CN102734262B - Driving cylinder and crane and engineering machinery with driving cylinder - Google Patents

Driving cylinder and crane and engineering machinery with driving cylinder Download PDF

Info

Publication number
CN102734262B
CN102734262B CN201210241263.2A CN201210241263A CN102734262B CN 102734262 B CN102734262 B CN 102734262B CN 201210241263 A CN201210241263 A CN 201210241263A CN 102734262 B CN102734262 B CN 102734262B
Authority
CN
China
Prior art keywords
cylinder
locking
drive
block
hooking
Prior art date
Application number
CN201210241263.2A
Other languages
Chinese (zh)
Other versions
CN102734262A (en
Inventor
詹纯新
刘权
张建军
汤美林
罗贤智
李英智
郭纪梅
Original Assignee
中联重科股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 中联重科股份有限公司 filed Critical 中联重科股份有限公司
Priority to CN201210241263.2A priority Critical patent/CN102734262B/en
Publication of CN102734262A publication Critical patent/CN102734262A/en
Application granted granted Critical
Publication of CN102734262B publication Critical patent/CN102734262B/en

Links

Abstract

The invention provides a driving cylinder and a crane and engineering machinery with the driving cylinder. The driving cylinder comprises a main cylinder barrel (21), a main piston rod (26) and a locking device, wherein the locking device is arranged outside the driving cylinder and comprises a locking state and an unlocking state; at the locking state, the main piston rod (26) is locked in a locking position relative to the main cylinder barrel (21); and at the unlocking state, the main piston rod (26) can stretch freely inside the main cylinder barrel (21). According to the driving cylinder, the locking and unlocking of the driving cylinder are realized by the locking device arranged outside the driving cylinder, thereby facilitating maintenance on the locking device, and allowing the working state of the locking device to be detected and observed easily.

Description

Drive cylinder and there is hoist and the engineering machinery of this drive cylinder

Technical field

The present invention relates to engineering machinery field, more specifically, relate to a kind of drive cylinder and there is hoist and the engineering machinery of this drive cylinder.

Background technique

Along with the development of the industries such as wind-powered electricity generation, nuclear power, chemical industry, component are modularization and maximization day by day, increasing to the demand of hoister in large tonnage, require that lifting height of crane and lifted load increase, therefore conventional telescopic arm crane is just towards maximization future development.But high lifting altitude and heavy lifted load are by larger for the component caused on principal arm shear direction, make the amount of deflection of principal arm in luffing plane larger, and the principal arm less stable of plane of rotation, even if by increasing principal arm length, optimize principal arm shape, increase principal arm sectional dimension, improve the thinkings such as the principal arm strength of materials also cannot solve the problem, therefore need by auxiliary device, principal arm lifting altitude and lifting capacity is promoted by improving arm force-bearing situation, to meet the requirement of market to hoister in large tonnage, thus the telescopic arm crane with super lifting device that has been born.But current super lifting device still exists some problems and is further improved and promotes, wherein, with the matching used compensating cylinder of super lifting device in order to its size of bearing capacity and weight realizing necessity is comparatively large, and the oil cylinder with latch functions should be adopted.

Be disclose a kind of mechanical self-locking hydro cylinder in the Chinese utility model patent of CN201412409Y at Authorization Notice No., wherein, when rear oil inlet hole oil-feed, piston rod is retracted, after nut enters positioning block, nut promotes steel ball and floats, after piston rod movement to steel ball blocks briquetting, briquetting stops mobile, piston rod drives nut to compress the first spring and the second spring continues to left movement, steel ball starts to fall in the dovetail groove of nut, and briquetting is also moved to the left under the effect of the first spring and downward pressing steel balls, when steel ball is fallen in dovetail groove completely, piston encounters the stop motion of cylinder bottom piston rod, briquetting is also shut with by steel ball top, steel ball cannot float, be stuck in dovetail groove, thus play automatic locking effect, current oil inlet hole oil-feed, hydraulic drive piston movement, spacing due to Steel Cable Baffle Ring while piston moves right, drive briquetting to move together, when motion certain distance, steel ball moves along piston rod radially outward, and unlock, piston rod stretches out.

But mechanical self-locking hydro cylinder disclosed in above prior art has two shortcomings: 1, self-locking mechanism is all inner at oil cylinder, not easily detects and observes; 2, self-locking mechanism bearing load is limited, is not suitable for the occasion that carrying is larger.

Summary of the invention

The object of the invention is to provide a kind of and has Locking Device and Locking Device is easy to safeguard, state is easy to the drive cylinder detecting and observe and hoist and the engineering machinery with this drive cylinder.

The invention provides a kind of drive cylinder, comprise: master cylinder cylinder and main piston rod, drive cylinder also comprises Locking Device, be arranged at drive cylinder outside, Locking Device comprises lockup state and released state, be locked in lock position at lockup state main piston rod relative to master cylinder cylinder, at released state, main piston rod can in master cylinder cylinder free-extension.

Further, lock position is the full reduced position in main piston rod whole retraction master cylinder cylinder.

Further, Locking Device comprises: the first hooking part, is arranged on master cylinder cylinder; Second hooking part, is arranged on main piston rod, and the second hooking part matches with the first hooking part, and Locking Device is in lockup state, and the second hooking part is removed with the first hooking part and coordinated, and Locking Device is in released state.

Further, Locking Device also comprises locking drive unit, and wherein, locking drive unit to be arranged on master cylinder cylinder and to be connected with the first hooking part, to match and remove cooperation for driving the first hooking part with the second hooking part.

Further, the first hooking part is articulated with the one end near main piston rod on master cylinder cylinder; Second hooking part is fixed on the one end away from master cylinder cylinder on main piston rod; Locking drive unit is connected with master cylinder cylinder and the first hooking part respectively.

Further, the first hooking part comprises block, block and master cylinder cylinder hinged and comprise draw-in groove; Second hooking part comprises for the projection with draw-in groove snap-fit engagement; Locking drive unit comprises locking drive cylinder, and locking drive cylinder comprises locking cylinder barrel and lockup piston bar, and one in locking cylinder barrel and lockup piston bar hinged with master cylinder cylinder, and another and block are hinged.

Further, two projections are symmetrically arranged in main piston rod both sides; Block comprises two draw-in grooves be equipped with two projections respectively.

Further, projection comprises the first arc surface away from the side of master cylinder cylinder; The draw-in groove of block comprises the second arc surface for coordinating with the first arc surface.

Further, block comprises block inclined-plane, and block inclined-plane is arranged at the outer surface of block near main piston rod side; Projection comprises the projection inclined-plane coordinated slidably with block inclined-plane, and projection inclined-plane is arranged at projection on the surface of master cylinder cylinder side.

Further, drive cylinder also comprises the detection device for the lockup state and/or released state detecting Locking Device.

Further, detection device comprises: the first detection unit, for detecting the lockup state of Locking Device; Second detection unit, for detecting the released state of Locking Device.

Further, drive cylinder also comprises the detection device for the lockup state and/or released state detecting Locking Device.

Further, detection device comprises: the first Detecting element, is arranged at the outer wall of master cylinder cylinder; First sense cell, is arranged on block, and when Locking Device is in released state, the first sense cell is in the induction zone of the first Detecting element.

Further, detection device comprises: the second Detecting element, is arranged on block; Second sense cell, is arranged on main piston rod, and when Locking Device is in the lock state, the second sense cell is in the induction zone of the second Detecting element.

Present invention also offers a kind of hoist, comprise super lifting device and be arranged at the compensating cylinder on super lifting device, compensating cylinder is aforesaid drive cylinder.

Present invention also offers a kind of engineering machinery, comprise aforesaid drive cylinder.According to drive cylinder of the present invention, by realizing locking and the unblock of drive cylinder at the Locking Device of drive cylinder outer installment, thus be convenient to the maintenance work of Locking Device, and make the working state of Locking Device easily detect and observe.

Accompanying drawing explanation

The accompanying drawing forming a application's part is used to provide a further understanding of the present invention, and schematic description and description of the present invention, for explaining the present invention, does not form inappropriate limitation of the present invention.In the accompanying drawings:

Fig. 1 is according to the structural representation with the embodiment of the hoist of compensating cylinder of the present invention;

Fig. 2 is the structural representation of the drive cylinder according to the first embodiment of the present invention; And

Fig. 3 is the structural representation of drive cylinder according to a second embodiment of the present invention.

Embodiment

Below with reference to the accompanying drawings and describe the present invention in detail in conjunction with the embodiments.It should be noted that, when not conflicting, the embodiment in the application and the feature in embodiment can combine mutually.

In the examples below, only for the hoist with super lifting device and compensating cylinder and the compensating cylinder wherein applied, drive cylinder of the present invention, hoist and engineering machinery are described, but the present invention is not limited to this, such as, drive cylinder also can be pneumatic cylinder, drive cylinder of the present invention also can be applied in the engineering machinery such as such as pump truck and other all be suitable for applying the occasion of the drive cylinder with auto-lock function.

Drive cylinder of the present invention comprises master cylinder cylinder, main piston rod and Locking Device.Locking Device is arranged at outside drive cylinder, and Locking Device comprises lockup state and released state, is locked in lock position at lockup state main piston rod relative to master cylinder cylinder, at released state, main piston rod can in master cylinder cylinder free-extension.Preferably, lock position is the full reduced position in main piston rod whole retraction master cylinder cylinder.According to drive cylinder of the present invention, by realizing locking and the unblock of drive cylinder at the Locking Device of drive cylinder outer installment, thus be convenient to the maintenance work of Locking Device, and make the working state of Locking Device easily detect and observe.Lock position is when Locking Device is in lockup state, at least part of external pull can be born by Locking Device and drive cylinder itself is not stressed or lacks stressed, make drive cylinder can carry larger load when lock position, be conducive to reducing drive cylinder size, alleviate drive cylinder weight.

The compensating cylinder 2 that hoist of the present invention mainly comprises super lifting device 9 and is arranged on super lifting device 9, wherein compensating cylinder 2 have employed drive cylinder of the present invention.

Fig. 1 shows according to a specific embodiment with the hoist of compensating cylinder of the present invention.As shown in Figure 1, hoist comprises wire rope 1, compensating cylinder 2, pulley 3, rear tensioning means 4, basic arm 5, turntable 6, amplitude oil cylinder 7, super lift winch mechanism 8, super lifting device 9 and principal arm head 10 etc.It is anterior that super lifting device 9 is arranged on basic arm 5.Wire rope 1 connects compensating cylinder 2 by pulley 3 one end, and one end connects super lift winch mechanism 8.Rear tensioning means 4 one end is connected with super lifting device 9, and the other end connects afterbody or the turntable 6 of basic arm 5.Amplitude oil cylinder 7 one end is connected with basic arm 5, and the other end is connected with super lifting device 9, super lifting device 9 and basic arm 5 can be the level of state starts luffing 90 ° extremely with basic arm in vertical state.The hoist of this specific embodiment is convenient to the maintenance work of Locking Device, and makes the working state of Locking Device easily detect and observe; When compensating cylinder 2 stretches, the outside pulling force to main piston rod is born by the pressure of compensating cylinder 2 self, when compensating cylinder locking, Locking Device can be relied on to bear external pull by reasonably designing, therefore carry little feature during the large but locking of carrying when this compensating cylinder has flexible, may be used in theory carrying very large occasion.

Below the structure of compensating cylinder 2 is specifically described.

Fig. 2 shows the drive cylinder of the first embodiment of the present invention as compensating cylinder 2.Wherein drive cylinder comprises master cylinder cylinder 21, locking drive cylinder 22, block 23, fixing pin 24, projection 25 and main piston rod 26.

In the drive cylinder of the first embodiment, Locking Device have employed the first hooking part comprising and being arranged on master cylinder cylinder 21 and the bayonet unit being arranged at the second hooking part on main piston rod 26.Second hooking part matches with the first hooking part, and drive cylinder is in lockup state, and the second hooking part is removed with the first hooking part and coordinated, and drive cylinder is in released state.In a first embodiment, when main piston rod 26 is in full reduced position, Locking Device is in lockup state.

Wherein Locking Device also comprises locking drive unit, and locking drive unit to be arranged on master cylinder cylinder 21 and to be connected with the first hooking part, to match or remove cooperation for driving the first hooking part with the second hooking part.Preferably, the first hooking part is articulated with the one end near main piston rod 26 on master cylinder cylinder 21; Second hooking part is fixed on one end away from master cylinder cylinder 21 of main piston rod 26; And locking drive unit is connected with master cylinder cylinder 21 and the first hooking part respectively.As shown in Figure 2, in a first embodiment particularly, the first hooking part comprises block 23, and block 23 comprises draw-in groove 233; Second hooking part comprises for the projection 25 with draw-in groove 233 snap-fit engagement, the setting that projection 25 matches with draw-in groove 233.Locking drive unit comprises locking drive cylinder 22.Locking drive cylinder 22 comprises locking cylinder barrel and lockup piston bar, wherein, locking cylinder barrel away from one end of lockup piston bar by otic placode and hinge on master cylinder cylinder 21, lockup piston bar away from one end of locking cylinder barrel and the second joint 232 of block 23 hinged.Certainly, the mounting point of locking cylinder barrel and lockup piston bar can be exchanged.First joint 231 of block 23 is hinged by fixing pin 24 and master cylinder cylinder 21.Block 23 can rotate freely around fixing pin 24.The flexible of lockup piston bar of locking drive cylinder 22 can drive block 23 to rotate around fixing pin 24.When the lockup piston bar of locking drive cylinder 22 is retracted into certain length, namely drive block 23 and projection 25 to depart from, now main piston rod 26 can freely extend, and Locking Device is in released state.

Preferably, projection 25 comprises the first arc surface away from the side of master cylinder cylinder 21, and the surface that the draw-in groove 233 of block 23 coordinates with the first arc surface comprises the second arc surface, the first arc surface and the second arc surface can accurately engage, thus are conducive to Locking Device and operate the locking of main piston rod 26.

Further preferably, include the projection 25 that two are symmetrically arranged in main piston rod 26 axial direction both sides in a first embodiment.Corresponding, block 23 comprises two draw-in grooves 233 be equipped with two projections 25 respectively.Be arranged symmetrically with projection and draw-in groove is conducive to Locking Device uniform force, and enhance lockup capacity.

As shown in Figure 2, block 23 also comprises block inclined-plane 234, is arranged at the outer surface of block 23 near main piston rod 26 side.Accordingly, projection 25 comprises the projection inclined-plane 251 coordinated slidably with block inclined-plane 234, is arranged at projection 25 on the surface of master cylinder cylinder 21 side.When main piston rod 26 retract to projection 25 contact with block 23 time, due to block inclined-plane 234 and the setting on projection inclined-plane 251, and coordinate slidably therebetween, projection 25 gives block 23 and applies the power pushed open by block 23, this can impel the lockup piston bar of locking drive cylinder 22 to bounce back, block 23 is opened, freely fall under the thrust of locking drive cylinder 22 when projection 25 arrives relevant position backstop 23, projection 25 is made to enter draw-in groove 233 completely, Locking Device is in lockup state, thus main piston rod 26 relative to master cylinder cylinder 21 by locking, pulling force now suffered by drive cylinder is extruded by block 23 and projection 25 and bears, drive cylinder system does not carry.

The Locking Device of above embodiment should not be construed as limiting drive cylinder of the present invention.Such as, Locking Device can be formed with the principle of electromagnetic mode.When Locking Device carries out locking with bayonet unit, the first hooking part and the second hooking part are also not limited to the form that the draw-in groove on above concrete block matches with projection, and can have various change.In addition, locking drive unit is also not limited to locking drive cylinder, such as, also can be electric locking device, is being convenient to manual operation and the little place of drive cylinder, locking drive unit even not necessarily, and only relies on and manually makes coordinate between block with projection or remove cooperation.

The drive cylinder of this first embodiment have in telescopic process carry less but full reduced after can bear the feature of larger load, therefore can the bearing structure of local strengthening drive cylinder, and making drive cylinder can make less compared with same specification drive cylinder, quality is lighter, is convenient to fabrication and installation.

Fig. 3 is the structural representation of drive cylinder according to a second embodiment of the present invention.The difference of this second embodiment and the first embodiment is that drive cylinder also comprises the detection device for the lockup state and/or released state detecting Locking Device.Below only the difference of the second embodiment and the first embodiment is described, for part identical therebetween no longer repeated description.

In second embodiment, detection device comprises the first and second two detection units.Wherein, the first detection unit is for detecting the lockup state of Locking Device; Second detection unit is for detecting the released state of Locking Device.Those skilled in the art can need the information detected only to select one of them detection unit.

Particularly, the first detection unit comprises the first Detecting element 27 and the first sense cell 28.First Detecting element 27 is arranged at master cylinder cylinder 21 outer wall.First sense cell 28 is arranged on block 23, and when Locking Device is in released state, the first sense cell 28 is in the induction zone of the first Detecting element 27.Second detection unit comprises the second Detecting element 29 and the second sense cell 30.Second Detecting element 29 is arranged on block 23.Second sense cell 30 is arranged on main piston rod 26 and Locking Device is in lockup state time, the second sense cell 30 is in the induction zone of the second Detecting element 29.

When first Detecting element 27 detects the first sense cell 28, show that block 23 is removed with projection 25 and coordinate, Locking Device is in released state, and main piston rod 26 can freely stretch out.When the second Detecting element 29 detects the second sense cell 30, show that block 23 coordinates with projection 25, Locking Device is in lockup state, and main piston rod 26, cannot be stretched out by locking relative to master cylinder cylinder 21.

When main piston rod 26 retracts to certain position, control system detects the signal of the first Detecting element 27, and Locking Device is in released state, and main piston rod 26 can be retracted; After main piston rod 26 is retracted, the lockup piston bar that control system controls locking drive cylinder 22 stretches out, and makes block 23 rotate around fixing pin 24 and coordinate with projection 25.When control system can detect the signal of the first Detecting element 29, now show that Locking Device is in lockup state, main piston rod 26 is by locking, and the pulling force now suffered by drive cylinder is extruded by block 23 and projection 25 and bears, and drive cylinder does not carry.

The drive cylinder of the second embodiment opens and closes all has detection device to confirm, prevention projection bumps against with block, and carries when can avoid locking non-because of main piston rod and accidents caused.Coordinate to be separately positioned on projection inclined-plane on projection and block and block inclined-plane, also can avoid causing block do not open and projection and block accidents occur because of the signal fault of detection device.

It should be noted that, detection device in second embodiment can for can identify coordinating or removing any type of detection device coordinated between block 23 with projection 25, such as above supporting Detecting element and sense cell can integrate, and are replaced by a kind of Detecting element.

As can be seen from the above description, the above embodiments of the present invention achieve following technique effect:

By realizing locking and the unblock of drive cylinder at the Locking Device of drive cylinder outer installment, thus be convenient to the maintenance work of Locking Device, and make the working state of Locking Device easily detect and observe.In lock position as in full reduced position to main piston rod locking, when oil cylinder locking, at least part of external pull can be born by Locking Device and drive cylinder itself is not stressed or lacks stressed, make drive cylinder can carry larger load when locking, be conducive to reducing drive cylinder size, alleviate drive cylinder weight.Further, by the block that cooperatively interacts in drive cylinder outer installment and projection, and the promotion of locking drive cylinder is set or pulls block, make itself and projection clamping or depart to realize locking and the unblock of drive cylinder, when the Locking Device locking of drive cylinder, only rely on a block to bear external pull with contacting of projection, and drive cylinder itself does not stress, make drive cylinder can carry larger load when full reduced, be conducive to subtracting drive cylinder size, alleviate drive cylinder weight.Further, lockup state and released state that detection device can detect Locking Device are set, thus the non-locking of main piston rod can be avoided and have an accident.Again owing to being provided with block inclined-plane and projection inclined-plane, effectively prevent block and projection accidents.

The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.

Claims (14)

1. a drive cylinder, comprise: master cylinder cylinder (21) and main piston rod (26), described drive cylinder also comprises Locking Device, be arranged at described drive cylinder outside, described Locking Device comprises lockup state and released state, described in described lockup state, main piston rod (26) is locked in lock position relative to described master cylinder cylinder (21), at described released state, described main piston rod (26) can in described master cylinder cylinder (21) free-extension, it is characterized in that, described Locking Device comprises:
First hooking part, be arranged on described master cylinder cylinder (21), described first hooking part comprises block (23), and described block (23) and described master cylinder cylinder (21) are hinged and comprise draw-in groove (233);
Second hooking part, be arranged on described main piston rod (26), described second hooking part matches with described first hooking part, and described Locking Device is in described lockup state, described second hooking part is removed with described first hooking part and is coordinated, and described Locking Device is in described released state, and described second hooking part comprises for the projection (25) with described draw-in groove (233) snap-fit engagement; Wherein,
Described projection (25) comprises the first arc surface away from the side of described master cylinder cylinder (21), and the draw-in groove (233) of described block (23) comprises the second arc surface for coordinating with described first arc surface.
2. drive cylinder according to claim 1, is characterized in that, described lock position is the full reduced position in described main piston rod (26) all master cylinder cylinder (21) described in retraction.
3. drive cylinder according to claim 1, is characterized in that, described Locking Device also comprises locking drive unit, wherein,
Described locking drive unit is arranged at described master cylinder cylinder (21) and goes up and be connected with described first hooking part, matches for driving described first hooking part and removes cooperation with described second hooking part.
4. drive cylinder according to claim 3, is characterized in that,
Described first hooking part is articulated with the upper one end near described main piston rod (26) of described master cylinder cylinder (21);
Described second hooking part is fixed on the one end away from described master cylinder cylinder (21) on described main piston rod (26);
Described locking drive unit is connected with described master cylinder cylinder (21) and described first hooking part respectively.
5. drive cylinder according to claim 4, it is characterized in that, described locking drive unit comprises locking drive cylinder (22), described locking drive cylinder (22) comprises locking cylinder barrel and lockup piston bar, one in described locking cylinder barrel and lockup piston bar hinged with described master cylinder cylinder (21), and another and described block (23) are hinged.
6. drive cylinder according to claim 5, is characterized in that,
Two described projections (25) are symmetrically arranged in described main piston rod (26) both sides;
Described block (23) comprises two draw-in grooves (233) be equipped with two described projections (25) respectively.
7. drive cylinder according to claim 1, is characterized in that,
Described block (23) comprises block inclined-plane (234), and described block inclined-plane (234) is arranged at the outer surface of described block near described main piston rod (26) side;
Described projection (25) comprises the projection inclined-plane (251) coordinated slidably with described block inclined-plane (234), and described projection inclined-plane (251) is arranged at described projection (25) on the surface of described master cylinder cylinder (21) side.
8. drive cylinder according to claim 1 and 2, is characterized in that, described drive cylinder also comprises the detection device for the lockup state and/or released state detecting described Locking Device.
9. drive cylinder according to claim 8, is characterized in that, described detection device comprises:
First detection unit, for detecting the lockup state of described Locking Device;
Second detection unit, for detecting the released state of described Locking Device.
10. drive cylinder according to claim 5, is characterized in that, described drive cylinder also comprises the detection device for the lockup state and/or released state detecting described Locking Device.
11. drive cylinders according to claim 10, is characterized in that, described detection device comprises:
First Detecting element (27), is arranged at the outer wall of described master cylinder cylinder (21);
First sense cell (28), be arranged on described block (23), and described Locking Device is when being in described released state, described first sense cell (28) is in the induction zone of described first Detecting element (27).
12. drive cylinders according to claim 10, is characterized in that, described detection device comprises:
Second Detecting element (29), is arranged on described block (23);
Second sense cell (30), be arranged on described main piston rod (26), and described Locking Device is when being in described lock state, described second sense cell (30) is in the induction zone of described second Detecting element (29).
13. 1 kinds of hoists, comprise super lifting device (9) and be arranged at the compensating cylinder (2) on described super lifting device (9), it is characterized in that, described compensating cylinder (2) is the drive cylinder according to any one of claim 1 to 12.
14. 1 kinds of engineering machinery, comprise drive cylinder, it is characterized in that, described drive cylinder is the drive cylinder according to any one of claim 1 to 12.
CN201210241263.2A 2012-07-12 2012-07-12 Driving cylinder and crane and engineering machinery with driving cylinder CN102734262B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201210241263.2A CN102734262B (en) 2012-07-12 2012-07-12 Driving cylinder and crane and engineering machinery with driving cylinder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201210241263.2A CN102734262B (en) 2012-07-12 2012-07-12 Driving cylinder and crane and engineering machinery with driving cylinder

Publications (2)

Publication Number Publication Date
CN102734262A CN102734262A (en) 2012-10-17
CN102734262B true CN102734262B (en) 2014-12-24

Family

ID=46990343

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201210241263.2A CN102734262B (en) 2012-07-12 2012-07-12 Driving cylinder and crane and engineering machinery with driving cylinder

Country Status (1)

Country Link
CN (1) CN102734262B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104632781A (en) * 2014-12-26 2015-05-20 徐州重型机械有限公司 Expanding oil cylinder, super-lifting device, crane and method

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103434952B (en) * 2013-09-11 2015-10-28 徐州重型机械有限公司 One has surpassed tensioner lockable mechanism and hoisting crane
CN107830010B (en) * 2017-10-29 2019-10-25 泉州市佑森机械科技有限公司 A kind of cylinder stroke is obstructed positioning device
CN107642517B (en) * 2017-10-29 2019-12-06 日照轻创知识产权服务中心 Cylinder stroke hindered control device for agricultural machinery
CN107690905B (en) * 2017-10-29 2019-09-06 潍坊学院 Agricultural transplanter seedling clipping machine structure cylinder location structure
CN110683471A (en) * 2019-11-27 2020-01-14 江苏新迈机械有限公司 Anti-retraction suspension arm and crane

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2515287A (en) * 1942-12-18 1950-07-18 Olaer Patent Co Locking device for pressure fluid motors
US3789742A (en) * 1972-11-16 1974-02-05 Int Harvester Co Hydraulic cylinder latch
US5009566A (en) * 1989-10-20 1991-04-23 Clark Equipment Company Retractable boom stop
US6149374A (en) * 1998-09-25 2000-11-21 Caterpillar S.A.R.L. Releasable locking mechanism for a liftarm of a machine
CN101131170A (en) * 2006-08-26 2008-02-27 夏培根 Gas cylinder or oil cylinder with self-locking device
CN101857176A (en) * 2010-07-05 2010-10-13 三一汽车起重机械有限公司 Super hoisting device and telescopic-boom hoisting equipment with same

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB0308409D0 (en) * 2003-04-11 2003-05-21 Hill Ian Locking mechanism for a linear actuator
CA2479454A1 (en) * 2004-08-30 2006-02-28 Gary Stephen Ataman Internally locking actuator with direct acting integral lock sensor
US8726622B2 (en) * 2010-12-16 2014-05-20 Cnh Industrial America Llc Feeder arm safety stand

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2515287A (en) * 1942-12-18 1950-07-18 Olaer Patent Co Locking device for pressure fluid motors
US3789742A (en) * 1972-11-16 1974-02-05 Int Harvester Co Hydraulic cylinder latch
US5009566A (en) * 1989-10-20 1991-04-23 Clark Equipment Company Retractable boom stop
US6149374A (en) * 1998-09-25 2000-11-21 Caterpillar S.A.R.L. Releasable locking mechanism for a liftarm of a machine
CN101131170A (en) * 2006-08-26 2008-02-27 夏培根 Gas cylinder or oil cylinder with self-locking device
CN101857176A (en) * 2010-07-05 2010-10-13 三一汽车起重机械有限公司 Super hoisting device and telescopic-boom hoisting equipment with same

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104632781A (en) * 2014-12-26 2015-05-20 徐州重型机械有限公司 Expanding oil cylinder, super-lifting device, crane and method
CN104632781B (en) * 2014-12-26 2017-02-01 徐州重型机械有限公司 Expanding oil cylinder, super-lifting device, crane and method

Also Published As

Publication number Publication date
CN102734262A (en) 2012-10-17

Similar Documents

Publication Publication Date Title
CN202284125U (en) Bolt type telescopic boom and telescopic boom crane
CN102923584B (en) Intelligent lorry crane with intelligent operation control system
CN103449301B (en) Overturning and lifting method for major-diameter superheavy end socket
CN203143969U (en) Lifting fixed-column arm crane
CN100400409C (en) Hydraulic automatic balanced crane installment
CN201351099Y (en) Oil cylinder direct ejection gantry automobile lifter
CN201466547U (en) Automatic butting and disconnecting device for supplying power for trolley line of container rubber-tyred gantry crane
CN103407912A (en) Single-cylinder plug pin type telescopic arm, crane and telescoping method of single-cylinder plug pin type telescopic arm
CN203938364U (en) For the suspender of container in hoisting status
CN202156898U (en) Hand-push type hydraulic pushing rod lifting and hoisting dual-purpose forklift
US20170314346A1 (en) Automatic auxiliary workover rig
CN109747849A (en) A kind of small-sized patrol unmanned motor platform release recovery system
CN104724643B (en) Jack-up system and its jack-up construction method under a kind of pair of oil cylinder
CN206088920U (en) Construction scaffold
CN102241363A (en) Rail clamping device special for wind load-resisting and overturn-preventing crane
CN102153023A (en) Safety pin interlocking device for crane, single cylinder safety pin type telescopic arm and crane
CN203284042U (en) Hoisting tool for grinding roller of roller-disk type coal mill
CN107059829A (en) A kind of hydraulic bolt lowering or hoisting gear and self-elevating ocean platform continuously lifted
CN104773653B (en) A kind of crane single cylinder bolt telescopic control method, system and contilever structure
CN102126678B (en) Crane and super-lifting and tensioning control system and method thereof
CN201817188U (en) Novel sling
CN107128792B (en) A kind of ship heavy lift derrick
CN102198914A (en) Working platform for installing wind generating set
CN104454781A (en) Locking oil cylinder, oil cylinder control system and climbing fire-fighting truck or fire-fighting operation vehicle
CN201770423U (en) Automatic power extracting system for rubber-tyred container gantry crane

Legal Events

Date Code Title Description
PB01 Publication
C06 Publication
SE01 Entry into force of request for substantive examination
C10 Entry into substantive examination
GR01 Patent grant
C14 Grant of patent or utility model