SU1729754A1 - Apparatus for manufacturing articles with voids from concrete mixtures - Google Patents

Abstract

The invention relates to the production of concrete and reinforced concrete products with voids and allows to increase the productivity and quality of products. This is achieved in that the installation is equipped with an injection device with a distribution manifold and a lid mounted on the mold. The outer ends of the part of the sections of the void-forming are connected to the distribution manifold, and their inner ends are made with dispensing windows. 7 il.

Description

The invention relates to the manufacture of precast concrete products and can be used to make building products such as hollow-core slabs.

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

Figure 1 shows the installation, General view; in FIG. 2, the same with the arrangement of the cores inside the mold; fig.Z - node I in figure 2; 4 and 5 show sections A-A and BB in Fig. 2, respectively; figure 6 - installation, top view; Fig. 7 - the same, with hollow cores introduced into the mold.

The installation comprises a trolley 1 with a drive 2, on which a replaceable form 3 with a lid 4 is installed, composite hollow cores, some of which 5-11 are connected by means of fasteners, elements 12-18 and common cross member 19 to the drive carriage 20. Another part of the tubular sections 21 The -24 composite void formers are connected to the external ends by a collector 25 with an injection device, such as a concrete pump (not shown), and the internal ends of these sections are provided with dispensing ports 26 for exit of the concrete mix. The ends of the tubular sections are provided with locks 27 and 28 for connecting them. The cart 1 has stops 29 for fixing the mold 3 against longitudinal movement, locks 30 for fastening the cover 4 and mold 3, as well as rollers 31 and 32 for holding the free ends of the tubular sections 5-11 and 21-24 of the composite void formers. The drive 2 of the trolley 1 and the driven carriage 20 of the tubular sections 5-11 with the help of gear wheels 33 and 34 interact with a common rail 35 fixed on the base of the installation.

The operation of the installation is carried out as follows. A mold 3 with prestressed and laid reinforcement and a lid 4 is installed between the stops 29 on the drive carriage 1 and is fixed on the carriage with the help of locks 30. Then poso

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By means of a drive carriage 20, a portion 5-11 of the tubular sections of the composite void-forming agents is inserted into the mold; their free ends are connected with the help of locks 27 and 28 to the inner ends of the portions 21-24 of the forming-formers. After that, part 5-11 of the tubular sections is disconnected from the crosspiece 19. The drive 2 of the trolley 1 is turned on and the inner ends of the tubular sections 21-24 of the emptying formers are inserted into the mold 3, simultaneously turning on the concrete pump. The concrete mixture through the collector 25, the cavity of the tubular sections 21-24 through their transfer windows 26 enters the form 3, uniformly filled and sealed with hydrodynamic pressure. The carriage 1 is moved (to the left according to the drawing) over the entire length of the mold, at the end of which concrete is being pressurized to at least 0.2 MPa. This pressure is maintained throughout the entire time of withdrawal of the tubular sections 21-24 of the emptying formers from the mold 3. Simultaneously with the release from the form of this part of the tubular sections of the composite emptying formers, the concrete pump is disconnected. After that, the tubular sections 5-11 are connected to the cross-bar 19, the driving carriage 20 is turned on to remove these sections from the mold 3, having previously disconnected them from another part

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21-24 tubular sections. The free ends of all tubular sections of the emptying units are placed on the rollers 31 and 32 of the trolley 1. Then the cover 4 and the form 3 on the trolley 1 are released from the fastening. The mold 3 with the molded plate is transferred to heat treatment. The cycle is repeated.

The use of the invention improves the productivity of the installation and the quality of the products.

Claims (1)

Claims An apparatus for manufacturing products with voids from concrete mixes, containing a replaceable shape and composite flow-forming agents arranged parallel to its longitudinal axis, of tubular sections connected by locks and adjoining adjacent ends, some of which are mounted on a drive carriage by means of a common traverse, so that, in order to increase the productivity and quality of the products, it is equipped with an injection device with a distribution manifold and a lid mounted on e, and the outer ends of the sections of the void-forming are connected to the distribution manifold, and their inner ends are made with dispensing windows. 21 22 23 24 Riga 5 S §. Be0e znon0shad u t ooooooo n H- " tt Yae eanonashedu