Coal mine blasting protection device convenient to operate

The invention discloses a coal mine blasting protection device convenient to operate. The protection device comprises a base and a connecting disc. First pull rods are arranged on the two sides insidea side protection cover correspondingly, and a storage plate is installed behind the interiors of th...

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Hauptverfasser: YIN ZHENGLIANG, LIU YONG, LENG GUANGHAI
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Sprache:chi ; eng
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creator YIN ZHENGLIANG
LIU YONG
LENG GUANGHAI
description The invention discloses a coal mine blasting protection device convenient to operate. The protection device comprises a base and a connecting disc. First pull rods are arranged on the two sides insidea side protection cover correspondingly, and a storage plate is installed behind the interiors of the first pull rods; first buffer columns are connected to the lower portion of a top plate protection cover, and first springs are installed on the lower portions of the first buffer columns; air permeable holes are formed inside a top plate, and magnet rings are arranged between the top plate and the side protection cover; grooves are formed in the connection positions of the magnet rings and the side protection cover; storage grooves are formed inside the storage plate; and second buffer rodsare arranged at the two ends below a cushion correspondingly, and second springs are installed on the outer sides of the second buffer rods. The coal mine blasting protection device convenient to operate can conduct sealing pr
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language chi ; eng
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subjects AMMUNITION
BLASTING
HEATING
LIGHTING
MECHANICAL ENGINEERING
WEAPONS
title Coal mine blasting protection device convenient to operate
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