A kind of anti-falling device of screw nut type building scaffolding

Abstract

The invention discloses an anti-falling device of a screw and nut type building scaffold. The device comprises a screw, a nut, an anti-falling frame and a spring. The nut is arranged in the anti-falling frame, the upper portion of the nut is provided with the spring, the screw penetrates through the anti-falling frame, the nut and the spring, the upper end face of the nut is provided with a tooth-shaped groove, and the inner surface of an upper plate of the anti-falling frame is provided with a tooth-shaped boss. By means of the nut and the screw with a large lead angle, the nut can ascend and descend automatically when the anti-falling frame ascends and descends at a proper speed, and the nut is prevented from being locked. When ascending speed exceeds the largest ascending speed of the nut, the nut will limit ascending of the scaffold. When descending speed reaches a set safety value of the nut, the nut compresses the spring, the tooth-shaped groove in the upper end face of the nut is matched with the tooth-shaped boss on the inner wall of the upper plate of the anti-falling frame, and accordingly the anti-falling frame is locked and the scaffold is prevented from falling. The anti-falling device is easy and convenient to operate, simple in structure and worthy of application and popularization.

Description

technical field [0001] The invention belongs to the technical field of building safety measures, and in particular relates to a screw nut type building scaffold anti-falling device. technical background [0002] The attached lifting scaffold can be attached to the engineering structure, and relying on its own lifting equipment and devices, it can climb or descend with the engineering structure layer by layer, turning high-altitude operations into low-altitude operations, which not only speeds up the project progress, but also saves a lot of time. The material is beautiful and tidy, with a high safety factor and fast construction speed; because the scaffold needs to be continuously raised and lowered in height, it needs to be separated from the support during the lifting process, and it is lifted and lowered by the lifting mechanism to achieve its construction position requirements. The safety during this period needs to be guaranteed by the anti-fall frame; a kind of accesso...

AI Technical Summary

Problems solved by technology

The static toothed plate is set on the part of the brake shaft close to the shoulder, and the center hole and the brake shaft are in clearance fit; the center hole of the movable toothed plate is threaded, which is matched with the thread on the brake shaft; although it has a certain degree of anti-fall effect, but its structure is complicated, the construction operation is complicated, and the cost is high; in CN103061497A, a working condition self-adaptive scaffold lifting and anti-falling device is disclosed, which includes a scaffold lifting mechanism, a lever-type linkage mechanism and an anti-falling mechanism, The scaffold lifting mechanism, linkage mechanism and anti-falling mechanism are arranged on the frame, and the bolt holes connected with the scaffold frame are arranged at the bottom of the frame, and the scaffold lifting mechanism is connected to the anti-falling mechanism through the linkage mechanism. The upper part of the falling mechanism is connected to the outer wall; although it plays the role of preventing falling, it is easy to pinch the suspender, making its deformation affect its reuse, and the structure is complicated, so a device with a simple structure and good falling preventing effect is needed

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