CN113124084A - Shock absorber and transport vehicle - Google Patents
Shock absorber and transport vehicle Download PDFInfo
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- CN113124084A CN113124084A CN201911424441.3A CN201911424441A CN113124084A CN 113124084 A CN113124084 A CN 113124084A CN 201911424441 A CN201911424441 A CN 201911424441A CN 113124084 A CN113124084 A CN 113124084A
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- hole
- valve
- rotary valve
- shock absorber
- outer sleeve
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/10—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium using liquid only; using a fluid of which the nature is immaterial
- F16F9/14—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect
- F16F9/16—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect involving only straight-line movement of the effective parts
- F16F9/18—Devices with one or more members, e.g. pistons, vanes, moving to and fro in chambers and using throttling effect involving only straight-line movement of the effective parts with a closed cylinder and a piston separating two or more working spaces therein
- F16F9/185—Bitubular units
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16F—SPRINGS; SHOCK-ABSORBERS; MEANS FOR DAMPING VIBRATION
- F16F9/00—Springs, vibration-dampers, shock-absorbers, or similarly-constructed movement-dampers using a fluid or the equivalent as damping medium
- F16F9/32—Details
- F16F9/44—Means on or in the damper for manual or non-automatic adjustment; such means combined with temperature correction
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Fluid-Damping Devices (AREA)
Abstract
The invention discloses a shock absorber and a transport carrier, wherein the shock absorber comprises a shell, a piston, a push rod and an adjusting mechanism, wherein the shell is internally provided with a working cylinder; the piston divides the working cylinder into a first cavity area and a second cavity area, and is provided with a main flow guide channel which conducts the first cavity area and the second cavity area; the adjusting mechanism is arranged in the first cavity area, one end of the adjusting mechanism is fixedly connected with the piston, the other end, opposite to the adjusting mechanism, of the adjusting mechanism is fixedly connected with the push rod, the adjusting mechanism is provided with an auxiliary flow guide channel capable of being opened and closed, and the opened auxiliary flow guide channel conducts the first cavity area and the second cavity area; the number of the flow guide channels of the first cavity area and the second cavity area is controllable, so that the flow speed change control of oil in the shock absorber can be realized, namely the damping force adjustment of the shock absorber can be realized.
Description
Technical Field
The invention relates to the field of automobiles, in particular to a shock absorber and a transport carrier.
Background
The damping force of the common shock absorber is determined by the combination of the piston, the bottom valve and the valve plate, and after the adjustment of the common chassis adjustment scheme, the combination is determined, so that the damping force of the common shock absorber is determined.
The suspension stiffness and the damping of a vehicle pursuing comfort are set to be smaller, while a vehicle with control performance is opposite, and a common shock absorber cannot dynamically adjust the damping force in real time according to the operation working condition, so that the contradiction between the control performance and the comfort of the whole vehicle is difficult to balance.
Disclosure of Invention
The invention aims to provide a shock absorber and a transport vehicle, and aims to solve the problem that the existing shock absorber cannot adjust dynamic damping force.
In order to solve the technical problem, the invention provides a shock absorber, which comprises a shell, a piston, a push rod and an adjusting mechanism, wherein the shell is internally provided with a working cylinder; the piston divides the working cylinder into a first cavity area and a second cavity area, and is provided with a main flow guide channel which conducts the first cavity area and the second cavity area; the adjusting mechanism is arranged in the first cavity area, one end of the adjusting mechanism is fixedly connected with the piston, the other end, opposite to the adjusting mechanism, of the adjusting mechanism is fixedly connected with the push rod, the adjusting mechanism is provided with an auxiliary flow guide channel capable of being opened and closed, and the opened auxiliary flow guide channel is communicated with the first cavity area and the second cavity area.
In one embodiment, the adjusting mechanism is provided with a rotary valve and a valve outer sleeve; the rotary valve is hollow, the interior of the rotary valve is communicated with the second cavity area, and the peripheral side surface of the rotary valve is provided with a valve through hole which is arranged in the first cavity area; the valve outer sleeve surrounds the rotary valve, and outer sleeve through holes are formed in the peripheral side face of the valve outer sleeve; the rotation of the rotary valve is used for controlling the mutual alignment and dislocation separation of the valve through hole and the outer sleeve through hole, and the alignment of the valve through hole and the outer sleeve through hole opens the auxiliary flow guide channel.
In one embodiment, the rotary valve is a magnetic rotary valve, and the adjusting mechanism further comprises a plurality of windings arranged around the circumference of the magnetic rotary valve, wherein the windings in the energized state generate a magnetic field to drive the magnetic rotary valve to rotate.
In one embodiment, the push rod penetrates through the working cylinder and extends to the outside of the shell, a conductive circuit is arranged inside the push rod and is electrically connected with the plurality of windings, and the conductive circuit is used for obtaining electric energy and supplying the power to the windings.
In one embodiment, the number of the valve through holes and the number of the outer sleeve through holes are at least two, and the rotation of the rotary valve is used for controlling the simultaneous mutual alignment and simultaneous dislocation separation of each valve through hole and each outer sleeve through hole; the all sides of rotary valve still are equipped with the regulation and control through-hole, the rotation of rotary valve is used for control the regulation and control through-hole with the mutual alignment and the dislocation separation of overcoat through-hole, the regulation and control through-hole with the alignment of overcoat through-hole is opened vice water conservancy diversion passageway, and the regulation and control through-hole with when the overcoat through-hole aligns each other, each the valve through-hole with each the overcoat through-hole dislocation separation.
In one embodiment, the number of the valve through holes and the number of the outer sleeve through holes are at least two, and the rotation of the rotary valve is used for controlling the simultaneous mutual alignment and simultaneous dislocation separation of each valve through hole and each outer sleeve through hole; the side still is equipped with the regulation and control through-hole all around of valve overcoat, the rotation of rotary valve is used for control the regulation and control through-hole with the mutual alignment and the dislocation separation of valve through-hole, the regulation and control through-hole with the alignment of valve through-hole is opened vice water conservancy diversion passageway, and the regulation and control through-hole with when the valve through-hole aligns each other, each valve through-hole and each overcoat through-hole dislocation separation.
In one embodiment, a positioning block is arranged on the peripheral side surface of the rotary valve, a limiting block is arranged outside the peripheral side of the rotary valve of the shock absorber, and the limiting block is arranged on the moving track of the positioning block; when the rotary valve rotates in one direction until the positioning block abuts against the limiting block, the valve through hole is aligned with the outer sleeve through hole; when the rotary valve rotates in the opposite direction to the positioning block and the limiting block is abutted, the valve through hole and the outer sleeve through hole are separated in a staggered mode.
In one embodiment, the damper is further provided with a support ring clamped between the rotary valve and the valve housing.
In one embodiment, an oil storage cylinder is further arranged in the shell, the oil storage cylinder is formed outside the periphery of the working cylinder, the oil storage cylinder is communicated with the working cylinder, and a bottom valve is arranged on a communication oil passage of the oil storage cylinder and the working cylinder.
In order to solve the technical problem, the invention provides a transport vehicle which comprises a wheel and the shock absorber, wherein the shock absorber is mounted on the wheel.
The invention has the following beneficial effects:
the piston is provided with a main flow guide channel which conducts the first cavity area and the second cavity area, so that oil in the first cavity area and the second cavity area can flow between the two cavity areas when the piston moves, and the adjusting mechanism is provided with at least one openable auxiliary flow guide channel which conducts the first cavity area and the second cavity area, namely the number of the flow guide channels of the first cavity area and the second cavity area is controllable, so that the flow speed change control of the oil in the shock absorber can be realized, and the damping force adjustment of the shock absorber can be realized.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a cross-sectional structural schematic view of a first embodiment of a shock absorber;
FIG. 2 is a cross-sectional view of a second embodiment of the shock absorber;
FIG. 3 is a schematic view of the secondary flow directing passage of FIG. 2 in an open state;
FIG. 4 is a schematic view of the closed state of the secondary flow directing passage of FIG. 2;
FIG. 5 is a cross-sectional view of a third embodiment of the shock absorber;
FIG. 6 is a first state diagram of a first control mode of the magnetic rotary valve;
FIG. 7 is a second state diagram of the first control mode of the magnetic rotary valve;
FIG. 8 is a first state diagram of a second control mode of the magnetic rotary valve;
FIG. 9 is a second state diagram of a second control mode of the magnetic rotary valve;
FIG. 10 is a state diagram III of the magnetic rotary valve in a second control mode;
FIG. 11 is a first state diagram of a third control mode of the magnetic rotary valve;
FIG. 12 is a second state diagram of a third control mode of the magnetic rotary valve;
FIG. 13 is a state diagram III of a third control mode of the magnetic rotary valve;
FIG. 14 is a state diagram four of the third control mode of the magnetic rotary valve;
FIG. 15 is a cross-sectional view of a fourth embodiment of the shock absorber;
FIG. 16 is a schematic illustration of a rotary valve configuration for a fifth embodiment of the shock absorber;
FIG. 17 is a fully open revealing view of a secondary flow guide passage of the fifth embodiment of the shock absorber;
FIG. 18 is a schematic view of a fifth embodiment of a shock absorber with a secondary flowpath partially open;
FIG. 19 is a fully open secondary guide passage revealing view of a sixth embodiment of the shock absorber;
FIG. 20 is a schematic view of a sixth embodiment of a shock absorber with a secondary flowpath partially open;
FIG. 21 is a view of the rotary valve of the seventh embodiment of the shock absorber in a clockwise rotation;
FIG. 22 is a counterclockwise rotary valve state view of the seventh embodiment of the shock absorber.
The reference numbers are as follows:
10. a housing; 11. a working cylinder; 111. a first cavity region; 112. a second cavity region; 12. a reserve tube;
20. a piston; 30. a push rod;
40. an adjustment mechanism; 41. a secondary flow guide channel; 42. rotating the valve; 421. a valve through hole; 422. positioning blocks; 43. a valve housing; 431. a through hole is sleeved outside;
(44, a1, a2, A3, a4, a5, a6, a7, A8), a winding;
50. a conductive circuit;
60. regulating and controlling the through hole;
70. a limiting block; 80. a support ring; 90. a bottom valve.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.
A first embodiment of the shock absorber is shown in fig. 1, and includes a housing 10 having a cylinder 11 therein, a piston 20 mounted in the cylinder 11 in a reciprocating manner, a push rod 30 for pushing the piston 20 to move, and an adjusting mechanism 40; the piston 20 divides the cylinder 11 into a first chamber area 111 and a second chamber area 112, and the piston 20 is provided with a main flow guide channel (not shown) which leads the first chamber area 111 and the second chamber area 112; the adjusting mechanism 40 is arranged in the first cavity area 111, one end of the adjusting mechanism 40 is fixedly connected with the piston connecting rod 20, the other end opposite to the adjusting mechanism is fixedly connected with the push rod 30, the adjusting mechanism 40 is provided with an auxiliary flow guide channel 41 capable of being opened and closed, and the opened auxiliary flow guide channel 41 conducts the first cavity area 111 and the second cavity area 112.
Specifically, at this time, the first cavity area 111 is disposed above the piston 20, the second cavity area 112 is disposed below the piston 20, the adjusting mechanism 40 is disposed above the piston 20, and the push rod 30 is connected and fixed with the piston 20 through the adjusting mechanism 40, so that the push rod 30 can simultaneously drive the adjusting mechanism 40 and the piston 20 to perform a linear reciprocating motion.
It should be noted that the first chamber section 111 and the second chamber section 112 are a chamber section with a changeable accommodation space, for example, when the piston 20 moves upward, the accommodation space of the first chamber section 111 will become smaller and the accommodation space of the second chamber section 112 will become larger, whereas when the piston 20 moves downward, the accommodation space of the first chamber section 111 will become larger and the accommodation space of the second chamber section 112 will become smaller.
In an application, the working cylinder 11 is filled with oil, for example, assuming that the oil is placed in the second chamber 112 at this time, if the piston 20 moves downward, the piston 20 applies pressure to the oil, so that the oil flows into the first chamber 111 through the main flow guide, and a damping force is formed; if the damping force of the shock absorber needs to be changed, the adjusting mechanism 40 can be controlled to open the auxiliary flow guide channel 41, namely the oil liquid circulation is increased, so that the damping force is reduced, and the dynamic regulation and control of the damping force are realized.
For example, the adjusting mechanism 40 may be hollow inside the adjusting mechanism 40, the inside of the adjusting mechanism 40 is kept communicated with the second cavity 112, a valve is disposed on the peripheral wall of the adjusting mechanism 40, the valve is disposed in the first cavity 111, that is, the adjusting mechanism 40 forms the auxiliary flow guide channel 41, and when the valve is opened, the auxiliary flow guide channel 41 is communicated between the first cavity 111 and the second cavity 112.
Of course, the number of the valves is not limited, and may be one or more, but if the valves are provided in plurality, when the valves are opened simultaneously, the flow rate of the oil is the largest, and the damping force becomes the smallest, and when only part of the valves are opened, the flow rate of the oil is small, so that the damping force becomes larger, and therefore, when all the valves are in the closed state, the flow rate of the oil will become the smallest, and the damping force becomes the largest.
In addition, the main flow guide channel is a through groove formed in the piston 20, and the arrangement of the main flow guide channel ensures that the first cavity area 111 and the second cavity area 112 are communicated at any time, so that when the auxiliary flow guide channel 41 is closed, oil can still flow between the first cavity area 111 and the second cavity area 112.
A second embodiment of the shock absorber is shown in figures 2 to 4 and corresponds substantially to the first embodiment of the shock absorber except that the adjustment mechanism 40 is provided with a rotary valve 42 and a valve housing 43; the rotary valve 42 is hollow, the interior of the rotary valve 42 is communicated with the second chamber area 112, the peripheral side surface of the rotary valve 42 is provided with a valve through hole 421, and the valve through hole 421 is arranged in the first chamber area 111; the valve outer sleeve 43 surrounds the rotary valve 42, and the peripheral side surface of the valve outer sleeve 43 is provided with an outer sleeve through hole 431; the rotation of the rotary valve 42 controls the alignment and the misalignment of the valve through hole 421 and the outer sleeve through hole 431, and the alignment of the valve through hole 421 and the outer sleeve through hole 431 opens the sub fluid guide passage 41.
When the valve is applied, the rotation of the rotary valve 42 can be controlled to realize the opening and closing of the auxiliary diversion channel 41; for example, the rotary valve 42 can be controlled to rotate until the valve through hole 421 and the outer sleeve through hole 431 are aligned with each other, at this time, the auxiliary diversion channel 41 is opened, and the communication between the first chamber region 111 and the second chamber region 112 increases the flow rate of the oil, so as to realize the down regulation of the damping force; the rotary valve 42 can also be controlled to rotate until the valve through hole 421 and the outer sleeve through hole 431 are dislocated and separated, at this time, the secondary flow guide channel 41 is closed, and the first cavity area 111 and the second cavity area 112 are only communicated by the primary flow guide channel, so that the damping force is adjusted upwards.
It should be noted that the rotary valve 42 can be rotated by a variety of means, such as by a motor driving the rotary valve 42 through a gear train, or by electromagnetic driving, as selected by the skilled person according to the particular application.
A third embodiment of the damper is shown in fig. 5, which is substantially identical to the second embodiment of the damper, except that the rotary valve 42 is a magnetic rotary valve, the adjustment mechanism 40 further includes a plurality of windings 44, the plurality of windings 44 are disposed around a peripheral side of the magnetic rotary valve, and the windings 44 in an energized state generate a magnetic field to drive the magnetic rotary valve to rotate.
Because the rotary valve 42 is a magnetic rotary valve, when magnetic force is applied to the magnetic rotary valve, the magnetic rotary valve can rotate, namely the magnetic rotary valve can rotate by electrifying the control winding 44, the rotating direction of the magnetic rotary valve can be controlled by the current direction of the control winding 44, so that the opening and closing control of the auxiliary diversion channel 41 is realized, and compared with a mode of controlling the rotary valve 42 to rotate by utilizing a motor gear, the electromagnetic control structure is simpler, and the regulation and control are more convenient.
If it is necessary to provide the rotary valve 42 with two alignment points, as shown in fig. 6 and 7, the winding a1, the winding a2, the winding A3 and the winding a4 may be provided, the rotary valve 42 is rotated to a position corresponding to the winding a1 and the winding A3 when the winding a1 and the winding A3 are energized, and the rotary valve 42 is rotated to a position corresponding to the winding a2 and the winding a4 when the winding a2 and the winding a4 are energized, thereby achieving alignment control of the rotary valve 42 and the valve housing 43.
If it is necessary to provide the rotary valve 42 with three alignment points, as shown in fig. 8 to 10, the winding a1, the winding a2, the winding A3, the winding a4, the winding a5 and the winding A6 may be provided, the rotary valve 42 is rotated to a position corresponding to the winding a1 and the winding a4 when the winding a1 and the winding a4 are energized, the rotary valve 42 is rotated to a position corresponding to the winding a2 and the winding a5 when the winding a2 and the winding a5 are energized, and the rotary valve 42 is rotated to a position corresponding to the winding A3 and the winding A6 when the winding A3 and the winding A6 are energized, thereby achieving alignment control of the rotary valve 42 and the valve housing 43.
If it is necessary to provide the rotary valve 42 with four alignment points, as shown in fig. 11 to 14, it is possible to provide the winding a1, the winding a2, the winding A3, the winding A4, the winding A5, the winding A6, the winding A7, and the winding A8, and when the winding a1 and the winding A5 are energized, the rotary valve 42 is rotated to a position corresponding to the winding a1 and the winding A5, when the winding a2 and the winding A6 are energized, the rotary valve 42 is rotated to a position corresponding to the winding a2 and the winding A6, when the winding A3 and the winding A7 are energized, the rotary valve 42 is rotated to a position corresponding to the winding A3 and the winding A7, and when the winding A4 and the winding A8 are energized, the rotary valve 42 is rotated to a position corresponding to the winding A4 and the winding A8, thereby achieving alignment control of the rotary valve 42 and the valve housing 43.
In summary, 2N windings 44 may be defined, where N is a natural number greater than or equal to 2, and each two opposite windings 44 are a control unit, and each control unit is used to control the rotary valve 42 to rotate to a corresponding setting position.
It should be noted that the winding 44 is disposed outside the peripheral side of the rotary valve 42, and a certain gap should be provided between the winding 44 and the rotary valve 42 to prevent the winding 44 from affecting the rotation of the rotary valve 42; for example, the winding 44 and the rotary valve 42 may be disposed on the same horizontal plane, and the winding 44 and the rotary valve 42 have a certain gap in the horizontal direction; it is also possible to provide that the windings 44 are arranged on a different plane than the rotary valve 42, that a plurality of windings 44 are arranged around the central axis of the rotary valve 42, and that the windings 44 surround the circumference of the rotary valve 42 in the horizontal direction, which has the advantage that the control of the rotary valve 42 is also possible and that lateral space is saved, thereby increasing the space utilization of the shock absorber.
A fourth embodiment of the shock absorber is shown in fig. 15, which is substantially identical to the third embodiment of the shock absorber except that the push rod 30 extends through the cylinder 11 to the outside of the housing 10, the push rod 30 is provided with an electrically conductive circuit 50 therein, the electrically conductive circuit 50 is electrically connected to the plurality of windings 44, and the electrically conductive circuit 50 is used for obtaining electric energy to supply power to the windings 44.
When the shock absorber works, power needs to be supplied to the winding 44, and in order to improve the structural compactness of a product, the conductive circuit 50 is arranged inside the push rod 30 in the embodiment, namely, the conductive circuit 50 is laid without adding parts, and the conductive circuit 50 is prevented from being exposed in the working cylinder 11, so that the working stability of the shock absorber is improved.
In order to avoid the radial cheapness between the rotary valve 42 and the valve outer sleeve 42, the damper of the embodiment is further provided with the support ring 80, and the support ring 80 is clamped between the rotary valve 42 and the valve outer sleeve 43, so that the support ring 80 limits the radial movement of the rotary valve 42 and the valve outer sleeve, thereby realizing the supporting and fixing of the rotary valve 42 and the valve outer sleeve 43, and the support ring 80 can be connected and fixed with the piston 20 and other parts, thereby improving the structural compactness of the product.
In addition, in order to increase the oil storage capacity of the shock absorber, the oil storage cylinder 12 is further arranged inside the housing 10 of the embodiment, the oil storage cylinder 12 is formed outside the periphery of the working cylinder 11, the oil storage cylinder 12 is communicated with the working cylinder 11, the communicating oil duct between the oil storage cylinder 12 and the working cylinder 11 is provided with the bottom valve 90, after the oil storage cylinder 12 is additionally arranged, the oil storage capacity of the shock absorber is greatly increased, the oil circulation between the oil storage cylinder 12 and the working cylinder 11 can be adjusted through the bottom valve 90, and the damping force can be conveniently adjusted.
A fifth embodiment of the shock absorber is shown in fig. 16 to 18, which is substantially identical to the fourth embodiment of the shock absorber except that the number of the valve through holes 421 and the outer housing through holes 431 is at least two, and the rotation of the rotary valve 42 serves to control the simultaneous alignment and the simultaneous dislocation separation of the respective valve through holes 421 and the respective outer housing through holes 431; the peripheral side surface of the rotary valve 42 is further provided with a regulating through hole 60, the rotation of the rotary valve 42 is used for controlling the mutual alignment and dislocation separation of the regulating through hole 60 and the outer sleeve through hole 431, the alignment of the regulating through hole 60 and the outer sleeve through hole 431 opens the auxiliary flow guide channel 41, and when the regulating through hole 60 and the outer sleeve through hole 431 are mutually aligned, each valve through hole 421 and each outer sleeve through hole 431 are dislocated and separated.
The effect of this embodiment is to increase the adjustment range of the damping force, for example, when the valve through hole 421 and the outer sleeve through hole 431 are both two and the regulating through hole 60 is one, when the rotary valve 42 rotates to align the two valve through holes 421 and the two outer sleeve through holes 431, it can be understood that the oil inlet/outlet of the secondary guide passage 41 is the largest, that is, the damping force is the smallest.
When the rotary valve 42 rotates to align the regulating through hole 60 and the outer sleeve through hole 431, the valve through hole 421 and the outer sleeve through hole 431 are in a staggered separated state, which means that the oil inlet and outlet of the auxiliary flow guide channel 41 become smaller, and at this time, the damping force will increase.
When the rotary valve 42 rotates to the position that the regulating through hole 60 is separated from the outer sleeve through hole 431 in a staggered mode, and the valve through hole 421 is also separated from the outer sleeve through hole 431 in a staggered mode, it can be understood that only the main flow channel is used for oil liquid to flow, namely, the damping force is maximized; therefore, the purpose of additionally arranging the regulating through hole 60 is to expand the damping force regulating range so as to meet the requirements of more use scenes.
Of course, the number of the regulating through holes 60 is not limited to one, and may be two or more, and as long as the position sequence of the regulating through holes 60, the valve through holes 421 and the outer sleeve through holes 431 is designed reasonably, various alignment combinations of the through holes can be realized, and thus, it is not described here.
It should be noted that, when there are a plurality of valve through holes 42, the valve through holes 421 may be arranged at intervals in the circumferential direction of the rotary valve 42 on the same horizontal plane, the valve through holes 421 may also be arranged at intervals in the axial direction of the rotary valve 42 on different horizontal planes, or the valve through holes 421 may be arranged at intervals in the axial direction of the rotary valve 42 on the same linear direction, but whatever arrangement is adopted, the regulating through holes 60 should be ensured to be arranged at intervals in the axial direction of the rotary valve 42 with at least one valve through hole 421.
A sixth embodiment of the shock absorber is shown in fig. 19 and 20, which is substantially identical to the fifth embodiment of the shock absorber except that the number of the valve through holes 421 and the outer housing through holes 431 is at least two, and the rotation of the rotary valve 42 serves to control the simultaneous alignment and the simultaneous dislocation separation of the respective valve through holes 421 and the respective outer housing through holes 431; the peripheral side surface of the valve outer sleeve 43 is further provided with a regulating through hole 60, the rotation of the rotary valve 42 is used for controlling the mutual alignment and dislocation separation of the regulating through hole 60 and the valve through hole 421, the alignment of the regulating through hole 60 and the valve through hole 421 opens the auxiliary flow guide channel 41, and when the regulating through hole 60 and the valve through hole 421 are mutually aligned, each valve through hole 421 and each outer sleeve through hole 431 are dislocated and separated.
The effect of this embodiment is to increase the adjustment range of the damping force, for example, when the valve through hole 421 and the outer sleeve through hole 431 are both two and the regulating through hole 60 is one, when the rotary valve 42 rotates to align the two valve through holes 421 and the two outer sleeve through holes 431, it can be understood that the oil inlet/outlet of the secondary guide passage 41 is the largest, that is, the damping force is the smallest.
When the rotary valve 42 rotates to align the regulating through hole 60 and the valve through hole 421, the valve through hole 421 and the outer sleeve through hole 431 are in a staggered separated state, which means that the oil inlet and outlet of the secondary guide passage 41 become smaller, and at this time, the damping force will increase.
When the rotary valve 42 rotates to the position where the regulating through hole 60 is separated from the valve through hole 421 in a staggered manner, and the valve through hole 421 is also separated from the outer sleeve through hole 431 in a staggered manner, it can be understood that only the main flow passage is used for oil to flow, that is, the damping force becomes maximum; therefore, the purpose of adding the regulating through hole 60 on the valve outer sleeve 43 is to expand the damping force regulating range to meet the requirements of more use scenes.
A seventh embodiment of the shock absorber is shown in fig. 21 and 22, which is substantially the same as the fifth embodiment of the shock absorber, except that a positioning block 422 is disposed on the peripheral side surface of the rotary valve 42, a limiting block 70 is disposed on the peripheral side of the rotary valve 42 of the shock absorber, and the limiting block 70 is disposed on the moving track of the positioning block 422; when the rotary valve 42 is rotated in one direction until the positioning block 422 abuts against the limiting block 70, the valve through hole 421 and the outer sleeve through hole 431 are aligned with each other; when the rotary valve 42 is rotated in the opposite direction until the positioning block 422 abuts against the stopper 70, the valve through hole 421 and the outer sleeve through hole 431 are dislocated and separated.
For example, when the rotary valve 42 rotates clockwise to the limit, the positioning block 422 will abut against the limit block 70, so as to limit the rotary valve 42 to continue rotating clockwise, thereby ensuring that the valve through hole 421 and the outer sleeve through hole 431 are in the state of dislocation and separation; similarly, when the rotary valve 42 rotates counterclockwise to the limit, the positioning block 422 abuts against the limiting block 70 to ensure that the valve through hole 421 and the outer sleeve through hole 431 are aligned with each other.
Wherein, set up the purpose of locating piece 422 and stopper 70 and avoid the rotary valve 42 rotation range too big to ensure that the rotation of rotary valve 42 is accurate controllable, and for the convenience of stopper 70's installation is fixed, can set up stopper 70 into the arc form, so that stopper 70 can overlap in the periphery of rotary valve 42 outside.
In addition, since the rotary valve 42 is a magnetic rotary valve, the magnetic rotary valve can be controlled to rotate after the winding 44 is electrified, and the magnetic rotary valve can be controlled to rotate for an angle and then be kept unchanged as long as the electrified state of the winding 44 is kept unchanged, so that the regulating through hole 60 and the outer sleeve through hole 431 can be aligned at the position, and the multi-stage change control of the damping force is realized.
The invention also provides a transport carrier, which comprises wheels and the shock absorber, wherein the shock absorber is arranged on the wheels, and after the shock absorber is arranged on the wheels, the damping force of the shock absorber can be adjusted according to different environments, so that the running requirements under different conditions are met.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention.
Claims (10)
1. A shock absorber is characterized in that the shock absorber comprises a shock absorber body,
the device comprises a shell, a piston, a push rod and an adjusting mechanism, wherein the shell is internally provided with a working cylinder, the piston is arranged in the working cylinder in a reciprocating motion mode, and the push rod is used for pushing the piston to move;
the piston divides the working cylinder into a first cavity area and a second cavity area, and is provided with a main flow guide channel which conducts the first cavity area and the second cavity area;
the adjusting mechanism is arranged in the first cavity area, one end of the adjusting mechanism is fixedly connected with the piston, the other end, opposite to the adjusting mechanism, of the adjusting mechanism is fixedly connected with the push rod, the adjusting mechanism is provided with an auxiliary flow guide channel capable of being opened and closed, and the auxiliary flow guide channel is opened to conduct the first cavity area and the second cavity area.
2. The shock absorber according to claim 1,
the adjusting mechanism is provided with a rotary valve and a valve outer sleeve;
the rotary valve is hollow, the interior of the rotary valve is communicated with the second cavity area, and the peripheral side surface of the rotary valve is provided with a valve through hole which is arranged in the first cavity area;
the valve outer sleeve surrounds the rotary valve, and outer sleeve through holes are formed in the peripheral side face of the valve outer sleeve;
the rotation of the rotary valve is used for controlling the mutual alignment and dislocation separation of the valve through hole and the outer sleeve through hole, and the alignment of the valve through hole and the outer sleeve through hole opens the auxiliary flow guide channel.
3. The shock absorber according to claim 2, wherein said rotary valve is a magnetic rotary valve, said adjustment mechanism further comprising a plurality of windings disposed around a peripheral side of said magnetic rotary valve, said windings in an energized state generating a magnetic field to drive said magnetic rotary valve to rotate.
4. The shock absorber according to claim 3, wherein said push rod extends through said cylinder to an exterior of said housing, said push rod having an electrically conductive circuit disposed therein, said electrically conductive circuit being electrically connected to a plurality of said windings, said electrically conductive circuit being configured to draw electrical energy to power said windings.
5. The shock absorber according to claim 2,
the number of the valve through holes and the number of the outer sleeve through holes are at least two, and the rotation of the rotary valve is used for controlling the valve through holes and the outer sleeve through holes to be aligned with each other and separated from each other in a staggered mode;
the all sides of rotary valve still are equipped with the regulation and control through-hole, the rotation of rotary valve is used for control the regulation and control through-hole with the mutual alignment and the dislocation separation of overcoat through-hole, the regulation and control through-hole with the alignment of overcoat through-hole is opened vice water conservancy diversion passageway, and the regulation and control through-hole with when the overcoat through-hole aligns each other, each the valve through-hole with each the overcoat through-hole dislocation separation.
6. The shock absorber according to claim 2,
the number of the valve through holes and the number of the outer sleeve through holes are at least two, and the rotation of the rotary valve is used for controlling the valve through holes and the outer sleeve through holes to be aligned with each other and separated from each other in a staggered mode;
the side still is equipped with the regulation and control through-hole all around of valve overcoat, the rotation of rotary valve is used for control the regulation and control through-hole with the mutual alignment and the dislocation separation of valve through-hole, the regulation and control through-hole with the alignment of valve through-hole is opened vice water conservancy diversion passageway, and the regulation and control through-hole with when the valve through-hole aligns each other, each valve through-hole and each overcoat through-hole dislocation separation.
7. The shock absorber according to claim 2,
the peripheral side of the rotary valve is provided with a positioning block, the periphery of the rotary valve is externally provided with a limiting block by the shock absorber, and the limiting block is arranged on the moving track of the positioning block;
when the rotary valve rotates in one direction until the positioning block abuts against the limiting block, the valve through hole is aligned with the outer sleeve through hole;
when the rotary valve rotates in the opposite direction to the positioning block and the limiting block is abutted, the valve through hole and the outer sleeve through hole are separated in a staggered mode.
8. The shock absorber as set forth in claim 1 further provided with a support ring sandwiched between said rotary valve and said valve housing.
9. The shock absorber according to claim 1, wherein a reserve tube is further provided inside said housing, said reserve tube being formed outside a peripheral side of said working tube, said reserve tube communicating with said working tube, and a bottom valve is provided on a communicating oil passage of said reserve tube and said working tube.
10. A transport vehicle comprising a wheel and the shock absorber of any one of claims 1 to 9, said wheel being fitted with said shock absorber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911424441.3A CN113124084A (en) | 2019-12-31 | 2019-12-31 | Shock absorber and transport vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911424441.3A CN113124084A (en) | 2019-12-31 | 2019-12-31 | Shock absorber and transport vehicle |
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| Publication Number | Publication Date |
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| CN113124084A true CN113124084A (en) | 2021-07-16 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201911424441.3A Pending CN113124084A (en) | 2019-12-31 | 2019-12-31 | Shock absorber and transport vehicle |
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Citations (7)
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|---|---|---|---|---|
| US4620619A (en) * | 1982-05-20 | 1986-11-04 | Atsugi Motor Parts Co., Ltd. | Variable-damping-force shock absorber |
| US4789051A (en) * | 1987-06-08 | 1988-12-06 | General Motors Corporation | Damper with internally powered selective ride valving |
| CN101280817A (en) * | 2008-05-26 | 2008-10-08 | 重庆大学 | Adjustable vibration damper |
| EP2116739A2 (en) * | 2008-05-09 | 2009-11-11 | Fox Factory, Inc. | Methods and apparatus for position sensitive suspension dampening |
| CN107458276A (en) * | 2016-06-03 | 2017-12-12 | 苏斯帕有限公司 | Shock absorber |
| CN108071734A (en) * | 2017-08-24 | 2018-05-25 | 深圳市罗伯医疗科技有限公司 | Damper and assistant robot |
| CN209781724U (en) * | 2019-01-30 | 2019-12-13 | 中国科学院力学研究所 | novel valve |
-
2019
- 2019-12-31 CN CN201911424441.3A patent/CN113124084A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4620619A (en) * | 1982-05-20 | 1986-11-04 | Atsugi Motor Parts Co., Ltd. | Variable-damping-force shock absorber |
| US4789051A (en) * | 1987-06-08 | 1988-12-06 | General Motors Corporation | Damper with internally powered selective ride valving |
| EP2116739A2 (en) * | 2008-05-09 | 2009-11-11 | Fox Factory, Inc. | Methods and apparatus for position sensitive suspension dampening |
| CN101280817A (en) * | 2008-05-26 | 2008-10-08 | 重庆大学 | Adjustable vibration damper |
| CN107458276A (en) * | 2016-06-03 | 2017-12-12 | 苏斯帕有限公司 | Shock absorber |
| CN108071734A (en) * | 2017-08-24 | 2018-05-25 | 深圳市罗伯医疗科技有限公司 | Damper and assistant robot |
| CN209781724U (en) * | 2019-01-30 | 2019-12-13 | 中国科学院力学研究所 | novel valve |
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Application publication date: 20210716 |
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