JP2014087279A - General-purpose combine-harvester - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a general-purpose combine-harvester in which a reel is movably supported by a reaping part via a movable mechanism and the rotational speed of the reel is controllable by a reel speed changer and which is capable of suitably controlling a reel to fit a job without the need for performing troublesome manual operation.SOLUTION: A general-purpose combine-harvester according to the present invention comprises: forced raking-in operation means 69 which switches on and off forced raking-in control for rotating a reel 4 at a predetermined speed regardless of a vehicle speed; and a movable mechanism 6 for supporting the reel 4 so as to drive upward/downward and forward/backward. In the general-purpose combine-harvester, a control part 84, when detecting the switch-on state of the forced raking-in operation means 69 which executes the forced raking-in control, executes the forced raking-in control preferentially to reel rotation automatic control which controls the rotational speed of the reel 4 by a reel speed changer 54 on the basis of the vehicle speed. The movable mechanism 6 drives the reel 4 to move to a more backward and more downward raking-in position than a normal position when reel rotation is controlled automatically.

Description

  The present invention relates to a general-purpose combine that is supported by a reaper so that a reel can move through a movable mechanism, and that controls the rotational speed of the reel by a reel transmission.

  A cutting unit that scrapes and harvests crops with a rotating reel, a reel transmission that shifts the rotation speed of the reel, and a movable mechanism that supports the reel so that the reel can be moved is provided via the reel transmission. A general-purpose combine shown in Patent Document 1 that controls the rotation speed of a reel and moves the reel to an appropriate position via a movable mechanism is known.

  Further, a vehicle speed detection means for detecting the vehicle speed is provided, and the control section performs general-purpose reel rotation control for performing reel rotation automatic control in which the reel transmission device controls the rotation speed of the reel based on the vehicle speed detected by the vehicle speed detection means. Combines are also known.

Utility Model Registration No. 2503763 Japanese Patent No. 2855526

  In the general-purpose combine described in the above document, when performing various controls of the reel, it is necessary to manually operate the movable mechanism to move the reel to an appropriate position according to the content of the control. , Work efficiency is also reduced.

  Specifically, during the execution of the reel rotation automatic control for controlling the rotation speed of the reel by the reel transmission device based on the vehicle speed detected by the vehicle speed detection means, the reel is predetermined by the forced scratching operation means regardless of the vehicle speed. When the forced scraping control for rotating at a speed is executed, manual operation for stopping the reel rotation automatic control and moving the position of the reel to an appropriate position by a movable mechanism is required.

  The present invention is a general-purpose combine that is supported by a mowing unit so that a reel can move through a movable mechanism and controls the rotation speed of the reel by a reel transmission device, and performs reel control according to work without performing troublesome manual operation. It is an object to provide a general-purpose combine that can be appropriately performed.

  In order to solve the above-described problem, first, a reel transmission device 54 that includes a cutting unit 3 that scrapes and harvests crops with a rotating reel 4, and a vehicle speed detection that detects a vehicle speed, and a reel transmission device 54 that changes the rotational speed of the reel 4. Means 96 and a control unit 84 for controlling the rotational speed of the reel 4 via the reel transmission device 54 are provided. The control unit 84 uses the reel transmission device 54 to control the reel 4 based on the vehicle speed detected by the vehicle speed detection unit 96. In a general-purpose combine having automatic reel rotation control for controlling the rotation speed, forced scraping operation means 69 for switching whether or not to perform forced scratch control for rotating the reel 4 at a predetermined speed regardless of the vehicle speed, and raising and lowering the reel 4 And a movable mechanism 6 that is supported by the cutting unit 3 so as to be able to be driven and moved forward and backward, and the control unit 84 detects an input operation of the forced scratching operation means 69 that executes the forced scratching control. In this case, forced scraping control is executed in preference to the reel rotation automatic control, and the movable mechanism 6 drives the reel 4 to move to a scraping position behind and below the normal position during the reel rotation automatic control. It is characterized by that.

  Secondly, when detecting the turning operation of the forced scraping operation means 69 for stopping the execution of the forced scraping control, the control unit 84 stops the execution of the forced scraping control and the vehicle speed detection means 96 It is characterized in that the return control from the scraping position of the reel 4 to the normal position via the movable mechanism 6 is performed under at least one condition that the traveling of the airframe is detected.

  According to the above configuration, it is possible to appropriately perform reel control in accordance with work without performing troublesome manual operation, so that work efficiency is improved.

  Specifically, it is possible to easily switch from automatic reel rotation control to forced scraping control by turning on the forced scraping operation means, and at the time of this switching, the reel is scraped from the normal position. Manual operation to the position is reduced and operability is improved.

  In addition, while the control unit detects the turning operation of the forced scratching operation unit that stops the forced scratching control, the control unit stops the forced scratching control and the vehicle speed detection unit causes the vehicle to travel. According to the control to return the reel from the scraping position to the normal position via the movable mechanism on at least one condition as detected, execution of forced scraping control during non-working when the machine is stopped As soon as the stop operation is performed, it is possible to prevent an unexpected situation such as the reel from returning to the normal position from the pick-up position and winding up a crop or the like.

It is a top view of the general purpose combine to which the present invention is applied. It is a left view of the general purpose combine which applied this invention. It is a right view of the general purpose combine to which the present invention is applied. It is a side view of a cutting part and a reel. It is a side view of the general purpose combine which shows the state which lowered the cutting part with respect to the traveling body and raised the reel with respect to the cutting part. It is a side view of the general purpose combine which shows the state which raised the cutting part with respect to the traveling body and lowered the reel with respect to the cutting part. It is a power transmission system diagram of this general purpose combine. It is a perspective view of a control part. It is a rear view of a multi steering lever. It is a top view of a switch panel. (A) And (B) is the top view and side view which show the structure of a ground height detection means. It is a block diagram of a control part. It is a flowchart of the main routine of a control part. It is a flowchart of the subroutine of manual control. It is a flowchart of the subroutine of forced scratch control. It is a flowchart of the subroutine of lodging cut control. It is a side view which shows the structure of a threshing apparatus. (A) is a perspective view which shows the structure of the receptacle for soybeans, (B) is a perspective view which shows the structure of the receptacle for rice and wheat.

  1 to 3 are a plan view, a left side view, and a right side view of a general-purpose combine to which the present invention is applied, and FIG. 4 is a side view of a cutting part and a reel. The general-purpose combine shown in the figure is for harvesting crops such as rice, wheat, and beans. The general-purpose combine includes a traveling machine body 2 having a pair of left and right crawler type traveling devices 1L and 1R, and a front of the traveling machine body 2. And a movable reel 6 that supports the reel 4 on the side of the cutting unit 3 so as to be movable up and down and back and forth.

  The cutting unit 3 is integrally provided with a feeder 7 in the rear half and a cutting frame 8 in the front half, and a weeding body 9 projects forward from the left and right side walls of the cutting frame 8. A columnar scooping auger 11 extending in the left-right direction is supported on the lower part and the rear part between the left and right side walls of the left and right side walls so as to be rotatable about an axis. A cutting blade 12 is installed. Incidentally, the reel 4 is located between the left and right side walls of the plan view mowing frame 8.

  The feeder 7 includes a feeder conveyor 13 in the front-rear direction for conveying the harvested crop culm backward, and the feeder 7 is located on the side of the control unit 14 on the traveling machine body 2 side, which will be described later. In addition to being supported by the front part of the traveling machine body 2, the cutting frame 8 is formed in a left-right range extending from the front side of the control part 14 to the front side of the feeder 7.

  Between the cutting part 3 and the front part of the traveling machine body 2, a hydraulic lift cylinder (cutting part lifting actuator) 16 is provided that raises and lowers the cutting part 3 relative to the traveling machine body 2 by expansion and contraction. Yes. By operating the lift cylinder 16 to extend, the cutting unit 3 rises with respect to the traveling machine body 2, while by operating the lift cylinder 16 to reduce, the cutting unit 3 descends with respect to the traveling machine body 2.

  The reel 4 has a rotating shaft 17 that is driven to rotate about its own axis by power transmitted by means to be described later, and a polygonal shape in a side view that rotates integrally with the rotating shaft 17 (in the illustrated example, a hexagonal shape). ) And a pair of left and right side frames 18, 18 arranged in parallel and opposed to each other in a state of being separated from each other by a lateral frame 19 in the left-right direction. Therefore, it is formed in a prismatic shape in which the periphery and both left and right sides communicate with each other inside and outside and the inside is a cavity. In addition, a plurality of reel tines 21 that protrude downward are arranged at predetermined intervals on each horizontal frame 19 arranged at predetermined intervals around the axis of the rotating shaft 17.

  The crop culm in the field that has been picked up by the rotating reel 4 is cut by the cutting blade 12 that is driven to slide back and forth in the left and right direction, and is picked up by the picking auger 11 to the feeder 7 side. The crop culm introduced on the feeder 7 side is conveyed rearward to the traveling machine body 2 side by the feeder conveyor 13.

  In the left half of the traveling machine body 2, a threshing unit 22 for performing threshing processing of cereals such as harvested rice and wheat and sorting grains such as cocoons from the processed product threshed is installed. A Glen tank 23 that stores grains from the threshing unit 22 is disposed in the right half of the traveling machine body 2, and the control unit 14 into which an operator gets is installed in front of the Glen tank 23.

  The threshing unit 22 includes a handling chamber 24 into which crop culm from the feeder conveyor 13 is introduced, and a sorting chamber 26 formed immediately below the handling chamber 24. An extending cylindrical handling cylinder 27 is rotatably supported around its own axis, and a swinging sorter 28 that moves back and forth is installed in the upper part of the sorting chamber 26. A tang fan 29 for raising the sorting air obliquely upward at the rear is arranged, and the first spiral 31 and the second spiral 32 are arranged in the front and rear in the middle in the front-rear direction in the lower part of the sorting chamber 26.

  The cereals introduced from the feeder 7 to the threshing unit 22 are threshed while being conveyed backward by the rotating barrel 27 in the handling chamber 24, and the processed product falls into the sorting chamber 26. The processed material that has fallen into the sorting chamber 26 is swayed and sorted by the swaying sorter 28 and sorted (wind-selected) by the sorting wind. Specifically, the first thing that falls to the first spiral 31 side, the second thing that falls to the second spiral 32 side, and wastes such as sawdust that are carried rearward and obliquely upward are selected. By the way, the first thing is conveyed by the first spiral 31 as a grain into the grain tank 23, the second thing is introduced into the sorting chamber 26 by the second spiral 32 and re-sorted, It is discharged from the rear end side of the traveling machine body 2 to the outside of the machine.

  A chaff sheave 33 made up of a plurality of fins 33a arranged in parallel in the front-rear direction is installed in the latter half of the swing sorter 28. At the time of opening operation in which the fins 33a are rotated downward, the opening degree is increased, and the amount of the sorting air blown upward on the swing sorting body 28 is increased, while the fins 33a are horizontal. At the time of the closing operation that is turned in the direction, the opening degree becomes small, and the air volume of the selection air that blows up above the swinging selection body 28 decreases. By adjusting the air volume by opening and closing the fins 33a as described above, it is possible to perform the optimum air selection according to the amount of processed material.

  The grain in the Glen tank 23 is discharged out of the machine by the discharge auger 36 supported at the rear end of the traveling machine body 2. Specifically, the base end portion of the discharge auger 36 is supported by the traveling machine body 2 so that the whole can swing up and down and can be horizontally rotated, and the discharge portion that discharges the grain at the tip portion of the discharge auger 36 36a is provided, and the grain can be discharged on the spot by moving the discharge portion 36a of the discharge auger 36 to a predetermined position by swinging up and down or horizontally.

  The movable mechanism 6 includes a pair of left and right advancing / retracting arms 37 and 37 supported by the feeder 7 so as to be swingable back and forth, a lifting arm 38 supported by each advancing and retracting arm 37 so as to be swingable up and down, and each advancing and retracting arm 37. And a feeder 7 and a hydraulic advance / retreat cylinder 39 (reel advance / retreat actuator) 39 that swings the advance / retreat arm 37 back and forth by an expansion / contraction operation. A hydraulic lifting cylinder (reel lifting actuator) 41 that drives the lifting arm 38 to swing up and down by operation is provided.

  Each advance / retreat arm 37 is a support end supported at the lower end side on the feeder 7 side, and each elevating arm 38 is a support end supported at the upper end side of the advance / retreat arm 37. , 38, the reel 4 in the left-right direction is rotatably supported by the rotating shaft 17.

  Then, the forward / backward arm 37 is swung forward by the extension operation of the forward / backward cylinder 39, so that the reel 4 moves forward with respect to the cutting portion 3, while the forward / backward arm 37 is swung backward by the reduction operation of the forward / backward cylinder 39. As a result, the reel 4 moves backward with respect to the cutting portion 3.

  Further, the lifting / lowering arm 38 is swung upward by the extension operation of the lifting / lowering cylinder 41, so that the reel 4 is raised with respect to the cutting unit 3, while the lifting / lowering arm 38 is swung downward by the reduction operation of the lifting / lowering cylinder 41. As a result, the reel 4 is lowered with respect to the cutting part 3.

  FIG. 5 is a side view of the general-purpose combiner showing a state in which the cutting part is lowered with respect to the traveling machine body and the reel is raised with respect to the cutting part, and FIG. It is a side view of the general purpose combine which shows the state which lowered | hung with respect to the cutting part. By the lift cylinder 16 and the lift cylinder 41 described above, the general-purpose combiner moves only the reel 4 to the highest position relative to the cutting part 3 while keeping the cutting part 3 lowered to the lowest position with respect to the traveling machine body 2. (See FIG. 5), and further, the cutting unit 3 is raised to the highest position with respect to the traveling machine body 2 while the reel 4 is lowered to the lowest position with respect to the cutting unit 3. (See FIG. 6).

  FIG. 7 is a power transmission system diagram of the present general-purpose combiner. The power generated by the engine 42 is branched into the power of the traveling system and the power of the work system on the most upstream side of the transmission. The power of the traveling system is transmitted in the order of traveling HST43 → traveling transmission 44 to drive the left and right crawler traveling devices 1L, 1R to travel. On the other hand, the power of the work system is intermittently transmitted to the threshing portion 22 via the threshing clutch 46, and the power on the threshing portion 22 side is intermittently transmitted to the reaping portion 3 and the reel 4 via the reaping clutch 47.

  The traveling HST 43 performs forward / reverse switching of power from the engine 42 side and continuously variable transmission, and transmits the output power to the traveling transmission 44. The traveling transmission 44 has a function of transmitting the power from the traveling HST 43 to the left and right crawler type traveling devices 1L and 1R at a constant speed and a function of transmitting the power from the traveling HST 43 at different rotational speeds. A left side clutch 48L that intermittently transmits to the traveling device 1L, and a right side clutch 48R that intermittently transmits power from the traveling HST 43 to the right crawler traveling device 1R are provided. For this reason, when one of the left and right side clutches 48L and 48R is disconnected and the other is connected, the traveling machine body 2 is turned to the disconnected side. Incidentally, if the left and right crawler type traveling devices 1L and 1R are driven at the same speed, the traveling machine body 2 travels straight.

  The power transmitted to the cutting unit 3 side is chain-transmitted to the feeder drive shaft 49 to convey and drive the feeder conveyor 13, and the power of the feeder drive shaft 49 is transmitted to the branch shaft 51. The power of the branch shaft 51 is transmitted to the take-up auger drive shaft 52 by a chain and drives the take-up auger 11 to be driven, and is also driven by the belt to the cutting blade drive shaft 53 to drive the cutting blade 12 by cutting.

  Further, the power of the branch shaft 51 is transmitted to the reel transmission device 54. The reel transmission 54 includes an input shaft 56 to which the power of the branch shaft 51 is transmitted in a chain, an input pulley 57 that rotates integrally with the input shaft 56, an output shaft 58, and an output pulley that rotates integrally with the output shaft 58. 59 and a V-belt 61 wound around an input pulley 57 and an output pulley 59. The power of the input shaft 56 is steplessly changed and transmitted to the output shaft 58 by the operation of the input pulley 57, the output pulley 59, and the V belt 61 via the reel speed change actuator 62 (see FIG. 11). Specifically, each of the input pulley 57 and the output pulley 59 is a split pulley that is divided in the width direction, and the reel speed change actuator 62 causes the pair of split bodies of the split pulleys 57 and 59 to move away from and approach each other. The speed ratio of the power transmitted from the input shaft 56 to the output shaft 58 is switched steplessly. The power of the output shaft 58 is transmitted to the rotary shaft 17 to drive the reel 4 to rotate.

  That is, the reel transmission device 54 is configured to change the rotation speed of the reel 4 steplessly by the reel transmission actuator 62. Further, the reel transmission device 54 is housed in a transmission case 38 </ b> A that constitutes one of the left and right lifting arms 38, 38.

Next, the configuration of the control unit 14 and other sensing will be described with reference to FIGS.
FIG. 8 is a perspective view of the control unit. The control unit 14 includes a seat 63 on which an operator is seated (see FIGS. 1 to 3), a shift lever 64 disposed on the side of the seat 63, a multi-steer lever 66 disposed in front of the seat 63, And a switch panel 67 disposed behind the lever 64.

  The shift lever 64 can swing forward from the neutral position by swinging the traveling HST 43 in the neutral state from the front / rear neutral position to the left / right side, while moving from the neutral position to the left / right other side. By swinging, it is possible to swing backward from the neutral position. The speed increasing operation to the forward travel side through the traveling HST 43 is performed by swinging forward from the neutral position of the transmission lever 64, while the traveling HST 43 is performed by swinging backward from the neutral position of the transmission lever 64. The speed increasing operation to the reverse traveling side is performed.

  A grip 64a is formed at the upper end portion of the speed change lever 64, and a momentary type take-up switch (forced take-up operation means) 69 that can be pushed while gripping the grip 64a is formed at the side of the grip 64a. An alternate type lodging switch (overlay cutting operation means) 71 is provided on the back side of the grip 64a.

  FIG. 9 is a rear view of the multi-steer lever. The multi-steer lever 66 swings up and down to manually operate the cutting unit 3 through the lift cylinder 16 and also swings left and right to perform a steering operation during vehicle travel.

  Specifically, the multi-steer lever 66 is swung forward from the front-rear neutral position to perform the lowering operation of the cutting unit 3 for reducing the lift cylinder 16 to swing the multi-steer lever 66 rearward from the front-rear neutral position. As a result, the lifting operation of the cutting part 3 for extending the lift cylinder 16 is performed, while the multi-steering lever 66 is swung from the left / right neutral position to the left side, whereby the right side of the left / right crawler type traveling devices 1L, 1R is moved. The left side of the left and right crawler type travel devices 1L and 1R is moved to the right side by performing a left turn operation to drive the vehicle body to the left side by driving at high speed to the left side and swinging the multi-steer lever 66 from the neutral position to the right side. In response to this, a right turn operation is performed to drive the vehicle at a high speed and turn the vehicle body to the right.

  That is, the multi-steering lever 66 is a cutting unit lifting / lowering manual operation unit that moves the cutting unit 3 up and down with respect to the traveling machine body 2 and also a steering operation unit of the traveling machine body 2. Further, a reel up / down manual operation means is provided on one of the left and right sides on the back side of the upper end portion of the multi-steer lever 66, and a reel forward / backward movement manual operation means is provided on the other left / right side.

  Specifically, a momentary reel raising switch 74A for raising and lowering the reel 4 with respect to the cutting unit 3 and a momentary reel lowering switch 74B for lowering are provided vertically as reel raising and lowering manual operation means. As a reel back-and-forth movement manual operation means, a momentary reel advance switch 76A for moving the reel 4 forward relative to the cutting unit 3 and a momentary reel retract switch 76B for moving backward are provided vertically.

  FIG. 10 is a plan view of the switch panel. The switch panel 67 has a crop switching dial (cutting crop detection means) 77 capable of selecting crops to be harvested in at least two types of beans and rice (specifically, soybeans, rice and wheat can be selected), A reel lowering height setting dial (reel lowering height setting means) 78 for setting a relative height of the reel 4 with respect to the harvesting portion 3 at the time of execution of forced scraping control which will be described later, and a threshing / reaping clutch switch 79 which is a seesaw switch. And.

  The threshing / reaping clutch switch 79 is a cutting that disconnects both the threshing clutch 46 and the reaping clutch 47 by switching between a state inclined to the left and right side, a state horizontal to the left and right, and a state inclined to the other side. The state is configured to switch between a threshing state in which only the threshing clutch 46 is connected and the cutting clutch 47 is disconnected, and a connected state in which both the threshing clutch 46 and the cutting clutch 47 are connected.

  Further, the general harvester 3 is provided with ground height detection means 81 (see FIG. 11) for detecting the ground height of the harvesting unit 3 with respect to the farm scene in the state of being close to the farm scene. .

  11A and 11B are a plan view and a side view showing the configuration of the ground height detection means. A left and right support shaft 82 formed over the entire left and right width on the lower surface side of the cutting portion 3 and a detection plate (detection body) 83 that swings up and down with the support shaft 82 as a fulcrum are provided. The height of the cutting unit 3 with respect to the ground is detected by detecting the vertical swing position with the potentiometer or the like when the lower end touches the field scene and the vertical swing operation is performed.

  The operation and control of each part using the various operation tools on the control unit 14 side and the control using the ground height detection means 81 are performed by the control unit 84 (see FIG. 12) including a microcomputer or the like.

Next, the configuration of the control unit 84 will be described with reference to FIGS.
FIG. 12 is a block diagram of the control unit. A threshing / reaping clutch actuator 86 for intermittently operating the threshing clutch 46 and the reaping clutch 47 is connected to the output side of the control unit 84 together with the lift cylinder 16, the lifting cylinder 41, the advance / retreat cylinder 39 and the reel speed change actuator 62 described above. Yes.

  On the input side of the control unit 84 are a reel up switch 74A, a reel down switch 74B, a reel forward switch 76A, a reel backward switch 76B, an overturn switch 71, a take-in switch 69, a crop switching dial 77, a threshing / reaping clutch switch 79 and In addition to the ground height detection means 81, the multi-lever steering sensor 87 (steering operation detection means) which is a potentiometer for detecting the left-right swing position of the multi-steer lever 66, and the front-rear swing position of the multi-lever 66 are determined. A multi-lever lift sensor (elevating operation detecting means) 88 that is a potentiometer to detect, a lift elevating sensor 89 that is a potentiometer that detects the relative elevation height of the cutting unit 3 relative to the traveling machine body, and the cutting unit 3 of the reel 4 A potentiometer that detects the relative height of the lift A lift sensor (height detection means) 91, a reel front / rear sensor 92 that is a potentiometer that detects a relative front / rear position (advance / retreat) of the reel 4 with respect to the cutting unit 3, and a reel rotation sensor 93 that detects the rotation speed of the reel 4. A threshing / cutting clutch sensor 94 for detecting the on / off state of the threshing clutch 46 and the cutting clutch 47 and a vehicle speed sensor (vehicle speed detecting means) 96 for detecting the traveling speed (vehicle speed) of the traveling machine body are connected.

  The control unit 84 having the above input / output drives the mowing unit 3 to move up and down with respect to the traveling machine body 2 via the lift cylinder 16 based on the detection value from the multi-lever lift sensor 88. Further, the control unit 83 raises and lowers the reel 4 with respect to the cutting unit 3 via the elevating cylinder 41 based on the detection values from the reel up switch 74A and the reel down switch 74B, and the reel forward switch 76A and reel reverse switch. Based on the detection value from 76 </ b> B, the reel 4 is moved back and forth with respect to the cutting unit 3 via the advance / retreat cylinder 39.

  Further, the control unit 84 appropriately performs automatic reel rotation control that links the rotation speed of the reel 4 with the vehicle speed detected by the vehicle speed sensor 96. Specifically, when the vehicle speed is increased, the rotation speed of the reel 4 is increased according to the increase amount, while when the vehicle speed is decreased, the rotation speed of the reel 4 is decreased according to the decrease amount.

  In addition to this, the control unit 84 executes the lodging trimming control for rotating the reel 4 at a high speed by the reel rotation automatic control due to the turning operation by the lodging switch 71, Forced scraping control is performed to rotate the reel 4 at a predetermined speed regardless of the vehicle speed. Hereinafter, the control content of the control unit 84 will be described in detail.

  FIG. 13 is a flowchart of the main routine of the control unit. When starting the process, the control unit 84 proceeds to step S1. In step S1, it is confirmed whether or not the lodging trimming control is being executed. If it is not being executed, the process proceeds to step S2, while if it is being executed, the process proceeds to step S3. In step S2, a forced scraping control subroutine process is executed, and when the process ends, the process proceeds to step S3.

  In step S3, it is confirmed whether or not forced take-in control is being executed. If it is not being executed, the process proceeds to step S4. If it is being executed, the process proceeds to step S5. In step S4, a subroutine process for lodging trimming control is executed, and when that process ends, the process proceeds to step S5.

  In step S5, it is confirmed whether the forced scraping control or the lodging trimming control is being executed. If either one is being executed, the subroutine processing is terminated while the scraping control and the lodging control are performed. If neither cutting control is executed, the process proceeds to step S6. In step S6, a subroutine process for means control is executed, and when that process ends, the process proceeds to step S7. In step S7, the reel rotation automatic control described above is performed, and this subroutine processing is terminated.

  During the process of the main routine, the forced trimming control and the means control are not performed while the forced trimming control is being executed. If the means control is not executed and neither the forced take-up control nor the overturning trim control is executed, the means control and the reel rotation automatic control can be executed.

  In other words, in addition to the automatic reel rotation control, the forced scraping control and the lodging trimming control are executed, and when one side of the forced scraping control and the lodging trimming control is performed, the other side is not performed. A control unit 84 is configured.

  FIG. 14 is a flowchart of a manual control subroutine. When processing of the subroutine is started, the process proceeds to step S11. In step S11, it is detected whether or not the reel raising switch 74A is turned on by a pressing operation. If the reel raising switch 74A is in the ON state, the process proceeds to step S12. In step S12, the elevating cylinder 41 is extended to raise the reel 4 relative to the cutting unit 3, and the process proceeds to step S13. In step S13, the elevation height of the reel 4 with respect to the cutting unit 3 at that time is stored as the storage reel height in the storage device 84a of the control unit 84, and the process proceeds to step S14.

  If the reel up switch 74A is in the OFF state in step S11, the process proceeds to step S15. In step S15, it is detected whether or not the reel lowering switch 74B is turned ON by a pressing operation. If the reel lowering switch 74B is in the ON state, the process proceeds to step S16, while if the reel lowering switch 74B is in the OFF state, step is performed. Proceed to S13. In step S16, the elevating cylinder 41 is contracted to lower the reel 4 with respect to the cutting unit 3, and the process proceeds to step S13.

  In step S14, it is detected whether or not the reel advance switch 76A is turned on by a pressing operation. If the reel advance switch 76A is in an ON state, the process proceeds to step S17. In step S17, the advancing / retreating cylinder 39 is extended to advance the reel 4 relative to the cutting unit 3, and the process proceeds to step S18. In step S18, the front / rear position of the reel 4 with respect to the cutting unit 3 at that time is stored in the storage device 84a as the storage reel front / rear position, and the process returns to the main routine shown in FIG.

  If the reel advance switch 76A is in the OFF state in step S14, the process proceeds to step S19. In step S19, it is detected whether or not the reel retract switch 76B is turned ON by a pressing operation. If the reel retract switch 76B is in the ON state, the process proceeds to step S20, while if the reel retract switch 76B is in the OFF state, step S19 is performed. Proceed to S18. In step S20, the advancing / retreating cylinder 39 is contracted to retract the reel 4 with respect to the cutting unit 3, and the process proceeds to step S18.

  According to the above process, the front and rear positions and the vertical positions of the reel 4 with respect to the cutting unit 3 are changed by reel manual control that is preferentially executed during reel manual operation. Is updated, and the position is stored in the storage device 84a.

  FIG. 15 is a flowchart of a subroutine for forced scraping control. When the process of the forced scraping control subroutine is started, the control unit 84 advances the process to step S31. In step S31, ON / OFF of the scratching flag indicating execution of forced take-up control is confirmed. If the take-up flag is OFF, execution of forced take-up control is stopped or being stopped. And the process proceeds to step S32. In step S32, it is confirmed whether or not the cut-off operation flag indicating the first stage of the forced stop control execution stop process is ON. If the cut-off operation flag is OFF, the execution stop described above is performed. It is determined that the process is not the first stage, and the process proceeds to step S33.

  In step S33, the presence or absence of an input operation (push operation) of the take-in switch 69, which is an operation for executing forced take-up control, is checked. If an input operation is detected, the process proceeds to step S34. End the process. In step S34, assuming that the forced scratching control is being executed, the scratching flag is set to ON, and the process proceeds to step S35.

  In Step S35, the crop switching dial 77 is used to confirm the harvested crop at that time. If the harvested crop is a bean (more specifically, soybean), the process proceeds to Step 36. In step S36, the mowing unit 3 is driven up to a predetermined height in order to prevent mud scraping during soybean harvesting, and the process proceeds to step S37.

  In step S35, when crops other than beans (specifically, rice or wheat) are harvested crops, the process proceeds to step S37. By the way, when harvesting rice and wheat, if the ground height of the harvesting part 3 is higher than a predetermined position when the cereal is lying down, the reel tine 21 does not reach and a residue is generated. In order to prevent this, a processing procedure from step S35 to step S37 is provided.

  In step S37, the reel 4 is moved from the normal position to the scraping position, and the process proceeds to step S38. In step S38, the reel 4 is driven to rotate (scratch drive) at a constant speed regardless of the vehicle speed, and this subroutine process is terminated. Incidentally, the rotation speed of the reel 4 at this time is set to a higher speed (more specifically, the highest speed) than during the reel rotation automatic control.

  Here, the normal position means an intermediate position in the advancing / retreating range when the movable mechanism 6 of the reel 4 is moved back and forth with respect to the cutting portion 3 of the reel 4 or the above-described storage reel front-rear position (in this example, the storage reel It is the intermediate position in the raising / lowering range when the reel 4 is moved up and down with respect to the cutting part 3 or the above-mentioned storage reel height (in this example, the storage reel height).

  Further, the scraping position is a position closer to the rear side (in this example, the rearmost position) in the advancing / retreating range when moving forward and backward with respect to the cutting part 3 of the reel 4, and with respect to the cutting part 3 of the reel 4. The lower position in the ascending / descending range when moving up and down (in this example, the lowest position), and this rake position is usually set behind and below the normal position. Incidentally, the vertical height of this scraping position can be changed and set by the reel lowering height setting dial 78 described above, and the limit is the lowest position of the reel 4 with respect to the cutting part 3.

  As described above, when the reel 4 is driven to be driven, the relative position of the reel 4 with respect to the cutting unit 3 is automatically moved to the cutting position, and even a fallen crop can be efficiently scraped. The labor is reduced and the efficiency of cutting work is improved when the forced scraping control is executed.

  In step S31, when the ON state of the scratching flag is detected, it is determined that the forced scratching control is being executed, and the process proceeds to step S39. In step S39, the presence or absence of detection of release of the push-in switch 69 that stops the execution of forced take-up control (pick-up operation) is confirmed. If this turn-off operation is not detected, the process proceeds to step S37. If a cutting operation is detected, the process of step S40 is advanced.

  In step S40, in order to stop the execution of the forced take-up control, the take-off flag is set to OFF and the take-off operation flag is set to indicate the first stage of the forced stop control execution stop process. Set to ON to stop execution of this subroutine processing.

  In step S32, when the ON state of the take-off operation flag is confirmed, the process proceeds to step S41. In step S41, the reel rotation automatic control described above is executed, and the process proceeds to step S42. In step S42, the ON / OFF state of the drive-in flag indicating that the forced stop control execution stop process is in the final stage is checked. If the OFF state of the drive-in flag is confirmed, the forced drive-in is performed. Assuming that the control execution stop processing is not yet in the final stage, the process proceeds to step S43.

  In step S43, the vehicle speed sensor 96 confirms whether or not vehicle body travel (more specifically, forward travel) is detected. If this detection is not confirmed, the subroutine processing is terminated while the travel is performed. If confirmed, the process proceeds to step S44.

  In step S44, assuming that the execution stop process of the forced take-up control has shifted to the final stage, the take-in travel flag is set to ON, and the process proceeds to step S45. In step S45, a scraping timer is set, a countdown from a scraping end waiting time that is a predetermined time to 0 is started, and the process proceeds to step S46.

  In step S46, it is confirmed whether or not the counting-down timer is set to 0 and the countdown is finished. If the countdown is not finished, the subroutine process is finished. If the countdown is finished (running of the vehicle body). If the scraping end waiting time has elapsed from the detection), the process proceeds to step S47.

  In step S42, when the ON state of the drive-in flag 42 is detected, the process proceeds to step S46. That is, during the count-down of the take-up timer, every time this subroutine is executed, the process of start → step S31 → step S32 → step S41 → step S42 → step S46 → end is repeated.

  In step S47, assuming that the forced stop control execution stop process has been completed, both the take-off operation flag and the take-in travel flag are set to OFF, and the process proceeds to step S48. In step S48, the reel 4 is moved from the scraping position to the normal position, and the execution of this subroutine processing is terminated.

  That is, even if the cut-off operation is detected, the reel 4 is held at the pick-up position until the travel of the vehicle body is detected, and even if the travel of the vehicle body is detected, it is not immediately moved to the normal position. From this travel detection, the elapse of a rake end waiting time, which is a predetermined time, is passed, and the reel 4 is moved from the rake position to the normal position.

  According to this configuration, the reel 4 is immediately returned from the scraping position to the normal position by the cut-off operation when the forced scratch control is performed during maintenance or when the forced scratch control is performed at the heel. It is possible to efficiently prevent situations such as contact with the surrounding work, etc., the cutting part 3 with the scissors or the like, and the machine being damaged.

  The forced scraping control moves the reel 4 to a predetermined position (scratching position) during the execution of the control, and moves the reel 4 to the original position (normal position) when the execution is stopped. This is a kind of reel movement control to be performed, and this reduces the troublesomeness of the operation.

  Incidentally, in the processing flow of FIG. 13, the state where the forced take-up control is not being executed means that the take-up flag, the take-off operation flag, and the take-up travel flag are all OFF. . Incidentally, the scoring flag, the scoring cut operation flag, and the scoring travel flag are all set to the OFF state in the initial state.

  FIG. 16 is a flowchart of a subroutine for lodging trimming control. When the processing of the subroutine for lodging trimming control is started, the control unit 84 advances the processing to step S51. In step S51, ON / OFF of the lodging flag suggesting execution of the lodging trimming control is confirmed. If the lodging flag is OFF, it is determined that the execution of the lodging trimming control is stopped or being stopped. Then, the process proceeds to step S52.

  In step S52, ON / OFF of the lodging cut operation flag which shows that it is the 1st step of the execution stop process of lodging trimming control is confirmed, and if the lodging cut operation flag is an OFF state, a process will be advanced to step S53. In step S53, it is confirmed whether or not the depression switch 71, which is an input operation for executing the lodging trimming control, is pressed. If this input operation is detected, the process proceeds to step S54. End. In step S54, assuming that lodging trimming control is being executed, the lodging flag is set to ON, and the flow proceeds to step S55.

  In step S55, the reel 4 is driven to move from the normal position to a later-described lying position, and the process proceeds to step S56. In step S56, the reel 4 is driven to rotate (fall down) at a higher speed than in the reel rotation automatic control, and this subroutine processing is terminated. Incidentally, the rotational speed when the reel 4 is driven to fall down may or may not be linked to the vehicle speed, but in this example, the reel 4 is driven at a high speed (specifically, regardless of the vehicle speed). To the highest speed).

  Here, the lying position refers to a forward position (in this example, the foremost position) in a forward / backward movement range when moving forward and backward with respect to the cutting part 3 of the reel 4 and also with respect to the cutting part 3 of the reel 4. The lower position in the ascending / descending range when moving up and down is usually set forward and below the normal position. Incidentally, the vertical height of the lying position may be changed and set by the reel lowering height setting dial 78 as described above, and the limit thereof is the lowest position of the reel 4 with respect to the cutting part 3. Become.

  As described above, when the reel 4 is driven to fall, the reel 4 is automatically moved to the lying position with respect to the cutting unit 3 and the reel 4 is driven at a high speed. It becomes easy to do. For this reason, this fall trimming control is also a kind of the reel movement control described above.

  In step S51, when the ON state of the lodging flag is detected, it is determined that the lodging trimming control is being executed, and the process proceeds to step S57. In step S57, it is confirmed whether or not the depression switch 71 is again pressed, which is a cutting operation for stopping the execution of the lodging trimming control. If the cutting operation is not detected, the process proceeds to step S56. If an operation is detected, the process of step S58 is advanced.

  In step S58, the lodging flag is set to OFF to stop the execution of the lodging trimming control, and the lodging flag operation flag is set to ON to indicate the first stage of the execution stopping processing of the lodging trimming control. Then, the execution of this subroutine processing is stopped.

  In step S52, when the ON state of the lodging cut operation flag is confirmed, it is determined that the execution stop of the lodging trimming control is the first stage, and the process proceeds to step S59. In step S59, the reel rotation automatic control described above is executed, and the process proceeds to step S60.

  In step S60, the vehicle speed sensor 96 confirms the presence or absence of vehicle body travel detection. If travel detection is confirmed, the process proceeds to step S61. Checking the ON / OFF state of the lodging travel flag indicating that the execution stop processing of the lodging trimming control is the final stage, and if the OFF state of the lodging travel flag is confirmed, the process proceeds to step S62.

  In step S62, assuming that the execution stop processing of the lodging trimming control has been performed after the final stage, the lodging traveling flag is set to ON, and the process proceeds to step S63. In step S63, a lodging timer is set, a countdown from a lodging end waiting time that is a predetermined time to 0 is started, and the process proceeds to step S64.

  In step S64, it is confirmed whether or not the countdown is finished because the lodging timer is 0. If not, the subroutine process is terminated. If the countdown is completed, the process proceeds to step S65. . On the other hand, if it is confirmed in step S61 that the lodging flag is ON, the process proceeds to step S64.

  On the other hand, if it is determined in step S60 that the vehicle is not traveling, the process proceeds to step S66. In step S66, confirmation of ON / OFF of the travel flag is performed. If the flag is ON, the process proceeds to step S67. If the flag is OFF, the subroutine process is terminated.

  In step S67, the trip running flag is turned on and the process is shifted to the final stage of the execution cut-off process of the fall trimming control. However, since the vehicle body is stopped, one step from the final stage of the execution stop process is performed. In order to reverse the vehicle, the lodging travel flag is set to OFF, and the process proceeds to step S68. In step S68, the lodging timer set in step 63 is reset to stop the countdown, and this subroutine processing is terminated.

  In other words, according to the processing contents from Step S60 to Step S68, after the turning operation of the lodging trimming control is performed, the traveling of the vehicle body is detected, and the traveling state is determined for a predetermined time (specifically, the above-described state). The process proceeds to step S65 when it is continuously detected. For this reason, for example, when the travel of the vehicle body is stopped, after the travel is detected again, if the travel is not continued for the lodging end waiting time, the process does not proceed to step S65.

  In step S65, assuming that the execution cut-off process of the lodging trimming control has been completed, both the lodging cut-off operation flag and the lodging traveling flag are set to OFF, and the process proceeds to step S69. In step S69, the reel 4 is moved from the lying position to the normal position, and the execution of this subroutine processing is terminated.

  That is, even if the cut-off operation is detected, the reel 4 is driven to move from the lying position to the normal position only when the traveling of the vehicle body is detected and the traveling is continuously continued for a predetermined time. Until the state is detected, the reel 4 is held in the lying position.

  According to this configuration, the reel 4 is automatically moved from the normal position to the lying position when starting the execution of the lodging trimming control, and the reel 4 is automatically restored from the lying position to the normal position when the execution of the lodging trimming control is stopped. Therefore, troublesome manual operation is not necessary, and efficient mowing work can be performed. Further, the reel 4 does not immediately return from the lying position to the normal position by the turning operation by the lying switch 71, but returns to the normal position from the lying position on the condition of traveling for a predetermined time. As a result, it is possible to efficiently prevent situations such as contact with the surrounding work or the like, or contact with the cutting unit 3 with a scissors or the like, resulting in damage to the machine.

  In general, when harvesting soybeans, it is necessary to lower the cutting part 3 as much as possible to reduce the margin of the ground in order to reduce uncut residue. When the control is executed, the reel 4 is lowered to the lowest position by the process of step S37 as described above, and the reel tine 21 may come into contact with the ground and scrape mud. When the forced scraping control is executed at the time of harvesting, the mowing unit 3 is driven up to a predetermined height by the process from step S35 to step S36. Reduces dirt.

  Incidentally, in the processing flow of FIG. 13, the state where the lodging trimming control is not being executed means that the lodging flag, the lodging cut-off operation flag, and the lodging traveling flag are all in the OFF state.

Next, another example of harvested crop detection means will be described with reference to FIGS.
FIG. 17: is a side view which shows the structure of a threshing apparatus, FIG. 18 (A) is a perspective view which shows the structure of the acceptor for soybeans, (B) shows the structure of the acceptor for rice and wheat. It is a perspective view. Below the first and second spirals 31 and 32, a receiving collar 97 that is U-shaped in cross section and extends in the direction of the spirals 31 and 32 is detachably provided. In addition to this, a receiving device 97 is also provided directly below the conveying device 98 that takes over the first item from the first spiral 31 and conveys it upward, and the conveying device 99 that takes over the first item from the second helix 32 and conveys it upward. It is installed detachably.

  The receiving rod 97 is integrally formed with band-shaped mounting seats 101 and 101 in directions away from the upper end portions on both sides in the width direction, and the pair of mounting seats 101 and 101 are brought into contact with the threshing device 22 side. Each cocoon 97 is installed in the threshing device 22.

  There are two types of receptacles 97, soybean receptacle 97A and rice / wheat receptacle 97B. Soybean receptacle 97A has a large number of holes 102 for removing mud. On the other hand, such a hole is not drilled in the rice / wheat cradle 97B, and this difference enables efficient sorting according to the crop.

  When the rice and wheat acceptor 97B is installed on the threshing device 22 side, the acceptor 97B comes into contact with the detection switch 103 provided on the threshing device 22 side and is turned on, while the soybean acceptor 97B is on. The notch-shaped portion 101a is formed in the mounting seat 101 of 97A, and even if this receiving rod 97A is installed on the threshing device 22 side, the detection switch 103 is in contact with the mounting seat 101 by the notched-shaped portion 101a. It does not hit and is held in the OFF state. By detecting ON / OFF of the detection switch 103, the control unit 84 can identify whether the harvested crop is rice / wheat or soybean.

  That is, the above-described cut crop detection means is configured by the presence or absence of the notch-like portions of the detection switch 103 and the receiving rod 97. Incidentally, this detection switch 103 is connected to the input side of the control unit 84 instead of the crop switching dial 77, and is used at the time of determination in step S35.

  As the harvested crop detection means, in addition to the above-described ones, when harvesting beans (specifically, soybeans), it is preferable to perform the harvesting operation with the harvesting unit 3 lowered as much as possible to the field scene side. Therefore, this ground height detection means 81 is used. For this reason, in step S35, the ground height detection means 81 is activated (specifically, the detection plate 83 is detected, and more specifically, a potentiometer (not shown) that detects the swing angle of the detection plate 83 is operated). If so, it may be determined that the harvested crop is soybean.

  Furthermore, the connection of an electrical device or circuit that is exclusively used for such soybean cutting (for example, the electrical connection of the potentiometer terminal or the conductive coupler) is detected, and depending on the presence or absence of this detection, the harvested crop is made of soybean. It may be determined whether or not there is.

  Further, in the above-described example, when the forced scratch control subroutine shown in FIG. 15 is executed, once the travel is detected by the processing of step S42 to step S46, the predetermined predetermined value is set even if the travel is stopped thereafter. After the elapse of time, the process proceeds from step S46 to step S47, and this is performed as shown in the travel flag (specifically, step S61 to step S64 and step S66 to step S68) shown in FIG. The content of the flow may be changed so that the process does not proceed from step S46 to step S47 unless the vehicle body is continuously detected for a predetermined time.

DESCRIPTION OF SYMBOLS 3 Cutting part 4 Reel 6 Movable mechanism 54 Reel transmission device 69 Take-in switch (forced take-up operation means)
84 Control unit (microcomputer)
96 Vehicle speed sensor (vehicle speed detection means)

Claims (2)

  A reel transmission (54) that includes a cutting unit (3) that scrapes and harvests crops with the rotating reel (4), and changes the rotational speed of the reel (4); and a vehicle speed detecting means (96) that detects the vehicle speed. And a control unit (84) for controlling the rotational speed of the reel (4) via the reel transmission (54). The control unit (84) controls the vehicle speed detected by the vehicle speed detection means (96). In a general-purpose combine having a reel rotation automatic control for controlling the rotation speed of the reel (4) by the reel transmission device (54) based on this, execution of forced scraping control for rotating the reel (4) at a predetermined speed regardless of the vehicle speed. A forced scraping operation means (69) for switching presence / absence, and a movable mechanism (6) for supporting the reel (4) on the cutting part (3) so that the reel (4) can be driven up and down and moved forward and backward, and the control unit (84) Execute forcible control If forced entry operation means 69 is detected, forced take-up control is executed prior to automatic reel rotation control, and reel (4) is rotated by movable mechanism (6). A general-purpose combiner that drives to move to the rear position and below the normal position during automatic control.   When the control unit (84) detects the turning operation of the forced scratching operation means (69) for stopping the execution of the forced scratching control, the control unit (84) stops the forced scratching control and executes the vehicle speed detection means (96). 2. The general purpose combine according to claim 1, wherein the return control from the scraping position of the reel (4) to the normal position via the movable mechanism (6) is performed on at least one condition that the traveling of the airframe is detected by .

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