Double-electromagnetic-valve shock absorber

Abstract

The invention belongs to the technical field of electromagnetic valve shock absorbers, and discloses a double-electromagnetic-valve shock absorber which comprises an end cover, an oil seal used for sealing a guide seat is arranged at the right end of the end cover, a working cylinder is connected to the outer wall of the guide seat in a sealed mode, and an oil storage cylinder assembly is arranged outside the guide seat and the working cylinder in a sealed and sleeved mode. A first connector and a second connector which are used for being connected with an electromagnetic valve structure are arranged on the outer wall of the oil storage cylinder assembly, a separation oil cylinder structure is connected to the outer wall of the working cylinder, high-speed damping force is generated through the oil pressure cavity P1 and the oil pressure cavity P2, when current is increased, the end cap is located at the lowermost end position and makes contact with the upper end of the liquid passing shaft, the cut-off area is minimum, and therefore the damping effect is good. The pressure difference between the P4 oil pressure cavity and the P3 oil pressure cavity generates low-speed damping force, so that the pressure difference between the P2 oil pressure cavity and the P1 oil pressure cavity is reduced, the sealing valve plate is difficult to open, in this way, the P2 oil pressure cavity and the P1 oil pressure cavity generate high-speed damping force, and the angle and the position between the two electromagnetic valves can be determined according to vehicle requirements.

Description

Technical Field

[0001] The invention belongs to the technical field of electromagnetic valve shock absorbers, in particular to a double electromagnetic valve shock absorber. Background Art

[0002] Automobile shock absorbers are an important part of the vehicle suspension system and play a vital role in improving driving comfort and safety. With the development of the automobile industry and the improvement of consumer demand, the performance requirements for automobile shock absorbers are becoming higher and higher.

[0003] The solenoid valve shock absorber is an advanced shock absorber technology. By introducing the solenoid valve and its control system, continuous and intelligent adjustment of the damping force is achieved. The solenoid valve shock absorber contains a piston cylinder filled with oil and an oil circuit equipped with a solenoid valve. By adjusting the opening and closing degree of the solenoid valve, the flow of oil can be controlled, thereby affecting the damping force. This technology enables the shock absorber to be dynamically adjusted according to actual road conditions and driving conditions, optimize suspension performance, and improve driving comfort and safety.

[0004] At present, solenoid valve shock absorbers have been widely used in some high-performance vehicles, luxury models and SUVs. However, with the development of the automobile industry and technological progress, the performance requirements for solenoid valve shock absorbers are also constantly improving. For example: traditional shock absorber technology, traditional shock absorbers are structures that generate damping force by hydraulic pressure, without solenoid valves, and cannot achieve damping force adjustment. The ride comfort is far inferior to that of electronically controlled shock absorbers. In addition, the existing external solenoid valve shock absorption technology, the existing external solenoid valve is a single solenoid valve, and there is only one external solenoid valve to control compression and recovery, and it is impossible to achieve independent control of compression damping force and recovery damping force. During operation, the same current is passed through compression and recovery, and the damping force under the same current is relatively fixed. Summary of the invention

[0005] In order to solve the problems raised in the above background technology, the present invention provides a dual solenoid valve shock absorber.

[0006] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a dual solenoid valve shock absorber, comprising an end cover, the right end of the end cover is provided with an oil seal for sealing a guide seat, the outer wall of the guide seat is sealed and connected with a working cylinder, the external sealing sleeve of the guide seat and the working cylinder is provided with an oil storage cylinder assembly, the outer wall of the oil storage cylinder assembly is provided with a first joint and a second joint for connecting a solenoid valve structure, the outer wall of the working cylinder is connected with a separation cylinder structure, the inner wall of the guide seat is slidably connected with a piston, the outer wall of the right side of the guide seat is provided with a separation cylinder-compression, the inner wall of the right end of the oil storage cylinder assembly is sealed and connected with a bottom valve, and the second joint is connected to the solenoid valve structure provided with a solenoid valve-compression.

[0007] Preferably, the solenoid valve structure includes a pilot valve seat, a sealing valve plate, a liquid-passing shaft, an end cap and a safety valve. The upper end of the pilot valve seat is provided with a sealing valve plate for sealing the end cap, the inner wall of the end cap is provided with a liquid-passing shaft, and the upper end of the end cap is provided with a safety valve.

[0008] Preferably, a P1 oil pressure chamber is formed between the pilot valve seat and the sealing valve plate, and a P2 oil pressure chamber is formed on both sides of the liquid-passing shaft.

[0009] Preferably, a P3 oil pressure chamber is formed between the liquid-through shaft and the end cap, and a P4 oil pressure chamber is formed on both sides of the end cap.

[0010] Preferably, the separation cylinder structure includes a separation cylinder 1-restore, a wave spring, a valve plate, and a separation cylinder 2-restore. A wave spring is provided at the right end of the separation cylinder 1-restore, and the right end of the wave spring is connected to the valve plate. The outer wall of the separation cylinder 1-restore is provided with a separation cylinder 2-restore.

[0011] Preferably, the wave spring is arranged around the outer wall of the separation cylinder 1-recovery, and the valve plate seals the separation cylinder 2-recovery.

[0012] Preferably, the wave spring is used to fit the valve plate and the separation cylinder 2 to restore when not in operation, and the wave spring applies an axial force to the valve plate.

[0013] Preferably, an inner cavity A1 is formed between the piston and the working cylinder.

[0014] Preferably, the A2 inner cavity is formed between the working cylinder and the separation cylinder structure, and the A4 inner cavity is formed between the second joint and the working cylinder.

[0015] Preferably, an A3 inner cavity and an A0 inner cavity are respectively formed on two sides of the second connector, and an A0 inner cavity is formed on the right side of the first connector.

[0016] Compared with the prior art, the present invention has the following beneficial effects: The present invention generates a high-speed damping force through the P1 oil pressure chamber and the P2 oil pressure chamber. When the current increases, the end cap is at the lowest position and contacts the upper end of the liquid-passing shaft, and its intercepting area is the smallest. The pressure difference between the P4 oil pressure chamber and the P3 oil pressure chamber generates a low-speed damping force, which causes the pressure difference between the P2 oil pressure chamber and the P1 oil pressure chamber to become smaller, making it more difficult to open the sealing valve plate. In this way, the P2 oil pressure chamber and the P1 oil pressure chamber generate a high-speed damping force. The angle and position between the two solenoid valves can be determined according to vehicle requirements.

[0017] The present invention has the following steps: when the shock absorber is in the recovery state, the pressure of the A1 inner cavity and the A2 inner cavity is greater than that of the A0 inner cavity, the oil enters the recovery solenoid valve from the A1 inner cavity to the A2 inner cavity, and the pressure of the A2 inner cavity where the one-way valve is located is greater than that of the A0 inner cavity; the wave spring and the valve plate do not work and are in a recovery fit with the separation oil cylinder, the one-way valve does not open, and the pressure balance of the A3 inner cavity is maintained by the bottom valve; when the shock absorber is in the compression state, the pressure of the A1 inner cavity and the A2 inner cavity is less than that of the A0 inner cavity, the oil enters the compression solenoid valve from the A3 inner cavity to the A4 inner cavity, and the pressure of the A2 inner cavity where the one-way valve is located is less than that of the A0 inner cavity; when the valve plate is in a compressed state, the oil enters the A2 inner cavity from the A0 inner cavity, the one-way valve opens, and the pressure balance of the A1 inner cavity is maintained.

[0018] In the present invention, the piston and the restoring valve assembly move upward, the piston rod is pulled out of the shock absorber, the volume of the A1 inner cavity decreases, the pressure increases, the oil passes through the small hole above the working cylinder, passes through the A2 inner cavity inside the separation cylinder-restoration, and flows to the solenoid valve-restoration through the first joint. The oil passes through the solenoid valve structure and generates a corresponding restoring damping force according to the current input of the restoring solenoid valve. The oil flows out of the solenoid valve structure and enters the A0 inner cavity of the oil storage cylinder assembly. At the same time, the volume of the A3 inner cavity increases, the pressure decreases, and the oil in the A0 inner cavity is supplemented to the A3 inner cavity through the bottom valve to achieve pressure balance. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the overall cutaway structure of the present invention; Figure 2 It is a schematic diagram of the cross-section structure of the solenoid valve of the present invention; Figure 3 It is a schematic diagram of the cutaway structure of the separation oil cylinder of the present invention; Figure 4 It is a schematic diagram of the overall front structure of the present invention.

[0020] In the figure: 1. end cover; 2. oil seal; 3. guide seat; 4. working cylinder; 5. oil storage cylinder assembly; 6. separation cylinder structure; 7. first joint; 8. solenoid valve structure; 9. separation cylinder - compression; 10. bottom valve; 11. piston; 12. solenoid valve - compression; 13. second joint; 14. A4 cavity; 15. A3 cavity; 16. A0 cavity; 17. A2 cavity; 18. A1 cavity; 601. separation cylinder 1 - recovery; 602. wave spring; 603. valve plate; 604. separation cylinder 2 - recovery; 801. pilot valve seat; 802. sealing valve plate; 803. liquid shaft; 804. end cap; 805. safety valve; 806. P4 oil pressure chamber; 807. P3 oil pressure chamber; 808. P2 oil pressure chamber; 809. P1 oil pressure chamber. DETAILED DESCRIPTION

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

[0022] like Figure 1 As shown, the present invention provides a dual solenoid valve shock absorber, including an end cover 1, an oil seal 2 for sealing a guide seat 3 is provided at the right end of the end cover 1, a working cylinder 4 is sealedly connected to the outer wall of the guide seat 3, an oil storage cylinder assembly 5 is provided on the outer wall of the guide seat 3 and the working cylinder 4, a first joint 7 and a second joint 13 for connecting a solenoid valve structure 8 are provided on the outer wall of the oil storage cylinder assembly 5, a separation cylinder structure 6 is connected to the outer wall of the working cylinder 4, a piston 11 is slidably connected to the inner wall of the guide seat 3, a separation cylinder-compression 9 is provided on the outer wall of the right side of the guide seat 3, a bottom valve 10 is sealedly connected to the inner wall of the right end of the oil storage cylinder assembly 5, an A3 inner cavity 15 and an A0 inner cavity 16 are respectively opened on both sides of the second joint 13, an A0 inner cavity 16 is opened on the right side of the first joint 7, an A2 inner cavity 17 is formed between the working cylinder 4 and the separation cylinder structure 6, and an A1 inner cavity 18 is formed between the piston 11 and the working cylinder 4.

[0023] Adopting the above scheme: during compression, the piston 11 and the restoring valve assembly move downward and press into the shock absorber, the volume of the A3 inner chamber 15 decreases, the pressure increases, and the oil will pass through the small hole below the working cylinder 4 through the A4 inner chamber 14 inside the separation cylinder-compression 9 and the second joint 13 to the solenoid valve-compression 12. The oil passes through the solenoid valve-compression 12 and generates corresponding compression damping force according to the current input of the compression solenoid valve. The oil flows out of the solenoid valve-compression 12 and enters the A0 inner chamber 16 of the oil storage cylinder assembly 5. At the same time, the volume of the A1 inner chamber 18 increases and the pressure decreases. The oil in the A0 inner chamber 16 passes through the A2 inner chamber 17 inside the separation cylinder-recovery, flows through the flow hole at the upper end of the working cylinder 4 and enters the A1 inner chamber 18 to achieve pressure balance. During recovery, the piston 11 and the restoring valve assembly move upward. The piston rod is pulled out of the shock absorber, the volume of the A1 inner cavity 18 decreases, and the pressure increases. The oil will pass through the small hole above the working cylinder 4, through the A2 inner cavity 17 inside the separation cylinder-recovery, and through the first joint 7 to the solenoid valve-recovery. The oil passes through the solenoid valve structure 8 and generates a corresponding restoring damping force according to the current input of the recovery solenoid valve. The oil flows out of the solenoid valve structure 8 and enters the A0 inner cavity 16 of the oil storage cylinder assembly 5. At the same time, the volume of the A3 inner cavity 15 increases, and the pressure decreases. The oil in the A0 inner cavity 16 is replenished to the A3 inner cavity 15 through the bottom valve 10 to achieve pressure balance.

[0024] like Figure 2As shown, the present invention provides a dual solenoid valve shock absorber, the solenoid valve structure 8 includes a pilot valve seat 801, a sealing valve plate 802, a liquid-passing shaft 803, an end cap 804 and a safety valve 805, the upper end of the pilot valve seat 801 is provided with a sealing valve plate 802 for sealing the end cap 804, the inner wall of the end cap 804 is provided with a liquid-passing shaft 803, the upper end of the end cap 804 is provided with a safety valve 805, a P1 oil pressure chamber 809 is formed between the pilot valve seat 801 and the sealing valve plate 802, a P2 oil pressure chamber 808 is formed on both sides of the liquid-passing shaft 803, a P3 oil pressure chamber 807 is formed between the liquid-passing shaft 803 and the end cap 804, and a P4 oil pressure chamber 806 is formed on both sides of the end cap 804.

[0025] The above scheme is adopted: the pilot valve seat 801, the sealing valve plate 802, the liquid shaft 803, the end cap 804, the safety valve 805 and other main components and other valve plates, the oil circuit flow principle: during the compression or recovery process, the oil enters the solenoid valve through the 7 / 13 joint and is divided into two oil circuits. The first oil circuit passes through the pilot valve seat 801 to form the P1 oil pressure chamber 809, and the second oil circuit passes through the liquid shaft 803. The oil passing through the liquid shaft 803 also forms two oil circuits. The first oil circuit forms the P2 oil pressure chamber 808, and the second oil circuit passes through the end cap 804 to form the P3 oil pressure chamber 807, and then passes through the safety valve 805 to enter the P4 oil pressure chamber 806. The P4 chamber is connected to the oil storage cylinder assembly. During the damping force generation process, the oil flows through the pilot valve seat 801, the liquid shaft 803, the end cap 804 and reaches the P3 oil pressure chamber 80 7. After being intercepted by the safety valve 805, it reaches the P4 oil pressure chamber 806. The solenoid valve can control the contact distance between the end cap 804 and the liquid shaft 803, thereby affecting the interception area. When the current is low, the end cap 804 is in the middle position, and its interception area is large. The safety valve 805 is in the open state, and the interception area is increased. The pressure difference between the P3 oil pressure chamber 807 and the P4 oil pressure chamber 806 produces a low-speed damping force, which causes the pressure difference between the P2 oil pressure chamber 808 and the P1 oil pressure chamber 809 to increase, and the sealing valve plate 802 is easier to open. The P1 oil pressure chamber 809 and the P2 oil pressure chamber 808 produce a high-speed damping force. When the current increases, the end cap 804 is at the lowest position and contacts the upper end of the liquid shaft 803, and its interception area is the smallest. The pressure difference between the P4 oil pressure chamber 806 and the P3 oil pressure chamber 807 generates a low-speed damping force, which causes the pressure difference between the P2 oil pressure chamber 808 and the P1 oil pressure chamber 809 to become smaller, making it more difficult to open the sealing valve plate 802. In this way, the P2 oil pressure chamber 808 and the P1 oil pressure chamber 809 generate a high-speed damping force. The angle and position between the two solenoid valves can be determined according to vehicle requirements.

[0026] like Figure 3As shown, the present invention provides a dual solenoid valve shock absorber, the separation cylinder structure 6 includes a separation cylinder 1-recovery 601, a wave spring 602, a valve plate 603, and a separation cylinder 2-recovery 604, the right end of the separation cylinder 1-recovery 601 is provided with a wave spring 602, the right end of the wave spring 602 is connected with the valve plate 603, the outer wall of the separation cylinder 1-recovery 601 is provided with a separation cylinder 2-recovery 604, the wave spring 602 is arranged around the outer wall of the separation cylinder 1-recovery 601, the valve plate 603 seals the separation cylinder 2-recovery 604, and the wave spring 602 is used to fit the valve plate 603 and the separation cylinder 2-recovery 604 when not working, and the wave spring 602 applies axial force to the valve plate 603.

[0027] The above scheme is adopted: a one-way valve is integrated on the separation cylinder recovery, wherein the separation cylinder 1-recovery 601 and the separation cylinder 2-recovery 604 are sealed by threaded engagement or riveting, and the valve plate 603 seals the end face of the flow hole on the separation cylinder 2-recovery 604, isolating the A0 inner cavity 16 and the A2 inner cavity 17 to prevent leakage, and the wave spring 602 applies an axial force to the valve plate 603 to ensure that the valve plate 603 and the end face of the flow hole of the separation cylinder 2-recovery 604 always maintain a sealing effect. When the shock absorber is in recovery, the pressure of the A1 inner cavity 18 and the A2 inner cavity 17 is greater than that of the A0 inner cavity 16, and the oil flows from the A1 inner cavity 18 to the A2 inner cavity 1 7 enters the recovery solenoid valve, the pressure in the A2 cavity 17 where the one-way valve is located is greater than that in the A0 cavity 16, the wave spring 602 and the valve plate 603 do not work and fit with the separation cylinder 2-recovery 604, the one-way valve does not open, and the pressure balance in the A3 cavity 15 is maintained by the bottom valve 10. When the shock absorber is in compression, the pressure in the A1 cavity 18 and the A2 cavity 17 is less than that in the A0 cavity 16, and the oil enters the compression solenoid valve from the A3 cavity 15 to the A4 cavity 14. The pressure in the A2 cavity 17 where the one-way valve is located is less than that in the A0 cavity 16, and the valve plate 603 is in a negative pressure state. The oil enters the A2 cavity 17 from the A0 cavity 16, and the one-way valve opens to maintain the pressure balance in the A1 cavity 18.

[0028] The working principle and use process of the present invention are as follows: during compression, the piston 11 and the restoring valve assembly move downward and press into the shock absorber, the volume of the A3 inner cavity 15 decreases, the pressure increases, and the oil passes through the small hole below the working cylinder 4, the A4 inner cavity 14 inside the separation cylinder-compression 9, and the second joint 13 to flow to the solenoid valve-compression 12. The oil passes through the solenoid valve-compression 12 and generates a corresponding compression damping force according to the current input of the compression solenoid valve. The oil flows out of the solenoid valve-compression 12 and enters the A0 inner cavity 16 of the oil storage cylinder assembly 5. At the same time, the volume of the A1 inner cavity 18 increases and the pressure decreases. The oil in the A0 inner cavity 16 passes through the A2 inner cavity 17 inside the separation cylinder-recovery, flows through the flow hole at the upper end of the working cylinder 4 and enters the A1 inner cavity 18 to achieve pressure balance. During recovery, the piston 11 and the restoring valve assembly move upward. The piston rod is pulled out of the shock absorber, the volume of the A1 inner chamber 18 decreases, the pressure increases, the oil will pass through the small hole above the working cylinder 4, through the A2 inner chamber 17 inside the separation cylinder-recovery, and through the first joint 7 to the solenoid valve-recovery. The oil passes through the solenoid valve structure 8 and generates a corresponding recovery damping force according to the current input of the recovery solenoid valve. The oil flows out of the solenoid valve structure 8 and enters the A0 inner chamber 16 of the oil storage cylinder assembly 5. At the same time, the volume of the A3 inner chamber 15 increases and the pressure decreases. The oil in the A0 inner chamber 16 is supplemented to the A3 inner chamber 15 through the bottom valve 10 to achieve pressure balance. The pilot valve seat 801 seals the valve plate 802 and the liquid shaft 803 end cap 804 Safety valve 805 and other main components and other valve plates, oil circuit flow principle: during compression or recovery, the oil enters the solenoid valve through the 7 / 13 joint and is divided into two oil circuits. The first oil circuit passes through the pilot valve seat 801 to form the P1 oil pressure chamber 809, and the second oil circuit passes through the liquid shaft 803. The oil passing through the liquid shaft 803 also forms two oil circuits. The first oil circuit forms the P2 oil pressure chamber 808, and the second oil circuit passes through the end cap 804 to form the P3 oil pressure chamber 807, and then passes through the safety valve 805 to enter the P4 oil pressure chamber 806. The P4 chamber is connected to the oil storage cylinder assembly. During the damping force generation process, the oil flows through the pilot valve seat 801, the liquid shaft 803, the end cap 804, and reaches the P3 oil pressure chamber 80 7. After being intercepted by the safety valve 805, it reaches the P4 oil pressure chamber 806. The solenoid valve can control the contact distance between the end cap 804 and the liquid shaft 803, thereby affecting the interception area. When the current is low, the end cap 804 is in the middle position, and its interception area is large. The safety valve 805 is in the open state, and the interception area is increased. The pressure difference between the P3 oil pressure chamber 807 and the P4 oil pressure chamber 806 produces a low-speed damping force, resulting in an increase in the pressure difference between the P2 oil pressure chamber 808 and the P1 oil pressure chamber 809. The sealing valve plate 802 is easier to open, and the P1 oil pressure chamber 809 and the P2 oil pressure chamber 808 produce a high-speed damping force. When the current increases, the end cap 804 is at the lowest position and contacts the upper end of the liquid shaft 803, and its interception area is the smallest. The pressure difference between the P4 oil pressure chamber 806 and the P3 oil pressure chamber 807 produces a low-speed damping force.This causes the pressure difference between the P2 oil pressure chamber 808 and the P1 oil pressure chamber 809 to become smaller, making it more difficult to open the sealing valve plate 802. In this way, the P2 oil pressure chamber 808 and the P1 oil pressure chamber 809 generate high-speed damping force. The angle and position between the two solenoid valves can be determined according to vehicle requirements, and are integrated on the separation cylinder recovery through a one-way valve, wherein the separation cylinder 1-recovery 601 and the separation cylinder 2-recovery 604 are sealed by threaded engagement or riveting, and the valve plate 603 seals the end face of the flow hole on the separation cylinder 2-recovery 604 to isolate the A0 inner cavity 16 and the A2 inner cavity 17 to prevent leakage. The wave spring 602 applies axial force to the valve plate 603 to ensure that the valve plate 603 and the end face of the flow hole of the separation cylinder 2-recovery 604 always maintain a sealing effect. When the shock absorber is in recovery, the pressure in the A1 inner cavity 18 and the A2 inner cavity 17 is greater than that in the A0 inner cavity 16, and the oil flows from the A1 inner cavity The pressure in the A2 cavity 17 where the check valve is located is greater than that in the A0 cavity 16. The wave spring 602 and the valve plate 603 do not work and fit with the separation cylinder 2-recovery 604. The check valve does not open. The pressure balance in the A3 cavity 15 is maintained by the bottom valve 10. When the shock absorber is in compression, the pressure in the A1 cavity 18 and the A2 cavity 17 is less than that in the A0 cavity 16. The oil enters the compression solenoid valve from the A3 cavity 15 to the A4 cavity 14. The pressure in the A2 cavity 17 where the check valve is located is less than that in the A0 cavity 16. The valve plate 603 is in a compressed state. The oil enters the A2 cavity 17 from the A0 cavity 16. The check valve opens to maintain the pressure balance in the A1 cavity 18.

[0029] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0030] 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 dual solenoid valve shock absorber, comprising an end cover (1), characterized in that: The right end of the end cover (1) is provided with an oil seal (2) for sealing the guide seat (3); the outer wall of the guide seat (3) is sealedly connected to a working cylinder (4); the outer sealing sleeve of the guide seat (3) and the working cylinder (4) is provided with an oil storage cylinder assembly (5); the outer wall of the oil storage cylinder assembly (5) is provided with a first joint (7) and a second joint (13) for connecting to a solenoid valve structure (8); the outer wall of the working cylinder (4) is connected to a separation cylinder structure (6); the inner wall of the guide seat (3) is slidably connected to a piston (11); the outer wall of the right side of the guide seat (3) is provided with a separation cylinder-compression (9); the inner wall of the right end of the oil storage cylinder assembly (5) is sealedly connected to a bottom valve (10); the second joint (13) is connected to the solenoid valve structure (8) provided with a solenoid valve-compression (12).

2. A dual solenoid valve shock absorber according to claim 1, characterized in that: The solenoid valve structure (8) comprises a pilot valve seat (801), a sealing valve plate (802), a liquid-passing shaft (803), an end cap (804) and a safety valve (805); the upper end of the pilot valve seat (801) is provided with a sealing valve plate (802) for sealing the end cap (804); the inner wall of the end cap (804) is provided with a liquid-passing shaft (803); and the upper end of the end cap (804) is provided with a safety valve (805).

3. A dual solenoid valve shock absorber according to claim 2, characterized in that: A P1 oil pressure chamber (809) is formed between the pilot valve seat (801) and the sealing valve plate (802), and P2 oil pressure chambers (808) are formed on both sides of the liquid-passing shaft (803).

4. A dual solenoid valve shock absorber according to claim 2, characterized in that: A P3 oil pressure chamber (807) is formed between the liquid-passing shaft (803) and the end cap (804), and P4 oil pressure chambers (806) are formed on both sides of the end cap (804).

5. The dual solenoid valve shock absorber according to claim 1, characterized in that: The separation oil cylinder structure (6) comprises a separation oil cylinder 1-recovery (601), a wave spring (602), a valve plate (603), and a separation oil cylinder 2-recovery (604). The right end of the separation oil cylinder 1-recovery (601) is provided with a wave spring (602), the right end of the wave spring (602) is connected to the valve plate (603), and the outer wall of the separation oil cylinder 1-recovery (601) is provided with a separation oil cylinder 2-recovery (604).

6. A dual solenoid valve shock absorber according to claim 5, characterized in that: The wave spring (602) is arranged around the outer wall of the separation oil cylinder 1-reset (601), and the valve plate (603) seals the separation oil cylinder 2-reset (604).

7. The dual solenoid valve shock absorber according to claim 5, characterized in that: When not in operation, the wave spring (602) is used to fit the valve plate (603) and the separation oil cylinder 2-restoration (604), and the wave spring (602) applies an axial force to the valve plate (603).

8. The dual solenoid valve shock absorber according to claim 1, characterized in that: An inner cavity A1 (18) is formed between the piston (11) and the working cylinder (4).

9. The dual solenoid valve shock absorber according to claim 1, characterized in that: The A2 inner cavity (17) is formed between the working cylinder (4) and the separation cylinder structure (6), and the A4 inner cavity (14) is formed between the second joint (13) and the working cylinder (4).

10. The dual solenoid valve shock absorber according to claim 1, characterized in that: An A3 inner cavity (15) and an A0 inner cavity (16) are respectively formed on two sides of the second joint (13), and an A0 inner cavity (16) is formed on the right side of the first joint (7).

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