Concrete surface finisher disc tool with variable gradient of magnetic field

FIELD: process engineering.

SUBSTANCE: invention relates to construction and can be used for high-quality processing of uncured reinforced concrete surfaces of articles moulded from concrete mixes for civil and industrial construction. Finisher disc tool comprises drive shaft to transmit rotation to smoothing disc made from magnetically conducting material wherein high-power magnets are secured. Said smoothing discs can rotate in opposite directions at different angular velocities. Note here that outer smoothing disc is rigidly secured to planetary train. Inner smoothing disc is rigidly attached to the shaft. Outer and inner smoothing discs have recesses made in adjacent zone of rotation to accommodate alternating poles of high-power magnets.

EFFECT: higher surface quality and strength, decreased roughness and power consumption.

 

The invention relates to the field of construction industry and can be used for qualitative processing of uncured surfaces of concrete products, molded from concrete mixtures for use in civil and industrial construction.

Known disk working body smoothing machine, the drive shaft which is able to transmit torque to the planetary gear, which is fixed smoothing disks, having the opportunity to make the rotation in opposite directions at different angular velocities (EN 27526, 10.02.2003). Also known manual smoothing machine [RU No. 2368497 C1, 27/09/2009, B21B 11/00], comprising a drive shaft, which has the ability to transmit torque smoothing disk of like material, which has high-energy permanent magnets.

The disadvantage of these machines is that there is no magnetic activator with the alternating magnetic field, as well as smoothing disks performs rotation in opposite directions at different angular velocities. Processing known concrete finishing machines is accomplished by interaction of the working body with the uncured surface processed products. When the movement of the working body of the concrete finishing machine on the uncured concrete surface is ness, happen kinetic processes leading to changes in the physical and geometrical characteristics of the surface coming into contact with the working body, as well as the activation of the concrete, the alternating magnetic field generated by a high-energy permanent magnets.

The technical result - obtaining high quality surface treatment of concrete products, obtaining high strength of the surface layer.

The technical result is achieved by the fact that the disk screed concrete finishing machine that contains the drive shaft, which has the ability to transmit torque smoothing drives like material in which is mounted high-energy permanent magnets, smoothing disks have the opportunity to make the rotation in opposite directions at different angular velocities, according to the invention, the external smoothing disk rigidly attached to the housing of the planetary mechanism, internal smoothing disk rigidly fixed to the shaft, the outer smoothing disk and internal smoothing disk are adjacent the zone of rotation of the deepening placed in them alternating poles of high-energy magnets.

The invention is illustrated by drawings, where figure 1 presents the disk screed concrete finishing machine is with high-energy permanent magnets and counter-rotating elements of the drive figure 2 shows the magnets used for smoothing machine.

Disk screed concrete finishing machine consists of a damper 10, which has the ability to absorb vertical vibrations of the housing 3, the drive shaft 1 driven by an electric motor. On the shaft 1 is elastic coupler 2, and a gear wheel 4 which engages with satellites 5, fastened to the Cup 6, which in turn are in mesh with a ring gear on the inner surface of the housing 3. External smoothing disk 7 is rigidly attached to the housing 3 of the planetary mechanism with the aid of bolts, internal smoothing disk 8 is rigidly fixed to the shaft 1 by means keyway, external smoothing disk 7 and the internal smoothing disk 8 are adjacent the zone of rotation of the deepening placed in them alternating poles of high-energy magnets 9.

The device operates as follows. When the motor is started through the coupling 2, the planetary mechanism is transmitted to the rotation shaft 1, which is rigidly fixed to the inner smoothing disc 8 with the keyway. Planetary gear transmits rotational movement opposite to the direction of rotation of the drive shaft 1 to the housing 3, which is in rigid connection with the external which smoothing them by the disc 7 by means of bolts, in the adjoining area of rotation in the recesses are alternating poles of high-energy magnets, which create alternating magnetic field that activates the workpiece.

The advantage of this design is the high quality processing of concrete mixtures, obtaining high strength of the surface layer, the lowest surface roughness, low energy consumption.

The result of application of force of magnetic field on water from the mixture prepared with the use of binding agents is the development of the following processes: molecular dispersion relations and depolymerization of the liquid phase (dissociatively process); the formation of a new more streamlined compared to the original system - the structural organization of the mixture; relaxation of the mixture prepared with the use of binders to the original steady state (stabilization process). Which leads to the improvement of the rheological characteristics of the mixture prepared with the use of binding agents, accelerating the rate of hardening of the material in the early stages, increases water-holding capacity and reduced separation of the products prepared with the use of binders.

It is therefore advisable to use the data of the working bodies of high-energy permanent magnets and opposite torque the I elements of the disk.

Disk screed concrete finishing machine that contains the drive shaft, which has the ability to transmit torque smoothing drives like material, which is fixed high-energy permanent magnets, smoothing disks have the opportunity to make the rotation in opposite directions at different angular velocities, characterized in that the external smoothing disk rigidly attached to the housing of the planetary mechanism, internal smoothing disk rigidly fixed to the shaft, the outer smoothing disk and internal smoothing disk are adjacent the zone of rotation of the deepening placed in them alternating poles of high-energy magnets.



 

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