JP2000220486A - Combine engine control unit - Google Patents

Abstract

(57) [Problem] A conventional combine engine cannot obtain an output corresponding to a change in a running field scene, that is, a change in load due to a wetland condition, and not only does not match the actual condition of work, but also There was a problem that it was not possible to properly switch between high output and low fuel consumption. SOLUTION: In a combine having a chassis 2 equipped with an engine E, a reaper 8 and a threshing device 11, the engine E controls the rotation by a governor G connected to an actuator M for control adjustment. together can be configured, the determination result control means 100 inputs provided Shitsuden state determining means S determines Shitsuden state, the control means 100 includes a plurality of work mode - set de W _1, W _2, W ₃ The control means 1 based on the detection information from the wetland state determination means S.
_No. 00 is a structure of the engine control device of the combine, characterized in that the work mode is selected from the work modes W ₁ , W ₂ , W ₃ and output to the actuator M for control adjustment.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a combine engine control device, and belongs to the technical field of agricultural machinery.

[0002]

2. Description of the Related Art Conventionally, a combine has the same engine output irrespective of a wet field state or a non-wet field state.

[0003]

In the combined engine control device as described above, when traveling in a wet field, a load acts on the traveling device to reduce the engine speed and the speed of the threshing device. This had an adverse effect on the sorting performance. The present invention is intended to solve such a problem.

[0004]

SUMMARY OF THE INVENTION The present invention takes the following technical means in order to solve the above-mentioned problems. That is, in the combine which is configured by equipping the chassis 2 with the engine E, the mowing device 8 and the threshing device 11, the rotation of the engine E can be controlled by a governor G connected to an actuator M for control adjustment. together constitute, by providing a Shitsuden state determining means S determines Shitsuden status decision control means 100 inputs, the control unit 100 includes a plurality of work mode - set de _{W 1, W 2, W 3} , the Based on the detection information from the wetland condition determination means S, the control means 1
Reference numeral 00 designates a combine engine control device characterized in that the work mode is selected from the work modes W ₁ , W ₂ , and W ₃ and output to the control adjustment actuator M.

[0005]

Embodiments of the present invention will be described with reference to the drawings. 1 to 3 show a traveling device of a working vehicle embodying the present invention. In the present embodiment, a description will be given of a combine, which is an agricultural machine, that cuts a culm planted in a field and performs threshing and sorting.

[0006] In front of the undercarriage 2 having the traveling device 1, a cutting device 8 for cutting the planted grain culm and transporting it to the rear, and a feed chain further rearward inheriting the grain culm transported from the cutting device 8 are provided. Supply / conveyance device 10 for conveying toward 9
Is provided. A supply transfer device 10
Threshing device 11 for threshing and sorting while transferring and transporting grain culm conveyed from feed chain 9, threshing device 1
Glen tank 1 for temporarily storing the grains selected by threshing in 1
2 and an operation unit 13 are placed. The engine E is mounted on the front part of the chassis 2 so as to be able to transmit the rotating parts of each device.

The undercarriage 2 is provided with elevating means 3 for elevating and lowering the undercarriage 2 and fore-and-aft inclining means 4 for inclining in the front-back direction. The traveling device 1 will be described. Traveling device 1
Corresponds to an endless belt-shaped crawler 14, a driving sprocket 15 for rotating the crawler 14, a plurality of grounding wheels 16 provided at predetermined intervals to ground the crawler 14 to the ground, and corresponding to unevenness of the ground. A movable roller 17, a track roller frame 18 supporting the ground roller 16 and the movable roller 17, a moving sprocket 19 for applying tension to the crawler 14, an adjusting device 20 for adjusting the movement of the moving sprocket 19, and a crawler 14 is formed by supporting wheels 21 and the like for preventing sagging. The same configuration is provided in a pair on the left and right.

The elevating means 3 is provided with the left and right traveling devices 1
Are provided respectively. The lifting means 3 will be described.
A front arm 22 is loosely connected to a pin 23 at the front of the track roller frame 18, and the rear arm 2 is
4 is loosely connected to the pin 25. The other end of the front arm 22 is loosely connected to a front rolling shaft 27 of a support 26 fixed to the chassis 2, and the arm 30 is loosely connected to the front rolling shaft 27. I have. The front arm 22 and the arm 30 are connected and fixed. The other end of the rear arm 24 is connected to the connecting arm 2 fixed to the chassis 2.
9 is loosely connected to the rear rolling shaft 28, and further, the arm 31 is loosely connected to the rear rolling shaft 28. The rear arm 24 and the arm 31 are connected and fixed. The arm 30 and the arm 31 are loosely connected by a connecting rod 32, and the end of the arm 31 is loosely connected to the end of a piston rod 34 of a hydraulic cylinder 33. The hydraulic cylinder 33 is loosely fitted on a plate 33 a loosely fitted to the chassis 2. A plate 33 b is provided from the loosely fitted axis, and the end thereof is connected to the pitching arm 39.

The plate 33b includes a hydraulic cylinder 33
The piston rod 34 is made movable. The reason why the hydraulic cylinder 33 is suspended by the plate 33a is that the piston rod 34 of the hydraulic cylinder 33 does not move when the pitching hydraulic cylinder 43 is operated. Therefore,
When the piston rod 34 of the hydraulic cylinder 33 is extended, the arm 31 rotates clockwise and pulls the connecting rod 32 in the left side view of FIG.
Rotate 0 clockwise. Then, both the rear arm 24 and the front arm 22 rotate clockwise, whereby the track roller arm 18 is lowered with respect to the chassis 2. Piston rods 3 of left and right hydraulic cylinders 33
When the wheels 4 are simultaneously extended, the chassis 2 rises above the ground.

When the piston rod 34 of the hydraulic cylinder 33 is contracted, the movement becomes opposite to the above-mentioned movement.
The track roller arm 18 moves upward with respect to the chassis 2. When the piston rods 34 of the left and right hydraulic cylinders 33 are simultaneously shortened, the chassis 2 is lowered with respect to the ground. The hydraulic cylinder 33 is also used for correcting when the combine is inclined right and left (rolling). For example, the traveling device 1 of the combine under the influence of the field
Is inclined to the left, the chassis 2 is also inclined to the left,
Since the operation unit 13 mounted on the chassis 2 also tilts to the left, the comfort of the operator riding on the operation unit 13 deteriorates, and the threshing device 11 also tilts to the left to sort threshed kernels. Also gets worse. So, in such a case,
The piston rod 34 of the left hydraulic cylinder 33 is extended to raise the left side of the chassis 2 to make the chassis 2 substantially parallel (rolling control). The inclination of the combine
It is detected by an inclination sensor 35 installed on the chassis 2. When the combine tilts to the right, the right hydraulic cylinder 3
The piston rod 34 is extended to raise the right side of the chassis 2.

Next, the front and rear inclining means 4 for inclining the chassis 2 in the front and rear direction will be described. One end of the connection arm 29 is connected to a pitching arm 39 by a pin 38, and the pitching arm 39 is loosely connected to the chassis 2 by a shaft 40. Specifically, the shaft 40 is rotatably supported by a running frame 41 by a bearing 42. Pitching arm 39 on the right side in the forward direction of the combine
Only the protrusion protrudes upward (projection 39a), and the end of the piston rod 44 of the pitching hydraulic cylinder 43 loosely fitted to the chassis 2 is loosely fitted to the end thereof.

When the piston rod 44 is extended, the pitching arm 39 rotates clockwise about the shaft 40 as a fulcrum. Since the pin 38 also rotates clockwise together with the pitching arm 39, the connecting arm 29, the rear rolling shaft 2
8. The rear arm 24 and the pin 25 are raised. The pin 25
Raises the rear portion of the track roller frame 18, so that the distance between the rear portion of the chassis 2 and the crawler 14 becomes shorter, and the vehicle chassis 2 (the entire combine) is inclined forward and downward. FIG. 6 shows a view of the front-up slope.

When the piston rod 44 is shortened, the movement is reversed, and the distance between the rear portion of the chassis 2 and the crawler 14 is increased, and the rearward upward inclination, that is, the chassis 2 (entire combine) is inclined forward and downward. Such a pitching movement is basically for making the inclination of the combine in the front-back direction substantially horizontal. When the field scene is a wetland,
The combine also tilts in the front-back direction as described above,
This is to prevent this. Specifically, when the inclination sensor 35 detects the movement of the chassis 2 (entire combine) in the front-rear direction, the vehicle is leveled. For example, when the chassis 2 is tilted forward with the traveling device 1, the pitching hydraulic cylinder 43 is used. The piston rod 44 is extended, and the chassis 2 (entire combine) is made horizontal by ascending forward.

When the undercarriage 2 is tilted rearward together with the traveling device 1, the piston rod 44 of the pitching hydraulic cylinder 43 is shortened, and the rear portion of the undercarriage 2 is moved upward with respect to the traveling device 1, so that the undercarriage is moved. 2 (the whole combine) is made horizontal. Next, the wetland condition determination means S on the upper surface of the traveling road will be described. In the present embodiment, since the combine is an agricultural machine, it is mainly determined whether the traveling field scene is a dry field or a wet field. The specific configuration is a so-called wet-field switch S of an on-off type installed on the operation unit 13,
When the operator determines that the field state is a wetland, the operator turns the wetland switch S on. Further, a configuration may be adopted in which whether or not a field is a wetland is automatically detected. For example, the inclination state of the aircraft may be detected by the inclination sensor 35 to determine the wetland condition, or the distance from the field scene may be measured by an ultrasonic sensor (not shown) to detect the sinking amount of the aircraft. To determine the wetland condition. In short, any means can be used as long as it can detect the wetland condition.

When the operation is started by running such a combine, the planted grain culm is cut off by the cutting device 8 and conveyed rearward. Then, it is taken over by the starting end of the feed chain 9 and threshed while being conveyed. Threshing is performed by the apparatus 11. The grains selected by threshing in the threshing apparatus 11 are transported into a Glen tank 12 and temporarily stored therein. Next, the controller 100 (corresponding to the "control means 100"; the same applies hereinafter) is a control means using a microcomputer, and stores data (reference values) in advance and stores various data. Is stored and set.

As shown in FIG. 4, the controller 100 connects the wetland condition determination means S, the automatic switch S2, and the engine rotation sensor S1 to the input side, and the governor-actuator to the output side. -Data M is connected. The automatic switch S2 is connected to the control
The engine rotation sensor S1 monitors the rotation of the engine and controls the engine speed.
It has a function of inputting the detection information of the code to the controller 100.

In the case of the embodiment of the present invention, as shown in FIG. 5, first, the working mode sets the reference value to the intermediate zone, and sets the upper and lower upper and lower values respectively. A plurality of work modes W ₁ , W ₂ , W ₃ are set in the area.
The setting is made based on whether or not the wetland in the field scene detected by the wetland state determination means S. Stated a little detail, when the field surface is a Shitsuden state heavy work mode - a de W _2, not Shitsuden state, i.e. when the dry paddy field generally work mode - a de W ₁ to constitute. Further, at the time of light load during road, light work mode - are set by dividing into three as de W _3.

The controller 100 is brought into an execution state by the ON operation of the automatic switch S2, and the preset work modes W ₁ , W ₂ , W ₃ and the inputted and stored data ( has a configuration which controls the operation of the motor M ₂ - reference value) and Shitsuden state determining means S, the actuator by the control signal output by comparing operation on the detection information input from the rotation sensor S _2.

Next, the engine E controls the controller 10 based on the detection information input from the wetland condition determination means S.
The control signal of the work mode selected by 0 is output, the governor actuator M is driven, and the governor G is automatically controlled and adjusted. Therefore, the engine E
As shown in the graph of FIG. 5, the rotational speed is selected by controlling the fuel injection amount based on each operation mode.

In the graph shown in FIG. 5, the lower graph shows the engine horsepower on the vertical axis and the engine speed on the horizontal axis, and the upper graph shows the torque curve. , Corresponding to the lower graph. In this graph, the solid line generally work mode - a de W _1, the two-dot chain line heavy work mode - a de W _2, a dotted light work mode - is a graphical representation of de W _3.

[0021] As described hereinbefore, during the working travel in Shitsuden, heavy duty mode - because the de W ₂ can be prevented from engine E speed decreases. Therefore, smooth running becomes possible. Further, in the combine, since the rotation speed of the threshing device 11 can be prevented from lowering, it is possible to prevent the sorting performance of the grain from being deteriorated. As another embodiment of the wetland condition determination means S, in the case of combine, the determination can be made also by the elevation position of the reaper 8. That is, when the combine moves forward in the wetland state, the front portion of the chassis 2 rises due to the driving reaction force, and therefore, the mowing device 8 is lowered below the normal position with respect to the chassis 2. Since the field surface by detecting the position of the apparatus 8 reaper for the chassis 2 can be determined to be a Shitsuden state, such heavy work the working mode even when motor - may be a de-W ₂ .

As another embodiment of the wetland condition judging means S, it may be configured to detect whether the chassis 2 is moving up or down. That is, in the case of a wetland, the undercarriage 2 is raised by the elevating means 3 as described above in order to prevent the lower portion of the undercarriage 2 from contacting the field scene. In order to detect the state of movement of the lifting / lowering means 3, a position sensor for detecting the amount of movement of the piston rod 34 is provided. The height is rising)
The working mode may be a heavy work mode W _2.

As another embodiment of the wetland condition judging means S, a configuration may be adopted in which the left and right rolling amounts of the chassis 2 are detected. That is, in the case of a wet field, the left and right inclinations of the undercarriage 2 become large. Therefore, the amount of movement of the left and right piston rods 34 is detected by a position sensor. the may be a heavy work mode W _2.

In a combine, there is a fixed machine which cannot execute the rolling control or the pitching control. In such a machine, as an alternative embodiment of the wetland condition determining means S, an inclination for detecting the inclination of the vehicle body in the left, right, front and rear directions is used. A sensor may be provided to determine the wetland condition in the field scene by detection of the tilt sensor. In the case of an airframe that can only execute rolling control and cannot execute pitching control, an inclination sensor that detects inclination of the vehicle body in the left-right and front-rear directions, an inclination sensor that detects inclination only in the left-right direction, and an inclination sensor that detects only the front-rear direction are provided. Either may be used. The same applies to an airframe that can only execute pitching control and cannot execute rolling control.

During the running operation (threshing and sorting) as described above, the controller 100 controls the engine based on the detection information input from the wetland condition determination means S. That is, the controller 100 compares the detection information input from the wetland condition determination means S with the reference value data stored in the microcomputer in advance and sends the detection information to the governor actuator M. The control signal is output to control the governor-G fuel injection amount. In this case, controller - La 100, heavy work mode when the Shitsuden state - outputs a control signal to select the de W _2, governor - actuator - working fuel injection quantity governor -G by driving the motor M You'll have to do more to accommodate the load. Therefore, as shown in the graph of FIG. 5, the output of the engine E is increased and the engine E can escape from the overload state.

[0026] Conversely, controller - La 100 generally work mode when not in Shitsuden state - by selecting the word W ₁ outputs the control signal, the governor - actuator - governor -G by driving the motor M
The fuel injection amount is reduced to correspond to the work load. In this case, the engine 2 is driven by injecting a standard amount of fuel so that the governor 5 corresponds to the work load.

[0027] Then, controller - La 100, when a light load, such as during road, light work mode - by selecting the word W _3, the governor - actuator - control signal to the motor M is outputted the engine control Perform Therefore, as shown in the graph of FIG. 5, the engine E can maintain the required output and the required rotation speed despite the supply of a small amount of fuel, and can be driven in accordance with the actual condition of the work.

As described above, the engine control apparatus according to the present invention can provide an engine output suitable for the actual work state by performing fuel injection supply according to the work load of the combiner, and can perform an accurate work. It has the feature that fuel efficient operation can be performed without wasting fuel consumption.

[0029]

According to the present invention, as described above, the engine E
The governor G connected to the control adjustment actuator M is configured to enable the rotation control, and a wetland state determination means S for determining the wetland state is provided to input the determination result to the control means 100. Indicates a plurality of operation modes W
₁ , W ₂ , W ₃ are set, and based on the detection information from the wetland condition determination means S, the control means 100 selects from the work modes W ₁ , W ₂ , W ₃ and performs the control. Since the output is provided to the adjustment actuator M, an engine output suitable for the actual condition of the work can be obtained by fuel injection supply according to the work load of the combiner, and the work can be performed accurately. And low fuel consumption. Especially when working in wet fields, heavy work mode
Since the de-W ₂ can be prevented from engine E speed is lowered, smooth running becomes possible.

[Brief description of the drawings]

FIG. 1 is a left side view of the combine.

FIG. 2 is a left side view of the traveling device.

FIG. 3 is a plan view of the traveling device.

FIG. 4 is a block diagram.

FIG. 5 is an engine rotation performance diagram.

[Explanation of symbols]

 E: engine, G: governor, M: actuator, S
... Wet field condition determination means, W ₁… General work mode, W_Two… Protracted
Business mode, W_Three… Light work mode, 2… undercarriage, 8… reaper
11, threshing device, 100, control means.

Claims (1)

[Claims] 1. A combine comprising a chassis 2 equipped with an engine E, a reaper 8 and a threshing device 11, wherein the engine E is controlled in rotation by a governor G connected to an actuator M for control adjustment. with a possible constitution, by providing a Shitsuden state determining means S determines Shitsuden status decision control means 100 inputs, the control unit 100 includes a plurality of work mode - set the de W _1, W _2, W ₃ The control means 1 based on the detection information from the wetland state determination means S
00 is an engine control device for a combine engine, wherein the operation mode is selected from the work modes W ₁ , W ₂ and W ₃ and output to the actuator M for control adjustment.