Steel strand tensioning device for prestressed anchorage device
A technology of tensioning device and steel strand, which is applied in the direction of erecting/assembling bridges, bridges, buildings, etc., which can solve the inconvenient assembly of multiple steel strands that cannot be tensioned synchronously, bridge concrete, fixed anchor plates and steel strands , Unable to guarantee the tension adjustment stability and other issues, to achieve the effect of improving the scope of application, not easy to rebound, not easy to break free
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Embodiment 1
[0037] Such as Figure 1-2 , Figure 4 As shown, the present embodiment provides a steel strand tensioning device for prestressed anchorage, including a pre-embedded pipe 10 pre-installed in the bridge concrete 100, and the exterior of the pre-embedded pipe 10 is wound with a spiral rib 11, and the pre-embedded A plurality of steel strands 12 are arranged inside the pipe 10, and a sleeve 20, a guide seat 30, a fixed anchor plate 40, and a tension control mechanism 50 are arranged on the outside of the pre-embedded pipe 10 in sequence, and the sleeve 20 is arranged in the bridge concrete 100, The guide seat 30 extends out of the bridge concrete 100 . The steel strand 12 extends to the outside of the fixed anchor plate 40 after passing through the sleeve 20 , the guide seat 30 , and the fixed anchor plate 40 .
[0038] The tension control mechanism 50 includes a fixing mechanism 51, a fixing frame 52, and a jack 53. The two fixing mechanisms 51 are arranged at the end face of ...
Embodiment 2
[0043] Such as Figure 1-3 As shown, the steel strand tensioning device for a prestressed anchor provided in this embodiment differs from that of Embodiment 1 in that the steel strand 12 protrudes from the outer periphery of the fixed anchor plate 40 and is fixed with an extruded anchor 41, The tensioning mechanism includes a clamping cylinder 56 and a clamping plate 57 arranged on the inner surface of the mounting plate 55. The inner cavity of the clamping cylinder 56 is provided with a clamping cavity 561 for clamping the extrusion anchor 41. The clamping cylinder 56 A passage cavity 562 runs through the outer wall of the body, and a continuous wear-resistant protrusion 563 is provided on the inner wall of the passage cavity 562 .
[0044] The clamping plate 57 is U-shaped and includes a passing plate 571 and side plates 572 arranged on both sides of the passing plate 571 , the passing plate 571 passes through the passing cavity 562 , and the end of the side plate 572 is fix...
Embodiment 3
[0048] Such as Figure 1-2 , Figure 4 , Figure 6-7 As shown, the sleeve 20 is provided with a set of first limiting members 21 for limiting the unbent steel strand 12, and a set of second limiting members for limiting the bent steel strand 12. Limiting piece 22. The first limiting member 21 has the same structure as the second limiting member 22, both including a fixed seat 23, a roller 24 and a rotating shaft 25, the roller 24 is arranged on the fixed seat 23, the rotating shaft 25 runs through the axis of the roller 24 and The roller 24 can be driven to rotate, and the outer surface of the roller 24 is in pressure contact with the steel strand 12 .
[0049] The first limiter 21 limits the unbent steel strand 12, and the second limiter 22 limits the bent steel strand 12. In the process of tensioning the steel strand 12 In the process, the steel strand 12 placed in the sleeve 20 is compressed by the roller 24, and can rotate around the rotating shaft 25, which simultaneo...
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