SU23069A1 - Device for compaction of sand poured into pipes to be bent - Google Patents

Description

Appliances are known for compacting sand poured into pipes to be bent, in which compaction is performed by tapping the pipe around the periphery with a few valveless pneumatic hammers moving along the axis of the pipe. In such devices, in order to seal sand in pipes of different diameters, it is proposed to mount pneumatic hammers in brackets that are adjustable in the radial direction, and for supplying compressed air to the hammers, the latter are connected to an annular tube with air by a flexible hose. .

In FIG. 1 shows a general view of the device from the side; FIG. 2 is a top view of it with a removable tank for sand and without a conveyor; FIG. 3 is a side view of the proposed sealing device; FIG. 4 - view from above.

On a hollow rack 2 (Fig. 1), provided with openings that are covered by pivoting sleeves 3, a tank 1 for sand is fixed, which is fed into it with the help of elevator 14, closed

housing 13. On the brackets 8 and 9 (Fig. 1 and 2) of the rack 2, the rollers 10 are fastened, through which the cable 11 is thrown. A sealing device 7 is suspended at the free end of the latter, balanced by the load 12 (Fig. 1). The sealing device consists of pneumatic hammers 17 (figs. 3 and 4), hinged in brackets 19, radially adjustable on the annular suspension 18, and to facilitate movement of the device 7 through pipe 4, in which sand is compacted, brackets 19 are fitted rollers 20. The hammers are pressed against the pipe 4 by springs 21 and are connected by flexible hoses 15 to an annular tube 16, to which compressed air is supplied through pipe 15.

To seal the sand in the pipe, the latter is installed in the cone-shaped nest 5 (Figs. 1 and 3) and is fixed by the plate 6, after which it is put on. the device 7 and one or the other sleeve 3 are supplied from above, depending on the height of the pipe. The sand from reservoir 1, through sleeve 3, fills pipe 4, which is tapped with hammers 17, creating the necessary compaction of part sand,

in addition, during the tapping, the device is moved along the pipe.

The subject matter of the invention.

A device for compaction of sand poured into pipes to be bent, in which compaction is performed by tapping the pipe around the periphery with several valveless pneumatic hammers moving along the axis of the pipe, characterized in that the pneumatic hammers 17 under the influence of springs 21 are hinged in sliding arms the brackets 19 to are connected to supply compressed air with a common annular tube 16 by means of flexible hoses 15.

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