Semitrailer suspension damping device

Abstract

The utility model discloses a semitrailer suspension damping device, which relates to the technical field of damping devices and comprises a damping component and a positioning component. The damping assembly comprises a supporting plate, two fixing columns, two damping air bags, two fixing sleeves, two damping steel plates, a connecting sleeve and a mounting column, the fixing columns are fixedly arranged on the two sides of the bottom end of the supporting plate correspondingly, the damping air bags are fixedly arranged at the bottom ends of the two fixing columns correspondingly, and the fixing sleeves are fixedly arranged at the bottom ends of the two damping air bags correspondingly; a damping steel plate is fixedly arranged between the two fixing sleeves, and a connecting sleeve is fixedly arranged in the middle of the damping steel plate; the damping device has the advantages that the damping air bags are matched with the damping steel plates, vibration of the semitrailer in the transportation process can be effectively weakened and relieved, the damping effect of the damping device is better than that of a single damping device, vibration and impact of the semitrailer in the transportation process can be effectively relieved, the sense of safety of a driver is improved, and the service life of the semitrailer is prolonged. And meanwhile, the safety of vehicles and goods can be protected.

Description

Technical Field

[0001] The utility model relates to a suspension shock absorbing device, in particular to a suspension shock absorbing device for a semitrailer, and belongs to the technical field of shock absorbing devices. Background Art

[0002] A semi-trailer is a trailer with an axle placed behind the center of gravity of the vehicle and equipped with a coupling device that can transmit horizontal and vertical forces to the tractor. The semi-trailer suspension shock absorber is a device used to reduce vibration and impact during the transportation of the semi-trailer. During transportation, the semi-trailer often experiences uneven ground and bumps. If there is no effective shock absorber, it will cause damage to the vehicle and cargo, and also bring insecurity to the driver. Therefore, a semi-trailer suspension shock absorber is needed;

[0003] Among them, the "semi-trailer suspension shock-absorbing device" disclosed in the application number "CN202022489207.3" is also an increasingly mature technology, comprising two wheels arranged on the ground, connecting plates are rotatably connected on the relative inner walls of the two wheels, and a fixed plate is provided on one side of the two connecting plates, and two transmission plates are rotatably connected between the connecting plate and the fixed plate. The two transmission plates are symmetrically arranged, and a fixed block is fixedly connected to the connecting plate. A first shock-absorbing mechanism for lateral shock absorption is provided on the fixed block, and a limiting block is fixedly connected to the side wall of the fixing plate. A second shock-absorbing mechanism for vertical shock absorption is provided between the limiting block and the lower end transmission plate, and a buffer mechanism for alleviating impact is provided in the second shock-absorbing mechanism. The utility model has a reasonable structure, which can not only perform shock absorption in the vertical direction of the semi-trailer, but also achieve shock absorption in the horizontal direction;

[0004] However, the above method still has the following defects in actual use: the shock-absorbing structure of the device is relatively simple, and the shock-absorbing effect needs to be improved due to the small bearing capacity of the spring, and a good dust-proof structure is not provided. Utility Model Content

[0005] The utility model aims to provide a semi-trailer suspension shock absorbing device to solve the problem that the shock absorbing structure of the device proposed in the above background technology is relatively simple and the shock absorbing effect needs to be improved due to the small bearing capacity of the spring.

[0006] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a semi-trailer suspension shock-absorbing device, comprising a shock-absorbing assembly and a positioning assembly; the shock-absorbing assembly comprises a support plate, two fixing columns, two shock-absorbing airbags, two fixing sleeves, two shock-absorbing steel plates, a connecting sleeve and a mounting column, both sides of the bottom end of the support plate are fixedly provided with fixing columns, the bottom ends of the two fixing columns are fixedly provided with shock-absorbing airbags, the bottom ends of the two shock-absorbing airbags are fixedly provided with fixing sleeves, a shock-absorbing steel plate is fixedly provided between the two fixing sleeves, and the middle of the shock-absorbing steel plate A connecting sleeve is fixedly arranged, a mounting column is fixedly arranged at the bottom end of the connecting sleeve, and an axle tube is fixedly arranged at the bottom of the mounting column; the positioning assembly includes two connecting columns, two positioning columns, two positioning sleeves and two bellows, the two connecting columns are respectively fixedly arranged on both sides of the middle part of the support plate, the bottom ends of the two connecting columns are fixedly arranged with positioning columns, the two positioning sleeves are respectively fixedly arranged on both sides of the connecting sleeve, the interiors of the two positioning sleeves are respectively slidably connected to the surfaces of the two positioning columns, and the tops of the two positioning columns are respectively sleeved with bellows.

[0007] As a preferred technical solution of the utility model, the bottom ends of the two positioning posts are fixedly provided with limit blocks;

[0008] As a preferred technical solution of the utility model, a first magnetic ring is fixedly provided on the top of each positioning post;

[0009] As a preferred technical solution of the utility model, a second magnetic ring is fixedly provided on the top of each positioning sleeve;

[0010] As a preferred technical solution of the utility model, metal rings are fixedly provided at both ends of each of the bellows;

[0011] As a preferred technical solution of the utility model, the metal ring is magnetically connected to the first magnetic ring and the second magnetic ring;

[0012] As a preferred technical solution of the utility model, a fixing plate is fixedly provided on the top end of the support plate, and fixing holes are provided at four corners of the fixing plate.

[0013] Compared with the related art, the semi-trailer suspension shock absorbing device provided by the utility model has the following beneficial effects:

[0014] 1. The combination of shock-absorbing airbags and shock-absorbing steel plates can effectively reduce the vibration of the semi-trailer during transportation. Its shock-absorbing effect is better than that of a single shock-absorbing device. It can effectively reduce the vibration and impact of the semi-trailer during transportation, improve the driver's sense of security, and also protect the safety of the vehicle and cargo;

[0015] 2. In order to reduce the adhesion of foreign matter such as road dust to the surface of the positioning column during the transportation of the semi-trailer, dust and other foreign matter are blocked by a bellows. At the same time, the two ends of the bellows are magnetically connected to the first magnetic ring and the second magnetic ring through metal rings, which facilitates the free expansion and contraction of the bellows while having good sealing performance. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the utility model;

[0017] Figure 2 It is a front structural schematic diagram of the utility model;

[0018] Figure 3 It is a schematic diagram of the cross-sectional structure of the utility model;

[0019] Figure 4 It is an enlarged structural schematic diagram of the positioning component of the utility model.

[0020] In the figure: 1. shock absorbing assembly; 11. support plate; 111. fixing plate; 112. fixing hole; 12. fixing column; 13. shock absorbing airbag; 14. fixing sleeve; 15. shock absorbing steel plate; 16. connecting sleeve; 161. mounting column; 17. shaft tube; 2. positioning assembly; 21. connecting column; 211. first magnetic ring; 22. positioning column; 23. positioning sleeve; 231. second magnetic ring; 24. limit block; 25. bellows; 251. metal ring. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] See also Figure 1-4 , the utility model provides a semi-trailer suspension shock absorbing device, including a shock absorbing component 1 and a positioning component 2;

[0023] The shock absorbing assembly 1 comprises a support plate 11, two fixing columns 12, two shock absorbing airbags 13, two fixing sleeves 14, two shock absorbing steel plates 15, a connecting sleeve 16 and a mounting column 161. The fixing columns 12 are fixedly arranged on both sides of the bottom end of the support plate 11, the shock absorbing airbags 13 are fixedly arranged on the bottom ends of the two fixing columns 12, the fixing sleeves 14 are fixedly arranged on the bottom ends of the two shock absorbing airbags 13, the shock absorbing steel plate 15 is fixedly arranged between the two fixing sleeves 14, the connecting sleeve 16 is fixedly arranged in the middle of the shock absorbing steel plate 15, the mounting column 161 is fixedly arranged at the bottom end of the connecting sleeve 16, and the bottom of the mounting column 161 is fixedly arranged with an axle tube 17, which is connected to the axle through the cooperation of external connecting parts;

[0024] A fixing plate 111 is fixedly provided at the top of the support plate 11, and fixing holes 112 are provided at the four corners of the fixing plate 111 for installation;

[0025] Specifically, firstly, the shock-absorbing airbag 13 should have good shock-absorbing and stabilizing properties, which can effectively reduce the vibration of the semi-trailer during transportation. The shock-absorbing airbag 13 is connected to the shock-absorbing steel plate 15 through the fixing sleeve 14, which can effectively reduce the vibration of the semi-trailer during transportation. Its shock-absorbing effect is better than that of using a single shock-absorbing device.

[0026] The positioning assembly 2 includes two connecting columns 21, two positioning columns 22, two positioning sleeves 23 and two bellows 25. The two connecting columns 21 are fixedly arranged on both sides of the middle of the support plate 11, and the bottom ends of the two connecting columns 21 are fixedly arranged with positioning columns 22. The two positioning sleeves 23 are fixedly arranged on both sides of the connecting sleeve 16, and the interiors of the two positioning sleeves 23 are respectively slidably connected with the surfaces of the two positioning columns 22. The tops of the two positioning columns 22 are sleeved with bellows 25.

[0027] The bottom ends of the two positioning posts 22 are fixedly provided with limit blocks 24 to limit the positioning sleeve 23 from being separated from the positioning posts 22;

[0028] A first magnetic ring 211 is fixedly disposed on the top of each positioning column 22;

[0029] A second magnetic ring 231 is fixedly disposed on the top of each positioning sleeve 23;

[0030] Metal rings 251 are fixedly provided at both ends of each bellows 25;

[0031] The metal ring 251 is magnetically connected to the first magnetic ring 211 and the second magnetic ring 231;

[0032] Specifically, first, the limit block 24 can limit the positioning sleeve 23 from separating from the positioning column 22, which has a protective effect, and blocks dust and other foreign matter through the bellows 25. At the same time, the two ends of the bellows 25 are magnetically connected to the first magnetic ring 211 and the second magnetic ring 231 through a metal ring 251, which facilitates the free expansion and contraction of the bellows 25 while having better sealing.

[0033] When in use, firstly install the semi-trailer suspension shock-absorbing device to a suitable position of the frame through the fixing hole 112 on the surface of the fixing plate 111. The shock-absorbing airbag 13 should have good shock-absorbing and stability performance, and can effectively reduce the vibration of the semi-trailer during transportation. The shock-absorbing airbag 13 is connected to the shock-absorbing steel plate 15 through the fixing sleeve 14, which can effectively reduce the vibration of the semi-trailer during transportation. Its shock-absorbing effect is better than that of a single shock-absorbing device. At the same time, the shock-absorbing airbag 13 has the advantages of good stability, low noise, good vibration isolation effect, and long service life. In order to increase the stability of the upward and downward movement of the connecting sleeve 16 and the mounting column 161, the connecting sleeve 16 moves up and down on the surface of the positioning column 22 through the positioning sleeve 23 during the upward and downward movement due to bumps, thereby improving the stability during the movement;

[0034] In order to reduce the adhesion of foreign matter such as road dust to the surface of the positioning column 22 during the transportation of the semi-trailer, thereby affecting the normal movement of the positioning sleeve 23, a movable bellows 25 is sleeved on the top of the positioning column 22 to block foreign matter such as dust. At the same time, the two ends of the bellows 25 are magnetically connected to the first magnetic ring 211 and the second magnetic ring 231 through a metal ring 251, so that the bellows 25 can be freely extended and retracted while having good sealing performance.

[0035] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A semi-trailer suspension shock absorbing device, characterized in that: include A shock absorbing assembly (1); the shock absorbing assembly (1) comprises a support plate (11), two fixing columns (12), two shock absorbing airbags (13), two fixing sleeves (14), two shock absorbing steel plates (15), a connecting sleeve (16) and a mounting column (161); fixing columns (12) are fixedly arranged on both sides of the bottom end of the support plate (11); shock absorbing airbags (13) are fixedly arranged on the bottom ends of the two fixing columns (12); fixing sleeves (14) are fixedly arranged on the bottom ends of the two shock absorbing airbags (13); a shock absorbing steel plate (15) is fixedly arranged between the two fixing sleeves (14); a connecting sleeve (16) is fixedly arranged in the middle of the shock absorbing steel plate (15); a mounting column (161) is fixedly arranged on the bottom end of the connecting sleeve (16); and a shaft tube (17) is fixedly arranged at the bottom of the mounting column (161); A positioning assembly (2); the positioning assembly (2) comprises two connecting columns (21), two positioning columns (22), two positioning sleeves (23) and two bellows (25); the two connecting columns (21) are respectively fixedly arranged on both sides of the middle of the support plate (11); the bottom ends of the two connecting columns (21) are fixedly arranged with positioning columns (22); the two positioning sleeves (23) are respectively fixedly arranged on both sides of the connecting sleeve (16); the interiors of the two positioning sleeves (23) are respectively slidably connected to the surfaces of the two positioning columns (22); and the tops of the two positioning columns (22) are respectively sleeved with bellows (25).

2. A semitrailer suspension shock absorbing device according to claim 1, characterized in that: Limiting blocks (24) are fixedly arranged at the bottom ends of the two positioning columns (22).

3. A semitrailer suspension shock absorbing device according to claim 1, characterized in that: A first magnetic ring (211) is fixedly disposed on the top end of each positioning column (22).

4. A semitrailer suspension shock absorbing device according to claim 1, characterized in that: A second magnetic ring (231) is fixedly disposed on the top end of each positioning sleeve (23).

5. A semitrailer suspension shock absorbing device according to claim 4, characterized in that: Metal rings (251) are fixedly provided at both ends of each of the bellows (25).

6. A semitrailer suspension shock absorbing device according to claim 5, characterized in that: The metal ring (251) is magnetically connected to the first magnetic ring (211) and the second magnetic ring (231).

7. A semitrailer suspension shock absorbing device according to claim 1, characterized in that: A fixing plate (111) is fixedly arranged at the top end of the support plate (11), and fixing holes (112) are provided at four corners of the fixing plate (111).

Images