CN114483858A

CN114483858A - Shock attenuation system and vehicle

Info

Publication number: CN114483858A
Application number: CN202210276681.9A
Authority: CN
Inventors: 畅建坤
Original assignee: Individual
Current assignee: Individual
Priority date: 2022-03-21
Filing date: 2022-03-21
Publication date: 2022-05-13

Abstract

The present disclosure relates to the field of shock absorbers, and more particularly, to a shock absorbing system and a vehicle. The shock-absorbing system includes: the hydraulic control system comprises a shock absorber, an oil pressure switching mechanism and an energy recovery mechanism, wherein the shock absorber comprises a main cylinder body and a main piston mechanism, and the main cylinder body is provided with a main cylinder cavity; the main piston mechanism is arranged in the main cylinder cavity and divides the main cylinder cavity into a first main cavity and a second main cavity; the main piston mechanism comprises a main piston rod; the oil pressure switching mechanism comprises a high-pressure cylinder and a low-pressure cylinder, and the high-pressure cylinder is communicated with the low-pressure cylinder through a first pipeline; the first pipeline is communicated with the first rod cavity; the shock absorber is communicated with the oil pressure switching mechanism, and the oil pressure switching mechanism is communicated with the energy recovery mechanism; the inlet end of the energy recovery mechanism is communicated with the high-pressure cylinder, and the outlet end of the energy recovery mechanism is communicated with the low-pressure cylinder. The vehicle rollover reduction system can reduce the occurrence of the rollover condition of the vehicle and can also realize energy recovery.

Description

Shock attenuation system and vehicle

Technical Field

The present disclosure relates to the field of shock absorbers, and more particularly, to a shock absorbing system and a vehicle.

Background

The low energy consumption of the vehicle shock absorber is inseparable with the damping spring hardness, and energy loss mainly has three parts, and the first part is: the hard spring can cause the tire to generate great deformation to the ground and energy loss; the second part is: the hard spring cannot deform well between the tire and the vehicle body, so that the vehicle floats up and down along the road surface during running to increase the energy loss of the wind resistance of the vehicle; the third part is that: the stiff spring stores a large amount of road impact energy at high vehicle speeds, which is damped by the shock absorber piston to generate energy consumption.

Disclosure of Invention

The present disclosure provides a shock absorption system and a vehicle, which solves the technical problem that the vehicle is easy to turn over and the energy loss is contradictory and is considered to be contradictory.

The present disclosure provides a shock absorbing system, which includes:

a shock absorber comprising a main cylinder and a main piston mechanism, the main cylinder having a main cylinder chamber; the main piston mechanism is arranged in the main cylinder cavity, the main piston mechanism divides the main cylinder cavity into a first main cavity and a second main cavity, and the main piston mechanism is configured to move along the axial direction of the main cylinder cavity; the primary piston mechanism includes a primary piston rod having a first rod cavity; the main piston rod is provided with a first cavity hole, and the first cavity hole is communicated with the first main cavity;

the oil pressure switching mechanism comprises a high pressure cylinder and a low pressure cylinder, the high pressure cylinder is communicated with the low pressure cylinder through a first pipeline, the high pressure cylinder is provided with a third one-way valve which flows from the first pipeline to the high pressure cylinder, and the low pressure cylinder is provided with a fourth one-way valve which flows from the low pressure cylinder to the first pipeline; the first pipe is communicated with the first rod cavity; and

the shock absorber is communicated with the oil pressure switching mechanism, and the oil pressure switching mechanism is communicated with the energy recovery mechanism; the inlet end of the energy recovery mechanism is communicated with the high-pressure cylinder, and the outlet end of the energy recovery mechanism is communicated with the low-pressure cylinder.

Further, a pressurizing structure is formed between the main piston rod and the main cylinder chamber, and the pressurizing structure is configured to enable unidirectional fluid flow to the first rod chamber.

Further, the main piston mechanism further comprises a secondary piston rod mounted in the first rod cavity and configured to be movable relative to the main piston rod.

Furthermore, a second cavity hole is formed in the main piston rod, the first cavity hole is located above the second cavity hole, and the second cavity hole is communicated with the second main cavity; the bottom end of the secondary piston rod has a secondary bottom piston configured to be movable to the second chamber aperture to enable a disconnection between the second main chamber and the first rod chamber at the second chamber aperture.

Further, the pressurizing structure comprises a main bottom piston arranged at the bottom end of the main piston rod, a first one-way valve arranged on the main bottom piston, and a second one-way valve arranged at the bottom of the main cylinder body; when the main piston rod moves along the axial direction of the main cylinder cavity, the first one-way valve and the second one-way valve can be opened alternately.

Furthermore, the top of the auxiliary piston rod is provided with an auxiliary top piston which is limited on the main piston rod, so that the auxiliary top piston can move in a set range.

Furthermore, the energy recovery mechanism comprises an inlet pipe, a constant pressure valve structure, an energy recovery device and an outlet pipe; one end of the inlet pipe is communicated with the high-pressure cylinder, the other end of the inlet pipe is communicated with the constant-pressure valve structure, the constant-pressure valve structure is communicated with the energy returning device, the energy returning device is also communicated with one end of the outlet pipe, and the other end of the outlet pipe is communicated with the low-pressure cylinder.

Further, the constant pressure valve structure comprises a constant pressure valve body, a first guide rod, a first nut, a compression spring, a third spring seat and a movable piston; one end of the first guide rod is fixedly connected with the movable piston, the first nut is in threaded connection with the first guide rod, one end of the compression spring is abutted against the first nut, the other end of the compression spring is abutted against the third spring seat, and the third spring seat is detachably fixed in a valve cavity of the constant pressure valve body; the first nut is positioned on one side of the third spring seat, and the moving piston is positioned on the other side opposite to the third spring seat; the peripheral wall of the outlet of the valve cavity of the constant pressure valve body is provided with a high-pressure jet hole; a third flow hole is formed in the third spring seat; the movable piston can seal off the high-pressure jet hole.

Further, the third one-way valve comprises a first valve casing, a first valve rod, a first valve plate and a first valve spring; a first side valve hole is formed in the side wall of the first valve shell, one end of the first valve rod is fixedly connected with the first valve plate, the first valve rod is inserted into the first valve shell, and the first valve rod can move relative to the first valve shell; one end of the first valve spring is abutted with the first valve plate, and the other end of the first valve spring is abutted with the bottom of the first valve shell; the first valve shell is also provided with a first main valve hole; the first valve plate is used for plugging the first main valve hole; when the pressure in the first pipeline is higher than the pressure in the high-pressure cylinder, the first valve plate moves downwards, so that the first main valve hole is communicated with the first side valve hole;

the fourth one-way valve comprises a second valve shell, a second valve rod, a second valve plate and a second valve spring; one surface of the second valve shell is provided with a second top valve hole, and the other surface of the second valve shell opposite to the second top valve hole is provided with a second bottom valve hole; one end of the second valve rod is fixedly connected with the second valve plate, the second valve rod is inserted into the second valve casing, and the second valve rod can move relative to the second valve casing; one end of the second valve spring is abutted with the second valve sheet, and the other end of the second valve spring is abutted with the outer top surface of the second valve shell; the second valve plate is used for plugging the second top valve hole; when the pressure in the low pressure cylinder is greater than the pressure in the first pipe, the second valve plate moves downward to communicate the second top valve hole with the second bottom valve hole, so that the second top valve hole is communicated with the first pipe.

The present disclosure also provides a vehicle, comprising: the vehicle comprises a vehicle body, steerable wheels connected with the vehicle body and the damping system; the main piston rod is connected with the vehicle body, and the main cylinder body is connected with the wheels and used for enabling the main cylinder body to rotate relative to the main piston rod when the wheels turn.

The beneficial effect of this disclosure mainly lies in:

the shock absorption system comprises a shock absorber, an oil pressure switching mechanism and an energy recovery mechanism; the shock absorber comprises a main cylinder body and a main piston mechanism, wherein the main cylinder body is provided with a main cylinder cavity; the main piston mechanism is arranged in the main cylinder cavity, the main piston mechanism divides the main cylinder cavity into a first main cavity and a second main cavity, and the main piston mechanism is configured to move along the axial direction of the main cylinder cavity; the main piston mechanism comprises a main piston rod, and the main piston rod is provided with a first rod cavity; a first cavity hole is formed in the main piston rod and communicated with the first main cavity; the oil pressure switching mechanism comprises a high-pressure cylinder and a low-pressure cylinder, the high-pressure cylinder is communicated with the low-pressure cylinder through a first pipeline, the high-pressure cylinder is provided with a third one-way valve which flows to the high-pressure cylinder from the first pipeline, and the low-pressure cylinder is provided with a fourth one-way valve which flows to the first pipeline from the low-pressure cylinder; the first pipeline is communicated with the first rod cavity; the shock absorber is communicated with the oil pressure switching mechanism, and the oil pressure switching mechanism is communicated with the energy recovery mechanism; the damping system and the vehicle can reduce the rollover of the vehicle and can realize energy recovery.

It is to be understood that both the foregoing general description and the following detailed description are for purposes of illustration and description and are not necessarily restrictive of the disclosure. The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate the subject matter of the disclosure. Together, the description and drawings serve to explain the principles of the disclosure.

Drawings

In order to more clearly illustrate the embodiments of the present disclosure or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present disclosure, and other drawings can be obtained by those skilled in the art without creative efforts.

FIG. 1 is a schematic view of a shock absorber according to one or more embodiments of the present disclosure;

FIG. 2 is an enlarged view of a portion of FIG. 1 at B;

FIG. 3 is a schematic structural diagram of a piston valve plate according to one or more embodiments of the present disclosure;

FIG. 4 is a schematic illustration of a first piston according to one or more embodiments of the present disclosure;

FIG. 5 is a schematic diagram of a piston valve plate according to one or more embodiments of the present disclosure;

FIG. 6 is a schematic illustration of a fourth check valve in accordance with one or more embodiments of the present disclosure;

FIG. 7 is a schematic illustration of a third one-way valve according to one or more embodiments of the present disclosure;

FIG. 8 is a schematic illustration of a shock absorbing system according to one or more embodiments of the present disclosure;

FIG. 9 is an enlarged view of a portion of the structure of FIG. 8 at A;

FIG. 10 is a further structural schematic view of a shock absorption system in accordance with one or more embodiments of the present disclosure.

Icon:

101-a main cylinder; 102-a first main chamber; 103-a second main chamber; 104-a main piston rod; 105-a secondary piston rod; 106-a first rod cavity; 107-main bottom piston; 108-first flow orifice; 109-overflowing ball; 110-cylinder block; 111-a second flow orifice; 112-one-way valve plate; 113-a first bore; 114-a second bore; 115-sub-bottom piston; 120-secondary top piston; 121-top spring; 122-master piston cap; 123-side cap holes; 124-top cap holes; 125-a first spring seat; 126-secondary cylinder; 127-an auxiliary pressure chamber; 128-main bottom cavity; 129-pressure storage chamber port; 130-a discharge port; 135-high pressure cylinder; 136-low pressure cylinder; 137-a first conduit; 138-a first valve housing; 139-a first valve stem; 140-a first valve plate; 141-a first valve spring; 142-a first side valve opening; 143-a first main valve bore; 144-a second valve housing; 145-a second valve stem; 146-a second valve plate; 147-a second valve spring; 148-a second top valve aperture; 149-a second bottom valve aperture; 150-a first communication line; 151-second communication line; 152-an inlet tube; 153-constant pressure valve structure; 154-an outlet pipe; 157-constant pressure valve body; 158-a first conductor; 159-first nut; 160-hold down spring; 161-a third spring seat; 162-moving the piston; 163-high pressure jet hole; 164-third flow orifice; 165-a turbine; 166-a pulley; 167-a third communication line; 168-oil cup; 171-a first flow channel; 172-a first guide bar; 180-piston valve plate; 181-first piston; 182-piston valve plate; 183-valve plate oil penetration hole; 184-a first slide hole; 185-second slide hole; 186-piston oil through hole; 187-a slide bar; 188-a first nut; 189-valve spring; 190-wire pair joint; 191-a third bore; 192-a second rod cavity; 194-a fourth bore; 195-circlip.

Detailed Description

The technical solutions of the present disclosure will be described clearly and completely with reference to the accompanying drawings, and it is to be understood that the described embodiments are only some embodiments of the present disclosure, but not all embodiments.

All other embodiments, which can be derived by a person skilled in the art from the embodiments disclosed herein without making any creative effort, shall fall within the protection scope of the present disclosure.

In the description of the present disclosure, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of describing and simplifying the present disclosure, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present disclosure. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present disclosure, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present disclosure can be understood in specific instances by those of ordinary skill in the art.

Referring to fig. 1-5, in one or more embodiments, the present disclosure provides a shock absorber that includes a main cylinder 101 and a main piston mechanism, the main cylinder 101 having a main cylinder chamber; a main piston mechanism is arranged in the main cylinder cavity, the main piston mechanism divides the main cylinder cavity into a first main cavity 102 and a second main cavity 103, and the main piston mechanism is configured to be capable of moving along the axial direction of the main cylinder cavity; wherein the main piston mechanism comprises a main piston rod 104 and a secondary piston rod 105, the main piston rod 104 having a first rod cavity 106, the secondary piston rod 105 being mounted in the first rod cavity 106, and the secondary piston rod 105 being configured to be movable relative to the main piston rod 104; a pressurizing structure is formed between the master piston rod 104 and the master cylinder chamber, and is configured to enable unidirectional fluid flow to the first rod chamber 106. The pressurization structure can adjust the pressure of the shock absorber and the shock absorption system.

In some embodiments, movement of the master piston mechanism in the master cylinder chamber can change the volume size of the first and

second master chambers

102, 103. The main piston mechanism is capable of moving in the axial direction of the main cylinder chamber, and is also capable of relative rotation about the axis of the main cylinder 101. The first rod chamber 106 extends in the axial direction of the main piston rod 104; the pressurized structure enables one-way fluid flow to the first rod chamber 106 as the main piston rod 104 moves axially of the main cylinder chamber. The first main chamber 102 is located above the second main chamber 103.

In at least one embodiment, the shock absorber is provided to reduce vehicle rollover by moving the primary piston mechanism axially within the primary piston rod 104 along the primary cylinder chamber and by flowing pressurized structural fluid to the first rod chamber 106 to help dampen the primary piston rod 104 of the shock absorber on the outboard side of the vehicle during cornering.

In some embodiments, the pressurizing structure includes a main bottom piston 107 disposed at the bottom end of the main piston rod 104, a first check valve disposed on the main bottom piston 107, and a second check valve disposed at the bottom of the main cylinder 101; the first check valve and the second check valve can be alternately opened when the main piston rod 104 moves in the axial direction of the main cylinder chamber.

In one embodiment, a first flow hole 108 is formed in the bottom surface of the main bottom piston 107, the first flow hole 108 is communicated with the first rod cavity 106, the main bottom piston 107 and the main piston rod 104 are detachably and fixedly connected, a flow passing ball 109 is arranged above the first flow hole 108, the diameter of the flow passing ball 109 is larger than that of the first flow hole 108, and thus the flow passing ball 109 and the first flow hole 108 cooperate to form a first one-way valve, so that fluid can enter the first rod cavity 106 through the first flow hole 108 in a one-way manner. The bottom of the main cylinder body 101 is fixed with a cylinder body seat 110, and the cylinder body seat 110 is detachably and fixedly connected with the main cylinder body 101. The cylinder body seat 110 is provided with a second flow hole 111, a one-way valve plate 112 is arranged above the second flow hole 111, and the diameter of the one-way valve plate 112 is larger than that of the second flow hole 111, so that the second flow hole 111 and the one-way valve plate 112 are matched to form a second one-way valve, and fluid can enter the main cylinder body 101 through the second flow hole 111 in a one-way mode. The first check valve may be in a closed state when the second check valve is open; while the first one-way valve is open, the second one-way valve may be in a closed state. It should be noted that other check valves may be used for the first check valve and the second check valve.

In some embodiments, the main piston rod 104 defines a first bore 113, a second bore 114 and a third bore 191, the first bore 113 is located above the second bore 114, and the second bore is located above the third bore; the first cavity 113 is communicated with the first main cavity 102, and the second cavity 114 and the third cavity are respectively communicated with the second main cavity 103. The secondary piston rod 105 has a second rod chamber 192, the bottom of which communicates with the first rod chamber 106; the bottom end of the secondary piston rod 105 has a secondary bottom piston 115, the secondary bottom piston 115 being configured to be movable to the second chamber bore 114 to enable a disconnection between the second main chamber 103 and the first rod chamber 106 at the second chamber bore 114. The secondary bottom piston 115 is also configured to be movable to the third chamber orifice 191 to enable a disconnection between the second main chamber 103 and the first rod chamber 106 at the third chamber orifice 191. The sub-bottom piston 115 is provided with a first flow passage 171, the sub-bottom piston 115 divides the first rod chamber 106 into an upper sub-chamber and a lower sub-chamber, and the first flow passage communicates the upper sub-chamber and the lower sub-chamber.

In some embodiments, the primary piston rod 104 is fitted with a first piston 181, the first piston 181 is fitted with the primary cylinder chamber, the first piston 181 is capable of axial movement relative to the primary cylinder chamber, and the first piston is capable of rotation about the axis of the primary cylinder chamber. The main piston rod 104 comprises a first part and a second part, and the first part and the second part are fixedly connected through a wire fitting 190; the first piston 181 is fixedly connected with the wire aligning joint; the outer rod diameter of the secondary piston rod 105 is smaller than the diameter of the axial bore in the wire pair joint 190. The auxiliary piston rod is sleeved on the wire aligning joint in an empty mode; the sub-bottom piston 115 is located below the wire alignment joint. When the upper end surface of the sub-base piston 115 contacts the lower bottom surface of the screw fitting, the lower bottom surface of the screw fitting can close the upper end port of the first flow passage 171; in one embodiment, the upper end surface of the sub-base piston 115 or the lower bottom surface of the opposite wire fitting is provided with a sealing ring, so that the upper port of the first flow passage 171 can be better closed. The first bore 113 is located above the first piston and the second bore 114 is located below the first piston. The first piston is provided with a piston oil penetration hole 186 and a second slide hole 185 which penetrate through the upper surface and the lower surface of the first piston; the number of piston oil through holes is a plurality of, and a plurality of piston oil through holes divide into a plurality of first hole row, and every first hole row includes a plurality of piston oil through holes, and a plurality of piston oil through holes in every first hole row are along the radial interval distribution of first piston. The central angle between each first hole row may be 90 degrees. The number of the second sliding holes is two, and the two second sliding holes are arranged in central symmetry; the length extending direction of the second sliding hole is arc-shaped. A piston valve plate 182 is arranged below the first piston and is sleeved on the main piston rod in a hollow manner; the piston valve plate is further provided with a plurality of valve plate oil penetrating holes 183, the valve plate oil penetrating holes are divided into a plurality of second hole rows, each second hole row comprises a plurality of valve plate oil penetrating holes, and the valve plate oil penetrating holes in each second hole row are distributed at intervals along the radial direction of the first piston. The central angle between each second hole row may be 90 degrees. The piston valve plate is also provided with a first slide hole 184. The upper surface of the first piston is also provided with a piston valve plate 180, and the piston valve plate is also provided with a first sliding hole 184. Two sliding rods 187 are fixed in the main cylinder chamber, and the two sliding rods 187 are symmetrically arranged with the axis of the main cylinder chamber as a symmetry axis. The slide bar passes through first slide hole 184 of piston vane, second slide hole 185 of first piston 181, and first slide hole 184 of piston valve plate 182. The first piston 181 is movable in the axial direction of the slide bar. The main piston rod 104 is further fixed with a first nut 188, a valve plate spring 189 is arranged between the first nut and the piston valve plate 180, two ends of the valve plate spring are respectively abutted to the first nut and the piston valve plate, the piston valve plate is sleeved on the screw joint in an empty mode, and the piston valve plate can seal the piston oil penetrating hole. The piston valve plate is limited on the wire aligning joint through the second part, and the piston valve plate can move within a set range in the axial direction of the wire aligning joint. When first piston moves down, when the oil pressure in the second main cavity can overcome the elasticity of valve plate spring, fluid can see through valve plate oil through hole and piston oil through hole to push away the piston valve plate in order to get into first main cavity. When the main piston rod rotates around the axis of the main piston rod, the first piston can also rotate, the sliding rod can move along the length direction of the second sliding hole relative to the first piston, and therefore the valve plate oil penetrating hole and the piston oil penetrating hole are staggered, and the first main cavity and the second main cavity can be disconnected.

In some embodiments, the secondary piston rod 105 has a secondary piston 120 on top of the primary piston rod 104, and the secondary piston 120 is constrained to the primary piston rod 104 such that the secondary piston 120 moves within a set range. The movement of the secondary piston rod 105 in the primary piston rod 104 is facilitated by the secondary top piston 120.

In one embodiment, the secondary top piston 120 at the top of the secondary piston rod 105 is located above the secondary bottom piston 115, the top of the primary piston rod 104 is detachably fixed with a primary piston cap 122, the side cap hole 123 is formed on the side surface of the primary piston cap 122, the top cap hole 124 is formed on the top surface of the primary piston cap 122, the top end of the secondary top piston rod 105 is in sliding fit with the top cap hole 124, and the second rod cavity 192 is communicated with the top cap hole 124; the main piston cap 122 has a hollow structure, a first spring seat 125 is arranged above the side cap hole 123, and the hollow structure of the main piston cap 122 is partitioned by the upper side of the first spring seat 125, so that a cap cavity is formed above the first spring seat, and the auxiliary top piston moves within a set range; a top spring 121 is arranged above the auxiliary top piston 120, one end of the top spring 121 is abutted against the main piston cap 122, the other end, opposite to the top spring 121, of the top spring is abutted against the auxiliary top piston 120, and the auxiliary top piston 120 is in sliding fit with a cap cavity of the main piston cap 122. A fourth cavity hole 194 is further formed in the auxiliary piston rod 105, the fourth cavity hole 194 is located below the auxiliary top piston 120, a clamp spring 195 is further arranged on the auxiliary piston rod and located below the fourth cavity hole 194, the clamp spring is located in a cap cavity of the main piston cap between the auxiliary top piston and the first spring seat 125, and the clamp spring can be abutted and limited against the upper end face of the first spring seat 125, so that the fourth cavity hole 194 can be located in the cap cavity of the main piston cap between the auxiliary top piston and the first spring seat. When the fluid pressure in the cap cavity of the main piston cap 122 below the secondary top piston 120 is greater than the pressure of the top spring 121, the secondary top piston 120 is moved upward, thereby moving the secondary piston rod 105 upward, so that the secondary bottom piston 115 is moved relative to the main piston rod 104, thereby making it possible to achieve the blocking of the second chamber hole 114 by the secondary bottom piston 115 and the closing of the upper port of the first flow passage 171. The side cap aperture 123 communicates with the first stem cavity 106. It should be noted that the vertical position of the circlip on the auxiliary piston rod can be adjusted as required to satisfy the vertical movement of the auxiliary bottom piston 115.

In some embodiments, the shock absorber further comprises an auxiliary pressure cylinder 126, the auxiliary pressure cylinder 126 is disposed at the bottom of the main cylinder body 101, an auxiliary pressure cavity 127 is formed between the outer wall of the auxiliary pressure cylinder 126 and the inner wall of the main cylinder body 101, and the auxiliary pressure cavity 127 is communicated with the second main cavity 103; the master bottom piston 107 is configured to be inserted into a cylinder chamber of the sub-pressure cylinder 126 and to move along the cylinder chamber of the sub-pressure cylinder 126. The expansion of the second main cavity 103 is facilitated by arranging the auxiliary pressure cylinder 126, and the buffering is realized.

In one embodiment, the secondary cylinder 126 is removably secured within the primary chamber and the primary base piston 107 is mated with the chamber of the secondary cylinder 126. The space between main bottom piston 107 and block base 110 forms main bottom chamber 128. The auxiliary pressure cylinder 126 is of an annular structure, an upper annular surface of the auxiliary pressure cylinder 126 is provided with a pressure storage cavity opening 129, a lower annular surface of the auxiliary pressure cylinder 126 is provided with a discharge opening 130, the discharge opening 130 is communicated with the main bottom cavity 128, and the pressure storage cavity opening 129 is communicated with the second main cavity 103. The pressure storage chamber port 129 has a diameter larger than that of the discharge port 130.

It should be noted that the secondary pressure cylinder 126 can also be detachably connected to the bottom end of the main cylinder body 101, that is, the secondary pressure cylinder 126 is located outside the main cylinder body 101.

It should be noted that, in some other embodiments, the relative rotation angle between the main piston rod 104 and the main cylinder 101 is constant, and a limit structure is disposed between the main piston rod 104 and the main cylinder 101 to limit the rotation angle between the main piston rod 104 and the main cylinder 101.

In some embodiments, the shock absorber further comprises a shock absorbing spring (not shown) which is sleeved outside the main cylinder 101. The shock absorption of the vehicle body (or the vehicle frame) is realized through the shock absorption spring. In addition, a second spring seat may be fixed to the main cylinder 101, so that the lower end of the damping spring abuts against the second spring seat; the upper end of the damping spring abuts against a fourth spring seat fixed to the top of the main piston rod 104.

Referring to fig. 6 to 10, in one or more embodiments, the present disclosure further provides a shock absorbing system including a shock absorber, an oil pressure switching mechanism and an energy recovery mechanism provided in at least one embodiment, wherein the shock absorber is communicated with the oil pressure switching mechanism, and the oil pressure switching mechanism is communicated with the energy recovery mechanism. The pressure of the damping system is adjusted through the oil pressure switching mechanism, and energy can be recovered through the energy recovery mechanism.

In some embodiments, the oil pressure switching mechanism includes a high pressure cylinder 135 and a low pressure cylinder 136, the high pressure cylinder 135 and the low pressure cylinder 136 are communicated with each other through a first pipe 137, the high pressure cylinder 135 is provided with a third check valve which flows from the first pipe 137 to the high pressure cylinder 135, and the low pressure cylinder 136 is provided with a fourth check valve which flows from the low pressure cylinder 136 to the first pipe 137; the first conduit 137 communicates with the first rod chamber 106. The pressure switching between the shock absorber and the energy recovery mechanism is performed by the high pressure cylinder 135 and the low pressure cylinder 136.

In one embodiment, the third check valve includes a first valve housing 138, a first valve stem 139, a first valve plate 140, and a first valve spring 141; a first side valve hole 142 is formed in the side wall of the first valve casing 138, one end of a first valve rod 139 is fixedly connected with the first valve plate 140, the first valve rod 139 is inserted into the first valve casing 138, and the first valve rod 139 can move relative to the first valve casing 138; one end of the first valve spring 141 abuts against the first valve plate 140, and the other end of the first valve spring 141 abuts against the bottom of the first valve housing 138. The first valve housing 138 is further provided with a first main valve hole 143; the first valve plate 140 is used for plugging the first main valve hole 143; when the pressure in the first pipe 137 is greater than the combined force of the pressure in the high pressure cylinder and the elastic force of the first valve spring 141, the first valve plate 140 moves downward such that the first main valve hole 143 and the first side valve hole 142 communicate with each other, and thus the fluid in the first pipe 137 flows toward the high pressure cylinder 135. The fourth check valve includes a second valve housing 144, a second valve stem 145, a second valve plate 146, and a second valve spring 147; one surface of the second valve casing is provided with a second top valve hole 148, and the other opposite surface of the second valve casing is provided with a second bottom valve hole 149; one end of the second valve stem 145 is fixedly connected to the second valve plate 146, the second valve stem 145 is inserted into the second valve housing 144, and the second valve stem 145 is movable with respect to the second valve housing 144; one end of the second valve spring 147 abuts against the second valve plate 146, and the other end of the second valve spring 147 abuts against the outer top surface of the second valve housing 144. The second valve plate 146 is used for plugging the second top valve hole 148; when the pressure in the low pressure cylinder 136 is greater than the combined force of the pressure in the first pipe and the elastic force of the second valve spring 147, the second valve plate 146 moves downward to communicate the second top valve hole 148 with the second bottom valve hole 149, so that the fluid in the low pressure cylinder 136 flows toward the first pipe 137.

In some embodiments, the first conduit 137 communicates with the first rod chamber 106 of the shock absorber through a first communication conduit 150, and in particular, the first conduit 137 communicates with the side cap hole 123 through the first communication conduit 150, and the side cap hole 123 communicates with the first rod chamber 106. Low pressure cylinder 136 is in communication with top cap aperture 124 through a second communication conduit 151.

In some embodiments, the inlet end of the energy recovery mechanism is in communication with the high pressure cylinder 135 and the outlet end of the energy recovery mechanism is in communication with the low pressure cylinder 136. The energy recovery is realized through an energy recovery mechanism.

In some embodiments, the energy recovery mechanism comprises an inlet pipe 152, a constant pressure valve structure 153, an energy recovery device, and an outlet pipe 154; one end of the inlet pipe 152 (i.e., the inlet end of the energy recovery mechanism) communicates with the high pressure cylinder 135, the other end of the inlet pipe 152 communicates with the constant pressure valve structure 153, the constant pressure valve structure 153 communicates with the energy recovery device, the energy recovery device also communicates with one end of the outlet pipe 154, and the other end of the outlet pipe 154 (i.e., the outlet end of the energy recovery mechanism) communicates with the low pressure cylinder 136.

In some embodiments, the constant pressure valve structure 153 includes a constant pressure valve body 157, a first guide rod 172, a first nut 159, a hold-down spring 160, a third spring seat 161, and a moving piston 162; one end of the first guide rod is fixedly connected with the movable piston 162, the first nut 159 is in threaded connection with the first guide rod, one end of the compression spring 160 is abutted against the first nut 159, the other end of the compression spring 160 is abutted against the third spring seat 161, and the third spring seat 161 is detachably fixed in the valve cavity of the constant pressure valve body 157. The first nut 159 is located on one side of the third spring seat 161, and the moving piston 162 is located on the opposite side of the third spring seat 161; a high-pressure jet hole 163 is formed in the peripheral wall of the outlet of the valve cavity of the constant-pressure valve body 157; a third flow hole 164 is formed in the third spring seat 161; moving the piston 162 seals off the high-pressure jet hole 163. When the pressure of the fluid in the inlet pipe 152 is greater than the elastic force of the third spring, the fluid pushes the movable piston 162 away through the third orifice 164 to open the high-pressure jet hole 163, so that the fluid is ejected from the high-pressure jet hole 163 and flows into the energy recovery device to operate the energy recovery device, thereby realizing energy conversion and recovery, and then the fluid flows back into the low-pressure cylinder 136 through the outlet pipe 154.

In one embodiment, referring to fig. 8, the energy recovery device comprises a turbine 165, the turbine 165 being coupled to a pulley 166, the pulley 166 being coupled to a generator for converting energy into electrical energy. It should be noted that the energy recovery device can also adopt an energy recovery device with a piston (see fig. 10), and can also adopt other types of energy recovery devices in the prior art to realize energy recovery.

In some embodiments, the second fluid bore 111 of the shock absorber cylinder block 110 communicates with an oil cup 168 through a third communication line 167. The upper portion of the oil cup 168 is open and open to the atmosphere.

In some embodiments, the number of the shock absorbers of the shock absorption system is 1-4, the number of the oil pressure switching mechanisms is 1 or 2, and the number of the energy recovery mechanisms is one. It should be noted that the number of the oil pressure switching mechanisms and the number of the energy recovery mechanisms in the shock absorbing system are not limited to 1 or 2, but may be a plurality of mechanisms, such as 2, 3, or 4, to be determined according to the implementation.

Because the vehicle is in the in-process of traveling, probably meet different road conditions, after shock mitigation system installed on the vehicle, its behavior is comparatively complicated, consequently, this disclosure only describes to several operating modes, does not specifically explain to other complicated operating modes again. The main piston rod 104 of the shock absorber of the shock absorbing system of the present disclosure is connected to the vehicle body, and the engaging lug provided on the main cylinder 101 of the shock absorber is connected to the wheel. Each wheel is provided with a shock absorber.

Referring to fig. 6 to 10, the damping system provided by at least one embodiment of the present disclosure can recover energy and reduce damping energy consumption of a vehicle, and can also solve a problem that a vehicle is prone to rollover when a soft spring is adopted. The shock absorber of the present disclosure is equivalent to a self-pressurizing shock absorber because the shock absorber is provided with the pressurizing structure; at the beginning, the hydraulic cylinder needs to be slowly and straightly punched, when the main piston rod 104 of the shock absorber moves up and down, the volume of the main bottom cavity 128 is increased or reduced, when the volume of the main bottom cavity 128 is reduced, extrusion oil pushes the oil of the flow passing ball 109 to enter the first rod cavity 106 through the first flow hole 108; when the main bottom piston 107 moves upwards, the volume of the main bottom chamber 128 increases, and at the same time, the overflowing ball falls, the main bottom chamber 128 generates vacuum negative pressure, the one-way valve plate 112 moves upwards to open the second flow hole 111, the medium (which can be air or oil, and the upper opening of the oil cup 168 is communicated with the outside atmosphere) in the oil cup 168 is sucked, when the main bottom piston 107 moves upwards and downwards repeatedly, the compressed medium moves upwards along the first rod chamber 106, a part of the compressed medium moves to the position of the auxiliary bottom piston 115 and flows out of the third chamber 191, returns to the main bottom chamber 128 to be supplemented with the compressed medium, and moves upwards and downwards continuously in the auxiliary pressure chamber 127, the other part of the compressed medium is continuously transmitted upwards to the first main chamber 102 upwards through the first flow passage 171 to be charged with pressure, then sequentially passes through the side cap hole 123 and the first communication pipeline 150 to push the first valve plate 140 to enter the high-pressure cylinder 135, and the pressure of the high-pressure cylinder 135 continuously rises during the movement of the shock absorber for a certain time, and the pressure of the high-pressure cylinder 135 continuously rises, and overcomes the pressure of the compressing spring 160 to push the moving piston 162 to flow out the high-speed to flow out the high-pressure jet hole 163 through the outlet pipe 154 The cylinder 136, at which time pressure enters the cap hole 124 through the second communication line 151, flows out of the fourth bore 194, and acts on the sub-top piston 120; the auxiliary piston rod 105 can feed back pressure, when the pressure reaches a set value, the auxiliary top piston 120 is pushed upwards by overcoming the top spring 121 to drive the auxiliary piston rod 105 and the auxiliary bottom piston 115 to move upwards together, the auxiliary bottom piston 115 blocks the second cavity hole 114 and the upper end opening of the first flow channel 171 to block punching oil media from entering the main bottom cavity 128, so that the up-and-down movement of the main bottom piston 107 cannot form vacuum negative pressure, the one-way valve plate 112 is not easy to open, and the punching of the shock absorber is finished at the moment. The low pressure cylinder 136 supplements the pressure of the second main chamber 103 chamber lost by the up and down movement of the first piston 181 through the second rod chamber 192 and the third chamber hole 191.

When a straight-going vehicle encounters a convex road surface, when the pressurizing pressure of the shock absorber reaches a set value, the vehicle can move at a high speed; when the road surface is raised, the first piston 181 moves downward relative to the main cylinder 101, that is, the distance between the tire and the vehicle body is reduced, the volume of the second main chamber 103 is reduced, and the pressure is increased, at this time, the flow area of the through hole formed by the first piston 181 and the piston valve plate 182 is maximum, the pressure overcomes the spring force valve plate spring 189 to push the piston valve plate 180 to move upward, a certain amount of air or oil enters the first main chamber 102 through the periphery of the piston valve plate 180, the volume of the first main chamber 102 is increased, the medium flowing into the second main chamber 103 is not enough to fill the volume cavity of the first main chamber 102, the pressure is reduced, at this time, the pressure of the low-pressure cylinder is higher than the pressure of the first main chamber 102, the oil medium overcomes the spring force of the second valve spring 147, pushes the second valve plate 146 to enter the first main chamber 102 through the first pipe 137, the main piston cap 122 and the first rod chamber 106 to fill the increased volume space, and the first piston 181 finishes the downward movement (here, the shock absorber moves, in order to reduce the resistance of the first piston 181 to downward movement and reduce the impact on the ground finally applied to the tire, the first piston 181 is provided with a valve plate oil penetration hole 183 to discharge the pressure to the first main chamber 102 against the first piston 181 and the piston valve plate 180 when the pressure in the second main chamber 103 is too high.

When the vehicle enters a downhill section after going uphill to a convex road surface, the tire of the vehicle and the vehicle body move relatively far away, the first piston 181 moves upward relative to the main cylinder body 101, the elastic potential energy of the shock absorption spring compressed outside the shock absorber is released, and the translation speed of the vehicle is far greater than the movement speed of the main piston rod 104 under most conditions, so the tire of the vehicle basically does not move downward along the curve track of the convex road surface of the downhill, but the tire moves away from the downhill road surface and is suspended, at this time, the elastic potential energy stored in the shock absorption spring is released between the vehicle body and the tire, and the tire is prompted to collide with the ground at a high speed in a predictable manner (the piston of the shock absorber in the prior art has an orifice which can control the piston to move at a certain speed to consume the energy, and the shock absorption system disclosed herein recovers the energy), the oil in the first main cavity 102 pulls the first piston 181 through the main piston rod 104 under the elastic force of the shock absorption spring Relative to the main cylinder 101, the oil is pressed into the first rod chamber 106 through the first chamber hole 113 and moves upward, flows into the first communication pipe 150 through the side cap hole 123 to push open the third check valve and enter the high pressure cylinder 135, at this time, the elastic potential energy of the damping spring is converted into static pressure energy and stored in the high pressure cylinder 135, the oil in the high pressure cylinder 135 enters the barostat valve structure through one end of the inlet pipe 152, the compression degree of the compression spring 160 can be adjusted by adjusting the first nut 159, the compression degree of the compression spring 160 determines the pressure in the high pressure cylinder 135, the medium pressure of the high pressure cylinder 135 can control the speed of the oil in the first main chamber 102 entering the high pressure cylinder 135, and therefore, the pressure adjustment in the high pressure cylinder 135 can indirectly adjust the opening pressure of the third check valve, the first communication pipe 150, the side cap hole 123, the first rod chamber 106, the first chamber hole 113 to the outflow speed of the oil from the first main chamber 102, in this way, the movement speed of the first piston 181 and the main piston rod 104 is controlled, and the purpose of controlling and adjusting the movement speed of the relative distance between the vehicle body and the tire is achieved.

The anti-rollover principle and the energy recovery principle of the damping system in the disclosure are respectively as follows:

1. the principle of preventing side turning:

the damping system can increase the rollover prevention capability of the vehicle at the curve and the stability of the vehicle during turning, when the vehicle enters the curve, under the action of centrifugal force and a damping spring, the movement trend of relative distance can be generated between the wheels on the inner side of the vehicle and the vehicle body of the vehicle, and the movement trend of relative approach can be generated between the wheels on the outer side and the vehicle body.

The shock absorber is arranged between the vehicle wheel and the vehicle body, the piston rod of the shock absorber is fixed on the vehicle body, the main cylinder body 101 is fixed on the steering wheel, when the vehicle turns to enter a curve, the wheel drives the main cylinder body 101 to rotate synchronously, the main cylinder body 101 can move axially relative to the main piston rod 104, as the main cylinder body 101 and the main piston rod 104 rotate relatively, the position between the piston oil through hole 186 on the first piston 181 and the valve plate oil through hole 183 on the piston valve plate 182 is promoted to be displaced gradually so as to reduce the pressure area of the pressure in the second main chamber 103 acting on the piston valve plate 180, so as to realize the pressure maintaining of the second main chamber 103, the first piston 181 is difficult to descend, the obtained force is changed into supporting force to be transmitted to the vehicle body through the main piston rod 104, thereby inhibiting the vehicle outside from rolling over, when the turning degree is increased, the ability of inhibiting the vehicle outside from rolling over is also increased, the piston oil through hole 186 on the first piston 181 and the valve plate oil through hole 183 on the piston valve plate 182 are completely displaced and not communicated, the second main cavity 103 is a closed space, the first piston 181 can obtain a larger supporting force of compressed air to inhibit the first piston from moving downwards continuously, and the main piston rod 104 provides a larger supporting force for the vehicle body to realize the stable vehicle bending; meanwhile, the gravity center of the vehicle deviates outwards due to centrifugal force, a movement trend of relative distance between the inner side wheel and the vehicle body is generated under the action of the damping spring, the first main cavity 102 is filled with oil, so that the movement trend is inhibited, the first piston 181 acts on the oil in the first main cavity 102, the oil in the first main cavity 102 enters the first rod cavity 106 through the first cavity hole 113 and is transmitted to the third one-way valve and the fourth one-way valve from the side cap hole 123 and the first communication pipeline 150, the fourth one-way valve only can discharge oil and can not feed oil, in addition, the pressure of the oil can not overcome the pressure in the high-pressure cylinder 135 to push the third one-way valve, so that the first main cavity 102 forms a closed space, the oil in the first main cavity 102 can not prevent the first piston 181 from moving upwards relative to the main cylinder body 101, and the elastic force of the damping spring acting between the vehicle body and the wheel is also inhibited, the shock absorption spring cannot rebound, so that the movement trend of relative distance between the wheel on the inner side of the vehicle and the vehicle body is restrained, and the vehicle is prevented from rolling over.

2. Energy recovery:

when the vehicle moves at a high speed, the main piston rod 104 and the first piston 181 of the shock absorber reciprocate up and down in the main cylinder 101; the oil in the prior art shock absorber consumes the elastic potential energy from the damping spring to control the movement speed of the first piston 181 of the shock absorber, but the shock absorber and the damping system of the present disclosure can not only store and reuse the impact energy, but also more precisely control the movement speed of the main piston rod 104 and the first piston 181.

When the vehicle moves at a high speed, the vehicle vibration is transmitted to the damping spring, the elastic potential energy of the damping spring is transmitted to the main piston rod 104 and the first piston 181, the mechanical motion of the first piston 181 can extrude the oil liquid in the first main cavity 102 to be converted into fluid dynamic pressure, the fluid dynamic pressure enters the first rod cavity 106 through the first cavity hole 113 to flow upwards, flows out through the side cap hole 123, enters the first pipeline 137 through the first communication pipeline 150, pushes away the third one-way valve to enter the high-pressure cylinder 135, then flows out through the inlet pipe 152 arranged at the bottom of the high-pressure cylinder 135 to enter the constant pressure valve structure 153, when the oil pressure overcomes the elastic force of the pressing spring 160, pushes away the movable piston 162 to jet out the oil liquid from the high-pressure jet hole 163, the flowing-out oil is jetted to rotate the turbine 165, the turbine 165 drives the belt pulley 166 to rotate, generates electricity through the generator, and stores the electricity in the battery, or is applied to other equipment; the oil liquid doing work on the turbine 165 enters the low pressure cylinder 136 through the outlet pipe 154, when the first piston 181 moves downwards, the pressure in the first main chamber 102 is reduced, a pressure difference is generated between the low pressure cylinder 136 and the first main chamber 102 of the first piston 181, the oil liquid of the low pressure cylinder 136 pushes the fourth check valve open, oil is supplied to the first main chamber 102 of the first piston 181 through the side cap hole 123, and a complete oil circuit cycle of the vibration energy of the shock absorber recovered through an oil medium is completed.

In one or more embodiments, the present disclosure also provides a vehicle comprising: a body, steerable wheels coupled to the body, and a shock absorbing system in at least one embodiment; the main piston rod 104 is connected to the vehicle body, and the main cylinder 101 is connected to the wheel for enabling the main cylinder 101 to rotate relative to the main piston rod 104 when the wheel is steered. The wheels are connected with the vehicle body, and the vehicle can be a two-wheel vehicle, a three-wheel vehicle, a four-wheel vehicle or other multi-wheel vehicles.

Finally, it should be noted that: the above embodiments are only used for illustrating the technical solutions of the present disclosure, and not for limiting the same; while the present disclosure has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art will understand that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present disclosure.

Claims

1. A shock absorbing system, comprising:

a shock absorber comprising a main cylinder and a main piston mechanism, the main cylinder having a main cylinder chamber; the main piston mechanism is arranged in the main cylinder cavity, the main piston mechanism divides the main cylinder cavity into a first main cavity and a second main cavity, and the main piston mechanism is configured to move along the axial direction of the main cylinder cavity; the primary piston mechanism includes a primary piston rod having a first rod cavity; a first cavity hole is formed in the main piston rod and communicated with the first main cavity;

the hydraulic switching mechanism comprises a high-pressure cylinder and a low-pressure cylinder, the high-pressure cylinder is communicated with the low-pressure cylinder through a first pipeline, the high-pressure cylinder is provided with a third one-way valve which flows from the first pipeline to the high-pressure cylinder, and the low-pressure cylinder is provided with a fourth one-way valve which flows from the low-pressure cylinder to the first pipeline; the first pipe is communicated with the first rod cavity; and

2. The shock absorbing system according to claim 1, wherein a pressurizing structure is formed between said main piston rod and said main cylinder chamber, said pressurizing structure being configured to enable unidirectional fluid flow to said first rod chamber.

3. The shock absorbing system of claim 1 wherein said primary piston mechanism further includes a secondary piston rod mounted in said first rod chamber and configured to move relative to said primary piston rod.

4. The shock absorbing system according to claim 3, wherein the main piston rod further defines a second bore, the first bore is located above the second bore, and the second bore is in communication with the second main chamber; the bottom end of the secondary piston rod has a secondary bottom piston configured to be movable to the second chamber aperture to enable a disconnection between the second main chamber and the first rod chamber at the second chamber aperture.

5. The shock absorbing system according to claim 2, wherein the pressurizing structure includes a main bottom piston provided at a bottom end of the main piston rod, a first check valve provided on the main bottom piston, and a second check valve provided at a bottom of the main cylinder; when the main piston rod moves along the axial direction of the main cylinder cavity, the first one-way valve and the second one-way valve can be opened alternately.

6. The shock absorbing system according to claim 3, wherein the secondary piston rod has a secondary overhead piston at the top thereof, the secondary overhead piston being constrained to the primary piston rod to allow the secondary overhead piston to move within a set range.

7. The shock absorbing system according to any one of claims 1 to 3, wherein the energy recovery mechanism comprises an inlet pipe, a constant pressure valve structure, an energy recovery device and an outlet pipe; one end of the inlet pipe is communicated with the high-pressure cylinder, the other end of the inlet pipe is communicated with the constant-pressure valve structure, the constant-pressure valve structure is communicated with the energy returning device, the energy returning device is also communicated with one end of the outlet pipe, and the other end of the outlet pipe is communicated with the low-pressure cylinder.

8. The shock absorbing system according to claim 7, wherein the constant pressure valve structure includes a constant pressure valve body, a first guide rod, a first nut, a hold-down spring, a third spring seat, and a moving piston; one end of the first guide rod is fixedly connected with the movable piston, the first nut is in threaded connection with the first guide rod, one end of the compression spring is abutted against the first nut, the other end of the compression spring is abutted against the third spring seat, and the third spring seat is detachably fixed in a valve cavity of the constant pressure valve body; the first nut is positioned on one side of the third spring seat, and the moving piston is positioned on the other side opposite to the third spring seat; the peripheral wall of the outlet of the valve cavity of the constant pressure valve body is provided with a high-pressure jet hole; a third flow hole is formed in the third spring seat; the movable piston can seal off the high-pressure jet hole.

9. The shock absorbing system of claim 1, wherein the third one-way valve comprises a first valve housing, a first valve stem, a first valve plate, and a first valve spring; a first side valve hole is formed in the side wall of the first valve shell, one end of the first valve rod is fixedly connected with the first valve plate, the first valve rod is inserted into the first valve shell, and the first valve rod can move relative to the first valve shell; one end of the first valve spring is abutted with the first valve plate, and the other end of the first valve spring is abutted with the bottom of the first valve shell; the first valve shell is also provided with a first main valve hole; the first valve plate is used for plugging the first main valve hole; when the pressure in the first pipeline is higher than the pressure in the high-pressure cylinder, the first valve plate moves downwards, so that the first main valve hole is communicated with the first side valve hole;

the fourth one-way valve comprises a second valve shell, a second valve rod, a second valve plate and a second valve spring; one surface of the second valve shell is provided with a second top valve hole, and the other surface of the second valve shell opposite to the second top valve hole is provided with a second bottom valve hole; one end of the second valve rod is fixedly connected with the second valve plate, the second valve rod is inserted into the second valve casing, and the second valve rod can move relative to the second valve casing; one end of the second valve spring is abutted with the second valve sheet, and the other end of the second valve spring is abutted with the outer top surface of the second valve shell; the second valve plate is used for plugging the second top valve hole; when the pressure in the low pressure cylinder is higher than the pressure in the first pipeline, the second valve plate moves downwards to enable the second top valve hole and the second bottom valve hole to be communicated.

10. A vehicle, characterized by comprising: -a vehicle body, -steerable wheels connected to the vehicle body, and-a shock absorbing system according to any of claims 1-9; the main piston rod is connected with the vehicle body, and the main cylinder body is connected with the wheels and used for enabling the main cylinder body to rotate relative to the main piston rod when the wheels turn.