JP6846881B2 - combine - Google Patents

Description

The present invention relates to a combine that automatically sets the engine speed to the rated speed when the cutting unit and the threshing device are changed from the stopped state to the driven state.

As the combine as described above, for example, the combine described in Patent Document 1 is already known. The combine described in Patent Document 1 has a cutting section (“pre-cutting section” in the document) that is driven by the power of the engine and cuts the planted grain clutch, and a cutting section that is driven by the power of the engine and cut by the cutting section. A threshing device (“threshing section” in the literature) that threshes the grain, an operation unit that switches the harvesting section and the threshing device between the drive state and the stopped state (“work clutch lever” in the literature), and the harvesting section and threshing. The state detection unit (“threshing position sensor”, “harvesting position sensor” in the literature) that detects whether the device is in the driven state or the stopped state, and the cutting unit and the threshing device are in the driven state from the stopped state. Occasionally, it is provided with an engine speed automatic setting unit (“rotation speed control means” in the literature) that automatically controls the engine speed to automatically set the rated speed. According to the combine described in Patent Document 1, the engine speed can be automatically set to the rated speed simply by switching the harvesting unit and the threshing device from the stopped state to the driven state.

Japanese Unexamined Patent Publication No. 2012-90607

Here, depending on the field, there is a field (for example, a seed paddy field, a wheat field, a barley field, a soybean field, etc.) in which the cutting and threshing work should be performed at a rotation speed lower than the rated rotation speed. However, in the combine described in Patent Document 1, when the field to be worked on is a field in which the harvesting and threshing work should be performed at a rotation speed lower than the rated rotation speed, the operator sets the engine rotation speed to the rated rotation speed. There is a risk of forgetting to change to a lower rpm.

In view of the above situation, it is necessary to change the engine speed to a speed lower than the rated speed when the field to be worked on is a field where the harvesting and threshing work should be performed at a speed lower than the rated speed. There is a demand for a combine that can be surely noticed by the worker.

The feature of the present invention is
The cutting section, which is driven by the power of the engine and cuts the planted culm,
A threshing device that is driven by the power of the engine and threshes the cut culms cut by the cutting unit.
An operation unit that switches the cutting unit and the threshing device between a drive state and a stop state,
A state detection unit that detects whether the cutting unit and the threshing device are in the driving state or the stopped state, and
With a controller,
To the controller
When the cutting unit and the threshing device change from the stopped state to the driving state, an engine rotation speed automatic setting unit that automatically controls the engine rotation speed to automatically set the rated rotation speed, and an engine rotation speed automatic setting unit.
A field information acquisition unit that acquires field information related to the field that is the work target and corresponds to the position information of this machine.
A field information management unit that manages the field information input to the field information acquisition unit is provided.
When the field information input to the field information acquisition unit satisfies a specific condition, the field information management unit changes the cutting unit and the grain removal device from the stopped state to the driven state. The purpose is to notify the user to change the rotation speed to a rotation speed lower than the rated rotation speed.

According to this feature configuration, when the field information input to the field information acquisition unit satisfies a specific condition, the rotation speed is rated at the rated rotation speed when the cutting unit and the threshing device are changed from the stopped state to the driven state. You will be notified to change to a rotation speed lower than the number. Here, as a specific condition, for example, by setting the condition of the field where the cutting and degraining work should be performed at a rotation speed lower than the rated rotation speed, the field to be worked is set at a rotation speed lower than the rated rotation speed. The operator can be sure that the engine speed needs to be changed to a speed lower than the rated speed in the field where the cutting and grain removal work should be performed.

Further, in the present invention
When the field information input to the field information acquisition unit satisfies a specific condition, the field information management unit changes the cutting unit and the threshing device from the stopped state to the driven state. , It is preferable to control so that the automatic control is not performed.

According to this feature configuration, when the cutting section and the threshing device are changed from the stopped state to the driven state, the engine speed is not automatically set to the rated speed, so that the field to be worked on can be determined. In a field where the cutting and threshing work should be performed at a rotation speed lower than the rated rotation speed, it is possible to avoid a situation in which the paddy or the like is damaged by the cutting and threshing work at the rated rotation speed. If the engine speed is lower than the rated speed when the cutting unit and the grain removal device are changed from the stopped state to the driven state, the engine speed is set to a lower speed than the rated speed. Even if the operation of changing is not performed artificially, the cutting and grain removal work can be performed at a rotation speed lower than the rated rotation speed.

Further, in the present invention
When the field information input to the field information acquisition unit satisfies a specific condition, the field information management unit changes the cutting unit and the threshing device from the stopped state to the driven state. It is preferable to control so that at least one of the cutting unit and the threshing device is switched from the driving state to the stopped state.

According to this feature configuration, since at least one of the cutting unit and the threshing device is not driven, not only the automatic control by the engine speed automatic setting unit is not performed, but also the operator is suspicious. Therefore, the attention of the worker can be directed to the notification by the field information management unit.

Further, in the present invention
It is preferable that the engine speed automatic setting unit is provided with an automatic control selection unit that switches between an enabled state in which the automatic control is executed and an invalid state in which the automatic control is not executed.

According to this feature configuration, when the field to be worked on is a field where the cutting and threshing work should be performed at the rated rotation speed, the engine rotation speed automatic setting unit is switched to the effective state by the automatic control selection unit to perform the rating. It is possible to reliably perform cutting and threshing work at the number of revolutions. In addition, when the field to be worked is a field where the cutting and grain removal work should be performed at a rotation speed lower than the rated rotation speed, the engine rotation speed automatic setting unit is switched to the invalid state by the automatic control selection unit to perform cutting. If the engine speed is lower than the rated speed when the part and the grain removal device are changed from the stopped state to the driven state, the engine speed should be maintained at a speed lower than the rated speed. Can be done.

Further, in the present invention
It is preferable that the notification by the field information management unit is continued until the rotation speed falls below the permissible rotation speed, which is a value lower than the rated rotation speed.

According to this feature configuration, the notification by the field information management unit is continued until the rotation speed falls below the permissible rotation speed, so that the engine speed is changed to a rotation speed lower than the permissible rotation speed for the operator. You can definitely encourage them to do it.

It is a right side view which shows a combine. It is a figure which shows the control block. It is a time chart which shows the automatic turning control of a grain discharge device.

A mode for carrying out the present invention will be described with reference to the drawings.

[Overall composition of combine harvester]
FIG. 1 shows a combine (so-called head-feeding combine). This combine includes a crawler type traveling device 1 and an airframe frame 2 supported by the traveling device 1. A cutting section 3 for cutting planted culms is provided at the front portion of the machine body. A cabin 4 is provided behind the cutting section 3.

An engine E is provided below the cabin 4. Behind the cabin 4, a threshing device 5 for threshing the cut culms cut by the cutting unit 3 and a grain tank 6 for storing the grains obtained by the threshing treatment are adjacent to each other in the left-right direction of the machine. It is provided in. On the left side of the threshing device 5, a feed chain (not shown) is provided to convey the cut culms cut by the cutting unit 3 to the threshing device 5. A grain discharge device 7 for discharging grains in the grain tank 6 is connected to the grain tank 6.

The grain discharging device 7 includes a vertical transport unit 8 extending in the vertical direction and a horizontal transport unit 9 connected to the upper end portion of the vertical transport unit 8. The grain discharge device 7 can move between a storage position where the lateral transport unit 9 is located within the width of the machine body (see FIG. 1) and a discharge position where the horizontal transport unit 9 projects to the outside of the machine body. The vertical transport portion 8 can be swiveled around an axial center Y1 extending in the vertical direction by the electric motor M. The lateral transport portion 9 can swing up and down around the axis X1 extending in the horizontal direction by the hydraulic cylinder S.

A cutting clutch (for example, a belt tension clutch operated by an electric motor or the like; not shown) is provided in a power transmission path for transmitting the power of the engine E to the cutting unit 3. The cutting clutch can be switched between a transmission state in which the power of the engine E is transmitted to the cutting unit 3 and a cutoff state in which the power from the engine E to the cutting unit 3 is cut off. When the cutting clutch is switched to the transmission state, the cutting unit 3 is driven by the power of the engine E.

A threshing clutch (for example, a belt tension clutch operated by an electric motor or the like; not shown) is provided in a power transmission path for transmitting power to the engine E to the threshing device 5. The threshing clutch can be switched between a transmission state in which the power of the engine E is transmitted to the threshing device 5 and a cutoff state in which the power from the engine E to the threshing device 5 is cut off. When the threshing clutch is switched to the transmission state, the threshing device 5 is driven by the power of the engine E.

[Control block]
As shown in FIG. 2, on the input side of the controller C, a clutch lever sensor 10 (corresponding to the "state detection unit" according to the present invention), an engine speed operation dial 11, and an automatic control selection switch 12 (corresponding to the present invention). (Corresponding to the "automatic control selection unit"), the automatic swivel switch 13 and the limit sensor 14 are connected. A display 15, a speaker 16, a hydraulic control valve 17, and an electric motor M are connected to the output side of the controller C. The controller C includes an engine speed changing unit 18, an engine speed automatic setting unit 19, a field information acquisition unit 20, a field information management unit 21, a wireless communication unit 22, a position information acquisition unit 23, and a hydraulic control valve. It includes a drive unit 24, an electric motor drive unit 25, and a timer unit 26.

The clutch lever 27 (corresponding to the "operation unit" according to the present invention) switches the cutting clutch and the threshing clutch between a transmission state and a disengagement state. That is, the clutch lever 27 switches the cutting unit 3 and the threshing device 5 between a driving state and a stopped state. The clutch lever 27 includes an off position in which the cutting clutch and the threshing clutch are in the disengaged state, a threshing insertion position in which the threshing clutch is in the transmission state, and a cutting position in which the cutting clutch and the threshing clutch are in the transmission state. It is possible to switch to. By operating one clutch lever 27, the operator can switch the cutting clutch and the threshing clutch between a transmission state and a disengagement state.

The clutch lever sensor 10 detects whether the clutch lever 27 is in the off position, the threshing position, or the cutting position. That is, the clutch lever sensor 10 detects whether the cutting unit 3 and the threshing device 5 are in the driving state or the stopped state. In the present embodiment, the clutch lever sensor 10 is a potentiometer sensor that measures the swing angle of the clutch lever 27.

The engine speed operation dial 11 changes the speed of the engine E. By operating the engine speed operation dial 11, the operator can change the speed of the engine E to an arbitrary value.

The automatic control selection switch 12 switches the engine speed automatic setting unit 19 between an enabled state in which automatic control, which will be described in detail later, is executed, and an invalid state in which the automatic control is not executed. By operating the automatic control selection switch 12, the operator can switch the engine speed automatic setting unit 19 between the enabled state and the disabled state.

The automatic swivel switch 13 automatically swivels the grain discharge device 7 from the storage position to the discharge position. When the operator operates the automatic swivel switch 13, the hydraulic cylinder S and the electric motor M can automatically swivel the grain discharge device 7 from the storage position to the discharge position.

The engine speed changing unit 18 changes the speed of the engine E according to the operation position of the engine speed operation dial 11.

When the clutch lever sensor 10 detects that the clutch lever 27 is in the cutting position (when the cutting unit 3 and the grain removing device 5 are changed from the stopped state to the driven state), the engine speed automatic setting unit 19 is in the driving state. Automatic control is performed to automatically set the rotation speed of the engine E to the rated rotation speed. If the clutch lever 27 is in the cutting position, it can be determined that the cutting work state is in effect. The automatic control by the engine speed automatic setting unit 19 eliminates the need for the operator to change the speed of the engine E to the rated speed, so that the cutting and threshing work can be easily performed. In the present embodiment, the rated rotation speed is about 90% of the maximum rotation speed of the engine E.

The wireless communication unit 22 communicates with a mobile terminal 28 (for example, a smartphone, a tablet, etc.) possessed by the worker via a wireless LAN such as Wi-Fi or Bluetooth (registered trademark).

The position information acquisition unit 23 acquires the position information of the combine by receiving the radio wave from the GPS 29. The position information of the combine acquired by the position information acquisition unit 23 is received by the mobile terminal 28.

The field information acquisition unit 20 acquires field information regarding the field F, which is the work target. Here, the management center 30 stores field information regarding various fields including the field F to be worked on. The field information includes, for example, the type of crop cultivated in the field (for example, rice, wheat, barley, soybean, corn, etc.), the use of the crop cultivated in the field (for example, for food, seed paddy, etc.), A number (ID) for identifying the field can be included.

When the position information of the combine received by the mobile terminal 28 is transmitted to the management center 30, among the field information of various fields stored in the management center 30, the field information of the field corresponding to the position information of the combine Is transmitted from the management center 30 to the mobile terminal 28. Then, the field information received by the mobile terminal 28 is input to the field information acquisition unit 20 as the field information regarding the field F which is the work target. Communication between the management center 30 and the mobile terminal 28 is performed via a wireless LAN such as Wi-Fi or the Internet.

The field information management unit 21 manages the field information input to the field information acquisition unit 20. When the field information input to the field information acquisition unit 20 satisfies a specific condition, the field information management unit 21 detects that the clutch lever 27 is in the cutting position by the clutch lever sensor 10 (cutting). When the part 3 and the grain removing device 5 are changed from the stopped state to the driven state), the engine E is notified to change the rotation speed to a rotation speed lower than the rated rotation speed.

Here, as a specific condition, for example, a condition of a field where the cutting and threshing work should be performed at a rotation speed lower than the rated rotation speed is set. In the present embodiment, as specific conditions, for example, the use of the crop cultivated in the field is for seed paddy (condition 1), and the type of crop cultivated in the field is wheat (condition 2). , The type of crop cultivated in the field is barley (condition 3), and the type of crop cultivated in the field is soybean (condition 4).

When the field information input to the field information acquisition unit 20 satisfies any of the conditions 1 to 4, the field information management unit 21 detects that the clutch lever 27 is in the cutting position by the clutch lever sensor 10. When this is done, the engine E is notified to change the rotation speed to a rotation speed lower than the rated rotation speed. As a result, a notification sound (for example, voice, warning sound, etc.) is output from the speaker 16, and a notification display (for example, characters, figures, symbols, etc.) is output on the display 15.

As a result, the operator can surely notice that the rotation speed of the engine E needs to be changed to a rotation speed lower than the rated rotation speed. Then, the operator can operate the engine rotation speed operation dial 11 to change the rotation speed of the engine E to a rotation speed lower than the rated rotation speed. The notification by the field information management unit 21 (notification sound from the speaker 16 and notification display of the display 15) is continued until the rotation speed of the engine E falls below the allowable rotation speed, which is a value lower than the rated rotation speed.

[Automatic swivel control of grain discharge device]
As shown in FIG. 3, when the operator operates the automatic swivel switch 13, the hydraulic control valve 17 is switched from the closed state to the open state by the hydraulic control valve drive unit 24 so that the hydraulic cylinder S extends, and the timer unit. 26 starts the countdown. The countdown by the timer unit 26 is performed from the time when the automatic turning switch 13 is operated until the time t elapses. Then, when the limit sensor 14 detects that the lateral transport unit 9 has risen to a height at which the grain discharge device 7 can swivel (hereinafter referred to as “swivelable height”) (shown by the solid line in FIG. 3). (Normal state), the hydraulic cylinder S extends and stops its operation.

After that, when the countdown by the timer unit 26 ends (time t elapses from the time when the automatic turning switch 13 is operated), the electric motor drive unit 25 starts driving the electric motor M. In this way, the vertical transport unit 8 is swiveled around the axis Y1 by the electric motor M, so that the grain discharge device 7 moves to the discharge position.

Here, when the limit sensor 14 is out of order, the limit sensor 14 rises to the swivel height of the lateral transport portion 9 even though the lateral transport portion 9 does not actually rise to the swivel height. There is a risk of a state in which it is detected (a state at the time of failure shown by the dotted line in FIG. 3). In this case, if the condition for the electric motor drive unit 25 to start driving the electric motor M is only that the limit sensor 14 detects that the lateral transport unit 9 has risen to a swivel height, the lateral transport A situation may occur in which the grain discharge device 7 is swiveled in a state where the portion 9 is not raised to a swivelable height.

By the way, the time required for the lateral transport portion 9 to rise to the swivelable height can be estimated from the characteristics of the hydraulic cylinder S (for example, the elongation speed and the like). Therefore, in the present embodiment, the countdown time t is set based on the time required for the lateral transport unit 9 to rise to the swivelable height, and the electric motor drive unit 25 starts driving the electric motor M. The conditions are that the limit sensor 14 detects that the lateral transport unit 9 has risen to a swivel height, and that time t has elapsed from the time when the automatic swivel switch 13 is operated. As a result, when the limit sensor 14 is out of order, it is possible to avoid a situation in which the grain discharge device 7 is swiveled in a state where the lateral transport portion 9 is not raised to a swivelable height.

[Another Embodiment]
(1) In the above embodiment, when the field information input to the field information acquisition unit 20 satisfies a specific condition, when the clutch lever sensor 10 detects that the clutch lever 27 is in the cutting position. Although the field information management unit 21 provides the notification, the field information management unit 21 may perform the notification, and the engine rotation speed automatic setting unit 19 may not automatically control the notification. As such a configuration, for example, the following specific examples (first specific example, second specific example) can be considered.

As a first specific example, the field information management unit 21 determines that the clutch lever 27 is in the cutting position when the field information input to the field information acquisition unit 20 satisfies a specific condition. When it is detected by, it may be controlled so that automatic control is not performed. As a result, when the cutting unit 3 and the threshing device 5 are changed from the stopped state to the driven state, the rotation speed of the engine E is not automatically set to the rated rotation speed, so that the field F, which is the work target, is affected. In a field where the cutting and threshing work should be performed at a rotation speed lower than the rated rotation speed, it is possible to avoid a situation in which the paddy or the like is damaged by the cutting and threshing work at the rated rotation speed. Further, when the clutch lever sensor 10 detects that the clutch lever 27 is in the cutting position, if the rotation speed of the engine E is lower than the rated rotation speed, the rotation speed of the engine E is set to the rated rotation speed. Even if the operation of changing to a lower rotation speed is not artificially performed, the cutting and grain removal work can be performed at a rotation speed lower than the rated rotation speed.

As a second specific example, the field information management unit 21 determines that the clutch lever 27 is in the cutting position when the field information input to the field information acquisition unit 20 satisfies a specific condition. When detected by, at least one of the cutting unit 3 and the grain removing device 5 may be controlled so as to be switched from the driven state to the stopped state. As a result, at least one of the cutting unit 3 and the threshing device 5 does not go from the stopped state to the driving state, so that the automatic control by the engine speed automatic setting unit 19 is not performed.

(2) In the above embodiment, the field information regarding various fields is stored in the management center 30, but it may be stored in the mobile terminal 28. In this case, when the mobile terminal 28 receives the position information of the combine, among the field information about various fields stored in the mobile terminal 28, the field information about the field corresponding to the position information of the combine is the work target. It is input to the field information acquisition unit 20 as field information regarding a certain field F.

(3) In the above embodiment, the speaker 16 and the display 15 are provided for notification by the field information management unit 21, but only one of the speaker 16 and the display 15 may be provided. Further, a lamp may be provided in place of the display 15 or together with the display 15 for notification by the field information management unit 21.

(4) In the above embodiment, the "operation unit" according to the present invention is the clutch lever 27, but it may be a switch, or the operation tool for the cutting section (the "operation unit" according to the present invention). (Equivalent) and an operating tool for the threshing device (corresponding to the “operation unit” according to the present invention) may be provided separately.

(5) In the above embodiment, the clutch lever sensor 10 (corresponding to the "state detection unit" according to the present invention) is a potentiometer sensor, but may be a limit sensor.

(6) In the above embodiment, the engine rotation speed automatic setting unit 19 automatically controls when the clutch lever sensor 10 detects that the clutch lever 27 is in the cutting position, but the clutch lever 27 cuts. In addition to the condition that the clutch lever sensor 10 detects that the clutch lever is in the on position, other conditions may be set. For example, as another condition, it may be a condition that the sensor that detects the cut culm detects the cut culm.

The present invention can be used not only for head-feeding combine harvesters but also for ordinary-type combine harvesters.

3 Mowing unit 5 Threshing device 10 Clutch lever sensor (state detection unit)
12 Automatic control selection switch (automatic control selection unit)
19 Engine speed automatic setting unit 20 Field information acquisition unit 21 Field information management unit 27 Clutch lever (operation unit)
C controller E engine F field to be worked

Claims (5)

The cutting section, which is driven by the power of the engine and cuts the planted culm,
A threshing device that is driven by the power of the engine and threshes the cut culms cut by the cutting unit.
An operation unit that switches the cutting unit and the threshing device between a drive state and a stop state,
A state detection unit that detects whether the cutting unit and the threshing device are in the driving state or the stopped state, and
With a controller,
To the controller
When the cutting unit and the threshing device change from the stopped state to the driving state, an engine rotation speed automatic setting unit that automatically controls the engine rotation speed to automatically set the rated rotation speed, and an engine rotation speed automatic setting unit.
A field information acquisition unit that acquires field information related to the field that is the work target and corresponds to the position information of this machine.
A field information management unit that manages the field information input to the field information acquisition unit is provided.
When the field information input to the field information acquisition unit satisfies a specific condition, the field information management unit changes the cutting unit and the threshing device from the stopped state to the driven state. , A combine that notifies to change the rotation speed to a rotation speed lower than the rated rotation speed. When the field information input to the field information acquisition unit satisfies a specific condition, the field information management unit changes the cutting unit and the threshing device from the stopped state to the driven state. The combine according to claim 1, wherein the automatic control is controlled so as not to be performed. When the field information input to the field information acquisition unit satisfies a specific condition, the field information management unit changes the cutting unit and the threshing device from the stopped state to the driven state. The combine according to claim 1 or 2, wherein at least one of the cutting unit and the threshing device is controlled so as to be switched from the driven state to the stopped state. According to any one of claims 1 to 3, the automatic control selection unit for switching the automatic engine speed setting unit between an effective state in which the automatic control is executed and an invalid state in which the automatic control is not executed is provided. The listed combine. The combine according to any one of claims 1 to 4, wherein the notification by the field information management unit is continued until the rotation speed falls below an allowable rotation speed which is a value lower than the rated rotation speed.

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