CN203453189U - Two-stage oil cylinder locking device used for sleeve type oil cylinder - Google Patents
Two-stage oil cylinder locking device used for sleeve type oil cylinder Download PDFInfo
- Publication number
- CN203453189U CN203453189U CN201320548074.XU CN201320548074U CN203453189U CN 203453189 U CN203453189 U CN 203453189U CN 201320548074 U CN201320548074 U CN 201320548074U CN 203453189 U CN203453189 U CN 203453189U
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- China
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- oil cylinder
- stage
- locking device
- end cap
- stage oil
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Abstract
The utility model discloses a two-stage oil cylinder locking device used for a sleeve type oil cylinder. The two-stage oil cylinder locking device comprises a mechanical locking device arranged on a first-stage oil cylinder end cover, and a locking sleeve arranged on a second-stage oil cylinder piston rod. The mechanical locking device comprises the first-stage end cover, anti-rotation pins, a second-stage end cover and an outer locking cover used for limiting axial stretching of the first-stage oil cylinder, wherein the end portion of the second-stage oil cylinder piston rod is sleeved with the second-stage end cover, the end portion of a first-stage piston rod is sleeved with the first-stage end cover, the outer locking cover is connected with the first-stage end cover through the anti-rotation pins and arranged on the axial end portion of the second-stage end cover, and the locking sleeve is in interference fit with a cylinder barrel of a second-stage oil cylinder. The second-stage oil cylinder locking device is of a two-stage internal locking structure which allows the two-stage oil cylinder to be locked in any position and a first-stage oil cylinder to be locked in a single position, namely, the first-stage oil cylinder is recycled in place. The two-stage oil cylinder has the same functions with an ordinary two-stage oil cylinder under the unlocked state, and is convenient to unlock, easy to operate and reliable to use.
Description
Technical field
The utility model relates to a kind of locking device of hydraulic jack, particularly relates to a kind of two-stage oil cylinder locking device for telescoping cylinder.
Background technique
Engineering machinery, special vehicle field, need oil cylinder can realize arbitrary position locking in stroke range in the market, compact structure, and mounting distance multistage suit oil cylinder short and that arbitrary position can be locked in oil cylinder stroke is significant for actual production.
Summary of the invention
Technical problem to be solved in the utility model is to provide a kind of two-stage oil cylinder locking device for telescoping cylinder, after one-level cylinder barrel reclaims, lock the arbitrary position that secondary cylinder barrel can be realized in stroke range by the lock sleeve on piston rod and secondary cylinder barrel interference fit, and the problem that installing space is limited, have simple to operate, service-strong feature.
The technical solution adopted in the utility model is a kind of two-stage oil cylinder locking device for telescoping cylinder, comprise and be located at the mechanical locking device at primary oil cylinder end cap place and be located at the lock sleeve on two-level oil cylinder's piston rod, described mechanical locking device comprises one-level end cap, stop pin, the outer locking closure that secondary end cap and restriction one-level oil cylinder axially stretch out, described secondary end cap is set in two-level oil cylinder's piston rod boom end, described one-level end cap is set in first stage piston bar boom end, described outer locking closure is connected and is arranged on the axial end portion of secondary end cap by stop pin with one-level end cap, the cylinder barrel interference fit of described lock sleeve and described two-level oil cylinder.
Preferably, described outer locking closure inner annular body is provided with internal tooth, and secondary end cap outer ring-like body is provided with the external tooth of the rotation engaging corresponding with outer locking closure internal tooth.
The beneficial effects of the utility model are can realize two-level oil cylinder to lock at an arbitrary position, and one-level oil cylinder is at the two-stage locked hydraulic cylinder of single position locking.Two-level oil cylinder is as good as with common secondary cylinder function under released state, and convenient for unlocking is simple to operate, uses reliable.
Accompanying drawing explanation
Fig. 1 is two-stage oil cylinder locking device schematic diagram;
Fig. 2 is one-level oil cylinder unlocking condition schematic diagram;
Fig. 3 is one-level oil cylinder locking state schematic diagram.
Embodiment
Below in conjunction with drawings and Examples, the utility model is further illustrated.
As shown in Figures 1 to 3,1 is one-level cylinder barrel, and 2 is first stage piston bar, and 3 is lock sleeve, 4 is second piston rod, and 5 is secondary cylinder barrel, and 6 is one-level end cap, and 7 is stop pin, 8 is secondary end cap, and 9 is outer locking closure, 10 internal tooths that cover for external lock, and 11 is the external tooth on secondary end cap.
Locking device of the present utility model comprise be located at primary oil cylinder end cap place mechanical locking device and in be located at the lock sleeve 3 of two-level oil cylinder, mechanical locking device comprises the outer locking closure 9 that one-level end cap 6, stop pin 7, secondary end cap 8 and restriction one-level oil cylinder axially stretch out, secondary end cap 8 is set in two-level oil cylinder's piston rod 4 boom ends, one-level end cap 6 is set in first stage piston bar 2 boom ends, outer locking closure 9 is connected and is arranged on the axial end portion of secondary end cap 8 by stop pin 7 with one-level end cap 6, lock sleeve 3 and secondary cylinder barrel 5 interference fit.
Lock sleeve 3 is located on piston rod 4, and lock sleeve 3 is interference fit with secondary cylinder barrel 5.Interior during without pressure oil when lock sleeve 3, lock sleeve 3 is tightly embraced with secondary cylinder barrel 5, is locking state; When lock sleeve 3 passes into pressure oil, secondary cylinder barrel 5 is strutted by pressure oil, between lock sleeve 3 and secondary cylinder barrel 5, forms gap, and piston rod 4 can unrestricted motion.
Pull out the stop pin 7 that connects one-level end cap 6 and outer locking closure 9, rotate outer locking closure 9, internal tooth 10 on outer locking closure 9 staggers with the external tooth 11 on secondary end cap 8, under the effect of pressure oil, external tooth on secondary end cap 8, through the perforation between outer locking closure 9 internal tooths 10, drives first stage piston bar under the effect of pressure oil, stretch out or reclaim simultaneously; In first stage piston bar motion, stretch out together with the secondary cylinder barrel 5 being fixed together with first stage piston bar.The first stage piston bar Hou，Xiang two-level oil cylinder oil circuit control fuel feeding to the end that moves, two-level oil cylinder unblanks, and two-level oil cylinder's piston rod stretches out or reclaims, and one-level, two-level oil cylinder's piston rod sequentially stretch out like this, and secondary, primary oil cylinder piston rod can sequentially reclaim.After primary oil cylinder piston rod reclaims completely, rotate outer locking closure 9, the internal tooth 10 on outer locking closure 9 is fitted with the external tooth 11 of secondary end cap 8, and stop pin 7 is inserted to one-level end caps 6, now one-level oil cylinder is locking state, after locking, one-level oil cylinder can not stretch out.One-level oil cylinder locking Hou，Xiang two-level oil cylinder oil circuit control fuel feeding, two-level oil cylinder's piston rod 4 is realized and is stretched out and regain under the effect of pressure oil.If two-level oil cylinder's oil circuit control decompression is off-load, two-level oil cylinder can lock the arbitrary position in secondary stroke range.
Claims (2)
1. the two-stage oil cylinder locking device for telescoping cylinder, it is characterized in that: comprise and be located at the mechanical locking device at primary oil cylinder end cap place and be arranged at the lock sleeve (3) on two-level oil cylinder's piston rod (4), described mechanical locking device comprises one-level end cap (6), stop pin (7), the outer locking closure (9) that secondary end cap (8) and restriction one-level oil cylinder axially stretch out, described secondary end cap (8) is set in two-level oil cylinder's piston rod (4) boom end, described one-level end cap (6) is set in first stage piston bar (2) boom end, described outer locking closure (9) is connected and is arranged on the axial end portion of secondary end cap (8) by stop pin (7) with one-level end cap (6), described lock sleeve (3) and described secondary cylinder barrel (5) interference fit.
2. two-stage oil cylinder locking device according to claim 1, is characterized in that: described outer locking closure (9) is provided with internal tooth (10), and secondary end cap (8) is provided with the external tooth (11) of the rotation engaging corresponding with outer locking closure internal tooth.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320548074.XU CN203453189U (en) | 2013-09-04 | 2013-09-04 | Two-stage oil cylinder locking device used for sleeve type oil cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320548074.XU CN203453189U (en) | 2013-09-04 | 2013-09-04 | Two-stage oil cylinder locking device used for sleeve type oil cylinder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203453189U true CN203453189U (en) | 2014-02-26 |
Family
ID=50133068
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320548074.XU Expired - Lifetime CN203453189U (en) | 2013-09-04 | 2013-09-04 | Two-stage oil cylinder locking device used for sleeve type oil cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203453189U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108518381A (en) * | 2018-06-11 | 2018-09-11 | 江苏万川高压电气有限公司 | A kind of tight boosting hydraulic cylinder of servo-actuated self-locking |
| CN117927532A (en) * | 2024-03-25 | 2024-04-26 | 山东星辉液压设备有限公司 | Expansion cylinder holding pole self-locking multi-stage hydraulic cylinder |
-
2013
- 2013-09-04 CN CN201320548074.XU patent/CN203453189U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108518381A (en) * | 2018-06-11 | 2018-09-11 | 江苏万川高压电气有限公司 | A kind of tight boosting hydraulic cylinder of servo-actuated self-locking |
| CN108518381B (en) * | 2018-06-11 | 2019-09-27 | 江苏万川液压机械设备有限公司 | A kind of tight boosting hydraulic cylinder of servo-actuated self-locking |
| CN117927532A (en) * | 2024-03-25 | 2024-04-26 | 山东星辉液压设备有限公司 | Expansion cylinder holding pole self-locking multi-stage hydraulic cylinder |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140226 |