Anti-falling lifting type scaffold

Abstract

The invention relates to an anti-falling lifting type scaffold, and belongs to the technical field of building construction. The scaffold comprises a scaffold body fixedly connected with an anti-falling ladder rail; the anti-falling ladder rail is composed of a pair of vertical anti-falling rods crossed through the anti-falling device and a ladder rod fixed between the vertical anti-falling rods; the anti-falling device includes a supporting base, the supporting base supports a horizontal fixing shaft moveably sleeved with a spider gear, the spider gear is meshed with the ladder rod of the anti-falling device; the middle part of a fixing shaft is provided with a key groove penetrated in vertical direction, and a lock key is mounted in the key groove; the inner hole of the spider gear is provided with an interval ratchet hollow, and the interval ratchet hollow consists of a declining locking end and a curve transition section; the upper end of the lock key is provided with a pawl head, and the lower end of the lock key is provided with a contact head; when the pawl head is corresponding to the locking end, the contact head is corresponding to the transition section; when one of the pawl head and the contact head is extended out of the key groove, and the other one is returned to the key groove. The anti-falling lifting type scaffold ingeniously uses the gravity and weight loss, so that the pawl can play the locking function in the course of rapidly dropping. Therefore, the anti-falling performance is always stable and reliable even after using for a long time.

Description

technical field [0001] The invention relates to an elevating scaffold for building construction, in particular to an anti-falling elevating scaffold, which belongs to the technical field of building construction. Background technique [0002] In order to ensure construction safety, the lifting scaffolds in construction generally adopt anti-falling devices. For example, Chinese patents with application numbers 200980000197.6, 201210105256.X, and 201210267615.1 respectively disclose several anti-falling devices. However, these devices are not suitable for fall protection of elevating scaffolds. [0003] The search found that the Chinese patent application number 200810068257.5 discloses a fall prevention device. The device includes a guide seat connected to a slide sleeve of the guide rail. Interval cross bars are arranged on the guide rail. The anti-falling positioning wheel is provided with a clutch device between the wheel body of the anti-falling positioning wheel and th...

AI Technical Summary

Problems solved by technology

Although this device is suitable for lifting scaffolding, its clutch device draws on the structure of overrunning clutch, and it usually needs to install elastic parts to ensure self-locking during impact movement. The wear of the friction surface of the lock makes it difficult to maintain the original anti-drop performance

Therefore, the lifting scaffold equipped with this device will inevitably have potential safety hazards after long-term use

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