CN217894882U - Locking device for crane hook - Google Patents

Abstract

The utility model discloses a crane hook blocking device, it includes electromagnet, characterized by: one end of the first safety clamp and one end of the second safety clamp are arranged to be in an arc hook mouth shape, a connecting through hole is formed in one side of the arc hook mouth, a bolt penetrates through the through hole and is fastened by a nut, the other ends of the first safety clamp and the second safety clamp are fixedly connected through a balancing weight, one side of the assembling block is arc-shaped and matched with a lifting hook, an electromagnetic chuck is arranged at a position, close to a lifting hook pulling plate on one side of the balancing weight, of the crane lifting hook, and the electromagnetic chuck is connected with power supply equipment; the advantages are that: the safety clamp overcomes the defects that the safety clamp of the original lifting hook locking device is low in strength, the spring is easy to damage, the locking is not firm, the locking is not easy to operate and the like, the complexity of operation is reduced, the lifting hook locking device has good locking performance, and the working efficiency is improved.

Description

Locking device for crane hook

Technical Field

The utility model belongs to the technical field of lifting device, concretely relates to is a crane hook locking device.

Background

The crane hook is a common hanger in hoisting machinery, and is often hung on a steel wire rope of a hoisting mechanism by means of a pulley block and other components, and is used for connecting a load and preventing a heavy object from falling off during hoisting. At present, current lifting hook blocking device adopts spring lifting hook safety card structure when leaving the factory more, lean on the most advanced inboard of lifting hook through the spring separation blade top promptly, make spring lifting hook safety card articulate in lifting hook strength department, rely on spring force to make lifting hook safety card be in the locking state, reach the mesh of shutting mousing-hook, however, this kind of lifting hook blocking device receives the restriction of spring itself, it compresses tightly at the lifting hook most advanced to need great spring force assurance separation blade, when the lower plastic deformation that takes place of spring safety card intensity, can lead to the heavy object of hanging to be difficult for taking out, if the spring takes place to damage and leads to the blocking device inefficacy, can arouse the slippage of hoist and mount heavy object on the lifting hook, cause great potential safety hazard.

Therefore, a crane hook locking device with good locking performance, high strength, simple structure and convenient operation needs to be designed.

Disclosure of Invention

In order to solve the problem, the utility model provides a hoist lifting hook locking device has overcome original lifting hook locking device safety card intensity and has hanged down, and the spring fragile leads to the shutting to become invalid, and the locking is not firm, and shortcoming such as difficult operation alleviates the loaded down with trivial details degree of operation, makes lifting hook locking device have good shutting performance, has improved work efficiency.

In order to achieve the above purpose, the utility model provides a technical scheme is: it includes electromagnetic chuck, characterized by: one end of the first safety card and one end of the second safety card are set to be in the shape of an arc hook mouth, a connecting through hole is formed in one side of the arc hook mouth, a bolt penetrates through the through hole, a nut is adopted for fastening, the other ends of the first safety card and the second safety card are fixedly connected through a balancing weight, one side of the assembly block is arc-shaped and matched with a lifting hook, an electromagnetic chuck is arranged at a pulling plate of the lifting hook of the crane close to one side of the balancing weight, and the electromagnetic chuck is connected with power supply equipment.

Drawings

FIG. 1 is a schematic structural diagram of the present invention

FIG. 2 is a schematic structural diagram of the present invention

FIG. 3 is the open state implementation diagram of the present invention

FIG. 4 is a schematic diagram of the closed state of the present invention

FIG. 5 is a schematic view of the first and second safety cards of the present invention

Part numbers in the drawings: 1. a hook; 2. a first safety card; 3. a second safety card; 4. a balancing weight; 5. an electromagnetic chuck; 6. a bolt; 7. a nut; 8. and (5) pulling the plate.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and specific embodiments.

As shown in fig. 1-5, the one end of the first safety card 2 and the second safety card 3 is set to be in the shape of an arc hook mouth, a connecting through hole is formed in one side of the arc hook mouth, a bolt 6 penetrates into the through hole and is fastened by a nut 7, the other end of the first safety card 2 and the second safety card 3 is fixedly connected through a balancing weight 4, one side of the assembly block 4 is arc-shaped and is matched with a lifting hook 1, an electromagnetic chuck 5 is arranged at a position, close to one side of the balancing weight 4, of a crane lifting hook pulling plate 8, and the electromagnetic chuck 5 is connected with power supply equipment.

When the crane hook locking device is in a closed state, the arc hook mouths of the first safety clamp 2 and the second safety clamp 3 are in contact with the arc hook mouth hooking strength of the hook 1, one side of the arc hook mouths of the first safety clamp 2 and the second safety clamp 3 acts on two sides close to the hook 1 through the bolt 6 and the nut 7, the bolt 6 acts on the arc working face of the hook 1, and the arc inner surface of the balancing weight 4 is clamped on the arc surface of the hook 1. At the moment, the arc hook mouth parts of the first safety card 2 and the second safety card 3 incline upwards, the parts fixedly connected with the balancing weight 4 incline downwards, and the crane hook is in a locking state by means of gravity difference.

In order to better guarantee the locking performance of a crane hook, the counterweight block 4 is arranged into an arc shape, the better requirement is matched with the arc-shaped surface of the hook 1, when the hook is in a locking state, the arc hook mouths of the safety card I2 and the safety card II 3 act on two sides of the hook strength part at the upper part of the hook through the bolts 6, one side of the safety card I2 and one side of the safety card II 3 fixed with the counterweight block 4 are influenced by gravity, the arc-shaped surface obliquely acts on the hook 1 downwards, the arc-shaped surface of the hook is clamped on the arc-shaped surface of the hook through the counterweight block 4, a closed bearing area is formed on the hook, and sufficient and effective empty volume is provided.

When the installation scene in the pit relates to high altitude construction, receive narrow and small space operation condition restriction, the lifting height of unable accurate control balancing weight one side, but still need satisfy the hoist simultaneously when there is sufficient effectual bearing space in the lifting hook, at the lifting hook arm-tie 8 department of being close to balancing weight 4 one side, set up electromagnet 5, when the slope of safety card one 2 and safety card two 3 and balancing weight 4 fixed connection department upwards, through electrical apparatus controlling means, make electromagnet 5 produce magnetic force, with 4 side end face attractions of balancing weight, guarantee that lifting hook blocking device opens completely, make lifting hook blocking device realize remote control, improve intensity of labour, realize one-man operation, improve work efficiency.

This device can be according to the actual intensity that bears the heavy object of lifting hook, calculate and select panel preparation safety card one 2 of different thickness for use, safety card two 3 and balancing weight 4, satisfy intensity height and long service life's characteristics, only there is a degree of freedom because of this crane lifting hook blocking device, and original spring lifting hook anticreep device still need consider the lifting hook bear the deformation that back hook mouth department takes place and lead to the safety card can not popped out the circumstances such as, so the length of safety card must satisfy the width of lifting hook when the maximum opening, novel safety card shutting then does not have above-mentioned problem, can reduce the length of safety card shutting section greatly, the effective vacant area of lifting hook has been increased, improve blocking device's efficiency, guarantee that lifting hook blocking device reaches the shutting state of design, make safety card locking function firm.

When a crane is adopted to lift a heavy object in actual operation, a lifting appliance is extruded to enter a lifting hook working area through a hook opening of a lifting hook 1, a bolt 6 is completely extruded to the neck of the lifting hook 1 through external force, arc hook mouths of a safety clamp I2 and a safety clamp II 3 are extruded on an inner arc surface of the lifting hook 1, at the moment, the arc hook mouths of the safety clamp I2 and the safety clamp II 3 are inclined downwards under the action of the external force, one side connected with a balancing weight 4 is inclined upwards under the action of the extrusion force, an electric control system is used for electrifying an electromagnetic chuck 5 to generate magnetic force, one side end surface of the balancing weight 4 is attracted on the electromagnetic chuck 5, and the side connected with the balancing weight 4 is ensured to be closer to a lifting hook pull plate, the first safety clamp 2 and the second safety clamp 3 are arranged on the side of the arc hook mouth and are lower than one side of the balancing weight, sufficient and effective empty volume is reserved for the lifting appliance to smoothly enter a bearing area of the lifting hook 1, after the lifting appliance completely enters the lifting hook 1, the electromagnetic chuck 5 loses magnetic force through the electric control device, due to the fact that lifting appliance extrusion force and the magnetic force of the electromagnetic chuck are lost, the first safety clamp 2 and the second safety clamp 3 are restored to an initial locking state, namely, the arc hook mouths of the first safety clamp 2 and the second safety clamp 3 incline upwards, one side of the balancing weight 4 inclines downwards, the bolt 6 acts on the arc working face of the hook strength position on the upper portion of the lifting hook 1 again, and the function of crane lifting hook locking is achieved.

Claims (1)

1. Crane hook blocking device, it includes electromagnet, characterized by: one end of the first safety card and one end of the second safety card are set to be in the shape of an arc hook mouth, a connecting through hole is formed in one side of the arc hook mouth, a bolt penetrates into the through hole, a nut is adopted for fastening, the other ends of the first safety card and the second safety card are fixedly connected through a balancing weight, one side of the balancing weight is arc-shaped and matched with a lifting hook, an electromagnetic chuck is arranged at a pulling plate of the lifting hook of the crane close to one side of the balancing weight, and the electromagnetic chuck is connected with power supply equipment.

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