SU1041305A1 - Apparatus for forming tubular products from concrete mixes - Google Patents

Abstract

1. INSTALLATION FOR FORMING TUBULAR PRODUCTS FROM CONCRETE MIXTURES containing a drive roll mounted on movable and fixed supports placed in a mold cavity with annular reflectors and end washers at the ends, the treadmills of which are supported on the running roll of the roll shaft, and the washers on the running roll are supported on the rolling stock of the roll shaft on the rolling stock and the end washers on the running treads of the roll shaft on the rolling stock of the roll shaft on the rolling stock of the roll shaft, which are supported on the running tracks of the roll shaft, the roll shaft, the running shaft of which rolls on the rolling stock of the roll shaft, and the washers on the running rolls of the roll shaft on the rolling stock of the roll shaft on the rolling stock of the roll shaft, which are supported on the treadmills characterized in that, in order to increase reliability and ease of operation, the rolling shaft is made with annular grooves, and the annular reflectors with toothed protrusions on the inner surface, which azmescheny 1evyh in the ring grooves of the shaft. 2. Installation according to claim 1, characterized in that the jagged protrusions on the inner surface of the annular reflectors are arranged in separate sections, the length of each of which exceeds the circumference of the annular groove of the roll-on shaft. p o (U1

Description

one

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

The closest to the present invention is an installation for molding tubular concrete products, comprising a drive roll mounted on movable and fixed supports placed in a mold cavity with annular reflectors and end shields on which the treadmills are supported on the rolls of the roll roll, and paver 1.

A disadvantage of the known device is that in the process of forming a pipe, both when the concrete mixture is fed into the mold using a concrete paver and during the compaction of the concrete mix by a drive forming roll, it partially enters the form treadmills and rolls. This sometimes leads to stopping the rotation of the mold, as a result of which the under-compacted concrete of the product becomes collapsed. Even if the rotation of the mold does not occur, a strong layering of concrete is formed on the treadmills, which usually requires time-consuming cleaning, and, moreover, the wall thickness of the product increases unevenly, which leads to a decrease in the quality of the product and to some waste of materials. In addition, the flow of concrete mix on the raceway increases the wear of the shaft and the shape and the exit from the, first of all, drive forming shaft. The described drawback can be characterized as an insufficiently high reliability of the interaction between the drive forming shaft and the mold during operation, which also leads to a decrease in the quality of products.

The purpose of the invention is to increase reliability and ease of use.

This goal is achieved by the fact that in an installation for shaping tubular concrete products containing a drive rolling roller mounted on movable and fixed supports placed in a mold cavity with ring reflectors and end shields at the end of which the treadmills are supported on treadmills rolling shaft, and paver, rolling shaft is made with annular grooves, and the ring reflectors - with toothed protrusions. on the inner surface, which are placed in the annular grooves of the shaft.

The jagged protrusions on the inner surface of the annular reflectors are arranged in separate sections. They, the length of each of which exceeds the length of the circumference of the ring groove of the rolling shaft.

FIG. 1 shows schematically an apparatus for forming tubular articles from concrete masses, a plan view; in fig. 2 is a section. L.-A in FIG. one; in fig. 3 - view A in FIG. 2.

The installation consists of a driving roll shaft 1 with running deflectors 5, on the inner surface of which gear teeth b are formed and end faces connected at a time to reflectors 5

pads with treadmills 7, and a paver 8.

The rolling shaft 1 is mounted in the supports of the fixed 9 and movable 10 supports and is kinematically connected with the electric motor 11. The gear projections can be placed on the inner surface of the annular reflectors in separate sections, the length of each of which exceeds the circumference of the annular groove 3 of the shaft 1

The paver 8 is made movable in the longitudinal direction relative to the form 4 and provided with a hopper 12 and a feeder 13 placed in the cavity of the mold 4. The movable support 10 is mounted along the carriage 14 moving along the longitudinal axis of the mold 4.

An apparatus for forming tubular articles from concrete masses works as follows.

Prepared Form 4 is pulled over

0 rolling shaft 1, which is fixed on the movable support 10 so that the treadmills 7 of the form are driven onto the treadmills 2 of the shaft 1, and the toothed protrusions 6 are placed in the annular grooves 3 of the shaft 1, which are then rotated

5 by turning on the engine 11, whereby the mold 4 also begins to rotate, then the feeder 13 of the paver 8 is inserted into the mold 4 and delivers the concrete mix, which is distributed by centrifugal forces over the surface of the mold 4, and compacted by the rolling shaft 1. The ring reflector 5 prevents the concrete mixture from entering the treadmills 2 and 7, and the toothed protrusions 6 are crushed into concrete 1 which is compacted in the annular grooves 3 of the shaft 1.

After the molding of the product has been completed, the mold 4 together with the latter is removed from the shaft 1 and transported to a heat and moisture treatment post.

The use of the proposed installation for forming tubular concrete products in the industry of precast concrete and reinforced concrete improves the reliability of the equipment and facilitates its operation.

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Claims (2)

- 1. PLANT FOR FORMING TUBULAR PRODUCTS FROM 'CONCRETE MIXTURES, comprising a drive roll mounted on a movable and fixed support, located in the mold cavity with ring reflectors and end washers at the ends, the treadmills of which are supported on the treadmills of the roll-off roller and , characterized in that, in order to improve reliability and ease of use, the drive shaft is made with annular grooves, and annular reflectors with serrated protrusions on the inner surface, which are placed They are in the annular grooves of the shaft. 2. Installation according to π. 1, characterized in that the gear protrusions on the inner surface of the annular reflectors are located in separate sections, the length of each of which exceeds the circumference of the annular grooves of the driving shaft. S