SU334078A1 - FORM FOR MANUFACTURING HOLLOW PRODUCTS - Google Patents

Description

Forms for the manufacture of hollow articles such as pipes, rings and similar products from a concrete mix are known, comprising ycTaHOtBenes on the pallet outer formwork, inner core and vibrators.

The proposed form differs from the known ones in order to increase the degree of compaction of the concrete mix and improve the quality of products, a vertical frame is mounted coaxially with a shock absorber located in the gap between the frame and the core, on the radial consoles of which vibrators are fixed.

FIG. 1 shows the proposed form in section; in fig. 2 - the same plan.

The outer split formwork 1 and the inner core 2 of the mold are mounted on the pallet 3. The inner core of the mold is reinforced only in the longitudinal direction, for which two ribs 4 of channels are welded to the entire height of its wall, on which the consoles 5 with vibrators 6 are fixed. Coaxially to the core 2 inside it is mounted a vertical frame, consisting of a thick-walled pipe 7 and ribs 8 radially diverging from it. To these edges are mounted rings 9 from channels. Between the inner wall of the core 2, the shelves and the wall of the channel rings 9 1PO all around the perimeter of the latter are elastic shock-absorbing pads 10.

To prevent the cement paste from leaking out, the gap between the pallet and the walls of the mold is closed with gland sealing // of elastic material.

In the manufacture of pipes on the pallet install external formwork and inner core 2 with the frame. A concrete mix is fed into the gap between the bedding and the core and compacted by vibration molding of the formwork and the core by mounted vibrators (not shown). At the end of the compaction of the concrete mix, the external formwork vibrators are disconnected, and when the vibrators 6 of the core are turned on, the reinforcement of the pipe begins, and the core lifts the crank. Installing the vibrator 6 on the arms that act as levers leads to an increase in the disturbing force transmitted to the core 2, which increases the degree of compaction of the concrete mix in the mold. The core vibrators are disconnected when the end of the core passes through the gland seal 11. The outer formwork and the pallet are removed from the pipe after the moisture

processing the latter.

a ton mixture, including an external formwork installed on the (pallet), an inner core and vibrators, characterized in that in order to increase the degree of compaction of the concrete mix and improve the quality of the products.

coaxially to the core, mounted vertical Caracas with shock absorbers located in the gap between the frame and the core, on the radial consoles of which vibrators are fixed.