Novel damping-force-controllable double-electromagnetic-valve shock absorber

Abstract

The invention belongs to the technical field of electromagnetic valve shock absorbers, and discloses a novel damping-force-controllable double-electromagnetic-valve shock absorber which comprises a sealing opening and an electromagnetic valve-restoring assembly, the sealing opening is connected to the inner surface of the left end of an oil storage cylinder assembly in a sealed mode, an oil seal is attached to the right end face of the sealing opening, and a guide seat is attached to the right side surface of the oil seal; when current is low, the end cap is located in the middle, the closure area is large, the safety valve is in an open state, the closure area is increased, the pressure difference between the oil cavity P and the oil cavity P generates low-speed damping force, the pressure difference between the oil cavity P and the oil cavity P is increased, the sealing valve plate is easy to open, and the oil cavity P and the backflow valve seat generate high-speed damping force; when current is increased, the end cap is located at the lowermost end and makes contact with the upper end of the backflow valve seat, the closure area is minimum, the pressure difference between the oil cavity P and the oil cavity P generates low-speed damping force, the pressure difference between the oil cavity P and the oil cavity P becomes small, the sealing valve plate is difficult to open, and therefore the oil cavity P and the oil cavity P generate high-speed damping force.

Description

Technical Field

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

[0002] Dual solenoid valve shock absorbers are widely used in the fields of vehicles, mechanical equipment, etc. The core of the shock absorber is to control the flow of oil through the solenoid valve, so as to achieve precise adjustment of the shock absorption performance. With the continuous advancement of industrial technology, the performance requirements of shock absorbers are also increasing, especially in terms of response speed, adjustment accuracy and service life.

[0003] Although the dual solenoid valve shock absorber has achieved remarkable application results, there are still some problems in practical application: 1. Traditional shock absorber technology: the traditional shock absorber is a structure that generates damping force by hydraulic pressure, without solenoid valve, and cannot achieve damping force adjustment. The ride comfort is far inferior to that of the electronically controlled shock absorber; 2. The existing external solenoid valve vibration reduction technology is a single solenoid valve, and there is only one external solenoid valve to control compression and recovery. It is impossible to achieve independent control of the compression damping force and the recovery damping force. When working, the same current is passed through the compression and recovery, and the damping force under the same current is relatively fixed. Summary of the invention

[0004] In order to solve the problems raised in the above background technology, the present invention provides a novel dual-solenoid valve shock absorber with controllable damping force, which has the advantages of improving riding comfort and providing better operating stability.

[0005] To achieve the above-mentioned object, the present invention provides the following technical solutions: a novel dual-solenoid valve shock absorber with controllable damping force, comprising a seal and a solenoid valve-restoring assembly, wherein the seal is sealingly connected to the inner surface of the left end of the oil storage cylinder assembly, an oil seal is attached to the right end surface of the seal, a guide seat is attached to the right surface of the oil seal, a working cylinder is sealingly connected to the outer wall on the right side of the guide seat, and the oil storage cylinder assembly is provided with a one-way valve assembly for connecting the solenoid valve-restoring assembly; Wherein: the one-way valve assembly comprises a joint, a valve plate is installed on the upper end of the joint, a wave spring is installed on the upper end surface of the valve plate, and a valve seat is fixedly connected to the upper end surface of the wave spring.

[0006] Preferably, the solenoid valve-recovery assembly includes a sealing valve plate, a reflux valve seat, an end cap and a safety valve, the lower end of the sealing valve plate is installed on the upper end surface of the valve seat, the reflux valve seat is fixedly connected to the upper end surface of the sealing valve plate, the end cap is installed on the upper end surface of the reflux valve seat, and the safety valve is fixedly connected to the upper end surface of the end cap.

[0007] Preferably, a P4 oil chamber is formed on both sides of the reflux valve seat, a P3 oil chamber is formed between the reflux valve seat and the end cap, a P2 oil chamber is formed between the reflux valve seat and the sealing valve plate, and a P1 oil chamber is formed between the sealing valve plate and the valve seat.

[0008] Preferably, the outer wall of the working cylinder is connected to a separation cylinder - recovery, a separation cylinder - compression is arranged on the right side of the separation cylinder - recovery, a valve bottom is installed on the right inner wall of the working cylinder, the outer wall of the oil storage cylinder assembly is provided with a pilot valve seat for connecting to the solenoid valve - compression, and the inner wall of the working cylinder is slidably connected to a piston rod.

[0009] Preferably, an A3 cavity is formed between the right side of the piston rod and the working cylinder, and an A1 cavity is formed between the left side of the piston rod and the working cylinder.

[0010] Preferably, an A0 cavity is formed between the oil storage cylinder assembly and the separation oil cylinder-recovery, and an A2 cavity is formed between the separation oil cylinder-recovery and the working cylinder.

[0011] Compared with the prior art, the present invention has the following beneficial effects: After the oil enters the solenoid valve through the one-way valve assembly and the pilot valve seat, it is divided into two oil paths. The first oil path passes through the valve seat to form the first P oil chamber, and the second oil path passes through the return valve seat. The oil passing through the return valve seat also forms two oil paths. The first oil path forms the second P oil chamber, and the second oil path passes through the end cap to form the third P oil chamber, and then passes through the safety valve to enter the fourth P oil chamber. The P oil chamber is connected to the oil storage cylinder assembly. During the damping force generation process, the oil flows through the valve seat, the pilot valve seat, the return valve seat, the end cap, and reaches the P oil chamber. After the safety valve cuts off the flow, it reaches the P oil chamber. The solenoid valve can control the contact distance between the end cap and the reflux valve seat, thereby affecting the cut-off area. When the current is low, the end cap is in the middle position, and its cut-off area is larger. The safety valve is in the open state, and the cut-off area increases. The pressure difference between the P oil chamber and the P oil chamber produces a low-speed damping force, which causes the pressure difference between the P oil chamber and the P oil chamber to increase, making it easier for the sealing valve plate to open, and the P oil chamber and the reflux valve seat to produce a high-speed damping force; when the current increases, the end cap is in the lowest position and contacts the upper end of the reflux valve seat, and its cut-off area is the smallest. The pressure difference between the P oil chamber and the P oil chamber produces a low-speed damping force, which causes the pressure difference between the P oil chamber and the P oil chamber to decrease, making it difficult for the sealing valve plate to open, so that the P oil chamber and the P oil chamber produce a high-speed damping force. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the overall structure of the present invention; Figure 2 It is a schematic diagram of the structure of the solenoid valve-recovery assembly of the present invention; Figure 3 It is a schematic diagram of the structure of the one-way valve assembly of the present invention; Figure 4 It is a schematic diagram of the overall front view structure of the present invention.

[0013] In the figure: 1. seal; 2. oil seal; 3. guide seat; 4. working cylinder; 5. oil storage cylinder assembly; 6. separation cylinder - recovery; 7. one-way valve assembly; 8. solenoid valve - recovery assembly; 9. separation cylinder - compression; 10. valve bottom; 11. piston rod; 12. solenoid valve - compression; 13. pilot valve seat; 14. A0 cavity; 15. A1 cavity; 16. A2 cavity; 17. A3 cavity; 18. A4 cavity; 701. joint; 702. valve plate; 703. wave spring; 704. valve seat; 801. sealing valve plate; 802. reflux valve seat; 803. end cap; 804. safety valve; 805. P1 oil chamber; 806. P2 oil chamber; 807. P3 oil chamber; 808. P4 oil chamber. DETAILED DESCRIPTION

[0014] 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.

[0015] like Figure 1 and Figure 3 As shown, the present invention provides a novel dual-solenoid valve shock absorber with controllable damping force, comprising a seal 1 and a solenoid valve-restoration assembly 8, the seal 1 is sealingly connected to the inner surface of the left end of the oil storage cylinder assembly 5, the right end surface of the seal 1 is fitted with an oil seal 2, the right side surface of the oil seal 2 is fitted with a guide seat 3, the outer wall on the right side of the guide seat 3 is sealingly connected to a working cylinder 4, the oil storage cylinder assembly 5 is provided with a one-way valve assembly 7 for connecting to the solenoid valve-restoration assembly 8, the outer wall of the working cylinder 4 is connected to a separation cylinder-restoration 6, and a separation cylinder-compression 9 is arranged on the right side of the separation cylinder-restoration 6, a valve bottom 10 is installed on the right inner wall of the working cylinder 4, the outer wall of the oil storage cylinder assembly 5 is provided with a pilot valve seat 13 for connecting to the solenoid valve-compression 12, and the inner wall of the working cylinder 4 The wall is slidably connected with a piston rod 11, and an A3 cavity 17 is formed between the right side of the piston rod 11 and the working cylinder 4. The solenoid valve-recovery assembly 8 includes a sealing valve plate 801, a reflux valve seat 802, an end cap 803 and a safety valve 804. The lower end of the sealing valve plate 801 is installed on the upper end surface of the valve seat 704, the reflux valve seat 802 is fixedly connected to the upper end surface of the sealing valve plate 801, the end cap 803 is installed on the upper end surface of the reflux valve seat 802, the safety valve 804 is fixedly connected to the upper end surface of the end cap 803, an A1 cavity 15 is formed between the left side of the piston rod 11 and the working cylinder 4, an A0 cavity 14 is formed between the oil storage cylinder assembly 5 and the separation cylinder-recovery 6, and an A2 cavity 16 is formed between the separation cylinder-recovery 6 and the working cylinder 4.

[0016] Adopting the above scheme: during compression, the piston rod 11 and the restoring valve assembly move downward and press into the inside of the shock absorber, the volume of the A3 cavity 17 decreases, the pressure increases, and the oil passes through the small hole below the working cylinder 4, passes through the A4 cavity 18 inside the separation cylinder-compression 9, and flows to the solenoid valve-compression 12 through the pilot valve seat 13. 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 cavity 14 of the oil storage cylinder assembly 5. At the same time, the volume of the A1 cavity 15 increases, the pressure decreases, and the oil in the A0 cavity 14 flows into the A2 cavity 16 through the one-way valve assembly 7, flows through the flow hole at the upper end of the working cylinder 4 and enters the A1 cavity 15 to achieve pressure balance; During restoration, the piston rod 11 and the restoration valve assembly move upward, the piston rod is pulled out of the shock absorber, the volume of the A1 cavity 15 decreases, the pressure increases, and the oil passes through the small hole above the working cylinder 4, through the A2 cavity 16 inside the separation cylinder-restoration 6, and through the one-way valve assembly 7 to the solenoid valve-restoration assembly 8. The oil passes through the solenoid valve-restoration assembly 8 and generates a corresponding restoration damping force according to the current input of the restoration solenoid valve. The oil flows out of the solenoid valve-restoration assembly 8 and enters the A0 cavity 14 of the oil storage cylinder assembly 5. At the same time, the volume of the A3 cavity 17 increases, the pressure decreases, and the liquid in the A0 cavity 14 is replenished to the A3 cavity 17 through the valve bottom 10 to achieve pressure balance.

[0017] like Figure 2 As shown, the present invention provides a novel dual-solenoid valve shock absorber with controllable damping force, the solenoid valve-restoring component 8 includes a sealing valve disc 801, a reflux valve seat 802, an end cap 803 and a safety valve 804, the lower end of the sealing valve disc 801 is installed on the upper end surface of the valve seat 704, the reflux valve seat 802 is fixedly connected to the upper end surface of the sealing valve disc 801, the end cap 803 is installed on the upper end surface of the reflux valve seat 802, the safety valve 804 is fixedly connected to the upper end surface of the end cap 803, P4 oil chambers 808 are formed on both sides of the reflux valve seat 802, a P3 oil chamber 807 is formed between the reflux valve seat 802 and the end cap 803, a P2 oil chamber 806 is formed between the reflux valve seat 802 and the sealing valve disc 801, and a P1 oil chamber 805 is formed between the sealing valve disc 801 and the valve seat 704.

[0018] Adopt the above scheme: through the oil circuit circulation principle, during the compression or recovery process, the oil enters the solenoid valve through the one-way valve assembly 7 and the pilot valve seat 13 and is divided into two oil circuits. The first oil circuit passes through the valve seat 704 to form the first P1 oil chamber 805, and the second oil circuit passes through the return valve seat 802. The oil passing through the return valve seat 802 also forms two oil circuits. The first oil circuit forms the second P2 oil chamber 806, and the second oil circuit passes through the end cap 803 to form the third P3 oil chamber 807807, and then passes through the safety valve 804 to enter the fourth P4 oil chamber 808808. The P4 oil chamber 808808 is connected to the oil storage cylinder assembly 5. During the damping force generation process, the oil flows through the valve seat 704, the pilot valve seat, and the return valve seat 802. The end cap 803 reaches the P3 oil chamber 807, and reaches the P4 oil chamber 808 after being intercepted by the safety valve 804. The solenoid valve can control the contact distance between the end cap 803 and the return valve seat 802, thereby affecting the interception area. When the current is low, the end cap 803 is in the middle position, and its interception area is large. The safety valve 804 is in the open state, and the interception area is increased. The pressure difference between the P3 oil chamber 807 and the P4 oil chamber 808 produces a low-speed damping force, which causes the pressure difference between the P2 oil chamber 806 and the P1 oil chamber 805 to increase, making it easier for the sealing valve plate 801 to open, and the P1 oil chamber 805 and the return valve seat 802 produce a high-speed damping force. When the current increases, the end cap 803 is at the lowest position and contacts the upper end of the return valve seat 802, and its interception area is the smallest. The pressure difference between the P3 oil chamber 807 and the P4 oil chamber 808 generates a low-speed damping force, which causes the pressure difference between the P2 oil chamber 806 and the P1 oil chamber 805 to decrease, making it more difficult to open the sealing valve plate 801, so that the P1 oil chamber 805 and the P2 oil chamber 806 generate a high-speed damping force.

[0019] like Figure 1 As shown, the present invention provides a novel dual-solenoid valve shock absorber with controllable damping force, the one-way valve assembly 7 includes a joint 701, a valve plate 702 is installed on the upper end of the joint 701, a wave spring 703 is installed on the upper end surface of the valve plate 702, a valve seat 704 is fixedly connected to the upper end surface of the wave spring 703, an A3 cavity 17 is formed between the right side of the piston rod 11 and the working cylinder 4, an A1 cavity 15 is formed between the left side of the piston rod 11 and the working cylinder 4, an A0 cavity 14 is formed between the oil storage cylinder assembly 5 and the separation cylinder-recovery 6, and an A2 cavity 16 is formed between the separation cylinder-recovery 6 and the working cylinder 4.

[0020] The above scheme is adopted: the one-way valve is integrated at the lower end of the solenoid valve-restoration component 8, wherein the one-way valve component 7 and the valve seat 704 are riveted with an O-ring seal in the middle, the valve plate 702 seals the end face of the flow hole on the joint 701, isolates the A0 cavity 14 and the A2 cavity 16 to prevent leakage, and the wave spring 703 applies axial force to the valve plate 702 to ensure the sealing effect. When the shock absorber is in the restoration, the pressure of the A1 cavity 15 and the A2 cavity 16 is greater than that of the A0 cavity 14, and the oil enters the solenoid valve-restoration component 8 from the A1 cavity 15 to the A2 cavity 16. The one-way valve is located in the A2 cavity 1 6 The pressure is greater than that of the A0 cavity 14, the wave spring 703 and the valve plate 702 do not work and fit with the joint 701, the one-way valve does not open, and the valve bottom 10 maintains the pressure balance of the A3 cavity 17. When the shock absorber is in compression, the pressure of the A1 cavity 15 and the A2 cavity 16 is less than that of the A0 cavity 14, and the oil enters the solenoid valve-compression 12 from the A3 cavity 17 to the A4 cavity 18. The pressure of the A2 cavity 16 where the one-way valve is located is less than that of the A0 cavity 14. The valve plate 702 is in a negative pressure state, and the oil enters the A2 cavity 16 from the A0 cavity 14. The one-way valve opens to maintain the pressure balance of the A1 cavity 15.

[0021] The working principle and use process of the present invention are as follows: during compression, the piston rod 11 and the restoring valve assembly move downward and press into the inside of the shock absorber, the volume of the A3 cavity 17 decreases, the pressure increases, and the oil passes through the small hole below the working cylinder 4, passes through the A4 cavity 18 inside the separation oil cylinder-compression 9, and flows to the solenoid valve-compression 12 through the pilot valve seat 13. 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 cavity 14 of the oil storage cylinder assembly 5. At the same time, the volume of the A1 cavity 15 increases, and the pressure decreases. The oil in the A0 cavity 14 flows into the A2 cavity 16 through the one-way valve assembly 7, flows through the flow hole at the upper end of the working cylinder 4 and enters the A1 cavity 15, achieving pressure balance; During recovery, the piston rod 11 and the recovery valve assembly move upward. The piston rod is pulled out of the shock absorber, the volume of the A1 cavity 15 decreases, and the pressure increases. The oil will pass through the small hole above the working cylinder 4, through the A2 cavity 16 inside the separation cylinder-restoration 6, and through the one-way valve assembly 7 to the solenoid valve-restoration assembly 8. The oil passes through the solenoid valve-restoration assembly 8 and generates a corresponding restoring damping force according to the current input of the restoration solenoid valve. The oil flows out of the solenoid valve-restoration assembly 8 and enters the A0 cavity 14 of the oil storage cylinder assembly 5. At the same time, the volume of the A3 cavity 17 increases, and the pressure decreases. The liquid in the A0 cavity 14 is replenished to the A3 cavity 17 through the valve bottom 10 to achieve pressure balance. During the compression or restoration process, the oil enters the solenoid valve through the one-way valve assembly 7 / pilot valve seat 13 and is divided into two oil circuits. The first oil circuit passes through the valve seat 704 to form the first P1 oil cavity 805, and the second oil circuit passes through the return valve seat 802. The oil passing through the return valve seat 802 also forms two oil circuits, and the first oil circuit forms the second P2 oil cavity 80 6. The second oil circuit passes through the end cap 803 to form the third P3 oil chamber 807807, and then passes through the safety valve 804 to enter the fourth P4 oil chamber 808808. The P4 oil chamber 808808 is connected to the oil storage cylinder assembly 5. During the damping force generation process, the oil flows through the valve seat 704, the pilot valve seat, the return valve seat 802, the end cap 803, and reaches the P3 oil chamber 807. After being cut off by the safety valve 804, it reaches the P4 oil chamber 808. The solenoid valve can control the end cap 803. The contact distance with the return valve seat 802 affects the intercepting area. When the current is low, the end cap 803 is in the middle position, and its intercepting area is large. The safety valve 804 is in the open state, and the intercepting area increases. The pressure difference between the P3 oil chamber 807 and the P4 oil chamber 808 generates a low-speed damping force, which causes the pressure difference between the P2 oil chamber 806 and the P1 oil chamber 805 to increase. The sealing valve plate 801 is easier to open, and the P1 oil chamber 805 and the return valve seat 802 generate a high-speed damping force.When the current increases, the end cap 803 is at the lowest position and contacts the upper end of the return valve seat 802, and its intercepting area is the smallest. The pressure difference between the P3 oil chamber 807 and the P4 oil chamber 808 generates a low-speed damping force, which causes the pressure difference between the P2 oil chamber 806 and the P1 oil chamber 805 to decrease, making it more difficult to open the sealing valve plate 801. In this way, the P1 oil chamber 805 and the P2 oil chamber 806 generate a high-speed damping force. The one-way valve is integrated at the lower end of the solenoid valve-restoring component 8, wherein the one-way valve component 7 and the valve seat 704 are riveted with an O-ring seal in the middle, and the valve plate 702 seals the end face of the flow hole on the joint 701 to isolate the A0 cavity 14 and the A2 cavity 16 to prevent leakage. The wave spring 703 applies an axial force to the valve plate 702 to ensure the sealing effect. When the shock absorber is in recovery, the pressure of the A1 cavity 15 and the A2 cavity 16 is greater than that of the A0 cavity 14. , the oil enters the solenoid valve-reset assembly 8 from the A1 cavity 15 to the A2 cavity 16, the pressure of the A2 cavity 16 where the check valve is located is greater than the A0 cavity 14, the wave spring 703 and the valve plate 702 do not work and fit the joint 701, the check valve does not open, and the valve bottom 10 maintains the pressure balance of the A3 cavity 17. When the shock absorber is in compression, the pressure of the A1 cavity 15 and the A2 cavity 16 is less than that of the A0 cavity 14, the oil enters the solenoid valve-compression 12 from the A3 cavity 17 to the A4 cavity 18, the pressure of the A2 cavity 16 where the check valve is located is less than that of the A0 cavity 14, the valve plate 702 is in a negative pressure state, the oil enters the A2 cavity 16 from the A0 cavity 14, the check valve opens, and the pressure balance of the A1 cavity 15 is maintained. ;

[0022] 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.

[0023] 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 novel dual-solenoid valve shock absorber with controllable damping force, comprising a seal (1) and a solenoid valve-restoring assembly (8), characterized in that: The seal (1) is sealingly connected to the inner surface of the left end of the oil storage cylinder assembly (5); the right end surface of the seal (1) is bonded with an oil seal (2); the right side surface of the oil seal (2) is bonded with a guide seat (3); the right side outer wall of the guide seat (3) is sealingly connected to a working cylinder (4); the oil storage cylinder assembly (5) is provided with a one-way valve assembly (7) for connecting to a solenoid valve-recovery assembly (8); The one-way valve assembly (7) comprises a joint (701), a valve plate (702) is mounted on the upper end of the joint (701), a wave spring (703) is mounted on the upper end surface of the valve plate (702), and a valve seat (704) is fixedly connected to the upper end surface of the wave spring (703).

2. According to claim 1, a novel dual-solenoid valve shock absorber with controllable damping force is characterized in that: The solenoid valve-recovery assembly (8) comprises a sealing valve disc (801), a reflux valve seat (802), an end cap (803) and a safety valve (804); the lower end of the sealing valve disc (801) is mounted on the upper end surface of the valve seat (704); the reflux valve seat (802) is fixedly connected to the upper end surface of the sealing valve disc (801); the end cap (803) is mounted on the upper end surface of the reflux valve seat (802); and the safety valve (804) is fixedly connected to the upper end surface of the end cap (803).

3. The novel dual-solenoid valve shock absorber with controllable damping force according to claim 2 is characterized in that: A P4 oil chamber (808) is formed on both sides of the return valve seat (802), a P3 oil chamber (807) is formed between the return valve seat (802) and the end cap (803), a P2 oil chamber (806) is formed between the return valve seat (802) and the sealing valve plate (801), and a P1 oil chamber (805) is formed between the sealing valve plate (801) and the valve seat (704).

4. The novel dual-solenoid valve shock absorber with controllable damping force according to claim 1 is characterized in that: The outer wall of the working cylinder (4) is connected to a separation cylinder-recovery (6), a separation cylinder-compression (9) is arranged on the right side of the separation cylinder-recovery (6), a valve bottom (10) is installed on the right inner wall of the working cylinder (4), a pilot valve seat (13) for connecting to a solenoid valve-compression (12) is arranged on the outer wall of the oil storage cylinder assembly (5), and a piston rod (11) is slidably connected to the inner wall of the working cylinder (4).

5. The novel dual-solenoid valve shock absorber with controllable damping force according to claim 4 is characterized in that: An A3 cavity (17) is formed between the right side of the piston rod (11) and the working cylinder (4), and an A1 cavity (15) is formed between the left side of the piston rod (11) and the working cylinder (4).

6. The novel dual-solenoid valve shock absorber with controllable damping force according to claim 1 is characterized in that: An A0 cavity (14) is formed between the oil storage cylinder assembly (5) and the separation oil cylinder-recovery (6), and an A2 cavity (16) is formed between the separation oil cylinder-recovery (6) and the working cylinder (4).

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