JP2008278785A - Hand-feeding threshing apparatus of combine harvester - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To improve operation efficiency by eliminating trouble such as narrowing of an opening between a threshing feed chain and a nipping rail for nipping the plant foot side of hand-feeding threshing grain culms when performing hand-feeding threshing operation of hand-reaped grain culms left un-reaped in each place of a field or grain culms hand-reaped at four corners etc., of the field in such a state that a pretreating part is lifted to the vicinity of the most lifted position. <P>SOLUTION: The grain culm transporting speed of the threshing feed chain 13 can be changed over to a prescribed speed suitable for the hand-feeding threshing operation by operating a hand-feeding threshing switch 15 installed in a machine body during the hand-feeding threshing operation. Furthermore, a hand-feeding threshing control means 92 capable of cutting off the driving of the pretreating part 5 unnecessary during the hand-feeding threshing operation and then lowering the pretreating part 5 to the prescribed height simply by operating the hand-feeding threshing switch 15 is installed. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a combine hand-handling device that supplies hand-milled cereal grains and the like to a threshing unit to perform threshing processing.

In the conventional combine, even if the cutting speed of the harvesting changes and the amount of grain harvesting fluctuates, the grain transportation speed of the pre-processing unit and the threshing feed chain is linked to the cutting traveling speed so as to respond to the fluctuation. This makes it possible to obtain good cereal conveyance performance and to hand-cut cereals that have been left uncut in various parts of the field, or to put cereals that have been hand-cut at the four corners of the field into the threshing section. When performing the operation, the linkage state is released by operating the hand switch provided on the machine body, the threshing speed of the threshing feed chain is switched to a constant speed suitable for the handling operation, and the handling operation is performed. A configuration is known in which the drive of the preprocessing unit that is sometimes unnecessary is cut off (see, for example, Patent Document 1).
Japanese Patent Laying-Open No. 2005-2111016 (page 4-5, FIG. 6)

  By the way, when a combine is made to enter a soft field, there is a possibility that the weeding body at the tip of the pretreatment unit may be immersed in the field, and the pretreatment unit is made to enter the field in a state where the pretreatment unit is raised to the vicinity of the highest position. . Then, every time the harvesting operation for one stroke in the field is completed, the turning operation of the machine body is performed in a state where the preprocessing unit is raised to the vicinity of the highest position. In addition, when the heights of the cereals to be planted in the field are all high, a high mowing operation is generally performed by raising the pretreatment unit to an optimum height.

  However, as described above, the pre-processing unit is set to the highest position when hand-harvesting cereals that have been left uncut in various parts of the field or hand-harvested at the four corners of the field. If you try to carry out the handling operation by moving the aircraft to a position where there is a hand-harvested cereal while keeping it raised to the vicinity, it will be superposed from the conveyance end of the pretreatment unit to the conveyance start end of the threshing feed chain The supply guide extended in this manner is moved up integrally with the rise of the pretreatment section, and the threshing feed chain sandwiching the stock side of the hand-held cereal meal by the moved-up supply guide As a result, the substantial opening of the pinch rail becomes narrow, and the scraping action of the hand-held cereal by the threshing feed chain cannot be fully exhibited.

The present invention has been made to solve the above-mentioned problems, and a pretreatment unit is arranged in front of the machine frame, and a threshing unit is arranged behind the fuselage frame. In a combine that drives at a speed that links the speed with the cutting travel speed, the threshing feed chain is driven at a constant speed regardless of the cutting travel speed by operating a hand-operated switch provided on the machine body, and the pre-processing unit is The first feature is that a hand control means for lowering the height is provided.
The second feature is that the alarm is output by operating the hand switch, and then the preprocessing unit is lowered at a low speed.

According to the first aspect of the present invention, at the time of handling operation, it is possible to switch the threshing feed speed of the threshing feed chain to a constant speed suitable for handling operation by operating the handling switch. Since the pretreatment unit can be lowered to a predetermined height just by operating the switch, the cereal grains left uncut in various places on the field are manually cut with the pretreatment unit raised to the vicinity of the highest position. Even when handling cereals that have been harvested or hand-harvested at the four corners of the field, etc., the pre-processing unit is automatically adjusted to a height suitable for the handling operation. Can be lowered. Thereby, the supply guide extended so as to be superposed on the conveyance start end of the threshing feed chain from the conveyance end of the pretreatment unit moves up integrally with the rise of the pretreatment unit, and moves up. The feed guide narrows the substantial opening of the threshing feed chain and the pinching rail that clamps the stock side of the handheld cereal masher, and the threshing feed chain fully It is possible to eliminate problems in the conventional handling operation such that it cannot be displayed.
According to the second aspect of the present invention, an alarm is output by the operation of the hand switch, and then the pre-processing unit is lowered at a low speed so that a worker other than the worker who performs the hand-working operation is pre-processed. It is possible to ensure safety by informing that the part automatically descends.

  Next, embodiments of the present invention will be described with reference to the drawings. 1 and 2 are a side view and a plan view of a combine 1 with a part omitted, and the combine 1 supports a machine frame (running machine stand) 3 with a pair of left and right crawler travel devices 2 and a machine frame. In front of 3, a pre-processing unit 5 that conveys to the threshing unit 4 while cutting the cereals is provided.

  Behind the pre-processing unit 5 are various operations such as a seat 6 on which an operator is seated, a multi-steering lever 7 that is a traveling operation tool, a main transmission lever 8, a mowing and threshing clutch lever 9, and a clutch pedal (not shown). A control unit 11 including tools is disposed, a grain tank 12 is provided on one side of the rear part of the seat 6, and a threshing unit 4 is provided on the other side. The grain that has been subjected to the threshing and sorting process in the threshing unit 4 is temporarily stored in the grain tank 12, and the grain that is temporarily stored in the grain tank 12 is discharged from a grain discharge auger (not shown). Can be discharged outside the machine.

  More specifically, a threshing unit 4 having a threshing feed chain 13 at the rear of the preprocessing unit 5 is supported at the front portion of the machine body frame 3 so that the preprocessing unit 5 can be moved up and down around the rotation fulcrum X. It is installed. The cover body 14 above the threshing feed chain 13 is provided with a momentary handle switch 15 that can be operated by the operator from the side of the machine body. In addition, the multi-steer lever 7 can control the aircraft by tilting left and right, and can move the pre-processing unit 5 up and down by tilting forward and backward. That is, when the multi-steer lever 7 is tilted forward, a pre-processing lowering switch 93, which will be described in detail later, is turned on and the pre-processing unit 5 is lowered, and when the multi-steer lever 7 is tilted backward, the pre-processing up switch 94 is in the on state and the preprocessing unit 5 is raised.

  And the pre-processing part 5 is provided with the weeding body 16 provided in the front-end | tip, the raising apparatus 17 located in the back, the picking-up conveying apparatus 18, the cutting blade 19, the stock former conveying apparatus 21, and the handling depth conveying apparatus 22 grade | etc.,. The handling depth conveying device 22 is supported so as to be swingable up and down around the rotation fulcrum Y at the front end thereof. The preprocessing unit 5 is moved up and down via an actuator (hydraulic cylinder) (not shown). The actuator is contracted when the preprocessing down switch 93 is turned on, and the preprocessing up switch 94 is operated. When is in the entering state, it will extend. Further, as shown in the block diagram of FIG. 7, reference numeral 27 denotes an actuator (electric motor) that swings the handling depth conveying device 12 up and down. Reference numeral 28 denotes preprocessing height detection means (potentiometer) for detecting the elevation height (preprocessing height) of the preprocessing unit 5. It is provided in the vicinity of the rotation fulcrum X.

  Next, the transmission structure of the combine 1 will be described with reference to FIG. The power of the engine 31 is transmitted from an output pulley 33 fixed to the output shaft 32 to an input pulley 36 of a traveling HST 35 that constitutes a main transmission of the transmission 34 via a traveling clutch 37, and the transmission 34. Power transmitted through the auxiliary transmission mechanism 38 and the gear train 39 is transmitted to the drive sprocket 41 of the pair of left and right crawler traveling devices 2.

  Then, the traveling speed of the combine 1 can be steplessly changed by changing the rotation of the driving HST 35 steplessly with the main shift lever 8. Reference numeral 42 in the figure denotes a travel speed detection sensor that detects the rotational speed of the auxiliary transmission shaft 43 as the travel speed of the combine 1. Further, from the output pulley 44 fixed to the output shaft 32 of the engine 31, the power of the engine 31 is belt-transmitted via the threshing clutch 48 to the input pulley 47 fixed to the input shaft 46 of the gear case 45 and input. From the threshing portion input pulley 49 fixed to the shaft 46, power is transmitted to the threshing portion 4 as a belt.

  In addition, the gear case 45 allows the power of the engine 31 input to the input shaft 46 to be continuously variable by the preprocessing HST 51 and then transmitted to the preprocessing unit 6 and the threshing feed chain 13 so that the preprocessing of the gear case 45 can be performed. A preprocessing input pulley 55 is belt-driven from an output pulley 53 fixed to the output shaft 52 via a preprocessing transmission clutch 54. In other words, the pretreatment HST 51 is provided on the transmission upper side of the pretreatment transmission clutch 54, whereby the cereal conveyance speed of the pretreatment unit 5 and the threshing feed chain 13 can be arbitrarily changed.

  The output shaft 56 of the gear case 45 is connected to a threshing feed chain drive shaft 57 extended toward the threshing feed chain 13, and the threshing feed chain drive shaft 57 is threshed above the body frame 3. The threshing feed chain 13 can be driven via a drive sprocket 58 provided at the front end of the machine body 4 so as to be provided in front of the section 4 and reach the left end of the machine body.

  Reference numeral 61 denotes a preprocessing rotation sensor that detects the rotational speed of the preprocessing output shaft 52 in the gear case 45, and reference numeral 62 operates the trunnion shaft to change the rotational speed of the preprocessing HST 51 steplessly. Based on the detection value of the traveling speed detection sensor 42 input to the microcomputer 91 shown in FIG. 7, the electric motor 62 is operated to change the swash plate angle of the preprocessing HST 51 to detect the traveling speed. The rotational speed of the preprocessing HST 51 is controlled in association with the rotational speed of the auxiliary transmission shaft 43 of the transmission 34 detected by the sensor 42.

  That is, in the linkage control described above, as indicated by a solid line (A) in FIG. 4, the drive of the pretreatment unit 5 and the threshing feed chain 13 is stopped when the combine 1 is stopped and reversely moved. As the traveling speed increases in proportion to the traveling speed, adjustment and control can be performed so that the driving speeds (the cereal conveyance speed) of the preprocessing unit 5 and the threshing feed chain 15 are increased.

  Further, as shown in FIG. 5, the pretreatment transmission clutch 54 is a belt tension type clutch mechanism, and a transmission belt wound around an output pulley 53 fixed to the pretreatment output shaft 52 and a pretreatment input pulley 55. A tension pulley 72 for tightening and loosening 71 is provided, and the tension pulley 72 is switched between the tension position and the relaxation position of the transmission belt 71 via the sector gear 74, the link 75, the wire 76, and the like by forward and reverse rotation of the electric motor 73. The pre-processing transmission clutch 54 can be turned on and off by being moved. Reference numerals 77 and 78 are limit switches for stopping the forward or reverse driving of the electric motor 73, and reference numeral 79 is a return spring of the tension pulley 72 in the clutch disengagement direction. The threshing clutch 48 also employs a belt tension type clutch mechanism similar to the above-described pretreatment transmission clutch 54.

  On the other hand, as shown in FIG. 6, a cam body 81 is integrally provided at the base of the mowing and threshing clutch lever 9. In the vicinity of the cam body 81, a cutting clutch switch 82 that turns on the electric motor 73 in the engaged state and engages and operates the preprocessing transmission clutch 54, and a threshing clutch switch that activates the threshing clutch 48 in the engaged state. 83, the first cam portion 81a of the cam body 81 is connected to the threshing clutch switch 83 at the position where the mowing and threshing clutch lever 9 is tilted forward about the rotation fulcrum Z, and the second cam portion 81b comes into contact with the cutting clutch switch 82 and both switches 82 and 83 are turned on, and the threshing unit 4 and the preprocessing unit 5 are both driven.

  Further, when the mowing and threshing clutch lever 9 is operated to the position indicated by the phantom line, the contact between the first cam portion 81a of the cam body 81 and the threshing clutch switch 83 is maintained, and the threshing portion 4 is driven. 2 When the cam portion 81b is detached from the cutting clutch switch 82 and the cutting clutch switch 82 is turned off, the driving of the preprocessing unit 5 is stopped, and further, when the cutting and threshing clutch lever 9 is operated to the (ku) position indicated by a virtual line. Both the cam portions 81a and 81b are separated from both the switches 82 and 83, and both the switches 82 and 83 are turned off, so that the driving of the threshing portion 4 and the pretreatment portion 5 is stopped.

  Further, the combine 1 includes a control unit (control unit) 92 configured using a microcomputer (including a CPU, a ROM, a RAM, and the like) 91 as shown in the block diagram of FIG. On the input side, the handling switch 15, the reaping clutch switch 82, the threshing clutch switch 83, the limit switches 77 and 78, the preprocessing down switch 93, the preprocessing up switch 94, the preprocessing height detection means 28, the front The processing rotation sensor 61 and the traveling speed detection sensor 42 are connected via a predetermined input interface circuit. On the output side of the control means 92, an electric motor 62 (pre-processing HST 51) and an electric motor 73 (tension pulley 72) are connected. Electromagnetic solenoid built into the direction switching valve of the actuator (hydraulic cylinder) that moves the pre-processing unit 5 up and down Maytansinoid valve 26 connects the actuator to vertically swing the 扱深 feeder 12 (electric motor) 27, and the horn 95 through a predetermined output interface circuit.

  Next, the handling control by the control means 92 mentioned above is demonstrated based on the main flowchart shown in FIG.

  First, in step S1, it is determined whether the hand-operated switch 15 is in the on (ON) state or the off (OFF) state. If it is in the on state, the process proceeds to step S2, and if it is in the off state, returns to the original state. .

  In step S2, for example, when an uncut grain culm is positioned on the left side and the counterclockwise mowing operation is performed, the pre-processing unit 5 is slid to the left outer side of the machine body, and the uncut cereal and left crawler travel device If it is a combine 1 that can prevent the mud slag from being pushed down by the mud pushed out by the crawler travel device 2 on the left side, or the mud from adhering to the uncut cereal slag, In this way, if the pre-processing unit 5 is slid in the left outer direction of the machine body, it is not possible to secure a sufficient work space for the foot that is convenient for the operator performing the handling operation. Control for sliding the pre-processing unit 5 to the right is executed to proceed to step S3.

  In step S3, as in step S2, in order to secure a work space at the feet of the worker performing the handling operation, it is regulated that the uncut grain culm on the uncut ground side of the preprocessing unit 5 falls to the machine body side. The narrow guide 101 to be stored is controlled from the state shown by the solid line in FIG. 2 to the state shown by the two-dot chain line, and the process proceeds to step S4.

  In step S4, when the handling work unit is at a high position, such as a large combine, for example, a pair of left and right is set so that the operator can easily perform the handling work by lowering the handling work unit. By controlling the crawler traveling device 2 to move up and down, tilt control is performed to lower the left side of the machine body, and the process proceeds to step S5. In order to execute the above-described controls in steps S2 to S4, detection means such as a limit switch and an inclination sensor for detecting the left and right slide position of the preprocessing unit 5, the attitude of the narrow guide 101, the right and left inclination of the machine body, and the like. Needless to say, an actuator for operation corresponding to each control is required.

  In step S5, after executing the pre-processing unit lowering control of the present invention, the process proceeds to step S6. FIG. 9 is a flowchart showing the pre-processing unit lowering control, which will be described below based on this flowchart.

  First, in step S5 (1), it is determined whether the pre-processing transmission clutch 54 is in the engaged state or the disconnected state. If it is in the engaged state, the process proceeds to step S5 (2).

  In step S5 (2), it is determined whether or not the hand switch 15 has been switched from the OFF (OFF) state to the ON (ON) state. If the hand switch 15 has been switched from the OFF state to the ON state, the process proceeds to step S5 (3). Otherwise, the process proceeds to step S5 (6).

  In step S5 (3), it is determined whether or not the handling mode flag is OFF or ON. If OFF, the process proceeds to step S5 (4), and if ON, the process proceeds to step S5 (5).

  In step S5 (4), the handling mode flag is set to ON and the process proceeds to step S5 (6). On the other hand, in step S5 (5), the handling mode flag is turned OFF and the process proceeds to step S5 (6).

  In step S5 (6), it is determined whether the handling mode flag is ON or OFF. If it is ON, the process proceeds to step S5 (7), and if it is OFF, the process proceeds to step S5 (8).

  In step S5 (7), the pre-processing transmission clutch 54 is turned off (OFF), and the process proceeds to step S5 (9). On the other hand, in step S5 (8), the pre-processing transmission clutch 54 is turned on (ON) to proceed to step S5 (10). In this step S5 (10), vehicle speed interlocking control of the threshing feed chain 13 is executed to Return to.

  Moreover, in step S5 (9), the threshing feed chain 13 is set to the hand (work) speed, and the process proceeds to step S5 (11).

  In step S5 (11), the height of the pre-processing unit 5 is detected by the pre-processing height detection means (potentiometer) 28, and if the pre-processing unit 5 is equal to or greater than a predetermined (height) position, step S5 (12). If it is below a predetermined (height) position, it will progress to step S5 (13), will stop raising / lowering of the pre-processing part 5, and will return.

  In step S5 (12), the pre-processing unit 5 is lowered at low speed and the process proceeds to step S5 (14). In this step S5 (14), the alarm output by the horn 95 is executed only when the pre-processing unit 5 starts low-speed descent. Return to the original.

  The combine 1 that executes the above-described preprocessing unit lowering control links the cereal conveyance speed of the preprocessing unit 5 and the threshing feed chain 13 to the cutting travel speed, and operates the hand switch 15 provided on the body. Thus, there is provided a handling control means 92 for driving the threshing feed chain 13 at a constant speed regardless of the cutting traveling speed, disengaging the preprocessing transmission clutch 54 and then lowering the preprocessing section 5 to a predetermined height. Therefore, during the handling operation, the handling speed of the threshing feed chain 13 of the threshing feed chain 13 can be switched to a constant speed suitable for the handling operation by operating the handling switch 15, and the handling switch 15 is turned on. By simply operating, it is possible to turn off the driving of the preprocessing unit 5 that is unnecessary during the handling operation, and then lower the preprocessing unit 5 to a predetermined height.

  Therefore, the pre-processing unit 5 is raised to the vicinity of the highest position, and the cereals that are left uncut at various points in the field are hand-cut, or the cereals that are hand-cut at the four corners of the field are handled. Even when the work is performed, the pre-processing unit 5 can be automatically lowered to a height suitable for the handling operation by operating the hand-handling switch 15. The feed guide 102 (see FIG. 1 and FIG. 2) extended so as to be superposed on the feed start end of the threshing feed chain 13 from the feed end of the feed moves upward as the pretreatment unit 5 rises. By the supply guide 102 moved up, the threshing feed chain 13 and the pinch rail 103 for holding the stocker side of the hand-held cereal are narrowed, and the threshing feed chain 13 is used for handling. Fully demonstrate the stir action of cereals It is possible to solve the problems in the conventional rowing work such as Rukoto becomes impossible. Further, the alarm signal is output from the horn 95 by operating the handle switch 15 and then the pre-processing unit 5 is lowered at a low speed, so that the pre-processing unit 5 is automatically lowered by the operator other than the operator who performs the handling operation. You can be sure that you are safe.

  In order to further improve the workability of the harvesting work by the combine 1, the state before the pre-processing unit 5 is lowered at a low speed when the hand-handling switch 15 is operated again after the hand-handling work described above is finished. That is, the pretreatment unit 5 is raised to the original height, and the pretreatment transmission clutch 54 is turned on so that the threshing feed speed of the threshing feed chain 13 is returned to the state linked with the cutting travel speed. What is necessary is just to comprise control.

  Next, step S6 and subsequent steps of the handling control (see the main flowchart in FIG. 8) for which the description has been interrupted will be described. In step S6, when the handling switch 15 is in the ON state in step S1, the lowering control of the handling depth conveying device 22 is executed, and the process proceeds to step S7. The lowering control of the depth handling device 22 is performed by retracting the conveyance end portion of the depth handling device 22 from the conveyance start end portion of the threshing feed chain 13, so that the work space near the hand of the operator who performs the handling operation Is to secure.

  In step S7, the pre-processing transmission clutch 54 is turned off (OFF), and the process proceeds to step S8. In step S8, the threshing feed chain 13 is set to the hand (working) speed and returned to the original state. It is supposed to run. In addition, although the detailed control form is abbreviate | omitted about each control of step S2-S4 and step S6 mentioned above, these control forms are the pre-processing part fall control of step S5 (refer the flowchart shown in FIG. 9). ).

The partially omitted side view of the combine. The partially omitted plan view of the combine. Combined transmission diagram. A graph showing the relationship between the running speed and the driving speed of the pretreatment unit and the threshing feed chain. The principal part block diagram of a pre-processing transmission clutch. The enlarged view of a mowing threshing clutch lever. The block diagram of a control part. The main flowchart which shows hand handling control. The flowchart which shows pre-processing part fall control.

Explanation of symbols

3 Machine frame 4 Threshing unit 5 Pre-processing unit 13 Threshing feed chain 15 Hand switch 92 Hand control

Claims (2)

  A pre-processing unit (5) is arranged in front of the machine body frame (3), and a threshing unit (4) is arranged behind the machine frame (3), and the cereal conveyance speed of the pre-processing unit (5) and the threshing feed chain (13) is cut and traveled. In a combine that is driven to change speed in conjunction with speed, the threshing feed chain (13) is driven at a constant speed regardless of the cutting and traveling speed by operating a hand-operated switch (15) provided on the machine body, and a preprocessing section (5 ) Is provided with a hand control means (92) for lowering the head to a predetermined height.   The combine handling device according to claim 1, wherein the preprocessing unit (5) is lowered at a low speed after an alarm is output by an operation of the handling switch (15).

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