Fire-proof wheel and production technology thereof

A technology of rollers and wheel cores, used in elevators, shafts and bearings, transportation and packaging, etc., can solve the problems of nylon material with high friction coefficient, no fireproof function, and easy noise generation.

CN102705356AInactive Publication Date: 2012-10-03NINGBO HUALING ELEVATOR PARTS
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2012-10-03
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a fire-proof wheel and a production technology of the fire-proof wheel. The fire-proof wheel comprises a wheel main body and a bearing which are made of metal materials. The wheel main body comprises a retaining ring and a wheel core which is provided with a through hole. One end of the wheel core is provided with a folded side, and the other end of the wheel core is provided with a first limiting step. The retaining ring is fixedly sleeved on the first limiting step. One end of the inner wall of the through hole of the wheel core is provided with a second limiting step, and the other end of the inner wall of the through hole of the wheel core is provided with a certain quantity of riveting points which are distributed in an annular shape. The bearing is fixed between the riveting points and the second limiting step. A Teflon ring is sleeved on the outer surface of the wheel core, and the Teflon ring is located between the retaining ring and the folded side. The fire-proof wheel provided by the invention comprises the wheel core and a baffle which are made of metal materials, so that the fire-proof function of the surface of the wheel is good; compared with the design of the polyurethane ring in the prior art, the Teflon ring is not influenced by high temperature, the use stability is high, and the work performance is good, so that the fire-proof wheel is quite suitable for fire elevator systems.
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Description

technical field

[0001] The invention relates to a fireproof elevator component, in particular to a fireproof roller and its production process. Background technique

[0002] In order to ensure the safety of people's lives and properties when a fire occurs, some high-rise buildings are equipped with fire elevators for people to escape when a fire occurs. Compared with ordinary elevators, due to the particularity of its use environment, fire elevators must have fireproofing functions.

[0003] As a conventional part of the elevator system, the roller is a key part of the door opening and closing of the landing door. Naturally, it will also be used in the fire elevator system. At present, the elevator rollers on the market are mainly divided into two types: one is injection-molded nylon rollers, which are widely used in the elevator field due to their hard texture, low production cost and high production efficiency. The friction coefficient of the material is large, it is eas...

Examples

Embodiment 1

[0016] Such as figure 1 , figure 2 with image 3 As shown, the fireproof roller provided in this embodiment includes a metal roller body and a bearing 4, and is characterized in that the roller body includes a retaining ring 2 and a wheel core 1 with a through hole 13, and one end of the wheel core 1 has a There is a folded edge 12, and the other end is provided with a first limit step 11. The retaining ring 2 is riveted on the first limit step 11. The riveting method can be preferably screw riveting. The riveted structure can lift the retaining ring 2 and the wheel core. 1, a second limiting step 132 is provided at one end of the inner wall of the through hole 13 of the wheel core 1, and six riveting points 131 are arranged in a ring at the other end, and the bearing 4 is fixedly placed between the riveting points 131 and the second limiting step. Between the steps 132, the outer surface of the wheel core 1 is sleeved with a Teflon ring 4, the Teflon ring 3 is located betw...