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A hobless hard rock tunneling machine using microwave and liquid nitrogen jet to break rock

A technology of hard rock boring machine and microwave radiation, which is applied in mining equipment, tunnels, earthwork drilling, etc., can solve the problems of long construction period and high cost, and achieve the effect of reducing excavation cost, light weight and improving excavation efficiency.

Active Publication Date: 2022-02-22
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 deficiencies in the above-mentioned background technology, the present invention proposes a hobless hard rock tunneling machine that uses microwaves and liquid nitrogen jets to break rocks, which solves the need for cutter replacement and other maintenance when using hob cutterheads to dig into hard rock. The technical problems caused by high cost and long construction period

Method used

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  • A hobless hard rock tunneling machine using microwave and liquid nitrogen jet to break rock
  • A hobless hard rock tunneling machine using microwave and liquid nitrogen jet to break rock
  • A hobless hard rock tunneling machine using microwave and liquid nitrogen jet to break rock

Examples

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Effect test

Embodiment 1

[0036] Example 1, a non-rolled hard rock excavator of microwave and liquid nitrogen jet, such as figure 1 As shown, including the shield 8, the shield 8 is provided with a high-span center drive system 2, and the high-span center drive system 2 is connected to the connecting frame 71 greater than one meter, and the non-hob cutting cutter 3, a high-span center drive system. 2 Plite the non-hob cutting wheel to rotate. The shield 8 is provided with a tubular assembly machine 10 and a screw conveyor 12, and the feed end of the screw conveyor 12 is located adjacent to the rear side of the unveiled knife cutter disk 1.

[0037] Since the non-roller tool disc 1 is driven by a high-span center drive system 2, the back of the non-horing blade can have sufficient assembly space, and the microwave transmitter 3 is set at the back of the unable knife disk 1. The microwave transmitter 3 is connected to a microwave radiation arm 4 leading to the front side of the non-hobbick 1. The microwave i...

Embodiment 2

[0045] Example 2, a non-rolled hard rock tractor using microwave and liquid nitrogen jet, such as Image 6 and Figure 7 As shown, the liquid nitrogen high pressure delivery tube includes a stainless steel tube and a stainless steel flexible telescopic tube, and the stainless steel pipe can effectively maintain the temperature of liquid nitrogen in liquid nitrogen high pressure conveying tubes, stainless steel flexible telescopic tubes are contraction phenomena for pipelines under ultra-low temperature, every separation It is certainly designed telescopic structure. The outer and stainless steel flexible telescopic tubes are provided with a polyurethane foaming insulation layer 68 to further ensure the temperature of liquid nitrogen in the liquid nitrogen high pressure delivery tube.

[0046] The other structure of the present embodiment is the same as in Example 1.

Embodiment 3

[0047] Example 3, a non-rolled hard rock mining machine using microwave and liquid nitrogen jet, such as Figure 8 As shown, the connecting port of the liquid nitrogen high pressure conveying tube is employed with autonomous research and dual hard sealing structures. Given the sealing material such as Dingqing Rubber, fluoroprote rubber, the high pressure and ultra-low temperature state, the viscosity and density of liquid nitrogen is small, the surface tension is also lower than water, ultra-low temperature, low viscosity, ultra-low surface tension The selection of liquid nitrogen in the high pressure delivery is large, so the dual hard sealing structure specifically designed.

[0048] The double hard seal structure includes an outer screw 63 that is welded to one end liquid nitrogen high pressure delivery tube 6, and the other end liquid nitrogen high pressure conveying tube 6 is provided with a stop step 64, and the liquid nitrogen high pressure conveying tube 6 is inserted with...

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Abstract

The invention discloses a hob-less hard rock tunneling machine using microwave and liquid nitrogen jets to break rock, which solves the problems of high cost and construction period caused by the need to change the cutter head when the hob cutter head is used to excavate hard rock. Long technical question. The invention includes a high-span central drive system connected with a hob-free cutterhead, a microwave emitter is arranged on the hobless cutterhead, the microwave emitter is connected with a microwave radiation arm, and a liquid nitrogen nozzle and a The large slag outlet with an opening ratio greater than 25%, and the liquid nitrogen nozzle is connected to the liquid nitrogen supply system through the liquid nitrogen high-pressure delivery pipe. The present invention adopts a microwave and liquid nitrogen jet coupling rock-breaking system, completely abandons the conventional rock-breaking technology with cutters, solves the problem that the metal cutters of the roadheader are prone to abnormal damage when cutting rocks, and at the same time improves the excavation efficiency and reduces the Excavation cost.

Description

Technical field [0001] The present invention relates to the technical field of fifth-generation tunnel trays, in particular, refers to a non-hob rocking machine using microwave and liquid nitrogen jet. Background technique [0002] At present, the tunnel excavation is for the rock formation. It is mainly based on the discharging rock to reach the broken rock mass. It mainly overcomes the pressure strength of the rock. It is a rock formation (100MPA) for the general intensity. However, but in a harder rock formation, the rolling rock is very economical. Therefore, there is a need for subversive inventions and a new type of digging machine and a roseman method. [0003] According to the search, the existing application date is 2018.12.25, and the application number 201822184738.4 discloses a microwave-assisted rock TBM cutter disk for hard rock, including the TBM cutter disk main body, the main body of the TBM Single-blade broken rock knife, double-blade broken rock knife, water sp...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21D9/087E21D9/06E21D9/00E21D9/093E21D9/12
CPCE21D9/087E21D9/0621E21D9/0642E21D9/124E21D9/001E21D9/093E21D9/0873
Inventor 贾连辉朱英程绍磊王梦凡齐寅
Owner CHINA RAILWAY ENGINEERING EQUIPMENT GROUP CO LTD
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