CN109592560B - Self-locking and self-opening type special lifting appliance for dam - Google Patents
Self-locking and self-opening type special lifting appliance for dam Download PDFInfo
- Publication number
- CN109592560B CN109592560B CN201910095342.9A CN201910095342A CN109592560B CN 109592560 B CN109592560 B CN 109592560B CN 201910095342 A CN201910095342 A CN 201910095342A CN 109592560 B CN109592560 B CN 109592560B
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- Prior art keywords
- shaft sleeve
- suspender
- fixed shaft
- movable shaft
- self
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
- B66C1/10—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
- B66C1/42—Gripping members engaging only the external or internal surfaces of the articles
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Load-Engaging Elements For Cranes (AREA)
Abstract
The self-locking and self-opening type special lifting appliance for the dam comprises a lifting appliance main body and a lifting rod, wherein a blind hole is formed in the bottom of the lifting appliance main body, and two clamping claws are hinged to the bottom of the lifting appliance main body; the top of the suspender is provided with a fixed shaft sleeve, the radial dimension of the bottom of the fixed shaft sleeve is larger than that of the suspender, the outer diameter of the fixed shaft sleeve is smaller than the inner diameter of the blind hole, and the axial dimension of the fixed shaft sleeve is smaller than that of the blind hole; a movable shaft sleeve capable of sliding along the suspender is arranged on the suspender, the movable shaft sleeve is arranged below the fixed shaft sleeve, and a suspender pillow block for limiting the bottom position of the movable shaft sleeve is arranged on the suspender; the two clamping claws are splayed, the minimum distance between the upper parts of the two clamping claws is denoted as a, the maximum distance between the upper parts of the clamping claws is denoted as b, the outer diameter of the fixed shaft sleeve is denoted as c, and c is larger than a and smaller than b; the outer diameter of the movable shaft sleeve is marked as d, and d is larger than a and smaller than or equal to b. The invention can automatically lock and automatically unlock, saves labor and reduces the occurrence of safety accidents.
Description
Technical Field
The invention relates to the technical field of lifting appliances, in particular to a self-locking and self-opening type special lifting appliance for a dam.
Background
The method comprises the steps that fish is cultivated in a river course, dams are trimmed at two sides of the river course, steps are built at positions, close to the river course, of the dams, the lower steps are submerged by water, fish cages are placed on the submerged steps and are made of stainless steel, and holes for fish to enter are formed in the fish cages; when in fishing, a worker places the fish cage on a step submerged by water, and after a period of time, the fish enters the fish cage, and then the fish cage is taken out, so that the worker needs to take out the fish cage by manpower, which is inconvenient; in order to save manpower, the fish cage is hooked and placed by adopting the lifting hook of the crane, when the fish cage needs to be taken out, the fish cage is lifted by the crane, but after the fish cage is lifted in place by the crane, the lifting hook of the crane needs to be taken down by the worker, and when the fish cage is lifted, the lifting hook of the crane needs to be hung on the fish cage by the worker in a water-draining manner, so that although part of manpower is saved, the worker still needs to be launched, the fish cage is unsafe, and therefore, the lifting tool capable of self-locking and self-opening is needed to be designed, the manpower is saved, and the occurrence of safety accidents is reduced.
Disclosure of Invention
The invention aims at: the self-locking and self-opening type special lifting appliance for the dam can be automatically locked and opened, so that manpower is saved, and safety accidents are reduced.
The technical scheme adopted by the invention is as follows:
the self-locking and self-opening type special lifting appliance for the dam comprises a lifting appliance main body and a lifting rod, wherein a blind hole is formed in the bottom of the lifting appliance main body, two clamping claws are hinged to the bottom of the lifting appliance main body, and the two clamping claws are symmetrical about the axis of the blind hole; the top of the suspender is provided with a fixed shaft sleeve, the radial dimension of the bottom of the fixed shaft sleeve is larger than that of the suspender, the outer diameter of the fixed shaft sleeve is smaller than the inner diameter of the blind hole, and the axial dimension of the fixed shaft sleeve is smaller than that of the blind hole; a movable shaft sleeve capable of sliding along the suspender is arranged on the suspender, the movable shaft sleeve is arranged below the fixed shaft sleeve, and a suspender pillow block for limiting the bottom position of the movable shaft sleeve is arranged on the suspender; the two clamping claws are splayed, the minimum distance between the upper parts of the two clamping claws is denoted as a, the maximum distance between the upper parts of the clamping claws is denoted as b, the outer diameter of the fixed shaft sleeve is denoted as c, and c is larger than a and smaller than b; the outer diameter of the movable shaft sleeve is marked as d, and d is larger than a and smaller than or equal to b.
The fixed shaft sleeve comprises an upper component and a lower component, the upper component is arranged above the lower component and is fixedly connected with the lower component, the upper component is a round table with the bottom larger than the top, the lower component is a cylinder, and the bottom of the upper component is overlapped with the top of the lower component.
The upper component and the lower component are integrally formed.
The movable shaft sleeve is a round table with the bottom smaller than the top, a through hole is formed in the middle of the movable shaft sleeve, the suspender is arranged in the through hole of the movable shaft sleeve, and the movable shaft sleeve is in clearance fit or sliding fit with the suspender.
The suspender pillow block and the suspender are integrally formed, and the outer diameter of the suspender pillow block is larger than the diameter of the through hole of the movable shaft sleeve.
The lower part of the blind hole is a conical hole with a large bottom and a small top, the upper part of the blind hole is a cylindrical hole, the conical hole is communicated with the cylindrical hole, and the diameter of the top of the conical hole is the same as that of the cylindrical hole; the inner diameter of the blind hole is the inner diameter of the cylindrical hole.
The upper part of the clamping claw is a clamping part, the top surface of the clamping part is a horizontal plane, and the inner side surface of the clamping part is an inclined plane; the inclined surfaces of the two clamping jaws are splayed.
Two extending parts are arranged at the bottom of the lifting appliance main body, the two extending parts are symmetrically arranged about the axis of the blind hole, the two extending parts correspond to the two clamping claws one by one, and the clamping claws are hinged to the extending parts.
The invention can automatically lock and automatically open, saves labor, reduces the occurrence of safety accidents, drives the two clamping jaws to move towards the suspender, and realizes self-locking after the fixed shaft sleeve passes through the clamping parts of the two clamping jaws, the top surfaces of the clamping parts are tightly propped against the bottom of the fixed shaft sleeve; the movable shaft sleeve plays a transitional role, and after the lifting is completed, the lifting appliance drives the two clamping jaws to be clamped on the movable shaft sleeve, the movable shaft sleeve is driven to move upwards to the fixed shaft sleeve, the lifting appliance continues to move upwards, the two clamping jaws sequentially pass through the movable shaft sleeve and the fixed shaft sleeve, and the self-opening of the lifting appliance is realized, so that the lifting appliance can be self-locked and self-opened, the operation is convenient, and the labor is saved; the upper component part of the fixed shaft sleeve is a round table, so that the claw can conveniently slide along the surface of the fixed shaft sleeve; the movable shaft sleeve is a round table with the bottom smaller than the top, when the lifting appliance moves downwards, the claw can conveniently move along the surface of the movable shaft sleeve, and when the lifting appliance moves upwards, the claw can conveniently be clamped on the movable shaft sleeve; the lower part of the blind hole is a conical hole with a large bottom and a small top, so that the fixed shaft sleeve can conveniently enter the blind hole; the top surface of joint portion is the horizontal plane, makes things convenient for joint portion top tightly in the bottom of fixed axle sleeve, and the medial surface of joint portion is the inclined plane, makes things convenient for its surface motion along fixed axle sleeve and movable axle sleeve.
Drawings
FIG. 1 is a schematic diagram of the structure of the present invention;
FIG. 2 is a schematic diagram of the self-locking structure of the present invention;
FIG. 3 is a schematic view of the structure of the claw clamped on the movable shaft sleeve when the invention is self-opened;
fig. 4 is a schematic structural view of the movable shaft sleeve propping against the fixed shaft sleeve when the invention is self-opened.
Detailed Description
As shown in fig. 1-4, a self-locking and self-opening type special lifting appliance for a dam comprises a lifting appliance main body 1 and a lifting rod 7, wherein a blind hole 2 is formed in the bottom of the lifting appliance main body 1, two clamping claws 4 are hinged to the bottom of the lifting appliance main body 1, the two clamping claws 4 are symmetrical about the axis of the blind hole 2, and the two clamping claws 4 are arranged on two sides of the blind hole 2; the top of the suspender 7 is provided with a fixed shaft sleeve 3, the fixed shaft sleeve 3 is fixedly connected with the suspender 7, the radial dimension of the bottom of the fixed shaft sleeve 3 is larger than that of the suspender 7, the outer diameter of the fixed shaft sleeve 3 is smaller than the inner diameter of the blind hole 2, and the axial dimension of the fixed shaft sleeve 3 is smaller than that of the blind hole 2; a movable shaft sleeve 5 capable of sliding along the boom 7 is arranged on the boom 7, the movable shaft sleeve 5 is arranged below the fixed shaft sleeve 3, and a boom pillow block 6 for limiting the bottom position of the movable shaft sleeve 5 is arranged on the boom 7; the two clamping claws 4 are splayed, the minimum distance between the upper parts of the two clamping claws 4 is denoted as a, the maximum distance between the upper parts of the clamping claws 4 is denoted as b, the outer diameter of the fixed shaft sleeve 3 is denoted as c, and c is the maximum outer diameter of the fixed shaft sleeve 3, and c is larger than a and smaller than b; the outer diameter of the movable shaft sleeve 5 is denoted as d, d being the maximum outer diameter of the movable shaft sleeve, d being greater than a and less than or equal to b.
The upper parts of the clamping claws 4 are clamping parts 41, and when the two clamping claws 4 are in a natural state, the distance between the upper parts of the two clamping claws 4 is the minimum distance a; when the two claws 4 are spread to a nearly vertical state, the distance between the upper parts of the two claws 4 is the maximum distance b.
The fixed shaft sleeve 3 comprises an upper component part and a lower component part, the upper component part is arranged above the lower component part and is fixedly connected with the lower component part, the upper component part is a round table with the bottom larger than the top, the lower component part is a cylinder, the bottom of the upper component part is overlapped with the top of the lower component part, namely, the diameter of the bottom of the upper component part is equal to the diameter of the top of the lower component part; the upper component part of the fixed shaft sleeve 3 is a round table, so that the claw 4 can conveniently slide along the surface of the fixed shaft sleeve; the outer diameter of the fixed sleeve 3 is denoted as c, c being the diameter of the lower component.
The upper component and the lower component are integrally formed.
The movable shaft sleeve 5 is a round table with the bottom smaller than the top, a through hole is formed in the middle of the movable shaft sleeve 5, the suspender 7 is arranged in the through hole of the movable shaft sleeve 5, and the movable shaft sleeve 5 is in clearance fit or sliding fit with the suspender 7; the movable shaft sleeve 5 is a round table with the bottom smaller than the top, when the lifting appliance moves downwards, the claw 4 can conveniently move along the surface of the movable shaft sleeve, and when the lifting appliance moves upwards, the claw 4 can conveniently be clamped on the movable shaft sleeve 5; the outer diameter of the movable sleeve 5 is denoted d, d being the diameter of the top of the movable sleeve.
The boom pillow block 6 and the boom 7 are integrally formed, and the outer diameter of the boom pillow block 6 is larger than the diameter of the through hole of the movable shaft sleeve 5.
The lower part of the blind hole 2 is a conical hole with a large bottom and a small top, the fixed shaft sleeve 3 can conveniently enter the blind hole 2, the upper part of the blind hole 2 is a cylindrical hole, the conical hole is communicated with the cylindrical hole, and the diameter of the top of the conical hole is the same as that of the cylindrical hole; the inner diameter of the blind hole 2 is the inner diameter of a cylindrical hole.
The upper part of the clamping claw 4 is provided with a clamping part 41, the top surface of the clamping part 41 is a horizontal plane, the clamping part 41 is conveniently propped against the bottom of the fixed shaft sleeve 3, the inner side surface of the clamping part 41 is provided with an inclined plane, and the clamping part is conveniently moved along the surfaces of the fixed shaft sleeve 3 and the movable shaft sleeve 5; the inclined surfaces of the two clamping claws 4 are splayed.
Two extending parts 11 are arranged at the bottom of the lifting appliance main body 1, the two extending parts 11 are symmetrically arranged about the axis of the blind hole 2, the two extending parts 11 are in one-to-one correspondence with the two clamping claws 4, and the clamping claws 4 are hinged on the extending parts.
When in use, the suspender 7 is arranged on the fish cage, the suspender 7 is fixedly connected with an object to be hoisted, the suspender 7 extends out of the water surface by adopting conventional fixed connection modes such as welding, bolting and the like, the lifting appliance body 1 is convenient to be matched with the suspender 7, the lifting device is fixedly connected with the top of the lifting appliance body 1, in the embodiment, a crane lifting mechanism is adopted, and the lifting mechanism of the crane drives the lifting appliance body 1 to move up and down.
As shown in fig. 1 and 2, during self-locking, the lifting mechanism of the crane drives the lifting appliance main body 1 to move downwards, the fixed shaft sleeve 3 jacks up the clamping jaw 4, the clamping part 41 of the clamping jaw 4 moves downwards along the outer side of the fixed shaft sleeve 3, the fixed shaft sleeve 3 enters the blind hole 2, a space is reserved between the top of the fixed shaft sleeve 3 and the blind hole 2, the clamping part 41 of the clamping jaw 4 moves to completely pass through the fixed shaft sleeve 3, then the movement is stopped, the clamping jaw 4 is locked under the action of gravity, the top surface of the clamping part 41 upwards props against the fixed shaft sleeve 3, self-locking is realized, the lifting mechanism of the crane drives the lifting appliance main body 1 to move upwards, the lifting appliance main body 1 drives the lifting rod 7 to lift upwards, and the lifting rod 7 drives the fish cage to move to a designated place.
As shown in fig. 3, when the lifting mechanism of the crane drives the lifting appliance main body 1 to move downwards, the movable shaft sleeve 5 pushes the claw 4 open, and when the fixed shaft sleeve 3 is pushed to the top of the blind hole 2, the lifting appliance moves to the limit position, and the claw 4 locks the movable shaft sleeve 5 under the action of gravity; as shown in fig. 4, the lifting mechanism of the crane drives the lifting appliance main body 1 to move upwards, the claw 4 drives the movable shaft sleeve 5 to move upwards, the movable shaft sleeve 5 moves upwards until the lifting appliance is propped against the fixed shaft sleeve 3, the lifting appliance continues to ascend, the claw 4 is propped up by the movable shaft sleeve 5 under the action of pulling force, the claw 4 continues to ascend after being opened until the claw 4 is completely separated from the fixed shaft sleeve 3, and as shown in fig. 1, the claw 4 and the movable shaft sleeve 5 return to the original positions under the action of gravity, so that self-opening is completed.
After a period of time, when the fish cage is required to be salvaged, the lifting appliance body 1 and the lifting rod 7 are self-locked, the fish cage is taken out and placed at a designated place, and then the fish cage is self-opened.
In this embodiment, the shape of the boom 7 is a cylinder, and it is within the scope of the present invention to change the shape of the boom 7 to other shapes such as a quadrangular prism, a hexagonal prism, etc. on the basis of this embodiment, or to simply change the shapes of the fixed shaft sleeve 3, the blind hole 2, and the movable shaft sleeve 5.
The above embodiments are illustrative of the present invention, and not limiting, and any simple modifications of the present invention fall within the scope of the present invention.
Claims (4)
1. A auto-lock is from open special lifting device for dam, includes lifting device main part and jib, its characterized in that: the bottom of the lifting appliance main body is provided with a blind hole, the bottom of the lifting appliance main body is hinged with two clamping claws, and the two clamping claws are symmetrical about the axis of the blind hole; the top of the suspender is provided with a fixed shaft sleeve, the radial dimension of the bottom of the fixed shaft sleeve is larger than that of the suspender, the outer diameter of the fixed shaft sleeve is smaller than the inner diameter of the blind hole, and the axial dimension of the fixed shaft sleeve is smaller than that of the blind hole; a movable shaft sleeve capable of sliding along the suspender is arranged on the suspender, the movable shaft sleeve is arranged below the fixed shaft sleeve, and a suspender pillow block for limiting the bottom position of the movable shaft sleeve is arranged on the suspender; the two clamping claws are splayed, the minimum distance between the upper parts of the two clamping claws is denoted as a, the maximum distance between the upper parts of the clamping claws is denoted as b, the outer diameter of the fixed shaft sleeve is denoted as c, and c is larger than a and smaller than b; the outer diameter of the movable shaft sleeve is marked as d, and d is larger than a and smaller than or equal to b;
the fixed shaft sleeve comprises an upper component part and a lower component part, the upper component part is arranged above the lower component part and is fixedly connected with the lower component part, the upper component part is a round table with the bottom larger than the top, the lower component part is a cylinder, and the bottom of the upper component part is overlapped with the top of the lower component part;
the movable shaft sleeve is a round table with the bottom smaller than the top, a through hole is formed in the middle of the movable shaft sleeve, the suspender is arranged in the through hole of the movable shaft sleeve, and the movable shaft sleeve is in clearance fit or sliding fit with the suspender; the lower part of the blind hole is a conical hole with a large bottom and a small top, the upper part of the blind hole is a cylindrical hole, the conical hole is communicated with the cylindrical hole, and the diameter of the top of the conical hole is the same as that of the cylindrical hole; the inner diameter of the blind hole is the inner diameter of the cylindrical hole; the upper part of the clamping claw is a clamping part, the top surface of the clamping part is a horizontal plane, and the inner side surface of the clamping part is an inclined plane; the inclined surfaces of the two clamping jaws are splayed.
2. The self-locking self-opening spreader for dams according to claim 1, characterized in that: the upper component and the lower component are integrally formed.
3. The self-locking self-opening spreader for dams according to claim 1, characterized in that: the suspender pillow block and the suspender are integrally formed, and the outer diameter of the suspender pillow block is larger than the diameter of the through hole of the movable shaft sleeve.
4. The self-locking self-opening spreader for dams of claim 1, characterized in that: two extending parts are arranged at the bottom of the lifting appliance main body, the two extending parts are symmetrically arranged about the axis of the blind hole, the two extending parts correspond to the two clamping claws one by one, and the clamping claws are hinged to the extending parts.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910095342.9A CN109592560B (en) | 2019-01-31 | 2019-01-31 | Self-locking and self-opening type special lifting appliance for dam |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910095342.9A CN109592560B (en) | 2019-01-31 | 2019-01-31 | Self-locking and self-opening type special lifting appliance for dam |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109592560A CN109592560A (en) | 2019-04-09 |
| CN109592560B true CN109592560B (en) | 2023-09-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910095342.9A Active CN109592560B (en) | 2019-01-31 | 2019-01-31 | Self-locking and self-opening type special lifting appliance for dam |
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| Country | Link |
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| CN (1) | CN109592560B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110921488B (en) * | 2019-12-13 | 2021-01-22 | 大连理工大学 | Automatic locking device for recycling of water inlet test device |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4440432A (en) * | 1982-02-22 | 1984-04-03 | The Crosby Group, Inc. | Self-locking, quick release, latched hook |
| CN201338906Y (en) * | 2008-12-30 | 2009-11-04 | 天津滨海新宇科技有限公司 | Hanging hook unit for automatic locking type hoisting installation |
| CN201376839Y (en) * | 2009-08-20 | 2010-01-06 | 广东建华管桩有限公司 | Prestressed concrete pipe die self-weight self-locking pneumatic swinging device |
| CN101863020A (en) * | 2010-06-11 | 2010-10-20 | 中国电子科技集团公司第四十五研究所 | Multifunctional manipulator |
| CN102717388A (en) * | 2012-07-05 | 2012-10-10 | 日立电梯电机（广州）有限公司 | Front manipulator and workpiece grabbing and overturning device |
| JP2015151259A (en) * | 2014-02-19 | 2015-08-24 | 積水ハウス株式会社 | Suspender |
| CN105270992A (en) * | 2014-07-24 | 2016-01-27 | 王秀兰 | Pipe lifting tool with self-locking structure |
| CN206288859U (en) * | 2016-12-22 | 2017-06-30 | 洛阳豪智机械有限公司 | A kind of locking plate processes the three-jaw caliper brake hoisting device of lifting |
-
2019
- 2019-01-31 CN CN201910095342.9A patent/CN109592560B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4440432A (en) * | 1982-02-22 | 1984-04-03 | The Crosby Group, Inc. | Self-locking, quick release, latched hook |
| CN201338906Y (en) * | 2008-12-30 | 2009-11-04 | 天津滨海新宇科技有限公司 | Hanging hook unit for automatic locking type hoisting installation |
| CN201376839Y (en) * | 2009-08-20 | 2010-01-06 | 广东建华管桩有限公司 | Prestressed concrete pipe die self-weight self-locking pneumatic swinging device |
| CN101863020A (en) * | 2010-06-11 | 2010-10-20 | 中国电子科技集团公司第四十五研究所 | Multifunctional manipulator |
| CN102717388A (en) * | 2012-07-05 | 2012-10-10 | 日立电梯电机（广州）有限公司 | Front manipulator and workpiece grabbing and overturning device |
| JP2015151259A (en) * | 2014-02-19 | 2015-08-24 | 積水ハウス株式会社 | Suspender |
| CN105270992A (en) * | 2014-07-24 | 2016-01-27 | 王秀兰 | Pipe lifting tool with self-locking structure |
| CN206288859U (en) * | 2016-12-22 | 2017-06-30 | 洛阳豪智机械有限公司 | A kind of locking plate processes the three-jaw caliper brake hoisting device of lifting |
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| CN109592560A (en) | 2019-04-09 |
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