Cutting mechanism of excavating machine and excavating machine

Abstract

The invention provides a cutting mechanism of an excavating machine and the excavating machine. The cutting mechanism of the excavating machine comprises a speed reduction box (1), cutting winding drums (2), a coupler (3) and a cutting motor (4), wherein the cutting motor (4) is connected with the speed reduction box (1) through the coupler (3), and the cutting motor (4) provides power for the speed reduction box (1) through the coupler (3); the cutting winding drums (2) are fixed on both ends of the speed reduction box (1), and the cutting winding drums (2) are used for excavating operation under the driving of the speed reduction box (1); and the speed reduction box (1) is used for controlling the excavating speed of the cutting winding drums (2). The cutting mechanism of the excavatingmachine and the excavating machine which are provided by the embodiment of the invention, can not only carry out excavating and hoeing operation, but also realize mining milling and excavation, roadway repair and rock breakage, can also ensure that a cutting part swings horizontally and up and down at a large amplitude and meet the requirement for the fixed point cutting of the full section of a wider roadway.

Description

technical field [0001] The invention relates to the technical field of mining equipment, in particular to a cutting mechanism of a roadheader and a roadheader. Background technique [0002] With the rapid development of my country's economic construction, the coal industry continues to develop in the direction of mechanization and automation, and comprehensive mechanized coal mining equipment is more and more widely used in coal production under various geological conditions. In the production operation of mechanized coal mining, the roadheader is one of the main mining equipment, and the excavation of the roadway is realized through the rotary cutting of the cutting head. [0003] But, the inventor finds that existing roadheader has the following deficiencies in the process of implementing the present invention: [0004] 1. Since the roadheader needs to have a better tunneling effect on coal, semi-coal and rock roadways, this restricts and causes the picks of the roadheade...

AI Technical Summary

Problems solved by technology

[0004] 1. Since the roadheader needs to have a better tunneling effect on coal, semi-coal and rock roadways, this restricts and causes the picks of the roadheader to be short and densely arranged, and the rotation speed is low. When the roadheader is working When encountering clay or frozen soil layer, the cutting head is very easy to stick with clay or frozen soil, thus wrapping the pick and making the work impossible

[0005] 2. During the excavation process of the inclined shaft coal mine roadway, the roadheader is mainly used to excavate coal rock, semi-coal rock or rock roadway. The hardness of coal rock and semi-coal rock is low, so the roadheader can usually excavate normally, while the rock The hardness of the roadway is relatively high, and the roadheader can only economically excavate the roadway with low rock hardness.

However, in the process of blasting with explosives, there will be a lot of rock fragments that break out at high speed, which may easily cause damage to the key components of the roadheader. Make the roadheader retreat about 30 meters to 50 meters), and then move the roadheader back to continue working after the blasting is completed

However, the existing roadheaders are bulky, and the related equipment is more complex. When the roadheader moves, the associated equipment also needs to move accordingly. Especially in inclined roadways with large slopes, the transfer of huge working systems is relatively difficult Difficulties, thus virtually increasing the cost of work

For example, "a roadheader" (patent number: CN201010224590.8), although a certain degree of self-protection has been carried out on the roadheader, it is only to keep the equipment "not far away" during the blasting process, and there is no fundamental solution to the problem during the blasting process. The problem that the equipment still needs to be "moved"

[0006] Three, the volume of existing roadheader is huge, and it is inconvenient to use in the mining of small roadways, auxiliary roadways or thinner coal seams in coal mines. Many coal mines implement blast mining in this working condition, and the risk of blast mining is very high. Efficiency seriously affects the speed of tunneling and comprehensive mining

The cutting head and the cutting arm of the cantilever roadheader are closely connected, and it is impossible to replace multiple functional devices to complete multi-functional operations. The materials at the front of the roadheader shovel and the left and right sides need to be fed to the conveying mechanism manually. The operation is slow, which often causes coal mines to accumulate on the front of the shovel plate and the left and right front sides of the machine, which cannot meet the capacity requirements of the conveying mechanism and the equipment utilization efficiency is not enough

However, after the roadheader with the straight-arm cutting arm device completes the roadway cutting, there are many dangerous objects on the top surface and the left and right side surfaces of the roadway, and the flatness is not enough. It needs manual work to complete the removal of dangerous objects and level the surface before proceeding to the next step. For support operations, because these auxiliary loading personnel and personnel who clean and level the top and side of the roadway are in the non-support area of ​​the roadway, the working environment is very dangerous, and the manual operation efficiency is low, which reduces the speed of roadway excavation. Seriously affect the production and benefits of coal mines, and even endanger the lives of workers

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