JP3782371B2 - Control device in combine - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a control device for a combine, and more particularly to a control device that executes control for increasing the engine speed to a rated speed under a predetermined condition.
[0002]
[Prior art]
Conventionally, as disclosed in, for example, Japanese Patent Laid-Open No. 7-303414, a fuel injection amount detection sensor for an electronic governor that controls engine output (load) in a combiner (position adjustment of a plunger for fuel injection) Rack position detection sensor), a vehicle speed sensor, a load sensor for detecting a load such as a threshing portion, etc., and the output (torque) of the engine varies depending on the combine working condition and crop conditions. It is also known to perform constant rotation speed control (isochronous control) that keeps the engine rotation speed substantially constant.
[0003]
Further, as disclosed in JP-A-1-309620, JP-A-7-303414, etc., the engine speed is reduced to the idling speed until the combine operation is started. Conditions for starting various operations, for example, (1) the vehicle speed exceeds a certain level (thus, it is determined that the vehicle is traveling in the field), and (2) a threshing clutch that turns on and off the power transmission to the threshing section ON (entered) (this enables the operator to understand the intention to perform the mowing and threshing work), and (3) the auger clutch of the auger for discharging the culm is turned on (entered) (Thus, the operator understands the intention to execute the operation of discharging the threshed grain out of the machine from the grain tank), and (4) automatically switching the operation of the auger. Satisfies one of the conditions that the automatic switch is on (this tells the operator that he intends to perform the task of discharging the threshed grain out of the grain tank out of the machine) For example, the engine speed is increased to the rated speed. On the other hand, when none of the above conditions (1) to (4) is satisfied, the engine is automatically maintained at idling speed, preventing wasteful use of fuel and saving energy consumption. Control was being executed.
[0004]
[Problems to be solved by the invention]
However, in the conventional system, if a state change that increases the engine speed from idling rotation to rated rotation is suddenly performed when a predetermined condition is satisfied, for example, power transmission to a threshing unit or the like is performed. A large force suddenly acts on the belt for this, leading to an early breakage of the belt, and sudden acceleration also acts on the operator on the combine to make the ride uncomfortable. Even when there is a control mode, when entering the mowing and threshing operation, the mode is temporarily switched off, the engine rotation is manually increased, and then there is a user who presses the switch to enter the mode, or on the contrary, the high-speed operation There was a user who like to request and want to start cutting and threshing at the rated rotation speed.
[0005]
As described above, while the user's preferences are various, the conventional technology has a problem that it cannot respond to the user's request in detail because there is only one mode of automatic engine speed control.
[0006]
On the other hand, recently, a display device such as a liquid crystal display or a display instrument is provided in the vicinity of the operation unit of this type of farm work machine (combine), and by displaying status information of each part of the farm work machine on these display devices The operating state (for example, the engine speed and load, the vehicle speed, the amount of grain loaded in the grain tank, etc.) can be visually recognized by the operator.
[0007]
The present invention has been made to solve the above-described problems, and is capable of executing fine automatic engine speed control according to user's preference and using a display device for setting the automatic control. It is a technical problem to make it easy to do.
[0008]
[Means for Solving the Problems]
In order to solve this technical problem, a control device for a combine according to the invention of claim 1 includes an on / off discrimination sensor for a threshing clutch for turning on / off power transmission to a threshing portion, and a control means for controlling the engine speed. In the equipped combine, when the vehicle speed of the combine is detected or when neither of the conditions for the threshing clutch is satisfied, the engine speed is controlled to be maintained in the idling state, while the two conditions For at least one of the conditions, at least the OFF type that prevents the engine speed from increasing, the slow type that increases the rated speed over a predetermined time, and the rated speed instantaneously It is equipped with a control means that allows the user to select the quick type to be raised to
[0009]
On the other hand, the control device in the combine according to the invention of claim 2 automatically controls the on / off discrimination sensor of the threshing clutch for turning on and off the transmission of power to the threshing portion, the auger clutch sensor for the auger for discharging the culm and the operation of the auger. In a combine equipped with an automatic switch for switching to and a control means for controlling the number of revolutions of the engine, the presence of a vehicle speed of the combine is detected, or the threshing clutch is engaged, or the auger clutch is engaged, or When none of the conditions when the auger automatic switch is turned on is satisfied, the engine speed is controlled to be maintained in an idling state, while at least the engine speed is set to at least one of the four conditions. The OFF type to prevent it from rising and the rated times And slow type to raise up to several, in which the user and quick type wherein increased to rated speed instantly with a control means for enabling selection.
[0010]
According to a third aspect of the present invention, there is provided the control device for the combine according to the first or second aspect, further comprising display means for displaying information on the various modes of the combine on the screen, wherein the display means controls the rotational speed of the engine. The mode control setting screen is displayed, and on the control setting screen, any one of the at least three types can be selected and set for at least one of the conditions. is there.
[0011]
【The invention's effect】
If comprised like Claim 1, since a user can select the aspect (type) which raises the engine speed from an idling state to a rated speed for every said condition according to a user's liking, it is set as the kind of work. There exists an effect that the operation | movement of the corresponding combine can be implement | achieved.
[0012]
In addition, since the conditions for selecting the three types are increased, the operation of the combine can be further easily changed according to the user's preference.
[0013]
According to the third aspect of the present invention, the user can set the automatic control mode while looking at the setting screen of the display means, so that errors are reduced and a large number of switches for setting are not required, and the cost is reduced. There is an effect that the reduction can be achieved.
[0014]
DETAILED DESCRIPTION OF THE INVENTION
Next, an embodiment of the present invention will be described in detail with reference to the drawings. As shown in FIGS. 1 to 3, the traveling machine body 1 in the combiner is configured to be movable up and down with respect to a pair of left and right traveling crawlers 2 and 2 via a traveling unit lifting and lowering driving means described later. As shown in FIG. 1, a threshing device 3 is mounted on the left side in the traveling direction of the traveling machine body 1. The pre-cutting processing device 4 disposed at the front portion of the traveling machine body 1 is supported by the traveling machine body 1 so as to be capable of moving up and down via a lifting frame 14, and between the lifting frame 14 and the traveling machine body 1. The hydraulic cylinder 9 for the cutting part as an actuator mounted on the actuator can be adjusted up and down.
[0015]
A clipper-type cutting blade device 5 is arranged at the lower part of the pre-cutting processing device 4, and a culm pulling device 6 for six strips is arranged at the front (see FIG. 3). Between the grain raising apparatus 6 and the front end of the feed chain 7 in the threshing apparatus 3, a grain conveying apparatus 8 is arranged, and the front part of the lower part of the grain raising apparatus 6 is directed in the traveling direction of the traveling machine body. The weeding body 10 which protrudes is attached. A driver's cab 11 is disposed at the front right side of the traveling machine body 1, and a grain tank 12 is disposed behind the driver's cab 11.
[0016]
As shown in FIG. 4, a part of the power from the engine 15 provided in the lower rear part of the cab 11 is transmitted through the auger clutch 16 to the bottom screw conveyor 17 in the grain tank 12 and the vertical and horizontal screws in the discharge auger 28. While the remaining power from the engine 15 is transmitted to the conveyors 18a and 18b, the hydraulic pump hydraulic motor type traveling drive unit 24, the handling cylinder 13 and the processing cylinder 20 of the threshing device 3, and the tang 21. Rotating and driving the first receiving screw conveyor 22a, the second receiving screw conveyor 22b, the feed chain 7, the whipping screw conveyor 23 to the grain tank 12, the peristaltic sorting mechanism 40, the waste cutter 27, etc. It is like that.
[0017]
The power to the pre-cutting processing device 4 is transmitted via the output shaft 26 from the travel drive unit 24 when synchronized with the traveling speed, and the branching power from the power branching mission 19 is transmitted via the one-way clutch 25 when not synchronized. Is transmitted.
[0018]
As shown in FIG.1 and FIG.2, the discharge | emission auger 28 for discharging | emitting the grain in the grain tank 12 outside the machine is the vertical cylinder 28a arrange | positioned in the rear end of the traveling body 1, and this vertical cylinder 28a. It consists of a horizontal cylinder 28b that is connected to the upper end so as to be vertically rotatable. A vertical screw conveyor 18a is housed in the vertical cylinder 28a, and a horizontal screw conveyor 18b is housed in the horizontal cylinder 28b.
[0019]
The vertical cylinder 28a is configured to be rotatable about a vertical axis by a drive motor 29 and a gear mechanism 30, and the horizontal cylinder 28b is an auger hydraulic cylinder 31 and a link mechanism 32 mounted between the vertical cylinder 28a. The vertical inclination angle can be changed.
[0020]
Then, the turning angle sensor 81 such as a rotary encoder provided in the drive motor 29 can detect the horizontal turning angle of the vertical cylinder 28 a and the horizontal turning position of the horizontal cylinder 28 b, and can be detected at the location of the auger hydraulic cylinder 31 or the link mechanism 32. A vertical rotation angle sensor 82 such as a potentiometer can be used to detect the vertical inclination angle of the horizontal cylinder 28b, and hence the height position of the discharge portion at the tip of the horizontal cylinder 28b.
[0021]
When the discharge auger 28 is not used, the middle part of the horizontal cylinder 28b is placed on a rest base 33 provided on the upper surface of the grain tank 12. A rest detector 34 such as a contact sensor for detecting whether or not the horizontal cylinder 28b is placed is attached to the rest base 33.
[0022]
Each of the left and right traveling crawlers 2 is wound around the outer periphery of a drive wheel 36 and a driven wheel 37 respectively disposed at the front and rear ends of the track frame 35 and a plurality of rolling wheels 38 disposed in the middle of the lower surface of the track frame 35. Each of the left and right track frames 35 and the traveling machine body 1 are connected to each other so that the traveling portion hydraulic cylinder 39a (39b) and the L-shaped front and rear levers provided at the front and rear positions of the track frame 35 are operated simultaneously. (Not shown) etc. are connected via a traveling part raising / lowering drive means.
[0023]
The left and right traveling unit hydraulic cylinders 39 a and 39 b are operated independently of each other so that the left and right traveling crawlers 2 can be raised and lowered independently with respect to the left and right of the traveling machine body 1.
[0024]
Therefore, when the piston rods of the hydraulic cylinders 39a, 39b for the left and right traveling parts are projected at the same time, the traveling machine body 1 moves upward (rises) from the left and right traveling crawlers 2, 2, and the traveling crawler 2 of the traveling machine body 1 , 2 relative height (vehicle height) increases. Conversely, when the piston rods are simultaneously retracted, the traveling machine body 1 approaches (lowers) the left and right traveling crawlers 2 and 2, and the relative height (vehicle height) of the traveling machine body 1 with respect to the traveling crawlers 2 and 2 is Lower.
[0025]
When the piston rod in the left traveling unit hydraulic cylinder 39a is protruded or the piston rod in the right traveling unit hydraulic cylinder 39b is retracted (or both operations are performed simultaneously), the right side The vehicle height of the traveling machine body 1 with respect to the traveling crawler 2 is lowered (the vehicle height of the traveling machine body 1 with respect to the left traveling crawler 2 is increased), and the traveling machine body 1 is inclined downwardly to the right.
[0026]
Conversely, when the piston rod in the right traveling unit hydraulic cylinder 39b is protruded, or when the piston rod in the left traveling unit hydraulic cylinder 39a is retracted (or both operations are performed simultaneously), The vehicle height of the traveling machine body 1 with respect to the left traveling crawler 2 is lowered (the vehicle height of the traveling machine body 1 with respect to the right traveling crawler 2 is increased), and the traveling machine body 1 is inclined downwardly to the left.
[0027]
A rotary encoder for detecting the relative height (vehicle height) of the traveling machine body 1 with respect to the left and right traveling crawlers 2 and 2 by detecting the protrusion amount of the piston rod of the hydraulic cylinders 39a and 39b for the left and right traveling units. The vehicle height sensors 41a and 41b are configured to interlock with each other via a connecting rod or a link mechanism (not shown) connected to the connecting rod. A tilt sensor 43 such as a pendulum type (gravity type) for detecting the left and right tilt angles of the traveling machine body 1 is disposed at an arbitrary position of the traveling machine body 1, for example, in the cab 11.
[0028]
In addition, as shown in FIG. 3, the ultrasonic sensors 44a and 44b for detecting the ground height between the pre-cutting processing device 4 and the field scene include a transmitter unit (horn unit) and a receiver unit of the receiver. Are arranged on brackets (not shown) provided on the back side of the grain raising device 6 on the left and right sides of the pre-cutting processing device 4.
[0029]
When the installation height of the ultrasonic sensors 44a and 44b and the installation height of the cutting blade device 5 are different, the ground height between the pre-cutting processing device 4 and the field scene is determined by a predetermined conversion from the detection values of the ultrasonic sensors 44a and 44b. You can ask for it.
[0030]
Further, the lifting position sensor 45 attached to the base end of the lifting frame 14 can determine the relative height between the traveling machine body 1 and the pre-cutting processing device 4 by detecting the rotation angle of the lifting frame 14. It is like that.
[0031]
As shown in FIG. 5, the hydraulic circuit for the hydraulic cylinders 9, 31, 39 a, 39 b is branched via a branch valve 47 that splits the pressure oil from the hydraulic pump 46. From the discharge path, pressure oil is fed to the first hydraulic circuit 48 to the auger hydraulic cylinder 31 and the left traveling section hydraulic cylinder 39a, and from the other discharge path, the cutting section lifting hydraulic cylinder 9 and Pressure oil is supplied to the second hydraulic circuit 49 for the right traveling unit hydraulic cylinder 39b.
[0032]
The hydraulic circuits 48, 49 are connected to electromagnetic control valves 50, 51, 52, 53, check valves, relief valves, etc. for the respective hydraulic cylinders 9, 31, 39a, 39b.
[0033]
Next, the configuration of various operation levers and switches provided in the cab 11 will be described with reference to FIGS. 6 and 7. A steering round handle 58 for steering the traveling machine body 1 is attached to a handle shaft (not shown) protruding upward from the front column cover body 57 in front of the driver seat 56. On the right side surface of the front column cover body 57, an accelerator lever 59 that can be rotated in the front-rear direction is provided.
[0034]
A liquid crystal display device 60 is attached to the upper end portion of the front column cover body 57 so as to be positioned on the inner diameter side of a substantially semicircular handle wheel 58a in the steering round handle 58 in plan view.
[0035]
Since the liquid crystal display device 60 is fixed only to the front column cover body 57 and is not connected to the steering round handle 58, the liquid crystal display device 60 does not move even if the steering round handle 58 is rotated. There is no such thing. Further, since the upper surface (screen) of the liquid crystal display device 60 is positioned below the handle wheel 58a of the steering round handle 58, the liquid crystal display device 60 is not touched even if the steering round handle 58 is rotated. It is supposed not to.
[0036]
On the left side of the driver's seat 56, a long side column 61 is disposed in the front and rear, and a vehicle height adjusting lever 62 that can manually change and adjust the vehicle height of the traveling machine body 1 is provided at a front end portion of the side column 61. A vehicle height control changeover switch 63 for switching between automatic operation and manual operation in vehicle height control, and an inclination setting device 64 for setting the left and right inclination angle of the traveling machine body 1 are arranged.
[0037]
On the side column 61, the rear part of the vehicle height adjusting lever 62 and the like are set to a main transmission lever 65 for continuously changing the vehicle speed, and the output and the rotational speed of the traveling drive unit 24 are set and maintained within a predetermined range according to the working state. The auxiliary transmission lever 66 is arranged in parallel to the left and right, and each of the levers 65 and 66 is configured to be rotatable forward and backward.
[0038]
Further, on the side column 61, various switches such as a cutting automatic elevating switch 131 and the like are disposed on the right side of the auxiliary transmission lever 66, and on the rear part of the auxiliary transmission lever 66, a cutting operation for cutting operation is performed. A lever 67 and a threshing lever 68 for threshing work are arranged so as to be able to rotate back and forth.
[0039]
The harvesting lever 67 is configured such that when it is tilted forward, the harvesting switch 134 for performing the harvesting operation is turned off, and when it is tilted backward, the harvesting switch 134 is turned on and actuated. Similarly, the threshing lever 68 is configured such that when the threshing lever 68 is tilted forward, the threshing switch 135 for executing the threshing operation is turned off, and when it is tilted backward, the threshing switch 135 is activated.
[0040]
An auto-lift switch 137 for forcibly raising the pre-cutting processing device 4 and an auto-set switch for forcibly lowering the pre-cutting processing device 4 to a predetermined cutting height are provided on the right side surface of the grip 65a of the main transmission lever 65. 138. On the right side of the front side surface of the grip portion 65a, a cutting lift lever 139 for manually operating the lifting and lowering movement of the pre-cutting processing device 4 is arranged, and on the left side, the handling depth position of the cereal is manually set. A handle depth adjusting lever 140 that can be changed and adjusted is disposed.
[0041]
As shown in FIGS. 6 and 7, the liquid crystal display device 60 includes a liquid crystal panel 60b as a monochrome dot matrix type display means capable of displaying information such as characters, symbols and images, and a case 60a for housing the liquid crystal panel 60b. It is configured.
[0042]
On the outer peripheral side of the liquid crystal panel 60b on the surface of the case 60a, a work lamp 70 that is turned on when the power switch 142 for turning on and off the entire combiner is turned on and the left and right for switching the screen display, etc. Two switches 71, 72, 73, 74 are provided. Each of these switches 71 to 74 is a so-called push switch that generates one ON pulse signal when the switch is pressed once, and is of a non-locking type. The liquid crystal panel 60b may be a color type.
[0043]
Inside the case 60a, on the back side of the liquid crystal panel 60b, a CAN controller unit as control means for controlling to display on the screen of the liquid crystal panel 60b image information corresponding to the mode being executed among the various modes of the combine. C5 (details will be described later) is built in.
[0044]
Next, the overall operation of the combine such as the vehicle speed, posture and height of the traveling machine 1, the discharge position of the discharge auger 28, and the like are controlled, and image information corresponding to the mode being executed (the state of the combine operation) is displayed on the liquid crystal panel 60b. A configuration of a control device for controlling to display on the screen will be described.
[0045]
An electronic control device 75 such as a microcomputer shown in FIG. 8 includes a plurality (5 in the embodiment) of CAN controller units C1, C2, C3, C4, and C5, and a CAN communication bus 76 that interconnects them. It consists of and. Each of the CAN controller units C1 and C5 includes a resistor (not shown) as a termination resistor that suppresses reflection of control data.
[0046]
Each of the CAN controller units C1 to C5 includes a CPU 77 for executing various arithmetic processes and controls, an EEPROM 78 as a non-volatile memory for storing each control program described later, a RAM 79 for temporarily storing various data and the like, and a clock as a timer function. In addition, an input / output interface (not shown) that transmits data by connecting to various input system external devices and output system external devices is provided.
[0047]
In each of the EEPROMs 78 of the CAN controller units C1 to C5, corresponding application control programs (software) S1, S2, S3, S4, and S5 are stored (stored) in advance (see FIG. 8).
[0048]
The application control program S1 is a control program that activates various actuators (for example, the hydraulic cylinder 9 for the cutting part) of the threshing device 3 and the pre-cutting processing apparatus 4, and the application control program S2 is the hydraulic cylinder 9 for the cutting part and the traveling machine body. The left and right traveling unit hydraulic cylinders 39a, 39b are operated to provide a control program for controlling the cutting height of the pre-cutting processing device 4 and the attitude and vehicle height control of the traveling machine body 1.
[0049]
The application control program S3 is a control program for controlling the output of the engine 15, and the application control program S4 is a control program for controlling the operation of the drive motor 29 and the auger hydraulic cylinder 31 in the discharge auger 28.
[0050]
The application control program S5 manages and controls input / output of all input / output external devices connected to the controller units C1 to C5, and displays image information corresponding to the mode being executed on the screen of the liquid crystal panel 60b. It is assumed that the control program controls the control displayed on
[0051]
Each EEPROM 78 also stores in advance a communication control program necessary for CAN communication and an input / output control program for transmitting control data (information) between the input / output external devices. The program is hierarchized so that the input / output control program is the base.
[0052]
As a guide, the CAN controller units C1 to C5 are combined and controlled so that the harness length of the input / output system external device is as short as possible, and a controller box (not shown) is arranged at each arrangement location. ).
[0053]
For example, the CAN controller unit C1 is installed on the lower surface side of the floor board in the cab 11 (see FIGS. 1 to 3). The input interface of the CAN controller unit C1 includes, as an input system external device, a lift position sensor 45, a culm transport sensor 96 for detecting whether or not the chopped cereal is being transported by the pre-cutting processing device 4, and a chopping during transport. The grain length sensor 97 for detecting the length of the grain length, the handling depth sensor 98, the auger clutch motor switch 99, the ultrasonic sensors 44a and 44b, the vehicle speed sensor 100, the No. 2 receiving screw conveyor rotation sensor 101, the steering circle A handle limit switch 102 and the like are connected to each other (see FIG. 9).
[0054]
In order to drive a control circuit unit 103 such as a relay unit in a handling depth control motor, a control circuit unit 104 such as a relay unit in an auger clutch motor, and a threshing clutch as output system external devices on the output interface of the CAN controller unit C1 Are connected to each other (see FIG. 9).
[0055]
The CAN controller unit C2 is installed in the upper part of the pre-cutting processing device 4 and at a location close to the cab 11 (see FIGS. 1 to 3). The input interface of the CAN controller unit C2 includes, as input system external devices, a fuel sensor 106, an inclination sensor 43, vehicle height sensors 41a and 41b, a soot flow rate sensor 107 in the cereal plate of the sorting device, and soot in each part of the sorting device.籾 sensor 108 for detecting presence / absence of discharge, clogging sensor 109 for discharging cutter, turning angle sensor 81, discharge auger tip operating portion 110 provided at the tip of the horizontal tube 28b to operate the turning of the discharge auger 28, and the like, An angle sensor 82, an auger clutch sensor 111, a discharge auger overload sensor 112, a peristaltic sorting overload sensor 113, a handling cylinder rotation sensor 114, a processing cylinder rotation sensor 115, and the like are connected to each other (see FIG. 10).
[0056]
The output interface of the CAN controller unit C2 includes, as output system external devices, a peristaltic selection drive motor 116, an FC clutch drive circuit unit 117, a drive motor 29 for horizontally turning the vertical cylinder 28a of the discharge auger 28, and a discharge auger brake 118. The electromagnetic solenoid 51a of the electromagnetic control valve 51 for the auger hydraulic cylinder 31, the electromagnetic solenoid 52a of the electromagnetic control valve 52 for the traveling hydraulic cylinder 39a on the left side of the traveling machine body 1, and the traveling hydraulic cylinder 39b on the right side of the traveling machine 1. Are connected to the electromagnetic solenoid 53a of the electromagnetic control valve 53, the electromagnetic solenoid 50a of the electromagnetic control valve 50 to the hydraulic cylinder 9 for cutting (see FIG. 10), and the like.
[0057]
As shown in FIGS. 1 to 3, the CAN controller unit C <b> 3 is installed in the rear part of the driver seat 56 in the cab 11. An input interface of the CAN controller unit C3 includes an engine speed sensor 119, an engine oil amount sensor 120, an engine water temperature sensor 121, and a fuel injection pump with an electronic governor that controls the output (load) of the engine 15 as input system external devices. The fuel injection pump rack position sensor 122 for detecting the rack position of the engine, the engine starter switch 123, the auger set position dial 124 for storing the horizontal turning position of the discharge auger 28 in advance, and the cab 11 provided in the cab 11 A discharge auger operation unit 125 for operating horizontal turning and the like, a cutting clutch motor limit switch 126, and the like are connected to each other (see FIG. 11).
[0058]
The output interface of the CAN controller unit C3 includes, as an output system external device, a fuel injection pump rack actuator 127 for adjusting the rack position of the fuel injection pump so that the rotational speed of the engine 15 becomes a predetermined rotational speed, an engine starter A relay 128, an alarm buzzer 129, and the like are connected to each other (see FIG. 11).
[0059]
The CAN controller unit C4 is installed in the side column 61 of the cab 11 (see FIGS. 1 to 3). The input interface of the CAN controller unit C4 includes, as input system external devices, an accelerator lever sensor 59a for detecting the operation position of the accelerator lever 59, a vehicle height adjustment lever 62, a vehicle height control changeover switch 63, a tilt setting device 64, Depth automatic control switch 130, automatic cutting / lifting switch 131, automatic cutting switch for cutting and cutting switch 134 for automatically transmitting power to the pre-cutting processing device 4 when the pre-cutting processing device 4 is lowered to a predetermined cutting height. Threshing switch 135, sorting adjustment dial 136 for adjusting the grain sorting state in the sorting device, auto lift switch 137, auto set switch 138, cutting lift lever 139, handling depth adjusting lever 140, auxiliary transmission lever 66, A reverse switch for moving the traveling machine 1 backward. 141, such as a power switch 142 are connected, respectively (see FIG. 12).
[0060]
The output interface of the CAN controller unit C4 is a vehicle height control change-over switch lamp 143 that is lit when the vehicle height control is switched to automatic operation as an output external device, and is lit when the handling depth control is switched to automatic operation. A processing depth automatic control switch lamp 144 is connected (see FIG. 12).
[0061]
The input interface of the CAN controller unit C5 built in the case 60a includes a cursor up switch 71 for moving the cursor on the screen of the liquid crystal panel 60b upward, and a cursor under for moving the screen downward. The movement switch 72 and the first and second change-over switches 73 and 74 for switching the screen display of the liquid crystal panel 60b are connected to each other (see FIG. 13).
[0062]
The output interface of the CAN controller unit C5 is connected to a liquid crystal panel 60b as a display means, a work lamp 70 that is turned on when a power switch 142 that turns on and off the entire combiner is turned on. (See FIG. 13).
[0063]
Next, mode switching control by the CAN controller unit C5 will be described. As shown in FIG. 14, the combine mode (operation state) includes an initial mode M1, a normal mode M2 for running on the road and various operations, an alarm display mode M3 for notifying an abnormal state of each part of the combine, a detection error, and the like. There are roughly divided into an error display mode M5 for notifying the content of an error and an environment setting mode M4 for setting automatic traveling control and the like.
[0064]
The normal mode M2 includes a non-work mode M2a for running on the road and a work mode M2b for cutting and threshing, and a maintenance mode M6 that can be shifted only from the non-work mode M2a is also set (FIG. 15). reference).
[0065]
First, when the power switch 142 is turned on and operated, the initial mode M1 is activated and the initial image information is displayed on the screen of the liquid crystal panel 60b.
[0066]
Next, when a preset time (10 seconds in the embodiment) elapses in the EEPROM 78 of the CAN controller unit C5, or when the rotation speed of the engine 15 becomes equal to or higher than the preset rotation speed (240 rpm in the embodiment) The normal mode M2 is automatically shifted to the non-work mode M2a (see FIG. 15), and the screen display of the liquid crystal panel 60b is changed from the initial image information to image information such as the engine speed and the remaining amount of fuel (non- Transition to image data corresponding to the work mode M2a (see FIG. 16).
[0067]
In this case, on the screen of the liquid crystal panel 60b, as image information of the non-working mode M2a, a speedometer 85 indicating the traveling speed (vehicle speed) of the traveling machine body 1, a substantially L-shaped rotational speed graph 86 indicating the engine rotational speed, A tank monitor 87 that informs the amount of fir in the grain tank 12, a fuel meter 88 that informs the remaining amount of fuel, a sub-transmission monitor 89 that informs the setting state of the sub-transmission lever 66, and the speed setting state of the pre-cutting processing device 4 A cutting speed change monitor 90 for notifying and an integrated value monitor 91 for indicating a value obtained by integrating the operating time of the engine 15 and the like are displayed.
[0068]
During execution of the initial mode M1, when the threshing clutch for power transmission to the threshing device 3 is engaged, that is, when the threshing switch 135 is activated, the alarm buzzer is switched to an alarm display mode M3 described later. 129 is sounded, and the image information of the handling cylinder is switched and displayed on the screen of the liquid crystal panel 60b. Although this does not mean that the handling cylinder is actually clogged, the operator can be notified that the threshing clutch is engaged by displaying the image information of the handling cylinder on the screen of the liquid crystal panel 60b instead. Thus, the engine is prevented from starting in this state.
[0069]
Then, when the threshing switch 135 is turned off, the alarm buzzer 129 stops sounding and shifts to the non-work mode M2a, and the display on the screen of the liquid crystal panel 60b returns to the image information of the non-work mode M2a described above (FIG. 16). reference).
[0070]
As shown in FIG. 15, when the threshing switch 135 is turned on and operated during the execution of the non-work mode M2a in the normal mode M2, the operation mode M2b is entered, and the display of the screen showing the image information in FIG. And image information such as the remaining amount of fuel (image data corresponding to the work mode M2b) (see FIG. 17). The image information of the work mode M2b is different from the image information of the non-work mode M2a only in that a load graph 86 ′ indicating the engine load is displayed in the display area of the engine speed graph 86 indicating the engine speed. Others are the same as in the non-working mode M2a.
[0071]
During the execution of the non-work mode M2a, the case 60a is operated under the condition that the engine speed is equal to or lower than a preset speed (1500 rpm in the embodiment) and the vehicle speed is stopped (the vehicle speed is 0.03 m / s or less in the embodiment). The two cursor movement switches 71 and 72 on the surface of the case 60 are simultaneously operated for an appropriate time (in the embodiment, 1 second) or more, and thereafter, the four switches 71 to 74 on the surface of the case 60a are simultaneously operated for an appropriate time (in the embodiment 5). When the operation is performed for more than (seconds), the operation mode shifts to the maintenance mode M6, and the image information of the maintenance mode M6 is switched and displayed on the screen of the liquid crystal panel 60b. In the maintenance mode M6, it is impossible to shift to another mode unless the power switch 142 is turned off once.
[0072]
As shown in FIG. 14, when various errors such as detection errors of sensors and setting devices and operation errors of various actuators occur during execution of the normal mode M2 (non-work mode M2a or work mode M2b). Then, a character indicator 92 of “error” blinks on the right side portion of the auxiliary transmission monitor 89 on the screen of the liquid crystal panel 60b (see FIG. 21). By blinking the error indicator 92, the operator can quickly recognize that an error has occurred on the screen showing the image information of the normal mode M2.
[0073]
In this state, when the first changeover switch 73 is pressed down for an appropriate time (in the embodiment, 5 seconds) or longer, the display shifts to the error display mode M5, and the screen display of the liquid crystal panel 60b shows the content of the error that has occurred at this time. Transition to information. Thereby, since the operator can confirm the details of the error when he / she desires, the working efficiency is improved and the safety during the driving operation is also increased.
[0074]
When the first changeover switch 73 is pressed once again during the error display mode M5 or when the error is eliminated, the error display mode M5 returns to the normal mode M2, and the normal screen Mb is displayed on the screen of the liquid crystal panel 60b. The image information of mode M2 is switched and displayed.
[0075]
When the second changeover switch 74 is pressed once during the execution of the normal mode M2, the screen shifts to the environment setting mode M4, and the display on the liquid crystal panel 60b changes from the image information of the normal mode M2 to the environment setting mode M4. Transition to image information. When the second changeover switch 74 is pressed again, the mode is switched to the normal mode M2, and the display on the liquid crystal panel 60b returns from the image information in the environment setting mode M4 to the image information in the normal mode M2. In the present embodiment, since the frequency of executing the environment setting mode M4 is low, the second changeover switch 74 is provided separately from the first changeover switch 73 so that the environment setting mode M4 is not inadvertently operated. ing.
[0076]
Next, setting of the engine speed automatic control mode according to the present invention will be described with reference to FIG. 18 which is a flowchart. The control for setting the control mode is executed by the electronic control unit 75 and is one item in the environment setting mode M4. Accordingly, the display of the screen of the liquid crystal panel 60b (the environment setting) is performed. When the cursor is placed on the “engine speed automatic control mode” portion (stage) in the setting item (mode M4) and the first changeover switch 73 is pressed (S1), a screen as shown in FIG. It is displayed on the panel 60b.
[0077]
On the right side of the screen in FIG. 19, there are at least four conditions (1) for vehicle speed automatic control (when there is a vehicle speed at which the vehicle is slowed down, Or a sensor that detects the operation position of the main transmission lever, when the main transmission lever detects a position other than the neutral position (neutral)), (2) the threshing clutch is engaged, and (3) the auger The clutch is engaged and (4) the auger automatic switch is ON) is displayed. By pressing the cursor up switch 71 or the cursor down switch 72, the cursor 150 is moved up and down, and the setting is desired. When the cursor 150 is positioned at the position (stage), the second changeover switch 74 is pressed to determine (select) a condition (S2). For example, if (3) the auger clutch condition is set, the portion is enclosed in a rectangle or displayed differently from the character font indicating other conditions (for example, white font), and the selected condition is identified. It is displayed (S3).
[0078]
The right side of the display of the condition in FIG. 19 is a place where a control type (mode) is selected and determined, and at least three control modes (types) (OFF, slow, quick) can be selected. . Initially, “slow” is displayed, and each time the cursor downward movement switch 72 is pressed once, the characters “quick” → “OFF” → “slow” are displayed cyclically. The operator selects a desired type (S4), and then presses the second changeover switch 74 to determine (S5).
[0079]
When it is confirmed that all the conditions (1) to (4) have been set and determined by the above procedure (S6: yes), it is possible to move to another item in the environment setting mode M4. Decide
Among the above three control modes (types), “OFF” means that automatic control for increasing the engine speed to the rated value is not executed (the engine is kept idling and maintained). When the “slow” mode is selected, the time is gradually increased to the rated speed over an appropriate time. In the embodiment, the speed is increased by 26 rpm every 100 ms (milliseconds) from the idling speed. It takes about 5 seconds.
[0080]
When the “quick” mode is selected, the speed rapidly increases from the idling speed to the rated speed in about an instant (0.5 seconds).
[0081]
Therefore, the conditions and control type for automatic control of the engine speed can be set finely according to the user's preference.
[0082]
For example, at the start of traveling or at the start of mowing and threshing, it is desired to increase the idling speed to the rated speed gently, but it is desirable to quickly discharge the grain in the grain tank, and A user who desires that automatic control (control to rotate the auger horizontal cylinder 28b from the rest base 33 in a predetermined direction by a predetermined angle) may not be performed at the rated rotation of the engine, as shown in FIG. ▼ Select “Slow” for the vehicle speed and ▲ 3 ▼ threshing clutch, ▲ 3 ▼ “Quick” for the auger clutch, ④ “OFF” (off) for the auger automatic control conditions It is sufficient to make the setting as follows. As a result, in the case of (1) and (2), since the rotational speed does not increase rapidly to the rated value, no impact is applied to the operator riding on the combine, and the position of the power transmission part (for example, belt and pulley) Since excessive force is not applied suddenly, the consumption of parts can be reduced.
[0083]
In the conventional automatic engine speed control, when any one of the above conditions (1) to (4) is satisfied, the engine speed is increased from the idling speed to the rated speed in a short time. Compared with the case where the automatic control is executed (the idling rotational speed is maintained when none of the conditions are satisfied), the user's preference can be precisely matched.
[0084]
If the setting operation is configured to be executed by the switches 71, 72, 73, 74 in the liquid crystal display means, it is possible to select many items without increasing the number of switches. When the liquid crystal type display means is not used, it may be executed by operating a predetermined switch (not shown).
[0085]
In another embodiment of the present invention, in a combine provided with an on / off discrimination sensor for a threshing clutch for turning on and off the power transmission to the threshing section and a control means for controlling the engine speed, the presence of the speed of the combine is detected. Or when the condition that the threshing clutch is engaged is not satisfied, the engine speed is controlled to be maintained in an idling state, while at least one of the two conditions is at least The user can select the OFF type that does not increase the engine speed, the slow type that increases the rated speed over a predetermined time, and the quick type that instantaneously increases the rated speed. It may be provided with a control means.
[0086]
The display switching mode on the screen of the liquid crystal panel 60b is not limited to that described above. For example, every time one of the four switches 71 to 74 provided on the liquid crystal display device 60 is pressed, the display is switched. It may be.
[0087]
For example, as shown in FIG. 4, a belt tension type clutch 151 is provided or a discharge auger is provided from the engine 15 to cut off the power from the traveling drive unit 24 or the power branching mission 19 to the pre-cutting processing device 4. When the power transmission to the belt is performed by the belt tension type clutch 152, conventionally, as shown in FIG. 20, an arm 155 of a tension pulley 154 that presses the belt 153 and a clutch motor 156 (a hydraulic motor may be used). In this case, only the spring member 157 is inserted between the output rod 158 and the output motor 158, and the clutch motor 156 is suddenly activated by a clutch engagement signal. The member 157 has insufficient impact mitigating action, pressing the belt 153 suddenly, and power transmission suddenly expands from 0 to a predetermined force. To give an impact to each component, together with the durability of components is deteriorated, there is a problem of equal even operation of the working machine is dangerous started rapidly.
[0088]
Therefore, the clutch motor 156 is operated by PMW (pulse width modulation) control. That is, if the pulse of the voltage applied to the clutch motor 156 (or the pulse of the hydraulic pressure supplied to the hydraulic motor) is controlled such that the duty ratio is lowered at the start of operation and gradually increased as the operation is completed (operation time). Can be operated so that the tension acting on the belt is initially weak and gradually strong, as in the case when the operator manually engages the clutch. Since it enters smoothly, the belt and other parts are not impacted, and at the end, the clutch-engaged state can be reliably maintained.
[0089]
The communication bus (line) in the present invention may use not only a CAN (Controller Area Network) protocol but also a LAN (Local Area Network) protocol. There may be a plurality of controllers as control means, or a single controller. Furthermore, the display device in the present invention is not limited to the liquid crystal display device 60 using the liquid crystal panel 60b, but may be a CRT display, an EL display, or the like.
[Brief description of the drawings]
FIG. 1 is a left side view of a combine.
FIG. 2 is a right side view of the combine.
FIG. 3 is a front view of the combine.
FIG. 4 is a skeleton diagram of a power transmission system.
FIG. 5 is a hydraulic circuit diagram.
FIG. 6 is a schematic plan view of a cab.
FIG. 7 is an enlarged plan view showing a steering round handle and a liquid crystal display device.
FIG. 8 is a functional block diagram of the entire control device.
FIG. 9 is a functional block diagram of a CAN controller unit C1.
FIG. 10 is a functional block diagram of a CAN controller unit C2.
FIG. 11 is a functional block diagram of a CAN controller unit C3.
FIG. 12 is a functional block diagram of a CAN controller unit C4.
FIG. 13 is a functional block diagram of a CAN controller unit C5.
FIG. 14 is a transition diagram of each mode.
FIG. 15 is a transition diagram of a normal mode.
FIG. 16 is a diagram showing a screen showing image information in a non-working mode.
FIG. 17 is a diagram showing a screen showing image information in a work mode.
FIG. 18 is a flowchart of an engine speed control mode.
FIG. 19 is a diagram showing a selection screen for an engine speed control mode.
FIG. 20 is a diagram showing a drive unit of a belt-type clutch.
[Explanation of symbols]
C1 to C5 CAN controller unit
S1-S5 application control program
M4 environment setting mode
1 Airframe
2,2 Traveling crawler
3 Threshing device
4 Cutting pre-treatment device
15 engine
28 discharge auger
56 Driver's seat
57 Front column cover
58 Steering round handle
60 Liquid crystal display devices
60a case
60b Liquid crystal panel as display means
70 work lamp
71 Cursor up switch
72 Cursor down switch
73 1st changeover switch
74 Second changeover switch
75 Controller
77 CPU

Claims (3)

In a combine equipped with an on / off discrimination sensor of a threshing clutch for turning on and off the power transmission to the threshing part, and a control means for controlling the engine speed,
When detecting that there is a vehicle speed of the combine, or when none of the conditions for entering the threshing clutch is satisfied, the engine speed is controlled to be maintained in an idling state,
For at least one of the two conditions,
At least an OFF type that does not increase the engine speed, and a slow type that increases the rated speed over a predetermined time,
A control device for a combine, comprising control means for allowing a user to select a quick type that instantaneously increases the speed to the rated speed. An on / off discrimination sensor for a threshing clutch that turns on and off the transmission of power to the threshing unit, an auger clutch sensor for an auger for discharging cereals, an automatic switch for automatically switching the operation of the auger, and a control for controlling the engine speed And a combine comprising:
When the combine speed is detected, or when the threshing clutch is engaged, or when the auger clutch is engaged or the auger automatic switch is not satisfied, the engine speed is set to the idling state. While controlling to hold,
For at least one of the four conditions,
At least an OFF type that does not increase the engine speed, and a slow type that increases the rated speed over a predetermined time,
A control device for a combine, comprising control means for allowing a user to select a quick type that instantaneously increases the speed to the rated speed. Display means for displaying information on various modes of the combine on the screen; and displaying a control setting screen for the engine speed control mode on the display means; The control device for a combine according to claim 1 or 2, wherein any one of the at least three types can be selected and set for one condition.

Images