SU1369891A1 - Vibroimpact device for compacting concrete mixes in mould - Google Patents

Abstract

The invention relates to the manufacture of precast concrete and reinforced concrete products and reduces noise and provides adjustment to the optimum mode of operation of the molding equipment. This goal is achieved by the fact that in a vibratory shock device for compacting concrete mixtures in the form of support 6 of intermediate frame 4 are made resilient, and buffer elements are in the form of conical rubber-metal holders 7. In each rubber-metal holder 7, the axes of the hinged links 10, made in the form of truncated cones 8 with flats parallel to the hinge links m 10. Each top axis 13 links 10 is located in one of the adjustment holes 14 formed in the working body 1, spring-loaded relative to the intermediate frame and of the connections with rubber clip. 1 hp ff, 4 ill. 5 cl

Description

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

A: The purpose of the invention is to reduce the noise level and tune to the optimum operating mode.

FIG. 1 shows schematically the proposed vibro-impact device for compacting concrete mixtures in the form, general view; in fig. 2 - section A | -A in FIG. one; in fig. 3 - section -B in FIG. one; in fig. 4 is a sectional view of the BJ-B in FIG. 3

i Vibro-shock device for compacting concrete mixes in a form consists of a working body 1 with an exciter: 2 oscillations connected with elastic elements 3 with intermediate p: 4, which is installed on the basis of | elastic supports 6. Between the working body 1 and the intermediate frame 4 along the perimeter of the latter are installed radially buffer elements in the form of rubber-metal holders 7

covering the lower axes, made in the form of rotary truncated cones 8 with apron 9, inclined hinged Yawns 10. Rubber-metal oi-7 and truncated cones 8 can be mounted with the help of brackets 11 and 12 and intermediate frame 4 and working body 1, respectively.

The working body 1 and the intermediate frame 4 are interconnected by means of) 1 and inclined hinge links 10, 1 and whose ends are rigidly fixed on truncated cones 8, and the upper axis 13 is placed in one of the crawler holes 14, formed in the working body 1. In order to ensure the asymmetry of the vibration cycle, the truncated cones 8 are connected with the hinged links 10 in the position in which the latter and the flats 9 are parallel 11Y. At the same time, the gap between the truncated cone 8 and the rubber-metal case 7 on the side of the working body 1 is smaller than on the side of the intermediate

frame. Since the movement of any point of the working body 1 with torsional oscillations depends on its position relative to the axis of oscillation, the working surfaces of the rubber-metal oibi-ib 7 are conical. The size of the taper is determined by the diameter of the rubber-metal holders 7 and their position relative to the vertical axis.

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The vibratory impact device for compacting the concrete mix in the mold works as follows.

After installation on the working body 1 of the form and filling it with a concrete mixture, exciters include 2 directions of oscillations, which excite vertical antiphase oscillations of the working body 1 on the elastic elements 3 and the intermediate frame 4 on the elastic supports 6. Under the action of reactions occurring at the hinge links x 10, vertical vibrations are converted to helical (torsional + vertical). In this case, the oscillating masses with opposite movement are accompanied by the collision of truncated cones 8 with rubber-metal holders 7, which ensures (the seal of the concrete mixture is compacted. As a result of the rubber-metal holders 7 turning relative to the brackets 11, they turn during working around its axis, which increases their work surface and increases service life.

When forming a product of another size, the site is retooled by changing the intensity of torsional vibrations, for which

shifting the axis 13 of the hinges of the links 10 into the corresponding apertures 14 changes the angle about the inclination of the hinge links 10. Since the oscillation axis of the working member 1 and the intermediate frame 4 is always perpendicular to the links 10, and the truncated cones 8 are rigidly connected to the latter, readjustment buffer elements occur automatically. The truncated cones 8 rotate at the same angle as the links 11 and the flats 9 and, for any angle 0, are perpendicular to the displacement vector of oscillating masses, i.e. in a position in which the impact of the truncated cones 8 and the rubber-metal holders 7 occurs only during the course of the working body 1 down.

Claims (2)

1. Vibro-impact device for compacting concrete mixes in a form, containing a working body in contact with radially located buffer elements with associated inclined hinge links of an intermediate frame installed by means of supports on the base, and the causative agent of vertical-directed oscillations, characterized in that , in order to reduce the noise level and tune to the optimum mode of operation, the intermediate frame supports are made of elastic, the buffer elements are in the form of rubber-metal clips, the lower axes are pivotal hinged links - in the form of the I rotary truncated cones covered with the last ones, with flats, paral the main longitudinal axis of the links, and each upper axis of which is placed in one of the adjusting holes formed in the working organ, spring-loaded relative to the intermediate frame and connected to the rubber-metal cage. 2. The device according to claim 1, wherein the rubber mounts are rotatable relative to their longitudinal axes. 2 eleven 12 136989 5 5