Boosting type bellow expansion joint
2014
The utility model discloses a boosting type bellow expansion joint. The boosting type bellow expansion joint is composed of an expansion joint body and boosters together. The expansion joint body comprises a bellow pipe and flanges connected with the two ends of the bellow pipe. Each booster comprises a threaded rod and a spring which are arranged in a pipe sleeve, wherein the portion, extending out of one end of the pipe sleeve, of the threaded rod is matched with a nut, and an axial adjustment structure for the spring in the pipe sleeve is formed by rotating the nut. The boosters are arranged on the portion, located on the same circumference outside the outer wall of the bellow pipe, between the flanges at the two ends of the expansion joint body. The axes of the boosters are parallel to the axis of the bellow pipe. The tail end of the pipe sleeve of each booster is connected with the opposite flange in a positioning mode. The portion, extending out of the other end of the corresponding pipe sleeve, of each threaded rod is locked and connected after extending into a matched flange matching hole. The linkage compensation structure for a linked body of the expansion joint body and the boosters is obtained. The boosters are organically applied to the expansion joint body, the boosters play a buffering and shock absorbing role after the expansion joint body and the boosters are combined, the loads of the bellow pipe built in the expansion joint body are shared, and the problem of the overloading of the bellow pipe is effectively solved. The boosting type bellow expansion joint is suitable for being used as various specifications of expansion joints.
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