Torque limitation alarm device for straight-arm-type lorry-mounted crane

Abstract

The invention discloses a torque limitation alarm device for a straight-arm-type lorry-mounted crane and belongs to the technical field of the torque limitation alarm of straight arm type lorry-mounted cranes. The torque limitation alarm device for the straight arm type lorry-mounted crane can automatically give an alarm and limit action when the straight arm type lorry-mounted crane is under an overload working state. The technical scheme adopted by the torque limitation alarm device for the straight arm type lorry-mounted crane is as follows: the signal output ends of an overwinding sensor, a length angle sensor and a shaft pin sensor are all connected with the input port of a gravitational torque limiter host; the gravitational torque limiter host is connected with an electrical appliance control box; the electrical appliance control box is connected with an electronic control valve; and a lorry-mounted crane control receiver is respectively connected with a lorry-mounted crane control operation box and the electronic control valve. The torque limitation alarm device for the straight-arm-type lorry-mounted crane is applied to the lorry-mounted crane and an automobile crane.

Description

technical field [0001] The invention relates to a moment limit alarm device for a straight-arm type truck-mounted crane, which belongs to the technical field of moment limit alarm for straight-arm type truck-mounted cranes. Background technique [0002] At present, straight-arm truck-mounted cranes are widely used, but overload problems will inevitably occur due to factors such as the environment or operators during use. Some manufacturers solve the overload problem by increasing the safety factor of the crane arm, but this way In fact, it will form a large ton and small standard for lifting goods, which reduces the loading quality of the truck-mounted crane. Some manufacturers solve the overload problem by installing a torque limiter; the general torque limiter ensures reliable transmission of detection signals. Only the main unit of the lifting moment limiter is installed on the basic arm. When overloading and releasing the limit, the operator needs to be close to the main...

AI Technical Summary

Problems solved by technology

[0002] At present, straight-arm truck-mounted cranes are widely used, but overload problems will inevitably occur due to factors such as the environment or operators during use. Some manufacturers solve the overload problem by increasing the safety factor of the crane arm, but this way In essence, it will form a large ton and small standard for lifting goods, which reduces the loading quality of the truck-mounted crane. Some manufacturers solve the overload problem by installing a torque limiter; the general torque limiter ensures reliable transmission of detection signals. Only the main unit of the lifting moment limiter is installed on the basic arm. When overloading and releasing the limit, the operator needs to be close to the main unit of the lifting moment limiter to observe the alarm information and perform the operation of releasing the limit. convenient and not safe

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