Powerful drum of coal cutter

Abstract

The invention relates to a powerful drum of a coal cutter. The powerful drum comprises a drum body (8), a combined main blade (4) and an end disc (6), wherein small blades (9) are arranged at the tail part of the combined main blade (4); the bottoms of the small blades (9) are fixedly welded with the drum body (8); a water inlet channel (402) is formed inside the combined main blade (4); a group of spray holes (401) is formed in the side face of the tail part; the spray holes (401) are communicated with the water inlet channel (402); the spraying direction moves along the axial direction of the drum body; auxiliary blades (2) are arranged on the combined main blade (4); a sealing plate (3) is arranged between the auxiliary blades (2) and the combined main blade (4); a rib plate (5) is fixedly arranged between the combined main blade (4) and the drum body (8); the end disc (6) is welded on the drum body (8); and a wear-resistant plate (7) and small end disc cutting teeth (10) are arranged on the outer side of the end disc (6) along the axial direction of the drum body. According to the powerful drum of the coal cutter disclosed by the invention, the strength and wear resistance of the coal cutter drum are enhanced, and the service life of the drum is prolonged.

Description

technical field [0001] The invention relates to a coal shearer, in particular to a coal shearer powerful drum, which belongs to the technical field of coal shearer drums. Background technique [0002] In the coal mining face, with the improvement of high-yield and high-efficiency work, the working reliability of the shearer is increasing. During the use of the spiral drum, the tail of the drum blade is often cracked, the main blade is deformed, and the coal outlet at the blade tail is severely worn. , Serious wear of the tooth seat of the end plate, etc., especially when the knife is fed obliquely, the end plate is in contact with the coal wall, resulting in wear of the end plate, wear of the tooth seat and other faults, and also sharply increases the cutting resistance and vibration. Affect the normal operation of the shearer. Therefore, it is necessary to take measures to strengthen the strength and wear resistance of the drum, improve the service life of the drum, and en...

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is: the existing shearer drum often has problems such as cracking of the tail of the drum blade, deformation of the main blade, serious wear of the coal outlet at the tail of the main blade, and serious wear of the end plate tooth seat during work, especially When obliquely cutting the knife, the end plate is in contact with the coal wall, causing the wear of the end plate and the wear of the tooth seat. At the same time, it also causes a sharp increase in cutting resistance and vibration, which affects the normal operation of the shearer.

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