CN104088852B - Elastic card claw enclosed automatic locking mechanism for hydraulic cylinder - Google Patents

Elastic card claw enclosed automatic locking mechanism for hydraulic cylinder Download PDF

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Publication number
CN104088852B
CN104088852B CN201410288248.2A CN201410288248A CN104088852B CN 104088852 B CN104088852 B CN 104088852B CN 201410288248 A CN201410288248 A CN 201410288248A CN 104088852 B CN104088852 B CN 104088852B
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China
Prior art keywords
lock tube
claw
locking
elasticity
piston rod
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CN201410288248.2A
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Chinese (zh)
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CN104088852A (en
Inventor
武丽明
武向宇
杨护红
胡秀全
韩晓
马雷鹏
田海明
王浩
Original Assignee
长治清华机械厂
中国运载火箭技术研究院
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Priority to CN201410288248.2A priority Critical patent/CN104088852B/en
Publication of CN104088852A publication Critical patent/CN104088852A/en
Application granted granted Critical
Publication of CN104088852B publication Critical patent/CN104088852B/en

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Abstract

The invention belongs to hydraulic cylinder field, particularly disclose a kind of hydraulic cylinder elastic card claw enclosed automatic locking mechanism; Technical problem to be solved is for providing a kind of profile succinct, lock function is reliably rapid, does not need additional operations mechanism, separately operational motion, hydraulic cylinder, in realizing expanding-contracting action, is realized locking and the hydraulic cylinder of release action elastic card claw enclosed automatic locking mechanism; Comprise front end housing, cylinder barrel, back cylinder cover, piston rod, piston and lockable mechanism, described cylinder barrel is threaded with front end housing, back cylinder cover, the external diameter at cylinder barrel two ends and front end housing, back cylinder cover inwall matched in clearance, described piston rod entirety is stepped, piston rod is movably arranged in cylinder barrel through front end housing, described piston is connected with piston rod thread, and piston inner wall coordinates with piston rod small-end crest clearance; Described lockable mechanism comprises elastic card claw and guiding lock tube, and elastic card claw and guiding lock tube are mutually locked in that piston rod stretches out or play locking action when retracted state.

Description

Elastic card claw enclosed automatic locking mechanism for hydraulic cylinder
Technical field
The invention belongs to hydraulic cylinder field, particularly relate to a kind of hydraulic cylinder elastic card claw enclosed automatic locking mechanism, be mainly used in military hardware, civil engineering vehicle or other pumping source in the time of work and do not work but can lock reliably and with long-term, in the hydraulic jack without any soft leg phenomenon.
Background technology
Produce in each field in national economy such as national defence field, engineering, mine, metallurgical machinery and hydraulic engineerings, (cylinder is consistent with hydraulic cylinder works principle for hydraulic cylinder, content is called for short 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 positioning function, while work, support long-term and stably outer load and non-displacement requires hydraulic cylinder in the time stretching out, to have lock function; In the time not working, for preventing that tensioning mechanism from surprisingly launching, require hydraulic cylinder in the time regaining, to have lock function.
At present hydraulic cylinder locks and in most employing system, the hydraulic pressure block of valve is installed and is cut off path, confining pressure oil gas chamber seal fluid is realized locking, locking precision and reliability depend on the sealing of hydraulic lock and cylinder, and Sealing Technology allows to exist certain leakage rate, long-term work operating mode needs can not be met, the high occasion of precision and stability requirement can not be used for locking. In pipeline, need to increase the related valves locking element of having relatively high expectations simultaneously.
Just in the mechanical locking mechanism retrieving at present: outer plug pearl and additional compression lock set are decided to be manual locking; Screw piston rod is locked as automatic operation, but each root hydraulic cylinder requires a spcific power mechanism and power source, and spare system complexity, mechanism are huge; It is simple that conical surface friction compresses locking mechanism, but conical surface compression propulsive thrust is limited; Interference locking requires very strict to the 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 hydraulic cylinder, compact conformation, without unnecessary control port, lock function is reliably rapid, do not need additional operations mechanism, operational motion separately, hydraulic cylinder, in realizing expanding-contracting action, is realized locking and the hydraulic cylinder of release action elastic card claw enclosed automatic locking mechanism.
In order to solve the problems of the technologies described above, the technical solution used in the present invention is: elastic card claw enclosed automatic locking mechanism for hydraulic cylinder, comprise front end housing, cylinder barrel, back cylinder cover, piston rod, piston and lockable mechanism, described cylinder barrel is threaded with front end housing, back cylinder cover, the external diameter at cylinder barrel two ends and front end housing, back cylinder cover inwall matched in clearance, described piston rod entirety is stepped, piston rod is movably arranged in cylinder barrel through front end housing, described piston is connected with piston rod thread, and piston inner wall coordinates with piston rod small-end crest clearance;
Described lockable mechanism comprises elastic card claw and guiding lock tube, and elastic card claw and guiding lock tube are mutually locked in that piston rod stretches out or play locking action when retracted state.
Preferably, described elastic card claw is the outer claw of elasticity, described guiding lock tube is inner cone guiding lock tube, the outer claw of described elasticity is fixedly installed in the installation stepped hole of back cylinder cover, described inner cone guiding lock tube is fixedly installed on piston rod endoporus step, compressed by piston, the end face of described piston is provided with the outer claw of elasticity and passes through hole;
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, described elastic card claw is claw in elasticity, described guiding lock tube is outer cone guiding lock tube, in described elasticity, claw is fixedly installed in front end housing groove, is compressed by cylinder barrel, and in elasticity, the inwall of claw coordinates with front end housing groove crest clearance, described outer cone guiding lock tube is sleeved on piston rod, outer cone guiding lock tube inwall coordinates with piston rod crest clearance, and the piston rod step limits outer cone lock tube one end of leading moves axially, axially being compressed by piston of the other end;
In described elasticity, on the internal diameter of claw end, be provided with the interior clamping step that both sides are inclined-plane, the convenient turnover of skew back face outer cone guiding lock tube, opposite side inclined-plane and the locking of outer cone guide lock cover;
The two ends of described outer cone guiding lock tube outer wall are provided with inclined-plane, and a skew back face is for leading to claw in described elasticity, and in opposite side inclined-plane and elasticity, claw locks.
Preferably, described elastic card claw comprises claw in the outer claw of elasticity and elasticity, and described guiding lock tube comprises inner cone guiding lock tube and outer cone guiding lock tube;
The outer claw of described elasticity is fixedly installed in the installation stepped hole of back cylinder cover, described inner cone guiding lock tube is fixedly installed on piston rod endoporus step, compressed by piston, the end face of described piston is provided with the outer claw of elasticity and passes through hole, on the external diameter of the outer claw of elasticity end, be provided with the outer clamping step that both sides are inclined-plane, the convenient turnover of one 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 inner cone guiding lock tube is provided with the outer claw of elasticity and passes through hole, the outer claw 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 of described elasticity, the outer claw locking of opposite side inclined-plane and elasticity,
In described elasticity, claw is fixedly installed in front end housing groove, compressed by cylinder barrel, in elasticity, the inwall of claw coordinates with front end housing groove crest clearance, described outer cone guiding lock tube is sleeved on piston rod, outer cone guiding lock tube inwall coordinates with piston rod crest clearance, piston rod step limits outer cone guiding lock tube one end moves axially, axially being compressed by piston of the other end, in elasticity, on the internal diameter of claw end, be provided with the interior clamping step that both sides are inclined-plane, the convenient turnover of one skew back face outer cone guiding lock tube, opposite side inclined-plane and the locking of outer cone guide lock cover, the two ends of outer cone guiding lock tube outer wall are provided with inclined-plane, one skew back face is for leading to claw in described elasticity, claw locking in opposite side inclined-plane and elasticity.
Preferably, described lockable mechanism also comprises interior locking lock tube and inner spring, and described interior locking lock tube is arranged on piston rod end endoporus, with piston rod endoporus matched in clearance, the end that interior locking lock tube enters the outer claw of elasticity is provided with inclined-plane, and described inner spring is arranged in interior locking lock tube endoporus.
Preferably, described lockable mechanism also comprises outer locking lock tube and outer spring, described outer locking lock tube is enclosed within on outer cone guiding lock tube small stair, one end is compressed by outer cone guide lock cover, the other end is compressed by outer spring, outer locking lock tube inwall and outer cone guiding lock tube outer diameter of step matched in clearance, the end that outer locking lock tube enters for claw in elasticity is provided with inclined-plane, and described outer spring is arranged between outer locking lock tube inner chamber and piston inside groove.
Preferably, a side of the outer clamping step of the outer claw of described elasticity is provided with axial grooving.
Preferably, in described elasticity, a side of the interior clamping step of claw is provided with axial grooving.
The present invention compared with prior art has following beneficial effect.
The first, the present invention as required, designs different elastic card claw lockable mechanisms, strong adaptability; When this locking form can realize variable locking operating mode, in hydraulic cylinder, appoint one or both ends enclosed machine automatization locking, secondary enclosed lock function makes locking more reliable.
The second, the present invention does not need only executive component and operational motion realization to automatically lock and release; Reasonable arrangement structure, lockable mechanism only increases the function of hydraulic cylinder, but does not affect the contour structures of hydraulic cylinder, makes hydraulic cylinder contour structures compactness, and simple to operate, mounting interface is reasonable; After locking, do not need work fluid, hydraulic pump source can quit work, and the working time of oil sources dwindles, and has extended the working life of system, has saved the energy simultaneously, has reduced noise.
Three, cylinder device has omitted hydraulic lock, avoids the soft leg phenomenon that produces due to hydraulic lock seepage, and oil circuit is simple; Lockable mechanism is adjusted design as required, forms different hydraulic cylinder series; The problems such as the present invention efficiently solves that the locking occurring in current cylinder ends mechanical locking mechanism is unreliable, locking mechanism and hydraulic cylinder are manufactured difficulty, and service life is low, having met has requirement to space, to the application demand of the strict occasion of locking reliability requirement.
Brief description of the drawings
Below in conjunction with accompanying drawing, the present invention will be further described in detail.
Fig. 1 is that embodiment mono-hydraulic cylinder is regained the structural representation of locking.
Fig. 2 is that embodiment bis-hydraulic cylinders stretch out the structural representation of locking.
Fig. 3 is the structural representation of embodiment tri-hydraulic cylinder two ends lockings.
In figure: 1 is drive end bearing bracket, 2 is cylinder barrel, and 3 is back cylinder cover, and 4 is piston rod, and 5 is piston, 61 is the outer claw of elasticity, and 62 is claw in elasticity, and 71 is inner cone guiding lock tube, and 72 is outer cone guiding lock tube, 81 is interior locking lock tube, and 82 is outer locking lock tube, and 91 is inner spring, and 92 is outer spring.
Detailed description of the invention
Embodiment mono-
As shown in Figure 1, elastic card claw enclosed automatic locking mechanism for hydraulic cylinder, comprise cylinder barrel 2, back cylinder cover 3, piston rod 4, piston 5, the outer claw 61 of elasticity, inner cone guiding lock tube 71, interior locking lock tube 81 and inner spring 91, the outer claw 61 of elasticity is threaded with back cylinder cover 3, does not do axially-movable. Inner spring 91 is placed in interior locking lock tube 81, be placed on together in piston rod 4 end endoporus, inner cone guiding lock tube 71 is placed on piston rod 4 another boss, by piston 5 axial limitings that are threaded with piston rod 4, inner cone guiding lock tube 71 and interior locking lock tube 81 radially with piston rod 4 endoporus matched in clearance. Piston 5, inner cone guiding lock tube 71, interior locking lock tube 81, inner spring 91 are with the flexible axially-movable of piston rod 4.
Form rodless cavity by piston 5, cylinder barrel 2, back cylinder cover 3, piston rod 4, interior locking lock tube 81, front end housing 1(is not shown in the figures), cylinder barrel 2, piston 5, piston rod 4 form rod chamber.
Back cylinder cover 3 upper bottom portion step screw threads are used for outer claw 61 axial limitings of elasticity and are connected, and major thread is connected with cylinder barrel 2, while and cylinder barrel 2 matched in clearance. Radial screw bore connects logical oily joint.
Interior locking lock tube 81 is after hydraulic cylinder pressure relief, while being pressed on the outer claw 61(locking of elasticity due to spring-force driven dual) or inner cone guiding lock tube 71 end faces (while locking) on, in locking process outside back pressure and elasticity under the power effect of claw 61, compression inner spring 91 to regain direction shrink on a small quantity, interior locking lock tube 81 radially with back cylinder cover 3 matched in clearance. Interior locking lock tube 81 one end cylinders are used for preventing the rear unexpected contraction of outer claw 61 locking of elasticity, and inclined-plane, cylinder porch enters easily the outer claw 61 of elasticity. Other end endoporus is used for placing inner spring 91, gives inner spring 91 flexible guiding, and prevents from being out of shape in inner spring 91 telescopic process.
Inclined-plane, the outer outer clamping step one end of claw 61 of elasticity is used for locking with inner cone guiding lock tube 71. It is easier that other end inclined-plane makes to enter inner cone guiding lock tube 71, protects inner cone guiding lock tube 71 conical surface that leads simultaneously. Axially grooved formula pawl valve structure makes the outer claw 61 of elasticity in the time of work, draw in and to reset, and realizes locking and unlocking function.
Piston 5 end-face holes can allow the outer claw 61 of elasticity pass in and out, and piston 5 is threaded with piston rod 4, simultaneously with piston rod 4 and cylinder barrel 2 matched in clearance.
The course of work of the present embodiment one is: hydraulic cylinder rod chamber is to pressure oil, piston rod 4 is recovered to locking bit, the outer claw 61 of elasticity enters inner cone guiding lock tube 71, the outer clamping step of the outer claw 61 of elasticity and the 71 inclined-plane lockings of inner cone guiding lock tube, now hydraulic cylinder pressure relief, interior locking lock tube 81, under spring-force driven dual, enters outer claw 61 inner chambers of elasticity, prevent the outer claw 61 of elasticity unexpected disengagement from inner cone guiding lock tube 71, cause lockout failure. While unblanking, hydraulic cylinder rodless cavity is to pressure oil, and interior locking lock tube 81 compresses inner spring 91, until interior locking lock tube 81 leaves outer claw 61 inner chambers of elasticity, hydraulic cylinder possesses the condition of unblanking, in the time that oil pressure is enough, the outer claw 61 of elasticity is thrown off from inner cone guiding lock tube 71, and piston rod 4 starts to stretch out.
When the present embodiment one is regained for hydraulic cylinder from heavy and light, while carrying the stressed little operating mode such as little outward.
Embodiment bis-
As shown in Figure 2, elastic card claw enclosed automatic locking mechanism for hydraulic cylinder, comprises claw 62 in cylinder barrel 2, front end housing 1, piston rod 4, piston 5, elasticity, outer cone guiding lock tube 72, outer locking lock tube 82 and outer spring 92. In elasticity, claw 62 is placed in front end housing 1 groove, and cylinder barrel 2 is tightened with front end housing 1 use screw thread, and claw 62 in elasticity is pushed down in cylinder barrel 2 one end, claw 62 axial limitings in elasticity. Outer cone guiding lock tube 72 is contained on piston rod 4, and axially one end is spacing by piston rod 4 steps. Outer locking lock tube 82 is contained on outer cone guiding lock tube 72, and axially one end is spacing by outer cone guiding lock tube 72. Outer spring 92 is contained in outer locking lock tube 82 and piston 5 grooves, and piston 5 is threaded with piston rod 4 use, and piston 5 inner convex platforms compress outer cones guiding lock tube 72 other ends, outer cone guiding lock tube 72 axial restraints. When piston 5 is in place, outer spring 92 compresses, and compresses the other end of outer locking lock tube 82, outer locking lock tube 82 axial restraints. In elasticity, between claw 62 internal diameters and front end housing 11 groove external diameters, outer cone guiding lock tube 72 and piston rod 4, outer locking lock tube 82 and outer cone guiding lock tube 72, piston 5 and piston rod 4, piston 5 and cylinder barrel 2, outer locking lock tube 82 and cylinder barrel 2, be all radially matched in clearance. Outer cone guiding lock tube 72, piston 5, outer spring 92, outer locking lock tube 82 stretch and axially-movable with piston rod 4.
Form rodless cavity by piston 5, cylinder barrel 2 with back cylinder cover 3, front end housing 1, cylinder barrel 2, outer cone guiding lock tube 72, outer locking lock tube 82, piston rod 4 form rod chamber.
Front end housing 1 is topped bar and is coordinated spacingly with 62 axial limitings of claw in elasticity and radial clearance, and front end housing 1 is threaded with cylinder barrel 2, simultaneously and cylinder barrel 2 matched in clearance. Radial screw bore is used for connecting logical oily joint.
In elasticity, inclined-plane, the interior clamping step one end of claw 62 is used for locking with outer cone guiding lock tube 72. It is easier that other end inclined-plane makes to enter outer cone guiding lock tube 72, protects outer cone guiding lock tube 72 conical surface that leads simultaneously. Axially grooved formula pawl valve structure makes claw 62 in elasticity in the time of work, draw in and to reset, and realizes locking and unlocking function.
Outer locking lock tube 82 one end endoporus are used for preventing the rear unexpected distending of claw 62 locking in elasticity, and inclined-plane, porch enters easily claw 62 in elasticity. Other end endoporus is used for placing outer spring 92, gives outer spring 92 flexible guiding, and prevents from being out of shape in outer spring 92 telescopic process.
Outer cone guiding lock tube 72 inclined-planes, internal diameter one end are guiding when claw 62 enters in elasticity, and the other end is for claw 62 in locking elastic.
The course of work of the present embodiment is: hydraulic cylinder rodless cavity is to pressure oil, piston rod 4 reaches locking bit, in elasticity, claw 62 enters outer cone guiding lock tube 72, under the effect of outer locking lock tube 82 thrust of claw 62 in back pressure and elasticity, compression outer spring 92 moves to regaining direction, in elasticity, claw 62 enters after outer cone guiding lock tube 72, the inner convex platform of the outer claw 61 of elasticity and outer cone guiding lock tube 72 lock, now hydraulic cylinder pressure relief, outer spring 92 resets, and promotes outer locking lock tube 82 and enters claw 62 in elasticity. Outer locking lock tube 82, under spring-force driven dual, enters claw 62 cylindricals in elasticity, prevents claw 62 unexpected disengagement from outer cone guiding lock tube 72 in elasticity, causes lockout failure. While unblanking, hydraulic cylinder rod chamber is to pressure oil, and outer locking lock tube 82 compresses outer spring 92, until outer locking lock tube 82 leaves claw 62 in elasticity, hydraulic cylinder possesses the condition of unblanking, in the time that oil pressure is enough, in elasticity, claw 62 is thrown off from outer cone guiding lock tube 72, and piston rod 4 starts to regain.
This enforcement is mainly used in hydraulic cylinder stretches out the form of locking.
Embodiment tri-
Elastic card claw enclosed automatic locking mechanism for hydraulic cylinder, comprises claw 62, inner cone guiding lock tube 71, outer cone guiding lock tube 72, interior locking lock tube 81, outer locking lock tube 82, inner spring 91 and outer spring 92 in front end housing 1, cylinder barrel 2, back cylinder cover 3, piston rod 4, piston 5, the outer claw 61 of elasticity, elasticity. In elasticity, claw 62 is placed in front end housing 1 groove, and cylinder barrel 2 is threaded with front end housing 1 use, and claw 62 in elasticity is pushed down in cylinder barrel 2 one end, claw 62 axial limitings in elasticity. Outer cone guiding lock tube 72 is contained on piston rod 4, and axially one end is spacing by piston rod 4 steps. Outer locking lock tube 82 is contained on outer cone guiding lock tube 72, and axially one end is spacing by outer cone guiding lock tube 72. Outer spring 92 is contained in outer locking lock tube 82 and piston 5 grooves, and piston 5 is threaded with piston rod 4 use, and piston 5 inner convex platforms compress outer cones guiding lock tube 72 other ends, outer cone guiding lock tube 72 axial restraints. When piston 5 is in place, outer spring 92 compresses, and compresses the other end of outer locking lock tube 82, outer locking lock tube 82 axial restraints.
The outer claw 61 of elasticity is threaded with back cylinder cover 3, does not do axially-movable. Inner spring 91 is placed in interior locking lock tube 81, be placed on together in piston rod 4 end endoporus, inner cone guiding lock tube 71 is placed on piston rod 4 another boss, by piston 5 axial limitings that are threaded with piston rod 4, inner cone guiding lock tube 71 and interior locking lock tube 81 radially with piston rod 4 endoporus matched in clearance.
In elasticity, between claw 62 internal diameters and front end housing 1 groove external diameter, outer cone guiding lock tube 72 and piston rod 4, outer locking lock tube 82 and outer cone guiding lock tube 72, piston 5 and piston rod 4, piston 5 and cylinder barrel 2, outer locking lock tube 82 and cylinder barrel 2, interior guiding lock tube and piston rod 4, interior locking lock tube 81 and piston rod 4, be all radially matched in clearance. Outer cone guiding lock tube 72, piston 5, outer spring 92, outer locking lock tube 82, inner cone fairlead, interior locking lock tube 81, inner spring 91 are with the flexible axially-movable of piston rod 4.
Form rodless cavity by piston 5, cylinder barrel 2, back cylinder cover 3, piston rod 4, interior locking lock tube 81, front end housing 1, cylinder barrel 2, outer cone guiding lock tube 72, outer locking lock tube 82, piston rod 4 form rod chamber.
The present embodiment three is combinations of embodiment mono-and embodiment bis-, in the present embodiment hydraulic cylinder regain locking operation principle identical with embodiment mono-, hydraulic cylinder stretch out lock operation principle identical with embodiment bis-. The present embodiment is for the form of hydraulic cylinder two ends locking.
The present invention as required, designs different elastic card claw locking combined structural members, strong adaptability; Can realize variable locking operating mode time, in hydraulic cylinder, appoint one or both ends enclosed machine automatization locking, secondary (enclosed) lock function makes locking more reliable.
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 skill in the art, can also under the prerequisite that does not depart from aim of the present invention, makes various variations.

Claims (5)

1. elastic card claw enclosed automatic locking mechanism for hydraulic cylinder, it is characterized in that: comprise front end housing (1), cylinder barrel (2), back cylinder cover (3), piston rod (4), piston (5) and lockable mechanism, described cylinder barrel (2) and front end housing (1), back cylinder cover (3) is threaded, the external diameter at cylinder barrel (2) two ends and front end housing (1), back cylinder cover (3) inwall matched in clearance, described piston rod (4) entirety is stepped, piston rod (4) is movably arranged in cylinder barrel (2) through front end housing (1), described piston (5) is threaded with piston rod (4), piston (5) inwall coordinates with piston rod (4) small end crest clearance,
Described lockable mechanism comprises elastic card claw and guiding lock tube, and elastic card claw and guiding lock tube are mutually locked in that piston rod (4) stretches out or play locking action when retracted state;
Described elastic card claw comprises claw (62) in the outer claw (61) of elasticity and elasticity, and described guiding lock tube comprises inner cone guiding lock tube (71) and outer cone guiding lock tube (72);
The outer claw (61) of described elasticity is fixedly installed in the installation stepped hole of back cylinder cover (3), described inner cone guiding lock tube (71) is fixedly installed on piston rod (4) endoporus step, compressed by piston (5), the end face of described piston (5) is provided with the outer claw (61) of elasticity and passes through hole, on the external diameter of the outer claw (61) of elasticity end, be provided with the outer clamping step that both sides are inclined-plane, one skew back face convenient turnover inner cone guiding lock tube (71), opposite side inclined-plane and inner cone guiding lock tube (71) locking, the middle part of inner cone guiding lock tube (71) is provided with the outer claw (61) of elasticity and passes through hole, the outer claw (61) 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 (61) of described elasticity, outer claw (61) locking of opposite side inclined-plane and elasticity,
In described elasticity, claw (62) is fixedly installed in front end housing (1) groove, compressed by cylinder barrel (2), inwall and front end housing (1) the groove internal diameter matched in clearance of claw (62) in elasticity, described outer cone guiding lock tube (72) is sleeved on piston rod (4), outer cone guiding lock tube (72) inwall coordinates with piston rod (4) crest clearance, piston rod (4) step limits outer cone guiding lock tube (72) one end moves axially, axially being compressed by piston (5) of the other end, in elasticity, on the internal diameter of claw (62) end, be provided with the interior clamping step that both sides are inclined-plane, one skew back face convenient turnover outer cone guiding lock tube (72), opposite side inclined-plane and outer cone guiding lock tube (72) locking, the two ends of outer cone guiding lock tube (72) outer wall are provided with inclined-plane, one skew back face is for leading to claw (62) in described elasticity, claw (62) locking in opposite side inclined-plane and elasticity.
2. elastic card claw enclosed automatic locking mechanism for hydraulic cylinder according to claim 1, it is characterized in that: described lockable mechanism also comprises interior locking lock tube (81) and inner spring (91), described interior locking lock tube (81) is arranged on piston rod (4) end endoporus, with piston rod (4) endoporus matched in clearance, the end that interior locking lock tube (81) enters the outer claw (61) of elasticity is provided with inclined-plane, and described inner spring (91) is arranged in interior locking lock tube (81) endoporus.
3. elastic card claw enclosed automatic locking mechanism for hydraulic cylinder according to claim 2, it is characterized in that: described lockable mechanism also comprises outer locking lock tube (82) and outer spring (92), described outer locking lock tube (82) is enclosed within on outer cone guiding lock tube (72) small stair, one end by outer cone lead lock tube (72) compress, the other end is compressed by outer spring (92), outer locking lock tube (82) inwall and outer cone guiding lock tube (72) outer diameter of step matched in clearance, the end that outer locking lock tube (82) enters for claw (62) in elasticity is provided with inclined-plane, described outer spring (92) is arranged between outer locking lock tube (82) inner chamber and piston (5) inside groove.
4. elastic card claw enclosed automatic locking mechanism for hydraulic cylinder according to claim 3, is characterized in that: a side of the outer clamping step of the outer claw (61) of described elasticity is provided with axial grooving.
5. elastic card claw enclosed automatic locking mechanism for hydraulic cylinder according to claim 4, is characterized in that: in described elasticity, a side of the interior clamping step of claw (62) is provided with axial grooving.
CN201410288248.2A 2014-06-25 2014-06-25 Elastic card claw enclosed automatic locking mechanism for hydraulic cylinder CN104088852B (en)

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CN201410288248.2A CN104088852B (en) 2014-06-25 2014-06-25 Elastic card claw enclosed automatic locking mechanism for hydraulic cylinder

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CN104088852B true CN104088852B (en) 2016-05-04

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Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104454772A (en) * 2014-11-03 2015-03-25 无锡市百顺机械厂 Oil cylinder cover anti-loosening device
CN110094385A (en) * 2019-05-24 2019-08-06 河南百思特机械设备制造有限公司 A kind of Novel environmental-sanitation plant machinery locking hydraulic cylinder

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4024800A (en) * 1974-03-27 1977-05-24 Messier Hispano Actuating and bracing jack
DE102005001548A1 (en) * 2005-01-13 2006-07-20 Zf Friedrichshafen Ag Device for actuating a locking mechanism
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
CN203926223U (en) * 2014-06-25 2014-11-05 长治清华机械厂 Elastic card claw enclosed automatic locking mechanism for a kind of oil hydraulic cylinder

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4024800A (en) * 1974-03-27 1977-05-24 Messier Hispano Actuating and bracing jack
DE102005001548A1 (en) * 2005-01-13 2006-07-20 Zf Friedrichshafen Ag Device for actuating a locking mechanism
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
CN203926223U (en) * 2014-06-25 2014-11-05 长治清华机械厂 Elastic card claw enclosed automatic locking mechanism for a kind of oil hydraulic cylinder

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