RU2368497C1 - Manual vibration disk-type smoothing machine with magnetic activator - Google Patents

Abstract

FIELD: engine and pumps, construction engineering.

SUBSTANCE: manual vibration disk-type smoothing machine with magnetic activator consists of the frame supporting motor drive that incorporates two-stage reduction gear, the frame being furnished with two side handles. Aforesaid motor drive with two-stage reduction gear is coupled, via shaft, with vibration ratchet mechanism whereto smoothing disk shaft is attached to make processed material vibrate. Smoothing disk is made from magnetoconducting material. Note here that magnetic activator is arranged at the frame lower part. This magnetic activator consists of cross plate and a set of permanent high-power magnets. Each pair of the said magnets is arranged so that the like poles face each other. There is a possibility to vary magnetic field gradient via adjusting distance between magnets from 0.1 to 4 mm. Horizontal motor rotation drive runs in bearings. The said motor is driven by low-power friction-type-gear motor.

EFFECT: higher quality of mix processing, faster mix hardening, higher water-retaining capacity, reduced delamination.

2 cl, 2 dwg

Description

The invention relates to the field of the construction industry and can be used for high-quality processing of non-hardened surfaces of products prepared with the use of binders for civil and industrial construction.

There are various smoothing machines for processing unhardened concrete surfaces of precast concrete products (1). Processing known smoothing machines is carried out by the interaction of the working body with the uncured processed surface of the product.

Closest to the proposed is a machine for finishing concrete surfaces (2), containing a self-propelled portal, a drive shaft, a magnetic smoothing disk, a magnetic field source in the form of a spiral.

A disadvantage of the known devices is the inability to change the direction and magnitude of the magnetic flux, the effect only on the surface layer of the concrete mixture, the low intensity of the processes of thixotropic dilution of the medium with the filling of the aggregate and mechanical redistribution of the components in this layer in the most dense packaging, which causes defects to appear during the formation of products stress concentrators, the inability to provide high quality surface treatment products, high metal b.

The technical result solved by the invention is to obtain high quality processing and improve the rheological characteristics of the mixture prepared with the use of binders, accelerate the rate of hardening of the mixture prepared with the use of binders in the early stages, increase the water-holding ability and reduce the delamination of the prepared material.

The technical result is achieved by the fact that a manual vibratory disk smoothing machine with a magnetic activator, consisting of a frame with a rotary drive motor mounted on it with a two-stage gearbox, on the sides of which there are handles, the function of which is to hold the smoothing machine by the operator. The rotational drive of the electric motor with a two-stage gearbox is connected via a shaft to a vibrating ratchet mechanism to which a shaft of a smoothing-out disk is attached and whose function is to create a vibrational effect on the material being processed by means of a smoothing-out disk made of magnetic material. Moreover, in the lower part of the frame is a magnetic activator, consisting of a cross-shaped plate and a group of permanent high-energy magnets, each pair of which is located in the group of the same poles to each other with the possibility of changing the magnetic field gradient by adjusting the distance between the magnets from 0.1 to 4 mm, with a horizontal rotation drive on a bearing support with independent rotation from the shaft of the smoothing-down disk from a low-power electric motor with friction transmission. At the same time, guides are installed on the frame, the function of which is to move the magnetic activator in a vertical plane with a simultaneous change in the magnitude of the magnetic flux created by a group of permanent high-energy magnets onto the material being processed.

The invention is illustrated by drawings: in Fig.1 shows a manual vibrating disk smoothing machine with a magnetic activator, Fig.2 shows a magnetic activator view from below.

A manual vibratory disk smoothing machine with a magnetic activator, consists of a frame 1, with a rotation motor drive 2 mounted on it with a two-stage gearbox 3, on the sides of which there are handles 4. The rotation motor drive 2 with a two-stage gearbox 3 is connected via a shaft 5 to a vibration ratchet mechanism 6, to which the shaft of the smoothing-down disk 7 is attached, on which the smoothing-down disk 8 made of magnetic-conductive material is fixed. In the lower part of the frame there is a magnetic activator 9, consisting of a cross-shaped plate 10 and a group of permanent high-energy magnets 11, which has a horizontal rotation drive on a bearing support 12 s from a low-power electric motor 13 through a friction gear 14. At the same time, guides are installed on the frame fifteen.

A manual vibratory disk smoothing machine with a magnetic activator operates as follows: when the electric motor 2 is mounted on the frame 1, the torque is transmitted through a two-stage gearbox 3 and shaft 5 to the ratchet vibration mechanism 6, then through the shaft of the smoothing disk 7 to the smoothing disk 8, made from magnetic material. After that, the operator, holding the manual vibrating disk smoothing machine with magnetic activator by the handle 4, sets it on the surface to be smoothed, turns on the low-power electric motor 13, which rotates the magnetic activator 9 in the horizontal plane through the friction gear 14 and is mounted on the bearing support 12 with an independent rotation from the shaft of the smoothing disc. If it is necessary to change the magnitude of the magnetic flux magnetizing the processed material, the magnetic activator is moved in a vertical plane along the guides 15. To change the magnetic field gradient, the distance between the permanent high-energy magnets 11 mounted on the cross-shaped plate 10, with the same poles to each other, can be changed within from 0.1 to 4 mm.

Thus, the present invention, due to the effect of vibration in the vertical plane, increases the intensity of the processes of thixotropic dilution of the medium with the sinking of the aggregate and mechanical redistribution of the components in this densest package. The result of the action of magnetic field forces on water in a mixture prepared with the use of binders is the development of the following processes: dispersion of molecular bonds and depolymerization of the liquid phase (dissociative process); the formation of a new mixture, more streamlined with respect to the initial systemic and structural organization; relaxation of the mixture prepared using binders to the initial stationary state (stabilization process). This leads to an improvement in the rheological characteristics of the mixture prepared with the use of binders, the rate of hardening of the material in the early stages is accelerated, the water-holding ability is increased, and the stratification of the product prepared with the use of binders is reduced.

Information sources

1. Bolotny A.V. Smoothing concrete surfaces. - Leningrad, Stroyizdat. Leningrad. 1979. - (Science - to the construction industry). 17 s., Ill. 6.

2. Patent for the invention No. 2188757 dated 10.09. 2002.

Claims (2)

1. A manual vibratory disk smoothing machine with a magnetic activator, consisting of a frame with an electric motor rotation drive attached to it with a two-stage gearbox, on the sides of which there are handles, characterized in that the electric motor rotation drive with a two-stage gearbox is connected via a shaft to a vibration ratchet mechanism, to to which a shaft of a smoothing-down disc is attached, which has the ability to create a vibrational effect on the material being processed by means of a smoothing-down disc, filled with magnetic material, and in the lower part of the frame there is a magnetic activator, consisting of a cross-shaped plate and a group of permanent high-energy magnets, each pair of which is located in the group of the same poles to each other with the possibility of changing the magnetic field gradient by adjusting the distance between the magnets from 0, 1 to 4 mm with a horizontal rotation drive on a bearing support with independent rotation from the shaft of the smoothing-down disk from a small electric motor oschnosti with friction transmission. 2. The device according to claim 1, characterized in that the frame is equipped with guides that are able to move the magnetic activator in a vertical plane with a simultaneous change in the magnitude of the magnetic flux created by the group of permanent high-energy magnets on the material being processed.

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