CN105114396A - Locking device of hydraulic oil cylinder of hydraulic hoist - Google Patents
Locking device of hydraulic oil cylinder of hydraulic hoist Download PDFInfo
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- CN105114396A CN105114396A CN201510601232.7A CN201510601232A CN105114396A CN 105114396 A CN105114396 A CN 105114396A CN 201510601232 A CN201510601232 A CN 201510601232A CN 105114396 A CN105114396 A CN 105114396A
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- locking
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- clamping block
- hydraulic
- hydraulic jack
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Abstract
The invention relates to the technical field of hydraulic hoists, in particular to a locking device of a hydraulic oil cylinder of a hydraulic hoist. The locking device comprises a locking rod and a locking block. One end of the locking rod is provided with a shaft shoulder, and the other end of the locking rod is fixedly connected with a piston rod of the hydraulic oil cylinder. The locking block is provided with an opening which comprises a first through hole and a second through hole communicated with the first through hole. The locking rod penetrates through the opening of the locking block; when the locking rod is located in the first through hole, the shaft shoulder can penetrate through the locking block; when the locking rod is located in the second through hole, the shaft shoulder cannot penetrate through the locking block. According to the locking device of the hydraulic oil cylinder of the hydraulic hoist, the locking state and the unlocking state of the locking rod are switched by controlling the locking block to move up and down, the locking function is good, operation is easy, the service life is long, the locking function is stable, the hydraulic oil cylinder can be effectively prevented from sliding downwards, the safety performance of the hydraulic oil cylinder is improved, the cost is low, and the commercial prospect is wide.
Description
Technical field
The present invention relates to hydraulic hoist technical field, especially a kind of locking device for hydraulic hoist hydraulic jack.
Background technique
The locking device of existing oil cylinder of hydraulic headstock gear, rely on the cylinder side valve block of oil cylinder of hydraulic headstock gear to lock, this locking device comprises valve member and block part, the lock-off of oil cylinder of hydraulic headstock gear and the function of locking is realized 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 inherently allows the problem of leakage, and spool relies on the compression of spring to promote, when spool is in valve body during left to-and-fro motion.Spool produces certain wearing and tearing, leakage rate is increased, spring also produces fatigue deformation simultaneously, causes spool to run not in place, thus causes locking device well can not lock oil cylinder of hydraulic headstock gear, cause the downslide of oil cylinder of hydraulic headstock gear, on the other hand, once there is impurity in fluid, easily cause the blocking of spool, spring can not recover, and shortens the working life of valve member.
Summary of the invention
The technical problem to be solved in the present invention is: in order to solve the problem that locking device stability is low, working life is short that current oil cylinder of hydraulic headstock gear uses, now provide that a kind of structure is simple, cost is low, the locking device for hydraulic hoist hydraulic jack of long service life.
The technical solution adopted for the present invention to solve the technical problems is: a kind of locking device of hydraulic hoist hydraulic jack, and for preventing the piston rod of hydraulic jack from gliding, this locking device comprises:
Locking lever, described locking lever is slidably arranged in hydraulic jack, and described locking lever one end is provided with the shaft shoulder, and the other end is fixedly connected with the piston rod of hydraulic jack;
Clamping block, described clamping block offers opening, described opening is the first through hole and the second through hole that are interconnected, described locking lever is through the opening of described clamping block, and when locking lever is positioned at the first through hole, the described shaft shoulder can pass clamping block, locking lever is in released state, when locking lever is positioned at the second through hole, the described shaft shoulder cannot pass clamping block, and locking lever is in the lock state;
Driving mechanism, described driving mechanism does straight reciprocating motion for driving the relative locking lever of clamping block, realize the released state of locking lever and the switching of lock state, when the shaft shoulder on locking lever moves to certain position through the first through hole on clamping block, clamping block moves down under the drive of driving mechanism, until locking lever is arranged in the second through hole, now clamping block runs and puts in place, locking completes, if hydraulic jack due to internal leakage glide time, the end face that the shaft shoulder on locking lever can be against clamping block stop locking lever to continue to glide with this, thus prevent the piston rod of hydraulic jack from gliding, play lock function.
Further, the cross section of described first through hole and the second through hole is all in arc-shaped, and the circle center line connecting between described first through hole and the second through hole is parallel with described clamping block moving direction.
Further, the cross section of described first through hole is major arc shape, the cross section semicircular in shape of described second through hole.
Preferably, described driving mechanism comprises locking cylinder, described locking cylinder is oil hydraulic cylinder, the end of described hydraulic jack is connected with connecting sleeve, described connecting sleeve inside is communicated with the inside of described hydraulic jack, described locking cylinder is fixed on described connecting sleeve, and the external part of described locking cylinder stretches into described connecting sleeve inside and is fixedly connected with described clamping block.
Further, the inside of described connecting sleeve is fixed with guide rail, described clamping block offers the chute matched with described guide rail, and described slide is arranged in described chute, improves the flexibility that clamping block moves up and down, ensures that clamping block moves along a straight line.
In order to ensure that clamping block locking or lock-off put in place, further, described connecting sleeve is provided with limit switch device, the high-low limit of described clamping block displacement is controlled by described limit switch device, the high-low limit displacement being controlled clamping block by limit switch device ensure that the locking of clamping block or lock-off put in place, improves the stability of locking device.
The invention has the beneficial effects as follows: the locking device of hydraulic hoist hydraulic jack of the present invention is by controlling moving up and down of clamping block, realize the released state of locking lever and the switching of lock state, there is good lock function, simple to operate, long service life, lock function is stablized, effectively can prevent the downslide of hydraulic jack, improve the Safety performance of hydraulic jack, and cost is low, there is good commercial promise.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the present invention is further described.
Fig. 1 is the schematic diagram of the locking device of hydraulic hoist hydraulic jack of the present invention;
Fig. 2 is the released state schematic diagram of locking lever in the locking device of hydraulic hoist hydraulic jack of the present invention;
Fig. 3 is the lock state schematic diagram of locking lever in the locking device of hydraulic hoist hydraulic jack of the present invention.
In figure: 1, hydraulic jack, 2, locking lever, 3, the shaft shoulder, 4, clamping block, the 5, first through hole, the 6, second through hole, 7, locking cylinder, 8, guide rail, 9, connecting sleeve.
Embodiment
In conjunction with the accompanying drawings, the present invention is further detailed explanation.These accompanying drawings are the schematic diagram of simplification, only basic structure of the present invention are described in a schematic way, and therefore it only shows the formation relevant with the present invention.
Embodiment 1
As shown in Figure 1,2 and 3, a kind of locking device of hydraulic hoist hydraulic jack, for preventing the piston rod of hydraulic jack 1 from gliding, this locking device comprises:
Locking lever 2, described locking lever 2 is slidably arranged in hydraulic jack 1, and described locking lever 2 one end is provided with the shaft shoulder 3, and the other end is fixedly connected with the piston rod of hydraulic jack 1;
Clamping block 4, described clamping block 4 offers opening, described opening is the first through hole 5 and the second through hole 6 be interconnected, described locking lever 2 is through the opening of described clamping block 4, and when locking lever 2 is positioned at the first through hole 5, the described shaft shoulder 3 can pass clamping block 4, locking lever 2 is in released state, when locking lever 2 is positioned at the second through hole 6, the described shaft shoulder 3 cannot pass clamping block 4, and locking lever 2 is in the lock state;
Driving mechanism, described driving mechanism does straight reciprocating motion for driving the relative locking lever 2 of clamping block 4, realize the released state of locking lever 2 and the switching of lock state, described driving mechanism comprises locking cylinder 7, described locking cylinder 7 is oil hydraulic cylinder, the end of described hydraulic jack 1 is connected with connecting sleeve 9, described connecting sleeve 9 inside is communicated with the inside of described hydraulic jack 1, described locking cylinder 7 is fixed on described connecting sleeve 9, the external part of described locking cylinder 7 stretches into described connecting sleeve 9 inside and is fixedly connected with described clamping block 4, when the shaft shoulder 3 on locking lever 2 moves to the end of connecting sleeve 9 through the first through hole 5 on clamping block 4, clamping block 4 moves down under the drive of driving mechanism, until locking lever 2 is arranged in the second through hole 6, now clamping block 4 runs and puts in place, locking completes, if hydraulic jack 1 due to internal leakage glide time, the end face that the shaft shoulder 3 on locking lever 2 can be against clamping block 4 stop locking lever 2 to continue to glide with this, thus prevent the piston rod of hydraulic jack 1 from gliding, play lock function.
The cross section of described first through hole 5 and the second through hole 6 is all in arc-shaped, circle center line connecting between described first through hole 5 and the second through hole 6 is parallel with described clamping block 4 moving direction, the cross section of described first through hole 5 is major arc shape, the cross section semicircular in shape of described second through hole 6.
The inside of described connecting sleeve 9 is fixed with guide rail 8, and described clamping block 4 offers the chute matched with described guide rail 8, described guide rail 8 is slidably arranged in described chute, improves the flexibility that clamping block 4 moves up and down, and ensures that clamping block 4 moves along a straight line.
Described connecting sleeve 9 is provided with limit switch device, the high-low limit of described clamping block 4 displacement is controlled by described limit switch device, the high-low limit displacement being controlled clamping block 4 by limit switch device ensure that the locking of clamping block 4 or lock-off put in place, improves the stability of locking device.
Above-mentioned locking device process when concrete utilization is as follows:
First when the shaft shoulder 3 on locking lever 2 moves to the end of connecting sleeve 9 through the first through hole 5 on clamping block 4, clamping block 4 moves down under the drive of locking cylinder 7, clamping block 4 is controlled until it moves to lower limit position by limit switch device, now locking lever 2 is just arranged in the second through hole 6 of clamping block 4, clamping block 4 runs and puts in place, locking completes, if hydraulic jack 1 due to internal leakage glide time, the end face that the shaft shoulder 3 on locking lever 2 can be against clamping block 4 stop locking lever 2 to continue to glide with this, thus prevent the piston rod of hydraulic jack 1 from gliding, play lock function.
Above-mentioned is enlightenment according to desirable embodiment of the present invention, and by above-mentioned description, relevant staff in the scope not departing from this invention technological thought, can carry out various change and amendment completely.The technical scope of this invention is not limited to the content on specification, must determine its technical scope according to right.
Claims (6)
1. a locking device for hydraulic hoist hydraulic jack, for preventing the piston rod of hydraulic jack (1) from gliding, is characterized in that: this locking device comprises:
Locking lever (2), described locking lever (2) is slidably arranged in hydraulic jack (1), described locking lever (2) one end is provided with the shaft shoulder (3), and the other end is fixedly connected with the piston rod of hydraulic jack (1);
Clamping block (4), described clamping block (4) offers opening, described opening is the first through hole (5) and the second through hole (6) that are interconnected, described locking lever (2) is through the opening of described clamping block (4), when locking lever (2) is positioned at the first through hole (5), the described shaft shoulder (3) can pass clamping block (4), locking lever (2) is in released state, when locking lever (2) is positioned at the second through hole (6), the described shaft shoulder (3) cannot pass clamping block (4), locking lever (2) is in the lock state,
Driving mechanism, described driving mechanism does straight reciprocating motion for driving the relative locking lever (2) of clamping block (4), realizes the released state of locking lever (2) and the switching of lock state.
2. the locking device of hydraulic hoist hydraulic jack according to claim 1, it is characterized in that: the cross section of described first through hole (5) and the second through hole (6) is all in arc-shaped, and the circle center line connecting between described first through hole (5) and the second through hole (6) is parallel with described clamping block (4) moving direction.
3. the locking device of hydraulic hoist hydraulic jack according to claim 2, is characterized in that: the cross section of described first through hole (5) is major arc shape, the cross section semicircular in shape of described second through hole (6).
4. the locking device of hydraulic hoist hydraulic jack according to claim 1, it is characterized in that: described driving mechanism comprises locking cylinder (7), described locking cylinder (7) is oil hydraulic cylinder, the end of described hydraulic jack (1) is connected with connecting sleeve (9), described connecting sleeve (9) inside is communicated with the inside of described hydraulic jack (1), described locking cylinder (7) is fixed on described connecting sleeve (9), and the external part of described locking cylinder (7) stretches into described connecting sleeve (9) inside and is fixedly connected with described clamping block (4).
5. the locking device of hydraulic hoist hydraulic jack according to claim 4, it is characterized in that: the inside of described connecting sleeve (9) is fixed with guide rail (8), described clamping block (4) offers the chute matched with described guide rail (8), described guide rail (8) is slidably arranged in described chute.
6. the locking device of hydraulic hoist hydraulic jack according to claim 4, it is characterized in that: (9) are provided with limit switch device to described connecting sleeve, the high-low limit of described clamping block (4) displacement is controlled by described limit switch device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510601232.7A CN105114396A (en) | 2015-09-18 | 2015-09-18 | Locking device of hydraulic oil cylinder of hydraulic hoist |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510601232.7A CN105114396A (en) | 2015-09-18 | 2015-09-18 | Locking device of hydraulic oil cylinder of hydraulic hoist |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105114396A true CN105114396A (en) | 2015-12-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510601232.7A Pending CN105114396A (en) | 2015-09-18 | 2015-09-18 | Locking device of hydraulic oil cylinder of hydraulic hoist |
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| Country | Link |
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| CN (1) | CN105114396A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105422548A (en) * | 2015-12-29 | 2016-03-23 | 常州液压成套设备厂有限公司 | Oil cylinder rotation type locking device of hydraulic opening and closing machine |
| CN108361240A (en) * | 2018-05-09 | 2018-08-03 | 铁岭特种阀门股份有限公司 | A kind of hydraulic cylinder with locking device |
| CN110081043A (en) * | 2019-05-13 | 2019-08-02 | 沈阳东北电力调节技术有限公司 | There are two the hydraulic cylinders of latched position for tool |
| CN110439878A (en) * | 2019-06-27 | 2019-11-12 | 北京安泰隆机电技术有限公司 | A kind of hydraulic bolt mechanism |
| CN113339355A (en) * | 2021-06-24 | 2021-09-03 | 中国长江电力股份有限公司 | Hydraulic locking device and method for completely clamping inside of oil cylinder |
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| JP2003120612A (en) * | 2001-10-12 | 2003-04-23 | Ckd Corp | Air cylinder |
| EP1669612A2 (en) * | 2004-12-09 | 2006-06-14 | Bosch Rexroth Teknik AB | Linear cylinder unit with locking means |
| CN201714744U (en) * | 2010-06-03 | 2011-01-19 | 宁波佳尔灵气动机械有限公司 | Cylinder with locking device |
| CN202338527U (en) * | 2011-11-30 | 2012-07-18 | 宁波亚德客自动化工业有限公司 | Self-locking air cylinder |
| CN205013440U (en) * | 2015-09-18 | 2016-02-03 | 常州液压成套设备厂有限公司 | Hydraulic hoist machine hydraulic cylinder's locking device |
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2015
- 2015-09-18 CN CN201510601232.7A patent/CN105114396A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003120612A (en) * | 2001-10-12 | 2003-04-23 | Ckd Corp | Air cylinder |
| EP1669612A2 (en) * | 2004-12-09 | 2006-06-14 | Bosch Rexroth Teknik AB | Linear cylinder unit with locking means |
| CN201714744U (en) * | 2010-06-03 | 2011-01-19 | 宁波佳尔灵气动机械有限公司 | Cylinder with locking device |
| CN202338527U (en) * | 2011-11-30 | 2012-07-18 | 宁波亚德客自动化工业有限公司 | Self-locking air cylinder |
| CN205013440U (en) * | 2015-09-18 | 2016-02-03 | 常州液压成套设备厂有限公司 | Hydraulic hoist machine hydraulic cylinder's locking device |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105422548A (en) * | 2015-12-29 | 2016-03-23 | 常州液压成套设备厂有限公司 | Oil cylinder rotation type locking device of hydraulic opening and closing machine |
| CN108361240A (en) * | 2018-05-09 | 2018-08-03 | 铁岭特种阀门股份有限公司 | A kind of hydraulic cylinder with locking device |
| CN110081043A (en) * | 2019-05-13 | 2019-08-02 | 沈阳东北电力调节技术有限公司 | There are two the hydraulic cylinders of latched position for tool |
| CN110081043B (en) * | 2019-05-13 | 2023-11-28 | 沈阳东北电力调节技术有限公司 | Hydraulic cylinder with two locking positions |
| CN110439878A (en) * | 2019-06-27 | 2019-11-12 | 北京安泰隆机电技术有限公司 | A kind of hydraulic bolt mechanism |
| CN110439878B (en) * | 2019-06-27 | 2022-10-18 | 北京安泰隆机电技术有限公司 | Hydraulic bolt mechanism |
| CN113339355A (en) * | 2021-06-24 | 2021-09-03 | 中国长江电力股份有限公司 | Hydraulic locking device and method for completely clamping inside of oil cylinder |
| CN113339355B (en) * | 2021-06-24 | 2023-11-28 | 中国长江电力股份有限公司 | Hydraulic locking device and method for completely clamping inside oil cylinder |
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Application publication date: 20151202 |