Armrest seat of subway escape and evacuation platform

Abstract

The invention discloses an armrest seat of a subway escape and evacuation platform, which comprises a fixed seat (1), a first transverse plate (5), a first vertical plate (9), an upper transverse plate (2), a round sleeve (4) with an opening, a lower transverse plate (3) and a lower vertical plate (6), wherein the fixed seat (1), the first transverse plate (5), the first vertical plate (9), the upper transverse plate (2), the round sleeve (4) with the opening, the lower transverse plate (3) and the lower vertical plate (6) are sequentially connected into a whole, the upper end of the lower vertical plate (6) can be tightly abutted against the connected part of the first transverse plate (5) and the first vertical plate (9), holes (7) which have corresponding positions and are used for bolts to penetrate are all arranged on the upper transverse plate (2) and the lower transverse plate (3), an expansion bolt through hole (8) is arranged on the fixed seat (1), and the fixed seat (1), thefirst transverse plate (5), the first vertical plate (9), the upper transverse plate (2), the round sleeve (4) with the opening, the lower transverse plate (3) and the lower vertical plate (6) are all metal parts with the same thickness. The armrest seat has low manufacturing cost.

Description

technical field [0001] The invention relates to the field of urban traffic, in particular to an armrest seat on which an armrest bar is installed on a subway escape and evacuation platform. Background technique [0002] At present, due to factors such as large passenger flow, poor tunnel escape conditions, long escape distance, and short escape time in urban subways, once a fire occurs, it is very easy to cause a vicious accident involving mass death and mass injury. Setting up an escape and evacuation platform is an effective way to alleviate fire accidents in the subway. For safety reasons, a handrail bar extending along the length of the tunnel must be set above the escape and evacuation platform at a height suitable for human grasping, and a handrail bar is installed and fixed at a certain distance such as 1.5 meters on the handrail bar. Armrest seats on tunnel walls. [0003] Such as figure 1 The handrail seat of the traditional subway escape and evacuation platform ...

AI Technical Summary

Problems solved by technology

[0005] The armrest seat of the subway escape and evacuation platform of the above prior art has the following defects: first, because the armrest seat is made of glass fiber reinforced plastics, the armrest seat of this material can only be made by a molding process, and the metal mold cost of the molding process is very high. It costs several thousand yuan to open a set of metal molds, so the manufacturing cost is high; secondly, the strength and hardness of FRP are not ideal. It is very thick, so it is bound to consume more materials and further increase the cost, and a plurality of armrest seats are required in a tunnel, and these armrest seats are superimposed, which consumes a huge amount of material; again, two sets of expansion bolt assemblies are required to fix one armrest seat (generally Including countersunk head bolts, expansion tubes, flat washers, spring washers and hexagon nuts), this requires drilling two expansion bolt holes on the tunnel wall, and all the armrest seats in a tunnel are superimposed, and the number of expansion bolt assemblies consumed is large , and the punching process is time-consuming, cumbersome and inconvenient

Images