Movable belt adjusting device

Abstract

The invention discloses a movable belt adjusting device. A stress rod piece is fixed on a belt frame; a balance rod piece is rotationally mounted on the stress rod piece; two balance auxiliary piecesare mounted at the front and back ends of the balance rod piece; a belt penetrates through the balance auxiliary pieces at the front and back ends in sequence in a bonding mode, so that the balance auxiliary pieces at the front and back ends are staggered corresponding to the upper and lower positions of the belt; one side of a first adjusting pull rood is connected with the balance rod piece; oneside of a second adjusting pull rod is connected with a scraper; the other sides of the two adjusting pull rods penetrate through a belt frame, and adjusting limiting pieces are arranged on the sides; two adjusting springs sleeve the two adjusting pull rods; and the two ends of the adjusting springs are ejected against the belt frame and the adjusting limiting pieces. The device can inhibit flexible deformation and operation vibration of the belt in the operation process, prevents the wear acceleration caused by nonuniform stress of the scraper, and guarantees the scraping effect.

Description

technical field [0001] The invention relates to the field of shield tunnel construction, in particular to a movable belt adjustment device used for excavation by belt conveyors of earth pressure balance shield machines. Background technique [0002] Conveyor belts are widely used in the market. Generally, a driving wheel drives a belt to rotate on a row of rollers, and the tension of the belt is adjusted by changing the position of the driving wheel or the driven wheel. In the shield industry, the belt used by the shield machine is generally long and is a flexible strip, which is supported by a row of rollers for operation under its own weight. The change in the amount of muck loaded on the belt during operation will change the tightness of the belt. When the belt is prone to flexible deformation and vibration. Belt conveyors generally use 2-3 mud scrapers at the driving wheel. Under the vibration and gravity of the belt, the mud scrapers are prone to uneven force, resultin...

AI Technical Summary

Problems solved by technology

Belt conveyors generally use 2-3 mud scrapers at the driving wheel. Under the vibration and gravity of the belt, the mud scrapers are prone to uneven force, resulting in accelerated wear, and easy to form concave or wavy grooves in the middle, affecting The use effect and service life of the mud scraper. In addition, when excavating in complex strata, the viscosity of the muck varies. When encountering highly viscous muck, the mud scraper cannot fit the belt due to the flexible deformation of the belt. Tight, so it is difficult to scrape off the dregs, and the use effect is not ideal

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