Tong-type automatic unhooking device

Abstract

The invention discloses a tong-type automatic unhooking device which belongs to the technical field of mechanical lifting and towing devices. The invention is characterized in that two tong pieces are symmetrically arranged; one end of each tong piece is hinged with one end of a connecting rod; the other end of the connecting rod is connected with a sliding block shaft; one end of the sliding block shaft is connected with an opening sliding block; the sliding block shaft and the opening sliding block are arranged in a sliding chute on a first drawplate and a sliding chute on a second drawplate; a post rod is also arranged in the sliding chute; one side of the post rod, which is different from the sliding block shaft, is connected with a connecting shaft; the other end of the sliding block shaft is locked in a self-locking device; the self-locking device is arranged on the outer side surface of the first drawplate; the inner side surfaces of the first drawplate and second drawplate are connected with a bracket; the bracket is connected with a drive unit linear stepping motor; one end of the first drawplate is connected with one end of the second drawplate through an axis pin; and the other ends of the first drawplate and second drawplate are hinged with the tong pieces. The device has the advantages of simple structure, small opening force, convenient operation, safe and reliable operation, accurate unhooking landing point and favorable centering performance, and can be remotely controlled.

Description

technical field [0001] The invention relates to a hook of a lifting and pulling device, in particular to a clamp-type hook automatic decoupling device, which belongs to the technical field of mechanical lifting and pulling devices. Background technique [0002] The hook used to connect the load in the lifting traction mechanism is very convenient when loading, but it is more troublesome when unloading. As an improved form of the hook, the commonly used decoupling device has two basic forms: clamp type and single hook flip type. The single-hook flip-type decoupling device will generate lateral force when decoupling, causing the decoupling device to swing violently after decoupling. After the heavy object is decoupled, it is easy to cause space drift, the landing point position is inaccurate, and the neutrality is relatively poor. It is mainly used for heavy objects. Occasions where the position of the landing point is not high. Chinese patent document CN92223321.7 discloses ...

AI Technical Summary

Problems solved by technology

The single-hook flip-type decoupling device will generate lateral force when decoupling, causing the decoupling device to swing violently after decoupling. After the heavy object is decoupled, it is easy to cause space drift, the landing point position is inaccurate, and the neutrality is relatively poor. It is mainly used for heavy objects. Occasions where the position of the landing point is not high

Chinese patent document CN92223321.7 discloses an automatic uncoupling device, which belongs to the single-hook flip type uncoupling device, which improves the sensitivity of decoupling and overcomes the space drift caused by the decoupling of heavy objects, but the safety performance is not high

Chinese patent document CN87209663 discloses a load and unloading uncoupling device, which belongs to the pincer type uncoupling device. The technical scheme is simple in structure, and it is indeed better when the requirements for the unloading position are not high, but it is inconvenient to operate and the safety performance is not good. High, it is not suitable for applications such as test detection and other fields that require high neutrality

In short, the current decoupler still has the problems of inconvenient operation, difficult remote control, poor safety, and inaccurate unloading position.

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