A device for quickly replacing the damaged tooth seat of the cutting head with high precision on site

Abstract

The invention provides a device for quickly replacing a damaged gear seat of a cutting head with high precision on site, which belongs to the technical field of maintenance devices for a cutting head in coal mines, wherein the top end of the metal bracket is welded on the cantilever bracket, and the bottom end is welded on the surface of the cutting head The cantilever bracket is provided with a mounting hole, and the 0° line is etched on the upper end surface; the corner connecting rod passes through the mounting hole, the rod body is engraved along the circumferential direction, and the first through hole is set on the side wall; the positioning axis of the tooth seat is Bending rod-shaped structure, the top is inserted into the bottom end of the corner connecting rod and clamped with it, the bottom end fits the end surface of the tooth seat, the rod body near the bottom end is engraved along the circumferential direction, and the second through hole is set on the side wall The shaped post of the tooth seat is passed through the hole of the tooth seat; the mounting screw passes through the shaped post of the tooth seat and is screwed into the positioning shaft of the tooth seat; the locking handwheel passes through the first through hole and the second through hole. After the cutting head is lifted into the well, the device can perform high-precision and rapid replacement of the worn tooth seat without the manufacturer providing manufacturing parameters, and realizes the on-site rapid maintenance of the cutting head.

Description

technical field [0001] The invention belongs to the technical field of maintenance devices for coal mine cutting heads, and specifically discloses a device for quickly replacing a damaged tooth seat of a cutting head with high precision on site. Background technique [0002] Coal mine cutting head is the key device for excavating roadway of roadheader. The pick is installed in the hole of the tooth seat of the cutting head, and the tooth seat is welded on the surface of the cutting head body. Since the hardness of the pick is higher than that of the rock, when the pick interacts with the rock, the rock is cut off and the pick wears to a certain extent. When the wear of the pick has accumulated to a certain extent and cannot be replaced in time, the pick will not be able to protect the tooth seat by cutting the groove produced by cutting the rock, and eventually the tooth seat will contact the rock and wear rapidly. After the tooth seat is worn out, it may not be possible to...

AI Technical Summary

Problems solved by technology

Since the tooth seat is arranged in different spatial postures according to the specially designed helix on the cutting head, and the space posture parameters of the pick belong to the internal technical documents of the company, therefore, the tooth seat of the cutting head with tooth seat wear must be Returning to the factory for maintenance, the time cost and maintenance cost are relatively high

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