Pretensioner for form cable

A pre-tensioning and formwork technology, which is used in the connection of formwork/formwork/work frame, the on-site preparation of building components, construction, etc. simple effect
CN102561684AInactive Publication Date: 2012-07-11CHINA CONSTR SEVENTH ENG BUREAU THE SECOND CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
CHINA CONSTR SEVENTH ENG BUREAU THE SECOND CO LTD
Publication Date
2012-07-11
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a pretensioner for a form cable, which comprises an outer sleeve, an inner sleeve, a crescent scale and a handle cap. Both the inner sleeve and the outer sleeve are hollow tubes, the inner diameter of the outer sleeve is larger than the outer diameter of the inner sleeve, an elongated slot is reserved in the middle of the outer sleeve, the upper portion of the inner sleeve is provided with an external thread, the lower portion of the inner sleeve is provided with another elongated slot, the inner sleeve is sleeved inside the outer sleeve, and the upper portion of the inner sleeve extend out of the upper end of the outer sleeve. The handle cap with an internal thread is connected with the extending end of the inner sleeve in a threaded manner, and is provided with a handle socket. A bent part of the crescent scale in an L shape is hinged to the lower end of an opening of the elongated slot of the inner sleeve, one edge of the back of the crescent scale is semicircular, the semicircular edge is provided with ratchets, and the other edge of the back of the crescent scale is flat and straight. The pretensioner for the form cable is simple in structure and quick in assembly and disassembly, and can be operated by single users.
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Description

[technical field]

[0001] The invention relates to an auxiliary tool for installing building formwork cables, in particular to a formwork cable pretensioning device. [Background technique]

[0002] Traditionally used for locking and anchoring the formwork is to use the pull screw, which locks the two ends of the screw through the mountain-shaped card and locks the formwork outside the formwork to fix it.

[0003] At present, the flat cable buckle and the butterfly cable buckle are new clamps that replace the traditional mountain clamps, and the flat cable buckle and the butterfly cable buckle can directly use the round steel cable, and there is no need to set threads at both ends of the cable to become a pull screw. Lock the cable directly with the wedge pin. Compared with the traditional threaded tie rod, not only the nut and gasket are canceled, but also the operation mode of the traditional formwork tie rod is changed. It does not need thread sprouting processing on roun...

Claims

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