SU735406A1 - Mould for making tubular articles from concrete mortar - Google Patents

Description

(54) FORM FOR THE MANUFACTURE OF TUBULAR PRODUCTS FROM A CONCRETE MIX

I

The invention relates to the production of non-pressure reinforced concrete pipes and may find application in the manufacture of pipes by the method of vertically mobile forming with immediate dismantling.

A well-known form for the manufacture of concrete and reinforced concrete pipes, comprising fixed sections mounted on a pallet and connected in series with a common demoulding slope, the contacting flanges of which have respectively centering the recess and protrusion 1.

One of the disadvantages of the mold is uneven wear of the sections.

When concrete is loaded through the upper end of the formwork, due to the abrasive effect of the concrete mixture, the internal dimensions of the upper sections go out of construction earlier than the lower ones, because the entire mass of concrete passes through the upper sections.

When the upper section is worn, its diameter increases, which further complicates immediate demolding, i.e., inconvenience during operation.

The aim of the invention is to provide ease of operation.

This is achieved in that in the form for the manufacture of tubular products from concrete mix containing fixed sections mounted on a pallet and connected in series with a common demoulding slope, the contacting flanges of which have correspondingly centering slots and protrusion, the sections section diameters are 1000: 1001 - 1004.

FIG. 1 schematically shows the shape

10 for the manufacture of tubular concrete products, a slit; in fig. 2 - section junction, shape (on an enlarged scale).

Claims (1)

The tubular product form consists of a pallet 1, on which one of the series-connected integral sections 2 is installed with a common stripping slope. Sections 2 contact 20 with each other by flanges 3 having respectively centering the undercut 4 and the protrusion 5. The flanges are bolted 6. The sections at the junction points are made with slots, the ratio of internal diameters of the sections being 1000: 1001-1004. with the form, the joined sections 2 are installed on the pallet 1 and the concrete mix is fed into it through the feed hopper 7. After the mixture is compacted, the mold is transferred to the demolding station, where sections 2 are disconnected from the pallet 1 and raised, upwards. Then the cycle is repeated. The proposed form allows to increase the service life of the form due to the fact that the upper section is most susceptible to abrasive wear, can be made with thicker than all other sections, walls; to simplify and speed up the repair of the damaged form due to the replacement directly at the place of the corresponding section; after the corresponding treatment of the inner surface, the upper sections worn out over the inner diameter can be reused as lower sections, and also provides the possibility of obtaining high-quality products throughout the operation of the mold. Claim Form for the manufacture of tubular products from concrete mix, containing fixed sections mounted on a pallet and connected in series with a common demoulding slope, the contacting flanges of which have correspondingly centering recess and protrusion, characterized in that, for ease of operation, sections made with ledges, and the ratio of the internal diameters of the sections is 1000: 1001-i-1004. Sources of information taken into account during the examination 1. Popov A.N. Concrete and reinforced concrete pipes. M., stroiizdat, 1973, p. 83 g