JP2008005771A - Combine harvester - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To make a cutter drivable at the optimum number of revolutions according to the amount of waste straws without being influenced by variation of a threshing load of a combine harvester. <P>SOLUTION: The combine harvester is characterized in that the combine harvester is composed so that a generator G driven with regenerative power from an engine E or other driving parts of the combine harvester is installed and an electric motor M is provided in a driving part of the cutter so as to be rotated with electric current from the generator G to drive the cutter 1. Furthermore, the combine harvester is characterized in that the combine harvester is composed so that a waste straw detecting means 2 for detecting the flow of the waste straws is installed and the driving of the cutter 1 is stopped when the waste straws are not detected with the waste straw detecting means 2. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

The present invention relates to a combine that harvests and sets threshing planted cereal grains in a field.

It has been practiced to cut the waste threshed by the combine into a short cut with a cutter and discharge it to the field. The cutter model is a disk-type cutter that horizontally arranges the disc blades at a predetermined interval and cuts the waste that is conveyed horizontally. There is a cylinder type cutter that cuts with a fixed blade provided opposite to the blade.
Japanese Patent Application Laid-Open No. 2004-236581 JP 2003-79229 A

  As described in Patent Documents 1 and 2, a conventional combine waste cutter is driven by a power transmission by a belt and a pulley from a rotary shaft directly driven by a combine engine. For this reason, when the threshing load of the combine is large, the rotational driving force of the cutter is reduced, cutting may be worsened and clogging may occur. Moreover, even in the case of a small amount of waste, there is a waste of power by cutting at full rotation.

  An object of the present invention is to enable the cutter to be driven at an optimum rotational speed corresponding to the amount of waste without being affected by fluctuations in the threshing load of the combine.

The above object of the present invention is achieved by the following configuration.
That is, according to the first aspect of the present invention, the generator G driven by the regenerative power from the engine E of the combine or other drive unit is provided, and the electric motor M is provided in the drive unit of the cutter. The combine is configured to rotate with the current from the generator G to drive the cutter 1.

According to the first aspect of the present invention, the cutter 1 is driven by the generator G with almost no fluctuation of the driving load, so that the rotational driving force of the cutter 1 is not affected by the threshing load fluctuation.
According to the second aspect of the present invention, the waste detection means 2 for detecting the flow of waste is provided, and when the waste detection means 2 does not detect waste, the cutter 1 is stopped. It was set as the structure of the combine of Claim 1 characterized by these.

  According to the second aspect of the present invention, the cutter 1 stops when there is no waste, so that noise caused by driving the cutter 1 can be eliminated, and waste of power can be eliminated.

  Since the present invention is configured as described above, even when the amount of threshing husks of the combine is large and the driving load of the engine E is large, the cutter 1 is rotated at a predetermined rotational speed so as to cut the waste well and clogging. Does not occur.

  In particular, in the configuration of the second aspect, since the cutter 1 is not driven during mere movement even during mowing and threshing, generation of vibration and noise can be reduced.

  The whole combine is configured as shown in FIGS. 3 and 4, and a cutting device 12 is provided in front of the chassis 11 having the crawler traveling device 10. The cutting device 12 includes a plurality of weeding tools 13 for weeding the planted cereals, a plurality of pulling devices 14 for causing the planted cereals, a cutting blade 15 for harvesting the planted cereals, and the cutting blades A supply / conveyance device 16 is provided for sandwiching and transporting the cereals harvested at 15. The cereals harvested by the cutting blade 15 are transported upward by the supply and transport device 16, taken over by the cereal threshing and transporting device 17, supplied with the tip into the threshing device 18, and threshed. It is cut short by the cutter 1 provided at the end and released to the field.

  The middle to rear part of the cereal threshing and conveying device 17 is composed of a feed chain 19 and a clamping rod 20 provided to face the feed chain 19, and the driving force is transmitted from the engine 1 to the hydraulic transmission. A driving force is transmitted to the feed chain 19 via the clutch.

  Further, the output of the hydraulic transmission is transmitted to the mission of the crawler traveling device 10 and also to the reaping device 12. Therefore, the drive speed of the feed chain 19 is changed in synchronism with the traveling speed of the crawler traveling device 10, that is, the harvesting speed of the corn straw and the transfer speed of the feeding and conveying device 16, and is supplied and conveyed according to the processing amount of the corn straw. The transfer speeds of the device 16 and the cereal threshing and conveying device 17 are shifted synchronously, and the takeover is performed smoothly so that the cereals are not clogged.

The output of the engine 1 is also used to drive the handling cylinder, the second processing cylinder, the grain discharge auger 21, and the like.
FIG. 1 is a driving force transmission diagram of cutter driving, in which a generator G is driven by an engine E, and electric power generated by the generator G is supplied to a cutter driving motor M via an inverter 3 to drive a driving shaft of the cutter 1. And the surplus power is stored in the battery 4. As shown in FIG. 2, the rotation of the cutter 1 is variable from a low speed rotation (for example, 1000 rpm) to a high speed rotation (for example, 1500 rpm), and is rotated at a high speed when there is a large amount of waste. As the rejection detection means 2 of the present invention, a clamping sensor 5 for sensing the movement of the feed chain 19 or the clamping rod 20 is provided, and the rejection is determined based on the signal from the clamping sensor 5, and this signal indicates that the cereal is gone. Indicates that the cutter 1 is stopped after a predetermined time delay.

The reaping device 12 and the threshing device 18 stop driving when traveling on the road, but the cutter 1 may be stopped simultaneously.
Above the chassis 11, a grain tank 22 for temporarily storing grains threshed and sorted by the threshing device 18 is located on the right side of the threshing device 18 having the feed chain 19, and is located in front of the grain tank 22. An operation unit 23 for performing various operations such as the operation of the combine is placed.

  When the grain amount in the Glen tank 22 is full, the grain is discharged from the whipped cylinder 24 and the grain discharge auger 21 to the outside of the machine. The whipping cylinder 24 is configured to be turnable by an electric motor (not shown), and the grain discharge auger 21 is configured to be moved up and down by a hydraulic cylinder 25. And the grain discharge auger 21 is connected and integrated with the upper part of the whipping cylinder 24, and when the whipping cylinder 24 turns, the grain discharge auger 21 also turns together.

  A narrow guide 40 is provided so as to be fixed to the overhanging position and the storage position so as to protrude from the weeding tool 13 to the left side of the front part of the machine body and to guide the uncut cereals to the side so as not to step on the crawler.

A seat 26 on which a combine operator sits is provided at the rear of the operation unit 23 so that the operator can run the body, cut and carry out the grain.
FIG. 5 is a plan view of the operation unit 23. The main transmission lever 27 for switching the traveling direction back and forth and adjusting the traveling speed to the operation panel 36 on the left side of the machine body and the maximum traveling speed are set to a low speed, a standard speed and a high speed. A sub-shift lever 28 for switching to swift, a turning mode switching lever 29 for switching the turning to a sudden turning and a gentle turning, and a cutting and removal monolever 30 for intermittently driving cutting and threshing are provided. At the rear part of the operation panel 36, an auger turning lever 31 for operating turning of the grain discharge auger 21, a culm discharge lever 32, and a work machine switching lever 33 are provided upright.

  A parking pedal on which a parking brake acts when a handle 37 is erected on a front panel 38 provided on the front side of the operation unit 23, a steering lever 39 is erected to control the traveling direction, and is stepped on the lower floor of the front panel 38. 34 and a scraping pedal 35 that stops traveling and drives the reaping device 12 and the threshing device 18 are provided. This scrambling pedal 35 is used when cutting the grain cocoon at the time of cutting, that is, for pillow cutting.

  A display panel 41 is provided standing on the front side of the operation panel 36, and the display panel 41 normally displays the traveling speed of the aircraft and the degree of soot accumulation in the Glen tank 22 as shown in FIG. When the narrow guide 40 is fixed to the overhanging position in the Glen tank display portion of this display panel, as shown in FIG. 7, a message “Narrow guide is out” is displayed and a warning is given. This warning display may be displayed alternately with the Glen tank display, or may be displayed for a predetermined time when the narrow guide is extended. Further, it may be displayed for a predetermined time when the cutting / removing monolever 30 is turned on or off, or may be displayed when the cutting / removing monolever 30 is turned off and the auxiliary transmission lever 28 is driven at a high speed. In short, since it is dangerous to travel on the road with the narrow guide 40 protruding, the worker in the operation unit 23 is warned that the narrow guide 40 protrudes and is dangerous.

  When the harvesting operation is performed by advancing such a combine, the cereals planted in the field scene are weeded by the weeding tool 13 and then caused by the pulling device 14 and then by the cutting blade 15. Harvested. Thereafter, the harvested corn straw is transported rearward and upward by the supply and transport device 16 and is handed over and transported to the grain threshing and transporting device 17. The cedar that has been handed over to the cereal threshing and conveying device 17 is supplied to the threshing device 18 on the tip side and threshed and sorted, and the threshed culm is cut short by the cutter 1 and released to the field.

Next, accelerator control of the engine E by microcomputer control will be described.
FIG. 8 is a control block diagram showing the input of the sensor signal and the output of the control signal. The accelerator control selection signal 50 from the accelerator control execution selection switch for automatically performing the control, Grain stalk detection signal 51, drive signal 52 of reaping device 12 at the time of harvesting from the pedal 35, parking brake operation signal 53 from the parking pedal 34, clutch on / off signal 54 of the detachment monolever 30, and heel discharge lever The clutch on / off signal 55 from 32 is input to the arithmetic unit (CPU) 57 through the digital signal input processing 56. Further, the accelerator setting signal 59 from the accelerator position sensor and the shift position signal 60 of the main shift lever 27 are input to the arithmetic unit 57 via the analog signal input process 61. Further, an engine speed pulse 62 from the engine speed detection sensor and a vehicle speed pulse 63 from the vehicle speed detection sensor are input to the arithmetic unit 57 via the pulse signal input process 64 and the vehicle speed pulse counting means 65.

  In the arithmetic unit 57, the control shown in the following flowchart is performed, but the time is counted by the timer count process 58, the accelerator open output signal 68 is output through the accelerator open output process 66, and the accelerator closed output 67 is output through the accelerator close output process 67. A signal 69 is output.

Further, an engine stop output signal 72 is output from the arithmetic unit 57 through an engine stop output process 71.
The rotational driving force of the engine E is transmitted to a hydraulic transmission (HST), and power is transmitted from the hydraulic transmission to the crawler traveling device 10, and the main transmission lever 27 shifts the hydraulic transmission to change the traveling speed to the highest reverse speed. The speed of the engine E is increased to a predetermined speed to ensure the output of the hydraulic transmission, and the rotation of the engine E is raised and lowered by operating the main speed change lever 27. Control (hereinafter referred to as “IQ accelerator control”) is performed.

This IQ accelerator control is dangerous because it suddenly starts when the main speed change lever 27 is inadvertently operated.
For this reason, in the control of FIG. 9, when the parking pedal 34 is in the parking position and when the brake pedal 35 is in the brake position, the accelerator that increases the rotation of the engine even if the main speed change lever 27 is operated. Open output is not performed.

  That is, the drain clutch of the Glen tank 22 is turned off in Step S1, the mowing monolever 30 is turned off in Step S2, that is, the harvesting operation is not in progress, the gear shift operation is performed with the main transmission lever 27 in Step S3, and the target engine rotation is performed in Step S4. If the number is set and the IQ accelerator control is performed in step S5, the engine rotation in step S8 is targeted under the condition that the parking pedal 34 in step S6 is not operated and the condition that the scrambling pedal 35 is not operated in step S7. If it is equal to or higher than the rotation speed, the accelerator closing control in step S10 is performed to decrease the rotation, and if the engine rotation in step S9 is equal to or lower than the target rotation speed, the accelerator opening control in step S11 is performed to increase the rotation.

  Therefore, even if the parking pedal 34 is operated or the take-in pedal 35 is operated, the accelerator opening / closing control is not performed. In addition, the accelerator square opening control is not performed even if the shift operation is not performed by the main shift lever 27 or the IQ accelerator control is not performed even if the drain clutch of the glen tank 22 is engaged, the cut-and-move mono lever 30 is engaged.

  The control in FIG. 10 is a safety control in the case of harvesting and harvesting the cereal at the time of ripening, when the machine is stopped, the cutting blade 15 is held at a high position, and the working pedal 35 is depressed to work. This is because, when the take-in pedal 35 is suddenly returned, the risk of the engine starting at a high speed and the traveling clutch being engaged to suddenly start the aircraft is eliminated.

  Steps S15 to S18 are the same as the control in FIG. 9 described above. If the stapling pedal 35 is depressed in step S19, the process proceeds to step S21 to determine whether or not there is a cereal of the feeding and conveying device 16. If not, if the position of the main transmission lever 27 in step S20 is neutral, the process proceeds to engine speed determination in step S32. If not, the process proceeds to accelerator sensor determination in step S29.

  If cereals are present in the supply and transport device 16 in step S21, the process proceeds to the vehicle speed sensor pulse counter initial value set in step S22. If cereals are not present in the supply and transport device 16, vehicle speed sensor pulse reading processing in step S23 is performed. The read pulse is subtracted from the vehicle speed pulse counter, and the process proceeds to vehicle speed pulse counter determination in step S25.

  If the vehicle speed pulse counter is not zero in step S25, the process proceeds to the accelerator full-close monitoring timer counter initial value set in step S27, and further proceeds to engine speed adjustment control from step S32 to step S35. If the vehicle speed pulse counter is zero in step S25, if the main shift lever position determination in step S26 is a neutral position, the engine speed travelable rotation target set in step S28 is performed, and the process proceeds from step S32 to engine speed adjustment control in step S35. . If the position of the main shift lever in step S26 is not neutral, the process proceeds to accelerator sensor determination in step S29. If there is a change in the accelerator sensor, the process proceeds to engine speed adjustment control. If there is no change, the accelerator fully closed in step S30. If the accelerator full-close monitoring timer is not zero in step S31, the process proceeds to engine speed adjustment control. If it is zero, nothing is done.

  The control in FIG. 11 is a safety control in the case where the operation of harvesting and harvesting the cocoon at the end of the ripening is finished, and the vehicle travels. When the main shift lever 27 is returned to the high speed position and the scraping pedal 35 is returned, the engine becomes high. This is in order to eliminate this danger because the traveling clutch is engaged by rotation and the aircraft starts suddenly.

  In this flowchart, the difference from the flowchart of FIG. 10 is the part from step S47 to step S51. If the presence of cereal is detected in step S46, the monitoring timer initial value is set after the cereal sensor is turned off in step S47. The process proceeds from S58 to the engine speed adjustment control in step S61. If there is no grain hull in step S46, the vehicle speed conversion process in step S48 is performed. If the vehicle speed in step S49 is equal to or less than the predetermined value, the monitoring timer subtraction count is performed after the grain hull sensor is turned off in step S50, and the timer count in step S51 is zero. The process proceeds to determination of whether or not. If the vehicle speed is not less than the predetermined value in step S49, the accelerator control is terminated as it is. If the timer counter is zero in step S51, the process proceeds to step S52 to determine whether the main shift lever is neutral. If not, the process proceeds to the accelerator full-close monitoring timer counter initial value set in step S53.

The control in FIG. 12 is a control for reducing the engine rotation to idling rotation when the parking pedal 34 is depressed during IQ accelerator control.
In step S65, the drain clutch of the glen tank 22 is turned off. In step S66, the mowing monolever 30 is turned on, that is, in the harvesting operation. In step S67, the target engine speed is set. Shifts to parking pedal operation determination. If the mowing monolever 30 is turned off in step S66 or the accelerator control switch is turned off in step S68, the accelerator control is terminated without doing anything.

  If the parking pedal is not operated in step S69, the accelerator full-close monitoring timer counter initial value set in step S70 is performed, and the process proceeds to engine speed adjustment control in steps S71, S72, S76, and S77. If the parking pedal is operated, the process proceeds to accelerator sensor change determination in step S73. If there is a change, the process proceeds to engine speed adjustment control. If there is no change, the accelerator fully closed monitoring timer counter subtraction process in step S74 is performed. If the accelerator full-close monitoring timer in step S75 is zero, the accelerator control is terminated as it is, and if it is not zero, the accelerator closed output in step S76 is performed.

  In this control, if the drain clutch of the glen tank 22 is engaged in step S65, the process proceeds to the accelerator fully closed monitoring timer counter initial value set in step S70, and the engine speed adjustment control in steps S71, S72, S76, and S77 is performed. Do not reduce the rotation speed.

  The control shown in FIG. 13 is a control that prevents the vehicle from suddenly starting when the clutch pedal 35 is released while the main shift lever is kept at the fastest forward speed or the reverse fastest speed during IQ accelerator control. If the scratching operation is being performed, the determination of the release operation of the scratching pedal in step S83 is a release operation, and if the main transmission lever is the fastest forward speed or the reverse fastest speed in step S84, the engine stop output is set in step S85. If it is not in the scratching operation in step S80, if the determination of the pedal operation in step S81 is an operation, the storage during the scratching operation in step S82 is performed, and the operation proceeds to the determination of the brake pedal release operation in step S83. If the main speed change lever is not the fastest forward speed or the reverse fastest speed in step S84, that is, if it is not the fastest speed, the memory release during the scraping operation in step S86 is performed and the engine stop process is not performed.

Power transmission block diagram of an embodiment of the present invention Cutter rotation speed graph of the embodiment of the present invention Overall side view of an embodiment of the present invention Overall plan view of an embodiment of the present invention Partially enlarged plan view of an embodiment of the present invention Partially enlarged side view of an embodiment of the present invention Partially enlarged side view of an embodiment of the present invention Control block diagram of an embodiment of the present invention Control flow chart of the embodiment of the present invention Control flow chart of the embodiment of the present invention Control flow chart of the embodiment of the present invention Control flow chart of the embodiment of the present invention Control flow chart of the embodiment of the present invention

Explanation of symbols

E Engine G Generator M Electric motor 1 Cutter 2 Exhaust detection means

Claims (2)

  A generator (G) driven by regenerative power from the combine engine (E) or other drive unit is provided, and an electric motor (M) is provided in the drive unit of the cutter. The combine configured to drive the cutter (1) by rotating with current from the machine (G).   A waste detection means (2) for detecting the flow of waste is provided, and when the waste detection means (2) does not detect waste, the cutter (1) is configured to stop driving. The combine according to claim 1.

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