Stretching jack
A technology for tensioning jacks and cylinders, applied in the direction of lifting devices, etc., can solve the problems of high cost of the prestressed tendon tensioning system, long working length of the tensioning bars, large anchor holes of the tensioning system, etc. Small shrinkage and low stress loss
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[0024] Such as Figure 1-3 As shown, a tension jack includes a cylinder body 6, and one end of the cylinder body 6 equipped with a support 10 is connected with an end cover 14, which is convenient for installing parts in the inner cavity of the cylinder body, and the other end of the cylinder body 6 is connected with a large gear through a bearing 13. There is a sleeve at one end of the large gear 13, and an intermediate wheel 18 meshing with it is located on one side of the large gear 13. One end of the gear shaft 7 with a square head is installed on the support 10, and the other end of the gear shaft 7 is fixedly connected. There is a small gear 3 meshing with the intermediate wheel 18, and the small gear 3 meshing with each other. The intermediate wheel 18 and the large gear 13 are installed in the gearbox 2. The gearbox 2 is formed by connecting the left and right boxes through the hexagon socket connection screws 17. , the sleeve of the large gear 13 is fitted with a load...
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