The invention relates to a potato harvester with a lifting device having at least one digging device for lifting soil ridges containing potatoes, wherein the lifting device comprises one or several digging shares and is supported on the ground by at least one support element.
Potato harvesting machines of known configurations are usually provided with at least one lifting device for lifting the soil ridge with potatoes wherein the lifting device secured on the machine frame is supportable by at least one support element on the ground. According to DE 25 10 455 the machine frame is supported on wheels, and according to DE 32 00 924 A1 a drum that can be placed onto the soil ridge is provided in the area of the lifting device. The potato harvesting machines according to German utility model G 87 00 095.4 and DE 199 47 484 A1 have in the area of the digging share a ground-facing ridge roller or drum. In a single-row harvesting machine according to JP 07 107 828 A, the lifting device that is pivotably supported on the machine frame is provided with guide elements in the form of ridge drums attached with two guide rods, respectively, wherein their contact pressure on the ground can be increased by auxiliary weights provided above the ridge drums.
In a machine according to GB 2 095 085, in a single-row potato digger a depth sensing wheel is provided in the area of the leading edge of the lifting share. It provides depth control and, at the same time, is used for cutting off haulm. Generally, it is proposed also in the relevant literature to provide, in addition to sensing by means of ridge drums or similar components, a support wheel that is entrained without support load in the furrow for depth control of the digging share.
The invention has the object to provide a potato harvester whose lifting device is provided with a support that is optimal with regard to adjusting and digging processes of the share and, in this connection, enables with minimal technical expenditure an improvement of the digging performance.
The invention solves this object by means of a potato harvester having a support element that is comprised of at least two wheels that are movable along opposite sides of an intermediately positioned soil ridge.
In the area of the lifting device provided with at least one digging device, the potato harvester is provided with a support element that, according to the invention, is formed of at least two wheels that are movable along opposite sides of the intermediately positioned soil ridge and cooperate with one another as a functional unit.
In contrast to generally known ridge drums, sensing wheels or similar support elements provided for depth guiding of lifting devices, the guide unit according to the present invention provided with the two wheels is designed such that in the two furrows adjacent to the at least one soil ridge a support action is provided that takes up the weight force of the lifting device. With minimal expenditure, the wheels are also utilizable for depth adjustment or depth control of the digging share. The wheels that have a transverse spacing adjustable relative to the width of the soil ridge delimit in the digging phase the soil ridge so that for the conveying process a forced guiding action in the manner of an intake channel is provided. The laterally guided dug-up material is introduced in a stabilized mixed stream into the downstream separating stretch so that in this way the feed action of the lifted soil ridge with potatoes into the downstream devices of the machine is improved as a whole. In this connection, these wheels are combined support, guiding and control elements so that the lifting device is provided as a functionally improved module. In addition, the outer ones of the wheels can be provided with cutting elements so that haulm or other plant parts projecting into the lifting area can be cut off.
With a substantially variable design of the connecting component module between the wheels and a support frame of the lifting device, different drive and support configurations as well as corresponding height adjusting and transverse adjusting possibilities of the wheels are conceivable so that the construction as a whole provides a system that is variably adaptable to the digging conditions on site, respectively.
Preferably, the two wheels form a guide unit that supports at least one part of the weight of the digging device, that is provided for controlling the digging share, and that acts on the soil ridge to be lifted as an intake aid.
For a multi-row, preferably four-row, lifting device the number of wheels is greater by one than the number of the soil ridges to be lifted.
The wheels have a diameter selectable in accordance with the digging conditions. Preferably, the wheels have a diameter that is greater relative to the height of the soil ridge by a multiple, in particular is 2.5 times greater. For a multi-row lifting device the wheels have the same diameter, respectively.
Between the wheels forming a row transverse to the travel direction a variable support spacing is provided, in particular the support spacing is adjustable to the spacing of the soil ridges. The wheels can be arranged at different support spacing.
The wheels can be designed to be driven or powered.
The wheels are height-adjustable.
The wheels are adjustable transversely to the travel direction.
The wheels are supportable by transverse adjustment in a furrow provided between the soil ridges.
In the area of the wheels a measuring device is provided with which the lifting depth of the lifting device or of the digging share are controllable.
The lifting device or the digging device in the area of the wheels is provided with at least one sensing unit placeable onto one of the soil ridges.
The lifting device is provided with a linkage module connecting the lifting device to a machine frame, on the one hand, and supporting the wheels in the area of the digging share, on the other hand.
The wheels in the travel direction are supported so as to be rotatable on a transverse axle of the linkage module.
The linkage module that is essentially symmetrically configured relative to the longitudinal center plane of the machine is configured as a frame having two lateral guides and a leading crossbeam such that the lifting device is connected to the machine frame so as to be pivotable as a whole by means of lifting cylinders engaging the guides, respectively, and support bearings provided at a spacing to the lifting cylinders.
The transverse axle centrally supporting the wheels is supported on the linkage module by at least one pivot lever extending radially from the axle such that the transverse axle and the wheels are movable by at least one lifting member.
The transverse axle is connected at the ends in the area of a hinge, respectively, to the linkage module and the lifting members, provided as connectors and embodied in the form of two parallel lifting cylinders, cooperate with the respective pivot levers.
The wheels interact with a measuring device provided for automatic guiding of the lifting device along the soil ridges.
The measuring device has sensors located on the supporting parts of the wheels, respectively.
The measuring device has sensors for detecting lateral forces acting on at least one of the two pivot levers.
At least the outer ones of the wheels interact with a cutting member. As a cutting member a cutting element located on the wheels is provided. As a cutting element an annular disk can be provided that has a cutting edge. The annular disk is connected directly at the end face or centrally on the wheel.
The outer wheel and/or the cutting member are/is adjustable in the direction of the transverse axle and/or of the cutting depth.
Further details and advantageous configurations of the potato harvester according to the invention result from the following description and the drawings.
In
In accordance with the invention, the potato harvester 1 is provided with a lifting device 3 that comprises at least two wheels 8, 8′ that are movable along opposite sides 6, 7 of the intermediately positioned soil ridge 4; the wheels act in the way of multi-functional support elements.
In the configuration of the potato harvester 1 illustrated in
The two wheels 8, 8′ that cooperate with one another, respectively, thus form a guide unit E. The guide unit E supports at least one portion of the weight force A of the digging device 2 and is provided for controlling the digging shares 5. Moreover, the guide unit E acts on the soil ridge 4 to be lifted as an intake aid. In the illustrated embodiment comprising five wheels 8, the weight force A is distributed accordingly across several rows so that the surface pressure of each wheel 8 on the ground is reduced by the correlated distribution.
The construction of the guide unit E provides that between the wheels 8 (support axis Q) arranged in a row transversely to the travel direction F a variable support spacing B is provided that is, in particular, adjustable relative to the spacing of the soil ridges 4 (
The lifting device 3 has in the travel direction F of the machine 1 rotatable wheels 8 (arrow C) wherein the potato harvester 1 as a whole is moved by means of drive wheels (not illustrated) in the travel direction F. It is also conceivable to provide the wheels 8 with a separate drive unit, not illustrated, so that the actions of the wheels 8, 8′ as intake aids (in this connection: lateral pressing of the soil ridge 4 according to arrow S, S′ and intake action according to arrow P) can be actively assisted.
The digging share 5 located in the vicinity of the wheels 8 can be adjusted optimally by the guide unit E or a height-adjustable support of the wheels 8 to the height K of the soil ridge 4 and thus to the multi-row digging process (
In this way, the lifting device 3 can be actuated by means of drive elements embodied particularly as lifting cylinders 16, 17 and acting on the guides 13, 14. For a lifting movement according to arrow H (
The side view according to
When looking at
The plan view according to
The potato harvester 1 is configured for use in sloped terrain in such a way that the lifting device 3 is pivotable substantially independent of the driver's cabin, the collecting container or similar modules (not illustrated) in the direction according to arrow W′ (
In an advantageous embodiment, as a cutting member 28 a cutting element 29 (
In another embodiment of these wheels 8″ with cutting member 28 it is conceivable that the wheels 8″ directly and/or the correlated cutting member 28 are transversely adjustable (not illustrated) in the direction of the support beam 15 or the transverse axle 12 by a corresponding holder so that in accordance with the harvesting conditions an optimal adjustment of the lifting device 3 is possible.
The constructively variable holding means 32 for the lifting share 5 in the area of the digging device 2 or the lifting device 3 is designed to modify the area of the harvester facing the ground below the separating stretch T. With this novel mixture conveying embodiment, the risk of collection of soil on individual parts of the harvester as well as a disadvantageous interruption of the harvesting process are to be prevented.
Advantageously, the holding means referenced in general by reference numeral 32 is designed in accordance with
When looking at both
The plan view according to
As a result of the construction with the holding means 32 securing the lifting shares 5, the free space 33 is substantially free of the transverse supports or similar parts (
The specification incorporates by reference the entire disclosure of Germany priority document 10 2006 033 974.8 having a filing date of Jul. 22, 2006.
While specific embodiments of the invention have been shown and described in detail to illustrate the inventive principles, it will be understood that the invention may be embodied otherwise without departing from such principles.
Number | Date | Country | Kind |
---|---|---|---|
10 2006 033 974 | Jul 2006 | DE | national |
This application is a continuation-in-part application of U.S. patent application Ser. No. 11/779,932 having a filing date of 19 Jul. 2007, the disclosure of which is incorporated by reference in its entirety into the instant application.
Number | Name | Date | Kind |
---|---|---|---|
151778 | Hewitt | Jun 1874 | A |
408208 | Burger | Aug 1889 | A |
498885 | Mercer | Jun 1893 | A |
587725 | Gibbons | Aug 1897 | A |
969690 | Headland | Sep 1910 | A |
1293144 | McKinley | Feb 1919 | A |
1761286 | Zuckerman | Jun 1930 | A |
2110997 | Mayfield | Mar 1938 | A |
2417580 | Young | Mar 1947 | A |
2488983 | Packman | Nov 1949 | A |
2519761 | Hobbs | Aug 1950 | A |
2532169 | Jones | Nov 1950 | A |
2537198 | Wetzel et al. | Jan 1951 | A |
2693068 | Rodin | Nov 1954 | A |
3065800 | Faust et al. | Nov 1962 | A |
3106249 | Zachery | Oct 1963 | A |
3196599 | Meiners et al. | Jul 1965 | A |
3628609 | Graybill | Dec 1971 | A |
3743023 | Bedwell | Jul 1973 | A |
3756322 | Kopasz | Sep 1973 | A |
3995570 | van der Lely | Dec 1976 | A |
4121667 | Curl | Oct 1978 | A |
4142585 | Bohner et al. | Mar 1979 | A |
4416334 | Bouillon | Nov 1983 | A |
4796711 | Chrysler | Jan 1989 | A |
4821807 | Trumm | Apr 1989 | A |
4842076 | Welp | Jun 1989 | A |
5077963 | Harrison et al. | Jan 1992 | A |
5085279 | Kvistgaard | Feb 1992 | A |
5181572 | Andersen et al. | Jan 1993 | A |
5203148 | Schreiner et al. | Apr 1993 | A |
5248090 | Williamson | Sep 1993 | A |
5392863 | Fixemer | Feb 1995 | A |
5655467 | Yasuda et al. | Aug 1997 | A |
6079192 | Rasmussen | Jun 2000 | A |
Number | Date | Country |
---|---|---|
25 10 455 | Sep 1976 | DE |
32 00 924 | Jul 1983 | DE |
87 00 095.4 | Apr 1987 | DE |
199 47 484 | Apr 2001 | DE |
2095085 | Sep 1982 | GB |
7107828 | Apr 1995 | JP |
Number | Date | Country | |
---|---|---|---|
20080099214 A1 | May 2008 | US |
Number | Date | Country | |
---|---|---|---|
Parent | 11779932 | Jul 2007 | US |
Child | 11968287 | US |