CN106499696A - Enclosed self-locking oil cylinder - Google Patents
Enclosed self-locking oil cylinder Download PDFInfo
- Publication number
- CN106499696A CN106499696A CN201611235365.8A CN201611235365A CN106499696A CN 106499696 A CN106499696 A CN 106499696A CN 201611235365 A CN201611235365 A CN 201611235365A CN 106499696 A CN106499696 A CN 106499696A
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- China
- Prior art keywords
- cylinder
- piston
- inner cylinder
- rod
- liner
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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
- 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)
- Actuator (AREA)
Abstract
The present invention relates to enclosed self-locking oil cylinder, including cylinder body, inner cylinder liner, piston is built in inner cylinder liner, the internal diameter of inner cylinder liner is matched with the external diameter of piston, inner cylinder liner outer wall is provided with annular fixing device, and the circumferential sealing ring that is nested with is coordinated with inboard wall of cylinder block gap, inner cylinder liner front end is connected with front end housing, distance is left between rear end and back cylinder cover, and it is additionally provided with lockup piston therebetween, lockup piston is cylinder, diameter is matched with cylinder diameter, lockup piston thickness is less than inner cylinder liner rear end and the distance of back cylinder cover, propulsion plant is additionally provided between lockup piston and back cylinder cover.The present invention can be locked by lockup piston when piston rod stretches out random length outside cylinder body, and the oil cylinder after locking need not consider the pressure of rod chamber and rodless cavity, it is only necessary to keep the pressure of propulsion plant.
Description
Technical field
The present invention relates to technical field of hydraulic oil cylinder, more particularly to a kind of enclosed self-locking oil cylinder.
Background technology
Hydraulic jack is a kind of energy dress rotary device that fluid pressure is converted into reciprocating linear mechanical movement, with application
The expansion in field, user are increasingly extensive to the application scenarios of hydraulic jack, wherein just include oil cylinder latch functions, so-called locking oil
Cylinder is exactly, under hydraulic action, cylinder piston rod is pushed to specified point and holding position in the case of load-carrying, traditional oil cylinder
Rod chamber and rodless cavity being applied certain pressure generally and precalculated position being kept by oil cylinder piston and piston rod, this kind of mode is maximum
Problem in pressurize position fixing process rod chamber and rodless cavity there is pressure easily to produce string chamber phenomenon, and two chambers simultaneously
Common pressurization, loads hydraulic system and also increases, and the reliability of hydraulic system and the degree of automatization is required also higher.
As technology development hydraulic jack field occurs in that self-locking oil cylinder, self-locking oil cylinder are divided into two kinds at present again：One kind is by living
Arranging on stopper rod notch coordinates removable pin to be locked, and another kind is for example middle promulgated by the State Council of frame for movement for setting up load in oil cylinder
Self-locking oil cylinder described by bright patent 201110319429.3, needs the complex mechanical structure for arranging locking in oil cylinder cavity complete
Into locking action, although the first simple structure in above two locking mode, cylinder piston rod lock position is fixed
Can not be arbitrarily linear selection, although it is extremely complex to set lockable mechanism in the oil cylinder of locking position for second, and locking
It is also the fixed selection that cannot realize linear arbitrfary point that position is relative.
Content of the invention
For solving the above problems, the present invention is by providing a kind of simple structure, low to hydraulic oil pipe system requirement, and can
Realize the self-locking oil cylinder of unrestricted choice locked point.
The technical scheme is that：Enclosed self-locking oil cylinder, including cylinder body, piston rod, piston, front end housing, back cylinder cover, has
Rod cavity, rodless cavity, rod chamber hydraulic fluid port, rodless cavity hydraulic fluid port and sealing ring, wherein cylinder body front end are provided with front thick stick lid, and tail end is provided with rear cylinder
Lid, inside are provided with piston, and front end housing center is provided with circular open, and the inwall of circular open is provided with sealing ring, piston rod
One end is stretched out on the outside of cylinder body through circular open and sealing ring, and the other end is connected with cylinder interior piston, and piston is cylinder, living
Sealing ring is cased with week beyond the Great Wall, and rod chamber hydraulic fluid port is respectively arranged on cylinder body front portion and rear portion with rodless cavity hydraulic fluid port, runs through outer wall of cylinder block,
And be connected with rod chamber and rodless cavity respectively, it is additionally provided with inner cylinder liner in the cylinder body, inner cylinder liner is tubular structure, and piston is built in
In inner cylinder liner, the internal diameter of inner cylinder liner is matched with the external diameter of piston and the sealing ring for being placed on piston outer periphery, and inner cylinder liner outer wall is provided with
Annular fixing device, and the circumferential sealing ring that is nested with, with the cooperation of inboard wall of cylinder block gap, inner cylinder liner front end is connected with front end housing, after
Distance is left between end and back cylinder cover, and is additionally provided with lockup piston therebetween, lockup piston is cylinder, diameter and cylinder body
Internal diameter matches, and lockup piston thickness is less than the distance of inner cylinder liner rear end and back cylinder cover, between the lockup piston and back cylinder cover
It is additionally provided with propulsion plant.
Further preferably, the circle centre position of lockup piston one end adjacent with back cylinder cover is additionally provided with truncated cone-shaped positioning convex,
Back cylinder cover is provided with cylindrical locating slot positioned at cylinder interior side, and the positioning convex insertion locating slot is interior and gap is matched somebody with somebody therewith
Close.
Further preferably, the propulsion plant includes locking hydraulic fluid port, and one end of the locking hydraulic fluid port is located on back cylinder cover, separately
One end is located at cylinder interior and perpendicular to lockup piston.
Further preferably, the propulsion plant includes being connected to the screw rod of positioning convex rear end and is arranged on back cylinder cover inwall
On can mate the nut for using, screw rod is stretched out on the outside of cylinder body through locating slot, nut.
Further preferably, the screw rod is vertical with back cylinder cover, and the screw rod, nut are the same center of circle.
Further preferably, sealing ring is additionally provided with locating slot inwall.
The invention has the advantages that：Can be when piston rod stretches out random length outside cylinder body by lockup piston
Locked, and the oil cylinder after locking need not be considered the pressure of rod chamber and rodless cavity, it is only necessary to kept the pressure of propulsion plant
Power.
Description of the drawings
Fig. 1 is the structural representation of embodiment 1 in the present invention.
Fig. 2 is the structural representation of embodiment 2 in the present invention.
Wherein：Cylinder body 1, piston rod 2, piston 3, front end housing 4, back cylinder cover 5, rod chamber hydraulic fluid port 6, rodless cavity hydraulic fluid port 7, inner casing
Set 8, locking hydraulic fluid port 9, cushion pad 10, lockup piston 11, positioning convex 12, rod chamber 13, rodless cavity 14, sealing ring 15, screw rod
16th, nut 17, lock chamber 18, locating slot 19, fixing device 20.
Specific embodiment
The invention will be further described below in conjunction with the accompanying drawings.
Embodiment 1：As shown in figure 1, enclosed self-locking oil cylinder, including cylinder body 1, piston rod 2, piston 3, front end housing 4, back cylinder cover 5, have
Rod cavity 13, rodless cavity 14, rod chamber hydraulic fluid port 6, rodless cavity hydraulic fluid port 7 and sealing ring 15, the wherein circular tubulose of 1 inner chamber of cylinder body, front
End is provided with front thick stick lid 4, and tail end is provided with back cylinder cover 5, and inside is provided with piston 3.4 center of front end housing is provided with circular open, circular
The inwall of opening is provided with sealing ring 15, and piston rod 2 is stretched out on the outside of cylinder body 1 through one end of circular open and sealing ring 15, another
End is connected with 1 internal piston 3 of cylinder body, and piston 3 is cylinder, is cased with sealing ring 15 in 3 periphery of piston.Rod chamber hydraulic fluid port 6 and nothing
Rod cavity hydraulic fluid port 7 is respectively arranged on 1 front portion of cylinder body and rear portion, runs through 1 outer wall of cylinder body, and connects with rod chamber 13 and rodless cavity 14 respectively
Connect.Be additionally provided with inner cylinder liner 8 in cylinder body 1, inner cylinder liner 8 is tubular structure, piston 3 is built in inner cylinder liner 8, inner cylinder liner 8 interior
Footpath is matched with the external diameter of piston 3 and the sealing ring 15 for being placed on 3 periphery of piston.8 outer wall of inner cylinder liner is provided with annular fixing device
20, and sealing ring 15 and the cooperation of 1 inwall gap of cylinder body is circumferentially nested with, or 1 annular of cylinder body is fixed dress when cylinder body 1 is manufactured
Put 20 and inner cylinder liner 8 molding is formed integrally by machining center, 8 front end of inner cylinder liner is connected with front end housing 4, rear end and back cylinder cover 5
Fixed range being left, lockup piston 11 being additionally provided between the inner cylinder liner 8 and back cylinder cover 5 in cylinder body 1, lockup piston 11 is cylinder
Shape, the diameter of lockup piston 11 are matched with 1 internal diameter of cylinder body, 11 thickness of lockup piston less than 8 rear end of inner cylinder liner and back cylinder cover 5 it
Between distance.Propulsion plant is additionally provided between the lockup piston 11 and back cylinder cover 5.For making lockup piston 11 keep fortune in working
Dynamic direction is stablized, and lockup piston 11 is additionally provided with truncated cone-shaped positioning convex 12, back cylinder cover with the circle centre position of 5 adjacent one end of back cylinder cover
5 are provided with cylindrical locating slot 19 on the inside of cylinder body 1, and the insertion of the positioning convex 12 locating slot 19 is interior and gap coordinates therewith.
The propulsion plant is included on back cylinder cover 5 and arranges locking hydraulic fluid port 9, and locking hydraulic fluid port 9 is L-shaped pipeline, and top is located at outside back cylinder cover 5
It is connected with hydraulic system, bottom extends into back cylinder cover 5, and stretches in cylinder body 1, and outlet at bottom is vertical with lockup piston 11.
During use, hydraulic oil is injected into rod chamber 13 or rodless cavity 14 by rod chamber hydraulic fluid port 6 or rodless cavity hydraulic fluid port 7 and is pushed away
Piston 3 is moved, and after making piston rod 2 reach specified location, then injects hydraulic oil to locking hydraulic fluid port, and hydraulic oil enters lock chamber
18, promote lockup piston 11 to move to inner cylinder liner 8 and completely attach to inner cylinder liner 8, by inner cylinder liner 8 with rodless cavity 14 completely every
From because the characteristics of hydraulic oil has incompressible, making piston 3 and piston rod 2 keep fixed position so as to reaching locking
Purpose.
Embodiment 2：Because embodiment 2 is different from the structure for differing only in propulsion plant of embodiment 1, other parts are all
Identical, thus like part is omitted and is repeated no more, and only describes the propulsion plant in embodiment 2.
As shown in Fig. 2 propulsion plant includes the screw rod 16 for being connected to 12 rear portion of positioning convex and on back cylinder cover 5
Nut 17, screw rod 16 are connected for axle with positioning convex 12, vertical with back cylinder cover 5, and nut 17 is located at the rear cylinder of 19 rear end of locating slot
In 5 body interior of lid and axially identical with 19 center of circle of locating slot, screw rod 16 is also cross stretching out cylinder after locating slot 19 and nut 17
Outside body 1, on 19 inwall of locating slot, it is additionally provided with sealing ring 15.
During use, hydraulic oil is injected into rod chamber 13 or rodless cavity 14 by rod chamber hydraulic fluid port 6 or rodless cavity hydraulic fluid port 7 and is pushed away
Piston 3 is moved, and after making piston rod 2 reach specified location, screw rod 16 is rotated under the cooperation of nut 17, and screw rod 16 promotes locking
Piston 11 is moved to inner cylinder liner 8 and is completely attached to inner cylinder liner 8, will be completely isolated with rodless cavity 14 for inner cylinder liner 8, because of hydraulic oil
Incompressible the characteristics of, piston 3 and piston rod 2 is made to keep fixed position to reach the purpose of locking.
In above two embodiment, inner cylinder liner tail end periphery is additionally provided with cushion pad 10, weakens lockup piston 11 and inner casing
Set 8 with reference to when produce rush cylinder phenomenon.
Claims (6)
1. enclosed self-locking oil cylinder, oily including cylinder body, piston rod, piston, front end housing, back cylinder cover, rod chamber, rodless cavity, rod chamber
Mouth, rodless cavity hydraulic fluid port and sealing ring, wherein cylinder body front end are provided with front thick stick lid, and tail end is provided with back cylinder cover, and inside is provided with piston, front cylinder
Lid center is provided with circular open, and the inwall of circular open is provided with sealing ring, and one end of piston rod is through circular open and close
Seal is stretched out on the outside of cylinder body, and the other end is connected with cylinder interior piston, and piston is that cylinder, piston outer periphery are cased with sealing ring, have
Rod cavity hydraulic fluid port and rodless cavity hydraulic fluid port are respectively arranged on that cylinder body is anterior and rear portion, run through outer wall of cylinder block, and respectively with rod chamber and nothing
Rod cavity connects, it is characterised in that：It is additionally provided with inner cylinder liner in the cylinder body, inner cylinder liner is tubular structure, piston is built in inner cylinder liner
Interior, the internal diameter of inner cylinder liner is matched with the external diameter of piston and the sealing ring for being placed on piston outer periphery, and inner cylinder liner outer wall is provided with annular
Fixing device, and the circumferential sealing ring that is nested with coordinated with inboard wall of cylinder block gap, inner cylinder liner front end is connected with front end housing, rear end with rear
Distance being left between cylinder cap, and being additionally provided with lockup piston therebetween, lockup piston is cylinder, diameter and cylinder diameter phase
Coupling, lockup piston thickness are additionally provided between the lockup piston and back cylinder cover less than inner cylinder liner rear end and the distance of back cylinder cover
Propulsion plant.
2. enclosed self-locking oil cylinder according to claim 1, it is characterised in that lockup piston one end adjacent with back cylinder cover
Circle centre position be additionally provided with truncated cone-shaped positioning convex, back cylinder cover is provided with cylindrical locating slot, the positioning positioned at cylinder interior side
Raised insertion locating slot is interior and gap coordinates therewith.
3. enclosed self-locking oil cylinder according to claim 1 or claim 2, it is characterised in that the propulsion plant includes locking hydraulic fluid port, institute
The one end for stating locking hydraulic fluid port is located on back cylinder cover, and the other end is located at cylinder interior and perpendicular to lockup piston.
4. enclosed self-locking oil cylinder according to claim 2, it is characterised in that the propulsion plant includes being connected to positioning convex
The screw rod of rear end can mate the nut for using with being arranged on back cylinder cover inwall, and screw rod is stretched out outside cylinder body through locating slot, nut
Side.
5. enclosed self-locking oil cylinder according to claim 4, it is characterised in that the screw rod is vertical with back cylinder cover, the screw rod,
Nut is the same center of circle.
6. enclosed self-locking oil cylinder according to claim 5, it is characterised in that be additionally provided with sealing ring on locating slot inwall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611235365.8A CN106499696B (en) | 2016-12-28 | 2016-12-28 | Enclosed self-locking oil cylinder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611235365.8A CN106499696B (en) | 2016-12-28 | 2016-12-28 | Enclosed self-locking oil cylinder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106499696A true CN106499696A (en) | 2017-03-15 |
| CN106499696B CN106499696B (en) | 2018-04-10 |
Family
ID=58334569
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201611235365.8A Active CN106499696B (en) | 2016-12-28 | 2016-12-28 | Enclosed self-locking oil cylinder |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106499696B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109538451A (en) * | 2019-01-14 | 2019-03-29 | 沈阳远大压缩机有限公司 | The hydraulic guiding of super-pressure diaphragm type compressor seals film head |
| CN110206782A (en) * | 2019-06-12 | 2019-09-06 | 中国石油大学(华东) | The underwater telescopic fluid cylinder driving locking docking facilities of axle sleeve |
| CN110294065A (en) * | 2019-04-30 | 2019-10-01 | 武汉船用机械有限责任公司 | Load test tooling |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS623521Y2 (en) * | 1980-03-28 | 1987-01-27 | ||
| US20040007127A1 (en) * | 2002-07-15 | 2004-01-15 | Colby Douglas D. | Cylinder lock |
| CN203641171U (en) * | 2013-12-06 | 2014-06-11 | 韶关液压件厂有限公司 | Hovel hydraulic cylinder locking device |
| CN204572622U (en) * | 2015-03-06 | 2015-08-19 | 徐州奥博机械科技有限公司 | A kind of adjustable type mechanical type self locking hydraulic cylinder |
| CN206320111U (en) * | 2016-12-28 | 2017-07-11 | 哈尔滨通用液压机械制造有限公司 | Enclosed self-locking oil cylinder |
-
2016
- 2016-12-28 CN CN201611235365.8A patent/CN106499696B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS623521Y2 (en) * | 1980-03-28 | 1987-01-27 | ||
| US20040007127A1 (en) * | 2002-07-15 | 2004-01-15 | Colby Douglas D. | Cylinder lock |
| CN203641171U (en) * | 2013-12-06 | 2014-06-11 | 韶关液压件厂有限公司 | Hovel hydraulic cylinder locking device |
| CN204572622U (en) * | 2015-03-06 | 2015-08-19 | 徐州奥博机械科技有限公司 | A kind of adjustable type mechanical type self locking hydraulic cylinder |
| CN206320111U (en) * | 2016-12-28 | 2017-07-11 | 哈尔滨通用液压机械制造有限公司 | Enclosed self-locking oil cylinder |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109538451A (en) * | 2019-01-14 | 2019-03-29 | 沈阳远大压缩机有限公司 | The hydraulic guiding of super-pressure diaphragm type compressor seals film head |
| CN109538451B (en) * | 2019-01-14 | 2024-03-26 | 沈阳远大压缩机有限公司 | Hydraulic guide type sealing membrane head of ultrahigh pressure diaphragm compressor |
| CN110294065A (en) * | 2019-04-30 | 2019-10-01 | 武汉船用机械有限责任公司 | Load test tooling |
| CN110206782A (en) * | 2019-06-12 | 2019-09-06 | 中国石油大学(华东) | The underwater telescopic fluid cylinder driving locking docking facilities of axle sleeve |
| CN110206782B (en) * | 2019-06-12 | 2020-06-02 | 中国石油大学(华东) | Underwater shaft sleeve telescopic hydraulic cylinder driving locking butt joint device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106499696B (en) | 2018-04-10 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Li Shilei Inventor after: Chen Lijiao Inventor before: Chen Lijiao |
|
| GR01 | Patent grant | ||
| GR01 | Patent grant |