WO2002087314A2 - Einrichtung zur verstellung der sieböffnungsweite an mähdreschern - Google Patents
Einrichtung zur verstellung der sieböffnungsweite an mähdreschern Download PDFInfo
- Publication number
- WO2002087314A2 WO2002087314A2 PCT/IB2002/002907 IB0202907W WO02087314A2 WO 2002087314 A2 WO2002087314 A2 WO 2002087314A2 IB 0202907 W IB0202907 W IB 0202907W WO 02087314 A2 WO02087314 A2 WO 02087314A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- sieve
- adjusting
- box
- screen
- driver
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
Classifications
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01F—PROCESSING OF HARVESTED PRODUCE; HAY OR STRAW PRESSES; DEVICES FOR STORING AGRICULTURAL OR HORTICULTURAL PRODUCE
- A01F12/00—Parts or details of threshing apparatus
- A01F12/44—Grain cleaners; Grain separators
- A01F12/446—Sieving means
- A01F12/448—Sieve adjusting means
Definitions
- the invention relates to a device for adjusting the screen opening width on combine harvesters with the features according to the preamble of patent claim 1.
- the upper sieve and the lower sieve consist of two sieve sections arranged side by side, both of which have their own device of this type, which are also fastened to the rear end of the sieve frame and can be actuated by approaching the combine harvester from behind at the operator's hand.
- a disadvantage of the devices constructed in this way and arranged as described for adjusting the screen opening width is that this increases the production costs for the combine harvester because each screen or even each screen section is equipped with a separate device. It is also to be criticized that after the removal of a sieve for the purpose of cleaning or when replacing a sieve after installing the cleaned or exchanged sieve, the previous size of the sieve opening must first be readjusted, which is associated with an increased expenditure of time. When using this device on a pre-sieve it is further aggravated that on the one hand the accessibility is poor and on the other hand the set sieve opening width cannot be checked precisely.
- DE-OS 1 952 808 Another embodiment variant of a device for adjusting the screen opening width has become known from DE-OS 1 952 808. This is attached to a sieve which is surrounded by a sieve frame, the width of which is divided into three equal sieve sections by means of longitudinal ribs. In each the sieve section contains the same number of lamellae, the horizontally oriented lamella wires of which are rotatably mounted in the left and right side supports of the sieve frame and in the longitudinal ribs. To adjust the sieve opening width of the lamellae, each lamellar wire has an offset which is supported in a common longitudinal adjustment rail for each sieve section.
- a tubular cross shaft which extends over the entire width of the sieve, is rotatably mounted in the rear cross member of the sieve frame and has flat shoulders directed downwards in the central region of each sieve section.
- a connecting rod is articulated at one end, and the other end is hooked into the longitudinal adjustment rails.
- the cross shaft has on one side a form-fitting insert in the form of a square bore into which a shaft with the shape of a square, which is firmly connected with an adjusting lever, is inserted.
- This adjusting lever interacts with a locking segment attached to the sieve box, which runs in a circular arc around the longitudinal axis of the transverse shaft and is equipped with several locking bores into which a locking bolt attached to the adjusting lever can optionally engage.
- This device for adjusting the sieve opening width is also disadvantageous in that it represents a cost-increasing factor because each sieve is equipped with a separate device. The lack of reproducibility of a previously set size of the sieve opening width after cleaning or when changing the sieve should also be criticized. Finally, such a device is not recommended for use on a so-called pre-screen due to poor accessibility and the limited possibility of checking the set screen opening width.
- the invention has for its object to provide a device for adjusting the sieve opening width on combine harvesters, which is inexpensive to manufacture, in which after the sieves have been removed for the purpose of cleaning or for changing the sieve, the reinstallation of the sieve with little expenditure of time the same size of the screen opening width as possible before and which is easily accessible even when used on a pre-screen.
- the position of the cross shaft under the sieve in connection with its upward-oriented driver, which is connected to the adjustment rail of the sieve via a positive connection that can only be released by an upward movement of the sieve, is the prerequisite for the fact that the function of the displacement movement of the adjustment rail in is secured approximately horizontal direction and on the other hand the screen itself can be removed from this connection in a short time by an upward movement and another or the same screen can be reinserted at this point after cleaning.
- the device for adjusting the sieve opening width can be used according to the features of subclaim 2 in an expedient manner on all sieves of a combine harvester, regardless of whether it is a pre-sieve, a top sieve or a bottom sieve.
- This adjustment mechanism offers itself according to the features of sub-claim 5 particularly for use on a pre-screen, because then the adjusting lever can also be arranged at the rear end of the screen box only by using a long connecting rod.
- the design of the adjustment mechanism it is pointed out at this point that the use of other adjustment mechanisms is also within the scope of this invention. This could be, for example, electrical or hydraulic drives that drive the cross shaft directly or indirectly.
- the transverse shaft in the flow direction of the threshing material to be cleaned, if possible, under the rear end of the sieve in question, in order to keep the adjustment mechanism very short.
- the attachment of the driver on the cross shaft in the immediate vicinity next to the bearing plate according to the features of subclaim 7 stresses the cross shaft least on bending, so that this diameter can be kept relatively small in this preferred embodiment.
- the bearing plate offers the driver protection against mechanical damage.
- the positive engagement between the cross shaft and the adjustment rail of the screen which can only be released by an upward movement of the screen, is solved here in a proven manner by the upward-facing end of the driver attached to the cross shaft engaging in a downwardly open recess of the adjustment rail.
- a recommended option for releasably fastening the screen in the screen box is, according to the features in subclaim 9, to simply clamp the front cross member of the screen frame with two steel springs and screw the rear cross member to the bottom of the screen box with two screws.
- the upper part of the bearing plate which is designed as a rectangle, is connected to a notch of the same shape in the longitudinal rib of the sieve, which gives the sieve additional security for a secure hold in the sieve box.
- a simple hand lever for actuating the adjustment rail is attached to the longitudinal rib of the sieve according to the features of subclaim 11.
- the front cross member is simply pushed under the steel springs and the recess of the adjustment rail is pressed onto the driver from above by lowering the sieve. If there is no match, this can be achieved by operating the hand lever. Since the position of the adjustment lever on the adjustment mechanism was not changed, the same sieve opening width as before was reached. Then the rear cross member of the sieve frame is screwed to the sieve box with two screws.
- the locking lever is equipped with a detent which engages in locking grooves of a plate which is rotatably and positionally fixed to the screen box. This plate is rotated until it is fastened to the sieve box until the lamellae of the sieves are closed when the latching lever of the latching lever is seated in its top-most latching groove.
- Fig. 1 a schematic side view of a threshing and cleaning device in a combine harvester
- Fig. 2 an enlarged and shortened side view of the
- FIG. 1 shows a schematic side view of a combine harvester which is equipped with an axial threshing and separating device 1 which separates the threshed material into its constituent parts of grain, straw and chaff.
- the straw is deposited as a swath on the field with the discharge drum 2 arranged at its rear end.
- the mixture of grain and chaff separated by the axial threshing and separating device 1 falls on the one hand directly onto the preparation floor 3 and on the other hand partly onto the Direction of the threshed material to be cleaned related to the front part of the sieves 4 of the cleaning device 5, from which it is conveyed further by the oscillating movements of the sieves 4 over the entire cleaning device 5.
- the preparation floor 3 of this combine also has a second stage 6, which is located under the pre-sieve 7, in front of the top sieve 8 and partly above the bottom sieve 9 of the cleaning device 5.
- the cleaning device 5 also includes a blower 10, which acts on the sieves 4 and the second stage 6 of the preparation base 3 with an air flow from below.
- the above-mentioned oscillating movements are carried out by the pre-screen 7, the second stage 6 of the preparation base 3 and the top screen 8, since they are accommodated together in a common vibrating screen box 11.
- the lower sieve 9 performs oscillating movements in opposite directions. So that an optimal degree of cleaning of the cleaning device 5 is achieved, the speed of the fan 10 and the opening width of the fins 12 of the screens 4 can be changed. How the latter is solved according to the invention is explained in more detail with reference to FIGS. 2 to 6 using the pre-screen 7 as an example.
- this pre-sieve 7 corresponds to all the other sieves 4 because it has a sieve frame 13 which consists of a left and a right side support 14 as well as a front cross member 15 and a rear cross member 16 extending between them. At least in the median longitudinal plane of the screen box 11 and also of the pre-screen 7, a longitudinal rib 17 is welded between the front cross member 15 and the rear cross member 16, which in this case divides the pre-screen 7 into two screen sections. In the left and right side supports 14 of the screen frame 13 and in the longitudinal rib 17, the lamellae 12 of the pre-screen 7 are connected in a rotationally fixed manner. which lamellar wires 18 rotatably mounted.
- the pre-sieve 7 is easily detachably mounted in the sieve box 11 in that its front cross member 15 is clamped by at least two steel springs 21 and its rear cross member 16 is fastened to the bottom 23 thereof with at least two screws 22.
- the adjustment rail 20 is connected to a transverse shaft 24 arranged directly under the rear end of the pre-sieve 7, which at one end in the region of the longitudinal center plane of the sieve box 11 in a bearing plate 25 fastened to the bottom 23 of the sieve box 11 and at the other end in Area of the right longitudinal spar 26 of the screen box 11 seen in the direction of travel of the combine is rotatably mounted.
- adjusting mechanism 27 which in turn consists of a swivel lever 28 connected to the transverse shaft 24 and rotatable about its axis of rotation, to which one end of a long connecting rod 29 extending in the direction of the longitudinal bar 26 is articulated connected.
- the last part of the adjusting mechanism 27 is an adjusting lever 30 according to FIG. 5, which is articulated to the rear end of the connecting rod 29. It is provided with a locking lever 31, the detent 32 engages in locking grooves 33 of a plate which is rotatably and positionally attached to the sieve box 11. Several locking grooves 33 in the plate serve for the optional setting of intermediate sizes and end positions of the sieve opening width of the slats.
- a spring arranged between the locking lever 31 and the fulcrum of the adjusting lever 30 ensures that the detent 32 remains securely in the selected locking groove 33 and the position of the slats 12 thus remains.
- the cross shaft 24 and its adjustment mechanism 27 can best be seen in FIG. 3, the lamellae 12 of the top wire 8 being omitted from the drawing for the sake of simplicity.
- the connection between the cross shaft 24 and the adjusting rail 20 is realized according to FIG. 4 via an upwardly oriented driver 34 connected in a rotationally fixed manner to the cross shaft 24, which is located in the immediate vicinity next to the bearing plate 25 and with its upper end 35 in an open downward Recess 36 of the adjustment rail 20 of the pre-screen 7 engages.
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Environmental Sciences (AREA)
- Threshing Machine Elements (AREA)
- Paper (AREA)
- Harvester Elements (AREA)
- Combines (AREA)
Abstract
Description
Claims
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP02749171A EP1408733B1 (de) | 2001-04-27 | 2002-04-13 | Einrichtung zur verstellung der sieböffnungsweite an mähdreschern |
| DE50210770T DE50210770D1 (de) | 2001-04-27 | 2002-04-13 | Einrichtung zur verstellung der sieböffnungsweite an mähdreschern |
| US10/475,642 US6953397B2 (en) | 2001-04-27 | 2002-04-13 | Device for adjusting the width of a sieve opening on combine harvesters |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10120957A DE10120957C2 (de) | 2001-04-27 | 2001-04-27 | Vorrichtung zur Verstellung der Sieböffnungsweite an Mähdreschern |
| DE10120957.6 | 2001-04-27 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| WO2002087314A2 true WO2002087314A2 (de) | 2002-11-07 |
| WO2002087314A3 WO2002087314A3 (de) | 2003-01-09 |
Family
ID=7683120
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/IB2002/002907 Ceased WO2002087314A2 (de) | 2001-04-27 | 2002-04-13 | Einrichtung zur verstellung der sieböffnungsweite an mähdreschern |
Country Status (5)
| Country | Link |
|---|---|
| US (2) | US6953397B2 (de) |
| EP (1) | EP1408733B1 (de) |
| AT (1) | ATE370646T1 (de) |
| DE (2) | DE10120957C2 (de) |
| WO (1) | WO2002087314A2 (de) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7029392B2 (en) | 2001-04-27 | 2006-04-18 | Cnh America Llc | Device for adjusting the width of a sieve mesh on combine harvesters |
| US10064336B2 (en) | 2015-07-23 | 2018-09-04 | Cnh Industrial America Llc | Sieve arrangements for a cleaning system in an agricultural harvester |
Families Citing this family (20)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102005026608A1 (de) | 2005-06-09 | 2007-01-04 | Deere & Company, Moline | Reinigungseinrichtung für einen Mähdrescher |
| US7371162B2 (en) * | 2006-04-24 | 2008-05-13 | Cnh America Llc | Sieve adjustment mechanism for an agricultural combine |
| US7497775B1 (en) | 2007-08-28 | 2009-03-03 | Cnh America Llc | Rear accessible sieve retainer |
| US8622792B1 (en) * | 2012-11-26 | 2014-01-07 | Cnh America Llc | Rack and pinion sieve adjustment mechanism |
| CN103125203B (zh) * | 2013-03-11 | 2015-04-08 | 四川伊俊农业机械制造有限公司 | 油菜、稻麦联合收割机 |
| US9258945B2 (en) * | 2013-09-20 | 2016-02-16 | Deere & Company | Hanger mount for a reciprocating sieve |
| US9226450B2 (en) * | 2013-09-20 | 2016-01-05 | Deere & Company | Lightweight hybrid material reciprocating sieve |
| US9198359B2 (en) * | 2013-09-20 | 2015-12-01 | Deere & Company | Frame for a reciprocating sieve |
| CN103688684B (zh) * | 2013-12-16 | 2017-01-11 | 江苏大学 | 一种联合收获机清选筛筛片开度的调节装置及调节方法 |
| US9844186B2 (en) * | 2015-09-29 | 2017-12-19 | Deere & Company | Drive linkage for cleaning shoe |
| US10238040B2 (en) * | 2017-04-06 | 2019-03-26 | Deere & Company | Harvester louver rotation |
| US10856469B2 (en) * | 2017-08-22 | 2020-12-08 | Hcc, Inc. | High strength sieve |
| US10959380B2 (en) | 2019-03-12 | 2021-03-30 | Cnh Industrial America Llc | Sieve for an agricultural harvester with adjustable louvers and associated adjustment assembly |
| BR102019020537B1 (pt) * | 2019-09-30 | 2020-09-08 | Gerhard Dowich | Escama para peneira de grãos, peneira ajustável para grãos e método de ajuste de escamas para peneira de grãos |
| USD1031793S1 (en) | 2022-08-30 | 2024-06-18 | Calmer Holding Company, Llc | Separating grate |
| USD1031792S1 (en) * | 2022-08-30 | 2024-06-18 | Calmer Holding Company, Llc | Round bar concave |
| USD1032666S1 (en) | 2022-08-30 | 2024-06-25 | Calmer Holding Company, Llc | MOG limiting subassembly for combine concave |
| US11877538B1 (en) | 2022-08-30 | 2024-01-23 | Calmer Holding Company, Llc | Threshing grains and legumes utilizing concaves with adjustable openings |
| USD1031791S1 (en) * | 2022-08-30 | 2024-06-18 | Calmer Holding Company, Llc | Straight bar concave |
| USD1058613S1 (en) | 2022-11-29 | 2025-01-21 | Calmer Holding Company, Llc | Limiter plates |
Family Cites Families (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3021009A (en) * | 1959-11-16 | 1962-02-13 | Joe L Scott | Automatic grain separator control |
| US3334744A (en) * | 1965-09-22 | 1967-08-08 | Int Harvester Co | Sieve construction and the like |
| US3472377A (en) * | 1968-01-22 | 1969-10-14 | Case Co J I | Sieve for combine |
| DE1952808A1 (de) * | 1969-10-21 | 1971-05-13 | Deere & Co | Verstellvorrichtung fuer Lamellensiebe,insbesondere von Maehdreschern |
| DE2355792A1 (de) * | 1973-11-08 | 1975-05-22 | Sperry Rand Corp | Dreschkorb-verstellvorrichtung fuer maehdrescher |
| US4502493A (en) * | 1983-12-12 | 1985-03-05 | Hart-Carter Company | Infinite adjustment means for sieve and chaffer slats |
| US4712568A (en) * | 1986-03-10 | 1987-12-15 | New Holland Inc. | Combine sieve adjustment mechanism |
| US4770190A (en) * | 1987-05-15 | 1988-09-13 | Deere & Company | Cleaning shoe screen for an agricultural combine having readily replaceable louvers |
| EP0291582B1 (de) * | 1987-05-19 | 1991-12-11 | Ford New Holland N.V. | Reinigungsvorrichtung eines Mähdreschers |
| US4897072A (en) * | 1988-06-17 | 1990-01-30 | Harlan Bestland | Apparatus for adjusting the sieve of a combine harvester |
| EP0629340B1 (de) * | 1993-06-14 | 1999-04-28 | New Holland Belgium N.V. | Anzeigevorrichtung für den eingestellten Lamellenwinkel in einer Erntemaschine |
| US5462174A (en) | 1994-04-22 | 1995-10-31 | Hcc Inc. | Sieve apparatus for combine |
| US5525108A (en) * | 1994-08-02 | 1996-06-11 | Case Corporation | Cleaning system for an agricultural combine |
| US6053812A (en) * | 1997-11-24 | 2000-04-25 | Loewen Manufacturing Co. | Sieve construction for a combine harvester |
| US5984777A (en) * | 1998-02-12 | 1999-11-16 | Kuchar; George J. | Remote combine sieve adjuster |
| DE19824462A1 (de) | 1998-05-30 | 1999-12-02 | Same Deutz Fahr Spa | Selbstfahrende Erntemaschine |
| DE19931844A1 (de) * | 1999-07-09 | 2001-01-11 | Claas Selbstfahr Erntemasch | Einrichtung zur Verstellung der Sieböffnungsweite an Mähdreschern |
| CA2298195A1 (en) | 1999-07-16 | 2001-01-16 | Deere & Company | Cleaning shoe adjustment mechanism for a harvester |
| DE10030262A1 (de) * | 2000-06-20 | 2002-01-31 | Deere & Co | Reinigungseinrichtung |
| DE10111531A1 (de) * | 2001-03-10 | 2002-09-26 | Deere & Co | Sieb für einen Mähdrescher |
| DE10120957C2 (de) | 2001-04-27 | 2003-04-24 | Ford New Holland Nv | Vorrichtung zur Verstellung der Sieböffnungsweite an Mähdreschern |
| US6632136B2 (en) * | 2001-06-05 | 2003-10-14 | Deere & Company | Remote adjustment mechanism for a combine harvester cleaning element |
| US6890253B2 (en) * | 2002-01-07 | 2005-05-10 | Hcc, Inc. | Slat and sieve assembly |
-
2001
- 2001-04-27 DE DE10120957A patent/DE10120957C2/de not_active Expired - Fee Related
-
2002
- 2002-04-13 AT AT02749171T patent/ATE370646T1/de not_active IP Right Cessation
- 2002-04-13 US US10/475,642 patent/US6953397B2/en not_active Expired - Lifetime
- 2002-04-13 DE DE50210770T patent/DE50210770D1/de not_active Expired - Lifetime
- 2002-04-13 WO PCT/IB2002/002907 patent/WO2002087314A2/de not_active Ceased
- 2002-04-13 EP EP02749171A patent/EP1408733B1/de not_active Expired - Lifetime
-
2005
- 2005-02-23 US US11/063,365 patent/US7029392B2/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7029392B2 (en) | 2001-04-27 | 2006-04-18 | Cnh America Llc | Device for adjusting the width of a sieve mesh on combine harvesters |
| US10064336B2 (en) | 2015-07-23 | 2018-09-04 | Cnh Industrial America Llc | Sieve arrangements for a cleaning system in an agricultural harvester |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2002087314A3 (de) | 2003-01-09 |
| DE50210770D1 (de) | 2007-10-04 |
| ATE370646T1 (de) | 2007-09-15 |
| US20040112026A1 (en) | 2004-06-17 |
| EP1408733B1 (de) | 2007-08-22 |
| US6953397B2 (en) | 2005-10-11 |
| US20050233787A1 (en) | 2005-10-20 |
| US7029392B2 (en) | 2006-04-18 |
| DE10120957C2 (de) | 2003-04-24 |
| EP1408733A2 (de) | 2004-04-21 |
| DE10120957A1 (de) | 2002-10-31 |
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