TBM dual-blade center hobbing cutter and tool

A hob and double-edged technology, which is applied in mining equipment, earthwork drilling, tunnels, etc., can solve the problems that affect the construction progress of tunnel engineering, the limitations of cutting tool performance, and the high cost of imported cutting tools, so as to easily form a stable rolling track , It is not easy to tilt and lose stability, and the effect of preventing tool failure

Inactive Publication Date: 2020-07-24
凌远科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in such a large market space, tunnel boring machine knives have been monopolized by imported products for a long time, the cost of imported knives is extremely high, and the performance of the knives is limited. At the same time, due to differences in manufacturers, communication difficulties, and long after-sales feedback cycles have greatly affected progress of the tunnel project

Method used

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  • TBM dual-blade center hobbing cutter and tool
  • TBM dual-blade center hobbing cutter and tool
  • TBM dual-blade center hobbing cutter and tool

Examples

Experimental program
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Effect test

Embodiment 1

[0063]This embodiment one mainly discloses the structure and working principle of the TBM double-edged center hob of the present invention;

[0064] see Figure 1 to Figure 6 shown.

[0065] Specifically: the TBM double-edged central hob of the present invention, the double-edged central hob comprises:

[0066] end cover assembly;

[0067] a hob unit assembled in the end cover assembly, the hob unit includes two hob bodies 2 arranged at intervals; and

[0068] The bearing 5 assembled on the inner side of the hob body 2;

[0069] This double edge center hob also includes:

[0070] Extending axially along the bearing 5 and passing through the cutter shaft 3 of the end cover assembly;

[0071] The hob body 2 rotates around the axis of the cutter shaft 3 through the bearing 3;

[0072] The bearing 5 is a tapered roller bearing, and the installation taper angle of the tapered roller of the tapered roller bearing relative to the axis of the cutter shaft 3 is θ;

[0073] The i...

Embodiment 2

[0100] A TBM cutter disclosed in Embodiment 2 is integrated with the above-mentioned double-edged central hob.

[0101] In the above technical solution, a TBM double-edged center hob and cutter provided by the present invention have the following beneficial effects:

[0102] The TBM double-edged center hob and cutting tool of the present invention reduce the installation taper angle of the tapered roller of the tapered roller bearing, which can effectively reduce the axial force component of the cutting tool, and the tapered roller bearing adopted by the present invention is more efficient than imported bearings. The width is narrower. Due to the narrower width of the support seat of the inner ring of the bearing and the tapered roller, the force bearing area is reduced and the pressure is increased. It is easier to form a stable rolling ring track under the heavy load pressure of normal work, and it is not easy to tilt and lose stability. ; The installation taper angle is red...

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Abstract

The invention discloses a TBM dual-blade center hobbing cutter and a tool. The center hobbing cutter comprises an end cover assembly and a hobbing cutter set assembled in the end cover assembly, the hobbing cutter set comprises two hobbing cutter bodies mounted in a spaced manner, and bearings assembled on the inner sides of the hobbing cutter bodies, the dual-blade center hobbing cutter further comprises a cutter shaft extending in the axial direction of the bearings and penetrating through the end cover assembly, the bearings are conical roller bearings, the mounting taper angle of conical rollers of the conical roller bearings relative to the axis of the cutter shaft is theta, the mounting taper angles of the conical rollers relative to the axis of the cutter shaft is theta and smallerthan 12 degrees, according to the TBM dual-blade center hobbing cutter and the tool, the mounting taper angles of the conical rollers of the conical roller bearings are reduced, the tool axial component force can be effectively reduced, compared with an imported bearing, the conical roller bearings are narrower, due to the fact that a bearing inner ring supporting base and the conical rollers arenarrower, the stress area is reduced, the pressure intensity is increased, under the heavy load pressure of normal work, a stable roller ring track is more easily formed, and the inclination to lose stability is not prone to happening.

Description

technical field [0001] The invention relates to the technical field of TBM roadheaders, in particular to a double-edged center hob suitable for use in TBM roadheaders and a tool with the double-edged center hob. Background technique [0002] With the rapid development of my country's urban rail transit, railways, highways, water conservancy, municipal engineering and other construction undertakings, the development of the excavation machinery industry as the main assembly for tunnel construction is very rapid. The number of major excavation machinery such as full-section tunnel boring machines in my country and market size are already in a leading position in the world. [0003] Knives are key components of tunnel boring machines (abbreviated as TBMs) and shield machines for rock-breaking excavation. They are consumables. The performance indicators of the knives directly affect the rock-breaking ability and gold leveling speed of the tunnel boring machine, and are the main fa...

Claims

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Application Information

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IPC IPC(8): E21D9/10
CPCE21D9/1006E21D9/104
Inventor 张凌于永生马文超任贺王艺蓓
Owner 凌远科技股份有限公司
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