Full section is recoverable stock of wedge type

The utility model provides a full section is recoverable stock of wedge type, the structure is including the body of falling the tapered bar, the setting wedge body of rod, backing plate, nut four bibliographic categories branch. All there is cockscomb structure convex -concave structure its charact...

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Bibliographic Details
Main Author SU JINGLEI
Format Patent
LanguageEnglish
Published 09.12.2015
Subjects
EARTH DRILLING
EMBANKMENTS
EXCAVATIONS
FIXED CONSTRUCTIONS
FOUNDATIONS
GALLERIES
HYDRAULIC ENGINEERING
LARGE UNDERGROUND CHAMBERS
MINING
SHAFTS
SOIL SHIFTING
TUNNELS
UNDERGROUND OR UNDERWATER STRUCTURES
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Summary:The utility model provides a full section is recoverable stock of wedge type, the structure is including the body of falling the tapered bar, the setting wedge body of rod, backing plate, nut four bibliographic categories branch. All there is cockscomb structure convex -concave structure its characterized in that body of falling the tapered bar and setting wedge body of rod side. Put into the punchhole to the body of falling the tapered bar and the combination of the setting wedge body of rod together during the use, through the pretension nut, the relative changing of the relative positions takes place for the body of falling the tapered bar, the setting wedge body of rod for the body of rod and the contact of punchhole wall, and then play the anchored effect. Back out the nut during recovery, to the downthehole hammering setting wedge body of rod, the former state that staggers of the body of falling the tapered bar and the setting wedge body of rod closes the reality gradually, and the body of rod breaks away from with the punchhole wall, and extract the body of falling the tapered bar and the setting wedge body of rod can.
Bibliography:Application Number: CN20152661148U