Tunnel secondary lining rebar positioning, laying and ejecting device

Abstract

The invention relates to the field of tunnel construction auxiliary means, in particular to a tunnel secondary lining rebar positioning, laying and ejecting device. The tunnel secondary lining rebar positioning, laying and ejecting device comprises a rack, a positioning mechanism, a laying mechanism and an ejecting mechanism, wherein the positioning mechanism, the laying mechanism and the ejecting mechanism are arranged on the rack. The positioning mechanism comprises a perpendicular positioning cylinder and a horizontal positioning cylinder; the laying mechanism comprises a container, and the container is parallel to the circumferential direction; the ejecting mechanism comprises a plurality of ejectors arranged in the circumferential direction of the rack, and each ejector comprises a plurality of spiral screw rod ejecting units and connecting rods arranged in the longitudinal direction of the rack; each spiral screw rod ejecting unit comprises an ejecting end and an input end, the input ends of each two adjacent spiral screw rod ejecting units of each ejector are connected through the connecting rods, and motors are connected with the connecting rods; and the ejecting ends of the spiral screw rod ejecting units of each ejector are jointly connected with an ejecting rod, and a plurality of rotatable positioning wheels are arranged on each ejecting rod. According to the tunnel secondary lining rebar positioning, laying and ejecting device, a rebar auxiliary laying device is provided, tunnel secondary lining rebar is laid rapidly and efficiently, and deformation of a circumferential rebar caused by uneven stress is avoided.

Description

technical field [0001] The invention relates to the field of tunnel construction auxiliary tools. Background technique [0002] In the construction of tunnel engineering, the precise positioning of the secondary lining reinforcement binding has always been a major problem restricting the construction quality of the secondary lining. The secondary lining reinforcement includes longitudinal (along the direction of tunnel excavation) reinforcement and circumferential reinforcement (along the tunnel cross-section direction). The structure is very simple, and its function is only a movable scaffold. The steel bar binding is mainly done manually, and the 9-30m long steel bar welded on the ground (or sleeve connection) is sent from the side of the trolley to the arch. And use the elasticity of the steel bar (generally 22-25mm in diameter) to form a ring on the outside of the trolley. Since it is inconvenient to penetrate the tarpaulin to add support points to the steel bars, and ...

AI Technical Summary

Problems solved by technology

Due to the long size of the hoop steel bar (9-30m) and heavy weight, it will swing or swing during transportation, which is very inconvenient for workers to lift the hoop bar to the longitudinal bar for positioning, and every time they lift the hoop bar Only 1-2 steel bars can be lifted for positioning, and the positioning efficiency is not high. In addition, due to the limited space in the process of lifting the hoop steel bars, the operation is very inconvenient, and it is easy to deform the hoop steel bars due to uneven force. , which is not conducive to precise positioning

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