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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Main Authors | , |
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Format | Patent |
Language | English |
Published |
28.07.1993
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Edition | 5 |
Subjects | |
Online Access | Get full text |
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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. |
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Bibliography: | Application Number: CN1992219394U |