| 摘要 |
FIELD: textile engineering. ^ SUBSTANCE: housing has guard formed as body and mounted on spindle bar of textile machine, at the level of spindles, along row of spindles and provided with vertical detachable cover and vibration-absorbing and sound-absorbing layers, both fixed to guard inner surface. Guard body consists of upper and side plates rigidly attached to spindle bar, and detachable cover consisting of lower horizontal plate and vertical beveled plate. Thickness of vibration-absorbing layer fixed to plates exceeds thickness of body and cover plates by 2-4 times. Vibration-absorbing layer is elastic vibration-absorbing sheet material having intrinsic loss coefficient of at least 0.2, or composite material, or plasticized rubber. Sound-absorbing material of guard has members made from basalt-based mineral wool, or mineral wool, or basalt-based wool, or glass wool lined with glass felt, or foamed polymer such as polyethylene or polypropylene. Sound-absorbing member is lined with acoustically transparent material such as glass cloth or polymer applied onto its entire surface. Sound-absorbing material for guard may be made from soft foamed porous sound-absorbing material such as polyurethane foam, or polyethylene foam, or rigid porous sound-absorbing material such as foam aluminum. Sound-absorbing material for guard may be made in the form of crumbs of solid vibration-damping materials such as elastomer, polyurethane or plasticized rubber, said crumbs being placed within enclosure of sound-conducting material. Crumb fraction has sizes ranging between 0.3 mm and 2.5 mm. ^ EFFECT: increased efficiency in reducing of noise created by rotating spindles. ^ 5 cl, 1 dwg |
