SU1368179A1 - Apparatus for compacting concrete - Google Patents

Abstract

The invention relates to devices for the surface compaction of concrete mixtures. The goal is to improve the quality of molded products. The device contains a portal with a drive of vertical displacements of the upper and lower frames connected with each other by elastic elements, the upper U-shaped frame in contact, by means of rollers, with the guides of the portal on which the adjustable stops are located, and the vibration exciter is mounted on the lower frame and connected with connecting rods sealing plate hinged to the frame. To improve quality (molded products and reliability of operation, the vibrating plate, which has an elastic suspension to the lower frame, is equipped with racks with support rollers and limit switches, and the lower frame with mounted synchronized drive and driven shafts with cams in contact with the support rollers. 5 ill. with (L

Description

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The invention relates to the production of precast concrete and reinforced concrete.

The purpose of the invention is to improve the quality of formulated products.

Figure 1 shows the device when the sealing plate is operating, from the side; figure 2 - the same, when operating the plate; on fig.Z - section aa in figure 1; figure 4 - the position of the eccentrics and roller stops when the working position of the vibrating plate; on fig.Z - the same, in the off position vibrating plates.

The device for compacting the concrete mix contains a self-propelled portal 1, to which, by means of power cylinders 2, is attached the upper U-shape of frame 3, which has guide rollers 4 and is connected by means of elastic elements 5 to the lower frame 6, on the front of which is fixed crank vibration exciter 7 associated with the V-belt transmission 8c driven by a motor 9.

The tamping plate 10 is connected by means of connecting rods 11 to the vibration exciter 7, and to the lower frame 6 by means of joint 12 and pillars 13. To fix the position of the plate 10 on the self-propelled gantry 1, the stops 14 are adjustable in height. To the lower frame 6 on the elastic suspension bracket 15 is attached vibrating plate 16, on which vibrators 17 are fixed, racks 18 with roller stops 19, limit switches 20 and 21 are mounted on racks 18.

On the bottom frame 6 there is mounted a mechanism for vertical movements of the vibrating plate 16, consisting of the drive 22, the chain drive 23, the drive shaft 24. And with the gear 25 of the driven shaft 26- synchronized with it. At the ends of the shafts. 24 and 26, an eccentric 27 is fixed with locking grooves, on the outer ends of which the followers 28 and 29 are located.

The device works as follows.

Height-adjustable stops 14 are installed at a predetermined height, power cylinders 2 lower the tool, include a drive for moving portal 1 and an electric motor 9, which drives the crank exciter 7. Rammer plate 10 levels and pre-compresses the concrete mix in the mold, leaving the mixture to allow above the form level. In this case, the vibrating plate 16 is raised above the form level by the eccentrics 27. After the plate 10 leaves the mold, the exciter 7 is turned off and the portal 1 is set so that the vibrating plate 16 is located above the mold. The actuator 22 is turned on, the shafts 24 and 26 are turned 180 ° in opposite directions, the eccentrics 27 come out of contact with the roller stops 19 and the pusher 28 presses the button of the limit switch 21, the actuator 22 turns off. The vibrating plate 16 is lowered onto the concrete mix, the vibrators 17 are turned on, and the mixture is additionally compacted within the required time, and the plate 16 has the possibility to lower below the edge of the mold. After the seal is completed, the actuator 22 is turned on again, the shafts 24 and 26 are turned 180, the eccentrics 27 come into contact with the roller stops 19, the pusher 29 presses the button of the limit switch 20, the actuator 22 turns off, the vibrating plate 16 raises-1c and locks in the off position.

Claims (1)

Invention Formula A device for compacting a concrete mix containing the upper and lower sections of the frame placed in the vertical guides of the self-propelled gantry and connected between each other by shock absorbers and sequentially mounted on it along the tamping plate with a crank oscillation activator and spring-loaded with respect to the lower section of the frame a vibrating plate, characterized by that, in order to increase the quality of the molded products, it is equipped with a mechanism for vertical movements of the vibrating plate in the form of synchronized drive synchronized kontaktir5toschih of recesses and with the surfaces of the last roller abutments are mounted respectively on the lower frame section and compactors. 2f W No. Z9 W27-18fffffrffrffffffffffffffrrfrfffrffffffffffffffffffffffrr fffffffff FIG 3 FIG. h 21 5