Fast unfolding and locking mechanism for foldable working ladder

A technology of locking mechanism and folding ladder, which is applied in the direction of ladders, building structures, buildings, etc. It can solve the problems of poor stability, shaking of the ladder frame, and gaps, etc., and achieve the effect of convenient and fast unfolding and folding, and easy to use

Inactive Publication Date: 2013-01-02
XIAN AIRCRAFT IND GROUP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The problem existing in the prior art is that there may be a gap at the pin hole where the quick release pin is used to fix the ladder frame

Method used

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  • Fast unfolding and locking mechanism for foldable working ladder
  • Fast unfolding and locking mechanism for foldable working ladder

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0010] Referring to the drawings, the quick opening and locking mechanism of the foldable working ladder includes an upper ladder joint 1 and a lower ladder joint 4. In order to facilitate the folding of the working ladder, the outer end of the lower ladder joint 4 can be inserted into the port of the upper ladder joint 1. The outer ends of the ladder joint 1 and the lower ladder joint 4 are hinged through the first pin shaft 6, a stop pin 5 parallel to the first pin shaft is arranged on the upper ladder joint 1, and a stop pin 5 parallel to the first pin shaft is arranged on the lower ladder joint 4. A second pin 7 with parallel pins, and another rigid trigger 3 is fixed on the second pin 7, one end of the trigger 3 is connected to the first pin 6 through a tension spring 2, and the other end of the trigger 3 is provided with a cam Type card slot, the card slot can be snapped on the stopper pin 5.

[0011] In use, the upper ladder joint 1 and the lower ladder joint 4 of the a...

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PUM

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Abstract

The invention provides an unfolding and locking mechanism capable of fast unfolding and folding a working ladder. The outer side ends of an upper step joint and a lower step joint are hinged by using a first pin shaft; a stopping pin parallel to the first pin shaft is arranged on the upper step joint; a second pin shaft parallel to the first pin shaft is arranged on the lower step joint; in addition, one rigid trigger is fixed on the second pin shaft, wherein one end of the trigger is connected to the first pin shaft by a tension spring, while the other end is provided with a cam-type slot which is likely to be blocked on the stopping pin.

Description

technical field [0001] The invention relates to a foldable working ladder, in particular to a quick opening and locking mechanism for a foldable working ladder. Background technique [0002] In the use and maintenance work such as inspection, installation, commissioning, and climbing, in order to meet the needs of work in a higher use environment and work ladder storage and transportation, the work ladder needs to be unfolded and folded frequently. In the prior art, the folding and unfolding of the ladder mainly adopts a hinged structure. When unfolding, first open the quick-release brake pins, stretch the upper and lower ladder frames on both sides, and ensure that the end faces of the two joints of the ladder frame fit together, and then insert the quick-release brake pins into the holes of the ladder frame joints respectively to confirm the quick release. It can only be used after the detent pin is inserted. When folding, first pull out the quick-release brake pin, and ...

Claims

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Application Information

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IPC IPC(8): E06C7/50
Inventor 谢立一王永玉靳晓明
Owner XIAN AIRCRAFT IND GROUP
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