Adjustable expansion bolt

The utility model discloses an adjustable expansion bolt which is composed of a bolt expansion rod head, a first-stage expansion sleeve head, a second-stage expansion sleeve, a one-way thread lock sleeve and a reverse adjusting thread sleeve. The first-stage expansion sleeve head and the second-stag...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	WANG CHANG, LIU YAN, ZHOU HUA, XIE YIHU, TU WEI, WANG ZHENJUN, YANG LILI, CHEN ZHONGLAN, XIONG BICHAO
Format:	Patent
Sprache:	chi ; eng
Schlagworte:	BLASTING DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS ORMACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS,CLIPS, WEDGES, JOINTS OR JOINTING ENGINEERING ELEMENTS AND UNITS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING LIGHTING MECHANICAL ENGINEERING THERMAL INSULATION IN GENERAL WEAPONS
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Beschreibung
Zusammenfassung:	The utility model discloses an adjustable expansion bolt which is composed of a bolt expansion rod head, a first-stage expansion sleeve head, a second-stage expansion sleeve, a one-way thread lock sleeve and a reverse adjusting thread sleeve. The first-stage expansion sleeve head and the second-stage expansion sleeve are both arranged on the outer wall of the bolt expansion rod head in a sliding and sleeved mode. The outer wall of one end of the bolt expansion rod head is in threaded connection with the inner wall of the one-way threaded lock sleeve, the bolt expansion rod head sequentially penetrates through the first-stage expansion sleeve head, the second-stage expansion sleeve and the one-way threaded lock sleeve, and the outer wall of the end of the one-way threaded lock sleeve is in threaded connection with the inner wall of the reverse adjusting threaded sleeve. A common expansion bolt thread sleeve of an original common expansion bolt is redesigned into the reverse adjusting thread sleeve, and the sec