WO2021004706A1

WO2021004706A1 - Band- or belt-like conveyor element

Info

Publication number: WO2021004706A1
Application number: PCT/EP2020/065586
Authority: WO
Inventors: Thorsten - c/o Continental AG Schwefe; Jan-Henning - c/o Continental AG Quass
Original assignee: Contitech Antriebssysteme Gmbh
Priority date: 2019-07-09
Filing date: 2020-06-05
Publication date: 2021-01-14
Also published as: DE102019210060A1

Abstract

The invention relates to a band- or belt-like conveyor element (1, 10) made of an elastomer material for conveying elongated rod-, stick-, or stock-shaped cut goods or goods to be conveyed (11), which are aligned substantially transversely to the longitudinal axis of the conveyor element, over a conveyor path (30). The conveyor element has a drive side (2) and a conveyor side or rear side (3) lying opposite the drive side, wherein mutually spaced carriers (4, 40) are provided on the conveyor side or rear side (3) of the conveyor element (1, 10), and the width of the conveyor element, the height protruding from the rear side, and the width of the carriers are dimensioned such that the goods to be conveyed are transported in a conveyor direction (9) oriented substantially in the direction of the longitudinal axis of the conveyor element. The invention is characterized in that the carriers (4, 40) are produced as separate elements and are connected to the conveyor side or rear side (3) of the conveyor element (1, 10) via a bonded connection, preferably by a welded connection.

Description

description

Belt-like or belt-like conveying element

The invention relates to a belt-like or belt-like conveyor element made of elastomeric material for conveying elongated, rod-shaped, stick-shaped or stem-shaped, im

Cut or conveyed material oriented essentially transversely to the longitudinal axis of the conveying element over a conveying path, the conveying element having a drive side and a conveying or back side opposite the latter, with carriers being provided on the conveying or back side of the conveying element and the width of the conveying element as well which are dimensioned in relation to the height protruding from the back and the width of the carriers so that the conveyed goods are transported in a conveying direction essentially oriented in the direction of the longitudinal axis of the conveying element, i.e. mainly transversely to the longitudinal axis of the conveyed goods.

The conveyance of elongated, rod-shaped, stick-shaped or stalk-shaped material to be conveyed is required, for example, in the area of conveying cuttings and is usually particularly difficult if elongated or rod-shaped cuttings / material cannot be transported or conveyed in any position, but is to be transported aligned in a defined position over the conveyor line.

One is confronted with such a problem in a special way, for example, in harvesting machines for stalk-like or stalky crops, for example in combine harvesters. Such harvesting machines for use in the field usually have link chains with drivers that grip, separate and transport the crop. Such

Link chains require relatively intensive maintenance and lubrication, are relatively heavy because they are made of metal and can occasionally be problematic with regard to noise emissions. DE 20 2015 005 648 Ul clarifies the use of link chains and discloses a mowing and conveying device for harvesting stalky crops, namely a forage harvester in which the crops are transported with conveyor elements designed in this way parallel to a cutting device and transversely to the direction of travel of the forage harvester . Even if the harvested crop is conveyed here without any problems by several conveyor elements / link chains running in parallel, it would still be desirable to achieve a weight saving and a reduction in maintenance intervals.

On the other hand, there are the known conveyor belts, e.g. made of rubber materials, as typical conveyor elements, which are suitable for all kinds of conveyed goods, but have so far rarely been used as a substitute for the usual link chains in the agricultural sector. Rather, such conveyor belts are more suitable for bulk goods. The above-mentioned stalk-like or stalk-like crop can thus be transported in randomly oriented bulk, with the corresponding losses due to material falling off the belt, but not oriented in a defined position.

It is also known to use flexible conveying elements when processing crops or clippings. For example, US Pat. No. 3,854,272 discloses a belt conveyor device for cut grain, provided with endless belts, in which two belts or belts running in parallel over a conveyor section convey the grain stalks. For this purpose, the belts have cams on their sides facing one another, which each engage in the spaces between the cams of the opposite belt and thus transport the cut grain in the direction of the belt. The belts are provided with tooth profiles on their drive side opposite the cams and are over

corresponding toothed disks driven. The belt conveyor device disclosed there is intended for use on combine harvesters and is used there to collect the

Cuttings / clippings opposite to the direction of travel in the other

Processing facilities of the combine harvester. Belts profiled in this way, however, require appropriately designed forms or form wheels for their production, with their help vulcanization of the entire profile can be carried out. This makes production relatively complex.

For the invention, the object was to provide a belt-like or belt-like conveyor element which is easy to manufacture and with which a rod, stick or

stem-shaped conveyed goods can be aligned in a defined position and safely transported over a conveyor line. Another object of the invention was to provide a substitute for the metallic link chains that are often required in agricultural applications, which is a particularly in the case of stalk-like clippings

Separation of the cuttings or a separation into partial quantities allows and that reduces noise emissions, weight and maintenance intervals. Furthermore, the task consisted in avoiding excessive soil compaction by reducing the weight of agricultural vehicles.

This problem is solved by the features of the main claim. Further advantageous designs are disclosed in the subclaims. Also disclosed are a conveying device with a conveying element according to the invention and a combine harvester with a corresponding conveying device.

The drivers are produced as separate elements and connected to the conveying or rear side of the conveying element by a material connection,

preferably by a welded connection. In particular when the drivers connected to the conveying element are made of elastomeric material, preferably of the same material as the conveying element, a conveying element can be produced in a very simple manner, which is best adapted to its intended use. No expensive molding tools are required and standard parts resulting from a conventional production can be connected to one another in order to construct the conveyor element according to the invention. In this way, the distance between the

Drivers are formed from one another in the longitudinal direction of the conveying element so that the conveyed goods are picked up between the drivers individually or in essentially the same numbers or quantities. Such a design according to the invention achieves reliable singulation or separation of the stalk-like cut material in partial quantities. Noise emissions from a large number of moving parts on the link chains are significantly reduced. In addition, there is a lower weight compared to the previous solutions and the

Maintenance intervals are significantly reduced.

The conveying element is advantageously designed as a tension belt made of elastomeric material, preferably made of rubber, which is provided with tension or strength members running inside the tension belt in its longitudinal direction. With such a design, the manufacturing processes and the entire technology in the manufacture of conventional pulling or drive belts can be used to provide such conveyor elements according to the invention. One draws on a long-standing experience here and supplements this with the aid of the solution according to the invention to a new product, in that carriers attached to the rear allow a previously impossible use and allow use not only as a belt drive, but also as a conveyor element.

Of course, the conveying element can be designed both as piece goods, which can be cut and welded in any way, and as a ready-to-use, finished endless belt. That depends more or less on what you are using

Manufacturing process. In the production of tension belts, both endless manufacturing processes and drum manufacturing processes are known and proven.

An advantageous further development consists in the fact that the drive side is provided with a profile, in particular with a toothing, which is designed to engage in deflection rollers or correspondingly configured with a complementary outer profile

Drive pulleys is formed. Such a design enables particularly high drive forces to be transmitted and prevents slippage and the associated undesirable heating of the conveyor element when it slides, e.g. on or off

Drive pulleys. The drive side and individual areas of the conveying or rear side can also be provided with a coating or fabric layer. In this way, the properties with regard to wear, friction, etc. of the conveying element or of the tension belt adapted for conveying can be precisely adapted to the respective application. For example, on the toothed drive side, a fabric layer made of a certain material can considerably reduce the friction at the tooth engagement and thus the heat input.

A further advantageous embodiment is that the width of the drivers corresponds to the belt or belt width, so that the drivers run essentially across the entire width of the conveyor element, with their from the back

projecting height is preferably greater than or equal to its width. This achieves a sufficient distribution of force on the stalk-like structure of the conveyed material and avoids jammed stalks, which ultimately clog the whole

Could lead conveyor.

A particularly good delivery rate can be achieved with another advantageous one

Training that consists in the fact that the driver to the longitudinal extent of the

Conveying element are designed inclined, preferably inclined in the conveying direction so that the front sides of the drivers pointing in the conveying direction form an angle at most 75 ° to the surface of the rear side of the conveying element. This creates a kind of shovel effect, which ensures good delivery rates.

A further advantageous embodiment consists in the fact that the drivers are arranged on the rear side in relation to the conveying direction through in the longitudinal direction of the conveyor element

Support elements or support plates are supported, preferably triangular or

trapezoidal support elements. These support elements prevent the elbow from bending or the drivers from folding over with large delivery rates. In particular, the fact that the support elements are only materially or positively connected to the driver and are only supported on the back side of the conveyor element, a further significant advantage can be achieved, which is that even relatively small radii in the Deflection or drive rollers do not lead to undesired tension in the connection points between support elements, belts and drivers. In the event of a deflection, ie when the conveyor element revolves around a drive roller or

Deflection roller, the support element can then namely something from the back of the

Lift off the conveyor element. A harmful build-up of tension due to the deflection or bending radius on the rollers is thus avoided.

Another advantageous embodiment is that the driver by a

Friction welds are connected to the conveying or back side of the conveying element. Such a friction weld is very easy to carry out, especially when both parts to be welded are made of the same or a compatible material. Various processes of friction welding or friction joining or hybrid joining are conceivable here, for example circular welding, linear welding, infrared friction welding etc. Alternatively, thermal joint welding is of course also possible.

A conveying element can be used particularly advantageously on a conveying device of a harvesting machine if at least two are along a conveying path

Conveying elements according to the invention are provided and the conveying elements are arranged in pairs so that their respective conveying or rear sides face each other along the conveying path and the drivers engage in the spaces between the drivers of the opposite conveyor element and thus transport the cut grain in the conveying direction. This enables the stalk-like cuttings to be transported safely and with a "grip". The spaces between the drivers are reduced by the mutual engagement and the conveyed goods are securely held.

An advantageous further development of such a conveying device, in the sense of improving the guidance and transport safety, consists in that the height of the drivers protruding from the rear side of the conveying element is between 30 and 80 mm the width of the drivers corresponds to the belt or belt width.

In this sense, such a conveying device can advantageously be used in particular in a combine harvester, the conveying device being designed essentially with a conveying direction oriented opposite to the direction of travel of the combine harvester and the conveying element for processing stalk-like crop or cut material from a forward position in the direction of travel transported within the vehicle. For example, several such conveyor devices can be distributed within the width of the cutting mouth of a combine harvester and convey the clippings backwards into the processing area.

The invention is to be explained in more detail using an exemplary embodiment. Show it

La a conveyor element according to the invention in a side view,

Fig. Lb a comparable conveyor element according to the invention with inclined

Carriers,

Fig. 1c two conveyor elements according to the invention arranged in pairs in a conveyor device of a combine harvester,

Fig. 2 shows a combine harvester with arranged on its front side

Conveyor devices according to Fig. Lc from the side,

FIG. 3 shows a combine harvester according to FIG. 2 from one to another

Details shown cutting and conveying device. Fig. La shows in the form of a schematic sketch of a conveyor element 1 according to the invention in a side view with its drive side 2 and the opposite conveyor or back side 3. On the conveyor or back side 3 spaced carriers 4 are provided. On the drive side 2, the conveying element 1 is provided with a toothing 5, which is correspondingly provided with a complementary external profile deflection rollers 6 and drive pulleys 7 formed and looped around by the conveying element 1.

The conveyor element 1 according to the invention is designed as an endless pulling belt made of polyurethane with tensile or strength members running within the pulling belt in its longitudinal direction, but which are not shown in detail here.

The drivers 4 are supported on the rear side in relation to the conveying direction 9 by support elements 8 arranged in the longitudinal direction of the conveying element, here they are trapezoidal. The support elements are only connected in a material or form-fitting manner to the driver, namely on its surface on the rear surface in the conveying direction 9. On the back side 3 of the conveyor element 1, the support elements 8 are merely supported. As a result, when the conveyor element 1 revolves around the rollers 6 and 7, there are no inadmissible tensions in the connecting areas of the driver to the

Conveyor element. This is because the support elements can lift off the back side 3 of the conveying element 1 on their underside as they rotate.

Fig. Lb shows a comparable conveyor element 10 according to the invention, but this time provided with drivers 40 that are inclined to the longitudinal extension of the conveyor element 10, namely in this embodiment so that the front sides of the drivers 40 pointing in the conveying direction at an angle of 75 ° to the surface of the

Form the back of the conveyor element.

The width of the conveyor elements 1 and 10 and the height measured from the back side 3 and the width of the drivers 4 and 40 are in the

Embodiments of Fig. La and lb dimensioned so that the conveyed 11 in

Is transported essentially transversely to its longitudinal axis in the direction of the longitudinal axis of the conveyor element 1 over the conveyor line. The spacing of the drivers from one another in the longitudinal direction of the conveying element is designed such that the straw-like or stalk-like conveyed item 11 is received between the drivers individually or in essentially the same numbers or quantities. Fig. 1c shows two conveyor elements 1 arranged in pairs in a conveyor device of a combine harvester, which are provided along a conveyor line 30, the conveyor elements being arranged in such a way that their respective conveying or rear sides 3 face one another along the conveying path and the drivers in the respective existing between the drivers 4 of the opposite conveyor element

Intervene gaps and thus transport the conveyed material 11 or cut material or crop in the conveying direction 9.

Fig. 2 shows this - only in principle - such a combine harvester 12 for harvesting elongated, rod, stick or stalk-shaped conveyed material 11 (crop), which is provided with a cutting and conveying device 18 arranged on its front side, in which the conveying devices are included. The combine harvester also has a driver's and operating cab 14 and a housing box 15 for driving and machine processing of the conveyed material.

Fig. 3 shows the combine harvester 12 from the front, with which the cut or crop in

Near the floor from separating cutting and conveying device 18. The cutting and

Conveyor device 18 covers a cutting width 17 provided transversely to the direction of movement or travel of the combine harvester and has in its lower region several conveyor devices 13 provided between or in cutting heads 16 in which conveyor elements 1 are arranged in pairs according to FIG is formed opposite to the direction of travel of the combine. The conveyed material 11 is thus conveyed into the cutting and conveying device 18 and then transported by this into the housing box 15 for machine processing.

In the illustration of FIG. 3, for the sake of simplicity, only one of the conveying devices 13 is sketched and only shown in principle in an enlarged section A. Usually between two protruding cutting heads 16

Conveyors 13 are provided. List of reference symbols

(Part of the description)

1 conveyor element

2 Drive side of the conveyor element

3 Back of the conveyor element

4 carriers

5 teeth

6 pulley

7 drive pulley

8 support element

9 Direction of conveyance

10 conveyor element

11 conveyed goods

12 combines

13 Conveyor equipment

14 Driver and control cabin

15 Machine and drive housing

16 cutting head

17 Cutting width, cutting area

18 Cutting and Conveying Device

30 conveyor line

40 carriers

Claims

1. Belt or belt-like conveyor element (1, 10) made of elastomeric material for

Conveying elongated, rod-shaped, stick-shaped or stalk-shaped cut or conveyed goods (11) aligned essentially transversely to the longitudinal axis of the conveying element via a conveying path (30), the conveying element having a drive side (2) and a conveying or back side opposite the latter (3), wherein on the conveying or back side (3) of the conveying element (1, 10) spaced apart drivers (4, 40) are provided and the width of the conveying element and the height protruding from the back side and the Width of the drivers are dimensioned so that the conveyed material is transported in a conveying direction (9) essentially oriented in the direction of the longitudinal axis of the conveyor element, characterized in that the drivers (4, 40) are produced as separate elements and by a material connection with the conveyor - or

Back side (3) of the conveyor element (1, 10) are connected, preferably by a welded connection.

2. Conveying element according to claim 1, wherein the carriers connected to the conveying element consist of elastomeric material, preferably of the same material as the conveying element.

3. Conveyor element according to claim 1 or 2, in which the distance between the drivers (4, 40) from one another in the longitudinal direction of the conveyor element (1, 10) is designed so that the conveyed goods are received between the drivers individually or in substantially the same numbers or quantities becomes.

4. Conveying element according to one of claims 1 to 3, designed as preferably

Endless pull strap made of elastomeric material, which is provided with tensile or strength members running inside the pull strap in its longitudinal direction.

5. Conveyor element according to one of claims 1 to 4, in which the drive side (2) is provided with a profile, in particular with a toothing (5), which for engagement in deflection rollers (6) or drive pulleys (7), which are designed with a complementary outer profile ) is trained.

6. Conveyor element according to one of claims 1 to 5, wherein the width of the driver (4, 40) corresponds to the belt or belt width, so that the driver in the

Run essentially across the entire width of the conveyor element (1), their height protruding from the back side preferably being greater than or equal to their width.

7. Conveyor element according to one of claims 1 to 6, wherein the drivers (40) are inclined to the longitudinal extension of the conveyor element, preferably inclined in the conveying direction so that the front sides of the drivers pointing in the conveying direction (9) are at an angle of at most 75 ° to the surface the back of the

Form conveying element (1).

8. Conveying element according to one of claims 1 to 7, in which the drivers are supported on the rear side in relation to the conveying direction by support elements (8) arranged in the longitudinal direction of the conveying element, preferably triangular or trapezoidal

Support elements.

9. Conveying element according to claim 8, wherein the support elements (8) only with the

Drivers are connected in a material or form-fitting manner and are merely supported on the back of the conveyor element.

10. Conveying element according to one of claims 1 to 9, in which the drivers (4, 40) are connected to the conveying or rear side (3) of the conveying element (1) by a friction weld.

11. Conveyor device on a harvesting machine, characterized in that at least two conveyor elements (1, 10) according to claim 1 to 10 are provided along a conveyor path (21, 22), the conveyor elements being arranged in pairs so that their respective conveying or rear sides (3) face each other along the conveying path and the drivers (4, 40) engage in the spaces between the drivers of the opposite conveyor element.

12. Conveyor according to claim 11, wherein the from the back side of the

Conveyor element protruding height of the driver is between 30 and 80 mm and the width of the driver corresponds to the belt or belt width.

13. Combine with a conveyor according to claim 11 or 12, wherein the

The conveying device is essentially designed with a conveying direction (9) oriented opposite to the direction of travel of the combine harvester, and the conveying element receives stalk-like crops or clippings from a front lying in the direction of travel

Cutter moved rearward for processing inside the vehicle.