SU814736A1 - Plant for moulding tubular articles,e.g.of concrete mixed - Google Patents

Description

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The invention relates to the manufacture of products from precast concrete and reinforced concrete.

A known device for forming tubular articles, mainly of concrete mixtures, contains a pivoting frame, installed by means of supports on a fixed frame, a causative agent of horizontal torsional vibrations and: stops and horizontal displacements in contact with each other by means of elastic elements, mounted on a pivoting and stationary frame1x .

A disadvantage of the known device is the complexity of the design of the mechanism for the excitation of torsional vibrations, and its placement directly on the installation serves as a source of noise.

The purpose of the invention is to reduce the noise level and simplify the design.

This goal is achieved by the fact that the installation for forming tubular products from a concrete mix, containing a pivoting frame / mounted by means of supports on a fixed frame, a causative agent of horizontal torsional vibrations and equipped

in contact with each other, stops and limiters of horizontal displacements, equipped with a causative agent of horizontal torsional vibrations,

made in the form of vertical

shaft with radial blades mounted on its surface, rigidly fixed with a swing frame, and the fixed frame is made in the form

bodies with hermetic cavities, each of which contains radial blades. Forming compartments connected by means of waveguides with a source of infrasonic vibrations.

FIG. 1 schematically shows a general view of the installation, a longitudinal section; in fig. 2 - the same cross section.

The apparatus for forming tubular products consists of a fixed frame 1, on which a torsional vibration pathogen is mounted in the sub-support supports 2, made in the form of a vertical shaft 3 rigidly fixed on the rotary frame 4. On the surface of the vertical shaft 3 are mounted the radial blades 5, which are located inside the cylindrical

housing 6, equipped with walls 7, Poorotnaya frame 4 is installed on supports 8. Walls 7 of housing 6 form airtight cavities, which are divided into paired compartments 9 and 10 by radial blades 5. Each of the compartments is connected to a source of infrasonic oscillations (on the drawing is not shown). On pivoting frame 4, form 12 is fixed, filled with concrete. For a more effective compacting of the concrete mix, the pivoting frame 4 and the casing 6 are provided with interlocking supports 13 and resilient limiters 14 interconnecting with each other. The installation works as follows. On the rotary frame 4 set the form 12 with a concrete mix and. include the causative agent of infrasonic vibrations. The air oscillations formed by the infrasonic generator along the waveguides 11 with the speed of sound flow into the paired compartments 9 and 10 of the air cavities of the housing 6. At the same time, if the half-wave of the medium is compressed, then the half-wave of the medium and vice versa. The antiphase oscillations of pressure arising in the compartments 9 and 10 of the air cavities inform the vertical shaft 3, and through it the frame 4 and the form 12 rotary oscillatory motion around its axis. At the same time, at the moment of contact of the lugs 13 with the elastic limiters 14, the frame 4 and, accordingly, the form 12 receive shock pulses, intensifying the process of forming the product. The invention The apparatus for forming tubular products, mainly of concrete mixes, contains a swinging frame, mounted with a support on a fixed frame, a causative agent of horizontal torsional vibrations and, in contact with each other, by means of elastic elements, stops and horizontal displacements mounted on a turning and stationary, respectively frame, characterized in that, in order to reduce the noise level and simplify the design, the torsional vibration pathogen is made in the form TCR mounted on the rotary frame with a vertical shaft mounted on its surface with radial blades and fixed frame in the form of a sealed housing with a cavity divided by the waveguides associated with the source of infrasonic waves compartments, each of which is located a radial blade.

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Claims (1)

Claim Installation for molding tubular products, mainly from concrete mixtures, containing a rotary frame mounted using supports on a fixed frame, a horizontal torsional vibration pathogen contacting each other by means of elastic elements, and horizontal movement limiters mounted respectively on a rotary and fixed frame, about characterized in that, in order to reduce the noise level and simplify the design, the torsional vibration exciter is made in the form of a rigidly fixed frame-latitude vertical shaft mounted with radial blades on its surface, and the fixed frame in the form of a sealed housing with a cavity divided by the waveguides connected to a source of infrasonic waves compartments, each of which is located a radial blade. Figure 1 Fi g. 2