Parallel rubber balanced suspension system

Abstract

The utility model discloses a parallel rubber balanced suspension system, which belongs to the technical field of wheeled cranes and comprises two groups of rubber single-side assemblies arranged oppositely, two ends of each rubber single-side assembly are respectively connected with the front and rear parts of an axle, the upper parts of the rubber single-side assemblies are connected with a frame, and the lower parts of the rubber single-side assemblies are connected with the frame. Two sets of V-shaped thrust rods are arranged between the two sets of rubber single-side assembly bodies, the V opening ends of the two sets of V-shaped thrust rods are oppositely arranged and connected with a frame, the tip ends of the two sets of V-shaped thrust rods are connected with the front portion and the rear portion of an axle respectively, an axle limiting block is arranged on the axle, a rubber spring is assembled on the axle limiting block, and the rubber spring is located below the frame. The upper portion of the rubber spring contacts with the lower portion of the frame. The rubber balanced suspension assembly is suitable for the wheeled crane, the bearing capacity of the rubber balanced suspension assembly can be improved, an axle and a frame are prevented from being rigidly limited frequently, the axle and the frame are prevented from being broken down and damaged, and meanwhile the service life of a rubber balanced suspension is prolonged.

Description

Technical Field

[0001] The utility model relates to a parallel rubber balance suspension system, belonging to the technical field of wheel cranes. Background Art

[0002] Suspension is a general term for all force transmission connection devices between the vehicle frame and the axle. The main function of the suspension is to transfer the vertical reaction force, longitudinal reaction force and lateral reaction force of the road surface on the wheels and the torque formed by these reaction forces to the frame to ensure the normal driving of the vehicle. The commonly used suspension forms for domestic commercial vehicles and engineering vehicles are leaf spring suspension and rubber suspension. The rubber suspension has the characteristics of light weight, low noise, maintenance-free and variable stiffness, so that the deviation frequency of the whole vehicle of the truck crane does not change much when it is loaded or not, which is conducive to improving the smoothness of the whole vehicle, and is widely used in the rear suspension of truck cranes.

[0003] The existing rubber balance suspension system is a component connecting the axle and the frame. It is rigidly connected to the axle and the frame through fasteners, transmits the force and torque input by the axle, and plays a role of connecting the upper and lower parts. When one side of the axle is impacted, it will be transmitted to the same side of the other axle through the rubber balance suspension system, thereby balancing the force on the axle. In the prior art, the main spring and auxiliary spring of the rubber balance suspension system are connected in parallel. Due to the limited layout space and the property limitations of the rubber material itself, the stiffness of the auxiliary spring itself is limited. In addition, the lever of this type of rubber balance suspension is relatively small, and the stiffness converted to the wheel is relatively small. When the truck crane is traveling at high speed with a counterweight and a single wheel is subjected to a large impact, the rubber balance suspension cannot be effectively limited, but is rigidly limited by the limit block of the axle and the frame. When the limit block is frequently used for rigid limit, on the one hand, the rubber spring will be damaged due to large deflection deformation, reducing the service life of the rubber balance suspension, and on the other hand, it will also cause breakdown damage to the axle and the frame. Utility Model Content

[0004] The technical problem to be solved by the utility model is to overcome the defects of the prior art and provide a parallel rubber balance suspension system, which can improve the load-bearing capacity of the rubber balance suspension assembly, prevent the axle and the frame from being frequently rigidly limited, avoid the axle and the frame from being penetrated and damaged, and at the same time increase the service life of the rubber balance suspension.

[0005] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0006] A parallel rubber balance suspension system comprises two groups of relatively arranged rubber single-side assemblies, two ends of the rubber single-side assemblies are respectively connected to the front and rear parts of a vehicle axle, the upper part of the rubber single-side assembly is connected to a vehicle frame, two groups of V-shaped thrust rods are arranged between the two groups of the rubber single-side assemblies, the V-mouth ends of the two groups of the V-shaped thrust rods are relatively arranged and connected to the vehicle frame, the tips of the two groups of the V-shaped thrust rods are respectively connected to the front and rear parts of the vehicle axle, an axle limit block is arranged on the vehicle axle, a rubber spring is assembled on the axle limit block, the rubber spring is located below the vehicle frame, and when the vehicle frame is counterweighted, the upper part of the rubber spring contacts the lower part of the vehicle frame.

[0007] The rubber single-side assembly includes a balance beam, both ends of which are connected to the front and rear parts of the axle, a shearing rubber is connected to the balance beam, a compression rubber is arranged in the middle of the shearing rubber, a transition bracket is connected to the shearing rubber and the compression rubber, and the transition bracket is connected to the frame.

[0008] The number of the axle limit blocks and rubber springs is four, and they are respectively located on both sides of the front and rear parts of the axle.

[0009] The cross section of the rubber spring includes a circle or a square.

[0010] The rubber spring comprises a rubber layer and a steel plate, and a layer of the rubber layer is vulcanized between two layers of the steel plates.

[0011] The axle limit block and the rubber spring are connected by a slot or interference fit.

[0012] The rubber hardness of the rubber spring is above 80HA.

[0013] The rubber single-sided assembly and the V-shaped thrust rod are connected to the axle, and the rubber single-sided assembly and the V-shaped thrust rod are connected to the frame via fasteners.

[0014] The beneficial effects of the utility model are as follows: the utility model provides a parallel rubber balancing suspension system, an axle limit block is provided on the axle, a rubber spring is assembled on the axle limit block, the upper part of the rubber spring is in contact with the lower part of the frame, and by connecting four groups of rubber springs in parallel on the axle, the load-bearing capacity and limiting capacity of the rubber balancing suspension assembly can be improved, the number of rigid collisions between the frame and the axle can be reduced, the stroke and number of compression of the rubber suspension can be reduced, and the axle and frame are not frequently rigidly limited, thereby improving the service life of the rubber suspension and reducing the risk of the axle and frame being punctured. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the installation position structure of a parallel rubber balance suspension system of the utility model;

[0016] Figure 2 It is a structural schematic diagram of the rubber single-side assembly and the V-shaped thrust rod in the utility model;

[0017] Figure 3 It is a structural schematic diagram of the rubber single-side assembly in the utility model;

[0018] Figure 4 It is a cross-sectional structural diagram of the axle limit block and the rubber spring in the utility model;

[0019] Figure 5 It is a front structural schematic diagram of the rubber spring in the utility model.

[0020] The reference numerals in the figure are as follows: 1-balanced suspension system; 2-axle; 3-frame; 4-rubber single-side assembly; 5-V-thrust rod; 6-fastener; 7-balance beam; 8-shear type rubber; 9-transition bracket; 10-compression type rubber; 11-axle limit block; 12-rubber spring; 121 rubber layer; 122-steel plate. DETAILED DESCRIPTION

[0021] Example 1

[0022] like Figure 1 , Figure 2 and Figure 4 As shown, the utility model discloses a parallel rubber balanced suspension system, wherein the balanced suspension system 1 is installed between the axle 2 and the frame 3, and the balanced suspension system 1 comprises two groups of relatively arranged rubber single-side assemblies 4, wherein the two ends of the rubber single-side assemblies 4 are respectively connected to the front and rear parts of the axle 2, and the upper part of the rubber single-side assemblies 4 is connected to the frame 3, and two groups of V-shaped thrust rods 5 are arranged between the two groups of rubber single-side assemblies 4, and the V-mouth ends of the two groups of V-shaped thrust rods 5 are relatively arranged and connected to the frame 3, and the tips of the two groups of V-shaped thrust rods 5 are respectively connected to the front and rear parts of the axle 2, and the axle 2 is provided with an axle limit block 11, which is an existing balanced suspension system structure, and the counterweight is driven at high speed, and the rubber balanced suspension cannot be effectively limited, but is rigidly limited by the limit block of the axle and the frame. The improvement of the utility model is that a rubber spring 12 is assembled on the axle limit block 11, and the rubber spring 12 is located below the frame 3. When the frame 3 is counterweighted, the upper part of the rubber spring 12 contacts the lower part of the frame 3, and the rubber spring 12 provides a part of the supporting force for the frame 3.

[0023] The working principle of the utility model is as follows: the rubber spring 12 has a large rigidity and plays a role of buffering and limiting. When the crane is traveling without a counterweight, there is a gap between the rubber spring 12 and the frame 3, and the crane mainly relies on the rubber suspension single-side assembly 4 to withstand the vertical force; when traveling with a counterweight, there is no gap between the rubber spring 12 and the frame 13, and the rubber spring 12 and the rubber suspension single-side assembly 4 are connected in parallel to improve the bearing capacity and limiting capacity; when the counterweight is subjected to a large impact load, it is finally limited by the limit block 4 and the frame 3 rigidly.

[0024] The utility model connects four groups of rubber springs in parallel on the vehicle axle, thereby improving the load-bearing capacity and limiting capacity of the rubber balanced suspension assembly, reducing the number of rigid collisions between the vehicle frame and the vehicle axle, reducing the stroke and number of times the rubber suspension is compressed, and preventing the vehicle axle and the vehicle frame from being frequently rigidly limited, thereby improving the service life of the rubber suspension and reducing the risk of the vehicle axle and the vehicle frame being punctured.

[0025] Example 2

[0026] like Figure 1 , Figure 2 and Figure 4 As shown, the utility model discloses a parallel rubber balanced suspension system, wherein the balanced suspension system 1 is installed between the axle 2 and the frame 3, and the balanced suspension system 1 comprises two groups of relatively arranged rubber single-side assemblies 4, wherein the two ends of the rubber single-side assemblies 4 are respectively connected to the front and rear parts of the axle 2, and the upper part of the rubber single-side assemblies 4 is connected to the frame 3, and two groups of V-shaped thrust rods 5 are arranged between the two groups of rubber single-side assemblies 4, and the V-mouth ends of the two groups of V-shaped thrust rods 5 are relatively arranged and connected to the frame 3, and the tips of the two groups of V-shaped thrust rods 5 are respectively connected to the front and rear parts of the axle 2, and the axle 2 is provided with an axle limit block 11, which is an existing balanced suspension system structure, and the counterweight is driven at high speed, and the rubber balanced suspension cannot be effectively limited, but is rigidly limited by the limit block of the axle and the frame. The improvement of the utility model is that a rubber spring 12 is mounted on the axle limit block 11, the upper part of the rubber spring 12 contacts the lower part of the frame 3, and the rubber spring 12 provides a part of the support force for the frame 3. The rubber single-sided assembly 4 and the V-shaped thrust rod 5 are connected to the axle 2, and the rubber single-sided assembly 4 and the V-shaped thrust rod 5 are connected to the frame 3 through fasteners 6.

[0027] like Figure 3 As shown, the rubber single-sided assembly 4 includes a balancing beam 7, both ends of which are connected to the front and rear parts of the axle 2, a shearing rubber 8 is connected to the balancing beam 7, a compression rubber 10 is arranged in the middle of the shearing rubber 8, a transition bracket 9 is connected to the shearing rubber 8 and the compression rubber 10, and the transition bracket 9 is connected to the frame 3.

[0028] In the present invention, there are four axle limit blocks 11 and rubber springs 12, which are respectively located on both sides of the front and rear parts of the axle 2. The cross section of the rubber spring 12 includes a circle or a square, and in this embodiment, it is a circle. The axle limit block 11 and the rubber spring 12 are connected by a slot or an interference fit, and in this embodiment, the slot connection is selected. The rubber hardness of the rubber spring 12 is above 80HA, the middle of the rubber spring 12 is hollow, and a circle of rubber is vulcanized on the inside. Figure 5 As shown, the rubber spring 12 includes a rubber layer 121 and a steel plate 122 , and a rubber layer 121 is vulcanized between the two steel plates 122 .

[0029] The above are only preferred implementations of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A parallel rubber balance suspension system, characterized in that: The invention comprises two groups of rubber single-sided assemblies (4) arranged opposite to each other, the two ends of the rubber single-sided assemblies (4) are respectively connected to the front and rear parts of the axle (2), the upper part of the rubber single-sided assemblies (4) is connected to the frame (3), two groups of V-shaped thrust rods (5) are arranged between the two groups of rubber single-sided assemblies (4), the V-mouth ends of the two groups of V-shaped thrust rods (5) are arranged opposite to each other and are connected to the frame (3), the tips of the two groups of V-shaped thrust rods (5) are respectively connected to the front and rear parts of the axle (2), the axle (2) is provided with an axle limit block (11), the axle limit block (11) is equipped with a rubber spring (12), the rubber spring (12) is located below the frame (3), and when the frame (3) is counterweighted, the upper part of the rubber spring (12) contacts the lower part of the frame (3).

2. The parallel rubber balanced suspension system according to claim 1, characterized in that: The rubber single-sided assembly (4) comprises an equalizing beam (7), the two ends of which are connected to the front and rear parts of the axle (2), the equalizing beam (7) is connected to a shearing type rubber (8), a compression type rubber (10) is arranged in the middle of the shearing type rubber (8), the shearing type rubber (8) and the compression type rubber (10) are connected to a transition bracket (9), and the transition bracket (9) is connected to the vehicle frame (3).

3. The parallel rubber balanced suspension system according to claim 1, characterized in that: The number of the axle limit blocks (11) and rubber springs (12) is four, and they are respectively located on both sides of the front and rear parts of the axle (2).

4. The parallel rubber balanced suspension system according to claim 1, characterized in that: The cross section of the rubber spring (12) includes a circle or a square.

5. The parallel rubber balanced suspension system according to claim 1, characterized in that: The rubber spring (12) comprises a rubber layer (121) and a steel plate (122), and a layer of the rubber layer (121) is vulcanized between two layers of the steel plate (122).

6. The parallel rubber balanced suspension system according to claim 1, characterized in that: The axle limit block (11) and the rubber spring (12) are connected by a slot or an interference fit.

7. The parallel rubber balanced suspension system according to claim 1, characterized in that: The rubber hardness of the rubber spring (12) is above 80HA.

8. The parallel rubber balanced suspension system according to claim 1, characterized in that: The rubber single-sided assembly (4) and the V-shaped thrust rod (5) are connected to the axle (2), and the rubber single-sided assembly (4) and the V-shaped thrust rod (5) are connected to the vehicle frame (3) via fasteners (6).

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