CA2888057A1 - Mounted reversible plough with swivel limiter - Google Patents

Mounted reversible plough with swivel limiter Download PDF

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Publication number
CA2888057A1
CA2888057A1 CA 2888057 CA2888057A CA2888057A1 CA 2888057 A1 CA2888057 A1 CA 2888057A1 CA 2888057 CA2888057 CA 2888057 CA 2888057 A CA2888057 A CA 2888057A CA 2888057 A1 CA2888057 A1 CA 2888057A1
Authority
CA
Canada
Prior art keywords
plough
link
swivelling
rotation
mounted reversible
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.)
Abandoned
Application number
CA 2888057
Other languages
French (fr)
Inventor
Wilhelm Meurs
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Lemken GmbH and Co KG
Original Assignee
Lemken GmbH and Co KG
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Lemken GmbH and Co KG filed Critical Lemken GmbH and Co KG
Publication of CA2888057A1 publication Critical patent/CA2888057A1/en
Abandoned legal-status Critical Current

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Classifications

    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01BSOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
    • A01B3/00Ploughs with fixed plough-shares
    • A01B3/36Ploughs mounted on tractors
    • A01B3/40Alternating ploughs
    • A01B3/42Turn-wrest ploughs

Abstract

The invention relates to a mounted half-turn plough (1) having a setting device (8) for the front furrow width and the pulling point, and having a pivoting device (9), by way of which the plough frame (6) can always be pivoted, largely independently of the set front furrow width and the set pulling point, such that a sufficiently large and identical minimum clearance always remains between the rotating part (14) of the mounted half-turn plough (1) and the ground (45).

Description

DESCRIPTION
Mounted reversible plough with swivel limiter The invention concerns a mounted reversible plough in accordance with the generic term of patent claim 1.
Mounted reversible ploughs of this type have a plough frame that is slanted in the working position, which has to be lifted high enough during the rotating pro-cedure so that none of the components of the rotating part of the mounted reversi-ble plough can collide with the ground. If the mounted reversible plough has more than four plough body pairs, frequently all that helps is a swivelling device with which the plough frame is swivelled appropriately high enough. Swivelling usually means swivelling the slanted plough frame in the direction of the imaginary exten-sion of the axis of rotation. If the plough frame is not swivelled sufficiently here, components of the reversible plough, such as, for example, the support wheel or the rear end of the plough frame, can come into contact with the ground and be damaged. If the plough frame is swivelled in too much, the plough frame or parts of the rotating part of the reversible plough can hit the plough beam or the turning tool and also cause damage. A mounted reversible plough of this type can be seen in the German utility model GM 77 26 689. Here, the plough frame is swiv-elled via a hydraulic cylinder, whereby the swivelling movements in and out can be limited conditionally by limit stops. However, if the width of the front furrow is ad-justed, the clearance between the rotating part of the plough and the ground is adjusted as well at least. Another mounted reversible plough, in which the plough frame is swivelled before the half-turn plough frame position is reached, can be seen in the German patent registration DE 3 151 302 Al. Here, the swivelling height differs in dependence on the setting of the front furrow width. An adjustment of the front furrow width leads to an adjustment to the same extent of the lifting height. In particular an increase in the front furrow width reduces here the lifting height by the same amount and thus the clearance between the rotating part of the
2 mounted reversible plough and the ground. For this purpose, the hydraulic cylinder for swivelling the plough frame must have a correspondingly large working stroke.
Conversely, the parts of the rotating part of the mounted reversible plough must be arranged at a sufficiently large distance from the plough beam so that they cannot collide with the plough beam. Mounted reversible ploughs and so-called hybrid ploughs with electronic controls are also known in which the swivelling movement of the plough frame is registered by means of sensors. The swivelling movement is not ended until the plough frame has reached a given sufficiently wide swivelled position. However, solutions of this type for limiting the swivelling movement are relatively expensive and maintenance intensive with regard to both software and hardware.
The task of the invention is to create a mounted reversible plough in which the rotating part of the plough frame always has a sufficient clearciance from the ground during the rotating process, in which a clearance that is as uniform as pos-sible is achieved between the rotating part of the plough frame and the ground during the rotating process, in which the rotating part of the plough frame always has a favourable clearance from the centre of gravity to the plough beam, that is, is located extremely close to the plough beam, in which during the rotating process the rotating part of the plough frame cannot collide with stationary parts of the plough beam or of the turning tools and in which overall the swivelling limiter is designed simply and at low cost.
The task of the invention is solved with the characteristics of patent claim 1.
Through the instantaneous centre of rotation that is generated at the mo-ment of stopping in the area of the mounted reversible plough, which has approx-imately the same horizontal clearance to the plough beam in the direction of travel as the rotating part of the mounted reversible plough, which has the lowest vertical clearance from the ground during the rotating process, it is ensured that practically all adjustments on the mounted reversible plough with regard to front furrow width, traction point and working width per plough body have to the greatest extent no
3 effect on the lifting height of the plough frame or the clearance that remains be-tween the rotating part of the mounted reversible plough and the ground. The freewheel of the limit stop ensures that after a limited swivelling movement in the swivelling direction the outward swivelling movement in the opposite direction can be carried out freely, that is, it is not limited by the limit stop.
A preferred embodiment of the invention provides that the adjusting device consists of a converging steering gear, which consists of a supporting main link and an additional link, whose imaginary extensions intersect in front of the plough beam, preferably at the distance from the plough beam in the direction of travel at which the imaginary extensions of the tractor's lower links intersect, whereby the position of the main link and of the additional link of the converging steering gears can be changed via an adjusting link and a change to the setting of the adjusting links leads to a swivelling of the plough frame around a second centre of rotation, which is formed from the instantaneous centre of rotation of the converging steer-ing gears with the main link and the additional link. Because of this arrangement of the converging steering gears, each change of the position of this converging steering gear by means of the adjusting link leads to a change in the position of the plough beam, the tractor's lower links and of the traction point that is formed by the point of intersection or instantaneous centre of rotation of the imaginary exten-sions of the tractor's lower links, but a preset front furrow width is not changed.
The advantage of an adjusting device in which a preset front furrow width is not changed through a change to the traction point can be integrated into the solution in accordance with the invention.
The invention provides advantageously that the limit stop is designed as a tension link with which the swivelling in of the plough frame is limited, whereby the imaginary extension of the tension links and the imaginary extension of the main link intersect behind the plough beam, preferably in the area of the rotating part of the mounted reversible plough that has the lowest clearance to the ground during the rotating process. This arrangement ensures that on adjustments the plough frame or the rotating part of the plough swivels around the point of intersection
4 using the adjusting link. Because the most critical, that is, the narrowest, area for the clearance between plough and ground is located there, which, however, is not affected by the adjustments, these adjustments and other adjustments as well do not have any effect on the ground clearance. The tension link is limited as to its length and has a freewheel that does not hinder the adjustments of the other ad-justing parts that lead among other things to the plough frame pivoting around the first centre of rotation.
If the freewheel of the limit stop or of the tension link is designed as a slot, a particularly simply constructed embodiment for an effective freewheel is realised.
The invention provides further advantageously that the tension link is de-signed as a chain, cable or belt. For constructional reasons, a chain, a cable or a belt as well can be employed as the tension link that effectively limit the swivelling range, but can also serve as a simple freewheel. Other construction forms are also conceivable as tension link with freewheel.
The invention is characterised in particular in that a mounted reversible plough is created in which the swivelling limiter is constructed simply and cheaply, in particular in combination with the steering gear with tension link and the con-verging steering gear with additional link. The plough can be set easily, but also, in particular on major changes to the existing adjusting devices, always swivelled in at a sufficient height, it is compact and simply constructed and does not place any great demands on the tractor with regard to the position of the centre of gravity. In the rotating process the rotating part of the plough frame always has sufficient clearance to the ground and there is always a clearance between the rotating part of the plough frame and the ground that remains as constant as possible. It is also guaranteed that the rotating part of the plough frame always has a favourable cen-tre of gravity clearance to the plough beam and is thus arranged extremely closely at the plough beam. In addition, the rotating part of the plough frame cannot collide with stationary parts of the plough beam or of the turning tools.

Further details of the invention can be seen in the figures and in the de-scriptions of the figures, which show a preferred embodiment of the invention:
Figure 1 shows a top view of the mounted reversible plough in the
5 working position, Figure 2 shows a side view of the mounted reversible plough in a semi-rotated position and Figure 3 shows a further top view of the mounted reversible plough in the working position.
Figure 1 shows the top view of the mounted reversible plough 1 with a plough beam 2, the top link attachment points 3, 4 and 5 for the connection with the three-point linkage of a tractor that is not shown. The plough beam 2 accom-modates the rotary shaft 44 with the integrated supporting body 49, on which the main link 19 is arranged by means of link bolt 33 and the additional link 20 is ar-ranged by means of pivot bolt 37 so that they can be swivelled horizontally.
The plough frame 6 with its frame plate 32 is connected at the rear by means of link bolt 34 with the main link 19 and can also be swivelled horizontally. The link bolt 34 also accommodates the central link 31, which is connected at the outside with the additional link 20 by means of pivot bolt 38. The main link 19 and the additional link 20 form a converging steering gear 18 whose position can be changed using the adjusting link 23. The adjusting link 23 is connected with bolt 35 to the main link 19 and at a distance from link bolt 34 to the frame plate 32 or to the plough frame 6 by means of bolt 36. The hydraulic cylinder 41 is connected at central link 31 by means of bolt 42 and at the rear to the support plates 32 by means of bolt 43. The working width of the plough bodies 7 that are arranged rotatable on the plough frame 6 can be changed via the hydraulic cylinder 41, the steering 50 and the control rod 51. The parking stand 40 is fastened to the supporting body 49 by means of the bolts 37 and optionally as well the tension link 24 that acts as limit stop 12, but which for the sake of simplicity is linked swivelling with the reinforced hose connections 47 or with the functionally comparable bearing pins 52 of the hydraulic cylinder 10 that acts as an additional link 20. Further details of tension
6 link 24 can be seen in the description of Figure 3. The plough frame 6 or the rotat-ing part of the plough frame 14 is rotated via the hydraulic cylinder 30, which en-gages at rotary shaft 44 and is supported by plough beam 2.
Figure 2 shows a side view of the mounted reversible plough 1 in a half-rotated position, with a plough frame 6 that is swivelled in completely by swivelling device 9. The plough frame 6 with its frame plate 32, the main link 19 and the ad-justing link 23 forms a unit here that is swivelled in by hydraulic cylinder 10 that serves as additional link 20 around the first centre of rotation 11 to achieve suffi-cient clearance between the rotating part 14 of the mounted reversible plough and the ground 45. The swivelling movement and the swivelling path are limited by means of limit stop 12. Tension link 24, which is connected swivelling in the area of the pivot bolt 37 with the hose connections 47 of the hydraulic cylinder 10, acts here as limit stop 12. The tension link 24 is connected at the rear with the frame plate 32 with stop bolt 39. Together with the main link 19 the tension link 24 forms a steering gear 15 that is only effective at the moment that the swivelling move-ment of plough frame 6 is limited and forms an instantaneous centre of rotation 16.
In this case, this instantaneous centre of rotation 16 is located behind the second plough body 7 at a distance from the plough beam 2 at which in the normal case with a four-furrow mounted reversible plough 1 the lowest point between the sup-port wheel 27 and the ground 45 is located during the rotating process. There are several drill holes 53 in the frame plate 32 for the connection with the tension link 24 that are intended for the stop bolt 39. By means of an appropriate selection of the drill hole 53 the convergence of the main link 19 and of the tension links 24 to one another can be changed and thus the position of the instantaneous centre of rotation 16 that becomes instantaneous centre of rotation 16', which is positioned further to the rear. Here, the tension link 24 has a freewheel 13 formed as a slot 26, which does not prevent a swivelling out movement of the plough frame 6 or adjustments during work with regard to front furrow width by means of the addi-tional link 20, with regard to the traction point by means of the adjusting link 23 or changes to the working width per body by means of the hydraulic cylinder 41.
All possible adjustments, for example to the front furrow width and the traction point CA 02888057 2015-04-13 '
7 by means of the adjusting device 8 and also to the working width per body with the control devices 20, 23 and 41, take effect at the moment of the swivelling limit through the tension link 24 in such a way that the position of the plough frame 6 with regard to the distance from the ground 45 does in fact change, but not in the area of the rear instantaneous centre of rotation 16 or 16', which is formed from the point of intersection of the imaginary extension 21 of the main link 19 with the imaginary extension 25 of the tension link 24. Expediently, the position of the ten-sion link 24 is chosen so that the instantaneous centre of rotation 16 is positioned where the lowest distance between the rotating part 14 of the mounted reversible plough 1 and the ground 45 is found during the rotating process. Usually, the sup-port wheel 27 that swivels around during the rotating process forms the lowest point of the rotating part 14 of the mounted reversible plough 1. In Figure 2 the swivelling support wheel 27 has reference number 46 and is shown with dashes.
The lowest point is frequently found in the middle area 17 of the rotating part 14 of the plough frame 6 at the same distance from plough beam 2 as for example with a mounted reversible plough with four pairs of plough bodies 7 or with five pairs of plough bodies 7. This means that the tension link 24 must be positioned so that it forms the instantaneous centre of rotation 16 or 16' there with the main link 19 at the moment of the swivel stop. However, with larger mounted reversible ploughs 1, for example with six pairs or seven pairs of plough bodies 7, the instantaneous centre of rotation 16 or 16' must be positioned more in the rear area of the mount-ed reversible plough 1, because then the lowest point of the swivelling support wheel 46 is found in a position displaced to the rear seen in the direction of travel 48. The tension link 24 must then be connected with the appropriate drill hole 53 of frame plate 32 by means of stop bolt 39.
Figure 3 shows a further top view of the mounted reversible plough 1 in working position. It also makes the position of the converging steering gears with the main link 19 and the additional link 20 clear, whose imaginary extensions 21 and 22 intersect in front of plough beam 2 and form the instantaneous centre of rotation 28. Preferably, in the direction of travel 48 the instantaneous centre of ro-tation 28 should be at the same distance from the plough beam 2 as the point of
8 intersection of the imaginary extensions of the tractor's lower link. The additional link 20 must then be arranged correspondingly to the main link 19. On a change of the position of the steering gear 18 by means of adjusting link 23, the plough frame 6 or the rotating part 14 of the mounted reversible plough 1 swivel kinemati-cally around the second centre of rotation 29, which also forms the instantaneous centre of rotation 28. This ensures that after an adjustment of the front furrow width by means of additional link 20 a traction point adjustment is enabled that, as is generally known, does not lead to a change to the front furrow width.

Claims (5)

9
1. Mounted reversible plough (1) with a plough beam (2) with top link at-tachment points (3, 4, 5) for mounting on the three-point linkage of a tractor, with a plough frame (6) with at least three pairs of plough bodies (7), with an adjusting device (8) for adjusting the front furrow width and the traction point and with a swivelling device (9) with a hydraulic cylinder (10), with which the plough frame (6) is swivelled in directly or indirectly before during the rotating process around a centre of rotation with regard to the plough beam (2) and swivelled out again after or during the rotating process and with a swivelling limiter with which the swivelling in path of the plough frame (6) is limited, characterised in that the swivelling limiter comprises a limit stop (12) with freewheel (13), which, along with limiting the swivelling movement of the rotating part (14) of the mounted re-versible plough (1) around a first centre of rotation (11), is also part of a steering gear (15) whose instantaneous centre of rotation (16, 16') is located behind the plough beam (2) whereby the instantaneous centre of rotation (16, 16') in the limit position seen in the direction of travel (48) has practically the same distance to the plough beam (2) as the rotating part (14) of the mounted reversible plough (1) that has the lowest distance to the ground (45).
2. Mounted reversible plough in accordance with Claim 1, characterised in that the adjusting device (8) consists of a converging steering gear (18), which consists of a supporting main link (19) and an additional link (20), whose imaginary exten-sions (21, 22) intersect in front of the plough beam (2), preferably at the distance in the direction of travel (48) from the plough beam (2) at which the imaginary ex-tensions of the tractor's lower links intersect as well, whereby the position of the main link (19) and of the additional link (20) of the converging steering gears (18) can be changed by means of an adjusting link (23), whereby a change of the set-ting of the adjusting links (23) causes the plough frame (6) to swivel around a sec-ond centre of rotation, which is formed from the instantaneous centre of rotation (28) of the converging steering gears (18) with main link (19) and additional link (20).
3. Mounted reversible plough in accordance with Claim 1 or 2, characterised in that that the limit stop (12) is designed as a tension link (24) with which the swivelling path of the plough frame (6) is limited, whereby the imaginary extension (25) of the tension links (24) and the imaginary extension (21) of the main link (19) intersect behind plough beam (2), preferably in the area of the rotating part (14) of the mounted reversible plough (1) that has the lowest distance from the ground (45) during the rotating process.
4. Mounted reversible plough in accordance with Claim 1 or 3, characterised in that that the freewheel (13) of the limit stop (12) or of the tension links (24) is designed as a slot (26).
5. Mounted reversible plough in accordance with Claim 3, characterised in that that the tension link (24) is designed as a chain, cable or belt.
CA 2888057 2012-10-30 2013-10-29 Mounted reversible plough with swivel limiter Abandoned CA2888057A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102012021721.8A DE102012021721B4 (en) 2012-10-30 2012-10-30 Mounted
DE102012021721.8 2012-10-30
PCT/DE2013/000639 WO2014067508A1 (en) 2012-10-30 2013-10-29 Mounted half-turn plough with restricted pivoting

Publications (1)

Publication Number Publication Date
CA2888057A1 true CA2888057A1 (en) 2014-05-08

Family

ID=49765744

Family Applications (1)

Application Number Title Priority Date Filing Date
CA 2888057 Abandoned CA2888057A1 (en) 2012-10-30 2013-10-29 Mounted reversible plough with swivel limiter

Country Status (9)

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EP (1) EP2914081B1 (en)
JP (1) JP6224116B2 (en)
CN (1) CN104994720B (en)
CA (1) CA2888057A1 (en)
DE (1) DE102012021721B4 (en)
PL (1) PL2914081T3 (en)
RU (1) RU2634944C2 (en)
UA (1) UA113786C2 (en)
WO (1) WO2014067508A1 (en)

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EP3982706B1 (en) * 2019-06-11 2024-04-03 Maschio Gaspardo S.p.A. Mounted reversible plough
DE102020108472A1 (en) * 2020-03-27 2021-09-30 Amazonen-Werke H. Dreyer SE & Co. KG Mounted reversible plow
IT202000009571A1 (en) * 2020-04-30 2021-10-30 Maschio Gaspardo Spa MOUNTED REVERSIBLE PLOW
DE102021126501A1 (en) 2021-10-13 2023-04-13 Pöttinger Landtechnik Gmbh mounted reversible plough

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Also Published As

Publication number Publication date
EP2914081B1 (en) 2019-07-31
RU2634944C2 (en) 2017-11-08
WO2014067508A1 (en) 2014-05-08
UA113786C2 (en) 2017-03-10
PL2914081T3 (en) 2020-01-31
RU2015120622A (en) 2016-12-20
CN104994720A (en) 2015-10-21
CN104994720B (en) 2017-04-19
JP2015533506A (en) 2015-11-26
EP2914081A1 (en) 2015-09-09
DE102012021721A1 (en) 2014-04-30
JP6224116B2 (en) 2017-11-01
DE102012021721B4 (en) 2016-12-01

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