CN211998463U

CN211998463U - Anti-drop device for lifting hook

Info

Publication number: CN211998463U
Application number: CN202020221489.6U
Authority: CN
Inventors: 马伟江; 刘建军; 马伟敬; 张小帅
Original assignee: Xingtai Road & Bridge Construction General Co ltd
Current assignee: Xingtai road and Bridge Construction Group Co.,Ltd.
Priority date: 2020-02-27
Filing date: 2020-02-27
Publication date: 2020-11-24
Anticipated expiration: 2030-02-27

Abstract

The utility model provides a hook anti-drop device, belonging to the technical field of hoisting equipment, comprising a hook body, a support rod and a self-locking piece, wherein the hook body comprises a connecting part and a hook integrally connected with the connecting part; the supporting rod is connected to one side, facing the hook, of the connecting part of the hook body, and the supporting rod is perpendicular to the plane where the hook is located; the self-locking piece comprises a first frame and a second frame which is connected with the first frame in an acute angle, and the connecting corner of the first frame and the second frame is rotatably connected with the supporting rod, or the supporting rod is rotatably connected with the lifting hook body, so that the self-locking piece has a rotational degree of freedom relative to the lifting hook body; after the self-locking piece is connected with the supporting rod, the first frame stops at the opening of the hook by means of dead weight, and the second frame supports on the outer side face, far away from the opening, of the hook. The utility model provides a lifting hook anticreep device, simple structure, the preparation is easy, utilizes the dead weight of self to realize the auto-lock, and is not fragile, has also reduced the cost of manpower maintenance.

Description

Anti-drop device for lifting hook

Technical Field

The utility model belongs to the technical field of hoisting equipment, more specifically say, relate to a lifting hook anticreep device.

Background

The lifting hook is a key part on the crane, is mainly used for realizing the operations of loading, unloading, hoisting, installing and the like of articles, and is generally provided with an anti-unhooking device in order to prevent unnecessary damage and personal injury caused by unhooking of a hanging tool in the lifting hook. The existing hook unhooking prevention device is usually composed of a spring, a baffle, a pin shaft and the like, the locking state of the hook is maintained mainly by the restoring force action of the spring, the unhooking prevention device is easy to lose efficacy due to fatigue of the spring and needs to be replaced frequently, the potential safety hazard is increased, the manpower and material cost is increased, and the operation cost is also increased for enterprises.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a lifting hook anticreep device, aim at solving the problem that current mousing-hook device became invalid and damages frequently, need increase manpower and material resources and change.

In order to achieve the above object, the utility model adopts the following technical scheme: provided is a hook drop-off prevention device, including: the lifting hook comprises a lifting hook body, a supporting rod and a self-locking piece, wherein the lifting hook body comprises a connecting part and a hook integrally connected with the connecting part; the supporting rod is connected to one side, facing the hook, of the connecting part of the hook body, and the supporting rod is perpendicular to a plane where the hook is located; the self-locking piece comprises a first frame and a second frame which is connected with the first frame in an acute angle, and the connecting corner of the first frame and the second frame is rotatably connected with the supporting rod, so that the self-locking piece has a rotational degree of freedom relative to the hook body; or the supporting rod is rotatably connected with the lifting hook body, so that the self-locking piece has a rotational degree of freedom relative to the lifting hook body; from the latch fitting with the bracing piece is connected the back, relies on the dead weight, first frame backstop is in the opening part of crotch, the second frame supports the lateral surface that its opening part was kept away from to the crotch.

As another embodiment of this application, connecting portion orientation one side of crotch is equipped with the bellying, be equipped with on the bellying and be used for the through-hole that the bracing piece passed, the bracing piece with the through-hole with the lifting hook body forms to rotate and is connected.

As another embodiment of this application, the bracing piece is the component of round steel preparation, the cover is equipped with the sleeve on the bracing piece, the sleeve with the bracing piece rotates to be connected, be equipped with on the bracing piece and be used for preventing the anti-disengaging limit structure that the sleeve drops, from the locking part fix on the sleeve.

As another embodiment of this application, anticreep limit structure for with bracing piece threaded connection's nut or wear to locate the spacer pin of bracing piece.

As another embodiment of this application, telescopic both ends are equipped with the recess, from the locking piece support with in the recess, just be in the position of recess is equipped with and is used for preventing from the anti-skidding limit structure of locking piece roll-off.

As another embodiment of this application, antiskid limit structure include with one side of recess is rotated the separation blade of connecting and is equipped with the reference column of recess opposite side, the tip of separation blade is equipped with the card and is gone into the bayonet socket of reference column rotates the separation blade makes the separation blade shelters from the higher authority of recess, locking the auto-lock spare.

As another embodiment of this application, the sleeve is the components of a whole that can function independently structure, includes that two sections parts are located the short sleeve pipe at bracing piece both ends, short sleeve pipe's both ends are equipped with respectively anti-disengaging limit structure, the self-locking piece is connected two on the short sleeve pipe.

As another embodiment of this application, the component that self-locking spare was formed for adopting a round steel to bend, its to the interface be in on the second frame, and to the interface, be equipped with the thread bush that is used for connecting.

As another embodiment of the present application, a section of the first frame supported on the inner wall of the hook is provided with a wear-resistant sleeve.

As another embodiment of the present application, the first frame and the second frame are both rectangular frame structures.

The utility model provides a lifting hook anticreep device's beneficial effect lies in: compared with the prior art, the utility model discloses lifting hook anticreep device rotates the auto-lock spare of being connected through setting up and lifting hook to be connected the back with the bracing piece from the auto-lock spare through being the acute angle, rely on the dead weight, first frame backstop is at the opening part of crotch, the lateral surface of its opening part is kept away from at the crotch to the second frame support, realize the auto-lock to the lifting hook body, when hoist and mount thing is taken off to needs, only need the upwards rotation second frame, then the second frame drives first frame downwardly rotation, the opening of crotch can be dodged to first frame, take off hoist and mount thing. The utility model provides an mousing-hook device, simple structure, the preparation is easy, does not need accurate preparation, does not need the elasticity of spring, but utilizes the dead weight of self to realize the auto-lock, and is not fragile, and very suitable hoisting equipment operational environment is abominable, hoist thick mad mode, has avoided the potential safety hazard that this kind of vulnerable part of spring often damages and causes, has also reduced the cost of manpower maintenance.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

Fig. 1 is a schematic structural view illustrating an installation of a hook anti-drop device according to an embodiment of the present invention;

FIG. 2 is a schematic side view of the hook anti-drop device of FIG. 1;

fig. 3 is a first structural schematic view of the hook anti-falling device provided in fig. 2;

FIG. 4 is a second schematic structural view of the hook anti-release device shown in FIG. 2;

fig. 5 is a third schematic structural view of the hook anti-drop device shown in fig. 2.

In the figure: 1. a connecting portion; 2. a second frame; 3. hooking; 4. a first frame; 5. a support bar; 6. a sleeve; 7. a nut; 8. a boss portion; 9. a short sleeve; 10. and (4) a threaded sleeve.

Detailed Description

In order to make the technical problem, technical solution and advantageous effects to be solved by the present invention more clearly understood, the following description is given in conjunction with the accompanying drawings and embodiments to illustrate the present invention in further detail. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

Referring to fig. 1 to 5, the hook anti-releasing device of the present invention will now be described. The lifting hook anti-falling device comprises a lifting hook body, a support rod 5 and a self-locking piece, wherein the lifting hook body comprises a connecting part 1 and a hook 3 integrally connected with the connecting part 1; the support rod 5 is connected to one side, facing the hook 3, of the connecting part 1 of the hook body, and the support rod 5 is perpendicular to the plane where the hook 3 is located; the self-locking piece comprises a first frame 4 and a second frame 2 connected with the first frame 4 at an acute angle, and the connecting corner of the first frame 4 and the second frame 2 is rotatably connected with the supporting rod 5, so that the self-locking piece has a rotational degree of freedom relative to the hook body; or the support rod 5 is rotatably connected with the hook body, so that the self-locking piece has a rotational degree of freedom relative to the hook body; from the locking piece with after bracing piece 5 is connected, rely on the dead weight, first frame 4 backstop is in the opening part of crotch 3, second frame 2 supports the lateral surface that its opening part was kept away from to crotch 3.

The utility model provides a lifting hook anticreep device, compared with the prior art, rotate the auto-lock spare of being connected with the lifting hook through setting up, and be connected the back with bracing piece 5 from the auto-lock spare through being the acute angle, rely on the dead weight, first frame 4 backstop is at the opening part of crotch 3, second frame 2 supports the lateral surface of keeping away from its opening part at crotch 3, realize the auto-lock to the lifting hook body, when hoist and mount thing is taken off to needs, only need the second frame 2 of upwards rotating, then second frame 2 drives first frame 4 downwardly rotating, first frame 4 can let out the opening of crotch 3, take off hoist and mount thing. The utility model provides an mousing-hook device, simple structure, the preparation is easy, does not need accurate preparation, does not need the elasticity of spring, but utilizes the dead weight of self to realize the auto-lock, and is not fragile, and very suitable hoisting equipment operational environment is abominable, hoist thick mad mode, has avoided the potential safety hazard that this kind of vulnerable part of spring often damages and causes, has also reduced the cost of manpower maintenance.

As a specific embodiment of the utility model provides a lifting hook anticreep device please refer to fig. 1 to 2, connecting portion 1 orientation one side of crotch 3 is equipped with bellying 8, be equipped with on the bellying 8 and be used for the through-hole that bracing piece 5 passed, bracing piece 5 with the help of the through-hole with the lifting hook body forms to rotate and connects. The supporting rod 5 penetrates through the through hole in the lifting hook body, so that the supporting rod 5 is convenient to mount and dismount, and is convenient to maintain and replace.

As a specific implementation manner of the embodiment of the present invention, please refer to fig. 1 to 5, the support rod 5 is a member made of round steel, the sleeve 6 is sleeved on the support rod 5, the sleeve 6 is connected with the support rod 5 in a rotating manner, the support rod 5 is provided with an anti-dropping limiting structure for preventing the sleeve 6 from dropping, and the self-locking element is fixed on the sleeve 6. The self-locking piece and the sleeve 6 can be welded and fixed, and can be detachably fixed with the sleeve 6 through a fixing structure, for example, a groove and an anti-slip limiting structure are arranged in the back. Because the self-locking piece of this paper is frame-type structure, when mousing-hook device is assembling on the lifting hook, can be connected bracing piece 5 and lifting hook earlier, then, will be from the lower side of self-locking piece from the lifting hook suit in the direction of going up, until the self-locking piece supports on bracing piece 5, will be connected from self-locking piece and bracing piece 5 again. The installation is dismantled simple and conveniently, and the maintenance is simple and convenient.

As a specific implementation manner of the embodiment of the present invention, referring to fig. 1 to 4, the anti-disengaging limiting structure is a nut 7 connected to the supporting rod 5 by a thread or a limiting pin penetrating through the supporting rod 5. The sleeve 6 is positioned and limited, and the sleeve 6 is prevented from sliding left and right along the support rod 5.

As a specific implementation manner of the embodiment of the present invention, please refer to fig. 1 to 4, grooves are disposed at two ends of the sleeve 6, the self-locking element is supported by the grooves, and the positions of the grooves are disposed with anti-slip limiting structures for preventing the self-locking element from slipping out. This embodiment is through recess and the antiskid limit structure who sets up for be detachable from the latch fitting with being connected of bracing piece 5, be convenient for installation maintenance and change. In this embodiment, the structure of the grooves is not shown on the sleeve.

As a specific implementation manner of the embodiment of the present invention, please refer to fig. 1 to 4, the anti-slip limiting structure includes a blocking piece connected with one side of the groove and a positioning column provided with the other side of the groove, the end portion of the blocking piece is provided with a card to be inserted into the bayonet of the positioning column, the blocking piece is rotated to shield the blocking piece on the groove, and the locking piece is provided. This embodiment is through recess and the antiskid limit structure who sets up for be detachable from the latch fitting with being connected of bracing piece 5, be convenient for installation maintenance and change. Here, the rotation of the shutter may be a rotation about a vertical axis or a rotation about a horizontal axis. Or the blocking piece is a hook, and a hanging ring is arranged on one side corresponding to the groove. In this embodiment, the hook, the hanging ring, the baffle and the positioning column are commonly used hanging structures, and no illustration is given here.

As a specific implementation manner of the embodiment of the present invention, please refer to fig. 4, the sleeve 6 is a split structure, and is disposed at the short sleeve 9 at the two ends of the support rod 5, the two ends of the short sleeve 9 are respectively disposed with the anti-dropping limiting structure, and the self-locking member is connected to two of the short sleeve 9. And locking nuts 7 are respectively arranged at two ends of the short sleeve 9, so that the short sleeve is convenient to disassemble, position and adjust. The corresponding support rod 5 is provided with a thread section.

As a specific implementation manner of the embodiment of the present invention, please refer to fig. 5, the self-locking member is a member formed by bending a round steel, and the joint is located on the second frame 2, and the joint is provided with a thread sleeve 10 for connection. When the self-locking piece is rotatably connected or detachably connected with the support rod 5 or the sleeve 6, for example, the sleeve 6 is provided with a groove in a detachable connection mode, the threaded sleeve 10 is arranged at the butt joint, and the self-locking piece can be opened and taken down, so that the worn part can be independently replaced, the consumption of materials is further reduced, and the maintenance cost is reduced.

As a specific implementation manner of the embodiment of the present invention, please refer to fig. 1 to 5, the first frame 4 is supported on a section of the inner wall of the hook 3, and is provided with a wear-resistant sleeve. Because the first frame 4 is arranged in the hook 3, the first frame is easily scratched by hoisted objects, and the abrasion-resistant sleeve is arranged, the strength of the part can be improved, and the scrapping of the whole device caused by high abrasion degree is avoided. Wherein the wear sleeve is not shown in the figures.

As a specific implementation manner of the embodiment of the present invention, please refer to fig. 1 to 4, wherein the first frame 4 and the second frame 2 are both rectangular frame structures. By adopting the rectangular frame, all sides forming the frame are straight sides, and particularly for the part in contact with the lifting hook body, the contact area can be increased, and the self-locking reliability is improved.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention.

Claims

1. Lifting hook anticreep device, its characterized in that includes:

the lifting hook comprises a lifting hook body and a lifting hook, wherein the lifting hook body comprises a connecting part and a hook integrally connected with the connecting part;

the supporting rod is connected to one side, facing the hook, of the connecting part of the hook body, and is perpendicular to a plane where the hook is located;

the self-locking piece comprises a first frame and a second frame which is connected with the first frame in an acute angle, and the connecting corner of the first frame and the second frame is rotatably connected with the supporting rod, so that the self-locking piece has a rotational degree of freedom relative to the hook body; or the supporting rod is rotatably connected with the lifting hook body, so that the self-locking piece has a rotational degree of freedom relative to the lifting hook body;

from the latch fitting with the bracing piece is connected the back, relies on the dead weight, first frame backstop is in the opening part of crotch, the second frame supports the lateral surface that its opening part was kept away from to the crotch.

2. The hook anti-drop device as claimed in claim 1, wherein a protrusion is provided on a side of the connection portion facing the hook, and a through hole is provided on the protrusion for the support rod to pass through, and the support rod is rotatably connected to the hook body via the through hole.

3. The drop-proof device for a lifting hook as claimed in claim 2, wherein the supporting rod is a member made of round steel, a sleeve is sleeved on the supporting rod, the sleeve is rotatably connected with the supporting rod, a drop-proof limit structure for preventing the sleeve from dropping off is arranged on the supporting rod, and the self-locking piece is fixed on the sleeve.

4. The hook anti-drop device of claim 3, wherein the anti-drop limiting structure is a nut in threaded connection with the supporting rod or a limiting pin inserted into the supporting rod.

5. A hook release prevention device as claimed in claim 3, wherein grooves are provided at both ends of the sleeve, the self-locking member is supported in the grooves, and anti-slip limit structures for preventing the self-locking member from slipping out are provided at the positions of the grooves.

6. The drop-proof device of lifting hook according to claim 5, wherein the anti-slip limiting structure comprises a blocking piece rotatably connected with one side of the groove and a positioning column provided with the other side of the groove, the end of the blocking piece is provided with a bayonet which is clamped into the positioning column, and the blocking piece is rotated to be shielded on the groove to lock the self-locking piece.

7. The drop-preventing device for the lifting hook as claimed in claim 3, wherein the sleeve is a split structure and comprises two short sleeves respectively arranged at two ends of the supporting rod, the two ends of the short sleeves are respectively provided with the drop-preventing limiting structures, and the self-locking member is connected to the two short sleeves.

8. The drop-preventing device for a lifting hook according to claim 1, wherein the self-locking part is a member formed by bending a round steel, a butt joint of the self-locking part is provided on the second frame, and a threaded sleeve for connection is provided at the butt joint.

9. The drop-off preventing device for a lifting hook as claimed in claim 1, wherein a section of the first frame supported by the inner wall of the hook is provided with a wear-resistant sleeve.

10. The hook drop-off prevention device as claimed in claim 1, wherein the first frame and the second frame are each a rectangular frame structure.