BARRIER FOR SPINDLES OF A TEXTILE MACHINE Russian patent published in 2018 - IPC D01H1/16 

FIELD: textile.

SUBSTANCE: invention relates to textile industry and concerns a noise-attenuating barrier for textile machines. This is achieved by the fact that in the fencing of the spindles of a textile machine containing a metal casing installed by means of brackets on a spindle bar of the machine, on the inner surface of which is fastened a vibration-absorbing layer made in the form of elastic sheet vibration-absorbing material with internal loss coefficient not lower than 0.2, or a composite material, or Agate, Antivibrit, Schwim, with the 2…4 times greater thickness of the vibration-absorbing layer placed on the slats than the thickness of the plates, spindles turn from a belt drive and are secured on the spindle bar of the machine by means of elastic damping gaskets from elastomer, ratio of their total stiffness to bending stiffness of the spindle bar is within optimal range of 0.01…0.1, and the metal casing is located in the zone of the spindles along their row and is box-shaped and covers both sets of spindle machines at once, and the plates are placed on the casing on its inner side and on both sides, upper and lower, are covered with vibration-absorbing layers with sound-absorbing layers placed on them, while process holes Z₁ and Z₂ are provided on the upper and lower planes of the casing, ratio of total area of F₁ of the process holes to the total area of casing F is within optimal range of values F₁/F = 0.1…0.4, and sound-absorbing element of the spindle barrier contains a smooth and perforated surface, between which a layer of sound-absorbing material of complex shape is located, which is an alternation of solid areas and hollow sections, the hollow sections being formed by prismatic surfaces having cross-section, parallel to the plane of the drawing, the form of a parallelogram whose internal surfaces have a toothed structure, the tips of the teeth turned inward the prismatic surfaces, and the edges of the prismatic surfaces are fixed respectively on the smooth and perforated walls, and cavities of hollow sections formed by prismatic surfaces are filled with a sound absorber, and between a smooth surface and continuous sections of a layer of sound-absorbing material of a complex shape, as well as between the perforated surface and solid sections, there are resonant plates with resonant inserts performing the functions of the neck of Helmholtz resonators.

EFFECT: technical result is increase in noise reduction efficiency.

1 cl, 3 dwg