Multi-formwork type secondary lining trolley for tunnel construction

Abstract

The invention provides a multi-formwork type secondary lining trolley for tunnel construction, which at least includes a formwork, a portal frame inside the formwork, and a foot support located at the bottom of the formwork and connected thereto. The portal frame is provided with a jib-type pouring device. There are more than two templates, and the overall structure of the template is arched, including a top template, two shoulder templates connected at both ends of the top template, two side templates connected under the shoulder templates, and a bottom connected to the side templates. Turn over the formwork, wherein the shoulder formwork and the side formwork are movably connected to realize the retraction of the formwork. The present invention enables the formwork to expand and contract and pass between the formworks through the door frame, foot support, gourd crane and auxiliary devices, so as to realize the continuous construction of the second lining. It has the advantages of low cost, simple operation and high efficiency.

Description

technical field [0001] The invention belongs to the field of tunnel construction, in particular to a multi-formwork type secondary lining trolley used for tunnel construction. Background technique [0002] In the construction of railways and water conservancy tunnels, shield machines are often used for excavation, and two lining trolleys are used for lining support. The construction of the second lining closely follows the construction of the tunnel face, making the construction efficiency of the second lining slower than that of the shield tunneling, which restricts the overall construction progress of the tunnel. In order to solve the above problems, there are the following two methods: The first method is to use the second lining springboard construction, that is, in order to ensure the safe distance between the second lining and the tunnel face, a trolley will carry out the springboard construction in the front and rear areas, but this method The second lining cannot be...

AI Technical Summary

Problems solved by technology

[0002] In the construction of railways and water conservancy tunnels, shield machines are often used for excavation, and two lining trolleys are used for lining support. The construction of the second lining closely follows the construction of the tunnel face, making the construction efficiency of the second lining slower than that of the shield tunnel, which restricts the overall construction progress of the tunnel

In order to solve the above problems, there are the following two methods: The first method is to use the second lining springboard construction, that is, in order to ensure the safe distance between the second lining and the tunnel face, a trolley will carry out the springboard construction in the front and rear areas, but this method The second lining cannot be continuously looped before and after construction, and there are potential safety hazards; the second method is to use two trolleys for construction, but this method is more expensive and requires more labor.

Therefore, in order to solve the problem of the construction efficiency of the second lining, a kind of trolley structure form with one carrying two has been developed, as disclosed in the patent CN 210564567 U, a kind of second lining trolley that can construct the gradual section of the tunnel, including the second lining trolley in this invention The first and second lining trolleys and the second and second lining trolleys form a trumpet shape with a gradual cross section. The second and second lining trolleys can carry out construction in the tunnel, and the second and second lining trolleys can work on the first and second lining trolleys. However, this structure is only used for gradual sections such as tunnel entrances, and cannot be applied to the second lining construction in tunnels

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