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High-pressure water jet and mechanical coupling integrated rock-breaking disc-type hobbing cutter and rock-breaking method

A high-pressure water jet, integrated technology, applied in the field of shield tunneling machines, can solve the problem of low tool coordination, and achieve the effects of improving rock breaking efficiency, improving tunneling efficiency, and simplifying installation design.

Pending Publication Date: 2019-12-20
CHINA RAILWAY ENGINEERING EQUIPMENT GROUP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] In view of the shortcomings in the above-mentioned background technology, the present invention proposes a high-pressure water jet-mechanical coupling integrated rock-breaking disc-type hob and a rock-breaking method, which solves the problem that the high-pressure water jet and the self-rotating cutter do not have a high degree of cooperation in the prior art. The problem

Method used

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  • High-pressure water jet and mechanical coupling integrated rock-breaking disc-type hobbing cutter and rock-breaking method
  • High-pressure water jet and mechanical coupling integrated rock-breaking disc-type hobbing cutter and rock-breaking method
  • High-pressure water jet and mechanical coupling integrated rock-breaking disc-type hobbing cutter and rock-breaking method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Example 1, such as Figure 1~3 As shown, a high-pressure water jet-mechanical coupling integrated rock-breaking hob includes a cutter shaft 1, a cutter body 3 and a cutter ring 2. The cutter body 3 is mounted on the cutter shaft 1 in rotation, and the cutter ring 2 is fixed on the On the knife body 3. The cutter shaft 1 is provided with a high-pressure water inlet channel 4, the cutter body 3 is provided with a high-pressure water distribution channel 5, and the cutter ring 2 is provided with a high-pressure water outlet channel 6, and the high-pressure water distribution channel 5 corresponds to the high-pressure water inlet channel 4 , the high-pressure water outlet channel 6 corresponds to the high-pressure water distribution channel 5 . The cutter ring 2 and the cutter housing 304 can rotate around the cutter shaft 1, so that the high-pressure water always works on the front side of the hob along with the rolling of the hob. When in use, high-pressure water enters...

Embodiment 2

[0027] Example 2, such as figure 2 As shown, a high-pressure water jet-mechanical coupling integrated rock-breaking hob, the cutter body 3 includes a cutter housing 304, and the cutter housing 304 is installed on the cutter shaft 1 through two symmetrically arranged bearings 303, The knife housing 304 includes a top main housing and two side housings which seal the two bearings. An axial retaining ring 302 is arranged between two symmetrically arranged bearings 303, and the axial retaining ring 302 is sleeved on the cutter shaft. Set relatively static to the axial retaining ring 302 , or relatively stationary to the knife housing 304 , the seal 301 is used to seal the bearing and facilitate the passage of high-pressure water. The high-pressure water distribution channel 5 is arranged radially inside the knife housing 304 . In order to facilitate the directional passage of high-pressure water, the axial retaining ring 302 is provided with several first radial through holes 3...

Embodiment 3

[0030] Embodiment 3: A rock-breaking method of a high-pressure water jet-mechanical coupling integrated rock-breaking disc hob, comprising the following steps:

[0031]S1: The high-pressure water outlet channel 6 on the cutter shaft 1 is connected to the high-pressure water system of the roadheader;

[0032] S2: When the high-pressure water jet is used to break the rock during the tunneling process of the roadheader, the high-pressure water of the high-pressure water system enters the hob through the high-pressure water inlet channel 4, and then sprays out through the high-pressure water distribution channel 5 and the high-pressure water outlet channel 6 to form high-pressure water. The jet impacts on the rock surface, causing cracks on the rock surface, and then the rock surface is crushed by the hob to achieve rock breaking, such as Figure 5 shown.

[0033] In step S2, during the rolling process of the hob, the cutter housing of the hob rotates passively, and the high-pres...

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Abstract

The invention discloses a high-pressure water jet and mechanical coupling integrated rock-breaking disc-type hobbing cutter and a rock-breaking method, and solves the problem that in the prior, the degree of the cooperation between high-pressure water jet and a rotatable cutter is not high. The high-pressure water jet and mechanical coupling integrated rock-breaking disc-type hobbing cutter comprises a cutter shaft, a cutter body and a cutter ring, wherein the cutter body is mounted on the cutter shaft; the cutter ring is mounted on the cutter body; high-pressure water inlet pore channels arearranged in the cutter shaft; high-pressure water distribution channels are arranged in the cutter body; high-pressure water outlet pore channels are arranged in the cutter ring; the high-pressure water distribution channels and the high-pressure water inlet pore channels correspond; and the high-pressure water outlet pore channels and the high-pressure water distribution channels correspond. According to the high-pressure water jet and mechanical coupling integrated rock-breaking disc-type hobbing cutter disclosed by the invention, embedded high-pressure water jets are adopted, that is, high-pressure water enters the hobbing cutter through the high-pressure water inlet pore channels, and then the high-pressure water is ejected outward through the high-pressure water distribution channelsand the high-pressure water outlet pore channels so as to form the high-pressure water jets; and cracks are formed on a rock surface when the rock surface is impacted by the high-pressure water jets in advance of the hobbing cutter, and then the rock surface with the cracks is rolled and crushed by the hobbing cutter (the cutter ring), so that the tunneling efficiency can be improved.

Description

technical field [0001] The invention relates to the technical field of shield machines, in particular to a high-pressure water jet-mechanical coupling integrated rock-breaking disc hob and a rock-breaking method. Background technique [0002] Tunnel boring machine is a large-scale tunnel excavation equipment integrating mechanical, electronic, hydraulic, laser and other technologies. It plays an important role in the construction of mountain tunnels and urban subway projects. In the process of hard rock excavation, the hardness of the rock is relatively high, the force on the cutter head is complicated, the wear of the cutter is fast, and the frequency of changing the cutter is relatively high, which greatly restricts the construction efficiency. In addition, the tool change operation of the shield machine is not only costly and takes a long time, but also the operating environment is harsh, and the operators will bear great safety risks. It is an imminent task to develop a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D9/10
CPCE21D9/10E21D9/1066
Inventor 姜礼杰赵梦媛杨航原晓伟文勇亮
Owner CHINA RAILWAY ENGINEERING EQUIPMENT GROUP CO LTD
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