Tunnel side wall reinforcement locator and locating method

Abstract

Provided is a positioner for reinforcing steel bars of tunnel side wall. At least two groups of reinforcing steel bar positioning arm mechanisms are provided on the same side of an inverted trestle (4). The reinforcing steel bar positioning arm mechanism comprises a large arm (1), a medium arm (2) and a small arm (3). The large arm (1) is driven by a first telescopic cylinder (7) to rotate around a hinge point, such that the large arm (1) implements rotation in the horizontal direction. The medium arm (2) is composed of three second telescopic cylinders (8) in a Z-shaped arrangement in the vertical plane, such that the small arm (3) implements rotation or expansion in the vertical plane. Two arm rods of the small arm (3) are each provided with a third telescopic cylinder (9) to implement the expansion of the arm rod, and a forth telescopic cylinder (10) is provided between inner side ends of the two arm rods. The small arms (3) of the two groups of the reinforcing steel bar positioning arm mechanisms on the same side are connected to each other through four positioning rods (5), two of the positioning rods (5) are vertically arranged at an interval on the inner side of the small arm (3), and the other two positioning rods (5) are vertically arranged at an interval on the outer side of the small arm (3), with several positioning clamps (6) being fixedly distributed at intervals on each positioning rod (5). The inner layer and outer layer reinforcing steel bars of the side wall can be subjected to three-dimensional positioning at the same time, and in particular, side wall reinforcing steel bars with different heights can be positioned in one process.

Description

technical field [0001] The invention relates to tunnel support equipment, in particular to a positioning equipment and a positioning method for steel bars of tunnel side walls. Background technique [0002] During the construction of tunnel lining, it is very difficult to locate the steel bars during the binding process of the side wall steel bars, and it is impossible to accurately locate the steel bars in three dimensions. Often, the spacing between the steel bars is large or small, the thickness of the protective layer of the steel bars is too large or too small, and the steel bars are close to the waterproof board, causing poking. Damage to the waterproof board and waste of steel bars caused by excessive blanking have seriously affected the quality of lining construction and resulted in poor durability of the tunnel structure. There are some steel bar locators in the prior art, but these steel bar locators cannot perform absolute positioning on the steel bars (that is, t...

AI Technical Summary

Problems solved by technology

[0002] During the construction of tunnel lining, it is very difficult to locate the steel bars during the binding process of the side wall steel bars, and it is impossible to accurately locate the steel bars in three dimensions. Often, the spacing between the steel bars is large or small, the thickness of the protective layer of the steel bars is too large or too small, and the steel bars are close to the waterproof board, causing poking. Injury to the waterproof board and waste of steel bars caused by too long blanking seriously affect the quality of lining construction and cause poor durability of the tunnel structure

There are some steel bar locators in the prior art, but these steel bar locators cannot perform absolute positioning on the steel bars (that is, three-dimensional positioning in the X, Y, and Z directions), the distance between the steel bar locators is difficult or cannot be adjusted, and the steel bars in the inner layer of the side wall cannot be adjusted. Simultaneous positioning with the outer layer of reinforcement (especially when the height of the reinforcement of the side wall is not equal)

The method and equipment for three-dimensional accurate positioning of side wall reinforcement have not yet been found

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