CN2851679Y - Hydraulic cylinder with mechanical lock - Google Patents
Hydraulic cylinder with mechanical lock Download PDFInfo
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- CN2851679Y CN2851679Y CN 200520122793 CN200520122793U CN2851679Y CN 2851679 Y CN2851679 Y CN 2851679Y CN 200520122793 CN200520122793 CN 200520122793 CN 200520122793 U CN200520122793 U CN 200520122793U CN 2851679 Y CN2851679 Y CN 2851679Y
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Abstract
The utility model relates to a hydraulic oil cylinder with a mechanical lock which is arranged inside a cylinder of the oil cylinder, and mainly comprises a control piston, a big spring, a shaft sleeve, a steel ball supporting ring and steel balls. The hydraulic oil cylinder of the utility model realizes locking through that the steel balls which are arranged in the steel ball supporting ring fixed to a cylinder head are embedded inside a groove of a shaft sleeve which is fixed to a piston rod when the piston rod reaches the compression limit so that the upper sides of the steel balls are compressed by a control piston which is connected with a piston. The control piston is pivoted with the piston, and along the axial direction, is provided with the big spring which is fixedly connected with the control piston and the piston. The inner structure of the hydraulic oil cylinder of the utility model is improved on the basis of the oil cylinder of the prior art, so that the cost of modification or the cost of manufacture can be reduced; besides, the oil cylinder can not be telescoped by oil leakage of the cylinder body or the piston, etc. so that the stability of using the oil cylinder is increased; meanwhile, the locking accuracy and the locking stability of the mechanical lock can not be affected by oil leakage of a certain component of the hydraulic system.
Description
Technical field
The utility model relates to a kind of hydraulic jack with mechanical lock, particularly relates to a kind ofly realizing mechanical caging according to the choke pressure drop principle in the hydraulic principle, and has the hydraulic jack with mechanical lock that automatically locks with the automatic unlocking function.
Background technique
Seeing also shown in Figure 1ly, is the cross-sectional view of the hydraulic jack of prior art.As shown in the figure, the hydraulic jack of prior art mainly comprises: cylinder head 1; Cylinder barrel 3; Piston 6; Piston rod 9; Guide sleeve 15; Rear end cover 16; Earrings 17.
Wherein, cylinder head 1 is located at the front end of hydraulic jack, and its front end with cylinder barrel 3 is connected, and the rear end of cylinder barrel 3 is connected with rear end cover 16, by above-mentioned cylinder head 1, cylinder barrel 3, and rear end cover 16 constitute the cylinder body of hydraulic jacks, piston rod 9 carries out straight reciprocating motion in above-mentioned cylinder body.Piston 6 fixedly is located at the front end of above-mentioned piston rod 9.Guide sleeve 15 is fixedlyed connected with rear end cover 16 one, and can promptly can adjust the limit position that piston 6 moves to the right by the stroke of the threaded adjustment oil cylinder on the cylinder barrel 3.Earrings 17 is connected with piston rod 9 one by the piston rod 9 outer screw threads that are exposed at cylinder barrel 3 outsides, and can carry out straight reciprocating motion with piston rod 9.
The hydraulic jack of above-mentioned prior art is provided with the oil cylinder rodless cavity Spd1 that forms between the rear portion of the front portion of piston rod 9 and piston 6 and cylinder head 1 in above-mentioned cylinder body, and the cylinder rod chamber Spd2 that forms between the front end of the rear end of piston 6 and rear end cover 16.
When in oil cylinder rodless cavity Spd1, feeding pressure oil, under the effect of pressure oil, promote piston 6 and move right, and under piston drives, make piston rod 9 stretch out rear end cover 16; When in cylinder rod chamber Spd2, feeding pressure oil, under the effect of pressure oil, promote piston 6 to left movement, and piston rod 9 is retracted in the rear end cover 16 under the above-mentioned state that stretches out.
By said structure as can be known, the hydraulic jack of prior art can only be realized bidirectional-movement, and does not possess the function with the oil cylinder locking.
Hydraulic jack with prior art of said structure, can be because of the leakage of fluid etc. former thereby make oil cylinder flexible, influence the Security of apparatus system.In the hydraulic system of prior art, usually take to increase the method for locked loop, promptly in oil cylinder two chambeies, bidirectional hydraulic lock is set, but the method can't solve the internal leakage problem of element, the precision and the stability of influence locking, leak thereby make hydraulic system fluid-control one-way defective valve, cylinder block or piston in a single day occur, all can cause the flexible and uncontrollable of oil cylinder.
This shows that above-mentioned existing hydraulic jack obviously still has inconvenience with not enough, and demands urgently further being improved in structure and use.In order to solve the deficiency that hydraulic jack exists, relevant manufacturer there's no one who doesn't or isn't seeks solution painstakingly, but do not see always that for a long time suitable design finished by development, and common product does not have appropriate structure to address the above problem, this obviously is the problem that the anxious desire of relevant dealer solves.Therefore how to found a kind of hydraulic jack of new structure, just become the current industry utmost point to need improved target with mechanical lock.
Because the defective that above-mentioned existing hydraulic jack exists, the design people is based on being engaged in this type of product specification manufacturing abundant for many years practical experience and professional knowledge, and the utilization of cooperation scientific principle, actively studied innovation, in the hope of founding a kind of hydraulic jack of new structure with mechanical lock, can improve general existing hydraulic jack, make it have more practicability.Through constantly research, design, and after studying sample and improvement repeatedly, create the utility model that has practical value finally.
Summary of the invention
The purpose of this utility model is, overcome the deficiency that existing hydraulic jack exists, and provide a kind of hydraulic jack of new structure with mechanical lock, technical problem to be solved is that piston rod is locked by mechanical lock when stretching to the limit position of cylinder head direction, thereby is suitable for practicality more.
Another purpose of the present utility model is, overcome the deficiency that existing hydraulic jack exists, and provide a kind of hydraulic jack of new structure with mechanical lock, technical problem to be solved is to make piston rod under the situation of mechanical lock locking, can not stretch out to the outside, thereby be suitable for practicality more owing to devices such as hydraulic pipe line or hydrovalve occur leaking damage.
The purpose of this utility model and to solve its technical problem be to adopt following technological scheme to realize.According to a kind of hydraulic jack with mechanical lock that the utility model proposes, it comprises: cylinder head, be located at the front end of hydraulic jack; Cylinder barrel is arranged at the rear side of above-mentioned cylinder head; Flange is fixedlyed connected above-mentioned cylinder head with cylinder barrel; Piston rod is located in the above-mentioned cylinder barrel, and carries out straight reciprocating motion with fixing axial direction in cylinder barrel; Axle sleeve (being lock core) is fixed at the front end of piston rod; Piston is fixedlyed connected with axle sleeve, by fixedlying connected of axle sleeve and this piston rod, and fixedly is located on the above-mentioned piston rod, the through hole that connects before and after its inside is provided with; Axially back-up ring encircles and is located at the front end of piston, and is articulated on the piston; Control piston (being lock tube) fixedly installs with axial back-up ring, and by axial back-up ring control piston is articulated on the piston; Relief valve runs through on the through hole that is located at piston, can open and close this through hole; Check ring fixedly is located at the rear side of above-mentioned piston, and the fixing front end of supporting is connected the rear end of the control spring of setting with above-mentioned relief valve; Big spring is arranged on the front side of piston and the rear side of control piston, and fixes with piston and control piston respectively, and this big spring is a side that is fixedly installed on above-mentioned piston with axial direction; The steel ball supporting ring, be to be fixed as one with cylinder head and cylinder barrel, this steel ball supporting ring is on the outer side surface of the inside of cylinder head, be provided with and protrude the bump that is provided with, and this bump is to be arranged at position between axle sleeve upside and the control piston downside with the direction parallel with piston rod, is provided with hollow portion in this bump; And steel ball, be provided with in the hollow portion of above-mentioned bump, and this steel ball is can be provided with up or down in above-mentioned hollow portion; Wherein, on above-mentioned axle sleeve outer side surface, be provided with one of them of groove or lug boss, the downside of above-mentioned steel ball is corresponding with above-mentioned groove or lug boss, the corresponding position of upside of the front end downside of control piston and above-mentioned steel ball is provided with wherein another of above-mentioned groove or lug boss, and the summit of the bottom of groove and lug boss together support steel ball under lock state.
The purpose of this utility model and solve its technical problem and also can adopt following technical measures further to realize.
Aforesaid hydraulic jack with mechanical lock, the big spring that is provided with between wherein said control piston and the piston has certain pretightening force.
Aforesaid hydraulic jack with mechanical lock, wherein said control piston be made as " T " font structure, and control piston is to fixedly connected with the front end of above-mentioned big spring by the bottom rear side of this " T " font structure.
Spherical, ellipticity or coniform wherein arbitrary that aforesaid hydraulic jack with mechanical lock, the shape of wherein said steel ball can be made as.
Aforesaid hydraulic jack with mechanical lock is provided with between wherein said lug boss and the groove and steel ball is entered and the passage of the state position that goes out of lock, and this passage is formed by the plane of inclination of lug boss and groove.
Be provided with one between the aforesaid hydraulic jack with mechanical lock, wherein said control piston and piston and make the damping unit that both sides are communicated with before and after the control piston, this damping unit comprises that annulus damper portion or small damping device are wherein arbitrary.
Via as can be known above-mentioned, the utility model relates to a kind of hydraulic jack with mechanical lock, and this mechanical lock is arranged in the cylinder barrel of oil cylinder, mainly comprises control piston, big spring, axle sleeve, steel ball supporting ring, and steel ball.Hydraulic jack of the present utility model be by with the fixing steel ball supporting ring of cylinder head in the steel ball that is provided with when piston rod arrives compression limit, embed in the groove of the axle sleeve of fixing with piston rod, and the upside of steel ball is by the control piston crimping that is connected with piston, thereby realize locking, wherein, control piston and piston articulate, and are being axially arranged with the big spring of fixedlying connected with piston with control piston.Hydraulic jack of the present utility model is to improve its internal structure on the basis of the oil cylinder of prior art, so can reduce repacking or manufacture cost, in addition, can not make oil cylinder flexible because of reasons such as cylinder body or vent piston leakage of oils, and the Security that the raising oil cylinder uses, simultaneously, can not leak precision and the stability that oil influences the mechanical lock locking because of certain element in the hydraulic system.
By technique scheme, the hydraulic jack that the utlity model has mechanical lock can reach suitable technological progress and practicability, and has the extensive value on the industry, and it has following advantage at least:
1, hydraulic jack of the present utility model is to improve its internal structure on the basis of the oil cylinder of prior art, to realize having the mechanical lock function, and need not to revise other structures of original hydraulic system, so can reduce repacking or manufacture cost, be beneficial to the extensive utilization of industry.
2, hydraulic jack of the present utility model has the function of mechanical lock locking, so can not improve the Security that oil cylinder uses because of reasons such as cylinder block or vent piston leakage of oil make oil cylinder flexible.
3, hydraulic jack of the present utility model can not influence the precision and the stability of mechanical lock locking because of the leakage oil phenomenon of certain element in the hydraulic system.
In sum, the hydraulic jack with mechanical lock of the utility model special construction, piston rod can be locked by mechanical lock when stretching to the limit position of cylinder head direction, in addition, make piston rod under the situation of mechanical lock locking, can not stretch out to the outside owing to devices such as hydraulic pipe line or hydrovalve occur leaking damage.It has above-mentioned many advantages and use value, and in like product, do not see have similar structural design to publish or use and really genus innovation, no matter it all has bigger improvement on product structure or function, have large improvement technically, and produced handy and practical effect, and more existing hydraulic jack has the multinomial effect of enhancement, thus be suitable for practicality more, and have the extensive value of industry, really be a new and innovative, progressive, practical new design.
Above-mentioned explanation only is the general introduction of technical solutions of the utility model, for can clearer understanding technological means of the present utility model, and can be implemented according to the content of specification, and for above-mentioned and other purposes, feature and advantage of the present utility model can be become apparent, below especially exemplified by preferred embodiment, and conjunction with figs., be described in detail as follows.
Description of drawings
Fig. 1 is the cross-sectional view of the hydraulic jack of prior art.
Fig. 2 the utlity model has the cross-sectional view of the hydraulic jack of mechanical lock at released state.
Fig. 3 the utlity model has the cross-sectional view of the hydraulic jack of mechanical lock at lock state.
1: cylinder head 2: flange
3: cylinder barrel 4: control piston
5: big spring 6: piston
7: relief valve 8: back-up ring
9: piston rod 10: axle sleeve
11: steel ball 12: the steel ball supporting ring
13: axial back-up ring Spd1: oil cylinder rodless cavity
Spd2: cylinder rod chamber Spd3: intermediate cavity
Embodiment
For further setting forth the utility model is to reach technological means and the effect that predetermined goal of the invention is taked, below in conjunction with accompanying drawing and preferred embodiment, to according to its embodiment of the hydraulic jack with mechanical lock, structure, feature and the effect thereof that the utility model proposes, describe in detail as after.In the utility model, the parts with structure same as the prior art, function use identical label, and part same as the prior art is not given unnecessary details in the utility model.
See also Fig. 2 and shown in Figure 3, Fig. 2 the utlity model has the cross-sectional view of the hydraulic jack of mechanical lock at released state, and Fig. 3 the utlity model has the cross-sectional view of the hydraulic jack of mechanical lock at lock state.
The hydraulic jack that the utlity model has mechanical lock comprises: cylinder head 1; Flange 2; Cylinder barrel 3; Piston 6; Control piston 4; Relief valve 7; Piston rod 9; Big spring 5; Axle sleeve 10; Steel ball supporting ring 12; Steel ball 11; Back-up ring 8; Axial back-up ring 13; Guide sleeve 15; Rear end cover 16; And earrings 17 etc. (wherein, guide sleeve, rear end cover, earrings etc. are to be prior art, cooperate see also shown in Figure 1).Wherein, by control piston 4, big spring 5, axle sleeve 10, steel ball supporting ring 12, and steel ball 11 composition mechanical locks, this mechanical lock is arranged in the cylinder barrel 3 of oil cylinder.
Back-up ring 8 of the present utility model is in order to avoiding under many table oils cylinder situation about using in parallel, and piston rod 9 causes many table oils cylinder to influence each other when extending out to contiguous stop, and can't continue action.Under the situation that is provided with back-up ring 8, when piston rod 9 extend out to contiguous stop, back-up ring 8 stopped, and applied inside power by pressure spring to relief valve 7, made relief valve 7 complete closed, thereby do not influence the continuation action of other oil cylinders.
On above-mentioned axle sleeve 10 outer side surfaces, be provided with groove, and, be provided with and the corresponding lug boss of the groove of above-mentioned axle sleeve 10 at the downside of the top of control piston 4 front end.But the utility model is not limited to this, also can be located on the control piston 4 by groove, and lug boss is located on the axle sleeve 10 and the corresponding position of groove control piston, and neither changes such as its shape, function.Below, embodiment of the present utility model is located on the axle sleeve with groove, and the structure that lug boss is located on the control piston describes.
In addition, the steel ball supporting ring 12 that is provided with steel ball 11 is to be fixed as one with cylinder head 1 and cylinder barrel 3, this steel ball supporting ring 12 is provided with on the outer side surface of the inside of cylinder head 1 and protrudes the bump that is provided with, this bump is to be provided with on the direction parallel with piston rod 9, and this bump is arranged on the position with above-mentioned front groove level, make bump can insert this front groove, in other words, be steel ball supporting ring 12 and can be inserted in position between the downside of above-mentioned axle sleeve 10 upsides and control piston 4 top front ends.In the bump of above-mentioned steel ball supporting ring 12, be provided with steel ball 11, and steel ball 11 is arranged on and the corresponding position of the groove of above-mentioned axle sleeve 10, simultaneously, also the lug boss that is provided with the downside of above-mentioned control piston 4 top front ends is corresponding, in addition, on the relevant position of the steel ball supporting ring 12 of placing steel ball 11, be provided with than the steel ball 11 big hollow portion that takes up space, thereby steel ball 11 can be moved up and down in the hollow portion of steel ball supporting ring 12, particularly, steel ball 11 can move in the groove of axle sleeve 10 downwards, is lock state; Steel ball 11 upwards can move to the position at top of the groove of axle sleeve 10, is released state.
Also have, for making steel ball 11 can slip into the position of lock state, promptly enter the position between the lower end of lug boss of the groove of axle sleeve 10 and control piston 4, the hollow section area of above-mentioned groove is reduced from top to bottom gradually, begin intilted gradually groove plane of inclination thereby the front-end face of groove is formed from upside; And the lug boss of downward setting of top front end that is the above-mentioned control piston 4 of " T " font structure is made as the more upwards big more structure of section area, begins intilted gradually lug boss plane of inclination thereby the front-end face of lug boss is formed from upside.Make steel ball 11 enter the passage of lock state position by above-mentioned groove plane of inclination and the formation of lug boss plane of inclination.
In addition, the shape of above-mentioned steel ball 11 can be made as spherical, ellipticity or coniform wherein arbitrary.
In cylinder barrel 3 inside, form cylinder rod chamber Spd2 by the space between the front side of the rear side of piston 6 and rear end cover (not shown), form oil cylinder rodless cavity Spd1 by the space between the rear side of the front side of control piston 4 and piston rod 9 and cylinder head, form intermediate cavity Spd3 by the space between the front side of the rear side of control piston 4 and piston 6.Between above-mentioned oil cylinder rodless cavity Spd1 and intermediate cavity Spd3, be provided with above-mentioned damping unit, above-mentioned oil cylinder rodless cavity Spd1 be communicated with intermediate cavity Spd3 by this damping unit.
Below in conjunction with aforesaid structure its locking and unlocking process are described with hydraulic jack of mechanical lock.
Incoming pressure oil in cylinder rod chamber Spd2, thereby promote piston 6 to left movement, and drive piston rod 9 is to the direction withdrawal of cylinder head 1, when the steel ball 11 in the steel ball supporting ring 12 that is provided with on the top of control piston 4 front end and the cylinder head 1 contacts, steel ball 11 applies to the right power to control piston 4 under the support of steel ball supporting ring 12, thereby make control piston 4 relative movement take place with the piston 6 of fixedlying connected with piston rod 9, and piston rod 9 continues to left movement, compression big spring 5, after big spring 5 elastic force left is increased to a certain degree, steel ball 11 enters locked position downwards by the above-mentioned passage that is formed by groove plane of inclination and lug boss plane of inclination, the bottom of steel ball 11 is fastened in the groove of axle sleeve 10, and top is by the lug boss crimping of above-mentioned control piston 4.After entering lock state,, thereby make the piston rod 9 of fixedlying connected keep lock states with axle sleeve 10 owing to steel ball 11 is fastened in the groove.At this moment, the elastic force as the big spring 5 that do not overcome control piston 4 rear sides promptly, does not make control piston 4 move, and then will keep the position of steel ball 11 at lock state, and piston rod 9 can not be stretched out laterally.
In unlocking process, in oil cylinder rodless cavity Spd1, import high pressure oil, make pressure oil enter intermediate cavity Spd3 by the above-mentioned damping unit that is provided with between control piston 4 and the piston 6, after the pressure that is produced is greater than the spring force and frictional force that are arranged on relief valve 7 rear sides, relief valve 7 is opened, pressure oil enters among the above-mentioned cylinder rod chamber Spd2, because damping function, thereby control piston 4 both sides produce pressure drop, make above-mentioned oil cylinder rodless cavity Spd1 and intermediate cavity Spd3 that pressure difference arranged, under the situation that reaches the certain flow value of the high pressure oil of importing, overcome the elastic force of big spring 5 by the pressure to the right that makes control piston 4 that pressure difference produced, constantly compress big spring 5, control piston 4 is moved to unlocking direction, then, because the lug boss of control piston 4 can't be crimped on the top of steel ball 11, thereby steel ball 11 is discharged in the groove of axle sleeve 10, steel ball 11 moves up gradually along the passage that is formed by groove plane of inclination and lug boss plane of inclination, finally makes the piston rod 9 can protruding realization release.
As mentioned above, basic design of the present utility model as above.But in technical field of the present utility model,, can improve other exercisable embodiments of the present utility model as long as possess the most basic knowledge.In the utility model substantive technological scheme has been proposed the patent protection request, its protection domain should comprise all variation patterns with above-mentioned technical characterstic.
The above, it only is preferred embodiment of the present utility model, be not that the utility model is done any pro forma restriction, though the utility model discloses as above with preferred embodiment, yet be not in order to limit the utility model, any those skilled in the art are not in breaking away from the technical solutions of the utility model scope, when the technology contents that can utilize above-mentioned announcement is made a little change or is modified to the equivalent embodiment of equivalent variations, in every case be the content that does not break away from technical solutions of the utility model, according to technical spirit of the present utility model to any simple modification that above embodiment did, equivalent variations and modification all still belong in the scope of technical solutions of the utility model.
Claims (6)
1, a kind of hydraulic jack with mechanical lock is characterized in that it comprises:
Cylinder head is located at the front end of hydraulic jack;
Cylinder barrel is arranged at the rear side of above-mentioned cylinder head;
Flange is fixedlyed connected above-mentioned cylinder head with cylinder barrel;
Piston rod is located in the above-mentioned cylinder barrel, and carries out straight reciprocating motion with fixing axial direction in cylinder barrel;
Axle sleeve is fixed at the front end of piston rod;
Piston is fixedlyed connected with axle sleeve, by fixedlying connected of axle sleeve and this piston rod, and fixedly is located on the above-mentioned piston rod, the through hole that connects before and after its inside is provided with;
Axially back-up ring encircles and is located at the front end of piston, and is articulated on the piston;
Control piston fixedly installs with axial back-up ring, and by axial back-up ring control piston is articulated on the piston;
Relief valve runs through on the through hole that is located at piston, can open and close this through hole;
Check ring fixedly is located at the rear side of above-mentioned piston, and the fixing front end of supporting is connected the rear end of the control spring of setting with above-mentioned relief valve;
Big spring is arranged between piston and the control piston, and fixes with piston and control piston respectively, and this big spring is a side that is fixedly installed on above-mentioned piston with axial direction;
The steel ball supporting ring, be to be fixed as one with cylinder head and cylinder barrel, this steel ball supporting ring is on the outer side surface of the inside of cylinder head, be provided with and protrude the bump that is provided with, and this bump is to be arranged at position between axle sleeve upside and the control piston downside with the direction parallel with piston rod, is provided with hollow portion in this bump; And
Steel ball is provided with in the hollow portion of above-mentioned bump, and this steel ball is can be provided with up or down in above-mentioned hollow portion;
Wherein, on above-mentioned axle sleeve outer side surface, be provided with one of them of groove or lug boss, the downside of above-mentioned steel ball is corresponding with above-mentioned groove or lug boss, the corresponding position of upside of the front end downside of control piston and above-mentioned steel ball is provided with wherein another of above-mentioned groove or lug boss, and the summit of the bottom of groove and lug boss together support steel ball under lock state.
2, the hydraulic jack with mechanical lock according to claim 1 is characterized in that being provided with spring with the structure with certain pretightening force between the front side of the rear side of control piston and piston.
3, the hydraulic jack with mechanical lock according to claim 1, it is characterized in that wherein said control piston is made as " T " font structure, and control piston is to fixedly connected with the front end of above-mentioned big spring by the bottom rear side of this " T " font structure.
4, the hydraulic jack with mechanical lock according to claim 1 is characterized in that the shape of wherein said steel ball can be made as spherical, ellipticity or coniform wherein arbitrary.
5, the hydraulic jack with mechanical lock according to claim 1 is characterized in that being provided with between wherein said lug boss and the groove and steel ball is entered and the passage of the state position that goes out of lock, and this passage is formed by the plane of inclination of lug boss and groove.
6, the hydraulic jack with mechanical lock according to claim 1, it is characterized in that being provided with between wherein said control piston and the piston one and make the damping unit that both sides are communicated with before and after the control piston, this damping unit comprises that annulus damper portion or small damping device are wherein arbitrary.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520122793 CN2851679Y (en) | 2005-09-30 | 2005-09-30 | Hydraulic cylinder with mechanical lock |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520122793 CN2851679Y (en) | 2005-09-30 | 2005-09-30 | Hydraulic cylinder with mechanical lock |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2851679Y true CN2851679Y (en) | 2006-12-27 |
Family
ID=37585636
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520122793 Expired - Lifetime CN2851679Y (en) | 2005-09-30 | 2005-09-30 | Hydraulic cylinder with mechanical lock |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2851679Y (en) |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101782090A (en) * | 2010-03-10 | 2010-07-21 | 无锡市长江液压缸厂 | Double self locking hydraulic cylinder |
| CN102003434A (en) * | 2009-08-28 | 2011-04-06 | 罗伯特.博世有限公司 | Hydraulic component with at least two different pressure zones and at least one functional element |
| CN103438053A (en) * | 2013-09-16 | 2013-12-11 | 大连宏远气动液压船舶辅机有限公司 | Brake cylinder with intelligent positioning and clamping device |
| CN104006033A (en) * | 2014-05-09 | 2014-08-27 | 中船重工中南装备有限责任公司 | Powerful and mechanical automatic-locking hydraulic cylinder |
| CN104006032A (en) * | 2014-05-09 | 2014-08-27 | 中船重工中南装备有限责任公司 | Two-direction mechanical locking hydraulic cylinder |
| CN104373413A (en) * | 2014-10-09 | 2015-02-25 | 吴贤卜 | Mechanical self-locking oil cylinder |
| CN104652287A (en) * | 2015-02-25 | 2015-05-27 | 林同棪国际工程咨询（中国）有限公司 | Bridge pre-stress tension device |
| CN104776084A (en) * | 2015-04-02 | 2015-07-15 | 中船重工中南装备有限责任公司 | Powerful mechanical self-locking hydraulic cylinder |
| CN104776085A (en) * | 2015-04-02 | 2015-07-15 | 中船重工中南装备有限责任公司 | Buffered powerful machine self-locking hydraulic cylinder |
| CN106762939A (en) * | 2016-12-06 | 2017-05-31 | 泸州长江液压密封件有限公司 | A kind of hydraulic structure for controlling clamping drill bit of drilling machine |
| CN107299923A (en) * | 2017-08-11 | 2017-10-27 | 泸州长信液压机械制造有限公司 | The tight device of mechanical lock of hydraulic cylinder, mechanical locking hydraulic jack and its locking method |
| CN107806458A (en) * | 2016-09-08 | 2018-03-16 | 湖北江山液压科技有限公司 | A kind of mechanical self-latching tightly locking hydraulic cylinder |
| CN112814970A (en) * | 2021-03-08 | 2021-05-18 | 天津东来高新科技有限公司 | Self-locking cylinder with retraction function |
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2005
- 2005-09-30 CN CN 200520122793 patent/CN2851679Y/en not_active Expired - Lifetime
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102003434A (en) * | 2009-08-28 | 2011-04-06 | 罗伯特.博世有限公司 | Hydraulic component with at least two different pressure zones and at least one functional element |
| CN101782090A (en) * | 2010-03-10 | 2010-07-21 | 无锡市长江液压缸厂 | Double self locking hydraulic cylinder |
| CN103438053A (en) * | 2013-09-16 | 2013-12-11 | 大连宏远气动液压船舶辅机有限公司 | Brake cylinder with intelligent positioning and clamping device |
| CN103438053B (en) * | 2013-09-16 | 2015-12-23 | 大连宏远气动液压船舶辅机有限公司 | There is the brake cylinder of intelligent positioning clamp device |
| CN104006032B (en) * | 2014-05-09 | 2016-01-20 | 中船重工中南装备有限责任公司 | The locked oil hydraulic cylinder of a kind of two-way mechanical |
| CN104006033A (en) * | 2014-05-09 | 2014-08-27 | 中船重工中南装备有限责任公司 | Powerful and mechanical automatic-locking hydraulic cylinder |
| CN104006032A (en) * | 2014-05-09 | 2014-08-27 | 中船重工中南装备有限责任公司 | Two-direction mechanical locking hydraulic cylinder |
| CN104373413A (en) * | 2014-10-09 | 2015-02-25 | 吴贤卜 | Mechanical self-locking oil cylinder |
| CN104652287A (en) * | 2015-02-25 | 2015-05-27 | 林同棪国际工程咨询（中国）有限公司 | Bridge pre-stress tension device |
| CN104652287B (en) * | 2015-02-25 | 2016-06-22 | 林同棪国际工程咨询（中国）有限公司 | Bridge prestress tensioning equipment |
| CN104776085A (en) * | 2015-04-02 | 2015-07-15 | 中船重工中南装备有限责任公司 | Buffered powerful machine self-locking hydraulic cylinder |
| CN104776084A (en) * | 2015-04-02 | 2015-07-15 | 中船重工中南装备有限责任公司 | Powerful mechanical self-locking hydraulic cylinder |
| CN107806458A (en) * | 2016-09-08 | 2018-03-16 | 湖北江山液压科技有限公司 | A kind of mechanical self-latching tightly locking hydraulic cylinder |
| CN107806458B (en) * | 2016-09-08 | 2024-04-30 | 中国兵器工业集团江山重工研究院有限公司 | Mechanical self-locking anti-loose hydraulic cylinder |
| CN106762939A (en) * | 2016-12-06 | 2017-05-31 | 泸州长江液压密封件有限公司 | A kind of hydraulic structure for controlling clamping drill bit of drilling machine |
| CN107299923A (en) * | 2017-08-11 | 2017-10-27 | 泸州长信液压机械制造有限公司 | The tight device of mechanical lock of hydraulic cylinder, mechanical locking hydraulic jack and its locking method |
| CN112814970A (en) * | 2021-03-08 | 2021-05-18 | 天津东来高新科技有限公司 | Self-locking cylinder with retraction function |
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