Machine lifting tool for automatically grabbing and releasing goods

Abstract

The invention discloses a machine lifting tool for automatically grabbing and releasing goods. The machine lifting tool comprises horizontal guide rails, wherein the two ends of the horizontal guide rail are provided with flexible trolleys, the bottom parts of the flexible trolleys are provided with embracing arms for grabbing the goods, and the top parts of the flexible trolleys are provided with hinged supports; a counterweight disc is arranged above the horizontal guide rail, the top of the counterweight disc is provided with lifting rings, the two sides arranged below the counterweight disc are provided with lifting lugs, and the lifting lugs and one of the hinged supports corresponding to the lifting lug are respectively hinged with the two ends of connecting rods; and a limiting device is also arranged among the horizontal guide rails and the counterweight disc, the limiting device is mainly composed of parts such as a rotating rod, a tooth form sleeve sleeved on the rotating rod, a wedge-shaped block nested on the rotating rod, a middle shell, an arc-like block arranged in the middle shell as well as return springs. Labour and an external power device are not needed, the limiting device only depends on the self gravity control so as to carry out self locking and unlock, namely, the goods are automatically grabbed and released, the machine lifting tool is particularly suitable for operators which can not achieve harsh environments such as high temperature, high wet and radiation and narrow places of the lifting spaces.

Description

technical field [0001] The invention relates to a cargo hoisting device, in particular to a mechanical hoist that can automatically grab and release cargo. Background technique [0002] In many practical projects, the lifting of goods requires the use of spreaders to firmly grasp and release goods. Most of the traditional lifting tools complete these two actions with manual assistance, which has high labor intensity, low work efficiency, and many safety hazards, which have become the short board of hoisting operations, and will affect the entire project process in severe cases. In order to solve the above problems, those skilled in the art have designed various forms of external power devices, such as pneumatic cylinders, hydraulic cylinders, motors, screw rods, electromagnets, etc., to replace manual completion of these two actions by using them with the spreader. Although these external power devices effectively overcome the defects of traditional spreaders, they also hav...

AI Technical Summary

Problems solved by technology

Although these external power devices effectively overcome the defects of traditional spreaders, they also have the disadvantages of complex assembly structure, high requirements for the working environment, large requirements for operating space, and short maintenance and repair cycles, resulting in shorter service life and lower hoisting operation costs. increase

Especially in harsh environments such as high temperature, high humidity, radiation, etc. and / or occasions where the hoisting space is narrow, the above defects or deficiencies are more obvious

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