Light-weight, low-gravity-center and stress-dispersed rubber suspension assembly

Abstract

The invention relates to the technical field of automobile suspensions, in particular to a light-weight low-gravity-center stress-dispersed rubber suspension assembly which comprises a balance beam assembly, the middle of the balance beam assembly extends upwards to form a trapezoidal protrusion, and a trapezoidal mounting lower plate is fixedly mounted on the top face of the trapezoidal protrusion. The rubber main springs are symmetrically installed on the upper surfaces of the two ends of the trapezoidal installation lower plate, the upper cover body is installed at the top connecting the two rubber main springs, the two rubber main springs support the upper cover body in an inverted V shape, the upper cover body is directly connected with a vehicle frame, the rubber auxiliary spring is fixedly installed in the center of the lower surface of the bottom of the upper cover body, and the height of the rubber auxiliary spring is smaller than that of the rubber main springs. A limiting device is mounted between the upper cover body and the equalizing beam assembly; the gravity center of the rubber main spring moves downwards, the rubber main spring moves towards the two sides, the stress points of the balance beam assembly are dispersed from the center point to the two sides, the rubber main spring supports the upper cover body in an inverted V shape, the bearing requirement of the rubber suspension is met, the assembly structure is optimized, and the service life is greatly prolonged.

Description

Technical Field

[0001] The invention relates to the technical field of automobile suspension, and in particular to a lightweight, low-center-of-gravity, and force-dispersed rubber suspension assembly. Background Art

[0002] Commercial vehicle chassis suspension is divided into leaf spring suspension, air suspension and rubber suspension according to the structure and vibration reduction elements. At present, more than 90% of the chassis suspension of domestic commercial vehicles uses leaf spring suspension. With the development trend of domestic overweight control and vehicle lightweighting, air suspension is gradually used and promoted on domestic commercial vehicle chassis. Due to the high cost of air suspension, it will take some time for air suspension to be popularized in China. Rubber suspension takes into account lightweight and cost advantages, and has been promoted and used on domestic commercial vehicle chassis in recent years. Common rubber suspensions on the market mainly include saddle bracket assembly, balance beam assembly, rubber springs, shock absorbers, auxiliary springs and other components.

[0003] The utility model patent with the patent number CN 218140925 U discloses a lightweight and high-strength structural rubber suspension, which optimizes the assembly structure and reduces the weight of the suspension assembly. However, the suspension assembly adopts a positive V-shaped structure, and the lower ends of the rubber main springs on both sides are tilted toward the center of the balancing beam. Not only is the center of gravity high, but the force points are concentrated to a point in the middle of the balancing beam. The force is single, and long-term use will cause the center of the balancing beam to be overloaded. In addition, the internal structure of the rubber main spring mostly adopts a flat bracket or a single-sided bracket. The disadvantage of this structure is that the internal bracket cannot release the external force evenly, and can only act on a certain point or one place, and there is a risk of cracking between the rubber and the bracket. Because of frequent compression and heavy loads, its service life is limited. Therefore, there is room for further optimization of the structure of the rubber suspension assembly. Summary of the invention

[0004] The technical problem to be solved by the present invention is to provide a rubber suspension assembly which adopts a lower V-shaped structure, has a long service life, is lightweight, has a low center of gravity and is force dispersed.

[0005] In order to solve the above technical problems, the technical solution of the present invention is: it includes an equalizing beam assembly, the middle part of the equalizing beam assembly extends upward to form a trapezoidal protrusion, the top surface of the trapezoidal protrusion is fixedly installed with a trapezoidal mounting lower plate, the upper surfaces of both ends of the trapezoidal mounting lower plate are symmetrically installed with rubber main springs, an upper cover body is installed on the top connecting the two rubber main springs, the two rubber main springs form an inverted V-shaped support for the upper cover body, the upper cover body is directly connected to the frame, and a rubber secondary spring is fixedly installed at the center of the bottom lower surface of the upper cover body, the rubber secondary spring is located between the two rubber main springs, the height of the rubber secondary spring is less than the height of the rubber main spring, and a limiting device is installed between the upper cover body and the equalizing beam assembly.

[0006] As a preferred technical solution, the rubber main spring includes a top bowl-shaped bracket and a bottom bowl-shaped bracket, and more than two layers of intermediate bowl-shaped brackets are arranged between the top bowl-shaped bracket and the bottom bowl-shaped bracket. The top bowl-shaped bracket, the bottom bowl-shaped bracket and the intermediate bowl-shaped bracket have the same bending arc and equal spacing. A top rubber block is integrally vulcanized between the top bowl-shaped bracket and the adjacent intermediate bowl-shaped bracket, an intermediate rubber block is integrally vulcanized between two adjacent intermediate bowl-shaped brackets, and a bottom rubber block is integrally vulcanized between the bottom bowl-shaped bracket and the adjacent intermediate bowl-shaped bracket.

[0007] As a preferred technical solution, the top bowl-shaped bracket comprises a top square flat plate, the four corners of the top square flat plate are respectively provided with mounting holes, the lower surface of the top square flat plate is provided with a bowl-shaped surrounding bracket extending in an arc shape downward from the center, the bowl mouth of the bowl-shaped surrounding bracket is provided with a top horizontal flange, and a plurality of reinforcing ribs are provided between the top square flat plate and the top horizontal flange; The bottom bowl-shaped bracket comprises a bottom square flat plate, four corners of which are respectively provided with mounting holes, and the middle of the bottom square flat plate is bent upward and protruded to be provided with a bowl-shaped surrounding bracket; The middle bowl-shaped bracket comprises a bowl-shaped spacing bracket, and a middle horizontal flange is provided at the bowl mouth of the bowl-shaped spacing bracket, and the middle horizontal flange is consistent in shape and size with the top horizontal flange.

[0008] As a preferred technical solution, the top rubber block includes a top rubber body adapted to the bowl-shaped surrounding bracket, a top rubber horizontal flange is provided at the lower part of the top rubber body, and the top rubber horizontal flange is inclined to one side by 10° to 30°; the middle rubber block includes a middle rubber body adapted to the bowl-shaped spacing bracket, a middle rubber horizontal flange is provided at the lower part of the middle rubber body, and the middle rubber horizontal flange is inclined to one side by 10° to 30°; the bottom rubber block includes a bottom rubber body adapted to the bowl-shaped surrounding bracket, a bottom rubber horizontal flange is provided at the lower part of the bottom rubber body, and the bottom rubber horizontal flange is inclined to one side by 10° to 30°, and the inclination directions of the top rubber horizontal flange, the middle rubber horizontal flange and the bottom rubber horizontal flange are consistent.

[0009] As a preferred technical solution, the top rubber horizontal flange is inclined 20° to one side; the middle rubber horizontal flange is inclined 20° to one side; and the bottom rubber horizontal flange is inclined 20° to one side.

[0010] As a preferred technical solution, the rubber auxiliary spring includes an auxiliary spring mounting plate, the auxiliary spring mounting plate is provided with a mounting hole, a plurality of layers of rubber blocks are vulcanized on the bottom of the auxiliary spring mounting plate, and a reinforcing partition is provided between two adjacent rubber blocks.

[0011] As a preferred technical solution, the equalizing beam assembly includes a crossbeam with a U-shaped cross section, and joint bearings are respectively installed at both ends of the crossbeam. The trapezoidal mounting lower plate is fixedly installed in the middle of the upper surface of the crossbeam. The trapezoidal mounting lower plate includes a lower center plate, and lower waist plates are symmetrically and integrally provided on both sides of the lower center plate. The lower waist plate is provided with mounting holes for mounting the bottom surface of the rubber main spring, and the width of the trapezoidal mounting lower plate is greater than the width of the crossbeam.

[0012] As a preferred technical solution, the upper cover body includes two parallel and spaced trapezoidal notch vertical plates, the two ends of the trapezoidal notch vertical plates are inclined, and an inclined mounting plate is installed to connect the corresponding ends of the two trapezoidal notch vertical plates, and the inclined mounting plate is used to connect the frame; a trapezoidal mounting upper plate is fixedly installed at the trapezoidal notch at the bottom of the trapezoidal notch vertical plate, and the shape of the trapezoidal mounting upper plate is consistent with the shape and size of the trapezoidal mounting lower plate, and the trapezoidal mounting upper plate includes an upper center plate, and upper waist plates are symmetrically and integrally provided on both sides of the upper center plate, and the upper waist plate is provided with a mounting hole for installing the top surface of the rubber main spring, and the upper center plate is provided with a mounting hole for installing the rubber secondary spring.

[0013] As a preferred technical solution, hinge shafts are symmetrically installed at both ends of one side of the equalizing beam assembly, and the hinge shafts are used to install damping shock absorbers.

[0014] As a preferred technical solution, lower ear seats are respectively provided at the centers of the two side surfaces of the equalizing beam assembly, and upper ear seats for use with the lower ear seats are also provided on the two side surfaces of the upper cover body, and the limiting device is a limiting chain connecting the upper ear seat and the lower ear seat on the same side.

[0015] Due to the adoption of the above technical scheme, a lightweight, low-center-of-gravity and force-dispersed rubber suspension assembly comprises an equalizing beam assembly, wherein the middle portion of the equalizing beam assembly extends upward to form a trapezoidal protrusion, a trapezoidal mounting lower plate is fixedly mounted on the top surface of the trapezoidal mounting lower plate, rubber main springs are symmetrically mounted on the upper surfaces of both ends of the trapezoidal mounting lower plate, an upper cover body is mounted on the top connecting the two rubber main springs, the two rubber main springs form an inverted V-shaped support for the upper cover body, the upper cover body is directly connected to the vehicle frame, a rubber auxiliary spring is fixedly mounted at the center of the bottom lower surface of the upper cover body, the rubber auxiliary spring is located between the two rubber main springs, the height of the rubber auxiliary spring is less than the height of the rubber main spring, and the upper cover body is connected to the equalizing beam assembly. A limiting device is installed between the assemblies; the beneficial effects of the present invention are: the upper cover body of the present invention is an iron or stainless steel part, which is directly connected to the frame, replacing the saddle bracket assembly in the prior art, so that the overall structure of the rubber main spring moves downward, causing the center of gravity to move downward, and the rubber main spring moves to both sides, the force point of the balancing beam assembly is dispersed from the center point to both sides, and the original upper V-shaped support of the upper cover body by the rubber main spring is changed to an inverted V-shaped support of the upper cover body by the rubber main spring. The rubber main spring is directly connected between the balancing beam assembly and the upper cover body, which greatly reduces the overall height of the present invention and lowers the center of gravity, which not only meets the load-bearing requirements of the rubber suspension, but also optimizes the assembly structure, reduces the weight of the assembly, conforms to the lightweight trend, and greatly improves the service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The following drawings are intended only to illustrate and explain the present invention, and are not intended to limit the scope of the present invention. Figure 1 It is a three-dimensional structural schematic diagram of a lightweight, low-center-of-gravity and force-dispersed rubber suspension assembly of the present invention; Figure 2 yes Figure 1 A-direction view in the figure; Figure 3 yes Figure 1 B view in the figure; Figure 4 yes Figure 1 C-direction view in; Figure 5 It is a schematic diagram of the upper cover structure of the lightweight, low-center-of-gravity and force-dispersed rubber suspension assembly of the present invention; Figure 6 yes Figure 5 D-direction view in; Figure 7 This is one of the schematic diagrams of the rubber main spring structure of the lightweight, low-center-of-gravity and force-dispersed rubber suspension assembly of the present invention; Figure 8 yes Figure 7 E-direction view in; Fig. 9 yes Figure 8 Cross-sectional view along the FF axis; Fig.10 yes Figure 7 The G view in the figure; Fig.11 It is a structural schematic diagram of the top bowl-shaped bracket of the rubber main spring of the present invention; Fig.12 is a cross-sectional view of a top bowl-shaped bracket of the rubber main spring of the present invention; Fig.13 It is a schematic structural diagram of the middle bowl-shaped bracket of the rubber main spring of the present invention; Fig.14 It is a structural schematic diagram of the bottom bowl-shaped bracket of the rubber main spring of the present invention; Fig.15 This is one of the schematic diagrams of the rubber auxiliary spring structure of the lightweight, low-center-of-gravity and force-dispersed rubber suspension assembly of the present invention; Fig.16 This is the second schematic diagram of the rubber auxiliary spring structure of the lightweight, low-center-of-gravity and force-dispersed rubber suspension assembly of the present invention; Fig.17 yes Fig.16 Cross-sectional view along the mid-HH direction; Fig.18 It is one of the structural schematic diagrams of the equalizing beam assembly of the lightweight, low-center-of-gravity and force-dispersed rubber suspension assembly of the present invention; Fig.19 This is the second structural schematic diagram of the equalizing beam assembly of the lightweight, low-center-of-gravity and force-dispersed rubber suspension assembly of the present invention.

[0017] In the figure: 1-balance beam assembly; 11-trapezoidal mounting lower plate; 12-cross beam; 13-spherical bearing; 14-articulated shaft; 15-damping shock absorber; 16-lower ear seat; 2-rubber main spring; 21-top bowl-shaped bracket; 211-top square flat plate; 212-bowl-shaped surrounding bracket; 213-top horizontal flange; 214-reinforcement rib; 22-bottom bowl-shaped bracket; 221-bottom square flat plate; 222-bowl-shaped surrounding bracket; 23-middle bowl-shaped bracket; 231-bowl-shaped spacing bracket; 232-middle horizontal flange ;24-top rubber block;241-top rubber body;242-top rubber horizontal flange;25-middle rubber block;251-middle rubber body;252-middle rubber horizontal flange;26-bottom rubber block;261-bottom rubber body;262-bottom rubber horizontal flange;3-upper cover;31-upper ear seat;32-trapezoidal notched vertical plate;33-inclined mounting plate;34-trapezoidal mounting upper plate;4-rubber secondary spring;41-secondary spring mounting plate;42-rubber block;43-reinforced partition;5-limiting chain. DETAILED DESCRIPTION

[0018] The present invention is further described below in conjunction with the accompanying drawings and examples. In the following detailed description, certain exemplary embodiments of the present invention are described only by way of illustration. Needless to say, those of ordinary skill in the art will recognize that the described embodiments may be modified in various ways without departing from the spirit and scope of the present invention. Therefore, the drawings and description are illustrative in nature and are not intended to limit the scope of protection of the claims.

[0019] like Figures 1 to 19 As shown together, a lightweight, low-center-of-gravity and force-dispersed rubber suspension assembly comprises an equalizing beam assembly 1, the middle portion of the equalizing beam assembly 1 extends upward to form a trapezoidal protrusion, a trapezoidal mounting lower plate 11 is fixedly mounted on the top surface of the trapezoidal protrusion, rubber main springs 2 are symmetrically mounted on the upper surfaces of both ends of the trapezoidal mounting lower plate 11, an upper cover body 3 is mounted on the top connecting the two rubber main springs 2, the two rubber main springs 2 form an inverted V-shaped support for the upper cover body 3, the upper cover body 3 is directly connected to the frame, a rubber secondary spring 4 is fixedly mounted at the center of the bottom lower surface of the upper cover body 3, the rubber secondary spring 4 is located between the two rubber main springs 2, the height of the rubber secondary spring 4 is less than the height of the rubber main spring 2, and a limiting device is installed between the upper cover body 3 and the equalizing beam assembly 1; the present invention The upper cover body 3 of the invention is an iron part, a stainless steel part, a sheet metal welded part or a cast steel part, which is directly connected to the frame, replacing the saddle bracket assembly in the prior art, so that the overall structure of the rubber main spring 2 moves downward, causing the center of gravity to move downward, and the rubber main spring 2 moves to both sides, and the force point of the balancing beam assembly 1 is dispersed from the center point to both sides. The original upper V-shaped support of the rubber main spring 2 on the upper cover body 3 is changed to an inverted V-shaped support of the rubber main spring 2 on the upper cover body 3. The rubber main spring 2 is directly connected between the balancing beam assembly 1 and the upper cover body 3, which greatly reduces the overall height of the invention and lowers the center of gravity. It not only meets the load-bearing requirements of the rubber suspension, but also optimizes the assembly structure, reduces the assembly weight, conforms to the lightweight trend, and greatly improves the service life.

[0020] like Figures 7 to 14As shown together, the rubber main spring 2 includes a top bowl-shaped bracket 21 and a bottom bowl-shaped bracket 22. There are two or more layers of intermediate bowl-shaped brackets 23 between the top bowl-shaped bracket 21 and the bottom bowl-shaped bracket 22. In this embodiment, there are two layers of intermediate bowl-shaped brackets 23. The number of layers of the intermediate bowl-shaped brackets 23 can also be adjusted according to actual conditions. The top bowl-shaped bracket 21, the bottom bowl-shaped bracket 22 and the intermediate bowl-shaped bracket 23 have the same curvature and equal spacing. A top rubber block 24 is integrally vulcanized between the top bowl-shaped bracket 21 and its adjacent intermediate bowl-shaped bracket 23. The top rubber block 24 is connected to the top bowl-shaped bracket 21 and the intermediate bowl-shaped bracket 23 in an arc shape, which greatly increases the contact area and reduces the risk of cracking between the top rubber block 24 and the top bowl-shaped bracket 21. An intermediate rubber block 25 is integrally vulcanized between two adjacent intermediate bowl-shaped brackets 23. The intermediate rubber block 25 is sandwiched between the two intermediate bowl-shaped brackets 23, which also increases the contact area and reduces the risk of cracking between the intermediate rubber block 25 and the intermediate bowl-shaped bracket 23. A bottom rubber block 26 is integrally vulcanized between the bottom bowl-shaped bracket 22 and the adjacent middle bowl-shaped bracket 23. The bottom rubber block 26 is connected to the bottom bowl-shaped bracket 22 and the middle bowl-shaped bracket 23 in an arc shape, which greatly increases the contact area and reduces the risk of cracking between the bottom rubber block 26 and the bottom bowl-shaped bracket 22. The top bowl-shaped bracket 21, the bottom bowl-shaped bracket 22 and the middle bowl-shaped bracket 23 are preferably cast steel parts, and can also be sheet metal parts.

[0021] like Figure 12 to Figure 14 As shown together, the top bowl-shaped bracket 21 includes a top square flat plate 211, and the four corners of the top square flat plate 211 are respectively provided with mounting holes, and the mounting holes are used to be fixedly connected with the upper cover body 3. The lower surface of the top square flat plate 211 is provided with a bowl-shaped surrounding bracket 212 extending in an arc shape from the center downward, and the curvature of the bowl-shaped surrounding bracket 212 is consistent with the curvature of the top rubber body 241. The upper surface of the top rubber body 241 and the bowl-shaped surrounding bracket 212 are tightly fitted and vulcanized together, and the lower surface of the top rubber body 241 and the bowl-shaped spacing bracket 231 are tightly fitted and vulcanized together. A top horizontal flange 213 is provided at the bowl mouth of the bowl-shaped surrounding bracket 212. The top horizontal flange 213 is a regular octagon in this embodiment, and can also be a circle, an ellipse or other polygons. A plurality of reinforcing ribs 214 are provided between the top square flat plate 211 and the top horizontal flange 213 ; the reinforcing ribs 214 provide more effective support for the bowl-shaped surrounding bracket 212 . In this embodiment, four reinforcing ribs 214 are provided, and the number may be increased or decreased according to actual conditions.

[0022] The bottom bowl-shaped bracket 22 includes a bottom square flat plate 221, and the four corners of the bottom square flat plate 221 are respectively provided with mounting holes, and the mounting holes are used to be fixedly connected with the equalizing beam assembly 1. The middle part of the bottom square flat plate 221 is bent upward and protruded to be provided with a bowl-shaped surrounding bracket 222; the curvature of the bowl-shaped surrounding bracket 222 is consistent with the curvature of the bottom rubber body 261, and the lower surface of the bottom rubber body 261 is tightly fitted and vulcanized with the bowl-shaped surrounding bracket 222, and the upper surface of the bottom rubber body 261 is tightly fitted and vulcanized with the bowl-shaped spacing bracket 231. The middle bowl-shaped bracket 23 includes a bowl-shaped spacing bracket 231, and the bowl mouth of the bowl-shaped spacing bracket 231 is provided with a middle horizontal flange 232, and the middle horizontal flange 232 is consistent in shape and size with the top horizontal flange 213. The upper and lower surfaces of the middle rubber body 251 are tightly fitted and vulcanized with the bowl-shaped spacing bracket 231.

[0023] In the prior art, the internal structure of the rubber main spring 2 is mostly a plane bracket or a single-sided bracket. The disadvantage of this structure is that the internal bracket cannot release the external force evenly, and can only act on a certain point or one place, and there is a risk of cracking between the rubber and the bracket. Because of frequent compression and heavy load, its service life is limited. The rubber main spring 2 of this embodiment changes the bracket shape to an arc bowl shape, the internal strength is increased by more than 30%, the shock absorption and buffering effect is better, the cracking risk between the rubber and the bracket is reduced, and the compression and heavy load bearing performance is enhanced. The top bowl-shaped bracket 21, the bottom bowl-shaped bracket 22 and the middle bowl-shaped bracket 23 are all stamped and formed, and the four brackets are vulcanized as a vulcanized part with a skeleton. The rubber main spring 2 in this embodiment has increased strength, good shock absorption and buffering, and the overall force of the suspension is uniform when overloaded and unbalanced. It can better adapt to the different load-bearing conditions of the vehicle, effectively solves the sudden change of the suspension frequency when the vehicle is unloaded, medium-loaded and fully loaded, and makes the vehicle run smoothly and comfortably. When unbalanced load occurs, the structure between the rubber and the bracket is relatively stable, the bracket and rubber are not easy to crack, and the service life is also greatly improved.

[0024] like Fig. 9As shown, the top rubber block 24 includes a top rubber body 241 adapted to the bowl-shaped surrounding bracket 212, a top rubber horizontal flange 242 is provided at the bottom of the top rubber body 241, and the top rubber horizontal flange 242 is inclined to one side by 10° to 30°; the middle rubber block 25 includes a middle rubber body 251 adapted to the bowl-shaped spacing bracket 231, a middle rubber horizontal flange 252 is provided at the bottom of the middle rubber body 251, and the middle rubber horizontal flange 252 is inclined to one side by 10° to 30°; the bottom rubber block 26 includes a bottom rubber body 261 adapted to the bowl-shaped surrounding bracket 222, a bottom rubber horizontal flange 262 is provided at the bottom of the bottom rubber body 261, and the bottom rubber horizontal flange 262 is inclined to one side by 10° to 30°, and the inclination directions of the top rubber horizontal flange 242, the middle rubber horizontal flange 252 and the bottom rubber horizontal flange 262 are consistent. The top rubber horizontal flange 242, the middle rubber horizontal flange 252 and the bottom rubber horizontal flange 262 have the same inclination angle, so their outer surfaces are on the same plane. The left and right rubber main springs 2 are symmetrically installed so that they are in an inverted V shape. According to the stability of the triangle, it can be seen that the left and right rubber main springs 2 jointly support the frame for greater stability.

[0025] like Fig. 9 As shown, in this embodiment, the top rubber horizontal flange 242 is inclined to one side by ∠a=20°; the middle rubber horizontal flange 252 is inclined to one side by ∠a=20°; the bottom rubber horizontal flange 262 is inclined to one side by ∠a=20°. The inclination angle can be appropriately adjusted according to actual use, which is within the protection scope of the present invention.

[0026] like Figures 15 to 17 As shown together, the rubber auxiliary spring 4 includes an auxiliary spring mounting plate 41, which is provided with mounting holes, and a plurality of layers of rubber blocks 42 are vulcanized on the bottom of the auxiliary spring mounting plate 41, and a reinforcing partition 43 is provided between two adjacent rubber blocks 42. The thickness of each layer of rubber blocks 42 is preferably consistent, or different thicknesses, and the rubber blocks 42 are approximately rectangular pancake-shaped, and the shape of the reinforcing partition 43 is consistent with the shape of the rubber blocks 42, and the outer periphery of the reinforcing partition 43 extends out of the outer periphery of the rubber blocks 42, and the reinforcing partition 43 and the rubber blocks 42 are arranged at intervals and then vulcanized together, and the auxiliary spring mounting plate 41 with the reinforcing partition 43 located at the top is used for fixed connection with the upper cover body 3, and the rubber auxiliary spring 4 assists the rubber main spring 2 in playing the role of buffering and shock absorption.

[0027] like Fig.18 and Fig.19As shown together, the balancing beam assembly 1 includes a cross beam 12 with a U-shaped cross section, and spherical bearings 13 are respectively installed at both ends of the cross beam 12. A trapezoidal mounting lower plate 11 is fixedly installed in the middle of the upper surface of the cross beam 12. The trapezoidal mounting lower plate 11 includes a lower center plate, and lower waist plates are symmetrically and integrally provided on both sides of the lower center plate. The lower waist plate is provided with mounting holes for installing the bottom surface of the rubber main spring 2, and the width of the trapezoidal mounting lower plate 11 is greater than the width of the cross beam 12. The upper cover 3 includes two parallel and spaced trapezoidal notch vertical plates 32, the two ends of the trapezoidal notch vertical plates 32 are inclined, and the corresponding ends of the two trapezoidal notch vertical plates 32 are connected with an inclined mounting plate 33, and the top plate is connected with the top of the two trapezoidal notch vertical plates 32, and the inclined mounting plate 33 is used to connect the frame; the inclined mounting plates 33 on both sides are in an eight-shaped shape, and a trapezoidal mounting upper plate 34 is fixedly mounted at the trapezoidal notch at the bottom of the trapezoidal notch vertical plates 32, and the shape of the trapezoidal mounting upper plate 34 is consistent with the shape and size of the trapezoidal mounting lower plate 11, and the trapezoidal mounting upper plate 34 includes an upper center plate, and upper waist plates are symmetrically provided on both sides of the upper center plate, and the upper waist plates are provided with mounting holes for mounting the top surface of the rubber main spring 2, and the upper center plate is provided with mounting holes for mounting the rubber auxiliary spring 4. The trapezoidal notch vertical plates 32 are provided with weight-reducing hollows to further reduce the weight of the trapezoidal notch vertical plates 32 while ensuring the supporting strength.

[0028] like Figures 1 to 3 As shown together, hinge shafts 14 are symmetrically installed at both ends of one side of the equalizing beam assembly 1 , and the hinge shafts 14 are used to install damping shock absorbers 15 .

[0029] like Figures 1 to 4 As shown together, lower ear seats 16 are respectively provided at the centers of the two sides of the balancing beam assembly 1, and upper ear seats 31 used in conjunction with the lower ear seats 16 are also provided on the two sides of the upper cover body 3, and the limiting device is a limiting chain 5 connecting the upper ear seat 31 and the lower ear seat 16 on the same side. The limiting chain 5 is used to limit the distance between the balancing beam assembly 1 and the upper cover body 3.

[0030] In the description of the present invention, it is necessary to understand that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship are based on the orientation or position relationship shown in the drawings, and are only for the convenience of describing the present invention 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 cannot be understood as a limitation on the present invention.

[0031] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A lightweight, low-center-of-gravity, and force-dispersed rubber suspension assembly, comprising an equalizing beam assembly (1), characterized in that: The middle part of the balancing beam assembly (1) extends upward to form a trapezoidal protrusion, a trapezoidal mounting lower plate (11) is fixedly mounted on the top surface of the trapezoidal protrusion, rubber main springs (2) are symmetrically mounted on the upper surfaces of both ends of the trapezoidal mounting lower plate (11), an upper cover body (3) is mounted on the top of the two rubber main springs (2), the two rubber main springs (2) form an inverted V-shaped support for the upper cover body (3), the upper cover body (3) is directly connected to the vehicle frame, a rubber auxiliary spring (4) is fixedly mounted at the center of the bottom lower surface of the upper cover body (3), the rubber auxiliary spring (4) is located between the two rubber main springs (2), the height of the rubber auxiliary spring (4) is less than the height of the rubber main spring (2), and a limiting device is installed between the upper cover body (3) and the balancing beam assembly (1).

2. The lightweight, low-center-of-gravity, and force-dispersed rubber suspension assembly as claimed in claim 1, characterized in that: The rubber main spring (2) comprises a top bowl-shaped support (21) and a bottom bowl-shaped support (22), wherein two or more layers of intermediate bowl-shaped supports (23) are arranged between the top bowl-shaped support (21) and the bottom bowl-shaped support (22), wherein the top bowl-shaped support (21), the bottom bowl-shaped support (22) and the intermediate bowl-shaped support (23) have the same curvature and are spaced at equal intervals, wherein a top rubber block (24) is integrally vulcanized between the top bowl-shaped support (21) and the adjacent intermediate bowl-shaped support (23), an intermediate rubber block (25) is integrally vulcanized between two adjacent intermediate bowl-shaped supports (23), and a bottom rubber block (26) is integrally vulcanized between the bottom bowl-shaped support (22) and the adjacent intermediate bowl-shaped support (23).

3. The lightweight, low-center-of-gravity, and force-dispersed rubber suspension assembly as claimed in claim 2, characterized in that: The top bowl-shaped bracket (21) comprises a top square flat plate (211), four corners of the top square flat plate (211) are respectively provided with mounting holes, a bowl-shaped surrounding bracket (212) is provided on the lower surface of the top square flat plate (211) extending in an arc shape downward from the center, a top horizontal flange (213) is provided at the bowl mouth of the bowl-shaped surrounding bracket (212), and a plurality of reinforcing ribs (214) are provided between the top square flat plate (211) and the top horizontal flange (213); The bottom bowl-shaped bracket (22) comprises a bottom square flat plate (221), four corners of the bottom square flat plate (221) are respectively provided with mounting holes, and the middle portion of the bottom square flat plate (221) is bent upward and protrudes to be provided with a bowl-shaped surrounding bracket (222); The middle bowl-shaped support (23) comprises a bowl-shaped spacing support (231), and a middle horizontal flange (232) is provided at the bowl mouth of the bowl-shaped spacing support (231), and the middle horizontal flange (232) is consistent in shape and size with the top horizontal flange (213).

4. The lightweight, low-center-of-gravity and force-dispersed rubber suspension assembly as claimed in claim 3, characterized in that: The top rubber block (24) comprises a top rubber body (241) adapted to the bowl-shaped surrounding bracket (212), a top rubber horizontal flange (242) being provided at the bottom of the top rubber body (241), and the top rubber horizontal flange (242) being inclined to one side by 10° to 30°; the middle rubber block (25) comprises a middle rubber body (251) adapted to the bowl-shaped spacing bracket (231), a middle rubber horizontal flange (252) being provided at the bottom of the middle rubber body (251), and the middle The rubber horizontal flange (252) is inclined at 10° to 30° to one side; the bottom rubber block (26) comprises a bottom rubber body (261) adapted to the bowl-shaped surrounding bracket (222); a bottom rubber horizontal flange (262) is provided at the lower part of the bottom rubber body (261); the bottom rubber horizontal flange (262) is inclined at 10° to 30° to one side; and the top rubber horizontal flange (242), the middle rubber horizontal flange (252) and the bottom rubber horizontal flange (262) have the same inclination direction.

5. The lightweight, low-center-of-gravity, and force-dispersed rubber suspension assembly as claimed in claim 4, characterized in that: The top rubber horizontal flange (242) is inclined 20° to one side; the middle rubber horizontal flange (252) is inclined 20° to one side; and the bottom rubber horizontal flange (262) is inclined 20° to one side.

6. The lightweight, low-center-of-gravity, and force-dispersed rubber suspension assembly as claimed in claim 1, characterized in that: The rubber auxiliary spring (4) comprises an auxiliary spring mounting plate (41), the auxiliary spring mounting plate (41) being provided with a mounting hole, a plurality of layers of rubber blocks (42) being vulcanized on the bottom of the auxiliary spring mounting plate (41), and a reinforcing partition plate (43) being provided between two adjacent rubber blocks (42).

7. The lightweight, low-center-of-gravity, and force-dispersed rubber suspension assembly as claimed in claim 1, characterized in that: The equalizing beam assembly (1) comprises a cross beam (12) having a U-shaped cross section, and joint bearings (13) are respectively installed at both ends of the cross beam (12). The trapezoidal mounting lower plate (11) is fixedly installed in the middle of the upper surface of the cross beam (12), and the trapezoidal mounting lower plate (11) comprises a lower center plate, and lower waist plates are symmetrically and integrally provided on both sides of the lower center plate. The lower waist plates are provided with mounting holes for mounting the bottom surface of the rubber main spring (2), and the width of the trapezoidal mounting lower plate (11) is greater than the width of the cross beam (12).

8. The lightweight, low-center-of-gravity, and force-dispersed rubber suspension assembly as claimed in claim 7, characterized in that: The upper cover body (3) comprises two parallel and spaced trapezoidal notch vertical plates (32), the two ends of the trapezoidal notch vertical plates (32) are inclined, and an inclined mounting plate (33) is installed to connect the corresponding ends of the two trapezoidal notch vertical plates (32), and the inclined mounting plate (33) is used to connect the frame; a trapezoidal mounting upper plate (34) is fixedly installed at the trapezoidal notch at the bottom of the trapezoidal notch vertical plates (32), the shape of the trapezoidal mounting upper plate (34) is consistent with the shape and size of the trapezoidal mounting lower plate (11), and the trapezoidal mounting upper plate (34) comprises an upper center plate, and upper waist plates are symmetrically provided on both sides of the upper center plate, and the upper waist plate is provided with a mounting hole for mounting the top surface of the rubber main spring (2), and the upper center plate is provided with a mounting hole for mounting the rubber auxiliary spring (4).

9. The lightweight, low-center-of-gravity, and force-dispersed rubber suspension assembly as claimed in claim 1, characterized in that: Articulated shafts (14) are symmetrically mounted at both ends of one side of the balancing beam assembly (1), and the articulated shafts (14) are used to mount a damping shock absorber (15).

10. The lightweight, low-center-of-gravity, and force-dispersed rubber suspension assembly as claimed in claim 1, characterized in that: Lower ear seats (16) are respectively provided at the centers of the two side surfaces of the equalizing beam assembly (1), and upper ear seats (31) for use with the lower ear seats (16) are also provided on the two side surfaces of the upper cover body (3), and the limiting device is a limiting chain (5) connecting the upper ear seat (31) and the lower ear seat (16) on the same side.

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