A vibration damping and fixing device for high-voltage components of a pure electric mining truck

Abstract

This invention relates to a vibration damping and fixing device for high-voltage components of a pure electric mining truck, comprising an oil reservoir cylinder, a working cylinder, and a pneumatic cylinder. A first air exchange box and a second air exchange box are disposed on the outer side of the working cylinder. A vertical pipe is disposed on the right side of the first and second air exchange boxes, and U-shaped pipes are disposed at both ends of the vertical pipe. During the compression and extension strokes of this device, the throttling effect of each valve creates resistance to movement, converting vibration energy into heat energy of the oil and air, which is then dissipated, thus attenuating the vibration energy and achieving the effect of vibration damping. In addition, during the reciprocating sliding of the fourth piston, the air pressure balance of either the first or second air exchange box is maintained, while air is exchanged between the other two air exchange boxes. This air exchange accelerates the heat dissipation rate of the device and prevents the air temperature inside the device from becoming too high after long-term use, ensuring the stability of the device.

Description

Technical Field

[0001] This invention belongs to the field of shock absorption device technology, specifically relating to a shock absorption and fixing device for high-voltage components of a pure electric mining truck. Background Technology

[0002] To rapidly dampen vibrations from the chassis and body, and improve the smoothness and comfort of driving, vehicles are generally equipped with shock-absorbing and fixing devices. Mining trucks, which frequently travel on roads with complex conditions, experience a greater workload on their shock-absorbing and fixing devices. Therefore, compared to traditional vehicles, mining trucks require shock-absorbing and fixing devices with a heavier workload and higher performance requirements.

[0003] Most existing shock absorber fixing devices are hydraulic. They utilize the up-and-down movement of a piston within the device to cause oil within the device's cavity to flow back and forth through holes or other valves on the piston. The friction between the hole wall and the oil, as well as the internal friction between oil molecules, dampens the piston's stroke, converting vibration energy into oil heat energy, which is then dissipated into the atmosphere through the outer casing. To maintain the stability of the shock absorber fixing device, the oil reservoir is typically filled with nitrogen or air. However, due to the work done by air compression and its relatively low specific heat, air heats up rapidly, causing significant pressure fluctuations within the device. This can easily lead to substantial changes in the shock absorption performance of the device. Therefore, most existing technologies choose nitrogen instead of air. However, nitrogen has high production costs, and its slow heat dissipation makes it unsuitable for use in extremely harsh environments.

[0004] To address the shortcomings of existing technologies, it is necessary to improve existing technical solutions. Summary of the Invention

[0005] In view of this, the purpose of the present invention is to provide a vibration damping and fixing device for high-voltage components of a pure electric mining truck, so as to solve the above problems.

[0006] To achieve the above objectives, the technical solution adopted by the present invention is as follows: a vibration damping and fixing device for high-voltage components of a pure electric mining truck, comprising an oil storage cylinder, a working cylinder, and a pneumatic cylinder. The working cylinder is concentrically distributed within the oil storage cylinder. A compression valve and a compensation valve are provided at the lower end of the working cylinder. The upper end of the working cylinder is fixedly connected to the pneumatic cylinder. An air inlet and an exhaust port are provided near the upper and lower ends of the pneumatic cylinder. A first air exchange box and a second air exchange box are provided outside the working cylinder, with the first air exchange box located above the second air exchange box. A first air exchange cylinder and a second air exchange cylinder are alternately distributed between the first air exchange box, the second air exchange box, and the working cylinder. The upper end of the first air exchange cylinder communicates with the first air exchange box, and the upper end of the second air exchange cylinder communicates with the second air exchange box. The lower ends of both the first and second air exchange cylinders are fixedly connected to the upper end of the oil storage cylinder. A first piston is slidably connected within the first air exchange cylinder, and a first push rod is fixedly attached to the lower side of the first piston. A second piston is slidably connected within the second air exchange cylinder, along with the first push rod and the second push rod. The lower ends are inserted into the oil storage cylinder. A third piston is slidably connected inside the oil storage cylinder. The lower ends of the first push rod and the second push rod are in contact with the upper side of the third piston. A vertical pipe is provided on the right side of the first and second air exchange boxes. U-shaped pipes are provided at both the upper and lower ends of the vertical pipe. One end of the upper U-shaped pipe is connected to the upper end of the vertical pipe, and the other end is connected to the first air exchange box. One end of the lower U-shaped pipe is connected to the lower end of the vertical pipe, and the other end is connected to the second air exchange box. Two horizontal pipes are provided on the vertical pipe. The left ends of the two horizontal pipes are connected to the first air exchange box and the second air exchange box, respectively. The middle part of the horizontal pipe is connected to the vertical pipe. An adjusting rod is slidably connected inside the vertical pipe. The adjusting rod is provided with two contraction parts corresponding to the horizontal pipes. When the contraction part of the adjusting rod is located at the through part of the horizontal pipe, the horizontal pipe is connected to the outside. A sixth piston is fixed at both the upper and lower ends of the adjusting rod. A U-shaped pipe on the side corresponding to the sixth piston is slidably connected. An opening is provided in the middle of the two U-shaped pipes, and the openings in the middle of the two U-shaped pipes are connected to the two exhaust ports of the pneumatic cylinder through conduits, respectively.

[0007] A vertical pipe is provided on the right side of the first and second air exchange boxes. U-shaped pipes are provided at both the upper and lower ends of the vertical pipe. One end of the upper U-shaped pipe is connected to the upper end of the vertical pipe and the other end is connected to the first air exchange box. One end of the lower U-shaped pipe is connected to the lower end of the vertical pipe and the other end is connected to the second air exchange box. Two horizontal pipes are provided on the vertical pipe. The left ends of the two horizontal pipes are connected to the first and second air exchange boxes respectively. The middle part of the horizontal pipes is connected to the vertical pipe. An adjusting rod is slidably connected inside the vertical pipe. The adjusting rod is provided with two contraction parts corresponding to the horizontal pipes. When the contraction part of the adjusting rod is located at the through part of the horizontal pipe, the horizontal pipe is connected to the outside. A sixth piston is fixed at both the upper and lower ends of the adjusting rod. The U-shaped pipe on the side corresponding to the sixth piston is slidably connected. The middle part of the two U-shaped pipes is provided with an opening, and the opening in the middle part of the two U-shaped pipes is connected to the two exhaust ports of the air pressure cylinder through a conduit.

[0008] A fifth piston is slidably connected inside the working cylinder. An extension valve and a flow valve are provided on the fifth piston. A third push rod is fixed to the middle of the upper side of the fifth piston. The third push rod passes through the upper end of the working cylinder and the upper end of the pneumatic cylinder in sequence. A fourth piston is slidably connected inside the pneumatic cylinder. The fourth piston is fixedly connected to the third push rod.

[0009] Preferably, a lower fixing plate is fixed to the lower end of the oil storage cylinder, an upper fixing plate is fixed to the upper end of the third push rod, a return spring is sleeved on the third push rod, the upper end of the return spring is fixedly connected to the upper fixing plate, and the lower end of the return spring is fixedly connected to the upper end of the pneumatic cylinder.

[0010] Preferably, a one-way valve is installed in both the air inlet and the air outlet of the pneumatic cylinder, so that air enters the pneumatic cylinder in one direction from the air inlet and air in the pneumatic cylinder is discharged in one direction from the air outlet.

[0011] Preferably, both the upper end of the working cylinder and the upper end of the pneumatic cylinder are sealed with oil seals.

[0012] The beneficial effects of this invention are as follows: During the compression and extension strokes of this device, the throttling effect of each valve creates resistance to the movement, converting vibration energy into heat energy of the oil and air, which is then dissipated, thus attenuating the vibration energy and achieving the effect of vibration damping; In addition, during the compression and extension of the third push rod, the fourth piston slides up and down in the pneumatic cylinder. During the up and down sliding of the fourth piston, the air pressure balance of either the first or second air exchange box is maintained, while air is exchanged between the other two air exchange boxes. By alternately exchanging air between the first and second air exchange boxes, the heat dissipation rate of this device is accelerated, and the temperature of the air filled in the device after long-term use of the shock-absorbing fixing device is too high, thus ensuring the stability of this device. Attached Figure Description

[0013] Figure 1 This is a structural diagram of the main body of the present invention;

[0014] Figure 2 This is a diagram of the internal structure of the present invention;

[0015] Figure 3 For the present invention Figure 2 Cross-sectional view of section AA.

[0016] Figure 4 The internal structure of the vertical tube of this invention Figure 1 ;

[0017] Figure 5 The internal structure of the vertical tube of this invention Figure 2 .

[0018] Numbered in the diagram: 1. Oil reservoir cylinder; 2. Working cylinder; 3. Pneumatic cylinder; 301. Air inlet; 302. Exhaust port; 4. First air exchange box; 5. Second air exchange box; 6. First air exchange cylinder; 7. Second air exchange cylinder; 8. First piston; 9. First push rod; 10. Second piston; 11. Second push rod; 12. Third piston; 13. Fifth piston; 14. Third push rod; 15. Fourth piston; 16. Lower fixed plate; 17. Upper fixed plate; 18. Return spring; 19. Compression valve; 20. Compensation valve; 21. Extension valve; 22. Flow valve; 23. Vertical pipe; 24. U-shaped pipe; 25. Horizontal pipe; 26. Adjusting rod; 27. Sixth piston. Detailed Implementation

[0019] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments:

[0020] like Figure 1-5 As shown, a vibration damping and fixing device for high-voltage components of a pure electric mining truck includes an oil reservoir cylinder 1, a working cylinder 2, and a pneumatic cylinder 3. The working cylinder 2 is concentrically distributed within the oil reservoir cylinder 1. A compression valve 19 and a compensation valve 20 are installed at the lower end of the working cylinder 2. The upper end of the working cylinder 2 is fixedly connected to the pneumatic cylinder 3. An air inlet 301 and an exhaust port 302 are provided near the upper and lower ends of the pneumatic cylinder 3. A first air exchange box 4 and a second air exchange box 5 are arranged outside the working cylinder 2, with the first air exchange box 4 located above the second air exchange box 5. The first air exchange box 4, the second air exchange box 5, and the working cylinder 2 are alternately positioned. The system includes a first air exchange cylinder 6 and a second air exchange cylinder 7. The upper end of the first air exchange cylinder 6 is connected to the first air exchange box 4, and the upper end of the second air exchange cylinder 7 is connected to the second air exchange box 5. The lower ends of both the first air exchange cylinder 6 and the second air exchange cylinder 7 are fixedly connected to the upper end of the oil storage cylinder 1. A first piston 8 is slidably connected inside the first air exchange cylinder 6, and a first push rod 9 is fixedly attached to the lower side of the first piston 8. A second piston 10 is slidably connected inside the second air exchange cylinder 7. The lower ends of both the first push rod 9 and the second push rod 11 are inserted into the oil storage cylinder 1. A third piston 12 is slidably connected inside the oil storage cylinder 1, and the lower ends of both the first push rod 9 and the second push rod 11 are in contact with the upper side of the third piston 12.

[0021] In this embodiment, a vertical pipe 23 is provided on the right side of the first ventilation box 4 and the second ventilation box 5. U-shaped pipes 24 are provided at both the upper and lower ends of the vertical pipe 23. One end of the upper U-shaped pipe 24 is connected to the upper end of the vertical pipe 23, and the other end is connected to the first ventilation box 4. One end of the lower U-shaped pipe 24 is connected to the lower end of the vertical pipe 23, and the other end is connected to the second ventilation box 5. Two horizontal pipes 25 are provided on the vertical pipe 23. The left ends of the two horizontal pipes 25 are connected to the first ventilation box 4 and the second ventilation box 5, respectively. The middle section of the horizontal pipe 25... The vertical tube 23 is connected to the vertical tube 23, and an adjusting rod 26 is slidably connected inside the vertical tube 23. The adjusting rod 26 is provided with two contraction parts corresponding to the horizontal tube 25. When the contraction part of the adjusting rod 26 is located at the through part of the horizontal tube 25, the horizontal tube 25 is connected to the outside. The upper and lower ends of the adjusting rod 26 are fixed with a sixth piston 27. The U-shaped tube 24 on the corresponding side of the sixth piston 27 is slidably connected. The middle part of the two U-shaped tubes 24 is provided with an opening, and the opening in the middle part of the two U-shaped tubes 24 is connected to the two exhaust ports 302 of the pneumatic cylinder 3 through a conduit.

[0022] In this embodiment, a fifth piston 13 is slidably connected inside the working cylinder 2. An extension valve 21 and a flow valve 22 are provided on the fifth piston 13. A third push rod 14 is fixed to the middle of the upper side of the fifth piston 13. The third push rod 14 passes through the upper end of the working cylinder 2 and the upper end of the pneumatic cylinder 3 in sequence. A fourth piston 15 is slidably connected inside the pneumatic cylinder 3. The fourth piston 15 is fixedly connected to the third push rod 14.

[0023] In this embodiment, a lower fixing plate 16 is fixed to the lower end of the oil storage cylinder 1, an upper fixing plate 17 is fixed to the upper end of the third push rod 14, a return spring 18 is sleeved on the third push rod 14, the upper end of the return spring 18 is fixedly connected to the upper fixing plate 17, and the lower end of the return spring 18 is fixedly connected to the upper end of the pneumatic cylinder 3.

[0024] In this embodiment, a one-way valve is installed in both the air inlet 301 and the air outlet 302 of the pneumatic cylinder 3, so that air enters the pneumatic cylinder 3 from the air inlet 301 in one direction, and air in the pneumatic cylinder 3 is discharged from the air outlet 302 in one direction.

[0025] In this embodiment, the upper ends of the working cylinder 2 and the pneumatic cylinder 3 are both sealed with oil seals.

[0026] The working principle of this invention: The lower fixed plate 16 is fixedly connected to the pure electric mining truck, and the upper fixed plate 17 is fixedly connected to the high-voltage device. When vibration occurs, the device has two strokes: compression and extension. During the compression stroke, the third push rod 14 slides downwards, causing the fourth piston 15 and the fifth piston 13 to slide downwards. The lower chamber of the working cylinder 2 flows unidirectionally to the upper chamber through the flow valve 22. Additionally, because the third push rod 14 uses up the volume of the upper chamber of the working cylinder 2, a portion of the oil in the lower chamber of the working cylinder 2 opens the compression valve 19 and flows into the oil storage cylinder 1. This process is achieved through the throttling action of each valve. The downward movement creates resistance to the compression motion, causing the vibration energy to attenuate, thus damping the vibration. During the extension stroke, the third push rod 14 slides upward, driving the fourth piston 15 and the fifth piston 13 to slide upward. The volume of the upper chamber of the working cylinder 2 decreases, and the oil in the upper chamber flows unidirectionally to the lower chamber through the extension valve 21. In addition, because the third push rod 14 uses up the volume of the upper chamber of the working cylinder 2, the oil flowing into the upper chamber of the working cylinder 2 is insufficient to fill the increased volume of the lower chamber. The oil in the oil reservoir 1 pushes open the compensation valve 20 and flows into the lower chamber to replenish it. Under the throttling effect of each valve, this causes... The resistance of the stretching motion attenuates the vibration energy, thus damping the vibration. Additionally, under the same hydraulic pressure, the damping force generated during the stretching stroke is much greater than that during the compression stroke, resulting in a slower stretching speed compared to the compression speed. This allows for rapid energy absorption during compression and faster stretching back to the original length. Furthermore, during the compression and stretching process of the third push rod 14, the fourth piston 15 slides up and down within the pneumatic cylinder 3. When the fourth piston 15 slides upwards, outside air passes through the cylinder... Air enters the lower chamber of the pneumatic cylinder 3 through the intake port 301 near its lower end. Simultaneously, air in the upper chamber of the pneumatic cylinder 3 enters the upper U-shaped tube 24 via a conduit from the exhaust port 302 near its upper end. When the fourth piston 15 slides downwards, outside air enters the upper chamber of the pneumatic cylinder 3 through the intake port 301 near its upper end. At the same time, air in the lower chamber of the pneumatic cylinder 3 enters the lower U-shaped tube 24 via a conduit from the exhaust port 302 near its lower end. Figure 4 As shown, when air from the upper chamber of the pneumatic cylinder 3 enters the upper U-shaped tube 24, on the one hand, the air enters the first air exchange box 4, increasing the air pressure inside the first air exchange box 4. This air pressure pushes the first piston 8 downwards, causing the first push rod 9 to compress the third piston 12, which in turn compresses the oil in the oil reservoir 1, maintaining the oil pressure. On the other hand, the air pressure pushes the adjusting rod 26 downwards, and the contracted portion near the lower end of the adjusting rod 26 slides into the lower horizontal tube 25. At this time, the air in the second air exchange box 5 is discharged to the outside through the lower horizontal tube 25, thus expelling the air from the second air exchange box 5. Similarly... Figure 5As shown, when the air in the lower chamber of the pneumatic cylinder 3 enters the U-shaped tube 24 located below, on the one hand, the air enters the second air exchange box 5, increasing the air pressure in the second air exchange box 5. The air pressure in the second air exchange box 5 pushes the second piston 10 to slide downward, and through the second push rod 11, it squeezes the third piston 12, causing the third piston 12 to squeeze the oil in the oil storage cylinder 1 downward, maintaining the oil pressure. On the other hand, the air pressure pushes the adjusting rod 26 to slide upward. The contracted part of the adjusting rod 26 near the upper end slides into the horizontal tube 25 located above. At this time, the air in the first air exchange box 4 is discharged to the outside through the horizontal tube 25 located above, and the air in the first air exchange box 4 is discharged. That is, by using the reciprocating sliding of the fourth piston 15, the balance of air pressure in either the first air exchange box 4 or the second air exchange box 5 is maintained, and the other air exchange is given to the first air exchange box 4 and the second air exchange box 5. By alternately exchanging air for the first air exchange box 4 and the second air exchange box 5, the temperature of the shock absorption fixing device is prevented from becoming too high.

[0027] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A vibration damping and fixing device for high-voltage components of a pure electric mining truck, comprising an oil reservoir cylinder, a working cylinder, and a pneumatic cylinder, wherein the working cylinders are concentrically distributed within the oil reservoir cylinder, characterized in that: The lower end of the working cylinder is equipped with a compression valve and a compensation valve. The upper end of the working cylinder is fixedly connected to the pneumatic cylinder. The pneumatic cylinder has an air inlet and an exhaust port near both its upper and lower ends. A first air exchange box and a second air exchange box are located outside the working cylinder, with the first air exchange box positioned above the second air exchange box. A first air exchange cylinder and a second air exchange cylinder are alternately distributed between the first air exchange box, the second air exchange box, and the working cylinder. The upper end of the first air exchange cylinder is connected to the first air exchange box, and the upper end of the second air exchange cylinder is connected to the second air exchange box. The first and second air exchange cylinders are both fixedly connected at their lower ends to the upper end of the oil storage cylinder. A first piston is slidably connected inside the first air exchange cylinder, and a first push rod is fixed to the lower side of the first piston. A second piston is slidably connected inside the second air exchange cylinder. The lower ends of both the first and second push rods are inserted into the oil storage cylinder. A third piston is slidably connected inside the oil storage cylinder, and the lower ends of both the first and second push rods are in contact with the upper side of the third piston. A vertical pipe is provided on the right side of the first and second air exchange cylinders, and U-shaped pipes are provided at both the upper and lower ends of the vertical pipe. One end of the upper U-shaped tube is connected to the upper end of the vertical tube, and the other end is connected to the first ventilation box. One end of the lower U-shaped tube is connected to the lower end of the vertical tube, and the other end is connected to the second ventilation box. Two horizontal tubes are installed on the vertical tube. The left ends of the two horizontal tubes are connected to the first ventilation box and the second ventilation box, respectively. The middle of the horizontal tubes is connected to the vertical tube. An adjusting rod is slidably connected inside the vertical tube. The adjusting rod is provided with two contraction parts corresponding to the horizontal tubes. When the contraction part of the adjusting rod is located at the through part of the horizontal tube, the horizontal tube is connected to the outside. Both ends of the adjusting rod are... A sixth piston is fixedly connected to a U-shaped tube on one side of the sixth piston. Both U-shaped tubes have openings in the middle, and the openings in the middle of the two U-shaped tubes are connected to the two exhaust ports of the pneumatic cylinder through conduits. A fifth piston is slidably connected inside the working cylinder. An extension valve and a flow valve are provided on the fifth piston. A third push rod is fixedly connected to the middle of the upper side of the fifth piston. The third push rod passes through the upper end of the working cylinder and the upper end of the pneumatic cylinder in sequence. A fourth piston is slidably connected inside the pneumatic cylinder. The fourth piston is fixedly connected to the third push rod.

2. The vibration damping and fixing device for high-voltage components of a pure electric mining truck according to claim 1, characterized in that, The lower end of the oil storage cylinder is fixed with a lower fixing plate, the upper end of the third push rod is fixed with an upper fixing plate, a return spring is sleeved on the third push rod, the upper end of the return spring is fixedly connected to the upper fixing plate, and the lower end of the return spring is fixedly connected to the upper end of the pneumatic cylinder.

3. The vibration damping and fixing device for high-voltage components of a pure electric mining truck according to claim 1, characterized in that, One-way valves are installed in both the air inlet and exhaust port of the pneumatic cylinder.

4. The vibration damping and fixing device for high-voltage components of a pure electric mining truck according to claim 1, characterized in that, Both the upper end of the working cylinder and the upper end of the pneumatic cylinder are sealed with oil seals.

Images