JP6211477B2 - Combine - Google Patents

Description

  The present invention relates to a combine.

  Conventionally, the technique of a combine provided with a hand-operated switch is well-known (for example, patent document 1). However, if the hand switch is always on due to a failure, etc., the hand switch may not be operated, and there is a risk of shifting to the hand mode against the operator's intention. Therefore, there is a risk that it is difficult to perform the handling operation stably.

Japanese Utility Model Publication No. 05-80227

  In the present invention, even when the hand switch is always on due to a failure or the like, the hand switch is not operated, and the user enters the hand mode against the operator's intention. The present invention provides a combine that can prevent such a situation and can perform a handling operation stably.

  The combine according to claim 1, wherein the harvesting clutch that transmits or interrupts the power of the driving source to the harvesting part is in the “cut” state, and the threshing clutch that transmits or interrupts the power of the driving source to the threshing part is “on”. In the state, when the handling operation tool is operated from OFF to ON, by starting the feed chain, the threshing unit and the feed chain are driven in the handling mode in which the cutting unit is stopped. And the control device is in the ON state when the threshing clutch is in the “ON” state and the reaping clutch is operated from “ON” to “OFF”. In such a case, abnormality determination is performed, the feed chain is not started, and the operation mode is not shifted.

  In the combine according to claim 2, the harvesting clutch that transmits or shuts off the power of the driving source to the harvesting part is in the “cut” state, and the threshering clutch that transmits or shuts off the power of the driving source to the thresher is “on”. In the state, when the handling operation tool is operated from OFF to ON, by starting the feed chain, the threshing unit and the feed chain are driven in the handling mode in which the cutting unit is stopped. And the control device is in the ON state when the harvesting clutch is in the “disconnected” state and the threshing clutch is operated from “OFF” to “ON”. In such a case, abnormality determination is performed, the feed chain is not started, and the operation mode is not shifted.

In the combine according to claim 3,
After the abnormality determination, the control device cancels the abnormality determination when the handling operation tool is turned off.

  In the combine according to claim 4, the handling operation tool includes a plurality of operation tools, and when the handling operation tool is operated from OFF to ON, all the operation tools are turned off. This is a case where it is operated to ON, and the case where the handling operation tool is in the ON state is a case where at least one of the operation tools is in the ON state.

In the combine according to claim 5 ,
The plurality of operation tools are connected in parallel to the control device.

In the combine according to claim 6 ,
A display unit that displays that the abnormality determination is being performed is provided.

  The present invention shifts to the handling mode against the operator's intention without operating the handling operation tool even when the handling operation tool is always on due to failure or the like. This is advantageous in that the handling operation can be stably performed.

The left view of a combine. The figure which shows the power transmission system of a combine. The block diagram which showed the control structure of the combine. (A) The figure which shows a working clutch lever, (b) The figure which shows the relationship between various operation tools and a handling mode. The flowchart at the time of shifting to the handling mode. The block diagram which showed the control structure of the handling switch when a handling switch was comprised by the some switch part.

  First, the overall configuration of the combine 1 will be described.

  As shown in FIG. 1, the combine 1 includes an engine 3, a traveling unit 10, a cutting unit 20, a feed chain 30, a threshing unit 40, a grain discharging unit 60, a control unit 90, a control device 100, and the like. The combine 1 drives the traveling unit 10, the cutting unit 20, the feed chain 30, the threshing unit 40, and the grain discharging unit 60 by the power of the engine 3 that is a driving source.

  The traveling unit 10 is provided in the lower part of the body 2. The traveling unit 10 includes a crawler traveling device 11 having a pair of left and right crawlers.

  The cutting part 20 is provided at the front part of the machine body 2 so as to be lifted and lowered. The cutting unit 20 includes a weeding tool 21, a pulling unit 22, a cutting conveyance unit 23, a cutting unit 24, and the like. The cutting unit 20 divides the cereals in the field by the weeding tool 21, causes the cereals after weeding to be caused by the pulling unit 22, and conveys the cereals after the raising by the cutting and conveying unit 23 while cutting the cutting unit. It cut | disconnects by 24, and the cereal grain after cutting | disconnection is further conveyed toward the feed chain 30 by the cutting conveyance part 23 further back.

  The feed chain 30 is provided on the left side of the machine body 2. The feed chain 30 inherits the harvested culm that has been conveyed from the harvesting unit 20 and conveys it backward.

  The threshing unit 40 is disposed on the upper left side of the machine body 2. As shown in FIGS. 1 and 2, the threshing unit 40 includes a handling cylinder 41, a swing sorter 42, a tang fan 43, a processing cylinder 44, a dust fan 45, a waste chain 46, a waste cutter 47, and a conveyor 48.・ Has 49, 50, 52 etc.

  The handling cylinder 41 threshs the cereals conveyed by the feed chain 30. The processed product threshed by the handling cylinder 41 is selected by a receiving net (not shown) in the process of falling. The unprocessed material that has not been threshed by the handling cylinder 41 is conveyed from the handling chamber to the processing chamber via the dust feed port and processed by the processing cylinder 44. The processed material by the processing cylinder 44 is sorted by a processing cylinder network (not shown) in the process of dropping. The processed material dropped from the processing cylinder to the receiving tray is conveyed forward by the reduction conveyor 52 and falls from the front end of the reduction conveyor 52.

  The processed material dropped from the receiving net, the processing drum net, and the reduction conveyor 52 is subjected to rocking sorting (specific gravity sorting) by the rocking sorter 42 and then wind-sorted by the tang fan 43. Of the materials that have been wind-sorted by the Kara fan 43, the first product is conveyed to the first cereal cylinder (not shown) by the first conveyor 48, and then the grain is conveyed by the cereal conveyor 49 of the first cereal cylinder. It is conveyed to the Glen tank 61 of the discharge unit 60. Of the items selected by the wind fan 43, the second item is taken out by the second conveyor 50. The second product taken out by the second conveyor 50 is returned to the upper surface side of the swing sorter 42 via a second reduction cylinder (not shown) and the second processing unit 51 and re-sorted.

  Swarf and dust in the degranulated material from the handling drum 41 are discharged to the outside by the sorting air from the Kara fan 43. Dust discharged at the rear of the swing sorter 42 is discharged out of the apparatus by a dust discharge fan 45. On the rear end side of the feed chain 30, an exhaust chain 46 is disposed. The waste (the grain from which the grain has been threshed) inherited from the rear end side of the feed chain 30 to the waste chain 46 is discharged out of the machine in a long state or provided on the rear side of the threshing unit 40 After being cut to a suitable length by the waste cutter 47, it is discharged out of the machine.

  The grain discharging unit 60 is provided on the upper right side of the machine body 2. The grain discharge unit 60 includes a grain tank 61, a discharge auger 62, conveyors 63, 64, 65, and the like. The Glen tank 61 is disposed on the right rear side of the machine body 2. A discharge auger 62 is connected to the grain tank 61. The discharge auger 62 projects forward from the rear part of the glen tank 61 at the upper part of the machine body 2. A discharge port 62 a for discharging the grain is formed at the tip of the discharge auger 62. A bottom conveyor 63 is provided in the Glen tank 61. A vertical conveyor 64 is installed in the vertical auger cylinder of the discharge auger 62, and a discharge conveyor 65 is installed in the horizontal auger cylinder. The grains in the grain tank 61 are conveyed through the discharge auger 62 by the conveyors 63, 64, and 65, and discharged from the discharge port 62a of the discharge auger 62 to the outside of the machine.

  Below, with reference to FIG. 2, the power transmission system of the combine 1 is demonstrated.

  The power of the engine (diesel engine) 3 is branched and transmitted from the output shaft 70 of the engine 3 in two directions: the mission case 71, the cutting unit 20, and the threshing unit 40. Further, other power of the engine 3 is transmitted from the output shaft 72 of the engine 3 to the discharge auger 62.

  The branching power from the output shaft 70 toward the mission case 71 is transmitted to the input shaft 73 of the mission case 71. The power transmitted to the input shaft 73 is transmitted to the cutting PTO shaft 74 protruding from the transmission case 71, and then transmitted to the cutting unit 20 via a belt tension type cutting clutch 75.

  The branching power from the output shaft 70 of the engine 3 toward the threshing unit 40 is transmitted to the tang shaft 43a of the tang fan 43 through the belt tension type threshing clutch 76. A part of the power transmitted to the tang shaft 43a is transmitted by the belt 77 and pulley transmission, the first conveyor 48, the cereal conveyor 49, the second conveyor 50, the reduction conveyor 52, the swing shaft 42a of the swing sorter 42, This is transmitted to the dust removal shaft 45 a of the dust removal fan 45 and the waste cutter 47.

  Further, power is transmitted from the flange shaft 43a to the front end of the feed chain 30 through the feed chain clutch 78 and the feed chain shaft 30a. Further, the power from the Karatsu shaft 43 a is also transmitted to the cylinder input shaft 79. The power transmitted to the handling cylinder input shaft 79 is branched and transmitted in the two directions of the handling cylinder 41 and the processing cylinder 44. The branching power from the handling cylinder input shaft 79 to the handling cylinder 41 is transmitted to the rotating shaft 41 a of the handling cylinder 41 and the waste chain 46. The branching power from the handling cylinder input shaft 79 to the processing cylinder 44 is transmitted to the rotating shaft 44 a of the processing cylinder 44 via the processing cylinder input shaft 80. The branching power is also transmitted from the processing cylinder input shaft 80 to the rotating shaft 51 a of the second processing unit 51.

  The power from the output shaft 72 of the engine 3 toward the discharge auger 62 is transmitted through the gear mechanism 81 and the power interrupting auger clutch 82 in the vertical auger cylinder in the bottom conveyor 63 and the discharge auger 62 in the Glen tank 61. The power is transmitted to the conveyor 64, and then the power is transmitted to the discharge conveyor 65 in the horizontal auger cylinder of the discharge auger 62 via the transfer screw 83.

  Below, the control part 90 is demonstrated.

  As shown in FIG. 1, the control unit 90 is provided on the front side of the airframe 2. As shown in FIG. 1 and FIG. 3, a driver's seat 91, a steering handle 92, a main transmission lever 93 (main transmission operation tool), an auxiliary transmission lever 94 (sub transmission operation tool), a work clutch lever Various operation tools such as 95 (work clutch operation tool) and a hand handling switch 96 (hand handling tool) are provided.

  A main transmission lever 93 which is a main transmission operation tool is an operation tool capable of changing the rotational speed of the engine 3. The main transmission lever 93 of the present embodiment changes the rotational speed of the engine 3 by changing the inclination angle of the swash plate of the hydraulic pump of the hydraulic continuously variable transmission. The main transmission lever 93 can be operated in a neutral position in a substantially vertical position, a forward side that is tilted forward relative to the neutral, and a reverse side that is tilted backward relative to the neutral. The main body 2 is stopped by operating the main transmission lever 93 to neutral. The machine body 2 moves forward by operating the main transmission lever 93 forward. When the main transmission lever 93 is operated to the reverse side, the airframe 2 moves backward. When the main transmission lever 93 is operated forward (reverse), the greater the inclination angle of the main transmission lever 93, the higher the rotational speed of the engine 3 and the higher the forward speed (reverse speed) of the body 2. A first detector 93 a that detects the operation position of the main transmission lever 93 is connected to the main transmission lever 93. In the present embodiment, the main transmission operating tool is constituted by a main transmission lever 93 which is a lever type operating tool. However, the present invention is not limited to this, for example, a dial type operating tool or a pedal type operating tool. You may comprise with an operation tool etc.

  The auxiliary transmission lever 94 which is an auxiliary transmission operation tool is an operation tool for setting a gear position. The sub-transmission lever 94 of the present embodiment operates the sub-transmission device, and the output and rotation speed of the hydraulic continuously variable transmission are set to high speed (travel speed), standard (travel speed and work speed), and low speed (work speed). ), And 4 speeds of neutral (stop). A second detection unit 94 a that detects an operation position of the sub transmission lever 94 is connected to the sub transmission lever 94. In the present embodiment, the auxiliary transmission operating tool is configured by the auxiliary transmission lever 94 that is a lever-type operating tool. However, the present invention is not limited to this, and is configured by, for example, a dial-type operating tool. May be.

  As shown in FIGS. 3-4 (b), the work clutch lever 95 which is a work clutch operating tool can be operated in the threshing position, the cutting position, and the stop position. The work clutch lever 95 is connected to a third detection unit 95 a that detects the operation position of the work clutch lever 95. In the present embodiment, the work clutch operating tool is configured by a work clutch lever 95 that is a lever-type operating tool. However, the present invention is not limited to this, and is configured by, for example, a dial-type operating tool. May be.

  When the work clutch lever 95 is operated to the threshing position, the reaping clutch 75 enters the “cut” state and the threshing clutch 76 enters the “on” state. When the work clutch lever 95 is operated to the cutting position, the cutting clutch 75 enters the “on” state and the threshing clutch 76 enters the “on” state. When the work clutch lever 95 is operated to the stop position, the reaping clutch 75 enters the “disengaged” state and the threshing clutch 76 enters the “disengaged” state. The feed chain 30 is interlocked with the cutting unit 20 in principle. As a result, the feed chain clutch 78 that transmits or shuts off the power of the engine 3 to the feed chain 30 is in the “disengaged” state when the work clutch lever 95 is in the threshing position and the stop position, and the work clutch lever 95 is in the cutting state. When in position, it is in the “ON” state.

  When the cutting clutch 75 is operated to the “ON” state, the power of the engine 3 can be transmitted to the cutting unit 20, and when the cutting clutch 75 is operated to the “OFF” state, the power of the engine 3 is transferred to the cutting unit. 20 cannot be transmitted. A first actuator 75 a that drives the cutting clutch 75 is connected to the cutting clutch 75. When the threshing clutch 76 is operated to the “ON” state, the power of the engine 3 can be transmitted to the threshing unit 40, and when the threshing clutch 76 is operated to the “OFF” state, the power of the engine 3 is changed to the threshing unit. 40 cannot be transmitted. The threshing clutch 76 is connected to a second actuator 76 a that drives the threshing clutch 76. When the feed chain clutch 78 is operated to the “on” state, the power of the engine 3 can be transmitted to the feed chain 30. When the feed chain clutch 78 is operated to the “off” state, the power of the engine 3 is fed. The transmission to the chain 30 becomes impossible. A third actuator 78 a that drives the feed chain clutch 78 is connected to the feed chain clutch 78.

  A handling switch 96 that is a handling operation tool is an operation tool for performing a handling operation, and is configured to be capable of ON / OFF operation. In the present embodiment, the hand-operated operation tool is configured by a hand-operated switch 96 that is a switch-type operation tool. However, the present invention is not limited to this, for example, a lever-type operation tool or a dial-type operation tool. You may comprise an operation tool, a pedal-type operation tool, etc.

  Hereinafter, the control device 100 will be described with reference to FIG.

  The control device 100 is connected to the first detection unit 93a, and can detect the operation position of the main transmission lever 93 by receiving a signal from the first detection unit 93a. The control device 100 is connected to the second detection unit 94a, and can detect the operation position of the auxiliary transmission lever 94 by receiving a signal from the second detection unit 94a. The control device 100 is connected to the third detection unit 95a, and can detect the operation position of the work clutch lever 95 by receiving a signal from the third detection unit 95a. The control device 100 is connected to the hand switch 96 and can detect the operation state of the hand switch 96.

  The control device 100 is connected to the first actuator 75a, and can operate the first actuator 75a to turn on and off the cutting clutch 75. The control device 100 is connected to the second actuator 76a, and the threshing clutch 76 can be turned on and off by operating the second actuator 76a. The control device 100 is connected to the third actuator 78a, and can turn the feed chain clutch 78 on and off by operating the third actuator 78a.

  Below, with reference to FIG. 5, the procedure when a handling operation is performed is demonstrated.

  In step S1, the control device 100 determines whether or not the work clutch lever 95 is operated to the threshing position. That is, the control device 100 determines whether or not the cutting clutch 75 and the feed chain clutch 78 are in the “disengaged” state and the threshing clutch 76 is in the “on” state. When the control device 100 determines that the work clutch lever 95 has not been operated to the threshing position (step S1, No), the state of step S1 is continued. When it is determined by the control device 100 that the work clutch lever 95 has been operated to the threshing position (Yes in Step S1), the process proceeds to Step S2.

  In step S2, the control device 100 determines whether the hand switch 96 is in the ON state or the OFF state when the work clutch lever 95 is operated to the threshing position. When the control device 100 determines that the hand switch 96 is in the OFF state (step S2, OFF), the process proceeds to step S3. If the control device 100 determines that the hand switch 96 is in the ON state (step S2, ON), the process proceeds to step S5.

  In step S3, the control device 100 determines whether or not the hand switch 96 has been operated from OFF to ON after the work clutch lever 95 has been operated to the threshing position. If it is determined by the control device 100 that the hand switch 96 has not been turned on and is turned off (No in step S3), the state of step S3 is continued. When it is determined by the control device 100 that the hand switch 96 has been turned ON (step S3, Yes), the process proceeds to step S4.

  In step S4, the control device 100 shifts the feed chain clutch 78 from the “disengaged” state to the “on” state and activates the feed chain 30 to shift to the handling mode (see FIG. 4B). The said handling mode means the state which drives the threshing part 40 and the feed chain 30 in the state which stopped the cutting part 20. FIG. When shifting to the handling mode, the mowing clutch 75 is in the “disengaged” state, and the feed chain clutch 78 and the threshing clutch 76 are in the “on” state. By shifting to the handling mode, the operator can perform handling operations.

  As shown in step S5, the control device 100 performs abnormality determination when the hand switch 96 is in the ON state when the work clutch lever 95 is operated to the threshing position. For example, if the hand switch 96 is in the ON state when the work clutch lever 95 is operated from the reaping position to the threshing position, the control device 100 performs an abnormality determination. In addition, when the work clutch lever 95 is operated from the stop position to the threshing position and the hand switch 96 is in the ON state, the control device 100 performs an abnormality determination.

  As shown in step S <b> 6, when the abnormality determination is made, the control device 100 maintains the “off” state of the feed chain clutch 78, does not activate the feed chain 30, and does not shift to the handling mode. In this case, the mowing clutch 75 and the feed chain clutch 78 are in the “disengaged” state, and the threshing clutch 76 is in the “on” state. Therefore, the cutting unit 20 and the feed chain 30 are stopped, and the cutting unit 20 is driven.

  As shown in step S <b> 7, the control device 100 determines whether or not the hand switch 96 has been turned OFF after performing the abnormality determination. When it is determined by the control device 100 that the hand switch 96 is not turned OFF and is turned ON (No at Step S7), the state of Step S7 is continued. When it is determined by the control device 100 that the handling switch 96 has been turned off (step S7, Yes), the abnormality determination is canceled and the process proceeds to step S1. Thereby, after cancellation of the abnormality determination, it is possible to shift to the handling mode through the steps S1 to S4.

  As shown in steps S <b> 1 to S <b> 4, the control device 100 activates the feed chain 30 when the hand switch 96 is operated from OFF to ON while the work clutch lever 95 is in the threshing position. To shift to the handling mode. That is, the control device 100 activates the feed chain 30 when the harvesting clutch 75 is in the “disengaged” state, the threshing clutch 76 is in the “on” state, and the hand switch 96 is operated from OFF to ON. To shift to the handling mode.

  When the mode is shifted to the handling mode, when the sub-shift lever 94 is operated neutrally, the airframe 2 is stopped regardless of the operation position of the main shift lever 93. Thereby, the handling operation is performed in a state where the machine body 2 is stopped. Further, when the mode is shifted to the handling mode, when the auxiliary transmission lever 94 is operated at a high speed, a standard speed, or a low speed, the machine body 2 moves forward, reverse, etc. corresponding to the operation position of the main transmission lever 93. It will be in the state. Thus, the handling operation is performed in a state where the machine body 2 is moving forward, backward, etc., corresponding to the operation position of the main transmission lever 93.

  Further, as shown in steps S1, S2, S5, and S6, the control device 100 indicates that the hand switch 96 is in the ON state when the work clutch lever 95 is operated from the cutting position to the threshing position. In such a case, abnormality determination is performed, the feed chain 30 is not started, and the operation mode is not shifted to. In other words, the control device 100 determines that the threshing clutch 76 is in the “ON” state, and when the handling switch 96 is in the ON state when the reaping clutch 75 is operated from “ON” to “OFF”. And the feed chain 30 is not activated and the operation mode is not shifted to.

  Further, as shown in steps S1, S2, S5, and S6, the control device 100 has the hand switch 96 in the ON state when the work clutch lever 95 is operated from the stop position to the threshing position. In such a case, an abnormality is determined, the feed chain 30 is not driven, and the operation mode is not shifted to. That is, the control device 100 determines that there is an abnormality when the handling switch 96 is in the ON state when the reaping clutch 75 is in the “off” state and the threshing clutch 76 is operated from “off” to “on”. And do not shift to the handling mode.

  As described above, when the work clutch lever 95 is operated to the threshing position and the hand switch 96 is in the ON state, the control device 100 determines an abnormality and does not shift to the hand mode. As a result, when the hand switch 96 is always on due to a failure or the like, an abnormality determination is made and the operation mode is not shifted to, so the hand switch 96 is not operated. It is possible to prevent the shift to the handling mode against the operator's intention, and the handling operation can be performed stably.

  As shown in step S <b> 7, the control device 100 cancels the abnormality determination when the handling switch 96 is turned OFF after performing the abnormality determination. Thereby, after cancellation of the abnormality determination, it is possible to shift to the handling mode through the steps S1 to S4. Further, when the hand switch 96 is broken and is always on, the abnormality determination cannot be canceled until the failure is repaired. Therefore, after canceling the abnormality determination, the failure of the hand switch 96 has been repaired, and it is possible to stably shift to the hand mode.

  In addition, when the abnormality determination is performed in step S5, a display unit 110 that displays that the abnormality determination is performed may be provided (see FIGS. 3 and 5). The display part 110 is provided in the control part 90, and is arrange | positioned in the position which the operator who is seated in the driver's seat 91 can visually recognize. The display unit 110 is connected to the control device 100 and can receive a signal indicating that an abnormality determination has been performed from the control device 100. Thereby, the operator can confirm the presence or absence of a failure of the handling switch 96 by visually recognizing the display unit 110 when performing an operation for shifting to the handling mode.

  Further, the hand handling switch 96 may be composed of a plurality of operation tools. Each of the operating tools is composed of a switch portion 96a that can be turned ON / OFF (see FIG. 6). In the present embodiment, the operation tool is configured by a switch unit 96a that is a switch-type operation tool. However, the present invention is not limited to this, for example, a lever-type operation tool, a dial-type operation tool, You may comprise with a pedal-type operation tool.

  When the handling switch 96 is configured by a plurality of switch units 96a, in step S2, the control device 100 determines that the handling switch 96 is in the ON state when at least one switch unit 96a is in the ON state. If it is determined (step S2, ON) and all the switch parts 96a are in the OFF state, it is determined that the hand switch 96 is in the OFF state (step S2, OFF). In step S3, when all the switch units 96a are operated from OFF to ON, the control device 100 determines that the hand switch 96 is operated from OFF to ON (step S3, Yes), and at least one When one switch part 96a is operated to OFF, it determines with the handling switch 96 not being operated from OFF to ON (step S3, No). Thereby, the requirements for shifting to the handling mode can be made strict, and the shifting to the handling mode due to an erroneous operation of the handling switch 96 can be suppressed.

  Further, in step S7, when all the switch units 96a are operated OFF, the control device 100 determines that the hand switch 96 is operated OFF (step S7, Yes), and at least one switch unit 96a. Is operated to ON, it is determined that the hand switch 96 is not operated to OFF and is operated to ON (Step S7, No). As a result, when some of the switch parts 96a are out of order and are always in an ON state, the abnormality determination cannot be canceled until the failure is repaired. Therefore, after cancellation of the abnormality determination, the failure of the switch unit 96a has been repaired, and it is possible to stably shift to the handling mode.

  As shown in FIG. 6, the switch units 96a, 96a... Are connected to the control device 100 in parallel. The display unit 110 displays information indicating whether the switch unit 96a is in the “ON” state or the “OFF” state. As described above, when the switch units 96a, 96a,... Are connected in parallel to the control device 100, which switch unit 96a fails compared to the case where the switch units 96a, 96a,. It will be easier to find out.

DESCRIPTION OF SYMBOLS 1 Combine 3 Engine 20 Mowing part 30 Feed chain 40 Threshing part 75 Mowing clutch 76 Threshing clutch 96 Hand-operated switch 100 Control apparatus

Claims (6)

The chopping clutch that transmits or cuts the power of the drive source to the cutting part is in the “cut” state, and the threshing clutch that transmits or cuts the power of the drive source to the threshing part is in the “on” state. When the operation is switched from ON to ON, the feed chain is activated to provide a control device that shifts to a handling mode for driving the threshing unit and the feed chain in a state in which the mowing unit is stopped,
The control device makes an abnormality determination when the handling tool is in an ON state when the threshing clutch is in an “ON” state and the reaping clutch is operated from “ON” to “OFF”. Do not start the feed chain, do not shift to the handling mode,
Combine. The chopping clutch that transmits or cuts the power of the drive source to the cutting part is in the “cut” state, and the threshing clutch that transmits or cuts the power of the drive source to the threshing part is in the “on” state. When the operation is switched from ON to ON, the feed chain is activated to provide a control device that shifts to a handling mode for driving the threshing unit and the feed chain in a state in which the mowing unit is stopped,
The control device makes an abnormality determination if the handling operation tool is in the ON state when the reaping clutch is in the “OFF” state and the threshing clutch is operated from “OFF” to “ON”. Do not start the feed chain, do not shift to the handling mode,
Combine. The control device cancels the abnormality determination when the handling operation tool is turned off after performing the abnormality determination.
The combine according to claim 1 or claim 2. The handling operation tool is composed of a plurality of operation tools,
The case where the handling operation tool is operated from OFF to ON is the case where all the operation tools are operated from OFF to ON,
The case where the handling operation tool is in an ON state is a case where at least one of the operation tools is in an ON state,
The combine according to claim 1 or claim 2. The plurality of operation tools are connected in parallel to the control device,
The combine according to claim 4 . A display unit that displays that the abnormality determination has been performed is provided.
The combine as described in any one of Claims 1-5 .

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