Steel structure building stair capable of switching feeding surfaces

Abstract

The invention discloses a steel structure building stair capable of switching feeding surfaces. The stair comprises a plurality of steel structure stair units, the plurality of steel structure stair units are sequentially arranged in a height reduction manner from left to right; and based on each steel structure stair unit, a fixed shaft, a horizontal stair plate and a vertical stair plate are included, the fixed shaft is symmetrically sleeved by two horizontal sleeve blocks, the horizontal sleeve block is rotationally connected with the fixed shaft, and the upper end of the right side of thehorizontal sleeve block is fixedly connected with the horizontal stair plate, two vertical sleeve blocks are arranged between the two horizontal sleeve blocks on the fixed shaft in a sleeved mode androtationally connected with the fixed shaft, and the vertical stair plate is fixedly connected to the left sides of the upper ends of the vertical sleeve blocks. According to the invention, only a damaged structure needs to be simply replaced, and the building stair can continue to be used and is very simple; therefore, one-time operation does not need to be carried out on the whole structure whenswitching is carried out each time, and the step type or inclined plane type switching is more labor-saving and more convenient.

Description

technical field [0001] The invention relates to the technical field of building steel structures, in particular to a steel structure building staircase with switchable feeding surfaces. Background technique [0002] In the prior art, a stepped and sloped staircase with the application number "201720925181.8" is composed of a frame, an eccentric shaft, a conversion table belt, etc.; It is welded; there are a pair of through holes and multiple pairs of pin slots on the front facade of the angle iron, and a horizontal long hole is opened at the tail; In the frame, in order to prevent the thrust dead point from appearing in the transition table belt, the eccentric shaft under it is used for adjustment. When inclined stairs are required, the tail of the end riser can be removed from the long bar hole, and the end riser can be pulled down to make it horizontal; when stepped stairs are required, the end riser can be pushed up, and its tail can be inserted into the bar inside the ...

AI Technical Summary

Problems solved by technology

[0003] But above-mentioned this step type, inclined-plane type can convert each other stair in use process, still there is following comparatively obvious defect: 1, top panel, riser, panel, end riser are all formed by rotating in series through bearing pin The conversion table belt is placed in the frame through the connection between the top coupling pin and the through hole. Therefore, due to the conversion table belt formed in series, when the overall structure is switched to a stepped or inclined plane, the overall structure needs to be operated. Instead of switching each part separately, the operation becomes very cumbersome, and once any part fails or is damaged, the series setting makes the entire conversion table belt unusable; 2. If a sloped floor is required, people The tail of the tail riser can be removed from the long hole of the frame, and the tail riser can be pulled down to make it horizontal; if a stepped staircase is needed, people have to push the tail riser, and then put the tail end The tail of the end riser is inserted into the elongated hole of the frame. Therefore, when switching, it is necessary to manipulate the end end riser, and there are other structures connected in series above the end riser, which consumes more energy when switching. Big force, very troublesome

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