CN106958619B - Automatic adjusting shock absorber - Google Patents
Automatic adjusting shock absorber Download PDFInfo
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- CN106958619B CN106958619B CN201710293816.1A CN201710293816A CN106958619B CN 106958619 B CN106958619 B CN 106958619B CN 201710293816 A CN201710293816 A CN 201710293816A CN 106958619 B CN106958619 B CN 106958619B
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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
- F16F9/19—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 with a single cylinder and of single-tube type
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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
- F16F13/00—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs
- F16F13/005—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a wound spring and a damper, e.g. a friction damper
- F16F13/007—Units comprising springs of the non-fluid type as well as vibration-dampers, shock-absorbers, or fluid springs comprising both a wound spring and a damper, e.g. a friction damper the damper being a fluid damper
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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
- F16F9/3235—Constructional features of cylinders
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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 provides an automatic adjusting shock absorber, and belongs to the technical field of automobiles. The vibration damper solves the technical problems that the prior vibration damper cannot adjust the resistance of the main piston according to the vibration amplitude and the like. The automatic adjusting shock absorber comprises a main piston, a piston rod, an upward check valve, a downward check valve and a hydraulic oil cylinder, wherein a working oil cavity is formed in the hydraulic oil cylinder, the main piston is located in the working oil cavity, the lower end of the piston rod is fixedly connected with the main piston, a plurality of lower damping oil holes are formed in the side wall of the lower part of the hydraulic oil cylinder, the lower damping oil holes are distributed along the axial direction of the hydraulic oil cylinder, the upward check valve can prevent from blocking the lower damping oil holes, a plurality of upper damping oil holes are formed in the side wall of the upper part of the hydraulic oil cylinder, the upper damping oil holes are distributed along the axial direction of the hydraulic oil cylinder, and the downward check valve can block all the upper damping oil holes. The shock absorber can adjust the resistance of the piston when moving up and down according to the amplitude of vibration, and has good vibration reduction effect.
Description
Technical Field
The invention belongs to the technical field of automobiles, and relates to an automatic adjusting shock absorber.
Background
The hydraulic damper uses hydraulic oil as working medium and utilizes the viscous damping action of oil to form a certain pressure difference in front and back of throttle orifice or valve to change the kinetic energy of vibration into the pressure energy of liquid to damp and absorb vibration, so that at present, the hydraulic damper has been widely used, such as landing gear of airplane, various automobiles, motorcycles, ships and other equipment needing damping, the hydraulic damper has the advantages of (1) wide damping force range and variable along with the vibration speed, and the rigidity can be very large because the oil is almost incompressible, so the damping force is large, thus belonging to powerful damper; (2) good damping characteristic and convenient structure realization; various forms of fixed chokes, variable chokes and valve ports can generate different forms of resistance characteristics, and the performance is stable; (3) The hydraulic shock absorber can be filled with nitrogen to form a hydro-pneumatic spring, and can be used in parallel with a metal spiral spring to form an independent suspension, so that the comfort of a vehicle in running is improved; and (4) the maintenance is convenient, and the manufacturing cost is low.
The patent document in China with the application number 201520324770.1 discloses a self-adjusting shock absorber of an automobile, the shock absorber comprises a piston rod, a main piston and a hydraulic oil cylinder, a working oil cavity for containing oil is arranged in the hydraulic oil cylinder, the main piston is positioned in the working oil cavity, the lower end of the piston rod is fixedly connected with the main piston, the upper end of the piston rod is positioned outside the hydraulic oil cylinder.
The above-mentioned shock absorber has a disadvantage in that it cannot adjust the magnitude of resistance applied to the main piston according to the amplitude of vibration, and thus the shock absorbing effect is limited.
Disclosure of Invention
The invention aims at the problems existing in the prior art, and provides an automatic adjusting shock absorber, which aims at solving the technical problems that: how to adjust the resistance of the piston according to the vibration amplitude of the piston, and improve the vibration reduction effect of the vibration absorber.
The aim of the invention can be achieved by the following technical scheme:
the utility model provides an automatically regulated shock absorber, the shock absorber includes master piston, piston rod, goes up check valve, down check valve and hydraulic cylinder, have the working oil chamber that is used for holding fluid in the hydraulic cylinder, the master piston is located the working oil intracavity, the lower extreme and the master piston of piston rod link firmly, its characterized in that, offer a plurality of lower damping oilholes that all are linked together with the working oil chamber on the lateral wall of hydraulic cylinder lower part, lower damping oilhole distributes along the axial of hydraulic cylinder, upward check valve can prevent to block up and have lower damping oilhole, offer a plurality of last damping oilholes that all are linked together with the working oil chamber on the lateral wall of hydraulic cylinder upper portion, go up damping oilhole and distribute along the axial of hydraulic cylinder, down check valve can block up all last damping oilholes.
The working principle of the invention is as follows: the automatic adjusting shock absorber comprises a main piston, a piston rod and a hydraulic oil cylinder, wherein the piston rod is fixed on the main piston, a working oil cavity of the hydraulic oil cylinder is divided into an upper oil cavity and a lower oil cavity by the main piston, when the vibration amplitude is smaller, oil in the lower oil cavity can flow into the upper oil cavity through any lower damping oil hole, and oil in the upper oil cavity can also flow into the lower oil cavity through any upper damping oil hole; when the vibration amplitude is larger, in the process of downward movement of the piston (oil in the lower oil cavity cannot flow into the lower oil cavity through the upper damping oil hole under the action of the downward one-way valve), the piston can gradually block the lower damping oil hole distributed along the axial direction of the hydraulic oil cylinder, and the oil in the lower oil cavity can only flow out of the remaining lower damping oil hole which is not blocked and then flows into the upper oil cavity; in the process of upward movement of the piston (under the action of the upward one-way valve, oil in the upper oil cavity cannot flow into the lower oil cavity through the lower damping oil hole), the piston can gradually block the upper damping oil holes distributed along the axial direction of the hydraulic oil cylinder, oil in the upper oil cavity can only flow out of the remaining unblocked upper damping holes and then flow into the lower oil cavity, and as the upper damping oil holes are distributed along the axial direction of the hydraulic oil cylinder, the flow quantity of the upper oil cavity is gradually reduced in the process of upward movement of the piston, the resistance of oil in the upper oil cavity is gradually increased, the resistance of upward movement of the main piston is gradually improved, and the vibration reduction effect is well improved. Therefore, the shock absorber can adjust the resistance force applied to the piston when the piston moves up and down according to the vibration amplitude, namely, the larger the vibration amplitude is, the larger the resistance force applied to the piston is, and the shock absorber has good shock absorption effect.
In the above-mentioned automatic adjusting damper, a first through hole communicating with the working oil chamber is formed in a side wall of an upper portion of the hydraulic cylinder, each lower damping oil hole is communicated with the first through hole, a second through hole communicating with the working oil chamber is formed in a side wall of a lower portion of the hydraulic cylinder, and each upper damping oil hole is communicated with the second through hole. In the structure, oil flowing out of all the lower damping oil holes can only flow into the upper oil cavity through the first through hole, so that the first through hole further limits the flow of the lower oil cavity, increases the resistance of the oil in the lower oil cavity to flow out, further gradually improves the resistance of the main piston to move downwards, and further improves the vibration reduction effect; similarly, the oil flowing out of all the upper damping oil holes can only flow into the lower oil cavity through the second through hole, so that the second through hole further limits the flow of the upper oil cavity, increases the resistance of the oil in the upper oil cavity to flow out, further gradually improves the resistance of the main piston to move upwards, and further improves the vibration reduction effect.
In the above-mentioned automatic adjusting damper, the lower damping oil holes are all circular, the lower damping oil holes are arranged from top to bottom, and the aperture diameter of each lower damping oil hole is gradually reduced. In this structure, the aperture that is located the lower damping oilhole of top is biggest, and when this lower damping oilhole was plugged up to the main piston that moves down, can reduce the circulation of lower oil pocket rapidly, increases the resistance that the oil in the lower oil pocket flowed out rapidly, and then improves the resistance that main piston moved down rapidly, realizes the damping function more quick.
In the above-mentioned automatic adjusting damper, the first through hole is circular, and the aperture of the first through hole is smaller than the aperture of any one of the lower damping oil holes. In this structure, even if the oil in the lower oil pocket flows out from the minimum lower damping oilhole, through-hole one also can restrict the circulation of lower oil pocket, increases the resistance that the oil in the lower oil pocket flows out, and then improves the resistance that the main piston moved downwards, further improves the damping effect.
In the automatic adjusting shock absorber, the hydraulic oil cylinder is cylindrical, the axes of all the lower damping oil holes are perpendicular to the axis of the hydraulic oil cylinder, and the movement direction of the main piston is consistent with the axial direction of the hydraulic oil cylinder. The structure enables the main piston to gradually reduce the flow quantity of each lower damping oil hole in the downward moving process, gradually increase the resistance of oil flowing out of the lower oil cavity, further gradually improve the downward moving resistance of the main piston and improve the vibration reduction effect.
In the automatic adjusting shock absorber, the lower damping oil holes are uniformly distributed along the axial direction of the hydraulic oil cylinder. The structure enables the main piston to gradually reduce the flow of the lower oil cavity and gradually increase the resistance of oil flowing out of the lower oil cavity in the process of downwards moving the main piston by the same distance, thereby gradually improving the resistance of downwards moving the main piston and improving the vibration reduction effect.
In the above-mentioned automatic adjusting damper, the upper damping oil holes are all circular, the upper damping oil holes are arranged from bottom to top, and the aperture of each upper damping oil hole is gradually reduced. In this structure, the aperture that is located the upper damping oilhole of below is biggest, and when this upper damping oilhole was plugged up to the main piston that upwards moves, can reduce the circulation of upper oil pocket rapidly, increases the resistance that the oil in the upper oil pocket flowed out rapidly, and then improves the resistance that the main piston upwards moved rapidly, realizes the damping function more quick.
In the automatic adjusting shock absorber, the second through hole is circular, and the aperture of the second through hole is smaller than the aperture of any upper damping oil hole. In the structure, even if the oil in the upper oil cavity only flows out from the smallest upper damping oil hole, the through hole II can limit the flow quantity of the upper oil cavity, so that the resistance of the oil in the upper oil cavity to flow out is increased, the resistance of the main piston to move upwards is further improved, and the vibration reduction effect is further improved.
In the automatic adjusting shock absorber, the upper damping oil holes are uniformly distributed along the axial direction of the hydraulic oil cylinder. The structure enables the main piston to gradually reduce the flow of the upper oil cavity and gradually increase the resistance of the oil in the upper oil cavity in the process of moving upwards by the same distance, thereby gradually improving the resistance of the main piston for moving upwards and improving the vibration reduction effect.
In the automatic adjusting shock absorber, the baffle is fixed at the upper end of the piston rod, the damping spring is sleeved on the piston rod, the damping spring is located between the baffle and the hydraulic cylinder, and two ends of the damping spring are fixedly connected with the baffle and the hydraulic cylinder respectively. In the process of downward movement of the main piston, when the vibration reduction spring is stressed in a compressed state, the resistance of downward movement of the main piston can be increased, and the vibration reduction effect is further improved; in the process of upward movement of the main piston, when the vibration reduction spring is stressed in a stretching state, the resistance of upward movement of the main piston can be increased, and the vibration reduction effect is further improved.
Compared with the prior art, the invention has the following advantages:
1. the shock absorber can adjust the resistance of the piston when moving up and down according to the vibration amplitude, namely, the larger the vibration amplitude is, the larger the resistance of the piston is, so that a good shock absorption effect is achieved.
2. In this bumper shock absorber, the aperture that is located the lower damping oilhole of top is biggest, and when this lower damping oilhole was plugged up to the main piston that moves down, can reduce the circulation of lower oil pocket rapidly, increases the resistance that the oil in the lower oil pocket flowed out rapidly, and then improves the resistance that main piston moved down rapidly, realizes the damping function more quick.
Drawings
Fig. 1 is a schematic diagram of the structure of the self-adjusting damper.
Fig. 2 is an enlarged view of a portion a in fig. 1.
Fig. 3 is an enlarged view of a portion B in fig. 1.
In the figure, 1a main piston; 1a piston rod; 2, a hydraulic oil cylinder; 2a working oil chamber; 2a1 is provided with an oil cavity; 2a2 lower oil chamber; 3, a lower damping oil hole; 4, an uplink one-way valve; 5, a damping oil hole is formed in the upper part; 6, a downlink one-way valve; 7, a first through hole is formed; 8, a second through hole; 9 baffle plates; and 10, damping springs.
Detailed Description
The following are specific embodiments of the present invention and the technical solutions of the present invention will be further described with reference to the accompanying drawings, but the present invention is not limited to these embodiments.
As shown in fig. 1, the automatic adjusting shock absorber comprises a main piston 1, a piston rod 1a and a hydraulic cylinder 2, wherein a working oil cavity 2a for containing oil is arranged in the hydraulic cylinder 2, the main piston 1 is positioned in the working oil cavity 2a, the working oil cavity 2a is divided into an upper oil cavity 2a1 and a lower oil cavity 2a2 by the main piston 1, the lower end of the piston rod 1a is fixedly connected with the main piston 1, the upper end of the piston rod 1a is positioned outside the hydraulic cylinder 2, a plurality of lower damping oil holes 3 which are communicated with the lower oil cavity 2a2 are formed in the side wall of the lower part of the hydraulic cylinder 2, the lower damping oil holes 3 are distributed along the axial direction of the hydraulic cylinder 2, the lower damping oil holes 3 are all communicated with the upper oil cavity 2a1, an upward one-way valve 4 is arranged between the lower damping oil holes 3 and the upper oil cavity 2a1, the upward one-way valve 4 can be blocked, a plurality of upper damping oil holes 5 which are all communicated with the upper oil cavity 2a1 are formed in the side wall of the hydraulic cylinder 2, the upper damping oil holes 5 are distributed along the axial direction of the hydraulic cylinder 2, all the upper damping oil holes 5 are communicated with the lower oil cavities 2a 6, and all the upper damping oil holes 6 can be blocked up and down by the upper damping oil holes 6 are arranged between the upper damping oil holes 2a and the lower damping oil holes 6.
As shown in fig. 1, in this embodiment, a first through hole 7 communicating with a working oil chamber 2a (specifically, an upper oil chamber 2a 1) is formed on a side wall of an upper portion of the hydraulic cylinder 2, each lower damping oil hole 3 is communicated with the first through hole 7, a second through hole 8 communicating with the working oil chamber 2a (specifically, the lower oil chamber 2a 2) is formed on a side wall of a lower portion of the hydraulic cylinder 2, and each upper damping oil hole 5 is communicated with the second through hole 8. In the structure, oil flowing out of all the lower damping oil holes 3 can only flow into the upper oil cavity 2a1 through the first through hole 7, so that the first through hole 7 further limits the flow of the lower oil cavity 2a2, increases the resistance of the oil in the lower oil cavity 2a2 to flow out, further gradually improves the downward moving resistance of the main piston 1, and further improves the vibration reduction effect; similarly, the oil flowing out of all the upper damping oil holes 5 can only flow into the lower oil cavity 2a2 through the second through holes 8, so that the second through holes 8 further limit the flow of the upper oil cavity 2a1, the resistance of the oil in the upper oil cavity 2a1 to flow out is increased, the resistance of the main piston 1 to move upwards is gradually increased, and the vibration reduction effect is further improved.
In the embodiment, as shown in fig. 1, a baffle plate 9 is fixed at the upper end of a piston rod 1a, a damping spring 10 is sleeved on the piston rod 1a, the damping spring 10 is positioned between the baffle plate 9 and the hydraulic cylinder 2, and two ends of the damping spring 10 are respectively fixedly connected with the baffle plate 9 and the hydraulic cylinder 2. In the process of downward movement of the main piston 1, when the stress of the damping spring 10 is in a compressed state, the resistance of downward movement of the main piston 1 can be increased, and the damping effect is further improved; in the process of upward movement of the main piston 1, when the stress of the damping spring 10 is in a tensile state, the resistance of upward movement of the main piston 1 can be increased, and the damping effect is further improved.
As shown in fig. 1 or 2, it is preferable that the lower damping oil holes 3 each have a circular shape, the lower damping oil holes 3 are arranged from top to bottom, and the aperture of each lower damping oil hole 3 is gradually reduced. In this structure, the aperture of the lower damping oil hole 3 located at the uppermost is the largest, and when the main piston 1 moving downward blocks the lower damping oil hole 3, the flow of the lower oil chamber 2a2 can be rapidly reduced, the resistance of the oil in the lower oil chamber 2a2 to flow out can be rapidly increased, and further, the resistance of the main piston 1 moving downward can be rapidly increased, and the vibration reduction function can be more rapidly realized.
Preferably, the first through hole 7 is circular, and the aperture of the first through hole 7 is smaller than the aperture of any one of the lower damping oil holes 3. In this structure, even if the oil in the lower oil chamber 2a2 flows out from only the minimum lower damping oil hole 3, the through hole 7 can restrict the flow of the lower oil chamber 2a2, increase the resistance of the oil in the lower oil chamber 2a2 to flow out, and further improve the resistance of the main piston 1 to move downward, further improving the vibration damping effect.
As shown in fig. 1, the hydraulic cylinder 2 is cylindrical, the axes of all the lower damping oil holes 3 are perpendicular to the axis of the hydraulic cylinder 2, and the movement direction of the main piston 1 is consistent with the axial direction of the hydraulic cylinder 2. This structure makes the main piston 1 in the course of moving downward, can gradually reduce the flow of each lower damping oil hole 3, gradually increase the resistance of the oil in the lower oil chamber 2a2 to flow out, and then also gradually improve the resistance of the main piston 1 to move downward, improving the vibration reduction effect.
As shown in fig. 1, the lower damping oil holes 3 are preferably uniformly distributed in the axial direction of the hydraulic cylinder 2. This structure makes the main piston 1 in the same distance of downward movement in-process, can reduce the circulation of lower oil pocket 2a2 gradually, increases the resistance that the oil in lower oil pocket 2a2 flows out gradually, and then also improves the resistance that main piston 1 moved down gradually, improves the damping effect.
As shown in fig. 1 or 3, it is preferable that the upper damping oil holes 5 are all circular, the upper damping oil holes 5 are arranged from bottom to top, and the aperture of each upper damping oil hole 5 is gradually reduced. In this structure, the aperture of the upper damping oil hole 5 located at the lowermost position is the largest, and when the main piston 1 moving upward blocks the upper damping oil hole 5, the flow rate of the upper oil chamber 2a1 can be rapidly reduced, the resistance of the oil in the upper oil chamber 2a1 to flow out can be rapidly increased, and further the resistance of the main piston 1 moving upward can be rapidly increased, so that the vibration reduction function can be more rapidly realized.
Preferably, the second through hole 8 is circular, and the aperture of the second through hole 8 is smaller than the aperture of any upper damping oil hole 5. In this structure, even if the oil in the upper oil chamber 2a1 flows out from only the minimum upper damping oil hole 5, the second through hole 8 can restrict the flow of the upper oil chamber 2a1, increase the resistance of the oil in the upper oil chamber 2a1 to flow out, and further improve the resistance of the main piston 1 to move upward, and further improve the vibration damping effect.
As shown in fig. 1, the upper damping oil holes 5 are preferably uniformly distributed in the axial direction of the hydraulic cylinder 2. This structure makes the main piston 1 in the same distance of upward movement in-process, can reduce the circulation of last oil pocket 2a1 gradually, increases the resistance that the oil in the last oil pocket 2a1 flows out gradually, and then also improves the resistance that main piston 1 upwards moved gradually, improves the damping effect.
The specific embodiments described herein are offered by way of example only to illustrate the spirit of the invention. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions thereof without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.
Claims (6)
1. An automatic adjusting shock absorber comprises a main piston (1), a piston rod (1 a), an upward one-way valve (4), a downward one-way valve (6) and a hydraulic oil cylinder (2), wherein a working oil cavity (2 a) for containing oil is arranged in the hydraulic oil cylinder (2), the main piston (1) is positioned in the working oil cavity (2 a), the lower end of the piston rod (1 a) is fixedly connected with the main piston (1), the automatic adjusting shock absorber is characterized in that a plurality of lower damping oil holes (3) which are communicated with the working oil cavity (2 a) are formed in the side wall of the lower part of the hydraulic oil cylinder (2), the lower damping oil holes (3) are distributed along the axial direction of the hydraulic oil cylinder (2), the upward one-way valve (4) can block the lower damping oil holes (3), a plurality of upper damping oil holes (5) which are communicated with the working oil cavity (2 a) are formed in the side wall of the upper part of the hydraulic oil cylinder (2), the lower damping oil holes (6) can be communicated with one through hole (7) are formed in the side wall of the hydraulic oil cylinder (2), a second through hole (8) communicated with a working oil cavity (2 a) is formed in the side wall of the lower part of the hydraulic oil cylinder (2), each upper damping oil hole (5) is communicated with the second through hole (8), when the main piston (1) is positioned between the upper damping oil hole (5) and the lower damping oil hole (3), the main piston (1) is not shielded on the upper damping oil hole (5), the lower damping oil hole (3), the first through hole (7) and the second through hole (8), the axial position of the first through hole (7) is positioned between the two upper damping oil holes (5) at the lowest part, the axial position of the second through hole (8) is positioned between the two lower damping oil holes (3) at the highest part, a baffle plate (9) is fixed at the upper end of the piston rod (1 a), a damping spring (10) is sleeved on the piston rod (1 a), the damping spring (10) is positioned between the baffle plate (9) and the two ends of the damping spring (10) are respectively fixedly connected with the baffle plate (9) and the hydraulic oil cylinder (2), and when the main piston (1) moves downwards, the damping spring (10) can be in a state of being in which the damping spring (10) can be in an upward compression state when the main piston (1) moves downwards; the lower damping oil holes (3) are all round, the lower damping oil holes (3) are arranged from top to bottom, the aperture of each lower damping oil hole (3) is gradually reduced, the upper damping oil holes (5) are all round, the upper damping oil holes (5) are arranged from bottom to top, and the aperture of each upper damping oil hole (5) is gradually reduced.
2. The self-adjusting damper according to claim 1, wherein the first through hole (7) is circular, and the first through hole (7) has a smaller aperture than any one of the lower damping oil holes (3).
3. The automatic adjusting shock absorber according to claim 1, wherein the hydraulic cylinder (2) is cylindrical, the axes of all the lower damping oil holes (3) are perpendicular to the axis of the hydraulic cylinder (2), and the movement direction of the main piston (1) is consistent with the axial direction of the hydraulic cylinder (2).
4. A self-adjusting shock absorber according to claim 1, 2 or 3, wherein the lower damping oil holes (3) are uniformly distributed along the axial direction of the hydraulic cylinder (2).
5. The self-adjusting damper according to claim 1 or 2, wherein the second through hole (8) is circular, and the aperture of the second through hole (8) is smaller than the aperture of any one of the upper damping oil holes (5).
6. A self-adjusting damper according to claim 1, 2 or 3, wherein the upper damping oil holes (5) are uniformly distributed in the axial direction of the hydraulic cylinder (2).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710293816.1A CN106958619B (en) | 2017-04-28 | 2017-04-28 | Automatic adjusting shock absorber |
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| CN201710293816.1A CN106958619B (en) | 2017-04-28 | 2017-04-28 | Automatic adjusting shock absorber |
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| CN106958619B true CN106958619B (en) | 2023-06-27 |
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| CN108167375A (en) * | 2018-02-23 | 2018-06-15 | 四川大学 | Variable damping vibration isolator and railway roadbed vibrating isolation system |
| CN108533659A (en) * | 2018-05-11 | 2018-09-14 | 南京林业大学 | A kind of mechanical automatic adjustment pressure fluid linking damper |
| CN110822005B (en) * | 2019-11-11 | 2021-07-06 | 合肥工业大学 | Damping self-adaptive adjustment vibration reducer and automobile |
| CN112128289B (en) * | 2020-09-16 | 2022-04-19 | 西安航天远征流体控制股份有限公司 | Hydraulic shock absorber and pulse cleaning angle valve |
| CN113090698B (en) * | 2021-03-26 | 2022-09-13 | 北京三快在线科技有限公司 | Damper, unmanned aerial vehicle foot rest and unmanned aerial vehicle |
| CN113266662B (en) * | 2021-06-23 | 2022-02-22 | 常州大学 | Rigidity mutation type vibration isolator with rigidity increasing along with displacement increase |
| CN113550444A (en) * | 2021-08-26 | 2021-10-26 | 仲恺农业工程学院 | Assembled shear connector |
| CN114404878B (en) * | 2022-03-07 | 2022-07-22 | 浙江飞神车业有限公司 | Automatic protection mechanism on treadmill |
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| JPH06173997A (en) * | 1992-12-08 | 1994-06-21 | Toppan Printing Co Ltd | Damping stopper |
| CN103423364B (en) * | 2013-08-12 | 2015-08-05 | 江苏大学 | The dydraulic shock absorber that a kind of damping is adjustable |
| CN103883661B (en) * | 2014-03-13 | 2016-03-02 | 江苏大学 | A kind of variable vibration damper of sliding valve style damping and method of work coordinating pneumatic spring |
| JP6384726B2 (en) * | 2014-09-04 | 2018-09-05 | 清水建設株式会社 | Vibration reduction device |
| CN204610668U (en) * | 2015-05-19 | 2015-09-02 | 林康 | A kind of self-adjustment shock absorber of automobile |
| CN106151352A (en) * | 2016-08-16 | 2016-11-23 | 铁岭天工阀门科技有限公司 | Multistage adjustable hydraulic damped cylinder |
| CN206770480U (en) * | 2017-04-28 | 2017-12-19 | 台州职业技术学院 | A kind of adjustomatic shock absorber |
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