CN108266427A - A kind of machinery total travel self-locking hydraulic cylinder - Google Patents
A kind of machinery total travel self-locking hydraulic cylinder Download PDFInfo
- Publication number
- CN108266427A CN108266427A CN201711178305.1A CN201711178305A CN108266427A CN 108266427 A CN108266427 A CN 108266427A CN 201711178305 A CN201711178305 A CN 201711178305A CN 108266427 A CN108266427 A CN 108266427A
- Authority
- CN
- China
- Prior art keywords
- sleeve
- locking
- locking sleeve
- lock
- disc spring
- 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.)
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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
-
- 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
-
- 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
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Fluid-Damping Devices (AREA)
Abstract
A kind of machinery total travel self-locking hydraulic cylinder, including cylinder barrel assembly, piston rod, guide sleeve, loaded in locking sleeve disc spring group, adjusting pad, lock sleeve, You Sai, the connecting flange of connection locking sleeve and cylinder barrel assembly, the end cap of disc spring group in fixed locking sleeve, loaded on the piston on piston rod.The requirement that lock sleeve realizes holding, unclamps piston rod in locking sleeve by swimming plug and disc spring group.Compared with prior art, the beneficial effects of the present invention are：Solve the existing piston displacement occurred by interior leakage of external bidirectional hydraulic lock hydraulic cylinder and instability problem, realize long-time of the piston under external load at an arbitrary position, high-precision locking positioning, with simple in structure, product easy processing, no individual hydraulic locking, solution lock loop, design of Hydraulic System is simplified, and possesses unqualified recoverable feature.
Description
Technical field
The present invention relates to mechanical manufacturing field, specifically a kind of machinery total travel self-locking hydraulic cylinder.
Background technology
At present, for the locking device of overturning oil cylinder by be important, most widely used at present is exactly self-locking in truck
Tight hydraulic cylinder, this hydraulic cylinder are that a kind of hydraulic pressure for driving and bearing big load performs original paper, usually require that it stops in movement
When can the bearing outer load of long-time stable and without any displacement.Realize the method for hydraulic cylinder locking mainly using external double at present
To hydraulic lock, bidirectional hydraulic lock is two hydraulic control one-way valves and uses together, is generally used in load-bearing hydraulic cylinder or motor
In oil circuit, for preventing hydraulic cylinder or motor from voluntarily gliding under weight effect, when needing action, it must lead to another way fuel feeding
Crossing internal control oil circuit opening check valve connects oil circuit, and hydraulic cylinder or motor could act.Due to the product structure in itself
Reason during hydraulic cylinder, due to the dead weight of load, often causes instantaneous loss of pressure in main working chamber, generates vacuum, and makes
Closed check valve then proceedes to fuel feeding so that work cavity pressure rising is then turned on check valve.Since either on or off continually occurs
Action, and can make to generate larger shock and vibration during being supported on whereabouts, therefore, bidirectional hydraulic lock is commonly used in movement
The not high locked loop of speed, and external bidirectional hydraulic lock can not solve what the inevitable existing interior leakage of hydraulic cylinder occurred
Piston displacement and stability problem.
Invention content
Overcome the shortcomings of above-mentioned external bidirectional hydraulic lock the purpose of the present invention is to provide a kind of, realized using mechanical structure
The mechanical total travel self-locking hydraulic cylinder of long-time of the piston under external load at an arbitrary position, high-precision locking positioning.
The technical scheme is that：Through connecting flange equipped with locking sleeve, locking sleeve is equipped with for one end of cylinder barrel assembly
Lock sleeve, You Sai, adjusting pad, disc spring group, end cap；Locking sleeve inner cavity one end is useful for the stepped hole of installation trip plug, lock sleeve
The tube inner chamber other end is useful for the stepped hole of installation disc spring group, between two stepped hole of locking sleeve inner cavity be one end be bigger diameter end,
One end is the conical surface inner cavity of miner diameter end, and lock sleeve is placed in conical surface inner cavity, piston rod is housed in lock sleeve；Lock sleeve shape with
Locking sleeve inner cavity is adapted, and lock sleeve miner diameter end is provided with two or more straight slots, forms the expansion knot of two or more spring valve compositions
Structure, the outer diameter that the internal diameter after the miner diameter end contraction of spring valve is less than after the miner diameter end contraction of piston rod outer diameter and spring valve are less than lock sleeve
Cylinder miner diameter end internal diameter, internal diameter is more than piston rod outer diameter after the miner diameter end expansion of spring valve；Lock sleeve bigger diameter end is provided with two or more and leads to
Slot, forms the expansion structure of two or more spring valve compositions, and the internal diameter after the bigger diameter end contraction of spring valve is less than piston rod outer diameter and spring
Outer diameter after the bigger diameter end of valve is shunk is less than locking sleeve bigger diameter end internal diameter, and internal diameter is more than piston rod after the bigger diameter end expansion of spring valve
Outer diameter, the outer diameter after the bigger diameter end expansion of spring valve are more than locking sleeve bigger diameter end internal diameter；The bigger diameter end of lock sleeve is equipped with adjusting pad,
Adjusting pad is placed in the stepped hole of installation disc spring group and is mutually pushed up with disc spring group；Locking sleeve one end is equipped with compression disc spring group and adjustment
The end cap of pad, the other end have connecting flange；Connecting flange, which is equipped with, to be pushed trip plug to pressure and then pushes what lock sleeve was unlocked
Hydraulic fluid port；It is filled on locking sleeve and gas vent is equipped at disc spring group.
Locking sleeve of the present invention is the conical surface with lock sleeve contact position, and disc spring group is loaded on locking sleeve left end, passes through dish
Spring group pressure pushes adjusting pad, lock sleeve to form coupling mechanism force and holds piston rod tightly, prevents piston rod from being moved because piston is pressurized.
Lock sleeve of the present invention is the conical surface with locking sleeve contact position.
For trip plug of the present invention loaded in locking sleeve right end stepped hole, the depth of stepped hole is more than the thickness of trip plug.
Disc spring group of the present invention is loaded on locking sleeve left chamber stepped hole, and the depth of stepped hole is more than the thickness of disc spring group.
Trip plug left end seam allowance outer diameter of the present invention is less than locking sleeve miner diameter end outer diameter.
Compared with prior art, the beneficial effects of the present invention are：It solves existing for external bidirectional hydraulic lock hydraulic cylinder
The piston displacement occurred by interior leakage and instability problem, realize long-time of the piston under external load at an arbitrary position,
High-precision locking positioning.With simple in structure, product easy processing, no individual hydraulic locking, solution lock loop simplify hydraulic pressure
System designs, and possesses unqualified recoverable feature.
Description of the drawings
Fig. 1 is the structure diagram of the present invention.
Fig. 2 is the assembling schematic diagram of end cap, disc spring group, adjusting pad, locking sleeve, lock sleeve, You Sai, connecting flange.
Fig. 3 is locking sleeve structure diagram.
Fig. 4 is locking sleeve structure schematic diagram.
It is A to structure diagram that Fig. 5, which is Fig. 4,.
Fig. 6 is trip plug structure schematic diagram.
In figure, 1, piston rod, 2, end cap, 3, disc spring group, 4, gas vent, 5, adjusting pad, 6, locking sleeve, 7, lock sleeve,
8th, You Sai, 9, connecting flange, 10, hydraulic fluid port, 11, guide sleeve, 12, piston, 13, cylinder barrel assembly.
Specific embodiment
In Fig. 1, the present invention include cylinder barrel assembly 13, piston rod 1, guide sleeve 11, loaded in locking sleeve 6 disc spring group 3,
Adjusting pad 5, lock sleeve 7, trip plug 8, the connecting flange 9 of connection locking sleeve 6 and cylinder barrel assembly 13 fix dish in locking sleeve 6
The end cap 2 of spring group 3, loaded on the piston 12 on piston rod 1.Trip plug 8 is positioned by connecting flange 9, connected loaded on locking sleeve right end
Flange 9 is equipped with hydraulic fluid port 10 and pushes trip plug 8 to pressure and then lock sleeve 7 is pushed to be unlocked（Before and after locking sleeve 6 is there are trip plug 8
The gap of mobile corresponding stroke）.Piston rod 1 is housed in lock sleeve 7.Lock sleeve 7 be mounted on locking sleeve 6 in by swim plug 8 and
Disc spring group 3 come realize holding, unclamp piston rod requirement, in the case where hydraulic fluid port 10 is without system pressure supply, lock sleeve 7 is by disc spring group 3
Applying pressure makes 7 outer surface of lock sleeve（The conical surface）B15 is moved right compression by the conical surface inner cavity A14 contacted with locking sleeve 6
Lock sleeve 7 plays the role of holding piston rod tightly；In hydraulic fluid port 10 by system pressure supply, the pressure that hydraulic fluid port 10 is conveyed is more than disc spring group
3 pressure pushes trip plug 8 to overcome the pressure of disc spring group 3 that lock sleeve 7 is pushed to be moved to the left releasing lock sleeve 7 and is applied to piston rod 1
Enclasping force, make piston rod 1 and piston 12 that can freely be moved back and forth in the case where there is pressure condition.
In Fig. 2,8, adjusting pad 5, disc spring group 3, end cap 2 are filled in equipped with lock sleeve 7, trip on locking sleeve 6, lock sleeve 7 is built-in
There is piston rod 1, the connecting flange 9 being connect with 6 right end of locking sleeve is equipped with hydraulic fluid port 10 and pushes trip plug 8 to pressure and then push locking
Set 7 is unlocked, and is filled on locking sleeve 6 and gas vent 4 is equipped at disc spring group 3, and 6 left side of locking sleeve compresses dish equipped with end cap 2
Equipped with adjusting pad 5 on locking sleeve 6,5 pressure of disc spring is adjusted by adjusting 5 thickness of adjusting pad for spring group 3 and adjusting pad 5.
Adjusting pad 5 can require adjustment thickness according to coupling mechanism force, to change 3 compression stroke of disc spring group, adjust coupling mechanism force.
In Fig. 3, locking sleeve 6 is the conical surface with lock sleeve contact position, and disc spring group is loaded on 6 left end of locking sleeve, passes through disc spring
Group pressure pushes adjusting pad, lock sleeve to form coupling mechanism force and holds piston rod tightly, prevents piston rod from being moved because piston is pressurized.Locking sleeve
6 inner cavities one end are useful for the stepped hole of installation trip plug, and the 6 inner cavity other end of locking sleeve is useful for the stepped hole of installation disc spring group,
Inner cavity is the conical surface inner cavity 14 that one end is bigger diameter end, one end is miner diameter end between 6 liang of stepped holes of locking sleeve, on locking sleeve 6
It fills and gas vent 4 is equipped at disc spring group 3.
In Fig. 4, Fig. 5,7 endoporus of lock sleeve is collapsible clasping structure.7 shape of lock sleeve is mutually fitted with locking sleeve inner cavity
Match, 7 outer surface of lock sleeve is the conical surface 15.7 miner diameter end of lock sleeve is provided with two or more straight slots, forms what two or more spring valves formed
Expansion structure, the outer diameter that the internal diameter after the miner diameter end contraction of spring valve is less than after the miner diameter end contraction of piston rod outer diameter and spring valve are less than
6 miner diameter end internal diameter of locking sleeve, internal diameter is more than piston rod outer diameter after the miner diameter end expansion of spring valve.
In Fig. 6, trip plug 8 is positioned, connecting flange is pushed away equipped with hydraulic fluid port 10 to pressure loaded on locking sleeve right end by connecting flange
Dynamic trip plug 8 and then promotion lock sleeve 7 are unlocked（There are the gaps that trip plug 8 is moved forward and backward corresponding stroke for locking sleeve 6）.It is described
Trip 8 left end seam allowance outer diameters of plug are less than 6 right end end face of locking sleeve（6 miner diameter end of locking sleeve）Outer diameter.
Claims (6)
1. a kind of machinery total travel self-locking hydraulic cylinder, it is characterised in that：Cylinder barrel assembly（13）One end through connecting flange（9）Dress
There is locking sleeve（6）, locking sleeve（6）Equipped with lock sleeve（7）, You Sai（8）, adjusting pad（5）, disc spring group（3）, end cap（2）；Lock
Fixed cylinder（6）Inner cavity one end is useful for installation trip plug（8）Stepped hole, locking sleeve（6）The inner cavity other end is useful for installation dish
Spring group（3）Stepped hole, locking sleeve（6）Inner cavity is the conical surface that one end is bigger diameter end, one end is miner diameter end between two stepped holes
Inner cavity, the conical surface are placed with lock sleeve in inner cavity（7）, lock sleeve（7）It is interior that piston rod is housed；Lock sleeve（7）Shape and locking sleeve
（6）Inner cavity is adapted, lock sleeve（7）Miner diameter end is provided with two or more straight slots, forms the expansion structure of two or more spring valve compositions,
Internal diameter after the miner diameter end of spring valve is shunk is less than the outer diameter after the miner diameter end contraction of piston rod outer diameter and spring valve less than locking sleeve
（6）Miner diameter end internal diameter, internal diameter is more than piston rod outer diameter after the miner diameter end expansion of spring valve；Lock sleeve（7）Bigger diameter end be provided with two with
Upper straight slot, forms the expansion structure of two or more spring valve compositions, and the internal diameter after the bigger diameter end contraction of spring valve is less than piston rod outer diameter
And the outer diameter after the bigger diameter end contraction of spring valve is less than locking sleeve（6）Bigger diameter end internal diameter, internal diameter is big after the bigger diameter end expansion of spring valve
Outer diameter after piston rod outer diameter, the bigger diameter end expansion of spring valve is more than locking sleeve（6）Bigger diameter end internal diameter；Lock sleeve（7）It is big
Diameter end is equipped with adjusting pad（5）, adjusting pad（5）It is placed in installation disc spring group（3）Stepped hole in and mutually push up with disc spring group (3)；
Locking sleeve（6）One end is equipped with the end cap for compressing disc spring group (3) and adjusting pad (5)（2）, the other end has connecting flange（9）；
Connecting flange (9), which is equipped with, to be pushed trip plug (8) to pressure and then pushes lock sleeve（7）The hydraulic fluid port being unlocked（10）；Locking sleeve
（6）Upper dress disc spring group（3）Place is equipped with gas vent（4）.
2. machinery total travel self-locking hydraulic cylinder according to claim 1, it is characterised in that：The locking sleeve（6）With
Lock sleeve（7）Contact position is the conical surface, and disc spring group (3) is loaded on locking sleeve（6）Left end is pushed by disc spring group (3) pressure and adjusted
(5), lock sleeve (7) formation coupling mechanism force holding piston rod are padded, prevents piston rod (1) from being moved because piston (12) is pressurized.
3. machinery total travel self-locking hydraulic cylinder according to claim 2, it is characterised in that：The lock sleeve (7) and lock
Fixed cylinder（6）Contact position is the conical surface.
4. machinery total travel self-locking hydraulic cylinder according to claim 1, it is characterised in that：The trip plug（8）Loaded on lock
Fixed cylinder（6）In right end stepped hole, the depth of stepped hole is more than trip and fills in（8）Thickness.
5. machinery total travel self-locking hydraulic cylinder according to claim 1, it is characterised in that：The disc spring group（3）It is loaded on
Locking sleeve（6）Left chamber stepped hole, the depth of stepped hole are more than disc spring group（3）Thickness.
6. machinery total travel self-locking hydraulic cylinder according to claim 1, it is characterised in that：The trip plug（8）Left end stops
Mouth outer diameter is less than locking sleeve（6）Miner diameter end outer diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711178305.1A CN108266427B (en) | 2017-11-23 | 2017-11-23 | Mechanical full-stroke self-locking hydraulic cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711178305.1A CN108266427B (en) | 2017-11-23 | 2017-11-23 | Mechanical full-stroke self-locking hydraulic cylinder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108266427A true CN108266427A (en) | 2018-07-10 |
| CN108266427B CN108266427B (en) | 2023-09-08 |
Family
ID=62771729
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711178305.1A Active CN108266427B (en) | 2017-11-23 | 2017-11-23 | Mechanical full-stroke self-locking hydraulic cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108266427B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109869370A (en) * | 2019-03-29 | 2019-06-11 | 苏州久越金属科技有限公司 | A kind of adjustable floating cylinder |
| CN112545511A (en) * | 2020-12-09 | 2021-03-26 | 云南省精神病医院 | Collection system for human blood concentration control of being convenient for |
| CN113217501A (en) * | 2021-04-30 | 2021-08-06 | 韶关液压件厂有限公司 | Hydraulic cylinder structure with clamp inside and using method thereof |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE781455A (en) * | 1971-04-02 | 1972-07-17 | Dudiens Industriegerate Handel | DOUBLE ACTING PNEUMATIC OR HYDRAULIC CYLINDER WITH MECHANICAL LOCKING |
| AU5827373A (en) * | 1973-07-18 | 1975-01-23 | Coors Container Co. | Air spring cylinder assemblies |
| JPH0728243U (en) * | 1993-09-14 | 1995-05-23 | 曙ブレーキ工業株式会社 | Brake actuator |
| CN201568396U (en) * | 2009-12-18 | 2010-09-01 | 中国电子科技集团公司第十四研究所 | Differentially controlled limit-position self-locking oil cylinder |
| CN202811639U (en) * | 2012-09-14 | 2013-03-20 | 泸州市巨力液压有限公司 | Random displacement locking cylinder |
| CN103089742A (en) * | 2011-11-01 | 2013-05-08 | 北京航天发射技术研究所 | Hydrostatic system, hydrostatic steering system and hydrostatic pressure-limiting oil replenishing device thereof |
| CN204403032U (en) * | 2014-12-23 | 2015-06-17 | 旭阳传动***工程（成都）有限公司 | Adjustable lock locking oil cylinder |
-
2017
- 2017-11-23 CN CN201711178305.1A patent/CN108266427B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| BE781455A (en) * | 1971-04-02 | 1972-07-17 | Dudiens Industriegerate Handel | DOUBLE ACTING PNEUMATIC OR HYDRAULIC CYLINDER WITH MECHANICAL LOCKING |
| AU5827373A (en) * | 1973-07-18 | 1975-01-23 | Coors Container Co. | Air spring cylinder assemblies |
| JPH0728243U (en) * | 1993-09-14 | 1995-05-23 | 曙ブレーキ工業株式会社 | Brake actuator |
| CN201568396U (en) * | 2009-12-18 | 2010-09-01 | 中国电子科技集团公司第十四研究所 | Differentially controlled limit-position self-locking oil cylinder |
| CN103089742A (en) * | 2011-11-01 | 2013-05-08 | 北京航天发射技术研究所 | Hydrostatic system, hydrostatic steering system and hydrostatic pressure-limiting oil replenishing device thereof |
| CN202811639U (en) * | 2012-09-14 | 2013-03-20 | 泸州市巨力液压有限公司 | Random displacement locking cylinder |
| CN204403032U (en) * | 2014-12-23 | 2015-06-17 | 旭阳传动***工程（成都）有限公司 | Adjustable lock locking oil cylinder |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109869370A (en) * | 2019-03-29 | 2019-06-11 | 苏州久越金属科技有限公司 | A kind of adjustable floating cylinder |
| CN112545511A (en) * | 2020-12-09 | 2021-03-26 | 云南省精神病医院 | Collection system for human blood concentration control of being convenient for |
| CN113217501A (en) * | 2021-04-30 | 2021-08-06 | 韶关液压件厂有限公司 | Hydraulic cylinder structure with clamp inside and using method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN108266427B (en) | 2023-09-08 |
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