TBM step device adapted to turning

Abstract

The invention relates to the technical field of full-section rock tunnel boring machines (TBM), in particular relates to a TMB step device adapted to turning, and aims at adjusting left-right deflection posture, in a horizontal position, of a TBM main engine so as to adjust the direction of the main engine. The TMB step device comprises a sliding plate seat, a sliding plate, a lifting mechanism, a rear bracket and a pull rod, wherein the sliding plate is arranged on the sliding plate seat; the lifting mechanism is arranged on two sides of the front part of the sliding plate seat and connected with a TBM shield; the rear bracket is used for bearing rear weight of a TMB; the pull rod is connected with the sliding plate seat and the rear bracket; the rear bracket comprises a saddle sliding bracket and a sliding seat which is arranged at the bottom of the saddle sliding bracket; a power mechanism which is used for driving the saddle sliding bracket to move transversely is arranged on the sliding seat; and one end of the pull rod is connected with the sliding seat through a universal lug. The step device provided by the invention is capable of flexibly adjusting the left-right deflection posture, in the horizontal position, of the TBM main engine so as to adjust the direction of the main engine and satisfy a TBM turning requirement in the step process, and is simple in structure and convenient and practical to operate.

Description

technical field [0001] The invention relates to the technical field of a full-face rock tunnel boring machine (TBM), in particular to a TBM stepping device adapted to turning. Background technique [0002] After the TBM is assembled, it needs to step forward to the starting tunnel face to start excavation. In addition, after the previous section of the tunnel is excavated and penetrated, it also needs to step and transfer to the next tunnel section for excavation. This requires a stepping device to realize. At present, the planar slide-type stepping device used by TBM can only make the TBM host and its supporting equipment step along a straight line. For example, the Chinese patent No. 201410426467.2 discloses an open-type TBM planar sliding stepping device and stepping method , including the seat plate, the lifting mechanism connected with the TBM shield and the rear support for supporting the weight of the rear of the TBM. The rear support is connected to the rear of the s...

AI Technical Summary

Problems solved by technology

At present, the planar slide-type stepping device used by TBM can only make the TBM host and its supporting equipment step along a straight line. For example, the Chinese patent No. 201410426467.2 discloses an open-type TBM planar sliding stepping device and stepping method , including the seat plate, the lifting mechanism connected with the TBM shield and the rear support for supporting the weight of the rear of the TBM. The rear support is connected to the rear of the seat plate through a tie rod, and the two ends of the tie rod are respectively hinged with the seat plate and the rear support. There is a slide plate on the plate to support the front of the TBM, and a propulsion hydraulic cylinder is provided behind the slide plate. This patent can realize the straight stepping of the TBM. The stepping mechanism cannot adjust the posture of the main engine, and the turning will cause the stepping mechanism to receive a large lateral force, which will make the TBM stepping unstable and even cause deformation or damage to the TBM main engine or the stepping mechanism

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