Pressure feedback type damping self-adjusting energy feedback hydro-pneumatic suspension and working method

Abstract

The invention discloses a pressure feedback type damping self-adjusting energy feedback oil gas suspension and a working method, and belongs to the field of vehicle oil gas suspensions. The pressure feedback type damping self-adjusting energy feedback oil gas suspension comprises a first-stage small-range damping multi-stage adjuster, a second-stage large-range damping multi-stage adjuster and a one-way energy feedback and energy recovery system, an oil outlet of the first-stage small-range damping multi-stage regulator is connected with an oil inlet of the one-way energy feedback and energy recovery system through an oil inlet pipe, an oil outlet of the one-way energy feedback and energy recovery system is connected with an oil inlet of the first-stage small-range damping multi-stage regulator through an oil return pipe, and a throttling valve is arranged on the oil inlet pipe. And pipelines at the two ends of the two-stage large-range damping multi-stage regulator are arranged on the two sides of the throttle valve on the oil inlet pipe in parallel. The working number of damping holes of the suspension system can be changed, self-adaptive adjustment of damping of the suspension system under the condition that the stroke is changed is achieved, power equipment is not needed, and automatic damping adjustment can be achieved through a mechanical structure. And damping vibration attenuation energy consumption recovery is realized.

Description

Technical Field

[0001] The present invention belongs to the field of vehicle oil-gas suspension, and specifically relates to a pressure feedback damping self-regulating energy-feeding oil-gas suspension and a working method, which is particularly suitable for engineering vehicles with a large range of load changes and running on rough roads and complex road environments. Background Art

[0002] Existing oil-gas suspension achieves vibration reduction and support by combining the characteristics of gas and liquid. Its working principle is based on the interaction between oil and gas: the gas acts as an elastic element to provide restoring force, while the oil acts as a damping medium to control the vibration amplitude. Specifically, the suspension system consists of an air chamber and an oil damper. The gas in the air chamber provides elastic restoring force when compressed, while the oil generates damping force by flowing between the piston and the cylinder to suppress the vibration and impact of the vehicle body. By adjusting the gas pressure and oil flow, the oil-gas suspension can automatically adjust its stiffness and damping according to changes in load and road conditions, providing a smooth driving experience.

[0003] The existing oil-gas suspension has many shortcomings in working engineering because its internal structure is fixed during production and processing. The main shortcoming is the lack of real-time adjustment capability. Its stiffness and damping force are fixed and cannot be adaptively adjusted according to different road conditions, vehicle speeds or load changes. This may result in it not being able to provide sufficient comfort or stability on complex roads and being unable to effectively respond to sudden road changes. In addition, in order to balance comfort and handling under different working conditions, it is usually necessary to compromise between elasticity and damping, which makes it difficult to meet the optimal needs of both at the same time. At the same time, on flat roads, inappropriate damping force may cause the system to consume excessive energy, while under relatively stable driving conditions, the system may still consume unnecessary energy, increasing the vehicle's fuel consumption or power requirements. Summary of the invention

[0004] In view of the deficiencies in the prior art, a pressure feedback damping self-adjusting energy-feeding oil-gas suspension and a working method are provided. Through a built-in damping hole adjustment device in the suspension cylinder and an external pressure feedback damping regulator, adaptive adjustment of the suspension damping in a first-level small stroke range and a second-level large stroke range is achieved, with good shock absorption effect. The energy-feeding hydraulic system can also be used to recover the energy consumed by the suspension through the operation of a one-way valve and a hydraulic motor, and provide power for other electrical equipment of the vehicle.

[0005] In order to achieve the above technical objectives, the present invention adopts the following technical solutions:

[0006] A pressure feedback damping self-adjusting energy-feeding oil-gas suspension, comprising a first-stage small-range damping multi-stage regulator, a second-stage large-range damping multi-stage regulator and a one-way energy-feeding and energy-recovery system connected to each other by pipelines, wherein the oil outlet of the first-stage small-range damping multi-stage regulator is connected to the oil inlet of the one-way energy-feeding and energy-recovery system through an oil inlet pipe, and the oil outlet of the one-way energy-feeding and energy-recovery system is connected to the oil inlet of the first-stage small-range damping multi-stage regulator through an oil return pipe, wherein a throttle valve is arranged on the oil inlet pipe, and pipelines at both ends of the second-stage large-range damping multi-stage regulator are arranged in parallel on both sides of the throttle valve on the oil inlet pipe;

[0007] The first-stage small-range damping multi-stage regulator comprises a cylinder, wherein a cylinder top is provided at the top of the cylinder, and a cylinder bottom is provided at the bottom of the cylinder, wherein a piston structure is provided in the cylinder and a floating piston that can move in the cylinder, and a hole is opened at the bottom of the cylinder, and a piston rod whose end is threadedly connected to the floating piston is provided at the opening of the cylinder bottom through a sealing piston, thereby dividing the space in the cylinder into a rodless chamber a and a rod chamber, and a fixed damping hole is provided on the piston rod to communicate between the rodless chamber a and the rod chamber; the rod chamber is connected to the rod chamber accumulator through a pipeline; wherein the active A rodless chamber b is provided inside the plug rod, a hole is opened at the end of the piston rod and communicates with the rodless chamber b, a series damping device is connected to the top of the cylinder and is inserted into the hole at the end of the piston rod and enters the rodless chamber b, the series damping device is a sealed hollow columnar structure, and damping holes arranged at unequal intervals are opened on the side wall of the series damping device, the closer the damping holes are to the middle of the series damping device, the smaller the interval between the damping holes is, and the damping effect and vibration reduction effect are generated in the process of oil flowing between the rodless chamber and the rod chamber through the damping holes arranged at unequal intervals;

[0008] The two-stage wide-range damping multi-stage regulator comprises a valve body, an upper cover plate is arranged on the top of the valve body, and a lower cover plate is arranged on the bottom of the valve body; two valve slots are arranged in parallel from top to bottom in the valve body, and two valve core assemblies which do not affect each other and have the same structure are arranged in the two valve slots, and the valve core assembly comprises a stiffness spring, a valve core, a guide rod, and a pressure comparison piston which are arranged in sequence from top to bottom, wherein the stiffness spring in the valve core assembly on the left is stiffness spring a, and the stiffness spring in the valve core assembly on the right is stiffness spring b, and the stiffness k of stiffness spring b is less than the stiffness k of stiffness spring a; the outer diameter of stiffness spring a is the same as that of stiffness spring b; a flow channel d is opened in the valve body at the position of the valve core in the valve core assembly on the left, and a flow channel a is opened in the valve body at the position of the valve core in the valve core assembly on the right, and a flow channel c connecting the two is opened in the valve body at the position of the guide rod in the two valve core assemblies, and the two valve core assemblies Below the medium pressure comparison piston, a flow channel b is opened in the valve body to connect the two. When the oil at both ends of the throttle valve is introduced into the flow channel c and the flow channel b, it acts on the upper and lower sections of the pressure comparison piston, and the pressure difference generates a force, causing the spring a to compress or stretch, thereby driving the valve core on the left to move up and down, making the flow channel d conductive, and the oil flows through the flow channel d, thereby generating a damping effect. The oil enters the flow channel c and the flow channel b only for pressure difference comparison. The upper valve core will move according to the movement of the lower pressure comparison piston, and when the displacement is large enough, the flow channel d will open. Since the stiffness of the stiffness spring a is similar to that of the stiffness spring b, the starting pressure difference of the flow channel a and the flow channel d is different. Therefore, there will be three states: the flow channel d and the flow channel a are closed at the same time, the flow channel d is closed, the flow channel a is opened, and the flow channel d and the flow channel a are opened at the same time, which are three different damping modes.

[0009] The one-way energy feeding and energy recovery system comprises an oil steering gear for controlling the flow direction of oil, the oil steering gear is connected with an energy feeding device and a rodless chamber accumulator, and the energy feeding device is connected with a battery pack through a generator.

[0010] Furthermore, the left port of flow channel d, the port of flow channel c, and the left port of flow channel a are respectively connected to the left oil inlet pipe of the throttle valve, and the right port of flow channel d, the right port of flow channel a, and the port of flow channel b are respectively connected to the right oil inlet pipe of the throttle valve.

[0011] Furthermore, the oil outlet of the first-stage small-range damping multi-stage regulator is arranged on the top of the cylinder and connected to the rodless chamber a, and the oil inlet of the first-stage small-range damping multi-stage regulator is arranged on the bottom of the cylinder and connected to the rod chamber and the rod chamber accumulator.

[0012] Furthermore, the oil steering gear of the one-way energy feeding and energy recovery system is composed of four classic groups of one-way valves, including one-way valve a, one-way valve b, one-way valve c, and one-way valve d; the four groups of one-way valves control the flow direction of the oil so that the oil flows through the energy feeding device in only one direction. The one-way rotation of the energy feeding device drives the generator to generate electricity, and the electricity is stored in the battery pack for power generation for on-board equipment.

[0013] Furthermore, the energy feeding device includes a pancake-shaped shell, and the upper and lower tangents of the shell are respectively provided with an oil inlet and an oil outlet. A rotor is provided at the center of the shell, and a plurality of blades arranged at equal intervals are provided on the rotor, and a counterweight is provided between the blades and the rotor; after the oil enters the shell through the oil inlet, it acts on the blade surface of the blade, driving the rotor to rotate, and then driving the generator to generate electricity, and the hydraulic energy in the hydraulic system is converted into electrical energy.

[0014] Furthermore, the blades include two cranks whose tails are connected to both sides of the rotor central axis through springs, and the ends of the cranks are connected to telescopic blades with variable areas through connecting rods, and the telescopic blades include fixed blades with fixed positions and movable blades that can slide and retract on the tops of the fixed blades, and the fixed blades are connected to the movable blades through guide rail grooves; wherein the fixed blades are fixed in position, and the ends of the cranks are movably connected to the movable blades through connecting rods, and the movable blades are slid and retracted on the guide rail grooves by rotating the connecting rods through the cranks, and the contact area between the entire blade and the incoming flow is changed by adjusting the extended length of the movable blades, and the force of the oil on the blades is changed, thereby changing the rotation speed of the energy feeding device; and the rotation speed of the rotor is ensured to be constant by dynamically adjusting the extended length of the movable blades, so that the additional damping generated is constant;

[0015] When the speed increases, the centrifugal force generated by the rotation of the energy feeding device increases, and the centrifugal force stretches the spring, thereby causing the crank to move from an angle with the horizontal direction to a horizontal state, and the connecting rod is pulled downward by the crank, thereby moving downward along the guide groove, causing the movable blades to shrink inward, thereby reducing the effect of oil on the blades, thereby reducing the speed of the rotor; the mass of the counterweight is much larger than the mass of the movable blades, and the large mass of the counterweight is used to pull the movable blades during rotation to change the position of the movable blades; when the speed is low, the amount of spring expansion and contraction decreases, and the movable blades are pulled by the crank and connecting rod to remain in an extended state, increasing the area of ​​oil acting on the blades, increasing the speed of the energy feeding device, and dynamically adjusting the oil action area of ​​the blades to keep the speed of the energy feeding device constant, thereby ensuring that the damping generated by the rotation of the energy feeding device is constant.

[0016] Furthermore, the movable blade is connected to a movable blade connecting piece, and the movable blade is extended or retracted by the movable blade connecting piece moving linearly in the guide rail groove along the guide rail direction.

[0017] Furthermore, in the crank-connecting rod structure diagram, a U-shaped groove is provided at the end of the crank to ensure that the connecting rod has sufficient space for movement; the front end of the crank is connected to the connecting rod through a pin a, and a clearance is left to enable the crank to slide on the end of the connecting rod.

[0018] Furthermore, a hole is processed on the side of the rotor, and the rear end of the connecting rod passes through the through hole opened on the side through the pin shaft b to cooperate with the hole on the side of the rotor, thereby restricting the connecting rod to a fixed position so that under the action of centrifugal force, it can only rotate at the position of the pin shaft b and will not move.

[0019] A working method of a pressure feedback damping self-regulating energy-feeding oil-gas suspension, wherein a first-level small-range damping multi-stage regulator is used as a vehicle shock-absorbing spring or oil-gas suspension, a one-way energy-feeding and energy-recovery system replaces a traditional suspension energy-feeding device, and a second-level large-range damping multi-stage regulator is installed on a vehicle chassis; the first-level small-range damping multi-stage regulator, the second-level large-range damping multi-stage regulator and the one-way energy-feeding and energy-recovery system pipeline are connected;

[0020] Here are the steps:

[0021] When the vehicle passes a raised obstacle during normal driving, the piston rod in the first-stage small-range damping multi-stage regulator is compressed, and the oil flows in the cylinder from the oil inlet at the bottom of the cylinder through the pipeline into the rod chamber in sequence, then into the rodless chamber b through the fixed damping hole on the piston rod, and then into the rodless chamber a through a series of damping devices, and finally out from the oil outlet on the top of the cylinder; after the oil flows out from the oil outlet on the top of the cylinder, it flows through the throttle valve in the second-stage large-range damping multi-stage regulator, and then flows into the one-way energy feedback and energy recovery System; in the one-way energy feeding and energy recovery system, the oil first flows into the one-way valve, flows into the generator from the upper side of the energy feeding device, and flows out from the lower side, and finally flows through the oil circuit on the lower side of the secondary large-range damping multi-stage regulator from the one-way valve, returns to the oil inlet at the bottom of the cylinder in the primary small-range damping multi-stage regulator, and flows into the rod chamber; when the flow channel and the flow channel in the secondary large-range damping multi-stage regulator are opened, the oil flows through the flow channel a and the flow channel b at the same time, and forms three independent flow channels in parallel with the oil flowing through the throttle valve (28);

[0022] When a vehicle passes through a concave road surface during normal driving, the piston in the first-stage small-range damping multi-stage regulator is stretched, and the flow direction of the oil is opposite to that when passing through a raised obstacle, and shock absorption is also achieved; the shock absorption process of the first-stage small-range damping multi-stage regulator and the second-stage large-range damping multi-stage regulator is reflected by the damping effect generated when the oil passes through a series of damping devices, damping holes and flow channels, and flow channels.

[0023] The one-way energy feedback and energy recovery system utilizes the movement of oil to drive the blades to rotate at a constant speed to drive the rotor to generate electricity, converting hydraulic energy into mechanical energy, and then converting mechanical energy into electrical energy, thereby achieving the effect of energy storage and energy feedback.

[0024] Compared with the prior art, the present invention adopts the above technical solution and has the following technical effects:

[0025] 1) The device has a series of built-in damping devices, which changes the traditional internal fixed damping structure and realizes the adjustment of suspension damping; 2) A two-stage large-range damping multi-stage regulator is designed to achieve further change and adjustment of suspension damping through the pressure difference effect; 3) The energy feeding device in the device includes a speed adaptive adjustment mechanism to ensure that the additional damping generated by the energy feeding system is constant; 3) The first-stage small-range damping multi-stage regulator and the second-stage large-range damping multi-stage regulator in the device do not need to be equipped with external power equipment, and damping adjustment can be achieved through mechanical structure; 4) The device realizes the recovery of suspension damping vibration reduction energy consumption, which reduces the energy loss of the system;

[0026] The first-stage small-range damping multi-stage regulator of the present invention uses a variable damping hole number structure of a series of damping devices, so that when the suspension stroke changes, the working number of the damping holes of the suspension system is changed, and then the damping of the suspension system is adaptively adjusted in a small range when the stroke changes; the second-stage large-range damping multi-stage regulator uses a pressure comparison device structure, so that when the suspension piston rod moves too fast, that is, when the shock absorption effect cannot be guaranteed, the number of flow channels connected to the suspension system is increased, and the suspension damping performance is further improved to achieve a larger range of vibration reduction effect; the one-way energy feeding and energy recovery system uses a crank-connecting rod mechanism to achieve adaptive adjustment of the blade effective area and the rotor speed, so that when the flow rate changes, the rotor speed can be relatively constant, ensuring the constancy of the additional damping; the vibration reduction effect is changed by changing the liquid flow resistance. When the flow rate flowing through the energy feeding device changes, a relatively stable speed can be maintained, that is, the additional damping generated will not change. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 The main structure and principle diagram of the pressure feedback damping self-adjusting energy-feeding oil-gas suspension of the present invention;

[0028] Figure 2 This is a structural diagram of a one-stage small-range damping multi-stage regulator of the present invention;

[0029] Figure 3 It is a structural diagram of the piston rod of the present invention;

[0030] Figure 4 It is a structural diagram of a series of damping devices of the present invention;

[0031] Figure 5 It is a three-dimensional structural diagram of the two-stage large-range damping multi-stage regulator of the present invention;

[0032] Figure 6a It is a structural diagram of the two-stage wide-range damping multi-stage regulator of the present invention;

[0033] Figure 6bIt is a schematic diagram of the oil flow in the two-stage wide-range damping multi-stage regulator of the present invention;

[0034] Figure 7 It is a schematic diagram of the one-way energy feeding and energy recovery system of the present invention;

[0035] Figure 8 It is a working flow chart of the one-way energy feeding and energy recovery system of the present invention;

[0036] Fig. 9 It is a working flow chart of the one-way energy feeding and energy recovery system of the present invention;

[0037] Fig.10 This is a diagram of the energy feeding device of the present invention;

[0038] Fig.11 This is a structural diagram of the adjustable blade of the present invention;

[0039] Fig.12 It is the principle diagram of the adjustable blade of the present invention;

[0040] Fig.13 It is a structural diagram of the guide rail blade of the present invention;

[0041] Fig.14 It is a structural diagram of a crank connecting rod of the present invention;

[0042] Fig.15 This is a structural diagram of the connecting rod rotor of the present invention.

[0043] In the figure: 1. a first-stage small-range damping multi-stage regulator, 2. a second-stage large-range damping multi-stage regulator, 3. a one-way energy feeding and energy recovery system, 4. a first-stage small-range damping multi-stage regulator is composed of a cylinder top, 5. a cylinder barrel, 6. a floating piston, 7. a series of damping devices, 8. a fixed damping hole, 9. a piston rod, 10. a cylinder bottom, 11. a sealing piston, 12. a rodless chamber a, 13. a rodless chamber b, 14. a rod chamber, 15. a rod chamber accumulator, 16. an upper cover plate, 17. a valve body, 18. a flow channel a, 19. a valve core, 20. a guide rod, 21. a pressure comparison piston, 22. a flow channel b, 23. a lower Cover plate, 24, flow channel c, 25, flow channel d, 26, stiffness spring a, 27, stiffness spring b, 28, throttle valve, 29, one-way valve a, 30, one-way valve b, 31, rodless chamber accumulator, 32, battery pack, 33, generator, 34, energy feeding device, 35, one-way valve c, 36, one-way valve d, 37, oil inlet, 38, shell, 39, rotor, 40, counterweight, 41, blade, 42, oil outlet, 43, movable blade, 44, movable blade connecting piece, 45, fixed blade, 46, spring, 47, crank, 48, connecting rod, 49, pin a, 50, pin b. DETAILED DESCRIPTION

[0044] The embodiments of the present invention will be further described below in conjunction with the accompanying drawings:

[0045] like Figure 1 As shown, the present invention discloses a pressure feedback damping self-regulating energy-feeding oil-gas suspension, comprising a first-level small-range damping multi-stage regulator 1, a second-level large-range damping multi-stage regulator 2, and a one-way energy-feeding and energy-recovery system 3 connected to each other by pipelines; the red arrow in the figure indicates the flow direction of the oil;

[0046] The first-stage small-range damping multi-stage regulator 1 is composed of a cylinder top 4, a cylinder barrel 5, a floating piston 6, a series damping device 7, a fixed damping hole 8, a piston rod 9, a cylinder bottom 10, and a sealing piston 11. During the stretching stroke, the oil flows into the rodless chamber a12 through the oil channel opened in the cylinder top 4. The series damping device 7 is a hollow device. The oil flows into the rodless chamber a12 through the damping hole on the series damping device 7, and flows out from the lower damping hole to the rodless chamber b13. The piston rod 9 is also processed with a fixed damping hole 8. The oil flows into the rod chamber 14 from the rodless chamber b13 through the fixed damping hole 8 again, and finally flows out of the suspension cylinder through the flow channel gap on the cylinder bottom 10. The rod chamber accumulator 15 plays a role in supporting and preventing the suspension stroke from bottoming out during the working process. During the compression stroke, the flow direction of the oil is opposite to that during the stretching stroke. The oil passes through multiple damping holes in the oil cylinder, and the damping effect is used to achieve vibration reduction of the oil-gas suspension. In addition, the cylinder top 4 is connected to the cylinder bottom 10 and the cylinder barrel by bolts, the floating piston 6 is connected to the piston rod 9 by threads, and the series damping device 7 is vertically inserted into the piston rod. As the suspension stroke changes, the floating piston 6 moves up and down in the cylinder barrel, and the damping holes on the series damping device 7 that overlap with the floating piston 6 are isolated, and the oil cannot flow. When different strokes are achieved, the number of damping holes and the flow area connected to the suspension system change, and the suspension damping is changed. In addition, the damping holes on the series damping device 7 gradually become denser from top to bottom, so that when the suspension form becomes larger, the system damping force becomes larger. That is, when the road surface unevenness becomes larger, the suspension can provide a larger damping characteristic to meet the requirements for improving the vibration reduction performance. Since the flow area of ​​the damping holes on the series damping device 7 is small and the number of adjustable damping holes is relatively limited, damping adjustment within a small range can be achieved.

[0047] The two-stage wide-range damping multi-stage regulator 2 is composed of an upper cover plate 16, a valve body 17, a valve core 19, a guide rod 20, a pressure comparison piston 21, a lower cover plate 23, a large stiffness spring 26, and a small stiffness spring 27. The valve body 17 is provided with flow channels 18, 22, 24, and 25. By introducing the oil before and after the throttle valve 28 in the main oil circuit into the flow channels 22 and 24, the oil acts on the upper and lower piston surfaces of the pressure comparison piston 21, generating a force on the pressure comparison piston 21. When the pressure difference before and after the throttle valve 28 is large enough, the force generated on the pressure comparison piston 21 can overcome the stiffness force of the springs 26 and 27 connected to the lower end, so that the springs 26 and 27 are compressed or stretched, thereby realizing the up and down movement of the pressure comparison piston 21. The upper end of the pressure comparison piston 21 is connected to the guide rod 20, and the other end of the guide rod 20 is connected to the valve core 19. The up and down movement of the pressure comparison piston 21 can realize the up and down movement of the valve core 19, thereby realizing the opening and closing of the oil passage 18 and the oil passage 25. The oil flowing through the passage 18 and the oil passage 25 can further realize the damping effect of the oil, thereby further improving the damping performance of the system and achieving more significant vibration reduction performance.

[0048] In addition, the two-stage wide-range damping multi-stage regulator 2 is equipped with two groups of springs with different stiffness, namely spring 26 and spring 27. The stiffness of spring 27 is smaller than that of spring 26. When the road surface roughness is small, only spring 27 is compressed or stretched, and only one pressure comparison piston works. At this time, the system damping is in a small state. As the road surface roughness increases, spring 26 is also stretched or compressed, and the two pressure comparison pistons work at the same time, and the system reaches a state of maximum damping.

[0049] The one-way energy feeding and energy recovery system 3 is composed of a one-way valve 29, a one-way valve 30, a rodless chamber accumulator 31, a battery pack 31, a generator 32, an energy feeding device 34, a one-way valve 35, and a one-way valve 36. Through the one-way conduction of the one-way valve, the oil flows through the energy feeding device 34 in only one direction, and the energy feeding device 34 rotates to drive the generator 33 to generate electricity, and the electricity is stored in the battery pack 31. The rodless chamber accumulator 31 absorbs energy and prevents the suspension oil cylinder from touching the top during operation.

[0050] In addition, the energy feeding device 34 is composed of an oil inlet 37, a housing 38, a rotating shaft 39, a blade 40, and an oil outlet 41. By changing the extension length of the blade 40, the area of ​​the oil impacting the blade is changed, thereby realizing the adaptive adjustment of the speed of the energy feeding device 34, ensuring that the speed of the energy feeding device 34 is constant during operation, thereby ensuring that the damping generated by the energy recovery system is constant.

[0051] During operation of the oil-gas suspension, the piston rod 9 is stimulated by the road surface to reciprocate in the cylinder 5, causing the oil to flow back and forth in the rodless chamber a12, the rodless chamber b13, the rod chamber 14, and the external two-stage large-range damping multi-stage regulator 2, the one-way energy feedback and energy recovery system 3, and the oil pipe, thereby achieving self-adaptation of the suspension vibration reduction performance through the damping devices in each mechanism.

[0052] like Figure 2 As shown, the first-stage small-range damping multi-stage regulator includes a cylinder top 4, a cylinder barrel 5, a floating piston 6, a series damping device 7, a fixed damping hole 8, a piston rod 9, a cylinder bottom 10, and a sealing piston 11; the cylinder top 4 and the cylinder bottom 10 are respectively connected to the cylinder barrel 5 by bolts. The floating piston 6 is connected to the piston rod 9 by threads. The rod chamber accumulator 15 plays a role in supporting and preventing the suspension stroke from bottoming out during operation. Taking the stretching stroke as an example, the flow direction of the oil in the oil cylinder is the oil channel in the cylinder top 4-rodless chamber a12-series damping device 7-rodless chamber b13-fixed damping hole 8-rod chamber 14-cylinder bottom 10-middle flow channel. The flow direction of the oil in the compression stroke is opposite to that of the stretching stroke. During the flow process, the series damping holes on the series damping device 7 and the fixed damping hole 8 play a role in damping and vibration reduction.

[0053] like Figure 3 As shown, a fixed damping hole 8 is designed on the piston rod 9, which can realize the flow of oil between the rodless chamber b13 and the rod chamber 14 to produce a damping effect. Since the damping hole on the piston rod 9 is of a fixed size, it produces a fixed vibration reduction effect.

[0054] like Figure 4 As shown, the series damping device 7 is provided with damping holes 7-1 arranged at unequal intervals. When it moves back and forth in the piston rod 9, due to the blocking effect of the floating piston 6, the number of damping holes connected to the system at each position changes. The change in the number of damping holes causes the area of ​​the damping holes connected to the system to change, thereby achieving different damping characteristics. In addition, the damping holes on the series damping device 7 are arranged sparsely at both ends and densely in the middle. When compressed or stretched to the maximum travel of the suspension, that is, when the road condition is bad, the maximum damping characteristics are guaranteed, thereby achieving the best vibration reduction performance.

[0055] like Figure 6a As shown, the two-stage wide-range damping regulator includes an upper cover plate 16, a valve body 17, a valve core 19, a guide rod 20, a pressure comparison piston 21, a lower cover plate 23, a large stiffness spring 26, and a small stiffness spring 27; the valve body 17 is provided with flow channels a18, flow channels b22, flow channels c24 and flow channels d25. Figure 6bThe red arrow solid line represents the flow diagram of oil. The pressure difference before and after the throttle valve 28 in the main oil circuit is directed to the flow channel 22 and the flow channel 24. The pressure p1 and p2 at the two locations act on the upper and lower piston surfaces of the pressure comparison piston 21 to generate a force. When the pressure difference between the two flow channels is large enough, the force generated on the pressure comparison piston 21 overcomes the stiffness force of the springs 26 and 27 connected at the lower end, and then moves up and down. The up and down movement of the pressure comparison piston 21 can realize the up and down movement of the valve core 19, so that the flow channel 18 and the flow channel 25 can circulate.

[0056] The stiffness of spring 27 is smaller than that of spring 26. When the difference between p1 and p2 is small, that is, when the road surface roughness is small, the force generated is only the compression or extension of spring 27, and only the valve core on the right moves to open the flow channel here, and flow channel 18 flows, and the oil flows into the main oil circuit through the vertical flow channel above. At this time, the system damping is in a small state. As the road surface roughness increases, spring 26 is also stretched or compressed, and the two valve cores move at the same time, and flow channel 25 flows. At this time, the system reaches the state of maximum damping. In addition, sealing rings are installed on the guide rod 20 and the pressure comparison piston 21 to prevent the oil in each flow channel from flowing.

[0057] like Figure 7 As shown, the one-way energy feeding and energy recovery system 3 is composed of a one-way valve a29, a one-way valve b30, a rodless chamber accumulator 31, a battery pack 32, a generator 33, an energy feeding device 34, a one-way valve c35, and a one-way valve d36. The four groups of one-way valves control the flow direction of the oil so that the oil flows through the energy feeding device 34 in only one direction. The one-way rotation of the energy feeding device 34 drives the generator 33 to generate electricity, and the electricity is stored in the battery pack 32 for power generation of vehicle-mounted equipment.

[0058] Figure 8 It is the oil flow direction of the one-way energy feedback and energy recovery system during the compression stroke. Fig. 9 For the stretching stroke, Figure 8 and Fig. 9 The red line in the middle is the flow direction of the oil. When in the compression stroke, the oil flows from the secondary large-range damping regulator into the one-way valve 30, flows into the motor from the upper side of the energy feeding device 34, flows out from the lower side, and finally flows back to the rod chamber 14 of the suspension cylinder in the primary small-range damping multi-stage regulator through the one-way valve 36; when in the extension stroke, the oil flows from the rod chamber 14 of the suspension cylinder in the primary small-range damping multi-stage regulator into the one-way valve 35, and also flows into the motor from the upper side of the energy feeding device 34, flows out from the lower side, and finally flows back to the secondary large-range damping regulator through the one-way valve 29. Therefore, whether in the extension or compression stroke, the energy feeding device 34 always enters the oil from the upper side and discharges the oil from the lower side, ensuring that the direction of the energy feeding device 34 is constant, thereby driving the generator 33 to generate electricity and ensuring the power supply of other equipment in the vehicle.

[0059] like Fig.10 As shown, the energy feeding device 34 is composed of an oil inlet 37, a housing 38, a rotor 39, a counterweight 40, a blade 41, and an oil outlet 42. Under the action of the one-way valve in the hydraulic system, the oil always enters the energy feeding device through the oil inlet 37, acts on the blade surface of the blade 41, drives the rotor 39 to rotate, and then drives the generator 33 to generate electricity, and the hydraulic energy in the hydraulic system is converted into electrical energy.

[0060] like Fig.11 As shown, the blade 41 is composed of a movable blade 43, a movable blade connector 44, a fixed blade 45, a spring 46, a crank 47, and a connecting rod 48. Considering that the rotation speed of the energy feeding device will have an additional impact on the damping of the overall suspension system, the rotation speed of the energy feeding device should be kept constant as much as possible, so as to ensure that the additional damping generated during the operation of the energy feeding device is constant. The device can adjust the extension length of the movable blade 43, thereby changing the contact area between the blade and the incoming flow, changing the force of the oil on the blade, and thus changing the rotation speed of the energy feeding device. When the rotation speed is high, the centrifugal force generated by the rotation of the energy feeding device is large, so that the spring 46 is stretched, and then the crank 47 approaches the horizontal, and the connecting rod 48 is pulled downward, thereby driving the movable blade connector 44 to move downward, so that the extension length of the movable blade 41 is reduced, and then the area of ​​the oil acting on the blade is reduced, the force is reduced, and the rotation speed of the energy feeding device is reduced. The counterweight 40 is made of a material with a relatively high density, so that its mass is much greater than the mass of the movable blade 43, and the centrifugal force generated is greater than the centrifugal force generated by the movable blade 43, so that the extension length of the movable blade 43 can be changed.

[0061] When the speed is too low, the spring expansion is small, the extension length of the movable blade 43 increases, and the speed of the energy feeding device can be increased. According to this principle, the speed of the energy feeding device is controlled within a relatively stable range, thereby ensuring that the damping generated by the rotation of the energy feeding device is constant.

[0062] Fig.12 The schematic diagram of the working process of the position adaptive adjustment of the movable blade 43 is shown in FIG. The spring 46 has an initial preload force F n , the direction is inward along the rotor radius; the movable blades 43 and the counterweight 40 generate centrifugal forces F1 and F2 during the rotation process, the direction is outward along the rotor radius. When the speed is low, F n > F2, the spring 46 is not stretched, so there is no change in the mechanism. Assuming the rotor rotates at a speed of ω, the movable blade 43 generates a centripetal force F1 outward along the radial direction of the rotor, and its magnitude is m1ω 2 r; The counterweight 40 generates a centripetal force F2 outward along the rotor radius, whose magnitude is m2ω 2 r. Since the mass m1 of the counterweight 40 is much greater than the mass m2 of the movable blade 43, F2>F1. When the rotation speed ω is large enough, F2>Fn , and F2>F1 always holds true, so the counterweight 40 overcomes the initial preload of the spring 46, causing the spring 46 to be stretched, and the counterweight 40 is thrown out along the radial direction of the rotor, and the crank 47 rotates clockwise around the fixed point O, thereby driving the connecting rod 48 and the movable blade 43 to retract inward, and the extended length of the movable blade 43 is reduced, reducing the effective area of ​​the blade, thereby reducing the speed. When the speed is reduced to a certain extent, that is, F n After it is greater than F2 again, the spring 46 begins to contract, thereby pulling the counterweight 40 inward along the rotor radius, and the crank 47 rotates counterclockwise around the fixed point O, the connecting rod 48 and the movable blade 43 are pushed out again, and the extended length of the movable blade 43 increases, increasing the effective area of ​​the blade, thereby increasing the rotation speed.

[0063] Fig.13 This is a structural diagram of the guide rail blade. I-shaped guide rail grooves are added on both sides of the fixed blade 45. The movable blade connecting piece 44 is also designed to be I-shaped, sliding into the guide rail from the end of the guide rail groove. The movable blade connecting piece 44 is connected to the movable blade 43. The movable blade connecting piece 44 moves linearly along the guide rail direction in the guide rail groove to realize the extension or retraction of the movable blade.

[0064] Fig.14 The crank-connecting rod structure diagram shows that a U-shaped groove is provided at the end of the connecting rod 48. The front end of the crank 47 is connected to the connecting rod 48 through a pin a49, and a certain gap is left to allow the crank 47 to slide on the end of the connecting rod 48.

[0065] Fig.15 This is a connecting rod rotor structure diagram. A hole is processed on the side of the rotor 39. The rear end of the connecting rod 48 passes through the through hole opened on the side through the pin shaft b50 and cooperates with the hole on the side of the rotor 39, restricting the connecting rod 48 to a fixed position so that under the action of centrifugal force, it can only rotate at the position of the pin shaft b50 and will not move.

[0066] A working method of a pressure feedback damping self-regulating energy-feeding oil-gas suspension, wherein a first-level small-range damping multi-stage regulator 1 is used as a vehicle shock-absorbing spring or oil-gas suspension, a one-way energy-feeding and energy-recovery system 3 replaces a traditional suspension energy-feeding device, and a second-level large-range damping multi-stage regulator 2 is installed on a vehicle chassis; the first-level small-range damping multi-stage regulator 1, the second-level large-range damping multi-stage regulator 2 and the one-way energy-feeding and energy-recovery system 3 are connected by pipelines; the steps are as follows:

[0067] When the vehicle passes a raised obstacle during normal driving, the piston rod 9 in the first-stage small-range damping multi-stage regulator 1 is compressed, and the oil flows in the oil cylinder in the direction of the oil inlet in the cylinder bottom 10 through the pipeline into the rod chamber 14 in sequence, and then into the rodless chamber b13 through the fixed damping hole 8 on the piston rod 9, and then into the rodless chamber a12 through the series damping device 7, and finally out from the oil outlet of the cylinder top 4; after the oil flows out from the oil outlet of the cylinder top 4, it flows through the throttle valve 28 in the second-stage large-range damping multi-stage regulator 2, and then flows into the one-way energy feedback and energy return Energy recovery system 3; in the one-way energy feeding and energy recovery system 3, the oil first flows into the one-way valve 30, flows into the generator 33 from the upper side of the energy feeding device 34, and flows out from the lower side, and finally flows through the oil circuit on the lower side of the secondary large-range damping multi-stage regulator 2 by the one-way valve 36, returns to the oil inlet of the cylinder bottom 10 in the primary small-range damping multi-stage regulator 1, and flows into the rod chamber 14; when the flow channel 18 and the flow channel 25 in the secondary large-range damping multi-stage regulator 2 are opened, the oil also flows through the flow channel 18 and the flow channel 25, and forms three independent flow channels with the oil flowing through the throttle valve 28.

[0068] When the vehicle passes through a concave road surface during normal driving, the piston 9 in the first-stage small-range damping multi-stage regulator 1 is stretched, and the flow direction of the oil is opposite to that when passing through a raised obstacle, and shock absorption is also achieved; the shock absorption process of the first-stage small-range damping multi-stage regulator 1 and the second-stage large-range damping multi-stage regulator 2 is reflected by the damping effect generated when the oil passes through the series damping device 7, the damping hole 8, the flow channel 18, and the flow channel 25 in sequence.

[0069] The one-way energy feeding and energy recovery system 3 utilizes the movement of oil to drive the blades 41 to rotate at a constant speed to drive the rotor 39 to generate electricity, convert hydraulic energy into mechanical energy, and then convert mechanical energy into electrical energy, thereby realizing the function of energy storage and energy feeding.

Claims

1. A pressure feedback damping self-adjusting energy-feeding oil-gas suspension, characterized in that: The invention comprises a first-stage small-range damping multi-stage regulator (1), a second-stage large-range damping multi-stage regulator (2) and a one-way energy feeding and energy recovery system (3) which are interconnected by pipelines, wherein the oil outlet of the first-stage small-range damping multi-stage regulator (1) is connected to the oil inlet of the one-way energy feeding and energy recovery system (3) via an oil inlet pipe, and the oil outlet of the one-way energy feeding and energy recovery system (3) is connected to the oil inlet of the first-stage small-range damping multi-stage regulator (1) via an oil return pipe, wherein a throttle valve (28) is arranged on the oil inlet pipe, and pipelines at both ends of the second-stage large-range damping multi-stage regulator (2) are arranged in parallel on both sides of the throttle valve (28) on the oil inlet pipe; A first-stage small-range damping multi-stage regulator (1) comprises a cylinder (5), wherein a cylinder top (4) is provided at the top of the cylinder (5), and a cylinder bottom (10) is provided at the bottom of the cylinder (5), wherein a piston structure is provided in the cylinder (5) and a floating piston (6) that can move in the cylinder (5), and a hole is opened in the cylinder bottom (10), and a piston rod (9) whose end is threadedly connected to the floating piston (6) through a sealing piston (11) is provided in the opening of the cylinder bottom (10), thereby dividing the space in the cylinder (5) into a rodless chamber a (12) and a rod chamber (14), and a fixed damping hole (8) is provided on the piston rod (9) to connect the rodless chamber a (12) and the rod chamber (14); the rod chamber (14) is connected to the rod chamber reservoir via a pipeline. Energy device (15); wherein a rodless chamber b (13) is provided inside the piston rod (9), a hole is opened at the end of the piston rod (9) and communicates with the rodless chamber b (13), and a series damping device (7) is connected to the cylinder top (4) and is inserted into the hole at the end of the piston rod (9) and enters the rodless chamber b (13), the series damping device (7) is a sealed hollow columnar structure, and damping holes (7-1) arranged at unequal intervals are opened on the side wall of the series damping device (7), and the closer the damping holes (7-1) are to the middle of the series damping device (7), the smaller the interval between them is, and the damping holes (7-1) arranged at unequal intervals are used to generate damping effect and vibration reduction effect in the process of oil flowing between the rodless chamber (13) and the rod chamber (14); The two-stage wide-range damping multi-stage regulator (2) comprises a valve body (17), the top of the valve body (17) is provided with an upper cover plate (16), and the bottom of the valve body (17) is provided with a lower cover plate (23); two valve slots are arranged side by side from top to bottom in the valve body (17), and two valve core assemblies that do not affect each other and have the same structure are arranged in the two valve slots, and the valve core assembly comprises a stiffness spring, a valve core (19), a guide rod (20), and a pressure comparison piston (21) arranged in sequence from top to bottom, wherein the stiffness spring in the left valve core assembly is stiffness spring a (26), and the stiffness spring in the right valve core assembly is stiffness spring a (26). The stiffness spring is a stiffness spring b (27), and the stiffness k1 of the stiffness spring b (27) is smaller than the stiffness k2 of the stiffness spring a (26); the outer diameters of the stiffness spring a (26) and the stiffness spring b (27) are the same; in the valve core assembly on the left, the valve core (19) is located in the valve body (17) and a flow channel d (25) is opened; in the valve core assembly on the right, the valve core (19) is located in the valve body (17) and a flow channel a (18) is opened; in the two valve core assemblies, the guide rod (20) is located in the valve body (17) and a flow channel c (24) connecting the two is opened; the two valve core assemblies A flow channel b (22) is provided in the valve body (17) below the pressure comparison piston (21) to connect the two. When the oil at both ends of the throttle valve (28) is introduced into the flow channel c (24) and the flow channel b (22), it acts on the upper and lower sections of the pressure comparison piston (21), and the pressure difference generates a force, causing the spring a (26) to compress or stretch, thereby driving the valve core (19) on the left side to move up and down, making the flow channel d (25) conductive, and the oil flows through the flow channel d (25), thereby generating a damping effect. The oil enters the flow channel c (24) and the flow channel b (22) only. Compare the pressure differences; the upper valve core (19) moves according to the movement of the lower pressure comparison piston, and when the displacement is large enough, the flow channel d (25) is opened; since the stiffness of the stiffness spring a (26) and the stiffness spring b (27) are similar, the starting pressure differences of the flow channel a (18) and the flow channel d (25) are different, so there will be three states: the flow channel d (25) and the flow channel a (18) are closed at the same time, the flow channel d (25) is closed, the flow channel a (18) is opened, and the flow channel d (25) and the flow channel a (18) are opened at the same time, that is, three different damping modes; The one-way energy feeding and energy recovery system (3) comprises an oil steering gear for controlling the flow direction of oil, the oil steering gear is connected to an energy feeding device (34) and a rodless chamber accumulator (31), and the energy feeding device (34) is connected to a battery pack (32) via a generator (33).

2. The pressure feedback damping self-adjusting energy-feeding oil-gas suspension according to claim 1 is characterized in that: The left side port of flow channel d (25), the port of flow channel c (24), and the left side port of flow channel a (18) are respectively connected to the left side oil inlet pipe of the throttle valve (28), and the right side port of flow channel d (25), the right side port of flow channel a (18), and the port of flow channel b (22) are respectively connected to the right side oil inlet pipe of the throttle valve (28).

3. The pressure feedback damping self-adjusting energy-feeding oil-gas suspension according to claim 1 is characterized in that: The oil outlet of the first-stage small-range damping multi-stage regulator (1) is arranged on the cylinder top (4) and connected to the rodless chamber a (12), and the oil inlet of the first-stage small-range damping multi-stage regulator (1) is arranged on the cylinder bottom (10) and connected to the rod chamber (14) and the rod chamber accumulator (15).

4. The pressure feedback damping self-adjusting energy-feeding oil-gas suspension according to claim 1 is characterized in that: The oil diverter of the one-way energy feeding and energy recovery system (3) is composed of four classic one-way valve groups, including one-way valve a (29), one-way valve b (30), one-way valve c (35), and one-way valve d (36); the four one-way valve groups control the flow direction of the oil so that the oil flows through the energy feeding device (34) in only one direction. The one-way rotation of the energy feeding device 34 drives the generator 33 to generate electricity, and the electricity is stored in the battery pack (32) for use in the on-board equipment to generate electricity.

5. The pressure feedback damping self-adjusting energy-feeding oil-gas suspension according to claim 1 is characterized in that: The energy feeding device (34) comprises a pancake-shaped shell (38), wherein the upper and lower tangents of the shell (38) are respectively provided with an oil inlet (37) and an oil outlet (42), a rotor (39) is provided at the center of the shell (38), a plurality of blades (41) arranged at equal intervals are provided on the rotor, and a counterweight (40) is provided between the blades (41) and the rotor (39); after the oil enters the shell (38) through the oil inlet (37), it acts on the blade surface of the blade (41), drives the rotor (39) to rotate, and then drives the generator (33) to generate electricity, and the hydraulic energy in the hydraulic system is converted into electrical energy.

6. The pressure feedback damping self-adjusting energy-feeding oil-gas suspension according to claim 5 is characterized in that: The blade (41) comprises two cranks (47) whose tails are connected to both sides of the central axis of the rotor (39) through springs (46); the ends of the cranks (47) are connected to telescopic blades with variable areas through connecting rods (48); the telescopic blades comprise fixed blades (45) and movable blades (43) that can slide and retract on the top of the fixed blades (45); the fixed blades (45) are connected to the movable blades (43) through guide grooves; wherein the fixed blades (45) are fixed in position, the ends of the cranks (47) are movably connected to the movable blades (43) through connecting rods (48); the movable blades (43) can slide and retract on the guide grooves by rotating the connecting rods (48) by the cranks (47); the contact area between the blades (41) and the incoming flow is changed by adjusting the extended length of the movable blades (43); the force of the oil on the blades is changed, and the rotation speed of the energy feeding device is changed; the rotation speed of the rotor (39) is ensured to be constant by dynamically adjusting the extended length of the movable blades (43); and the additional damping generated is constant; When the speed increases, the centrifugal force generated by the rotation of the energy feeding device (34) increases, and the centrifugal force causes the spring (46) to be stretched, thereby causing the crank (47) to move from an angle with the horizontal direction to a horizontal direction. The connecting rod (48) is pulled downward by the crank (47) and then moves downward along the guide groove, causing the movable blade (43) to contract inward, thereby reducing the effect of the oil on the blade (41), thereby reducing the speed of the rotor (39); the mass of the counterweight (40) is much greater than the mass of the movable blade (43), and the large mass is used to The counterweight (40) of a certain amount pulls the movable blade (43) during the rotation process, thereby changing the position of the movable blade (43); when the rotation speed is small, the expansion and contraction amount of the spring (46) decreases, and the movable blade (43) is pulled by the crank (47) and the connecting rod (48) to maintain the extended state, thereby increasing the area of ​​the oil acting on the blade (41), accelerating the rotation speed of the energy feeding device, and dynamically adjusting the oil action area of ​​the blade (41) to keep the rotation speed of the energy feeding device constant, thereby ensuring that the damping generated by the rotation of the energy feeding device is constant.

7. The pressure feedback damping self-adjusting energy-feeding oil-gas suspension according to claim 6 is characterized in that: The movable blade (43) is connected to a movable blade connecting piece (44), and moves linearly along the guide rail in the guide rail groove through the movable blade connecting piece (44), thereby realizing extension or retraction of the movable blade.

8. The pressure feedback damping self-adjusting energy-feeding oil-gas suspension according to claim 5 is characterized in that: The crank connecting rod structure diagram shows that a U-shaped groove is provided at the end of the crank (47) to ensure that the connecting rod (48) has sufficient movement space; the front end of the crank (47) is connected to the connecting rod (48) through a pin a (49), and a clearance is reserved to realize the sliding of the crank (47) on the end of the connecting rod (48).

9. The pressure feedback damping self-adjusting energy-feeding oil-gas suspension according to claim 8, characterized in that: A hole is machined on the side of the rotor (39), and the rear end of the connecting rod (48) passes through the through hole opened on the side through the pin shaft b (50) and cooperates with the hole on the side of the rotor (39), so that the connecting rod (48) is restricted to a fixed position, so that under the action of centrifugal force, it can only rotate at the position of the pin shaft b (50) and will not move.

10. A method for operating a pressure feedback damping self-adjusting energy-feeding oil-gas suspension as claimed in any one of claims 1 to 9, characterized in that: The first-stage small-range damping multi-stage regulator (1) is used as a vehicle shock absorbing spring or oil-gas suspension, the one-way energy feedback and energy recovery system (3) replaces the traditional suspension energy feedback device, and the second-stage large-range damping multi-stage regulator (2) is installed on the vehicle chassis; the first-stage small-range damping multi-stage regulator (1), the second-stage large-range damping multi-stage regulator (2) and the one-way energy feedback and energy recovery system (3) are connected by pipelines; Here are the steps: When a vehicle passes a raised obstacle during normal driving, the piston rod (9) in the first-stage small-range damping multi-stage regulator (1) is compressed, and the oil flows in the oil cylinder in the following direction: the oil inlet in the cylinder bottom (10) enters the rod chamber (14) through the pipeline in sequence, then enters the rodless chamber b (13) through the fixed damping hole (8) on the piston rod (9), then enters the rodless chamber a (12) through the series damping device (7), and finally flows out from the oil outlet of the cylinder top (4); after the oil flows out from the oil outlet of the cylinder top (4), it flows through the throttle valve (28) in the second-stage large-range damping multi-stage regulator (2), and then flows into the one-way energy feedback and energy recovery system (3); In the one-way energy feeding and energy recovery system (3), oil first flows into the one-way valve (30), flows into the generator (33) from the upper side of the energy feeding device (34), flows out from the lower side, and finally flows through the oil circuit on the lower side of the second-stage large-range damping multi-stage regulator (2) through the one-way valve (36), returns to the oil inlet of the cylinder bottom (10) of the first-stage small-range damping multi-stage regulator (1), and flows into the rod chamber (14); when the flow channel (18) and the flow channel (25) in the second-stage large-range damping multi-stage regulator (2) are opened, the oil flows through the flow channel a (18) and the flow channel b (25) at the same time, and forms three independent flow channels in parallel with the oil flowing through the throttle valve (28); When the vehicle passes through a concave road surface during normal driving, the piston (9) in the first-stage small-range damping multi-stage regulator (1) is stretched, and the flow direction of the oil is opposite to that when passing through a raised obstacle, thereby also achieving shock absorption. The shock absorption process of the first-stage small-range damping multi-stage regulator (1) and the second-stage large-range damping multi-stage regulator (2) is manifested by the damping effect generated when the oil passes through the series of damping devices (7), the damping holes (8), the flow channels (18), and the flow channels (25) in sequence. The one-way energy feedback and energy recovery system (3) utilizes the movement of oil to drive the blades (41) to rotate at a constant speed to drive the rotor (39) to generate electricity, convert hydraulic energy into mechanical energy, and then convert mechanical energy into electrical energy, thereby realizing the function of energy storage and energy feedback.

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