CN216613737U - Unhooking prevention device for crane - Google Patents
Unhooking prevention device for crane Download PDFInfo
- Publication number
- CN216613737U CN216613737U CN202220116130.1U CN202220116130U CN216613737U CN 216613737 U CN216613737 U CN 216613737U CN 202220116130 U CN202220116130 U CN 202220116130U CN 216613737 U CN216613737 U CN 216613737U
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- shaped
- arc
- square block
- clamping plate
- plate
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- 230000002265 prevention Effects 0.000 title claims description 15
- 230000000670 limiting effect Effects 0.000 description 2
- 230000001174 ascending effect Effects 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
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Abstract
The utility model relates to an anti-unhooking device for a crane, which comprises a lifting hook and an anti-unhooking structure; the goods to be lifted are hooked through the lower end of the arc hook body, then the arc clamping plate is manually rotated, the arc clamping plate rotates from the left side to the right side of the opening, after the upper end of the arc clamping plate enters the opening, the clamping tooth part is contacted with the inclined tooth part at the upper end of the arc clamping plate, meanwhile, the second position of the L-shaped clamping plate moves upwards and drives the first position to rotate, the second spring also moves upwards along with the first position, when the arc clamping plate is not rotated, the clamping tooth part can be automatically clamped in the inclined tooth part under the action of the second spring, the arc clamping plate is fixed in the opening, the arc hook body forms a closed circle, and the goods unhooking phenomenon is avoided.
Description
Technical Field
The utility model relates to an unhooking prevention device for a crane.
Background
The crane refers to a multi-action hoisting machine for vertically lifting and horizontally carrying heavy objects in a certain range.
Generally, two main parts of a crane are a lifting rope and a lifting hook, the lifting rope drives the lifting hook to ascend or descend, a cargo to be lifted is hooked by the lifting hook, and then the cargo drives the lifting hook and the cargo to ascend or descend together under the action of the lifting rope.
However, the existing lifting hook lacks an anti-unhooking structure, so that the cargo can be easily unhooked due to the fact that the cargo is rocked in the ascending or descending process during the lifting operation, the cargo drops, workers are injured by crashing, and certain potential safety hazards are achieved.
SUMMERY OF THE UTILITY MODEL
The utility model mainly aims to provide an unhooking prevention device for a crane, which prevents unhooking.
In order to accomplish the above object, the present invention provides an unhooking prevention device for a crane; comprises a lifting hook and an anti-unhooking structure;
the upper end of the lifting hook is a square block, the lower end of the square block is provided with an arc-shaped hook body, an oval hole is formed in the front side of the square block, a cavity is formed in the square block, an opening is formed between the end portion of the lower end of the square block and the end portion of the upper end of the arc-shaped hook body, the lower end of the arc-shaped hook body is provided with a notch, a rotatable arc-shaped clamping plate is arranged in the notch, the lower end of the arc-shaped clamping plate is rotatably arranged in the notch, and the upper end of the arc-shaped clamping plate is provided with an oblique tooth part;
the anti-unhooking structure is arranged in the square block and comprises an L-shaped driving plate, an L-shaped clamping plate, a first spring and a second spring, wherein a first part of the L-shaped driving plate is rotatably arranged at the upper side position in the square block, a clamping notch is formed in a second part of the L-shaped driving plate, a driving column is arranged on a third part of the L-shaped driving plate, the driving column penetrates through an oval hole and is arranged outside the front side of the square block, the upper end of the first spring is connected with the upper side wall in the square block, the lower end of the first spring is connected with the first part of the L-shaped driving plate, the first position of the L-shaped clamping plate is movably arranged at the lower side position in the square block, a clamping tooth part is arranged at the lower side of the second position of the L-shaped clamping plate, and the right end of the second spring is connected with the right side wall in the square block, the left end of the second spring is connected with the second position of the L-shaped clamping plate, a clamping block is arranged at the third position of the L-shaped clamping plate, and the clamping block is arranged in the clamping groove.
The L-shaped clamping plate is fixed in the opening, the arc hook body forms a closed circle, and therefore the phenomenon of unhooking of goods is avoided.
In addition, when the goods need to be taken off from the arc hook body, the artificial drive post that upwards promotes square piece front side, it can be at the downthehole upward movement of oval, simultaneously, the third position that drives L shape drive board also can upwards remove and drive the second position upward movement, through the third position upward movement then consecutive messenger first position upwards rotates and first spring also can contract, upward movement through the second position then can make the block notch drive block upward movement, through the upward movement of block, make the third position and the second position upward movement of L shape block board, simultaneous first position also can upwards rotate, simultaneously, block tooth portion also can rise the removal, thereby keep away from the skewed tooth portion, the people is for turning left arc block board, and from the opening internal roll-out, just at this moment can take off the goods on the arc hook body.
Preferably, the upper end of the square block is provided with a hanging ring. The lifting ring is convenient to connect with the lifting rope.
One preferred scheme is that the lower end of the arc-shaped clamping plate is rotatably arranged in the gap through a fixed shaft rod, and an arc-shaped bulge is arranged in the middle of the arc-shaped clamping plate. The limiting is carried out through the arc-shaped bulge.
According to a preferable scheme, the first part of the L-shaped driving plate is rotatably arranged at the upper side position in the square block through a fixing column, an elliptical hole is formed in the first position of the L-shaped clamping plate, a connecting column is arranged in the elliptical hole, two ends of the connecting column are connected with the front side wall and the rear side wall in the square block, the end part of the first part of the L-shaped clamping plate is an inclined surface, and the lower side of the L-shaped clamping plate is arc-shaped.
Preferably, the hanging ring is connected with the upper end part of the square block through an upright post.
Drawings
The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
Fig. 1 is a schematic structural view of an anti-unhooking device for a crane according to the present invention;
FIG. 2 is a schematic structural view of a cross-sectional view of an unhooking prevention device for a crane according to the present invention;
FIG. 3 is an enlarged schematic view of region A in FIG. 1;
fig. 4 is a schematic structural view of an anti-unhooking device for a crane according to the present invention;
FIG. 5 is an enlarged schematic view of region B in FIG. 2;
fig. 6 is a schematic structural view of a partial direction block of a unhooking prevention device for a crane according to the present invention in a plan view.
Detailed Description
The technical solution in the embodiments of the present invention is clearly and completely described below with reference to the drawings in the embodiments of the present invention. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention, but the present invention may be practiced in other ways than those specifically described and will be readily apparent to those of ordinary skill in the art without departing from the spirit of the present invention, and therefore the present invention is not limited to the specific embodiments disclosed below.
As shown in fig. 1 to 6, the present invention provides an unhooking prevention apparatus for a crane; comprises a lifting hook 10 and an anti-unhooking structure 60;
the upper end of the lifting hook 10 is a square block 20, the lower end of the square block 20 is provided with an arc-shaped hook body 30, an oval hole 21 is formed in the front side of the square block 20, a cavity is formed in the square block 20, an opening 22 is formed between the lower end of the square block 20 and the upper end of the arc-shaped hook body 30, the lower end of the arc-shaped hook body 30 is provided with a notch 31, a rotatable arc-shaped clamping plate 32 is arranged in the notch 31, the lower end of the arc-shaped clamping plate 32 is rotatably arranged in the notch 31, and the upper end of the arc-shaped clamping plate 32 is provided with an oblique tooth part 33;
the unhooking prevention structure 60 is arranged in the square block 20, the unhooking prevention structure 60 comprises an L-shaped driving plate 61, an L-shaped clamping plate 62, a first spring 63 and a second spring 64, a first part 71 of the L-shaped driving plate 61 is rotatably arranged at the upper side position in the square block 20, a second part 72 of the L-shaped driving plate 62 is provided with a clamping notch 73, a third part 74 of the L-shaped driving plate 61 is provided with a driving column 75, the driving column 75 is movably arranged outside the front side of the square block 20 through an elliptical hole 21, the upper end of the first spring 63 is connected with the upper side wall in the square block 20, the lower end of the first spring 63 is connected with the first part 71 of the L-shaped driving plate 61, the first position 81 of the L-shaped clamping plate 62 is arranged at the lower side position in the square block 20, a clamping tooth part 83 is arranged at the lower side of a second position 82 of the L-shaped plate 62, the right end of the second spring 64 is connected with the right side wall in the square block 20, the left end of the second spring 64 is connected with the second position 82 of the L-shaped clamping plate 62, a clamping block 86 is arranged on the third position 85 of the L-shaped clamping plate 62, and the clamping block 86 is arranged in the clamping groove opening 73.
The operation process is that firstly the goods to be lifted are hooked by the lower end of the arc hook body 30, then the arc engaging plate 32 is manually rotated, the arc engaging plate 32 is rotated from the left side to the right side of the opening 22, when the upper end of the arc engaging plate 22 enters the opening 22, the engaging tooth portion 83 contacts with the inclined tooth portion 33, at the same time, the second position 84 of the L-shaped engaging plate 62 is moved upwards to drive the first position 81 to rotate, and the second spring 64 is moved upwards, when the arc engaging plate 32 is not rotated, the engaging tooth portion 83 can be automatically engaged in the inclined tooth portion 33 by the action of the second spring 64, and then the arc engaging plate 32 is fixed in the opening 22, at this time, the arc hook body 30 forms a closed circle, and the phenomenon of unhooking of the goods is avoided.
In addition, when the goods need to be taken off from the arc hook 30, the driving post 75 at the front side of the square block 20 is manually pushed upwards, the driving post 75 moves upwards in the oval hole 21, meanwhile, the third portion 74 of the L-shaped driving plate 61 also moves upwards and drives the second portion 72 to move upwards, the first portion 71 rotates upwards sequentially by the upward movement of the third portion 74, the first spring 63 also contracts, the engaging notch 73 drives the engaging block 86 to move upwards by the upward movement of the second portion 72, the third portion 85 and the second portion 84 of the L-shaped engaging plate 62 move upwards by the upward movement of the engaging block 86, the first portion 81 also rotates upwards along with the upward movement, the engaging tooth portion 83 also moves upwards, so as to be far away from the inclined tooth portion 33, the arc engaging plate 32 is manually rotated to the left and rotated out from the opening 22, the goods on the curved hook body 30 can be taken down.
Preferably, the upper end of the square block 20 is provided with a hanging ring 101. The connection with the lifting rope is facilitated through the arrangement of the lifting ring 101.
Preferably, the lower end of the arc-shaped engaging plate 32 is rotatably disposed in the notch 31 through a fixed shaft 102, and an arc-shaped protrusion 103 is disposed at the middle position of the arc-shaped engaging plate 32.
When the arc-shaped clamping plate 32 rotates towards the opening 22, the maximum position can only rotate to the position of the arc-shaped protrusion 103, so that the limiting effect is achieved.
Preferably, the first portion 71 of the L-shaped driving plate 61 is rotatably disposed at an upper side position in the square block 20 through a fixing column 105, an elliptical hole 121 is disposed at the first position 81 of the L-shaped engaging plate 62, a connecting column 122 is disposed in the elliptical hole 121, two ends 122 of the connecting column are connected with a front side wall and a rear side wall in the square block 20, an end portion of the first position 81 of the L-shaped engaging plate 62 is an inclined surface 131, and a lower side of the L-shaped engaging plate 131 is an arc 132.
The first position 81 is facilitated to rotate by the inclined surface 131 at the end of the first position 81.
Preferably, the hanging ring 101 is connected with the upper end of the square block 20 through the upright post 161.
In addition, when the arc hook body hooks goods, the arc clamping plate can automatically rotate towards the lower end of the arc hook body due to gravity.
In addition, the elliptical hole 121 may be a common circular hole, the circular hole is sleeved on the connecting post 122, and the L-shaped engaging plate 62 rotates around the connecting post 122 to realize engaging or disengaging actions.
It is to be understood that the described embodiments are merely a few embodiments of the utility model, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Claims (5)
1. An unhooking prevention device for a crane, comprising:
the lifting hook comprises a lifting hook, wherein the upper end of the lifting hook is a square block, the lower end of the square block is provided with an arc-shaped hook body, an oval hole is formed in the front side of the square block, a cavity is formed in the square block, an opening is formed between the lower end part of the square block and the upper end part of the arc-shaped hook body, the lower end of the arc-shaped hook body is provided with a notch, a rotatable arc-shaped clamping plate is arranged in the notch, the lower end of the arc-shaped clamping plate is rotatably arranged in the notch, and the upper end of the arc-shaped clamping plate is provided with an oblique tooth part;
the anti-unhooking structure is arranged in the square block and comprises an L-shaped driving plate, an L-shaped clamping plate, a first spring and a second spring, wherein a first part of the L-shaped driving plate is rotatably arranged at the upper side position in the square block, a clamping notch is formed in a second part of the L-shaped driving plate, a driving column is arranged at a third part of the L-shaped driving plate and penetrates through an oval hole to be arranged outside the front side of the square block, the upper end of the first spring is connected with the upper side wall in the square block, the lower end of the first spring is connected with the first part of the L-shaped driving plate, the first position of the L-shaped clamping plate is movably arranged at the lower side position in the square block, a clamping tooth part is arranged below the second position of the L-shaped clamping plate, and the right end of the second spring is connected with the right side wall in the square block, the left end of the second spring is connected with the second position of the L-shaped clamping plate, a clamping block is arranged at the third position of the L-shaped clamping plate, and the clamping block is arranged in the clamping groove.
2. The unhooking prevention device for the crane according to claim 1, wherein a hanging ring is provided at an upper end of the square block.
3. The unhooking prevention device for the crane according to claim 1, wherein the lower end of the arc-shaped clamping plate is rotatably arranged in the notch through a fixed shaft rod, and an arc-shaped protrusion is arranged in the middle of the arc-shaped clamping plate.
4. The unhooking prevention device for the crane according to claim 1, wherein the first portion of the L-shaped driving plate is rotatably provided at an upper position in the square block by a fixing column, the first position of the L-shaped engaging plate is provided with an elliptical hole, a connecting column is provided in the elliptical hole, both ends of the connecting column are connected to a front side wall and a rear side wall in the square block, an end portion of the first portion of the L-shaped engaging plate is an inclined surface, and a lower side of the L-shaped engaging plate is arc-shaped.
5. The unhooking prevention device for a crane according to claim 2, wherein the lifting ring is connected to the upper end of the square block by a post.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220116130.1U CN216613737U (en) | 2022-01-17 | 2022-01-17 | Unhooking prevention device for crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202220116130.1U CN216613737U (en) | 2022-01-17 | 2022-01-17 | Unhooking prevention device for crane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN216613737U true CN216613737U (en) | 2022-05-27 |
Family
ID=81689886
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202220116130.1U Expired - Fee Related CN216613737U (en) | 2022-01-17 | 2022-01-17 | Unhooking prevention device for crane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN216613737U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116730178A (en) * | 2023-07-04 | 2023-09-12 | 义乌市鼎佳建筑工程有限公司 | Tower crane hook |
-
2022
- 2022-01-17 CN CN202220116130.1U patent/CN216613737U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116730178A (en) * | 2023-07-04 | 2023-09-12 | 义乌市鼎佳建筑工程有限公司 | Tower crane hook |
| CN116730178B (en) * | 2023-07-04 | 2024-01-05 | 义乌市鼎佳建筑工程有限公司 | Tower crane hook |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20220527 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |