Oppositely pulling screw bolt and wrench thereof

The utility model discloses an oppositely pulling screw bolt and special wrench thereof in the technical field of the architecture. The oppositely pulling screw bolt has three sections, each two sections can be connected with each other by a conical special nut with screw inner threads, the big cros...

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Bibliographic Details
Main Authors YANG RONGSEN, LI SIBAO
Format Patent
LanguageEnglish
Published 28.07.1993
Edition5
Subjects
BUILDING
BUILDING IMPLEMENTS OR OTHER BUILDING AIDS, OR THEIRUSE
FIXED CONSTRUCTIONS
FORMS
HANDLING BUILDING MATERIALS ON THE SITE
REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTINGBUILDINGS
SCAFFOLDING
SHUTTERING
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Summary:The utility model discloses an oppositely pulling screw bolt and special wrench thereof in the technical field of the architecture. The oppositely pulling screw bolt has three sections, each two sections can be connected with each other by a conical special nut with screw inner threads, the big cross section side of the conical special nut has poking holes whose amount is in even number, and the radial directions of the poking holes are corresponding with each other. The wrench is formed by that two parallel poking needles are perpendicularly and fixedly connected with a horizontal handle. The oppositely pulling screw bolt which is used for fixing a concrete form panel has the advantages of convenient assembly and disassembly. The screw bolts and the special nuts of the two outer sections can be recovered and repeatedly used, and the construction cost is reduced.
Bibliography:Application Number: CN1992219394U