Mechanical anti-swing bridge crane for hoisting bundled round steel

Abstract

A mechanical anti-swing bridge crane for hoisting bundled round steel relates to the technical field of cranes, and comprises a crane bridge frame and a hoisting mechanism which is mounted at the top of the crane bridge frame and is used for hoisting the bundled round steel, and further comprises a hydraulic telescopic device and a rotary lifting appliance for hanging the bundled round steel; the rotary lifting appliance which is correspondingly connected with the hoisting mechanism is arranged below the crane bridge frame; the hoisting mechanism comprises winding drums which are arranged at the two ends of the top of the crane bridge frame and are synchronously driven by the same driving motor, and two steel wire ropes are synchronously wound on drum bodies of the two winding drums; the rotary lifting appliance is provided with four movable pulley blocks corresponding to the four steel wire ropes respectively; and the crane bridge frame is provided with four fixed pulley blocks corresponding to the four movable pulley blocks respectively; and the lifting operation efficiency is high, and meanwhile the phenomenon that the rotary lifting appliance shakes in the transfer process of the rotary lifting appliance can be avoided.

Description

technical field [0001] The invention relates to the technical field of cranes, in particular to a mechanical anti-sway bridge crane used for lifting bundled round steel. Background technique [0002] At present, in the field of heat treatment and quenching of domestic bundled round steel, there are hot, dirty, tired, and stupid current conditions that are very prominent; workers use tools to take workpieces out of the furnace, which is not only inefficient, but also often wastes a lot when the number of workpieces is large. Time is also accompanied by a higher safety risk; in addition, because the bundled round steel is usually long in size, it is easy to swing during the transfer process by the crane, and even the bundled round steel drives the crane trolley to swing, which has a greater safety hazard. This phenomenon is a problem to be solved urgently by those skilled in the art; [0003] Chinese patent (notification number: CN110407110A) discloses a special crane for pip...

AI Technical Summary

Problems solved by technology

[0002] At present, in the field of heat treatment and quenching of domestic bundled round steel, there are hot, dirty, tired, and stupid current conditions that are very prominent; workers use tools to take workpieces out of the furnace, which is not only inefficient, but also often wastes a lot when the number of workpieces is large. Time is also accompanied by a higher safety risk; in addition, because the bundled round steel is usually long in size, it is easy to swing during the transfer process by the crane, and even the bundled round steel drives the crane trolley to swing, which has a greater safety hazard. This phenomenon is a problem to be solved urgently by those skilled in the art;

[0003] Chinese patent (notification number: CN110407110A) discloses a special crane for pipe piles. In this patent, a telescopic anti-sway mechanism is fastened between the bridge frame and the suspension beam. However, because the two ends of the telescopic anti-sway mechanism are respectively fastened to the bridge frame and the suspension beam, the verticality of the guide sleeve and the guide column is relatively high, and the assembly is difficult, otherwise the guide There is a risk of jamming the sleeve and guide post during use;

[0004] Chinese patent (notification number: CN201753243U) discloses a fine-tuning device for the wire rope of the CDQ hoist spreader. The wire rope of this patent is connected to the screw through a wedge sleeve, and the screw passes through a small beam and is threaded with a nut, and the screw is adjusted through the nut. To achieve the purpose of fine-tuning the length of the wire rope; during the operation of the crane, the wire rope will drive the screw to swing, causing frequent friction and collision between the screw and the small beam, resulting in damage to the screw thread, and subsequent fine-tuning needs to replace the screw again. The operation steps are cumbersome and the efficiency of wire rope length adjustment is low

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