Lifting type climbing ladder

Abstract

The invention relates to a lifting type climbing ladder, which comprises a first climbing ladder body, at least one pair of connecting mechanisms and a second climbing ladder body, wherein the first climbing ladder body comprises a first end; the at least one pair of connecting mechanisms is respectively arranged at the two sides of the first climbing ladder body; each connecting mechanism comprises a support seat and a connecting rod element; the support seat is used for fixing the preset fixing position; the support seat is provided with a position limiting part; one end of the connecting rod element is movably connected with one end of the support seat, and can rotate and/or slide relative to the support seat; the other end of the connecting rod element is rotationally connected with the first climbing ladder body; when the connecting rod element rotates to the preset position, the connecting element is clamped and fixed with the position limiting part; one end of the second climbing ladder body is movably connected with the first end of the first climbing ladder body, and can rotate or/and slide relative to the first climbing ladder body; the second climbing ladder body is provided with a locking mechanism capable of being fixed with a ground sill. The lifting type climbing ladder can be arranged in a hoistway bottom pit with small dimension; operators can conveniently go in or go out of the bottom pit.

Description

technical field [0001] The invention belongs to the technical field of elevators, and particularly relates to a climbing ladder, in particular to a pull-type climbing ladder installed in an elevator shaft for safe entry and exit from a bottom pit. Background technique [0002] The pit ladder device of traditional elevators is a special device for operators to safely enter and exit the pit. In the prior art, when the ladder is arranged on the inner wall of the well on the side of the landing door, the well space required by some elevators is relatively small. Large, personnel may still not be able to safely touch the floor door lock device through the ladder, making it difficult for personnel to leave the pit. [0003] According to the current competition trend of the elevator market, the size of the elevator shaft and the depth of the pit are required to be as small as possible, so that the arrangement of the elevator components in the shaft is as compact as possible, so som...

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Problems solved by technology

[0002] The pit ladder device of traditional elevators is a special device for operators to safely enter and exit the pit. In the prior art, when the ladder is arranged on the inner wall of the well on the side of the landing door, the well space required by some elevators is relatively small. Large, personnel may still not be able to safely touch the floor door lock device through the ladder, making it difficult for personnel to leave the pit

[0003] According to the current competition trend of the elevator market, the size of the elevator shaft and the depth of the pit are required to be as small as possibl

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