RU2311502C2 - Housing for spindles of textile machine - Google Patents

Abstract

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

Description

The invention relates to the textile industry and relates to noise attenuation spindles of textile machines.

Known fencing spindles of a textile machine, containing mounted on the spindle bar of the machine at the level of its spindles along their row of fencing with vibration-absorbing layers fixed to its inner surface (SU 1388484 A1, 04/15/1988).

A disadvantage of the known device is the relatively low noise reduction efficiency.

The closest analogue of the claimed invention is a casing of spindles of a textile machine containing a spindle mounted on a machine spindle at the level of its spindles along their row and made in the form of a casing with a vertically arranged removable cover and with a vibration-absorbing layer and a sound-absorbing layer fixed on its inner surface (KORITISSKIY I . I. et al., Vibration and noise in textile and light industry, Moscow, Light Industry, 1974, p.150-151, fig. 92, p. 162).

In this casing, the aforementioned drawback is not eliminated.

The objective of the invention is to provide a casing for the spindles of a textile machine, providing a technical result, consisting in increasing the efficiency of reducing the noise created on the machine by rotating spindles.

This technical result in the casing of the spindles of a textile machine, comprising a spindle mounted on a spindle bar of a machine at the level of its spindles along their row and made in the form of a body with a vertically arranged removable cover and with a vibration-absorbing layer and a sound-absorbing layer fixed to its inner surface, is achieved by the case consists of an upper and side plate rigidly attached to a spindle bar, and a removable cover consists of a lower horizontal plate and a vertical plate with a slope, while thickness placed on plates of vibration absorption layer is 2-4 times greater than the thickness of plates and the housing cover.

As the material of the vibration-absorbing layer, an elastic sheet of vibration-absorbing material with an internal loss coefficient of at least 0.2, or a composite material, or plastic compound is used.

As sound-absorbing material of the fence, elements of mineral wool based on basalt or mineral wool, or basalt wool, or glass wool with glass fiber lining, or foamed polymer, for example polyethylene or polypropylene, are used, and the sound-absorbing element is lined with acoustically transparent material, for example fiberglass, over its entire surface or polymer.

The sound-absorbing material of the enclosure is made of soft foamed porous sound-absorbing material, for example, foamed polyurethane or polyethylene foam, or of rigid porous sound-absorbing material, for example, foam aluminum.

The sound-absorbing material of the fence can be made in the form of crumbs of solid vibration-damping materials, for example, elastomer, polyurethane, or plastic compound, placed in a shell of sound-transparent material, the size of the fractions of the crumb being in the optimal range of values: 0.3-2.5 mm

The drawing shows a casing of spindles of a textile machine.

The casing for the spindles 1 of the textile machine comprises a guard 7 mounted on the spindle bar of the machine through the bracket 2 at the level of its spindles along their row with vibration-absorbing layers 6 fixed on its inner surface. The coil 5 is rotated through the tension roller 3 by means of the belt 4. The guard is made in the case, consisting of the upper and side plates, rigidly fixed to the spindle beam, and a vertically located removable cover, consisting of a lower horizontal plate and a vertical plate with slope, and the thickness of the vibration-absorbing layer placed on the plates (not shown in the drawing) is 2-4 times greater than the thickness of the body and cover plates, and the elastic vibration-absorbing sheet material with an internal loss coefficient of at least 0.2, or composite, is used as the material of the vibration-absorbing layer material, or plastic compound like "Agate", "Anti-Vibrate", "Shvim".

As sound-absorbing material 6 of the fence 7, elements of rockwool basalt type mineral wool or URSA type mineral wool or P-75 type basalt wool or glass wool lined with glass wool or foamed polymer, such as polyethylene or polypropylene are used moreover, the sound-absorbing element over its entire surface is lined with an acoustically transparent material, for example, fiberglass type EZ-100 or polymer type "Poviden."

Sound-absorbing material 6 of the fence 7 is made on the basis of aluminum-containing alloys, followed by filling them with titanium hydride or air with a density in the range of 0.5 ... 0.9 kg / m ³ with the following strength properties: compressive strength in the range of 5 ... 10 MPa, bending strength in the range of 10 ... 20 MPa, either from soft foamed porous noise-absorbing material, for example, foamed polyurethane foam or polyethylene foam, or from rigid porous noise-absorbing material, for example foam aluminum.

The sound-absorbing material 6 of the fence 7 is made in the form of crumbs of solid vibration-damping materials, such as elastomer, polyurethane, or plastic compound such as Agate, Anti-Vibrate, Shvim, which is placed in a shell of soundproof material, and the size of the fractions of the crumb lies in the optimal range of values : 0.3 ... 2.5 mm (not shown in the drawing).

The casing works as follows.

During operation of the machine, the sound pressure energy generated by its spindles is absorbed by the sound-absorbing layer 6 of the fence, and the vibration-absorbing layer dampens the vibrations of the thin metal casing, which is the source of acoustic vibration. The damping effect increases with the removal of the vibration-absorbing layer from the neutral axis of the spindle bar during bending due to an increase in deformation. This effect is just realized in this design of fencing with slats that provide spatial damping, the loss coefficient of which is 0.2 compared to 0.05 with conventional damping in the frequency range from 200 to 3000 Hz. The removal of the vibration-absorbing viscoelastic layer from the neutral axis of the spindle beam during bending causes an increase in the deformation of the casing and planks, which leads to increased friction between the vibration-absorbing layer and the casing and planks and helps to dissipate the energy of vibration.

Claims (5)

1. The casing of the spindles of a textile machine, comprising a spindle mounted on a machine spindle at the level of its spindles along their row and a guard made in the form of a body with a vertically disposable removable cover and a vibration-absorbing layer and a sound-absorbing layer fixed to its inner surface, characterized in that the body consists of the upper and side plates rigidly attached to the spindle bar, and the removable cover consists of a lower horizontal plate and a vertical plate with a slope, while the thickness of the plate Astin of the vibration-absorbing layer is 2 ÷ 4 times the thickness of the plates of the body and cover. 2. The casing according to claim 1, characterized in that as the material of the vibration-absorbing layer, an elastic sheet of vibration-absorbing material with an internal loss coefficient of at least 0.2, or a composite material, or plastic compound is used. 3. The casing according to claim 1, characterized in that the elements of mineral wool based on basalt or mineral wool, or basalt wool, or glass wool lined with glass wool, or foamed polymer, for example polyethylene or polypropylene, are used as sound-absorbing material of the enclosure. the element is lined with an acoustically transparent material, for example fiberglass or polymer, over its entire surface. 4. The casing according to claim 1, characterized in that the sound-absorbing material of the enclosure is made of soft foamed porous noise-absorbing material, for example, foamed polyurethane foam or polyethylene foam, or of rigid porous noise-absorbing material, for example foam aluminum. 5. The casing according to claim 1, characterized in that the sound-absorbing material of the fence is made in the form of crumbs of solid vibration-damping materials, for example elastomer, polyurethane or plastic compound, placed in a shell of soundproof material, and the size of the fractions of the crumb lies in the optimal range of values of 0.3 ÷ 2.5 mm.