CN116062603A

CN116062603A - Lifting hook and crane

Info

Publication number: CN116062603A
Application number: CN202310204851.7A
Authority: CN
Inventors: 龙绍章; 蒋林峰; 刘汉超; 章仁彬; 赖秋玲; 李忠昭
Original assignee: China Huashi Enterprises Co Ltd
Current assignee: China Huashi Enterprises Co Ltd
Priority date: 2023-03-06
Filing date: 2023-03-06
Publication date: 2023-05-05

Abstract

The invention belongs to the technical field of lifting equipment, and discloses a lifting hook and a crane. The closure assembly includes a closure, a torsion spring, a locking structure, and an unlocking trigger structure. One end of the sealing piece is rotatably connected to the connecting part, and the other end of the sealing piece can be abutted against the hook head. The torsion spring is connected with the sealing piece and the lifting hook body. The sealing piece is provided with a containing cavity, the containing cavity penetrates through one end of the sealing piece, and the locking structure is arranged in the containing cavity. The unlocking triggering structure comprises a limiting piece, and the position of the limiting piece is adjustably arranged in the accommodating cavity. When the other end of the sealing piece is propped against the hook head, the locking structure is supported between the connecting part and the limiting piece which are oppositely arranged, so that the sealing piece is prevented from rotating relative to the connecting part, the opening is tightly sealed, the safety is good, and a weight hung on the lifting hook body is not easy to break away from the opening.

Description

Lifting hook and crane

Technical Field

The invention relates to the technical field of lifting equipment, in particular to a lifting hook and a crane.

Background

In engineering construction, hooks are often used to hoist weights up or transfer them elsewhere. The patent document with the publication number CN 102659022B discloses a lifting hook and a crane with the lifting hook, the lifting hook comprises a lifting hook body, a baffle mounting seat, a baffle, a pin shaft and a first torsion spring, wherein the baffle mounting seat is positioned on one side of an opening of the lifting hook body, one end of the baffle is pivoted with the baffle mounting seat through the pin shaft, the first torsion spring is arranged on the pin shaft, the other end of the baffle is propped against the lifting hook body under the action of the tensioning force of the first torsion spring, the opening of the lifting hook body is closed by the baffle, when the baffle is pushed towards the inner side direction of the opening, the opening is opened, and when the baffle is not pushed any more, the other end of the baffle is propped against the lifting hook body again under the driving of the first torsion spring to close the opening.

However, the opening is closed only by means of the tension force of the torsion spring, so that the closing safety is poor, because the tension force of the torsion spring is weakened after the torsion spring is used for a period of time, the baffle plate at the opening is easy to shake, the opening is not tightly closed, and the hung weight is separated from the lifting hook.

Disclosure of Invention

The invention aims to provide a lifting hook and a crane, wherein the opening of the lifting hook is tightly closed, and the unhooking of a heavy object is avoided.

To achieve the purpose, the invention adopts the following technical scheme:

a hook, comprising:

the lifting hook comprises a lifting hook body, wherein an opening is formed in the lifting hook body, one side edge of the opening is a connecting part of the lifting hook body, and the other side edge of the opening is a hook head of the lifting hook body;

the sealing assembly comprises a sealing piece, a torsion spring, a locking structure and an unlocking triggering structure, wherein one end of the sealing piece is rotationally connected to the connecting part, the other end of the sealing piece can be propped against the hook head, the torsion spring is connected with the sealing piece and the lifting hook body, the sealing piece is provided with a containing cavity, the containing cavity penetrates through one end of the sealing piece, the locking structure is arranged in the containing cavity, the unlocking triggering structure comprises a limiting piece, and the position of the limiting piece is adjustably arranged in the containing cavity;

when the other end of the sealing piece is propped against the hook head, the locking structure is supported between the connecting part and the limiting piece which are oppositely arranged.

Optionally, the locking structure includes a locking rod and a linkage rod that are connected to each other, the locking rod is slidably connected to the sealing member, one end of the locking rod abuts against the connecting portion, and the limiting member can selectively support the linkage rod.

Optionally, the connecting portion has an abutment surface, the locking lever abuts against the abutment surface, and when the sealing member rotates to be spaced from the hook head, an acute angle formed between the locking lever and the abutment surface is gradually reduced.

Optionally, when the sealing member rotates to be spaced from the hook head, the connecting portion pushes the locking rod to move in a direction away from the connecting portion.

Optionally, the locking structure further includes a first elastic member, where the first elastic member connects the locking rod and the sealing member, and when the sealing member rotates to abut against the hook head, the first elastic member drives the locking rod to move toward the connecting portion.

Optionally, the unlocking trigger structure further comprises a button, the sealing piece is provided with a mounting hole communicated with the accommodating cavity, the button movably penetrates through the mounting hole, one end of the button is connected with the limiting piece, when the button is located at the first position, the limiting piece supports the locking structure, and when the button is located at the second position, the limiting piece avoids the locking structure.

Optionally, the unlocking triggering structure further comprises a second elastic piece, wherein the second elastic piece is connected with the sealing piece and the button and can drive the button to move from the second position to the first position.

Optionally, the sealing member is provided with an avoidance hole communicated with the accommodating cavity, when the button is at the first position, the limiting member is positioned in the accommodating cavity, and when the button moves from the first position to the second position, the limiting member is driven to extend out of the accommodating cavity through the avoidance hole.

Optionally, a notch is formed at the other end of the sealing piece, and the notch is matched with the shape of the hook head.

The crane comprises the lifting hook.

The invention has the beneficial effects that:

the lifting hook comprises a lifting hook body and a sealing assembly. One end of the sealing piece is rotatably connected to the connecting part of the lifting hook body, and when the other end of the sealing piece abuts against the hook head of the lifting hook body, the opening on the lifting hook body is closed by the sealing piece, on one hand, the torsion spring enables the sealing piece to be difficult to rotate and avoid the opening to be opened, on the other hand, a locking structure and a limiting piece are arranged in a containing cavity of the sealing piece, the locking structure is supported between the connecting part and the limiting piece which are oppositely arranged, and accordingly the sealing piece is prevented from rotating relative to the connecting part, the opening is tightly closed, the safety is good, the opening can be effectively closed even if the torsion spring fails, and a weight hung on the lifting hook body is difficult to be separated from the opening.

The crane provided by the invention comprises the lifting hook, the opening is tightly sealed through the matching of the lifting hook body and the sealing assembly, the safety is good, the sealing piece can effectively seal the opening even if the torsion spring fails, and the weight hung on the lifting hook body is not easy to break away from the opening.

Drawings

FIG. 1 is a schematic view of a hook according to an embodiment of the present invention when an opening is closed;

FIG. 2 is an enlarged view of a portion of FIG. 1 at A;

FIG. 3 is a schematic view of a closure assembly provided in an embodiment of the present invention;

fig. 4 is a schematic connection diagram of an unlocking trigger structure and a sealing member according to an embodiment of the present invention;

FIG. 5 is a schematic view of a hook according to an embodiment of the present invention with an opening open;

fig. 6 is a partial enlarged view at B in fig. 5.

In the figure:

1. a hook body; 11. an opening; 12. a connection part; 13. a hook head;

2. a seal assembly;

21. a sealing member; 211. a receiving chamber; 212. a mounting hole; 213. avoidance holes; 214. a notch; 215. a first guide plate; 216. a second guide plate;

22. a torsion spring;

23. a locking structure; 231. a locking lever; 232. a linkage rod; 233. a first connection plate; 234. a first elastic member;

24. unlocking the trigger structure; 241. a button; 242. a limiting piece; 243. a second connecting plate; 244. and a second elastic member.

Detailed Description

Embodiments of the present invention are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar parts throughout, or parts having like or similar functions. The embodiments described below by referring to the drawings are illustrative and intended to explain the present invention and should not be construed as limiting the invention.

In the description of the present invention, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be interpreted broadly, as for example, they may be fixedly connected, or may be detachably connected, or may be electrically connected, or may be directly connected, or may be indirectly connected through an intermediary, or may be in communication with one another in two elements or in an interaction relationship between two elements. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.

In the description of the present invention, unless explicitly stated and limited otherwise, a first feature "above" or "below" a second feature may include the first feature and the second feature being in direct contact, or may include the first feature and the second feature not being in direct contact but being in contact by another feature therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

The technical scheme of the invention is further described below by the specific embodiments with reference to the accompanying drawings.

As shown in fig. 1-3, the present embodiment provides a hook for hanging a weight to shift its position. The structure of the lifting hook comprises a lifting hook body 1 and a sealing assembly 2, wherein an opening 11 is formed in the lifting hook body 1, one side edge of the opening 11 is a connecting portion 12 of the lifting hook body 1, the other side edge of the opening is a hook head 13 of the lifting hook body 1, and a heavy object is hung or taken down through the opening 11. The closure assembly 2 comprises a closure 21, a torsion spring 22, a locking structure 23 and an unlocking trigger structure 24, one end of the closure 21 is rotatably connected to the connecting portion 12, and the other end can abut against the hook head 13, thereby closing or opening the opening 11. The torsion spring 22 connects the closure 21 and the hook body 1. The sealing piece 21 is provided with a containing cavity 211, the containing cavity 211 penetrates through one end of the sealing piece 21, the locking structure 23 is arranged in the containing cavity 211, the unlocking triggering structure 24 comprises a limiting piece 242, and the limiting piece 242 is arranged in the containing cavity 211 in a position-adjustable mode. When the other end of the sealing member 21 abuts against the hook 13, the locking structure 23 is supported between the connecting portion 12 and the stopper 242 which are disposed opposite to each other.

When one end of the sealing piece 21 is rotatably connected to the connecting part 12 of the lifting hook body 1, and the other end of the sealing piece abuts against the hook head 13 of the lifting hook body 1, the sealing piece 21 seals the opening 11 on the lifting hook body 1, on one hand, the torsion spring 22 enables the sealing piece 21 not to rotate easily, the opening 11 is prevented from being opened, on the other hand, the locking structure 23 and the limiting piece 242 are arranged in the accommodating cavity 211 of the sealing piece 21, and the locking structure 23 is supported between the connecting part 12 and the limiting piece 242 which are oppositely arranged, so that the sealing piece 21 is prevented from rotating relative to the connecting part 12, the opening 11 is tightly sealed, the safety is good, the sealing piece 21 can effectively seal the opening 11 even if the torsion spring 22 fails, and a weight hung on the lifting hook body 1 is not easy to be separated from the opening 11.

In this embodiment, the sealing member 21 is in a hollow plate shape, the connecting portion 12 of the hook body 1 is in an ear plate shape, the sealing member 21 and the connecting portion 12 are pivoted by a bolt, and the torsion spring 22 is sleeved on the bolt.

Further, the other end of the sealing piece 21 is provided with a notch 214, and the notch 214 is matched with the shape of the hook head 13, so that the other end of the sealing piece 21 is tightly connected with the hook head 13 when being abutted against the hook head 13, is not easy to shake, and enhances the tightness of the opening 11.

Further, as shown in fig. 3, the locking structure 23 includes a locking rod 231 and a linkage rod 232 that are connected to each other, the locking rod 231 is slidably connected to the sealing member 21, one end of the locking rod 231 abuts against the connecting portion 12, the limiting member 242 selectively supports the linkage rod 232, when the limiting member 242 supports the linkage rod 232, the locking structure 23 is supported between the connecting portion 12 and the limiting member 242 to interfere with the rotation of the sealing member 21, and when the limiting member 242 does not support the linkage rod 232, the locking structure 23 no longer interferes with the rotation of the sealing member 21. Specifically, the inner wall of the sealing member 21 is provided with a first guide plate 215, the first guide plate 215 is provided with a first guide hole, and the locking rod 231 penetrates through the first guide hole, can slide along the axial direction of the first guide hole, and drives the linkage rod 232 to move synchronously. In this embodiment, the locking rod 231 and the linkage rod 232 are disposed in parallel, and the linkage rod 232 is perpendicular to the plate-shaped limiting member 242, so that the end of the locking rod 231 abuts against the connecting portion 12, and when the end of the linkage rod 232 abuts against the limiting member 242, the abutment is tight, and the linkage rod is not easy to separate. Illustratively, the first guide plate 215 is provided with two such that the locking lever 231 moves smoothly.

Further, the locking structure 23 further includes a first connecting plate 233, and an end of the locking lever 231 remote from the connecting portion 12 is connected to the link lever 232 through the first connecting plate 233. In this embodiment, a through hole is provided on the first connecting plate 233, the linkage rod 232 passes through the through hole, two nuts are sleeved on the linkage rod 232, and the two nuts are respectively attached to two sides of the first connecting plate 233 to lock the position of the linkage rod 232. The position in which the nut is locked on the linkage rod 232 may be selected according to different sizes of closure members 21.

Further, as shown in fig. 1, 2, 5 and 6, the connecting portion 12 has an abutment surface against which the locking lever 231 abuts, and when the sealing member 21 is rotated to be spaced from the hook head 13, an acute angle formed between the locking lever 231 and the abutment surface gradually decreases, so that when the sealing member 21 is rotated to be spaced from the hook head 13, the connecting portion 12 abuts against the locking lever 231 to move in a direction away from the connecting portion 12.

Further, the locking structure 23 further includes a first elastic member 234, where the first elastic member 234 connects the locking lever 231 and the sealing member 21, and when the sealing member 21 rotates to abut against the hook 13, the first elastic member 234 drives the locking lever 231 to move toward the connecting portion 12, so as to keep the locking lever 231 always abutting against the connecting portion 12. In this embodiment, the first elastic member 234 includes a spring, the first elastic member 234 connects the locking lever 231 and the first guide plate 215, when the sealing member 21 abuts against the hook 13, the first elastic member 234 is in a relaxed state, and when the sealing member 21 is spaced from the hook 13, the first elastic member 234 is in a compressed state, so that when the sealing member 21 rotates to abut against the hook 13, the locking lever 231 is driven to move under the action of the first elastic member 234.

Further, as shown in fig. 3 and 4, the unlocking trigger structure 24 further includes a button 241, the sealing member 21 is provided with a mounting hole 212 communicated with the accommodating cavity 211, the button 241 movably penetrates through the mounting hole 212, one end of the button 241 is connected to a limiting member 242, when the button 241 is in the first position, the limiting member 242 supports the linkage rod 232, and when the button 241 is in the second position, the limiting member 242 avoids the linkage rod 232 and no longer supports the linkage rod 232. Specifically, the unlocking triggering structure 24 further includes a second connecting plate 243, and one end of the button 241 is connected to the limiting member 242 through the second connecting plate 243.

Further, the sealing member 21 is provided with a avoiding hole 213 communicated with the accommodating cavity 211, when the button 241 is at the first position, the limiting member 242 is located in the accommodating cavity 211, and when the button 241 moves from the first position to the second position, the limiting member 242 is driven to extend out of the accommodating cavity 211 through the avoiding hole 213, so that the linkage rod 232 is not supported any more. In this embodiment, the button 241 includes a stem portion and a head portion, the stem portion passes through the mounting hole 212 and is connected to the limiting member 242, the stem portion is parallel to the plate-shaped plate surface of the limiting member 242, the axial direction of the avoidance hole 213 is parallel to the plate surface of the limiting member 242, the head portion is located outside the sealing member 21, and when the head portion of the button 241 moves toward the sealing member 21, the button 241 can be moved from the first position to the second position.

Further, the inner wall of the sealing member 21 is provided with a second guide plate 216, the second guide plate 216 is provided with a second guide hole and a third guide hole, the rod part is provided with the second guide hole in a penetrating manner, the limiting piece 242 is provided with the third guide hole in a penetrating manner, and the second connecting plate 243 and the head part of the button 241 are arranged on two sides of the second guide plate 216, so that the button 241 and the limiting piece 242 move stably.

Further, the unlocking trigger structure 24 further includes a second elastic member 244, and the second elastic member 244 connects the sealing member 21 and the button 241, and can drive the button 241 to move from the second position to the first position. In this embodiment, the second elastic member 244 includes a spring, and the second elastic member 244 connects the button 241 and the second guide plate 216, when the button 241 is in the first position, the second elastic member 244 is in the relaxed state, and when the button 241 is in the second position, the second elastic member 244 is in the compressed state, so that the button 241 can be moved from the second position to the first position under the action of the second elastic member 244.

The use process and effect of the lifting hook provided in this embodiment are approximately as follows:

first, when the sealing member 21 abuts against the hook head 13, the torsion spring 22 is in a relaxed state, the button 241 is located at the first position, the limiting member 242 supports the linkage rod 232, the locking rod 231 abuts against the connecting portion 12 of the hook body 1, and the sealing member 21 is locked on the connecting portion 12, so that the sealing member 21 is prevented from rotating, and the opening 11 of the hook body 1 is tightly sealed and has good safety.

Then, when the opening 11 needs to be opened, the manual pressing button 241 moves from the first position to the second position, and simultaneously, the sealing member 21 is rotated to enable the sealing member 21 to be arranged at intervals with the hook head 13 of the hook body 1, when the button 241 moves from the first position to the second position, the second elastic member 244 is compressed, the limiting member 242 extends out of the avoidance hole 213 and no longer supports the linkage rod 232, and when the sealing member 21 rotates to be arranged at intervals with the hook head 13, the torsion spring 22 contracts, the connecting portion 12 of the hook body 1 pushes the locking rod 231 to drive the linkage rod 232 to move in a direction deviating from the connecting portion 12, and the first elastic member 234 is compressed.

Finally, when the opening 11 needs to be closed, no pressure is applied to the button 241 and the sealing piece 21, the sealing piece 21 gradually rotates to abut against the hook head 13 of the hook body 1 under the driving of the torsion spring 22, and the locking rod 231 drives the linkage rod 232 to move towards the connecting part 12 under the driving of the first elastic piece 234, so that the locking rod 231 abuts against the connecting part 12 of the hook body 1; the button 241 is moved from the second position to the first position by the second elastic member 244, and the limiting member 242 also extends into the accommodating cavity 211 to continuously support the linkage rod 232. Preferably, the closure 21 is released first and then the button 241 is released to avoid collision of the stopper 242 and the link 232.

This embodiment still provides a hoist, including foretell lifting hook, through the cooperation of lifting hook body 1 and seal assembly 2 for opening 11 seals tightly, and the security is good, even torsion spring 22 inefficacy, and sealing member 21 also can effectively seal opening 11, and the heavy object of hanging on lifting hook body 1 is difficult for deviating from opening 11.

The lifting hook and the crane provided by the embodiment can tightly and safely close the opening 11 of the lifting hook body 1 by the sealing assembly 2, avoid unhooking of a hung weight, and can open the opening 11 only by human intervention, so that the safety is enhanced, and the operation is simple and quick when the opening 11 is opened and closed again, and the time and the labor are saved.

It is to be understood that the above examples of the present invention are provided for clarity of illustration only and are not limiting of the embodiments of the present invention. Other variations or modifications of the above teachings will be apparent to those of ordinary skill in the art. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the invention are desired to be protected by the following claims.

Claims

1. The lifting hook, its characterized in that includes:

the lifting hook comprises a lifting hook body (1), wherein an opening (11) is formed in the lifting hook body (1), one side edge of the opening (11) is a connecting part (12) of the lifting hook body (1), and the other side edge is a hook head (13) of the lifting hook body (1);

the sealing assembly (2) comprises a sealing piece (21), a torsion spring (22), a locking structure (23) and an unlocking triggering structure (24), wherein one end of the sealing piece (21) is rotatably connected to the connecting part (12), the other end of the sealing piece can be abutted to the hook head (13), the torsion spring (22) is connected with the sealing piece (21) and the lifting hook body (1), the sealing piece (21) is provided with a containing cavity (211), the containing cavity (211) penetrates through one end of the sealing piece (21), the locking structure (23) is arranged in the containing cavity (211), the unlocking triggering structure (24) comprises a limiting piece (242), and the position of the limiting piece (242) is adjustably arranged in the containing cavity (211);

when the other end of the sealing piece (21) is abutted against the hook head (13), the locking structure (23) is supported between the connecting part (12) and the limiting piece (242) which are oppositely arranged.

2. The lifting hook according to claim 1, characterized in that the locking structure (23) comprises a locking bar (231) and a linkage bar (232) connected to each other, the locking bar (231) being slidably connected to the closure member (21), one end of the locking bar (231) being abutted against the connecting portion (12), the limiting member (242) being selectively supportable by the linkage bar (232).

3. A lifting hook as claimed in claim 2, wherein the connecting portion (12) has an abutment surface against which the locking lever (231) abuts, the acute angle between the locking lever (231) and the abutment surface being progressively reduced as the closure member (21) is rotated to a spaced arrangement from the hook head (13).

4. A lifting hook according to claim 3, characterized in that the connecting part (12) moves against the locking lever (231) in a direction away from the connecting part (12) when the closure member (21) is turned to be spaced from the hook head (13).

5. A lifting hook according to claim 3, wherein the locking structure (23) further comprises a first resilient member (234), the first resilient member (234) connecting the locking lever (231) and the closure member (21), the closure member (21) being rotated against the hook head (13), the first resilient member (234) driving the locking lever (231) towards the connecting portion (12).

6. The lifting hook according to claim 1, wherein the unlocking triggering structure (24) further comprises a button (241), the sealing piece (21) is provided with a mounting hole (212) communicated with the accommodating cavity (211), the button (241) movably penetrates through the mounting hole (212), one end of the button is connected with the limiting piece (242), when the button (241) is in a first position, the limiting piece (242) supports the locking structure (23), and when the button (241) is in a second position, the limiting piece (242) avoids the locking structure (23).

7. The hook of claim 6, wherein the unlocking trigger mechanism (24) further comprises a second resilient member (244), the second resilient member (244) connecting the closure member (21) and the button (241) and being capable of driving the button (241) from the second position to the first position.

8. The lifting hook according to claim 6, wherein the sealing member (21) is provided with a avoidance hole (213) communicated with the accommodating cavity (211), the limiting member (242) is located in the accommodating cavity (211) when the button (241) is located at the first position, and the limiting member (242) is driven to extend out of the accommodating cavity (211) through the avoidance hole (213) when the button (241) moves from the first position to the second position.

9. A lifting hook as claimed in claim 1, characterized in that the other end of the closure (21) is provided with a notch (214), the notch (214) being adapted to the shape of the hook head (13).

10. Crane, characterized by comprising a hook according to any of claims 1-9.