SU1664573A1 - Device for placing and compaction of concrete mixes - Google Patents

Abstract

The invention relates to the construction and can be used in the concreting of monolithic and reinforced concrete pavements and the formation of prefabricated slab structures. The purpose of the invention is to increase the productivity and quality of products. This is achieved by the fact that in the device the vibrating plate 9 is made with a high-frequency vibrator 8 installed in its front part, having a length equal to 1.5-2.0 width of the opening, and a low-frequency vibrotor 10 located in its rear part connected to the front part by means of an elastic gasket 11 with a length of 3–4.0 width of the opening, and the elastic elements 14 are pivotally connected to the frame along the axes passing through the centers of mass of the front and rear parts of the vibrating plates, the working surface of which is made stepped in the area from the elastic gasket to month The placement of the low-frequency vibrator. 1 hp ff, 6 ill.

Description

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The invention relates to the construction and can be used in the concreting of monolithic concrete and reinforced concrete pavements and the formation of prefabricated slab structures.

The aim of the invention is to increase the productivity and quality of the products.

Figure 1 shows the device, a general view; FIG. 2 is a section A-A in FIG. one; on fig.Z - section bb in figure 2; figure 4 - node

1 to FIG. 3; in fig. 5 shows a section B-B in FIG. 4, FIG. 6 is a section of YYD in FIG. 4.

The device includes a frame 1 installed on the base by means of rollers with a feed bin fixed on it

2 with a shutter 3 and vibration exciters 4 on the outer surfaces of the side walls connected to a vibration sealing device in the form of a vibrating plate with a transversely located opening 5 bounded by vertical walls 6 consisting of a front 7 with a high frequency vibrator

8 and equal to 1.5-2.0 width of the opening and rear

9c with a low-frequency vibrator 10 and equal to 3.0-4.0 width of the opening of the parts connected by an elastic gasket 11. The rear part 12 of the vibrating plate 9 in the section from the elastic gasket to the installation location of the low-frequency vibrator 10 is made stepped with lateral restrictive plates 13. The vibrating plate is attached to

frame by means of elastic elements 14, connected to the frame along axes passing through the centers of mass of the front 7 and rear 9 parts of the vibrating plate. Consumable hopper 2 is connected with having a transversely positioned opening 5 of the vibrating plate elastic cage 15.

The device works as follows.

The device is installed above the coarse aggregate laid in the formwork at the beginning of the section of the concreted structure so that the transverse opening 5 is above the rubble in close proximity to the edge of the concreted structure.

After checking the operability of all units, the feed bin 2 is filled with a solution. Then, the shutter 3 is opened and when the mortar enters the rubble surface, a high-frequency vibrator 8 is turned on. When the solution appears in front of the front edge of the vibrating plate 7, the device moves forward along the concreted structure while the low-frequency vibrator 10 is turned on.

plate compactors 7 were permanently preserved by the roller from the solution.

Under the action of high-frequency vibration occurs thixotropic dilution of the solution. At the same time, high-frequency vibration has practically no significant effect on rubble and does not result in its compaction. As a result, the penetration capacity of the solution increases, it fills the intergranular space with crushed stone, moves with a uniform front, pushes air out of the intergranular space.

In the process of moving the device 5 over each section of the concreted structure, the rear part of the vibrating plate 9 is separated from the front part 7 by an elastic gasket 11. As a result of low-frequency vibration, the solution falling under the stepped section 12 of the rear part of the vibrating plate 9 is subjected to low-frequency impulse effects , contributing to a better filling of intergranular gaps 5 gravel. The low-frequency vibration effect transmitted by the back of the vibrating plate 9 to the formed concrete mix provides additional compaction, making the concrete of high strength, density and uniformity.

After the device reaches the boundary of the structure, the shutter 3 is closed and the high-frequency vibrator 8 is turned off, and when passing through the rear part of the vibrating plate 9, the low-frequency vibrator 10 is turned off. Then the device is transferred to a new section and the process is repeated. In the process of concreting, the mortar is fed into the supply bin 0, maintaining it at a level that ensures the necessary speed of concreting.

Claims (2)

Claim 1. Device for laying and compacting 5 concrete mixes, comprising a frame mounted on the base by means of rollers and a feed hopper fixed to it, connected by means of an elastic cage to a vibration sealing plate in the form of a vibrating plate connected to the frame 0 Elastic elements, characterized in that, in order to increase the productivity and quality of the products, 5 the vibrating plate is made with a high-frequency vibrator installed in its front part, having a line equal to 1.5-2.0 width of the opening, and a low-frequency vibrator located in its rear part, connected to the front part by means of an elastic pad and having a length equal to 3.0-4.0 of the width of the opening, and the elastic elements are pivotally connected with the frame along the axes passing through the centers of mass of the front and rear parts of the vibrating plate, the working surface of which is in the area from the elastic gasket to the location of the low plate g // i 7 // /// // J /// Iw / /////// // L /// / b /// b. 14 × V; fJ / 39/0 Fa v.1 1 g ////////////////////////////.///////////////////// //////////// / j / /// The stock vibrator is stepped with lateral limiting plates. 2. Device pop.1, characterized in that the opening is limited by vertical walls, spaced from the longitudinal edges of the plate by the distance of the opening width. lmfr /. Sha and / to z  G & ig.2 four H.: .. :: # S . $ Well 1 n1 "1iЈn mvmam OU: -L ZJ ъ & КЫ -C -at T 5/5 77,  J Figm . W5.5 Y // S / OU: -L ъ & Y- $ S; I SKELZH t ///////.  .. About Ј # YYSLG 1 . . , A / a