CN109578377A - The hydraulic cylinder of the two-way dual mechanical locking in any position can be achieved - Google Patents
The hydraulic cylinder of the two-way dual mechanical locking in any position can be achieved Download PDFInfo
- Publication number
- CN109578377A CN109578377A CN201910093334.0A CN201910093334A CN109578377A CN 109578377 A CN109578377 A CN 109578377A CN 201910093334 A CN201910093334 A CN 201910093334A CN 109578377 A CN109578377 A CN 109578377A
- Authority
- CN
- China
- Prior art keywords
- cylinder barrel
- cylinder
- shell
- piston
- external bushing
- 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.)
- Pending
Links
- 230000009977 dual effect Effects 0.000 title claims abstract description 16
- 239000012530 fluid Substances 0.000 claims description 22
- 238000007789 sealing Methods 0.000 claims description 14
- 238000000926 separation method Methods 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 6
- 230000006835 compression Effects 0.000 abstract description 2
- 238000007906 compression Methods 0.000 abstract description 2
- 239000003921 oil Substances 0.000 description 37
- 229910000831 Steel Inorganic materials 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 230000007246 mechanism Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 239000010959 steel Substances 0.000 description 2
- 230000002730 additional effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000002828 fuel tank Substances 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/08—Characterised by the construction of the motor unit
- F15B15/14—Characterised by the construction of the motor unit of the straight-cylinder type
- F15B15/1423—Component parts; Constructional details
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/20—Other details, e.g. assembly with regulating devices
- F15B15/26—Locking mechanisms
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F15—FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
- F15B—SYSTEMS ACTING BY MEANS OF FLUIDS IN GENERAL; FLUID-PRESSURE ACTUATORS, e.g. SERVOMOTORS; DETAILS OF FLUID-PRESSURE SYSTEMS, NOT OTHERWISE PROVIDED FOR
- F15B15/00—Fluid-actuated devices for displacing a member from one position to another; Gearing associated therewith
- F15B15/20—Other details, e.g. assembly with regulating devices
- F15B15/26—Locking mechanisms
- F15B2015/268—Fluid supply for locking or release independent of actuator pressurisation
Landscapes
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Actuator (AREA)
Abstract
The present invention provides a kind of hydraulic cylinder of two-way dual mechanical locking in achievable any position, comprising: piston rod, cylinder barrel rear end cap, cylinder barrel drive end bearing bracket, shell, spring, external bushing, piston, neck bush, cylinder barrel；The present invention pushes external bushing by the spring in cylinder barrel, is acted on neck bush by the conical surface, shrinks neck bush and holds cylinder barrel tightly, cylinder barrel is locked simultaneously, and flexible deformation holding piston is generated under radial force effect, it realizes double locking, greatly increases the axial lock clamp force of oil cylinder, lock relatively reliable.The axial locking of Barrel of Hydraulic Cylinders is converted by the elastic force that compression deformation of the spring generates; i.e. hydraulic system is shut down, and hydraulic cylinder can lock, and hydraulic locking cylinder does not need additional high pressure oil sources; the present invention is able to bear bigger axial load while having the advantages that conventional cylinder locker.
Description
Technical field
The invention belongs to actuator mechanical interlocking technical field in hydraulic system, especially a kind of achievable any position is double
The hydraulic cylinder locked to dual mechanical.
Background technique
With the extensive use of hydraulic cylinder, hydraulic locking circuit can not solve hydraulic cylinder unavoidably existing internal leakage and
The piston of generation slides and stability problem, is only used for locking positioning occasion of less demanding.For locking positioning require compared with
High, load acts on the occasion of lower long-time positive lock, must just use mechanical lock hydraulic cylinder.Currently on the market more often
Hydraulic cylinder mechanical interlocking mode has: telescopic, brake chip, steel ball frictional, roller frictional formula, internal expansion type, snap ring-type etc..
But all there is respective drawback: it is telescopic be not easy to assemble with internal expansion type, piston rod maximum speed larger by environment temperature will receive
Limitation；Brake chip piston rod surface is easy to wear, and the service life is low；Steel ball is frictionally limited with roller frictional formula axial bearing capacity, processes
Required precision is higher, casing wall is easily damaged；Snap ring-type can not achieve any position locking.
Summary of the invention
It is two-way double that it is an object of the present invention to overcome the shortcomings of the prior art and provide a kind of achievable any positions
The hydraulic cylinder of hoisting machinery locking, with bigger axial load can be born compared with model；It is dual simultaneously that cylinder barrel inside and outside wall can be achieved
Bigger axial lock clamp force is realized in locking；Maintenance cost is low, is not affected by the external environment, and reliable operation is easy to implement automation
Control.The technical solution adopted by the present invention is that:
A kind of hydraulic cylinder of the two-way dual mechanical locking in achievable any position, comprising: before piston rod, cylinder barrel rear end cap, cylinder barrel
End cap, shell, spring, external bushing, piston, neck bush, cylinder barrel；
Piston rod passes through cylinder barrel rear end cap and enters cylinder barrel, and cylinder barrel rear end cap and cylinder barrel drive end bearing bracket are separately connected and close cylinder barrel
Rear end and front end；Between cylinder barrel rear end cap and piston rod clearance fit and be equipped with sealing ring,
Piston is connected to piston rod front end, is set in cylinder barrel；Between piston and inner wall of cylinder clearance fit and be equipped with sealing ring；
Cylinder barrel is together in piston rod merging shell；The tail end of piston rod connects and closes the tail end of shell；
In cylinder barrel, inner cavity of cylinder is divided by piston to be had positioned at the oil cylinder rodless cavity of pistons front sides and the oil cylinder on rear side of piston
Rod cavity；
Plunger end is equipped with rodless cavity hydraulic fluid port and rod chamber hydraulic fluid port, and rodless cavity hydraulic fluid port is connected by the oil duct being arranged in piston rod
Logical oil cylinder rodless cavity；Rod chamber hydraulic fluid port is connected to cylinder rod chamber by another oil duct being arranged in piston rod；
External bushing and neck bush are sheathed on outside cylinder barrel；Neck bush rear portion is cone cylinder type, passes through the conical surface between external bushing and neck bush
Cooperation；Neck bush connects and closes the front end of shell；Between neck bush and cylinder barrel outer wall clearance fit and be equipped with sealing ring；Outside
Bushing is in the gap between shell and cylinder barrel；Between external bushing rear portion and cylinder barrel outer wall clearance fit and be equipped with sealing ring,
Between external bushing rear portion and inner walls clearance fit and be equipped with sealing ring；
Between shell and cylinder barrel in gap, the front side at external bushing rear portion is unlock oil pocket, and rear side is oil back chamber；
It is equipped with step on the inner wall of the housing, spring is set on cylinder barrel, between shell and cylinder barrel, one end and the step phase of spring
It supports, the other end offsets with external bushing rear end；
The oil return opening of connection oil back chamber is equipped on shell；
The unlock hydraulic fluid port of connection unlock oil pocket is equipped on shell.
It further, can be in radial separation when external bushing and neck bush axially close up.
Further, cooperation position is corresponding with piston position between external bushing and neck bush.
Further, oil return opening is located in the shell section where spring.
Further, earrings part is made in the tail end of piston rod.
Further, earrings part is made in cylinder barrel drive end bearing bracket.
Further, spring uses Rectangular Section Spring.
Further, the one or both ends of spring increase gasket.
The present invention has the advantages that the present invention pushes external bushing by the spring in cylinder barrel, liner is acted on by the conical surface
It puts on, shrinks neck bush and hold cylinder barrel tightly, while locking cylinder barrel and generating flexible deformation holding piston under radial force effect, realize
Double locking greatly increases the axial lock clamp force of oil cylinder, locks relatively reliable.Turned by the elastic force that compression deformation of the spring generates
The axial locking of Barrel of Hydraulic Cylinders is turned to, i.e. hydraulic system is shut down, and hydraulic cylinder can lock, and hydraulic locking cylinder does not need additional height
Pressure oil source, the present invention are able to bear bigger axial load, will not influence while having the advantages that conventional cylinder locker
The properties of hydraulic cylinder, it is free of extraneous thermal effects；It locks relatively reliable, it is easy to accomplish.
Detailed description of the invention
Fig. 1 is structure composition schematic diagram of the invention.
Specific embodiment
Below with reference to specific drawings and examples, the invention will be further described.
The present invention proposes a kind of hydraulic cylinder of two-way dual mechanical locking in achievable any position, as shown in Figure 1, comprising:
Piston rod 1, cylinder barrel rear end cap 21, cylinder barrel drive end bearing bracket 22, shell 3, spring 4, external bushing 5, piston 6, neck bush 7, cylinder barrel 8；
Piston rod 1 passes through cylinder barrel rear end cap 21 and enters cylinder barrel 8, and cylinder barrel rear end cap 21 and cylinder barrel drive end bearing bracket 22 are separately connected and close
The firmly rear end and front end of cylinder barrel 8；Between cylinder barrel rear end cap 21 and piston rod 1 clearance fit and be equipped with sealing ring, prevent oil cylinder from having
Hydraulic oil seepage in rod cavity B, while cylinder barrel rear end cap 21 may make to move together with 8 opposing pistons bar 1 of cylinder barrel；
Piston 6 is connected to 1 front end of piston rod, is set in cylinder barrel 8；Between 8 inner wall of piston 6 and cylinder barrel clearance fit and be equipped with sealing
Circle；
Cylinder barrel 8 is placed in shell 3 together with piston rod 1；The tail end of piston rod 1 connects and closes the tail end of shell 3；Piston rod 1
Tail end can be made into earrings part, facilitate hydraulic cylinder to connect with external component；Earrings part can also be made in cylinder barrel drive end bearing bracket 22, convenient
It is connect with external component；
In cylinder barrel 8,8 inner cavity of cylinder barrel is divided into positioned at the oil cylinder rodless cavity A of 6 front side of piston and positioned at 6 rear side of piston by piston 6
Cylinder rod chamber B；Oil cylinder rodless cavity A and cylinder rod chamber B has been isolated in piston 6；Cylinder barrel 8 can be moved again with opposing pistons 6；
1 tail end of piston rod is equipped with rodless cavity hydraulic fluid port P1 and rod chamber hydraulic fluid port P2, rodless cavity hydraulic fluid port P1 pass through setting in piston rod
One oil duct is connected to oil cylinder rodless cavity A；Rod chamber hydraulic fluid port P2 is connected to cylinder rod chamber B by another oil duct being arranged in piston rod；
External bushing 5 and neck bush 7 are sheathed on outside cylinder barrel 8；7 rear portion of neck bush is cone cylinder type, is led between external bushing 5 and neck bush 7
Cone match is crossed, it can be in radial separation, so that neck bush 7 generates diameter to cylinder barrel 8 when external bushing 5 and neck bush 7 axially close up
To pressure；More preferably, cooperation position is corresponding with 6 position of piston between external bushing 5 and neck bush 7；Neck bush 7 is connected and is closed
The front end of shell 3；Between 8 outer wall of neck bush 7 and cylinder barrel clearance fit and be equipped with sealing ring；External bushing 5 is located at shell 3 and cylinder barrel
In gap between 8；Between 8 outer wall of 5 rear portion of external bushing and cylinder barrel clearance fit and be equipped with sealing ring, 5 rear portion of external bushing and shell
Between 3 inner wall of body clearance fit and be equipped with sealing ring；
Between shell 3 and cylinder barrel 8 in gap, the front side at 5 rear portion of external bushing is unlock oil pocket C, and rear side is oil back chamber D；
It is equipped with step 301 in 3 inner wall of shell, spring 4 is set on cylinder barrel 8, between shell 3 and cylinder barrel 8, the one of spring 4
End offsets with step 301, and the other end offsets with 5 rear end of external bushing；Rectangular Section Spring may be selected in spring 4；
The oil return inlet T of connection oil back chamber D is equipped on shell 3, oil return inlet T is preferably placed in the shell section at 4 place of spring；Oil return
Mouth T is for connecting fuel tank；
The unlock hydraulic fluid port P0 of connection unlock oil pocket C is equipped on shell 3；
When rodless cavity hydraulic fluid port P1 is passed through high pressure oil, pressure increases in oil cylinder rodless cavity A, and cylinder barrel 8 is protruding relative to piston 6
Shell 3；Conversely, when rod chamber hydraulic fluid port P2 is passed through high pressure oil, 8 regracting of cylinder barrel；
The working principle of locking are as follows: when unlock hydraulic fluid port P0 is passed through low pressure oil, oil cylinder rodless cavity A pressure is suitable with oil back chamber D pressure,
Substantially equal to tank pressure, external bushing 5 compress the neck bush 7 of cone barrel under the effect of 4 elastic force of spring, and neck bush 7 is in external bushing 5
Under the action of shrink the outer wall for holding cylinder barrel 8 tightly, while cylinder barrel 8 generates certain flexible deformation under 7 radial forces of neck bush, makes
8 inner wall of cylinder barrel and piston 6 are held tightly, are realized double locking, are made 8 axial lock of cylinder tube, be able to bear biggish axial load.
Cylinder barrel 8 can be realized in extended or retracted any position and be locked.
When unlock hydraulic fluid port P0 is passed through high pressure oil, unlock oil pocket C high pressure oil acts on compressed spring 4 to the left of external bushing 5, interior
Bushing 7 unclamps 8 outer wall of cylinder barrel and realizes unlock, while cylinder barrel 8 loses radially outward force effect and restPoses, and realizes in cylinder barrel 8
The unlock of wall and piston 6, cylinder barrel 8 can be with free movement at this time.
In the present invention, extensible member is sleeve 8, and piston rod, piston and shell are fixed mechanism (no motion of), compares phase
Bigger axial load is able to bear with model hydraulic cylinder (identical cylinder diameter, bar diameter)；
In the present invention, what locking member (i.e. neck bush 7 and piston 6) was held tightly is cylinder barrel 8, compared to model oil cylinder (identical cylinder diameter,
Bar diameter) locking active area it is bigger, increase the axial lock clamp force of hydraulic cylinder；
, it can be achieved that 8 inside and outside wall dual mechanical of cylinder barrel is locked in the present invention；The first, external bushing 5 compresses under the effect of 4 elastic force of spring
Cone barrel neck bush 7, neck bush 7 shrink the outer wall for holding cylinder barrel 8 tightly under the action of external bushing 5；The second, cylinder barrel 8 is in neck bush 7
Certain flexible deformation is generated under radial forces, holds 8 inner wall of cylinder barrel and piston 6 tightly；Greatly increase the axial locking of hydraulic cylinder
Power keeps hydraulic cylinder axial locking relatively reliable；
In the present invention, position and 8 inner wall of cylinder barrel that neck bush 7 acts on 8 outer wall of cylinder barrel act on the position consistency of piston 6,
It avoids being deformed due to cylinder barrel 8 by excessive radial force while realizing double locking；
In the present invention, the unlock and locking of hydraulic cylinder are realized by the on-off of control unlock hydraulic fluid port P0 and high pressure oil, are easy to real
Existing electrohydraulic integration control；
In the present invention, gasket further can be set in the one or both ends of spring 4, it can be according to actual use demand by adjusting bullet
The spacer thickness of spring adjusts coupling mechanism force size, reliable lock；
In the present invention, neck bush 7 and cylinder barrel 8, cylinder barrel 8 and piston 6 are clearance fit, when in the unlocked state, 8 axis of cylinder barrel
To can flexible motion, will not additional effect piston rod maximum/small speed of service；
In the present invention, rod chamber hydraulic fluid port P2, rodless cavity hydraulic fluid port P1 are arranged on piston rod 1, avoid the pipeline for following cylinder barrel to move
Connection, it is easy for installation.
It should be noted last that the above specific embodiment is only used to illustrate the technical scheme of the present invention and not to limit it,
Although being described the invention in detail referring to example, those skilled in the art should understand that, it can be to the present invention
Technical solution be modified or replaced equivalently, without departing from the spirit and scope of the technical solution of the present invention, should all cover
In the scope of the claims of the present invention.
Claims (8)
1. a kind of hydraulic cylinder of the two-way dual mechanical locking in achievable any position characterized by comprising piston rod (1), cylinder
Tube rear end lid (21), cylinder barrel drive end bearing bracket (22), shell (3), spring (4), external bushing (5), piston (6), neck bush (7), cylinder barrel
(8)；
Piston rod (1) passes through cylinder barrel rear end cap (21) and enters cylinder barrel (8), and cylinder barrel rear end cap (21) and cylinder barrel drive end bearing bracket (22) are respectively
Connect and close the rear end and front end of cylinder barrel (8)；Between cylinder barrel rear end cap (21) and piston rod (1) clearance fit and be equipped with it is close
Seal,
Piston (6) is connected to piston rod (1) front end, is set in cylinder barrel (8)；Clearance fit between piston (6) and cylinder barrel (8) inner wall
And it is equipped with sealing ring；
Cylinder barrel (8) is together in piston rod (1) merging shell (3)；The tail end of piston rod (1) connects and closes the tail of shell (3)
End；
In cylinder barrel (8), cylinder barrel (8) inner cavity is divided into the oil cylinder rodless cavity (A) on front side of piston (6) and is located at by piston (6)
Cylinder rod chamber (B) on rear side of piston (6)；
Piston rod (1) tail end is equipped with rodless cavity hydraulic fluid port (P1) and rod chamber hydraulic fluid port (P2), and rodless cavity hydraulic fluid port (P1) passes through piston rod
One oil duct of interior setting is connected to oil cylinder rodless cavity (A)；Rod chamber hydraulic fluid port (P2) is connected to by another oil duct being arranged in piston rod
Cylinder rod chamber (B)；
External bushing (5) and neck bush (7) are sheathed on cylinder barrel (8) outside；Neck bush (7) rear portion is cone cylinder type, external bushing (5) and liner
Pass through cone match between set (7)；Neck bush (7) connects and closes the front end of shell (3)；Neck bush (7) and cylinder barrel (8) are outside
Between wall clearance fit and be equipped with sealing ring；External bushing (5) is located in the gap between shell (3) and cylinder barrel (8)；External bushing
(5) between rear portion and cylinder barrel (8) outer wall clearance fit and be equipped with sealing ring, between external bushing (5) rear portion and shell (3) inner wall between
Gap is equipped with sealing ring with merging；
Between shell (3) and cylinder barrel (8) in gap, the front side at external bushing (5) rear portion is unlock oil pocket (C), and rear side is oil return
Chamber (D)；
Be equipped with step (301) in shell (3) inner wall, spring (4) is set on cylinder barrel (8), be located at shell (3) and cylinder barrel (8) it
Between, one end and the step (301) of spring (4) offset, and the other end offsets with external bushing (5) rear end；
The oil return opening (T) of connection oil back chamber (D) is equipped on shell (3)；
The unlock hydraulic fluid port (P0) of connection unlock oil pocket (C) is equipped on shell (3).
2. the hydraulic cylinder of the two-way dual mechanical locking in achievable any position as described in claim 1, which is characterized in that
External bushing (5) and neck bush (7) can be in radial separations when axially closing up.
3. the hydraulic cylinder of the two-way dual mechanical locking in achievable any position as described in claim 1, which is characterized in that
Cooperation position is corresponding with piston (6) position between external bushing (5) and neck bush (7).
4. the hydraulic cylinder of the two-way dual mechanical locking in achievable any position as described in claim 1, which is characterized in that
Oil return opening (T) is located in the shell section where spring (4).
5. the hydraulic cylinder of the two-way dual mechanical locking in achievable any position as described in claim 1, which is characterized in that
Earrings part is made in the tail end of piston rod (1).
6. the hydraulic cylinder of the two-way dual mechanical locking in achievable any position as described in claim 1, which is characterized in that
Earrings part is made in cylinder barrel drive end bearing bracket (22).
7. the hydraulic cylinder of the two-way dual mechanical locking in achievable any position as described in claim 1, which is characterized in that
Spring (4) uses Rectangular Section Spring.
8. the hydraulic cylinder of the two-way dual mechanical locking in achievable any position as described in claim 1, which is characterized in that
The one or both ends of spring (4) increase gasket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910093334.0A CN109578377A (en) | 2019-01-30 | 2019-01-30 | The hydraulic cylinder of the two-way dual mechanical locking in any position can be achieved |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910093334.0A CN109578377A (en) | 2019-01-30 | 2019-01-30 | The hydraulic cylinder of the two-way dual mechanical locking in any position can be achieved |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109578377A true CN109578377A (en) | 2019-04-05 |
Family
ID=65918461
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910093334.0A Pending CN109578377A (en) | 2019-01-30 | 2019-01-30 | The hydraulic cylinder of the two-way dual mechanical locking in any position can be achieved |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109578377A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114278644A (en) * | 2022-01-05 | 2022-04-05 | 三一汽车制造有限公司 | Self-locking oil cylinder and operation machine |
| CN114321094A (en) * | 2021-12-07 | 2022-04-12 | 中船重工重庆液压机电有限公司 | Built-in mechanical locking hydraulic oil cylinder at any position |
| CN114922879A (en) * | 2022-04-02 | 2022-08-19 | 宁波悦威液压科技有限公司 | Deep sea water pressure self-locking type oil cylinder |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3470793A (en) * | 1965-04-24 | 1969-10-07 | Siegfried Herbert Erwin Hanche | Locking device for hydraulic cylinder |
| DE3831459A1 (en) * | 1988-09-16 | 1990-03-29 | Bayerische Motoren Werke Ag | Locking device for double-acting fluid cylinders, in particular hydraulic cylinders |
| CN2748678Y (en) * | 2004-08-09 | 2005-12-28 | 中国航天科技集团公司第一研究院第十五研究所 | Spring type locking hydraulic cylinder |
| CN102628463A (en) * | 2012-04-03 | 2012-08-08 | 无锡亿利大机械有限公司 | Mechanical self-locking hydraulic cylinder |
| CN202811639U (en) * | 2012-09-14 | 2013-03-20 | 泸州市巨力液压有限公司 | Random displacement locking cylinder |
| CN104454782A (en) * | 2014-11-19 | 2015-03-25 | 泸州市巨力液压有限公司 | Mechanically-locked support oil cylinder |
| CN205977898U (en) * | 2016-07-29 | 2017-02-22 | 泸州合成液压件有限公司 | Lock oil cylinder |
| CN207583746U (en) * | 2017-10-31 | 2018-07-06 | 成都弗格森液压机电有限公司 | A kind of disk spring type locking device |
| CN207879754U (en) * | 2018-01-09 | 2018-09-18 | 嘉兴新维液压缸有限公司 | A kind of oil cylinder of double locking |
| CN209510778U (en) * | 2019-01-30 | 2019-10-18 | 华中科技大学无锡研究院 | The hydraulic cylinder of the two-way dual mechanical locking in any position can be achieved |
-
2019
- 2019-01-30 CN CN201910093334.0A patent/CN109578377A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3470793A (en) * | 1965-04-24 | 1969-10-07 | Siegfried Herbert Erwin Hanche | Locking device for hydraulic cylinder |
| DE3831459A1 (en) * | 1988-09-16 | 1990-03-29 | Bayerische Motoren Werke Ag | Locking device for double-acting fluid cylinders, in particular hydraulic cylinders |
| CN2748678Y (en) * | 2004-08-09 | 2005-12-28 | 中国航天科技集团公司第一研究院第十五研究所 | Spring type locking hydraulic cylinder |
| CN102628463A (en) * | 2012-04-03 | 2012-08-08 | 无锡亿利大机械有限公司 | Mechanical self-locking hydraulic cylinder |
| CN202811639U (en) * | 2012-09-14 | 2013-03-20 | 泸州市巨力液压有限公司 | Random displacement locking cylinder |
| CN104454782A (en) * | 2014-11-19 | 2015-03-25 | 泸州市巨力液压有限公司 | Mechanically-locked support oil cylinder |
| CN205977898U (en) * | 2016-07-29 | 2017-02-22 | 泸州合成液压件有限公司 | Lock oil cylinder |
| CN207583746U (en) * | 2017-10-31 | 2018-07-06 | 成都弗格森液压机电有限公司 | A kind of disk spring type locking device |
| CN207879754U (en) * | 2018-01-09 | 2018-09-18 | 嘉兴新维液压缸有限公司 | A kind of oil cylinder of double locking |
| CN209510778U (en) * | 2019-01-30 | 2019-10-18 | 华中科技大学无锡研究院 | The hydraulic cylinder of the two-way dual mechanical locking in any position can be achieved |
Non-Patent Citations (1)
| Title |
|---|
| 王品: "《一种套筒式两级油缸的锁紧装置的设计》", 液压气动与密封, no. 05, pages 50 - 51 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114321094A (en) * | 2021-12-07 | 2022-04-12 | 中船重工重庆液压机电有限公司 | Built-in mechanical locking hydraulic oil cylinder at any position |
| CN114278644A (en) * | 2022-01-05 | 2022-04-05 | 三一汽车制造有限公司 | Self-locking oil cylinder and operation machine |
| CN114278644B (en) * | 2022-01-05 | 2023-11-28 | 三一汽车制造有限公司 | Self-locking oil cylinder and working machine |
| CN114922879A (en) * | 2022-04-02 | 2022-08-19 | 宁波悦威液压科技有限公司 | Deep sea water pressure self-locking type oil cylinder |
| CN114922879B (en) * | 2022-04-02 | 2024-05-10 | 宁波悦威液压科技有限公司 | Deep sea water pressure self-locking type oil cylinder |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN209510778U (en) | The hydraulic cylinder of the two-way dual mechanical locking in any position can be achieved | |
| CN109578377A (en) | The hydraulic cylinder of the two-way dual mechanical locking in any position can be achieved | |
| WO1992018799A1 (en) | Pulsation damper for a pumped liquid system | |
| CN201671913U (en) | Actuator cylinder with built-in claw lock device | |
| CN108533563A (en) | A kind of external friction mechanical self-locking hydraulic cylinder based on ball-screw | |
| CN218440012U (en) | Telescopic rotary hydraulic cylinder | |
| CN110345127B (en) | Multi-stage hydraulic cylinder | |
| CN206845587U (en) | A kind of hydraulic cylinder retaining mechanism | |
| CN108087376B (en) | Hydraulic cylinder with anti-shear structure | |
| US3848414A (en) | Pressure converter | |
| CN213929000U (en) | High-pressure pull rod cylinder | |
| CN208669928U (en) | Hydro-pneumatic spring floating piston and hydro-pneumatic spring | |
| CN210290310U (en) | Rotary pressure servo valve | |
| CN209067580U (en) | A kind of hydraulic cylinder piston combination sealing arrangement | |
| CN110645290B (en) | Power takeoff with braking function | |
| CN221195573U (en) | Integrated hydraulic cylinder | |
| CN105221490A (en) | Hydraulic pressure installation | |
| CN109630501A (en) | A kind of hydraulic cylinder that two-way mechanical is self-locking | |
| CN217783914U (en) | Full-stroke locking hydraulic oil cylinder | |
| CN212250692U (en) | Self-locking hydraulic oil cylinder in cylinder | |
| CN211009481U (en) | Large-pressure remote liquid pressure control locking mechanism | |
| JP3780040B2 (en) | Fluid pressure cylinder | |
| CN218151779U (en) | Mechanical self-locking oil cylinder with displacement feedback | |
| CN204900399U (en) | Anti side force auto -lock wind -powered electricity generation pneumatic cylinder of high accuracy | |
| CN218882652U (en) | Plunger type cylinder with pressurizing function |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB02 | Change of applicant information | ||
| CB02 | Change of applicant information |
Address after: 214174 Yanxin Road 329, Huishan Economic Development Zone, Wuxi City, Jiangsu Province Applicant after: HUST-WUXI Research Institute Address before: 214174 No. 2 Qingyan Road, Huishan District, Wuxi City, Jiangsu Province Applicant before: HUST-WUXI Research Institute |
|
| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Liu Yinshui Inventor after: Hou Baobao Inventor after: Niu Zhuang Inventor before: Liu Yinshui Inventor before: Hou Baobao Inventor before: Zhu Zhuang |
|
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190405 |