Three-fulcrum symmetrical steering mechanism with damping mechanism

Abstract

The utility model discloses a three-fulcrum symmetrical steering mechanism with a damping mechanism, and relates to the technical field of three-fulcrum vehicle steering. Comprising a steering rack and a hub supporting seat, the steering rack is connected with the hub supporting seat through a supporting shaft, one end of the supporting shaft is hinged to the steering rack, and the other end of the supporting shaft penetrates through the hub supporting seat and can rotate relative to the hub supporting seat; a damping assembly is installed between the steering rack and the hub supporting seat. The supporting shaft and the damping assembly are arranged between the steering rack and the hub supporting seat, a rotary floating type design is adopted, when double wheels pass through a slope or an uneven road surface, the hub supporting seat relatively rotates around the axis of the supporting shaft, the two tires are kept to be perpendicular to the ground all the time, center-of-gravity shift generated by the slope is compensated, and the stability of the double wheels is improved. The gravity center of the vehicle body is basically unchanged; and the limiting bolt is used for limiting, so that rollover can be avoided after the required angle is adjusted. And the damping assembly ensures that the heavy objects are more stable and safer in the transportation process, and the quality of logistics distribution is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to three support point car steering technical field, concretely is a kind of three support point symmetrical steering mechanism with damping mechanism. BACKGROUND

[0002] Three support point car and towing car structure carrying capacity are big, flexibility is strong, practicality is strong, have extensive application in today's goods handling field.The old steering mechanism wheel hub total assembly is fixed structure, tire gravity is offset in one side relative to steering gear seat assembly center.In sprocket drive steering, lateral force can cause vehicle body gravity to be offset, easy to cause whole vehicle gravity imbalance, steering radius is too big, tire early side wear, poor comfort, etc., especially when road is uneven, more obvious when there is slope.Goods safe and stable transportation is one of important purposes.Therefore, we provide a kind of three support point symmetrical steering mechanism with damping mechanism. SUMMARY

[0003] The utility model discloses a three support point symmetrical steering mechanism with damping mechanism to solve the above problems.

[0004] The utility model discloses a three support point symmetrical steering mechanism with damping mechanism, including steering bearing seat assembly, the steering bearing seat assembly below is provided with the rotating turntable by motor drive, the bottom fixed mounting of turntable has steering frame, steering frame below is provided with wheel hub support seat, and steering frame is connected with wheel hub support seat through support shaft, and one end of support shaft is hinged with steering frame, and the other end penetrates wheel hub support seat and can occur relative rotation with it;

[0005] Steering frame and wheel hub support seat are provided with damping bracket assembly, and damping bracket assembly is vertically installed with damping assembly on it, and the top and bottom of damping assembly are fixed with steering frame and wheel hub support seat respectively.

[0006] The utility model discloses further technical improvement lies in: the middle part of wheel hub support seat is provided with installation through slot, and one sleeve is arranged at the both ends of installation through slot, and support shaft penetrates installation through slot and is arranged in two sleeves, and the end of support shaft penetration is limited in the axial direction by nut.

[0007] The utility model discloses further technical improvement lies in: sleeve is JFB type with flanging graphite copper sleeve.

[0008] The utility model discloses further technical improvement lies in: the outer periphery of the working surface of support shaft is provided with helical groove for lubricating oil flow channel.

[0009] The further technical improvement of the utility model lies in: the shock absorbing assembly comprises a guiding framework vertically arranged at the center and a shock absorbing block sleeved outside the guiding framework, the guiding framework is vertically fixed on the hub support base and the top position is movably matched with the steering frame, and the top end and the bottom end of the shock absorbing block are fixedly connected with the steering frame and the hub support base respectively.

[0010] The further technical improvement of the utility model lies in: the shock absorbing block is made of SBR high polymerization degree rubber block.

[0011] The further technical improvement of the utility model lies in: a limiting block is fixed at the bottom position of the steering frame, the limiting block is in contact with the top of the shock absorbing support assembly to form a limit, and the compression amount of the shock absorbing assembly is limited.

[0012] The further technical improvement of the utility model lies in: two limiting bolts are symmetrically fixed at the upper position of the hub support base, a limiting slot is formed at the corresponding position of the hub support base, and the limiting bolts are matched with the limiting slot to limit the left and right inclination degree of the steering frame.

[0013] The further technical improvement of the utility model lies in: the symmetric center positions of the two hub shaft head assemblies coincide with the central axis of the steering bearing seat assembly and the rotating disc.

[0014] Compared with the prior art, the utility model has the following beneficial effects:

[0015] The present application sets the supporting shaft and the shock absorbing assembly between the steering frame and the hub support base, adopts the rotary floating type design, and makes the symmetric center of the double hub shaft head assembly coincide with the axis of the steering bearing seat assembly and the rotating disc, so that when the double wheels pass through the slope or uneven road surface, the hub support base can relatively rotate around the axis of the supporting shaft, the two tires are always kept perpendicular to the ground, the gravity center offset caused by the slope can be compensated, and the gravity center of the vehicle body is basically unchanged; in addition, the limiting by the limiting bolt can ensure that the vehicle will not overturn after the required angle is adjusted. The shock absorbing assembly makes the operation of the driver more convenient, and in the process of transporting heavy objects, it is more stable and safe. When lifting heavy objects, the vehicle shock absorbing system can greatly reduce the vibration and swing of the goods, prevent the goods from being damaged or falling, and ensure the quality of logistics distribution. BRIEF DESCRIPTION OF DRAWINGS

[0016] In order to facilitate the understanding of those skilled in the art, the utility model will be further described below with reference to the drawings.

[0017] Figure 1 It is the overall structure front view schematic drawing of the utility model;

[0018] Figure 2 It is the overall structure cross section schematic drawing of the utility model;

[0019] Figure 3 It is the overall left view structure section view schematic diagram of the utility model;

[0020] Figure 4 It is the support shaft structure schematic diagram of the utility model;

[0021] Figure 5 It is the shock absorbing assembly stress situation analysis schematic diagram of the utility model.

[0022] In the drawing: 1, steering bearing seat assembly; 2, rotary disc; 3, steering rack; 4, support shaft; 5, hub support seat; 6, sleeve; 7, hub shaft head assembly; 8, shock absorbing support assembly; 9, shock absorbing assembly; 10, limit block; 11, limit bolt; 401, helical groove; 901, guide framework; 902, shock absorbing block. DETAILED DESCRIPTION

[0023] In order to further illustrate the technical means and effects adopted by the utility model to achieve the predetermined utility model purposes, the specific implementation, structure, features and effects according to the utility model are described in detail as follows by combining with the drawings and preferred embodiments.

[0024] Please refer to Figures 1-5 As shown in the figure, a three-point symmetrical steering mechanism with a shock absorbing mechanism, comprising a steering bearing seat assembly 1 connected with a vehicle frame, a rotary disc 2 is arranged below the steering bearing seat assembly 1, the rotary disc 2 is sleeved on the top of the steering bearing seat assembly 1 and is connected with it in a rotatable manner, and the top of the rotary disc 2 is fixed with a motor output end on the vehicle frame;

[0025] The bottom of the rotary disc 2 is fixedly provided with a steering rack 3, and the bottom end of one side of the steering rack 3 is swingably provided with a support shaft 4; a hub support seat 5 is horizontally arranged below the steering rack 3, and hub shaft head assemblies 7 are symmetrically arranged at both ends of the hub support seat 5 and are used to install tires through the hub shaft head assemblies 7;

[0026] It should be noted that the center positions of the two hub shaft head assemblies 7 are coincided with the center axes of the steering bearing seat assembly 1 and the rotary disc 2.

[0027] An installation through slot is formed in the middle of the hub support seat 5, and a sleeve 6 is arranged at each end of the installation through slot, the support shaft 4 penetrates through the installation through slot and is arranged in the two sleeves 6, one end of the support shaft 4 is hinged with the steering rack 3, the other end is axially fixed by a hexagonal flange nut locking, and the support shaft 4 can rotate relative to the installation through slot;

[0028] The damping support assembly 8 is provided with a damping assembly 9 in the vertical direction, and the two ends of the damping assembly 9 are connected with the hub support seat 5 and the steering frame 3 respectively and the connection positions are located on the side away from the hinge between the supporting shaft 4 and the steering frame 3.

[0029] The damping assembly 9 comprises a central vertical guide skeleton 901 and a damping block 902 sleeved outside the guide skeleton 901, the guide skeleton 901 is vertically fixed on the hub support seat 5 and the top position is movably matched with the steering frame 3, the top end and the bottom end of the damping block 902 are fixedly connected with the steering frame 3 and the hub support seat 5 respectively, the guide skeleton 901 ensures that the damping block 902 is in the vertical direction in the compression stress direction and improves the bending strength, the bottom position of the steering frame 3 is fixedly provided with a limiting block 10, when the compression amount of the damping assembly 9 reaches a certain limit, the limiting block 10 will be in contact with the damping support assembly 8, so that the support positioning is formed.

[0030] The damping support assembly 8 is symmetrically fixed with two limiting bolts 11 at the upper position of the hub support seat 5, and a limiting groove is formed in the corresponding position of the hub support seat 5, so as to limit the left and right inclination degree of the steering frame 3.

[0031] Further, a spiral groove 401 is formed in the outer periphery of the working surface of the supporting shaft 4, and the traditional center oil hole is cancelled, so that the overall lubrication of the shaft is more smooth, the strength of the whole supporting shaft is strengthened, and the carrying capacity is increased.

[0032] Further, the sleeve 6 adopts a JFB type graphite copper sleeve with a flange, which has the advantages of self-lubrication, high carrying capacity, wear resistance, high temperature resistance, corrosion resistance, low friction coefficient and the like, is more convenient and perfect, has high working efficiency and reduces maintenance cost.

[0033] Further, the damping block 902 uses SBR high polymerization degree rubber, which can better meet the use requirements of 5-10t three-point vehicles and traction vehicles. The performance indexes are as follows: 1. input 800Kg load, compression amount ≤25mm; 2. tensile strength: 14~19N / mm; 3. elongation at break: 70~90%; 4. impact resilience: 25~40%; 5. tear strength: 9~12N / mm; 6. wear resistance: 165~190mm; 7. good low-temperature flexibility: good damping effect at-30℃~-100℃.

[0034] The working principle of the utility model is as follows:

[0035] When the vehicle encounters complex or uneven road surface, the wheel hub support seat 5 will rotate with the support shaft 4, so that the center of the tire is always kept at the same height, achieving the effect of shock absorption. When the amplitude of the road surface fluctuation is too large, that is, when the rotation of the swing support shaft exceeds a certain angle (set to 10° in this embodiment), the limiting bolt 11 on the shock absorbing bracket assembly 8 will abut against the limiting slot of the wheel hub support seat 5, avoiding vehicle rollover;

[0036] When carrying goods, the shock absorbing assembly 9 is subjected to the reaction force F1 of the tire and the force F2 of the weight of the vehicle body and the goods, and reaches balance, the force F2 makes the support shaft 4 swing around the steering frame 3, thereby driving the shock absorbing block 902 to compress, the shock absorbing assembly 9 absorbs the impact and achieves the effect of buffering, so that the vehicle runs smoothly; when the compression amount of the shock absorbing block 902 reaches a certain value (set to 20mm in this embodiment), the limiting block 10 at the bottom of the steering frame 3 will abut against the top plate of the shock absorbing bracket assembly 8, thereby forming limiting and hard support, making the vehicle body more balanced and stable, and better able to bear the weight of the goods.

[0037] The above is only a preferred embodiment of the present application, and does not limit the present application in any form. Although the present application has been disclosed as above with a preferred embodiment, it is not intended to limit the present application. Any person skilled in the art can make some changes or modifications to the above disclosed technical content to obtain equivalent embodiments with equivalent changes, without departing from the technical solution of the present application. Any simple modification, equivalent change and modification of the above embodiments made according to the technical essence of the present application still belong to the scope of the technical solution of the present application.

Claims

1. A three-pivot symmetrical steering mechanism with a shock absorbing mechanism, characterized by, The application relates to a steering bearing seat assembly (1) which is provided below with a rotating turntable (2) driven by a motor, the bottom of the turntable (2) is fixedly provided with a steering rack (3), the steering rack (3) is provided below with a hub support seat (5), the hub support seat (5) is symmetrically provided with hub shaft head assemblies (7) on both sides; the steering rack (3) and the hub support seat (5) are connected through a supporting shaft (4), one end of the supporting shaft (4) is hinged to the steering rack (3), and the other end penetrates through the hub support seat (5) and can rotate relative to the hub support seat (5). A damping bracket assembly (8) is arranged between the steering rack (3) and the hub support seat (5), a damping assembly (9) is vertically arranged on the damping bracket assembly (8), and the top and bottom of the damping assembly (9) are fixed to the steering rack (3) and the hub support seat (5) respectively.

2. A three-pivot symmetrical steering mechanism with a shock absorbing mechanism according to claim 1, characterized in that, A mounting through groove is formed in the middle of the hub support seat (5), one sleeve (6) is arranged at each end of the mounting through groove, the supporting shaft (4) penetrates through the mounting through groove and is arranged in the two sleeves (6), and the end of the supporting shaft (4) penetrating through the mounting through groove is axially limited through a nut.

3. A three-pivot symmetrical steering mechanism with a shock absorbing mechanism according to claim 2, characterized in that The sleeve (6) is a JFB type graphite copper sleeve with a flange.

4. The three-pivot symmetrical steering linkage with shock absorption mechanism according to claim 1, characterized in that, A spiral groove (401) is formed in the outer periphery of the working surface of the supporting shaft (4) and used as a lubricating oil flow channel.

5. The three-pivot symmetrical steering linkage with shock absorption mechanism according to claim 1, characterized in that, The damping assembly (9) comprises a central vertical guide skeleton (901) and a damping block (902) sleeved on the outer side of the guide skeleton (901), the guide skeleton (901) is vertically fixed on the hub support seat (5) and movably matched with the steering rack (3) at the top position, and the top end and the bottom end of the damping block (902) are fixedly connected with the steering rack (3) and the hub support seat (5) respectively.

6. A three-pivot symmetrical steering mechanism with a shock absorbing mechanism according to claim 5, characterized in that The damping block (902) is an SBR high-polymer rubber block.

7. A three-pivot symmetrical steering linkage with a shock absorbing mechanism according to claim 1, characterized in that, A limiting block (10) is fixed at the bottom position of the steering rack (3), the limiting block (10) is in contact with the top of the damping bracket assembly (8) to form limiting, and the compression amount of the damping assembly (9) is limited.

8. The three-pivot symmetrical steering linkage with shock absorption mechanism according to claim 1, characterized in that, Two limiting bolts (11) are symmetrically fixed at the upper position of the hub support seat (5), limiting grooves are formed at the corresponding positions of the hub support seat (5), the limiting bolts (11) are in limiting contact with the limiting grooves to limit the left and right inclination degrees of the steering rack (3).

9. A three-pivot symmetrical steering linkage with a shock absorbing mechanism according to claim 1, characterized in that, The symmetric center positions of the two hub shaft head assemblies (7) coincide with the central axes of the steering bearing seat assembly (1) and the turntable (2).

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