JP2900028B2 - Harvester harvester - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a harvester such as a combine harvester for continuously harvesting grain culms. [0002] Conventionally, Japanese Utility Model Laid-Open No. 555-1
04031 No. as shown in JP, performs mowing height automatic control of the reaper, there is a technique to increase the reaper by operating the lifts switch. The prior art, to the non-cutting working height of the higher position than cutting height automatically controlled height, to raise the reaper by the lift switch is a necessary operation to stop the cutting height automatic control, according to create skilled There is a problem that it is not easy to simplify the direction changing operation and prevent the operation from being forgotten. Further, as shown in Japanese Patent Publication No. Sho 59-16726, providing a lifting switch lifting of <br/> to the mowing height preparative portion set by the operator, the increase switch or switches for which it is raised only reaper set time of the timer There is technology. The prior art raises the reaper switching the up switch before towards direction conversion in 圃 field pillow areas, Luca et lowers the cutting preparative portion switches the lift switch after turning, before and after turning It is necessary to switch two different switches depending on
There is a problem that it is not easy to obtain a switching structure between the switch control and the automatic cutting height control, and it is not easy to improve the operability and to simplify the control mode switching structure. Especially,
When the mowing part is automatically lowered, the cutting height automatically
Turn on the cutting clutch and drive the cutting section again before descending
It is desirable to resume the work by
In the structure where the clutch is manually engaged, the clutch
It is easy to perform an erroneous operation that forgets or mistakes the timing of the on-operation.
There's a problem. According to the present invention, there is provided a sensor for detecting a cutting height of a grain culm of a cutting section, and an elevating member for raising and lowering the cutting section. Harvesting device of a harvester, which is provided with a lift switch for raising and lowering a cutting unit, and a clutch member for operating a cutting clutch for transmitting a driving force to the cutting unit. A controller that automatically performs an operation of automatically raising the cutting unit to a non-cutting work height by an one-touch operation of a lift switch, and an operation of lowering the cutting unit to the cutting height automatic control height. Automatic lifting control and automatic lowering control of the reaper in the automatic control of the lift switch one-touch operation are omitted.
Same was done on the basis of the height reference value, also arrives the cutting height automatically controlled height after automatically enter the reaper clutch when part reaping by the lift switch automatic control is lowered
Which was constructed such that reached down, or increase the reaper before direction conversion towards at 圃 field pillow areas in the non-cutting working height, the cutting height automatically controlled height after turning <br/> an operation of, the only one-touch operation of the lift switch line fail, but to simplify the turning operation carried out temporarily pause the cutting height automatically controlled with obtaining easily performed, before Symbol of reaper by the lift switch operation since increase control and Ru was performed based downregulate the substantially same reference value, obtained easily initialize a switching reference of the automatic control mode for performing cutting height control of increasing control and lowering control and the sensor of the lift switch, since reaper by the lift switch automatically controlled et al of the Ru to reach cutting height automatically controlled height after the input clutch reaper when lowered, when turning in the field pillow areas, enter the reaper clutch To
There is no need to perform a manual operation to give lowers the cutting <br/> preparative work position after re driving the reaper, the reaper clutch forgot also
Can prevent the erroneous operation and smoothly start the next harvesting operation. Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a block diagram, FIG. 2 is an overall side view of the combine, and FIG. 3 is a plan view of the combine, where (1) is a track frame on which traveling crawlers (2) are mounted on the left and right,
(3) is a machine base fixedly supported on the track frame (1), (4) is mounted on the machine base (3), and a feed chain (5) is stretched on the left side to incorporate a handling cylinder (6). The threshing unit (7) is mounted so as to be able to ascend and descend in front of the threshing unit (4) via an elevating cylinder (8), and is provided with a grain stalk raising device (9), a cutting blade (10) and grain stalk transport A cutting section provided with a mechanism (11), a cutting section (12) provided on the rear side of the threshing section (4) and facing the end of a straw chain (13) connected to the feed chain (5); 14) is a paddy tank for storing grains taken out from the threshing unit (4) through the fryer cylinder (15), (16) is a driver's seat on which an operator sits,
(17) is a driving operation unit provided in front of and on the left side of the driver's seat (16), and (18) is an engine unit that drives each unit of the combine, which is configured to continuously perform harvesting and threshing work. A left and right side clutch lever (19)
(19) A traveling main speed change lever (20), a traveling auxiliary speed change lever (21), a threshing / rearing clutch lever (22), and a harvesting raising / lowering operating lever (23) are arranged on the driving operation part (17). An ultrasonic cutting height sensor (24), which is a non-contact sensor for detecting the height of the cutting unit (7) above the ground, is provided below the cutting unit (7). Further, as shown in FIG. 1, the tip of a piston rod (8a) of an elevating cylinder (8) attached to a machine base (3) is connected to a cutting part (7) and the cylinder (8)
Is connected to a hydraulic pump (26) via a three-port three-position switching type electromagnetic switching valve (25). A cutting clutch on / off member for inputting the driving force from the engine section (18) to the cutting section (7) via a cutting clutch (27) and automatically operating the clutch (27). Reaping clutch motor (2
8) is provided. When the motor (28) is driven forward ("on" drive), the shift (29) screwed to the motor screw shaft (28a) is moved to the right until the input side limit switch (30) is turned off. Then, the movable clutch pawl (27a) is engaged with the fixed clutch pawl (27b). When the motor (28) is driven in reverse rotation ("disengage" drive), the shift (29) is moved to the left until the off limit switch (31) is turned off, and each clutch pawl (27a) (27b) is moved. Release the mesh. The following are connected to the input ports of the control section (32) composed of a microprocessor or the like. 1. A threshing switch (33) for detecting a threshing clutch engagement operation of the threshing / rearing clutch lever (22). 2. A harvesting switch (34) for detecting an operation of engaging the harvesting clutch (27) of the threshing / rearing clutch lever (22). 3. A cutting height automatic switch (35) for selecting whether or not to perform cutting height automatic control. 4. A cutting clutch automatic switch (36) for selecting whether or not to link the cutting clutch (27). 5. A lift switch (37) provided on the traveling main speed change lever (20) for raising the mowing part (7) to the turning height with one touch, for example, during turning. 6. A back switch (38) for detecting a reverse shift operation of the traveling main transmission lever (20). 7. Cutting height sensor (24). 8. Limit switches (30) and (31) for the on and off sides of the reaping clutch motor (28). The following are connected to the output port of the control unit (32). 9. Ascending and descending solenoids (2) of the electromagnetic switching valve (25)
5a) (25b). 10, reaping clutch motor (28). 11. Cutting height automatic ramp (39). 12. A reaping clutch lamp (40) for displaying the interlocking state of the reaping clutch (27). The selection of the on / off state of the reaping clutch (27) can be made by the operation lever (22) as in the prior art, or by the operation of the motor (28) described above, even if the lever (22) is in the on state. Is cut off. Note that the relationship between set values H1 to H6 described later is a relationship of H1 <H2 <H3 <H4 <H5 <H6. The first set value (H1) is a dead zone lower limit position of the cutting height sensor (24). The second set value (H2) is a dead zone upper limit position of the sensor (24). The third set value (H3) is the on-drive upper limit position of the mowing clutch motor (28). The fourth set value (H4) is the lower limit driving position for turning off the motor (28). The fifth set value (H5) is the upper judgment position of the lift switch (37). The sixth set value (H6) is set at the lower judgment position of the lift switch (37). This embodiment is configured as described above.
The operation will be described below with reference to the flowcharts of FIGS. Each flag has the following meaning. The S flag is for determining whether or not to perform the cutting height automatic control.
"1" prohibits control (manual holding), "0" releases control prohibition. The up flag is used to determine whether or not the mowing unit (7) is to be lifted.
5a) ON, ascending solenoid (25a) OFF at "0".
The down flag is used to determine whether or not the lowering of the mowing unit (7) is performed.
b) ON, descending solenoid (25b) OFF at "0". The automatic lamp flag is used to determine whether the automatic cutting height control is activated or stopped. When "1", the automatic cutting height lamp (39) is turned on, and when "0", the lamp (39) is turned off. The lift flag is for determining whether or not the raising operation of the reaper is necessary.
When the lift switch (37) is turned on at "1", the ascent is continued, and at "0", the ascent is stopped. First, in steps 1 and 2, the above-described flags are initialized. Next, the process branches to a manual mode or an automatic mode depending on whether the mowing elevating operation lever (23) is operated (step 3). [Manual Mode] When the mowing elevating operation lever (23) is operated, the S flag, which is a manual holding flag, is set to 1 (step 4), and the cutting is performed in the direction in which the operation lever (23) is operated. Set the flag or up flag to 1 (steps 5, 6,
7). Thereafter, the routine jumps to the actuator operation block of step 33 and thereafter, where if the up flag is 1, the ascending solenoid (25a) is turned on, and if the down flag is 1, the descending solenoid (25b) is turned on. (Step 3
3, 34, 35, 36). (That is, the up flag is set to 1
It is synonymous with issuing an ascending command, and setting the down flag to 1 should be considered as issuing a descending command. Returning to step 3 again, even if the mowing elevating operation lever (23) is not operated at this time, S
Since the flag is 1, the process proceeds to step 15 in step 14 (steps 29, 30, 31, 32).
Does not shift to the automatic control mode, and the manual holding state is maintained. [Automatic Mode] In step 3, when the cutting / raising / lowering operating lever (23) is not operated, if the S flag is 0 and the following conditions are not satisfied, the automatic cutting height control in steps 29 to 32 is performed. Transition to mode. 1. Threshing switch (33) on (threshing clutch on) (determined in step 8) 2, Cutting height automatic switch (35) on (determined in step 11) 3, mowing switch (34) on (reaching clutch on) (Determined in step 13) 4, the touch operation of the lift switch (37) is not performed (determined in step 15)... 5 described later, the back switch (38) is turned off (determined in step 28). In step 1, the S flag is set to 1 at initialization. It is in step 12 that the S flag is set to 0. To set the S flag to 0, from among the above conditions of automatic control,
It is necessary to be in a state once. The reason for this configuration is as follows. The cutting height automatic switch (3
For example, when 5) is turned on, there is a danger that the automatic cutting height control is started without the prediction of the operator. Therefore, until the cutting operation of the cutting clutch (27) is performed once, and the cutting height automatic switch (35) is turned off, the S flag is set to 1 and the manual holding is continued. The reason why the S flag is set to 1 when the threshing clutch is disengaged (step 9) is that starting the automatic cutting height control as soon as the threshing clutch is engaged is unnatural as a work. After setting and resetting these S flags,
At step 10, the lift flag is set to 0.
(The lift flag will be described later in detail.) The automatic cutting height control in steps 29 and 31 will be described. If the height (h) of the cutting unit (7) detected by the cutting height sensor (24) is lower than (H1), the up flag is set to 1 (a rising command is issued) (step 29,
30) If the height (h) of the cutting unit (7) detected by the cutting height sensor (24) is higher than (H2), the down flag is set to 1 (a lowering command is issued) (steps 31, 3).
2). Then, it is determined in steps 33 and 35 of FIG. 6 that the process proceeds to steps 34 and 36, and the cutting height automatic control is performed. [Lift Switch] In steps 15 and 24, it is determined whether or not the lift switch (37) has been touched, and the control is branched. If the lift switch (37) is touched (steps 20 and 25), the next operation is performed. If the height (h) of the cutting unit (7) is lower than (H5), the up flag is set to 1 (step 21). If the height (h) of the cutting unit (7) is higher than (H5), the down flag is set. When the lift is started by the lift switch (37), the lift is increased to the height (H6).
At the same time as setting the up flag to 1, both the S flag and the lift flag are set to 1. Therefore, when the ascent is started by the lift switch (37), the S flag becomes 1, so that the routine always branches to step 15 in step 14 and always shifts to step 17 in step 16. The height of the reaper (7) determined in step 17 is (H
6) Until the above, the lift flag is not reset and the ascent is continued. (Steps 18 and 19) On the other hand, the down flag is set to 1 in Steps 22 and 26 by operating the lift switch (37), and the process shifts to Step 36 in Step 35 to lower the cutting unit (7). In step 31, the cutting unit (7) is lowered until the height (h) of the cutting unit (7) becomes lower than (H2). [Back Switch] In step 28, it is determined whether or not the back switch (38) is turned on. This switch (3
8) is a switch that is turned on when the shift is set to reverse as described above. Mowing unit (7) when moving the aircraft backward
Is provided to raise That is, if the back switch (38) is turned on, the lift flag is set to 1, the up flag is set to 1, and the S flag is set to 1 (step 27), as described above, and the mowing unit (7) becomes higher than the height of (H6). It is raised to. [Automatic Ramp] In step 14, it is determined whether the S flag is 1 or 0. When the S flag is 0, the automatic ramp flag is set to 1 (step 23). Whether the automatic cutting height lamp (39) is turned on is determined based on whether the automatic lamp flag is 1 or not. (Steps 38, 39, 40) The control (cutting clutch (27) automatic off control) corresponding to the gist of the present invention will be described. In steps 41, 42 and 43, the automatic reaping clutch (27)
It is determined whether to perform the on / off control. The automatic reaping clutch (27) on / off control is performed when the following conditions are met. 1. Threshing switch (33) on (step 41) 2, Cutting switch (34) on (step 42) 3, Automatic cutting height switch (35) on (step 43) If these conditions are lacking, automatic cutting clutch (27) The on / off control is stopped. [Cuting clutch on / off automatic control stop] In step 44, the cutting clutch automatic ramp (40)
After turning off the motor, the motor (28) is turned on so that the reaping clutch (27) is engaged (until the limit switch (30) is turned off).
Drive control. (Steps 45 to 49) That is, when the on / off control is not performed, there is always no conflict between the manual operation of the cutting clutch lever (22) and the continuation of the cutting clutch (27). [Automatic control of cutting clutch on / off] In step 50, a cutting clutch automatic ramp (40)
Turn on. (Moving clutch automatic on) In step 51, the height (h) of the mowing part (7) becomes (H)
5) The motor (2
8) An on-drive (clutch on-side operation) is performed. (Steps 51, 52, 53, 54, 55) As described above, “down flag is 1” indicates that the mowing unit (7) is being driven downward. That is, the cutting clutch (27) is turned on only when the cutting value of the cutting height sensor (24) is lower than the set value (H5) and the cutting unit (7) is driven downward. (Automatic Release of Cutting Clutch) After step 56, the height (h) of the cutting section (7)
(H6) or more and the up flag is 1, the motor (28) off-side operation is performed. (Steps 56, 57, 5
8, 59, 60), ie, when the cutting clutch (27) is turned off, the detection value of the cutting height sensor (24) is set to the set value (H6).
As described above, it is only when the mowing part (7) is driven upward.
In the process, if the motor (28) has already been moved to the side to be operated, the motor is not started from the beginning. (Steps 53 and 58) In steps 61, 62, 63 and 64, the on / off limit switches (30) (3)
When 1) is turned on, the operation of the motor (28) is stopped to prevent the motor (28) from burning. Therefore, the threshing / rearing clutch lever (2)
2) The threshing unit (4) and the cutting unit (7) are driven by operation, and the cutting height of the cutting unit (7) is set to a substantially constant height, that is, the first setting by turning on the cutting height automatic switch (38). Value (H1)
In order to maintain the value between the first set value (H2) and the second set value (H2), the mowing unit (7) is driven to rise when it is lower than the first set value (H1). 7) is driven downward. Further, the control of the controller (32), which is a controller, is performed by the lift switch (37) by giving priority to the raising and lowering operation of the cutting unit (7) by the operator. When the operator determines that the operation is inconvenient, the operator switches to an appropriate operation, whereby the operation based on the operation of the lift switch (37) is released, and the reaper (7) can be supported in a state desired by the operator, and
The set value (H5) of the upper limit height at which the cutting unit (7) is raised by the automatic control of the control unit (32) is substantially equal to the set value (H5) of the lower limit height at which the cutting unit (7) is lowered. Let
The lift switch (37) is operated so that the raising control and the lowering control of the cutting unit (7) are performed based on substantially the same set value (H5). As is apparent from the above description, the sensor (24) for detecting the cutting height of the grain stalk of the cutting unit (7) and the lifting cylinder (8) serving as a lifting member for raising and lowering the cutting unit (7).
And a lift switch (37) for raising and lowering the cutting unit (7) is provided while performing automatic cutting height control for automatically adjusting the cutting height of the grain culm of the cutting unit (7). 7) A reaping clutch motor (2) which is a clutch member for performing an on / off operation of a reaping clutch (27) for transmitting driving force to the
8) In the reaper of the harvester provided with 8), the one-touch operation of the lift switch (37) automatically raises the reaping part (7) to the non-reaping work height (H6), and the reaping part (7) is reaped. Control unit (3) which is a controller that automatically performs an operation of lowering the height to the height (H2).
2), and the lift switch (3) of the control unit (32) is provided.
7) The reaper (7) automatic raising control and the reaper (7) automatic lowering control in the one-touch operation automatic control are performed based on the substantially same height reference value (H5), and the reaping is performed by the lift switch (37) automatic control. part (7) is allowed to reach cutting height automatically controlled height after automatically enter the reaper clutch (27) when lowered (H2). And,
Under the mowing height automatic control height reaper before direction conversion towards at 圃 field pillow areas (7) after turning or raised to the non-cutting working height
An operation for descending, the are performed by the only one-touch operation of the lift switch (37), together with enabling a simplification of the turning operation carried out temporarily pause the mowing height automatic control, before Symbol lift switch (37) Operation To perform the raising control and the lowering control of the reaper (7) based on the substantially same reference value (H5),
The increase control and lowering control and switching standards of the automatic control mode for performing cutting height control of the sensor (24) can be easily initialized, the lift switch (37) to al the automatic control of the lift switch (37) reaper (7) to reach the cutting height automatically controlled height (H2) after the input clutch (27) cutting when lowered, when turning in the field pillow areas, reaper clutch (27) Perform a manual operation to turn on
It is not necessary, is lowered to the reaper (7) is driven again after the cutting work position, forgot reaper clutch (27) or Ayamamisao
The cropping work in the next process is started smoothly by preventing cropping. When the automatic cutting clutch switch (38) is turned on during the automatic cutting height control, for example, at the time of turning on a ridge, a cutting operation is performed by touch operation of the lift switch (40). (7) is raised and supported at the turning height (sixth set value (H6)), and the cutting clutch motor (29) is driven "off" to automatically stop the driving of the cutting unit (7), Cutting part after turning (7)
Is lowered to the cutting height control range again (the third set value (H3) or less), the clutch motor (29) is turned on.
The mowing unit (7) is driven to resume driving. As is clear from the above embodiment, the present invention provides a sensor (2) for detecting the cutting height of the cereal stalk of the cutting section (7).
4) and an elevating member (8) for raising and lowering the cutting unit (7) are provided. The cutting unit (7) performs a cutting height automatic control for automatically adjusting the cutting height of the grain culm. A lift switch (37) for raising and lowering the 7) is provided.
In a reaping device of a harvester provided with a clutch member (28) for engaging and disengaging a reaping clutch (27) for transmitting a driving force to the reaping unit (7) by a one-touch operation of a lift switch (37), a non-rearing operation height ( And a controller (32) for automatically performing an operation of automatically raising the cutting unit (7) to the cutting height (H2) and an operation of automatically lowering the cutting unit (7) to the cutting height (H2). The lift switch (37) and the cutting unit (7) automatic raising control and the cutting unit (7) automatic lowering control in the one-touch operation automatic control are omitted.
Based on the same height reference value (H5) , the cutting switch (37) is automatically turned on when the cutting unit (7) is lowered by the automatic control of the lift switch (37).
To automatically reach the cutting height (H2) after cutting
Which was constructed, the descender reaper after turning or raised portion reaper before direction conversion towards at 圃 field pillow areas (7) in the non-cutting working height (7) in Karidaka of automatic control Height Operation
Since carried out in only one-touch operation of the lift switch (37), it is possible to simplify the turning operation carried out temporarily pause the cutting height automatically controlled easily, before <br/> Symbol lift switch (37) cutting of from causes based reaper by operating the increase control and falling control (7) to substantially the same reference value (H5), said the increase control and lowering control of the lift switch (37) sensor (24) easily initialize a switching reference of the automatic control mode, reaper by the lift switch (37) automatically controlled et be unit for performing height control (7)
The cutting height automatically reaches the control height (H2) after the cutting clutch (27) is turned on when the descent is lowered, so that the turning clutch (27) is turned on when turning in the field headland.
There is no need to perform a manual operation, it is possible to lower the <br/> reaper working position after re-driving reaper (7), reaper clutch
It is possible to prevent the forgetting of the insertion of (27) or an erroneous operation and to smoothly start the harvesting work in the next process.

[Brief description of the drawings] FIG. 1 is a block diagram. FIG. 2 is an overall side view of the combine. FIG. 3 is a plan view of the same. FIG. 4 is a flowchart. FIG. 5 is a flowchart. FIG. 6 is a flowchart. FIG. 7 is a flowchart. FIG. 8 is a flowchart. [Explanation of symbols] (7) Harvester (8) Lifting cylinder (lifting member) (24) Cutting height sensor (27) Cutting clutch (28) Cutting clutch motor (clutch member) (32) Control unit (controller) (37) Lift switch

──────────────────────────────────────────────────続 き Continuation of the front page (56) References JP-A-60-188009 (JP, A) JP-A-61-216610 (JP, A) JP-A-62-111016 (JP, A) JP-A Sho 62- 289105 (JP, A) JP 59-16726 (JP, B2) (58) Fields investigated (Int. Cl. ⁶ , DB name) A01B 63/00 A01D 34/24-34/28

Claims (1)

(57) [Claims] A sensor (2) for detecting the cutting height of the grain stalk of the cutting section (7)
4) and an elevating member (8) for raising and lowering the cutting unit (7) are provided. The cutting unit (7) performs a cutting height automatic control for automatically adjusting the cutting height of the grain culm. A lift switch (37) for raising and lowering the 7) is provided.
In a reaping device of a harvester provided with a clutch member (28) for engaging and disengaging a reaping clutch (27) for transmitting a driving force to the reaping unit (7) by a one-touch operation of a lift switch (37), a non-rearing operation height ( And a controller (32) for automatically performing an operation of automatically raising the cutting unit (7) to the cutting height (H2) and an operation of automatically lowering the cutting unit (7) to the cutting height (H2). lift switch (37) section cutting the one-touch operation automatic control (7) automatic increase control and cutting preparative section (7) substantially the auto down control
Based on the same height reference value (H5), the cutting switch (37) is automatically turned on when the cutting unit (7) is lowered by the automatic control of the lift switch (37).
To automatically reach the cutting height (H2) after cutting
Harvester cutting apparatus characterized by being configured to.