RU194932U1 - ROLLING WORKING BODY WITH A SPRING SURFACE - Google Patents

Abstract

The utility model relates to the field of the construction industry and can be used for high-quality processing of uncured concrete surfaces of reinforced concrete products molded from hard concrete mixtures to obtain the required roughness class on the front surface. The technical problem solved by the utility model is to obtain high quality smoothing, the smallest roughness the processed surface, high strength of the product. The technical result is achieved by the fact that the working surface in the mold is formed by a spring, which has the ability to perform oppositely directed oscillations along the axis of the roll, created by the oscillation generator, the advantage of this design is the high quality of processing hard concrete mixtures, obtaining a high-strength surface layer, the durability of the concrete-finishing machine due to the reduction of friction between the roller working body formed by the spring and the concrete mixture low power consumption.

Description

The utility model relates to the field of the construction industry and can be used for high-quality processing of uncured concrete surfaces of reinforced concrete products molded from hard concrete mixtures to obtain the required roughness class on the front surface.

There are various roll-down smoothing machines for processing non-hardened concrete surfaces of precast concrete products [1]. Processing known roll smoothing machines is carried out by the interaction of the working body with the uncured processed surface of the product.

Also known is a roll smoothing machine with a transversely vibrating smoothing working body, comprising a pump station connected to an oscillation generator consisting of a hydraulic motor, an eccentric conical shaft, a plunger pair, an adjusting screw and transmitting oscillatory movements of the plunger pair rigidly connected to the roll working body directed across machine movements [2].

A disadvantage of the known device is the uneven wear of smoothing working bodies, low quality of smoothing of reinforced concrete products.

The technical problem solved by the utility model is to obtain high quality smoothing, the smallest roughness of the processed surface, high strength of the product.

The technical result is achieved by the fact that the working surface of the roll is formed by a spring having the ability to perform oppositely directed vibrations along the axis of the roll created by the oscillation generator.

The essence of the utility model is illustrated in the drawing. In (Fig. 1), a roll working body with a surface formed by a spring is shown.

The roll working body consists of an electric motor 21, pulleys 22, 23 of the drive shaft 24, bed 25, return spring 19, housing 18, bearings 17, spline sleeve 16, springs 15, roll 14, washers 13 and output shaft 11. To the hydraulic pump station includes a belt-driven hydraulic pump 1, an overflow valve 2, and a filter 3. The oscillation generator consists of a hydraulic motor 4, an eccentric conical shaft 5, an adjusting screw 6, and a plunger pair 7; 9, and rubber sleeve 8.

The roll working body works as follows: from the electric motor 21, by means of a belt drive 20, rotational movement is transmitted to the drive shaft 14, on which the plate 13 is fixed, on the spline sleeve 16, rotating in the bearing 17 and transmitting the rotation to the roll 14 with the spring 15. The hydraulic pump the station drives the oscillation generator. Using the adjusting screw 6, the eccentric conical shaft can be lowered or raised, which allows you to change the amplitude of the oscillations of the plunger pair 7. The working fluid, which is under pressure in the rubber sleeve 8, transmits oscillatory movements of the plunger pair 9, rigidly connected to the driven shaft 11, with a spline sleeve 10 , bearings 12, through the plate 13 transmits vibrations in the horizontal plane to the roll formed by the spring 15.

With this action of the working body on the surface to be processed, the energy of roll vibrations is transferred to the underlying layers of the concrete mixture, while the bonds between the concrete particles are broken, and their shear resistance is reduced.

The advantage of this design is the high quality of processing hard concrete mixtures, obtaining a high-strength surface layer, the durability of the concrete-finishing machine due to the reduction of friction between the roller working body formed by the spring and the concrete mixture, low energy consumption.

SOURCES OF INFORMATION

1. Bolotny A.V. Smoothing concrete surfaces. - L .: Stroyizdat. Leningrad. Branch, 1979.

2. Patent RU 2168412 С2, 7 В28В 11/00, Е01С 19/40, Roller smoothing machine with a transversely vibrating smoothing working body / L. Mamaev, I. M. Efremov, A. A. Kononov, A. V. Karpenko .; 06/10/2001.

Claims (1)

A roll working body with a surface formed by a spring comprises a pump station connected to an oscillation generator consisting of a hydraulic motor, an eccentric conical shaft, a plunger pair, characterized in that the working surface of the work roll is formed by a spring having the ability to perform oppositely directed vibrations along the axis of the roll, created by the oscillator.

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