Stock afterbody protective cover

The utility model discloses a stock afterbody protective cover, establish the side in this caping bottom including caping and a plurality of, each incline ring edge around form in the caping bottom with the consistent polygon of stock nut appearance, all be equipped with a recess that is used for si...

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Bibliographic Details
Main Authors WANG XINGSI, TANG KE, WANG YONG, WU ZONGLI
Format Patent
LanguageChinese
English
Published 13.03.2018
Subjects
EARTH DRILLING
FIXED CONSTRUCTIONS
GALLERIES
LARGE UNDERGROUND CHAMBERS
MINING
SHAFTS
TUNNELS
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Summary:The utility model discloses a stock afterbody protective cover, establish the side in this caping bottom including caping and a plurality of, each incline ring edge around form in the caping bottom with the consistent polygon of stock nut appearance, all be equipped with a recess that is used for side production elastic extension in the department of meeting of every side and side. The utility model discloses a set up a plurality of sides bottom a caping, utilize every side to meet the recess of a setting and design the polygon that completely break off consistent with stock nut appearance with it, through this design can be effectively each side of the continuous polygon of elimination between mutual restraining force, make every side produce elastic extension to the outside under the effect of external force, thereby effectual straining is on the stock nut that has various tolerance size, the protection waterproof board can not be by the afterbody bursting that the stock is sharp -pointed, thereby it keeps
Bibliography:Application Number: CN20172683797U