JP6460680B2 - Combine - Google Patents

Description

  The present invention is based on the harvesting part that raises and harvests the cereal, conveys the harvested cereal toward the threshing part, the transmission that changes the driving speed of the reaping part, the traveling speed of the machine body, and the like. The present invention relates to a combine equipped with an electronic control unit for controlling a transmission.

  The harvesting unit of the combine raises the napped grain mash in the field by the pulling device and cuts it by the cutting blade, and transports the harvested corn straw to the threshing unit by a transporting device such as a stump transporter, a stock transporter, and a tip transporter. To do. In addition, the threshing unit provided at the rear of the reaping unit sandwiches and conveys the stock side of the cereals conveyed from the reaping unit with the threshing feed chain and the clamping rail, while facing the tip side of the cereals into the handling chamber. Degreasing treatment is performed by a handling cylinder provided in the handling room. In addition, the processed product after the grain removal treatment is sorted into slag and swarf by two methods of wind selection and rocking, among which slag is stored in a glen tank or sack, while swarf and dust are discharged. Discharge out of the machine with a dust fan.

  And the said cutting part is comprised so that the drive speed at the time of a cutting operation may be increased / decreased in synchronization with the traveling speed (vehicle speed) of a body. This is because the raised noodle grains in the field are raised to an appropriate standing posture regardless of the vehicle speed, or the thickness of the mushroom grains when the harvested grains are conveyed by the conveying device is made almost constant, thereby conveying the grains. It is intended to be transported to the threshing unit without stabilizing the posture and causing spillage or the like. In addition, when the driving speed of the threshing feed chain in the threshing unit is configured to increase and decrease in synchronization with the vehicle speed, the cereals can be smoothly transferred from the reaping unit to the threshing feed chain, and spillage can be prevented. Can do.

  However, if the driving speed of the cutting part is increased and decreased in synchronization with the vehicle speed as described above, the driving of the cutting part will occur if the vehicle speed is extremely reduced when corner cutting of the four corners of the field is performed. The speed is too slow to cause the lowering performance and cutting performance of the cutting blade. In addition, in order to reduce the number of hand-harvested cereals as much as possible by cutting the edges, if cutting is performed until the tip of the weed body and the heel strike or do not hit, the culm is not sufficiently squeezed at the end of cutting and spillage is likely to occur. Become. Similarly, when the harvesting part is lifted and the cocoon of the cocoon is harvested while avoiding the cocoon, the cutting of the cocoon becomes high and the posture of the cereal is not stabilized, and the spillage is likely to occur.

  Furthermore, if the reaping part is lifted to cut the cereal of the first stroke and the reaping of the next stroke is performed, and the reaping part is driven while turning or moving the aircraft, driving vibration and noise will be generated from the reaping part. In order to solve the problem, the driving of the cutting unit may be automatically stopped when the cutting unit is raised to a predetermined height to solve this problem. However, when performing such high harvesting with such a combine, the driving of the harvesting part may stop during the process, making it impossible to harvest the cereal.

  And, in the combine, the aircraft is often stopped to interrupt the mowing operation or the aircraft is moved backward for mowing, but when the aircraft is stopped or the aircraft is moved backward, the cutting unit remains driven. Then, in order to continue to generate drive vibration and noise from the cutting unit, the driving of the cutting unit is stopped at the time of stopping the machine body or reversely moving to eliminate this. However, in this case, if cereals remain in the conveying device of the cutting unit, the retention of cereals may become unstable and spillage may occur. There is something I want to do.

  Therefore, the transmission includes a transmission that changes the driving speed of the cutting unit and an electronic control unit that controls the transmission based on the traveling speed of the airframe, and the transmission to synchronize the driving speed of the cutting unit with the vehicle speed during the cutting operation. And the forced cutting command is issued by human operation to drive the cutting unit regardless of whether the aircraft stops, the aircraft moves backward, or the cutting unit rises. A combine has been developed in which the drive speed of the unit is set to a predetermined forced scraping speed that is relatively high, or the forced scraping speed can be freely changed (see, for example, Patent Documents 1 to 3).

Japanese Patent No. 3853216 Japanese Patent No. 3756120 Japanese Patent No. 5044349

  However, in the combine described in Patent Document 1 to Patent Document 3, it is assumed that the manual operation is continuously performed in order to issue a forced scraping command and set the reaper to a driving state. Yes. Therefore, although it is a short time, there is a problem that the operation burden is imposed on the operator, and thus the fingers are tired, and it is not possible to concentrate on other operations such as the lifting operation of the cutting unit that needs to be performed at the same time. In addition, when performing the above-mentioned cutting, the artificial operation timing is incorrect.For example, even if a forced scraping command is issued after cutting and the aircraft is stopped, forced scratching will occur after spilling has already occurred. There is no point in performing the operation, and the mowing unit is merely driven in vain.

  Similarly, if the drive of the cutting unit automatically stops while raising the cutting unit to perform high mowing, the cutting unit will stop driving even if you notice this and issue a forced scraping command. Since the aircraft has been further advanced from there, and the aircraft has advanced further from there, it is not possible to perform high cutting substantially, and it is necessary to cut again. Therefore, in any of the cases described above, it is necessary to carefully perform an artificial operation so as not to lose the timing for issuing the forced scraping command, and as a result, a troublesome operation is required from the operator. There is a problem.

  Therefore, in view of the above-described problems, the present invention reduces the operation burden on the operator when performing a manual operation to drive the cutting unit by forced scraping and the timing for issuing a forced scraping command. It is an object of the present invention to provide a combine that can efficiently perform a cutting operation without driving the cutting unit wastefully and without causing spillage or a state incapable of cutting even if the above is not considered.

  Further, as described in Patent Document 1, when the napped grain culm in the field is lying down, the driving speed of the reaping unit is set to a standard 1. There is a case where the mowing operation is performed by raising the speed by about 5 times and raising the performance. And even when carrying out such a fall mowing, there is a case where a manual operation is performed to drive the cutting part by forced scraping. If the cutting unit is driven at the take-up speed, there is a possibility that the fallen cereal can be surely raised and cannot be cut.

  Therefore, in view of the above-mentioned problems, the present invention provides a cereal that has fallen even when the napped cereal of the field is lying down when performing a manual operation to drive the cutting part by forced scraping. It is an object of the present invention to provide a combine that can surely raise and mow a cocoon.

In order to solve the above problems, first, the present invention first raises and harvests the culm and conveys the harvested culm toward the threshing unit, and a transmission that changes the driving speed of the reaping unit. If, e Bei electronic control device for controlling the transmission based on the running speed of the machine body, tuning the electronic control device, when the aircraft is moving forward is the traveling speed of the drive speed of the reaper is airframe However, when the aircraft is stopped or moving backward, in a combine that controls the transmission so that the driving speed of the cutting unit becomes zero, a forced stiffening command is once issued by human operation while the aircraft is moving forward. If it is issued, the driving speed of the cutting part is restricted so as not to drop below the preset forced scraping speed, while the forced scraping command is issued by human operation while the machine is stopped or reverse. If this happens, the artificial operation And controlling the transmission so as to force take-speed set the driving speed advance as far as the reaper between are.

Further, the present invention is the second, pre-Symbol electronic control unit is characterized by notifying the restricted state of the drive speed of the reaper.

Furthermore, when the present invention, the third, the driving speed of the reaper to tune to the running speed of the previous SL airframe, dissipate accelerated based on the lodging cutting command, the lodging mowing command is issued, A preset forced scraping speed based on the forced scraping command is changed to a lodging speed increased from a standard speed .

  According to the combine of the present invention, the electronic control unit controls the driving speed of the cutting unit so as to synchronize with the traveling speed of the aircraft, and a forced scraping command is issued once by an artificial operation while the aircraft is moving forward. In this case, the driving speed of the cutting unit is regulated so as not to drop below a preset forced scraping speed.If there is a risk of spilling or inability to cut, a forced scraping command is issued in advance. It is possible to prevent these problems beforehand.

  In addition, if the forced control command is issued once, that is, if the artificial operation is performed only once, the electronic control unit performs the forced control and continues to regulate the driving speed of the cutting unit. The conventional operation does not need to be performed continuously. Therefore, not only the operation burden on the operator can be reduced, but also the other operations that need to be performed at the same time can be concentrated, and an accurate cutting operation can be performed. It can be carried out.

  Furthermore, when the predetermined condition is satisfied, when the restriction of the driving speed of the cutting part based on the forced scraping command is canceled, the restriction of the driving speed of the cutting part by the forced scraping is canceled at an appropriate timing. Therefore, the driving speed of the cutting unit can be returned to the control synchronized with the traveling speed of the airframe, and the low-speed cutting performed by making the driving speed of the cutting unit slower than the forced scraping speed can be performed as usual.

  In addition, as the above condition, when detecting the state in which the aircraft stops or moves backward, the regulation of the driving speed of the cutting unit based on the forced scraping command is canceled, and the driving of the cutting unit is stopped. An artificial release operation is not required, and the operator is not burdened with the operation. In addition, if the regulation state of the driving speed of the cutting unit is notified, it is possible to eliminate an error in the forced scraping operation, and it is possible to appropriately perform the cutting operation.

  In addition, when a forced scraping command is issued by human operation while the aircraft is stopped or moving backward, the driving speed of the cutting part is set in advance only while the human operation is being performed. When the transmission is controlled so as to reach the take-up speed, the cereal residue remaining in the conveying device of the cutting unit is forcibly conveyed while the aircraft is stopped or reverse as in the conventional case, and the threshing process is performed without any residue. be able to.

Then, the driving speed of the cutting unit synchronized with the traveling speed of the aircraft is increased based on the overturning cut command, and when the overturning cut command has been issued, the forced Changing the scraping speed from the standard speed to the lodging speed increased to increase the driving speed when driving the harvesting part by forced scraping, which ensures the fallen cereal (lodging material) It can be raised and cut without spilling.

It is a left view of a combine. It is a top view of a combine. It is a top view of a control part. It is a schematic diagram of a threshing part. It is a sectional side view which shows the opening adjustment mechanism of a chaff sheave. It is a transmission system diagram of a combine. It is a block diagram of an electronic control unit. It is a main flowchart of an electronic controller. It is a flowchart of a cutting part drive control. It is a graph which shows the relationship between a running speed and a cutting part drive speed. It is a flowchart of sorting automatic control. It is a chart which shows the fin opening control range based on the cutting material and vehicle speed in sorting automatic control.

  Embodiments of the present invention will be described with reference to the drawings. As shown in FIGS. 1 to 6, the combine 1 that simultaneously performs cutting, threshing, selection of culm and culling processing is a self-removal combine that is a four-crop harvesting type that includes a multi-cylinder-handled axial threshing unit. The driving operation unit A is provided at the right front part in the aircraft traveling direction of the aircraft frame 3 having the left and right crawler type traveling devices 2 at the lower part, and the cutting unit B is not shown in the drawing from the left front part to the front of the driving operation unit A. It can be moved up and down by a cylinder. Further, a threshing portion C is provided behind the reaping portion B, and a harvesting portion D is provided on the right side of the threshing portion C. In addition, a waste treatment device E is provided behind the threshing portion C and the harvesting portion D.

  Hereinafter, the configuration of each part will be described. The driving operation unit A has a seat 6 attached to the upper surface of an engine cover 5 that covers the engine 4, and an operation column 8 that is erected from the floor 7 in front of the seat 6 has a lift described later. A front panel 11 including a shut switch 9 and an instrument panel 10 and a multi-steering lever 12 for performing a turning operation of the machine body and a lifting operation of the cutting part B are provided. A side panel 13 provided on the left side of the seat 6 operates a main transmission lever 15 that operates a traveling hydrostatic continuously variable transmission (traveling HST) 14 and a traveling auxiliary transmission mechanism that is disposed on the transmission case 16. An auxiliary transmission lever 17 is provided.

  The grip 15a of the main transmission lever 15 is provided with a forced scraping switch 18 constituted by a momentary switch and an overturning cut switch 19 constituted by an alternate switch. Further, on the side panel 13 behind the main transmission lever 15, a power clutch switch 23 for turning on and off a threshing clutch 20 and a reaping clutch 21 composed of tight pulleys via a power clutch motor 22, and automatic handling depth control and automatic direction control. In addition, an automatic switch 24 for turning on and off the horizontal automatic control, a sorting dial 26 including a sorting automatic switch 25, and the like are provided.

  Further, the cutting part B includes a transmission frame 27 that is formed in a substantially letter shape by combining an input case, a stockholder case, a lower transmission case, and the like, a pretreatment frame 28 that is attached to both ends of the lower transmission case, and the like. The engine 4 is driven through a threshing clutch 20, a conveyance HST 29 configured by a hydrostatic continuously variable transmission that changes the driving speed of the cutting part B, and a cutting clutch 21. A large and small weed board (divider) 30 is attached to the tip of the five weed pipes of the pretreatment frame 28. In addition, a narrow guide 31 extends rearwardly on the right and left weed boards 30, and a pulling device 32 that is raised between the left and right large weed boards 30 and winds a claw chain in the case is provided. Two assemblies are provided in pairs so as to face each other.

  Further, a reciprocating type cutting blade 33 is provided horizontally on the rear side of the pretreatment frame 28 so as to be movable left and right. On the cutting blade 33, two sets of star wheels 34 that mesh with each other and an upper portion thereof are arranged. A scoring device 36 composed of a belt 35 with protrusions is provided. Further, a lifting and conveying device 37 is provided from the scraping device 36 toward the threshing section C. The lifting and conveying device 37 includes a left and right scraped conveying chain 38, a tip conveying chain 39 having claws, a tip and a stock. It comprises an original transport chain 40, a handling depth transport chain 41, and their clamping guides and guide plates.

  And in this harvesting part B, the napped grain straw of the field is divided into the harvested grain shears and the unreached grain shears by the weeding board 30 and the narrow guide 31 provided at the lower front end of the harvesting part B, and then the right and left parts. The cereal that has entered between the grass plates 30 is pulled up by the nail of the pulling device 32, and then the stock of the culm is cut by the cutting blade 33 while being scraped by the scraping device 36. The cereals that are scraped backward by 36 are merged by the left and right scraping transport chains 38 and the tip transport chain 39 of the lifting and transporting device 37, and further processed by the processing depth transport chain 41. It is conveyed to the threshing part C by the tip / stock source conveyance chain 40 while adjusting the length.

  Further, as shown in FIG. 4, the threshing portion C is formed with a handling chamber 43 in the upper part of a machine frame including a front and rear wall, left and right side walls, a bottom plate, and a cylinder cover 42 covering the upper side. A first handling cylinder 47 having a threshing feed chain 44 for sandwiching and transporting the cereals conveyed from the part B along the handling opening, a sandwiching rail 45 provided on the cylinder cover 42, and a plurality of handling teeth 46 installed around the periphery. A semi-circular receiving net 48 provided below the first handling cylinder 47 is provided. In addition, a processing chamber 49 for processing sawdust mixed with grains that could not be shattered in the handling chamber 43 is provided in parallel from the rear end tip side of the first handling barrel 47 toward the rear of the machine body, A second handling cylinder 50 and a receiving net 51 are provided in the processing chamber 49. The threshing section C is directly driven from the engine 4 via the threshing clutch 20, but only the threshing feed chain 44 is further driven from the threshing clutch 20 by the power shifted by the transport HST 29.

  Further, below the first and second handling cylinders 47 and 50, there is provided a sorting chamber 53 comprising a swing sorting body 52 for sorting grains and the like leaked from the receiving nets 48 and 51 and a sorting air passage. Provided. Here, the oscillating sorter 52 is provided in an inclined shape that becomes higher as it goes to the rear end side, in order from the front end side thereof is a non-porous Glen pan 54, a chaff sheave 56 made up of a large number of fins 55, and a large number of saw teeth. A stroking rack 57 in which a plurality of racks are arranged side by side, and an integral frame body provided with a crimp net 58 below the chaff sheave 56, and the entire swing sorting body 52 swings back and forth by a swing mechanism (not shown). Doing exercise.

  On the other hand, the sorting air passage is caused by a wind-up action by a tang fan 59 provided below the front end side of the swinging sorter 52 and a turbo fan 60 provided below the central portion, and a crossing provided on the rear end side of the sorting chamber 53. The first and second object sorting air passages 62 and 63 are formed by the suction action of a dust exhaust fan (suction fan) 61 that is a flow fan. In combination with the above, the material that has leaked from the receiving nets 48 and 51 is sorted into slag and swarf by two methods of wind selection and rocking. In addition, dusts such as sawdust and dust sucked by the dust exhaust fan 61 are discharged to the rear of the threshing portion C through dust exhaust ports 61c formed in the upper and lower fan casings 61a and 61b.

  Further, below the crimping net 58 of the rocking sorter 52, the first helix 64 for collecting the first thing sorted by the rocking sorting action and the wind sorting action of the sorting wind and the second thing for collecting the second thing. A first receiving rod 66 and a second receiving rod 67 having a spiral 65 are provided. And the first thing (grain) laterally fed by the first helix 64 is transferred to the Glen tank 69 constituting the harvesting part D by the hulling helix 68 built in the hulling cylinder, and by the second helix 65 The second product (unselected grain, sawdust, etc.) that has been laterally fed is reduced again onto the chaff sheave 56 by the second reduction helix 70 built in the reduction cylinder. The grain tank 69 can temporarily store the grain and then discharge it to the outside by the discharge auger 71 or take it out of the bag using a shutter and a hanger provided at the lower part.

  Further, on the upper rear end side of the swinging sorter 52, a waste transporting device that transports the waste discharged from the handling chamber 43 after completion of the threshing process toward the waste processing device E provided at the rear. 72 is provided. This waste transporting device 72 has its start end facing the end of the threshing feed chain 44 and the transport end side is obliquely directed toward the inner side of the machine body. In addition, the tip side is configured to be conveyed by a claw chain. Further, the waste treatment apparatus E is constituted by a disk-type cutter (rejection cutter) 73, and this disk-type cutter 73 shreds the waste conveyed from the threshing part C by the waste conveying device 72. Released as cuttings to the mowing area.

  As shown in FIG. 5, the chaff sheave 56 of the swinging sorter 52 includes a large number of fins 55, and each fin 55 has an upper support pin 55 a that protrudes in the left-right direction and pivots on the side plate of the swinging sorter 52. On the other hand, the lower support pins 55b are connected in series via a movable plate (not shown), and the chaff sheave 56 is based on the synchronous swing of the fins 55 with the upper support pins 55a as fulcrums. The degree of opening can be changed.

  That is, an operating arm that is provided integrally with a predetermined upper support pin 55 a that constitutes the opening adjustment mechanism of the chaff sheave 56, a roller that is provided at the tip of the operating arm, and an outer surface portion of the swinging sorter 52. A guide plate 74 that is provided slidably and has an inclined guide portion 74 a that contacts the roller, a fin opening motor 75 that slides the guide plate 74 back and forth, and a sliding amount of the guide plate 74 is detected. A fin opening detection sensor 76 comprising a potentiometer for detecting the fin opening by means of the above, and a layer thickness sensor 77 comprising a potentiometer provided above the Glen pan 54 for detecting the layer thickness of the processed material on the Glen pan 54, The fin opening motor 75 is driven to rotate in the forward and reverse directions so that the fins 55 are synchronously swung to open the opening of the chaff sheave 56 (the Thereby making it possible to adjust the emission interval).

  The configuration of each part of the combine has been described above. Next, an electronic control device related to the driving of the cutting unit according to the present invention will be described. As shown in the control block diagram of FIG. 7, the electronic control unit includes two electronic control units (ECUs) 78 and 79 each comprising a microcomputer, and the units 78 and 79 can communicate with each other via a control area network (CAN). Tied. On the input side of one unit 78, a power clutch switch 23 for turning on and off the threshing clutch 20 and the mowing clutch 21, a transmission rotation sensor 80 for detecting the rotation speed of the transmission shaft provided in the transmission case 16, and a transport HST 29 Are connected to a conveyance rotation sensor 81 for detecting the output rotation number, a fall trimming switch 19 and a forced take-in switch 18.

  Further, on the input side of the unit 78, a power clutch potentiometer 82 for detecting the amount of movement of the threshing clutch 20 and the reaping clutch 21, a main transmission potentiometer 83 for detecting the operation position of the main transmission lever 15, and the trunnion shaft of the transport HST 29 are provided. A conveyance potentiometer 84 that detects an angle, a sorting automatic switch 25, a sorting dial 26, a layer thickness sensor 77, and a fin opening detection sensor 76 are connected.

  Further, on the output side of the unit 78, a power clutch motor relay 85 that rotates the power clutch motor 22 forward and backward, a transport motor 86 that operates the trunnion shaft of the transport HST 29, forward and reverse rotation, and speed switching during forward and reverse rotation. A transport HST relay 87, a fin opening motor relay 88 that rotates the fin opening motor 75 forward and backward, a sorting automatic lamp 89 that displays the sorting automatic work state, and a lodging cut lamp 90 that displays the lodging cut working state doing.

  On the input side of the other unit 79, a pickup sensor 91 that detects the rotation of the engine 4, a lift potentiometer 92 that detects the lift amount of the cutting part B, and a multi-detector that detects the tilt angle of the multi-steer lever 12. Steering lever potentiometer 93 and lift shut switch 9 are connected, and on the output side, the electronic buzzer 94 and lift shut switch 9 indicating the on / off state of the lift shut lamp 95 and the regulation state of the driving speed of the cutting part B are displayed ( A forced scraping lamp 96 for notification) is connected.

  Further, the electronic control device connected as described above repeatedly executes subroutines such as power clutch control, reaping portion drive control, transport HST control, and sorting automatic control shown in FIG. 8, and among them, reaping portion drive control. Is responsible for shifting the driving speed of the cutting part B based on the traveling speed (vehicle speed) of the airframe, and the transport HST control uses the power transmitted from the engine 4 via the threshing clutch 20 to the transport motor. 87, the trunnion shaft of the transport HST 29 (transmission device) is operated to change the speed, and the reaping part B is driven via the reaping clutch 21 provided on the downstream side of the transport HST 29. The power shifted by the transport HST 29 is branched and transmitted to the threshing feed chain 44 on the upstream side of the reaping clutch 21, so that the reaping portion drive control controls the driving speeds of the reaping portion B and the threshing feed chain 44. .

  Hereinafter, the details of the mowing unit drive control will be described with reference to the flowchart of FIG. 9. The mowing unit drive control starts from step S <b> 1 for determining whether the threshing clutch 20 is turned on and off. It progresses to step S2 which judges 21 on / off. Whether the threshing clutch 20 and the reaping clutch 21 are turned on or off is determined by the operating state of the power clutch switch 23. Further, if the cutting clutch 21 is engaged, the process proceeds to step S3 in which it is determined by the main transmission potentiometer 83 whether or not the aircraft is moving forward. If the aircraft is moving forward, it is determined whether the forced take-in switch 18 has been pressed (whether the switch has been turned on from off) (step S4).

  When the forced take-in switch 18 rises from off to on in step S4, the state of the speed restriction flag is determined (step S5), and the set state of the speed restriction flag is reversed every time the forced take-in switch 18 is pressed. As described above, the setting is made (step S6) or reset (step S7), and at the same time, the forced scraping lamp 96 is blinked or turned off. If the forced take-in switch 18 is not pressed in step S4, the state of the speed restriction flag is not changed (step S8). Next, the state of the speed restriction flag is determined (step S9). If the speed restriction flag is set, the process proceeds to the determination of the on / off state of the overturning switch 19 (step S10).

  Here, when the fall trimming switch 19 is turned off, the driving target speed of the cutting part B is set to a speed (K * vehicle speed) that is approximately proportional to the vehicle speed obtained from the mission rotation sensor 80 (step S11). The forced scraping speed is set to a preset standard speed (step S12). When the fall trimming switch 19 is turned on, a speed (K * vehicle speed * 1...) That is proportional to a value obtained by multiplying the driving target speed of the cutting part B by about 1.5 times the vehicle speed obtained from the mission rotation sensor 79. 5) is set (step S13), and the forced scraping speed is set to a preset lodging speed (step S14).

  Then, as the next step 15, it is determined whether or not the drive target speed of the cutting part B is larger than the forced scraping speed. If it is larger, the process returns to the main flow from the subroutine of the cutting part drive control. The drive target speed of B is replaced with the forced scraping speed (step S16), and the process returns similarly. If the speed restriction flag is reset in step S9, the process proceeds to the determination of the on / off state of the overturning cut-off switch 19 (step S17). The speed is set to a speed approximately proportional to the vehicle speed obtained from the mission rotation sensor 80 (K * vehicle speed) (step S18), or the driving target speed of the reaping part B is set to about 1.5 the vehicle speed obtained from the mission rotation sensor 79. A speed (K * vehicle speed * 1.5) proportional to the multiplied value is set (step S19).

  Further, the process proceeds to determination of the on / off state of the lift shut switch 9 (step S20). When the lift shut switch 9 is on, the height (lift amount) of the cutting part B obtained by the lift potentiometer 92 is set in advance. The process proceeds to a determination of whether the height is equal to or less than the set height (step S21). If the height is equal to or greater than the set height, the drive target speed of the cutting unit B is set to zero (step S22) and the process returns. If the lift shut switch 9 is turned off and if the height of the cutting part B is less than the set height, the lift shut switch 9 returns as it is.

  If the aircraft is not moving forward (stopped or reverse) in step S3, the speed restriction flag is reset, and the forced take-in lamp 96 is turned off at the same time (step S23). The process proceeds to step S24 where it is determined whether the switch 18 has been pressed. If the forced take-in switch 18 is pressed here, the process proceeds to step S10. On the other hand, when the forced take-in switch 18 is not pressed, the drive target speed of the cutting part B is set to zero (step S25) and the process returns.

  If the reaping clutch 21 is disengaged in step S2, the process proceeds to step S26 where it is determined whether the forced take-in switch 18 has been pressed. If the forced take-in switch 18 is pressed, a handling flag is set (step S27), and if not, the handling flag is reset (step S28). Then, the driving target speed of the reaping part B is set to a predetermined constant handling speed (step S29), and the process returns. Furthermore, if the threshing clutch 20 is turned off in the step S1, the process proceeds to the step S25.

  Therefore, in the cutting unit driving control described above, the driving target speed of the cutting unit B is mainly set, and in the transport HST control, the transport HST 29 is shifted so that the driving speed of the cutting unit B becomes the driving target speed. To do. Although a specific description of the transport HST control is omitted, the driving speed of the cutting unit B is obtained from the transport rotation sensor 81, and if the driving speed of the cutting unit B is lower than the driving target speed, the transport motor 86 is adjusted correctly. If the speed is higher than the drive target speed, the transport motor 86 is reversely rotated to decelerate the transport HST 29. If they are equal, the transport motor 86 is stopped and the shift operation of the transport HST 29 is stopped. Then, control is performed so that the drive speed of the cutting unit B becomes the drive target speed.

  When the target driving speed of the cutting unit B is set to be synchronized with the traveling speed of the airframe, in the cutting unit driving control, the speed is approximately proportional to the vehicle speed obtained from the mission rotation sensor 80 (K * vehicle speed). It is set (step S11, step S18) or set to a speed (K * vehicle speed * 1.5) proportional to a value obtained by multiplying the vehicle speed by 1.5 (step S13, step S19). However, actually, as shown in the graph showing the relationship between the traveling speed and the cutting unit driving speed in FIG. 10, if the driving speed of the cutting unit B is large and the conveying speed of the threshing feed chain 44 is too high, the handling cylinder 47, Since an unhandled portion is generated at 50, the upper limit of the driving speed of the cutting part B is set. In addition, when the driving speed of the cutting unit B becomes slow, the rotation of the transport HST 29 becomes unstable and the control of the transporting HST is not stable, so the lower limit of the driving speed of the cutting unit B is set. Therefore, the driving target speed of the cutting unit B is determined in steps S11, S13, S18, and S19 while taking into consideration such an upper limit and a lower limit.

  Next, the change in the driving speed of the reaping part B executed by the reaping part drive control and the transport HST control will be described in light of the actual reaping work. The threshing clutch 20 and the reaping clutch 21 are moved forward together. When carrying out the cutting operation while traveling, if the grain of the cutting material is not lying down, the cutting part B and the threshing feed chain 44 are driven at a standard driving speed proportional to the traveling speed (vehicle speed). Further, when the grain culm of the cutting material is lying down and the operator turns on the lying down cutting switch 19, the cutting unit B and the threshing feed are driven at a driving speed in a lying state that is proportional to 1.5 times the traveling speed (vehicle speed). The chain 44 is driven and can raise the fallen culm appropriately and at a higher speed than the standard to perform cutting.

  Further, when the cutting part B is lifted and the height of the cutting part B rises above the set height with the lift shut switch 9 turned on, the driving of the cutting part B and the threshing feed chain 44 is stopped. . Therefore, when the mowing operation is not performed by raising the mowing unit B, the driving of the mowing unit B and the threshing feed chain 44 can be automatically stopped, and the driving vibration and noise from the mowing unit B and the threshing feed chain 44 can be stopped. Can be prevented from continuing. It should be noted that the speed was increased by 1.5 times during the above-mentioned lodging trimming, but it is not always necessary to increase the speed by 1.5 times, and the point is that the speed is appropriate for properly raising the fallen cereal. The speed should be increased.

  In addition, when cutting at a low traveling speed, for example, when cutting while descending the slope at the field entrance, the tip of the weed body and the heel are barely cut to reduce the number of hand-cut cereals as much as possible. When cutting until it hits or does not hit, or when cutting the cocoon at the edge by lifting the heel while raising the cutting part (reaching work), the scum of the culm becomes insufficient, so There are cases where you want to mow while increasing squeezing speed to prevent spillage. Therefore, in this case, when the forced picking switch 18 is pressed once (the cutting speed restriction flag is set and the forced picking lamp 96 blinks), the driving speed of the cutting part B is increased to the forced picking speed. Therefore, the scraping speed can be increased and spillage can be prevented.

  In this case, if the forced picking switch 18 is pressed again (the cutting speed regulation flag is reset and the forced picking lamp 96 is turned off), the original driving speed of the cutting part B is restored. When the switch 18 is pushed or when it is not necessary to increase the driving speed of the cutting part B, it is possible to quickly return to the normal cutting operation state. Further, when the aircraft is stopped or moved backward, the cutting speed restriction flag is similarly reset. Therefore, even if the machine is moved forward again, it is not driven from the state in which the driving speed of the cutting unit B is increased, and the cutting operation can be resumed at the normal driving speed of the cutting unit B. Further, the forced scraping lamp 96 is provided on the front panel 11 and the like, and flashes and informs the regulation state of the driving speed of the cutting part B. Therefore, it is possible to easily determine the current situation and prevent an erroneous operation. Note that an intermittent sound may be emitted from the electronic buzzer 94 as a notification means.

  Further, when the driving speed of the cutting part B synchronized with the traveling speed is faster than the forced scraping speed, the driving speed of the cutting part B does not become the forced scraping speed even if the forced scraping switch 18 is pressed. The driving speed of the reaping part B that is synchronized is maintained. Therefore, even when the forced scraping switch 18 is accidentally pressed during high-speed cutting, the driving speed of the cutting unit B is not decelerated on the contrary, so that the cutting operation can be performed properly.

  Furthermore, when the forced scraping switch 18 is pressed once to increase the driving speed of the cutting part B, the driving of the cutting part B and the threshing feed chain 44 does not stop even if the lift shut switch 9 is turned on. Therefore, the height of the cutting part B when cutting while going down the inclined surface of the entrance of the field, or when cutting the culm while lifting the cutting part while lifting the cutting part (cutting work) Therefore, the driving of the cutting part B is not stopped, so that the cutting operation can be performed efficiently without being interrupted.

  And when driving | running | working is stopped or it is moving backward, the drive of the cutting part B and the threshing feed chain 44 stops. However, in this case, when the forced take-in switch 18 is pressed, the drive target speed of the cutting part B is set to the forced take-in speed, and the cutting part B and the threshing feed chain 44 are driven at the forced take-in speed. Therefore, when it is desired to thresh the cereals remaining in the lifting and conveying device 37 of the harvesting part B when traveling is stopped or the vehicle is moving backward, the cereals are not transferred from the lifting and conveying device 37. The forced take-in switch 18 may be kept pressed until it is done. At this time, if the forced scraping lamp 96 is configured to be continuously lit, it becomes clear that the forced scraping state is established.

  In addition, when handling the hand-cutted cereal meal with only the threshing clutch 20 included, the driving speed of the reaping part B becomes the handling speed, and in this case, the reaping clutch 21 is disengaged, so the reaping part B Is not driven, and only the threshing feed chain 44 is driven at the handling speed. However, in this case, there is a case where the culm remains in the lifting and conveying device 37 of the reaping part B, and this culm is desired to be threshed before being handled. In this case, when the forced take-in switch 18 is pressed, a handling flag is set. Only when this handling flag is set, control is performed so that the cutting clutch 21 is engaged in the power clutch control. Is done.

  Therefore, the reaping part B can be driven at the handling speed only while the forced take-in switch 18 is being pressed, and the cereals remaining in the lifting and conveying device 37 of the reaping part B can be threshed quickly. . Note that when the pushing operation of the forced scraping switch 18 is released, the handling flag is reset and only the threshing feed chain 44 returns to the original state driven at the handling speed. Therefore, in this case, the power clutch switch 23 is operated to turn on the cutting clutch 21, and then the forced picking switch 18 is pressed to forcibly drive the cutting portion B, and then the power clutch switch 23 is operated to operate the cutting clutch. Compared with the case where the same operation as described above is performed through the process of cutting 21, the operation can be simplified and the operation can be performed quickly.

  Next, the automatic sorting control will be described based on the flowchart shown in FIG. That is, in the automatic sorting control, the process starts from step S1 for determining whether the automatic sorting switch 25 is turned on or off. If the automatic sorting switch 25 is turned on, it is determined whether the threshing clutch 20 is turned on or off according to the operation state of the power clutch switch 23. Proceed to step S2. If the threshing clutch 20 is engaged, it is determined whether the forced take-in switch 18 is pressed (step 3). When the automatic sorting switch 25 is turned off or the threshing clutch 20 is turned off, the automatic sorting control is resumed without being executed, and the opening adjustment of the chaff sheave 56 is performed by manual control prepared separately. Is called.

  If the forced take-in switch 18 is not pressed in step 3, the vehicle speed obtained from the mission rotation sensor 80 is acquired (step 4). If the vehicle speed is in the low speed region, the opening control of the fin 55 at low speed is performed. A range is acquired (step 5). If the vehicle speed is in the middle speed range, the opening control range of the fin 55 at the middle speed is acquired (step 6). Further, if the vehicle speed is in the high speed range, the opening control range of the fin 55 at high speed is acquired (step 7).

  The opening control range is acquired from the control range for each vehicle speed provided in the opening control range for each cutting material as shown in the chart of FIG. When the standard 1 is selected, if the vehicle speed is medium, the rank is from 7 to 10. The minimum opening degree of the fin 55 can be obtained as 7 and the maximum opening degree can be obtained as 10.

  When the forced take-in switch 18 is pressed in step 3, the control range when the vehicle speed is low is applied as the opening control range of the fin 55 (step 5). When the opening control range of the fins 55 is determined, the flow rate of the processed material on the grain pan 54 is detected based on the layer thickness sensor 77, and this flow rate (layer thickness) and a flow rate optimal for sorting are set in advance. Compared with the set value (step 8), if the flow rate falls below the set value, the opening rank is lowered by one rank within the opening control range of the fin 55, whereby the opening degree of the fin 55 The fin opening motor 75 is driven (closed operation) while looking at the value of the fin opening detection sensor 76 so that the opening corresponds to the rank (step 9).

  When the flow rate is equal to the set value, the opening degree rank is maintained and the fin opening degree motor 75 is not driven (operation stop) (step 10). Further, if the flow rate exceeds the set value, the opening rank is increased by one rank within the opening control range of the fin 55, so that the opening of the fin 55 becomes an opening corresponding to the opening rank. Then, the fin opening motor 75 is driven (opening operation) while viewing the value of the fin opening detection sensor 76 (step 11).

  Therefore, in the automatic sorting control, the opening control range of the fins 55 is determined based on the vehicle speed and the cutting material condition indicated by the sorting dial 26, and the opening of the fins 55 is determined based on the flow rate of the sorting processed product. Since the selection is controlled so as to be optimal within the opening control range, the grain selection accuracy can be improved. When the forced take-in switch 18 is pushed during the automatic sorting control, the automatic sorting control is performed on the assumption that the vehicle speed is low regardless of the actual vehicle speed.

  That is, when the forced stapling switch 18 is pressed, the reaping part B and the threshing feed chain 44 are driven as described in the reaping part drive control, and the cereal residue remaining in the lifting and conveying device 37 of the reaping part B is removed. In this case, the amount of processing to be threshing is reduced, so that the selection accuracy is controlled by performing the selection automatic control in the opening control range of the fin 55 that the small supply amount, that is, the vehicle speed is low. Can be improved.

  More specifically, in the cutting unit drive control, when the forced take-in switch 18 is pushed when the aircraft is moving backward, the cutting unit B and the threshing feed chain 44 are driven. The amount of processing does not increase. At this time, assuming that the vehicle speed is high by the automatic sorting control, if the opening control range of the fin 55 is determined as a large supply amount, the fin 55 opens and the sorting accuracy is deteriorated. Therefore, such a state can be prevented beforehand by performing automatic selection control as described above.

  In the cutting unit drive control, the condition for returning to the normal cutting unit drive control from the forced scraping state is the pushing operation of the forced scraping switch 18 again, the stop of the machine, or the reverse drive. If the vehicle speed is higher than the vehicle speed when the forced take-in switch 18 is pushed during forward travel, it is necessary to return to the normal mowing unit drive control, or if it is added to the conditions, the slope at the field entrance is slowed down. If you perform the mowing work while descending at the same time and speed up the flattened field, you can quickly return to the normal mowing unit drive control. It can be driven at a speed synchronized with the vehicle speed, and the present invention is not limited to the above embodiment.

  Although explanation of the power clutch control is omitted, the power clutch control is sequentially performed by pushing the power clutch switch 23 in the on direction, and the threshing clutch 20 and the cutting clutch 21 are turned off, the threshing clutch 20 is turned on, and The threshing clutch 20 and the reaping clutch 21 are changed to the engaged state, and the threshing clutch 20 and the reaping clutch 21 are changed in the reverse direction by the pushing operation in the cutting direction. More specifically, when the operation command is issued by the power clutch switch 23, the power clutch motor 22 is adjusted while reading the value of the power clutch potentiometer 82 so that the threshing clutch 20 and the mowing clutch 21 are in the corresponding on / off positions. The clutch is controlled by rotating in the reverse direction.

DESCRIPTION OF SYMBOLS 1 Combine 18 Forced pick-up switch 19 Overlay cut switch 29 Conveyance HST (transmission)
32 Pulling device 33 Cutting blade 37 Lifting and conveying device (conveying device)

Claims (3)

Cutting and causing the culms, control and reaper for transporting the clippings culms threshing unit, a transmission for changing the drive speed of the reaper, the transmission based on the running speed of the aircraft Bei example an electronic control device for the electronic control device, when the aircraft is moving forward, the driving speed of the reaper is tuned to the running speed of the aircraft, when the aircraft has stopped, or reverse the In a combine that controls the transmission so that the driving speed of the cutting unit becomes zero, if the forced scraping command is issued once by manual operation during the forward movement of the aircraft, the driving speed of the cutting unit is reduced. While it is regulated so that it does not fall below the pre-set forced take-up speed, if a forced take- up command is issued by a manual operation while the aircraft is stopped or moving backward, the man-made operation is performed. The drive speed of the cutting part is set in advance only during Combine, characterized by controlling the transmission so as to be forced take-rate. The combine according to claim 1 , wherein the electronic control unit notifies a restriction state of a driving speed of the cutting unit. The driving speed of the cutting unit that synchronizes with the traveling speed of the aircraft is increased based on an overturning cut command, and when the overturning cut command is issued, a pre-set forced input based on the forced take-up command is issued. 3. The combine according to claim 2 , wherein the scraping speed is changed from a standard speed to a lodging speed increased .

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