CA2933063A1 - Round baler having a sensor for detecting the bale size - Google Patents

Round baler having a sensor for detecting the bale size Download PDF

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Publication number
CA2933063A1
CA2933063A1 CA2933063A CA2933063A CA2933063A1 CA 2933063 A1 CA2933063 A1 CA 2933063A1 CA 2933063 A CA2933063 A CA 2933063A CA 2933063 A CA2933063 A CA 2933063A CA 2933063 A1 CA2933063 A1 CA 2933063A1
Authority
CA
Canada
Prior art keywords
bale
sensor
roller
round baler
detecting
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
CA2933063A
Other languages
French (fr)
Inventor
Jean-Alexis Mercier
Sebastien Guerin
Stephane Biziorek
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.)
Deere and Co
Original Assignee
Deere and Co
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 Deere and Co filed Critical Deere and Co
Publication of CA2933063A1 publication Critical patent/CA2933063A1/en
Abandoned legal-status Critical Current

Links

Classifications

    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01FPROCESSING OF HARVESTED PRODUCE; HAY OR STRAW PRESSES; DEVICES FOR STORING AGRICULTURAL OR HORTICULTURAL PRODUCE
    • A01F15/00Baling presses for straw, hay or the like
    • A01F15/08Details
    • A01F15/0825Regulating or controlling density or shape of the bale
    • A01F15/0833Regulating or controlling density or shape of the bale for round balers
    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01FPROCESSING OF HARVESTED PRODUCE; HAY OR STRAW PRESSES; DEVICES FOR STORING AGRICULTURAL OR HORTICULTURAL PRODUCE
    • A01F15/00Baling presses for straw, hay or the like
    • A01F15/08Details
    • A01F15/0875Discharge devices
    • A01F2015/0891Weighing the finished bale before falling to ground

Abstract

A round baler is equipped with a bale compression chamber, a roller, which is supported against the frame of the round baler so as to be rotatable and, during the formation of the bale, so as to be otherwise essentially stationary and which directly or indirectly interacts with the bale, and a sensor for detecting the size of a bale forming in the bale compression chamber.
The sensor is configured for detecting the supporting force with which the roller bears against the frame.

Description

ROUND BALER HAVING A SENSOR FOR DETECTING THE BALE SIZE
The invention relates to a round baler having a bale compression chamber, a roller, which is supported against the frame of the round baler so as to be rotatable and, during the formation of the bale, so as to be otherwise essentially stationary and which directly or indirectly interacts with the bale, and a sensor for detecting the size of a bale forming in the bale compression chamber.
Background Round balers are used for producing bales from stalk-shaped agricultural crop.
Such round balers comprise a bale compression chamber and associated compression means.
After a bale has been formed and, if necessary, wrapped with net, yarn, or a film, said bale is ejected backward out of the bale compression chamber.
Round balers are usually equipped with sensors for detecting the size of the bale in the bale compression chamber. These sensors are used for detecting whether the bale has already reached a specified size and the bale formation process should therefore be terminated, and/or for detecting the lateral distribution of the crop in the bale compression chamber in order to ensure, by means of suitable steering measures, which can be carried out manually by the operator of a towing vehicle or via an automated system, that the bale compression chamber is sufficiently uniformly filled across its width, since, as a rule, the picked-up swath is narrower than the bale compression chamber. For the detection of the lateral distribution of the crop in the bale compression chamber, at least two sensors, which are disposed next to one another, should be provided in order to detect the size of the bale at laterally spaced points of the bale compression chamber.
In the prior art, the size of the bale is detected by means of sensors interacting directly with the bale so as to have contact therewith (US 2008/00871777 Al) or so as not to have contact therewith (DE 10 2004 042 740 Al), or the tension in belts surrounding the bale compression chamber is detected in that the position of spring-loaded rolls resting against the belt is detected (US 4 850 271), or the position of spring-loaded idler pulleys of the belt is detected using potentiometers or contactlessly (US 4 924 405 A, EP 2 698 055 Al).

Summary The previous sensors require either relatively expensive, contactlessly operating sensors or mechanical sensors for detecting the position of a roll resting against the belt or an idler pulley of the belt, which must be calibrated in a complex manner during the production of the baler.
The problem addressed by the invention is considered to be that of providing a round baler in which the aforementioned disadvantages are not present or are present to a reduced extent.
A round baler is equipped with a bale compression chamber, a roller, which is supported against the frame of the round baler so as to be rotatable and, during the formation of the bale, so as to be otherwise essentially stationary and which directly or indirectly interacts with the bale, and a sensor for detecting the size of a bale forming in the bale compression chamber. The sensor is configured for detecting the supporting force with which the roller bears against the frame.
In other words, the sensor detects the force with which a roller, which is rotatable but otherwise essentially stationary during the formation of the bale, bears against the frame of the round baler. Since the roller interacts directly or indirectly with the bale formed in the bale compression chamber (in the first case, the bale rests against the roller and, in the second case, an endless compression means interacting with the bale, in particular, rests against the roller or partially surrounds said roller), the supporting force of the roller depends on the size of a bale that is currently being formed in the bale compression chamber. Such a supporting force can be relatively easily detected using inexpensive sensors, such as strain gauges, load cells, piezoelectric sensors, or the like. In this manner, a sensor system for detecting the size of a bale in the bale formation chamber is obtained, which sensor system is inexpensively designed and can be calibrated in a non-complicated manner during production. The output signal of the sensor indicates the size of the bale, which, in turn, can be displayed to the operator of a towing vehicle of the baler and can be used for controlling functions of the round baler, in particular for stopping the towing vehicle, initiating a wrapping process, and ejecting the bale.
2 In particular, one sensor is assigned to each of the two ends of the roller for the purpose of detecting the lateral distribution of the crop in the bale compression chamber. The signals of the sensors can be displayed to the operator so that he can steer the towing vehicle and the baler across the field in the sense of forming a cylindrical bale, or said signals can be used by an automatic steering system in the aforementioned sense.
In one possible embodiment, the roller is mounted on a swivellable holder, which is preloaded by the force of a spring, while the spring acts on the holder and the roller in the sense of tensioning the compression means, and the sensor is configured for detecting the force with which the holder bears against a stop, which is connected to the frame and against which the tensile force of the compression means pulls the holder.
In another embodiment, the roller is supported against a swivelling part, which can be rotated between a bale formation position and a bale ejection position, while the swivelling part, in the bale formation position, can be coupled to the frame by means of a locking bar, and the sensor is configured for detecting the force transmitted by the locking bar.
Exemplary Embodiments Three exemplary embodiments of the invention, which are described in greater detail in the following, are depicted in the drawings, wherein the reference numbers should not be used to arrive at a restricting interpretation of the claims. In the drawings:
Figure 1 shows a schematic side view of a first embodiment of a round baler, Figure 2 shows a schematic side view of a second embodiment of a round baler, and Figure 3 shows a schematic side view of a third embodiment of a round baler.
Figure 1 shows a schematic side view of a round baler 10, which comprises a frame 12, which is supported on wheels 14 and can be drawn by means of a drawbar 82 by a non-illustrated towing vehicle across a field in its forward direction, which extends toward the left
3 in Figure 1, in order to gather crop by means of a lifter, which is not shown, and convey said crop via an inlet channel 20 into a bale compression chamber 16 in which a bale 18 is then successively formed. The bale compression chamber 16 is delimited by rollers 22, 24, 26, which are rotatably mounted in the frame 12 and are adjacent to the inlet channel 20. In addition, the bale compression chamber 16 is delimited by an endless compression means 64 in the form of one or more belts, which are disposed laterally next to one another and partially surround the further roller or rollers 28, 30, 32, 34, 36, 38, 40, 42, 62 and 44 as well as the roller 22, of which one, multiple, or all are rotationally driven during the formation of a bale 18. The rollers 28, 30, 38, 40 and 22 are rotatably mounted in the frame 12, i.e., apart from their rotation about the longitudinal axis, they do not move with respect to the frame 12 when a bale 18 is formed.
Each of the rollers 32 and 36 is mounted at their two ends on a support 50, which is articulated at its upper end on the frame 12 so as to be swivellable about an axle 74. The support 50 is rigidly coupled to one arm 52, which is preloaded by means of a hydraulic cylinder 54. The support 50 therefore moves upward during the formation of a bale 18 against a set pressure, which is present in the piston rod chamber of the hydraulic cylinder 54, when a bale 18 forms and the bale compression chamber 16 thereby becomes larger and larger in that the compression means 64, which delimit the bale compression chamber 16 toward the top and the rear, deflect to an ever-increasing extent, as indicated in Figure 1 with dashed lines.
The rollers 42, 62 and 42 are fastened on a swivelling part 46, which can be swivelled backward and upward about an upper axle 76 by means of an actuator 48 in the form of a hydraulic cylinder, in order to eject a bale 18 out of the bale compression chamber 16. The bale 18 then rolls on an unloading ramp 78 onto the ground.
The roller 34 is fastened on a holder 58, which is centrally articulated on the frame 12 so as to be swivellable about an axle 56, and is preloaded by a spring 60. The spring 60 tends to load the compression means 64 in that it pulls the roller 34 upward, in the counterclockwise direction. In the normal bale formation operation, the holder 58 rests on a stop 68 and moves out of its position shown in Figure 1, in the counterclockwise direction, only when the range of motion of the support 50 is insufficient to hold the compression means 64 taut,
4 which is possible only after a finished bale 18 has been ejected and the formation of a new bale 18 has begun. The round baler 10 is per se known essentially from EP 1 396 187 Al and EP 1 364 574 A1.
A sensor 66 is used for detecting the size of a bale 18, which sensor detects the force with which the holder 58 rests on the stop 68. This force depends on the tensile force in the compression means 64, which, in turn, depends on the size of the bale 18. The sensor 66 is designed, in particular, in the form of a strain gauge or a load cell. The sensor 66 is connected to an evaluation circuit 70, which is preferably additionally connected to a further sensor 66 on the other side of the round baler 10. On the other side of the round baler 10 are located, in addition, a further holder 58, a further stop 68, and a further spring 60, which are independent of the components (holder 58, stop 68, and spring 60) shown in Figure 1 and therefore can move independently thereof, and so, in the case of non-cylindrical bales 18, different values are detected by the two sensors 66. The output values of the sensors 66 are transmitted via the evaluation circuit 70 to a display device 72, which can be located, in particular, in the cab of the towing vehicle. A bus line 80, in particular, is utilized for this purpose. The operator therefore recognizes the shape of the bale 72 on the display device 72 on the basis of two bar graphs or any other type of depiction and, if the bars are not the same size, he can take countermeasures in order to form a cylindrical bale.
This task can also be performed by an automated system. The evaluation circuit can also control the automated system in order to stop the towing vehicle when a bale 18 has reached a specified size, and to wrap said bale with net, film, or yarn, and finally eject it. Reference is made in this regard to EP 1 813 146 A2.
In addition, the signal of the sensor 66 or the sensors 66 can be used for detecting an overload of the round baler 10. If the output signal of the sensor 66 therefore indicates that a threshold value is exceeded, which threshold value corresponds to a maximum tensile force in the compression means 64, a warning message can be provided to the operator via the display device 72, and/or the pressure in the piston rod chamber of the hydraulic cylinder 54 and, therefore, the tension in the compression means 64 is automatically reduced. A
proportional control valve (not shown) can be suitably controlled for this purpose.

In the embodiment according to Figure 2, the swivelling part 46 can be locked on the frame 12 by means of a locking bar 84. The locking bar 84, at its front end, is articulated on the frame 12 about an axle 86 and encloses a pin 88 connected to the swivelling part 46. An actuator, which is not shown, is used for pulling the locking bar 84 downward out of its position that is assumed when a bale 18 is formed and that is shown in Figure 2 before the swivelling part 46 is swivelled by the actuator 48 about the axle 76 in order to eject a finished bale 18. The locking bar 84 of the embodiment according to Figure 2 can also be used in the embodiments according to Figures 1 and 3. The locking bar 84 relieves the stress on the actuator 48 during the formation of the bale 18. There is no stress on the actuator 48 during this time.
In the embodiment according to Figure 2, a sensor 66' detects the force transmitted by the locking bar 84. The sensor 66' can likewise be designed in the form of a strain gauge or a load cell. Preferably, two locking bars 84 and associated sensors 66' are provided on both sides of the round baler 10 and are both connected to the evaluation circuit 70.
The design and the mode of operation of the round baler 10 according to Figure 2 are identical to the round baler 10 according to Figure 1. The sensors 66' detect the force in the locking bar 84. This force depends on the tensile force in the compression means 64, which, in turn, depends on the size of the bale 18. The tensile force in the compression means 64 propagates via the roller 44, the swivelling part 46, and the locking bar 84 to the frame 12.
The signals of the sensors 66' are used in the manner described above with respect to Figure 1.
In the embodiment according to Figure 3, the sensor 66" detects the force with which the axle or the shaft 90 of the roller 24 disposed above the inlet channel 20 bears against the frame 12. Analogously, the sensor 66" could also be configured for detecting the force with which the axle or the shaft of the roller 22 or 26 bears against the frame 12.
The sensor 66"
can likewise be designed in the form of a strain gauge or a load cell.
Preferably, two sensors 66" are provided on both sides of the round baler 10 and are both connected to the evaluation circuit 70.

The design and the mode of operation of the round baler 10 according to Figure 3 are identical to the round baler 10 according to Figure 1. The sensors 66" detect the supporting force of the roller 24, which, in turn, depends on the size of the bale 18.
The signals of the sensors 66" are used in the manner described above with respect to Figure 1.

Claims (6)

CLAIMS:
1. A round baler that includes a bale compression chamber, a roller, which is supported against the frame of the round baler so as to be rotatable and, during the formation of the bale, so as to be otherwise essentially stationary and which directly or indirectly interacts with the bale, and a sensor for detecting the size of a bale forming in the bale compression chamber, characterized in that the sensor is configured for detecting the supporting force with which the roller bears against the frame.
2. The round baler according to Claim 1, wherein the bale compression chamber is enclosed by an endless compression means, which partially surrounds the roller.
3. The round baler according to Claim 1 or 2, wherein a sensor is assigned to each of the two ends of the roller.
4. The round baler according to Claim 2 or 3, wherein the roller is mounted on a swivellable holder, which is preloaded by the force of a spring, the spring acts on the holder and the roller in the sense of tensioning the compression means, and the sensor is configured for detecting the force with which the holder bears against a stop, which is connected to the frame and against which the tensile force of the compression means pulls the holder.
5. The round baler according to Claim 2 or 3, wherein the roller is supported against a swivelling part, which can be rotated between a bale formation position and a bale ejection position, the swivelling part, in the bale formation position, can be coupled to the frame by means of a locking bar, and the sensor is configured for detecting the force transmitted by the locking bar.
6. The round baler according to any one of Claims 2 to 5, wherein a warning message is provided to the operator via a display device and/or the tension in the compression means is automatically reduced if the output signal of the sensor indicates that a threshold value is exceeded, which threshold value corresponds to a maximum tensile force in the compression means.
CA2933063A 2015-06-16 2016-06-15 Round baler having a sensor for detecting the bale size Abandoned CA2933063A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102015211035.4A DE102015211035A1 (en) 2015-06-16 2015-06-16 Round baler with a bale size sensor
DE102015211035.4 2015-06-16

Publications (1)

Publication Number Publication Date
CA2933063A1 true CA2933063A1 (en) 2016-12-16

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CA2933063A Abandoned CA2933063A1 (en) 2015-06-16 2016-06-15 Round baler having a sensor for detecting the bale size

Country Status (4)

Country Link
EP (1) EP3106020B1 (en)
CA (1) CA2933063A1 (en)
DE (1) DE102015211035A1 (en)
PL (1) PL3106020T3 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017215438A1 (en) 2017-09-04 2019-03-07 Deere & Company Weighing device and harvesting device
GB201909540D0 (en) * 2019-07-02 2019-08-14 Kuhn Geldrop Bv Variable chamber baler
CN110249808A (en) * 2019-08-15 2019-09-20 山东川国机械制造有限公司 A kind of Multifunctional crop baler
DE102021133002A1 (en) 2021-12-14 2023-06-15 Usines Claas France S.A.S. Round baler and method for determining a diameter of a round bale

Family Cites Families (12)

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Publication number Priority date Publication date Assignee Title
US4924405A (en) 1987-05-14 1990-05-08 Ford New Holland, Inc. Round baler with continuous bale size monitoring
US4850271A (en) 1987-09-29 1989-07-25 Hesston Corporation Round baler having simulated bale size and shape indicator
DE19504685A1 (en) * 1995-02-13 1996-08-14 Matthies Hans Juergen Roller baling press for straw or hay
DE20005963U1 (en) * 2000-03-31 2000-06-21 Kverneland Gottmadingen Gmbh & Agricultural machine
DE10222715A1 (en) 2002-05-23 2004-01-08 Deere & Company, Moline Round baler
DE10241215A1 (en) 2002-09-06 2004-03-18 Deere & Company, Moline Round baler with weighing device
DE102004042740A1 (en) 2004-09-03 2006-03-23 Deere & Company, Moline Round baler with a bale forming chamber of variable size and a device for measuring the diameter and shape of a round bale
US7404355B2 (en) 2006-01-31 2008-07-29 Deere & Company Tractor and baler combination with automatic baling and tractor halt control
US7913482B2 (en) 2006-10-11 2011-03-29 Acco Corporation Bale shape monitor for round balers
DE102007012174B4 (en) * 2007-03-14 2017-07-27 Deere & Company Round baler and method for changing the friction on the side walls
DE602007013749D1 (en) * 2007-08-22 2011-05-19 Deere & Co Bales with automatic sensor calibration
US8516957B1 (en) 2012-08-16 2013-08-27 Cnh America, Llc Measuring distance for bale size in a round baler

Also Published As

Publication number Publication date
EP3106020A1 (en) 2016-12-21
DE102015211035A1 (en) 2016-12-22
EP3106020B1 (en) 2018-09-26
PL3106020T3 (en) 2019-05-31

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Legal Events

Date Code Title Description
EEER Examination request

Effective date: 20210514

FZDE Discontinued

Effective date: 20221215

FZDE Discontinued

Effective date: 20221215