DE102017106797A1 - Cutting unit, loading unit and agricultural implement - Google Patents

Abstract

A cutting unit (7) of a loading unit (1), comprising a conveying drum (8) having a plurality of axially spaced conveying elements (9), with a cutting unit (11) having a plurality of axially spaced cutting blades (12), each cutting blade (12) 12) is positioned between each two adjacent conveying elements (9), with a biasing mechanism (13) having a plurality of biasing members (14) for biasing the cutting blades (12) individually, each cutting blade (12) extending beyond one of the respective biasing members (14 ) provided clamping force in a cutting position and against this clamping force from the cutting position out into a protective position is displaceable, with a detection device (19) for schneidmesserindividuelle position detection of all cutting blades (12) and / or the biasing elements (14), namely for detecting whether the respective cutting blades (12) the cutting position or the protective position and / or the biasing element (4) of the respective cutting blade (12) occupies a position corresponding to the cutting position or the protective position, and to a control device (20) which evaluates signals provided by the detection device (19).

Description

The invention relates to a cutting unit of a loading unit of an agricultural implement according to the preamble of claim 1. Furthermore, the invention relates to a loading unit of an agricultural implement with such a cutting and an agricultural implement with such a charging unit.

An agricultural implement such as a loader wagon or even a press has a loader unit that serves to receive crops that are combined into a swath, such as grass, hay or straw, from a substrate, and to cut the harvested crop. To pick up the crop from the ground is a receiving device of the charging unit, which is also referred to as a pickup. To cut the recorded crop is a cutting unit of the charging unit.

From the DE 10 2014 102 391 A1 the basic structure of such a cutting unit is known. Thus, the cutting mechanism comprises a conveyor drum with a plurality of spaced apart in the axial direction of the conveyor drum conveyor elements. Each conveyor element is designed as a drive plate and has radially outside of the drive plate projecting driver tines.

Furthermore, the cutting unit of the DE 10 2014 102 391 A1 a cutting unit having a plurality of spaced apart in the axial direction of the conveyor drum cutting blade, each cutting blade of the cutting unit between each two adjacent conveying elements of the conveyor drum, which are spaced in the axial direction, is positioned. The cutting mechanism further has a biasing mechanism, which may be designed as a toggle mechanism. The pretensioning mechanism has a plurality of biasing elements for cutting knife pre-tensioning of the cutting blades.

With each cutting blade, a biasing element cooperates, wherein a tensioning force provided by the respective biasing member displaces the respective cutting blade into a cutting position, wherein the respective cutting blade is displaceable against this clamping force to protect it from damage from the cutting position into a protective position. This takes place when foreign bodies reach the area of the respective cutting blade, for example, foreign objects not belonging to the actual crop, such as stones, branches or the like. In operation, the cutting blades are still subject to wear.

From the DE 20 2004 004 133 U1 It is known to detect the cutting blade of a cutting unit using a detection device, in which case the detection device directly detects the sharpness of the individual knives. The detection device can be designed as an optical sensor. The immediate detection of the sharpness of the knife is possible only with great effort. There is therefore a need for a cutting unit of a loading unit of an agricultural implement, in which the sharpness of the knife can be determined easier and more reliable.

Proceeding from this, the present invention seeks to provide a novel cutting unit, a loading unit of an agricultural implement with such a cutting unit and an agricultural implement with such a charging unit.

This object is achieved by a cutting unit according to claim 1.

The cutting unit according to the invention has a detection device for the cutting knife-specific position detection of all cutting blades and / or the biasing elements of all cutting blades, namely for detecting whether the respective cutting blade, the cutting position or the protective position and / or the biasing member of the respective cutting blade one of the cutting position or the protective position corresponding position occupies. Furthermore, the cutting unit has a control device which evaluates signals provided by the detection device.

In the cutting unit according to the invention, it is detected individually for each cutting knife whether the respective cutting blade assumes the cutting position or the protective position and / or whether the biasing element of the respective cutting blade assumes a position corresponding to the cutting position or the protective position. This position detection is evaluated by the control device. In particular, it can be concluded from this on a wear of the cutting blade and so indirectly on the sharpness of the same. This allows a simpler and more reliable determination of the sharpness of cutting blades on a cutting unit than is possible with the prior art.

In a further development, the control device determines the number of protection position receipts of the respective cutting blade individually and / or the corresponding position receipts of the biasing element of the respective cutting blade individually. Then, when the number of protective position receipts of the respective cutting blade and / or the corresponding position receipts of the biasing member greater than a Limit is, it is preferably provided that the control device automatically generates a warning message and / or automatically triggers a regrinding of the respective cutting blade. This allows a particularly advantageous and reliable determination of the sharpness of the cutting blade. Exceeds the number of protective position revenue of a cutting blade and / or the corresponding positions of the biasing member the limit, it is closed to a no longer sufficiently sharp cutting blade and control side triggered a corresponding measure.

According to a first variant, the control device determines exclusively the position of all cutting blades. According to a second variant, the control device determines the position of all cutting blades and all biasing elements and plausibility of the detected positions of the cutting blade based on the detected positions of the biasing elements. The plausibility of the cutting blade positions depending on the respective positions of the biasing elements is particularly preferred in order to make the determination of the sharpness of cutting blades more reliable.

According to an advantageous development, the detection device is a camera, in particular a 3D camera. Hereby, the position of all cutting blades and all biasing elements can be particularly advantageous.

The charging unit is in claim 8 and the agricultural implement is defined in claim 9.

• 1 ein erfindungsgemäßes Schneidwerk eins erfindungsgemäßen Ladeaggregats in Seitenansicht in einem ersten Zustand;
• 2 das Schneidwerk bzw. Ladeaggregats der 1 in einem zweiten Zustand;
• 3 eine ausschnittsweise, perspektivische Ansicht des Schneidwerks bzw. Ladeaggregats.

Preferred embodiments of the invention will become apparent from the dependent claims and the description below. An embodiment of the invention will be described, without being limited thereto, with reference to the drawings. Showing:

• 1 an inventive cutting mechanism of a charging unit according to the invention in side view in a first state;
• 2 the cutting unit or loading unit of the 1 in a second state;
• 3 a fragmentary, perspective view of the cutting unit or loading unit.

The invention relates to a cutting unit of a loading unit of an agricultural implement. Furthermore, the invention relates to a loading unit of an agricultural implement with such a cutting unit and an agricultural implement with such a charging unit.

1 and 2 show a section of an agricultural implement in the area of a charging unit 1 ,

The charging unit 1 has a recording device 2 for receiving preferably combined into a swath crop 3 from a background. So shows 1 a jockey wheel 4 with which the receiving device 2 of the loading unit 1 rolls on the ground from which the crop 3 is to be included. Further shows 1 a pickup roller 5 and a hold-down 6 the receiving device 2 , The recording device 2 is also called a pickup.

The charging unit 1 has in addition to the receiving device 2 about a cutting unit 7, which cutting the using the receiving device 2 picked crop serves.

The cutting unit 7 has a conveyor drum 8th with a plurality of conveying elements 9, wherein the conveying elements 9 in the axial direction of the conveyor drum 8th seen axially spaced. In the side view of 1 . 2 is such a conveying element 9 of the conveyor drum 8th shown, which is designed as a drive plate and on the circumference a plurality of radially outwardly projecting projections or driver tines 10 having.

The cutting unit 7 also has a cutting unit 11 from several in the axial direction of the conveyor drum 8th spaced cutting blades 12 , Between every two adjacent conveyor elements 9 the conveyor drum 8th is preferably in each case such a cutting blade 12 arranged.

The cutting unit 7 also has a biasing mechanism 13 , The biasing mechanism 13 has a plurality of biasing elements 14 , with each cutting knife 12 the cutting unit 11 each a biasing element 14 the biasing mechanism 13 cooperates, namely such that one of the respective biasing element 14 provided clamping force the respective cutting blade 12 in an in 1 shifted work position shown. Contrary to this clamping force of the respective clamping element 14 is the respective cutting knife 12 from the cutting position of 1 out into an in 2 shown protective position displaced, especially if as in 1 shown a foreign body 15 in the area of the respective cutting blade 12 arrives. This can damage the cutting blade 12 avoided or a risk of damage to the cutting blade 12 be reduced.

In the in 2 shown protective position is the cutting blade 12 completely swung out of the working position. The cutting knife 12 However, it can also assume a protective position in which the cutting blade 12 only partially swung out of the working position.

Further show 1 and 2 a stripping element 16 a plurality of such stripping elements 16 having scraper unit 17 , wherein the stripping elements 16 make sure of the cutting unit 7 sliced crop can be transported away starting from the cutting unit 7, for example in the direction of an in 1 shown scratching floor 18 a loading wagon or other equipment.

The cutting unit according to the invention 7 has a detection device 19 For the cutting knife-specific position detection of all cutting blades 12 and / or the biasing elements 14 all cutting blades 12 , namely for detecting whether the respective cutting blade 12 the cutting position or the protective position occupies and / or whether the biasing element 14 of the respective cutting blade 12 occupies a position corresponding to the cutting position or one of the protective position.

One with the detection device 19 cooperating control device 20 , the integral part of the detection device 19 can be, evaluates those of the capture device 19 provided signals on the position detection of the cutting blade 12 and / or the biasing elements 14 Depending on this, it triggers control-related measures.

The control device preferably determines 20 depending on the signals provided by the detection device 19, the number of protection position receipts of the respective cutting blade is individual to the cutting blade 12 and / or the corresponding position receipts of the biasing member 14 of the respective cutting blade 12 ,

Then, when the number of protective position takings of the cutting knife 12 and / or the corresponding position receipts of the biasing member 14 of the respective cutting blade 12 is greater than a limit value, the control side is concluded that the respective cutting blade 12 is worn or has no sufficient sharpness for proper operation of the cutting unit 7 more.

Then, when it is determined that the respective cutting knife 12 is worn or has no sufficient sharpness for proper operation of the cutting unit 7 more, a warning message is automatically generated and / or automatically re-sharpening of the respective cutting blade 12 triggered.

The detection device 19 For the cutting knife-specific position detection of all cutting blades 12 and / or the biasing elements 14 all cutting blades 12 is also adapted to only a partial swinging out of a cutting blade 12 and an associated biasing element 14 from the working position. From the finding that a cutting knife 12 or a plurality of cutting blades 12 is only partially swung out of the working position or be, a decreasing cutting acuity can be derived.

In a first variant, it is possible that the control device 20 only the position of all cutting blades 12 evaluates.

In a further variant, it is possible that the control device 20 only the position of the biasing elements 14 all cutting blades 12 evaluates.

Preferred is a variant in which the control device 20 both the position of all cutting blades 12 as well as the position of all biasing elements 14 evaluates the positions and compares the positions individually to the cutting positions of the cutting knives 12 plausibility based on the detected positions of the biasing elements 14. If a detected cutting blade position deviates from the pretensioning element position, then there is a non-plausible position signal and thus a non-plausible cutting-knife-specific position detection of the respective cutting blade 12 before, which is then preferably not used on the control side.

At the detection device 19 it is a camera, preferably a 3D camera, which is a three-dimensional image of the cutting blade 12 and / or the biasing elements 14 provides.

The invention does not only relate to such a cutting unit 7 , but also a loading unit 1, which in addition to such a cutting unit 7 the receiving device 2 comprises.

Furthermore, the invention relates to an agricultural implement with such a charging unit 1 , The agricultural implement is preferably a self-loading wagon or a press. The agricultural implement may also be a pelletizer that produces pellets from the picked and cut crop.

LIST OF REFERENCE NUMBERS

1

loading system

2

recording device

3

crop

4

Tastrad

5

pick-up roller

6

Stripper plate

7

cutting

8th

conveyor drum

9

impeller

10

head Start

11

cutting unit

12

cutting blade

13

biasing mechanism

14

biasing member

15

foreign body

16

stripping element

17

scraper

18

scraper floor

19

detector

20

control device

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• DE 102014102391 A1 [0003, 0004]
• DE 202004004133 U1 [0006]

Claims (10)

Cutter (7) of a loading unit (1) of an agricultural implement, comprising a conveyor drum (8) having a plurality of spaced apart in the axial direction of the conveyor drum (8) conveying elements (9), with a cutting unit (11), the more in the axial direction of the conveyor drum ( 8) spaced cutting blades (12), wherein each cutting blade (12) of the cutting unit (11) between each two adjacent conveying elements (9) of the conveyor drum (8) is positioned, with a biasing mechanism (13) having a plurality of biasing elements (14) for each cutting blade (12) via a provided by the respective biasing member (14) clamping force in a cutting position and against this clamping force to protect against damage from the cutting position out in a protective position is displaced, characterized by a detection device (19) for the cutting knife-specific position Measuring all cutting blades (12) and / or the biasing elements (14) of all cutting blades (12), namely for detecting whether the respective cutting blade (12) the cutting position or the protective position and / or the biasing member (4) of the respective cutting blade (12) one of the cutting position or one of the protective position corresponding position occupies, a control device (20) which evaluates signals provided by the detection device (19). Cutting unit to Claim 1 , characterized in that the control device (20) individually determines the number of protective position receipts of the respective cutting blade (12) and / or the corresponding position receipts of the biasing element (14) of the respective cutting blade. Cutting unit to Claim 2 characterized in that the control means (20) automatically generates a warning message when the number of protective position takings of the respective cutting blade (12) and / or the corresponding position receipts of the biasing member (14) is greater than a threshold. Cutting unit to Claim 2 or 3 , characterized in that the control device (20), when the number of protective position receipts of the respective cutting blade (12) and / or the corresponding position receipts of the biasing member (14) is greater than a threshold value, automatically triggers a regrinding of the respective cutting blade (12) , Cutting mechanism according to one of the Claims 1 to 4 , characterized in that the control device (20) exclusively evaluates the position of all cutting blades (12). Cutting mechanism according to one of the Claims 1 to 5 characterized in that the control means (20) evaluates the position of all the cutting blades (12) and biasing members (14) and plausibility of the detected positions of the cutting blades (12) based on the detected positions of the biasing members (14). Cutting mechanism according to one of the Claims 1 to 6 , characterized in that the detection device (19) is a camera, in particular a 3D camera. Loading unit (1) of an agricultural implement, comprising a receiving device (2) for receiving cut and preferably combined into a swath crop from a substrate, and with a cutting unit (7) for cutting the picked crop, characterized in that the cutting unit ( 7) after one of Claims 1 to 7 is trained. Agricultural implement, with a charging unit (1) after Claim 8 , Agricultural implement after Claim 9 , characterized in that it is a loader wagon or a press or a pelletizer.

Images