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Heading machine adopting high pressure water for rock breaking

A high-pressure water, roadheader technology, applied in mining equipment, earth-moving, tunnels, etc., can solve the problems of reduced shield tunneling efficiency, frequency of hob wear and replacement, abnormal damage to metal tools, etc., to save tool costs and replace them. The effect of cutting water risk, reducing excavation cost, and improving rock breaking efficiency

Inactive Publication Date: 2018-11-06
CHINA RAILWAY ENGINEERING EQUIPMENT GROUP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] At present, tunneling is aimed at rock formations, mainly relying on disc-shaped hobs to squeeze rocks to achieve the purpose of breaking rock mass. It mainly overcomes the compressive strength of rocks. For rock formations with general strength (within 100MPA), its rock-breaking efficiency It is acceptable, but with the increase of rock strength, the efficiency of hob crushing and breaking rock gradually decreases, and the abnormal wear and replacement frequency of hob increases, which leads to the decrease of shield tunneling efficiency and the increase of tunneling cost
At the same time, when excavating severely uneven ground such as soft top and hard bottom, traditional metal tools are prone to abnormal damage

Method used

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  • Heading machine adopting high pressure water for rock breaking
  • Heading machine adopting high pressure water for rock breaking
  • Heading machine adopting high pressure water for rock breaking

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0024] Example 1: Such as Figure 1-4 The said roadheader that utilizes high-pressure water to break rock includes a mainframe of theheader and a high-pressure water output system 8 matched with the main body of theheader. The front of the mainframe of theheader is provided with a cutter head system 3, The cutter head 301 of the disk system 3 is evenly provided with a number of high-pressure water generating devices 2. The high-pressure water generating devices are arranged on the cutter head 301, so that the movement track of the high-pressure water generating device 2 covers the entire excavation surface. With the rotation of the cutter head, full-face excavation is realized. The water outlet of the high-pressure water generator 2 has an inclination angle with the rock 1 of the excavation site. The high-pressure water emitted from the high-pressure water generator 2 acts on the tunnel surface. The excavation face is formed with an inclination angle, so the formed high-pressu...

Embodiment 2

[0029] Example 2: A roadheader that uses high-pressure water to break rock. The cutter head 301 is tapered. The cutter head 301 can maximize the use of high-pressure water jets for rock breaking during rotary cutting. The water flow path of the water launching device box 202, the total water inlet of the water flow path of the cutter head 301 is set in the middle of the cutter head 301, the water outlet joint of the pipeline system 4 and the total water inlet of the water flow path of the cutter head 301 pass through The high-pressure rotary joint is connected in a sealed manner to prevent the pipeline system 4 from being damaged as the cutter head 301 rotates. The other structure and working principle are the same as the first embodiment.

Embodiment 3

[0030] Embodiment 3: A roadheader that uses high-pressure water to break rocks. A pressure relief valve for adjusting the pressure in the cabin is provided on the panel of the cutter head 301 to avoid excessive pressure in the cabin. The optimal angle at which the high-pressure water jet nozzle 201 is inclined radially outward along the center of the cutter head 301 is between 15 degrees and 25 degrees. The other structure and working principle are the same as the second embodiment.

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Abstract

The invention discloses a heading machine adopting high pressure water for rock breaking. The heading machine comprises a heading machine main body and a high pressure water output system matched withthe heading machine main body. A cutterhead system is arranged at the front portion of the heading machine main body; a cutterhead of the cutterhead system is provided with a plurality of high pressure water generating devices; inclination angles are formed among water outlets of the high pressure water generating devices and rock of an excavation face at the excavation position; the high pressure water generating devices are in connecting fit with the high pressure water output system by a pipeline system; the pipeline system is mainly composed of high pressure flexible pipes; a driving system used for driving the cutterhead system is arranged at the middle portion of the heading machine main body; the heading machine main body is internally provided with a slag-out system matched with the cutterhead system; and the heading machine main body is provided with a stepping system. A high pressure water cutter system is adopted to solve the problem of extremely easy abnormal damage of metal cutting tools during rock cutting, excavation efficiency is improved, and excavation cost is lowered.

Description

Technical field [0001] The invention relates to the field of tunnel boring machinery, in particular to a boring machine that uses high-pressure water to break rocks. Background technique [0002] At present, tunneling is aimed at rock formations. It mainly relies on disk hobs to squeeze the rock to achieve the purpose of breaking the rock mass. It mainly overcomes the compressive strength of the rock. The breaking efficiency of the rock with general strength (within 100MPA) It is acceptable, but as the strength of the rock increases, the efficiency of the hob squeezing and breaking the rock gradually decreases. The abnormal wear of the hob and the increase in the frequency of replacement will result in a decrease in shield tunneling efficiency and an increase in tunneling costs. At the same time, the traditional metal cutters are prone to abnormal damage when digging into serious uneven geology such as upper soft and lower hard. [0003] The principle of the high-pressure water je...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D9/10
CPCE21D9/1006E21D9/1066
Inventor 卓兴建李建斌张家年杨洋贾连辉欧阳凯
Owner CHINA RAILWAY ENGINEERING EQUIPMENT GROUP CO LTD