RU2348519C1 - Installation for concrete mix floating with working unit equipped with integrated rollers - Google Patents

Abstract

FIELD: mechanics; construction.

SUBSTANCE: invention implementation enables high-quality treatment of unconsolidated surfaces of reinforced concrete products fabricated of harsh concrete mixes and designed to be used for civil and industrial construction purposes. The installation consists of a self-propelled gantry, a drive and a shaft whereon the working unit with integrated rollers is mounted. The integrated rollers are mounted on three 120° unfolded horizontal axles. The working unit consists of a damper, a harmonic vibration generator connected to the vertical drive shaft, a planetary reduction gear and a bevel gear group. Each roller is divided in three parts (the outer, the inner and the mid rollers) capable of independent rotation at varied rates as a result of different gear ratios of the bevel gear group being actuated.

EFFECT: improved quality of product surface treatment; enhanced concrete mix compaction degree and metal intensity minimisation.

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Description

The invention relates to the field of construction industry and can be used for high-quality processing of non-hardened surfaces of reinforced concrete products molded from hard concrete mixtures for civil and industrial construction.

There are various smoothing machines for processing uncured concrete surfaces of precast concrete products (Bolotny A.V. Smoothing of concrete surfaces. - L .: Stroyizdat. Leningrad, department, 1979). 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 invention is a smoothing machine for finishing concrete surfaces, containing a self-propelled portal, a drive and a shaft on which a smoothing roller working body is fixed (Bolotny A.V. Smoothing of concrete surfaces. - L .: Stroyizdat. Leningrad. Department, 1979 - 17 p., Ill. 6).

A disadvantage of the known device is the inability to provide high quality surface treatment of products and the required degree of compaction of the concrete mixture and high metal consumption.

The technical problem solved by the invention is to obtain high quality surface treatment of products, increasing the degree of compaction of concrete mix and reducing metal consumption.

The technical result is achieved by the fact that the installation for smoothing the concrete mixture containing a self-propelled portal, a drive and a shaft on which is fixed a smoothing working body with integrated rolls located on three horizontal axes rotated by 120 degrees, consisting of a damper, a harmonic oscillation pathogen connected to vertical drive shaft, planetary gear and bevel gear, and each of the rolls is divided into three parts - the inner, middle and outer rolls, each of which has the ability to rotate at different angular speeds by performing different gear ratios of a bevel gear.

The invention is illustrated by the drawings: in Fig. 1 shows a installation for smoothing concrete mixture with a working body with integrated rolls, Fig. 2 shows a smoothing working body with integrated rolls, Fig. 3 shows a smoothing working body with integrated rolls - view A from below, figure 4 presents a bevel gear.

The installation comprises a self-propelled portal 9, a drive 10 and a shaft on which a smoothing-down working body 8 is mounted with integrated rollers placed on three horizontal axes rotated 120 degrees, consisting of a damper 1, a harmonic oscillation exciter 2, connected to a vertical drive shaft, a planetary gearbox 3 and a bevel gear 4, and each of the rolls is divided into three parts - inner 5, middle 6 and outer 7 rolls, each of which has the ability to rotate at different angular speeds due to I have different gear ratios of a bevel gear.

Installation works as follows. When the electric motor is turned on, the rotation from the drive shaft is transmitted to the harmonic oscillation exciter 2, the oscillations of which are transmitted to the working element 8, but are not transmitted to the portal 9, since they are quenched by means of dampers 1. Next, the torque is transmitted to the planetary gearbox 3, and then to the conic single-stage gearbox gear 4. As a result, the smoothing-down working body rotates around a vertical axis, as well as around three horizontal axes rotated by 120 degrees. The inner 5, middle 6 and outer 7 rolls of the smoothing-down working body rotate with different angular speeds in order to achieve the same linear speeds at the point of contact with the workpiece for a more even smoothing. The difference in angular velocities is achieved by selecting different gear ratios of the bevel gear 4.

The advantage of this installation is the high quality of processing of hard concrete mixtures, obtaining a high-strength surface layer, the smallest roughness, low energy consumption.

Claims (1)

Installation for smoothing concrete mixture containing a self-propelled portal, a drive and a shaft on which a smoothing working body with integrated rollers mounted on three horizontal axes rotated at 120 ° is fixed, consisting of a damper, a harmonic oscillation pathway connected to a vertical drive shaft, a planetary gearbox and a bevel gear, each of the rolls is divided into three parts - the inner, middle and outer rolls, each of which has the ability to rotate with different angular speeds z through the implementation of different gear ratios bevel gear.

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