A Tooth Seat Structure of a Cantilever Type Tunneling Machine Pick

Abstract

The invention discloses a pick seat structure of cutting pick of a cantilever type heading machine. The pick seat structure comprises a pick seat body, the cutting pick is arranged at an opening of the pick seat body, cleaning racks are fixedly arranged on extension rods, cleaning gears are arranged on the cleaning racks movably in a meshing mode, and cleaning discs are fixedly arranged at the end, away from driven bevel gears, of rotating rods; and an adjusting device is arranged in an inner cavity of the pick seat body, the adjusting device comprises sliding rails, abutting rods are movablyarranged on the sliding rails, a moving rack is fixedly arranged between symmetric supporting rods, and a moving gear is movably arranged on the moving rack. According to the pick seat structure of the cutting pick of the cantilever type heading machine, the internally arranged cutting pick can be arranged in an interference mode, the effective length of the cutting pick is increased through a device in a pick seat after use abrasion, the use time is prolonged, a structure for cleaning a connecting part of the cutting pick and the pick seat can be further automatically triggered while the cutting pick is adjusted, and rigid breaking caused by locking of the cutting pick and the pick seat caused by impurity dust is prevented.

Description

technical field [0001] The invention relates to the technical field of tooth holders for roadheaders, in particular to a tooth holder structure for cantilever-type roadheader picks. Background technique [0002] In the prior art, a pick holder assembly for the cutting head of a roadheader with the application number "201820243216.4" includes: a pick holder, a pick, a sleeve, a gasket, a retaining ring and a sealing ring. On the tooth seat, the tooth sleeve is arranged inside the pick seat and outside the pick, and the tooth sleeve and the pick seat are transitionally fitted; the washer is arranged at the bottom end of the tooth sleeve, and the retaining ring is arranged at the bottom end of the pick seat; the tooth sleeve The outer side of the tooth sleeve is a stepped structure and the top is a protruding end. The inner side of the pick holder is provided with a step hole corresponding to the protruding end; Sealed in the groove and pressed against the pick, the cutting he...

AI Technical Summary

Problems solved by technology

[0003] But it still has comparatively obvious defectives in use: 1, the pick in the above-mentioned device is fixedly arranged, and the pick is very easy to wear and tear after long-time use, causes need often to change pick or tooth seat, not only The cost of using the roadheader will increase, and the construction time will be delayed due to the inconvenience of replacement; 2. Due to the reaction force received by the pick in the tooth seat when cutting the coal seam, the pick will also rotate by itself, and the pick seat will The components work in the cut coal and coal powder. Due to the intrusion of dust impurities, the tooth seat and the pick are easy to lock, resulting in the hard break of the pick. The sealing groove in the above device still has the possibility of dust accumulation. Timely cleaning and dust removal

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