TBM disc cutter with grooved cutter ring outer circumference

A technology of outer circumference and cutter ring, which is used in mining equipment, earth-moving drilling, tunnels, etc., can solve the problems of low hard rock breaking efficiency and low tensile stress, and achieves improved rock breaking efficiency, increased tensile stress, and easy expansion. Effect

Pending Publication Date: 2019-12-03
SOUTHWEST JIAOTONG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Existing studies have shown that tensile stress plays a leading role in the rock breaking process; however, the existing hobs mainly produce compressive stress in the rock, and the tensile stress produced is relatively small, so the efficiency of breaking hard rock is low

Method used

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  • TBM disc cutter with grooved cutter ring outer circumference
  • TBM disc cutter with grooved cutter ring outer circumference
  • TBM disc cutter with grooved cutter ring outer circumference

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0036] Please refer to figure 1 , this embodiment provides a TBM disc hob with grooves on the outer circumference of the cutter ring, which uses the structure of a new rock-breaking hob cutter ring, which includes: a cutter ring 2, a cutter body 4, a retaining ring 3, and a bearing 7 , rigid mandrel 8, bearing end cover 5 and sealing ring 6, wherein, cutter body 4, retaining ring 3, bearing 7, rigid mandrel 8, bearing end cover 5 and sealing ring 6 are standard parts; The ring 3 is fixed on the cutter body 4, the cutter body 4 is internally connected to the bearing 7, the bearing end cover 5 and the sealing ring 6 seal and fix the bearing 7 on the rigid mandrel 8; the cutter body 4, the bearing 7 and the bearing end cover 5 are assembled on the shaft Above, a sealing ring 6 is used between the cutter body 4 and the bearing end cover 5 to seal the internal oil liquid. There is a step outside the cutter body 4 for positioning the cutter ring 2. Therefore, there is a The card sl...

no. 2 example

[0041] The difference between the second embodiment and the first embodiment lies in the arrangement of the outer peripheral surface of the cutter ring 2 .

[0042] Please refer to Figure 5 , this embodiment provides a TBM disc hob with grooves on the outer circumference of the cutter ring, which uses the structure of a new rock-breaking hob cutter ring, which includes: a cutter ring 2, a cutter body 4, a retaining ring 3, and a bearing 7 , rigid mandrel 8, bearing end cover 5 and sealing ring 6, wherein, cutter body 4, retaining ring 3, bearing 7, rigid mandrel 8, bearing end cover 5 and sealing ring 6 are standard parts; The ring 3 is fixed on the cutter body 4, the cutter body 4 is internally connected to the bearing 7, the bearing end cover 5 and the sealing ring 6 seal and fix the bearing 7 on the rigid mandrel 8; the cutter body 4, the bearing 7 and the bearing end cover 5 are assembled on the shaft Above, a sealing ring 6 is used between the cutter body 4 and the bear...

no. 3 example

[0045] The difference between the third embodiment and the first embodiment lies in the arrangement of the outer peripheral surface of the cutter ring 2 .

[0046] Please refer to Figure 6 , this embodiment provides a TBM disc hob with grooves on the outer circumference of the cutter ring, which uses the structure of a new rock-breaking hob cutter ring, which includes: a cutter ring 2, a cutter body 4, a retaining ring 3, and a bearing 7 , rigid mandrel 8, bearing end cover 5 and sealing ring 6, wherein, cutter body 4, retaining ring 3, bearing 7, rigid mandrel 8, bearing end cover 5 and sealing ring 6 are standard parts; The ring 3 is fixed on the cutter body 4, the cutter body 4 is internally connected to the bearing 7, the bearing end cover 5 and the sealing ring 6 seal and fix the bearing 7 on the rigid mandrel 8; the cutter body 4, the bearing 7 and the bearing end cover 5 are assembled on the shaft Above, a sealing ring 6 is used between the cutter body 4 and the beari...

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PUM

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Abstract

The invention discloses a TBM disc cutter with the grooved cutter ring outer circumference. The TBM disc cutter comprises a cutter ring, a cutter body, a check ring, a bearing, a rigid mandrel, a bearing end cover and a seal ring. The cutter ring is fixed to the cutter body through the check ring, the bearing is connected into the cutter body, and the bearing end cover and the seal ring enable thebearing to be fixed to the rigid mandrel in a sealed mode. According to the TBM disc cutter with the grooved cutter ring outer circumference, a novel rock breaking disc cutter ring structure is used;the cutter body, the bearing and the bearing end cover are assembled to the mandrel, internal oil liquid is sealed by means of the seal ring between the cutter body and the bearing end cover, and a step is arranged on the outer ring of the cutter body and used for positioning the cutter ring; and by means of the TBM disc cutter, a compact core shape can be controlled, stress distribution is changed so as to form lateral cracks, production and extension of the lateral cracks are facilitated, the rock breaking energy consumption is reduced, the rock breaking capability is effectively improved,and the rock breaking efficiency is improved.

Description

technical field [0001] The invention relates to the technical field of tunneling construction machinery, in particular to a TBM disc-shaped hob with grooves on the outer circumference of the cutter ring. Background technique [0002] The full name of the shield tunnel boring machine (TBM) is a professional construction machine for tunnel excavation. It has the characteristics of advanced, environmental protection, and high efficiency. Therefore, it is widely used in tunnel excavation construction of urban subways, railways, water conservancy and hydropower projects. in work. [0003] In the tunneling process, its key role is the TBM disc hob. It is installed on the cutter head panel and arranged with different trajectory radii along the radial direction of the cutter head. The disc-shaped hob cutter ring is the key part and easy-to-wear part of the disc-shaped hob. During the operation, it directly contacts the rock, relying on the extrusion force generated when the cutter...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21D9/08
CPCE21D9/08
Inventor 张蒙祺雷宇周仲荣李建斌郑靖王战江
Owner SOUTHWEST JIAOTONG UNIV
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