DE29608628U1 - Bar belt for bar belt conveyors - Google Patents

Description

jag2496s.wps

Gummi-Jäger KG GmbH & Cie in 30625 Hanover

Rod belt for rod belt conveyor

The invention relates to a bar belt for bar belt conveyors, in particular a sieve bar belt for agricultural machines, wherein the bars arranged at a distance from one another transversely to the running direction of the conveyor are firmly connected at their ends to circulating, tensile, flexible belts, e.g. by rivets, and are kept at a distance between the belts by two belts arranged one above the other, which also extend in the running direction of the conveyor and enclose the bars between them, and which are connected to one another between adjacent bars.

In the known bar bands of this type, the bands between the bars are locally connected to one another by rivets or screws. Apart from the fact that such connecting elements require a considerable amount of effort in the manufacture of the bar bands, the connecting elements that only act locally lead to premature damage to the aforementioned bands.

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The invention is based on the object of eliminating these disadvantages and thus simplifying the manufacture and increasing the service life of the bar belt conveyors.

To achieve this object, according to the invention, the bands between adjacent rods are connected over the surface by gluing, welding or vulcanizing. Preferably, the bands consist of a thermoplastic material at least in an outer layer in order to be able to bring about the band connection by welding. Bands made of PVC are particularly suitable here, and preferably those bands that also have a reinforcing insert.

Further details of the invention are explained with reference to the drawing, in which an embodiment of the invention is shown.

Show it ;

Fig. 1 is a plan view of a longitudinal section of a sieve bar belt for an agricultural machine,

Fig. 2 is a section along the line II - II of Fig. 1 and
Fig. 3 is a section along the line III - III of Fig. 1.

The rod belt moves in the direction of arrow 1; it is guided on rollers and has two, if necessary, additional, endlessly rotating, tensile, rubberized fabric

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existing belts 2 on both of its edges. The belts 2 are used to attach bars 3 made of steel or similar that run parallel to the belts 2. Their mutual distance determines the degree of sieving required. The bars 3 have flattened ends -4 for resting on the belts 2. The ends 4 are attached using two rivets 5.

The rivets 5 penetrate the ends 4, the straps 2 and a metal plate 9. The holes in the ends 4 are marked 10, the holes in the straps 2 are marked 11. The rivet heads are also countersunk, as shown at 12.

If the distance between the belts 2 or the bars 3 is comparatively large, it is advisable, particularly in rough conditions, to ensure that the bars 3 are kept at a distance from one another in order to be able to maintain the screening dimensions. To do this, two matching belts 13, 14 are used, the width of which is considerably smaller than that of the belts 2. These belts are made of a thermoplastic material, e.g. PVC, and are reinforced with reinforcing inserts, e.g. fabric inserts. The belts 13, 14 enclose the bars 3 between them, but the belt 14 is stretched or practically straight, while the upper belt 13 encloses the individual bars 3 and is led down to the belt 14 behind or in front of the bars 3. Between the bars 3, the two bands 13, 14 lie flat on top of each other and are firmly connected to each other by welding across the contact surface.

Such welding can be carried out by heating during production without any problems. It is

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Furthermore, it is also very durable. In the area of the rods 3, the bands 13, 14 should be wrapped in such a way that a certain amount of play is still present, which is an advantage at the deflection points of the rod band.

According to Fig. 3, the contact surface 15 between the two belts 13, 14 (with the bar belt stretched) runs tangentially to the bars 3. This also results in a good entrainment effect for the conveyed material in the area of the belts 13, 14. If necessary, it is also possible to set the contact surface 15 at half the height of the bars 3 or so that the upper belt 13, which is located in the effective area of the bar belt, runs stretched.

In order to prevent the two bands 13, 14 from slipping on the rods 3, hoses can be pulled onto the rods 3 to serve as spacers between the belt 2 and the two bands 13, 14. Such a hose is indicated at 16. It should be arranged alternately or opposite one another.

Claims (5)

·: ·: : ...s ·,.::·*. jag2496s.wps Claims 1. Bar belt for bar belt conveyors, in particular sieve bar belts for agricultural machines, whereby the bars arranged at a distance from one another transversely to the running direction of the conveyor are firmly connected at their ends to circumferential, tensile, flexible belts, e.g. by rivets, and between the belts are kept at a distance by two belts arranged one above the other, which also extend in the running direction of the conveyor and enclose the bars between them, which are connected to one another between adjacent bars, characterized in that the belts (13, 14) are connected flatly by gluing, welding or vulcanizing together. 2. Treadmill according to claim 1, characterized in that the belts (13, 14) consist of a thermoplastic material at least on the sides facing each other. 3. Treadmill according to claim 1, characterized in that the belt (14) facing away from the active side (top side) of the treadmill runs in a stretched manner and the other belt (13) is guided around the bars (3) to the belt (14) located below. 4. Treadmill according to claim 2, characterized in that the belts (13, 14) have a reinforcing insert. JAG2496S.WPS 5. Treadmill according to claim 1, characterized in that hoses or sleeves are pushed onto the rods (3), which serve as spacers between the belts (13, 14) on the one hand and the adjacent belt (2).