Single-track railway high-gas tunnel face bench shift forward device

Abstract

The invention discloses a single-track railway high-gas tunnel face bench shift forward device. The single-track railway high-gas tunnel face bench shift forward device comprises a bench column (11),a plurality of sets of clamping pieces are symmetrically arranged on the two sides of the bench column (11), the clamping pieces include clamping piece bases (10) connected to the bench column (11) ina welded mode, ball bearing outer rings (7) are installed in the clamping piece bases (10), balls (9) are installed on the ball bearing outer rings (7) through ball holders, and the balls (9) of theball bearing outer rings (7) sleeved cement mortar pouring galvanized steel pipes (8). According to the single-track railway high-gas tunnel face bench shift forward device, the preparation is simple,the price is low, the efficiency is high, and the safety is good; the problem that a small cross-section tunnel face floor stand requires a loader outside the tunnel to enter the tunnel face to movethe bench after the completion of each cycle of drilling blasting can be better solved, and the preparation time of the erection process of the floor stand is shortened.

Description

technical field [0001] The invention relates to the field of railway tunnel engineering construction equipment, in particular to a small-section excavation high-gas railway tunnel face platform forward device. Background technique [0002] The forward movement of the platform of the tunnel face is a construction preparation procedure that needs to be carried out for drilling and erecting of the tunnel face in each cycle. At present, the forward movement of the platform of the tunnel face is carried out by the bucket of the loader, and then The forward-moving operation method has the following disadvantages: (1) Gas is easy to accumulate in the upper space of the face of the high-gas tunnel, and the collision between large machinery and the excavation platform may easily cause sparks and cause gas accidents. (2) Work tools or steel bars, drill pipes, anchor rods, etc. left by construction workers are generally placed on the face platform. The ground is uneven, and the bucket...

AI Technical Summary

Problems solved by technology

[0002] The forward movement of the platform of the tunnel face is a construction preparation procedure that needs to be carried out for drilling and erecting of the tunnel face in each cycle. At present, the forward movement of the platform of the tunnel face is carried out by the bucket of the loader, and then The operation method of moving forward has the following disadvantages: (1) Gas is easy to accumulate in the upper space of the face of the high-gas tunnel, and the collision between large machinery and the excavation platform may easily cause sparks and cause gas accidents

(2) Work tools or steel bars, drill pipes, anchor rods, etc. left by construction workers are generally placed on the face platform. The ground is uneven, and the bucket of the loader is not necessarily in a horizontal state after being lifted, it may be in an inclined state. At this time, the supported platform is also in a skewed state. It will fall and damage the operators or mechanical equipment at the side station; on the other hand, it will cause inaccurate positioning of the forward movement of the platform, requiring secondary operation of the loader, which takes a long time

(3) With the gradual increase of the excavation mileage of the tunnel face, each time the platform is moved forward, the loader needs to drive from the outside of the tunnel to the tunnel face for operation, and then reverse the vehicle to the outside of the tunnel after completion. Construction workers can only stand by and wait, which is a waste of precious construction time and is not conducive to the control of construction progress

(4) The loader is a large-scale machine. When the driver is driving in the cave, due to light, noise and other reasons, the vision is blocked, and the blind area of ​​judgment is enlarged, which poses a certain safety hazard to the construction workers standing nearby and is prone to mechanical injuries. Personnel accidents, especially for single-track railway tunnels with small excavation sections, the risk probability increases sharply

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