CN211314729U - Locking structure for piston rod of hydraulic cylinder - Google Patents
Locking structure for piston rod of hydraulic cylinder Download PDFInfo
- Publication number
- CN211314729U CN211314729U CN201922359995.1U CN201922359995U CN211314729U CN 211314729 U CN211314729 U CN 211314729U CN 201922359995 U CN201922359995 U CN 201922359995U CN 211314729 U CN211314729 U CN 211314729U
- Authority
- CN
- China
- Prior art keywords
- cylinder
- cylinder cover
- piston rod
- taper sleeve
- sleeve
- 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.)
- Active
Links
Images
Landscapes
- Actuator (AREA)
Abstract
The utility model relates to a locking structure for a hydraulic cylinder piston rod, which comprises a first cylinder cover and a second cylinder cover which are matched with the outer ring of the piston rod, wherein an elastic holding sleeve is also matched between the first cylinder cover and the second cylinder cover and along the outer ring of the piston rod, and the outer ring of the holding sleeve is in clearance fit with the inner ring of a taper sleeve; one end face of the taper sleeve is in sealing fit with the inner stepped circle of the first cylinder cover, the other end of the taper sleeve is abutted against one end of the disc spring group, and the other end of the disc spring group is abutted against the inner side of the second cylinder cover; and a cylinder barrel provided with an oil hole is matched along the outer ring of the taper sleeve, one end of the cylinder barrel is fixedly connected with the second cylinder cover, and the other end of the cylinder barrel is fixedly connected with the first cylinder cover. The utility model discloses simple structure, convenient to use, it makes belleville spring group stretch out and draw back wantonly through nimble fuel feeding mode to realize that the taper sleeve is to holding tightly or loosening of cover, make the piston rod can be in optional position department by locking or reciprocal flexible, effectively satisfied customer's user demand.
Description
Technical Field
The utility model relates to a piston rod locking device field especially relates to a locking structure for pneumatic cylinder piston rod.
Background
The hydraulic cylinder is a hydraulic actuator which converts hydraulic energy into mechanical energy and performs linear reciprocating motion (or swinging motion). It has the advantages of simple structure and reliable operation. When the reciprocating motion is realized, a speed reducing device can be omitted, no transmission clearance exists, the motion is smooth, and the reciprocating motion is widely applied to hydraulic systems of various machines. The output force of the hydraulic cylinder is in direct proportion to the effective area of the piston and the pressure difference between the two sides of the effective area, and the hydraulic cylinder basically comprises a cylinder barrel, a cylinder cover, the piston, a piston rod, a sealing device, a buffering device and an exhaust device.
At present, the hydraulic cylinder structure needs to be locked at any position aiming at a piston rod, and the traditional hydraulic cylinder structure does not have a structure capable of realizing the function, so that the locking structure for the piston rod is urgently needed to be designed.
SUMMERY OF THE UTILITY MODEL
The applicant aims at the existing problems and carries out research and improvement, and provides a locking structure for a piston rod of a hydraulic cylinder, which can realize the locking of the piston rod at any position and has the advantages of simple structure and convenient use.
The utility model discloses the technical scheme who adopts as follows:
the locking structure for the piston rod of the hydraulic cylinder comprises a first cylinder cover and a second cylinder cover which are matched with the outer ring of the piston rod, an elastic holding sleeve is also matched between the first cylinder cover and the second cylinder cover and along the outer ring of the piston rod, and the outer ring of the holding sleeve is in clearance fit with the inner ring of a taper sleeve; one end face of the taper sleeve is in sealing fit with the inner stepped circle of the first cylinder cover, the other end of the taper sleeve is abutted against one end of the disc spring group, and the other end of the disc spring group is abutted against the inner side of the second cylinder cover; and a cylinder barrel provided with an oil hole is matched along the outer ring of the taper sleeve, one end of the cylinder barrel is fixedly connected with the second cylinder cover, and the other end of the cylinder barrel is fixedly connected with the first cylinder cover.
The further technical scheme is as follows:
the outer matching surface of the holding sleeve is a conical surface, and the inner matching surface of the taper sleeve is also a conical surface;
the circle that taper sleeve and cylinder butt still seted up the outer seal groove that is used for installing the sealing member the contact surface of taper sleeve and the interior ladder circle of first cylinder cap also sets up the inner seal groove that is used for installing the sealing member.
The utility model has the advantages as follows:
the utility model discloses simple structure, convenient to use, it makes belleville spring group stretch out and draw back wantonly through nimble fuel feeding mode to realize that the taper sleeve is to holding tightly or loosening of cover, make the piston rod can be in optional position department by locking or reciprocal flexible, effectively satisfied customer's user demand.
Drawings
Fig. 1 is a schematic view of the unlocked structure of the present invention.
Fig. 2 is a schematic structural diagram of the present invention in a locked state.
Wherein: 1. a first cylinder head; 2. a taper sleeve; 201. an inner mating surface; 3. a clasping sleeve; 301. an outer mating surface; 4. a disc spring set; 5. a cylinder barrel; 6. a second cylinder head; 7. a piston rod.
Detailed Description
The following describes embodiments of the present invention.
As shown in fig. 1 and 2, the locking structure for the piston rod of the hydraulic cylinder comprises a first cylinder cover 1 and a second cylinder cover 6, and the first cylinder cover 1 and the second cylinder cover 6 are both matched with the outer ring of a piston rod 7. An elastic holding sleeve 3 is also matched between the first cylinder cover 1 and the second cylinder cover 6 along the outer ring of the piston rod 7, and the outer ring of the holding sleeve 3 is in clearance fit with the inner ring of the taper sleeve 2; the outer matching surface 301 of the holding sleeve 3 is a conical surface, and the inner matching surface 201 of the taper sleeve 2 is also a conical surface. One end face of the clasping sleeve 3 is in sealing fit with the inner stepped circle of the first cylinder cover 1, the other end of the clasping sleeve 3 is abutted against one end of the disc spring group 4, and the other end of the disc spring group 4 is abutted against the inner side of the second cylinder cover 6; and a cylinder barrel 5 provided with an oil hole is matched along the outer ring of the taper sleeve 2, one end of the cylinder barrel 5 is fixedly connected with a second cylinder cover 6, and the other end of the cylinder barrel 5 is fixedly connected with the first cylinder cover 1. The circle of the taper sleeve 2 abutting against the cylinder barrel 5 is also provided with an outer sealing groove for mounting a sealing element, and the contact surface of the taper sleeve 2 and the inner stepped circle of the first cylinder cover 1 is also provided with an inner sealing groove for mounting the sealing element.
The utility model discloses a concrete working process as follows:
as shown in fig. 1, when the piston rod 7 needs to be extended in any movement, oil enters the oil hole 501 in the cylinder 5, as shown in fig. 1, the oil pressure drives the taper sleeve 2 to move relative to the clasping sleeve 3, so that the clasping sleeve 3 with elasticity is not pressed by the taper sleeve 2 in the moving process, and meanwhile, the taper sleeve 2 presses the disc spring group 4 when moving rightwards relative to the clasping sleeve 3 as shown in fig. 1, so that the piston rod 7 can be extended out in any way without being pressed.
As shown in fig. 2, when the oil supply is stopped, the disc spring set 4 is not pressed and recovers deformation, the taper sleeve 2 is driven to move leftwards as shown in fig. 2 in the process of recovering deformation, and since the inner matching surface 201 of the taper sleeve 2 and the outer matching surface 301 of the holding sleeve 3 are both inclined surfaces, the contact surface of the taper sleeve 2 and the holding sleeve 3 gradually increase in the moving process of the taper sleeve 2, so that the inner ring of the holding sleeve 3 is gradually pressurized and holds the outer ring of the piston rod 7 as shown by an arrow in fig. 2, the outer ring of the piston rod 7 is pressed and cannot move, and the locking is realized.
The utility model discloses simple structure, convenient to use, it makes belleville spring group stretch out and draw back wantonly through nimble fuel feeding mode to realize that the taper sleeve is to holding tightly or loosening of cover, make the piston rod can be in optional position department by locking or reciprocal flexible, effectively satisfied customer's user demand.
The above description is for the purpose of explanation and not limitation of the invention, which is defined in the claims, and any modifications may be made without departing from the basic structure of the invention.
Claims (3)
1. A locking structure for pneumatic cylinder piston rod, its characterized in that: the cylinder cover comprises a first cylinder cover (1) and a second cylinder cover (6) which are matched with the outer ring of a piston rod (7), an elastic holding sleeve (3) is matched between the first cylinder cover (1) and the second cylinder cover (6) along the outer ring of the piston rod (7), and the outer ring of the holding sleeve (3) is in clearance fit with the inner ring of a taper sleeve (2); the end face of one end of the taper sleeve (2) is in sealing fit with the inner stepped circle of the first cylinder cover (1), the other end of the taper sleeve (2) is abutted against one end of the disc spring group (4), and the other end of the disc spring group (4) is abutted against the inner side of the second cylinder cover (6); and a cylinder barrel (5) provided with an oil hole is matched with the outer ring of the taper sleeve (2), one end of the cylinder barrel (5) is fixedly connected with the second cylinder cover (6), and the other end of the cylinder barrel (5) is fixedly connected with the first cylinder cover (1).
2. A locking structure for a piston rod of a hydraulic cylinder according to claim 1, wherein: the outer matching surface (301) of the holding sleeve (3) is a conical surface, and the inner matching surface (201) of the taper sleeve (2) is also a conical surface.
3. A locking structure for a piston rod of a hydraulic cylinder according to claim 1, wherein: the circle of taper sleeve (2) and cylinder (5) butt still sets up the outer seal groove that is used for installing the sealing member taper sleeve (2) and first cylinder cap (1) interior ladder circle's contact surface also sets up the inner seal groove that is used for installing the sealing member.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922359995.1U CN211314729U (en) | 2019-12-24 | 2019-12-24 | Locking structure for piston rod of hydraulic cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201922359995.1U CN211314729U (en) | 2019-12-24 | 2019-12-24 | Locking structure for piston rod of hydraulic cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN211314729U true CN211314729U (en) | 2020-08-21 |
Family
ID=72077610
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922359995.1U Active CN211314729U (en) | 2019-12-24 | 2019-12-24 | Locking structure for piston rod of hydraulic cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN211314729U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110374587A (en) * | 2019-08-19 | 2019-10-25 | 天地科技股份有限公司上海分公司 | The telescopic cutting mechanism of development machine |
| CN114922879A (en) * | 2022-04-02 | 2022-08-19 | 宁波悦威液压科技有限公司 | Deep sea water pressure self-locking type oil cylinder |
| CN115179184A (en) * | 2022-07-27 | 2022-10-14 | 苏州信能精密机械有限公司 | Holding type adjustable honing main shaft |
-
2019
- 2019-12-24 CN CN201922359995.1U patent/CN211314729U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110374587A (en) * | 2019-08-19 | 2019-10-25 | 天地科技股份有限公司上海分公司 | The telescopic cutting mechanism of development machine |
| CN110374587B (en) * | 2019-08-19 | 2024-09-03 | 天地科技股份有限公司上海分公司 | Telescopic cutting mechanism of heading machine |
| CN114922879A (en) * | 2022-04-02 | 2022-08-19 | 宁波悦威液压科技有限公司 | Deep sea water pressure self-locking type oil cylinder |
| CN114922879B (en) * | 2022-04-02 | 2024-05-10 | 宁波悦威液压科技有限公司 | Deep sea water pressure self-locking type oil cylinder |
| CN115179184A (en) * | 2022-07-27 | 2022-10-14 | 苏州信能精密机械有限公司 | Holding type adjustable honing main shaft |
| CN115179184B (en) * | 2022-07-27 | 2024-03-01 | 苏州信能精密机械有限公司 | Enclasping type adjustable honing main shaft |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN211314729U (en) | Locking structure for piston rod of hydraulic cylinder | |
| EP0896174A3 (en) | Piston ring arrangement for shock absorber | |
| CN211009895U (en) | Hydraulic oil cylinder | |
| CN218598518U (en) | Multistage hydraulic cylinder of easily leading | |
| CN111810485A (en) | Hydraulic oil cylinder assembly | |
| CN216044752U (en) | Mechanical positioning self-locking oil cylinder | |
| CN212297110U (en) | Engineering machinery hydraulic cylinder capable of reducing replacement frequency of sealing ring | |
| CN210461243U (en) | Straight reciprocating motion type oil cylinder | |
| CN210034016U (en) | Adjustable floating cylinder | |
| CN113048102A (en) | Novel fast-acting hydraulic oil cylinder with energy accumulator | |
| CN108050129B (en) | Combined sealing structure | |
| CN211550141U (en) | Piston with high sealing performance for hydraulic oil cylinder | |
| CN215805500U (en) | Improved servo hydraulic cylinder | |
| CN111390827B (en) | Hand piston ring erection equipment based on effect of force | |
| CN217462723U (en) | Engineering machinery hydraulic oil cylinder with buffering function | |
| CN217177032U (en) | Novel metallurgical hydraulic cylinder | |
| CN216009098U (en) | Hydraulic oil cylinder with built-in magnetostrictive displacement sensor | |
| CN220302455U (en) | Dustproof hydraulic cylinder | |
| CN212455041U (en) | Novel air cylinder | |
| CA2303102A1 (en) | Coupling for high pressure fluid pump assembly | |
| CN211249800U (en) | Clamping die of ball cage universal joint | |
| CN216707332U (en) | Dismounting device for hydraulic oil cylinder | |
| CN220522948U (en) | Novel hydraulic cylinder | |
| CN220566347U (en) | Hydraulic cylinder anti-loosening structure | |
| CN210068623U (en) | Long-stroke hydraulic cylinder |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |