SU427861A1 - RESONANT VIBRATOR - Google Patents

Description

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This invention relates to the building materials industry.

According to the main author. St. No. 321374 is a well-known resonant vibroplatform, which is mounted by means of elastic elements on a sprung reactive plate under a movable frame, at one end of which is suspended from elastic connections, a spring-mounted resonator plate with a vibration exciter.

The purpose of the invention is to facilitate and improve the tuning accuracy of the vibroplate, which is the optimal mode of operation. This is achieved by the fact that the movable frame, the reactive and the resonator plates are made with closed compartments, equipped with rim units for supplying the ballast mass.

The drawing schematically shows the proposed vibroplatform, the general view and section along A-A.

A resonator plate 5 with an exciter 4 is suspended by means of elastic links 2 to one of the ends of the moving frame / vibrating plate. The frame is connected to elastic elements 5, which can have a different shape and tilt, and are fixed on the reactive plate 6. The frame oscillates with the system through the reactive plate rests on supporting elastic bonds 7 supporting it, whose stiffness value is insignificant and is chosen based on the requirements

maximum vibration pfedechi on the foundation of 8 vibroplatforms.

In the initial position, the vibroplatform is kept from limiting movements by the constraints 9.

The resonator plate is hollow (box section) and divided into separate isolated cavities 10 by partitions 11. At the top and bottom of the cavity, they are covered with sheets in which for each cavity there are fittings 13 for inlet and 14 for releasing ballast mass, for example valve nozzles. The movable frame and the reaction plate also have a box-like structure, the inner space of which is divided into compartments by means of partitions 11. In each compartment there are devices for inlet and outlet of the ballast mass.

The vibrating platform works as follows.

Form 15 with a concrete mixture is fed to the frame of the vibration plate and is attached to it with the help of mechanisms 16. When the vibration exciter 4 is turned on, the vibration and through elastic connections 2 is transferred to the frame and shape. With horizontal oscillations of the frame on the elastic elements 5, the vertical movement of the frame occurs. In this case, the disturbing force of the vibrator acts in the horizontal direction, the effect of which is enhanced by