JP5836216B2 - Control structure of ordinary combine - Google Patents

Description

  The present invention relates to a control structure for a normal combine that includes a threshing device and a grain discharging device that are operated by power from an engine, and an engine control unit that controls the operation of the engine.

  Crop crops harvested using ordinary combine harvesters are not only hard and difficult to damage such as rice and wheat, but also relatively soft and easy to damage such as beans such as soybeans and red beans. is there. Therefore, in the ordinary combine, the transmission system from the engine to the barrel is equipped with a barrel transmission that switches the driving speed of the barrel based on the operation of the threshing shift lever provided in the control unit. By configuring the drive speed so that it can be switched according to the type of crop to be harvested, there is one that can prevent the occurrence of inconvenience that easily damaged beans are damaged in the handling process and the quality of the beans is reduced ( For example, see Patent Document 1).

JP-A-10-75648 (paragraph number 0021, FIG. 5)

  By the way, as described in the above-mentioned Patent Document 1, it is common to adopt a screw conveying type as a grain discharging device equipped in a normal combine, so in a normal combine In addition to the above-described handling process, there is a risk that beans may be damaged in the grain discharging operation in which the beans stored in the grain tank are discharged from the grain tank to the outside by the grain discharging device.

  Therefore, in order to prevent the occurrence of inconvenience that beans are damaged in the grain discharging operation, a transmission device for discharging the grains is provided in the same manner as when preventing the occurrence of inconvenience that beans are damaged in the handling process. However, in this case, since it is necessary to newly equip a transmission for discharging the grain, the transmission structure becomes complicated and the cost increases.

  An object of the present invention is to prevent the occurrence of inconvenience that beans are damaged in the grain discharging operation without causing complication of the transmission structure and cost increase.

The invention according to claim 1 of the present invention is a control structure for an ordinary combine that includes a threshing device and a grain discharging device that are operated by power from an engine, and an engine control unit that controls the operation of the engine.
An accelerator operating tool for setting the engine speed, a command unit for instructing execution of the first work mode or the second work mode, and discharge for outputting information on switching between the discharge stop state and the discharge state of the grain discharge device An information output unit ,
When the command unit commands execution of the first work mode, the engine control unit sets the first set rotation speed set by the accelerator operating tool as the control target rotation speed of the engine, and outputs the engine. Controlling the operation of the engine so that the rotational speed does not exceed the first set rotational speed;
When the command unit commands execution of the second work mode, the engine control unit sets a second set rotation speed lower than the first set rotation speed as a control target rotation speed of the engine, and the engine Configured to control the operation of the engine so that the output rotational speed of the engine does not exceed the second set rotational speed ,
Information on the switching of the grain discharging device output by the discharge information output unit to the discharge state is included in the condition for the command unit to execute the second work mode .

  In the above invention, when harvesting a relatively hard and difficult-to-damage crop such as rice or wheat, the threshing device and the grain are set by the command unit so as to command the execution of the first work mode. The grain discharging apparatus can be operated at a high speed, whereby the handling process by the threshing apparatus and the grain discharging operation by the grain discharging apparatus can be performed efficiently.

  Also, when harvesting relatively soft and easily damaged crops such as beans, the threshing device and the grain discharging device are set at a slow speed by setting the command unit to command the execution of the second work mode. In this way, it is possible to prevent the occurrence of inconvenience that the beans are damaged in the handling process in the threshing apparatus and the grain discharging operation by the grain discharging apparatus.

  In addition, by changing the engine target rotation speed according to the crop to be harvested, it is possible to improve work efficiency in the case of rice and wheat and to prevent damage to beans in the case of beans. Therefore, it is possible to avoid complication of transmission structure and cost increase.

  Therefore, if the crop to be harvested is rice or wheat without complicating the transmission structure or increasing the cost, the crop to be harvested can be handled while being able to efficiently handle and discharge the grain. In the case of beans, it is possible to prevent the occurrence of inconvenience that the beans are damaged in the handling process and the grain discharging operation.

The invention according to claim 2 of the present invention is a control structure of a general combine comprising a threshing device and a grain discharging device that are operated by power from an engine, and an engine control unit that controls the operation of the engine.
An accelerator operating tool for setting the engine speed, and a command unit for commanding execution of the first work mode or the second work mode,
When the command unit commands execution of the first work mode, the engine control unit sets the first set rotation speed set by the accelerator operating tool as the control target rotation speed of the engine, and outputs the engine. Controlling the operation of the engine so that the rotational speed does not exceed the first set rotational speed;
When the command unit commands execution of the second work mode, the engine control unit sets a second set rotation speed lower than the first set rotation speed as a control target rotation speed of the engine, and the engine Configured to control the operation of the engine so that the output rotational speed of the engine does not exceed the second set rotational speed,
Setting a lower limit rotation speed of the engine in the second work mode;
When the command unit commands execution of the second work mode in a state where the second set rotation speed with respect to the first set rotation speed changed by the accelerator operating tool is lower than the lower limit rotation speed, the engine control section The lower limit rotational speed is set to the control target rotational speed of the engine, and the operation of the engine is controlled so that the output rotational speed of the engine does not exceed the lower limit rotational speed.

  In the above invention, when the command unit is set to command the execution of the second work mode, the engine output speed is limited to the second set speed that is lower than the lower limit speed. It is possible to prevent the occurrence of inconveniences such as the occurrence of unhandled waste in the handling process, or the work efficiency in the handling process and the grain discharging operation being significantly reduced due to the excessive decrease in the rotational speed of .

The invention according to claim 3 of the present invention is a control structure for an ordinary combine that includes a threshing device and a grain discharging device that are operated by power from an engine, and an engine control unit that controls the operation of the engine.
An accelerator operating tool for setting the engine speed, and a command unit for commanding execution of the first work mode or the second work mode,
When the command unit commands execution of the first work mode, the engine control unit sets the first set rotation speed set by the accelerator operating tool as the control target rotation speed of the engine, and outputs the engine. Controlling the operation of the engine so that the rotational speed does not exceed the first set rotational speed;
When the command unit commands execution of the second work mode, the engine control unit sets a second set rotation speed lower than the first set rotation speed as a control target rotation speed of the engine, and the engine Configured to control the operation of the engine so that the output rotational speed of the engine does not exceed the second set rotational speed,
Setting a threshold for execution of the second work mode;
When the command unit commands execution of the second work mode in a state where the first set rotation speed changed by the accelerator operating tool is lower than the threshold value, the engine control unit performs execution command of the second work mode. And the first operation mode is continued.

  In the above invention, when the command unit is set to command the execution of the second work mode, the output speed of the engine is limited to the second set speed lower than the first set speed lower than the threshold value. Due to the fact that the rotational speed of the working power is excessively reduced, unhandling occurs in the handling process or the work efficiency in the handling process and the grain discharging work is significantly reduced. Can be prevented.

The invention according to claim 4 of the present invention is the invention according to any one of claims 1 to 3,
A work mode selection unit that enables selection of a work mode for rice and a work mode for beans,
When the work mode selection unit selects the rice work mode, the execution of the first work mode is instructed. When the work mode selection unit selects the beans work mode, the second work mode is executed. The command unit is configured by the work mode selection unit.

  In the above invention, when the work mode selection unit selects the rice work mode, the threshing device and the grain discharging device can be surely operated at a fast speed for rice, and the work mode selection unit is used for beans. This mode of operation ensures that the threshing device and the grain discharging device can be operated at a slow speed for beans.

  Therefore, it is possible to prevent mistakes in selecting the work mode, and it is possible to prevent a decrease in work efficiency in handling processing and grain discharging work and damage of beans in handling processing and grain discharging work due to selection mistakes. can do.

The invention according to claim 5 of the present invention is a control structure of a general combine comprising a threshing device and a grain discharging device that are operated by power from an engine, and an engine control unit that controls the operation of the engine.
An accelerator operating tool for setting the engine speed, and a command unit for commanding execution of the first work mode or the second work mode,
When the command unit commands execution of the first work mode, the engine control unit sets the first set rotation speed set by the accelerator operating tool as the control target rotation speed of the engine, and outputs the engine. Controlling the operation of the engine so that the rotational speed does not exceed the first set rotational speed;
When the command unit commands execution of the second work mode, the engine control unit sets a second set rotation speed lower than the first set rotation speed as a control target rotation speed of the engine, and the engine Configured to control the operation of the engine so that the output rotational speed of the engine does not exceed the second set rotational speed,
A work mode selection unit that enables selection of a work mode for rice and a work mode for beans, and discharge information that outputs information on switching between a discharge stop state and a discharge state of the grain discharge device With an output section,
In the state where the work mode selection unit has selected the work mode for rice, the first information is information regarding the switching of the grain discharge device output by the discharge information output unit to the discharge state or the discharge stop state. In the state where the operation mode is an execution command and the operation mode for the beans is selected by the operation mode selection unit, the grain discharging device output by the discharge information output unit is related to switching to the discharge stop state. Information becomes an execution command of the first work mode, and information related to switching to the discharge state of the grain discharging device output by the discharge information output unit becomes an execution command of the second work mode, The command unit is configured by the work mode selection unit and the discharge information output unit.

  In the above invention, in the state where the work mode selection unit selects the rice work mode, the threshing device is reliably operated at a fast speed for rice during the harvesting operation when the grain discharge device is switched to the discharge stop state. Moreover, at the time of the grain discharging operation in which the grain discharging apparatus is switched to the discharging state, the grain discharging apparatus can be reliably operated at a high speed for rice.

  On the other hand, in the state where the work mode selection unit has selected the work mode for beans, the threshing device can be reliably operated at a fast speed for rice during the harvesting operation when the grain discharge device is switched to the discharge stop state, Moreover, at the time of the grain discharge | emission work which switched the grain discharge apparatus to the discharge | emission state, a grain discharge apparatus can be reliably operated at the slow speed for beans.

  Therefore, while avoiding mistakes in selecting the work mode, it is possible to improve the work efficiency in the handling treatment of rice and beans, and the rice grain discharge work, etc., and the damage of beans in the grain discharge work of beans. Can be prevented.

It is a left view of a normal type combine. It is a top view of a normal type combine. It is a cross-sectional top view of a boarding operation part. It is a vertical left side view of a threshing apparatus. It is the schematic which shows the transmission structure of a normal type combine. It is the schematic which shows the transmission structure of a grain discharge apparatus. It is a block diagram which shows a control structure. It is a top view of the principal part of a left operation panel. It is a perspective view of the principal part which shows an auxiliary operation panel.

  Hereinafter, the control structure of the ordinary combine according to the present invention will be described with reference to the drawings.

  As shown in FIGS. 1 and 2, the ordinary combine exemplified in the present embodiment cuts an uncut grain culm to be harvested that is located in front of the machine body at the left side of the front end portion of the traveling vehicle body 1 during work traveling. The cutting and conveying device 2 that conveys rearward is connected so as to be movable up and down while extending toward the front of the traveling vehicle body 1. The left half of the traveling vehicle body 1 receives the harvested cereal grains conveyed by the harvesting and conveying device 2 and applies the handling process to the granulated part of the harvested cereal grains while conveying it backwards. A threshing device 3 for performing a sorting process is installed. A grain tank 5 that stores grains lifted from the bottom of the threshing device 3 via the bucket conveyor 4 is mounted on the rear half of the right half of the traveling vehicle body 1. The rear end portion of the threshing device 3 is connected with a slaughtering device 6 that shreds the scouring waste after the threshing process and discharges it to the outside. The grain tank 5 is equipped with a screw conveying type grain discharging device 7 for discharging the grains stored in the grain tank 5 to the outside of the machine. And these are configured to harvest rice, wheat, or beans such as soybeans and red beans.

  As shown in FIGS. 1 to 3, the traveling vehicle body 1 is provided with a pair of left and right crawlers 9 at a lower portion of a vehicle body frame 8 configured by connecting a plurality of steel materials such as a square pipe material. A boarding operation unit 10 with a cabin is formed in the front half of the right half of the vehicle body frame 8, and a water-cooled diesel engine (hereinafter referred to as an engine) is provided at a position below a driver seat 11 provided at the rear of the boarding operation unit 10. 12) and the like are deployed.

  As shown in FIGS. 1 to 5, the cutting and conveying device 2 is configured to turn uncut cereals into cereals to be harvested and cereals not to be harvested as the aircraft travels at the left and right ends of the front end. A pair of left and right dividers 13 are provided. A rotary reel 14 is disposed above the front part of the cutting and conveying apparatus 2 so that the tip of the harvested grain culm divided by the left and right dividers 13 is scraped back. A clipper-shaped cutting mechanism 15 that cuts the stock source side of the harvesting cereal is provided at the bottom of the cutting and conveying device 2, and the harvested cereal that has been cut by the cutting mechanism 15 is placed behind the cutting mechanism 15. An auger drum 16 is provided that gathers at a predetermined position in the left-right direction and then feeds back from the predetermined position. And immediately behind the predetermined location, a feeder 17 comprising a slat conveyor is provided for feeding and conveying the harvested cereals fed rearward from the predetermined location toward the mash input port (not shown) of the threshing device 3. doing.

  The cutting and conveying apparatus 2 is a left-right feeder drive shaft that also serves as an input shaft of the cutting and conveying apparatus 2 provided at the rear end of the feeder 17 by the operation of a hydraulic lifting cylinder 18 installed over the body frame 8 and the feeder 17. It swings up and down around 19 as a fulcrum. The raising / lowering cylinder 18 is actuated by cutting and raising / lowering the operating pressure applied to the lifting / lowering cylinder 18 by swinging the cross-reverse and neutral return type control lever 20 provided in the front right part of the boarding operation unit 10 in the forward / backward direction. It is possible to control by switching the operation state of a valve unit (not shown) for use. That is, the cutting and conveying device 2 can be moved up and down by swinging the control lever 20 in the front-rear direction, and the cutting height adjustment for changing the height position of the cutting mechanism 15 with respect to the harvest target culm is performed. Can do.

  As shown in FIGS. 1, 2, 4, and 5, the threshing device 3 is a threshing unit 3 </ b> A that performs a handling process on the harvested cereal grains supplied and conveyed by the feeder 17, and a selection obtained by the handling process in the threshing unit 3 </ b> A. A sorting unit 3B that performs a sorting process on the target processing object, and a collecting unit 3C that collects the processing object to be collected obtained by the sorting process are provided.

  The threshing unit 3A rotates clockwise in front view with a front and rear handling cylinder shaft 23 as a fulcrum in a handling chamber 22 formed by arranging a U-shaped receiving net 21 and the like in the front-rear direction in the upper part of the threshing device 3. By doing so, a bar-type handling cylinder 24 that performs handling on the harvested cereal meal from the feeder 17 is provided.

  The sorting unit 3B is a swing sorting device 25 that swings and sorts a workpiece leaked from the receiving net 21 while moving it backward, a tang 26 that supplies a sorting wind for precise sorting to the swing sorting device 25, a swing The auxiliary tang 27 for supplying the sorting air for the rough sorting to the sorting device 25 and the No. 2 tang for supplying the sorting air for the second sorting to the swinging sorting device 25 are provided.

  The swing sorting device 25 includes a sheave case 30 that swings back and forth by the operation of an eccentric cam-type swing drive mechanism 29 provided at the lower portion thereof. On the upper part of the sheave case 30, a rough sorting gren pan 31, chaff sheave 32, and stroller 33 are arranged in that order from the front end of the sheave case 30 toward the rear. In the lower part of the sheave case 30, a fine pan 34, a fine sheave 35, and a second chaff sheave 36 for sorting the second product are arranged so as to be connected to each other in that order.

  The collection unit 3C includes a first collection unit 37 that collects the single-grained grains that have leaked from the front side of the swing sorting device 25 as the first thing below the swing sorting device 25, and a swing sorting device. The second collection unit 38 that collects the grain with branch branch and bifurcated grains that have leaked from the rear side of 25 as the second item is arranged so as to be lined up and down in that order.

  At the bottom of the number 1 collection unit 37, a number 1 transport screw 39 that transports the number 1 item flowing down to the bottom to the right is provided. At the bottom of the second collecting unit 30, a second conveying screw 40 is arranged for conveying the second item flowing down to the bottom to the right. At the right end of the No. 1 conveying screw 39, a bucket conveyor 4 for pumping the No. 1 item conveyed by the No. 1 conveying screw 39 to a supply port (not shown) provided in the upper part of the grain tank 5 is linked and connected. ing. The right end of the second transport screw 40 is interlocked with a screw transport type second reduction mechanism 41 that performs a handling process again on the second object transported by the second transport screw 40 and returns and transports it to the rough sorting grain pan 31. It is connected.

  As shown in FIG. 1, FIG. 2 and FIG. 6, the grain discharging device 7 is a grain tank that stores grains stored in the grain tank 5 by a carry-out screw 43 arranged in the front-rear direction at the bottom of the grain tank 5. 5 to the rear of the bottom. Moreover, the grain which the carrying-out screw 43 carried out is pumped up by the lifting screw conveyor 44 interlocked with the carrying-out screw 43. Then, the discharge screw conveyor 46 connected to the upper end portion of the lifting screw conveyor 44 through the relay screw conveyor 45 carries out the grains lifted by the lifting screw conveyor 44 to the outside of the machine.

  The discharge screw conveyor 46 is configured so as to be able to perform an up-and-down operation using the relay screw conveyor 45 as a fulcrum and a turning operation using the lifting screw conveyor 44 as a fulcrum. It can be easily changed.

  As shown in FIGS. 5 and 6, the power from the engine 12 is generated by a belt-type first transmission 47, a hydrostatic continuously variable transmission (hereinafter referred to as HST) 48 equipped as a main transmission, and The power is transmitted to the left and right crawlers 9 via a traveling transmission system 50 built in the transmission case 49. Further, it is transmitted to the carp 26 through a belt-type second transmission device 51. Further, it is transmitted to the grain discharging device 7 via a belt tension type discharging clutch 52 or the like.

  Although illustration is omitted, the traveling transmission system 50 is a gear-type sub-transmission device that shifts the power after shifting by the HST 48 in two levels, and transmission of the power after shifting by the sub-transmission device to the corresponding crawler 9. It comprises a pair of left and right side clutches that are intermittent and a pair of left and right turning units that operate during turning.

  As shown in FIGS. 4 and 5, the power transmitted to the carp 26 is transmitted from the left end of the carp 26 to the sub-carp 27 and the second carp 28 via the belt-type third transmission device 53, and It is transmitted to the rejection shredding device 6 via the third transmission device 53 and the belt-type fourth transmission device 54. Further, the speed is transmitted from the right end of the carp 26 to the left and right idler shaft 56 via a belt-type first reduction device 55.

  The power transmitted to the idler shaft 56 is decelerated and transmitted from the left end portion of the idler shaft 56 to the first transport screw 39 and the second transport screw 40 via the belt-type second reduction device 57, and the second transport screw. 40 is decelerated and transmitted to the swing drive mechanism 29 of the swing sorting device 25 via a belt-type fifth transmission device 58. Further, it is transmitted from the left end portion of the idler shaft 56 to the handling cylinder 24 via a belt tension type threshing clutch 59 and a bevel gear type handling cylinder transmission device 60. Further, the power is transmitted from the left end portion of the idler shaft 56 to the feeder drive shaft 19 via the belt tension type cutting clutch 61.

  The power transmitted to the feeder drive shaft 19 is transmitted to the left and right first relay shaft 64 via the chain-type sixth transmission device 63, and the cutting mechanism is connected from the first relay shaft 64 via the mechanical linkage device 65. 15, and is transmitted from the first relay shaft 64 to the auger drum 16 via the chain-type seventh transmission device 66. Then, it is transmitted from the auger drum 16 to the rotary reel 14 via a chain-type eighth transmission device 67, a second relay shaft 68 facing left and right, and a belt-type continuously variable transmission 69.

  The feeder drive shaft 19 is transmitted with the reverse rotation power taken out from the bevel gear 70 for taking out the reverse rotation power provided in the barrel transmission device 60 through the reverse rotation shaft 71 in the left-right direction via the belt tension type reverse clutch 72. can do. From this configuration, when the harvesting and conveying device 2 is clogged with the harvesting and conveying device 2 during operation, the harvesting and conveying device 2 is operated by turning off the harvesting clutch 61 and turning on the reverse clutch 64. Reverse rotation drive can be performed, and this makes it easy to remove the harvested cereal meal and the like clogged in the harvesting and conveying apparatus 2.

  As shown in FIGS. 3, 7, and 8, the engine 12 includes a common rail fuel injection device 73 that electronically controls the fuel injection amount and injection timing. The fuel injection device 73 includes a supply pump 75 that pumps fuel stored in the fuel tank 74, a common rail 76 that accumulates the pumped fuel, a plurality of injectors 77 that injects the accumulated fuel into a fuel chamber (not shown), and a common rail 76. The pressure sensor 78 for detecting the internal pressure of the engine, the electromagnetic pickup type rotation sensor 79 for detecting the output rotational speed of the engine 12, and the supply pump 75 and the injectors 77 based on the outputs of the pressure sensor 78 and the rotation sensor 79, etc. An engine electronic control unit (hereinafter referred to as an engine ECU) 80 as an engine control unit for controlling the operation is provided.

  The engine ECU 80 is configured using a microcomputer including a CPU, an EEPROM, and the like. The engine ECU 80 includes an accelerator control means 80A for controlling the fuel injection amount and the injection timing based on the output of an accelerator dial 82 composed of a rotary potentiometer provided as an accelerator operating tool A on the left operation panel 81 of the boarding operation unit 10. , Etc.

  When the accelerator control means 80A detects a pressing operation of the auto accelerator switch 83 formed of a momentary switch provided in the left operation panel 81 of the boarding operation unit 10, the accelerator control means 80A detects the pressing operation of the rotation sensor 79 and the accelerator dial 82 each time the pressing operation is detected. Based on the output, automatic accelerator control for controlling the operation of the supply pump 75, each injector 77, etc. so as to maintain the output rotational speed of the engine 12 at the control target rotational speed (contains within the dead zone width of the control target rotational speed). It is configured to switch between a state to be executed and a state not to be executed.

  As shown in FIGS. 1, 3, 7, and 9, an auxiliary operation panel 86 is provided on the left front pillar 85 of the cabin 84 in the boarding operation unit 10. The auxiliary operation panel 86 includes a crop selection switch 87 including a momentary switch that is a work mode selection unit B that enables selection of a work mode for rice, a work mode for wheat, and a work mode for beans. It has.

  Inside the cabin 84, a wired remote control tool 88 that enables operations related to the operation of the grain discharging device 7 is provided so as to be able to be taken out of the cabin. The remote control tool 88 includes a discharge switch 89 including a momentary switch for instructing switching of the grain discharging device 7 to a discharging state, and a momentary switch for instructing switching of the grain discharging device 7 to a discharging stop state. Equipped with a discharge stop switch 90 and the like. The discharge switch 89 and the discharge stop switch 90 constitute a discharge information output unit C that outputs information related to switching between the discharge stop state and the discharge state of the grain discharge device 7.

  The traveling vehicle body 1 is equipped with a traveling / working electronic control unit (hereinafter referred to as a main ECU) 91 configured using a microcomputer having a CPU, an EEPROM and the like. When the main ECU 91 detects a pressing operation of the crop selection switch 87, each time the pressing operation is detected, a work mode to be executed as a control operation related to the work is set as a rice work mode, a wheat work mode, and a bean use. The operation mode switching unit 91 </ b> A configured to turn on the display lamps 92 to 94 corresponding to each of the operation modes and the discharge state switching command output by the discharge switch 89. Based on the discharge stop state switching command output from the discharge stop switch 90, the operation of the electric discharge clutch motor 95 is controlled so that the discharge clutch 52 switches to the connected state. A grain discharge control unit 91 that controls the operation of the electric discharge clutch motor 95 so as to switch to a state. , And a like.

  The engine ECU 80 and the main ECU 91 are connected so that they can communicate with each other by in-vehicle communication such as CAN (Controller Area Network) communication. Thereby, information from the rotation sensor 79 and the accelerator dial 82 input to the engine ECU 80 can be transmitted to the main ECU 91, and conversely, a crop selection switch 87, a discharge switch 89, and a discharge stop switch input to the main ECU 91. 90, etc. can be transmitted to the engine ECU 80.

  The crop selection switch 87, the discharge switch 89, and the discharge stop switch 90 are configured to function as a command unit D that instructs the engine ECU 80 to execute the first work mode or the second work mode. The command unit D switches the discharge state switching command output by the discharge switch 89 and the discharge stop state switch output by the discharge stop switch 90 when the crop selection switch 87 selects the rice work mode or the wheat work mode. The command is output to engine ECU 80 via main ECU 91 as an execution command for the first work mode. In addition, when the bean work mode is selected by the crop selection switch 87, the discharge stop state switching command output by the discharge stop switch 90 is output to the engine ECU 80 via the main ECU 91 as the execution command of the first work mode. In addition, a discharge state switching command output by the discharge switch 89 is output to the engine ECU 80 via the main ECU 91 as an execution command for the second work mode.

  When the command unit D commands the execution of the first work mode in a state in which the automatic accelerator control is performed, the engine ECU 80 sets the first set rotational speed corresponding to the operation position of the accelerator dial 82 based on the command to the control target rotation. The output rotational speed of the engine 12 detected by the rotation sensor 79 is maintained at the first set rotational speed that is the control target rotational speed at this time (contains within the dead band width of the first set rotational speed). Thus, the first automatic accelerator control for controlling the operation of the supply pump 75, each injector 77, and the like is executed. Further, when the command unit D commands execution of the second work mode in a state where the automatic accelerator control is performed, the value is lower than the first set rotational speed corresponding to the operation position of the accelerator dial 82 based on the command. In this way, the second set speed, which is a value obtained by reducing the first set speed by the setting ratio (for example, a value that is 75% of the first set speed), is set as the control target speed, and the rotation sensor 79 detects it. The supply pump 75, each injector 77, etc., so that the output rotational speed of the engine 12 is maintained at the second set rotational speed that is the control target rotational speed at this time (contains within the dead zone width of the second set rotational speed). The second automatic accelerator control for controlling the operation is executed.

  On the other hand, when the command unit D commands execution of the first work mode in a state where the automatic accelerator control is not performed, the first set rotational speed corresponding to the operation position of the accelerator dial 82 is set to the control target rotational speed based on the command. The operation of the supply pump 75 and each injector 77 is controlled so that the output rotational speed of the engine 12 detected by the rotation sensor 79 does not exceed the first set rotational speed that is the control target rotational speed at this time. It is configured. Further, when the command unit D commands execution of the second work mode in a state where the automatic accelerator control is not performed, the value is lower than the first set rotational speed corresponding to the operation position of the accelerator dial 82 based on the command. In this way, the second set speed, which is a value obtained by reducing the first set speed by the setting ratio (for example, a value that is 75% of the first set speed), is set as the control target speed, and the rotation sensor 79 detects it. The operation of the supply pump 75 and each injector 77 is controlled so that the output rotational speed of the engine 12 does not exceed the second set rotational speed that is the control target rotational speed at this time.

  In the state which selected the work mode for rice or the work mode for wheat with the crop selection switch 87 from said structure, at the time of the harvesting operation which switched the grain discharge apparatus 7 to the discharge stop state, the cutting and conveying apparatus 2 and the threshing The apparatus 3 can be reliably operated at a fast speed for rice and wheat, and the grain discharging device 7 is reliably used for rice and wheat during the grain discharging operation when the grain discharging device 7 is switched to the discharging state. Can be operated at a fast speed.

  On the other hand, in the state in which the work mode for beans is selected by the crop selection switch 87, the harvesting and conveying device 2 and the threshing device 3 are reliably used for rice and wheat during the harvesting operation in which the grain discharging device 7 is switched to the discharge stopped state. In the grain discharging operation in which the grain discharging device 7 is switched to the discharging state, the grain discharging device 7 can be reliably operated at the slow speed for beans.

  In other words, while making it easy to select the work mode according to the crop to be harvested and preventing mistakes in selecting the work mode, the harvesting, handling, and sorting of rice, wheat, and beans, and the rice and wheat In addition, it is possible to improve the work efficiency in the grain discharging operation of the beans, and to prevent the beans from being damaged in the grain discharging operation of the beans due to the use of the screw conveying type grain discharging device 7. .

  As shown in FIGS. 7 and 9, the main ECU 91 is rotated by controlling the operation of an electric reel speed change motor 96 that shifts a belt type continuously variable transmission 69 that changes the rotation speed of the rotary reel 14. A reel rotation control unit 91 </ b> C for controlling the rotation speed of the reel 14 is provided. The auxiliary operation panel 86 has a reel shift selection switch comprising a momentary switch that enables switching between the first control mode and the second control mode of the control mode related to the shift of the rotating reel 14 executed by the reel rotation control unit 91C. 97, and a setting dial 98 for a rotating reel comprising a rotary potentiometer that enables the setting change of the control target speed of the rotating reel 14 and the control target ratio between the vehicle speed and the rotating speed of the rotating reel 14. Yes.

  When detecting the pressing operation of the selection switch 97, the reel rotation control unit 91C switches between a state in which the first control mode is executed and a state in which the second control mode is executed each time the pressing operation is detected. In the execution state of the first control mode, the output of the setting dial 98 is received as the control target rotation speed of the rotary reel 14 and is set regardless of the output of the electromagnetic pickup type vehicle speed sensor 99 that detects the vehicle speed of the traveling vehicle body 1. Based on the control target rotation speed of the rotary reel 14 output from the dial 98 and the output of the electromagnetic pickup type reel sensor 100 that detects the rotation speed of the rotary reel 14, the rotation speed of the rotary reel 14 is maintained at the control target rotation speed. The operation of the reel speed change motor 96 is controlled so as to be within the dead band width of the control target rotational speed. In the execution state of the second control mode, the output of the setting dial 98 is received as a control target ratio between the vehicle speed and the rotation speed of the rotating reel 14, and the control target ratio output from the setting dial 98, the output of the vehicle speed sensor 99, and Based on the output of the reel sensor 100, the operation of the reel speed change motor 96 is controlled so that the ratio between the vehicle speed and the rotational speed of the rotary reel 14 is maintained at the control target ratio (contains within the dead band width of the control target ratio). To do.

  As shown in FIGS. 3, 7 and 9, the main speed change lever 101 provided on the left operation panel 81 so as to be able to swing back and forth is provided with a rotational speed increase comprising a momentary switch for instructing an increase in the rotational speed of the rotary reel 14. A rotation speed reduction switch 103 including a switch 102 and a momentary switch for instructing a reduction in the rotation speed of the rotary reel 14 is provided.

  When the reel rotation control unit 91 </ b> C detects the pressing operation of the rotation speed increase switch 102 based on the output of the rotation speed increase switch 102 in the execution state of the first control mode, the reel rotation control unit 91 </ b> C rotates while detecting the pressing operation. When the operation of the reel speed change motor 96 is controlled so that the number of rotations of the reel 14 continuously increases and the release of the pressing operation of the number-of-rotations increase switch 102 is detected based on the output of the number-of-rotations increase switch 102, the detection is performed. Along with this, the operation of the reel speed change motor 96 is controlled so that the rotation speed of the rotary reel 14 automatically decreases to the control target rotation speed set by the setting dial 98. In addition, when the pressing operation of the rotation speed reduction switch 103 is detected based on the output of the rotation speed reduction switch 103, the reel is configured so that the rotation speed of the rotary reel 14 continuously decreases while the pressing operation is detected. When the operation of the transmission motor 96 is controlled and release of the pressing operation of the rotation speed reduction switch 103 is detected based on the output of the rotation speed reduction switch 103, the rotation speed of the rotary reel 14 is set by the setting dial 98 along with the detection. The operation of the reel speed change motor 96 is controlled so as to automatically increase to the set control target rotational speed.

  On the other hand, when the pressing operation of the rotation speed increase switch 102 is detected based on the output of the rotation speed increase switch 102 in the execution state of the second control mode, the rotation speed of the rotary reel 14 is detected while the pressing operation is detected. When the release operation of the rotation speed increase switch 102 is detected based on the output of the rotation speed increase switch 102, the operation of the reel speed change motor 96 is controlled so that the vehicle speed increases continuously. The operation of the reel speed change motor 96 is controlled so that the rotation speed of the rotary reel 14 is automatically reduced until the ratio of the rotation speed of the rotary reel 14 reaches the control target ratio set by the setting dial 98. In addition, when the pressing operation of the rotation speed reduction switch 103 is detected based on the output of the rotation speed reduction switch 103, the reel is configured so that the rotation speed of the rotary reel 14 continuously decreases while the pressing operation is detected. When the operation of the transmission motor 96 is controlled and the release of the pressing operation of the rotation speed reduction switch 103 is detected based on the output of the rotation speed reduction switch 103, the ratio between the vehicle speed and the rotation speed of the rotary reel 14 is detected. The operation of the reel speed change motor 96 is controlled so that the rotational speed of the rotary reel 14 automatically increases until the control target ratio set by the setting dial 98 is reached.

  Incidentally, the reel rotation control unit 91C may be configured as follows.

(1) When the release of the pressing operation of the rotation speed increase switch 102 is detected based on the output of the rotation speed increase switch 102 in the execution state of the first control mode, the rotating reel 14 at the stage where the release of the pressing operation is detected. The rotation of the reel speed change motor 96 is controlled so that the rotation speed of the rotary reel 14 automatically decreases to the control target rotation speed set by the setting dial 98.
Further, when the release of the pressing operation of the rotation speed reduction switch 103 is detected based on the output of the rotation speed reduction switch 103 in the execution state of the first control mode, the rotation reel 14 at the stage where the release of the pressing operation is detected is detected. After maintaining the rotational speed for a set time, the operation of the reel speed change motor 96 is controlled so that the rotational speed of the rotary reel 14 automatically increases to the control target rotational speed set by the setting dial 98.
On the other hand, in the execution state of the second control mode, when the release of the pressing operation of the rotation speed increase switch 102 is detected based on the output of the rotation speed increase switch 102, the rotation reel 14 at the stage where the release of the pressing operation is detected is detected. After maintaining the rotational speed for a set time, the rotational speed of the rotary reel 14 automatically decreases until the ratio between the vehicle speed and the rotational speed of the rotary reel 14 reaches the control target ratio set by the setting dial 98. The operation of the reel speed change motor 96 is controlled.
Further, when release of the pressing operation of the rotation speed reduction switch 103 is detected based on the output of the rotation speed reduction switch 103 in the execution state of the second control mode, the rotation reel 14 at the stage where the release of the pressing operation is detected is detected. After maintaining the rotation speed for a set time, the rotation speed of the rotary reel 14 automatically increases until the ratio between the vehicle speed and the rotation speed of the rotary reel 14 reaches the control target ratio set by the setting dial 98. The operation of the reel speed change motor 96 is controlled.

(2) When the pressing operation of the rotation speed increase switch 102 is detected based on the output of the rotation speed increase switch 102 in the execution state of the first control mode or the second control mode, while the pressing operation is detected, The operation of the reel speed change motor 96 is controlled so that the rotational speed of the rotary reel 14 increases stepwise.
Further, when the pressing operation of the rotation speed reduction switch 103 is detected based on the output of the rotation speed reduction switch 103 in the execution state of the first control mode or the second control mode, the rotation is performed while the pressing operation is detected. The operation of the reel speed change motor 96 is controlled so that the number of rotations of the reel 14 decreases stepwise.

(3) In the execution state of the first control mode or the second control mode, when the pressing operation of the rotation speed increase switch 102 is detected based on the output of the rotation speed increase switch 102, while the pressing operation is detected, As the number of rotations of the rotating reel 14, an increased number of rotations obtained by adding the set number of rotations to the number of rotations of the rotating reel 14 at the stage when the pressing operation is detected, or the speed of the rotating reel 14 at the stage where the pressing operation is detected. The operation of the reel speed-changing motor 96 is controlled so as to obtain a speed increasing rotational speed obtained by increasing the rotational speed by a set ratio.
Further, when the pressing operation of the rotation speed reduction switch 103 is detected based on the output of the rotation speed reduction switch 103 in the execution state of the first control mode or the second control mode, the rotation is performed while the pressing operation is detected. As the number of rotations of the reel 14, a reduced number of rotations obtained by subtracting a set number of rotations from the number of rotations of the rotating reel 14 when the pressing operation is detected, or the number of rotations of the rotating reel 14 when the pressing operation is detected. The operation of the reel speed-changing motor 96 is controlled so that the reduced speed of rotation reduced by a set ratio is obtained.

  As shown in FIGS. 3, 7, and 9, the main ECU 91 has a lever sensor 105 including a rotary potentiometer that detects the operation position of the forward / backward swing type work clutch lever 104 provided in the left operation panel 81. Based on the output, the operation of the electric threshing clutch motor 106 that switches the threshing clutch 59 between the connected state and the disconnected state, and the operation of the electric chopping clutch motor 107 that switches the harvesting clutch 61 between the connected state and the disconnected state are controlled. A clutch control unit 91D is provided.

  When the clutch control unit 91D detects an operation from the cut position of the work clutch lever 104 to the threshing-in position based on the output of the lever sensor 105, the threshing clutch 59 remains in the disconnected state while the reaping clutch 61 maintains the disconnected state. If the operation of the work clutch lever 104 from the threshing-in position to the cutting-off position is detected so as to switch to the connected state, the reaping clutch 61 is switched from the disconnected state to the connected state while the threshing clutch 59 is maintained in the connected state. The operation of the threshing clutch motor 106 and the reaping clutch motor 107 is controlled so as to change. On the other hand, when the operation of the work clutch lever 104 from the cutting position to the threshing position is detected based on the output of the lever sensor 105, the chopping clutch 61 is disconnected from the connected state while the threshing clutch 59 is maintained in the connected state. When the operation of the work clutch lever 104 from the threshing-in position to the cutting position is detected, the threshing clutch 59 is switched from the connected state to the disconnected state while the cutting clutch 61 is maintained in the disconnected state. The operation of the threshing clutch motor 106 and the mowing clutch motor 107 is controlled.

  As shown in FIGS. 1, 2, 7, and 9, a vertically swinging reverse rotation clutch that enables switching between a connected state and a disconnected state of the reverse rotation clutch 72 between the cabin 84 and the feeder 17. The lever 108, a check pin 109 that can be switched between a protruding state that prevents the swinging operation of the reverse clutch lever 108 from the cut position to the enter position and an allowable retracted state, and an electric type that is used to move the check pin 109 back and forth. A reverse clutch check motor 110 is provided.

  The main ECU 91 includes a check control unit 91 </ b> E that controls the operation of the reverse clutch check motor 110 based on the outputs of the accelerator dial 82 and the lever sensor 105.

  Based on the output of the accelerator dial 82 and the lever sensor 105, the check control unit 91E sets the set rotational speed of the engine 12 to a predetermined low speed rotational speed (for example, idling rotational speed), and the work clutch lever 104 is Only when it is detected that both are not operated to the cutting entry position, the check pin 109 is switched from the protruding state to the retracted state, and the swinging operation of the reverse clutch lever 108 from the cut position to the entry position is permitted. In other cases, the operation of the reverse clutch check motor 110 is controlled so that the check pin 109 is maintained in the protruding state and the swing operation of the reverse clutch lever 108 from the cut position to the start position is prevented.

  That is, only when the set rotational speed of the engine 12 is a predetermined low-speed rotational speed and the reaping clutch 61 is in the disconnected state, the reaping and transporting device 2 is allowed to be driven in reverse by operating the reverse clutch lever 108. The feeder 17 and the like of the cutting and conveying device 2 are clogged while avoiding the possibility that the cutting and conveying device 2 is driven to rotate in reverse at a high speed and that both the normal rotation power and the reverse rotation power are transmitted to the cutting and conveying device 2. It is configured so that it can be easily removed.

  Incidentally, you may comprise as follows as a structure regarding the reverse drive of the cutting conveyance apparatus 2. FIG.

(1) A separation detection sensor (not shown) including, for example, a limit switch that detects separation of the reverse rotation clutch lever 108 from the disengaged position, and a buzzer or alarm for notifying that the operation of the reverse rotation clutch lever 108 is inappropriate. An alarm (not shown) such as a lamp is provided, and the restraint control unit 91E determines that the set speed of the engine 12 is a predetermined low speed (for example, idling speed) based on the outputs of the accelerator dial 82 and the lever sensor 105. And when the working clutch lever 104 is not operated to the cutting position, the release of the reverse clutch lever 108 from the cut position is determined based on the output of the release detection sensor. Is detected, the alarm is activated to notify that the reverse clutch lever 108 is improperly operated.

(2) Provided with an indicator (not shown) such as a lamp for notifying that the switching operation of the reverse clutch lever 108 from the disengaged position to the engaged position is possible, and the restraint control unit 91E includes an accelerator dial 82 and a lever sensor Based on the output of 105, both the set rotational speed of the engine 12 is set to a predetermined low speed rotational speed (for example, idling rotational speed) and the work clutch lever 104 is not operated to the cutting position. Only when it is detected, the alarm is activated to notify that the reverse clutch lever 108 can be switched from the disengaged position to the engaged position.

(3) A separation detection sensor (not shown) including, for example, a limit switch that detects separation of the reverse rotation clutch lever 108 from the cut position, and automatic operation of the work clutch lever 104 from the cutting position to the threshing position is possible. And an actuator (not shown) such as an electromagnetic cylinder, and the main ECU 91 is provided with a cutting reversal control unit (not shown) for controlling the operation of the actuator based on the output of the separation detection sensor. When the sensor detects the release of the reverse clutch lever 108 from the disengaged position, based on this detection, the accelerator control means 80A of the engine ECU 80 reduces the output speed of the engine 12 to a predetermined low speed (for example, idling speed). It is automatically lowered, and the cutting reverse rotation control unit of the main ECU 91 operates the actuator. Manipulating the threshing containing position from the work clutch lever 104 reaper containing position by.

(4) A separation detection sensor (not shown) including, for example, a limit switch that detects separation of the reverse clutch lever 108 from the disengagement position is provided, and the accelerator control means 80A of the engine ECU 80 outputs the acceleration dial 82 and the lever sensor 105. Based on the above, it is detected that the set rotational speed of the engine 12 is set to a predetermined low-speed rotational speed (for example, idling rotational speed) and that the work clutch lever 104 is not operated to the cutting position. In the case where there is not, if the release of the reverse clutch lever 108 from the disengagement position is detected based on the output of the release detection sensor, the fuel injection is stopped and the engine 12 is stopped.

    [Another embodiment]

[1] The accelerator operating tool A may be configured by an accelerator lever configured to be capable of holding a position and a lever sensor including a rotary potentiometer that detects an operation position of the accelerator lever.

[2] The command unit D is configured by the work mode selection unit B (crop selection switch 87), and when the work mode selection unit B selects the rice work mode or the wheat work mode, the first work mode is executed. It may be configured to instruct execution of the second operation mode when the operation mode selection unit B selects the operation mode for beans.

[3] The discharge information output unit C includes a discharge clutch lever that enables switching between the connected state and the disconnected state of the discharge clutch 52, and a rotary potentiometer or limit switch that detects the operation position of the discharge clutch lever. You may comprise from the lever sensor for discharge clutch levers. Further, it may be constituted by a discharge clutch sensor including a limit switch that detects switching between the connected state and the disconnected state of the discharge clutch 52.

[4] The discharge information output unit C may be configured by a storage detection sensor including a limit switch that detects the arrival of the discharge screw conveyor 46 in the grain discharge device 7. In this configuration, for example, reaching the storage position of the discharge screw conveyor 46 is switched to the discharge stop state of the grain discharge device 7, and detachment from the storage position of the discharge screw conveyor 46 is the discharge state of the grain discharge device 7. It is conceivable to switch to.

[5] The grain discharge port of the discharge screw conveyor 46 in the grain discharge device 7 is provided with a shutter that opens and closes the grain discharge port, and a shutter sensor that detects the operating state of the shutter. The output unit C may be configured. In this configuration, the shutter open state may be the discharge state of the grain discharge device 7, and the shutter closed state may be the discharge stop state of the grain discharge device 7.

[6] When the command unit D commands the execution of the second work mode, the engine control unit 80 has a value lower than the first set rotational speed corresponding to the operation position of the accelerator dial 82 based on the command. In this way, the second set rotational speed that is reduced by the set rotational speed from the first set rotational speed may be set as the control target rotational speed.

[7] In the state where the lower limit rotational speed of the engine 12 in the second work mode is set and the second set rotational speed with respect to the first set rotational speed changed by the accelerator operating tool A is lower than the lower limit rotational speed, the command unit D When the execution of the two work mode is instructed, the engine control unit 80 sets the lower limit rotational speed to the control target rotational speed of the engine 12, and operates the engine 12 so that the output rotational speed of the engine 12 does not exceed the lower limit rotational speed. You may comprise so that it may control.
In this configuration, the handling by the threshing device 3 that hinders the harvesting of the crop in the cutting and conveying apparatus 2 due to the output rotational speed of the engine 12 being limited to the second set rotational speed that is lower than the lower limit rotational speed. It is possible to prevent the occurrence of inconveniences such as unhandling in the processing, sorting accuracy in the sorting process in the threshing device 3 is reduced, or work efficiency in the handling process and the grain discharging operation is significantly reduced. .

[8] When a threshold value related to execution of the second work mode is set and the command unit D commands execution of the second work mode in a state where the first set rotational speed changed by the accelerator operating tool A is below the threshold value, engine control is performed. The unit 80 may be configured to ignore the execution command for the second work mode and continue the first work mode.
In this configuration, the output rotation speed of the engine 12 is limited to the second setting rotation speed lower than the first setting rotation speed below the threshold value, which hinders crop harvesting in the cutting and conveying device 2. Occurrence of inconveniences such as unhandled items occurring in the handling process in the threshing device 3, reduction in sorting accuracy in the sorting process in the threshing device 3, or significant reduction in work efficiency in the handling process and the grain discharging operation. Can be prevented.

  The control structure of the ordinary combine according to the present invention includes a threshing device and a grain discharging device that are operated by power from an engine, an engine control unit that controls the operation of the engine, and the like, and harvests rice, soybeans, and the like. It can be applied to an ordinary combine that is configured to perform.

DESCRIPTION OF SYMBOLS 3 Threshing apparatus 7 Grain discharge apparatus 12 Engine 80 Engine control part A Accelerator operation tool B Work mode selection part C Discharge information output part D Command part

Claims (5)

In the control structure of a normal combine equipped with a threshing device and a grain discharging device that are operated by power from the engine, and an engine control unit that controls the operation of the engine,
An accelerator operating tool for setting the engine speed, a command unit for instructing execution of the first work mode or the second work mode, and discharge for outputting information on switching between the discharge stop state and the discharge state of the grain discharge device An information output unit ,
When the command unit commands execution of the first work mode, the engine control unit sets the first set rotation speed set by the accelerator operating tool as the control target rotation speed of the engine, and outputs the engine. Controlling the operation of the engine so that the rotational speed does not exceed the first set rotational speed;
When the command unit commands execution of the second work mode, the engine control unit sets a second set rotation speed lower than the first set rotation speed as a control target rotation speed of the engine, and the engine Configured to control the operation of the engine so that the output rotational speed of the engine does not exceed the second set rotational speed ,
A control structure for a normal combine that includes information on switching to the discharge state of the grain discharge device output by the discharge information output unit in a condition for the command unit to execute the second work mode . In the control structure of a normal combine equipped with a threshing device and a grain discharging device that are operated by power from the engine, and an engine control unit that controls the operation of the engine,
An accelerator operating tool for setting the engine speed, and a command unit for commanding execution of the first work mode or the second work mode,
When the command unit commands execution of the first work mode, the engine control unit sets the first set rotation speed set by the accelerator operating tool as the control target rotation speed of the engine, and outputs the engine. Controlling the operation of the engine so that the rotational speed does not exceed the first set rotational speed;
When the command unit commands execution of the second work mode, the engine control unit sets a second set rotation speed lower than the first set rotation speed as a control target rotation speed of the engine, and the engine Configured to control the operation of the engine so that the output rotational speed of the engine does not exceed the second set rotational speed ,
Setting a lower limit rotation speed of the engine in the second work mode;
When the command unit commands execution of the second work mode in a state where the second set rotation speed with respect to the first set rotation speed changed by the accelerator operating tool is lower than the lower limit rotation speed, the engine control section The control of the ordinary combiner configured to control the operation of the engine so that the output rotational speed of the engine does not exceed the lower limit rotational speed by setting the lower limit rotational speed to the control target rotational speed of the engine Construction. In the control structure of a normal combine equipped with a threshing device and a grain discharging device that are operated by power from the engine, and an engine control unit that controls the operation of the engine,
An accelerator operating tool for setting the engine speed, and a command unit for commanding execution of the first work mode or the second work mode,
When the command unit commands execution of the first work mode, the engine control unit sets the first set rotation speed set by the accelerator operating tool as the control target rotation speed of the engine, and outputs the engine. Controlling the operation of the engine so that the rotational speed does not exceed the first set rotational speed;
When the command unit commands execution of the second work mode, the engine control unit sets a second set rotation speed lower than the first set rotation speed as a control target rotation speed of the engine, and the engine Configured to control the operation of the engine so that the output rotational speed of the engine does not exceed the second set rotational speed ,
Setting a threshold for execution of the second work mode;
When the command unit commands execution of the second work mode in a state where the first set rotation speed changed by the accelerator operating tool is lower than the threshold value, the engine control unit performs execution command of the second work mode. A control structure of a normal combine that is configured to continue the first working mode while ignoring the above . A work mode selection unit that enables selection of a work mode for rice and a work mode for beans,
When the work mode selection unit selects the rice work mode, the execution of the first work mode is instructed. When the work mode selection unit selects the beans work mode, the second work mode is executed. The control structure of the normal combine according to any one of claims 1 to 3, wherein the command unit is configured by the work mode selection unit. In the control structure of a normal combine equipped with a threshing device and a grain discharging device that are operated by power from the engine, and an engine control unit that controls the operation of the engine,
An accelerator operating tool for setting the engine speed, and a command unit for commanding execution of the first work mode or the second work mode,
When the command unit commands execution of the first work mode, the engine control unit sets the first set rotation speed set by the accelerator operating tool as the control target rotation speed of the engine, and outputs the engine. Controlling the operation of the engine so that the rotational speed does not exceed the first set rotational speed;
When the command unit commands execution of the second work mode, the engine control unit sets a second set rotation speed lower than the first set rotation speed as a control target rotation speed of the engine, and the engine Configured to control the operation of the engine so that the output rotational speed of the engine does not exceed the second set rotational speed ,
A work mode selection unit that enables selection of a work mode for rice and a work mode for beans, and discharge information that outputs information on switching between a discharge stop state and a discharge state of the grain discharge device With an output section,
In the state where the work mode selection unit has selected the work mode for rice, the first information is information regarding the switching of the grain discharge device output by the discharge information output unit to the discharge state or the discharge stop state. In the state where the operation mode is an execution command and the operation mode for the beans is selected by the operation mode selection unit, the grain discharging device output by the discharge information output unit is related to switching to the discharge stop state. Information becomes an execution command of the first work mode, and information related to switching to the discharge state of the grain discharging device output by the discharge information output unit becomes an execution command of the second work mode, A control structure of a normal combine in which the command unit is configured by the work mode selection unit and the discharge information output unit .

Images