Superlong prestress strand combing, binding and strand pulling integrated device
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A technology of prestressed steel strand and beam threading, which is applied in the field of ultra-long prestressed steel strand combing and beam threading integrated devices, which can solve the problems of inability to thread thread at the same time, inappropriateness, etc., and improve the efficiency of beam threading and quality, save labor, and ensure the effect of quality
Inactive Publication Date: 2014-03-26
CHINA CONSTR THIRD ENG BUREAU GRP CO LTD
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However, the device is only suitable for combing and braiding of general prestressed steel strands. Used in prestressed beam combing and beam threading
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[0020] like Figure 1-3 As shown, an integrated device for combing, weaving, and threading of super-long prestressed steel strands, including a hoist traction wire rope 1, a draw bar 3, a snap ring 2 connecting the steel wire rope and the draw bar, and a harness threading sleeve set at one end of the draw bar 4. The comb plate and the base 7 located at the bottom of the comb plate, also includes a fixing hoop 8 fixed on the outside of the top of the comb plate, and a sealing plate 13 located in the middle of the comb plate.
[0021] The traction rod 3 is a tapered traction rod with a total length of 300mm-400mm, a tapered head at the rear end of which the length is 120mm-180mm, and the diameter of the tapered head gradually changes from 35mm-45mm to 15mm-20mm.
[0022] The beam-through sleeve 4 is a bullet-shaped beam-through sleeve, the length of the steel pipe at the rear end of the beam-through sleeve is 100mm-140mm, the inner diameter is 90mm-140mm, and the wall thickness ...
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Abstract
The invention discloses a superlong prestress strand combing, binding and pulling integrated device, relates to the field of tools for combing, binding and pulling of steel strands in highway bridges, and aims to provide a superlong prestress strand combing, binding and pulling integrated device which is easy and convenient to operate, saves cost and can greatly improve strand pulling efficiency and quality. The superlong prestress strand combing, binding and pulling integrated device comprises a winch load cable (1), a traction bar (3), a clamping ring (2), a strand pulling sleeve (4), a strand combing plate, a base, a fixing hoop (8) and a sealing plate (13), wherein the load cable and the traction bar are connected through the clamping ring (2), one end of the traction bar is sleeved with the strand pulling sleeve (4), the base (7) is located at the bottom of the strand combing plate, the fixing hoop (8) is fixed to the outer side of the top end of the strand combing plate, and the sealing plate (13) is located in the middle of the strand combing plate. The superlong prestress strand combing, binding and pulling integrated device can be widely applied to all prestress strand pulling construction through a post-tensioning method, and particularly superlong prestress strand combing, binding and pulling of suspension casting segmental box girders of prestressed concrete large-span cable-stayed bridges, suspension bridges and continuous girder bridges. Strand pulling, combing and binding are integrated, so that the strand pulling efficiency and quality can be greatly improved.
Description
technical field [0001] The invention relates to a tool for combing and threading steel strands in highway bridges, in particular to an integrated device for combing and threading ultra-long prestressed steel strands. Background technique [0002] At present, with the development of prestressed concrete cable-stayed bridges, suspension bridges and continuous girder bridges in the direction of large spans, the last few sections of cantilevered box girders are poured in sections and stretched in batches. . For ultra-long beams, the ends of the whole beam of steel beams are usually welded together and then pulled by a hoist. In this way, the steel strands are easy to encounter electric welding sparks, easy to break when stretched, and the burrs at the ends are easy to damage the bellows. Additional engineering work is required for the welding ends, and the steel strands are not combed, and the steel strands are easy to cross Knotted, uneven force after tension, easy to cause t...
Claims
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