Overhead hoist for demolition blasting of large-sized bridge

Abstract

The invention discloses an overhead hoist for demolition blasting of a large-sized bridge. The overhead hoist comprises a bottom plate, four sets of vertical columns are perpendicularly arranged at the top of the bottom plate, a top plate is perpendicularly connected to the ends, away from the bottom plate, of the four sets of vertical columns, a guardrail is arranged between the ends, close to the bottom plate, of every two adjacent sets of vertical columns, a buffer plate is arranged on the side, away from the guardrails, of the bottom plate, four sets of supporting rods are arranged on theside, close to the bottom plate, of the buffer plate, telescopic channels matched with the four sets of supporting rods are formed in the bottom plate, and the bottoms of the telescopic channels are connected with the supporting rods through springs. A central groove is formed in the side, close to the buffer plate, of the bottom plate, a gravity sensor is arranged at the center of the bottom of the groove, two sets of adjusting devices are arranged in the groove, and each adjusting device comprises a fixing plate, a rotating screw rod, a balancing weight and a sliding rod. The overhead hoistis simple in structure, and can effectively ensure the stability after a hanging basket is hoisted, thus the hanging backset is prevented from tilting, meanwhile, the borne impact force is relieved when a sudden falling emergency situation occurs, and the safety of working personnel is protected.

Description

technical field [0001] The invention relates to the field of hoisting devices, in particular to a hoisting device used for blasting demolition of large bridges. Background technique [0002] Bridge structures will inevitably have various quality problems in the long-term operation and use of bridge engineering, and even seriously affect the normal use of the bridge, or when the bridge is severely damaged by emergencies during use, it is necessary to repair It was demolished and rebuilt. Blasting is a commonly used method in bridge demolition engineering. [0003] During the demolition process of bridge blasting, it is necessary to hoist and remove the exploded bridge disassembled body. In order to facilitate the operation and improve the safety of the operation during hoisting, a hoisting device is used to hoist tools and operators during the demolition process. During operation, the hanging basket may be tilted, posing a threat to the safety of workers. Therefore, we have...

AI Technical Summary

Problems solved by technology

[0003] During the demolition process of bridge blasting, it is necessary to hoist and remove the exploded bridge disassembled body. In order to facilitate the operation and improve the safety of the operation during hoisting, a hoisting device is used to hoist tools and operators during the demolition process. During operation, the hanging basket may be tilted, which will pose a threat to the safety of workers. Therefore, we have designed a lifting device for blasting demolition of large bridges to solve the above problems

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