Supporting structure for improving lateral stability of vehicle

Abstract

The invention discloses a supporting structure for improving lateral stability of a vehicle, and relates to the technical field of vehicle chassis, the supporting structure comprises a U-shaped chassis mounting rack, a wheel is mounted at one end of a lateral suspension, one end of the lateral suspension movably extends into the U-shaped chassis mounting rack, and the end, extending into the U-shaped chassis mounting rack, of the lateral suspension extends upwards to form a buffer convex point; the buffering supporting frame is fixedly connected with the center of the bottom of the U-shaped chassis mounting frame through a first fixing rod, and a lateral buffering piece is fixedly arranged at the bottom of the U-shaped chassis mounting frame. The method is suitable for vehicle design needing high lateral stability and safety, through accurate design and structural optimization, the method jointly acts on a chassis and a lateral part of the vehicle, and the lateral stability and safety of the vehicle in the running process are effectively improved. The controllability, the safety and the riding comfort of the vehicle in the driving process can be remarkably improved.

Description

Technical Field

[0001] The invention relates to the technical field of vehicle chassis, and in particular to a supporting structure for improving the lateral stability of a vehicle. Background Art

[0002] In the modern automobile industry, the lateral stability and driving comfort of vehicles have always been key issues in design and development. With the increase in vehicle speed and the complexity of road conditions, vehicles are easily affected by lateral forces during driving, causing the body to tilt and roll, affecting driving safety and riding comfort. Especially when driving at high speeds or making sharp turns, lateral instability not only increases driving difficulty, but may also cause traffic accidents. Therefore, how to effectively improve the lateral stability of vehicles and reduce lateral impact and vibration has become an urgent problem for automobile manufacturers.

[0003] Traditional vehicle suspension systems mainly use springs and shock absorbers to buffer vertical impacts, but their ability to cope with lateral forces is limited, and they are prone to roll when the vehicle turns quickly or encounters crosswinds. Although there are some solutions in the prior art that improve lateral stability by adding lateral stabilizer bars or improving suspension structures, these solutions are often complex in structure, expensive, and not ideal in practical applications.

[0004] In order to address the limitations of the prior art in improving the lateral stability of a vehicle, the present invention proposes a support structure for improving the lateral stability of a vehicle, aiming to achieve improved stability and shock absorption performance by optimizing the structural design, and effectively improve the lateral stability and safety of the vehicle during driving. Summary of the invention

[0005] 1. Technical issues to be resolved In view of the deficiencies of the prior art, the present invention provides a support structure for improving the lateral stability of a vehicle to solve the problems raised in the above background technology.

[0006] (II) Technical solution To achieve the above objectives, the present invention is implemented through the following technical solutions: comprising: a U-shaped chassis mounting frame, a wheel is installed at one end of the lateral suspension, one end of the lateral suspension movably extends into the U-shaped chassis mounting frame, and one end of the lateral suspension extending into the U-shaped chassis mounting frame extends upward to form a buffering protrusion, a buffering support frame is fixedly connected to the bottom center of the U-shaped chassis mounting frame through a fixing rod, and a lateral buffer is fixedly provided at the bottom of the U-shaped chassis mounting frame.

[0007] Preferably, both ends of the buffer support frame are respectively fixedly connected to the U-shaped ends of the U-shaped chassis mounting frame, one end of the buffer rod is movably connected to the lateral suspension, and the other end of the buffer rod is fixedly connected to the support plate.

[0008] Preferably, guide grooves are provided on the sides of the U-shaped ends of the U-shaped chassis mounting frame that are close to each other.

[0009] Preferably, both ends of the stabilizing frame are movably arranged in the guide grooves, and two groups of movable grooves and an arc groove are opened in the stabilizing frame, and a plurality of groups of buffer springs are fixedly arranged between the support plate and the stabilizing frame.

[0010] Preferably, one end of the piston buffer rod is fixedly connected to the support plate, the other end of the piston buffer rod is movably arranged in the movable groove, and a buffer spring three is arranged between the bottom of the piston buffer rod and the bottom of the inner wall of the movable groove.

[0011] Preferably, one end of the second connecting rod is movably connected to the bottom of the support plate, one end of the second connecting rod is movably extended into the arc groove, and the end of the second connecting rod extending into the arc groove is connected to the inner wall of the arc groove through a second buffer spring.

[0012] Preferably, a dynamic stabilization component is installed at the bottom of the stabilization frame, a slide groove is provided in the lateral buffer, the piston block is movably arranged in the slide groove, and the lateral buffer extends from the top of the piston block, one end of the third connecting rod is movably connected to the bottom of the stabilization frame, and the other end of the third connecting rod is movably connected to the top of the piston block, the lateral damping member is installed in the slide groove, and the fixed end of the lateral damping member is fixedly connected to the inner wall of the lateral buffer, and the output end of the lateral damping member is fixedly connected to the piston block.

[0013] Preferably, the dynamic stabilization component includes: a rubber pad, which is fixed at the bottom center of the stabilization frame, and a plurality of groups of inclined support legs 1 are fixed at the bottom of the rubber pad, and each group of inclined support legs 1 is connected to the anti-impact part through the same buffer spring 5, and a plurality of groups of inclined support legs 2 are symmetrically arranged with respect to the plurality of groups of inclined support legs 1 up and down, and each group of inclined support legs 2 is connected to the anti-impact part through the same buffer spring 6.

[0014] Preferably, identical telescopic damping parts are provided at the four top corners of the bottom of the rubber pad, and each set of telescopic damping parts is sleeved with an inflatable spring, two sets of pressure pumps are symmetrically fixed at the bottom of the rubber pad, and each set of pressure pumps is connected to the inflatable spring through the same air pipe.

[0015] Preferably, the U-shaped fixing piece is fixedly arranged at the bottom of the rubber pad, and the two groups of fourth connecting rods are respectively movably connected to the U-shaped ends of the U-shaped fixing piece, one ends of the two groups of fourth connecting rods are connected through the fixing plate, and the other ends of the two groups of fourth connecting rods are connected through the guide column, the pressure plate is fixedly connected to the fixing plate, and the pressure plate and the pressure pump are located on the same vertical axis, one end of the dynamic adjusting piece is movably provided with a rotating shaft, and the dynamic adjusting piece is rotatably connected to the rubber pad through the rotating shaft, the other end of the dynamic adjusting piece is hinged to the supporting abutment piece, the same limiting grooves are opened on both sides of the dynamic adjusting piece, and the guide column is movably arranged in the limiting groove, and the two groups of dynamic adjusting pieces are connected through a buffer spring seven.

[0016] Compared with the prior art, the present invention has the following beneficial effects: 1. Improve lateral stability: The lateral stability of the vehicle is significantly improved through various structural designs such as the U-shaped chassis mounting frame, lateral suspension, buffer support frame, dynamic stability components, etc. Especially when the vehicle is turning or subjected to lateral force, it can effectively reduce tilt and roll, ensuring smooth and safe driving.

[0017] 2. Effective cushioning and shock absorption: The multi-level buffer structure, including buffer springs, slides, piston blocks, etc., can effectively absorb and disperse lateral impact and vibration, improving the driving comfort of the vehicle. The combination of rubber pads, telescopic damping parts and gas springs further enhances the shock absorption effect.

[0018] 3. Flexible adjustment: The design of dynamic stabilization components and multiple groups of buffer springs allows the structure to be adjusted in real time according to the different stress conditions and driving conditions of the vehicle. Through structures such as limit slots, guide columns, and dynamic adjustment parts, it ensures stability under various road surfaces and driving conditions.

[0019] 4. Enhanced security: The trapezoidal structure design with multiple sets of diagonal braces and impact-resistant parts improves the vehicle's support during lateral impacts and enhances the stability and durability of the overall structure. The linkage design of the pressure pump and the pressure plate enables dynamic adjustment of the inflatable spring through the air pipe, which improves the buffering and shock absorption effects and further ensures driving safety.

[0020] 5. Stable and durable structure: The close fit and reasonable arrangement of the components ensure the stability and durability of the overall structure. The design of guide grooves, movable grooves, arc grooves, etc. ensures the stability and smoothness of each component during movement, extending its service life.

[0021] 6. Improve driving experience: Through effective buffering and shock absorption design, the vibration and impact of the vehicle during driving are significantly reduced, and the riding comfort is improved. In particular, the design of dynamic adjustment components and multi-level support buffer structure can adapt to different driving conditions and road conditions, improving the overall driving experience.

[0022] In summary, this invention not only performs well in improving the lateral stability of the vehicle, but also greatly improves the safety and comfort of vehicle driving through flexible adjustment, effective buffering, stable structure and other designs, and has significant application value. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1It is a schematic diagram of the main structure of the present invention; Figure 2 It is an enlarged schematic diagram of the local structure of the present invention; Figure 3 For the present invention Figure 2 A schematic diagram of the structure enlargement in the middle; Figure 4 The structure of the dynamic stabilization component of the present invention is schematically shown. Figure 1 ; Figure 5 The structure of the dynamic stabilization component of the present invention is schematically shown. Figure 2 ; Figure 6 The structure of the dynamic stabilization component of the present invention is schematically shown. Figure 3 ; In the figure: 1. U-shaped chassis mounting frame; 2. lateral suspension; 3. wheel; 4. buffer bump; 5. fixed rod 1; 6. buffer rod 1; 7. buffer support frame; 8. support plate; 9. buffer spring 1; 10. arc groove; 11. second connecting rod; 12. buffer spring 2; 13. stabilizing frame; 14. guide groove; 15. buffer spring 3; 16. piston buffer rod; 17. lateral damping member; 18. piston block; 19. third connecting rod; 20. buffer spring 4; 21. dynamic stabilizing component; 22. slide groove; 23. movable groove; 24. Lateral buffer; 25. Rubber pad; 26. Oblique support leg one; 27. Buffer spring five; 28. Anti-impact member; 29. ​​Telescopic damping member; 30. Inflatable spring; 31. Air pipe; 32. Pressure pump; 33. U-shaped fixing member; 34. Fixing plate; 35. Pressure plate; 36. Fourth connecting rod; 37. Guide column; 38. Oblique support leg two; 39. Buffer spring six; 40. Dynamic adjustment member; 41. Rotating shaft; 42. Limiting groove; 43. Support abutment member; 44. Buffer spring seven. DETAILED DESCRIPTION

[0024] In the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes, and do not specifically refer to the order or sequence, nor are they used to limit the present invention. They are only used to distinguish the protective components or operations described with the same technical terms, and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the technical solutions and technical features between the various embodiments can be combined with each other, but they must be based on the ability of ordinary technicians in the field to implement them. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0025] Example 1 See also Figure 1-3 An embodiment of the present invention includes: a U-shaped chassis mounting frame 1, a wheel 3 is installed at one end of a lateral suspension 2, one end of the lateral suspension 2 is movably extended into the U-shaped chassis mounting frame 1, and one end of the lateral suspension 2 extending into the U-shaped chassis mounting frame 1 extends upward to form a buffer convex point 4, a buffer support frame 7 is fixedly connected to the bottom center of the U-shaped chassis mounting frame 1 through a fixing rod 5, and a lateral buffer 24 is fixedly provided at the bottom of the U-shaped chassis mounting frame 1.

[0026] Preferably, both ends of the buffer support frame 7 are respectively fixedly connected to the U-shaped end of the U-shaped chassis mounting frame 1, one end of the buffer rod 6 is movably connected to the lateral suspension 2, and the other end of the buffer rod 6 is fixedly connected to the support plate 8.

[0027] Preferably, a guide groove 14 is provided on the side where the U-shaped ends of the U-shaped chassis mounting frame 1 are close to each other.

[0028] Preferably, both ends of the stabilizing frame 13 are movably disposed in the guide groove 14 , and two groups of movable grooves 23 and an arc groove 10 are opened in the stabilizing frame 13 .

[0029] Preferably, one end of the piston buffer rod 16 is fixedly connected to the support plate 8, and the other end of the piston buffer rod 16 is movably disposed in the movable groove 23, and a buffer spring 15 is provided between the bottom of the piston buffer rod 16 and the bottom of the inner wall of the movable groove 23.

[0030] Preferably, one end of the second connecting rod 11 is movably connected to the bottom of the support plate 8, and one end of the second connecting rod 11 is movably extended into the arc groove 10, and the end of the second connecting rod 11 extending into the arc groove 10 is connected to the inner wall of the arc groove 10 through a buffer spring 2 12.

[0031] Preferably, a plurality of groups of buffer springs 9 are fixedly provided between the support plate 8 and the stabilizing frame 13 .

[0032] Preferably, a dynamic stabilization component 21 is installed at the bottom of the stabilization frame 13 , a slide groove 22 is provided in the lateral buffer 24 , the piston block 18 is movably disposed in the slide groove 22 , and the lateral buffer 24 extends from the top of the piston block 18 .

[0033] Preferably, one end of the third connecting rod 19 is movably connected to the bottom of the stabilizing frame 13 , and the other end of the third connecting rod 19 is movably connected to the top of the piston block 18 .

[0034] Preferably, the lateral damping member 17 is installed in the slide groove 22 , and the fixed end of the lateral damping member 17 is fixedly connected to the inner wall of the lateral buffer member 24 , and the output end of the lateral damping member 17 is fixedly connected to the piston block 18 .

[0035] The working principle and beneficial effects of the above scheme are as follows: by arranging a U-shaped chassis mounting frame 1 on the vehicle chassis, the U-shaped chassis mounting frame 1 provides the basic support of the overall structure, and fixes and supports other components through its design, and the wheel 3 is connected to the U-shaped chassis mounting frame 1 through the lateral suspension 2. When the vehicle is bumped during movement, the wheel 3 has a certain buffer range through the distance between the buffer protrusion 4 on the lateral suspension 2 and the U-shaped chassis mounting frame 1. Such a design helps to balance and disperse the lateral force of the vehicle during turning or driving. When it exceeds the floating range limited by the lateral suspension 2, the buffer rod 6 will push the support plate 8 to move downward, thereby compressing several groups of buffer springs 9, while the two groups of piston buffer rods 16 slide along the movable groove 23 and the buffer spring three 15 compresses the suction This design effectively reduces the impact and vibration of the vehicle during driving. At the same time, the two groups of second connecting rods 11 slide along the arc groove 10, thereby providing additional support and adjustment for the support plate 8 to enhance the lateral stability of the vehicle, and the buffer spring 12 can slow down the sliding speed of the two groups of second connecting rods 11, thereby enhancing the stability of the structure, buffering and adjusting the vibration and impact of the vehicle during driving, and the guide groove 14 is located at the U-shaped end of the U-shaped chassis mounting frame. Through these guide grooves 14, when the stabilizing frame 13 is compressed, the two groups of third connecting rods 19 push the two groups of piston blocks 18 to move away from each other along the slide groove 22, thereby reducing the tilt and roll of the vehicle during turning through the lateral damping member 17 and the tension of the buffer spring 20, making driving smoother and safer.

[0036] The present invention effectively improves the lateral stability of the vehicle through the overall design and the close fit of various components, reduces the tilt and roll when turning, and makes driving smoother and safer. The dynamic stabilization component 21 is installed at the bottom of the stabilization frame 13. Through the design of the dynamic stabilization component 21 and the lateral buffer 24, the influence of the lateral force is effectively controlled and adjusted. Through the design of multiple groups of buffer springs and movable parts, the vibration and impact of the vehicle during driving are effectively reduced, and the riding comfort is improved. The vertical multi-level support buffer structure can be flexibly adjusted according to different driving conditions and road conditions, maintain the stability of the vehicle under different conditions, and ensure the stability and durability of the overall structure, which can effectively support and protect the vehicle for a long time.

[0037] In summary, the present invention can not only effectively improve the lateral stability and driving comfort of the vehicle, but also has the advantages of flexible adjustment, stable structure and durability, and is suitable for application in various vehicle designs that require high stability and safety.

[0038] Example 2 Based on Example 1, please refer to Figure 4-5The dynamic stabilization component 21 includes: a rubber pad 25, which is fixed at the bottom center of the stabilization frame 13, and a plurality of groups of oblique support legs 26 are fixed at the bottom of the rubber pad 25, and each group of oblique support legs 26 is connected to the anti-impact member 28 through the same buffer spring five 27, and a plurality of groups of oblique support legs 2 38 are symmetrically arranged with the plurality of groups of oblique support legs 26, and each group of oblique support legs 2 38 is connected to the anti-impact member 28 through the same buffer spring six 39.

[0039] Preferably, identical telescopic damping members 29 are provided at the four top corners of the bottom of the rubber pad 25, and each group of telescopic damping members 29 is sleeved with an inflatable spring 30, two groups of pressure pumps 32 are symmetrically fixed at the bottom of the rubber pad 25, and each group of pressure pumps 32 is connected to the inflatable spring 30 through the same air pipe 31.

[0040] Preferably, the U-shaped fixing member 33 is fixed at the bottom of the rubber pad 25, and the two groups of fourth connecting rods 36 are respectively movably connected to the U-shaped ends of the U-shaped fixing member 33, one end of the two groups of fourth connecting rods 36 are connected through the fixing plate 34, and the other ends of the two groups of fourth connecting rods 36 are connected through the guide column 37, the pressure plate 35 is fixedly connected to the fixing plate 34, and the pressure plate 35 and the pressure pump 32 are located on the same vertical axis, one end of the dynamic adjusting member 40 is movably provided with a rotating shaft 41, and the dynamic adjusting member 40 is rotatably connected to the rubber pad 25 through the rotating shaft 41, the other end of the dynamic adjusting member 40 is hinged to the supporting abutment 43, the same limiting grooves 42 are opened on both sides of the dynamic adjusting member 40, and the guide column 37 is movably arranged in the limiting groove 42, and the two groups of dynamic adjusting members 40 are connected through a buffer spring 7 44.

[0041] The working principle and beneficial effects of the above scheme are as follows: when the floating range limited by the stabilizing frame 13 is exceeded, the gap between the dynamic stabilizing assembly 21 and the lateral buffer 24 will gradually decrease until several groups of inclined support legs 2 38 abut against the top of the lateral buffer 24, thereby forming a supporting trapezoidal structure through the anti-impact member 28 and the inclined support legs 1 26 and buffer springs 5 ​​27 above it, and forming a multi-stage buffer structure through several groups of buffer springs 5 ​​27 and buffer springs 6 39 symmetrically arranged above and below. Such a design can disperse and absorb lateral impact force, improve the buffering effect, and further enhance the lateral stability of the vehicle.

[0042] At the same time, since the dynamic adjustment member 40 is tilted in the initial stage, when the rubber pad 25 descends, the supporting abutment member 43 will abut against the top of the lateral buffer member 24 and push the dynamic adjustment member 40 to rotate around the rotating shaft 41. At the same time, the buffer spring 7 44 is compressed to buffer the lateral pressure. At this time, the guide column 37 slides along the limiting groove 42 and can push the two sets of fourth connecting rods 36 to move along the U-shaped end of the U-shaped fixing member 33 in the direction away from the anti-impact member 28, thereby causing the pressure plate 35 to move synchronously and deflect slightly in the direction close to the top of the rubber pad 25, and as shown in FIG. Figure 5 As shown in the figure, the pressure plate 35 is stepped on one side close to the rubber pad 25 and is displaced in the same vertical axis as the pressure pump 32, so the pressure plate 35 will gradually apply pressure to the pressure pump 32 according to the downward force, and realize dynamic adjustment of the gas spring 30 through the air pipe 31, thereby providing additional buffering and shock absorbing effects to the stabilizer frame 13 through several groups of telescopic damping members 29 and the gas spring 30, thereby enhancing the comfort and stability of the vehicle.

[0043] Through the above method, the vehicle's lateral stability requirements can be adjusted in real time according to the different lateral force conditions of the vehicle, so that the vehicle can better cope with lateral impacts and vibrations during driving, significantly improving the vehicle's lateral stability and overall comfort.

[0044] The above shows and describes the basic principles and main features of the present invention and the 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 to be protected. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. A support structure for improving the lateral stability of a vehicle, characterized in that: The invention comprises: a U-shaped chassis mounting frame (1), a lateral suspension (2) having a wheel (3) mounted on one end thereof, one end of the lateral suspension (2) movably extending into the U-shaped chassis mounting frame (1), and one end of the lateral suspension (2) extending into the U-shaped chassis mounting frame (1) extending upward to form a buffering protrusion (4), a buffering support frame (7) fixedly connected to the center of the bottom of the U-shaped chassis mounting frame (1) through a fixing rod (5), and a lateral buffering member (24) fixedly provided at the bottom of the U-shaped chassis mounting frame (1).

2. A support structure for improving the lateral stability of a vehicle according to claim 1, characterized in that: The two ends of the buffer support frame (7) are respectively fixedly connected to the U-shaped ends of the U-shaped chassis mounting frame (1), one end of the buffer rod (6) is movably connected to the lateral suspension (2), and the other end of the buffer rod (6) is fixedly connected to the support plate (8).

3. A support structure for improving the lateral stability of a vehicle according to claim 2, characterized in that: A guide groove (14) is provided on each side of the U-shaped ends of the U-shaped chassis mounting frame (1) that are close to each other.

4. The support structure for improving the lateral stability of a vehicle according to claim 3, characterized in that: The two ends of the stabilizing frame (13) are movably arranged in the guide groove (14), and two groups of movable grooves (23) and an arc groove (10) are provided in the stabilizing frame (13). A plurality of groups of buffer springs (9) are fixedly arranged between the support plate (8) and the stabilizing frame (13).

5. The support structure for improving the lateral stability of a vehicle according to claim 4, characterized in that: One end of the piston buffer rod (16) is fixedly connected to the support plate (8), the other end of the piston buffer rod (16) is movably disposed in the movable groove (23), and a buffer spring (15) is disposed between the bottom of the piston buffer rod (16) and the bottom of the inner wall of the movable groove (23).

6. The support structure for improving the lateral stability of a vehicle according to claim 5, characterized in that: One end of the second connecting rod (11) is movably connected to the bottom of the support plate (8), and one end of the second connecting rod (11) movably extends into the arc-shaped groove (10), and the end of the second connecting rod (11) extending into the arc-shaped groove (10) is connected to the inner wall of the arc-shaped groove (10) via a second buffer spring (12).

7. The support structure for improving the lateral stability of a vehicle according to claim 4, characterized in that: A dynamic stabilization component (21) is installed at the bottom of the stabilization frame (13); a slide groove (22) is provided in the lateral buffer (24); a piston block (18) is movably arranged in the slide groove (22); and the lateral buffer (24) extends from the top of the piston block (18); one end of the third connecting rod (19) is movably connected to the bottom of the stabilization frame (13); the other end of the third connecting rod (19) is movably connected to the top of the piston block (18); a lateral damping member (17) is installed in the slide groove (22); a fixed end of the lateral damping member (17) is fixedly connected to the inner wall of the lateral buffer (24); and an output end of the lateral damping member (17) is fixedly connected to the piston block (18).

8. The support structure for improving the lateral stability of a vehicle according to claim 7, characterized in that: The dynamic stabilization component (21) comprises: a rubber pad (25), the rubber pad (25) being fixedly arranged at the bottom center of the stabilization frame (13), a plurality of groups of inclined support legs (26) being fixedly arranged at the bottom of the rubber pad (25), and each group of inclined support legs (26) being connected to the anti-impact member (28) via the same buffer spring (27), a plurality of groups of inclined support legs (38) being symmetrically arranged above and below the plurality of groups of inclined support legs (26), and each group of inclined support legs (38) being connected to the anti-impact member (28) via the same buffer spring (39).

9. The support structure for improving the lateral stability of a vehicle according to claim 8, characterized in that: The four top corners of the bottom of the rubber pad (25) are all provided with identical telescopic damping members (29), and each set of telescopic damping members (29) is sleeved with an air spring (30). Two sets of pressure pumps (32) are symmetrically fixed on the bottom of the rubber pad (25), and each set of pressure pumps (32) is connected to the air spring (30) via the same air pipe (31).

10. The support structure for improving the lateral stability of a vehicle according to claim 9, characterized in that: The U-shaped fixing member (33) is fixedly arranged at the bottom of the rubber pad (25), and the two sets of fourth connecting rods (36) are respectively movably connected to the U-shaped ends of the U-shaped fixing member (33), one end of the two sets of fourth connecting rods (36) are connected via a fixing plate (34), and the other ends of the two sets of fourth connecting rods (36) are connected via a guide column (37), the pressure plate (35) is fixedly connected to the fixing plate (34), and the pressure plate (35) and the pressure pump (32) are located on the same vertical axis. A rotating shaft (41) is movably provided at one end of the dynamic adjustment member (40), and the dynamic adjustment member (40) is rotatably connected to the rubber pad (25) via the rotating shaft (41). The other end of the dynamic adjustment member (40) is hinged to the supporting abutment member (43). The dynamic adjustment member (40) is provided with identical limiting grooves (42) on both sides, and the guide column (37) is movably arranged in the limiting groove (42). The two sets of dynamic adjustment members (40) are connected via a buffer spring (44).

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