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A cantilever roadheader cutting head suitable for hard rock

A technology of cantilever roadheader and cutting head, which is applied in the field of cutting head, can solve the problems of low penetration of hard rock, poor ability of breaking rock and digging, and excessive wear of picks, so as to increase the penetration of picks , increase work efficiency, enhance the effect of material guiding ability

Active Publication Date: 2022-05-20
SANSHANDAO GOLD MINE SHANDONG GOLD MINING LAIZHOU
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When the roadheader cuts the broken hard rock opening, the existing cutting head requires that the mechanical power should not be too large, and at this time the pick cone angle is relatively large (the pick cone angle is generally about 80°, and the cone head angle is generally 120° left and right), low power combined with large cone angle leads to poor mechanical cutting and rock breaking ability
After normal excavation, the large cone angle of the pick has low penetration into hard rock, low rock-breaking cutting ability, and poor overall work efficiency
[0004] On the other hand, the existing cutting head rubs against the hard rock for a long time without interruption, and the picks are affected by the large cone angle, and the distance between them is relatively large. When the cutting head is working and drilling, the picks cannot be continuously and evenly stressed
Lead to excessive wear of the pick (mainly manifested as eccentric wear), and the failure rate of the cutting head is significantly increased

Method used

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  • A cantilever roadheader cutting head suitable for hard rock
  • A cantilever roadheader cutting head suitable for hard rock
  • A cantilever roadheader cutting head suitable for hard rock

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Embodiment Construction

[0016] Below in conjunction with embodiment and accompanying drawing, further describe the present invention.

[0017] Such as figure 1 , The embodiment of the present invention includes a cutting head main body 1, a material guide plate 2 and a tooth seat 3 are welded on the cutting head main body 1, and a pick-shaped pick is installed on the tooth seat 3.

[0018] The material guide plate 2 and the gear seat 3 are arranged in a helical form along the main body of the cutting head 1 from the front end to the tail end respectively, wherein about 70% of the length of the front part of the main body 1 of the cutting head is a double helix line form, and the rest of the range is in the form of a single helix.

[0019] Such as figure 2 , the front end of the pick has a conical alloy head 6, and the front end of the conical alloy head 6 has a conical head 7.

[0020] The picks within the length range of about 70% (accounting for 70% of the whole body of the cutting head) of the...

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PUM

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Abstract

The invention relates to a cutting head of a cantilever roadheader suitable for hard rock. A material guide plate is welded on the main body of the cutting head; The rear end is arranged; the pick at the front of the main body of the cutting head is the front pick, the taper of the front pick is 70~75°, and the cone angle of the front end of the front pick is 108~112°; the main body of the cutting head (1 ) The rear pick is the rear pick, and the taper of the rear pick is 78~82°. The cone angle of the front end of the rear pick is 108~112°. The pick is more reasonable in force, reduces the failure rate of the cutting head, and improves the working efficiency of the cantilever roadheader.

Description

technical field [0001] The invention belongs to the technical field of metal mine development and recovery engineering equipment, and in particular relates to a cutting head for a cantilever roadheader. Background technique [0002] In the field of metal mine development and recovery engineering, the broken rock formations are mostly stable and hard rock formations with indistinct joint development. Cantilever roadheaders are the main equipment for mechanical excavation of metal mine roadways. The cutting head of the cantilever roadheader is often damaged and malfunctioned during excavation. And mechanical failure will affect the production and construction progress. [0003] The cutting head is the direct contact part between the cantilever roadheader and the hard rock. During the excavation operation, the cutting head is rotated by the engine to drive the pick installed on the tooth seat of the cutting head to penetrate into the rock. When the roadheader cuts the broken ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21C35/18
CPCE21C35/18
Inventor 范纯超侯成录王辉黄丹施升涛李玉选李威郑志杰孙杨况丹阳赵龙
Owner SANSHANDAO GOLD MINE SHANDONG GOLD MINING LAIZHOU
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