DE671982C - Vibrating screen - Google Patents

Description

Vibrating screen The invention relates to the special storage of vibrating sieves and in particular aims to provide these sieves with a tension-equalizing effect Give storage. Vibrating screens are already known that are perpendicular to the vibration se: hene mounted spring bars are supported, these bars having a non-circular cross-section own. However, the known spring bars are rigidly clamped at their ends; this does not take into account the fact that the spring bars vibrate with the sieve make a not unimportant rash and thereby a constant elongation and shortening of the feathers occurs. As a result: arise in the spring bars a lot strong forces that lead to the heating and the premature destruction of these supporting parts to lead.

There are also handlebars for vibrating screens known, their bearing eyes are lined with rubber bushes. These elastic sleeves are only used for Shock absorption, lengthening or shortening of the handlebars cannot be achieved by these bushings be balanced.

According to the invention, the disadvantage is avoided in that the Ends of the springs are embedded in rubber blocks. By storage in the elastic The suspension springs can now use rubber without the shape changes at their clamping points yield additional forces, so that both the bending moments at the clamping points and, above all, the longitudinal forces described above are avoided. try have shown that the evils described at the beginning are in fact replaced by the new Facility to be eliminated.

The drawing shows an embodiment of the invention again, and although in use with a sieve that works with a countermass.

Fig. I shows the sieve in front view, while Fig. A and 3 show sections along lines A-A and B-B.

Fig.q. shows a mounting of the spring bars on the sieve frame in View, while Figure 5 shows a plan view of the spring on an enlarged scale.

The screen box is a, by four spring sets, each consisting of two Blattfedernid and to the plane of vibration of the screen perpendicular to the Siebg; suspended swingably rue St c, while the counterweights b, springs, hanging e, the in .One to the main plane of symmetry of the rocking device lie parallel plane. The ends of the springing and @e are mounted on the sieve frame c, while the oscillating mass, ie the sieve box or the G.egengewiölf .: attack in their middle.

The springs d are embedded at their ends with rubber blocks i, y, of Surrounded by a piece of pipe iz and lie in bearings / which are attached to the sieve frame c are. In the middle of the sieve box a bearing bracket lt is fastened with the screws rn and also provided there a piece of food z. Again, the bar springs are in Rubber pieces i, ji embedded, which in turn are surrounded by a piece of pipe h.

This design makes it possible to use the bar springs at the same time after loosening the screws 1, nz to turn and thus the throwing angle of the sieve in -Easiest way to adjust. The screws mentioned then become a matter of course tightened again.

The sieve box can be driven by a slider crank mechanism, that with '.: @ äc3; he without loose coupling between sieve boxes., itnd counterweight switched is. However, as shown schematically in Fig. I, it can also be a camshaft be present, which is stored in the sieve box and whose cams on handlebars or Attack roles associated with the counterweight.

Claims (1)

PATENT CLAIM: Vibrating screen which rests on bar springs of rectangular cross-section arranged perpendicular to the vibrating plane, characterized in that the ends of the springs (d) are embedded in rubber blocks (i, j?).