CN104088853A - Elastic clamping claw withdrawing type closed automatic locking mechanism for hydraulic cylinder - Google Patents
Elastic clamping claw withdrawing type closed automatic locking mechanism for hydraulic cylinder Download PDFInfo
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- CN104088853A CN104088853A CN201410288311.2A CN201410288311A CN104088853A CN 104088853 A CN104088853 A CN 104088853A CN 201410288311 A CN201410288311 A CN 201410288311A CN 104088853 A CN104088853 A CN 104088853A
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- lock tube
- elasticity
- claw
- cylinder cover
- hydraulic cylinder
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Abstract
The invention belongs to the field of hydraulic cylinders and particularly discloses an elastic clamping claw withdrawing type closed automatic locking mechanism for a hydraulic cylinder. The automatic locking mechanism is simple in appearance and compact in structure, no additional operation mechanism is required, single operation action is not required, and the automatic locking mechanism can achieve locking and unlocking action when the hydraulic cylinder achieves the stretching action. The mechanism comprises a cylinder barrel, a rear cylinder cover, a piston rod, a piston, an elastic outer clamping claw and an inner conical guide locking sleeve. The cylinder barrel is connected with the rear cylinder cover through threads, the outer diameter of the cylinder barrel is in clearance fit with the inner wall of the rear cylinder cover, the piston rod is movably arranged in the cylinder barrel, the piston sleeves the front end of the piston rod, the elastic outer clamping claw is connected with the front end of the piston through threads, the inner conical guide locking sleeve is pressed on a rear cylinder cover step by the cylinder barrel, and the outer diameter of the inner conical guide locking sleeve is in clearance fit with the inner diameter of the rear cylinder cover. Hydraulic cylinder withdrawing locking is achieved through interlocking of the outer clamping step of the elastic clamping claw and the inner conical guide locking sleeve.
Description
Technical field
The invention belongs to oil hydraulic cylinder field, particularly relate to elastic card claw retractably enclosed automatic locking mechanism for a kind of oil hydraulic cylinder, be mainly used in military hardware, civil engineering vehicle band while carrying, parking locking reliably and with long-term under state and transport state, and there will not be in the hydraulic jack of equipping the phenomenons such as expansion, displacement on car.
Background technique
In national economy such as national defence field, engineering, mine, metallurgical machinery and hydraulic engineerings, produce in each field, (cylinder is consistent with hydraulic cylinder works principle with elastic card claw retractably enclosed automatic locking mechanism for oil hydraulic cylinder, content is called for short oil hydraulic cylinder below) as a kind of executive component that drives and bear large load, when usually requiring in work and not working, there is locking and positioning function, while working, support long-term and stably outer load and non-displacement requires oil hydraulic cylinder when stretching out, to have lock function; When not working, for preventing that tensioning mechanism from surprisingly launching, require oil hydraulic cylinder when regaining, to have lock function.
With regard to having of the current extensive use of retracted state locking framework: to regain oil hydraulic cylinder outside, the movable device that will lock and vehicle securing mechanism are locked with mechanical connection, this mode guarantee locked part reliably, fixing safely, shortcoming is between locked part and fixed mechanism, to increase connection set, and increase machine adds difficulty simultaneously.It is another kind of for hydraulic pressure block of valve cut-out path is installed in system, confining pressure oil gas chamber seal fluid is realized the mode of oil hydraulic cylinder locking, because sealing technique allows to exist certain leakage rate, can not meet locking operating mode needs steady in a long-term, do not meet the occasion high to safety requirement, ordinary circumstance need not.
Other,, as screw piston rod locking form, requires Yi Ge spcific power mechanism and power source in each root oil hydraulic cylinder, and spare system is complicated, mechanism is huge; It is simple that conical surface friction compresses locking framework, but conical surface compression reaction thrust is limited; Interference locking requires very strict to magnitude of interference, between being controlled at several, simultaneously to product raw material, mechanical processing technique, heat treatedly require corresponding raising, cause difficulty of processing large, 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 common oil hydraulic cylinder, compact structure, without unnecessary control port, lock function is reliably rapid, do not need additional operations mechanism, act of operation separately, oil hydraulic cylinder, when realizing expanding-contracting action, is realized the elastic card claw retractably enclosed automatic locking mechanism for oil hydraulic cylinder of locking and release action.
In order to solve the problems of the technologies described above, the technical solution used in the present invention is: elastic card claw retractably enclosed automatic locking mechanism for oil hydraulic cylinder, comprise cylinder barrel, back cylinder cover, piston rod, piston, the outer claw of elasticity and inner cone guiding 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 sleeve 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 guiding lock tube is pressed on back cylinder cover step by cylinder barrel, inner cone guiding lock tube external diameter and back cylinder cover internal diameter Spielpassung,
On the external diameter of the outer claw of described elasticity end, be provided with the outer clamping step that both sides are inclined-plane, the convenient turnover of skew back face inner cone guiding lock tube, opposite side inclined-plane and the locking of inner cone guide lock cover; The middle part of described inner cone guiding lock tube is provided with the outer claw of elasticity by hole, and the outer claw of described elasticity is provided with inclined-plane by the two ends in hole, and a skew back face is used for to the outer claw guiding of described elasticity, the outer claw locking of opposite side inclined-plane and elasticity.
Preferably, also comprise 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 integral body is stepped, in locking lock tube one end inner hole sleeve be contained on described spring, the other end ladder surface contacts with inner cone guide lock cover, both ends of the spring is pressed on interior locking lock tube and spring stack respectively the lead bottom of lock tube and back cylinder cover of inner cone, described nut is threaded with spring stack, for blocking interior locking lock tube, has limited spring and stretchs out.
Preferably, described interior locking lock tube enters elasticity and is provided with importing inclined-plane in the end of claw outward.
Preferably, a side of the outer clamping step of the outer claw of described elasticity is provided with axial grooving.
Preferably, on described back cylinder cover, near interior locking lock tube installation step outer radial, ventilation screw is set, described ventilation screw is used for connecting air-strainer.
The present invention compared with prior art has following beneficial effect.
The first, the present invention, by the lockable mechanism of the part compositions such as the outer claw of elasticity and inner cone guiding lock tube and interior locking lock tube, can realize automatically locking and release, is mainly used in oil hydraulic cylinder retracted state and retracted state requirement while having larger tension load behavior.Secondary (enclosed) lock function makes locking more reliable.
The second, the present invention does not need only operating element and act of operation realization to automatically lock and release; Reasonable arrangement structure, the lockable mechanism of the outer claw of elasticity only increases the function of oil hydraulic cylinder, but does not affect the form structure of oil hydraulic cylinder, makes oil hydraulic cylinder form structure compact, and simple to operate, mounting interface is reasonable; After locking, do not need work fluid, hydraulic pump source can quit work, and the operating time of oil sources dwindles, and has extended the operating life of system, has saved the energy simultaneously, has reduced noise.Cylinder device has omitted hydraulic lock, avoids the soft leg phenomenon that produces due to hydraulic lock seepage, and oil circuit is simple.
Three, the present invention efficiently solves that the locking occurring in current cylinder ends mechanical locking mechanism is unreliable, locking framework and oil hydraulic cylinder manufacture difficulty, the problems such as working life is low, met there has been to requirement in space, the application demand to the strict occasion of locking reliability requirement.
Accompanying drawing explanation
Below in conjunction with accompanying drawing, the present invention will be further described in detail.
Fig. 1 is 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 the outer claw of elasticity, and 6 is inner cone guiding lock tube, and 7 is interior locking lock tube, and 8 is spring, and 9 is spring stack, and 10 is nut.
Embodiment
As shown in Figure 1, elastic card claw retractably enclosed automatic locking mechanism for oil hydraulic cylinder, comprise cylinder barrel 1, back cylinder cover 2, piston rod 3, piston 4, the outer claw 5 of elasticity and inner cone guiding 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 gaps, described piston rod 3 is movably arranged in cylinder barrel 1, piston 4 is sleeved on piston rod 3 front ends, the outer claw 5 of described elasticity is threaded in the front end of described piston 4, the outer claw 5 of elasticity stretches and does axial motion with piston rod 3 with piston 4, described inner cone guiding lock tube 6 is pressed on back cylinder cover 2 steps by cylinder barrel 1, inner cone guiding lock tube 6 is without axial motion, external diameter and back cylinder cover 2 internal diameter Spielpassung,
On the external diameter of the outer claw of described elasticity 5 ends, be provided with the outer clamping step that both sides are inclined-plane, the convenient turnover of skew back face inner cone guiding lock tube 6, opposite side inclined-plane and 6 lockings of inner cone guiding lock tube; The middle part of described inner cone guiding lock tube 6 is provided with the outer claw 5 of elasticity by hole, and the outer claw 5 of described elasticity is provided with inclined-plane by the two ends in hole, and a skew back face is used for to outer claw 5 guiding of described elasticity, outer claw 5 lockings of opposite side inclined-plane and elasticity.Inclined-plane, the outer outer clamping boss one end of claw 5 of elasticity is used for and 6 lockings of inner cone guiding lock tube, and it is easier that the other end inclined-plane makes it enter inner cone guiding lock tube 6, protects the inner cone guiding lock tube 6 guiding conical surfaces simultaneously.Pawl valve structure makes the outer claw 5 of elasticity when work, draw in and to reset, and realizes locking and unlocking function.
Preferably, also comprise 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 steps, described interior locking lock tube 7 integral body are stepped, interior locking lock tube 7 one end inner hole sleeves are contained on described spring 8, the other end ladder surface contacts with inner cone guiding lock tube 6, spring 8 two ends are pressed on interior locking lock tube 7 and spring stack 9 respectively the bottom of inner cone guiding lock tube 6 and back cylinder cover 2, described nut 10 is threaded with spring stack 9, being used for blocking interior locking lock tube 7 has limited spring 8 and has stretched out, pass through interior locking lock tube 7 by spring stack 9 axial restraints simultaneously.Spring stack 9 is one end and back cylinder cover 2 concave surface Spielpassung radially, and the other end and interior locking lock tube 7 Spielpassung are fixed, radially fixing.Interior locking lock tube 7 one end cylinders are used for preventing the rear unexpected contraction of outer claw 5 locking of elasticity, and it is easy that inclined-plane, ingress makes to enter the outer claw 5 of elasticity.The other end endoporus is used for placing spring 8, gives spring 8 flexible guiding, and prevents from being out of shape in spring 8 telescopic process.
Preferably, described interior locking lock tube 7 enters elasticity and is provided with importing inclined-plane in the end of claw 5 outward.Importing inclined-plane facilitates the outer claw 5 of elasticity to enter.
Preferably, a side of the outer clamping step of the outer claw 5 of described elasticity is provided with axial grooving.Axially grooving guarantees that the outer claw 5 of elasticity has one radial contraction.
Preferably, on described back cylinder cover 2, near interior locking lock tube 7 installation step outer radials, ventilation screw is set, described ventilation screw is used for connecting air-strainer.
By piston 4, cylinder barrel 1, back cylinder cover 2, piston rod 3, form rodless cavity, front end housing (not shown), cylinder barrel 1, piston 4, piston rod 3 form rod chamber.
Working procedure of the present invention is: oil hydraulic cylinder rod chamber is to pressure oil, piston rod 3 is recovered to locking bit, the outer claw 5 of elasticity enters inner cone guiding lock tube 6, the outer clamping step of the outer claw 5 of elasticity and the 6 inclined-plane lockings of inner cone guiding lock tube, hydraulic cylinder pressure relief now, interior locking lock tube 7, under spring 8 power effects, enters outer claw 5 inner chambers of elasticity, prevent the outer claw 5 of elasticity unexpected disengagement from inner cone guiding lock tube 6, cause lockout failure.While unblanking, oil hydraulic cylinder rodless cavity is to pressure oil, interior locking lock tube 7 Compress Springs 8, until interior locking lock tube 7 leaves outer claw 5 inner chambers of elasticity, oil hydraulic cylinder possesses the condition of unblanking, when oil pressure is enough, the outer claw 5 of elasticity is thrown off from inner cone guiding lock tube 6, and piston rod 3 starts to stretch out.
By reference to the accompanying drawings embodiments of the invention are explained in detail above, but the present invention is not limited to above-described embodiment, in the ken possessing those of ordinary skills, can also under the prerequisite that does not depart from aim of the present invention, makes various variations.
Claims (5)
1. elastic card claw retractably enclosed automatic locking mechanism for oil hydraulic cylinder, it is characterized in that: comprise cylinder barrel (1), back cylinder cover (2), piston rod (3), piston (4), the outer claw (5) of elasticity and inner cone guiding 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 guiding lock tube (6) is pressed on back cylinder cover (2) step by cylinder barrel (1), inner cone guiding lock tube (6) external diameter and back cylinder cover (2) internal diameter Spielpassung,
On the external diameter of the outer claw (5) of described elasticity end, be provided with the outer clamping step that both sides are inclined-plane, the convenient turnover of skew back face inner cone guiding lock tube (6), opposite side inclined-plane and inner cone guiding 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, one skew back face is for leading to the outer claw (5) of described elasticity, and the outer claw (5) of opposite side inclined-plane and elasticity locks.
2. elastic card claw retractably enclosed automatic locking mechanism for oil hydraulic cylinder according to claim 1, it is characterized in that: also comprise 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) integral body is stepped, interior locking lock tube (7) one end inner hole sleeve is contained on described spring (8), the other end ladder surface contacts with inner cone guiding lock tube (6), spring (8) two ends are pressed on interior locking lock tube (7) and spring stack (9) respectively the bottom of inner cone guiding lock tube (6) and back cylinder cover (2), described nut (10) is threaded with spring stack (9), being used for blocking interior locking lock tube (7) has limited spring (8) and has stretched out.
3. elastic card claw retractably enclosed automatic locking mechanism for oil hydraulic cylinder according to claim 2, is characterized in that: the end that described interior locking lock tube (7) enters the outer claw (5) of elasticity is provided with importing inclined-plane.
4. elastic card claw retractably enclosed automatic locking mechanism for oil hydraulic cylinder according to claim 1, is characterized in that: a side of the outer clamping step of the outer claw (5) of described elasticity is provided with axial grooving.
5. elastic card claw retractably enclosed automatic locking mechanism for oil hydraulic cylinder 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-strainer.
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 |
Applications Claiming Priority (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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| Publication Number | Publication Date |
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| CN104088853A true CN104088853A (en) | 2014-10-08 |
| CN104088853B CN104088853B (en) | 2016-08-17 |
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| Application Number | Title | Priority Date | Filing Date |
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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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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104632780A (en) * | 2014-12-05 | 2015-05-20 | 四川凌峰航空液压机械有限公司 | U-shaped opening clamping ring lock for actuator cylinder |
| CN110039327A (en) * | 2019-05-23 | 2019-07-23 | 江苏卓联精密机械有限公司 | Angle head connects quick firm organization |
| DE102021114492A1 (en) | 2021-06-07 | 2022-12-08 | Schaeffler Technologies AG & Co. KG | Operating actuator for a parking lock |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1538344A2 (en) * | 2003-12-04 | 2005-06-08 | Neumeister Hydraulik GmbH | Locking cylinder |
| CN101858371A (en) * | 2010-05-25 | 2010-10-13 | 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 |
| CN102367823A (en) * | 2011-11-03 | 2012-03-07 | 中航飞机起落架有限责任公司 | Automatically reversible air cylinder device with built-in mechanical lock |
| EP2636929A2 (en) * | 2012-03-05 | 2013-09-11 | 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 |
-
2014
- 2014-06-25 CN CN201410288311.2A patent/CN104088853B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1538344A2 (en) * | 2003-12-04 | 2005-06-08 | Neumeister Hydraulik GmbH | Locking cylinder |
| CN101858371A (en) * | 2010-05-25 | 2010-10-13 | 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 |
| CN102367823A (en) * | 2011-11-03 | 2012-03-07 | 中航飞机起落架有限责任公司 | Automatically reversible air cylinder device with built-in mechanical lock |
| EP2636929A2 (en) * | 2012-03-05 | 2013-09-11 | 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 |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104632780A (en) * | 2014-12-05 | 2015-05-20 | 四川凌峰航空液压机械有限公司 | U-shaped opening clamping ring lock for actuator cylinder |
| CN110039327A (en) * | 2019-05-23 | 2019-07-23 | 江苏卓联精密机械有限公司 | Angle head connects quick firm organization |
| 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 |
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| Publication number | Publication date |
|---|---|
| CN104088853B (en) | 2016-08-17 |
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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 |