CN216072724U

CN216072724U - Lifting hook anticreep ware and hook assembly

Info

Publication number: CN216072724U
Application number: CN202121869683.6U
Authority: CN
Inventors: 翟永刚; 王霞; 张华明; 高岷; 翟东刚
Original assignee: Shendong Coal Branch of China Shenhua Energy Co Ltd; Guoneng Shendong Coal Group Co Ltd
Current assignee: Shendong Coal Branch of China Shenhua Energy Co Ltd; Guoneng Shendong Coal Group Co Ltd
Priority date: 2021-08-10
Filing date: 2021-08-10
Publication date: 2022-03-18
Anticipated expiration: 2031-08-10

Abstract

The utility model discloses a lifting hook anti-drop device and a lifting hook device, comprising a swing arm, an anti-drop plate and a balancing weight; the anti-falling plate is fixedly connected to the front end of the swing arm, and the counterweight block is mounted at the rear end of the swing arm through a first pivot shaft; the anti-falling plate comprises a main plate and an arc-shaped bent plate connected with the main plate, the main plate is fixedly connected with the swing arm, and a lifting lug used for the second pivot shaft to penetrate through to be connected with the lifting hook is arranged on the main plate. According to the lifting hook anti-falling device and the lifting hook device, the installation is convenient without a pressure spring, the balancing weight is positioned at the outer side, and constructors can observe the condition of the balancing weight to know the safety condition of the lifting hook anti-falling device, so that the safety of the hoisting operation is improved.

Description

Lifting hook anticreep ware and hook assembly

Technical Field

The utility model relates to the technical field of hook falling prevention, in particular to a hook falling prevention device and a hook device.

Background

An anti-falling device is arranged in a lifting hook of the crown block or the hoisting tool and used for preventing the sling from separating from the lifting hook.

The anti-drop device in the prior art is a whole clamping plate arranged in a hook of a lifting hook, and a pressure spring is arranged between the clamping plate and the root part of the lifting hook. When the sling is placed in the lifting hook, the clamping plate is propped against the inner wall of the lifting hook by the pressure spring, so that the sling cannot be unhooked. After the heavy object is unloaded, the clamping plate is manually stirred to leave a gap for unhooking the sling.

The anti-disengaging device among the prior art needs the installation pressure spring, inconvenient installation to after long-term the use, the easy mechanical fatigue damage of pressure spring, the anti-disengaging device has the inefficacy risk, has great potential safety hazard to the hoist and mount operation.

In view of the above, it is desirable to provide a hook stopper and a hook apparatus which are easy to install and have high safety.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a lifting hook anti-falling device which is convenient to install and high in safety and a lifting hook device.

The technical scheme of the utility model provides a hook anti-falling device which comprises a swing arm, an anti-falling plate and a balancing weight;

the anti-falling plate is fixedly connected to the front end of the swing arm, and the counterweight block is mounted at the rear end of the swing arm through a first pivot shaft;

the anti-falling plate comprises a main plate and an arc-shaped bent plate connected with the main plate, the main plate is fixedly connected with the swing arm, and a lifting lug used for the second pivot shaft to penetrate through to be connected with the lifting hook is arranged on the main plate.

In an optional technical solution, the curved plate and the main plate are integrally formed.

In an optional technical solution, the lifting lug is integrally formed with the main plate.

In an alternative embodiment, the arc-shaped bending plate has a bending plate through hole.

In an alternative embodiment, the hook anti-drop device includes two swing arms arranged at intervals;

the main board is connected between the front ends of the two swing arms, and the counterweight block is connected between the rear ends of the two swing arms through the first pivot shaft.

In one optional technical scheme, the counterweight block is a U-shaped plate, and two ends of the U-shaped plate are connected with the rear ends of the two swing arms through the first pivot shafts respectively.

In an alternative embodiment, the main plate is welded to the swing arm.

In an alternative embodiment, the front end of the swing arm is provided with an extension arm extending downward and forward, and the main plate is connected to the extension arm.

In one alternative, the extension arm is integrally formed with the swing arm.

The technical scheme of the utility model also provides a lifting hook device which comprises a lifting hook and the lifting hook anti-falling device in any one of the technical schemes;

the lifting hook comprises a suspension arm and a hook head with a hook groove, and the hook head is connected below the suspension arm;

the swinging arm is positioned on one side of the hook head, and the counterweight block is positioned behind the hook head;

the lifting lug is connected with the lifting arm through the second pivot shaft, and the arc-shaped bent plate is located in the hook groove and can close the notch of the hook groove.

By adopting the technical scheme, the method has the following beneficial effects:

according to the lifting hook anti-falling device and the lifting hook device provided by the utility model, the anti-falling plate is positioned in the hook groove of the hook head of the lifting hook, the main board of the anti-falling plate is connected with the suspension arm of the lifting hook through the second pivot shaft, so that the swing arm positioned behind the anti-falling plate can rotate around the second pivot shaft, the counterweight block is connected to the rear end of the swing arm through the first pivot shaft, and the counterweight block can drive the swing arm to rotate, so that the anti-falling plate upwarps in the hook groove, and the notch of the hook groove is closed, and the lifting rope is prevented from being separated from the hook head. When the sling needs to be detached, the counterweight block is jacked upwards to enable the anti-falling plate to move downwards in the hook groove, so that the notch of the hook groove is opened to take down the sling.

According to the lifting hook anti-disengaging device and the lifting hook device, a pressure spring is not needed, so that the lifting hook anti-disengaging device and the lifting hook device are convenient to install, the balancing weight is located at the outer side, constructors can observe the condition of the balancing weight to know the safety condition of the lifting hook anti-disengaging device, and the safety of lifting operation is improved.

Drawings

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

FIG. 2 is a perspective view of the anti-separation plate and the swing arm connected together;

fig. 3 is a perspective view of a hook device according to an embodiment of the present invention.

Detailed Description

The following further describes embodiments of the present invention with reference to the accompanying drawings. In which like parts are designated by like reference numerals. It should be noted that the terms "front," "back," "left," "right," "upper" and "lower" used in the following description refer to directions in the drawings, and the terms "inner" and "outer" refer to directions toward and away from, respectively, the geometric center of a particular component.

As shown in fig. 1-2, a hook anti-release device according to an embodiment of the present invention includes a swing arm 1, an anti-release plate 2, and a counterweight 3.

Anticreep board 2 fixed connection is in the front end of swing arm 1, and balancing weight 3 passes through first pivotal axis and installs the rear end at swing arm 1.

The anti-dropping plate 2 comprises a main plate 21 and an arc-shaped bent plate 22 connected with the main plate 21, the main plate 21 is fixedly connected with the swing arm 1, and a lifting lug 23 for the second pivot shaft to pass through to be connected with a lifting hook is arranged on the main plate 21.

The hook anti-release device provided by the utility model is used for being installed on the hook 4 shown in fig. 3 to open and close the notch 422 of the hook groove 421 of the hook head 42. Generally, the hook groove 421 is a U-shaped groove.

The anti-drop device of the lifting hook mainly comprises a swing arm 1, an anti-drop plate 2 and a balancing weight 3. The retaining plates 2 and the counter weight 3 are disposed at the front and rear ends of the swing arm 1. The anti-dropping plate 2 is fixedly connected to the front end of the swing arm 1, and the counterweight 3 is pivotally mounted at the rear end of the swing arm 1. Specifically, the counterweight 3 is installed at the rear end of the swing arm 1 through the first pivot shaft, and when the swing arm 1 swings up and down, the counterweight 3 rotates on the first pivot shaft, so that the counterweight 3 is kept vertical, and the contact with the hook head 42 of the lifting hook 4 is avoided as much as possible.

The anti-falling plate 2 comprises a main plate 21 and an arc-shaped bent plate 22, the main plate 21 is fixedly connected with the swing arm 1, and the arc-shaped bent plate 22 is connected to the front portion of the main plate 21. The curved plate 22 may conform to the notch 422 to better close the notch 422.

The main plate 21 is provided with a lifting lug 23, the lifting lug 23 is used for a second pivot shaft to pass through so as to pivotally connect the anti-dropping plate 2 with the suspension arm 41 of the lifting hook 4, and the swing arm 1 is fixedly connected with the anti-dropping plate 2, so that the swing arm 1 can rotate around the second pivot shaft.

During the installation, anticreep board 2 is in hook groove 421 of gib head 42, and mainboard 21 of anticreep board 2 passes through the second pivotal axis and is connected with davit 41 for swing arm 1 that is in anticreep board 2 rear can be round the second pivotal axis rotation, and balancing weight 3 is connected at swing arm 1's rear end through first pivotal axis, and balancing weight 3 can order swing arm 1 to rotate, makes anticreep board 2 upwarp in hook groove 421, thereby seals the notch 422 of hook groove 421, in order to avoid the hoist cable to break away from gib head 42. When the sling needs to be detached, the counterweight 3 is jacked up upwards, so that the anti-falling plate 2 moves downwards in the hook groove 421, and the notch 422 of the hook groove 421 is opened to remove the sling.

According to the lifting hook anti-disengaging device and the lifting hook device, a pressure spring is not needed, so that the lifting hook anti-disengaging device and the lifting hook device are convenient to install, the balancing weight 3 is located at the outer side, constructors can observe the condition of the balancing weight 3 to know the safety condition of the lifting hook anti-disengaging device, and the safety of lifting operation is improved.

In one embodiment, the curved plate 22 is integrally formed with the main plate 21. The anti-falling plate 2 is a steel plate or an alloy plate, the arc-shaped bent plate 22 and the main plate 21 are integrally cast or stamped, and the structural strength is high.

In one embodiment, the lifting lug 23 is integrally formed with the main plate 21, so that the structural strength of the lifting lug 23 and the main plate 21 is improved, and the lifting lug can be stably connected with the suspension arm 41.

In one embodiment, as shown in fig. 1-2, the curved plate 22 has a curved plate through hole 221, which saves material, and can reduce the structural strength of the curved plate 22 properly, so that it has a certain elastic deformation capability, and has a certain buffering effect when the curved plate 22 contacts with the inner wall of the notch 422.

In one embodiment, as shown in fig. 1-2, the hook stopper includes two swing arms 1 arranged at a distance. The main plate 21 is connected between the front ends of the two swing arms 1, and the counterweight 3 is connected between the rear ends of the two swing arms 1 through a first pivot shaft.

When the lifting hook is installed, the two swing arms 1 are positioned on the left side and the right side of the hook head 42, so that the stability of the lifting hook anti-falling device and the lifting hook 4 during assembling is improved.

In one embodiment, as shown in fig. 1-2, the counterweight 3 is a U-shaped plate 31, and two ends of the U-shaped plate 31 are respectively connected with the rear ends of the two swing arms 1 through a first pivot shaft, so that the counterweight 3 is conveniently connected with the two swing arms 1.

In one embodiment, the main plate 21 is welded to the swing arm 1, so that the main plate 21 and the swing arm 1 can be connected conveniently and firmly.

In one embodiment, as shown in fig. 1-2, the front end of the swing arm 1 is provided with an extension arm 11 extending forward and downward, and the main plate 21 is connected to the extension arm 11, so as to facilitate the anti-dropping plate 2 to extend forward and downward into the hook groove 421.

In one embodiment, the extension arm 11 is integrally formed with the swing arm 1. The extension arm 11 and the swing arm 1 are metal plates, can be integrally cast or integrally formed by punching, are convenient to process and have high structural strength.

As shown in fig. 3, a hook device according to an embodiment of the present invention includes a hook 4 and a hook release preventer according to any one of the embodiments.

The hook 4 comprises a boom 41 and a hook head 42 having a hook groove 421, the hook head 42 being connected below the boom 41.

The swing arm 2 is located at one side of the hook head 42, and the counterweight 3 is located behind the hook head 42.

The lifting lug 23 is connected to the boom 41 by a second pivot axis, and the curved bent plate 42 is in the hook slot 421 and can close the notch 422 of the hook slot 421.

The lifting hook device provided by the utility model comprises a lifting hook 4 and a lifting hook anti-falling device.

For the structure, structure and working principle of the hook anti-release device, please refer to the description of the hook anti-release device, which is not repeated herein.

The hook 4 comprises a boom 41 and a hook head 42, the hook head 42 is connected below the boom 41, the hook head 42 has a hook groove 421, and a notch 422 of the hook groove 421 is located above. Hook slot 421 is a generally U-shaped slot.

The lower end of the boom 41 is provided with a lug 411, the lug 411 being located between the two lifting eyes 23 and being connected by a second pivot axis.

The arc-shaped bent plate 42 is positioned in the hook groove 421, the swing arm 2 is positioned at one side of the hook head 42, and the counterweight 3 is positioned behind the hook head 42. The distance between the second pivot shaft and the end of the arc-shaped bent plate 42 is greater than the distance between the second pivot shaft and the front wall of the notch 422 so that the arc-shaped bent plate 42 can close the notch 422.

After the installation, anticreep board 2 is in hook groove 421, and mainboard 21 is connected with davit 41 through the second pivotal axis for swing arm 1 that is in anticreep board 2 rear can rotate around the second pivotal axis, and balancing weight 3 can drive swing arm 1 and rotate, makes anticreep board 2 upwarp in hook groove 421, thereby seals notch 422, in order to avoid the hoist cable to break away from gib head 42. When the sling needs to be detached, the counterweight 3 is jacked upwards to enable the anti-falling plate 2 to move downwards in the hook groove 421, so that the notch 422 is opened to remove the sling.

According to the lifting hook anti-drop device and the lifting hook device, the lever principle is adopted, the swinging arm is driven to rotate through the counterweight block, the arc-shaped bent plate is attached to the inner surface of the front side of the notch 422, and the hook groove 41 is in a closed state.

According to the needs, the above technical schemes can be combined to achieve the best technical effect.

The foregoing is considered as illustrative only of the principles and preferred embodiments of the utility model. It should be noted that, for those skilled in the art, several other modifications can be made on the basis of the principle of the present invention, and the protection scope of the present invention should be regarded.

Claims

1. A lifting hook anti-drop device is characterized by comprising a swing arm, an anti-drop plate and a balancing weight;

2. The hook release preventer of claim 1, wherein the curved plate is integrally formed with the main plate.

3. The hook release preventer of claim 1, wherein the lifting lug is integrally formed with the main plate.

4. The hook release preventer of claim 1, wherein the arcuate flexural plate has flexural plate through holes.

5. The hook lock as claimed in claim 1, wherein the hook lock comprises two of the swing arms spaced apart;

6. A lifting hook anti-drop device as claimed in claim 5, wherein the weight block is a U-shaped plate, and both ends of the U-shaped plate are connected to the rear ends of the two swing arms through the first pivot shafts, respectively.

7. The hook lock according to claim 1, wherein the main plate is welded to the swing arm.

8. The hook stopper as claimed in claim 1, wherein the swing arm is provided at a front end thereof with an extension arm extending obliquely downward forward, and the main plate is connected to the extension arm.

9. The hook dropout prevention apparatus of claim 8 wherein said extension arm is integrally formed with said swing arm.

10. A hook device, comprising a hook and the hook stopper of any one of claims 1 to 9;