A kind of fork type flexible weight double limit device

Abstract

The invention relates to a poking fork type flexible heavy-hammer double-limiting device. The device comprises a fixed plate A; a fixed plate B is arranged on the lower side of the fixed plate A; a switch A is arranged at the upper part of the fixed plate B; a hinge shaft is arranged at the right part of the fixed plate B, and is connected with a poking fork; a collision block A is arranged on the upper side of the right part of the poking fork; a collision block B is arranged on the lower side of the left part of the poking fork; a switch B is arranged at the lower part of the fixed plate B; a hole is formed in the fixed plate B; an extension rod is arranged at the right part of the poking fork; a chain is arranged on the lower side of the extension rod; and a heavy hammer is arranged at the lower end of the chain. The poking fork type flexible heavy-hammer double-limiting device has the advantages of reasonable structure, convenience for use and high safety.

Description

technical field [0001] The invention belongs to the technical field of hoisting equipment, and in particular relates to a limit device, in particular to a fork-type flexible weight double limit device. Background technique [0002] With the development of social economy, cranes are used more and more in social production practice. Cranes are a kind of machinery with cyclical and intermittent movements. Because cranes often lift heavy objects, the safety of cranes is very important. Generally, on cranes They are all equipped with a limit device to prevent the lifting equipment from rushing to the top. A typical weight limit device includes a limit switch, a pull rope and a weight to protect the rising limit. This method generally only guarantees the lifting limit. The lowering limit cannot be guaranteed. In use, the hook often touches other objects or even the ground due to the lack of a lowering limit, causing unnecessary economic losses or even personal injuries. Therefore,...

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Problems solved by technology

[0002] With the development of social economy, cranes are used more and more in social production practice. Cranes are a kind of machinery with cyclical and intermittent movements. Because cranes often lift heavy objects, the safety of cranes is very important. Generally, on cranes They are all equipped with limit devices to prevent the lifting equipment from rushing to the top. A typical weight limit device includes a limit switch, a pull rope and a weight to protect the rising limit. This method generally only guarantees the lifting limit. The lowering limit cannot be guaranteed. In use, the hook often touches other objects or even the ground due to the lack of a lowering limit, causing unnecessary economic losses or even personal injuries. Therefore, it is necessary to provide a It is very necessary to have a double limit device with high performance fork type flexible weight

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