SU1074723A1 - Apparatus for moulding elongated articles of concrete mixes - Google Patents

Abstract

1. DEVICE FOR FORMING LONG-DIMENSIONAL PRODUCTS FROM CONCRETE MIXTURES, containing transverse beams mounted on the base with the help of elastic supports, on which a pallet with folding sides and an air support /// ///////////// ///////////////// $ nJ oscillators, characterized in that, in order to improve the quality and reduce the noise level, each transverse beam is made of elastic and arc-shaped with a deflection boom in 4 -15 times shorter than its length with supporting box-shaped brackets at the ends, elastic supports are made with non-linear stiffness, and each exciter l oscillations attached to the corresponding transverse beam. 2. The device according to claim 1, characterized in that it is provided with horizontal elastic elements fixed on the supporting box-shaped brackets. 3. The device according to claims. 1 and 2, characterized in that the oscillation pathogen is fixed in the central part of the elastic beam. 4. Device on PP. 1 and 2, characterized in that the vibration exciter is fixed on one of the support box-shaped brackets of each elastic beam.

Description

This invention relates to the manufacture of precast concrete and reinforced concrete products. A device for forming concrete products is known, which contains a vibrobalk suspended from a trolley with a drive of its vertical movements fixed on it 1. However, this device does not provide effective compaction due to the local effect of combs of elastic rods on the compacted concrete mix. Also known is a formwork for the manufacture of reinforced concrete structures, containing a pallet with hinged sides, mounted on crossbars supported by ends using elastic supports on the base, and vibration exciters 2. However, the formwork does not retain a stable operation mode of the entire structure. because the elastic gaskets do not provide equal structural design depending on the formwork load, which leads to a change in the mode of vibrocompaction of the concrete mix. The purpose of the present image is to increase the quality and decrease the level of the schum. This goal is achieved by the fact that, in a device for forming long concrete products, containing transverse beams mounted on the base with elastic supports, on which the pallet with folding sides is supported, and oscillation pathogens, each transverse beam is made elastic and arc-shaped with a deflection boom 4-15 times smaller than its length with supporting box-shaped brackets at the ends, elastic supports are made with non-linear stiffness, and each exciter is fixed on the corresponding transverse beam. ..j In addition, the device is equipped with horizontal elastic elements fixed to the supporting box-shaped brackets. The exciter is fixed in the center of the elastic beam. The exciter is attached to one of the support box brackets of each elastic beam. FIG. 1 shows the device, a general view; in fig. 2 is a section A-A in FIG. one; in fig. 3 is a diagram of a support with horizontal elastic elements; in fig. 4 is a section A-A in FIG. 1, with a vibration exciter mounted on the support box brackets of the elastic beam. A device for molding long concrete products contains mounted on the base 1 by means of elastic supports 2 transverse beams 3, on which the pallet 4 is supported with flaps 5, and the exciters 6 oscillations. Each transverse beam 3 is made elastic and arcuate with a deflection, 4-15 times less than its length, i.e. H L (4-15), with supporting box-shaped brackets 7 at the ends. The elastic supports 2 are made with non-linear stiffness, which is ensured, for example, by installing several springs of different heights 8-10. Each oscillation pathogen 6 is fixed on the corresponding transverse elastic beam 3, and the oscillation pathogen 6 can be fixed both in the central part of the elastic beam 3 (Fig. 2) and on one of the support box-shaped brackets 7 of the elastic beam (Fig. 4). In addition, on the support brackets 7 fixed horizontal elements 11. The device works as follows. When the exciters 6 are turned on, the pallet 4 together with the closed sides 5 oscillates, resting on the longest springs 8 of the elastic supports 2. As the device is filled with concrete, its mass increases and the system begins to go out of the resonant mode of oscillation, however, as the weight increases and the supporting box-shaped brackets 7 come into contact with the springs 9 of the elastic supports next in height, the rigidity of the supports increases and the resonant mode of oscillation is restored. The proposed device for the molding of long concrete products stabilizes the mode of operation, thereby increasing the quality of the manufactured products and reduces the noise level.

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Claims (4)

1. DEVICE FOR FORMING LONG-DIMENSIONAL PRODUCTS FROM CONCRETE MIXTURES, comprising transverse beams mounted on the base with the help of elastic supports, on which a pallet with hinged sides is supported, and vibration exciters, characterized in that, in order to improve quality and reduce noise level, each the transverse beam is made elastic and arcuate with a deflection arrow 4-15 times smaller than its length with supporting box brackets at the ends, elastic supports are made with nonlinear rigidity, and each exciter is fixed to the corresponding flailing crossbeam. 2. The device according to π. 1, characterized in that it is provided with horizontal elastic elements fixed to the support box-shaped brackets' 3. The device according to paragraphs. 1 and 2, characterized in that the pathogen is fixed in the Central part of the elastic beam. 4. The device according to paragraphs. 1 and 2, characterized in that the pathogen is mounted on one of the supporting box brackets of each elastic beam. Figure 1 /