DE2356542A1 - Vibration generating drive for ore dressing machine - produces elliptical vibration without gears or rubber springs - Google Patents

Abstract

The sieve housing of an ore dressing machine has a sieve mounted on springs on a base and delivers the ore in the upward direction. Two out-of-balance masses rotate at the same speed but in opposite directions and the directions of the out-of-balance of each mass is so arranged that they generate vibration along a line perpendicular to the line joining the centres of rotation of the masses. A third out-of-balance mass generates a circular vibration which when combined with the linear vibration due to the first masses, produces an elliptical vibration of the sieve.

Description

DIPL ING. C. STOEPEL · DIFL ING. W. 3OLLWITZER DIPL.ING. F. W. MOLL

674LANDAUZPFAtZ-AMSCaUTZI ³ INKOF

IEl _n 08341 / 8000,6033 TEIEX 4S8888 POSTSCHECK: 67 IUDWIOSHAFEN 87562 -BANK: DEUTSCHE BANK 674 I ₁ ANDATf-PFAlZ

November 12, 1973

IBAG Vertrieb GmbH, Neustadt a.d. Wine Route

"Vibration-generating drive for processing machines"

The invention relates to a vibration-generating drive for processing machines such as sieves and the like, which are to be set in elliptical vibrations.

Such processing machines with vibration generating Drive are known in many embodiments. It must essentially be between machines with linear vibrations, A distinction is made between ice vibrations and elliptical vibrations. The generation of linear or circular oscillations can be disregarded here, since it is only about the generation of elliptical ones Vibrations.

To generate such elliptical oscillations are including circular oscillation machines with superimposed pitching oscillation, including the balancing mass drive from the Center of mass is offset. In this design, the elliptical oscillations are only at the ends

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of the sieve, the ellipse with its longitudinal axis on the feed side in the conveying direction and on the outlet side is directed against the conveying direction. As a result, the conveying speed and thus also the sieving unfavorably influenced, so that screening machines of this type have only limited application possibilities.

Another machine with elliptical vibrations provides a mass coupling through guides, which is a Significant constructive effort means. In addition, these machines have to have a particularly heavy frame be equipped. Furthermore, machines with drives for generating elliptical vibrations with three- or multiple balancing drives known, which by forced synchronization in a form-fitting connection to each other stand, whereby the elliptical vibrations are achieved by superimposing the excitation forces. Through the Use of gears, clutches and the like. These are Drives are very complex and also correspondingly expensive.

There are also machines with resonance drives for generation from. elliptical vibrations known as resonance sieves with mass ma ssenanttrieb and pseudoharinonic Vibrations work. They are designed as two- or multi-mass systems, with only part of the mass as work flows is exploited, which makes these machines very heavy. In addition, these machines are complicated by the use of rubber buffers as working springs and silent blocks as guide elements and prone to failure.

The invention is based on the object of a vibration-generating Drive for processing machines with

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to create elliptical vibrations, which is initially simple and therefore inexpensive to manufacture, which, for example, does not have gears or similar positively locking devices Must have connections, but also do without rubber buffers as working springs, as well as silentblocs and the like can. Above all, that should be achieved both a circular oscillator and a linear oscillator can be easily converted into an elliptical oscillator. Furthermore, the amplitude should be in a simple manner and the direction of oscillation of the elliptical oscillations can be changed.

The invention solves the problem posed by a vibration generator Drive for processing machines with elliptical vibrations by having a drive at least one drive for generating circular vibrations is assigned to generate linear vibrations, both drives do not have a positive connection, but are self-synchronizing.

It is therefore sufficient for a machine with a drive to Generation of line vibrations an additional drive to generate circular vibrations or with one Machine with a drive for generating circular vibrations to arrange an additional drive for generating linear vibrations without any other changes. In order to can use both a circular oscillator and a linear oscillator in a simple manner without changing the design of the gruride can be used in an elliptical oscillator. Additional Expensive elements such as gear drives, heavy foundation frames, guide elements, spring assemblies, silentblocs * or the like are not necessary.

6 0 9 8 2 Q / 0 2 4 1

The shape and the longitudinal axis of the ellipse oscillations depends on the oscillation amplitude and the S _c hwingrichtung of the linear vibrator, the position of the associated circuit vibrator and the ratio of the oscillating mass of the sieve box and the unbalanced mass of the oscillator circuit from. The shape and direction of the elliptical oscillations can thus be adapted to individual requirements by means of simple measures.

Should all points of the effective part of the machine, e.g. the sieve box of a sieving machine, be in the same form and oscillate elliptically in the same direction, care must simply be taken that the resultant of all forces runs through the center of gravity of the sieve box or at least in its immediate vicinity and the sum of the moments of all forces in the center of gravity or in its immediate vicinity is zero.

Once the machine has started and is in the Working state is, the circular vibration exciter can without its own energy absorption through the established self-psychronization run with the linear vibration drive, with all the energy required by the linear vibration drive takes over.

If the linear vibrations are generated by two counter-rotating circular vibration exciters, they can be in the working state without its own energy absorption through the established self-psychronization with the assigned circular vibration exciter run, whereby this takes over the full energy expenditure.

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Further features of the invention and that through the same he Targeted advantages emerge from the following description of the assignments shown purely schematically and by way of example in the accompanying drawings Drives;

Fig. 1 shows one way in

Fig. 2 is another possibility and in

3 shows a further possibility of assignment

of linear and circular oscillation drives shown,

Fig. 4 shows individual phases of the mutual drive position and the generated thereby Elliptical oscillation.

A sieve box 1 of a sieve machine with a sieve bottom 2 in a known manner by means of springs 3 on one Foundation 4 supported. The conveying direction in Figures 1 to 3 is indicated by an arrow 5.

In Figure 1, the screening machine is with one as a unit trained linear vibration exciter, which consists of the counter-rotating circular vibration exciters 6 and 7, equipped. Starting from this linear oscillator, it is sufficient to assign an additional circular oscillation exciter 8, to transform the linear oscillator into an elliptical oscillator in a simple manner. In the working state arises the elliptical motion 9.

Another way of assigning the drives is shown

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Fig. 2 with a linear vibration exciter, which consists of the opposing Circular vibration exciters 6 »and 7» consists and again a circular vibration exciter 8..

Another possibility is finally shown in FIG. 3 with the linear vibration exciter 6 ¹ , 7 'and the associated circular vibration exciter 8 *.

Fig. 4 shows in its individual partial images different phases of the respective angular position of the individual drives and the respective corresponding point of the path of the elliptical oscillation of the machine with an arrangement of the drives according to Fig.

The direction of rotation of the circular vibration exciter is indicated with arrows.

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Claims (2)

P at e η ta η s ρ r Ü c h e 1.) Vibration-generating drive for processing Machines with ellipsoidal vibrations, characterized in that a drive for generating linear vibrations has at least one drive for generating circular vibrations is assigned, with both drives without interlocking Connection are self-synchronizing. 2.) Vibration-generating drive according to claim 1, characterized in that the drives each point of the Working frame impressing the same elliptical oscillation Have arrangement. 50982Q / Q2A1. -S. Blank page