A shock absorption device

Abstract

A shock-absorbing device, comprising a cylinder block, a control valve, a hinge, a connecting rod, a pressing plate, a lateral spring, a baffle, a left port, a right port, a spring chamber, a left chamber, a right chamber, a partition plate, an upper bending portion, a lower bending portion, a first vertical spring, a second vertical spring, a piston rod, a piston plate, a first retaining piece, and a second retaining piece; the control valve includes a valve body, a plug, and an input shaft, the hinge is provided at the left end of the connecting rod, the pressing plate is sleeved on the connecting rod, the lateral spring is connected to the right side of the pressing plate, and the lateral spring is sleeved on the outer periphery of the connecting rod.

Description

Technical Field

[0001] The present invention relates to the field of unmanned carriers, and particularly to a shock absorption device. Background Art

[0002] With the progress of modern science and technology, unmanned equipment has been widely used in various fields. The present invention relates to a military multi-functional all-terrain unmanned carrier device for battlefield logistics support. The long-distance transportation of this device is achieved by a large vehicle. Limited by the internal space of the large vehicle and the size of the vehicle door, the overall size (length × width × height) of the unmanned vehicle is restricted. However, the off-road operation environment of the unmanned vehicle puts forward requirements for the off-road performance of the vehicle, resulting in that the wheel diameter cannot be too small, and the vehicle needs to climb a slope with a gradient of not less than 60%. Moreover, the unmanned carrier vehicle is small in size and also small in structural rigidity. Therefore, a certain shock absorption device is required.

[0003] In actual engineering practice, the following problems exist:

[0004] First, for conventional vehicles, common shock absorption springs include vertical and horizontal ones. However, for small unmanned vehicles, their size is relatively small. If multiple shock absorption devices are applied like ordinary vehicles, it conflicts with their design concept of being small and lightweight, and it is very cumbersome in actual application. Therefore, fewer spring shock absorption devices are needed to achieve a more comprehensive buffering effect.

[0005] Second, in the existing automotive shock absorption devices, it is common that the spring is sleeved on the column and both ends of the column are fixed. Due to the fixation at both ends, the spring will not be compressed too much, so less elastic potential energy of the spring is utilized, which is not conducive to shock absorption.

[0006] Third, in recent years, the concept of hydraulic springs has been proposed for shock absorption; individual patents use them for vehicle-mounted springs, but they are only single hydraulic springs without a structure combining a conventional spring and a hydraulic spring, and thus the advantages of both conventional springs and hydraulic springs cannot be utilized simultaneously.

[0007] Fourth, the existing spring seats are a single disc or support or cylinder, and it is difficult to apply such spring seats to a structure that simultaneously realizes horizontal buffering and vertical buffering.

[0008] Fifth, for the existing hydraulic springs, individual patents achieve functions through pistons, and at the same time, damping flow is achieved through through-holes provided on the pistons. However, this structure can only achieve passive spring damping effects; in some working scenarios, there is a situation where the shock absorption device is subjected to a continuous unidirectional force, such as when the motor drives the outrigger to rotate; at this time, the pressure maintaining function cannot be achieved, and the damping holes on the piston will hinder the realization of pressure maintaining.

[0009] VI. The throttle valve in the prior art achieves damping through a small hole. However, the size of the damping small hole of the throttle valve is too small, and the prior art generally does not actively control the throttle valve because the sizes of the active driving device and the valve core are not adapted to the size of the damping small hole. This results in the inability to actively control the opening and closing of the throttle valve, and the inability to close means that the pressure-holding function mentioned above cannot be achieved. Summary of the Invention

[0010] To overcome the above problems, the present invention proposes a solution to simultaneously solve the above-mentioned multiple problems.

[0011] The technical solution adopted by the present invention to solve its technical problems is: a shock-absorbing device, including a cylinder block, a control valve, a hinge, a connecting rod, a pressing plate, a transverse spring, a baffle, a left port, a right port, a spring chamber, a left chamber, a right chamber, a partition plate, an upper bending part, a lower bending part, a first vertical spring, a second vertical spring, a piston rod, a piston plate, a first retaining piece, and a second retaining piece; the control valve includes a valve body, a plug, and an input shaft.

[0012] The hinge is provided at the left end of the connecting rod, the pressing plate is sleeved on the connecting rod, the transverse spring is connected to the right side of the pressing plate, the transverse spring is sleeved on the outer periphery of the connecting rod, the right end of the transverse spring is connected to the baffle, the baffle is fixed to the left end of the cylinder block, the connecting rod passes through the baffle and enters the cylinder block, the upper bending part is provided at the right end of the connecting rod, the upper bending part is connected to the lower bending part, the right end of the lower bending part is connected to the piston rod, and the right end of the piston rod is connected to the piston plate.

[0013] The partition plate is provided in the cylinder block, the piston rod passes through the partition plate, the first vertical spring is accommodated in the upper bending part, the lower end of the first vertical spring is connected to the inner wall of the cylinder block, the second vertical spring is accommodated in the lower bending part, the upper end of the second vertical spring is connected to the inner wall of the cylinder block, the first retaining piece is integrally provided below the connecting rod, the first retaining piece laterally restricts the first vertical spring, the second retaining piece is integrally provided above the piston rod, and the second retaining piece laterally restricts the second vertical spring.

[0014] A spring chamber is formed at the left end of the partition plate inside the cylinder block. The left chamber is formed between the piston plate and the partition plate, and the right chamber is formed between the piston plate and the right wall of the cylinder block. The left port is connected to the left chamber, and the right port is connected to the right chamber. A pipeline is provided between the left port and the right port, and the pipeline is located outside the cylinder block. The control valve controls the on / off of the pipeline. A left channel, a right channel, an upper left arc hole, a lower left arc hole, an upper right arc hole, and a lower right arc hole are provided in the valve body. An upper damping hole and a lower damping hole are provided in the plug. In the open state of the control valve, the left channel, the upper left arc hole, the upper damping hole, the upper right arc hole, and the right channel are connected in sequence, and the left channel, the lower left arc hole, the lower damping hole, the lower right arc hole, and the right channel are connected in sequence.

[0015] Preferably, the input shaft drives the plug to rotate.

[0016] Preferably, the motor drives the input shaft to rotate.

[0017] Preferably, a support is connected to the right end of the cylinder block.

[0018] Preferably, an inner hole is provided on the partition plate to accommodate the piston rod.

[0019] Preferably, a sealing ring is provided on the inner wall of the inner hole.

[0020] Preferably, the cylinder block is square.

[0021] Preferably, the cylinder block is circular.

[0022] Preferably, the diameter of the baffle is larger than the diameter of the cylinder block.

[0023] Preferably, the diameter of the left channel is larger than the diameter of the upper damping hole.

[0024] The beneficial effects of the present invention are as follows:

[0025] First, in response to the first point raised in the background art, horizontal buffering is achieved through the horizontal spring and the horizontal hydraulic cylinder, and vertical buffering is achieved through the vertical spring inside the cylinder. Thus, the buffering performance is more comprehensively realized in two dimensions within one module.

[0026] Second, in response to the second point raised in the background art, one end of the connecting rod is the piston end and the other end is the hinge end, and both ends are movable ends. Therefore, relatively speaking, it has a more flexible constraint, and a more flexible constraint is beneficial for utilizing elastic potential energy.

[0027] Third, in response to the third point raised in the background art, three shock-absorbing sections are provided on one connecting rod, namely the horizontal spring shock-absorbing section, the vertical spring shock-absorbing section, and the hydraulic piston shock-absorbing section, so as to better utilize the performance of springs made of different materials.

[0028] IV. Regarding the fourth point raised in the background art, a bent portion is provided on the connecting rod, and a spring is accommodated in the bent portion, so that a part of the connecting rod is used as a spring seat, and a retaining piece is provided on the connecting rod to wrap and accommodate and restrain the spring.

[0029] V. Regarding the fifth point raised in the background art, the complete piston plate is retained, and damping holes are not provided on the piston plate. Instead, pipes are provided outside the hydraulic cylinder to communicate with the chambers on both sides of the piston plate respectively, and an active control valve is provided in the pipes. When the active control valve is closed, the chambers on both sides of the piston plate are not communicated, and pressure holding can be achieved. When the active valve is opened, the chambers on both sides of the piston plate are communicated, and flow damping buffering can be achieved.

[0030] VI. Regarding the sixth point raised in the background art, the conventional active valve is used as a throttle valve to achieve active control and throttling at the same time. The flow path formed by the double-arc channels provided on the valve body and the double damping holes on the plug is used to achieve damping, and a conventional drive source such as a motor is used for active control. The reason for not directly drilling small holes on the plug to achieve damping is that the damping distance is too short in this way and effective damping cannot be achieved, while the combination of multiple arc channels and damping holes can achieve a sufficient damping distance.

[0031] Note: The above designs are not in any particular order, and each one makes the present invention different and significantly improved compared with the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The present invention will be further described below in conjunction with the drawings and embodiments.

[0033] Figure 1 It is a schematic diagram of the whole vehicle of the present invention.

[0034] Figure 2 It is a structural diagram of the outrigger rotating device of the present invention.

[0035] Figure 3 It is a schematic diagram of the shock absorber device connected to the outrigger rotating device of the present invention.

[0036] Figure 4 It is a schematic diagram of the internal structure of the hydraulic cylinder of the present invention.

[0037] Figure 5 It is a cross-sectional view of the control valve of the present invention

[0038] In the figure, the reference numerals are as follows:

[0039] 1. Vehicle body, 2. Wheel motor, 3. Outrigger, 4. Rotating motor, 5. Slewing mechanism, 6. Rotating shaft, 7. Hinge, 8. Cylinder block, 9. Control valve, 10. Support, 11. Support wheel, 12. Travel unit, 13. Wheel, 14. Worm gear, 15. Worm, 16. Rotary rod, 17. Connecting rod, 18. Pressure plate, 19. Lateral spring, 20. Baffle, 21. Left port, 22. Right port, 23. Spring chamber, 24. Left chamber, 25. Right chamber, 26. Partition, 27. Upper bent portion, 28. Lower bent portion, 29. First vertical spring, 30. Second vertical spring, 31. Piston rod, 32. Piston plate, 33. First retaining piece, 34. Second retaining piece, 35. Valve body, 36. Plug, 37. Input shaft, 38. Left channel, 39. Right channel, 40. Upper left arc hole, 41. Lower left arc hole, 42. Upper right arc hole, 43. Lower right arc hole, 44. Upper damping hole, 45. Lower damping hole, 46. Hinge. Detailed implementation mode

[0040] As shown in the figure: A shock absorption device includes a cylinder block, a control valve, a hinge, a connecting rod, a pressure plate, a lateral spring, a baffle, a left port, a right port, a spring chamber, a left chamber, a right chamber, a partition, an upper bent portion, a lower bent portion, a first vertical spring, a second vertical spring, a piston rod, a piston plate, a first retaining piece, and a second retaining piece; The control valve includes a valve body, a plug, and an input shaft;

[0041] The hinge is provided at the left end of the connecting rod, the pressure plate is sleeved on the connecting rod, the lateral spring is connected to the right side of the pressure plate, the lateral spring is sleeved on the outer periphery of the connecting rod, the right end of the lateral spring is connected to the baffle, the baffle is fixed to the left end of the cylinder block, the connecting rod passes through the baffle and enters the cylinder block, the upper bent portion is provided at the right end of the connecting rod, the upper bent portion is connected to the lower bent portion, the right end of the lower bent portion is connected to the piston rod, and the right end of the piston rod is connected to the piston plate;

[0042] The partition is provided in the cylinder block, the piston rod passes through the partition, the first vertical spring is accommodated in the upper bent portion, the lower end of the first vertical spring is connected to the inner wall of the cylinder block, the second vertical spring is accommodated in the lower bent portion, the upper end of the second vertical spring is connected to the inner wall of the cylinder block, the first retaining piece is integrally provided below the connecting rod, the first retaining piece laterally restricts the first vertical spring, the second retaining piece is integrally provided above the piston rod, and the second retaining piece laterally restricts the second vertical spring;

[0043] A spring chamber is formed at the left end of the partition plate inside the cylinder block. The left chamber is formed between the piston plate and the partition plate. The right chamber is formed between the piston plate and the right wall of the cylinder block. The left port is connected to the left chamber, and the right port is connected to the right chamber. A pipeline is arranged between the left port and the right port, and the pipeline is located outside the cylinder block. The control valve controls the on-off of the pipeline. A left channel, a right channel, an upper left arc hole, a lower left arc hole, an upper right arc hole, and a lower right arc hole are arranged in the valve body. An upper damping hole and a lower damping hole are arranged in the plug. In the open state of the control valve, the left channel, the upper left arc hole, the upper damping hole, the upper right arc hole, and the right channel are sequentially communicated, and the left channel, the lower left arc hole, the lower damping hole, the lower right arc hole, and the right channel are sequentially communicated.

[0044] As shown in the figure: The input shaft drives the rotation of the plug. The motor drives the rotation of the input shaft. A support is connected to the right end of the cylinder block. An inner hole is arranged on the partition plate to accommodate the piston rod. A sealing ring is arranged on the inner wall of the inner hole. The cylinder block is square. The cylinder block is circular. The diameter of the baffle is larger than the diameter of the cylinder block. The diameter of the left channel is larger than the diameter of the upper damping hole.

[0045] The above detailed description is a specific description of the feasible embodiments of the present invention, and this embodiment is not intended to limit the patent scope of the present invention. Any equivalent implementation or modification without departing from the present invention should be included in the patent scope of this case.

Claims

1. A shock-absorbing device, characterized in that: It includes a cylinder block, a control valve, a hinge, a connecting rod, a pressing plate, a lateral spring, a baffle, a left port, a right port, a spring chamber, a left chamber, a right chamber, a partition, an upper bent portion, a lower bent portion, a first vertical spring, a second vertical spring, a piston rod, a piston plate, a first retaining piece, and a second retaining piece; the control valve includes a valve body, a plug, and an input shaft; The hinge is provided at the left end of the connecting rod, the pressing plate is sleeved on the connecting rod, the lateral spring is connected to the right side of the pressing plate, the lateral spring is sleeved on the outer periphery of the connecting rod, the right end of the lateral spring is connected to the baffle, the baffle is fixed to the left end of the cylinder block, the connecting rod passes through the baffle and enters the cylinder block, the upper bent portion is provided at the right end of the connecting rod, the upper bent portion is connected to the lower bent portion, the right end of the lower bent portion is connected to the piston rod, and the right end of the piston rod is connected to the piston plate; The partition is provided in the cylinder block, the piston rod passes through the partition, the first vertical spring is accommodated in the upper bent portion, the lower end of the first vertical spring is connected to the inner wall of the cylinder block, the second vertical spring is accommodated in the lower bent portion, the upper end of the second vertical spring is connected to the inner wall of the cylinder block, the first retaining piece is integrally provided below the connecting rod, the first retaining piece laterally restricts the first vertical spring, the second retaining piece is integrally provided above the piston rod, and the second retaining piece laterally restricts the second vertical spring; A spring chamber is formed at the left end of the partition in the cylinder block, a left chamber is formed between the piston plate and the partition, a right chamber is formed between the piston plate and the right wall of the cylinder block, the left port is connected to the left chamber, the right port is connected to the right chamber, a pipeline is provided between the left port and the right port, the pipeline is located outside the cylinder block, the control valve controls the on-off of the pipeline, and a left channel, a right channel, an upper left arc hole, a lower left arc hole, an upper right arc hole, and a lower right arc hole are provided in the valve body; an upper damping hole and a lower damping hole are provided in the plug; in the open state of the control valve, the left channel, the upper left arc hole, the upper damping hole, the upper right arc hole, and the right channel are sequentially communicated, and the left channel, the lower left arc hole, the lower damping hole, the lower right arc hole, and the right channel are sequentially communicated.

2. The shock absorption device according to claim 1, characterized in that: The input shaft drives the plug to rotate.

3. The shock absorption device according to claim 2, characterized in that: The motor drives the input shaft to rotate.

4. A shock absorption device according to claim 1, characterized in that: A support is connected to the right end of the cylinder block.

5. The shock absorption device according to claim 1, characterized in that: An inner hole is provided in the partition to accommodate the piston rod.

6. The shock absorber device according to claim 5, characterized in that: A sealing ring is provided on the hole wall of the inner hole.

7. A shock absorber device according to claim 1, characterized in that: The cylinder block is square.

8. The shock absorption device according to claim 1, wherein: The cylinder block is circular.

9. The shock absorption device according to claim 8, wherein: The diameter of the baffle is larger than the diameter of the cylinder block.

10. A shock absorption device according to claim 1, characterized in that: The diameter of the left channel is larger than the diameter of the upper damping hole.

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