Rolling wheel of elevator landing door system

Abstract

The invention discloses a rolling wheel of an elevator landing door system. A metal shaft sleeve is arranged in a through hole, a second arc-shaped annular groove corresponding to a first arc-shaped annular groove is formed in the outer surface of the metal shaft sleeve, and balls are annularly distributed in a chamber formed by the first arc-shaped annular groove and the second arc-shaped annular groove together. The longitudinal part of a metal rolling wheel framework is sleeved with a Teflon outer ring, and one side face of the Teflon outer ring is in blocking connection with the transverse part of the metal rolling wheel framework. The longitudinal part of the metal rolling wheel framework is further sleeved with a metal backup shoe, and the metal backup shoe is located on the other side of the Teflon outer ring and is connected to the end face of the longitudinal part in a fastened manner. The technical aim of reducing the production cost of the rolling wheel of the elevator landing door system is achieved, and the beneficial effects that production cost is relatively low, the limitation of the specification and dimension of the product is small, and meanwhile the service life is long are achieved.

Description

technical field [0001] The invention relates to a roller fitting, in particular to a roller of an elevator landing door system. Background technique [0002] Elevator rollers are used very frequently throughout the elevator system, such as in the door lock assembly of the elevator landing door system. [0003] At present, the structure of the roller of the existing elevator landing door system roughly includes a standard bearing, a roller bearing seat and a rubber / plastic outer ring. The production process is as follows: First, the rubber / plastic outer ring is injected outside the roller bearing seat, usually as The rubber / plastic outer ring is exposed as a whole, then the standard bearing is put into the roller bearing seat, and finally the standard bearing is riveted with the roller bearing seat. [0004] The rollers of the elevator landing door system with the above structure have the following defects: first, the unit price of the standard bearing is relatively high, wh...

AI Technical Summary

Problems solved by technology

[0004] The rollers of the elevator landing door system with the above structure have the following defects: First, the unit price of standard bearings is relatively high, resulting in a relatively high cost of the rollers of the entire elevator landing door system; There are limitations in the specifications and dimensions of the rollers of the door system; in addition, the overall exposed structural design of the rubber / plastic outer ring, considering the relatively soft material of the rubber / plastic outer ring, is easy to be worn by foreign objects

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