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Anti-aging escalator rollers

An escalator and anti-aging technology, which is applied to escalators, rotating parts that resist centrifugal force, bearings, etc., can solve the problems of easy hydrolysis reaction and poor damp heat aging resistance, and achieve excellent roller performance and strong damp heat aging resistance Effect

Active Publication Date: 2021-05-14
ZHEJIANG WANLI AUTOPART PROD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Polyester TPU has better mechanical properties than polyether TPU, so polyester TPU is often used as the material of the wheel rim to adapt to the high-load working environment of the subway system. However, the polarity of the ester group in polyester TPU is strong. In a hot and humid environment, hydrolysis reactions are prone to occur, and the aging resistance to humidity and heat is poor. This shortcoming is more obvious in southern cities

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] see figure 1 , the same as the prior art, the anti-aging escalator roller of the present embodiment is composed of a hub 1, and a bearing 2 and a rim 3 respectively arranged on the inner and outer rings of the hub 1; wherein, the hub 1 adopts Made of aluminum alloy.

[0033] Different from the prior art, in this embodiment, the rim 3 is injection-molded with a thermoplastic elastomer newly developed for subway escalators.

[0034] The roller manufacturing process is as follows:

[0035] (1) Preparation of thermoplastic elastomer

[0036] The material formula of the thermoplastic elastomer of the present embodiment is made up of main material and auxiliary material, and by weight, main material is: polyether type TPU 100 parts, ABS resin 35 parts, macromolecule coupling agent 10 parts; Auxiliary material is: charcoal 1 part of black, 0.05 part of antioxidant, 0.03 part of light stabilizer.

[0037] Among them: polyether type TPU is Bayer (Desmopan) 955U; ABS resin is...

Embodiment 2

[0045] The difference from Example 1 is that in this example, the material formula of the thermoplastic elastomer is calculated in parts by weight. The main ingredients are: 100 parts of polyether TPU, 20 parts of ABS resin, and 7 parts of macromolecular coupling agent; the auxiliary materials are : 3 parts of carbon black, 0.1 part of antioxidant, 0.02 part of light stabilizer.

Embodiment 3

[0047] The difference from Example 1 is that in this example, the material formula of the thermoplastic elastomer is calculated in parts by weight. The main ingredients are: 100 parts of polyether TPU, 30 parts of ABS resin, 8 parts of macromolecular coupling agent; the auxiliary materials are : 2 parts of carbon black, 0.07 part of antioxidant, 0.03 part of light stabilizer.

[0048] The aging-resistant escalator rollers prepared in Examples 1-3 were tested according to the China Elevator Association standard T / CEA 301-2019 "Technical Specifications for Escalators for Subway", and the results showed that the rollers of the present invention meet the requirements of T / CEA 301-2019. 2019 requirements, and excellent performance.

[0049] Table 2: Test results of Examples 1-3

[0050]

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PUM

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Abstract

The aging-resistant escalator roller of the present invention comprises a hub (1), and a bearing (2) and a wheel rim (3) that are respectively arranged on the inner and outer rings of the hub (1); the wheel rim (3) ) is injection molded from a thermoplastic elastomer; the material formula of the thermoplastic elastomer is composed of main materials and auxiliary materials. 7-10 parts of agent; auxiliary materials include: 1-3 parts of carbon black, 0.05-1 part of antioxidant, 0.02-0.05 part of light stabilizer. The roller has strong resistance to moisture and heat hydrolysis and aging, and can better adapt to the working environment of the subway system in southern cities. At the same time, it meets the requirements of T / CEA301‑2019.

Description

technical field [0001] The invention relates to an escalator step roller, in particular to an anti-aging escalator roller. Background technique [0002] Urban rail transit has become the backbone of urban traffic in my country, and subway is the main component of urban traffic. Escalators are widely used in the subway system because of their efficient conveying capacity, and are an important subsystem of the subway. The reliability, availability, maintainability, and safety (RAMS) of a subway system depends on the RAMS of each subsystem, including escalators. [0003] The subway has the characteristics of large passenger flow and long peak passenger flow time. The escalator used in the subway needs to meet the technical requirements of these characteristics to ensure the required RAMS level. To this end, the China Elevator Association has specially formulated the industry standard T / CEA 301-2019 "Technical Specifications for Escalators for Subway", which was released on Ju...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B66B23/00F16C13/00C08L75/08C08L55/02C08L51/06C08K13/02C08K3/04C08K5/053
CPCB66B23/00C08L75/08C08L2201/08C08L2205/03F16C13/006F16C2208/10F16C2208/22F16C2208/36C08L55/02C08L51/06C08K13/02C08K3/04C08K5/053
Inventor 戴建兴
Owner ZHEJIANG WANLI AUTOPART PROD
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