CN102897655A - a decoupling device - Google Patents

Abstract

The invention relates to a unhooking device which comprises a support, a first pin shaft, a first hook, a second pin shaft, a second hook and a lifting mechanism, wherein the first hook is hinged to the support through the first pin shaft, the lifting mechanism is connected with the first hook, the first hook rotates around the first pin shaft under the action of the lifting mechanism, the second hook is hinged to the support through the second pin shaft, a first gear is fixedly arranged on the first pin shaft, a second gear is fixedly arranged on the second pin shaft, the first gear and the second gear are in meshing transmission, a first hook tongue and a second hook tongue are respectively arranged at one end of the first hook and one end of the second hook, the first hook tongue and the second hook tongue are staggered, and the side faces of the first hook tongue and the second hook tongue are abutted to form a hook object space. The invention has the advantages that: the mode of gear linkage double-hook is adopted, the instability of the load when the load falls is overcome when the load is released, or the steel wire rope connected with the hook and the hook rebound when the load is suddenly lost, the operation equipment is protected, and the device has a simple structure and is convenient to operate.

Description

a decoupling device

(1) Technical field

The invention relates to a decoupling device.

(2) Background technology

With the continuous development of engineering technology, the use status of the load hook of lifting equipment has also changed accordingly. For example, lifting a load, releasing it in the air, impacting the load-bearing object at the corresponding position below, or releasing the falling object during the drop test. Usually, a single hook equipped with general lifting equipment is used. If the hook is shallow, accidental falling accidents often occur. If the hook is deep, it is difficult to release the load or fall. If it is forced to release, it will generate a large horizontal force and force. The impact of the counter force makes the load unstable when it falls, or the steel wire rope and the hook connected to the hook rebound when the load is suddenly lost, which is easy to damage the operating equipment.

(3) Contents of the invention

In order to make up for the above deficiencies, the present invention provides a decoupling device with simple structure and convenient operation.

The present invention adopts the following scheme: a decoupling device, including a bracket, a first pin shaft, a first hook and a lifting mechanism, the first hook is hinged on the bracket through the first pin shaft, and the lifting mechanism is connected to the first hook , under the action of the pulling mechanism, the first hook rotates around the first pin shaft, and it is characterized in that: the decoupling device also includes a second pin shaft and a second hook, and the second hook is hinged on the bracket through the second pin shaft, so The first gear is fixedly installed on the first pin shaft, the second gear is fixedly installed on the second pin shaft, the first gear and the second gear are meshed for transmission, and one end of the first hook and the second hook is respectively provided with a first hook The tongue and the second knuckle, the first knuckle and the second knuckle are staggered and the sides are close to each other to form a hook space.

The above-mentioned uncoupling device is characterized in that: the first knuckle is provided with a first concave position, the second knuckle is provided with a second concave position, and the first concave position and the second concave position are relatively combined to form the hook object space.

The above-mentioned uncoupling device is characterized in that: the pulling mechanism includes a first connecting rod, a second connecting rod, a third pin shaft, a brake lever and an anti-rotation cylindrical pin;

One end of the first hook away from the first knuckle is hinged to one end of the first connecting rod, the other end of the first connecting rod is hinged in the middle of the brake lever through a third pin, and one end of the second connecting rod is hinged On the bracket, the second connecting rod is provided with a chute, the anti-rotation cylindrical pin is fixedly installed at one end of the brake lever, and the anti-rotation cylindrical pin is installed on the chute;

The chute is a combination of parallel grooves and round holes. There are two flat positions in the middle of the anti-rotation cylindrical pin. The bottom surfaces of the two flat positions are parallel, and the distance between the bottom surfaces of the two flat positions is smaller than the gap between the parallel grooves. , the anti-rotation cylindrical pin can rotate around the central axis of the round hole at the round hole of the chute. When the anti-rotation cylindrical pin is at the parallel groove of the chute, the anti-rotation cylindrical pin is stuck in the parallel groove, so that the second connecting rod follows The moving rod moves synchronously.

The above-mentioned uncoupling device is characterized in that: the second connecting rod is provided with a stopper corresponding to the third pin.

The above-mentioned decoupling device is characterized in that: two support rods protrude symmetrically outward from both sides of the bracket, and roller guide shoes are installed on the support rods.

The above-mentioned uncoupling device is characterized in that: the bracket includes a left bracket, a right bracket, a connecting shaft and several struts, the connecting shaft connects the left bracket and the right bracket and is located at its upper end, and the left bracket and the right bracket pass through several The struts are assembled into one piece.

The advantage of the present invention is that: the way of gear linkage double hooks is adopted to overcome the instability of the load when the load is released, or the rebound of the steel wire rope and the hook connected to the hook when the load is suddenly lost, so as to protect the operating equipment and the device structure Simple and easy to operate.

(4) Description of drawings

Fig. 1 is the three-dimensional schematic diagram of the present invention;

Fig. 2 is the explosion schematic diagram of the present invention;

Fig. 3 is a schematic diagram of the separation state of the second connecting rod and the brake lever;

Fig. 4 is a schematic diagram of the standby state of the present invention;

Fig. 5 is a schematic diagram of the present invention's ready state;

Fig. 6 is a schematic diagram of the starting state of the present invention;

Fig. 7 is a schematic diagram of the working state of the present invention.

(5) Specific implementation methods

The present invention will be described in further detail below in conjunction with the accompanying drawings.

Embodiment: a decoupling device as shown in Figures 1 to 7, including a bracket 1, a first pin shaft 2-1, a second pin shaft 3-1, a first hook 2-2, and a second hook 3-2 and the lifting mechanism, the first hook 2-2 is hinged on the bracket 1 through the first pin shaft 2-1, the second hook 3-2 is hinged on the bracket 1 through the second pin shaft 3-1, and the lifting mechanism is connected with the first pin shaft 3-1. A hook 2-2 is connected, and under the action of the lifting mechanism, the first hook 2-2 rotates around the first pin shaft 2-1, and the first gear 2-3 is fixedly installed on the first pin shaft 2-1 , the second pin shaft 3-1 is fixedly installed with the second gear 3-3, the first gear 2-3 and the second gear 3-3 mesh transmission, one end of the first hook 2-2 and the second hook 3-2 Each is provided with a first knuckle 2-4 and a second knuckle 3-4, the first knuckle 2-4 is provided with a first recess 2-5, and the second knuckle 3-4 is provided with a second recess 3 -5, the first knuckle tongue 2-4 and the second knuckle tongue 3-4 are staggered and the sides are close to each other so that the first concave position 2-5 and the second concave position 3-5 are relatively merged into a hook space. The gear-linked double-hook method overcomes the instability of the load when the load is released, or the rebound of the wire rope and the hook connected to the hook when the load is suddenly lost, protecting the operating equipment.

The pulling mechanism includes a first connecting rod 4-1, a second connecting rod 4-2, a third pin shaft 4-3, a brake lever 4-4 and an anti-rotation cylindrical pin 4-5. One end of the first hook 2-2 away from the first knuckle tongue 2-4 is hinged with one end of the first connecting rod 4-1, and the other end of the first connecting rod 4-1 is hinged at the third pin shaft 4-3. In the middle of the brake rod 4-4, one end of the second connecting rod 4-2 is hinged on the bracket 1, the second connecting rod 4-2 is provided with a chute 5, and the anti-rotation cylindrical pin 4-5 is fixedly installed on the brake rod One end of 4-4, anti-rotation cylindrical pin 4-5 is installed on the chute 5. The chute 5 is a splicing of the parallel groove 5-1 and the round hole 5-2 into one body. There are two flat positions in the middle of the anti-rotation cylindrical pin 4-5. The bottom surfaces of the two flat positions are parallel, and the two flat positions The distance between the bottom surfaces is less than the gap between the parallel grooves 5-1, the anti-rotation cylindrical pin 4-5 can rotate around the central axis of the circular hole 5-2 at the round hole 5-2 of the chute, and the anti-rotation cylindrical pin 4-5 When at the parallel groove 5-1 place of the chute 5, the anti-rotation cylindrical pin 4-5 is stuck in the parallel groove 5-1, so that the second connecting rod 4-2 acts synchronously with the brake lever 4-4. The second connecting rod 4-2 is also provided with a stop portion 4-21 corresponding to the third pin shaft 4-3, so that when the brake lever 4-4 is lifted, not only the anti-rotation cylindrical pin 4-5 is force, and at the stop portion 4-21, the stress points are dispersed, the upward pulling force of the brake lever 4-4 is saved, and the stress surface of the anti-rotation cylindrical pin 4-5 is protected.

Bracket 1 comprises left bracket 1-1, right bracket 1-2, connecting shaft 1-3 and some struts 1-4, and described connecting shaft 1-3 connects left bracket 1-1 and right bracket 1-2 and is positioned at it. At the upper end, the strut 1-4 connects the left support 1-1 and the right support 1-2 to make it fixed as a whole. The left support 1-1 and the right support 1-2 are respectively provided with two support rods 1-5 that are symmetrically stretched out outwards, and roller guide shoes 1-6 are installed on the support rods 1-5. Roller guide shoe 1-6 cooperates with guide rail etc. to keep support 1 balanced and stable during use.

The working process of the uncoupling device is as follows: as shown in Figure 4 to Figure 7 (save the second hook 3-2 and the first gear 2-3 and the second gear 3-3 among the figures), at first it is in standby mode, and now the system The moving rod 4-4 is inclined downward, and the anti-rotation cylindrical pin 4-5 is positioned at the circular hole 5-2 of the chute 5, and one end of the brake lever 4-4 is pulled so that it can go around the circular hole 5 of the chute 5. -2 The central axis rotates and enters the ready state. In the ready state, the heavy object is placed in the hook space, and a heavy device is connected to the connecting shaft 1-3 to make the bracket 1 rise slightly to generate an upward pulling force. Under the joint action of the pulling force and the gravity of the heavy object, the first hook 2- 2 Rotate around the first pin shaft 2-1, drive the first gear 2-3 and drive the second gear 3-3 at the same time, make the second hook 3-2 rotate around the second pin shaft 3-1, make the first knuckle The first concave position 2-5 of 2-4 and the second knuckle tongue 3-4 is relatively merged into the hook object space with the second concave position 3-5, and grasps heavy objects. At the same time, due to the rotation of the first hook 2-2, the first connecting rod 4-1 produces a force to the right, pushing the anti-rotation cylindrical pin 4-5 into the parallel groove 5-1 of the chute 5 and being stuck in the parallel groove 5-1. In the groove 5-1, make the second connecting rod 4-2 act synchronously with the brake lever 4-4 and enter the starting state. After entering the starting state, continue to lift one end of the brake lever 4-4, so that the second connecting rod 4-2 rotates around the hinge shaft as it rises, so that the first connecting rod 4-1 produces a leftward thrust to act on the The first hook 2-2, the first hook 2-2 rotates around the first pin shaft 2-1, drives the second gear 3-3 while driving the first gear 2-3, makes the second hook 3-1 around the second Pin shaft 3-1 rotates, and first knuckle 2-4 and second knuckle 3-4 are separated and release weight.

It is necessary to point out that the above embodiments are only used to further illustrate the present invention, and should not be interpreted as limiting the protection scope of the present invention. Those of ordinary skill in the art can make some non-essential changes to the above embodiments according to the essence of the present invention. improvements and adjustments.

Claims (6)

1. A decoupling device, comprising a support, a first pin, a first hook and a lifting mechanism, the first hook is hinged on the support by the first pin, the lifting mechanism is connected with the first hook, and when pulling Under the action of the mechanism, the first hook rotates around the first pin shaft, and it is characterized in that: the decoupling device also includes a second pin shaft and a second hook, the second hook is hinged on the bracket through the second pin shaft, and the first pin The first gear is fixedly installed on the shaft, the second gear is fixedly installed on the second pin shaft, and the first gear and the second gear are meshed for transmission. One end of the first hook and the second hook is respectively provided with a first knuckle and a second The knuckle, the first knuckle and the second knuckle are staggered and the sides are close to each other to form a hook space. 2. A decoupling device according to claim 1, characterized in that: the first knuckle is provided with a first recess, the second knuckle is provided with a second recess, and the first recess and the second recess Bits are relatively merged into the hook space. 3. A decoupling device according to any one of claims 1 or 2, characterized in that: the pulling mechanism comprises a first connecting rod, a second connecting rod, a third pin shaft, a brake lever and an anti-rotation cylinder pin; One end of the first hook away from the first knuckle is hinged to one end of the first connecting rod, the other end of the first connecting rod is hinged in the middle of the brake lever through a third pin, and one end of the second connecting rod is hinged On the bracket, the second connecting rod is provided with a chute, the anti-rotation cylindrical pin is fixedly installed at one end of the brake lever, and the anti-rotation cylindrical pin is installed on the chute; The chute is a combination of parallel grooves and round holes. There are two flat positions in the middle of the anti-rotation cylindrical pin. The bottom surfaces of the two flat positions are parallel, and the distance between the bottom surfaces of the two flat positions is smaller than the gap between the parallel grooves. , the anti-rotation cylindrical pin can rotate around the central axis of the round hole at the round hole of the chute. When the anti-rotation cylindrical pin is at the parallel groove of the chute, the anti-rotation cylindrical pin is stuck in the parallel groove, so that the second connecting rod follows The moving rod moves synchronously. 4. The decoupling device according to claim 3, characterized in that: the second connecting rod is provided with a stopper corresponding to the third pin. 5. A decoupling device according to claim 3, characterized in that: two support rods protrude symmetrically outward from both sides of the bracket, and roller guide shoes are installed on the support rods. 6. A decoupling device according to claim 5, characterized in that: the bracket includes a left bracket, a right bracket, a connecting shaft and several struts, the connecting shaft connects the left bracket and the right bracket and is located at the upper end thereof, The left bracket and the right bracket are assembled into one body through several struts.

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