SU384959A1 - WORKING ORGAN OF THE CONCRETE MACHINE FOR FILING CANALS - Google Patents

Description

one

The invention relates to a class of machines for the construction of cement concrete roads and lining of irrigation canals.

In existing constructions of concrete-laying machines for lining the channels, the connection of the vibrating compaction bar and the screeding plate is carried out with the help of rubber sheet, which prevents the concrete mixture from flowing off the slope.

Known working body does not exclude completely vibration on the smoothing surface; due to the passive effect of the rubber joint on the concrete, the smoothing plate under the action of non-repeated hydrostatic pressure changes its position during operation, thereby leading to a different force contact with the concrete, and, consequently, to the formation of sinks and cracks on the finished lining; and the concrete mixture accumulating in rubber articulation, especially coarse fractions, contributes to the stretching of the surface layer of the coating and the formation of cracks.

The purpose of the invention is to increase the quality of the lining being laid and the elimination of vibration on the screed.

FIG. 1 shows the proposed working body, top view; in fig. 2 - the same in section.

The rotating screw / is an active joint of the vibrating compaction bar 2 and the screed 3, illuminated to the common frame 4 on the independent suspensions 5 and 6. The screw surface of the screw is fixed on the shaft 7 with the help of the brackets 8. The shaft is rotated from electric drive 9. The screw / has the ability to move with

screw mechanism 10 vertically and smoothing nlita - with the help of screw mechanism 1J but horizontal.

The principle of action of the working body is as follows.

After the passage of the vibrating beam 2, the concrete mixture in the state of vibration excitation under the action of its own weight tends to slide down the slope. The workers of the blades of the screw / during rotation are all the time

sliding contact with concrete, create a constant to the surface of the slope. At the same time, the blades of the shnek move the cement iaste with the participation of increased hydrostatic pressure on

areas with less pressure, and thus provide a flat concrete surface. The constant roller of cement paste, which forms in front of the screed, helps to create a uniform force contact between the concrete and the lower surface.

smoothing plate and thus achieving a smooth surface without shells and cracks.

Winners

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Worker 1LY5 | XH2D MauJuHiii for lining the canals, including a vibrating compaction bar, a smoothing plate and cheeks, characterized in that, in order to improve the quality of the laid facing, the auger is installed between the compaction bar and the screed plate, can be moved in a vertical plane and provided with a spiral block. located parallel to the longitudinal axis of the screw.

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