CN112984027A - Damping-controllable bidirectional-acting cylinder type shock absorber piston - Google Patents
Damping-controllable bidirectional-acting cylinder type shock absorber piston Download PDFInfo
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- CN112984027A CN112984027A CN202110409599.4A CN202110409599A CN112984027A CN 112984027 A CN112984027 A CN 112984027A CN 202110409599 A CN202110409599 A CN 202110409599A CN 112984027 A CN112984027 A CN 112984027A
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- 230000035939 shock Effects 0.000 title claims abstract description 33
- 239000006096 absorbing agent Substances 0.000 title claims abstract description 32
- 238000013016 damping Methods 0.000 claims abstract description 103
- 230000006835 compression Effects 0.000 claims abstract description 8
- 238000007906 compression Methods 0.000 claims abstract description 8
- 239000012530 fluid Substances 0.000 claims description 6
- 239000007788 liquid Substances 0.000 claims description 4
- 238000003466 welding Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000011065 in-situ storage Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000008707 rearrangement Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
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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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- 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
- F16F9/3207—Constructional features
- F16F9/3214—Constructional features of pistons
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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
- F16F9/34—Special valve constructions; Shape or construction of throttling passages
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Fluid-Damping Devices (AREA)
Abstract
The invention relates to a damping-controllable double-acting cylinder type shock absorber piston which comprises a middle sleeve, an outer sleeve, an inner column and a damping valve body, wherein the top of the inner column is welded with an upper hanging ring, the bottom of the inner column is provided with a lower cover plate, the middle sleeve is sleeved outside the inner column, the top of the middle sleeve is axially limited by a nut I in threaded connection with the inner column, the bottom of the middle sleeve is matched with the damping valve body, the outer sleeve is sleeved outside the middle sleeve, the top of the middle sleeve is axially limited by a nut II in threaded connection with the middle sleeve, the bottom of the middle sleeve is provided with an upper cover plate, the upper part of the middle sleeve is connected with a middle control rod, an outer control rod connected with the outer sleeve is arranged below the middle control rod. The flow area of the damping valve is controlled by rotating and controlling the relative positions of the outer sleeve, the middle sleeve and the inner column, so that the damping force formed by the compression stroke and the extension of the shock absorber can be respectively controlled; the control can refer to external environment or road surface input, and can be applied to intelligent control of vehicle body vibration.
Description
Technical Field
The invention belongs to the technical field of shock absorbers, and particularly relates to a bidirectional-acting cylinder type shock absorber, in particular to a damping-controllable bidirectional-acting cylinder type shock absorber piston which is suitable for a mechanical structure of two or more wheels of an automobile, a motorcycle and the like, wherein the shock absorber is required to reduce vibration.
Background
Vehicles such as automobiles and motorcycles jolt during driving due to the undulation of the road surface, which affects the riding comfort and the operation stability. The shock absorber is arranged between the automobile body and the wheels, so that vibration energy can be consumed, and the vibration of the automobile body is reduced, thereby improving the comfort and the operation stability of the automobile.
The piston of the common double-acting cylinder shock absorber adopts an extension valve and a circulation valve, the shock absorber has ideal damping by utilizing the pretightening force of the valve, and when oil in a shock absorber cavity flows through the valve under the action of pressure difference, the oil pushes the valve, so that the kinetic energy of the oil is consumed, and the shock absorption effect is achieved. The common double-acting cylinder type shock absorber is simple in structure, can be widely applied to the existing passive suspension, but cannot adjust the damping, cannot adjust the damping according to the vibration condition of an automobile body and the road surface height condition, and is not intelligent.
Disclosure of Invention
The invention aims to provide a damping-controllable double-acting cylinder type shock absorber piston to solve the problem of intelligently adjusting the damping of a shock absorber.
The purpose of the invention is realized by the following technical scheme:
a damping controllable two-way acting cylinder type shock absorber piston mainly comprises a middle sleeve 6, an outer sleeve 7, an inner column 11 and a damping valve body 12;
the top of the inner column 11 is welded and fixed with the upper hoisting ring 1, and the bottom of the inner column is provided with a lower cover plate 16 which is integrally formed with the inner column; the middle sleeve 6 is sleeved outside the inner column 11 and can rotate relative to the inner column 11, the top of the middle sleeve 6 is axially limited by a nut I2 in threaded connection with the inner column 11, the bottom of the middle sleeve is matched with the damping valve body 12, and the tail end of the middle sleeve 6 is in threaded connection with a nut III 10 arranged inside the damping valve body 12; the outer sleeve 7 is sleeved outside the middle sleeve 6 and can rotate relative to the middle sleeve 6, the top of the outer sleeve 7 is axially limited by a nut II 4 in threaded connection with the middle sleeve 6, and the bottom of the outer sleeve is provided with an upper cover plate 15 integrally formed with the outer sleeve;
the upper part of the middle thimble 6 is connected with a middle control rod 14 which penetrates through the outer thimble 7 and extends outwards, and an outer control rod 13 which is connected with the outer thimble 7 and extends outwards is arranged below the middle control rod 14;
the damping valve body 12 is provided with two pairs of opposite through grooves, a damping valve and a conical pre-tightening spring 8 sleeved outside the damping valve are arranged in the damping valve body, the small end of the damping valve supports the valve 9, and the large end of the damping valve supports the through grooves; the damping valve is an expansion valve or a flow valve; the upper cover plate 15 is provided with a circular through hole which is overlapped with the through grooves, and an extension valve is arranged in the damping valve body 12 at the overlapped position and used for controlling the fluid circulation during the extension stroke; the lower cover plate 16 is provided with a circular through hole which is overlapped with the other pair of through grooves, and a circulating valve is arranged in the damping valve body 12 at the overlapped part and used for controlling the fluid circulation during the compression stroke.
Furthermore, the outer sleeve 7 is a long cylindrical pipe, the bottom of the outer sleeve is provided with a fan-shaped disc-shaped upper cover plate 15, and the upper cover plate 15 is provided with two circular through holes which are spaced by 90 degrees and have the same size as the through groove of the damping valve body 12; the upper part of the outer sleeve 7 is provided with a threaded hole, one end of an outer control rod 13 is inserted into the threaded hole along the horizontal direction and is in threaded connection with the outer sleeve 7, the other end of the outer control rod extends out of the outer sleeve 7, the upper part of the threaded hole is provided with a fan-shaped through groove, and the middle control rod 14 can extend out through the fan-shaped through groove.
Furthermore, the middle casing 6 is a long cylindrical pipe, a thread is processed at the bottom of the long cylindrical pipe, a hexagonal column is arranged above the thread, a threaded hole is formed in the upper end of the middle casing 6, one end of the middle control rod 14 penetrates through the fan-shaped through groove of the outer casing 7 in the horizontal direction and is inserted into the threaded hole to be in threaded connection with the middle casing 6, the other end of the middle control rod extends out of the outer casing 7, and a thread is processed at the top of the middle casing 6 and is matched with the nut II 4 to fix the axial position of the outer casing 7.
Furthermore, the inner column 11 is a long cylindrical rod, the bottom of the inner column is provided with a lower cover plate 16 with the same shape as the upper cover plate, the upper end of the inner column 11 is provided with a thread which is matched with the nut I2 and used for fixing the middle sleeve 6, and the top of the inner column 11 above the thread is of a cylindrical structure with a smaller shaft diameter and used for welding the upper hanging ring 1.
Further, damping valve body 12 is the cylinder tube-shape, and there is the hexagon in the centre to lead to the groove, and this hexagon leads to the groove and well sleeve 6's hexagon post cooperation for fixed damping valve body 12, damping valve body 12's edge has two pairs of logical grooves, and four lead to groove symmetric distribution, lead to the groove tip and be the round platform shape, the round platform top is led to the groove by two big or small cylinders by last to be connected and is formed.
Furthermore, a washer II 5 is additionally arranged between the nut II 4 and the outer sleeve 7, and the nut II 4 is welded on the middle sleeve 6 after the position is determined.
Furthermore, a gasket I3 is additionally arranged between the nut I2 and the middle sleeve 6, and the nut I2 is welded on the inner column 11 after the position is determined.
Further, when the middle control rod 14 and the outer control rod 13 rotate, the positions of the lower cover plate 16 and the upper cover plate 15 relative to the damping valve body 12 can be respectively controlled, the flow area of the damping oil liquid is controlled, and the damping force of the shock absorber is further controlled.
Further, the hexagonal column of the middle sleeve 6 and the long cylindrical pipe form a shoulder, and the damping valve body 12 is axially positioned through the shoulder of the middle sleeve 6 and the nut III 10.
Compared with the prior art, the invention has the beneficial effects that:
the damping-controllable double-acting cylinder type shock absorber piston controls the flow area of a damping valve by rotating and controlling the relative positions of the outer sleeve, the middle sleeve and the inner column, thereby respectively controlling the damping force formed by the compression stroke and the extension of the shock absorber; the control can refer to external environment or road surface input, and can be applied to intelligent control of vehicle body vibration.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is a schematic structural view of a piston of a dual-acting shock absorber of the present invention with controlled damping;
2-3 are schematic structural views of the damping valve body;
FIGS. 4-5 are views of the outer control rod in a rotated state;
6-7 in-situ state diagrams of the outer control rod;
FIG. 8 is a schematic view of a fan-shaped through slot structure on the outer sleeve;
FIG. 9 is a schematic view of the structure of the upper cover plate;
FIG. 10 is a view showing a state in which the upper cover plate is rotated;
FIG. 11 is a view of the upper cover plate in a home position;
FIG. 12 is a view showing a state in which the lower cover plate is rotated;
FIG. 13 is a view of the lower cover plate in a home position;
FIG. 14 is a schematic view of the upper end of the casing;
FIG. 15 is a schematic view of the lower end of the casing;
FIG. 16 is a schematic view of the valve structure;
FIG. 17 is a schematic view of a valve-pretension spring;
FIG. 18 is a control rod and outer control rod control flow diagram.
In the figure, 1, an upper lifting ring 2, a nut I3, a gasket I4, a nut II 5, a gasket II 6, a middle sleeve 7, an outer sleeve 8, a pre-tightening spring 9, a valve 10, a nut III 11, an inner column 12, a damping valve body 13, an outer control rod 14, a middle control rod 15, an upper cover plate 16 and a lower cover plate.
Detailed Description
The invention is further illustrated by the following examples:
the present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, it need not be further defined and explained in subsequent figures. Meanwhile, in the description of the present invention, the terms "first", "second", and the like are used only for distinguishing the description, and are not to be construed as indicating or implying relative importance.
As shown in fig. 1 to 18, the damping-controllable double-acting cylinder type shock absorber piston of the present invention is mainly composed of a middle sleeve 6, an outer sleeve 7, an inner column 11 and a damping valve body 12.
The top of the inner column 11 is welded and fixed with the upper hoisting ring 1, and the bottom of the inner column is provided with a lower cover plate 16 which is integrally formed with the inner column; the middle sleeve 6 is sleeved outside the inner column 11 and can rotate relative to the inner column 11, the top of the middle sleeve 6 is limited by a nut I2 in threaded connection with the inner column 11, the bottom of the middle sleeve 6 is matched with the damping valve body 12, and the tail end of the middle sleeve 6 is in threaded connection with a nut III 10 arranged inside the damping valve body 12; the outer sleeve 7 is sleeved outside the middle sleeve 6 and can rotate relative to the middle sleeve 6, the top of the outer sleeve 7 is limited by a nut II 4 in threaded connection with the middle sleeve 6, and the bottom of the outer sleeve is provided with an upper cover plate 15 integrally formed with the outer sleeve;
the upper part of the middle thimble 6 is connected with a middle control rod 14 which penetrates through the outer thimble 7 and extends outwards, and an outer control rod 13 which is connected with the outer thimble 7 and extends outwards is arranged below the middle control rod 14;
the damping valve body 12 is provided with two pairs of through grooves in opposite directions, a damping valve and a pre-tightening spring 8 sleeved outside the damping valve are arranged in the through grooves, the pre-tightening spring 8 is a conical spring and sleeved outside the damping valve, a small end supports the valve 9, a large end supports the through grooves and is used for extending stroke and compressing stroke to provide pre-tightening force. The damping valve is an expansion valve or a flow valve; the upper cover plate 15 is provided with a circular through hole which is overlapped with the through grooves, and an extension valve is arranged in the damping valve body 12 at the overlapped position and used for controlling the fluid circulation during the extension stroke; the lower cover plate 16 is provided with a circular through hole which is overlapped with the other pair of through grooves, and a circulating valve is arranged in the damping valve body 12 at the overlapped part and used for controlling the fluid circulation during the compression stroke.
In one embodiment of the present invention, the outer sleeve 7 is a long cylindrical tube, and the bottom of the outer sleeve is provided with a fan-shaped disc-shaped upper cover plate 15, and the upper cover plate 15 is provided with two circular through holes spaced by 90 degrees, and the circular through holes are the same as the through grooves of the damping valve body 12 in size. The upper part of the outer sleeve 7 is provided with a threaded hole, one end of an outer control rod 13 is inserted into the threaded hole along the horizontal direction and is in threaded connection with the outer sleeve 7, and the other end of the outer control rod extends out of the outer sleeve 7. The upper portion of the threaded hole has a fan-shaped through groove through which the center control rod 14 can protrude to the outside.
In one embodiment of the invention, the middle casing 6 is a long cylindrical pipe, the bottom of the middle casing is provided with threads, a hexagonal column is arranged above the threads, the upper end of the middle casing 6 is provided with a threaded hole, one end of a middle control rod 14 passes through the fan-shaped through groove of the outer casing 7 along the horizontal direction and is inserted into the threaded hole to be in threaded connection with the middle casing 6, and the other end of the middle control rod extends out of the outer casing 7. The top of the middle sleeve 6 is provided with threads which are matched with the nut II 4 and used for fixing the axial position of the outer sleeve 7.
According to one embodiment of the invention, the inner column 11 is a long cylindrical rod, the bottom of the inner column is provided with a lower cover plate 16 with the same shape as the upper cover plate, the upper end of the inner column 11 is provided with a thread which is matched with the nut I2 and used for fixing the middle sleeve 6, and the top of the inner column 11 above the thread is of a cylindrical structure with a smaller shaft diameter and used for welding the upper hanging ring 1.
In one embodiment of the present invention, the damping valve body 12 is in the shape of a cylindrical tube, and a hexagonal through groove is formed in the middle of the damping valve body, and the hexagonal through groove is matched with the hexagonal column of the middle sleeve 6 to fix the damping valve body 12. The edge of the damping valve body 12 is provided with two pairs of four smaller through grooves, the four through grooves are symmetrically distributed at intervals of 90 degrees, and different damping valves and pre-tightening springs 8 are arranged in the through grooves. Lead to the groove tip and be round platform shape, the round platform top is led to the groove by two cylinders of size under to and is connected and form, and the middle part cylinder leads to the groove shorter and cylinder radius less, and the other end cylinder leads to the groove longer and the radius great.
The damping valve is divided into an extension valve and a circulation valve, wherein the extension valve is arranged on the left side of the damping valve in figure 1, and the circulation valve is arranged on the right side of the damping valve. Each through groove is provided with a damping valve, each damping valve is provided with a valve 9, each pair of through grooves are opposite in direction, a pre-tightening spring 8 is sleeved outside the valve 9 and used for providing pre-tightening force, under the action of the pre-tightening force, the damping valve is closed, when a piston moves up and down in a piston cylinder (not shown), under the action of pressure difference, the damping valve is opened, and oil passes through the damping valve to generate damping force. When the middle control rod 14 and the outer control rod 13 are rotated, the area through which the oil flows can be changed, and the magnitude of the damping force can be controlled.
Specifically, the middle part of the valve 9 is a round rod, one end of the round rod is in a round platform shape and is matched with the through groove for blocking the through groove so as to control the circulation of oil liquid; the other end is cylindrical and is used for fixing the small end of the pre-tightening spring 8. The through grooves of the extension valve and the flow valve are opposite in direction, the pre-tightening spring 8 is a conical spring, the damping valve is sleeved outside, the small end supports the valve 9, the large end supports the through groove and is used for providing pre-tightening force, under the action of the pre-tightening force, each damping valve is in a closed state, and damping liquid cannot flow through the damping valve. When the damping valve moves relative to the piston cylinder under the action of external force, pressure difference is generated on the upper side and the lower side of the damping valve, the upper pressure is increased and the lower pressure is decreased in a stretching stroke, when the pressure difference is greater than the pre-tightening force of a pre-tightening spring 8 of the stretching valve, the stretching valve is opened, oil flows through a cylindrical through groove of the stretching valve, the circulating valve is self-locked, and the oil cannot flow through the circulating valve; in the compression stroke, the upper pressure is reduced, the lower pressure is increased, and when the pressure difference is greater than the pretightening force of the pretightening spring 8 of the circulation valve, the circulation valve is opened, oil circulates through the cylindrical through groove of the circulation valve, the expansion valve is self-locked, and the oil cannot circulate through the expansion valve.
As shown in fig. 18, when it is required to increase both the extension stroke damping and the compression stroke damping according to the environmental requirements, the rotation angle a1 of the middle control rod 14 relative to the inner column, the rotation angle a2 of the outer control rod 13 relative to the inner column, and a2> a 1; when the stretching stroke damping is only required to be increased, the middle control rod 14 keeps the original position relative to the inner column, and the outer control rod 13 rotates relative to the inner column by the angle a 2; when only the compression and extension stroke damping is needed, the rotation angles of the middle control rod 14 and the outer control rod 13 relative to the inner column are the same; when the damping formed by stretching and the damping of the compression-stretching stroke do not need to be adjusted, the middle control rod 14 and the outer control rod 13 are kept in situ.
According to one embodiment of the invention, a gasket II 5 is additionally arranged between the nut II 4 and the outer sleeve 7, the nut II 4 bears the action of axial force, the nut II 4 cannot be screwed too tightly due to relative rotation movement between the outer sleeve 7 and the middle sleeve 6, and the nut II 4 is welded on the middle sleeve 6 after the position is determined so as to prevent the nut II 4 from loosening.
According to one embodiment of the invention, a gasket I3 is additionally arranged between the nut I2 and the middle sleeve 6, the nut I2 bears the action of axial force, the nut I2 cannot be screwed too tightly due to relative rotation between the middle sleeve 6 and the inner column 11, and the nut I2 is welded on the inner column 11 after the position is determined so as to prevent the nut from loosening.
In the invention, the positions of the lower cover plate 16 and the upper cover plate 15 relative to the damping valve body 12 can be controlled by rotating the middle control rod 14 and the outer control rod 13, the flow area of damping oil is controlled, and the damping force of the shock absorber is further controlled.
The damping valve body 12 is matched with the hexagonal column of the middle sleeve 6 through the hexagonal through groove, plays roles in radial fixing and torque transmission, and prevents the damping valve body and the middle sleeve from being separated in the process of rotation control.
According to one embodiment of the invention, the hexagonal column of the middle sleeve 6 and the long cylindrical pipe form a shoulder, and the damping valve body 12 is axially positioned through the shoulder of the middle sleeve 6 and the nut III 10.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (9)
1. A damping-controllable double-acting cylinder shock absorber piston, characterized in that: mainly comprises a middle sleeve (6), an outer sleeve (7), an inner column (11) and a damping valve body (12);
the top of the inner column (11) is welded and fixed with the upper hoisting ring (1), and the bottom of the inner column is provided with a lower cover plate (16) which is integrally formed with the inner column; the middle sleeve (6) is sleeved outside the inner column (11) and can rotate relative to the inner column (11), the top of the middle sleeve (6) is axially limited by a nut I (2) in threaded connection with the inner column (11), the bottom of the middle sleeve is matched with the damping valve body (12), and the tail end of the middle sleeve (6) is in threaded connection with a nut III (10) arranged inside the damping valve body (12); the outer sleeve (7) is sleeved outside the middle sleeve (6) and can rotate relative to the middle sleeve (6), the top of the outer sleeve (7) is axially limited by a nut II (4) in threaded connection with the middle sleeve (6), and the bottom of the outer sleeve is provided with an upper cover plate (15) integrally formed with the outer sleeve;
the upper part of the middle casing pipe (6) is connected with a middle control rod (14) which penetrates through the outer casing pipe (7) and extends outwards, and an outer control rod (13) which is connected with the outer casing pipe (7) and extends outwards is arranged below the middle control rod (14);
the damping valve body (12) is provided with two pairs of opposite through grooves, a damping valve and a conical pre-tightening spring (8) sleeved outside the damping valve are arranged in the through grooves, the small end of the conical pre-tightening spring supports the valve (9), and the large end of the conical pre-tightening spring supports the through grooves; the damping valve is an expansion valve or a flow valve; the upper cover plate (15) is provided with a circular through hole which is superposed with the through grooves, and a stretching valve is arranged in the damping valve body (12) at the superposed position and used for controlling the fluid circulation during the stretching stroke; the lower cover plate (16) is provided with a circular through hole which is overlapped with the other pair of through grooves, and a circulating valve is arranged in the damping valve body (12) and used for controlling the circulation of fluid during a compression stroke.
2. A controlled damping, double-acting, barrel shock absorber piston as claimed in claim 1, wherein: the outer sleeve (7) is a long cylindrical pipe, the bottom of the outer sleeve is provided with a fan-shaped disc-shaped upper cover plate (15), and the upper cover plate (15) is provided with two circular through holes which are spaced by 90 degrees and have the same size as the through groove of the damping valve body (12); the upper part of the outer sleeve (7) is provided with a threaded hole, one end of an outer control rod (13) is inserted into the threaded hole along the horizontal direction and is in threaded connection with the outer sleeve (7), the other end of the outer control rod extends out of the outer sleeve (7), the upper part of the threaded hole is provided with a fan-shaped through groove, and the middle control rod (14) can extend out through the fan-shaped through groove.
3. A controlled damping, double-acting, barrel shock absorber piston as claimed in claim 1, wherein: the middle casing pipe (6) is a long cylindrical pipe, a thread is machined at the bottom of the long cylindrical pipe, a hexagonal column is arranged above the thread, a threaded hole is formed in the upper end of the middle casing pipe (6), one end of a middle control rod (14) penetrates through a fan-shaped through groove of the outer casing pipe (7) along the horizontal direction to be inserted into the threaded hole to be in threaded connection with the middle casing pipe (6), the other end of the middle control rod outwards extends out of the outer casing pipe (7), the top of the middle casing pipe (6) is machined with a thread to be matched with the nut II (4) and used for fixing the axial position of.
4. A controlled damping, double-acting, barrel shock absorber piston as claimed in claim 1, wherein: interior post (11) are long cylindrical rod, and there is a lower apron (16) that shape and upper cover plate are the same bottom it, and interior post (11) upper end processing has the screw thread, cooperates with nut I (2) for fixed well sleeve pipe (6), and the top of post (11) is the less cylinder structure of shaft diameter in the screw thread top for welding rings (1).
5. A controlled damping, double-acting, barrel shock absorber piston as claimed in claim 1, wherein: damping valve body (12) are the cylinder tube-shape, and there is the hexagon in the centre to lead to the groove, and this hexagon leads to the groove and the cooperation of the hexagon post of well sleeve pipe (6) for fixed damping valve body (12), the edge of damping valve body (12) has two pairs of logical grooves, and four lead to groove symmetric distribution, lead to the groove tip and be the round platform shape, and the round platform top is led to the groove by two cylinders of size and is connected and form by last to down.
6. A controlled damping, double-acting, barrel shock absorber piston as claimed in claim 1, wherein: and a gasket II (5) is additionally arranged between the nut II (4) and the outer sleeve (7), and the nut II (4) is welded on the middle sleeve (6) after the position is determined.
7. A controlled damping, double-acting, barrel shock absorber piston as claimed in claim 1, wherein: a gasket I (3) is additionally arranged between the nut I (2) and the middle sleeve (6), and the nut I (2) is welded on the inner column (11) after the position is determined.
8. A controlled damping, double-acting, barrel shock absorber piston as claimed in claim 1, wherein: when the middle control rod 1(14) and the outer control rod (13) rotate, the positions of the lower cover plate (16) and the upper cover plate (15) relative to the damping valve body (12) can be respectively controlled, the flow area of damping oil liquid is controlled, and the damping force of the shock absorber is further controlled.
9. A controlled damping, double-acting, barrel shock absorber piston as claimed in claim 1, wherein: the hexagonal column of the middle sleeve (6) and the long cylindrical pipe form a shoulder, and the damping valve body (12) is axially positioned through the shoulder of the middle sleeve (6) and the nut III (10).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110409599.4A CN112984027A (en) | 2021-04-16 | 2021-04-16 | Damping-controllable bidirectional-acting cylinder type shock absorber piston |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110409599.4A CN112984027A (en) | 2021-04-16 | 2021-04-16 | Damping-controllable bidirectional-acting cylinder type shock absorber piston |
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| CN112984027A true CN112984027A (en) | 2021-06-18 |
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| CN202110409599.4A Pending CN112984027A (en) | 2021-04-16 | 2021-04-16 | Damping-controllable bidirectional-acting cylinder type shock absorber piston |
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Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1447229A (en) * | 1972-10-26 | 1976-08-25 | Itt | Shock absorber |
| KR19980023179U (en) * | 1996-10-31 | 1998-07-25 | 박문규 | Shock Absorber Shock Absorber of Vehicle Suspension |
| EP1167810A2 (en) * | 2000-06-23 | 2002-01-02 | Tenneco Automotive Inc. | Shock absorber having ported plate low speed tunability |
| JP2010038348A (en) * | 2008-08-08 | 2010-02-18 | Hitachi Automotive Systems Ltd | Damping force adjustable shock absorber |
| CN102954142A (en) * | 2011-08-25 | 2013-03-06 | 长春孔辉汽车科技有限公司 | Bidirectional hydraulic limit damper |
| CN108790669A (en) * | 2018-06-29 | 2018-11-13 | 浙江小豆电气科技有限公司 | The anti-steering side turn over suspension frame structure of electric vehicle |
| CN111306239A (en) * | 2020-04-06 | 2020-06-19 | 马世强 | Variable stroke damping curve shock absorber |
| CN215257573U (en) * | 2021-04-16 | 2021-12-21 | 吉林大学 | Damping-controllable cylinder type shock absorber piston |
-
2021
- 2021-04-16 CN CN202110409599.4A patent/CN112984027A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB1447229A (en) * | 1972-10-26 | 1976-08-25 | Itt | Shock absorber |
| KR19980023179U (en) * | 1996-10-31 | 1998-07-25 | 박문규 | Shock Absorber Shock Absorber of Vehicle Suspension |
| EP1167810A2 (en) * | 2000-06-23 | 2002-01-02 | Tenneco Automotive Inc. | Shock absorber having ported plate low speed tunability |
| JP2010038348A (en) * | 2008-08-08 | 2010-02-18 | Hitachi Automotive Systems Ltd | Damping force adjustable shock absorber |
| CN102954142A (en) * | 2011-08-25 | 2013-03-06 | 长春孔辉汽车科技有限公司 | Bidirectional hydraulic limit damper |
| CN108790669A (en) * | 2018-06-29 | 2018-11-13 | 浙江小豆电气科技有限公司 | The anti-steering side turn over suspension frame structure of electric vehicle |
| CN111306239A (en) * | 2020-04-06 | 2020-06-19 | 马世强 | Variable stroke damping curve shock absorber |
| CN215257573U (en) * | 2021-04-16 | 2021-12-21 | 吉林大学 | Damping-controllable cylinder type shock absorber piston |
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