Steel wire drawing and hole cleaning device assembly for replacing old lifting rod of arched bridge pre-stressed boom and method for dismounting old lifting rod
A hole cleaning device and hanger technology, which is applied in bridges, bridge maintenance, bridge reinforcement, etc., can solve the problems of being easily stuck in the gap between steel wires and cable guides, high manual work intensity, and high cost, so as to facilitate standardized construction and manpower The effect of low work intensity and fast progress
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Embodiment 1
[0022] A steel wire drawing and hole cleaning device assembly for replacing the old suspender of a suspender arch bridge, such as figure 1 As shown, the device assembly includes a working steel strand 1, a tension jack 2, an upper leg 3, a lower leg 4, an upper connector 5, a connecting rod 6 and a lower connector 7 connected in sequence;
[0023] In use state: the lower end of the lower connector 7 is connected to the steel wire 8 to be drawn, and the upper end is respectively connected to the connecting rod 6, the upper connector 5, and the working steel strand 1 in turn, and the upper end of the upper connector is connected to the working steel strand 1 by clip anchoring , the lower end of the upper connector is connected to the upper end of the connecting rod 6 in a threaded manner; the lower end of the lower connector 7 is connected to the drawing steel wire 8 to be replaced by a pier head anchoring method, and the upper end of the lower connector 7 is connected to the l...
Embodiment 2
[0026] A method for extracting steel wires and clearing holes for dismantling old suspenders of arch bridges, which uses the steel wire drawing and hole cleaning device assembly for replacing the old suspenders of suspenders arch bridges described in Embodiment 1 to remove the old suspenders of arch bridges The method of drawing steel wires and clearing holes, that is: using the device components to use hydraulic tension jacks to draw wires, and then single-drawing the steel wires or steel strands of the old suspenders of the arch bridge and then clearing the holes. The specific method and steps are as follows: :
[0027] A. The driving force is provided by the hydraulic tensioning jack, and the working steel strand is used as the tensioning part of the jack; the connection mode between the working steel strand and the steel wire to be pulled out of the old suspender of the arch bridge is upper connector + connecting rod + lower connection device;
[0028] B. The upper end of...
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