CN105257627A - Hydraulic cylinder and engineering machinery - Google Patents
Hydraulic cylinder and engineering machinery Download PDFInfo
- Publication number
- CN105257627A CN105257627A CN201510834188.4A CN201510834188A CN105257627A CN 105257627 A CN105257627 A CN 105257627A CN 201510834188 A CN201510834188 A CN 201510834188A CN 105257627 A CN105257627 A CN 105257627A
- Authority
- CN
- China
- Prior art keywords
- cylinder body
- inner cylinder
- outer cylinder
- fluid port
- hydraulic fluid
- Prior art date
- Legal status (The legal status 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 status listed.)
- Granted
Links
Landscapes
- Actuator (AREA)
Abstract
The invention relates to the hydraulic field, and discloses a hydraulic cylinder and engineering machinery. The hydraulic cylinder comprises an outer cylinder and an inner cylinder component, wherein the inner cylinder component is arranged in the outer cylinder, and is coaxial with an inner cylinder; the outer cylinder comprises a first end and a second end in the axial direction; the inner cylinder component can extend or shrink in the axial direction from the second end; and the hydraulic cylinder further comprises a locking mechanism for realizing axial mechanical locking for the inner cylinder component and the outer cylinder. The hydraulic cylinder is additionally provided with the locking mechanism for realizing mechanical locking of the outer cylinder and the inner cylinder component; and compared with a hydraulic locking mode, the mechanical locking is higher in reliability.
Description
Technical field
The present invention relates to Hydraulic Field, particularly, relate to a kind of oil hydraulic cylinder and the engineering machinery with this oil hydraulic cylinder.
Background technique
For oil hydraulic cylinder, when such as piston rod jacking etc. oil hydraulic cylinder stretch out state under, usually under oil hydraulic cylinder being locked in expection working state by hydraulic lock, namely under oil hydraulic cylinder loading condition, in order to prevent seal fails or in let out and cause oil cylinder to sink, usually in hydraulic system, use hydraulic lock to lock oil hydraulic cylinder, but the reliability due to hydraulic lock is subject to the restriction of many factors, in the oil hydraulic cylinder of long-time continuous load, its reliability can reduce relatively especially, therefore there is disabled status in hydraulic lock, the reliability of system is reduced, there is the risk of the accident of meeting accident, and also there is certain internal leakage risk in hydraulic lock, during long-time continuous loaded work piece, due to the internal leakage of hydraulic system, oil hydraulic cylinder all has certain sinking, cause hydraulic equipment unstability.
Summary of the invention
The object of this invention is to provide a kind of oil hydraulic cylinder and there is the engineering machinery of this oil hydraulic cylinder, by mechanical caging mode, described oil hydraulic cylinder realizes that oil hydraulic cylinder is locked in a certain operating mode under, there is higher reliability.
To achieve these goals, the invention provides a kind of oil hydraulic cylinder, this oil hydraulic cylinder comprises outer cylinder body and inner cylinder body assembly, it is interior and coaxial with described inner cylinder body that described inner cylinder body assembly is set in described outer cylinder body, described outer cylinder body comprises first end and the second end vertically, described inner cylinder body assembly can stretch out vertically from described second end or retract, and this oil hydraulic cylinder also comprises the locking framework for realizing axial mechanical caging to described inner cylinder body assembly and described outer cylinder body.
Preferably, described locking framework comprises lock sleeve, this lock sleeve to be set on described inner cylinder body assembly and to be positioned at the outside of described second end of described outer cylinder body, be formed with screw thread respectively with mating with each other on the outer circumferential face of described inner cylinder body assembly and on the inner peripheral surface of described lock sleeve, lock with the axis making described lock sleeve can realize described inner cylinder body assembly and described outer cylinder body when moving to offset with described second end of described outer cylinder body relative to described inner cylinder body assembly.
Preferably, described second end of described outer cylinder body is formed with conical outer surface, and one end towards described outer cylinder body of described lock sleeve is cooperatively formed with cone-shaped inner surface.
Preferably, outstandingly on the outer circumferential face of described lock sleeve handle is formed.
Preferably, the outer circumferential face of described inner cylinder body assembly in the inner peripheral surface sealing engagement of the side corresponding with the first end of described outer cylinder body and described outer cylinder body, and is formed with described screw thread at opposite side and and has gap between the inner peripheral surface of described outer cylinder body.
Preferably, the second end of described outer cylinder body is arranged with selflubricating composite bush at inner chamber, with the outer circumferential face lubricating contact with described inner cylinder body assembly.
Preferably, described inner cylinder body assembly comprises the support cylinder body being positioned at outside, coaxial sleeve is located in described support cylinder body and the inner cylinder body that be fixedly connected with relative to described support cylinder body and coaxial sleeve are located at the piston rod in described inner cylinder body, one end of described piston rod passes from described inner cylinder body and is fixed on the first end of described outer cylinder body, the other end is connected with piston, the outer circumferential face of side passed from described inner cylinder body and described support cylinder body of described piston rod and the inner peripheral surface sealing engagement of described inner cylinder body, the outer circumferential face of described piston and the inner peripheral surface sealing engagement of described inner cylinder body also can slide axially in described inner cylinder body, thus the inner chamber of described inner cylinder body is divided into rod chamber and rodless cavity vertically successively, described inner cylinder body is formed with rodless cavity hydraulic fluid port, described outer cylinder body is formed with the first hydraulic fluid port being communicated to described support inner chamber of cylinder block at first end, described first hydraulic fluid port is connected with described rodless cavity hydraulic fluid port oil circuit, described piston rod is formed with the second hydraulic fluid port in described one end, part in described rod chamber be formed with rod chamber hydraulic fluid port and comprise the inner chamber being communicated with described second hydraulic fluid port and described rod chamber hydraulic fluid port, be connected with described rod chamber hydraulic fluid port oil circuit to make described second hydraulic fluid port.
Preferably, described inner cylinder body is removably connected with described support cylinder body in one end of the second end towards described outer cylinder body, and one end of the first end towards described outer cylinder body is provided with guide sleeve.
Preferably, described inner cylinder body is formed with coupling shaft highlightedly in one end of the second end towards described outer cylinder body, this coupling shaft and described inner cylinder body are coaxially arranged, attachment hole is formed with ordinatedly in the corresponding end of described support cylinder body, for the described coupling shaft of reception, and described inner cylinder body assembly also comprises for passing the corresponding end of described support cylinder body and the connecting pin of described coupling shaft, thus connects described inner cylinder body and described support cylinder body, and the end of described connecting pin is provided with seal plug.
Present invention also offers a kind of engineering machinery, this project machinery comprises according to oil hydraulic cylinder of the present invention.
The invention provides a kind of oil hydraulic cylinder, this oil hydraulic cylinder comprises outer cylinder body and inner cylinder body assembly, it is interior and coaxial with described inner cylinder body that described inner cylinder body assembly is set in described outer cylinder body, described outer cylinder body comprises first end and the second end vertically, described inner cylinder body assembly can stretch out vertically from described second end or retract, and this oil hydraulic cylinder also comprises the locking framework for realizing axial mechanical caging to described inner cylinder body assembly and described outer cylinder body.
Other features and advantages of the present invention are described in detail in embodiment part subsequently.
Accompanying drawing explanation
Accompanying drawing is used to provide a further understanding of the present invention, and forms a part for specification, is used from explanation the present invention, but is not construed as limiting the invention with embodiment one below.In the accompanying drawings:
Fig. 1 is the sectional drawing according to oil hydraulic cylinder of the present invention, and wherein, this oil hydraulic cylinder is in contraction state;
Fig. 2 is the sectional drawing according to oil hydraulic cylinder of the present invention, and wherein, this oil hydraulic cylinder is in the state of stretching out.
Description of reference numerals
1 outer cylinder body 2 supports cylinder body
3 guide sleeve 4 inner cylinder bodies
5 piston rod 6 supporting sleeves
7 piston 8 lock sleeves
9 connecting pin 10 seal plugs
11 handle 12 selflubricating composite bushs
13 circlip 14 coupling shafts
A first hydraulic fluid port B second hydraulic fluid port
W rodless cavity hydraulic fluid port Y rod chamber hydraulic fluid port
Embodiment
Below in conjunction with accompanying drawing, the specific embodiment of the present invention is described in detail.Should be understood that, embodiment described herein, only for instruction and explanation of the present invention, is not limited to the present invention.
In the present invention, when not doing contrary explanation, the noun of locality of use is if " left and right " is normally for shown in the drawings left and right; " inside and outside " refers to profile inside and outside relative to each parts itself, but the above-mentioned noun of locality is not limited to the present invention.
The invention provides a kind of oil hydraulic cylinder, this oil hydraulic cylinder comprises outer cylinder body 1 and inner cylinder body assembly, it is interior and coaxial with described inner cylinder body 1 that described inner cylinder body assembly is set in described outer cylinder body 1, described outer cylinder body 1 comprises first end and the second end vertically, described inner cylinder body assembly can stretch out vertically from described second end or retract, and this oil hydraulic cylinder also comprises the locking framework for realizing axial mechanical caging to described inner cylinder body assembly and described outer cylinder body 1.
In the prior art, normally by hydraulic lock, axially locking is realized to outer cylinder body and inner cylinder body, this mode reliability is poor, in the present invention, the mechanical caging of outer cylinder body and inner cylinder body assembly is realized by setting up locking framework, compared to existing hydraulic locking mode, this Mechanical locking features has higher reliability.
Wherein, it will be understood by those skilled in the art that, the described locking framework of the axial mechanical caging that can realize can have structure that plurality of optional selects and can be set to the form that is applicable to arbitrarily, such as, in the present embodiment, described locking framework comprises lock sleeve 8, this lock sleeve 8 to be set on described inner cylinder body assembly and to be positioned at the outside of described second end of described outer cylinder body 1, be formed with screw thread (can be terraced pitch thread) respectively with mating with each other on the outer circumferential face of described inner cylinder body assembly and on the inner peripheral surface of described lock sleeve 8, lock with the axis making described lock sleeve 8 can realize described inner cylinder body assembly and described outer cylinder body 1 when moving to offset with described second end of described outer cylinder body 1 relative to described inner cylinder body assembly.
In this embodiment, during specific operation, can after described inner cylinder body assembly moves to desired location relative to described outer cylinder body 1 (when namely oil hydraulic cylinder arrives demand operating mode), rotate described lock sleeve 8 relative to described inner cylinder body assembly to offset to described lock sleeve 8 with described second end of described outer cylinder body 1, thus the axis realizing described inner cylinder body assembly and described outer cylinder body 1 locks.The mode being realized axial mechanical caging by screw thread not only has the high advantage of accommodative facility, the more important thing is and can make to be formed between outer cylinder body 1 and inner cylinder body assembly to be rigidly connected, be conducive to the steady state keeping oil hydraulic cylinder for a long time, hydraulic system when avoiding inner cylinder body component load occurs and occur sinking, and causes the phenomenon of hydraulic equipment unstability to occur.
Preferably, described second end of described outer cylinder body 1 is formed with conical outer surface, and one end towards described outer cylinder body 1 of described lock sleeve 8 is cooperatively formed with cone-shaped inner surface.In this case, can also by the directing effect of conical surface, ensure the coaxial of outer cylinder body 1 and inner cylinder body assembly, particularly, the described conical outer surface of described outer cylinder body 1 and the described cone-shaped inner surface of described lock sleeve 8 are processed with identical tapering, when rotating described lock sleeve 8 and offseting with described second end of described outer cylinder body 1 to described lock sleeve 8, two conical surfaces be fitted to each other effectively can ensure the coaxality of outer cylinder body 1 and inner cylinder body assembly.
Conveniently staff rotates described lock sleeve 8, and can give prominence on the outer circumferential face of described lock sleeve 8 and be formed with handle 11, preferably, on the outer circumferential face of described lock sleeve 8,180 ° are formed with two symmetrically.
In addition, see accompanying drawing 1, the inner peripheral surface sealing engagement of outer circumferential face in the side (in Fig. 1 left side) corresponding with the first end of described outer cylinder body 1 with described outer cylinder body 1 of described inner cylinder body assembly, and be formed with described screw thread at opposite side (in Fig. 1 right side) and and between the inner peripheral surface of described outer cylinder body 1, there is gap.Such as, described sealing engagement can be obtained by arranging seal ring, and described sealing engagement can prevent the hydraulic oil of inner cylinder body assembly cavity from flowing into formation leakage and pollution between outer cylinder body 1 and inner cylinder body assembly, in addition, outer circumferential face due to inner cylinder body assembly being formed with screw thread, causing damage by being formed with double thread when gap can effectively avoid inner cylinder body assembly to slide relative to outer cylinder body 1 before making outer cylinder body 1 and inner cylinder body assembly.
Further preferably, the second end of described outer cylinder body 1 is arranged with selflubricating composite bush 12 at inner chamber, with the outer circumferential face lubricating contact with described inner cylinder body assembly, thus is conducive to inner cylinder body and sets up relative sliding between outer cylinder body 1.Further particularly, see Fig. 1, in present embodiment, supporting sleeve 6 is provided with in the inner chamber inward turning trap of outer cylinder body 1, and in the endoporus of supporting sleeve 6, press-in has selflubricating composite bush 12, and the left side of supporting sleeve 6 is provided with circlip 13, deviate from for placement selflubricating composite bush 12, supporting sleeve 6 internal housing assembly together with selflubricating composite bush 12 is played a supporting role, and is conducive to ensureing inner cylinder body assembly telescopic slide freely under very little matching gap.
For the concrete structure of inner cylinder body assembly, those skilled in the art can be set to be applicable to arbitrarily, such as, see Fig. 1, in present embodiment, described inner cylinder body assembly comprises the support cylinder body 2 being positioned at outside, coaxial sleeve is located in described support cylinder body 2 and the inner cylinder body 4 that be fixedly connected with relative to described support cylinder body 2 and coaxial sleeve are located at the piston rod 5 in described inner cylinder body 4, one end (left end in Fig. 1) of described piston rod 5 passes from described inner cylinder body 4 and described support cylinder body 2 and is fixed on the first end of described outer cylinder body 1, the other end (right-hand member in Fig. 1) is connected with piston 7, the outer circumferential face from the side that described inner cylinder body 4 passes (left side Fig. 1) of described piston rod 5 and the inner peripheral surface sealing engagement of described inner cylinder body 4 are (such as, seal ring can be provided with), the outer circumferential face of described piston 7 and the inner peripheral surface sealing engagement of described inner cylinder body 4 are (such as, can seal ring be provided with) and can slide axially in described inner cylinder body 4, thus the inner chamber of described inner cylinder body 4 is divided into rod chamber and rodless cavity vertically successively, described inner cylinder body 4 is formed with rodless cavity hydraulic fluid port W (being formed at the right-hand member of inner cylinder body 4), described outer cylinder body 4 is formed with the first hydraulic fluid port A being communicated to described support cylinder body 2 inner chamber at first end, described first hydraulic fluid port A is connected with described rodless cavity hydraulic fluid port W oil circuit, described piston rod 5 is formed with the second hydraulic fluid port B in described one end, part in described rod chamber be formed with rod chamber hydraulic fluid port Y (described piston rod 5 is being formed with rod chamber hydraulic fluid port Y near described piston 7 place) and comprise the inner chamber being communicated with described second hydraulic fluid port B and described rod chamber hydraulic fluid port Y, be connected with described rod chamber hydraulic fluid port Y oil circuit to make described second hydraulic fluid port B.
Wherein, the outer circumferential face supporting cylinder body 2 is formed with described screw thread,
Under working state, when oil hydraulic cylinder supports that cylinder body 2 stretches out, hydraulic oil enters into (the interval chamber between outer cylinder body 1 left end and inner cylinder body 2 left end) in the Seal cage of outer cylinder body 1 left end by the first hydraulic fluid port A, (chamber on the right side of piston 7) in the rodless cavity of inner cylinder body 4 is flow into again through rodless cavity hydraulic fluid port W, hydraulic fluid pressure acts in the left end face of support cylinder body 2, promote to support that cylinder body 2 and inner cylinder body 4 together stretch out outward, because piston rod 5 and piston 7 are fixed on the first end of outer cylinder body 1, when supporting that cylinder body 2 and inner cylinder body 4 stretch out, rod chamber (chamber in the left side of the piston 7) volume of inner cylinder body 4 reduces, the fluid of rod chamber flows to the second hydraulic fluid port B through rod chamber hydraulic fluid port Y and discharges.
And when supporting cylinder body 2 to reclaim, pull handle 11 and unscrew lock sleeve 8, lock sleeve 8 is backed out the right-hand member supporting cylinder body 2, as Fig. 2 position, hydraulic oil is by the second hydraulic fluid port B, flow through rod chamber hydraulic fluid port Y, enter in the rod chamber of inner cylinder body 4, hydraulic fluid pressure acts on the right inside end face of inner cylinder body 4, promote inner cylinder body 4 and support that cylinder body 2 is recycled in outer cylinder body 1, hydraulic oil in the rodless cavity of inner cylinder body 4 flows out through rodless cavity hydraulic fluid port W, is discharged, complete recovery action by the first hydraulic fluid port A.
Preferably, the conveniently dismounting of equipment, described inner cylinder body 4 is removably connected with described support cylinder body 2 in one end of the second end towards described outer cylinder body 1, and one end of the first end towards described outer cylinder body 1 is provided with guide sleeve 3, to play leading role to piston rod 5.
Further preferably, described inner cylinder body 4 is formed with coupling shaft 14 highlightedly in one end of the second end towards described outer cylinder body 1, this coupling shaft 14 is coaxially arranged with described inner cylinder body 4, attachment hole is formed with ordinatedly in the corresponding end of described support cylinder body 2, for the described coupling shaft 14 of reception, and described inner cylinder body assembly also comprises for passing the corresponding end of described support cylinder body 2 and the connecting pin 9 of described coupling shaft 14, thus connect described inner cylinder body 4 and described support cylinder body 2, and the end of described connecting pin 9 is provided with seal plug 10.
In this case, such as can float again adjustment inner cylinder body 4 and the coaxality of piston rod 5, avoid that piston rod 5 occurs and suppress curved phenomenon.
According to a further aspect in the invention, additionally provide a kind of engineering machinery, this project machinery comprises according to oil hydraulic cylinder of the present invention, and described oil hydraulic cylinder can be jacking oil hydraulic cylinder.
Below the preferred embodiment of the present invention is described in detail by reference to the accompanying drawings; but; the present invention is not limited to the detail in above-mentioned mode of execution; within the scope of technical conceive of the present invention; can carry out multiple simple variant to technological scheme of the present invention, these simple variant all belong to protection scope of the present invention.
It should be noted that in addition, each concrete technical characteristics described in above-mentioned embodiment, in reconcilable situation, can be combined by any suitable mode, in order to avoid unnecessary repetition, the present invention illustrates no longer separately to various possible compound mode.
In addition, also can carry out combination in any between various different mode of execution of the present invention, as long as it is without prejudice to thought of the present invention, it should be considered as content disclosed in this invention equally.
Claims (10)
1. an oil hydraulic cylinder, this oil hydraulic cylinder comprises outer cylinder body (1) and inner cylinder body assembly, it is interior and coaxial with described inner cylinder body (1) that described inner cylinder body assembly is set in described outer cylinder body (1), described outer cylinder body (1) comprises first end and the second end vertically, described inner cylinder body assembly can stretch out vertically from described second end or retract, it is characterized in that, this oil hydraulic cylinder also comprises the locking framework for realizing axial mechanical caging to described inner cylinder body assembly and described outer cylinder body (1).
2. oil hydraulic cylinder according to claim 1, it is characterized in that, described locking framework comprises lock sleeve (8), this lock sleeve (8) to be set on described inner cylinder body assembly and to be positioned at the outside of described second end of described outer cylinder body (1), screw thread is formed with respectively with mating with each other on the outer circumferential face of described inner cylinder body assembly and on the inner peripheral surface of described lock sleeve (8), lock with the axis making described lock sleeve (8) that described inner cylinder body assembly and described outer cylinder body (1) can be realized when moving to offset with described second end of described outer cylinder body (1) relative to described inner cylinder body assembly.
3. oil hydraulic cylinder according to claim 2, it is characterized in that, described second end of described outer cylinder body (1) is formed with conical outer surface, and one end towards described outer cylinder body (1) of described lock sleeve (8) is cooperatively formed with cone-shaped inner surface.
4. oil hydraulic cylinder according to claim 2, is characterized in that, the outer circumferential face of described lock sleeve (8) is given prominence to and is formed with handle (11).
5. oil hydraulic cylinder according to claim 2, it is characterized in that, the outer circumferential face of described inner cylinder body assembly in the inner peripheral surface sealing engagement of the side corresponding with the first end of described outer cylinder body (1) and described outer cylinder body (1), and is formed with described screw thread at opposite side and and has gap between the inner peripheral surface of described outer cylinder body (1).
6. oil hydraulic cylinder according to claim 5, is characterized in that, the second end of described outer cylinder body (1) is arranged with selflubricating composite bush (12) at inner chamber, with the outer circumferential face lubricating contact with described inner cylinder body assembly.
7. according to the oil hydraulic cylinder in claim 1-6 described in any one, it is characterized in that, described inner cylinder body assembly comprises the support cylinder body (2) being positioned at outside, coaxial sleeve is located in described support cylinder body (2) and the inner cylinder body (4) that be fixedly connected with relative to described support cylinder body (2) and coaxial sleeve are located at the piston rod (5) in described inner cylinder body (4), one end of described piston rod (5) passes from described inner cylinder body (4) and is fixed on the first end of described outer cylinder body (1), the other end is connected with piston (7), described piston rod (5) from the outer circumferential face of the side that described inner cylinder body (4) and described support cylinder body (2) pass and the inner peripheral surface sealing engagement of described inner cylinder body (4), the outer circumferential face of described piston (7) and the inner peripheral surface sealing engagement of described inner cylinder body (4) also can slide axially in described inner cylinder body (4), thus the inner chamber of described inner cylinder body (4) is divided into rod chamber and rodless cavity vertically successively, described inner cylinder body (4) is formed with rodless cavity hydraulic fluid port (W), described outer cylinder body (4) is formed with the first hydraulic fluid port (A) being communicated to described support cylinder body (2) inner chamber at first end, described first hydraulic fluid port (A) is connected with described rodless cavity hydraulic fluid port (W) oil circuit, described piston rod (5) is formed with the second hydraulic fluid port (B) in described one end, part in described rod chamber be formed with rod chamber hydraulic fluid port (Y) and comprise the inner chamber being communicated with described second hydraulic fluid port (B) and described rod chamber hydraulic fluid port (Y), be connected with described rod chamber hydraulic fluid port (Y) oil circuit to make described second hydraulic fluid port (B).
8. oil hydraulic cylinder according to claim 7, it is characterized in that, described inner cylinder body (4) is removably connected with described support cylinder body (2) in one end of the second end towards described outer cylinder body (1), and one end of the first end towards described outer cylinder body (1) is provided with guide sleeve (3).
9. oil hydraulic cylinder according to claim 7, it is characterized in that, described inner cylinder body (4) is formed with coupling shaft (14) highlightedly in one end of the second end towards described outer cylinder body (1), this coupling shaft (14) and described inner cylinder body (4) are coaxially arranged, attachment hole is formed with ordinatedly in the corresponding end of described support cylinder body (2), for the described coupling shaft of reception (14), and described inner cylinder body assembly also comprises for passing the corresponding end of described support cylinder body (2) and the connecting pin (9) of described coupling shaft (14), thus connect described inner cylinder body (4) and described support cylinder body (2), and the end of described connecting pin (9) is provided with seal plug (10).
10. an engineering machinery, is characterized in that, this project machinery comprises according to the oil hydraulic cylinder in claim 1-9 described in any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510834188.4A CN105257627B (en) | 2015-11-25 | 2015-11-25 | Hydraulic cylinder and engineering machinery |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510834188.4A CN105257627B (en) | 2015-11-25 | 2015-11-25 | Hydraulic cylinder and engineering machinery |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105257627A true CN105257627A (en) | 2016-01-20 |
| CN105257627B CN105257627B (en) | 2018-10-12 |
Family
ID=55097493
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510834188.4A Active CN105257627B (en) | 2015-11-25 | 2015-11-25 | Hydraulic cylinder and engineering machinery |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN105257627B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106044615A (en) * | 2016-07-27 | 2016-10-26 | 泸州合成液压件有限公司 | Mechanical lock double-acting jack |
| CN106481613A (en) * | 2016-08-25 | 2017-03-08 | 北京冶自欧博科技发展有限公司 | A kind of machine liquid dual fail-safe locked hydraulic cylinder |
| CN108343243A (en) * | 2018-02-11 | 2018-07-31 | 温州燧人智能科技有限公司 | A kind of Novel air cylinder and pulp shooting machine |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102004036915A1 (en) * | 2004-07-29 | 2006-03-23 | Ludwig Ehrhardt Gmbh | Clamping cylinder in compact design |
| US7216581B2 (en) * | 2004-01-16 | 2007-05-15 | The Boeing Company | Piston locking actuator |
| CN202418089U (en) * | 2012-01-06 | 2012-09-05 | 焦作市华科液压机械制造有限公司 | Hydraulic support cylinder |
| CN102817879A (en) * | 2012-08-29 | 2012-12-12 | 三一重工股份有限公司 | Hydro-pneumatic spring cylinder and engineering vehicle |
| CN103362893A (en) * | 2013-07-31 | 2013-10-23 | 徐州重型机械有限公司 | Engineering machinery and vertical oil cylinder of engineering machinery |
| CN104806599A (en) * | 2015-04-13 | 2015-07-29 | 宝鸡市工程液压件厂 | Boosting type mechanical locking type hydraulic cylinder |
| CN205371157U (en) * | 2015-11-25 | 2016-07-06 | 湖南特力液压有限公司 | Pneumatic cylinder and engineering machine tool |
-
2015
- 2015-11-25 CN CN201510834188.4A patent/CN105257627B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7216581B2 (en) * | 2004-01-16 | 2007-05-15 | The Boeing Company | Piston locking actuator |
| DE102004036915A1 (en) * | 2004-07-29 | 2006-03-23 | Ludwig Ehrhardt Gmbh | Clamping cylinder in compact design |
| CN202418089U (en) * | 2012-01-06 | 2012-09-05 | 焦作市华科液压机械制造有限公司 | Hydraulic support cylinder |
| CN102817879A (en) * | 2012-08-29 | 2012-12-12 | 三一重工股份有限公司 | Hydro-pneumatic spring cylinder and engineering vehicle |
| CN103362893A (en) * | 2013-07-31 | 2013-10-23 | 徐州重型机械有限公司 | Engineering machinery and vertical oil cylinder of engineering machinery |
| CN104806599A (en) * | 2015-04-13 | 2015-07-29 | 宝鸡市工程液压件厂 | Boosting type mechanical locking type hydraulic cylinder |
| CN205371157U (en) * | 2015-11-25 | 2016-07-06 | 湖南特力液压有限公司 | Pneumatic cylinder and engineering machine tool |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106044615A (en) * | 2016-07-27 | 2016-10-26 | 泸州合成液压件有限公司 | Mechanical lock double-acting jack |
| CN106481613A (en) * | 2016-08-25 | 2017-03-08 | 北京冶自欧博科技发展有限公司 | A kind of machine liquid dual fail-safe locked hydraulic cylinder |
| CN108343243A (en) * | 2018-02-11 | 2018-07-31 | 温州燧人智能科技有限公司 | A kind of Novel air cylinder and pulp shooting machine |
| CN108343243B (en) * | 2018-02-11 | 2020-06-16 | 温州燧人智能科技有限公司 | Cylinder and patching machine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN105257627B (en) | 2018-10-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105257627A (en) | Hydraulic cylinder and engineering machinery | |
| RU2672994C1 (en) | Device for unloading screw submersible pump and its bearing assembly, end seal assembly, safety valve and cam clutch | |
| CN105605357B (en) | Quick coupling comprising an improved ball bearing | |
| CN203730481U (en) | Quick connection safety joint | |
| CN203807011U (en) | Steel wire rope anti-twisting device and tower crane | |
| CN207033922U (en) | Quarry tipper tapered expansion pin | |
| CN207033888U (en) | The mechanical locking hydraulic jack of the tight device of mechanical lock of hydraulic cylinder and its composition | |
| CN205371157U (en) | Pneumatic cylinder and engineering machine tool | |
| CN204082753U (en) | Combined type oblique cone self-locking hydraulic oil cylinder | |
| CN203926223U (en) | Elastic card claw enclosed automatic locking mechanism for a kind of oil hydraulic cylinder | |
| CN104454782A (en) | Mechanically-locked support oil cylinder | |
| CN204082772U (en) | Combined type screw thread self-locking hydraulic jack | |
| CN104100595A (en) | Combined type threaded self-locking hydraulic oil cylinder | |
| CN104806599A (en) | Boosting type mechanical locking type hydraulic cylinder | |
| CN206682067U (en) | Spring tapered sleeve mechanical interlocking cylinder | |
| CN104088852B (en) | Elastic card claw enclosed automatic locking mechanism for hydraulic cylinder | |
| CN103230938B (en) | Milling train and automatic telescopic type Hooks coupling universal coupling thereof | |
| CN204372404U (en) | Hydraulic pressure low pressure big orifice swivel joint | |
| CN204082773U (en) | Combined type ratchet self-locking hydraulic oil cylinder | |
| CN204082752U (en) | Combined screw thread self-locking hydraulic oil cylinder | |
| CN204082751U (en) | Combined type oblique cone self-locking hydraulic oil cylinder | |
| CN107299923A (en) | The tight device of mechanical lock of hydraulic cylinder, mechanical locking hydraulic jack and its locking method | |
| CN203297200U (en) | Pressure relief plug | |
| CN220330507U (en) | Propeller keyless hydraulic installation structure | |
| CN103867541A (en) | Quickly connected safety joint |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |