JP5780187B2 - Combine - Google Patents

Description

  The present invention relates to a combine that harvests and thresh cereal grains.

  2. Description of the Related Art Conventionally, as a combine, a harvesting device and a threshing device are provided, and the cereals harvested by the harvesting device are conveyed toward the threshing device by a feed chain (see, for example, Patent Document 1).

JP 2011-223890 A

  Here, the worker may thresh the harvested cereal with a combine. In this case, in the conventional combine, while the mowing device is stopped, the feed chain and the threshing device are operated, and the operator performs a so-called handling operation of supplying the hand-harvested cereal to the feed chain and threshing. Is going.

  At the time of such a handling operation, it is required to improve safety for the worker.

  Then, this invention makes it a subject to provide the combine which can improve the safety | security with respect to the operator at the time of handling operation.

Said inventions of claim 1, an engine (20), the feed is subjected sheet to threshing apparatus culms which reaped by cutting device (7) (5) Chen (13), from the engine (20) A feed chain transmission (100) that is provided in a power transmission path to the feed chain (13) and that shifts the power from the engine (20) stepwise or steplessly and outputs it to the feed chain (13). And a control device (150) for controlling the engine (20) and the feed chain transmission (100). The control device (150) is configured to control a vehicle operating speed or a travel operation lever (6H for shifting the vehicle speed). ) According to the operation position), the feed chain shift control for shifting the feed chain transmission device (100), and the effective conditions of the preset handling mode are set. In this case, the mode switching control for switching the handling mode from the invalid state to the valid state, and the rotation speed of the engine (20) is preset when the handling mode becomes the valid state. The engine low-rotation control for reducing the engine speed to the set rotational speed and the engine emergency stop control for stopping the engine (20) when the emergency stop operation unit (168) is operated are performed to the feed chain. A regulation member (14) capable of regulating the supply of hand-held cereals is provided in a portion on the upper side in the cereal conveyance direction of the feed chain (13), and the regulation of the supply of cereals by the regulation member (14) When the release is performed, it is determined that the valid condition of the hand-handling mode is satisfied, and the combine is configured to automatically switch the hand-handling mode to the valid state .

The invention according to claim 2 is the combine according to claim 1 , wherein the set rotational speed is set to a rotational speed lower than the rated rotational speed and higher than the idling rotational speed.

The invention according to claim 3, said control device (150), when the vehicle speed reaches a predetermined low speed, including a stopped state, or the travel operation lever (6H) operating position of the predetermined including neutral position When operated at a low speed position, idling rotation control is performed with the engine rotation speed set to the idling rotation speed, and a threshing clutch provided in a power transmission path from the engine (20) to the threshing device (5) ( in a state where 81) is connected, it said without executing idling control, when the hand threshing mode is enabled state, claim 1 or claim was configured to execute the low engine speed control The combine is described in 2 .

According to a fourth aspect of the invention, and the reaper reaper drive state detection sensor for detecting a driving state of the apparatus (7) (171), is conveyed toward the threshing device (5) from the cutting device (7) A first culm detection sensor (169) for detecting the culm, wherein the driving drive state detection sensor (171) detects the driving state of the reaping device (7), and the first culm detection 4. The switch according to claim 1, 2, or 3 , wherein switching to an effective state of the handling mode is restrained in a state where the cereal meal being conveyed is detected by the sensor (169). This combine .

The invention according to claim 5, wherein the cutting device (7) comprises a second grain稈検detection sensor for detecting a cutting target culms before cutting (170) by, cutting by the second grain稈検detection sensor (170) It is set as the combine as described in any one of Claim 1 to 4 which was set as the structure by which the switching to the effective state of the said handling mode is suppressed when the target grain candy is detected.

  The combine of this invention can improve the safety | security with respect to the operator at the time of performing a handling operation.

FIG. 1 is a side view showing a combine according to the present embodiment. FIG. 2 is a plan view showing the combine according to the present embodiment. FIG. 3 is a side view showing the internal structure of the combine according to the present embodiment. FIG. 4 is a plan view showing the internal structure of the combine according to the present embodiment. FIG. 5 is a side view showing the internal structure of the combine according to the present embodiment. FIG. 6 is a side view showing a part of the combine according to the present embodiment. FIG. 7 is a schematic diagram showing a part of the power transmission path of the combine according to the present embodiment. FIG. 8 is a side view showing the internal structure of the combine gearbox according to the present embodiment. FIG. 9 is a plan view showing the internal structure of the combine gearbox according to the present embodiment. FIG. 10 is a block diagram relating to a combine control system according to the present embodiment. FIG. 11 is a flowchart of an example related to mode switching control. FIG. 12 is a flowchart of an example relating to mode switching control. FIG. 13 is a flowchart of an example of the control device when operating the emergency stop switch. FIG. 14 is a flowchart of an example of a control device related to clutch engagement of the feed chain.

  Hereinafter, embodiments of a combine according to the present invention will be described in detail with reference to the drawings. In addition, this invention is not limited by this embodiment. In addition, constituent elements in the following embodiments include those that can be easily replaced by those skilled in the art or those that are substantially the same.

[Embodiment]
FIG. 1 is a side view showing a combine according to the present embodiment. FIG. 2 is a plan view showing the combine according to the present embodiment. The combine 1 is for harvesting and threshing the grains while running. In the following, the forward direction of the combine 1 is the front side (left side in FIGS. 1 and 2), the backward direction of the combine 1 is the rear side (right side in FIGS. 1 and 2), and is orthogonal to the front-back direction of the combine 1 The orthogonal direction is the left-right direction. That is, “right” is right toward the front of the combine 1, and “left” is left toward the front of the combine 1.

  As shown in FIG. 1, the combine 1 includes an airframe frame 2, a cutting device 7 attached to the front side of the airframe frame 2, a traveling device 3 attached to the lower side of the airframe frame 2, and an airframe frame 2. And a threshing device 5 attached to the rear side. In addition, the combine 1 is equipped with an engine 20 (see FIG. 7) serving as a power source.

  The traveling device 3 has a pair of left and right crawler belts 4, and power is transmitted from the engine 20 to the pair of left and right crawler belts 4. The pair of left and right crawler belts 4 circulate when power is transmitted from the engine 20, and the traveling device 3 causes the combine 1 to travel by the pair of left and right crawler belts 4 that circulate.

  The reaping device 7 includes a weeding tool 7a for weeding the cereal, a raising device 7b for causing the sown cereal, and a cutting blade for cutting the root of the caused cereal. The reaping device 7 uses a weed cutter 7a to weed cereals raised in the field, raises the cereals that have been weeded, causes them to occur with the device 7b, and harvests the induced cereals with a cutting blade. The harvested corn straw is conveyed toward the threshing device 5 by the corn straw conveyor 10. The details of the cereal conveyance device 10 will be described later.

  A cabin 6 serving as a cockpit is provided on one side (right side) in the left-right direction on the rear side of the reaping device 7. The cabin 6 is provided with a driver's seat 6S, an operation device 6C such as a traveling operation lever 6H and an operation panel provided on the front side of the driver's seat 6S, and a monitor 6D capable of displaying various information. The cabin 6 is provided with various operation levers and instruments.

  FIG. 3 is a side view showing the internal structure of the combine according to the present embodiment. FIG. 4 is a plan view showing the internal structure of the combine according to the present embodiment. As shown in FIG. 3 and FIG. 4, the threshing device 5 is a process in which cereals are conveyed backward by the cereal conveying device 10, and the grains are separated from the cereals harvested by the reaping device 7, so A thing and a grain are isolate | separated. As shown in FIG. 3, the threshing apparatus 5 includes a threshing unit 5a and a sorting unit 5b arranged below the threshing unit 5a. As shown in FIGS. 3 and 4, the threshing unit 5a includes a handling chamber 5I arranged on the left side of the front part, a second processing chamber 5K arranged on the right side of the handling chamber 5I, and a second processing chamber 5K. And a dust exhaust treatment chamber 5E disposed rearward. The handling chamber 5I is located on the left side of the cabin 6. In the handling chamber 5I, a cylindrical handling cylinder 5R that is rotatable about a rotation axis extending in the front-rear direction is disposed. The handling cylinder 5R sheds the grain from the tip of the cereal that has been conveyed into the handling chamber 5I by a rotating operation. A second processing cylinder 5H is disposed in the second processing chamber 5K, and a dust processing cylinder 5D is disposed in the dust processing chamber 5E so as to be rotatable about a rotation axis extending in the front-rear direction.

  The sorting unit 5b includes a sorting shelf 5C that is swingably disposed below the handling chamber 5I, a tang 5F that is disposed in a lower space of the sorting shelf 5C, and a second tang 5M that is disposed behind the tang 5F. And a first recovery unit 5G and a second recovery unit 5J, and a dust exhaust fan 5L disposed behind the sorting shelf 5C. The sorting unit 5b removes foreign substances from the object to be processed (the one that the handling cylinder 5R has threshed) including the grain threshed by the threshing unit 5a, and collects the grain. That is, the grains are selected from the workpieces sent from the threshing section 5a by the swinging movement of the sorting shelf 5C, the sorting wind by the Kara 5F and the second Kara 5M, and the suction action by the dust exhaust fan 5L. Then, the first collection unit 5G and the second collection unit 5J collect it. The recovered grain is transferred to the Glen tank 8 and stored. In addition, the cereal basket (removal) which passed the threshing apparatus 5 and the grain was handled is rear side of the combine 1 by the unrepresented waste transport apparatus arrange | positioned at the rear side of the cereal transport apparatus 10. It is conveyed to the waste cutting device arranged in the. The waste cutting device cuts the waste put into the waste transporting device and discharges it to the field, for example.

  Again referring to FIGS. 1 and 2, on the rear side of the cabin 6, a Glen tank 8 for temporarily storing the grains threshed by the threshing device 5 is arranged. A grain discharge auger 9 is provided on the rear side of the grain tank 8 to discharge the grain stored therein to the outside. The grain discharge auger 9 includes an uncooked cylinder 9a connected to the glen tank 8, an extendable transfer cylinder 9b connected to the pulverized cylinder 9a, and the inside of the glen tank 8, the cereal cylinder 9a and the transfer cylinder 9b. And a plurality of helical shafts provided on the surface. The transport cylinder 9b is provided with a discharge port for discharging the grain, and the grain discharge auger 9 moves the transport cylinder 9b up and down as appropriate, and moves the discharge port at a predetermined place by turning it up and down. And the grain discharge auger 9 conveys a grain from the inside of the glen tank 8 to the whipping cylinder 9a by rotating a some helical shaft, and conveys a grain from the groining cylinder 9a to the conveyance cylinder 9b. Thereby, the grain conveyed to the conveyance cylinder 9b is discharged | emitted outside via the discharge port provided in the conveyance cylinder 9b.

  Next, with reference to FIG. 5 and FIG. FIG. 5 is a side view showing the internal structure of the combine according to the present embodiment. FIG. 6 is a side view showing a part of the combine according to the present embodiment. The corn straw transporting device 10 transports the corn straw harvested from the reaping device 7 toward the threshing device 5. The grain feeder 10 is disposed on the opposite side to the side where the grain tank 8 shown in FIG. 2 is disposed, that is, on the left side. The cereal feeder 10 includes a pinch 11 (see FIGS. 1 and 6) and a feed chain 13 (see FIGS. 4 to 6). The corn straw transporting device 10 feeds the corn straw harvested by the reaping device 7 between the pinch 11 and the feed chain 13. The feed chain 13 is disposed in a direction intersecting with the rotation center axis of the handling cylinder 5R and on one side (left side) of the handling chamber 5I. The clamp 11 is urged toward the feed chain 13 by a coil spring (not shown). With such a structure, the scissors 11 imparts a force toward the feed chain 13 to the cereal. For this reason, the cereals fed between the culvert 11 and the feed chain 13 are sandwiched between the clinches 11 and the feed chain 13 and conveyed to the threshing device 5 by the feed chain 13.

  In the present embodiment, as shown in FIG. 6, the feed chain 13 has an end portion 13T on the mowing device 7 side that is longer than an end portion 11T on the mowing device 7 side of the pinch 11. For this reason, the feed chain 13 is in a state in which the end portion 13T on the cutting device 7 side is exposed. A regulating member 14 that covers the exposed end portion 13T of the feed chain 13 is provided at an end portion (upper side portion) 11T of the clip bar 11 on the cutting device 7 side. The restricting member 14 is rotatable around an end portion 11T of the pinch 11 between an open position L1 that permits a handling operation described later and a restricting position L2 that restricts the handling operation. It is attached to the edge part 11T of the clip 11 so that it may become. For this reason, during the handling operation, the regulating member 14 is rotated from the regulating position L2 to the open position L1, while during the non-handling operation, the regulating member 14 is rotated from the open position L1 to the regulating position L2. . Thereby, at the time of non-handling work, since the regulating member 14 covers the feed chain 13, it is possible to reduce the possibility that foreign matters other than the cereals are caught between the pinch 11 and the feed chain 13. Safety during non-handling work can be improved. A restricting member position detection sensor 172 capable of detecting the opening position L1 and the restricting position L2 of the restricting member 14 is provided around the restricting member 14.

  Here, the combine 1 normally processes the cereals harvested by the reaping device 7 with the threshing device 5 while traveling by the traveling device 3. On the other hand, the combine 1 may perform a hand handling process (hand handling work) in which the cedar harvested by the operator is supplied to the threshing device 5 by the feed chain 13 in a state where traveling is stopped. is there. In this hand-handling operation, the worker supplies the hand-harvested cereals to the feed chain 13 so that the cereals are sandwiched between the pinch 11 and the feed chain 13 and conveyed. To be supplied. The cereal meal supplied to the threshing device 5 is threshed by the threshing device 5.

  Here, with reference to FIG. 7, the power transmission path | route from the engine 20 to the feed chain 13 of the grain feeder 10 is demonstrated. FIG. 7 is a schematic diagram showing a part of the power transmission path of the combine according to the present embodiment.

  The engine 20 is provided with an output shaft 20S, and a plurality of engine output pulleys 20P are attached to the output shaft 20S. The plurality of engine output pulleys 20 </ b> P output power for driving the traveling device 3, the reaping device 7, the threshing device 5, the grain discharge auger 9, and the culm conveying device 10. In addition, in FIG. 7, the motive power transmission path | route in which the motive power for driving the threshing apparatus 5 and the cereal conveyance apparatus 10 is output from the some engine output pulley 20P is illustrated. On the other hand, in FIG. 7, illustration of a power transmission path through which power for driving the traveling device 3, the reaping device 7, and the grain discharge auger 9 is output from the plurality of engine output pulleys 20 </ b> P is omitted.

  The motive power for driving the threshing device 5 and the cereal conveying device 10 is output from a plurality of (for example, three in this embodiment) engine output pulleys 20P. The combine 1 has a threshing power transmission shaft 38 for transmitting power to the threshing device 5. In the threshing power transmission shaft 38, a plurality (for example, three in this embodiment) of input pulleys 38a, a processing cylinder output pulley 38b, and a plurality of (for example, three in the present embodiment) are sequentially arranged from one end side (the left side in the figure). A cylinder output pulley 38c, a recovery unit output pulley 38d, and a tang output pulley 38e are attached.

  A plurality of (for example, three in this embodiment) first transmission belts 37 are wound around the plurality of engine output pulleys 20P and the plurality of input pulleys 38a. The first transmission belt 37 is an endless belt. Therefore, the power generated from the engine 20 is transmitted to the threshing power transmission shaft 38 via each engine output pulley 20P, each first transmission belt 37, and each input pulley 38a.

  A threshing clutch 81 is provided between each engine output pulley 20P and each input pulley 38a. When the threshing clutch 81 is connected, power is transmitted between the engine output pulley 20P and the input pulley 38a. When the threshing clutch 81 is released, power transmission between the engine output pulley 20P and the input pulley 38a is cut off. Is done.

  The second processing cylinder 5H and the dust processing cylinder 5D are driven by the power transmitted from the processing cylinder output pulley 38b. A processing cylinder driving pulley 61a is connected to the processing cylinder output pulley 38b via an endless second transmission belt 60. The processing cylinder driving pulley 61 a is attached to one end of the processing cylinder driving shaft 61. A first bevel gear 61b is attached to the other end of the processing cylinder drive shaft 61, and the first bevel gear 61b meshes with the second bevel gear 62a. The second bevel gear 62a is attached to the processing cylinder rotating shaft 62, and the second processing cylinder 5H and the dust exhausting processing cylinder 5D are attached to the processing cylinder rotating shaft 62. Therefore, the power of the engine 20 transmitted to the threshing power transmission shaft 38 is the processing cylinder output pulley 38b, the second transmission belt 60, the processing cylinder driving pulley 61a, the processing cylinder driving shaft 61, the first bevel gear 61b, the second By being transmitted to the second processing cylinder 5H and the dust removal processing cylinder 5D via the bevel gear 62a and the processing cylinder rotation shaft 62, the second processing cylinder 5H and the dust processing cylinder 5D are rotated. As a result, the power of the engine 20 is directly transmitted to the second processing cylinder 5H and the dust exhausting processing cylinder 5D, and thus is driven at a constant speed (rotational speed) regardless of the traveling speed of the combine 1.

  The handling cylinder 5R is driven by the power transmitted from the handling cylinder output pulley 38c. A handling cylinder driving pulley 64 a is connected to the handling cylinder output pulley 38 c via an endless third transmission belt 63. The handling cylinder drive pulley 64 a is attached to one end of the first handling cylinder drive shaft 64. A first reduction gear 64b is attached to the other end of the first barrel drive shaft 64, and the first reduction gear 64b meshes with the second reduction gear 65a. The second reduction gear 65 a is attached to one end portion of the second barrel drive shaft 65. A third bevel gear 65b is attached to the other end portion of the second barrel drive shaft 65, and the third bevel gear 65b meshes with the fourth bevel gear 66a. The fourth bevel gear 66 a is attached to the handling cylinder rotation shaft 66, and the handling cylinder 5 </ b> R is attached to the handling cylinder rotation shaft 66. For this reason, the power of the engine 20 transmitted to the threshing power transmission shaft 38 is the handling cylinder output pulley 38c, the third transmission belt 63, the handling cylinder drive pulley 64a, the first handling cylinder drive shaft 64, the first reduction gear 64b, The handle 5R is rotated by being transmitted to the handle cylinder 5R via the second reduction gear 65a, the second handle drive shaft 65, the third bevel gear 65b, the fourth bevel gear 66a, and the handle rotation shaft 66. Let Thereby, since the power of the engine 20 is directly transmitted, the handling cylinder 5R is also driven at a constant speed (rotational speed) regardless of the traveling speed of the combine 1.

  The Kara 5F is driven by the power transmitted from the Kara output pulley 38e. A tang drive pulley 68 a is connected to the tang output pulley 38 e through an endless fourth transmission belt 67. The tang drive pulley 68 a is attached to one end of the tang drive shaft 68. A Kara 5F is attached to the Kara rotary shaft 68 via a Kara transmission mechanism 69. For this reason, the power of the engine 20 transmitted to the threshing power transmission shaft 38 is transmitted to the Kara 5F via the Kara output pulley 38e, the fourth transmission belt 67, the Kara drive pulley 68a, the Kara rotary shaft 68, and the Kara transmission mechanism 69. By being transmitted, the Kara 5F is rotated. Thereby, the power of the engine 20 is transmitted at the predetermined speed (rotational speed) because the power of the engine 20 is transmitted through the data transmission mechanism 69.

  The first recovery unit 5G and the second recovery unit 5J are driven by the power transmitted from the recovery unit output pulley 38d. The first recovery unit drive pulley 91a and the second recovery unit drive pulley 92a are connected to the recovery unit output pulley 38d via an endless fifth transmission belt 90. The first recovery unit drive pulley 91a is attached to a first recovery unit drive shaft 91 for driving the first recovery unit 5G. The second recovery portion drive pulley 92a is attached to a second recovery portion drive shaft 92 for driving the second recovery portion 5J. For this reason, the power of the engine 20 transmitted to the threshing power transmission shaft 38 is transmitted through the recovery unit output pulley 38d, the fifth transmission belt 90, the first recovery unit drive pulley 91a, and the first recovery unit drive shaft 91. The first collecting unit 5G is driven by being transmitted to the number collecting unit 5G. Further, the power of the engine 20 transmitted to the threshing power transmission shaft 38 is the second through the recovery part output pulley 38d, the fifth transmission belt 90, the second recovery part drive pulley 92a, and the second recovery part drive shaft 92. The second collection unit 5J is driven by being transmitted to the collection unit 5J.

  Further, a second tang drive pulley 93a is provided between the first recovery portion drive pulley 91a and the second recovery portion drive pulley 92a, and the second tang drive pulley 93a is connected to the fifth transmission belt 90. Yes. The second hot spring driving pulley 93a is attached to the second hot spring rotary shaft 93, and the second hot spring rotary shaft 93 is attached to the second hot spring rotary shaft 93M. For this reason, the motive power of the engine 20 transmitted to the threshing power transmission shaft 38 is supplied to the second tangs through the recovery unit output pulley 38d, the fifth transmission belt 90, the second tangs drive pulley 93a, and the second tangs rotation shaft 93. By being transmitted to 5M, the second Kara 5M is rotated.

  Here, a conveyance drive pulley 91b is attached to the first recovery unit drive shaft 91, and power for driving the cereal conveyance device 10 is taken out from the conveyance drive pulley 91b. The transport drive pulley 91 b is connected to the transmission input pulley 101 a of the gear box 100 through the sixth transmission belt 92.

  Next, the gear box 100 will be described with reference to FIGS. FIG. 8 is a side view showing the internal structure of the combine gearbox according to the present embodiment. FIG. 9 is a plan view showing the internal structure of the combine gearbox according to the present embodiment. The gear box 100 functions as a feed chain transmission that shifts the power from the engine 20 and outputs it to the feed chain 13 and also functions as a clutch that can cut off the power from the engine 20.

  The gear box 100 includes a transmission input pulley 101 a connected to the sixth transmission belt 92, and the transmission input pulley 101 a is attached to one end of the gear box input shaft 101. An input gear 101b is attached to the other end portion of the gear box input shaft 101, and the input gear 101b meshes with the dust exhaust fan output gear 102a. The dust exhaust fan output gear 102 a is attached to the dust exhaust fan rotating shaft 102, and the dust exhaust fan 5 </ b> L is attached to the dust exhaust fan rotating shaft 102. Therefore, the power of the engine 20 transmitted to the recovery unit drive shaft 91 is the conveyance drive pulley 91b, the sixth transmission belt 92, the transmission input pulley 101a, the gear box input shaft 101, the input gear 101b, and the dust fan output. The dust exhaust fan 5L is rotated by being transmitted to the dust exhaust fan 5L via the gear 102a and the dust exhaust fan rotating shaft 102. Accordingly, the dust exhaust fan 5L is also driven at a constant speed (rotational speed) regardless of the traveling speed of the combine 1 because the power of the engine 20 is directly transmitted.

  The dust exhaust fan output gear 102a meshes with the transmission input gear 103a. The transmission input gear 103 a is attached to one end of the transmission shaft 103. A high-speed transmission gear 103b and a low-speed transmission gear 103c are rotatably attached to the transmission shaft 103. The high speed side transmission gear 103b is provided on the transmission input gear 103a side, and the low speed side transmission gear 103c is provided on the opposite side of the transmission input gear 103a with the high speed side transmission gear 103b interposed therebetween. The speed change shaft 103 between the high speed side transmission gear 103b and the low speed side transmission gear 103c is provided with a moving body 103d, and the moving body 103d is attached to rotate integrally with the speed change shaft 103, while the speed change gear 103b. The shaft 103 can move in the axial direction. A high speed side clutch pawl 104 is provided on a surface of the high speed side transmission gear 103b facing the axial moving body 103d, and a low speed side clutch is provided on the surface of the low speed side transmission gear 103c facing the axial moving body 103d. A nail 105 is provided. Further, a first clutch pawl 106 that can be engaged with the high-speed side clutch pawl 104 is provided on a surface of the moving body 103d facing the high-speed side transmission gear 103b in the axial direction, and the low-speed side transmission in the axial direction of the mobile body 103d is provided. A second clutch pawl 107 that can be engaged with the low-speed clutch pawl 105 is provided on the surface facing the gear 103c.

  For this reason, when the moving body 103d moves to the high speed side shift position on the high speed side transmission gear 103b side, the high speed side clutch pawl 104 and the first clutch pawl 106 are engaged, while the low speed side clutch pawl 105 and the first clutch pawl 105 are engaged. The two-clutch pawl 107 is disengaged, and the high-speed transmission gear 103b rotates integrally with the moving body 103d and the transmission shaft 103. On the other hand, when the moving body 103d moves to the low speed side shift position on the low speed side transmission gear 103c side, the low speed side clutch pawl 105 and the second clutch pawl 107 are engaged, while the high speed side clutch pawl 104 and the first clutch pawl 104 The one clutch pawl 106 is disengaged, and the low-speed transmission gear 103 c rotates integrally with the moving body 103 d and the transmission shaft 103. When the moving body 103d is positioned at a neutral position between the high speed side shifting position and the low speed side shifting position, the first clutch pawl 106 and the second clutch pawl 107 of the moving body 103d are connected to the high speed side clutch pawl 104 and the low speed side shifting position. Since the clutch pawl 105 is not engaged, the power from the transmission shaft 103 is cut off without being transmitted to the high speed transmission gear 103b and the low speed transmission gear 103c.

  The moving body 103d is connected to the shifter shaft 108 via the shifter arm 109. When the shifter shaft 108 rotates, the moving body 103d is moved along the axial direction of the transmission shaft 103 to the high speed side shift position, Move to the neutral position or low-speed side shift position. The shifter shaft 108 is connected to a speed change motor 111 via a speed change rod 110. Therefore, it is possible to move the moving body 103d to a predetermined position by rotating the shifter shaft 108 via the speed change rod 110 using the speed change motor 111 as a power source.

  The shifter shaft 108 is configured to be forcibly moved by the clutch arm 121 so that the moving body 103d moves to the neutral position. The shifter shaft 108 is provided with a protruding portion 124 that protrudes in an orthogonal direction orthogonal to the axial direction at one end (upper side in the drawing) in the axial direction. In addition, the clutch arm 121 is provided with a groove 125 that fits into the protrusion 124. The clutch arm 121 is connected to a feed chain clutch motor 126. Therefore, by moving the clutch arm 121 in a predetermined direction using the feed chain clutch motor 126 as a power source, the projecting portion 124 of the shifter shaft 108 is fitted into the groove portion 125 of the clutch arm 121, thereby moving the moving body 103d. The shifter shaft 108 is forcibly rotated so as to move to the neutral position.

  The high speed side transmission gear 103b meshes with the high speed side output gear 112a. The low-speed transmission gear 103c is meshed with the low-speed output gear 112b. The high speed side output gear 112 a and the low speed side output gear 112 b are integrally provided on the gear box output shaft 113. For this reason, the power is transmitted to the high-speed output gear 112a or the low-speed output gear 112b, whereby the gear box output shaft 113 rotates.

  The gear box output shaft 113 of the gear box 100 configured as described above is provided with a feed chain drive pulley 113a. The feed chain 13 is wound around the feed chain drive pulley 113a. For this reason, the power of the engine 20 transmitted to the gear box input shaft 101 of the gear box 100 is shifted in the gear box 100, and the shifted power is transmitted from the gear box output shaft 113 to the feed chain 13. Then, the feed chain 13 is driven (circulated).

  The combine 1 configured as described above is controlled by the control device 150. The control device 150 will be described with reference to FIG. FIG. 10 is a block diagram relating to a combine control system according to the present embodiment. The control device 150 is connected to the operation device 6C and various sensors. Based on the operation input from the operation device 6C and the detection results input from the various sensors, the engine 20, the traveling device 3, the threshing device 5, and the reaping device 7 are connected. And controls the grain discharge auger 9.

  Specifically, as shown in FIG. 10, the control device 150 includes an engine automatic adjustment switch 161, a threshing clutch detection sensor 162, a threshing potentiometer 163, a travel potentiometer 164, a vehicle speed sensor 165, and a parking brake. A sensor 166, a hand switch 167, an emergency stop switch 168 (emergency stop operation unit), a transported culm detection sensor 169 (first culm detection sensor), and a cutting culm detection sensor 170 (second culm) Detection sensor), cutting drive state detection sensor 171, restriction member position detection sensor 172, flow rate sensor 173 of sorting shelf 5C, waste layer thickness sensor 174, and transported culm layer thickness sensor 175 are connected. ing. Further, the control device 150 includes a monitor 6D, an engine 20, a speed change motor 111, a feed chain clutch motor 126, a handling mode lamp 190, a red pepper motor 191, a sheave motor 192, and a cutting clutch motor 193. The alarm buzzer 195 and the main power switch 196 are connected.

  The engine automatic adjustment switch 161 is a switch that is provided on the operation panel of the operating device 6C and is turned on and off to adjust the rated speed (rated speed) of the engine 20 in accordance with the drive state of the combine 1. . That is, when the control device 150 detects an on-operation (ON operation) of the engine automatic adjustment switch 161, the control device 150 automatically adjusts the rated rotational speed of the engine 20, while turning off the engine automatic adjustment switch 161 (OFF operation). When detected, the automatic adjustment of the rated speed of the engine 20 is canceled.

  The threshing clutch detection sensor 162 detects connection and disconnection by the threshing clutch 81. The threshing potentiometer 163 detects the operation position of the threshing operation lever. The threshing operation lever is operated so as to be a predetermined operation position including a cutting position and a threshing position. The reaping position is an operation position for reaping the culm with the reaping device 7 and threshing with the threshing device 5. The threshing position is an operation position for performing threshing by the threshing device 5.

  The travel potentiometer 164 detects the operation position of the travel operation lever 6H. The travel operation lever 6H is a lever for operating a hydraulic continuously variable transmission (not shown) that shifts the power of the engine 20. The hydraulic continuously variable transmission is configured as a hydrostatic continuously variable transmission called HST (Hydro Static Transmission). The travel operation lever 6H is operated so as to be a predetermined operation position including a forward position, a reverse position, and a neutral position. The forward position is an operation position for moving the combine 1 forward. As the forward position, the low speed position where the combine 1 vehicle speed is low, the medium speed position where the combine 1 vehicle speed is medium, and the combine 1 There is a high-speed position where the vehicle speed is high. The reverse position is an operation position for moving the combine 1 backward. The neutral position is an operation position for stopping traveling of the combine 1. For this reason, when the traveling operation lever 6H is operated to the forward position, the neutral position, the reverse position, etc., the hydraulic continuously variable transmission outputs the power of the engine 20 as the power that the combine 1 drives in the forward direction. Or output as a braking force for stopping the travel of the combine 1, or output as power for driving the combine 1 in the backward direction.

  The vehicle speed sensor 165 detects the traveling speed of the combine 1. The parking brake sensor 166 detects the presence or absence of a brake operation of a parking brake (not shown) provided at the foot of the driver's seat 6S of the cabin 6. When a brake operation is performed by the driver, the parking brake returns the travel operation lever 6H to the neutral position and brakes the travel device 3, thereby stopping the travel of the combine 1.

  The handling switch 167 is provided around the driver's seat 6S of the cabin 6, and specifically, is provided on the traveling operation lever 6H. The hand handling switch 167 is a switch that is turned on and off to shift to the hand handling mode. The control device 150 switches the combine 1 to the handling mode when the handling switch 167 is turned on (ON operation) in a state where the effective condition of the handling mode that enables the handling operation is satisfied. To do. In the present embodiment, the operation unit serving as the hand-operated switch 167 is configured. However, the operation unit may be configured by an operation unit such as a hand-operated lever, and is not particularly limited.

  The emergency stop switch 168 is provided on the outer side surface (left side surface) of the threshing device 5 and is a switch that is turned on and off in order to emergency stop the rotation of the engine 20. When the emergency stop switch 168 is turned on (ON operation), the control device 150 executes engine emergency stop control for stopping the engine 20.

  The transported culm detection sensor 169 detects the culm transported by the feed chain 13. The harvested culm detection sensor 170 detects a harvested culm that is harvested by the harvesting device 7. The cutting drive state detection sensor 171 detects the drive state of the cutting device 7.

  The restriction member position detection sensor 172 detects the position of the restriction member 14. The restriction member position detection sensor 172 may be a normally open or normally closed micro switch or a push switch, and is not particularly limited.

  The flow sensor 173 detects the amount of impurities and grains separated by the threshing unit 5a moving on the sorting shelf 5C. The waste layer thickness sensor 174 detects the thickness of the waste layer transported by a waste transport device (not shown). The transported culm layer thickness sensor 175 detects the thickness of the culm layer transported by the feed chain 13.

  The monitor 6D is provided inside the cabin 6 and displays various information related to the combine 1. The handling mode lamp 190, the red pepper motor 191, the sheave motor 192, the mowing clutch motor 193, the alarm buzzer 195, and the main power switch 196 will be described later.

  Here, the control device 150 shifts to various modes and executes various controls based on inputs from various connected sensors and various switches. For example, when the control device 150 determines from the detection result of the travel potentiometer 164 or the vehicle speed sensor 165 that the combine 1 stops traveling or travels at a low speed, the control device 150 determines the rotational speed (rotational speed) of the engine 20 at the idling speed (rotational speed). Idling rotation control is performed with the idling rotation speed and idling rotation speed. At this time, if the control device 150 determines from the detection result of the threshing clutch detection sensor 162 that the threshing clutch 81 is in the connected state, the control device 150 does not execute the idling rotation control.

  Further, the control device 150 controls the shift motor 111 of the gear box 100 based on the detection result of the travel potentiometer 164 or the vehicle speed sensor 165, and executes feed chain shift control for shifting the transport speed of the feed chain 13. To do. That is, when the control device 150 determines that the combine 1 stops or runs at a low speed from the detection result of the travel potentiometer 164 or the vehicle speed sensor 165, the control device 150 controls the speed change motor 111 and controls the shift shaft 108 of the gear box 100. By moving the moving body 103d to the low speed side shift position, the conveyance speed of the feed chain 13 is lowered. On the other hand, when the control device 150 determines from the detection result of the travel potentiometer 164 or the vehicle speed sensor 165 that the combine 1 travels at a speed higher than the low speed travel, the control device 150 controls the shift motor 111 to shift the shift shaft of the gear box 100. The moving body 103d is moved to the high speed side shift position by 108, so that the conveying speed of the feed chain 13 is increased.

  Control device 150 executes mode switching control for switching combine 1 to a predetermined mode when a predetermined condition is satisfied. For example, the control device 150 is a mode for switching the combine 1 to the handling mode when an effective condition of the handling mode that enables the handling operation is satisfied by input from various sensors and various switches. Execute switching control. That is, when the valid condition for the hand-handling mode is satisfied, the control device 150 executes the mode switching control to make the hand-handling mode valid.

  On the other hand, the control device 150 executes mode switching control for canceling the handling mode of the combine 1 when the validity condition of the handling mode is not satisfied. In other words, when the valid condition for the handling mode is not satisfied, the control device 150 executes the mode switching control to make the handling mode invalid.

  Here, with reference to FIG. 11, an example of a control flow regarding mode switching control in which the control device 150 switches the handling mode between the valid state and the invalid state will be described. FIG. 11 is a flowchart of an example related to mode switching control. In addition, FIG. 11 demonstrates the mode switching control performed in the state which stopped the combine 1 driving | running | working.

  First, the control device 150 determines whether or not the engine automatic adjustment switch 161 is turned on based on the input result of the engine automatic adjustment switch 161 (step S1). If it determines with the engine automatic adjustment switch 161 being ON-operated (step S1: Yes), the control apparatus 150 will determine whether there exists a drive request | requirement of the threshing apparatus 5 (step S2). On the other hand, if the controller 150 determines that the engine automatic adjustment switch 161 is not turned on (step S1: No), the control device 150 proceeds to step S6 described later.

  Here, the determination of the drive request of the threshing device 5 in step S2 is performed based on the detection result of the threshing clutch detection sensor 162 or the threshing potentiometer 163. That is, when the control device 150 detects the connection of the threshing clutch 81 when the threshing clutch detection sensor 162 detects the connection of the threshing clutch 81, the control device 150 detects the release of the connection of the threshing clutch 81. 5 determines that there is no drive request. Alternatively, when the operation position detected by the threshing potentiometer 163 is the cutting position or the threshing position, the control device 150 determines that there is a drive request for the threshing apparatus 5, while the operation position is other than the cutting position or the threshing position. It is determined that there is no drive request for the threshing device 5.

  When determining that there is a drive request for the threshing device 5 (step S2: Yes), the control device 150 determines whether or not the combine 1 has stopped running (step S3). On the other hand, if it determines with the control apparatus 150 not having the drive request | requirement of the threshing apparatus 5 (step S2: No), it will progress to step S6 mentioned later.

  Here, the determination of the travel stop of the combine 1 in step S3 is made based on the detection results of the travel potentiometer 164, the vehicle speed sensor 165, or the parking brake sensor 166. That is, when the operation position of the travel operation lever 6H detected by the travel potentiometer 164 is the neutral position, the control device 150 determines that the combine 1 is stopped traveling, but at an operation position other than the neutral position. If there is, it is determined that the combine 1 has not stopped running. Alternatively, the control device 150 determines that the combine 1 is stopped when the traveling speed detected by the vehicle speed sensor 165 is zero, while the combine 1 stops traveling when the traveling speed is greater than zero. Judge that it is not. Alternatively, when the control device 150 detects that the brake operation is being performed by the parking brake sensor 166, the control device 150 determines that the combine 1 has stopped running, while detecting that the brake operation is not being performed. It is determined that the combine 1 has not stopped running.

  When determining that the combine 1 has stopped running (step S3: Yes), the control device 150 determines whether or not the hand switch 167 has been turned ON (step S4). On the other hand, when determining that the combine 1 has not stopped running (No at Step S3), the control device 150 proceeds to Step S6 described later.

  If it is determined from the detection result of the handle switch 167 that the handle switch 167 has been turned ON (step S4: Yes), the control device 150 sets the handle mode to a valid state (step S5). On the other hand, if the control device 150 determines from the detection result of the handle switch 167 that the handle switch 167 is not turned on (step S4: No), the controller 150 sets the handle mode to an invalid state (step S4). S6).

  Then, when executing step S5 or step S6, control device 150 proceeds to step S1 again and repeatedly executes the control flow relating to the mode switching control described above.

  The control device 150 executes engine low speed control that lowers the rotational speed of the engine 20 to a preset rotational speed (set rotational speed) when the handling mode is set to the valid state. Here, the set rotational speed is a rotational speed that is lower than the rated rotational speed of the engine 20 and higher than the rotational speed when the engine 20 is idling (idling rotational speed). And the control apparatus 150 can slow down the conveyance speed of the grain straw by the feed chain 13 by performing engine low-rotation control. In addition, it is preferable that the control device 150 sets the engine speed at which the grain discharge auger 9 can be driven when the engine low speed control is executed.

  Further, the control device 150 executes the feed chain low speed side shift control so that the transport speed of the feed chain 13 is slowed down when the handling mode is in the valid state. That is, the control device 150 executes the feed chain low-speed shift control, controls the shift motor 111, and moves the moving body 103d to the low-speed shift position by the shifter shaft 108 of the gear box 100. 13 is a low speed. Note that the control device 150 is preferably executed when at least the connection of the threshing clutch 81 and the brake operation of the parking brake are satisfied as the effective condition of the handling mode for executing the feed chain low speed side shift control. . Further, the control device 150 may be executed when at least the connection of the threshing clutch 81 and the neutral state of the sub-shift are satisfied as the effective conditions of the hand-handling mode for executing the feed chain low speed side shift control. . Here, the sub-shift will be briefly described. The engine 20 is connected to the hydraulic continuously variable transmission (HST), and a traveling mission is connected to the hydraulic continuously variable transmission, so that power is transmitted from the traveling mission to the traveling device 3. Combine 1 runs. A sub-transmission that is a stepped transmission is provided in the traveling mission, and the sub-transmission has low, neutral (also referred to as standard or neutral), and high speed gears. The low speed is a shift stage when performing low-speed travel, the neutral is a shift stage when interrupting transmission of power, and the high speed is a shift stage when performing road travel (high speed travel). The neutral state of the sub-transmission means that the shift stage of the sub-transmission device is a neutral shift stage. In addition, the control device 150 is executed when at least the connection of the threshing clutch 81 and the neutral position of the traveling operation lever 6H are satisfied as the effective conditions of the handling mode for executing the feed chain low speed side shift control. Also good.

  In addition, when the handling mode is set to the valid state, the control device 150 determines the amount of waste discharged from the grain thickness detected by the transporting grain thickness sensor 175 and the elapsed time of the handling mode. When the estimated total amount is calculated and the estimated total amount exceeds the preset total amount, a warning message indicating “Please move the combine” is displayed on the monitor 6D, or the alarm buzzer 195 notifies that fact. You may go. Here, the alarm buzzer 195 is connected to the control device 150 and can issue various alarms related to the combine 1. Further, when the estimated total amount of discharged waste exceeds the preset total amount, the control device 150 displays a warning message “Please check the cutter” on the monitor 6D, or displays an alarm buzzer. A notification to that effect may be given by 195.

  In addition, the control device 150 is connected with a hand-handling mode lamp 190 for notifying the driver that it is in the hand-handling mode. Turn on 190. The handling mode lamp 190 is provided around the driver's seat 6S of the cabin 6 and is specifically disposed on the operation panel of the operating device 6C. Note that the control device 150 may display “handling mode ON” or the like on the monitor 6D instead of the handing mode lamp 190.

  In addition, the control device 150 executes the red pepper speed correction control in order to suppress a decrease in the rotational speed of the red pepper 5F when the engine low speed control is executed. The rotary speed correction control corrects the rotational speed of the hot car 5F by controlling the hot motor 191 that is a drive source of the hot gear transmission mechanism 69. In other words, the red pepper motor 191 is connected to the control device 150, and the control device 150 executes the shift control of the redshift gear mechanism 69 by controlling the red pepper motor 191. When the handling mode is enabled and the engine low speed control is executed, the control device 150 controls the speed change mechanism 69 by the speed change motor 191 so that the rotation speed of the speed change 5F is controlled by the engine low speed control. The speed is changed to the high speed side so that the rotation speed before execution is obtained. Note that, in the red pepper speed correction control, the rotational speed of the red pepper 5F is shifted to the high speed side so as to be the rotational speed before the execution of the engine low speed control, but there is no particular limitation as long as the speed is shifted to the high speed side. . That is, in the rotation speed correction control, if the rotation speed of the red pepper 5F is equal to or less than the rotation speed before execution of the engine low speed control and is larger than the rotation speed of the red pepper 5F when the rotation speed correction control is not executed, Any rotation number may be sufficient.

  The control device 150 is connected to a sheave motor 192 serving as a drive source for a sheave scraper (not shown) that cleans deposits adhering to the sheave surface (upper surface) of the sorting shelf 5C. When the handling mode is enabled, the control device 150 controls the sheave motor 192 to stop the operation of the sheave scraper.

  Further, the control device 150 is connected to a cutting clutch motor 193 serving as a driving source for a cutting clutch (not shown) provided in a power transmission path for transmitting the power of the engine 20 to the cutting device 7. The control device 150 transmits the power of the engine 20 to the cutting device 7 by engaging the cutting clutch with the cutting clutch motor 193, while cutting the power of the engine 20 by releasing the engagement of the cutting clutch. The transmission to the device 7 is cut off. When the handling mode is enabled, the control device 150 controls the reaping clutch motor 193 to release the engagement of the reaping clutch and interrupt the transmission of the power of the engine 20 to the reaping device 7. Here, the reaping device 7 is lifted and lowered by a reaping / lowering mechanism (not shown). When the reaping device 7 is lowered by the reaping / lowering mechanism, the control device 150 engages the reaping clutch by the reaping clutch motor 193. When the handling mode is enabled, the state where the engagement of the cutting clutch is released is maintained even when the cutting device 7 is lowered by the cutting lifting mechanism.

  In addition, it is preferable to determine the travel stop of the combine 1 in step S3 based on the detection result of the parking brake sensor 166. In this case, the control device 150 can reliably determine the state in which the combine 1 has stopped traveling. At this time, the control device 150 determines that the brake operation by the parking brake has not been performed in step S3, and if the hand switch 167 is turned on, the monitor 6D displays “After applying the parking brake”. A warning message such as “Please operate the hand switch” may be displayed. In addition, when the control device 150 operates the parking brake and stops the combine 1 in step S3, when the parking brake is released in the enabled state of the handling mode, the control mode 150 is changed from the enabled state. Mode switching control may be executed so as to be in an invalid state.

  Next, an example control flow relating to mode switching control in which the control device 150 switches the handling mode between the valid state and the invalid state will be described with reference to FIG. FIG. 12 is a flowchart of an example relating to mode switching control. In addition, FIG. 12 demonstrates the mode switching control performed in the state which made the combine 1 drive low speed.

  First, the control device 150 determines whether or not the engine automatic adjustment switch 161 is turned on based on the input result of the engine automatic adjustment switch 161 (step S11). If it determines with the engine automatic adjustment switch 161 being ON-operated (step S11: Yes), the control apparatus 150 will determine whether there exists a drive request | requirement of the threshing apparatus 5 (step S12). On the other hand, if the controller 150 determines that the engine automatic adjustment switch 161 is not turned on (step S11: No), the control device 150 proceeds to step S17 described later.

  If it determines with the control apparatus 150 having the drive request | requirement of the threshing apparatus 5 (step S12: Yes), it will determine whether the combine 1 is drive | working low speed (step S13). On the other hand, if it determines with the control apparatus 150 having no drive request | requirement of the threshing apparatus 5 (step S12: No), it will progress to step S17 mentioned later.

  Here, the determination of the low speed travel of the combine 1 in step S13 is performed based on the detection result of the travel potentiometer 164 or the vehicle speed sensor 165. That is, when the operation position of the travel operation lever 6H detected by the travel potentiometer 164 is a low speed position, the control device 150 determines that the combine 1 is traveling at a low speed, but at an operation position other than the low speed position. If there is, it is determined that the combine 1 is not traveling at a low speed. Alternatively, the control device 150 determines that the combine 1 is traveling at a low speed when the traveling speed detected by the vehicle speed sensor 165 is within a predetermined speed range that is a low-speed traveling, When it is out of the predetermined speed range, it is determined that the combine 1 is not traveling at a low speed.

  When determining that the combine 1 is traveling at a low speed (step S13: Yes), the control device 150 determines whether or not there is a culm to be cut by the reaping device 7 (step S14). On the other hand, when determining that the combine 1 is not traveling at a low speed (step S13: No), the control device 150 proceeds to step S17 described later.

  Here, the determination of the presence or absence of the harvested culm in step S14 is performed based on the detection result of the transported culm detection sensor 169 or the harvested culm detection sensor 170. That is, when the control device 150 detects the culm that is transported by the transporting culm detection sensor 169, it determines that there is a culm that is harvested by the reaping device 7, while the transported culm is not detected. Then, it is determined that there is no cereal that is cut by the cutting device 7. Alternatively, the control device 150 determines that there is a culm to be harvested by the reaping device 7 when the reaping target culm is detected by the reaping culm detection sensor 170, but if the reaping target culm is not detected, It is determined that there is no harvesting culm to be trimmed by the device 7. Therefore, the control device 150 is configured to check the switching to the effective state of the handling mode in a state in which the transporting kernel detecting sensor 169 detects the operating kernel. In addition, the control device 150 is configured to check the switching to the effective state of the handling mode in a state where the harvesting kernel is detected by the harvesting kernel detection sensor 170.

  When it is determined that there is a cereal husk cut by the reaping device 7 (step S14: Yes), the control device 150 determines whether or not the handling switch 167 is turned on (step S15). On the other hand, if the control apparatus 150 determines that there is no grain cocoon cut by the reaping apparatus 7 (step S14: No), it will progress to step S17 mentioned later.

  If it is determined from the detection result of the handle switch 167 that the handle switch 167 has been turned ON (step S15: Yes), the control device 150 sets the handle mode to an effective state (step S16). On the other hand, when the control device 150 determines from the detection result of the handle switch 167 that the handle switch 167 has not been turned ON (step S15: No), the controller 150 sets the handle mode to an invalid state (step S15). S17).

  When step S16 or step S17 is executed, control device 150 returns to step S11 again and repeatedly executes the control flow related to the mode switching control described above.

  From the above, when the cereal is detected by the transported culm detection sensor 169 or the cutting culm detection sensor 170 in step S14, the control device 150 disables the handling mode by the mode switching control.

  The mode switching control described above is an example, and for example, the following steps may be further added. The control device 150 may determine whether or not the regulating member 14 is in the open position L1 before determining whether or not the hand switch 167 is turned on (execution of step S4 or step S15). . That is, when the control device 150 determines from the detection result of the restriction member position detection sensor 172 that the restriction member 14 is in the open position L1, the control device 150 determines that the effective condition of the handling mode is satisfied. If it determines with it being in the control position L2, it determines with not satisfy | filling the effective conditions of hand-handling mode. For this reason, when the operator moves the restricting member 14 to the open position L1, it is possible to satisfy the effective condition of the handling mode and to automatically switch the handling mode to the enabled state. .

  Further, the control device 150 may determine whether or not the reaping device 7 is driven in conjunction with the determination in step S14. In other words, the control device 150 determines that the effective condition of the handling mode is satisfied unless the cutting drive state detection sensor 171 detects the driving of the cutting device 7, while the cutting drive state detection sensor 171 determines that the cutting device 7 When the drive is detected, it is determined that the effective condition of the hand handling mode is not satisfied. In other words, the control device 150 performs the mode switching control when the husk is detected by the transporting husk detection sensor 169 or the cutting husk detection sensor 170 and the driving of the cutting device 7 is detected by the cutting drive state detection sensor 171. The hand handling mode is disabled and the switching of the hand handling mode to the enabled state is checked. In addition, when the handling switch 167 is turned ON in a state where the corn straw is detected by the transporting cocoon detection sensor 169, the control device 150 displays “after processing the cocoon of the cutting part” on the monitor 6 </ b> D. A warning message such as “Please operate the hand switch” may be displayed.

  Further, before determining whether or not the hand switch 167 is turned on (execution of step S4 or step S15), the control device 150 sets the shift speed of the auxiliary transmission described above to a neutral shift speed or a low speed. You may determine whether it is a gear stage. That is, if the control device 150 determines that the gear position of the sub-transmission device is a neutral gear position or a low-speed gear position, the control device 150 determines that the effective condition of the handling mode is satisfied, while the gear position of the sub-transmission device If it is determined that is not a neutral shift speed or a low speed shift speed, it is determined that the effective condition for the handling mode is not satisfied. Further, when the handwheel switch 167 is turned on in a state in which the shift stage of the sub-transmission device is determined to be a high-speed shift stage, the control device 150 displays “the sub-shift is set to neutral”. Please operate the handle switch after returning. "

  Further, the control device 150 determines whether or not the handling switch 167 has been turned ON (execution of step S4 or step S15), and the amount of impurities and grains moving on the sorting shelf 5C is You may determine whether it is below a predetermined flow rate. That is, if the controller 150 determines from the detection result of the flow sensor 173 that the foreign matter and the grain are below a predetermined flow rate, the control device 150 determines that the effective condition of the handling mode is satisfied, while the foreign matter and the grain If it is determined that the grain is larger than the predetermined flow rate, it is determined that the effective condition of the hand-handling mode is not satisfied. In addition, when the handling switch 167 is turned on in a state where it is determined that the impurities and the grains are larger than the predetermined flow rate, the control device 150 displays “turn the threshing portion for a while” on the monitor 6D. "Please operate the hand switch from the beginning."

  Further, the control device 150 determines whether or not the hand switch 167 has been turned ON (execution of step S4 or step S15), and the waste transported by the waste transport device is below a certain layer thickness. It may be determined whether or not. That is, if the controller 150 determines from the detection result of the exclusion layer thickness sensor 174 that the exclusion is equal to or less than a certain layer thickness, the control device 150 determines that the effective condition of the handling mode is satisfied. If it is determined that the thickness is larger than the certain layer thickness, it is determined that the effective condition of the hand-handling mode is not satisfied. In addition, when the handle switch 167 is turned on in a state in which the waste is determined to be larger than a certain layer thickness, the control device 150 displays “ Turn the button for a while and then operate the handle switch ".

  In addition, the control device 150 determines whether or not the hand switch 167 has been turned ON (execution of step S4 or step S15), and the cereals conveyed to the cereal conveyance device 10 have a certain thickness. You may determine whether it is below. That is, when the controller 150 determines from the detection result of the transported culm layer thickness sensor 175 that the culm is equal to or less than a certain layer thickness, the control device 150 determines that the effective condition of the handling mode is satisfied. Is determined to be larger than a certain layer thickness, it is determined that the effective condition of the hand-handling mode is not satisfied. In addition, when the handle switch 167 is turned on in a state where it is determined that the cereal to be transported is larger than a certain layer thickness, the control device 150 causes the monitor 6D to display “ Please turn the threshing portion for a while and then operate the handle switch ".

  In addition, when it is determined that there is no drive request for the threshing device 5 and the hand switch 167 is turned ON, the control device 150 displays a “hand switch after inserting the threshing clutch” on the monitor 6D. May be displayed. "

  Next, various controls of the control device 150 in the effective state of the handling mode will be described. When the emergency stop switch 168 is operated in the enabled state of the handling mode, the control device 150 executes engine emergency stop control for stopping the engine 20. Hereinafter, the control flow of the control device 150 when the emergency stop switch 168 is operated in the case where the handling mode is in the valid state will be described with reference to FIG. FIG. 13 is a flowchart of an example of the control device when operating the emergency stop switch.

  First, the control device 150 determines whether or not the emergency stop switch 168 is ON based on the input result of the emergency stop switch 168 (step S21). When determining that the emergency stop switch 168 is turned on (step S21: Yes), the control device 150 determines whether or not there is a drive request for the threshing device 5 (step S22). On the other hand, if the control device 150 determines that the emergency stop switch 168 is not turned ON (step S21: No), the control device 150 proceeds to step S21 again.

  If it determines with the control apparatus 150 having the drive request | requirement of the threshing apparatus 5 (step S22: Yes), it will perform the emergency stop of the engine 20 (step S23). On the other hand, if the control apparatus 150 determines that there is no drive request | requirement of the threshing apparatus 5 (step S22: No), it will progress to step S21 again.

  In step S23, when the engine 20 is urgently stopped, the control device 150 emits an alarm sound notifying that the emergency stop has occurred from the alarm buzzer 195. Further, when the engine 20 is stopped urgently in step S23, the control device 150 controls the feed chain clutch motor 126 to engage the groove portion 125 of the clutch arm 121 and the projection portion 124 of the shifter shaft 108 to move. The clutch engagement of the feed chain 13 is released by moving the body 103d to the neutral position.

  At this time, since the handling mode is in the valid state and the engine low-speed control is being executed, the control device 150 can stop the low-speed engine 20 and thus immediately stop the rotation of the engine 20. It becomes possible to do. In addition, since the control mode 150 is in the enabled state and the feed chain low speed side shift control is executed, the clutch of the low speed feed chain 13 can be released. 13 can be stopped immediately.

  After execution of step S23, the control device 150 determines whether or not an emergency stop cancellation operation has been performed (step S24). Here, the emergency stop release operation includes an emergency stop release operation by the emergency stop switch 168, an emergency stop release operation by the threshing operation lever, or an emergency stop release operation by the main power switch 196. The emergency stop release operation by the emergency stop switch 168 is a turning-off operation (OFF operation) of the emergency stop switch 168. When the control device 150 detects that the emergency stop switch 168 is turned off, the control device 150 determines that the emergency stop release operation is performed. On the other hand, when the control device 150 detects the emergency stop switch 168 ON operation, the emergency stop release operation is performed. Judge that there is no. Further, the emergency stop canceling operation by the threshing operation lever is to set the operation position of the threshing operation lever to an operation position other than the cutting position and the threshing position. When the control device 150 detects from the detection result of the threshing potentiometer 163 that the threshing operation lever is in an operation position other than the cutting position and the threshing position, the controller 150 determines that the emergency stop release operation has been performed, while the threshing operation lever If it detects that it exists in a cutting position or a threshing position, it will determine with the cancellation | release operation of emergency stop not being performed. Further, the emergency stop release operation by the main power switch 196 is an on operation (ON operation) after the main power switch 196 is turned off (OFF operation). Here, the main power switch 196 is a switch operated to supply power when the combine 1 is started, and is connected to the control device 150. When detecting an ON operation after detecting an OFF operation of main power switch 196, control device 150 determines that an emergency stop canceling operation has been performed, while detecting only an ON operation of main power switch 196, or If only the main power switch 196 OFF operation is detected, it is determined that the emergency stop canceling operation has not been performed.

  When determining that the emergency stop canceling operation has been performed (step S24: Yes), the control device 150 cancels the emergency stop (step S25). On the other hand, when determining that the emergency stop canceling operation has not been performed (step S24: No), the control device 150 proceeds to step S24 again.

  Here, the release of the emergency stop in step S25 is to stop the alarm sound emitted from the alarm buzzer 195 in step S23 and to start the engine 20 stopped in step S23. In step S25, it is preferable that the engine 20 can be started only when there is no drive request for the threshing device 5.

  After executing step S25, the control device 150 proceeds to step S21 again, and repeatedly executes the control flow of the control device 150 when the emergency stop switch 168 described above is operated. In step S23, the feed chain 13 whose clutch engagement is released by the feed chain clutch motor 126 is appropriately clutch-engaged by a control flow of the control device 150 described below.

  With reference to FIG. 14, a control flow for clutch-engaging the feed chain 13 by the control device 150 will be described. FIG. 14 is a flowchart of an example of a control device related to clutch engagement of the feed chain.

  First, the control device 150 determines whether or not there is a drive request for the threshing device 5 (step S31). When the control device 150 determines that there is a drive request for the threshing device 5 (step S31: Yes), the control device 150 controls the feed chain clutch motor 126 to engage the groove portion 125 of the clutch arm 121 and the projection portion 124 of the shifter shaft 108. By releasing the engagement, the feed chain 13 is engaged with the clutch (step S32). On the other hand, if the control device 150 determines that there is no request for driving the threshing device 5 (step S31: No), the control device 150 controls the feed chain clutch motor 126, and the groove portion 125 of the clutch arm 121 and the protruding portion 124 of the shifter shaft 108. And the clutch engagement of the feed chain 13 is released (step S33).

  Next, another control of the control device 150 in the enabled state of the handling mode will be described. When the hand-handling mode is in an effective state, the control device 150 controls the traveling device 3 so that the vehicle height of the combine 1 becomes a suitable position for the operator. The vehicle height adjustment control to be adjusted to is executed. For example, when executing the vehicle height adjustment control, the control device 150 lowers the vehicle height of the combine 1 so that the combine 1 is parallel to the horizontal plane. Alternatively, when the vehicle height adjustment control is executed, the control device 150 lowers the vehicle height of the combine 1 so as to incline downward toward the side (left side) where the grain feeder 10 is disposed in the left-right direction. Alternatively, when the vehicle height adjustment control is executed, the control device 150 lowers the vehicle height of the combine 1 so as to incline downward toward the side (front side) on which the grain feeder 10 is disposed in the front-rear direction. Alternatively, when the vehicle height adjustment control is executed, the control device 150 lowers the vehicle height of the combine 1 so as to be inclined downward in the front / rear / left / right direction to the side (left front side) on which the cereal conveyor device 10 is disposed. Thereby, the control device 150 can make the work position of the handling operation suitable for the worker who performs the handling operation, and can improve the ease of the operation, thereby improving the safety. be able to. The vehicle height adjustment control can be arbitrarily set by an on / off operation, and may be executed only when an on operation (ON operation) for executing the vehicle height adjustment control is performed.

  Further, the control device 150 executes the vehicle height adjustment control when the handling mode is in an effective state, but prohibits the vehicle height adjustment control when driving the grain discharge auger 9. Driving the grain discharge auger 9 includes, for example, extending the transport cylinder 9b or discharging the grain from the discharge port of the transport cylinder 9b. Thereby, when discharging the grain stored in the grain tank 8 from the grain discharge auger 9, the control device 150 appropriately supports the transport cylinder 9b of the grain discharge auger 9 in order to prohibit the vehicle height adjustment control. And stable grain discharge can be carried out.

  In addition, the control device 150 executes the vehicle height adjustment control when the handling mode is in an effective state, but prohibits the vehicle height adjustment control when the traveling speed of the combine 1 exceeds a predetermined speed. To do. Thereby, the control apparatus 150 can make driving | running | working of the combine 1 stable.

  Moreover, the control apparatus 150 performed vehicle height adjustment control, when the handling mode is an effective state. Here, in the vehicle height adjustment control, the vehicle height is automatically adjusted so that the vehicle height is set in advance, and the vehicle height is automatically adjusted so that the vehicle height is adjusted manually. There is a vehicle height manual adjustment control. When the handling mode is in an effective state, the control device 150 executes the vehicle height manual adjustment control as vehicle height adjustment control with priority over the vehicle height automatic adjustment control. Thereby, the control apparatus 150 can adjust the vehicle height of the combine 1 so that it may become the vehicle height arbitrarily set by the operator.

  Moreover, the control apparatus 150 may perform the grain discharge | emission stop control which stops discharge | emission of the grain by the grain discharge auger 9 when the handling mode is an effective state. That is, the control apparatus 150 can reduce the load of the engine 20 applied by the grain discharge by executing the grain discharge stop control. In the grain discharge stop control, only the grain discharge needs to be stopped, and the extension and movement of the transport cylinder 9b and the execution of the movement are allowed. Thereby, regardless of the position of the conveying cylinder 9b of the grain discharge auger 9, it becomes possible to perform the handling operation in the handling mode.

  On the other hand, when discharging the grain by the grain discharging auger 9, the control device 150 assumes that the effective condition of the handling mode is not satisfied when the handling switch 167 is turned on. It is good also as a disabled state. At this time, the control device 150 may display a warning message on the monitor 6D to the effect that “please stop the auger discharge and then operate the hand switch”, or the alarm buzzer 195 May be notified.

  Further, the control device 150 executes the engine low rotation control when the handling mode is in an effective state, but when the kernel discharge is performed by the kernel discharge auger 9, the rotation speed of the engine 20 is rated. You may perform control maintained at rotation speed. At this time, the control device 150 may display a warning message such as “Maintain engine speed during auger discharge” on the monitor 6D.

  As described above, according to the configuration of the present embodiment, the control device 150 performs the feed chain shift control, so that the gear 150 or the operation position of the traveling operation lever 6H can be controlled during the normal cutting operation. The conveyance speed of the feed chain 13 can be changed by the box 100. For this reason, the control apparatus 150 can optimize the layer thickness of the cereals conveyed to the threshing apparatus 5 by the cereal conveyance apparatus 10, and can improve the threshing efficiency by the threshing apparatus 5. Moreover, since the control apparatus 150 will perform feed chain low speed side shift control, if it becomes the enabled state of hand-handling mode, it can make the conveyance speed of the feed chain 13 low. Furthermore, since the control device 150 executes the engine low speed control when the hand-handling mode is enabled, the feed speed of the feed chain 13 can be further reduced. And can be threshed. Then, when the emergency stop switch 168 is turned on in the enabled state of the handling mode, the control device 150 executes the engine emergency stop control, so that the engine 20 is stopped. Since the speed is low, the feed chain 13 can be stopped more quickly.

  Further, according to the configuration of the present embodiment, the control device 150 executes the engine low speed control when the handing mode is enabled. At this time, the rotational speed of the engine 20 can be lower than the rated rotational speed and higher than the rotational speed during idling (idling rotational speed). For this reason, the control device 150 can secure sufficient power to execute the threshing process by the threshing device 5 while realizing a quick stop of the feed chain 13 when the emergency stop switch 168 is turned on.

  Further, according to the configuration of the present embodiment, the control device 150 executes idling rotation control when the traveling operation lever 6H is operated to the neutral position or the low speed position, or when the combine 1 stops traveling or travels at low speed. . For this reason, the control device 150 can reduce the rotational speed of the engine 20 to the idling rotational speed, and thus can reduce the fuel consumption amount and the exhaust gas exhaust amount of the engine 20. On the other hand, since the idling rotation control is not executed when the threshing clutch 81 is in the connected state, the control device 150 can maintain the conveyance speed of the feed chain 13 without reducing the rotation speed of the engine 20. The cereals harvested by the reaping device 7 can be quickly conveyed to the threshing device 5 for threshing treatment. And since the control apparatus 150 makes the handling mode effective state, in order to perform engine low-rotation control, since the conveyance speed of the feed chain 13 can be made low, the grain flour is supplied to the feed chain 13 smoothly. Threshing can be performed.

  Further, according to the configuration of the present embodiment, the control device 150 moves the regulating member 14 to the open position L1, thereby satisfying the effective condition of the handling mode and executing the feed chain low speed side shift control. Since the conveying speed of the feed chain 13 can be reduced, the cereal can be smoothly supplied to the feed chain 13 for threshing.

  Moreover, according to the configuration of the present embodiment, when the control device 150 determines that the reaping drive state detection sensor 171 determines that the reaping device 7 is driven, the control device 150 also transports the culm that is transported by the transporting culm detection sensor 169. Is detected, the handling mode is not activated. For this reason, even if the hand switch 167 is turned ON by an erroneous operation or the like during a normal cutting operation, the control device 150 does not set the hand mode to an effective state. Execution of the feed chain low speed side shift control can be suppressed, and a reduction in efficiency of the cutting operation can be suppressed.

  Further, according to the configuration of the present embodiment, the control device 150 does not set the handling mode to the valid state when the culm before chopping is detected by the chopped culm detection sensor 170. For this reason, for example, even when the harvesting device 7 starts the harvesting operation while the combine 1 is entering the field, if the harvesting kernel detection sensor 170 detects the kernel, the engine low-rotation control and feed Since it is possible to suppress execution of the chain low speed side shift control, it is possible to suppress a reduction in efficiency of the cutting operation.

  In this embodiment, the feed chain 13 is shifted to the high speed side or the low speed side by the stepped gear box 100, but a continuously variable transmission such as HST may be applied.

DESCRIPTION OF SYMBOLS 1 Combine 3 Traveling apparatus 5 Threshing apparatus 5a Threshing part 5b Sorting part 6 Cabin 6D Monitor 6H Traveling operation lever 7 Harvesting apparatus 8 Glen tank 9 Grain discharge auger 10 Grain conveying apparatus 11 Grasp 13 Feed chain 14 Restricting member 20 Engine 81 Threshing clutch 100 Gear box 101 Gear box input shaft 102 Dust exhaust fan rotating shaft 103 Transmission shaft 103d Moving body 108 Shifter shaft 111 Transmission motor 113 Gear box output shaft 113a Feed chain drive pulley 126 Feed chain clutch motor 150 Controller 161 Engine Automatic adjustment switch 162 Threshing clutch detection sensor 163 Threshing potentiometer 164 Traveling potentiometer 165 Vehicle speed sensor 166 Parking brake sensor 167 Hand switch 168 Emergency stop switch H. 169 Conveyance grain culm detection sensor 170 Trimming grain culm detection sensor 171 Trimming drive state detection sensor 172 Control member position detection sensor 173 Flow rate sensor 174 Exhaust layer thickness sensor 175 Conveyance culm layer thickness sensor 190 Hand handling mode lamp 191 192 Sheave motor 193 Mowing clutch motor 195 Alarm buzzer 196 Main power switch

Claims (5)

An engine, a feed chain for supplying cereals harvested by the mowing device to the threshing device, and a power transmission path from the engine to the feed chain, and the power from the engine is changed stepwise or steplessly. A feed chain transmission that outputs toward the feed chain, a cutting drive state detection sensor that detects a drive state of the cutting device, and a first that detects cereals conveyed from the cutting device toward the threshing device. And a control device that controls the engine and the feed chain transmission, and the control device controls the feed chain according to a vehicle speed or an operation position of a travel operation lever for shifting the vehicle speed. When the feed chain shift control for shifting the transmission and the valid conditions for the preset handling mode are met In addition, mode switching control for switching the handling mode from the invalid state to the valid state, and when the handling mode becomes the valid state, the rotational speed of the engine is reduced to a preset rotational speed. A regulation capable of regulating engine low speed control and engine emergency stop control for stopping the engine when an emergency stop operation unit is operated, and capable of regulating supply of hand-held cereals to the feed chain When the member is provided in the upper-side portion of the feed chain in the cereal conveyance direction and the restriction of cereal supply by the restriction member is released, it is determined that the effective condition of the handling mode is satisfied. a structure for switching the hand threshing mode automatically enabled state, the driving state of the cutting device is detected by the reaper drive state detection sensor, and the first culms detection Combine in a state where the culms being transported is detected, where the structure switched to the valid state of the hand threshing mode is check by the capacitor. When the second culm detection sensor detects a culm to be harvested before reaping by the reaping device, and when the culm to be harvested is detected by the second culm detection sensor, an effective state of the handling mode The combine according to claim 1, wherein the switching to is suppressed. An engine, a feed chain for supplying cereals harvested by the mowing device to the threshing device, and a power transmission path from the engine to the feed chain, and the power from the engine is changed stepwise or steplessly. A feed chain transmission for output to the feed chain, a second culm detection sensor for detecting a crop culm before reaping by the reaping device, a control device for controlling the engine and the feed chain transmission; A feed chain shift control for shifting the feed chain transmission according to a vehicle speed or an operation position of a travel operation lever for shifting the vehicle speed, and a preset handling mode. Mode switching that switches the handling mode from the invalid state to the valid state when the valid condition is satisfied When the handling mode is in an effective state, when the engine low speed control for reducing the engine speed to a preset speed set in advance and the emergency stop operation unit are operated, The engine emergency stop control is performed to stop the engine, and a restricting member capable of restricting the supply of the hand-held cereal to the feed chain is provided on the upper side of the feed chain in the cereal conveying direction. Provided, and when the supply restriction of the cereal supply by the restriction member is performed, it is determined that an effective condition of the handling mode is satisfied, and the handling mode is automatically switched to an effective state, A combine that is configured such that when the second culm detection sensor detects the culm to be harvested, switching to the effective state of the handling mode is suppressed. The combine according to any one of claims 1 to 3, wherein the set rotational speed is set to a rotational speed that is lower than a rated rotational speed and higher than an idling rotational speed. When the vehicle speed becomes a predetermined low speed including a stop state, or when the operation position of the traveling operation lever is operated to a predetermined low speed position including a neutral position, the control device is configured to idle the engine rotation speed. In the state in which idling rotation control is performed with a rotational speed and a threshing clutch provided in a power transmission path from the engine to the threshing device is connected, the idling rotation control is not performed and the handling mode is performed. The combine according to any one of claims 1 to 4 , wherein the engine low-speed control is executed when the engine is in an effective state.

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