JPS592545B2 - Drives of vibrating machines, especially vibrating screens with circular non-uniform excited vibration movements - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a vibrator with a circular non-uniform excited vibration motion, having an exciter body supported on both sides in the side walls of a vibrating machine and coupled to each other by a joint shaft. It relates to machines, in particular to drive devices for vibrating screens.

In West German Publication No. 2426843, a circular
A drive for a vibrating sieve with non-uniform excited vibration movements is shown, in which the drive shaft of the sieve is one and drivingly connected to one and the same motor. The vibration points of the exciter fixed to the shaft are shifted from screen to screen so as to eliminate static moments. By this measure, a reduction in the starting power is very advantageously achieved, since only the vibration moments, and not the additional static moments, have to be overcome by the drive motor, especially during acceleration. This is because it is nothing more than In this way a large number of vibrating screens can be started and operated simultaneously by a single drive. Starting from the known drives for vibrating screens, the object of the invention is to provide a drive for vibrating machines in general, so that vibrating machines can always be adapted in a simple manner to independent loads and process-technical requirements. The purpose is to form the system so that it can be done.

This object is achieved in that the exciter body is formed in two parts and arranged in a mutually adjustable manner. By adjusting the exciter, which is supported on both sides in the side walls of the vibrating machine, the vibration amplitude can be varied very advantageously, so that the vibrating machine can be adjusted correctly to the respective load and process-technical requirements. can be adapted. The drive power and charging efficiency of the vibrating machine are not affected in this way. Details, features and advantages of the invention are given in the following description of an embodiment diagrammatically illustrated in the drawing.

The vibrating screen shown in FIG. 1 consists of a frame 1 supported via a spring member 2 to a fixedly arranged base frame 3. A sieve 6 is stretched between side walls 4 and 5 of the sieve frame 1. On the side walls 4 and 5 of the sieve frame, asymmetrical exciters T and 8 or 9 and 10, each of the same size for both sieves, are supported. The asymmetric exciter bodies are mutually coupled to the joint shaft 11. At this time, the Cartan joint 12 is used as a connecting element.
and 13 are provided. Spaced outwardly from the vibrating screen is a drive motor 14 which likewise has corresponding shafts 15, 16 and Cartan joints IT and 18.
It is connected to the shafts 11, 19 and 20 by. axis 15
and 16 are interconnected by a bayonet connection 16' which allows the shafts 15 and 16 to have a very advantageously limited movement in the longitudinal direction. Advantageous cylindrical roller bearings 21 are provided for supporting the asymmetric exciter bodies 7, 8, 9 and 10, the cylindrical roller bearings being closed off from the outside in a dust-tight manner by a bearing housing 22. There is. As shown in FIG. 2, the asymmetric exciter bodies 7 and 8 according to the invention consist of two parts and are arranged mutually adjustable. The unbalanced exciter 7 is the bearing shaft 1
9, while the asymmetric exciter 8 is disposed on an axis so as to be rotatable in the circumferential direction. Openings 23 or 24 are provided in the base body of the asymmetric exciter body 7 and in the asymmetric exciter body 8, which can be mounted with the same size and in correspondence with each other. Screws or pins are passed through the openings 23 and 24 for fixing or coupling the asymmetric exciters 7 and 8.
Furthermore, a slit-like recess 25 is provided in the asymmetrical excitation body 8 for fixing or mutually fixing both the asymmetrical excitation bodies. This allows a stepless adjustment of the exciter body 8 relative to the exciter body 7. The formation and adjustable arrangement of the asymmetric exciter bodies 7 and 8 shown in FIG. 2 obviously also apply in a similar manner to the other asymmetric exciter bodies 9 and 10. The inhomogeneous exciter bodies 7, 8, 9 and 10 can be made of the same size in a self-evident manner, or the excitation forces starting from the inhomogeneous bodies can be correctly applied to the side walls 4, 5.
dimensioned and axially arranged in such a way that it is subsequently introduced into the side wall in the direction of and transmitted to the vibrating screen. The inventive two-part design and mutually adjustable arrangement of the inhomogeneous exciter body is very advantageous in that the vibration amplitude can be varied as required, i.e. the build-up can be reduced, so that the vibration The sieves are adapted precisely to the respective load and process-technical requirements.

If the vibrating screen is to be operated with maximum vibration amplitude, it is possible in a simple way to replace the unbalanced exciter 8 or 9 with the unbalanced exciter 7 or 1.
This is achieved by being correctly brought to the same position as 0. A minimum vibration amplitude is achieved if the asymmetric exciter 8 or 9 is brought to the position indicated by the dotted line in FIG. In this way, the charging efficiency of the vibrating screen can be optimally adapted to the respective requirements. In addition to vibrating screens, the vibrating drive device formed according to the invention can also be used with great advantage in other vibrating machines, in particular vibrating conveyors.

[Brief explanation of the drawing]

FIG. 1 shows a cross-sectional view of a vibrating screen with an exciter body in two parts supported on the side wall and arranged mutually adjustable; FIG. 2 a vibrating screen in two parts and mutually adjustable FIG. 4 shows an enlarged front view of a possible arranged exciter;

Claims (1)

[Claims] 1 Vibrating machines, in particular drives of vibrating screens with a circular non-uniform excited vibration movement and having an excitation body supported on both sides in the side walls of the vibrating machine and connected to each other by joint shafts. The driving device as described above, wherein the exciting body is composed of two parts, and the relative position between the two parts is arranged so as to be adjustable.