Combined balance beam mechanism of crane

Abstract

The invention belongs to the technical field of hoisting machinery and in particular relates to a combined balance beam mechanism of a crane. The combined balance beam mechanism of the crane comprises a balance beam, limit switches, a support, a hinge pin I, a pressure type load sensor, a lever, a hinge pin II, a connector, a hinge pin III, a mounting platform and steel wire rope fixing joints, wherein the balance beam is connected with the connector by the hinge pin III and can rotate around the hinge pin III; the two steel wire rope fixing joints are symmetrically connected at the lower end of the balance beam, and steel wire ropes are respectively fixed on the steel wire rope fixing joints; the limit switches are arranged at two sides of the balance beam, the connector is connected with one end of the lever by the hinge pin II, the other end of the lever is connected with the support by the hinge pin I, and the middle point of the lever is pressed on a sensing point of the pressure type load sensor, and the pressure type load sensor and the support are fixed on the mounting platform. According to the combined balance beam mechanism of the crane, the load sensor and the balance beam mechanism are combined by the lever principle, and the safety reliability of the load detection mechanism can be improved.

Description

technical field [0001] The invention belongs to the technical field of hoisting machinery, and in particular relates to a combined balance beam mechanism of a crane. Background technique [0002] In the hoisting mechanism of a crane, when a double-set wire rope system is used, a balance beam mechanism must be used to balance the length error between the two sets of wire ropes and ensure that the wire ropes are evenly stressed. For important hoisting mechanisms, it is necessary to monitor and protect the tension of the wire rope, such as figure 1 As shown, the traditional design generally uses a tension load sensor, and the load protection mechanism is arranged in series with the balance beam mechanism. However, as a key load path, the load sensor structure is not allowed to break and fail, otherwise the lifting weight may fall, which will weaken the load. The safety of the double-set wire rope system is guaranteed. Contents of the invention [0003] The object of the pre...

AI Technical Summary

Problems solved by technology

For important hoisting mechanisms, it is necessary to monitor and protect the tension of the wire rope, such as figure 1 As shown, the traditional design generally uses a tension load sensor, and the load protection mechanism is arranged in series with the balance beam mechanism. However, as a key load path, the load sensor structure is not allowed to break and fail, otherwise the lifting weight may fall, which will weaken the load. Ensure the safety of the double wire rope system

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