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Free section tunneling equipment

A section and equipment technology, applied in the field of free section tunneling equipment, can solve the problems of reduced rock breaking efficiency, increased frequency of tool change, increased probability of abnormal tool wear, etc., and achieve the effect of improving rock breaking efficiency

Pending Publication Date: 2022-03-15
CHINA RAILWAY ENGINEERING EQUIPMENT GROUP CO LTD
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Problems solved by technology

[0002] In recent years, the construction scale of basic projects such as road traffic, water conservancy and hydropower has increased year by year. The traditional free-section roadheader uses a cutting head to carry metal knives to break rocks. Its rock-breaking ability is acceptable for weak surrounding rocks. When the rock formation (100Mpa), the rock-breaking ability of the metal tool decreases significantly, and the abnormal wear probability of the tool will also increase significantly, resulting in an increase in the frequency of tool changes, a decrease in rock-breaking efficiency, and an increase in the cost of tunnel excavation

Method used

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  • Free section tunneling equipment
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Embodiment Construction

[0022] It should be noted that, in the case of no conflict, the embodiments in the present application and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and examples.

[0023] Such as Figure 1 to Figure 5 As shown, the embodiment of the present invention provides a free-section excavation equipment, which includes a complete machine travel assembly 1 , a plurality of laser generating assemblies 3 and a wedge-shaped extrusion assembly 2 . The whole machine walking assembly 1 can travel along the direction of tunnel excavation; the laser generating assembly 3 is arranged on the whole machine walking assembly 1, and a plurality of laser generating assemblies 3 are configured to emit lasers that cut the face of the tunnel along a preset trajectory, so as to Make the tunnel surface form a concave-convex rock mass with a cut to be squeezed; the wedge-shaped extrus...

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Abstract

The invention provides a free section tunneling device which comprises a whole machine walking assembly capable of advancing in the tunneling direction; the plurality of laser generating assemblies are arranged on the complete machine walking assembly, and the plurality of laser generating assemblies are configured to emit laser for cutting the tunnel face of the tunnel along a preset track, so that a concave-convex rock mass with a to-be-extruded notch is formed on the tunnel face; and the wedge-shaped extrusion assembly is arranged on the complete machine walking assembly and faces the tunnel face, and the wedge-shaped extrusion assembly is configured to extrude the concave-convex rock mass from the notch to be extruded so that the concave-convex rock mass can be broken and fall off. The laser is utilized to enable the complete tunnel face to form the concave-convex rock mass with the notch to be extruded, the integrity and the connection strength of the tunnel face are greatly reduced, the concave-convex rock mass is fractured and stripped from the tunnel face through the extrusion effect of the wedge-shaped extrusion assembly on the concave-convex rock mass, tunnel excavation is achieved, and the rock breaking efficiency can be improved.

Description

technical field [0001] The invention relates to the field of tunnel excavation machinery, in particular to a free section excavation equipment. Background technique [0002] In recent years, the construction scale of basic projects such as road traffic, water conservancy and hydropower has increased year by year. Traditional free-section roadheaders use cutting heads equipped with metal tools to break rocks. For weak surrounding rocks, their rock-breaking ability is acceptable. When the rock formation (100Mpa) is reached, the rock-breaking ability of the metal tool decreases significantly, and the abnormal wear probability of the tool will also increase significantly, resulting in an increase in the frequency of tool changes, a decrease in rock-breaking efficiency, and an increase in the cost of tunnel excavation. Contents of the invention [0003] The invention provides a free-section excavation equipment to achieve the purpose of improving rock-breaking efficiency. [0...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D9/10
CPCE21D9/1073E21D9/1086E21D9/1093E21D9/1053
Inventor 曹宸旭朱英赵华贾连辉何祥宇王领国
Owner CHINA RAILWAY ENGINEERING EQUIPMENT GROUP CO LTD
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