RU2425190C1 - Vibratory disc actuator - Google Patents

Abstract

FIELD: construction.

SUBSTANCE: vibratory disc actuator comprises a disc, a body, two groups of sectors that are movable in vertical direction. The disc actuator is equipped with a special disc with a limiter inside, which by means of a hydraulic cylinder may move inside the disc, and the shaft is connected to the drive and the main part of the disc, the working surface of which comprises the main part and two groups of sectors, which are movable in the vertical direction, at the same time the actuator may rotate and simultaneously transfer compressed air into pneumatic cylinders to ensure vertical oscillations in opposite directions in the first and second groups of sectors.

EFFECT: higher quality of stiff concrete surfaces treatment, reduced vibration of a smoothening machine sent to a portal, higher reliability, opportunity to independently change vibration parameters in process of machine operation.

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Description

The invention relates to the field of the construction industry and can be used for high-quality processing of uncured concrete surfaces from hard concrete mixtures used for civil and industrial construction, as well as for laying road asphalt pavements.

There are various vibration smoothing devices for processing unhardened concrete surfaces of precast concrete products and road asphalt concrete pavements. Processing of building and road materials by known vibrating working bodies of concrete-laying machines is carried out mainly at the leveling stage or as a preliminary operation [1].

Closest to the proposed one is the “Disk working body of a smoothing machine with vertical vibrations”, consisting of a disk with a wavy surface, a planetary gear, a housing, two groups of sectors that are movable in the vertical direction [2].

The disadvantages of the known device are: high metal consumption, the dependence of the frequency of oscillation of the sectors on the speed of rotation of the disk, the inability to change the amplitude of the oscillation of the sectors, the high cost of manufacture.

The technical problem solved by the invention is: the ability to independently change the vibration parameters during operation of the machine, obtaining high quality processing of hard concrete surfaces, reducing vibration transmitted to the portal of the smoothing machine, increasing reliability.

The technical result is achieved by the fact that the disk working body is equipped with a special disk with a limiter inside, which is able to move inside the disk by means of a hydraulic cylinder, and the shaft is connected to the drive and to the main part of the disk, the working surface of which consists of the main part and two groups of sectors moving in the vertical direction while the working body has the ability to rotate and simultaneously transfer compressed air to the pneumatic cylinders to ensure vertical oscillations in opposite directions howl and the second group of sectors.

The invention is illustrated by drawings: in Fig.1 shows a General view of a vibrating disk working body; figure 2 shows a bottom view of two groups of sectors.

Vibrating disk working body is (see figure 1) a device consisting of a disk 1, which is mounted on a shaft 4 installed in the housing 2. The shaft 4 and the housing 2 form a collector. Seals 17 are installed inside the housing 2. Six pneumatic cylinders 5 with spring return are installed on the disk. A limiter 6 is located inside the disk, moving along the guides 7, connected through bearings 8 and the plate 9 to the hydraulic cylinder rod 10 passing through the through cavity of the shaft 4. On the rods of the pneumatic cylinders 5, stops 11 and sectors 12 are fixed, which are part of the working surface of the disk 1 (see Fig. 2). The pneumatic cylinders are connected to the collector by pipelines 13. The shaft 14 is connected to the hydraulic motor 14 through a belt drive 15. The entire disk working element is attached to the rods of the hydraulic cylinders 16 installed on the portal of the smoothing machine.

The device operates as follows: by a hydraulic motor 14, through a belt drive 15, a shaft 4 is driven into rotation with a disk 1 rigidly fixed thereon; at the same time, compressed air is supplied to the manifold formed by the shaft 4 and the housing 2, which is alternately supplied to the openings of the housing 2 and through the channel system of the shaft 4 is supplied directly to six pneumatic cylinders 5, divided into two groups, forcing them to alternate reciprocating oscillations (1st group goes down, 2nd - up). Hydraulic cylinders 16 are used to raise and lower the working body on the work surface. In the process of working a vibrating disk working body, it is possible to change the amplitude and frequency of oscillations. A change in the frequency of oscillation of sectors is realized by changing the frequency of air supply to the pneumatic cylinders. The amplitude A of the oscillations of the sectors is regulated by changing the position of the limiter 6 inside the disk 1, by means of a hydraulic cylinder 10.

Thus, in the process of finishing the surface of the product, the smoothing disc rotates, and the sectors oscillate in the vertical direction. Moreover, while the first group of sectors moves down, the second moves up, thereby compensating for the vibrational impact on the portal. With this action of the working body on the treated surface, the vibrational energy is transferred to the underlying layers of the concrete mixture, causing thixotropic liquefaction of the surface layer of the treated concrete mixture, while the aggregate and cement grains are able to occupy a more stable spatial relative position, due to which dense packing of aggregate grains in gradient layer. When the working body does not tear off the edge of the working surface of the disk from the work surface, which improves the quality of processing of concrete surfaces.

INFORMATION SOURCES

1. Bolotny A.V. Smoothing concrete surfaces. - L .: Stroyizdat. Leningrad. department, 1979. - (Science - builds. production). 17 p., Ill. 6.

2. Patent RU 2270754 C2, 01/26/2004, B28B 11/00, 5 pp., Ill.

Claims (1)

Vibrating disk working body, consisting of a disk, a housing, two groups of sectors that are movable in the vertical direction, characterized in that the disk working body is equipped with a special disk with a limiter inside, which is able to move inside the disk by means of a hydraulic cylinder, and the shaft is connected to the drive and to the main part a disk, the working surface of which consists of the main part and two vertically movable groups of sectors, while the working body has the ability to rotate and simultaneously transmit compressed about air into the pneumatic cylinders to ensure vertical oscillations in opposite directions to the first and second groups of sectors.

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