A lining trolley suitable for the construction of main tunnels and branch tunnels in parallel tunnels

Abstract

The invention provides a section-variable tunnel-crossing lining trolley which comprises a portal system, a template system, a connecting part and a walking mechanism, wherein the portal system comprises a frame part, a jacking mechanism and a bracket part; the jacking mechanism comprises multiple sets of jacking single pieces; each of the jacking single pieces comprises a multi-level jacking part; the bracket part comprises a truss girder and an adjusting support frame for a walking mechanism; the template system comprises a top template, a left template and a right template; and the connecting part comprises a support jack and a hydraulic cylinder. The section-variable tunnel-crossing lining trolley provided by the invention has the effects that the whole structure is simple; the assembling is convenient; the jacking mechanism is in a multi-level jacking mode; the trolley not only can adapt to the construction for the tunnel sections in different heights but also can achieve higher lifting volume; the trolley can meet the requirement of constructing multiple parallel tunnels by one trolley in the manner of constructing the working tunnel; due to the design of the bracket part, the lining trolley can meet the stability requirement, and meanwhile, the structure is simplified and the whole trolley can be supported.

Description

technical field [0001] The invention relates to the technical field of tunnel construction, in particular to a lining trolley suitable for the construction of main tunnels and branch tunnels in parallel tunnels. Background technique [0002] Tunnel lining trolleys are more and more widely used in the prior art. In tunnel construction, multiple tunnels are often constructed in parallel, and construction branch tunnels are set between parallel tunnels. The construction branch tunnels intersect with the main tunnel at a non-perpendicular angle to facilitate the transfer of materials in the tunnel, and the cross-section of the construction branch tunnels Generally, it is much shorter than the cross section of the main hole. [0003] The variety of tunnel sections determines the specific characteristics of the trolleys. When the tunnel length is not long, one trolley can line multiple tunnels, but because the traditional secondary lining trolley in the main tunnel cannot pass t...

AI Technical Summary

Problems solved by technology

When the tunnel length is not long, one trolley can line multiple tunnels, but because the traditional secondary lining trolley in the main tunnel cannot pass through the construction branch tunnel, it is often necessary to configure one or more trolleys for each tunnel Construction is carried out separately, or the trolley is dismantled and then transported to another tunnel by means of transportation and reassembled for construction

[0004] Therefore, in the working condition of parallel construction of multiple tunnels, the application of the lining trolley in the prior art has the following defects: (1) The distance between the portal frame and the formwork in the trolley is short, and the demoulding shrinkage of the trolley It is very limited, and can only be demoulded and shrunk to less than 20 cm from the tunnel lining surface, which cannot meet the requirements for passing through the construction branch hole; (2) The trolley cannot pass through the construction branch hole, and each tunnel needs to be equipped with one or more units The cost of equipment is greatly increased, and the assembly of multiple trolleys and the dismantling after construction will consume a lot of manpower and material resources, and more investment in construction and maintenance costs will be required; (3) the existing trolleys are only used for Construction of straight tunnels, not suitable for tunnel construction with a certain amplitude

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