AT519808A2 - 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

Cutting unit (7) of a loading unit (1), with a conveyor drum (8) which has a plurality of conveying elements (9) spaced in the axial direction, with a cutting unit (11) which has a plurality of cutting knives (12) spaced in the axial direction, each cutting knife ( 12) is positioned between two adjacent conveyor elements (9), with a

Preloading mechanism (13), which has a plurality of pretensioning elements (14) for pretensioning the cutting knives (12) individually for the cutting knife, each cutting knife (12) being displaceable into a cutting position via a tensioning force provided by the respective biasing element (14) and out of the cutting position counter to this tensioning force can be shifted into a protective position, with a detection device (19) for position-specific detection of all of the cutting knives

Cutting knife (12) and / or the biasing elements (14), namely for detecting whether the respective cutting knife (12) the cutting position or the protective position and / or the biasing element (4) of the respective cutting knife (12) one of the cutting position or one of the protective position assumes the corresponding position, and with a control device (20) which evaluates signals provided by the detection device (19).

(Fig. 1) / 17

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 unit and an agricultural implement with such a loading unit.

An agricultural implement such as a loading wagon or a press has a loading unit that is used to pick up harvested material, such as grass, hay or straw, combined into a swath, from a subsoil and to cut the picked up crop. A pick-up device of the loading unit, which is also referred to as a pick-up, is used to pick up the crop from the ground. A cutting unit of the loading unit is used to cut the harvested crop.

The basic structure of such a cutting mechanism is known from DE 10 2014 102 391 A1. The cutting unit thus comprises a conveyor drum with several in the axial direction

Conveyor drum spaced conveyor elements. Each conveying element is designed as a drive plate and has protruding radially on the outside relative to the drive plate

Driving tines.

Furthermore, the cutting mechanism of DE 10 2014 102 391 A1 has a cutting unit which has a plurality of cutting knives spaced apart in the axial direction of the conveying drum, wherein each cutting knife of the cutting unit is positioned between two adjacent conveying elements of the conveying drum which are spaced apart in the axial direction. The cutter also has a biasing mechanism, which can be designed as a toggle mechanism. The

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Pre-tensioning mechanism has several pre-tensioning elements for pre-tensioning the cutting knives individually.

A pretensioning element interacts with each cutting knife, a prestressing force provided by the respective pretensioning element displacing the respective cutting knife into a cutting position, the respective cutting knife being displaceable out of the cutting position into a protective position to protect it against damage from the cutting position. This occurs when foreign objects reach the area of the respective cutting knife, for example foreign objects such as stones, branches or the like that do not belong to the actual crop. The cutting knives are nevertheless subject to wear during operation.

From DE 20 2004 004 133 U1 it is known to detect the cutting knives of a cutting unit with the aid of a detection device, the detection device directly detecting the sharpness of the individual knives. The

Detection device can be designed as an optical sensor. The immediate detection of knife sharpness is only possible 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 knives can be determined more easily and reliably.

Proceeding from this, the present invention is based on the object of creating a novel cutting mechanism, a loading unit of an agricultural implement with such a cutting unit and an agricultural implement with such a loading unit.

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

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The cutting device according to the invention has a

Detection device for individual cutting knives

Position detection of all cutting knives and / or the

Prestressing elements of all cutting knives, namely for detecting whether the respective cutting knife occupies the cutting position or the protective position and / or the prestressing element of the respective cutting knife in a position corresponding to the cutting position or a protective position. Furthermore, the cutting unit has a control device which evaluates signals provided by the detection device.

In the cutting device according to the invention, it is recorded individually for the cutting knife whether the respective cutting knife assumes the cutting position or the protective position and / or whether the prestressing element of the respective cutting knife assumes a position corresponding to the cutting position or a protective position. This

Position detection is evaluated by the control device. In particular, wear on the cutting knives and thus the sharpness thereof can be concluded from this. This allows a simpler and more reliable determination of the sharpness of cutting knives on a cutting device than is possible with the prior art.

According to a further development, the control device determines the number of protective position receipts of the respective cutting knife and / or the corresponding position receipts of the prestressing element of the respective cutting knife

Cutting knife. Then when the number of

Protection position revenue of the respective cutting knife and / or the corresponding position revenue of the pretensioning element is greater than a limit value, it is preferably provided that the control device automatically generates a warning message and / or automatically regrinding the respective

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Cutting knife triggers. This allows a particularly advantageous and reliable determination of the sharpness of the cutting knife. If the number of protective positions taken by a cutting knife and / or the corresponding positions of the pretensioning element exceeds the limit value, a cutting knife that is no longer sufficiently sharp is inferred and a corresponding measure is triggered on the control side.

According to a first variant, the control device only determines the position of all cutting knives. According to a second variant, the control device determines the position of all cutting knives and all prestressing elements and checks the plausibility of the detected positions of the cutting knives on the basis of the detected positions of the prestressing elements. The plausibility check of the cutting knife positions depending on the corresponding positions of the prestressing elements is particularly preferred in order to make the determination of the sharpness of cutting knives more reliable.

According to an advantageous development, the

Detection device a camera, in particular a 3D camera. The position of all cutting knives and all prestressing elements can hereby take place particularly advantageously.

The loading assembly is defined in claim 8 and the agricultural implement is defined in claim 9.

Preferred developments of the invention result from the subclaims and the following description. An embodiment of the invention is explained in more detail with reference to the drawing, without being limited to this. It shows:

Figure 1 is a side view of a cutting unit according to the invention of a loading unit according to the invention in a first state;

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FIG. 2 shows the cutting unit or loading assembly of FIG. 1 in a second state;

Fig. 3 is a partial, 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 device and an agricultural implement with such a loading unit.

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

1.

The loading unit 1 has a receiving device 2 for picking up crop 3, preferably combined into a swath, from a subsoil. 1 shows a feeler 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 picked up. 1 shows a take-up roller 5 and a

Hold-down 6 of the receiving device 2. Die

Pickup device 2 is also referred to as a pickup.

In addition to the receiving device 2, the loading unit 1 has a cutting unit 7, which is used to cut the harvested crop picked up by means of the receiving device 2.

The cutting unit 7 has a conveyor drum 8 with a plurality of conveyor elements 9, the conveyor elements 9 being axially spaced apart when viewed in the axial direction of the conveyor drum 8. In the side view of FIGS. 1, 2, such a conveying element 9 of the conveying drum 8 is shown, which is used as a driving disk

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• · ·· • · • * is carried out and has several radially outwardly projecting projections or driver tines 10 on the circumference.

The cutting unit 7 also has a cutting unit 11 comprising a plurality of cutting knives 12 spaced apart in the axial direction of the conveyor drum 8, between two adjacent ones in each case

Conveying elements 9 of the conveyor drum 8 are preferably each arranged such a cutting knife 12.

The cutting unit 7 also has a

Pre-tensioning mechanism 13. The pre-tensioning mechanism 13 has a plurality of pre-tensioning elements 14, whereby with each cutting knife 12 of the cutting unit 11 a pre-tensioning element 14 of the pre-tensioning mechanism 13 interacts, namely in such a way that a tensioning force provided by the respective pre-tensioning element 14 converts the respective cutting knife 12 into one in FIG. 1 shown working position relocated. Contrary to this clamping force of the respective clamping element 14, the respective cutting knife 12 can be shifted out of the cutting position of FIG. 1 into a protective position shown in FIG. 2, in particular if, as shown in FIG. 1, a foreign body 15 is in the area of the respective cutting knife 12 arrives. This prevents damage to the cutting knife 12 or reduces the risk of damage to the cutting knife 12.

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

Working position is pivoted out.

1 and 2 also show a stripping element 16 of a stripping unit 17 having a plurality of such stripping elements 16, the stripping elements 16 ensuring that the cutting mechanism

7/17 ········ ·· cut crop can be transported away from the cutting unit 7, for example in the direction of a scraper floor 18 shown in FIG. 1 of a loading wagon or other device.

The cutting unit 7 according to the invention has a

Detection device 19 for cutting knife individual

Position detection of all cutting knives 12 and / or the

Preloading elements 14 of all cutting knives 12, namely for

Detection of whether the respective cutting knife 12 assumes the cutting position or the protective position and / or whether the prestressing element 14 of the respective cutting knife 12 assumes a position corresponding to the cutting position or a protective position.

A cooperating with the detection device 19

Control device 20, which is an integral part of

Detection device 19 can be evaluated by the

Detector 19 signals provided via the position detection of the cutting knife 12 and / or the biasing elements 14 and depending on this triggers control-side measures.

Depending on the signals provided by the detection device 19, the control device 20 preferably determines the number of protective position intakes of the respective cutting knife 12 and / or the corresponding positional intakes of the prestressing element 14 of the respective cutting knife 12 individually for the cutting knife.

Then when the number of protective position receipts of the

Cutting knife 12 and / or the corresponding position income of the biasing element 14 of the respective cutting knife 12 is greater than a limit value, it is concluded on the control side that the respective cutting knife 12 is worn or none

8/17 * ········ ·· • ·· · · · »« · · · ·· · · • · · · · · • · · · · · sufficient sharpness for correct operation of the cutting unit 7 has more.

If it is determined that the respective cutting knife 12 is worn out or no longer has sufficient sharpness for proper operation of the cutting unit 7, a warning message is automatically generated and / or a regrinding of the respective cutting knife 12 is triggered automatically.

The detection device 19 for cutting knife-specific position detection of all cutting knives 12 and / or the pretensioning elements 14 of all cutting knives 12 is also set up to detect a partial swiveling out of a cutting knife 12 or an associated pretensioning element 14 from the working position. From the determination that a cutting knife 12 or a plurality of cutting knives 12 is or are only partially pivoted out of the working position, a decreasing cutting sharpness can be derived.

In a first variant, it is possible that the

Control device 20 exclusively evaluates the position of all cutting knives 12.

In a further variant, it is possible that the

Control device 20 exclusively evaluates the position of the prestressing elements 14 of all cutting knives 12.

A variant is preferred in which the

Control device 20 evaluates both the position of all cutting knives 12 and the position of all prestressing elements 14 and compares the positions individually for the cutting knife in order to plausibility check the detected positions of the cutting knives 12 on the basis of the detected positions of the prestressing elements 14. Deviates a detected cutting knife position from

9/17 ···· ···· • · · · · · • · · · • · · · • ·· · · «from the pretensioning element position, there is a non-plausible position signal and thus a non-plausible position-specific detection of the respective cutting knife 12 which is then preferably not used on the control side.

The detection device 19 is a camera, preferably a 3D camera, which provides a three-dimensional image of the cutting knives 12 and / or the prestressing elements 14.

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

The invention further relates to an agricultural

Implement with such a loading unit 1. The agricultural implement is preferably a loading wagon or a press. The agricultural implement can also be a pelletizer that produces pellets from the harvested and cut crop.

In summary, an embodiment of the invention can be represented as follows:

Cutting unit 7 of a loading unit 1, with a conveyor drum 8 which has a plurality of conveying elements 9 spaced in the axial direction, with a cutting unit 11 which has a plurality of cutting knives 12 spaced in the axial direction, each cutting knife 12 being positioned between two adjacent conveying elements 9, with one

Preload mechanism 13, which has a plurality of pretensioning elements 14 for pretensioning the cutting knives 12/17 individually for the cutting knife, each cutting knife 12 being displaceable into a cutting position via a prestressing force provided by the respective prestressing element 14 and counter to this prestressing force from Cutting position can be shifted out into a protective position, with a detection device 19 for cutting knife-specific position detection of all

Cutting knife 12 and / or the pretensioning elements 14, namely for detecting whether the respective cutting knife 12 assumes the cutting position or the protective position and / or the pretensioning element 4 of the respective cutting knife 12 a position corresponding to the cutting position or a protective position, and with a control device 20, evaluates the signals provided by the detection device 19.

11/17 ·· ·· · ···· ···· ·· ······ ·· · · · · · 4 4 44 ·· «· · · 4 · · ···

444 ·· «··· ·· 44 ··· · 4 ·· ··

Reference list

Loading unit

Reception facility

Crop

Feeler wheel

Take-up roller

Hold-down

Cutting unit

Conveyor drum

Conveyor element

head Start

Cutting unit

Cutting knife

Preload mechanism

Preloading element

foreign body

Wiper element

Scraper unit

Scraper floor

Detection device

Control device / 17 ·· ·· · ···· ···· ·· ····· ·· ·· • · · · · ··· · · ··· · · · · · • · · · · · · ·

Claims:

Claims (10)

1. Cutting unit (7) of a loading unit (1) of an agricultural implement, with a conveyor drum (8) which has a plurality of conveying elements (9) spaced apart in the axial direction of the conveying drum (8), with a cutting unit (11) which has a plurality in the axial direction of the Has conveying drum (8) with spaced cutting knives (12), each cutting knife (12) of the cutting unit (11) being positioned between two adjacent conveying elements (9) of the conveying drum (8), with a Preload mechanism (13), which has a plurality of pretensioning elements (14) for pretensioning the cutting knives (12) for each cutting knife, each cutting knife (12) being displaceable into a cutting position by means of a pretensioning force provided by the respective pretensioning element (14) and against this pretensioning force for protection against damage can be shifted out of the cutting position into a protective position, characterized by a detection device (19) for the position-specific detection of all cutting knives (12) and / or the pretensioning elements (14) of all cutting knives (12), namely for detecting whether the respective cutting knife (12) the cutting position or the Protective position and / or the biasing element (4) of the respective cutting knife (12) assumes a position corresponding to the cutting position or a protective position, a control device (20) which is controlled by the Detection device (19) evaluates signals provided. 2. Cutting device according to claim 1, characterized in that the control device (20) cutting knife individual the number of protective position intakes of the respective Cutting knife (12) and / or the corresponding 13/17 ·· ·· · ···· ···· · »····· ·· ··« · · · · ··· · · ····· · · * ··· · · ··· Position income of the biasing element (14) of the respective cutting knife determined. 3. Cutting device according to claim 2, characterized in that the control device (20) automatically generates a warning message when the number of protective position intakes of the respective cutting knife (12) and / or the corresponding positional intakes of the prestressing element (14) is greater than a limit value . 4. Cutting device according to claim 2 or 3, characterized in that the control device (20) automatically when the number of protective position intakes of the respective cutting knife (12) and / or the corresponding position intakes of the biasing element (14) is greater than a limit value Regrinding of the respective cutting knife (12) is triggered. 5. Cutting device according to one of claims 1 to 4, characterized in that the control device (20) evaluates only the position of all cutting knives (12). 6. Cutting device according to one of claims 1 to 5, characterized in that the control device (20) the position of all cutting knives (12) and all Prestressing elements (14) are evaluated and the detected positions of the cutting knives (12) are checked for plausibility on the basis of the detected positions of the prestressing elements (14). 7. Cutting device according to one of claims 1 to 6, characterized in that the detection device (19) 14/17 ···· ···· ·· • · · · • · · * ·· · · · · • · · · · · ··· · · • · · · · 0 ·· «• · · · · ··· ·· · # »·· · ··· ·· Camera, especially a 3D camera. 8. loading unit (1) of an agricultural implement, with a receiving device (2) for receiving cut and preferably combined into a swath from a crop, and with a cutter (7) for cutting the picked crop, characterized in that Cutting device (7) is designed according to one of claims 1 to 7. 9. Agricultural implement, with a loading unit (1) according to claim 8. 10. Agricultural implement according to claim 9, characterized in that the same is a loading wagon or a press or a pelletizer. 15/17