JP2003116312A - Reaping section lift system for combine harvester - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a reaping section lift system for combine harvester enabling the reaping section to be put to lift control manipulation by stopping lifting it by a simple operation during its lifting action by autolifting function. SOLUTION: This reaping section lift system includes a reaping section C, a lift operating gear 43, operation transducing means 13 and 14 for the lift operating gear 43, a stalk detective means 51, and an automatic lift instruction means 52, or the like and also includes a forced outage instruction means 53 functioning to halt an automatic lift instruction on receiving the operation signals from the means 13 and 14 during lifting the reaping section c by the automatic lift instruction by the means 52.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a combine harvester raising / lowering device, and more particularly, when the harvester is moving upward by an automatic lift function, the raising of the harvester is stopped by a simple operation, and then the height of the combine is raised. The present invention relates to a combine harvester lifting / lowering device that can adjust the position in a vertical direction.

[0002]

2. Description of the Related Art There is known a combine for threshing and threshing, which has a cutting unit for cutting grain culms at the end of a machine body and is suspended and supported by a running crawler or the like. The harvesting device for this harvesting combine is composed of a harvesting section, a lifting operation tool, and a lifting instruction means. The reaper is configured to be movable up and down, and is lowered during the reaping work and raised after the reaping work to avoid contact with the ground. The raising / lowering operation tool is a means for inputting a raising / lowering operation of the mowing unit, and has a lever shape that can be tilted back and forth. The forward tilt operation corresponds to the descending operation command, and the backward tilt operation corresponds to the ascending operation command. The up-and-down instruction means is a control device including a logical operation processing section that generates and outputs an up-and-down drive instruction for the mowing section based on an operation signal from the operation of the up-and-down operation tool.

When the operator tilts the raising / lowering operation tool in order to input the raising or lowering operation of the reaping unit, the logical operation processing unit outputs a raising / lowering drive command corresponding to the operation. In the harvesting work of the grain stalk, the raising / lowering operation tool lowers the slicing portion to the vicinity of the root of the grain stalk, and then moves the body while operating the harvesting portion.

In the general mowing work of grain culms, when the cutting of one stroke is completed along a straight cutting line, the turning operation of changing the direction of the machine is required to move to the next cutting stroke. . When turning this aircraft, do not touch the grain culms before mowing in a limited narrow area such as headland in a field with soft ground, and mow the ground side protruding parts such as ridges. In order to prevent the parts from contacting each other, it is necessary to raise the reaping part prior to turning the machine body and then carefully turn the machine body while adjusting the balance and the like of the machine body.

Usually, the turning process of the machine body and the cutting process of the grain culm are alternately repeated. Therefore, every time the machine body is turned, an operation of raising the cutting unit is required together with the turning operation of the machine body, which is often requested by the operator. Will be burdened with.

In order to reduce the burden on the operator,
Some reaping devices have an automatic lift function. This automatic lift function is to automatically drive the cutting unit upward by a signal from a grain culm sensor which is a grain culm detecting means for detecting the presence or absence of grain culm. By this automatic lift function, when the grain culm to be mowed is exhausted in the mowing process, the mowing part automatically moves up to the predetermined position,
The operator can concentrate on the turning operation of the machine body in a headland in a loose field.

On the other hand, in the field, if there is a grain culm lacking part in which the grain culm to be mowed is partially missing, when the harvesting part reaches this grain culm lacking part during the harvesting process by the combine, Although the diverting is not required, the reaper starts to move up by the automatic lift function and is held at the predetermined height position. Therefore, in order to further continue the mowing of the grain culm by passing through the grain culm lacking part, the ascending operation of the mowing unit is immediately stopped, and
It is necessary to adjust the height position of the mowing part.

[0008]

However, the automatic lift function forcibly stops the cutting unit during the raising operation,
In addition, in order to adjust the height position of the mowing section, it is necessary to release the automatic lift function and then manually move up and down with the lifting operation tool, which makes it difficult to deal with it instantaneously. Due to such readjustment of the height position of the mowing unit, the efficiency of the mowing work is reduced.

An object of the present invention is to mow a combine capable of instantaneously stopping the ascending of the mowing section by a simple operation and performing an elevation adjustment operation when the mowing section starts to move upward by the automatic lift function. It is to provide a unit lifting device.

[0010]

In order to solve the above-mentioned problems, the invention according to claim 1 comprises a mowing section capable of moving up and down with respect to a machine body, and an elevating operation tool for moving the mowing section up and down. In the combine harvester lifting device consisting of
Operation conversion means for issuing an operation signal according to the operation of the lifting operation tool, a grain culm detecting means for detecting the presence or absence of grain culm to be mowed by the reaping unit, and a grain due to the absence of grain culm from the grain culm detecting means. When receiving the culm off signal, an automatic raising command means for outputting an automatic raising command to raise the cutting unit to a predetermined height position, and when the cutting unit is raised by the automatic raising command by the automatic raising command unit In addition, the combine harvesting section lifting device is configured to further include a forced stop commanding means for stopping the automatic lifting command in response to the operation signal from the operation converting means.

In this combine harvester lifting / lowering device, when the grain stalks to be mowed are exhausted while the grain stalks are being mowed by the slicing section, the grain stalk detecting means and the automatic raising command means automatically raise the slicing section, and Since the operation conversion means and the forced stop command means are provided, the automatic raising command is stopped when the lifting / lowering operation tool is operated during the automatic raising operation of the reaping section, so that the raising operation of the reaping section is stopped.

Further, the invention according to claim 2 is a holding operation detecting means for detecting that the operation signal is continued for a predetermined time by a holding operation for continuing the operation of the elevating and lowering operation tool, and the holding operation detection means. A combine harvester raising / lowering device is provided with a manual raising / lowering commanding means for preferentially outputting a raising / lowering command to the cutting unit in response to an operation signal from the raising / lowering operation tool based on a detection signal of the means.

In this combine harvester lifting / lowering device, when the lifting / lowering operation tool is held and held on a certain side while the harvesting / lowering of the harvesting unit is stopped, the holding operation detection means switches to the manual lifting / lowering command means. It is manually moved up and down according to the operation of the operation tool.

Further, in the invention according to claim 3, the cutting height detection means for detecting the height position of the cutting portion and the detection position by the cutting height detection means are set in addition to the height position by the automatic raising. The height discriminating means for discriminating that either the upper or lower set height position has been reached, and the discriminating signal by the height discriminating means gives priority to the raising / lowering instruction by the manual raising / lowering instruction means and stops the raising / lowering operation. The harvesting section lifting device of the combine is provided with the forced stop command means.

In this combine harvesting section lifting device, when the harvesting section reaches the target height position by manual operation, the harvesting height detecting means and the target height determining means output a determination signal, and the determination signal forcibly stops. The command means commands the stop of the raising / lowering operation of the reaper and is held at the target height position.

[0016]

The combine harvester lifting device of the present invention has the following effects. By including the operation conversion means and the forced stop command means and detecting the operation of the lifting operation tool to forcibly stop the mowing unit at that height position, a special feature for canceling the automatic raising, etc. It is possible to immediately stop the cutting unit during the automatic raising operation by a simple operation of the lifting operation tool without requiring an operation input tool. Therefore, when passing through a place where the grain culm is partially missing as it is and continuing the mowing operation, it is possible to efficiently carry out the necessary response operation without waiting for the completion of the automatic raising operation of the mowing section. You can

When the reaper raising / lowering device is provided with the holding operation detecting means and the manual raising / lowering command means, when the raising / lowering operation tool is held and operated while the automatic raising of the reaper is stopped, the reaper is raised and lowered thereafter. It can be operated. Therefore, it is possible to shift to manual operation by a simple holding operation of the lifting operation tool and adjust the height of the mowing section arbitrarily without requiring a special input means such as a changeover switch for switching to manual lifting.

[0018] The height of the mowing section elevating device,
When the reaper has reached the target height position, the elevating operation is stopped and the reaper is held at the height position when the target height determination means is provided. Therefore, the mowing unit is maintained at the target height by a simple operation without requiring a fine manual adjustment operation, so that the next working process can be smoothly started while avoiding too high or too low. .

[0019]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments specifically configured based on the above technical idea will be described below with reference to the drawings. First, the overall configuration of a combine incorporating the reaper section lifting device according to the invention will be described. FIG. 1 shows a side view of the overall configuration of an example of the configuration of the combine.

In FIG. 1, the combine is a crawler a.
A drive shaft (also referred to as an axle or wheel shaft) b of the crawler, a mowing unit c whose height position can be adjusted, a feed chain d for feeding the mowing culm to the threshing machine while conveying it, and a threshing machine. e, a grain tank f for storing threshed grains, an auger g for discharging the stored grains out of the machine, and the like. The cutting unit c is provided with a grain culm detection sensor and a height position detection sensor (not shown), and a driver's seat h having various operation switches arranged at the front end of the machine body, an engine (not shown) in the machine body, and a cutting unit c. The control device includes an elevating control device for controlling elevating drive, and includes a control device for controlling the operation of various equipment devices.

Next, the operation switch arranged in the driver's seat of the combine will be described. Fig. 2 shows the switch layout of the driver's seat of the combine harvester. In FIG. 2, the HST lever 41 tilts forward and backward to increase or decrease the vehicle speed. When the HST lever 41 is tilted forward from the neutral position in the figure, the speed is increased in the forward direction, and when tilted backward, the speed is increased in the reverse direction. . Then, when returning from the forward or reverse position to the neutral position direction, the speed is reduced,
The aircraft will stop in the neutral position.

The accelerator lever 42 tilts back and forth to open and close the throttle to raise and lower the engine speed. When tilted backward, the throttle opens to increase the engine speed, and when tilted forward, the throttle closes. Reduce the engine speed.

The power steering lever 43 is constructed so that it can be tilted forward, backward, leftward and rightward in order to raise and lower the reaper and turn the machine body. When tilted forward from the neutral position, the operation conversion unit (not shown) generates an operation signal for lowering the mowing unit and tilting it backward for ascending the mowing unit. Similarly, an operation signal for turning left when tilted to the left and a right turn when tilted to the right is similarly generated.

On the operation panel, an automatic lift switch 44, a cutting height adjustment dial 45, a cutting height switch 46 and the like are arranged for the cutting unit. The automatic lift switch 44 generates a selection operation signal for selecting the activation of the automatic lift function based on the detection signal of the grain culm detecting means by the grain culm sensor (not shown) provided in the cutting unit c. The cutting height adjustment dial 45 is for setting the cutting height of the cutting unit. The cutting height switch 46 generates a selection operation signal when selecting to validate the setting of the cutting height adjustment dial 45.

Next, the combine harvester elevation control device according to the present invention will be described. FIG. 3 shows an example of the configuration of the input / output signals of the reaper section lifting control device.

In FIG. 3, the reaper section lifting / lowering control device is provided with a logical operation processing section 10 by means of a CPU, which processes an output signal for raising / lowering the reaper section based on an operation input or the like. The logical operation processing unit 10 includes a cutting height automatic switch 1
1, auto lift switch 12, reaping lever 13,
The signals of the mowing lowering lever 14, the one-touch switch 15 and the like are binary input, the signals of the cutting height position sensor 16 and the like are analog value input, and the mowing upper output 21 and the mowing lower output 2
The drive command of the reaper such as 2 is output.

The cutting height automatic switch 11 sends selection information for selecting a function for automatically adjusting the height position based on the ground height signal of the cutting unit. Auto lift switch 1
2 sends selection information for selecting the automatic lift function of the reaper. The reaping lever 13 and the reaping lowering lever 14 are operation conversion switches for converting the operation of the power steering lever 43 for raising and lowering the reaper, and send operation information corresponding to the operation of the power steering lever 43. The one-touch switch 15 outputs selection information for selecting activation of the semi-automatic function by one-touch operation. These pieces of information are binary signals that are on or off.

The cutting height position sensor 16 detects the height position of the reaper and sends the height position information by an analog value signal corresponding to the height position. The mowing upper output 21 and the mowing lower output 22 are elevating drive commands for moving the mowing section up and down.

Next, an example of the structure relating to the basic function of the combine harvester lifting device according to the present invention will be described. FIG. 4 is a block diagram showing the basic functions of the combine harvester lifting device according to the invention.

In FIG. 4, the reaper unit lifting / lowering device is mainly composed of a grain culm detecting means 51, an automatic raising instruction means 52 incorporated in the logical operation processing portion 10, and a reaper portion c which receives the raising / lowering driving command. Furthermore, the lifting / lowering operation tool 43, its operation converting means 13 and 14, and the forced stop instruction means 53 are provided.

The grain culm detecting means 51 comprises a grain culm sensor provided in the reaper, and the reaper detects the presence or absence of grain culm to be mowed. The automatic raising command means 52 is a grain culm detecting means 51.
When the absence of grain culm is detected, the raising command of the cutting unit c is continuously output. The lifting operation tool 43 is the operation conversion means 1
The forward tilting operation signal corresponding to the lowering of the mowing section is output by the forward tilting operation of the power steering lever through 3, 14 and the backward tilting operation signal corresponding to the raising of the mowing section is output by the tilting operation thereafter. The forced stop command means 53 is the automatic lift command means 5
2 detects a tilting operation of the lifting / lowering operation tool 43 while the cutting unit c is moving upward, and performs a logical operation process to stop the lifting command of the automatic lifting command means 52.

The reaper raising / lowering device thus constructed is
In the mowing process by the mowing unit c, the grain culm detecting unit 51 detects that the grain culm to be mowed has been exhausted, and the automatic raising commanding unit 52 continuously outputs a raising command by the detection signal, whereby the reaping unit c is automatically driven up. That is, the grain culm detecting means 51 and the automatic rising instruction means 5
2 and 2, an automatic lifting function of the mowing unit c called an automatic lift is configured.

In this case, when the raising / lowering operation tool 43 is tilted during the automatic raising of the mowing section c, the operation converting means 13, 14 are operated.
Through the forced stop command means 53
Stop the rising command output of. That is, the height of the reaping unit during the automatic raising operation is immediately increased by a simple operation of the lifting / lowering operation tool according to the tilting operation of the lifting / lowering operation tool without requiring a special operation input tool for stopping the automatic lifting operation. Can be stopped and held in position.

Therefore, when the cutting work is continued by passing through the place where the grain culm is partially missing, etc., the necessary handling operation can be efficiently performed without waiting for the completion of the automatic raising operation of the cutting unit. I can proceed well.

Next, a specific logical operation process related to the interruption of the automatic lift function in the combine harvester lifting control device according to the present invention will be described. FIG. 5 shows a logical operation processing procedure diagram related to the forced stop of the automatic raising of the reaper section lifting control device.

In FIG. 5, in step 1 (denoted as S1; the same applies hereinafter), it is checked whether or not the raising operation of the reaper is performed by an automatic raising flag or the like indicating whether or not the automatic lifting is being performed by the automatic lift function. If the automatic lift is not being performed, the lift operation by the automatic lift is monitored in S1 by repeating the process again from the start without performing the following processing.

During the ascending operation by the automatic lift, the completion of the ascent is checked in S4 on condition that the cutting signal of S2 or the cutting signal of S3 changes from OFF to ON. If the stop is not completed, the ascending stop timer is set in S5, and the ascending drive stop command is generated and output by the forced stop command means.

The reaper section elevating and lowering control section for performing the above-mentioned logical operation processing is operated by the forced stop command means during the ascending operation of the reaper section by the automatic lift function without raising or lowering the reaper section operation tool. The raising operation of the reaper can be forcibly stopped by some operation of.

The reaper for raising and lowering the reaping section is provided with the operation converting means and the forced stop command means, and the operation of the lifting operation tool is detected to forcibly stop the reaping section at the height position thereof. It is possible to immediately stop and hold the cutting unit during the automatic raising operation by a simple operation of the lifting operation tool without requiring a special operation input tool for canceling the function.

Therefore, when the cutting work is continued by passing through the place where the grain culm is partially missing, etc., the necessary handling operation can be efficiently performed without waiting for the completion of the automatic raising operation of the cutting unit. I can proceed well. Further, the rise stop timer is for counting the elapsed time after the stop, and by using the rise stop timer, it is possible to perform processing according to the elapsed time.

In the above logical operation processing, the same applies to the case where an auto-down function (a function of automatically lowering the mowing unit to a predetermined position in response to a predetermined operation) is used instead of the auto-lift function. be able to.

Next, the logical operation processing in the case of switching to the manual raising / lowering after the forced stop in the combine harvester raising / lowering control apparatus according to the present invention will be concretely described. FIG. 6 shows a logical operation processing procedure diagram for switching to the manual raising / lowering after the forced stop in the reaping unit raising / lowering control device.

In FIG. 6, the rising stop time is checked by the rising stop timer in S11. If the predetermined time has elapsed, an instruction to restart cutting and raising is issued in S12. By this command to restart ascending, the cutting unit is driven to ascend to a predetermined height position of the automatic lift. When the operation of the lifting lever is continued for a predetermined time, the cutting unit is driven up and down in the operating direction of the lifting lever in S12.

If the predetermined time is not reached, the harvesting signal or the harvesting down signal of S14 is checked in S13, and if both are off, the rise stop timer is counted in S15. On condition that the reaping signal of S13 or the reaping signal of S14 is turned on, the corresponding reaping command of S16 or the reaping command of S17 is set.

By constructing the reaper section lifting control device by such logical operation processing, manual lifting can be selected by operating the lifting operation tool after forcibly stopping the automatic lifting.

Further, regarding the raising and lowering control device for the reaper,
It is possible to add a configuration to continue the stop on condition that the neutral state of the raising / lowering operation tool is reached until a predetermined time elapses after the forcible raising / lowering of the mowing unit is stopped. In this case, after the temporary forced stop, it is possible to select the continuation of the stop in addition to the manual lifting according to the operation of the lifting operation tool.

Next, the logical operation process for changing the ascending position of the automatic ascending in the combine harvesting part lifting / lowering control device according to the present invention will be specifically described. FIG. 7 shows a logical operation processing procedure diagram relating to the change of the ascending position of the automatic ascending of the reaper section lifting control device.

In FIG. 7, the reaping signal is checked in S21. When the pick-up signal is not turned on, the cutting signal is monitored by repeating the following process. When the mowing signal is turned on, the mowing position is checked in S22. The mowing position can be obtained by a mowing height sensor which is a mowing height detecting means for detecting the height position of the mowing section. The check is repeated until the mowing position reaches the ascending target.

When the reaper reaches the ascending target, the reaping ascend stop command of S23 is output as the forced stop command means. The ascending target is an upper change height position set separately instead of the lift position held by the automatic ascending based on the original auto lift function.

As described above, when the raising / lowering operation tool is tilted to the ascending side during the automatic raising operation of the reaping section, the logical operation processing section comprising the reaping height detecting means, the target height discriminating means and the forced stop command means. , It is possible to stop the cutting unit semi-automatically by one-touch operation at a separately set upper changed height position without disturbing the automatic raising operation of the cutting unit.
Therefore, the automatic lifting function can be changed at any time by a simple operation of the lifting / lowering operation tool, and the succeeding work can be smoothly advanced by switching the rising position.

In this case, the lower modified height position is set in addition to the upper modified height position, and the lower modified height position is set as the lowering target to correspond to the lowering operation of the elevating and lowering operation tool, thereby changing the lower part of the mowing unit. It can be stopped in the height position.

Next, various functions which can be incorporated in the combine harvesting section elevation control device according to the present invention will be described.

First, a logical operation process for activating the automatic lift function by selecting the selection switch will be described. FIG. 8 shows a logical operation processing procedure diagram for enabling the automatic lift function by the selection switch.

In FIG. 8, the automatic lift switch is checked in S31. When the selection signal from this switch is off, the selection signal is monitored by repeating the processing without further processing. When the selection signal is turned on, the above logical operation processing is performed. By checking the auto lift switch, it is possible to select whether to enable the auto lift function.

Next, the manual raising and lowering of the reaper from the changed height position will be described. When the neutralizer of the lifting operation tool is detected or the operation to the descending side is detected when the mowing unit is stopped at the upper change height position due to the change of the automatic lift function described above, the operation of the lifting operation tool is performed. It is possible to configure the reaper section elevation control device so as to output a raising / lowering drive command for the reaper section.

With this configuration, it is possible to select manual lifting without interfering with the operation of the reaping unit that is semi-automatically lifted. By selecting this manual lifting, the height position of the mowing part can be arbitrarily adjusted according to the situation.

In the above structure, the lower change height position is used instead of the upper change height position, and the neutral or ascending operation is performed instead of the neutral or descending operation of the lifting operation tool. The same can be applied to the case where the mowing unit descends semi-automatically.

Next, the intermittent lowering operation of the reaper will be described. When the reaper is forcibly stopped at the above-mentioned lower changed height position, the reaper control unit for raising and lowering the reaper is intermittently output by detecting that the raising / lowering operation tool has been operated to the lower side. Can be configured.

With this configuration, when the robot is lowered to the lower changed height position, the semi-automatic slow-speed descent can be selected by the operation of the elevating and lowering operation tool on the descending side without disturbing a series of operations. it can. By selecting the slow descent, it is possible to reduce the shock at the time of contact and adjust the cutting unit to the closest position to the ground.

[Brief description of drawings]

FIG. 1 is an overall side view showing a configuration example of a combine according to the present invention.

FIG. 2 is a switch layout diagram of a driver's seat in the combine of FIG.

FIG. 3 is an example of input / output signals of a mowing section lifting control device in the combine of FIG.

FIG. 4 is a configuration diagram related to basic functions of a mowing section lifting device in the combine of FIG. 1.

FIG. 5 is a logical operation processing procedure diagram related to forced stop of automatic raising of the reaper section lifting control device in the combine of FIG. 1;

6 is a logical operation processing procedure diagram for switching to manual lifting after forcibly stopping the reaping unit lifting control device in FIG.

FIG. 7 is a logical operation processing procedure diagram related to changing the ascending position of the reaper section lifting / lowering control device of FIG. 5;

FIG. 8 is a logic operation processing procedure diagram for enabling the automatic lift function by a selection switch.

[Explanation of symbols]

c Mowing unit 13 Mowing upper lever switch (operation conversion means) 14 Mowing lower lever switch (operation conversion means) 16 Cutting height position sensor 43 Lifting operation tool (power steering lever) 51 Grain culm detecting means (grain culm sensor) 52 Automatic raising command means 53 Forced stop command means S2 Mowing operation signal check S3 Mowing operation signal check S5 Forced stop command processing (forced stop command means) S13 Mowing operation signal check S14 Mowing operation signal check S16 Mowing lift command (manual lifting means) S17 Mowing bottom ascending command (manual lifting means) S21 Mowing rise command processing S22 Mowing position check (height discrimination means) S23 Forced stop command processing (forced stop command means)

Claims (3)

[Claims] 1. A combine having an reaper capable of moving up and down with respect to a machine body, and a lifting operation tool for moving the reaping section up and down, wherein an operation conversion means for issuing an operation signal according to an operation of the lifting operation tool. And a grain culm detecting means for detecting the presence or absence of grain culm to be mowed by the reaping section, and when the grain culm off signal due to the absence of grain culm is received from the grain culm detecting means, the reaping section is raised to a predetermined height position. An automatic raising command means for outputting an automatic raising command to operate, and an automatic raising instruction is stopped by receiving an operation signal from the operation converting means when the cutting unit is raised by the automatic raising instruction by the automatic raising instruction means. A combine harvesting section raising / lowering device comprising: a forced stop command means. 2. A holding operation detecting means for detecting that the operation signal has continued for a predetermined time by a holding operation for continuing a constant operation of the lifting operation tool, and the lifting operation by a detection signal of the holding operation detecting means. The combine harvesting part lifting device according to claim 1, further comprising: a manual lifting command means for preferentially outputting a lifting command to the cutting part in response to an operation signal from the tool. 3. A mowing height detecting means for detecting the height position of the mowing section, and a position detected by the mowing height detecting means is one of an upper portion and a lower portion which are set in addition to the height position by automatic raising. A height discriminating means for discriminating that the set height position has been reached, and a forced stop commanding means for stopping the ascending / descending operation by prioritizing the ascending / descending command by the manual ascending / descending command means by a discrimination signal by the height discriminating means. 3. The combine harvesting unit lifting device according to claim 2.