DE102020115727A1 - Self-loading wagons with an automatic transport floor control and a load compartment cover - Google Patents

Abstract

The invention relates to a loading wagon 100 with a control of the transport floor 21 according to the preamble of claim 1 as well as a method for controlling the transport floor 21 of a loading wagon 100.Der such loading wagons are used for harvesting stalk or leaf material, which after mowing usually swath-shaped is displayed on an agriculturally used floor area and is then picked up and processed by means of the loading wagon. Such loading wagons generally have a transport floor 21 in the form of a scraper floor 47 and are partially equipped with an automatic scraper floor control. The disadvantage of known scraper floor controls is that the required sensors are coupled either to the front wall or to an extension of the front wall. Such a sensor device 30 consequently only starts the scraper floor drive when crop 49 presses against the sensor in the area of the end wall 24. It is also particularly problematic and / or expensive in the case of loading wagons 100 with a pivotable end wall 24. In order to eliminate the disadvantages described, it is proposed to equip the loading space 20 with a loading space cover 27 and to provide a sensor device 30 which has a position and / or The voltage change of the loading space cover 27 is determined in order to automatically control the transport device 21 or the scraper floor 47 on this basis.

Description

The invention relates to a loading wagon with a control of a transport floor, in particular a scraper floor, according to the preamble of claim 1 and a method for controlling the transport floor of a loading wagon.

Such loading wagons are used for harvesting stalk or leaf material, which after mowing is usually swath-shaped on an agriculturally used floor area and is then picked up and processed by means of the loading wagon.

• - eine Aufnahmevorrichtung, mit Hilfe derer während eines Beladevorgangs des Ladewagens Erntegut aufnehmbar ist;
• - einen Förderrotor, zum Weitertransport des von der Aufnahmeeinrichtung aufgenommenen Ernteguts;
• - einen Laderaum zur Aufnahme des Ernteguts, wobei der Laderaum zwei Seitenwände, eine Stirnwand, eine Heckwand und einen Kratzboden umfasst;
• - eine Sensor-Einrichtung zur Erfassung des Beladezustandes des Laderaums;
• - eine mit der Sensor-Einrichtung zusammenwirkende Steuerungseinrichtung zum Antrieb der Transporteinrichtung.

Out DE 41 22 024 A1 a generic loading wagon is known, comprising:

• - A pick-up device, with the help of which crop can be picked up during a loading process of the loading wagon;
• - A conveyor rotor for further transport of the crop picked up by the pick-up device;
• - A loading space for receiving the crop, the loading space comprising two side walls, an end wall, a rear wall and a scraper floor;
• - A sensor device for detecting the loading condition of the cargo space;
• - A control device interacting with the sensor device for driving the transport device.

As a sensor device of the DE 41 22 024 A11 known loading wagons are used for pressure sensors which are arranged on the end wall and / or on its extension. If the pressure exerted on the pressure transducer by the harvested crop exceeds a preset value, a switching element is actuated which switches on a scraper floor drive via a switch. If the value falls below the preset value, the floor conveyor drive is switched off again.

The control described can also be referred to as an automatic scraper floor control. The disadvantage of this scraper floor control is that the pressure sensor is coupled either to the end wall or to an extension of the end wall. Such a sensor device consequently only starts the scraper floor drive when the crop presses against the sensor in the area of the front wall. Attaching a sensor to the end wall is particularly disadvantageous if the end wall can be pivoted about a lower axis of rotation. Equipping a loading wagon with a swiveling bulkhead has several advantages. In particular, the loading volume can be increased by swiveling out the front wall. Furthermore, the transport movement of the crop in this direction can be supported with a pivotable front wall, which is pivoted in the direction of the rear of the vehicle when the loading wagon is unloaded.

The object of the invention is to eliminate the disadvantages described and to propose an improved control for driving a transport floor. The improved control should also be simple in structure and easily adaptable to different harvesting conditions. The object of the invention is also to propose an improved method for controlling the transport floor drive.

This object is achieved by a loading wagon having the features of claim 1 and a method having the features of claim 14.

The transport device of the loading wagon can be a conveyor belt, a scraper floor or some other means with which the crop can be conveyed from front to back in the longitudinal direction of the loading wagon. As a rule, the transport device of a loading wagon is formed by one, two or more scraper floors. A scraper floor consists of two chain strands that are moved by a pocket wheel on the load-bearing side. Carrying bars are attached to two evenly driven chains at regular intervals to transport the load. Today, scraper floors are almost exclusively driven by hydraulic motors in newer machines, whereas in the past a mechanical drive via a ratchet system was common. The basic principle of a control system, in which a scraper floor is started when a predefined condition is met, is also generally referred to as an automatic scraper floor control or automatic loading system. Irrespective of the fact that the transport device is referred to below as a scraper floor, the use of other transport devices, for example a conveyor belt running around the floor, is not excluded.

According to the invention, the loading wagon comprises an automatic scraper floor control with a loading space cover to which a sensor device is directly or indirectly coupled. A sensor device can also be understood as a signal device. It is important that the sensor or signal device is suitable for detecting a change in a parameter of the loading space cover and for reporting it to the scraper floor control. Such a loading space cover with an integrated sensor system can also be referred to as an intelligent loading space cover.

The crop picked up by the pick-up device and conveyed into the hold initially fills the cargo space in the front area in the direction of travel. If the filling continues, the crop continues to rise in the loading space until it finally contacts the loading space cover. If the load compartment cover is only resting on the load compartment, it can slide upwards or be pushed up. If the load compartment cover is fixed, the rising crop generates tension in the load compartment cover. Furthermore, it is also possible for the loading space cover to be lifted completely or in partial areas from the feed and at the same time to build up tension.

Regardless of the specific design, a change in position and / or voltage of the cargo space cover can be detected by means of the sensor device provided. All types of sensors by means of which the change in position and / or voltage can be measured can therefore be considered. On the basis of the detected change, a corresponding control signal can be transmitted to the control device for driving the transport device. The sensor device preferably comprises at least one mechanical sensor and / or an optical sensor and / or an acoustic sensor and / or an incremental sensor. The selection of the sensor depends on which parameter, which changes due to the rising crop, is to be measured in or on the loading space cover.

If, for example, the position of the cargo space cover changes due to lifting or bulging of the same, this change in position can be measured with an optical and / or acoustic sensor. The optical sensor can be, for example, a light barrier, and the acoustic sensor can be an ultrasonic sensor.

Of course, other types of sensors can also be considered, such as pressure sensors which in particular measure a hydraulic pressure. As an alternative or in addition to continuously operating measuring systems, incremental encoders can also be used. Incremental encoders are sensors for detecting changes in position (linear) or changes in angle (rotating), which can detect the distance and direction of travel or angle change and direction of rotation. Incremental sensors that detect a rotational movement are also referred to as incremental rotary encoders, rotary pulse encoders or generally as rotary encoders. The sensors can in particular work mechanically, electrically or electromechanically.

A rope, a lever, a lever linkage or a flexible element, for example one or more springs, can be used to actuate a mechanical sensor. The sensors can be used on the sensor device according to the invention both alone and in combination with the same or different sensors.

In a preferred embodiment, the sensor device is arranged outside the cargo space. This prevents the flow of crops in the hold. Furthermore, a sensor device arranged outside the cargo space can be protected from damage and is more easily accessible for maintenance and / or adjustment work.

The loading space cover can be held by at least one traction means, preferably guided outside the loading space, so that a change in position or tension of the at least one traction means can be detected by means of the sensor device. The traction means can be, for example, ropes that hold and / or tension the cargo space cover. In this case, the sensor device is based on the fact that the holding ropes are pulled or tensioned. Such a design is robust, inexpensive and less prone to failure.

The at least one traction means is preferably mounted on an outside of a side wall of the loading wagon via a tensioning device. The clamping force can be adjusted by the clamping device and the sensor device can be easily adapted to different use or harvesting conditions. Furthermore, when using not just one but several traction devices, load peaks can be smoothed and the tension force prevailing in the cargo space cover can be leveled out.

In a preferred embodiment, the tensioning device comprises a fixed bearing and a floating bearing, the fixed bearing and the floating bearing preferably being coupled to one another via at least one, most preferably several, spring elements. The fixed bearing thus forms an anchor point for the clamping device. The floating bearing moves under load relative to the fixed bearing. This relative movement represents a measurable variable that is easy to record.

An optionally usable spring element can be used to generate a preload. Furthermore, the spring element can serve to adapt the clamping force to the harvesting conditions. In the case of voluminous, light harvested material, such as straw, the spring element can, for example, have a large spring force, so that the crop rising in the hold is additionally compressed by the strong spring element. In contrast, in the case of heavy crops, such as wet grass, a spring with a low spring force can be provided, so that even a low pressure against the loading space cover is sufficient to move the floating bearing. This movement can are then detected by means of a sensor, so that when a predefined value is reached, a control signal for starting the scraper floor can be triggered.

The spring element or elements can preferably be dismantled so that the spring force of the tensioning device can be adjusted by means of the number of spring elements and / or their spring constant. The clamping device can thus be easily adapted to different harvesting conditions.

The sensor device can be attached independently of the tensioning device and can detect the change in position of the floating bearing relative to the fixed bearing from an independent point, for example from a fastening point on the outer wall of the loading wagon. In a preferred embodiment, it is fixed at a fixed point on the fixed bearing. It is also preferred that the sensor device has a movable lever which is coupled to the floating bearing via an actuating rod. If the floating bearing thus moves, the moving lever of the sensor, which can be a rotary encoder, for example, is also moved via the actuating rod.

The at least one spring element can be pretensioned by a pretensioning device. The pretensioning device can be formed by a thread. The device can be designed in such a way that the spring elements are tensioned individually or together via a coupling element.

The cargo space cover is preferably made from a tarpaulin or a net. Both a tarpaulin and a net are flexible and, if a close-meshed net is used, they are so dense that harvested crops cannot get out of the hold, for example by the wind. As an alternative to a flexible loading space cover, however, a rigid cover plate, for example made of plastic, or a flap-like loading space cover can in principle also be used. It is only essential that a change in position and / or voltage in the cargo space cover can be detected by means of one or more suitable sensors.

It is particularly preferred that the cargo space cover covers the cargo space to at least 50%, preferably 90%, most preferably completely. The larger the cover area, the less important it is at which point the crop rising in the loading space presses against the cover and the less likely it is that the crop will push up at a point where no loading space cover is provided. Since the crop in the loading wagon is usually conveyed into the loading space through a conveyor channel located below the front wall, the crop initially rises in the area of the front wall and initially loads the loading space cover in a front area of the loading space. Against this background, said 50% cargo space cover preferably relates to the front half of the cargo space. Similarly, with 90% coverage, the front 90% of the cargo space is preferably covered.

In a particularly preferred embodiment, the loading space cover is not coupled to the front wall of the loading wagon. As a result, a pivoting movement of the front wall below the cargo space cover can be carried out in a very simple manner with the position of the cargo space cover unchanged. In contrast to a loading wagon, in which a load space cover is provided, but this is coupled to the front wall, the position of the front wall does not affect the position or tension in the load space cover. This considerably simplifies the automatic scraper floor control and at the same time can be used universally on loading wagons with rigid and pivoting end walls.

• - der Ladewagen mittels der Aufnahmevorrichtung Erntegut aufnimmt und anschließend mittels des Förderrotors in den Laderaum fördert,
• - das im Laderaum aufsteigende Erntegut von der Sensoreinrichtung erfasst wird,
• - die Sensoreinrichtung einen Steuerbefehl an die Steuerungseinrichtung überträgt,
• - die Steuerungseinrichtung den Antrieb der Transporteinrichtung steuert,
• - mittels der Sensoreinrichtung eine Positions- und/oder Spannungsänderung einer den Laderaum des Ladewagens abdeckenden Laderaum-Abdeckung erfasst wird.

The object of the invention is also achieved by a method for controlling a loading wagon in which

• - the loading wagon picks up the crop by means of the pick-up device and then conveys it into the loading space by means of the conveyor rotor,
• - the crop rising in the hold is detected by the sensor device,
• - the sensor device transmits a control command to the control device,
• - the control device controls the drive of the transport device,
• - A change in position and / or voltage of a loading space cover covering the loading space of the loading wagon is detected by means of the sensor device.

In contrast to known automatic scraper floor controls, the method according to the invention does not measure a change in position and / or voltage on the front wall of the loading wagon, but rather in or on the loading space cover. This results in several advantages, such as, for example, the universal applicability of the method already described above for loading wagons with a rigid end wall and for loading wagons with a movable end wall.

In a preferred embodiment of the method, the change in position and / or voltage of the cargo space cover outside the cargo space is detected.

Furthermore, it can be provided that the change in position and / or voltage is not measured directly on the cargo space cover, but rather the change in position and / or voltage is first transmitted to one or more coupling elements and the sensor device reports the change in position and / or voltage the coupling elements. The coupling elements can be tension cables connected to the cargo space cover, for example.

Further measures improving the invention are illustrated in more detail below with the description of preferred exemplary embodiments of the invention with reference to the figures.

• 1 zeigt einen Ladewagen in einer perspektivischen Ansicht,
• 2 zeigt den Ladewagen aus 1 in einer Seitenansicht,
• 3 zeigt den Ladewagen aus 1 in einer Draufsicht mit einer Schnittlinie C - C,
• 4 zeigt den Ladewagen aus 1 gemäß der Schnittlinie C - C,
• 5 zeigt den vorderen Bereich des Ladewagen-Laderaums in einer perspektivischen Darstellung,
• 6 zeigt einen Ausschnitt D aus 5,
• 7 zeigt die Spannvorrichtung der Laderaum-Abdeckung.

The figures show:

• 1 shows a loading wagon in a perspective view,
• 2 shows the loading wagon 1 in a side view,
• 3 shows the loading wagon 1 in a plan view with a cutting line C - C ,
• 4th shows the loading wagon 1 according to the cutting line C - C ,
• 5 shows the front area of the loading wagon loading space in a perspective view,
• 6th shows a section D. out 5 ,
• 7th shows the tensioning device of the load compartment cover.

The same or similar elements can be provided with the same or similar reference symbols in the following figures. Furthermore, the figures of the drawing, their description and the claims contain numerous features in combination. It is clear to a person skilled in the art that these features can also be considered individually or they can be combined to form further combinations not described in greater detail here. The invention also expressly extends to those embodiments which are not given by combinations of features from explicit references back to the claims, with which the disclosed features of the invention can be combined with one another as required, insofar as this is technically sensible. The exemplary embodiments shown in the figures are therefore only of a descriptive nature and are not intended to restrict the invention in any form.

The terms used below: "upper", "top", "lower", "left" or "right" refer to the arrangement of the loading wagon in the direction of travel shown in the drawing.

1 shows a loading wagon 100 in a perspective view. The loading wagon 100 includes a drawbar 38 , a chassis 39 that from a landing gear 40 is carried, a receiving device 10 , a pressing device with a conveyor rotor 11th and a hold 20th . The hold 20th is essentially cuboid and is supported by the side walls 22nd , 23 , the front wall 24 , the rear wall 25th , the floor 26th and the load compartment cover 27 limited. The rear wall 25th is around an axis of rotation 42 pivotable.

The floor 26th of the hold 20th comprises a transport device 21 . In the illustrated embodiment, it is the transport device 21 a known scraper floor 47 (see. 4th ).

The cargo hold cover 27 comprises in the illustrated embodiment a rectangular tarpaulin 36 those by support struts 48 is reinforced and kept in contour.

Alternative to a tarpaulin 36 a network could also be provided. In the illustrated embodiment, the cargo space cover is on the side walls 22nd , 23 coupled and not to the front wall 24 . The front wall 24 can rather be underneath the load compartment cover 27 around an axis of rotation 37 from a forward position A. to a rear position B. be swiveled (cf. 4th ). The cargo hold cover 27 covers the hold 20th largely completely. Only the area immediately in front of the rear wall ( 25th ) is not covered by the tarpaulin ( 36 ) covered.

The crop pile forms in the hold 20th to the rear wall 25th not a vertical wall, but rather falls away a little. As a rule, therefore, remains even if the crop pile passes through the scraper floor 47 up to the rear wall 25th , or up to any in front of the rear wall 25th attached conveyor rollers, has been conveyed in the upper area in front of the rear wall 25th a certain amount of freedom. Since forage losses are less likely in this area during transport journeys, an alternative to a full loading space cover can be used 27 partial coverage, for example to an extent of 50% or 90%, can also be provided. Even if the cargo space is only partially covered 20th however, is the sensor device 30th to the load compartment cover 27 coupled.

When harvesting, the loading wagon takes with the pick-up device 10 Crop 49 off the ground. The cradle 10 directs the crop 49 to the feed rotor 11th further. This takes over with the on the conveyor rotor 11th attached press tines the crop 49 , it leads through a press channel 43 and to achieve a desired cutting length, through between the cutting knife.

4th shows a longitudinal section according to FIG 3 shown cutting line C - C . The front wall 24 is in the swiveled-out position at the start of the harvest A. . The rising crop 49 initially forms over the press channel 43 a pile and rises as the ingestion of crop increases 49 up on.

The one above the press channel 43 ascending crop 49 increasingly condenses due to its own weight, which reduces the power requirement of the conveyor rotor 11th increases. As the harvest continues, the conveyor rotor pushes 11th further crop 49 through the press channel 43 and presses the one in the hold 20th crop pile located upwards. Reaches the rising crop 49 the load compartment cover 27 it exercises one from below against the cargo hold cover 27 Acting force F. out. In the illustrated embodiment, the cargo space cover 27 by means of traction means 12th , which are steel cables, stretched. The one on the cargo hold cover 27 acting force F. is thus transferred to the traction mechanism 12th . The traction mechanism 12th are via a common point of articulation 13th with a jig 14th connected.

the 5 and 7th show how the clamping device works 14th and one to the jig 14th coupled sensor device 30th in detail. The jig 14th includes one on a construction support 41 the side wall 22nd attached fixed bearing 16 . About a guided tour 44 is the fixed camp 16 to a floating bearing 17th coupled. The fixed camp 16 further comprises a pretensioning device 29 . In the illustrated embodiment, this is made up of five eyebolts 45 educated. The eyebolts 45 are about the spring element 28 , which in the example shown are each five times two tension springs 46 acts with the floating bearing 17th connected. By screwing in the eyebolts 45 in the fixed camp 16 its effective length can be set and thus one on the tension springs 46 , or the spring element 28 overall, and the cargo compartment cover 27 acting preload force can be generated.

The strength of the preload force and the spring constant of the spring element 28 depends on the number and spring rate of the individual tension springs 46 and can be easily adapted to the respective harvesting requirements by installing and removing.

Under load, that means: when the crop is being harvested 49 against the load compartment cover 27 is pressed and this is tensioned and / or lifted, pull the traction device 12th the floating bearing 17th against the force of the spring element 28 up. The floating bearing 17th relies on the guide 44 away. The floating bearing 17th is with an operating rod 18th connected, which is thus under load together with the floating bearing 17th moved upwards. The operating rod 18th is on a lever 19th an incremental or angle sensor 34 coupled. The angle sensor 34 forms the sensor device in the illustrated embodiment 30th .

The operating rod operates under load 18th thus the lever 19th the sensor device 30th . This measures the change in angle of the lever 19th and transmits the measured value to the control device 35 . The control device 35 generates a control signal for the drive of the scraper floor based on the measured value 47 . The control can be a pure on / off control. That means: If a predefined value is exceeded, the scraper floor becomes 47 started; if the value falls below this, the scraper floor is activated 47 stopped. However, it is also possible to incorporate further parameters into the control, for example control of the scraper floor speed or delayed switching on / off. It is also possible to use the automatic control of the scraper floor 47 to be overridden by manual intervention by the operator, in particular manual switching on or off.

When the scraper floor drive is switched on, this is done over the press channel 43 crop located 49 so long or so far in the direction of the rear wall until the voltage and / or position change of the load compartment cover 27 reaches a predefined value, which acts as a signal for switching off the scraper floor 47 is being used. In the further course of the harvest, the resulting free space above the press channel is used 43 further crop 49 promoted until this again hits the cargo hold cover 27 presses and the sensor device 30th the control device 35 another signal to start the scraper floor 47 transmitted.

Analogously to known automatic scraper floor controls, the scraper floor is thus also used in the automatic scraper floor control according to the invention 47 then started or stopped when the sensor device 30th the control device 35 a predefined measured variable is transmitted. In contrast to the known scraper floor controls, however, the measurement location is not on the front wall 24 , but to the load compartment cover 27 coupled. This is particularly advantageous when it comes to the front wall 24 , as in the exemplary embodiment is an end wall around an axis of rotation 37 is pivotable. A swiveling front wall has the advantage that it provides additional loading volume on the one hand and on the other hand when unloading by swiveling from the front position A. to a rear position B. the scraper floor 47 in promoting the crop 49 to below the around the axis of rotation 42 raised rear wall 25th arranged discharge opening supported.

In the illustrated embodiment, the sensor device is 30th using the example of one on at least one side wall 22nd , 23 of the loading wagon 100 attached jig 14th shown. Alternatively or in addition to this, a sensor device can be used 30th however, they are basically attached to all positions that are used to measure a change in voltage and / or position of the cargo space cover 27 are suitable. For example, an angle sensor could also be installed directly at the transition from the load compartment cover 27 to the side walls 22nd and or 23 to be appropriate. Or, as an alternative to an angle sensor, an optical or acoustic sensor above the cargo space cover could be used 27 be used to bulge or lift the load compartment cover 27 to detect. The attachment of an optical sensor 32 or acoustic sensor 33 is in 5 and 6th indicated.

It is essential to the method according to the invention that there is a measurement of a change in position and / or voltage of the cargo space cover 27 includes.

List of reference symbols

10

Cradle

11th

Conveyor rotor

12th

Traction means

13th

Pivot point

14th

Jig

15th

Outside

16

Fixed bearing

17th

Floating bearing

18th

Operating rod

19th

lever

20th

Hold

21

Transport device / scraper floor

22nd

Side wall

23

Side wall

24

Front wall

25th

Rear wall

26th

floor

27

Load compartment cover

28

Spring element

29

Pretensioning device

30th

Sensor device

31

-

32

Optical sensor (light barrier)

33

acoustic sensor (ultrasonic sensor)

34

Incremental sensor (angle sensor)

35

Control device

36

Plans

37

Axis of rotation (of 24)

38

Drawbar

39

chassis

40

landing gear

41

Superstructure

42

Axis of rotation (of 25)

43

Press channel

44

guide

45

Eyebolt

46

Tension spring

47

Scraper floor

48

Support struts

49

Crop

100

Loading wagons

A.

front position (of 24)

B.

rear position (of 24)

C-C

cut

D.

Cutout

R.

Direction of travel

F.

power

QUOTES INCLUDED IN THE DESCRIPTION

This list of the documents listed by the applicant was 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.

Patent literature cited

• DE 4122024 A1 [0003]
• DE 4122024 [0004]

Claims (16)

An agricultural loading wagon (100) for harvesting stalk and leaf material, comprising: - a receiving device (10) with the aid of which harvested material can be picked up during a loading process of the loading wagon (100); - A conveyor rotor (11) for further transport of the crop picked up by the pick-up device; - A loading space (20) for receiving the crop, the loading space (20) comprising two side walls (22, 23), an end wall (24), a rear wall (25), a floor (26) with a transport device (21); - A sensor device (30) for detecting the loading condition of the loading space (20); - A control device (35) cooperating with the sensor device (30) for driving the transport device (21), characterized in that - the loading space (20) comprises a loading space cover (27) and - by means of the sensor device (30) a The change in position and / or voltage of the cargo space cover (27) can be detected. Loading wagon (100) Claim 1 , characterized in that the sensor device (30) has at least one mechanical sensor and / or an optical sensor (32) and / or an acoustic sensor (33) and / or an incremental sensor (34) and / or a pressure sensor and / or an electrical one Includes sensor. Loading wagon (100) Claim 1 or 2 , characterized in that the sensor device (30) is arranged outside the cargo space (20). Loading wagons (100) according to one of the Claims 1 until 3 , characterized in that the loading space cover (27) is held by at least one pulling means (12), preferably guided outside the loading space (20), and by means of the sensor device (30) a change in position or tension of the at least one pulling means (12) is detectable. Loading wagon (100) Claim 4 , characterized in that the traction means (12) exerts a pretensioning force on the cargo space cover (27). Loading wagons (100) according to one of the Claims 1 until 5 , characterized in that the at least one traction means (12) is mounted on an outside (15) of a side wall (22, 23) via a tensioning device (14). Loading wagons (100) according to one of the Claims 1 until 6th , characterized in that the clamping device (14) comprises a fixed bearing (16) and a floating bearing (17), the fixed bearing (16) and floating bearing (17) preferably being coupled to one another via at least one, most preferably several, spring elements (28). Loading wagon (100) Claim 7 , characterized in that the spring element (28) or the spring elements (28) can be dismantled and the spring force of the tensioning device (14) can be adjusted by means of the number of spring elements (28) and / or their spring constant. Loading wagon (100) Claim 7 or 8th , characterized in that the sensor device (30) is fixed on the fixed bearing (16) and has a movable lever (19) which is coupled to the movable bearing (17) via an actuating rod (18). Loading wagons (100) according to one of the Claims 7 until 9 , characterized in that the at least one spring element (28) can be prestressed by a prestressing device (29). Loading wagons (100) according to one of the Claims 1 until 10 , characterized in that the cargo space cover (27) is made from a tarpaulin (36) or a net. Loading wagons (100) according to one of the Claims 1 until 11th , characterized in that the loading space cover (27) covers the loading space (20) to at least 50%, preferably 90%, most preferably completely. Loading wagons (100) according to one of the Claims 1 until 12th , characterized in that the cargo space cover (27) is not coupled to the end wall (24) and a pivoting movement of the end wall (24) below the cargo space cover (27) can be carried out with the position of the cargo space cover (27) unchanged. Method for controlling a loading wagon (100) according to one of the Claims 1 until 13th - The loading wagon (100) picks up the crop by means of the receiving device (10) and then conveys it into the loading space (20) by means of the conveyor rotor (11), - the crop rising in the loading space (20) is detected by the sensor device (30), - the sensor device (30) transmits a control command to the control device (35), - the control device (35) controls the drive of the transport device (21), characterized in that a position and / or voltage change of a the loading space (20) of the loading wagon (100) covering the loading space cover (27) is detected. Method for controlling a loading wagon (100) according to Claim 14 , characterized in that the change in position and / or voltage of the cargo space cover (27) is detected outside the cargo space. Method for controlling a loading wagon (100) according to Claim 14 or 15th , characterized in that the change in position and / or voltage of the cargo space cover (27) is transmitted to a clamping device (14) coupled to the cargo space cover and the sensor device (30) records the change in position and / or voltage of the clamping device (14) measures.

Images