SU992205A1 - Apparatus for moulding articles of concrete mixes - Google Patents

Description

(54) DEVICE FOR FORMING PRODUCTS FROM CONCRETE MIXTURES

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The invention relates to the manufacture of products from concrete and reinforced concrete.

A device for compacting concrete mixtures in the manufacture of concrete and reinforced concrete products is known, comprising a feed hopper and mounted on a drive frame mounted on support rollers of the base, a distribution hopper inside which roll rollers with shutters 1 are placed.

Closest to the present invention is a device for molding concrete products containing a feed hopper and mounted on a drive frame mounted on support rollers of the base, a distribution hopper inside which roll rollers are located with flaps located symmetrically to the longitudinal axis of the roller and made in the form curved shells 2 over the radius.

However, the known devices do not provide high performance and are not sufficiently reliable in operation, as the concrete mix hangs over the casing, the concrete particles fall into the gaps between the flaps and the roller, between the shell and the roller, and between

shell and flaps. The concrete mix is set in the gaps and prevents the free rotation of the roller. This interferes with the molding process and does not allow the position of the flaps to be adjusted.

The purpose of the invention is to increase productivity and ensure reliability.

This goal is achieved by the fact that in a device for forming concrete products containing a feed hopper and mounted on a drive frame mounted on supporting rollers of the base, a distribution hopper inside which roll rollers with shutters arranged symmetrically to the longitudinal axis of the roller are placed is rotary rectangular plates with horizontal axes of rotation, with the axis of rotation of each plate located below the axis of rotation of the rolling roller at a distance equal to 0.1-0.3 of the last radius.

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FIG. 1 shows the device, a general view; in fig. 2 - rollers with flaps.

Claims (2)

A device for molding concrete products contains a movable distribution bunker 1 mounted on a drive frame 2 with rolling rollers 3 located between the outlet openings 4 of the movable hopper 1. The outlet holes 4 are formed by the upper cylindrical surface of the roller 3 and the flaps 5 made in the form rectangular plates with horizontal axes of rotation 6 fixed to the walls 7 of the distribution bin 1. The axes 6 are located below the horizontal axis 8 of the cross section of the roller 3 and are geometrically on the horizontal axis 9 of the circle 10, the vertical axis 11 of which coincides with the vertical axis of the cross section of the roller 3, and its center is shifted down to the surface of the molded product 12 at a distance of 0.1-0.3 of the radius of the roller Rp. Here, the diameter of the circle 10 is equal to or larger than the diameter of the roller 3 and is determined from the relationship. At a distance of less than 0.1 Rp, a concrete mix accumulates in the gap between the flaps 5 and the roller 3. At a distance of more than 0.3 Rp, the gap between the roller 3 and the shutters 5 becomes greater than the thickness of the concrete layer to be compacted, i.e., the molding process is disturbed. On the frame 13, the feed hopper 14 is fixedly mounted inside the distribution bin 1 above the outlets 4, the length of the feed bunker 14 being less than the length of the movable bunker 1 by the stroke of the drive frame 2. Under the outlets on the cart 15 is mounted; Form 16. The proposed device works with: as follows. The concrete mixture is fed into the fixed bin 14. The drive frame 2 reciprocates, moving the movable bunker 1, the rollers 3 and the outlets 4. The concrete mix from the fixed feed hopper 14 flows continuously into the distribution bin 1. In the distribution movable bunker I the concrete mix falls directly on the upper surface of the rotating rollers 3, and then into the outlet openings 4 formed by the flaps 5 and the outer surfaces of the rollers 3. In the gap between the lower edge 17, the flaps and 5 and the plane formed by molding a packed bed of concrete, which jamming conditions of the concrete mixture is not higher than 0.4 is selected radius Rp roller. The height of the concrete layer being compacted depends on the diameter of the roller 3, the particle size distribution of the mixture and is ensured by turning the flap 5 around the axis 6. The use of the proposed device improves the molding performance and ensures the reliability of the devices. Claims An apparatus for forming concrete products, comprising a feed hopper and mounted on a drive frame mounted on base support rollers, a distribution hopper, inside of which roll rollers are placed with shutters arranged symmetrically to the longitudinal axis of the roller, characterized in that performance and reliability, the flaps are made in the form of rotary rectangular plates with horizontal axes of rotation, with the axis of rotation of each plate olozhena below the axis of rotation of the roller compacted at a distance equal to 0,1-0, 3 the radius of the latter. Sources of information taken into account during the examination 1. USSR author's certificate No. 527292, cl. B 28 B 13/02, 1975. 2. USSR author's certificate number 616143, cl. B 28 B 13/02, 1975.