CN104088853B - Hydraulic cylinder elastic card claw retractably enclosed automatic locking mechanism - Google Patents
Hydraulic cylinder elastic card claw retractably enclosed automatic locking mechanism Download PDFInfo
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- CN104088853B CN104088853B CN201410288311.2A CN201410288311A CN104088853B CN 104088853 B CN104088853 B CN 104088853B CN 201410288311 A CN201410288311 A CN 201410288311A CN 104088853 B CN104088853 B CN 104088853B
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Abstract
The invention belongs to hydraulic cylinder field, particularly open a kind of hydraulic cylinder elastic card claw retractably enclosed automatic locking mechanism；It is succinct that technical problem to be solved is to provide a kind of profile, compact conformation, it is not necessary to additional operations mechanism, need not individually operated action, hydraulic cylinder is while realizing expanding-contracting action, it is achieved locking and the hydraulic cylinder elastic card claw retractably enclosed automatic locking mechanism of unlocking motion；Lock tube is guided including cylinder barrel, back cylinder cover, piston rod, piston, elastic outer claw and inner cone, cylinder barrel and back cylinder cover are threaded, cylinder barrel external diameter and back cylinder cover inwall gap, piston rod is movably arranged in cylinder barrel, piston bush is contained in piston rod front end, elastic outer claw is threaded in the front end of piston, and inner cone guides lock tube and is pressed on back cylinder cover step by cylinder barrel, and inner cone guides lock tube external diameter and back cylinder cover internal diameter matched in clearance；Guide lock tube by the outer clamping step of elastic card claw and inner cone and mutually lock locking when implementation hydraulic cylinder is regained.
Description
Technical field
The invention belongs to hydraulic cylinder field, particularly relate to a kind of hydraulic cylinder elastic card claw retractably enclosed automatic locking mechanism, when being mainly used in military hardware, civil engineering vehicle band load, lock reliably and with long-term under parked state with travel position, without occurring equipping on car in the hydraulic jack of the phenomenons such as expansion, displacement.
Background technology
In the national economy such as national defence, engineering, mine, metallurgical machinery and hydraulic engineering produce each field, (cylinder is consistent with hydraulic cylinder works principle for hydraulic cylinder elastic card claw retractably enclosed automatic locking mechanism, content is called for short hydraulic cylinder below) as a kind of executive component driving and bear big load, often require that with when not working, there is locking positioning function in work, the i.e. operating time time stably supports outer load and non-displacement, it is desirable to hydraulic cylinder has lock function when stretching out；When not working for preventing tensioning mechanism from surprisingly launching, it is desirable to hydraulic cylinder has lock function when regaining.
With regard to having that retracted state locking mechanism is widely used at present: regaining outside hydraulic cylinder, by movable device to be locked with vehicle securing mechanism with being mechanically connected locking, this mode guarantees that locked portion is reliable, securely fixes, shortcoming is to need to increase attachment means between locked portion and fixed mechanism, increases machine simultaneously and adds difficulty.Another kind of for installing hydraulic valve lock cut-out path in systems, confining pressure oil gas chamber seals liquid and realizes the mode of hydraulic cylinder locking, owing to Sealing Technology allows to there is certain leakage rate, locking operating mode needs steady in a long-term can not be met, not meeting the occasion high to safety requirements, ordinary circumstance need not.
Other locks form such as screw piston rod, requires a spcific power mechanism and power source in each hydraulic cylinder, and spare system is complicated, mechanism is huge；It is simple that conical surface friction compresses locking mechanism, but conical surface compression propulsive thrust is limited；The magnitude of interference is required very strict by interference locking, controls between several, improves product raw material, mechanical processing technique, the requirement of heat treatment accordingly simultaneously, causes difficulty of processing big, and yield rate is low.
Summary of the invention
The present invention overcomes the deficiency that prior art exists, technical problem to be solved is for providing a kind of profile succinct, consistent with Normal hydraulic cylinder, compact conformation, without unnecessary control port, lock function is the rapidest, need not additional operations mechanism, need not individually operated action, hydraulic cylinder is while realizing expanding-contracting action, it is achieved locking and the hydraulic cylinder elastic card claw retractably enclosed automatic locking mechanism of unlocking motion.
In order to solve above-mentioned technical problem, the technical solution used in the present invention is: hydraulic cylinder elastic card claw retractably enclosed automatic locking mechanism, including cylinder barrel, back cylinder cover, piston rod, piston, elastic outer claw and inner cone guide lock tube, described cylinder barrel and back cylinder cover are threaded, cylinder barrel external diameter and back cylinder cover inwall gap, described piston rod is movably arranged in cylinder barrel, piston bush is contained in piston rod front end, the outer claw of described elasticity is threaded in the front end of described piston, described inner cone guides lock tube and is pressed on back cylinder cover step by cylinder barrel, inner cone guides lock tube external diameter and back cylinder cover internal diameter matched in clearance；
Being provided with, on the external diameter of the outer clawed end portions of described elasticity, the outer clamping step that both sides are inclined-plane, inclined-plane, side convenient turnover inner cone guides lock tube, opposite side inclined-plane and the set locking of inner cone guide lock；The middle part of described inner cone guiding lock tube is provided with the outer claw of elasticity, by claw outside hole, described elasticity, the two ends in hole is provided with inclined-plane, and inclined-plane, side is used for guiding to claw outside described elasticity, opposite side inclined-plane and jaws outside elasticity.
Preferably, also include interior locking lock tube, spring, spring stack and nut, described spring stack is arranged in back cylinder cover installation step, described interior locking lock tube is the most stepped, interior locking lock tube one end inner hole sleeve is contained on described spring, and other end cascaded surface contacts with inner cone guide lock set, and interior locking lock tube and spring stack are pressed on inner cone and guide lock tube and the bottom of back cylinder cover by both ends of the spring respectively, described nut is threadeded with spring stack, is used for blocking interior locking lock tube and limits spring and stretch out.
Preferably, the end of the elastic outer claw of described interior locking lock tube entrance is provided with importing inclined-plane.
Preferably, the side of the outer clamping step of the outer claw of described elasticity is provided with axial grooving.
Preferably, described back cylinder cover arranging ventilation screw near interior locking lock tube installation step outer radial, described ventilation screw is used for connecting air filter.
The present invention compared with prior art has the advantages that.
The first, the present invention guides the lockable mechanism of the part compositions such as lock tube and interior locking lock tube by elastic outer claw and inner cone, it is possible to realize locking automatically and unblock, is mainly used in hydraulic cylinder retracted state and time retracted state requirement has bigger tension load behavior.Secondary (enclosed) lock function makes locking more reliable.
The second, the present invention need not the locking automatic with operational motion realization of only operating element and unlocks；Reasonable arrangement structure, the lockable mechanism of elastic outer claw only increases the function of hydraulic cylinder, but does not affect the contour structures of hydraulic cylinder, makes hydraulic cylinder contour structures compact, and simple to operate, mounting interface is reasonable；Need not work fluid after locking, hydraulic pump source can quit work, and the working time of oil sources reduces, and extends the working life of system, has saved the energy simultaneously, decreased noise.Cylinder device eliminates hydraulic lock, it is to avoid soft leg phenomenon produced by hydraulic lock seepage, oil circuit is simple.
3rd, the locking occurred during the present invention efficiently solves current cylinder ends mechanical locking mechanism is unreliable, locking mechanism manufactures difficulty with hydraulic cylinder, the problems such as service life is low, meet and space is required, the application demand to the locking strict occasion of reliability requirement.
Accompanying drawing explanation
The present invention will be further described in detail below in conjunction with the accompanying drawings.
Fig. 1 is the structural representation of the present invention.
In figure: 1 is cylinder barrel, 2 is back cylinder cover, and 3 is piston rod, and 4 is piston, and 5 is elastic outer claw, and 6 guide lock tube for inner cone, and 7 is interior locking lock tube, and 8 is spring, and 9 is spring stack, and 10 is nut.
Detailed description of the invention
As shown in Figure 1, hydraulic cylinder elastic card claw retractably enclosed automatic locking mechanism, including cylinder barrel 1, back cylinder cover 2, piston rod 3, piston 4, elastic outer claw 5 and inner cone guide lock tube 6, described cylinder barrel 1 and back cylinder cover 2 are threaded, cylinder barrel 1 external diameter and back cylinder cover 2 inwall gap, described piston rod 3 is movably arranged in cylinder barrel 1, piston 4 is sleeved on piston rod 3 front end, the outer claw 5 of described elasticity is threaded in the front end of described piston 4, elastic outer claw 5 makees axially-movable with piston 4 with piston rod 3 is flexible, described inner cone guides lock tube 6 and is pressed on back cylinder cover 2 step by cylinder barrel 1, inner cone guides lock tube 6 without axially-movable, external diameter and back cylinder cover 2 internal diameter matched in clearance；
Being provided with, on the external diameter of outer claw 5 end of described elasticity, the outer clamping step that both sides are inclined-plane, inclined-plane, side convenient turnover inner cone guides lock tube 6, and opposite side inclined-plane and inner cone guide lock tube 6 and lock；The middle part of described inner cone guiding lock tube 6 is provided with the outer claw 5 of elasticity, by claw 5 outside hole, described elasticity, the two ends in hole is provided with inclined-plane, and inclined-plane, side is for guiding to claw 5 outside described elasticity, and opposite side inclined-plane claw 5 outer with elasticity locks.Elastic inclined-plane, outer claw 5 outer clamping boss one end is used for guiding lock tube 6 with inner cone and locks, and other end inclined-plane makes it into inner cone guiding lock tube 6 and is easier to, and protection inner cone guides lock tube 6 and guides the conical surface simultaneously.Pawl valve structure makes the outer claw 5 of elasticity can operationally draw reset in, it is achieved locking and unlocking function.
Preferably, also include interior locking lock tube 7, spring 8, spring stack 9 and nut 10, described spring stack 9 is arranged in back cylinder cover 2 installation step, described interior locking lock tube 7 is the most stepped, interior locking lock tube 7 one end inner hole sleeve is contained on described spring 8, other end cascaded surface guides lock tube 6 with inner cone and contacts, interior locking lock tube 7 and spring stack 9 are pressed on inner cone and guide lock tube 6 and the bottom of back cylinder cover 2 by spring 8 two ends respectively, described nut 10 is threadeded with spring stack 9, limit spring 8 stretch out for blocking interior locking lock tube 7, simultaneously by interior locking lock tube 7 by spring stack 9 axial restraint.Spring stack 9 radially one end and back cylinder cover 2 concave surface matched in clearance, the other end is fixed with interior locking lock tube 7 matched in clearance, radially fixed.Interior locking lock tube 7 one end cylinder is unexpected after being used for preventing elasticity outer claw 5 locking to be shunk, and inclined-plane, porch makes claw 5 outside entrance elasticity easy.Other end endoporus is used for placing spring 8, guides to spring 8 is flexible, and prevents from deforming in spring 8 telescopic process.
Preferably, outside described interior locking lock tube 7 enters elasticity, the end of claw 5 is provided with importing inclined-plane.Import the convenient elastic outer claw 5 in inclined-plane to enter.
Preferably, the side of the outer clamping step of the outer claw 5 of described elasticity is provided with axial grooving.Axially grooving ensures that elastic outer claw 5 has the radial contraction of.
Preferably, described back cylinder cover 2 arranging ventilation screw near interior locking lock tube 7 installation step outer radial, described ventilation screw is used for connecting air filter.
Being formed rodless cavity by piston 4, cylinder barrel 1, back cylinder cover 2, piston rod 3, front end housing (not shown), cylinder barrel 1, piston 4, piston rod 3 form rod chamber.
The work process of the present invention is: hydraulic cylinder rod chamber is to pressure oil, piston rod 3 is recovered to locking bit, elastic outer claw 5 enters inner cone and guides lock tube 6, the outer clamping step of elastic outer claw 5 and inner cone guide the locking of lock tube 6 inclined-plane, now hydraulic cylinder pressure relief, interior locking lock tube 7, under spring 8 power effect, enters elastic outer claw 5 inner chamber, prevent the outer claw 5 of elasticity from guiding unexpected lock tube 6 disengagement from inner cone, cause lockout failure.When unblanking, hydraulic cylinder rodless cavity to pressure oil, interior locking lock tube 7 compression spring 8, until interior locking lock tube 7 leaves outer claw 5 inner chamber of elasticity, hydraulic cylinder possesses the condition of unblanking, when oil pressure is enough, elastic outer claw 5 guides lock tube 6 from inner cone and disengages, and piston rod 3 starts to stretch out.
Above in conjunction with accompanying drawing, embodiments of the invention are explained in detail, but the present invention is not limited to above-described embodiment, in the ken that those of ordinary skill in the art are possessed, it is also possible to various changes can be made on the premise of without departing from present inventive concept.
Claims (4)
1. hydraulic cylinder elastic card claw retractably enclosed automatic locking mechanism, it is characterized in that: include cylinder barrel (1), back cylinder cover (2), piston rod (3), piston (4), elastic outer claw (5) and inner cone guide lock tube (6), described cylinder barrel (1) and back cylinder cover (2) are threaded, cylinder barrel (1) external diameter and back cylinder cover (2) inwall gap, described piston rod (3) is movably arranged in cylinder barrel (1), piston (4) is sleeved on piston rod (3) front end, the outer claw (5) of described elasticity is threaded in the front end of described piston (4), described inner cone guides lock tube (6) and is pressed on back cylinder cover (2) step by cylinder barrel (1), inner cone guides lock tube (6) external diameter and back cylinder cover (2) internal diameter matched in clearance；
Being provided with, on the external diameter of outer claw (5) end of described elasticity, the outer clamping step that both sides are inclined-plane, inclined-plane, side convenient turnover inner cone guides lock tube (6), and opposite side inclined-plane and inner cone guide lock tube (6) locking；The middle part of described inner cone guiding lock tube (6) is provided with the outer claw (5) of elasticity and passes through hole, the outer claw (5) of described elasticity is provided with inclined-plane by the two ends in hole, inclined-plane, side is for described elasticity outer claw (5) guiding, claw (5) outer with the elasticity locking of opposite side inclined-plane；
Hydraulic cylinder elastic card claw retractably enclosed automatic locking mechanism also includes interior locking lock tube (7), spring (8), spring stack (9) and nut (10), described spring stack (9) is arranged in back cylinder cover (2) installation step, described interior locking lock tube (7) is the most stepped, interior locking lock tube (7) one end inner hole sleeve is contained on described spring (8), other end cascaded surface guides lock tube (6) with inner cone and contacts, interior locking lock tube (7) and spring stack (9) are pressed on inner cone and guide lock tube (6) and the bottom of back cylinder cover (2) by spring (8) two ends respectively, described nut (10) is threadeded with spring stack (9), limit spring (8) stretch out for blocking interior locking lock tube (7).
Hydraulic cylinder elastic card claw retractably enclosed automatic locking mechanism the most according to claim 1, it is characterised in that: described interior locking lock tube (7) enters the end of elastic outer claw (5) and is provided with importing inclined-plane.
Hydraulic cylinder elastic card claw retractably enclosed automatic locking mechanism the most according to claim 1, it is characterised in that: the side of the outer clamping step of the outer claw (5) of described elasticity is provided with axial grooving.
Hydraulic cylinder elastic card claw retractably enclosed automatic locking mechanism the most according to claim 2, it is characterized in that: described back cylinder cover (2) is upper arranges ventilation screw near interior locking lock tube (7) installation step outer radial, and described ventilation screw is used for connecting air filter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410288311.2A CN104088853B (en) | 2014-06-25 | 2014-06-25 | Hydraulic cylinder elastic card claw retractably enclosed automatic locking mechanism |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410288311.2A CN104088853B (en) | 2014-06-25 | 2014-06-25 | Hydraulic cylinder elastic card claw retractably enclosed automatic locking mechanism |
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| CN104088853A CN104088853A (en) | 2014-10-08 |
| CN104088853B true CN104088853B (en) | 2016-08-17 |
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| CN201410288311.2A Active CN104088853B (en) | 2014-06-25 | 2014-06-25 | Hydraulic cylinder elastic card claw retractably enclosed automatic locking mechanism |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104632780B (en) * | 2014-12-05 | 2016-08-24 | 四川凌峰航空液压机械有限公司 | Pressurized strut U-shaped slotted collar is locked |
| CN110039327B (en) * | 2019-05-23 | 2024-03-08 | 江苏卓联精密机械有限公司 | Rapid stabilizing mechanism for angle head connection |
| DE102021114492A1 (en) | 2021-06-07 | 2022-12-08 | Schaeffler Technologies AG & Co. KG | Operating actuator for a parking lock |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10356598B3 (en) * | 2003-12-04 | 2005-06-02 | Neumeister Hydraulik Gmbh | Locking cylinder for hydraulically actuated component has spindle axially movable relative to cylinder and fixed to support body |
| CN101858371B (en) * | 2010-05-25 | 2013-08-21 | 中航飞机起落架有限责任公司 | Actuator cylinder with in-built manual-operated emergent unlocking device |
| CN201671913U (en) * | 2010-05-25 | 2010-12-15 | 中航飞机起落架有限责任公司 | Actuator cylinder with built-in claw lock device |
| CN102367823B (en) * | 2011-11-03 | 2014-05-28 | 中航飞机起落架有限责任公司 | Automatically reversible air cylinder device with built-in mechanical lock |
| DE102012004157A1 (en) * | 2012-03-05 | 2013-09-05 | Svm Schultz Verwaltungs-Gmbh & Co. Kg | locking unit |
| CN204003787U (en) * | 2014-06-25 | 2014-12-10 | 长治清华机械厂 | Elastic card claw retractably enclosed automatic locking mechanism for a kind of oil hydraulic cylinder |
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Address after: No. 6 mailbox of Changzhi City, Shanxi Province, Shanxi Co-patentee after: China Academy of Launch Vehicle Technology Patentee after: Shanxi spaceflight Qinghua Equipment Co., Ltd. Address before: No. 6 mailbox of Changzhi City, Shanxi Province, Shanxi Co-patentee before: China Academy of Launch Vehicle Technology Patentee before: Qinghua Machinery Plant, Changzhi |