SU942991A2 - Head for radial moulding of concrete mix products - Google Patents

Description

one

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

According to the main author. St. No. 880756, a well-known head for radial pressing of concrete products, containing a disk with rolling rollers rigidly mounted on a drive shaft and rolling rollers and a guide skirt located under it with a hub mounted on the lower end of the drive shaft by means of rolling bearings 1.

The disadvantage of this head is the impossibility of forming articles with a given cross sectional configuration.

The purpose of the invention is to provide the possibility of forming articles with a given cross sectional configuration.

This goal is achieved by the fact that the head for radial pressing of products from concrete mixtures, containing a disk with rolling rollers rigidly bonded to the drive shaft and a guide skirt located under it with a hub mounted on the lower end of the drive shaft by means of rolling bearings, has at least one an additional disk with rolling rollers, kinematically associated with the drive shaft, with the outer circumference of the main and additional disks inscribed in the cross-section contour apravl guide skirt.

FIG. I schematically shows a head for radial pressing of concrete products, a slit; in fig. 2 is a sectional view in FIG. one.

The head for radial pressing of concrete products consists of a drive shaft 1 connected to a drive shaft.

10 by an electric motor 2 mounted vertically by a mobile yoke 3 mounted on the drive 4 of its vertical displacements. In the lower part of the drive shaft 1 on the rolling bearings 5, a guide skirt 6 is installed, made in the form of the inner surface of the compacting product 7.

On the drive shaft 1, the main disk 8 is rigidly fixed with rolling rollers 2Q mi 9, parallel to which at one level above them, there is an additional disk 10 with rolling rollers 9, and the shaft 11 of the disk 10 through a gear transmission 12 housed in a skirt 6 is kinematically associated with shaft 1.

Above the main 8 and additional 10 discs and the rolling rollers 9 on the shafts 1 and 11 are fixed respectively. Distribution disks 13 and 14, and the outer circumference of the main 8 and additional 11 disks with the rolling rollers 9 fit into the contour of the cross section of the skirt 6. Head for radial pressing products made of concrete mixtures are placed inside the form 15, installed "and the base 16.

A head for radial pressing of concrete products works as follows.

The shaft 1 is driven down by the actuator 4 into the form 15 and stopped therein so that the upper edge of the guide skirt 6 coincides with the lower end of the form 15. Then, turning on the engine 2 of the drive ball 1, the concrete mix is fed to the distribution discs 13 and 14 under the rolling rollers 9 of both disks 8 and 10, pressing it into the gap between the inner surface of the mold 15 and the rollers 9.

After the reverse extrusion of the layer of concrete, the mixture from under the rollers 9 upwards along the entire perimeter of the mold 15, the drive 4 turns on the vertical movement of the head.

When the radial extrusion head moves upward, the concrete mixture is continuously pressed onto the inner surface of the mold 15 and smoothed by the guide skirt b.

left under it a separate inner surface of the product.

The use of the present invention allows to combine the advantages of intensive compaction of a concrete mix with rollers with the advantages of ovoidal cross-section tubes. This ensures a reduction of the material and cost of 1 p. m pipe by 15-25% compared with round pipe roller pressing or ovoidal vibrated, provided equal strength and throughput.

Claims (1)

Invention Formula Head for radial pressing of products from concrete mixes according to ed. St. No. 880756, characterized in that, in order to provide the possibility of forming articles with a given cross sectional configuration, it is provided with at least one additional disk with rolling rollers, kinematically connected with a drive shaft, the outer circumferences of the main and additional disks being inserted into the contour cross section of the guide skirt. Sources of information taken into account during the examination 1. USSR Author's Certificate No. 880756, cl. At 28 At 21/24, 1973. /////////////// 13 Phage.