Roadheader Cutting Heads and Roadheaders

Abstract

The invention discloses a heading machine cutting head and a heading machine. The cutting head comprises a cutting head body, a plurality of tooth holders and cutting teeth, the tooth holders are arranged on the cutting head body, the cutting teeth are arranged on the tooth holders, the tooth holders are sequentially arranged in the shape of a spiral line along the periphery of the cutting head body, and the lead angle of the spiral line is increased from the bottom end of the cutting head body to the top end of the cutting head body. As the lead angle of the spiral line formed by arranging the tooth holders is increased, axial spacing is properly increased by the cutting teeth positioned at the top of the cutting head body, the intensity degree of the cutting teeth at the top of the cutting head body is improved, cutting rock debris can be timely discharged, the discharging effect of the cutting head is good, the rock debris is smoothly discharged, so that the cutting efficiency of the cutting head can be improved, and abrasion of the cutting teeth and the tooth holders is reduced.

Description

technical field [0001] The invention relates to the field of drilling equipment for soil layers or rocks, in particular to a cutting head of a roadheader and a roadheader. Background technique [0002] The roadheader is suitable for the tunneling and mining of tunnels, coal and rock roadways, and underground engineering. As the core working mechanism of the roadheader, the cutting head of the roadheader accounts for 70% to 80% of the power of the whole machine, and its performance directly determines the performance of the roadheader. The arrangement parameters of the teeth play a key role in the load fluctuation of the cutting head, the specific energy consumption of the cutting, and the stability of the whole machine, and have a significant impact on the performance of the roadheader. [0003] In the prior art, most of the cutting heads of the roadheader are arranged with equal helix angles, and a few cutting heads are arranged with equal helix angles in order to reduce t...

AI Technical Summary

Problems solved by technology

[0009] figure 1 The top of the cutting head of the roadheader shown is designed as a plane shape, and the picks are densely arranged in this area. Although the force on the picks is reduced to a certain extent, the planar arrangement of the picks is not conducive to cutting the cutting head. When the cutting head drills, the cuttings will easily block the gap between the picks, increase the cutting resistance of the cutting head, and affect the cutting efficiency of the cutting head. The wear of the gear seat is greater

[0010] figure 2 In the cutting head of the roadheader shown, the cutting head body is designed as a cylindrical section, a conical section and an arc section. Decrease, so that the picks on the top of the cutting head are arranged very densely, which is also not conducive to exporting the cut rock cuttings, affecting the cutting efficiency of the cutting head, and the wear of the picks and tooth seats is relatively large

Images