Backward inclining prevention device of stay-rope-type cantilever crane

Abstract

The invention discloses a backward inclining prevention device of a stay-rope-type cantilever crane. The backward inclining prevention device of the stay-rope-type cantilever crane comprises a disc spring device, a stay rope, a horizontal rod and an inclined rod, wherein the top of the disc spring device is hinged with the lower part of a cantilever crane; one ends of the horizontal rod and the inclined rod are respectively hinged with the front end of a drilling crew; the other ends of the horizontal rod and the inclined rod are hinged mutually to form a stable tripod structure; the upper end of the stay rope is hinged with the bottom of the disc spring device; the lower end of the stay rope is hinged with the hinged point of the horizontal rod and the inclined rod. According to the invention, hinged-type connection is adopted, the device and the cantilever crane are not separated away in the whole amplitude variation process; when the amplitude draws in to be a certain small amplitude, the compressed disc spring is tensioned by the stay rope, so that a balancing effect is achieved; the technical problem that a backward inclining prevention effect can only be realized when a stay bar head reliably enters a bearing seat is solved. The stress is that a chord rod is pressed and a web membrane is pulled relative to the cantilever crane, without improving the intensity and the rigidity of the cantilever crane specifically, thereby improving the safety, and overcoming the defect that a stay-bar-type device is possibly required to be reinforced partially.

Description

technical field [0001] The invention relates to a safety device for hoisting equipment, in particular to a cable-type boom anti-tilt device, which belongs to the technical field of crane manufacturing. Background technique [0002] There are two types of hoisting and luffing mechanisms for cranes using wire ropes: one is the luffing mechanism in which the lifting hook moves up and down with the change of the working range of the jib, which is called the auxiliary luffing mechanism; the other is the lifting hook that can The luffing mechanism that moves approximately horizontally with the change of the working range of the boom is called the working luffing mechanism. The approximate horizontal movement of the hook of the working luffing mechanism is realized by means of timely compensation and retraction of a certain length of hoisting rope by the hoisting rope. Therefore, a reverse force is naturally formed during the luffing process, so that Tilting, especially when the s...

AI Technical Summary

Problems solved by technology

The invention adopts articulated connection, and there is no disengagement of the device and the boom during the whole luffing process. When the luffing reaches a certain small range, the tensioned and compressed disc spring of the cable starts to play a balancing role, which solves the problem of bracing. The technical problem that the rod head must reliably enter the support seat to prevent backward tilt

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