CN205371148U - Double -acting cylinder with cushioning effect - Google Patents
Double -acting cylinder with cushioning effect Download PDFInfo
- Publication number
- CN205371148U CN205371148U CN201620188642.3U CN201620188642U CN205371148U CN 205371148 U CN205371148 U CN 205371148U CN 201620188642 U CN201620188642 U CN 201620188642U CN 205371148 U CN205371148 U CN 205371148U
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- CN
- China
- Prior art keywords
- piston
- cylinder body
- frustum
- cylinder
- cone section
- Prior art date
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- Expired - Fee Related
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Abstract
The utility model relates to a double -acting cylinder with cushioning effect, the piston that slides and set up in cylinder body and cylinder body, be provided with the end cover that the piston rod stretches out cylinder body one end on the terminal surface of piston, the piston is cut apart the cylinder body and is become to have pole cavity and no pole cavity, have be provided with respectively on the cylinder body that pole cavity and nos pole cavity belonged to first, the second hydraulic fluid port, the both ends of piston are connected with frustum of a cone section, the diameter of frustum of a cone section coincide until the diameter with the piston to middle grow from the both ends of piston, the outer wall of the frustum of a cone section at piston both ends is respectively with first, the second hydraulic fluid port is close to or keeps away from. The piston sets up frustum of a cone section at the both ends of piston when being close to the cylinder body both ends, the outer wall of the frustum of a cone section at piston both ends with first, when the second hydraulic fluid port is close to, close hydraulic fluid port first, the second gradually, outer wall and first, the second hydraulic fluid port of the frustum of a cone section at piston both ends constitute the choke valve, slow down the oil return speed of hydro -cylinder cylinder body, the piston reduces the translation rate of piston when being close to the cylinder body both ends to reduce piston or the impact force of piston rod to cylinder cap and cylinder bottom.
Description
Technical field
This utility model relates to oil cylinder technical field, is specifically related to a kind of two-way cylinder with cushioning effect.
Background technology
Hydraulic jack is extremely wide as conventional frame for movement application, hydraulic jack is divided into the type such as one-way cylinder and two-way cylinder according to the external part of piston rod, wherein two-way cylinder includes cylinder body, slide in cylinder body and be provided with piston, piston is provided with piston rod, one end of piston rod is stretched out outside cylinder body, cylinder body is divided into rod chamber and rodless cavity by piston, the cylinder body at rod chamber and rodless cavity place is respectively provided with hydraulic fluid port, hydraulic fluid port connects with extraneous hydraulic oil, thus controlling the lifting of two-way cylinder, when running to limit superior and limit inferior at oil cylinder, the piston of oil cylinder or piston rod can produce to impact with cylinder bottom and cylinder cap.Huge impact can increase the load of oil cylinder, produces vibration and abnormal sound, reduces the service life of oil cylinder and the stability of hydraulic system simultaneously.
Utility model content
The purpose of this utility model is: provide a kind of two-way cylinder with cushioning effect, when running to limit superior and limit inferior at oil cylinder, reduces piston or the piston rod impulsive force to cylinder bottom and cylinder cap, it is ensured that the normal operation of whole hydraulic system.
For achieving the above object, the technical solution adopted in the utility model is: a kind of two-way cylinder with cushioning effect, including the piston arranged that slides in cylinder body and cylinder body, the end face of described piston is provided with piston rod and stretches out the end cap of cylinder body one end, cylinder body is divided into rod chamber room and rodless cavity room by piston, the cylinder body at rod chamber room and place, rodless cavity room is respectively arranged with first, second hydraulic fluid port, the two ends of described piston are connected to frustum of a cone section, the diameter of described frustum of a cone section becomes big until coincideing with the diameter of piston from the two ends of piston to centre, the outer wall of the frustum of a cone section at piston two ends is respectively with first, second hydraulic fluid port closer or far from.
Compared with prior art, the technique effect that this utility model possesses is: piston is when near cylinder body two ends, at the two ends of piston, frustum of a cone section is set, the outer wall of the frustum of a cone section at piston two ends and first, second hydraulic fluid port near time, progressively close off the hydraulic fluid port of first, second, the outer wall of the frustum of a cone section at piston two ends and first, second hydraulic fluid port constitute choke valve, slow down the oil return speed of cylinder block, piston is when near cylinder body two ends, reduce the translational speed of piston, thus reducing piston or the piston rod impulsive force to cylinder cap and cylinder bottom.
Accompanying drawing explanation
Fig. 1 is the structural representation of the end cap at the contiguous place, rod chamber room of piston of two-way cylinder；
Fig. 2 be two-way cylinder piston and place, rod chamber room end cap against time structural representation；
Fig. 3 is the structural representation of the end cap at the contiguous place, rodless cavity room of piston of two-way cylinder；
Fig. 4 be two-way cylinder piston and place, rodless cavity room end cap against time structural representation.
Detailed description of the invention
In conjunction with Fig. 1 to Fig. 4, the utility model is further described:
A kind of two-way cylinder with cushioning effect, including the piston 20 arranged that slides in cylinder body 10 and cylinder body 10, the end face of described piston 20 is provided with piston rod 21 and stretches out the end cap of cylinder body 10 one end, cylinder body is divided into rod chamber room and rodless cavity room by piston 20, the cylinder body 10 at rod chamber room and place, rodless cavity room is respectively arranged with first, second hydraulic fluid port 11, 12, the two ends of described piston 20 are connected to frustum of a cone section 22, the diameter of described frustum of a cone section 22 becomes big until coincideing with the diameter of piston 20 from the two ends of piston 20 to centre, the outer wall of the frustum of a cone section 22 at piston 20 two ends is respectively with first, second hydraulic fluid port 11, 12 closer or far from.
Piston 20 is when near cylinder body 10 two ends, at the two ends of piston 20, frustum of a cone section 22 is set, the outer wall of the frustum of a cone section 22 at piston 20 two ends and first, second hydraulic fluid port 11,12 near time, progressively close off the hydraulic fluid port 11,12 of first, second, the outer wall of the frustum of a cone section 22 at piston 20 two ends and first, second hydraulic fluid port 11,12 constitute choke valve, slow down the oil return speed of cylinder block 10, piston 20 is when near cylinder body 10 two ends, reduce the translational speed of piston 20, thus reducing piston 20 or the piston rod 21 impulsive force to cylinder cap and cylinder bottom.
Preferably, described first, second hydraulic fluid port 11,12 is respectively adjacent to the two ends port arrangements of cylinder body 10, when the two ends of described piston 20 are contiguous with the two ends of cylinder body 10, the outer wall of the frustum of a cone section 22 at piston 20 two ends is close with first, second hydraulic fluid port 11,12 respectively, the two ends of described piston 20 and the two ends of cylinder body 10 against time, the outer wall of piston 20 and the laminating closing of first, second hydraulic fluid port 11,12.
In conjunction with shown in Fig. 1 and Fig. 3, the angle a between outer wall and cylinder body 10 inwall of the frustum of a cone section 22 at described piston 20 two ends is at 3 °～8 °.Preferably, the angle a between outer wall and cylinder body 10 inwall of the frustum of a cone section 22 at described piston 20 two ends is 5 °.
Claims (4)
- null1. a two-way cylinder with cushioning effect，Including the piston (20) arranged that slides in cylinder body (10) and cylinder body (10)，The end face of described piston (20) is provided with piston rod (21) and stretches out the end cap of cylinder body (10) one end，Cylinder body is divided into rod chamber room and rodless cavity room by piston (20)，The cylinder body (10) at rod chamber room and place, rodless cavity room is respectively arranged with first、Second hydraulic fluid port (11、12)，It is characterized in that: the two ends of described piston (20) are connected to frustum of a cone section (22)，The diameter of described frustum of a cone section (22) becomes big until coincideing with the diameter of piston (20) from the two ends of piston (20) to centre，The outer wall of the frustum of a cone section (22) at piston (20) two ends is respectively with first、Second hydraulic fluid port (11、12) closer or far from.
- 2. the two-way cylinder with cushioning effect according to claim 1, it is characterized in that: described first, second hydraulic fluid port (11, 12) the two ends port arrangements of cylinder body (10) it is respectively adjacent to, when the two ends of described piston (20) are contiguous with the two ends of cylinder body (10), the outer wall of the frustum of a cone section (22) at piston (20) two ends is respectively with first, second hydraulic fluid port (11, 12) close, the two ends of the two ends of described piston (20) and cylinder body (10) against time, the outer wall and first of piston (20), second hydraulic fluid port (11, 12) laminating is closed.
- 3. the two-way cylinder with cushioning effect according to claim 1 and 2, it is characterised in that: the angle between outer wall and cylinder body (10) inwall of the frustum of a cone section (22) at described piston (20) two ends is at 3 °～8 °.
- 4. the two-way cylinder with cushioning effect according to claim 3, it is characterised in that: the angle between outer wall and cylinder body (10) inwall of the frustum of a cone section (22) at described piston (20) two ends is 5 °.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620188642.3U CN205371148U (en) | 2016-03-11 | 2016-03-11 | Double -acting cylinder with cushioning effect |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620188642.3U CN205371148U (en) | 2016-03-11 | 2016-03-11 | Double -acting cylinder with cushioning effect |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205371148U true CN205371148U (en) | 2016-07-06 |
Family
ID=56265466
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620188642.3U Expired - Fee Related CN205371148U (en) | 2016-03-11 | 2016-03-11 | Double -acting cylinder with cushioning effect |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205371148U (en) |
-
2016
- 2016-03-11 CN CN201620188642.3U patent/CN205371148U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| PE01 | Entry into force of the registration of the contract for pledge of patent right |
Denomination of utility model: Double -acting cylinder with cushioning effect Effective date of registration: 20170815 Granted publication date: 20160706 Pledgee: Hefei high tech Company limited by guarantee Pledgor: Hefei Liheng Hydraulic System Co., Ltd. Registration number: 2017340000153 |
|
| PE01 | Entry into force of the registration of the contract for pledge of patent right | ||
| PC01 | Cancellation of the registration of the contract for pledge of patent right |
Date of cancellation: 20180821 Granted publication date: 20160706 Pledgee: Hefei high tech Company limited by guarantee Pledgor: Hefei Liheng Hydraulic System Co., Ltd. Registration number: 2017340000153 |
|
| PC01 | Cancellation of the registration of the contract for pledge of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160706 Termination date: 20200311 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |