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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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 |
format | Patent |
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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. 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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. 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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</abstract><oa>free_for_read</oa></addata></record> |
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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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