CN207315775U - A kind of stretching with mechanical locking device hydraulic cylinder in place - Google Patents
A kind of stretching with mechanical locking device hydraulic cylinder in place Download PDFInfo
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- CN207315775U CN207315775U CN201721298748.XU CN201721298748U CN207315775U CN 207315775 U CN207315775 U CN 207315775U CN 201721298748 U CN201721298748 U CN 201721298748U CN 207315775 U CN207315775 U CN 207315775U
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Abstract
The utility model discloses a kind of stretching with mechanical locking device hydraulic cylinder in place, including cylinder cap, cylinder barrel and cylinder seat, on the cylinder barrel hydraulic fluid port A is offered close to cylinder cap side, on cylinder barrel hydraulic fluid port B is offered close to cylinder seat side, piston rod is arranged with cylinder barrel, one end of piston rod is pierced by cylinder cap, the other end of piston rod is connected with fixed piston, it is fluted along opening up axially inwards for fixed piston on the end face of the fixed piston other end, the floating piston that can be moved axially along groove is arranged with groove, the end of the fixed piston is equipped with plug screw, side on the outer wall of fixed piston close to piston rod offers lockhole, closing piece is equipped with lockhole, the inner wall of cylinder offers the locked groove being adapted to closing piece close to the side of cylinder cap.By way of built-in machines locking device so that can overturn with after lifting equipment, allow it to keep certain posture not change；Latch mechanism and hydraulic stem move together, and ensure that uniform force during oiling, and protective effect is played to cylinder barrel.
Description
Technical field
It the utility model is related to hydraulic cylinder field, more particularly to a kind of stretching with mechanical locking device hydraulic cylinder in place.
Background technology
When hydraulic cylinder is used to lifting or overturning certain equipment, after often requiring that equipment reaches designated position, keep unique
Posture, and this posture must not change with time and change.In this case, now main at present solution is：
1st, in exterior individually one locking device of increase.Outside increase mechanical locking device can allow cost to increase, and corresponding
Hydraulic system become complicated, make the reliability of whole hydraulic system reduce.Also need to solve in control, first untie exterior increasing
The locking device added, then could act the oil cylinder of upset or lifting, also become complicated in control.
2nd, increase accumulator in hydraulic system, make the posture retention time longer.After increasing accumulator, oil cylinder is enabled to
Posture keep more long, but the problem of long-time posture is constant cannot be fully solved.And accumulator temporary space is big, at some
The occasion that space requires is not applied to, and needs to fill the nitrogen of certain pressure inside accumulator, is clear and definite in some occasions
Forbid what is used.
3rd, the precision of oil cylinder is increased, the number of plies of increase oil cylinder inside cylinder cap, increases cylinder seal performance so that posture is kept
It is longer.The method can only also increase the time of posture holding, it is impossible to be fully solved the problem of posture is constant.And oil cylinder processing essence
Degree is higher, and corresponding oil cylinder cost is higher.
Application number CN201120377246.2 discloses a kind of steel ball locking type hydraulic cylinder, which includes sealing shroud
Cylinder, cylinder barrel, spring, You Sai, steel ball, piston, piston rod and cylinder seat；Wherein piston rod is located in cylinder barrel and can move freely, living
The tail end of stopper rod is provided with piston, and cylinder barrel is divided into rod chamber and rodless cavity by piston；On cylinder barrel and positioned at the side of rod chamber
Rod chamber hydraulic fluid port is provided with, rodless cavity hydraulic fluid port is provided with cylinder barrel and positioned at the side of rodless cavity；The head end of cylinder barrel is connected with cylinder seat,
The tail end of cylinder barrel is connected with seal sleeve, its head end can be stretched out from seal sleeve during piston rod movement；On the inner wall of cylinder barrel,
And an annular groove is provided with the position of piston stroke end, it is ball-and-socket, the section of ball-and-socket is arc or semicircle；In ball-and-socket
Left side along cylinder barrel inner wall be provided with trip plug, the outer contour for swimming plug is approximately the stair-stepping circle of two-stage, its radius is less
Stepped part is located at the inner side of ball-and-socket, and the less stepped part of its radius is close to piston；It is evenly equipped with the circumferential direction of piston
The radial hole of several opening directions radially, a steel ball, its radius and the radius in ball-and-socket section are placed in each radial hole
Match；Be provided with annular groove on the end face of trip plug in piston, the bottom of groove with it is uniformly distributed each in piston circumferential direction
The bottom of radial hole communicates, the problem of for a long time posture cannot being kept inconvenient this solution solves hydraulic cylinder, but due to this side
The hydraulic fluid port of case is opened in trip plug nearby, during oiling, can cause the discontinuity of trip plug, cylinder barrel is easily caused after long-time use
Inner wall is damaged deformation.
Utility model content
The utility model provides a kind of reliably hydraulic cylinder with mechanical locking device, solves hydraulic pressure in the prior art
Cylinder cannot long-time posture it is constant, while the problem of easily cause inner wall of cylinder to be damaged deformation because of unbalance stress.
The technical solution adopted in the utility model is as follows：
A kind of stretching with mechanical locking device hydraulic cylinder, including sequentially connected cylinder cap, cylinder barrel and cylinder seat in place, it is described
The hydraulic fluid port A connected with cylinder barrel is offered close to cylinder cap side on cylinder barrel, offers close to cylinder seat side on cylinder barrel and is connected with cylinder barrel
Hydraulic fluid port B, be arranged with and can be pierced by cylinder cap along the piston rod of the axial movement of cylinder barrel, one end of piston rod in cylinder barrel, piston rod
The other end is connected with fixed piston, fluted along opening up axially inwards for fixed piston on the end face of the fixed piston other end, recessed
Be arranged with the floating piston that can be moved axially along groove in groove, the end of the fixed piston is equipped with plug screw, fixed piston outside
Lockhole is offered close to the side of piston rod on wall, is equipped with closing piece in lockhole, the inner wall of cylinder is opened up close to the side of cylinder cap
There is the locked groove being adapted to closing piece.
In such scheme, form closed chamber A between the floating piston and bottom portion of groove, floating piston and plug screw it
Between formed in closed chamber B, the chamber B and be equipped with spring, the both ends of spring connect floating piston and plug screw respectively.
In such scheme, the bottom portion of groove uniformly with offering through hole A, offers the axis of axis and plug screw on plug screw
Parallel through hole B, the through hole A connection hydraulic fluid port A and chamber A, through hole B connection hydraulic fluid port B and chamber B.
In such scheme, the floating piston close to one end of bottom portion of groove position corresponding with lockhole be equipped with for card
The firmly bayonet of closing piece.
In such scheme, the closing piece is steel ball, and lockhole, locked groove, bayonet are adapted to closing piece.
The application method of the utility model is：
(1) lock：During oil supply port B pressure supply, hydraulic oil drives fixed piston to be moved to the left, and promotes piston rod to stretch out, works as steel
When ball is moved to locked groove position, steel ball gets into steel ball in locked groove under the action of spring force and hydraulic coupling.When steel ball is into locked groove
Afterwards, floating piston does not just stop that floating piston is just moved to the left, and by steel ball lock in locked groove, completes locking.
(2) unlock：During oil supply port A pressure supply, hydraulic oil is passed through chamber A, allows floating piston to overcome spring force is past to move right.
In mobile process, steel ball is also subject to thrust to the right under the action of hydraulic coupling, and steel ball skids off locked groove under component effect.
When floating piston can not block steel ball, whole steel ball extrudes locked groove, and piston rod is withdrawn, and completes unlock.
In conclusion by adopting the above-described technical solution, the beneficial effects of the utility model are：
1. the utility model is by way of built-in machines locking device so that can overturn with after lifting equipment, allow it
Certain posture is kept not change, and without external agency, it is not required that complicated hydraulic system, more need not individually unlock
Circuit, meanwhile, by the way of latch mechanism and hydraulic stem move together, it ensure that uniform force during oiling, cylinder barrel played
Protective effect so that whole device is more simple and reliable, and repair enhanced convenience.
2. the utility model is promoted by the setting of chamber A and chamber B by the way that hydraulic oil is passed through in chamber A or chamber B
The mode that floating piston moves forward and backward, completes the lock and unlock of whole hydraulic cylinder, and this mode ensure that the steady of whole device
Overall stress balance is qualitatively maintained, protective effect is played to whole cylinder barrel, it is further by the setting of spring
The protective effect strengthened to cylinder barrel.
3. the utility model is uniformly provided with through hole A by bottom portion of groove, axis and plug screw are uniformly provided with plug screw
Axis parallel through hole B, the through hole A connection hydraulic fluid port A and chamber A, through hole B connect the mode of hydraulic fluid port B and chamber B so that liquid
Pressure oil uniformly enters or discharges chamber A and chamber B, maintains overall stress balance, and guarantor is played to whole cylinder barrel
Shield acts on.
4. the setting that the utility model passes through bayonet so that when whole device is in unlocked state, closing piece is always positioned at
In lockhole, the reliability of mechanical lock mechanism ensure that, can guarantee that can lock every time, be not in lock-off phenomenon.
5. the utility model is steel ball by the closing piece, the mode that lockhole, locked groove, bayonet are adapted to closing piece, in nothing
In the case of pressure, loading is born by shearing by multiple steel balls, admittedly larger axial loading can be born so that total is more
Stablize, at the same it is more convenient in use.
Brief description of the drawings
The utility model will illustrate by example and with reference to the appended drawing, wherein：
Fig. 1 is the utility model structure diagram；
Parts title wherein corresponding to reference numeral is as follows：1- cylinder caps, 2- hydraulic fluid ports A, 3- locked groove, 4- cylinder barrels, 5- live
Stopper rod, 6- fixed pistons, 7- through holes A, 8- lockhole, 9- closing pieces, 10- bayonets, 11- floating pistons, 12- springs, 13- grooves,
14- plug screws, 15- through holes B, 16- hydraulic fluid port B, 17- cylinder seat.
Embodiment
All features disclosed in this specification, or disclosed all methods or during the step of, except mutually exclusive
Feature and/or step beyond, can combine in any way.
Embodiment 1
A kind of as shown in Figure 1, stretching with mechanical locking device hydraulic cylinder, including sequentially connected cylinder cap 1, cylinder barrel in place
4 and cylinder seat 17, hydraulic fluid port A2 connect with cylinder barrel 4 is offered close to 1 side of cylinder cap on the cylinder barrel 4, close cylinder seat on cylinder barrel 4
17 sides offer the hydraulic fluid port B16 connected with cylinder barrel 4, be arranged with cylinder barrel 4 can along the piston rod 5 of the axial movement of cylinder barrel 4,
One end of piston rod 5 is pierced by cylinder cap 1, and the other end of piston rod 5 is connected with fixed piston 6, on the end face of 6 other end of fixed piston
Fluted 13 are opened up axially inwards along fixed piston 6, and the floating piston that can be moved axially along groove 13 is arranged with groove 13
11, the end of the fixed piston 6 is equipped with plug screw 14, and lockhole is offered close to the side of piston rod 5 on the outer wall of fixed piston 6
8, lockhole 8 is interior to be equipped with closing piece 9, and 4 inner wall of cylinder barrel offers the locked groove 3 being adapted to closing piece 9 close to the side of cylinder cap 1.
Embodiment 2
On the basis of embodiment 1, closed chamber A is formed between 13 bottom of floating piston 11 and groove, is floated
Formed between piston 11 and plug screw 14 in closed chamber B, the chamber B and be equipped with spring 12, the both ends of spring 12 connect respectively
Floating piston 11 and plug screw 14.
Embodiment 3
On the basis of embodiment 1 or 2,13 bottom of groove offers uniformly with offering through hole A7 on plug screw 14
Axis the through hole B15, the through hole A7 connection hydraulic fluid port A2 and chamber A, through hole B15 parallel with the axis of plug screw 14 connect hydraulic fluid port
B16 and chamber B.
Embodiment 4
On the basis of above-described embodiment, the floating piston 11 is corresponding with lockhole 8 close to one end of 13 bottom of groove
Position is equipped with and the bayonet 10 for blocking closing piece 9.
Embodiment 5
On the basis of above-described embodiment, the closing piece 9 is steel ball, and lockhole 8, locked groove 3, bayonet 10 are adapted to closing piece 9.
The above, is only the preferred embodiment of the utility model, is not intended to limit the utility model, the utility model
Scope of patent protection be subject to claims, what every specification and accompanying drawing content with the utility model was made is equal
Structure change, similarly should be included in the scope of protection of the utility model.
Claims (5)
- A kind of 1. stretching with mechanical locking device hydraulic cylinder, including sequentially connected cylinder cap (1), cylinder barrel (4) and cylinder seat in place (17), it is characterised in that：On the cylinder barrel (4) the hydraulic fluid port A (2) connected with cylinder barrel (4), cylinder are offered close to cylinder cap (1) side The hydraulic fluid port B (16) connected with cylinder barrel (4) is offered close to cylinder seat (17) side on cylinder (4), being arranged with cylinder barrel (4) can be along cylinder barrel (4) piston rod (5) of axial movement, one end of piston rod (5) are pierced by cylinder cap (1), and the other end of piston rod (5) is connected with admittedly Fixed piston (6), opens up fluted (13), groove on the end face of fixed piston (6) other end axially inwards along fixed piston (6) (13) floating piston (11) that can be moved axially along groove (13) is arranged with, the end of the fixed piston (6) is equipped with plug screw (14), lockhole (8) is offered close to the side of piston rod (5) on the outer wall of fixed piston (6), closing piece is equipped with lockhole (8) (9), cylinder barrel (4) inner wall offers the locked groove (3) being adapted to closing piece (9) close to the side of cylinder cap (1).
- A kind of 2. stretching with mechanical locking device according to claim 1 hydraulic cylinder in place, it is characterised in that：It is described floating Closed chamber A is formed between piston (11) and groove (13) bottom, is formed between floating piston (11) and plug screw (14) close Spring (12) is equipped with the chamber B, the chamber B that close, the both ends of spring (12) connect floating piston (11) and plug screw respectively (14)。
- A kind of 3. stretching with mechanical locking device according to claim 1 or 2 hydraulic cylinder in place, it is characterised in that：Institute Groove (13) bottom is stated uniformly with offering through hole A (7), and it is parallel with the axis of plug screw (14) that axis is offered on plug screw (14) Through hole B (15), through hole A (7) the connection hydraulic fluid port A (2) and chamber A, through hole B (15) connection hydraulic fluid port B (16) and chamber B.
- A kind of 4. stretching with mechanical locking device according to claim 1 hydraulic cylinder in place, it is characterised in that：It is described floating Piston (11) is equipped with and the card for blocking closing piece (9) close to one end position corresponding with lockhole (8) of groove (13) bottom Mouth (10).
- A kind of 5. stretching with mechanical locking device according to claim 1 hydraulic cylinder in place, it is characterised in that：The lock Block (9) is steel ball, and lockhole (8), locked groove (3), bayonet (10) are adapted to closing piece (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721298748.XU CN207315775U (en) | 2017-10-10 | 2017-10-10 | A kind of stretching with mechanical locking device hydraulic cylinder in place |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721298748.XU CN207315775U (en) | 2017-10-10 | 2017-10-10 | A kind of stretching with mechanical locking device hydraulic cylinder in place |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207315775U true CN207315775U (en) | 2018-05-04 |
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ID=62429586
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721298748.XU Active CN207315775U (en) | 2017-10-10 | 2017-10-10 | A kind of stretching with mechanical locking device hydraulic cylinder in place |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207315775U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110356545A (en) * | 2019-08-21 | 2019-10-22 | 成都弗格森液压机电有限公司 | A kind of unmanned plane undercarriage control retaining mechanism |
| CN115013381A (en) * | 2022-07-02 | 2022-09-06 | 安徽工程大学 | Multistage hydraulic cylinder guiding device with locking function |
-
2017
- 2017-10-10 CN CN201721298748.XU patent/CN207315775U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110356545A (en) * | 2019-08-21 | 2019-10-22 | 成都弗格森液压机电有限公司 | A kind of unmanned plane undercarriage control retaining mechanism |
| CN115013381A (en) * | 2022-07-02 | 2022-09-06 | 安徽工程大学 | Multistage hydraulic cylinder guiding device with locking function |
| CN115013381B (en) * | 2022-07-02 | 2024-05-28 | 安徽工程大学 | Multistage hydraulic cylinder guiding device with locking function |
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