Spiral elevator based on planet roller screw

Abstract

The invention provides a spiral elevator based on a planet roller screw, and belongs to the technical field of spiral elevators. The spiral elevator based on the planet roller screw comprises a box body, a worm wheel and worm mechanism, a planet roller screw mechanism, a cylindrical roller thrust bearing, an oil scraping plate, a bearing end cover, related connecting pieces and the like. The planet roller screw mechanism is formed by a screw rod, a pin roller, a nut, an inner gear ring, a holder and a holder pressing plate; the nut and a worm wheel structure are integrated; and the oil scraping plate and the screw rod are in sliding fit, so that the sealing performance of the spiral elevator is ensured. During work, a worm shaft transmits the motor output torque to a worm wheel and the nutso as to drive the pin roller to move planetarily without axial displacement, so that the screw rod further lifts up and lowers down. According to the spiral elevator based on the planet roller screwprovided by the invention, a core transmission part is a planet roller screw structure with multiple screw-thread contact points, so that a rated dynamic load and a rated static load are greatly improved, and the spiral elevator based on the planet roller screw has the advantages of high shock resistance, stability in transmission, high carrying capacity, high transmission accuracy, high transmission efficiency, long service life and the like.

Description

technical field [0001] The invention relates to a screw lift based on a planetary roller screw, belonging to the technical field of screw lifts. Background technique [0002] As a kind of modern lifting equipment, screw jack has a wide range of application fields, including lifting stage, synchronous lifting platform, radar adjustment device, tank door opening, carton stacking machine and concrete steel formwork adjustment and other fields. As the most widely used product, screw jacks are also developing very rapidly, and their operating speed, carrying capacity and safety in use are increasingly becoming the focus of attention. Therefore, improving the operating speed, carrying capacity and safety of screw jacks Performance matters. [0003] At present, the screw jack is mainly driven by a trapezoidal screw screw and a ball screw. The existing trapezoidal thread lead screw transmission is in surface contact, and the friction force is large, so that the parts are easy to w...

AI Technical Summary

Problems solved by technology

The existing trapezoidal threaded screw transmission is surface contact, with high friction, which makes the parts easy to wear and low transmission efficiency

The existing ball screw screw jack has the advantages of strong impact resistance, high strength, low noise, long life and small size, but because only part of the balls participate in the contact during the working process, the transmission efficiency is low, and the mechanism also needs a circulation device , the noise is severe during high-speed operation, and the temperature rises rapidly

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