Heading machine and water-cooled cutting arm thereof

Abstract

The invention discloses a heading machine and a water-cooled cutting arm of the heading machine. The water-cooled cutting arm comprises a coupling barrel, a front bearing used for supporting a spindle in the coupling barrel, and a bearing gland which is connected to the end of the coupling barrel and is used for axially positioning the front bearing, wherein a side wall of the coupling barrel and a side wall of the bearing gland are provided with cooling water channels which are communicated with each other; and a water inlet and a water outlet are formed on the cooling water channel. The cooling water channel is formed in the coupling barrel, and a cooling temperature control member is not required to be arranged on the outer side of the coupling barrel, so that the structure of the cutting arm is simplified, and the problem that the cooling water easily leaks because the water jacket is required to be welded or mounted with the coupling barrel is solved.

Description

technical field [0001] The invention relates to the field of engineering machinery, in particular to a boring machine and a water-cooled cutting arm thereof. Background technique [0002] At present, the cutting arm of the roadheader generally adopts a natural cooling method, but with the continuous increase of the cutting power of the motor of the roadheader, the temperature of the oil cavity inside the cutting arm continues to rise. The temperature of the oil chamber inside the cutting arm rises rapidly. If the oil quality or oil quantity is not well controlled, the temperature of the oil chamber inside the cutting arm can easily reach above 100 degrees, which will cause the main seal of the bearing to be damaged in advance, and the oil leakage of the cutting arm will occur. phenomenon and cannot work normally, the cutting arm must be disassembled for maintenance, which greatly affects production. Therefore, it is necessary to cool and control the cutting arm of the high-...

AI Technical Summary

Problems solved by technology

[0004] It can be seen that although the water-cooling structure can achieve the temperature control purpose of the cutting arm, since the water-cooling structure is to add large-scale cooling and temperature-controlling components (water jacket and water plate) on the outside of the cantilever tube of the cutting arm, the water jacket The arrangement of the water plate and the water plate not only leads to a complicated structure of the cutting arm, but also because the water jacket and the water plate constituting the cooling water chamber are welded or installed on the outer wall of the cantilever tube of the cutting arm, it is difficult to achieve reliable sealing of the cooling water, which will be caused by Leakage of cooling water affects the normal operation of the roadheader

Images