Rock breaking multi-arm cantilever tunneling machine carried with suspension cutters and method for constructing rock breaking multi-arm cantilever tunneling machine

A technology of cantilever roadheader and cutting knife, which is applied in the direction of earth drilling, mining equipment, tunnels, etc., and can solve problems such as difficult excavation of special-shaped tunnels

Pending Publication Date: 2018-11-23
CHINA RAILWAY ENGINEERING EQUIPMENT GROUP CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In order to solve the problems existing in the background technology when the existing roadheaders are difficult to excavate short-distance, hard rock, and...

Method used

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  • Rock breaking multi-arm cantilever tunneling machine carried with suspension cutters and method for constructing rock breaking multi-arm cantilever tunneling machine
  • Rock breaking multi-arm cantilever tunneling machine carried with suspension cutters and method for constructing rock breaking multi-arm cantilever tunneling machine
  • Rock breaking multi-arm cantilever tunneling machine carried with suspension cutters and method for constructing rock breaking multi-arm cantilever tunneling machine

Examples

Experimental program
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Effect test

Embodiment 2

[0033] Embodiment 2: A multi-arm type cantilever roadheader equipped with a suspension cutter for rock breaking, the two rotary tables 5 are connected by bearings, such as figure 2 As shown, two booms 6 are hinged on each turntable 5 , and each boom 6 is hinged to two pitch cylinders 503 . It is convenient for the cantilever 6 to move up and down and rotate stably and uniformly, to increase the bearing capacity of the cantilever 6, and to carry out unified and coordinated rock breaking on the face of the tunnel. Other structures and usage methods are the same as those in Example 1.

Embodiment 3

[0034] Embodiment 3: A multi-arm type cantilever roadheader equipped with a suspension cutter to break rock, in order to make the suspension cutter 8 easy to bear force when breaking rock, as Figure 4 As shown, the edge of the upper part of the hanging cutter 8 extends out of the edge of the cutter head 7, and the lower part of the hanging cutter 8 is fixed on the cutter head 7 by bolts. Other structures and usage methods are the same as those in Example 1.

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Abstract

The invention discloses a rock breaking multi-arm cantilever tunneling machine carried with suspension cutters and a method for constructing the rock breaking multi-arm cantilever tunneling machine. By the aid of the rock breaking multi-arm cantilever tunneling machine and the method, the problem of difficulty in excavating short-distance, hard-rock and special-shaped tunnels by the aid of existing tunneling machines can be solved. The rock breaking multi-arm cantilever tunneling machine comprises a main mechanism. A counterforce support mechanism, a residue discharge device and a travel mechanism are mounted on the lower portion of the main mechanism, two rotary tables are symmetrically arranged at the front of the main mechanism in the up-down directions, pitching oil cylinders are arranged at the fronts of the two rotary tables, at least one cantilever is hinged onto each rotary table, rotary shafts are arranged inside the cantilevers, the cantilevers are connected with discs by therotary shafts, the middles of the cantilevers are hinged to the pitching oil cylinders, and the suspension cutters are arranged on the discs. The rock breaking multi-arm cantilever tunneling machineand the method have the advantages that the multiple cantilevers are additionally arranged on the double rotary tables, the suspension cutters are additionally arranged on the discs, simultaneous excavation can be carried out by all the discs, accordingly, the simultaneous rock breaking working range can be expanded, the excavation efficiency can be improved, and the rock breaking multi-arm cantilever tunneling machine and the method are applicable to excavating short-distance tunnels, special-shaped sections and hard-rock tunnels.

Description

technical field [0001] The invention relates to the technical field of roadheader cantilever, in particular to a multi-arm type cantilever roadheader equipped with a suspension cutter for rock breaking and a construction method thereof. Background technique [0002] At present, the cantilever roadheaders used in tunnel construction are mostly used for whole-rock roadways and half-coal roadways with low hardness, and are rarely used for hard rock tunnels. Existing cantilever roadheaders have a single cantilever. During excavation, the cantilever excavation structure is close to the tunnel face. The cantilever swings left and right and up and down to cut rocks sequentially from one side to the other. The excavation efficiency is relatively low. Therefore, there is a need for a cantilever roadheader that can be used for excavating short-distance, hard rock, and special-shaped tunnels. Contents of the invention [0003] In order to solve the problems existing in the backgroun...

Claims

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Application Information

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IPC IPC(8): E21D9/10E21D9/12
CPCE21D9/10E21D9/12
Inventor 李建斌贺飞齐志冲张倩杨添任董岳李坤
Owner CHINA RAILWAY ENGINEERING EQUIPMENT GROUP CO LTD
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