CN201687807U - Hydraulic cylinder locking device - Google Patents
Hydraulic cylinder locking device Download PDFInfo
- Publication number
- CN201687807U CN201687807U CN2010202229775U CN201020222977U CN201687807U CN 201687807 U CN201687807 U CN 201687807U CN 2010202229775 U CN2010202229775 U CN 2010202229775U CN 201020222977 U CN201020222977 U CN 201020222977U CN 201687807 U CN201687807 U CN 201687807U
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- CN
- China
- Prior art keywords
- locking
- cylinder
- clamping block
- locked
- hydraulic jack
- 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.)
- Expired - Fee Related
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Abstract
The utility model relates to the technical field of the components of a hydraulic cylinder, especially to a hydraulic cylinder locking device used to lock the hydraulic cylinder. The locking device comprising a locking rod, a locking member as well as a locking cylinder driving the locking member to move; disposed inside the master cylinder, the locking rod is fixedly connected with the piston of the master cylinder and is provided with a locking slot; when the locking device is in a locked state, the locking member stays in the locking slot and when the locking device comes away, the locking member slides out of the locking slot. The hydraulic cylinder locking device of the utility model not only has an improved function of locking, but it is also easily structured and low cost to produce while having a longer service lifetime.
Description
Technical field
The utility model relates to hydraulic jack component technology field, relates to a kind of hydraulic jack locking device that is used to lock hydraulic jack specifically.
Background technique
The locking device of existing hydraulic jack, be to rely on the cylinder side valve piece of hydraulic jack to lock, this locking device comprises valve member and block, realize the function of taking off lock and locking of hydraulic jack by the open and close of valve member inner spool, and two shortcomings that such locking device exists: on the one hand because valve member itself just allows the problem of leakage, and spool is to rely on the compression of spring to promote, when spool moves reciprocatingly in valve body, spool produces certain wearing and tearing, leakage rate is increased, spring also produces fatigue deformation simultaneously, cause the spool operation not in place, thereby cause that locking device can not well lock hydraulic jack, causes the downslide of hydraulic jack.On the other hand, in case there is impurity in the fluid, easily cause the obstruction of spool, spring can not be replied, and shortens the working life of valve member.
The model utility content
The technical problems to be solved in the utility model is: provide a kind of good lock function that not only has, and it is simple in structure, cost is low, the hydraulic jack locking device of long service life.
The technological scheme that its technical problem that solves the utility model adopts is: a kind of hydraulic jack locking device, comprise the locked cylinder that locking lever, clamping block and driving clamping block move, described locking lever is arranged in the master cylinder and with the main oil cylinder piston bar fixedlys connected, offer locking slot on the described locking lever, offer the clamping block guide groove on the cylinder cap of master cylinder, clamping block guide groove and clamping block guide groove perpendicular with locking slot communicates with locking slot, and clamping block and clamping block guide groove are slidingly connected.When locking device was in the lock state, clamping block was positioned at locking slot, and when locking device was in disengaged condition, clamping block was positioned at outside the locking slot.When locking lever runs to the end of master cylinder, clamping block is positioned at the locking slot of locking lever under the drive of locked cylinder, locking is finished, when if master cylinder glides owing to internal leakage, locking lever glides and contacts with clamping block, clamping block stops the downslide of locking lever, thereby prevents the downslide of master cylinder, plays the effect of locking.Because the hydraulic jack locking device is to snap in by clamping block to realize the function that locks in the locking slot on the locking lever, therefore can guarantee that the hydraulic jack locking position is reliable, and simple in structure, fabricating cost is low, long service life.
Be to improve the locking reliability and the stationarity of hydraulic jack locking device, described locking lever and master cylinder end cap are and are slidingly matched.
Be to improve the locking reliability of hydraulic jack locking device, further, described clamping block has two, and locked cylinder has two, and two clamping blocks are symmetrical arranged with the axis of master cylinder.
For guaranteeing two locked cylinder synchronous operations, further, described two locked cylinders are fixed together by connecting plate.
For making locked cylinder simple in structure, fabricating cost is low, described locked cylinder comprises locking pull bar, locking cylinder body and the cylinder head and the cylinder cap that are installed in the locking cylinder ends respectively, cylinder head and cylinder cap all are liquid sealing with the locking cylinder body and cooperate, there is piston at the middle part of locking pull bar, piston cooperates with the motive sealing of locking cylinder body, and the locking pull bar passes cylinder head fixedlys connected with clamping block, and cylinder head is fixedlyed connected with the master cylinder cylinder cap.
For guaranteeing locking of hydraulic jack locking device and the reliability and stability of taking off lock, be installed with transition plate on the described master cylinder cylinder cap, the displacement limit device of the high-low limit position of the locking pull bar operation of controlling locked cylinder is installed on the transition plate, on the locking pull bar of a locked cylinder in described two locked cylinders collision block is installed, when the locking pull bar moved to limes superiors position or limit inferior position, collision block and displacement limit device touched.
The beneficial effects of the utility model are, hydraulic jack locking device of the present utility model has good lock function, the locking good reliability, and locking device operates steadily, and is simple in structure, cost is low, long service life.
Description of drawings
Fig. 1 is the structural representation of the specific embodiment of hydraulic jack locking device of the present utility model.
Fig. 2 is a hydraulic jack locking device lock state structural representation of the present utility model.
Fig. 3 is a hydraulic jack locking device delocking state structural representation of the present utility model.
Fig. 4 is the enlarged view of A portion among Fig. 2.
Among the figure: 1. locking lever, 1-1. locking slot, 2. clamping block, 3. locking pull bar, 4. locked cylinder, 4-1. locks pull bar, 4-2. the locking cylinder body, 4-3. cylinder head, 4-4. cylinder cap, 4-5. piston, 6. connecting plate, 7. collision block, 8. displacement limit device, 9. transition plate, 10. master cylinder end cap, 10-1. the clamping block guide groove, 11. main oil cylinder piston bars.
Embodiment
The specific embodiment of the hydraulic jack locking device of the present utility model shown in Fig. 1～4 comprises locking lever 1, two clamping blocks 2 and drives 4, two clamping blocks 2 of two locked cylinders that clamping block 2 moves being symmetrical arranged with the axis of master cylinder.Locking lever 1 is arranged on to be in the master cylinder cylinder cap 10 and with master cylinder end cap 10 and is slidingly matched, locking lever 1 is fixedlyed connected with main oil cylinder piston bar 11, offer locking slot 1-1 on the locking lever 1, offer two clamping block guide groove 10-1 on the cylinder cap 10 of master cylinder, clamping block guide groove 10-1 and clamping block guide groove 10-1 perpendicular with locking slot 1-1 communicates with locking slot 1-1, and clamping block 2 is slidingly connected with clamping block guide groove 10-1.Two locked cylinders 4 are fixed together by connecting plate 6.
Locked cylinder 4 comprises locking pull bar 4-1, locking cylinder body 4-2 and the cylinder head 4-3 and the cylinder cap 4-4 that are installed in locking cylinder body 4-2 end respectively, cylinder head 4-3 and cylinder cap 4-4 all are liquid sealing with locking cylinder body 4-2 and cooperate, there is piston 4-5 at the middle part of locking pull bar 4-1, piston 4-5 cooperates with locking cylinder body 4-2 motive sealing, locking pull bar 4-1 passes cylinder head 4-5 fixedlys connected with clamping block 2, and cylinder head 4-3 is fixedlyed connected with master cylinder cylinder cap 10.
Be installed with transition plate 9 on the master cylinder cylinder cap 10, the displacement limit device 8 of the high-low limit position of the locking pull bar 4-1 operation of controlling locked cylinder is installed on the transition plate 9, on the locking pull bar 4-1 of a locked cylinder 4 in two locked cylinders collision block 7 is installed, when locking pull bar 4-1 moved to limes superiors position or limit inferior position, collision block 7 touched with displacement limit device 8.
Clamping block 2 passes the locking slot 1-1 of locking lever 1 under the drive of locking pull bar 4-1, when clamping block 2 runs to a certain degree, locking pull bar 4-1 goes up the lower limit that the collision block of installing 7 touches displacement limit device 8,2 lockings of expression clamping block put in place, 4-1 is out of service for the locking pull bar, finishes locking process.When master cylinder because internal leakage or other reasons when causing main oil cylinder piston bar 11 to glide, it is descending that main oil cylinder piston bar 11 drives locking lever 1, clamping block 2 is stuck among the locking slot 1-1 of locking lever 1, described clamping block 2 stops locking lever 1 to continue to glide, and then the downslide of prevention main oil cylinder piston bar 11, thereby the function of realization locking.
Claims (6)
1. hydraulic jack locking device, it is characterized in that: comprise locking lever (1), the locked cylinder (4) that clamping block (2) and driving clamping block (2) move, described locking lever (1) is arranged in the master cylinder and with main oil cylinder piston bar (11) fixedlys connected, offer locking slot (1-1) on the described locking lever (1), offer clamping block guide groove (10-1) on the cylinder cap of master cylinder (10), clamping block guide groove (10-1) is perpendicular with locking slot (1-1), and clamping block guide groove (10-1) communicates with locking slot (1-1), and clamping block (2) is slidingly connected with clamping block guide groove (10-1).
2. hydraulic jack locking device according to claim 1 is characterized in that: described locking lever (1) and master cylinder end cap (10) are and are slidingly matched.
3. hydraulic jack locking device according to claim 1 is characterized in that: described clamping block (2) has two, and locked cylinder (4) has two, and two clamping blocks (2) are symmetrical arranged with the axis of master cylinder.
4. hydraulic jack locking device according to claim 3 is characterized in that: described two locked cylinders (4) are fixed together by connecting plate (6).
5. according to each described hydraulic jack locking device of claim 1 to 4, it is characterized in that: described locked cylinder (4) comprises locking pull bar (4-1), locking cylinder body (4-2) and the cylinder head (4-3) and the cylinder cap (4-4) that are installed in locking cylinder body (4-2) end respectively, cylinder head (4-3) and cylinder cap (4-4) all are liquid sealing with locking cylinder body (4-2) and cooperate, there is piston (4-5) at the middle part of locking pull bar (4-1), piston (4-5) cooperates with the motive sealing of locking cylinder body (4-2), locking pull bar (4-1) passes cylinder head (4-5) fixedlys connected with clamping block (2), and cylinder head (4-3) is fixedlyed connected with master cylinder cylinder cap (10).
6. hydraulic jack locking device according to claim 5, it is characterized in that: be installed with transition plate (9) on the described master cylinder cylinder cap (10), the displacement limit device (8) of the high-low limit position of locking pull bar (4-1) operation of controlling locked cylinder is installed on the transition plate (9), on the locking pull bar (4-1) of the locked cylinder (4) in described two locked cylinders collision block (7) is installed, when locking pull bar (4-1) moved to limes superiors position or limit inferior position, collision block (7) touched with displacement limit device (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202229775U CN201687807U (en) | 2010-06-05 | 2010-06-05 | Hydraulic cylinder locking device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010202229775U CN201687807U (en) | 2010-06-05 | 2010-06-05 | Hydraulic cylinder locking device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201687807U true CN201687807U (en) | 2010-12-29 |
Family
ID=43376090
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010202229775U Expired - Fee Related CN201687807U (en) | 2010-06-05 | 2010-06-05 | Hydraulic cylinder locking device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201687807U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102011764A (en) * | 2010-06-05 | 2011-04-13 | 常州液压成套设备厂有限公司 | Hydraulic cylinder locking device |
| CN105690265A (en) * | 2016-03-21 | 2016-06-22 | 浙江森永光电设备有限公司 | Air cylinder safety lock device in single polishing machine |
-
2010
- 2010-06-05 CN CN2010202229775U patent/CN201687807U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102011764A (en) * | 2010-06-05 | 2011-04-13 | 常州液压成套设备厂有限公司 | Hydraulic cylinder locking device |
| CN105690265A (en) * | 2016-03-21 | 2016-06-22 | 浙江森永光电设备有限公司 | Air cylinder safety lock device in single polishing machine |
| CN105690265B (en) * | 2016-03-21 | 2018-04-20 | 浙江森永光电设备有限公司 | Cylinder security lock arrangement in single polishing machine |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101229 Termination date: 20150605 |
|
| EXPY | Termination of patent right or utility model |