SU1369901A1 - Concrete placer for moulding the bodies of rotation - Google Patents

Abstract

The invention relates to the manufacture of precast concrete and reinforced concrete products and allows for improving the quality of the products and reducing the consumption of cement through the use of dry concrete mixes. This is achieved by the fact that the paver of the apparatus for forming rotation bodies is equipped with a distribution device in the form of a concentric enveloping screw 3 of the tubular body 4. At the latter end, spiral gauge blades 5 and slots 6 are formed at its free end. connected to the through channels 7, formed at the free end of the tubular body 4. 3 Il.

Description

WITH

O5; O

;about

physical 2

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

The purpose of the invention is to improve the quality of the products and reduce the consumption of cement through the use of dry concrete mixes.

FIG. 1 shows schematically a paver of installations for forming bodies of revolution, radrez; on .fig. 2 — node I in FIG. one; FIG. 3 is a section A-A in FIG. 2,

The paver of the installation for forming bodies of rotation contains a feed bin 2 mounted on the carriage 1, in the lower part of which a covering flexible auger 3 is mounted, a rotary tubular body 4 with spiral calibrating blades 5 and slots 6 on a free conical end in which slope channels 7 are formed connected to the supply pipe 8 of the gate water located along the longitudinal axis of the screw 3. On the carriage 1, a recoil brake 9 is installed, the drives 10 and 11 of rotation in opposite directions, respectively, of the flexible screw 3 and the tubular body 4.

The paver of the installation for forming bodies of rotation works as follows

A mold 13 mounted on a centrifuge 12 with a face collar 14 supported by a screw 15 on the anvil 16 is inserted by moving the carriage 1 to a tubular body 4, and then turning on the drives 10 and 11 of rotation of the latter and the screw 3, dry concrete mix is supplied from the consumable the bunker 2 through the slots 6 into the mold 13, where the spiral blades 5, which create the auger effect, form the reinforced head of the product (column),

0

five

five

0

0

five

0

five

At the same time, through the radial channels 7, mixing water is supplied to the shaping zone, bringing the concrete mixture to the required consistency,

The density of the structure. The concrete of the head end of the column 17 is provided by the action of the brake 9 adjusted to a predetermined value of the reactive force of the rollback of the feeder (about 20-30 N / cm cross-sectional area of the head end of the column)

At the end of the molding movement of the carriage 1, the end piece is gradually removed from the mold 13 at a speed that ensures uniform and high-quality molding of the barrel of the column 17. After the molding process is completed, the supply of water and concrete is stopped, the product is completely removed from the mold 13, which is accelerated to the maximum speed provides the necessary wetting of the concrete with water throughout the thickness and the subsequent hydration of the cement.

Claims (1)

Invention Formula The paver of installations for forming bodies of rotation containing a feed hopper mounted on a carriage with a cantilever hollow screw placed in its lower part, characterized in that, in order to improve the quality of the products and reduce cement consumption by using dry concrete mixes, a form of concentric female tubes of a tubular body with spiral calibrating blades and slots at the free end, with a water supply pipe placed along the longitudinal axis of the screw The shutters are connected to the through channels formed at the free end of the tubular body. 12 fig f