (131).

3. A novel air suspension and axle assembly according to claim 2, characterized in that, The integrally cast middle axle housing body (131) includes a body middle section (1311). A first front equalizer beam (1314) and a first rear equalizer beam (1313) are integrally formed and cast at the front and rear parts of both ends of the body middle section (1311). A bridge housing (1315) is cast with a rounded corner transition at the rear part of the body middle section (1311). First half shaft sleeves (1317) are integrally cast with a rounded corner transition through first brake flanges (1316) at both ends of the body middle section (1311). A first integrated middle push bracket (1312) is installed at the top of the body middle section (1311). The integrally cast middle axle housing body (131) is connected to the suspension assembly (11) through the integrated middle push bracket (1312). The first integrated middle push bracket (1312) is of a split type and is connected to the integrally cast middle axle housing body (131) by bolts.

4. A novel air suspension and axle assembly according to claim 3, characterized in that, The suspension assembly (11) includes a vehicle frame (111), a lateral balance link (113), and thrust rods (112). The lateral balance link (113) is installed on the vehicle frame (111). There are two thrust rods (112), and each is installed on both sides of the lateral balance link (113).

5. A novel air suspension and axle assembly according to claim 4, wherein, The thrust rod (112) is a non-thrust rod or a V-shaped thrust rod (1121) or a trapezoidal thrust rod (1122) or an X-shaped thrust rod (1123) or a side-thrust rod (1124).

6. A novel air suspension and axle assembly according to claim 5, characterized in that, The first integrated middle push bracket (1312) is a non-middle push bracket or a first V-shaped middle push bracket (13121) or a first trapezoidal middle push bracket (13122) or a first X-shaped middle push bracket (13123) or a first side push middle push bracket (13124). The first V-shaped middle push bracket (13121) or the first trapezoidal middle push bracket (13122) or the first X-shaped middle push bracket (13123) or the first side push middle push bracket (13124) is respectively connected to a non-thrust rod or a V-shaped thrust rod (1121) or a trapezoidal thrust rod (1122) or an X-shaped thrust rod (1123) or a side push thrust rod (1124).

7. A novel air suspension and axle assembly according to claim 1, characterized in that, The carrier bridge (15) includes a carrier bridge housing body (151). At the front and rear parts of both ends of the carrier bridge housing body (151), a second front equalizing beam (152) and a second rear equalizing beam (153) are integrally formed by casting respectively. At both ends of the carrier bridge housing body (151), a second half shaft sleeve (155) is integrally cast through a fillet transition connection by a second brake flange (154). A second integrated middle push bracket (156) is installed on the top of the carrier bridge housing body (151). The second integrated middle push bracket (156) is of a split type and is connected to the integrally cast carrier bridge housing body (151) by bolts.

8. A novel air suspension and axle assembly according to claim 7, characterized in that, The second integrated middle push bracket (156) is a non-middle push bracket or a second V-shaped middle push bracket (1561) or a second trapezoidal middle push bracket (1562) or a second X-shaped middle push bracket (1563) or a second side push middle push bracket (1564). The second V-shaped middle push bracket (1561) or the second trapezoidal middle push bracket (1562) or the second X-shaped middle push bracket (1563) or the second side push middle push bracket (1564) is respectively connected to a non-thrust rod or a V-shaped thrust rod (1121) or a trapezoidal thrust rod (1122) or an X-shaped thrust rod (1123) or a side push thrust rod (1124).

9. A novel air suspension and axle assembly according to claim 3, characterized in that, Both the first front equalizing beam (1314) and the first rear equalizing beam (1313) can be divided into two equalizing beam track structures, namely, an arc-shaped equalizing beam structure and a Z-shaped equalizing beam structure, and the cross section can be divided into door-shaped, mountain-shaped, T-shaped, mouth-shaped or I-shaped.

10. A novel air suspension and axle assembly according to claim 7, characterized in that, Both the second front equalizing beam (152) and the second rear equalizing beam (153) can be divided into two equalizing beam track structures, namely, an arc-shaped equalizing beam structure and a Z-shaped equalizing beam structure, and the cross section can be divided into door-shaped, mountain-shaped, T-shaped, mouth-shaped or I-shaped.

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