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Title:
IMPACT DEVICE FOR WEARPROOF SEALING PROTECTIVE SLEEVE OF TOOTH RACK OF MINING MACHINE
Document Type and Number:
WIPO Patent Application WO/2017/121407
Kind Code:
A1
Abstract:
Provided is an impact device for a wearproof sealing protective sleeve of a tooth rack of a mining machine, wherein the wearproof sealing protective sleeve (2) for the tooth rack is arranged at a rear part of an impact tooth rack (1); the wearproof sealing protective sleeve (2) for the tooth rack is of an integral sealing protective sleeve for the tooth rack or a split sealing protective sleeve for the tooth rack; the split sealing protective sleeve for the tooth rack comprises a split external wearproof sealing protective sleeve (68); the split external wearproof sealing protective sleeve (68) is arranged outside a protective cover (3) for a box body guide rod; a protective sleeve sealing part (9) for the tooth rack is arranged between the wearproof sealing protective sleeve (2) for the tooth rack and the protective cover (3) for the box body guide rod; the protective sleeve sealing part (9) for the tooth rack is an annularly closed protective sleeve sealing part for the tooth rack and/or an open protective sleeve sealing part for the tooth rack; when the wearproof sealing protective sleeve (2) for the tooth rack is arranged outside the protective cover (3) for the box body guide rod, a wearproof face (17) of an inner cavity of the tooth rack sealing sleeve is fitted with the protective sleeve sealing part (9) for the tooth rack in a sealing manner; and the distance between a front end face (8) of a protective cover of the box body guide rod and an end face (10), towards the protective cover of the box body guide rod, of the wearproof sealing protective sleeve (2) for the tooth rack is greater than the reciprocating impact stroke. The device ensures the long-period cleanness of a lubricating medium in a power box body (6) and prolongs the service life of the reciprocating impact type mining machine.

Inventors:
LIU, Suhua (ZHANG Shide, No.1 Zhenxing Road, Xinyan Tow, Jining Shandong 0, 272100, CN)
Application Number:
CN2017/071325
Publication Date:
July 20, 2017
Filing Date:
January 16, 2017
Export Citation:
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Assignee:
LIU, Suhua (ZHANG Shide, No.1 Zhenxing Road, Xinyan Tow, Jining Shandong 0, 272100, CN)
International Classes:
E21C35/00
Foreign References:
CN105971600A2016-09-28
CN104420870A2015-03-18
EP0200037A21986-11-05
CN204283425U2015-04-22
US2677537A1954-05-04
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