SU1175716A2 - Concrete-laying machine - Google Patents

Abstract

CONCRETE ON AUTH. No. 657990, characterized in that, in order to increase service life and ease of operation, the reversible belt feeder is equipped with ends of a driven drum, located opposite the lead drum, and spring-loaded cleaning devices, mounted on the feeder by means of lever-hinged suspensions and made in form of contact with the idler branch of the feeder of the driving cylinders with screw thread, the tension drum being placed along the axis of symmetry of the feeder under its working branch so that its upper image is thin located above the top of the leading and end driven S drums. (L SP

Description

1 1 The invention relates to the manufacture of products from precast concrete, namely, devices for laying concrete mix into forms. The purpose of the invention is to increase the service life and ease of operation. Figure 1 shows the proposed paver, a General view, in Fig.2 the hopper of the proposed paver, top view; Fig. 3 is a section A-A in Fig. 1; Fig. 4 is a device for cleaning a tape, cross section (variant). The paver contains a self-propelled gantry 1 with a movement mechanism 2, a trapezoidal hopper 3, a mechanism 4 for its movement along the portal 1 in the transverse direction, a reversible belt feeder 5, dispensing funnels 6 and 7 mounted on levers 8 a wide screeding device 9 connected to a load cylinder 10, and a narrow leveling device 12 mounted on snags 11 with a lower window in the form of an elongated rectangle with a drive 13 turning it around a vertical axis connected to a power tsipindrom 14. Windows of delivery 3 are overlapped by elastic valve locks 15 connected to the power cylinders 16. The belt feeder 5 comprises a driving drum 17 with sprockets 18, 19 and 20, a tension drum 21 with stars 22 and 23, a belt 24 and a driven drum 25 mounted in the middle part of the feeder 5 by means of tensioning devices 26 in such a way that its upper forming is located above the upper forming extreme drums - the leading drum 17 and the tension drum 21. On the axes of the leading drum 17 and on the pull drum 21 are installed with the possibility of rotation around These arm-and-swivel hangers 27, on which their cleansing devices are mounted, made for example in the form of a screw-mounted tsipindra 28 on the outer surface of the kinematically connected with the drums 17 and 21 of the feeder 5, the chain 29, the sprockets 30 and 19. Lever suspension 27 with the help of elastic-adjustable devices. 62 31 are connected with the brackets 32 of the frame 33 of the feeder 5. The cleaning device can be made in the form of flat ribs 35 welded to the cylinder 34 (figure 4), to which strips 37 of elastic material (transport tapes, rubber). The gaps between the lower edges of the walls of the bunker 3 and the tape 24 of the feeder 5 are overlapped with elastic curtains 38, the lower ends of which are bent inside the bunker 3 and laid on the tape 24 of the feeder 5. The driving drum 17 is connected to the reversing drive 40 of the feeder by means of sprocket 20 and The chain 41 connects the sprockets 18 and 22 of the drums 17 and 21. The paver operates as follows. The hopper 3 with closed elastic valve valves 15 is loaded with concrete. At the same time, the concrete mixture lying on the ends of the shutters 38 curved inside the bunker tightly presses them to the belt 24 of the feeder 5, which prevents the penetration of small particles of the concrete mixture and cement milk beyond the limits of the bunker 3 and, consequently, on the upper surface of the lower branch of the belt 24. The paver's movement mechanism 2 and the hopper movement mechanism 4 are turned on, and a funnel 6 or 7 is installed above the mold. Using a power cylinder 10 or 14, the wide leveling device 9 or the narrow leveling device is lowered to the molding level Device 12. With the help of the cylinder 16, the elastic valve shutter 15 is unlocked from the side of the funnel through which the concrete mixture will be fed into the mold. I The feeder 5 is put into operation, with the result that the concrete mixture from the belt 24 (from the hopper 3) is fed through the funnel 6 or 7 into the mold. Moving along the mold, the paver fills it along its entire length. If a wide product is being molded using a wide scaling device 9, then the mechanism 4 for the movement of the bunker 3 is turned on, as a result of which the shuttle moves it is necessary to fill the entire container with a concrete mixture

Whole leveling device, and through it the form across its width When forming narrow linear products, a narrow leveling device 12 is used. Turning 90 narrow leveling device 12, having a lower output window in the form of an elongated rectangle, allows to form linear in one pass products of different widths, located anywhere in the wide range

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on. When this reversing drive 40;

feeder 5 include in the opposite direction.

When the belt 24 is pulled out during operation, it is tensioned by the tension device 26 by moving the middle drum 25 upwards. In this case, the distance between the drums 17 and 21 always remains unchanged, which prevents the concrete mixture from falling outside the funnels.

1e

FIG. 2

3S

37

FIG L

Claims (1)

Concrete Paver »657990, characterized in that, in order to increase the service life and ease of use, the reversible belt feeder is equipped with an end driven drum located opposite to the driving drum, and spring-loaded cleaning devices mounted on the feeder by means of lever-hinged suspensions and made in the form of contacting with a single branch of the feeder of the drive cylinders with screw thread, and the tension drum is placed along the axis of symmetry of the feeder under its working branch so that its upper generatrix is located on top of the forming master and slave drums end.