Rolling wheel of elevator landing door system
A landing door and elevator technology, applied to the rollers of the elevator landing door system. It can solve the problems of foreign object wear, high cost of rollers, high unit price of standard bearings, and achieve the effects of low production cost, small limitations and long service life.
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[0013] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.
[0014] like figure 1 As shown, the roller of an elevator landing door system provided in this embodiment includes a metal roller frame 1, the cross-section of the metal roller frame 1 is T-shaped, and the longitudinal portion 3 is a hollow structure, and the longitudinal portion 3 The upper through hole 5 on the same side as the transverse part 4 is provided with a limit ring 6 extending radially toward the through hole 5, and the inner hole wall of the through hole 5 is provided with a first arc-shaped ring groove. 7. A metal bushing 8 is arranged in the above-mentioned through hole 5, and the outer surface of the metal bushing 8 is provided with a second arc-shaped ring groove 9 opposite to the above-mentioned first arc-shaped ring groove 7, and Balls 10 are annularly distributed in the cavity formed by the first arc-shaped annular groove 7 and the s...
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Abstract
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