CN110552986A - damper - Google Patents
damper Download PDFInfo
- Publication number
- CN110552986A CN110552986A CN201910725232.6A CN201910725232A CN110552986A CN 110552986 A CN110552986 A CN 110552986A CN 201910725232 A CN201910725232 A CN 201910725232A CN 110552986 A CN110552986 A CN 110552986A
- Authority
- CN
- China
- Prior art keywords
- piston
- cylinder
- cavity
- connecting rod
- rod
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- 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
-
- 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
- F16F9/3405—Throttling passages in or on piston body, e.g. slots
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Fluid-Damping Devices (AREA)
Abstract
The invention discloses a damper, which comprises a piston cylinder and a connecting rod piston, wherein the piston cylinder is provided with a piston rod; the connecting rod piston comprises a piston and a connecting rod connected with the piston; the piston divides a cavity of the piston cylinder into a first cavity and a second cavity along the pushing direction of the piston, and damping media are filled in the first cavity and the second cavity; wherein, the piston is provided with an orifice, and when the piston is pressed and moved towards the direction of the second chamber, the flow channel of the damping medium in the orifice can be gradually reduced. The damper can reduce the reaction impact force generated by the damper on an object in the buffering and decelerating process, so that the buffering and decelerating process is smooth, the fatigue resistance of the object is delayed after long-term use, and the service life of the object is prolonged by degradation.
Description
Technical Field
The invention relates to mechanical buffering deceleration, in particular to a damper.
Background
A common viscous damper is generally composed of a cylinder, a piston rod, and a damping medium. Damping medium is filled in the two cavities in front of and behind the piston, the piston rod and the piston can slide in the inner cavity of the cylinder body, and the damping medium flows from one cavity to the other cavity through a channel between the piston and the cylinder body in the sliding process of the piston.
The damping coefficient of the existing damper applied to the buffering deceleration occasion is a fixed value, and the damping coefficient can be set to be larger in order to enable the damper to meet the use requirement. When the object impacts the damper at a higher speed to buffer and decelerate, the damper generates a larger reaction impact force on the object, so that the buffering and decelerating process is not smooth, the fatigue resistance of the object is also greatly influenced after long-term use, and the service life of the object is degraded.
How to provide a damper for reduce the buffer in the speed reduction process and to the object produced reaction impact force, make the buffer speed reduction process smooth-going, delay the antifatigue to the object after long-term use, degrade and provide object life, be the technical problem that needs to solve.
Disclosure of Invention
The invention aims to provide a damper, in the process of buffering deceleration, a connecting rod pushes a piston to perform extrusion motion, a flow passage of a damping medium in an orifice is gradually reduced, namely the effective throttling area of the orifice is gradually reduced, so that the damping coefficient of the damper is changed, and the damping force is changed from small to large. When the damper is used for buffering and decelerating, the damping force can be increased from small to large, so that the buffering is smoother, the damper generates smaller reaction impact force on an object in the buffering and decelerating process, the buffering and decelerating process is smoother, the fatigue of the object can be delayed by long-term use, and the service life of the object is prolonged.
In order to achieve the above object, the present invention provides a damper comprising a piston cylinder, a rod piston; the connecting rod piston comprises a piston and a connecting rod connected with the piston; the piston is arranged in the cavity of the piston cylinder, the connecting rod extends to the outside of the cavity of the piston cylinder from the piston, and the piston can reciprocate in the cavity of the piston cylinder under the push-pull action of the connecting rod; the piston divides a cavity of the piston cylinder into a first cavity and a second cavity along the pushing direction of the piston, and damping media are filled in the first cavity and the second cavity; wherein, the piston is provided with an orifice, and when the piston is pressed and moved towards the direction of the second chamber, the flow channel of the damping medium in the orifice can be gradually reduced.
Preferably, a plurality of variable damping coefficient rods are arranged in the cavity of the piston cylinder and positioned at the bottom of the piston cylinder, each variable damping coefficient rod is coaxially sleeved in a corresponding throttling hole, and the cross-sectional area of each variable damping coefficient rod is gradually reduced from the bottom of the piston cylinder to the first chamber along the direction from the second chamber.
Preferably, the orifices are evenly distributed over the piston.
Preferably, the variable damping coefficient rod is tapered.
Preferably, the orifice is cylindrical or conical.
Preferably, the variable damping coefficient stem and the orifice are conical.
Preferably, the piston cylinder includes cylinder body and cylinder cap, be provided with the through-hole on the cylinder cap, the connecting rod cover is located in the through-hole.
Preferably, the outer edges of the cylinder body and the cylinder cover are provided with a plurality of bosses, each boss is correspondingly provided with a bolt hole, and a bolt can penetrate through the bolt holes to connect the cylinder body and the cylinder cover.
Preferably, one end of the variable damping coefficient rod is connected with the bottom of the cylinder body, and the other end of the variable damping coefficient rod is in contact with the cylinder cover.
Preferably, the inner wall of cylinder cap is provided with a plurality of draw-in grooves, and the one end card of variable damping coefficient pole is located in the draw-in groove.
In the above technical scheme, the invention provides a damper, which comprises a piston cylinder and a connecting rod piston; the connecting rod piston comprises a piston and a connecting rod connected with the piston; the piston is arranged in the cavity of the piston cylinder, the connecting rod extends to the outside of the cavity of the piston cylinder from the piston, and the piston can reciprocate in the cavity of the piston cylinder under the push-pull action of the connecting rod; the piston divides a cavity of the piston cylinder into a first cavity and a second cavity along the pushing direction of the piston, and damping media are filled in the first cavity and the second cavity; wherein, the piston is provided with an orifice, and when the piston is pressed and moved towards the direction of the second chamber, the flow channel of the damping medium in the orifice can be gradually reduced. Therefore, in the process of buffering and decelerating, the connecting rod pushes the piston to extrude and move from the first chamber to the second chamber in the cavity of the piston cylinder, the flow channel of the damping medium in the throttling hole is gradually reduced, namely the effective throttling area of the throttling hole is gradually reduced, so that the damping coefficient of the damper is changed, and the damping force is changed from small to large. When the damper is used for buffering and decelerating, the damping force can be increased from small to large, the buffering is smoother, and the damper generates smaller reaction impact force on an object in the buffering and decelerating process, so that the buffering and decelerating process is smoother, the fatigue of the object can be delayed by long-term use, and the service life of the object is prolonged. The invention has simple structure, can solve the technical problem which is not solved all the time through simple change and has obvious beneficial effect. Additional features and advantages of the invention will be set forth in the detailed description which follows.
Drawings
The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention and not to limit the invention. In the drawings:
Fig. 1 is a partial sectional view schematically showing a damper according to a preferred embodiment of the present invention.
Description of the reference numerals
1 piston 2 connecting rod
3 first chamber 4 second chamber
5 orifice 6 variable damping coefficient rod
7 cylinder body and 8 cylinder cover
9 through hole 10 boss
11 bolt hole
Detailed Description
The following detailed description of embodiments of the invention refers to the accompanying drawings. It should be understood that the detailed description and specific examples, while indicating the present invention, are given by way of illustration and explanation only, not limitation.
In the present invention, unless otherwise specified, the directional terms "upper, lower, side, inner, outer" and the like included in the terms merely represent the directions of the terms in a conventional use state or are colloquially understood by those skilled in the art, and should not be construed as limiting the terms.
As shown in FIG. 1, the present invention provides a damper comprising a piston cylinder, a rod piston; the connecting rod piston comprises a piston 1 and a connecting rod 2 connected with the piston 1; the piston 1 is arranged in the cavity of the piston cylinder, the connecting rod 2 extends from the piston 1 to the outside of the cavity of the piston cylinder, and the piston 1 can reciprocate in the cavity of the piston cylinder under the push-pull action of the connecting rod 2; the piston 1 divides the cavity of the piston cylinder into a first chamber 3 and a second chamber 4 along the pushing direction of the piston 1, and damping media are filled in the first chamber 3 and the second chamber 4; wherein, the piston 1 is provided with an orifice 5, and the flow passage of the damping medium in the orifice 5 can be gradually reduced when the piston 1 is pressed towards the second chamber 4. In the process of buffering and decelerating, the connecting rod 2 pushes the piston 1 to extrude in the cavity of the piston cylinder from the first chamber 3 to the second chamber 4, the flow channel of the damping medium in the throttling hole 5 is gradually reduced, namely the effective throttling area of the throttling hole is gradually reduced, so that the damping coefficient of the damper is changed, and the damping force is changed from small to large. When the damper is used for buffering and decelerating, the damping force can be increased from small to large, the buffering is smoother, and the damper generates smaller reaction impact force on an object in the buffering and decelerating process, so that the buffering and decelerating process is smoother, the fatigue of the object can be delayed by long-term use, and the service life of the object is prolonged. The invention has simple structure, can solve the technical problem which is not solved all the time through simple change and has obvious beneficial effect.
In which, how to arrange the structure can make the flow passage of the damping medium in the throttle 5 become gradually smaller when the piston 1 is pressed towards the second chamber 4, there are many options, for example, the aperture of the throttle 5 is gradually reduced during the pressing process. In a preferred embodiment of the invention, in order to make the flow path of the damping medium in the throttle bore 5 gradually smaller and more controllable when the piston 1 is pressed in the direction of the second chamber 4, a plurality of variable damping coefficient rods 6 are arranged in the cavity of the piston cylinder and at the bottom of the piston cylinder, each variable damping coefficient rod 6 is coaxially sleeved in a corresponding throttle bore 5, wherein the cross-sectional area of the variable damping coefficient rods 6 is gradually reduced from the bottom of the piston cylinder in the direction of the second chamber 4 towards the first chamber 3. Thus, when the piston 1 performs the pressing movement towards the second chamber 4, the sectional area of the variable damping coefficient rod 6 is gradually increased, and the aperture of the throttle hole 5 is constant, so that the flow passage of the damping medium in the throttle hole 5 is gradually reduced.
In a preferred embodiment of the invention, the throttle bores 5 are distributed uniformly over the piston 1. Like this for corresponding variable damping coefficient pole 6 also can evenly distributed, thereby when making damping medium flow out in orifice 5, the atress is more even, thereby is more even to the reaction force of object.
The variable damping coefficient rods 6 can be cone-shaped rod pieces, each variable damping coefficient rod and the throttling hole of the piston with the rod are installed in a coaxial penetrating mode, the large end face of each variable damping coefficient rod 6 is installed on the bottom face of the piston cylinder, and the small end face of each variable damping coefficient rod is installed at the end, corresponding to the cover plate, of the piston cylinder.
In a preferred embodiment of the present invention, the variable damping coefficient rod 6 is tapered.
In a preferred embodiment of the invention, the throttle bore 5 is cylindrical or conical.
In a preferred embodiment of the present invention, the variable damping coefficient rod 6 and the orifice 5 are both conical. Thus, when the piston 1 moves to the bottom of the piston cylinder, the variable damping coefficient rod 6 is just sleeved in the throttling hole 5, so that the acting force of the damping medium on the piston is more uniform.
The arrangement mode of the piston cylinder is various, in a preferred embodiment of the invention, the piston cylinder comprises a cylinder body 7 and a cylinder cover 8, a through hole 9 is arranged on the cylinder cover 8, and the connecting rod 2 is sleeved in the through hole 9.
In a preferred embodiment of the present invention, a plurality of bosses 10 are provided on the outer edges of the cylinder block 7 and the cylinder head 8, and each boss 10 is provided with a corresponding bolt hole 11, and a bolt can be inserted through the bolt hole 11 to connect the cylinder block 7 and the cylinder head 8.
In a preferred embodiment of the present invention, one end of the variable damping coefficient rod 6 is connected to the bottom of the cylinder block 7, and the other end is in contact with the cylinder head 8.
In a preferred embodiment of the present invention, the inner wall of the cylinder cover 8 is provided with a plurality of slots, and one end of the variable damping coefficient rod 6 is clamped in the slots. In this way, the structure is made more stable.
In the technical scheme, the piston is arranged in the piston cylinder, the piston rod of the piston with the rod penetrates through a central hole of a cover plate of the piston cylinder, and the cover plate is tightly and hermetically connected with the piston cylinder, so that the piston cylinder forms a closed cavity. The piston cylinder has a guiding function on the movement of the piston with the rod, and the piston with the rod can freely move along the inner wall of the piston cylinder. Meanwhile, the matching of the piston with the rod and the piston cylinder has a certain sealing effect. This is a conventional arrangement of a conventional piston damper and will not be described in detail here.
Meanwhile, the length of one end of the connecting rod 2 with the rod piston extending to the cover plate is longer than the stroke of the rod piston, and one end of the connecting rod 2 is a force bearing end of the deceleration buffer.
The preferred embodiments of the present invention have been described in detail with reference to the accompanying drawings, however, the present invention is not limited to the specific details of the above embodiments, and various simple modifications can be made to the technical solution of the present invention within the technical idea of the present invention, and these simple modifications are within the protective scope of the present invention.
It should be noted that the various technical features described in the above embodiments can be combined in any suitable manner without contradiction, and the invention is not described in any way for the possible combinations in order to avoid unnecessary repetition.
In addition, any combination of the various embodiments of the present invention is also possible, and the same should be considered as the disclosure of the present invention as long as it does not depart from the spirit of the present invention.
Claims (10)
1. A damper is characterized by comprising a piston cylinder and a connecting rod piston; the connecting rod piston comprises a piston (1) and a connecting rod (2) connected with the piston (1); the piston (1) is arranged inside the cavity of the piston cylinder, the connecting rod (2) extends from the piston (1) to the outside of the cavity of the piston cylinder, and the piston (1) can reciprocate in the cavity of the piston cylinder under the push-pull action of the connecting rod (2);
The piston (1) divides a cavity of the piston cylinder into a first cavity (3) and a second cavity (4) along the pushing direction of the piston (1), and damping media are filled in the first cavity (3) and the second cavity (4); wherein, an orifice (5) is arranged on the piston (1), and when the piston (1) is pressed and moved towards the direction of the second chamber (4), the flow passage of the damping medium in the orifice (5) can be gradually reduced.
2. The damper according to claim 1, characterized in that a plurality of variable damping coefficient rods (6) are arranged in the cavity of the piston cylinder and at the bottom of the piston cylinder, each variable damping coefficient rod (6) is coaxially sleeved in a corresponding orifice (5), wherein the cross-sectional area of the variable damping coefficient rods (6) is gradually reduced from the bottom of the piston cylinder along the direction from the second chamber (4) to the first chamber (3).
3. A damper according to claim 2, characterized in that the throttle holes (5) are evenly distributed over the piston (1).
4. A damper according to claim 2, characterized in that the variable damping coefficient rod (6) is conical.
5. A damper according to claim 4, characterized in that the throttle hole (5) is cylindrical or conical.
6. A damper according to claim 4, characterized in that the variable damping coefficient rod (6) and the orifice (5) are conical.
7. The damper according to claims 2-6, characterized in that the piston cylinder comprises a cylinder body (7) and a cylinder cover (8), a through hole (9) is arranged on the cylinder cover (8), and the connecting rod (2) is sleeved in the through hole (9).
8. The damper according to claim 7, characterized in that the outer edges of the cylinder block (7) and the cylinder head (8) are provided with a plurality of bosses (10), each boss (10) is correspondingly provided with a bolt hole (11), and a bolt can pass through the bolt hole (11) to connect the cylinder block (7) and the cylinder head (8).
9. A damper according to claim 8, characterized in that the variable damping coefficient rod (6) is connected at one end to the bottom of the cylinder block (7) and at the other end to the cylinder head (8).
10. the damper according to claim 9, characterized in that the inner wall of the cylinder cover (8) is provided with a plurality of clamping grooves, and one end of the variable damping coefficient rod (6) is clamped in the clamping grooves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910725232.6A CN110552986A (en) | 2019-08-07 | 2019-08-07 | damper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910725232.6A CN110552986A (en) | 2019-08-07 | 2019-08-07 | damper |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110552986A true CN110552986A (en) | 2019-12-10 |
Family
ID=68737030
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910725232.6A Pending CN110552986A (en) | 2019-08-07 | 2019-08-07 | damper |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110552986A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111520433A (en) * | 2020-03-31 | 2020-08-11 | 株洲时代新材料科技股份有限公司 | Double-piston viscous damper |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1445414A (en) * | 1920-12-13 | 1923-02-13 | William J Schuessler | Shock absorber |
| DE1817807A1 (en) * | 1968-11-25 | 1972-02-17 | Teves Gmbh Alfred | Pushing device for rail vehicles |
| CN105090333A (en) * | 2015-07-18 | 2015-11-25 | 常州大学 | Single-rod throttling-hole-changing self-adaptive magnetorheological damper |
| CN105156570A (en) * | 2015-07-20 | 2015-12-16 | 常州大学 | Double-rod variable-orifice passive single-control variable-damping magnetorheological damper |
| CN105179561A (en) * | 2015-09-28 | 2015-12-23 | 李超 | Single-piston stroke inductive type resistance change damping structure |
-
2019
- 2019-08-07 CN CN201910725232.6A patent/CN110552986A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1445414A (en) * | 1920-12-13 | 1923-02-13 | William J Schuessler | Shock absorber |
| DE1817807A1 (en) * | 1968-11-25 | 1972-02-17 | Teves Gmbh Alfred | Pushing device for rail vehicles |
| CN105090333A (en) * | 2015-07-18 | 2015-11-25 | 常州大学 | Single-rod throttling-hole-changing self-adaptive magnetorheological damper |
| CN105156570A (en) * | 2015-07-20 | 2015-12-16 | 常州大学 | Double-rod variable-orifice passive single-control variable-damping magnetorheological damper |
| CN105179561A (en) * | 2015-09-28 | 2015-12-23 | 李超 | Single-piston stroke inductive type resistance change damping structure |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111520433A (en) * | 2020-03-31 | 2020-08-11 | 株洲时代新材料科技股份有限公司 | Double-piston viscous damper |
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| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20191210 |