CN101315090A - Self-locking oil cylinder - Google Patents
Self-locking oil cylinder Download PDFInfo
- Publication number
- CN101315090A CN101315090A CNA2008101231402A CN200810123140A CN101315090A CN 101315090 A CN101315090 A CN 101315090A CN A2008101231402 A CNA2008101231402 A CN A2008101231402A CN 200810123140 A CN200810123140 A CN 200810123140A CN 101315090 A CN101315090 A CN 101315090A
- Authority
- CN
- China
- Prior art keywords
- piston rod
- piston
- self
- oil cylinder
- locking oil
- 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
Links
Images
Landscapes
- Actuator (AREA)
Abstract
The invention relates to a self-locking oil cylinder, which comprises a cylinder sleeve, a piston, and a piston rod. A first oil inlet hole and a second oil inlet hole respectively positioned on the front side and the rear side of the piston are formed on the cylinder sleeve, a positioning piece is fixedly arranged inside the cylinder sleeve and close to one of the oil inlet holes, and a hole allowing a stopping element to conduct radial movement along the piston rod is formed on the positioning piece; the piston comprises a piston body and a pressed block, the piston body is connected on the piston rod, the pressed block is flexibly connected on the piston body via a second elastic element, and a notch allowing the positioning piece to be inserted is formed between the pressed block and the piston rod; a stopping groove is arranged on the piston rod along peripheral direction, the wall of the stopping groove smoothly transits to the outside diameter of the piston rod, when the self-locking oil cylinder is locked, the stopping element falls into the stopping groove, and the pressed block stops the stopping element along the radial direction of the piston rod; and when the self-locking oil cylinder is unlocked, the positioning piece is detached from the notch, and a free space allowing the stopping element to conduct radial movement along the piston rod is arranged inside the cylinder sleeve.
Description
Technical field
The present invention relates to a kind of self-locking oil cylinder, particularly relate to a kind of structure of utilizing oil pressure and retainer that piston rod is locked.
Background technique
At present, in hydraulic system, the piston rod of oil cylinder has offset phenomena when remaining on the state of stretching out or contraction state, and especially when carrying bigger external force, piston rod can move under external force.
Summary of the invention
The object of the present invention is to provide a kind of oil cylinder that utilizes retainer and oil pressure to carry out self-locking, its locking is reliable.
The technical solution adopted in the present invention is: a kind of self-locking oil cylinder, it comprises cylinder sleeve, piston, piston rod, offering first of the front side that lays respectively at described piston and rear side on the described cylinder sleeve goes into oilhole and second and goes into oilhole, also be set with positioning block in the described cylinder sleeve, described positioning block is close to above-mentioned one of them and goes into the oilhole place, and offering on the described positioning block can be for the hole that move radially of retainer along piston rod; Described piston comprises: piston only and briquetting, described piston only is connected on the described piston rod, described briquetting is connected on the described piston only by the second elastic component elasticity, and offering between described briquetting and the described piston rod can be for the breach of described positioning block insertion; Along the circumferential direction offer locking groove on the described piston rod, the cell wall of described locking groove and the external diameter of described piston rod are smooth excessively.
Described piston only is connected on the described piston rod movably by first elastic component.
Described first elastic component and described second elastic component are stage clip.
Side near described positioning block on the described briquetting has the inclination lead angle.
The external peripheral surface of described piston only and described briquetting is sealed and matched mutually with the internal face of described cylinder sleeve.
When going in the oilhole oiling to one of them, fluid can promote piston and piston rod moves to the opposite side of cylinder sleeve, in locating piece is inserted in breach between briquetting and the piston rod, described retainer falls in the described locking groove, described briquetting radially blocks described retainer along described piston rod, described self-locking oil cylinder locking; When going in the oilhole oiling to another, briquetting and piston return under fluid promotes, the drive piston rod returns, positioning block breaks away from breach gradually, thereby make to have in the described cylinder sleeve and can make the free space that move radially of described retainer along described piston rod, gradient on the locking groove is just lifted retainer and leave locking groove, described self-locking oil cylinder release.
The present invention utilizes oil pressure to carry out release, and it is very firm to lock, and can bear the ambient pressure greater than 25MPa, can also avoid piston rod to take out, and oil cylinder is just understood release when having only in another oil hole oiling.
Description of drawings
Accompanying drawing 1 partly cuts open schematic representation (under the lock state) for embodiments of the invention one;
Accompanying drawing 2 partly cuts open schematic representation (under the released state) for embodiments of the invention one;
Accompanying drawing 3 is the plan view of embodiments of the invention one;
Accompanying drawing 4 partly cuts open schematic representation (under the released state) for embodiments of the invention two;
Wherein: 1, cylinder sleeve; 2, piston rod; 3, piston; 4, end cap; 5, positioning block; 6, locking groove; 7, briquetting; 8, earrings; 9, first elastic component; 10, second elastic component; 11, retainer; 12, bearing; 13, first goes into oilhole; 14, second goes into oilhole; 15, piston only; 16, breach;
Embodiment
Accompanying drawing 1 to accompanying drawing 3 is embodiments of the invention one, a kind of oil cylinder of afterbody self-locking, it comprises cylinder sleeve 1, piston 3, piston rod 2, offering first of the front side that lays respectively at described piston 3 and rear side on the described cylinder sleeve 1 goes into oilhole 13 and second and goes into oilhole 14 (after the left side is in the accompanying drawing 1, the right side is preceding), when oil cylinder was in rise, first goes into oilhole 13 went into oil; When oil cylinder was in backhaul, second goes into oilhole 14 went into oil.
Also be set with positioning block 5 in the described cylinder sleeve 1, described positioning block 5 is positioned at above-mentioned first and goes into the below of oilhole 13, be the position of cylinder sleeve 1 afterbody, offering on the described positioning block 5 can be for the hole that move radially of retainer 11 along piston rod 2, and described retainer 11 is a spherical ball.
Described piston 3 comprises: piston only 15 and briquetting 7, the external peripheral surface of described piston only 15 and described briquetting 7 is sealed and matched mutually with the internal face of described cylinder sleeve 1.Described piston only 15 is connected on the described piston rod 2, described piston only 15 is connected on the described piston rod 2 movably by first elastic component 9, described briquetting 7 is connected on the described piston only 15 by second elastic component, 10 elasticity, offering between described briquetting 7 and the described piston rod 2 can be for the breach 16 of described positioning block 5 insertions, and described first elastic component 9 and described second elastic component 10 are stage clip.
Along the circumferential direction offer locking groove 6 on the described piston rod 2, the external diameter of the cell wall of described locking groove 6 and described piston rod 2 is smooth excessively.When first goes in the oilhole 13 oiling, fluid can promote piston 3 and piston rod 2 moves to the opposite side of cylinder sleeve 1, in locating piece 5 is inserted in breach 16 between briquetting 7 and the piston rod 2, described retainer 11 falls in the described locking groove 6, described briquetting 7 is along the described retainer 11 of radially blocking of described piston rod 2, at this moment, described self-locking oil cylinder locking; When second goes in the oilhole 14 oiling, briquetting 7 and piston 3 return under fluid promotes, driving piston rod 2 returns, positioning block 5 breaks away from breach 16 gradually, thereby make to have in the described cylinder sleeve 1 and can make the free space that move radially of described retainer 11 along described piston rod 2, locking groove 6 is lifted and left to gradient on the locking groove 6 just with retainer 11, described self-locking oil cylinder release.
Side near described positioning block 7 on the described briquetting 7 has the inclination lead angle, and this can make that briquetting 7 is easy to retainer 11 is pushed in the locking groove 6 downwards.
Accompanying drawing 4 is embodiments of the invention two, and itself and embodiment's one difference is that positioning block 5 is arranged on the front side of cylinder sleeve 1 in the present embodiment, and second goes into the below of oilhole 14.During work, go into oiling in the oilhole 13 to first, when piston rod 2 was positioned at foremost, brake slipper 11 fell, with piston rod 2 lockings; Have only and when second goes in the oilhole 14 oiling, just understand release.
Claims (6)
1, a kind of self-locking oil cylinder, it comprises cylinder sleeve (1), piston (3), piston rod (2), offering first of the front side that lays respectively at described piston (3) and rear side on the described cylinder sleeve (1) goes into oilhole (13) and second and goes into oilhole (14), it is characterized in that: also be set with positioning block (5) in the described cylinder sleeve (1), described positioning block (5) is close to above-mentioned one of them goes into oilhole (13,14) and locates, and offers on the described positioning block (5) and can supply the hole that move radially of retainer (11) along piston rod (2); Described piston (3) comprising: piston only (15) and briquetting (7), described piston only (15) is connected on the described piston rod (2), described briquetting (7) is connected on the described piston only (15) by second elastic component (10) elasticity, and offering between described briquetting (7) and the described piston rod (2) can be for the breach (16) of described positioning block (5) insertion; Along the circumferential direction offer locking groove (6) on the described piston rod (2), the external diameter of the cell wall of described locking groove (6) and described piston rod (2) is smooth excessively, when described self-locking oil cylinder locks, described retainer (11) falls in the described locking groove (6), and described briquetting (7) radially blocks described retainer (11) along described piston rod (2); When described self-locking oil cylinder release, described positioning block (5) breaks away from described breach (16), has in the described cylinder sleeve (1) to make the free space that move radially of described retainer (11) along described piston rod (2).
2, self-locking oil cylinder according to claim 1 is characterized in that: described piston only (15) is connected on the described piston rod (2) movably by first elastic component (9).
3, self-locking oil cylinder according to claim 2 is characterized in that: described first elastic component (9) and described second elastic component (10) are stage clip.
4, self-locking oil cylinder according to claim 1 is characterized in that: described retainer (11) is a spherical ball.
5, self-locking oil cylinder according to claim 1 is characterized in that: the side that described briquetting (7) is gone up near described positioning block (7) has the inclination lead angle.
6, self-locking oil cylinder according to claim 1 is characterized in that: the external peripheral surface of described piston only (15) and described briquetting (7) is sealed and matched mutually with the internal face of described cylinder sleeve (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008101231402A CN101315090A (en) | 2008-06-06 | 2008-06-06 | Self-locking oil cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008101231402A CN101315090A (en) | 2008-06-06 | 2008-06-06 | Self-locking oil cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101315090A true CN101315090A (en) | 2008-12-03 |
Family
ID=40106208
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2008101231402A Pending CN101315090A (en) | 2008-06-06 | 2008-06-06 | Self-locking oil cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101315090A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102434533A (en) * | 2011-12-05 | 2012-05-02 | 海卓泰克液压技术（苏州）有限公司 | Locking device of oil cylinder |
| CN109578371A (en) * | 2018-12-05 | 2019-04-05 | 陕西理工大学 | A kind of locking cylinder |
-
2008
- 2008-06-06 CN CNA2008101231402A patent/CN101315090A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102434533A (en) * | 2011-12-05 | 2012-05-02 | 海卓泰克液压技术（苏州）有限公司 | Locking device of oil cylinder |
| CN109578371A (en) * | 2018-12-05 | 2019-04-05 | 陕西理工大学 | A kind of locking cylinder |
| CN109578371B (en) * | 2018-12-05 | 2020-06-16 | 陕西理工大学 | Locking cylinder |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101166908B (en) | Connector with a locking member | |
| CN104006032B (en) | The locked oil hydraulic cylinder of a kind of two-way mechanical | |
| US9897206B2 (en) | Actuator for actuating a parking lock | |
| CN208041118U (en) | The speed changer of vehicle hydraulic pressure halting mechanism and with its vehicle | |
| CN203641170U (en) | Steel ball lock and interference external lock combined locking type hydraulic cylinder | |
| EP2837347A3 (en) | Bone anchoring device | |
| WO2009092917A3 (en) | Quick-coupling device for a tube with a safety ring | |
| JP7160905B2 (en) | Fluid container for connecting to vehicle components | |
| CN201246366Y (en) | Self-locking oil cylinder | |
| KR20160037165A (en) | Fluid pressure cylinder | |
| CN101315090A (en) | Self-locking oil cylinder | |
| CN104797792A (en) | Self aligning piston and manufacture method thereof | |
| CN101799094A (en) | Sealing structure | |
| CN102518621A (en) | Actuator cylinder position locking and unlocking mechanism | |
| EP2672070A3 (en) | Nozzle Mounting and Sealing Assembly and Method of Mounting and Sealing a Nozzle Assembly | |
| CN101220878B (en) | Shuttle type micro-resistance check valve | |
| CN102817882A (en) | Single-displacement locking oil cylinder | |
| CN204403032U (en) | Adjustable lock locking oil cylinder | |
| GB2466885A (en) | Tubular expander | |
| CN201407243Y (en) | Oil cylinder mechanical self-locking device | |
| CN205503675U (en) | Connect quick -release round pin | |
| US20090159030A1 (en) | Switchable hydraulic lash adjuster with spherical locking pins | |
| WO2009027314A3 (en) | Plug-in connection for systems using a pressurized medium | |
| CN109578396B (en) | Bearing locking structure | |
| CN103911754B (en) | A kind of shuttle of weaving loom |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Open date: 20081203 |