An arched self-supporting formwork for tunnel concrete construction and pouring

Abstract

The invention relates to an arched self-supporting formwork used for tunnel concrete construction and pouring. One or more brace rods, the first hydraulic rod and the two ends of the brace rod are hinged with the lower part of the upper formwork and the upper part of the lower formwork respectively; the bottom of the lower formwork is provided with a plurality of joists along the length direction, the A through hole is vertically arranged on the beam, and a longitudinal beam is arranged in the through hole to move up and down, a connecting plate is arranged on the upper part of the longitudinal beam, a screw rod is vertically arranged on the joist, and the upper end of the screw rod is one. After passing through the connecting plate, a threaded sleeve is screwed, the tops of the plurality of longitudinal beams are fixedly connected with the same beam, and no less than two joists are fixed with two hydraulic rods. The telescopic rods correspond to the transverse beams; a clamping seat corresponding to the clamping grooves on both sides of the pouring layer is arranged under the longitudinal beam, and a tensioning device for exerting a force on the longitudinal beam is arranged on the clamping seat.

Description

technical field [0001] The invention belongs to the technical field of tunnel pouring equipment, and particularly relates to an arched self-supporting formwork for tunnel concrete construction and pouring. Background technique [0002] At present, when the highways, railways and high-speed railways built in my country pass through mountainous areas, tunnels need to be excavated. The lining trolleys for concrete construction in tunnel construction usually use lining trolleys welded by steel plates. Uniformly welded support gantry. The patent with the publication number CN206801592U discloses a hydraulic lining trolley used for concrete pouring in tunnel Mingdong, which includes a trolley gantry system, a traverse system, a walking system, a top formwork, a side formwork and a screw adjustment system. The side surface of the trolley gantry system is connected with the side formwork through the screw adjustment system, and the top formwork is connected with the upper edge of th...

AI Technical Summary

Problems solved by technology

Due to the large number of supporting gantry welded by the steel plate, which occupies the construction space and affects the demoulding during the lining construction, the weight and volume of the trolley are large, which makes transportation difficult, and the loading, unloading and installation of the trolley into the construction site are more complicated

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