SU716816A1 - Vibrated platform for moulding tubular articles from concrete mortar - Google Patents

Description

The invention relates to the field of production of precast concrete and reinforced concrete. ,

Known vibration platform containing a movable frame, in the middle of one of the sides of which is installed the causative agent of circular vibrations [1]. ⁵

The closest known solution is a vibrating platform for forming predominantly tubular products from concrete mixtures, containing a movable frame mounted by means of elastic supports on the base, and a horizontal circular exciter mounted on adjacent side walls of the movable frame [2].

The disadvantages of these vibratory platforms is a high noise level, insufficient intensity of the compaction process and, as a consequence of the latter, low quality ι of molded products.

The aim of the present invention is to reduce noise, intensify the compaction process and improve product quality.

This goal is achieved by the fact that in the vibratory platform for molding mainly.

tubular products made of concrete mixtures containing a movable frame mounted by means of elastic supports on the base and a horizontal circular exciter mounted on adjacent side walls of the movable frame, the distance from the plane of action of the disturbing force to the mounting surface of the movable frame is 0.3-0.85 the distance from the center of gravity of the reduced mass of the mold with the concrete mixture to the same. surface, and the magnitude of the reduced mass of the mold with the concrete mixture is 0.35-0.75 the mass of the moving parts of the vibrating platform.

In FIG. 1 schematically shows a General view of the device; in FIG. 2 is a plan view of FIG. 1.

The vibrating platform for molding mainly tubular products from concrete mixtures consists of a movable frame 1 with vertical walls 2 and stiffeners 3 on elastic supports 4. On the vertical walls 2 there are guides 5 along which the vibration exciter 6 moves, which is fixed in the sockets 7, and the distance from the plane of action of the disturbing force of the pathogen 6 to the installation surface of the movable frame is 0.3-0.85 distance from the center of gravity of the reduced mass of the mold with concrete mixture to the same surface, and the magnitude of the reduced mass of the mold with the concrete mixture is 0.35-0.75 of the mass of the moving parts of the vibrating platform.

The electric motor 8 of the drive of the vibration exciter 6 is mounted on a motor frame 9 mounted on the base, and in the latter there are made sockets 10 for installing the motor 8 in the same horizontal plane with the vibration exciter 6.

For the passage of textured belts And connecting the engine 8 with the exciter 6 in the vertical wall 2, windows 12 are formed with a step equal to the pitch of the sockets 7 and 10 on the motor frame 9 and the vertical walls 2.

A vibrating platform for forming mainly tubular products from concrete mixtures works as follows.

Before turning on the engine 8, the mold 13 is mounted on the movable frame 1 and the vibrator 6 is moved vertically with the engine 8 and the vibrating plate is adjusted to the specified operating mode and the engine 8 is turned on and the concrete mix is continuously fed into the annular section of the mold 13, while it is simultaneously being compacted. After the compaction of the concrete mixture is completed, the vibration platform will be turned off

L.

smell, and the form 13 with the molded product is passed for further heat treatment and subsequent stripping.

Claims (2)

The vibration exciter 6 to the mounting surface of the movable frame is equal to 0.3-0.85 distances from the center of gravity of the reduced mass of the form with the concrete mix to the same surface, and the magnitude of the reduced mass. forms with a concrete mixture equal to 035-0.75 mass of moving parts of the vibrating plate. The drive motor 8 of the exciter oscillations 6 is mounted on the motor frame 9 mounted on the base, with the sockets 10 being installed in the latter to install the engine 8 in the same horizontal plane with the vibration exciter 6. To pass the textrop belts I connecting the engine 8 with the wheel exciter 15I 6 in the vertical wall 2 are formed in approx. 12 with a pitch equal to the pitch of the sockets 7 and 10 on the motor frame 9 and vertical walls 2. The vibratory plate works to form the concrete products of concrete mixes with special tools Zom. Before switching on the engine 8, the mold 13 is installed on the sub frame 1 and the vibration exciter 6 with the engine 8 is adjusted vertically. The vibrating plate is adjusted to the specified mode of operation and having turned on the engine: the concrete mix is continuously fed into the annular cross section of the mold 13, while its simultaneous compaction. After the compaction of the concrete mix is completed, the vibro-platform is switched off, and the mold 13 with the molded product is transferred for further heat treatment and subsequent stripping. Claims of the invention A vibrating plate for forming predominantly tubular concrete products, comprising a subframe mounted by means of elastic supports on the base, and a horizontal circular oscillator that is attached to adjacent side walls of the movable frame, characterized in that, in order to reduce the noise level, intensifying the compaction process and improving the quality of products, the distance from the plane of action of the disturbing force to the mounting surface of the subframe is 0.3-0.85 distances from the center of t tin reduced mass form the concrete mixture to the same surface, and vapichina reduced mass form the concrete mix is 0.75 mass vibroplatform moving parts. Sources of information taken into account in the examination 1. USSR author's certificate No. 510371, cl. B 28 B 1/08, 1976. 2. USSR author's certificate number 942642, cl. B 28 B 1/08, 1973.