GB2205292A

GB2205292A - Rods for use with separating arrangements on harvesting machines

Info

Publication number: GB2205292A
Application number: GB08808581A
Authority: GB
Inventors: Friedrich Rohrs
Original assignee: Jaeger Gummi GmbH and Co KG
Current assignee: Jaeger Gummi GmbH and Co KG
Priority date: 1987-04-14
Filing date: 1988-04-12
Publication date: 1988-12-07
Anticipated expiration: 2008-04-12
Also published as: FR2613901B1; FR2613901A1; NL8800576A; GB8808581D0; BE1001052A5; GB2205292B; DE8705498U1

Abstract

Rods for use with separating arrangements especially for separating belts serving as circulatory belts, on harvesting machines preferably potato harvesters, having resilient fingers 4 which are adhesively applied by vulcanisation to a core rod 1, are characterised in that the core rod has a longitudinal bore, of non-circular section and serves to accommodate a carrier e.g. a flat plate having a corresponding cross-section. The core rod is preferably rectangular in section but may be C-shaped with the gap in the face opposite the fingers 4. <IMAGE>

Description

RODS FOR USE WITH SEPARATINGARRANGEMENTS ON HARVESTING MACHINES The invention relates to rods for use with separating arrangements especially for separating belts, on harvesting machines preferably on potato harvesters, having resilient fingers which are situated on a core rod, the core rod having a longitudinal bore formed therein.

These rods are used for the above-mentioned harvesters in screening and separating arrangements, but especially in conjunction with a screening belt system. The rods mainly serve to separate the potatoes or the like from fine weeds, clods and soil. It is self-evident that the resilient fingers can become damaged when used for this purpose. In consequence, rods have to be replaceable and .easy to assemble.

In addition, the manufacturers of the separating arrangements want to be able to use rods which are versatile in use, inter alia, for arrangements of varying width.

The rod according to the invention seeks to meet these requirements.

To achieve this object according to the invention, the cross-section of the longitudinal bore in the rods is noncircular, so a square cross-section is advantageously used, or, however, a rectangular cross-section is. preferably used.

In particular, a tube of rectangular cross-section is used.

These rods may be produced in long lengths and may be vulcanised for the application of the rubber. Rods of a predetermined length may then be cut, so that they can be provided with the securing holes. The remaining pieces may be loaded onto a suitable carrier which has a cross-section corresponding to the non-circular cross-section of the hole in the core rod. Consequently, the remaining pieces are also utilised advantageously, and they cannot twist round because of the above-mentioned form-locking arrangement.

As a result, the rods can be manufactured more economically since only one vulcanisation mould is required for the many d varies uses of the rods.

The present invention will be further illustrated, by way of example, with reference to the accompanying drawings, in which: Fig. 1 is a partial, side elevational view of a knubbed rod for separating arrangements on a potato harvester; and Fig. 2 is a cross-sectional view of the knubbed rod of Fig. 1.

The core rod 1 is a square steel tube having a flat rectangular cross-section. A rubber layer 3 is adhesively applied by vulcanisation to its upper, longer outer surface 2 and extends, as one piece, along two rows of finger-like knubs 4 which are substantially twice as long as the height of the core rod.

Accordingly, the cavity 5 of the core rod 1 is rectangular, In consequence, any desired lengths or even portions, however, of the knubbed rod can be loaded onto a flat iron plate which is not shown and should preferably be given such a crosssection that rattling movements are eliminated after the loading process and during operation of the separating arrangement.

It is also possible for the core rod to be given a C-shaped cross-section; it is then also possible to raise the core rod with a certain initial tension. The gap in the profile then lies opposite the rubber layer 3.

The rods according to the invention can be vulcanised in long lengths and then be obtained in desired lengths by cutting.

Claims

1. Rods for use with separating arrangements,especially for separating belts serving as circulatory belts, on harvesting machines preferably potato harvesters, having resilient fingers which are adhesively applied by vulcanisation to a core rod, the core rod having a longitudinal bore, wherein the longitudinal bore is non-circular and serves to accommodate a carrier having a corresponding cross-section.

2. Rods as claimed in claim 1, wherein the core rod is a square tube.

3. Rods as claimed in claim 2, wherein the square tube has a rectangular cross-section and carries the fingers on a longer side face.

4. Rods as claimed in claim 3, wherein the fingers extend into an integral rubber cover layer which merely covers the longer side face.

5. Rods as claimed in claim 3, wherein the core rod serves to accommodate a flat iron plate which forms the carrier.

6. Rods as claimed in claim 1, wherein the core rod has a substantially C-shaped cross-section.

7. Rods as claimed in claim 6, wherein the slot in the core rod is situated opposite the fingers.

8. Rods for use with separating arrangements, substantially as hereinbefore described with reference to the accompanying drawings.