Ramp apparatus

Abstract

The invention provides a gangway device, which can keep the level of the step from being affected by soil, small stones and dust, always smoothly and stably, and can keep the handrail at a certain height. The two end shafts of these pedals (3) are supported between two sets of trusses composed of upper chord members (1) and lower chord members (2) arranged in parallel, so that multiple pedals (3) are horizontal; these upper chords can be adjusted and maintained One end of the connecting rod for adjusting the distance between the member (1) and the lower chord member (2) is supported on one of the upper chord member (1) and the lower chord member (2), and on the other of the upper chord member and the lower chord member. A position fixing member (9) is provided to fix the other end of the adjustment link at a position of a prescribed length; an armrest socket (3A) is installed perpendicularly to the side end surface of the pedal (3). ; Moreover, the socket (3A) is provided with an anti-loosening mechanism to prevent the support (23) of the armrest (22) from loosening.

Description

technical field [0001] The present invention relates to a gangway device that is used, for example, when a worker climbs up and down in a construction site such as a construction site, and is placed obliquely between the ground and a high place of work. Background technique [0002] On construction sites, workers use gangway devices to climb up and down a high work site. This gangway device is structured such that a plurality of steps are erected between a pair of left and right chord members along their lengthwise direction. [0003] However, in the conventional gangway device, since the pedals are fixedly attached to the chord members, when the gangway device, that is, the chord members, is erected at a high work site at an angle different from the usual one according to the conditions of the work site, the pedals are not horizontal, and there is a certain problem. Angle of inclination. In such a case, the foot is likely to slip on the pedal, and there is a possibility o...

AI Technical Summary

Problems solved by technology

[0005] However, since the brake parts used to keep the pedals horizontal in this prior art gangway device are arranged at the lower ends of each truss, there is a possibility of rusting easily when the grounding plate is placed on the ground or the like when it is exposed to moisture, and due to soil Or the entry of small stones will hinder the mutual movement of the brake parts and string members, and the gangway device is not easy to use

[0006] Moreover, the gangway device of the prior art is provided with handrails in most cases. Since it is directly fixed on the upper chord member at this time, as the angle of the upper chord member changes, the angle of the handrail also changes. Problems keeping the height of the pedals at a certain level

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