Design and applications of polyurethane composite isolator in power equipment

doi:10.19491/j.issn.1001-9278.2024.05.013

Abstract

Abstract:

A composite isolator was proposed for the used in power equipment and then formed through over⁃injection molding using polyurethane and thermoplastic polyurethane elastomers as raw materials. Taking the isolation of a compressor as an example， the composite isolator was designed， and the dynamic stress analysis of the designed composite isolator was simulated by using the simulation software of the company to provide a guide for the design. Finally， the results from the durability⁃comparative experiment of the composite isolator and rubber isolator preliminarily indicated that the composite isolator exhibited better durable performance and lighter weight than the rubber isolator.

Key words: polyurethane, composite isolator, durability

CLC Number:

TQ323.8

FENG Jingming. Design and applications of polyurethane composite isolator in power equipment[J]. China Plastics, 2024, 38(5): 73-77.

Figures/Tables 6

Fig.1. Transmission curves of the single⁃freedom vibration isolation system

Fig.2. Process diagram of the composite isolator

Fig.3. Model of the polyurethane composite isolator in single degree of freedom system

Fig.4. Comparison of dynamic stiffness test results of the three types of isolators

Fig.5. Simulation diagram of the composite isolators

Fig.6. Design diagram of the composite isolator

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