JPH0236201B2 - - Google Patents

Description

[Detailed description of the invention] When a conventional combine harvester completes one reaping stroke and rotates the machine to move on to the next reaping stroke, the pretreatment device is first raised, and the side clutch is disengaged depending on the case. Various lever operations, such as activating the brake on that side, must be performed instantaneously, and if the timing of the brake activation is inappropriate, the operator may fall over the adjacent uncut grain culm. , which required extremely advanced maneuvering skills.

The present invention allows the machine to automatically rotate by simply operating either the left or right manual direction correction switch at the end of the reaping process, thereby eliminating the need for various lever operations.
An object of the present invention is to provide a control device for a combine harvester, which allows even a person with inexperienced operating skills to safely and quickly rotate the machine, and which also prevents the user from stepping on uncut grain culms when the machine rotates automatically. It is something that
A threshing device having a clamping conveyor consisting of a feed chain and a clamping rail is mounted on the uncut land side of the machine base having a traveling device, and a driving unit is installed in the front part of the other side.
A combine harvester is equipped with a pre-processing device consisting of a reaping device and a grain culm conveying device movably mounted in front of the threshing device, and a mowing end detector is provided on the feed chain side of the machine body to detect the end of the reaping process, and the A pair of left and right manual direction correction switches are provided in the driving section, and the manual direction correction switches and the end of mowing detector are connected to a traveling direction control circuit, and when the end of mowing detector detects the grain culm during the reaping and threshing operation. The present invention is characterized in that the handbrake is inserted so that when the side clutch is disengaged and the end-of-mowing detector is in a non-detecting state, the handbrake is activated following disengagement of the side clutch.

The embodiment shown in the drawings will be explained below.1
is a threshing device mounted on one side of a machine base having a traveling device 2, in front of which a pre-processing device 6 consisting of a reaping device 4 and a grain culm conveying device 5 is installed so as to be movable up and down; The machine 3 is equipped with a straw processing device 7 such as a cutter and/or a knotter.
On the other side, an operation panel 8, a cockpit 9, a grain tank 10, and an engine are provided in order from the front.

Reference numeral 12 denotes a pair of left and right gripping rods that stand up from both sides of the operation panel 8. Manual direction correction switches S ₁ and S ₂ are provided on the thumb side of the grip, and a power source and a power supply are provided on the upper surface of the operation panel 8. A main switch _S8 is provided to connect and disconnect the control circuit, and 13 is a manual side clutch lever.

Further, a lever panel 14 provided between the pilot's seat 9 and the grain culm conveying device 5 is provided with a traveling speed change lever, a preprocessing lift lever, a clutch lever 17, etc., and the base of the clutch lever 17 is rotatable. The boss portion of a threshing clutch arm 19 is rotatably pivoted to the right side of the support shaft 18, and the preprocessing clutch arm 2 is attached to the left side of the support shaft 18 so as to be tilted laterally.
The base of 0 is rotatably pivoted, and those arms,
Notches 2 that can face each other at the tips of 19 and 20
1 and 21 are provided, and when the clutch lever 17 is engaged with the notch 21 of the threshing clutch arm 19 and set to the C position, the threshing switch _S3 is turned OFF, the threshing clutch is disengaged, and the clutch lever 17 is tilted forward. When the threshing switch _S3 is turned ON and the clutch lever 17 is tilted to the left and set at the a2 position, the clutch lever 17 escapes from the notch 21 of the threshing clutch arm 19 and moves forward. Processing clutch arm 2
The threshing switch _S3 is turned on.
The threshing device 1 is still being driven.

Furthermore, when the clutch lever 17 is set to the forward position b, the pretreatment switch _S4 is turned on and the pretreatment clutch is engaged.

Conversely, when the clutch lever 17 is tilted from the b position to the a2 position, the pretreatment switch _S4 is turned OFF.
When you tilt sideways to position A1 and then tilt to position c,
The threshing switch _S3 is also turned off, and the pre-processing device 6 and the threshing device 1 are stopped in this order.

The upper part of the support frame 22 of the preprocessing device 6 is a link 23
The pump 25 is connected to the strut 24 via the
The hydraulic cylinder 26 is equipped with an electromagnetic valve 27, and a protrusion 28 at the upper end of the support frame 22 is connected to a rise limit switch _S5 or an upper limit switch _S6 to control the height of the pretreatment device 6. Contact accordingly.

In addition, a grain culm detection switch _S7 is provided at a portion corresponding to the approximate center of the traveling device 2 of the machine body, as shown in FIGS. 1 to 2 and FIG. The culm detection switch S ₇ is operated in the state shown in FIGS. 3 and 4, and the longitudinal length of the traveling device 2 is set on the clamping conveyance body consisting of the feed chain 1a and the clamping rail 1b of the threshing device 1, as shown by the dotted lines in FIGS. 1 and 2. It may be provided to correspond to approximately the middle part of the mowing machine.The point is that it is sufficient to detect that the middle part of the traveling device 2 corresponds to the cutting end point, and if a timer or the like is used, It may be set in

As shown in Figure 9, the autopilot control circuit has S ₁ , S ₂ , S ₃ , S ₄ , S ₅ , S ₆ , and S ₇ on the input side, and the right brake, right side clutch, and left brake on the output side. It is equipped with the brake, left side clutch, pretreatment raising and pretreatment lowering solenoids, and relay _S9 for the automatic handling depth control circuit.

Next, to explain the running direction control and the elevation control of the pre-processing device, S ₃ and S ₄ are
_S7 is ON when the planted grain culm (or the grain culm held by the feed chain 1a and the clamping rail 1b) is detected, and S7 is ON when it is not detected.
When correcting the running direction with S ₃ , S ₄ , and S ₇ turned OFF and ON, press S ₁ or S ₂ , which is the thumb of the hand that is gripping the gripping rod 12.
An H level signal is output from NOR circuit a or b and the right or left side clutch is disengaged, but the NOR
Since the output of circuit c or d is at the L level, the direction can be corrected without the left and right brakes operating.
When both S ₁ and S ₂ are pressed, the left and right side clutches are disengaged and the machine stops, but the brakes do not operate and the NOR circuits e and f do not output during this reaping, so the pre-processing device maintains the lowered reaping posture. Does not descend (first
(See columns 1 and 2 in Figure 0).

In addition, when one cycle of reaping is completed and the machine is rotated with the threshing crack engaged, S ₃ and S ₄ are ON, and S ₇ is turned on until the middle part of the traveling device 2 reaches the already mown field (or It is ON (until the grain culm passing through the middle part of the feed chain), and it is turned OFF when it enters an already mown field. For example, when the front part of the traveling device 2 enters an already mowed field, S ₁ or Even if you press S ₂ , one side clutch will only disengage like the above-mentioned direction correction, and the brakes will not operate, so the aircraft will not turn suddenly.

In other words, when _S7 is turned OFF by reaching the middle part of the traveling device 2 into the mowed field, an H level signal is output from the NOR circuit c or d, and the right or left brake is activated, so that the traveling device 2 The machine can be rotated quickly without stepping on the planted grain culm, and during this rotation, an H level signal is output from the NOR circuit e due to the input from the NAND circuit e', so the preprocessing device 6 is raised. However, when S ₅ is turned on as it rises, it will reach an intermediate height and stop after a short period of time.

When the aircraft is rotated and alignment is completed, S ₃ and S ₄ are
If you press S ₁ and S ₂ on the left and right when it is ON and S ₇ is OFF, the side clutches on both sides will disengage, then each brake will be applied to stop the aircraft, and at the same time the NAND
Since the H level signal is output from the circuit f, the preprocessing device descends from the intermediate height in a short time and returns to the reaping position (see columns 3 and 4 of FIG. 10E).

Note that this operation of stopping the machine and lowering the pretreatment device is also performed at the start of reaping.

Furthermore, when mowing, etc., disengage the pretreatment clutch, turn S ₄ off, and press S ₁ or S ₂ on one side to make the machine turn with S ₃ on and S ₇ off. After the H level signal is output from the NOR circuit a or b, the H level signal is also output from the NOR circuit c or d, so after the right or left side clutch is disengaged, the associated brakes are activated and the NAND The signal from circuit e″ causes NOR circuit e
Since an H level signal is output from S6, the preprocessing rising solenoid is energized, and the preprocessing device ₆
It rises to the maximum until it turns ON and stops (10th
(Refer to column 5 in Figure E), if you rotate the aircraft to align the lines and then press S ₁ and S ₂ on both sides at the same time, the left and right side clutches are disengaged, the brakes are applied, and a signal is released from the NAND circuit f. H level signal is output,
The pretreatment device 6 is lowered (see column 6 of FIG. 10E).

Also, when driving on the road, as shown in column 9 of Figure 10E, when the aircraft is running with S ₃ OFF, pressing S ₁ (or S ₂ ) on one side will turn off the NOR circuit a on that side.
(or b) and c (or d) output H level signals, the side clutches are disengaged, the brakes are applied, and the aircraft turns. Also, when S ₁ and S ₂ are pressed, both side clutches are disengaged. At the same time, the brakes are activated and the aircraft stops.

At this time, the solenoid on the ascending side or descending side of the electromagnetic valve 27 communicating with the hydraulic cylinder 26 that raises and lowers the pretreatment device 6 is not energized, and the pretreatment device 6
continues to rise.

That is, during reaping work and while driving on the road, the operator holds the left and right gripping rods 12 separately with the clutch lever 17 set at the required position, and as shown in FIG. 10A.
As shown in the figure, just press S ₁ , S ₂ on the left and right to select S ₃ , S ₄ ,
The running direction can be automatically controlled according to the S ₇ detection signal,
Along with these operations, the pretreatment device is raised or lowered as shown in FIG. 10B or FIG. 10C.

In short, to correct the traveling direction of the combine harvester during reaping work, only the side clutch is operated by pressing S ₁ and S ₂ , and during this time the pretreatment device 6 does not rise.
In addition, when one stroke of reaping is completed, simply pressing either S ₁ or S ₂ releases the side clutch on that side, and the threshing detection switch S ₇ detects when the grain culm is gone in the middle of the traveling device 2. When this is detected and the system is turned off, the brakes are applied, allowing the aircraft to rapidly move around without stepping on adjacent planted grain culms.

During this time, just by pressing either S ₁ or S ₂ , the pretreatment device 6 will rise to S ₅ without operating the side clutch lever or lift lever, and the machine will rotate, and after the rotation, the strip alignment will be performed. When you press S ₁ and S ₂ at the same time, the machine will stop and the pre-processing device 6 will automatically lower. Then, just by releasing your thumbs from S ₁ and S ₂ , the left and right side clutches will engage and resume reaping. can do.

In addition, relay S ₉ of the automatic handling depth control circuit or other automatic control circuit cannot be disconnected when S ₃ , S ₄ , and S ₇ are ON, that is, even if one of S ₁ or S ₂ is pressed during reaping, Among them, when S ₁ and S ₂ are pressed simultaneously to stop the aircraft, and at least one of S ₃ , S ₄ , and S ₇ is OFF, i.e.,
When not reaping, the machine is automatically cut off as shown in Figure 10E, so when the machine is rotated or stopped, the control state before stopping is maintained, preventing control trouble from occurring when reaping reaping. do not have.

As described above, the present invention includes a threshing device having a clamping conveyor consisting of a feed chain and a clamping rail mounted on the uncut land side of a machine base having a traveling device, and a driving section provided in the front part of the other side. A combine harvester is equipped with a pre-processing device consisting of a reaping device and a grain culm conveying device movably mounted in front of the threshing device, and a mowing end detector is provided on the feed chain side of the machine body to detect the end of the reaping process, and the A pair of left and right manual direction correction switches are provided in the driving section, and the manual direction correction switches and the end-of-mowing detector are connected to a running direction control circuit, and when the end-of-mowing detector detects the grain culm during the reaping and threshing operation. When the side clutch is disengaged and the end-of-mowing detector is not detected, the handbrake is activated after the side clutch is disengaged, so the end-of-mowing detector on the side of the grain-carrying body of the grain device automatically detects the situation during mid-cutting. Even during circular mowing, uncut grain rods can always be detected on the above-mentioned clamping conveyor side, and during the reaping and threshing operation, regardless of the detection state of the end of mowing detector, the driver can With a single operation of operating the running direction correction switch, if the end-of-mowing detector detects a grain culm, the side clutch is disengaged and a gentle running direction correction is made, and if no grain culm is detected. After the side clutch is disengaged, the handbrake is activated and the machine turns rapidly, making it possible for even inexperienced drivers to correct the running direction and turn the machine during reaping and threshing with simple operations without making any mistakes. In addition, it is possible to prevent a decrease in work efficiency due to erroneous operation.

[Brief explanation of drawings]

The drawings show one embodiment of the invention,
Fig. 1 is a front perspective view of the combine, Fig. 2 is a side view of the same, Fig. 3 is a plan view of the grain culm detector, Fig. 4 is a side view of the same, Fig. 5 is a plan view of another example of the above, 6th
The figure is a plan view of the clutch lever operating section, FIG. 7 is a side view of the same as above, and FIG. 8 is a side view of the pre-processing section lifting device.
Figure 9 is a control circuit diagram, Figure 10 A, B, C, D,
E is a drawing showing the relationship between input and output of the control circuit, and FIG. 11 is a perspective view of the operation panel. 5... Grain culm conveyance device, 6... Pretreatment device, S ₁ ...
... Right direction correction switch, S ₂ ... Left direction correction switch, S ₃ ... Threshing switch, S ₄ ... Preprocessing switch, S ₇ ... Grain culm detection switch.

Claims (1)

[Claims] 1. A threshing device having a clamping conveyor consisting of a feed chain and a clamping rail is mounted on the uncut land side of a machine base having a traveling device, a driving section is installed in the front part of the other side, and a threshing device is installed in front of the threshing device. In a combine harvester equipped with a pre-processing device consisting of a reaping device and a grain culm conveying device that can be moved up and down, a mowing end detector is installed on the feed chain side of the machine body to detect the end of the reaping process, and a pair of left and right A manual direction correction switch is provided, and the manual direction correction switch and the end-of-mowing detector are connected to a running direction control circuit, and when the end-of-mowing detector detects a grain culm during reaping and threshing work, the side clutch is disengaged and the mowing end is stopped. A combine harvester steering control device characterized in that the device is inserted so that when an end detector is in a non-detecting state, a side clutch is disengaged and a hand brake is operated.