BE1024973B1 - Drive arrangement for variable-speed drive of a equipped with two conditioning rollers conditioning a forage harvester - Google Patents

Abstract

A drive arrangement for the variable-speed drive of a conditioner device of a forage harvester (10) equipped with two conditioning rollers (28, 28 ') comprises a drivable input shaft (66), a first driveline between the input shaft (66) and a first conditioning roller (28) having a first Belt drive and a reverse rotation transmission (68), and a second drive train between the input shaft (66) and a second conditioning roller (28 ') comprising a second belt drive. The first belt drive and / or the second belt drive has a variable transmission ratio.

Description

(30) Priority information:

28/06/2016 DE 102016211570.7 (73) Owner:

DEERE & COMPANY IL 61265, MOLINE United States (72) Inventor:

BOHRER Stefan 66606 ST. WENDEL Germany (54) Drive arrangement for the variable-speed drive of a conditioning device of a forage harvester equipped with two conditioning rollers (57) A drive arrangement for the variable-speed drive of a conditioning device of a forage harvester (10) equipped with two conditioning rollers (28, 28j) comprises a drivable input shaft (66), a first one Drive train between the input shaft (66) and a first conditioning roller (28), which comprises a first belt drive and a reversing gear (68), and a second drive train between the input shaft (66) and a second conditioning roller (28j, which comprises a second belt drive The first belt drive and / or the second belt drive has a variable transmission ratio.

BELGIAN INVENTION PATENT

FÖD Wirtschaft, K.M.B., Mittelstand & publication number: 1024973 Energy filing number: BE2017 / 0057

Office of Intellectual Property Boarding. Classification: A01D 43/10

Date of issue: 05/09/2018

The Minister for Enterprise

Due to the Paris Treaty of March 20, 1883 for the protection of industrial property;

Introduced under the Act of March 28, 1984 on Inventive Patents, Article 22, for applications prior to September 22, 2014;

Based on Title I “Invention Patents” of Book XI of the Economic Code, Article XI.24, introduced for applications from September 22, 2014;

Based on the royal decree of December 2, 1986 on the registration, granting and maintenance of patents for invention, Article 28;

Based on the protocol, taken on 05/17/2017 at the Intellectual Property Office.

Considering that for patent applications that fall within the scope of Title 1, Book XI, of the Economic Code, in accordance with Article XI.19, Section 4, second paragraph, of the Economic Code, if the patent application is the subject of a search report in which a lack of unity of invention within the meaning of paragraph 1 is mentioned, and if the applicant does not limit his application and does not file a divisional application in accordance with the search report, the granted patent will be limited to the claims for which the search report was created.

DECIDES:

Article 1. - An invention patent is granted to:

DEERE & COMPANY, One John Deere Place, IL 61265 MOLINE United States;

represented by :

POWIS de TENBOSSCHE Roland, Boulevard General Wahis 15, 1030, BRUXELLES;

for a period of 20 years, subject to the payment of the annual patent fees mentioned in Article XI.48, §1 of the Economic Code, for: drive arrangement for variable-speed drive one with two

Conditioning device equipped conditioning device of a forage harvester.

INVENTOR:

BOHRER Stefan, Mühlenstr. 3 Niederlinxweiler, 66606, ST. Helix;

PRIORITIES) :

28/06/2016 DE 102016211570.7;

SEPARATION:

Partial application of the previous application: Date of filing of the previous application:

Article 2. - This patent is granted without any prior examination of the patentability of the invention, without guaranteeing the merit of the invention or the accuracy of its description, and at the own risk of the patent applicant (s).

Brussels, 05/09/2018, in special representation:

BE2017 / 0057

Drive arrangement for the variable-speed drive of a conditioning device of a forage harvester equipped with two conditioning rollers

description

The invention relates to a drive arrangement for the variable-speed drive of a conditioning device of a forage harvester equipped with two conditioning rollers.

Technological background

Forage harvesters are used to harvest whole plants or their parts, which are taken from a field in operation by means of a header, pressed together by pre-pressing rollers and fed to a knife drum, the chopping knives of which cut the plants together with a counter knife. The cut plants or parts are then optionally fed to a conditioning device and conveyed by a post-accelerator into an ejection manifold which loads them onto a transport vehicle. The harvested plants are usually used as animal feed or for biogas production.

The conditioning device usually comprises two or more mutually driven, cooperating rollers which are biased against each other by a spring force and between which the chopped material is passed. The conditioning device is used in the maize harvest to strike the grains contained in the chopped material and to improve the digestibility of the feed. The rollers of the conditioning device are usually provided with teeth or edges extending in the axial direction, so that a non-circular, profiled cross section of the rollers is obtained (see, for example, DE 83 02 421 U1).

In order to change the degree of impact on the crop in such essentially cylindrical conditioning rollers, the relative speed of both conditioning rollers is usually varied, for which purpose in the simplest case pulleys of the common drive train (see DE 10 2014 219 049 A1) derived from the drive of a post-accelerator both conditioning rollers can be exchanged for pulleys with a different diameter.

To change the speed during operation from the cab of the forage harvester

BE2017 / 0057 it was proposed to drive one of the conditioning rollers with a hydraulic motor (EP 1 156 712 A1), or to drive both conditioning rollers with a common belt drive and, in the case of a conditioning roller, to superimpose the mechanical drive with a second, variable-speed drive provided by a hydraulic motor can be used to adjust their speed (DE 10 2013 110 636 A1).

task

During the speed change of the conditioning rollers by changing the

Pulley relatively cumbersome and not possible during harvesting, it turns out that the driving power of the conditioning rollers can be a few 100 kW under unfavorable conditions. Such high performance cannot currently be achieved hydraulically with economically justifiable means.

The object on which the invention is based is seen in providing a drive arrangement for the variable-speed drive of a conditioning roller of a conditioning device of a forage harvester, which is characterized by low expenditure and high transferable powers.

invention

The present invention is defined by the claims.

A drive arrangement for the variable-speed drive of a conditioning device of a forage harvester equipped with two conditioning rollers comprises a drivable input shaft, a first drive train between the input shaft and a first conditioning roller, which comprises a first belt drive and a reversing gear, and a second drive train between the input shaft and a second conditioning roller , which comprises a second belt drive. The first belt drive and / or the second belt drive has a variable transmission ratio.

In other words, both conditioning rollers are purely mechanical

Drivetrain powered. A first conditioning roller, which is usually the lower or rear conditioning roller, is driven in the opposite direction to a driven input shaft, in that the direction of rotation is reversed by a direction-reversing gear and transmitted to the first conditioning roller via a first belt drive, or by the first belt drive to the direction reversing

Transmission is transmitted, which drives the first conditioning roller. A second conditioning roller, which is usually the upper or front conditioning roller, is driven in the same direction as the input via a second belt drive. The first or second belt drive (or both) has a variable transmission ratio in order to adjust the speed of the conditioning roller driven by it. In this way, the conditioning rollers continue to be driven mechanically, which enables problem-free transmission of high drive powers, which are required, for example, to remove blockages, but in a variable-speed manner.

The direction reversing gear can be a planetary gear with a sun gear, a planet gear carrier and a ring gear. The ring gear is connected to the input shaft, the planet gear carrier is held stationary and the sun gear is connected to the first belt drive.

In a preferred embodiment, the input shaft is connected to a belt pulley driving it, while the direction of rotation reversing the drive belt pulley is arranged adjacent to the input shaft and is coupled to the first belt drive by a hollow shaft surrounding the input shaft.

In another embodiment, the input shaft is connected to a pulley which drives it, while the direction of rotation reversing gear is connected to the end of the input shaft which is spaced from the pulley and is coupled to the first belt drive by a hollow shaft enclosing the input shaft.

In the two embodiments mentioned, the second belt drive can be connected to the input shaft at the end of the input shaft spaced apart from the belt pulley.

The first and / or second belt drive can to the variable

To realize gear ratio, be designed as a belt variator or so-called CVT, which uses a thrust link belt or a link chain instead of a belt, which is arranged between conical, variable-distance discs with radial recesses.

The drive arrangement is used on a forage harvester with a load-bearing chassis and a drive motor which is in drive connection with the input shaft of the drive arrangement described via a main belt drive. The input shaft can also drive a post-accelerator.

Embodiments

Two exemplary embodiments of the invention are explained on the basis of the figures. Show it:

1 is a schematic side view of a forage harvester,

2 shows a schematic top view of the drive system of the forage harvester,

Fig. 3 is a schematic view of a first embodiment of a

Drive arrangement for driving the conditioning rollers of the forage harvester from the front and above, and

Fig. 4 is a schematic view of a second embodiment of a

Drive arrangement for driving the conditioning rollers of the forage harvester from the front and from above.

1 shows a self-propelled forage harvester 10 in a schematic side view. The forage harvester 10 is built on a supporting chassis 12, which is supported by front driven wheels 14 and steerable rear wheels 16.

The forage harvester 10 is operated from a driver's cab 18, from which a harvesting attachment 20 in the form of a mowing attachment for the maize harvest, which is detachably attached to a feed housing 36, can be seen. By means of the crop header 20 cut crop, z. B. corn or the like, is fed to the front of the forage harvester 10 via a feed conveyor 36 arranged in the feed housing 36 with pre-pressing rollers 30, 32 of a chopping drum 22 which it chops into small pieces in cooperation with a shear bar 46 and a conditioning device with interacting conditioning rollers 28, 28 ', from which it reaches a conveyor device 24. The conditioning rollers 28, 28 'can be produced as cylindrical rollers which are toothed in the circumferential direction or can be designed in a wave shape in the axial direction. The material leaves the forage harvester 10 to a transport vehicle traveling alongside via an ejection elbow 26 which can be rotated about an approximately vertical axis and whose inclination is adjustable. The knives of the chopper drum 22 can be ground by a grinding device 42. In the following, indications of direction, such as laterally, below and above, relate to the forward movement direction V of the forage harvester 10, which runs to the left in FIG. 1.

BE2017 / 0057

FIG. 2 shows a top view of the drive system of the harvesting machine 10. In the rear area of the harvesting machine 10 there is an internal combustion engine 38, in particular in the form of a diesel engine. The internal combustion engine 38 extends in the forward direction of the harvesting machine 10 and comprises a crankshaft 40 which extends forwardly out of the housing of the internal combustion engine 38. In operation, the internal combustion engine 38 drives with its crankshaft 40 a first longitudinal shaft, which with the first Bevel gear 50 of an angular gear is connected. The second bevel gear 48 of the angular gear is connected to a transverse shaft 54 which is coupled to a belt pulley 56 of the main belt drive, which drives a belt pulley 60 and a belt pulley 62 via a belt 58. The pulley 62 drives the chopping drum 22, while the pulley 60 drives an input shaft 66, which in turn drives the post-accelerator 24 and (via a drive arrangement according to the invention) the conditioning rollers 28, 28 '. The pre-pressing rollers 30, 32 are driven by a gear 64 which can be driven hydraulically or mechanically.

The input shaft 66 drives the lower, rear conditioning roller 28 via a reversing gear 68 and a first drive belt 70, while the upper, front conditioning roller 28 'is driven by a second drive belt 72. The drive arrangement for driving the conditioning rollers 28, 28 'is shown in more detail in FIG. The direction of rotation reversing gear 68 is a planetary gear, the ring gear 73 is connected directly or via the input shaft 66 to the pulley 60. The planet gear carrier 76 is held stationary and the sun gear 74 is connected via a hollow shaft 78, through which the input shaft 66 extends, to the first belt drive, which comprises a pulley 80 for driving the first drive belt 70, which additionally extends around a pulley 82 loops, which is connected via a shaft 84 to the lower, rear conditioning roller 28. The post-accelerator 66 is rigidly connected to the input shaft 66 penetrating it. The upper, front conditioning roller 28 'is driven by the second belt drive, i.e. via a pulley 86 which is fastened to the end of the input shaft 66 spaced from the pulley 60, via the drive belt 72 and a pulley 88 which is connected to a shaft 90 for driving the upper, front conditioning roller 28 '.

The first belt drive with the pulleys 80 and 82 and the drive belt 70 and / or the second belt drive with the pulleys 86, 88 and the drive belt 72 is designed as a variator or CVT drive, which enables the transmission ratio and thus the speed of the to change the respective affected conditioning roller 28 or 28 'by means of an actuator (not shown). The desired speed or a speed ratio of both

BE2017 / 0057

Conditioning rollers 28, 28 'can be entered through an operator interface 98 and controlled via a controller 52. An automatic control would also be conceivable which optically recognizes the degree of comminution of the crop and, in particular, the proportion of grains which have been chipped or not chipped in the crop and which automatically specifies the speed, as described in EP 2 232 978 A1.

In the second embodiment according to FIG. 4, the gear 68 reversing the direction of rotation and the first belt drive are moved onto the side of the post-accelerator 24 that is spaced from the pulley 60. Otherwise, this embodiment corresponds to that according to the figure

3. It would also be conceivable to mount the second belt drive between the post-accelerator 24 and the first belt drive or to swap the positions of the first and second belt drives in the embodiment according to FIGS. 2 and 3. In these two cases, the hollow shaft 78 could be omitted and the planet gear carrier 76 could be connected directly to the pulley 80.

It remains to be noted that the conditioning rollers 28, 28 'are movable relative to one another, in particular against the force of a spring, as described for example in EP 2 098 110A1. In order not to have to continuously tension the belt drive of the moving conditioning roller 28, 28 * with an adjustable transmission drive in order to compensate for this movement with a third, freely rotating pulley, it is advantageous if the control 52 is programmed to move one or both of the conditioning rollers 28 , 28 'while maintaining a predetermined transmission ratio when checking the transmission ratio of the adjustable belt drive. If, for example, the conditioning roller 28, which is driven by an adjustable, first belt drive, moves downward, the control 52, based on the signal from a sensor detecting the position of the conditioning roller 28, would reduce the diameter of the two pulleys 80 and 82 interacting with the belt 70 in the same ratio, and vice versa when the conditioning roller 28 moves up. As a result, the belt 70 remains equally tensioned, although the pulley 82 has moved downward with the conditioning roller 28, but the transmission ratio of the first belt drive also remains the same. A third pulley for tensioning the belt 70 is not necessary. The procedure is analogous if the upper conditioning roller 28 'is movable and driven by the changeable, second belt drive.

The post-accelerator 24 and the input shaft 66 rotate in the illustrated embodiments in the same direction with the upper conditioning roller 28 'and the other conditioning roller 28 in the opposite direction, which is why the latter via the direction reversing

Gear 68 is driven. If the post-accelerator 24 does not work undershot, as shown, the reversing gear 68 and the first belt drive should be assigned to the upper conditioning roller 28 'and the second belt drive to the lower conditioning roller 28.

BE2017 / 0057

BE2017 / 0057

Claims (10)

Claims 1. A drive arrangement for the variable-speed drive of a conditioning device of a forage harvester (10) equipped with two conditioning rollers (28, 28j), comprising: a drivable input shaft (66), a first drive train between the input shaft (66) and a first conditioning roller (28) comprising a first belt drive and a reversing gear (68), and a second drive train between the input shaft (66) and a second Conditioning roller (28j, which comprises a second belt drive, the first belt drive and / or the second belt drive having a variable transmission ratio. 2. Drive arrangement according to claim 1, wherein the direction of rotation reversing gear (68) is inserted between the input shaft (66) and the first belt drive in the first drive train. 3. Drive arrangement according to claim 2, wherein the direction-reversing gear (68) comprises a planetary gear with a sun gear (74), a planet carrier (76) and a ring gear (73) and the ring gear (73) with the input shaft (66) connected Planetary gear carrier (76) held stationary and the sun gear (74) is connected to the first belt drive. 4. Drive arrangement according to claim 2 or 3, wherein the input shaft (66) is connected to a driving pulley (60), the rotational direction reversing gear (68) of the driving pulley (60) is arranged adjacent to the input shaft (66) and by a the hollow shaft (78) enclosing the input shaft (66) is coupled to the first belt drive. 5. Drive arrangement according to claim 2 or 3, wherein the input shaft (66) is connected to a driving pulley (60), the rotational direction reversing gear (68) at the end of the pulley (60) is connected to the end of the input shaft (66) and is coupled to the first belt drive by a hollow shaft (78) surrounding the input shaft (66). BE2017 / 0057 6. Drive arrangement according to claim 4 or 5, wherein the second belt drive is connected to the end of the input shaft (66) spaced from the pulley (60) 5 7. Drive arrangement according to one of claims 1 to 6, wherein the first and / or second Belt drive is designed as a variator or CVT. 8. Drive arrangement according to one of claims 1 to 7, wherein the conditioning rollers (28, 28 ″) are movable relative to one another, in particular against the force of a spring, 10 and a controller (52) can be operated to take into account the movement of a conditioning roller (28, 28 ') while maintaining a predetermined transmission ratio when checking the transmission ratio of the adjustable belt drive. 9. forage harvester (10) with a load-bearing chassis (12) and a drive motor (38), 15 which is connected via a main belt drive to the input shaft (66) of a drive arrangement according to one of the preceding claims. 10. forage harvester (10) according to claim 9, wherein the input shaft (66) additionally drives a post-accelerator (24). Oil· BE2017 / 0057