CN216642620U - Hydraulic cylinder buffer structure - Google Patents
Hydraulic cylinder buffer structure Download PDFInfo
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- CN216642620U CN216642620U CN202121645866.XU CN202121645866U CN216642620U CN 216642620 U CN216642620 U CN 216642620U CN 202121645866 U CN202121645866 U CN 202121645866U CN 216642620 U CN216642620 U CN 216642620U
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Abstract
The utility model discloses a hydraulic cylinder buffer structure which mainly comprises a piston, an O-shaped ring, a piston rod, a cylinder body, a first supporting ring, a first sealing ring, a throttling screw, a second sealing ring, a second supporting ring, a limiting nut, a seam-riding screw, a steel ball, a one-way spring and a one-way screw. This pneumatic cylinder buffer structure, simple structure, novelty, the processing degree of difficulty is low, and assembly efficiency is high, and the buffering effect is adjusted to the accessible change throttle spiral shell, and buffering effect is good.
Description
Technical Field
The utility model relates to the technical field of hydraulic cylinders, in particular to a hydraulic cylinder buffer structure.
Background
The hydraulic cylinder is a hydraulic actuating element which converts hydraulic energy into mechanical energy and makes linear reciprocating motion, has simple structure and reliable work, and is widely applied to hydraulic systems of various machines.
A common hydraulic cylinder of a wood grabbing machine in the market is not provided with a buffer structure, impact can be generated at the initial stage and the final stage of action in the wood grabbing process, a flexible grabbing process is not available, and the grabbing function cannot be effectively realized.
To solve the above problem, we propose a cushion structure of a hydraulic cylinder.
SUMMERY OF THE UTILITY MODEL
The technical problem to be solved by the present invention is to overcome the defects of the prior art, and to solve the technical problem, the present invention provides the following technical solutions:
the utility model relates to a hydraulic cylinder buffer structure which comprises a piston, an O-shaped ring, a piston rod, a cylinder body, a first supporting ring, a first sealing ring, a throttling screw, a second sealing ring, a second supporting ring, a limiting nut, a seam-riding screw, a steel ball, a one-way spring and a one-way screw, wherein the piston is radially provided with a first throttling hole, a throttling groove and a second throttling hole, is provided with the first supporting ring, the first sealing ring, the throttling screw, the second sealing ring and the second supporting ring, a one-way valve hole is axially arranged on the piston, the one-way screw, the one-way spring and the steel ball are arranged in the hole, the one-way valve hole, the one-way screw, the one-way spring and the steel ball form a one-way valve together, the first throttling hole, the throttling groove and the second throttling hole are radially arranged on the piston, a first supporting ring groove, a first sealing groove, a second sealing groove and a second supporting ring groove are arranged on the piston, and the first supporting ring, the first sealing ring, the throttling screw, the second sealing ring and the second sealing ring are arranged on the second supporting ring, The first sealing ring and the second sealing ring form a double-sealing structure, the first sealing ring ensures the initial buffering time and the buffering length, and the second supporting ring always isolates the hydraulic rod cavity and the rodless cavity; the piston is axially provided with a valve seat and a one-way valve hole, a one-way screw, a one-way spring and a steel ball are arranged in the hole, and the valve seat, the one-way valve hole, the one-way screw, the one-way spring and the steel ball form the one-way valve together; the piston is provided with an O-shaped ring groove, an O-shaped ring is arranged to play a role in sealing, and a rod cavity and a rodless cavity of the hydraulic cylinder are isolated; the piston is provided with internal threads which are connected with the external threads of the piston rod in a positioning way, the rear side of the piston is provided with a limiting nut positioning one-way screw, and the rear side of the limiting nut is provided with a riding screw for preventing looseness; an oil passage hole is formed in the cylinder body, when the piston rod extends out, the check valve is opened, oil is fed into the check valve hole and the second throttling hole simultaneously, the check valve does not work any more when the second sealing ring crosses the oil passage hole, when the piston rod retracts, the second sealing ring is continuously close to the oil passage hole, the check valve is closed when the second sealing ring crosses the oil passage hole, oil in a rodless cavity of the hydraulic cylinder only flows back through the small throttling screw hole, and the buffer structure works; the utility model can adjust the drift diameter of the throttling hole by replacing the throttling screw, thereby adjusting the buffering effect.
Preferably, the piston is provided with an O-shaped ring groove, the O-shaped ring is installed to play a role in sealing, and a rod cavity and a rodless cavity of the hydraulic cylinder are isolated.
Preferably, the piston is provided with an internal thread which is connected with the external thread of the piston rod in a positioning manner, the rear side of the piston is provided with a limiting nut for positioning the one-way screw, and the rear side of the limiting nut is provided with a riding screw for preventing looseness.
Preferably, set up the oil duct hole on the cylinder body, during the piston rod withdrawal, the second sealing washer is constantly close the oil duct hole, and the check valve is closed when the second sealing washer crosses the oil duct hole, and the fluid of the rodless chamber of pneumatic cylinder flows back through the orifice of the throttle screw, and buffer structure plays a role.
Preferably, the throttling screw is replaceable, and the diameter of the throttling hole can be adjusted by replacing the throttling screw, so that the buffering effect can be adjusted.
Compared with the prior art, the utility model has the following beneficial effects: the utility model has simple and novel structure, low processing difficulty and high assembly efficiency, can adjust the buffering effect by replacing the throttling screw, has obvious buffering effect and can effectively realize the grasping function.
Drawings
The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the principles of the utility model and not to limit the utility model. In the drawings:
FIG. 1 is a schematic view of a buffer structure of the present invention;
FIG. 2 is a schematic view of the piston construction of the present invention;
fig. 3 is a schematic view of the check valve structure of the present invention.
In the figure: 1. a piston; 2. an O-shaped ring; 3. a piston rod; 4. a cylinder body; 401. an oil passage hole; 5. a first support ring; 6. a first seal ring; 7. a throttle screw; 8. a second seal ring; 9. a second support ring; 10. A limit nut; 101. a first orifice; 102. a throttling groove; 103. a second orifice; 104. a first support ring groove; 105. a first seal groove; 106. a second seal groove; 107. a second support ring groove; 109. A valve seat; 110. a one-way valve hole; 111. an internal thread; 112. an O-shaped ring groove; 11. a dowel screw; 12. A steel ball; 13. a one-way spring; 14. a one-way screw.
Detailed Description
The preferred embodiments of the present invention will be described in conjunction with the accompanying drawings, and it will be understood that they are described herein for the purpose of illustration and explanation and not limitation.
Examples
As shown in fig. 1-3, a hydraulic cylinder cushion structure comprises a piston 1, an O-ring 2, a piston rod 3, a cylinder body 4, a first support ring 5, a first seal ring 6, a throttle screw 7, a second seal ring 8, a second support ring 9, a limit nut 10, a seam-riding screw 11, a steel ball 12, a one-way spring 13, and a one-way screw 14, wherein the piston is provided with a first throttle hole 101, a throttle groove 102, a second throttle hole 103 in the radial direction, the first support ring 5, the first seal ring 6, the throttle screw 7, the second seal ring 8, and the second support ring 9, the piston is provided with a one-way valve hole 110 in the axial direction, the one-way screw 14, the one-way spring 13, and the steel ball 12 are arranged in the hole, the one-way valve hole 110, the one-way screw 14, the one-way spring 13, and the steel ball 12 jointly form a one-way valve, the first throttle groove 101, the throttle groove 102, and the second throttle hole 103 are arranged in the radial direction, the double-support structure is characterized in that a first support ring groove 104, a first seal groove 105, a second seal groove 106 and a second support ring groove 107 are arranged, a first support ring 5, a first seal ring 6, a throttling screw 7, a second seal ring 8 and a second support ring 9 are installed, the first support ring 5 and the second seal ring 8 form a double-support guide structure, the first seal ring 6 and the second support ring 9 form a double-seal structure, the first seal ring 6 guarantees the initial buffering time and the buffering length, and the second support ring 9 always isolates a hydraulic rod cavity and a rodless cavity; the piston is axially provided with a valve seat 109 and a one-way valve hole 110, a one-way screw 14, a one-way spring 13 and a steel ball 12 are arranged in the hole, and the valve seat 109, the one-way valve hole 110, the one-way screw 14, the one-way spring 13 and the steel ball 12 form a one-way valve together; the piston is provided with an O-shaped ring groove 112, an O-shaped ring 2 is arranged to play a role in sealing, and a rod cavity and a rodless cavity of the hydraulic cylinder are isolated; the piston is provided with an internal thread 111 which is connected with the external thread of the piston rod in a positioning way, the rear side of the piston is provided with a limiting nut 10 which is used for positioning a one-way screw 14, and the rear side of the limiting nut 10 is provided with a riding seam screw 11 which is anti-loose; an oil channel hole 401 is formed in the cylinder body, when the piston rod 3 extends out, the check valve is opened, oil is fed into the check valve hole 110 and the second throttling hole 103 simultaneously, when the second sealing ring 8 passes through the oil channel hole 401, the check valve does not work any more, when the piston rod 3 retracts, the second sealing ring 8 is continuously close to the oil channel hole 401, when the second sealing ring 8 passes through the oil channel hole 401, the check valve is closed, oil in a rodless cavity of the hydraulic cylinder only flows back through the small hole of the throttling screw 7, and the buffering structure works; the utility model can adjust the drift diameter of the throttling hole by replacing the throttling screw 7, thereby adjusting the buffering effect.
In this embodiment, the piston is provided with an O-ring groove 112, and the O-ring 2 is installed to seal and isolate the rod cavity and the rodless cavity of the hydraulic cylinder.
In this embodiment, the piston is provided with an internal thread 111 which is connected with the external thread of the piston rod in a positioning manner, the rear side of the piston is provided with a limit nut 10 which is used for positioning a one-way screw 14, and the rear side of the limit nut 10 is provided with a riding seam screw 11 which is anti-loose.
In this embodiment, set up oil duct hole 401 on the cylinder body, when piston rod 3 withdraws, second sealing washer 8 constantly is close oil duct hole 401, and the check valve is closed when second sealing washer 8 crosses oil duct hole 401, and 7 aperture refluxes through the throttle spiral shell in the hydraulic cylinder rodless chamber fluid, and buffer structure plays a role.
In this embodiment, the throttle screw 7 is replaceable, and the diameter of the throttle hole can be adjusted by replacing the throttle screw 7, so that the buffering effect can be adjusted.
The principle and the advantages of the utility model are as follows: a first throttling hole 101, a throttling groove 102 and a second throttling hole 103 are arranged in the radial direction of the piston, a first supporting ring groove 104, a first sealing groove 105, a second sealing groove 106 and a second supporting ring groove 107 are arranged, a first supporting ring 5, a first sealing ring 6, a throttling screw 7, a second sealing ring 8 and a second supporting ring 9 are arranged, the first supporting ring 5 and the second sealing ring 8 form a double-supporting guide structure, the first sealing ring 6 and the second supporting ring 9 form a double-sealing structure, the first sealing ring 6 ensures the initial buffering time and the buffering length, and the second supporting ring 9 always isolates a hydraulic rod cavity and a rodless cavity; the piston is axially provided with a valve seat 109 and a one-way valve hole 110, a one-way screw 14, a one-way spring 13 and a steel ball 12 are arranged in the hole, and the valve seat 109, the one-way valve hole 110, the one-way screw 14, the one-way spring 13 and the steel ball 12 form a one-way valve together; the piston is provided with an O-shaped ring groove 112, an O-shaped ring 2 is arranged to play a role in sealing, and a rod cavity and a rodless cavity of the hydraulic cylinder are isolated; the piston is provided with an internal thread 111 which is connected with the external thread of the piston rod in a positioning way, the rear side of the piston is provided with a limiting nut 10 which is used for positioning a one-way screw 14, and the rear side of the limiting nut 10 is provided with a riding seam screw 11 which is anti-loose; an oil passage hole 401 is formed in the cylinder body, when the piston rod 3 extends out, the check valve is opened, oil is fed into the check valve hole 110 and the second throttling hole 103 simultaneously, when the second sealing ring 8 passes through the oil passage hole 401, the check valve does not work any more, when the piston rod 3 retracts, the second sealing ring 8 is continuously close to the oil passage hole 401, when the second sealing ring 8 passes through the oil passage hole 401, the check valve is closed, oil in a rodless cavity of the hydraulic cylinder only flows back through the small hole of the throttling screw 7, and the buffer structure works; the utility model can adjust the drift diameter of the throttling hole by replacing the throttling screw 7, thereby adjusting the buffering effect.
Finally, it should be noted that: although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that changes may be made in the embodiments and/or equivalents thereof without departing from the spirit and scope of the utility model. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. The utility model provides a pneumatic cylinder buffer structure, includes piston (1), O type circle (2), piston rod (3), cylinder body (4), first supporting ring (5), first sealing washer (6), throttle spiral shell (7), second sealing washer (8), second supporting ring (9), stop nut (10), strides seam screw (11), steel ball (12), one-way spring (13), one-way spiral shell (14), its characterized in that: the piston is provided with a first throttling hole (101), a throttling groove (102), a second throttling hole (103), a first supporting ring (5), a first sealing ring (6), a throttling screw (7), a second sealing ring (8) and a second supporting ring (9) in the radial direction, the piston is provided with a one-way valve hole (110) in the axial direction, a one-way screw (14), a one-way spring (13) and a steel ball (12) are arranged in the hole, and the one-way valve hole (110), the one-way screw (14), the one-way spring (13) and the steel ball (12) jointly form a one-way valve.
2. The hydraulic cylinder cushion structure according to claim 1, wherein: the piston is provided with an O-shaped ring groove (112) which is provided with an O-shaped ring (2) for sealing and isolating a rod cavity and a rodless cavity of the hydraulic cylinder.
3. The hydraulic cylinder cushion structure according to claim 1, wherein: the piston is provided with an internal thread (111) which is connected with the external thread of the piston rod in a positioning way, the rear side of the piston is provided with a limiting nut (10) which is used for positioning a one-way screw (14), and the rear side of the limiting nut (10) is provided with a riding seam screw (11) which is anti-loose.
4. The hydraulic cylinder cushion structure according to claim 1, wherein: set up oil duct hole (401) on the cylinder body, during piston rod (3) withdrawal, second sealing washer (8) are constantly close oil duct hole (401), and the check valve is closed when second sealing washer (8) are crossed oil duct hole (401), and the hydraulic cylinder does not have pole chamber fluid and passes through throttle spiral shell (7) aperture backward flow, and buffer structure plays a role.
5. The hydraulic cylinder cushion structure according to claim 1, wherein: the throttling screw (7) is replaceable, and the diameter of the throttling hole can be adjusted by replacing the throttling screw (7), so that the buffering effect is adjusted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121645866.XU CN216642620U (en) | 2021-07-20 | 2021-07-20 | Hydraulic cylinder buffer structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121645866.XU CN216642620U (en) | 2021-07-20 | 2021-07-20 | Hydraulic cylinder buffer structure |
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| Publication Number | Publication Date |
|---|---|
| CN216642620U true CN216642620U (en) | 2022-05-31 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121645866.XU Active CN216642620U (en) | 2021-07-20 | 2021-07-20 | Hydraulic cylinder buffer structure |
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| CN (1) | CN216642620U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114962388A (en) * | 2022-07-29 | 2022-08-30 | 江苏恒立液压股份有限公司 | Buffer piston and oil cylinder with same |
-
2021
- 2021-07-20 CN CN202121645866.XU patent/CN216642620U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114962388A (en) * | 2022-07-29 | 2022-08-30 | 江苏恒立液压股份有限公司 | Buffer piston and oil cylinder with same |
| CN114962388B (en) * | 2022-07-29 | 2022-12-23 | 江苏恒立液压股份有限公司 | Buffer piston and oil cylinder with same |
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230807 Address after: No. 199, Pingguoyuan Road East, Songguantun Subdistricts of China, Dezhou Economic and Technological Development Zone, Shandong Province, 253000 Patentee after: DEZHOU YULI HYDRAULIC Co.,Ltd. Address before: 253000 Room 502, unit 5, building 7, No. 90, Tiexi South Road, Decheng District, Dezhou City, Shandong Province Patentee before: Song Shenghua |
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| TR01 | Transfer of patent right |