Construction trolley for lagging jack in tunnel and underground construction and construction method

Abstract

The invention discloses a construction trolley for a lagging jack in tunnel and underground construction and a construction method. The construction trolley comprises a bottom support structure, a middle support structure and a top jacking structure, wherein the top jacking structure comprises a base, a lifting structure and a third support platform; the base is arranged on a horizontal guiding structure; the lifting structure is arranged on the base; the third support platform is fixed on the lifting structure; a clamping and fixing structure is arranged on the upper surface of the third support platform; the clamping and fixing structure comprises a blocking slot; the slot body width of the blocking slot is corresponding to the width of a to-be-jacked lagging jack, so that the blocking slot is in interference fit with the to-be-jacked lagging jack; and the widths of the first, second and third support platforms are gradually reduced, so that the two opposite edges of the first, second and third support platforms are all in contact with the to-be-jacked lagging jack after the to-be-jacked lagging jack is fully fixed on the construction trolley, and an acting force for fixing the lagging jack is generated.

Description

technical field [0001] The invention relates to a construction trolley and a construction method for arch frames in tunnels and underground engineering. [0002] technical background [0003] With the rapid development of the national economy, the investment in infrastructure construction has increased, and there are more and more tunnel projects such as transportation and water conservancy. The initial support structure mostly adopts arch support forms such as section steel arch frame, grid steel frame, concrete steel pipe, etc. At present, manual installation of the initial support structure is mostly used in construction, resulting in huge manpower consumption and personal injury. [0004] In the prior art, although there are already construction trolleys supporting the support forms such as steel arches, grid steel frames, and concrete steel pipes, the volume of the trolleys is small. When hoisting structures such as arches on the construction trolley, only The jacking p...

AI Technical Summary

Problems solved by technology

The initial support structure mostly adopts arch support forms such as section steel arch frame, grid steel frame, concrete steel pipe, etc. At present, manual installation of the initial support structure is mostly used in construction, resulting in huge manpower consumption and personal injury

[0004] In the prior art, although there are already construction trolleys supporting the support forms such as steel arches, grid steel frames, and concrete steel pipes, the volume of the trolleys is small. When hoisting structures such as arches on the construction trolley, only The jacking part, such as the top of the hydraulic cylinder, is in contact with the arch, so it will cause the structure such as the arch to shake. On the one hand, it is not conducive to adjusting the lifting accuracy of the structure such as the arch. Adjusting the position of the arch frame not only takes time, reduces work efficiency, but also consumes a lot of manpower and material resources. On the other hand, during the shaking process of the arch frame, it is easy to cause injury to the staff or damage to property; When the frame shakes, it is necessary to apply force to the frame to make it stationary, and it is necessary to support the frame during the lifting process of the frame to prevent it from shaking, which consumes manpower and material resources

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