A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
An expansion anchor is provided with a hollow shaft 3 and a bolt 9 screwed into the shaft from the proximal-end side. The section of the hollow shaft 3 that is in front of the distal end(3a is an expanding-diameter part 7 having a slit 6, and numerous balls 10 are inserted into the expanding-diameter part 7. When the bolt 9 is screwed in, the balls 10 push against each other and move in the radiation direction. The expanding-diameter part 7 then expandably deforms and digs deep into a lower hole 2. Stress does not concentrate in a specific section of a construction location 1 even when the expanding-diameter part 7 expands, and strong pull-out resistance can therefore be ensured while cone fractures are prevented. The bolt 9 is screwed in with a torque-limiting wrench or the bolt 9 is screwed in with a torque wrench, whereby pull-out resistance can be easily managed.
An expansion anchor is provided with a hollow shaft 3 and a bolt 9 screwed into the shaft from the proximal-end side. The section of the hollow shaft 3 that is in front of the distal end(3a is an expanding-diameter part 7 having a slit 6, and numerous balls 10 are inserted into the expanding-diameter part 7. When the bolt 9 is screwed in, the balls 10 push against each other and move in the radiation direction. The expanding-diameter part 7 then expandably deforms and digs deep into a lower hole 2. Stress does not concentrate in a specific section of a construction location 1 even when the expanding-diameter part 7 expands, and strong pull-out resistance can therefore be ensured while cone fractures are prevented. The bolt 9 is screwed in with a torque-limiting wrench or the bolt 9 is screwed in with a torque wrench, whereby pull-out resistance can be easily managed.
Expansion anchor
HAMADA TOSHIJI (author)
2020-11-12
Patent
Electronic Resource
English
IPC:
E04B
Allgemeine Baukonstruktionen
,
GENERAL BUILDING CONSTRUCTIONS