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Non-circular tunnel boring machine and auxiliary excavation device for tunnel boring machine

A technology of a roadheader and a driving device, which is applied in tunnels, mining equipment, earth-moving drilling, etc., can solve the problems of low excavation efficiency and large blind area of ​​cutter head excavation, so as to improve excavation efficiency, facilitate slag discharge, The effect of increasing the spacing

Active Publication Date: 2021-03-19
CHINA RAILWAY ENGINEERING EQUIPMENT GROUP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide an auxiliary excavation device for a roadheader, which is used to solve the technical problem of low excavation efficiency due to the large blind area of ​​the cutter head during the tunnel excavation process of the current roadheader; in addition, the present invention The object is also to provide a non-circular tunnel boring machine using the auxiliary excavation device for the above-mentioned roadheader

Method used

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  • Non-circular tunnel boring machine and auxiliary excavation device for tunnel boring machine
  • Non-circular tunnel boring machine and auxiliary excavation device for tunnel boring machine
  • Non-circular tunnel boring machine and auxiliary excavation device for tunnel boring machine

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specific Embodiment 1

[0136] The non-circular tunnel boring machine of the present invention is applied to the excavation of tunnels with rectangular sections, horseshoe-shaped sections or other special-shaped sections (non-circular sections).

[0137] Such as Figure 1 to Figure 5 As shown, the non-circular tunnel boring machine includes a frame 1, a driving cutter head 2 and an auxiliary excavation device 3 for the roadheader, and the auxiliary excavation device 3 for the roadheader includes a mounting seat 31 installed on the frame 1, a crushing device 32. The adjustment mechanism 33. The frame 1 includes a boring machine partition 11 arranged on the rear side of the boring cutter head 2 . The mounting seat 31 is fixed on the dividing plate 11 of the roadheader.

[0138] The crushing device 32 includes a device base 321 , a crushing head 322 rotatably arranged on the device base 321 , a driving device 323 for driving the crushing head 322 to rotate, and a crushing rod 324 connecting the crushi...

specific Embodiment 2

[0153] Specific embodiment 2 of the non-circular tunnel boring machine of the present invention, the difference between the structure of the non-circular tunnel boring machine in this embodiment and the above-mentioned embodiment is that, as Image 6 As shown, the crushing head 322 is provided with a nozzle 3221 for spraying water, the water inlet channel 3241 communicating with the nozzle 3221 is arranged in the crushing rod 324, the rear end of the crushing rod 324 is provided with a rotary water joint 5, and the internal water channel of the rotary water joint 5 Connected with the water inlet channel, the rotary water joint 5 is arranged between the device base 321 and the breaking rod 324, and the external interface of the rotary water joint protrudes from the device base to connect with the external flexible pipe.

[0154] The specific embodiment 3 of the non-circular tunnel boring machine of the present invention differs from the foregoing embodiments in that, as Figure...

specific Embodiment 6

[0157] The specific embodiment 6 of the non-circular tunnel boring machine of the present invention differs from the above-mentioned embodiments in that, as Figure 10 As shown, in this embodiment, the non-circular tunnel boring machine also includes a crushing drum 6, and the crushing drum 6 is rotatably arranged on the roadheader frame for breaking the excavation blind area of ​​the roadheader. The crushing drum 6 includes a cylinder body 61 and a set With the cutting teeth 62 on the cylinder, the axis of rotation of the crushing drum 6 is perpendicular to the axis of the driving cutter head 2 . The crushing drum 6 is provided with a hydraulic motor, which drives the crushing drum to rotate. In other embodiments, the crushing drum can also be driven by a motor, the axis of the motor extends forward and backward, and the crushing drum is driven by a bevel gear.

[0158] Two crushing drums 6 are provided in this embodiment, instead of the two crushing devices arranged in the ...

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Abstract

The invention relates to the field of tunneling equipment with drilling or cutting tools. The invention discloses a non-circular tunnel boring machine and an auxiliary excavation device for the tunnelboring machine. The auxiliary excavation device for the tunnel boring machine comprises an installation seat, a crushing device and an adjusting mechanism, wherein the installation seat is used for being installed on a rack of the tunnel boring machine; the crushing device comprises a device base, a crushing head rotationally arranged on the device base and a driving device for driving the crushing head to rotate, the device base is movably assembled on the installation seat, and the crushing head is used for crushing an excavation blind area of the tunnel boring machine; and the adjusting mechanism is used for exerting acting force on the device base to enable the device base to move when the crushing head is driven by the driving device to work, so that the position of the crushing headis changed to sweep the excavation blind area. Through cooperation of the crushing device and the adjusting mechanism, the excavation blind area can be swept away, the influence of the excavation blind area on the tunnel boring machine is reduced, and the excavation efficiency is improved.

Description

technical field [0001] The invention relates to the field of excavation equipment with drilling or cutting tools. Background technique [0002] Tunnels with circular cross-sections generally excavate the entire cross-section by using a roadheader with a circular cutter head. The area swept by the cutter head around the central axis is the circular tunnel cross-section. For other special-shaped section (non-circular section) tunnels, a non-circular tunnel boring machine with multiple circular cutter heads is often used to excavate the tunnel section. Since the area swept by multi-cutter excavation often cannot cover the entire tunnel section, the excavation rate of multi-cutter combination is generally 88%~90%, and the area that cannot be covered by multi-cutter combination excavation is the cutter head Excavating the blind area, the excavation of the blind area has a great influence on the advancing speed of the roadheader, which in turn causes the technical problem of low ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D9/00E21D9/10E21D9/12
CPCE21D9/03E21D9/10E21D9/124
Inventor 李建斌范磊刘娇董艳萍贺开伟张宁川孙恒安乐乐薛广记徐姣姣陈家浩冯战勇
Owner CHINA RAILWAY ENGINEERING EQUIPMENT GROUP CO LTD
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