JPH0131842B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a combine harvester equipped with a grain culm handling depth adjustment device, more specifically, a grain culm handling depth adjustment device is provided, and the adjustment device is connected to a grain culm conveyance detection sensor, a grain culm conveyance detection sensor, a long and short culm detection sensor, The present invention relates to a combine harvester in which an automatic control circuit is formed for automatic control using a sensor, and the control circuit is provided with an automatic switch for switching the circuit to a non-operating state.

Generally, this type of combine harvester includes a reaping section and a threshing section, and a grain conveying device is provided between the reaping section and the threshing section, and the grain culm harvested in the reaping section is transferred to the threshing section by the conveying device. The grain is transported and supplied, and then threshed in the threshing section.

The handling depth adjusting device is interlocked and connected to the conveying device, and the adjusting device allows the conveying device to swing toward and away from the feed chain of the threshing section. The handling depth of the grain culms by the threshing section can be adjusted by changing and adjusting the delivery position of the grain culms with respect to the feed chain.

Further, the above-mentioned automatic control circuit is connected to the adjustment device, and the circuit is operated by an automatic switch of the control circuit to automatically control the adjustment of the handling depth of grain culms by the conveyance device, and A manual switch for operating the conveying device between deep handling and shallow handling is connected to the adjustment device, and the conveying device can also be operated manually via this switch.

By the way, when the combine harvester is running for work, the automatic control circuit is opened by an automatic switch.
Work may be carried out by adjusting the grain culm conveying device to the deepest handling side or the shallowest handling side using a manual switch. For example, when manually threshing grain culms from a headland, or when moving a combine harvester between fields, move the conveying device to the deepest handling side inside the machine. However, after moving the grains to the deepest or shallowest handling side of the conveyor and performing the specified work, if they forget to close the automatic control circuit and start the reaping and threshing work. Since the conveying device remains moved to the deepest or shallowest handling side, grain culms may be left unhandled or grain culms may become clogged in the threshing section.

The present invention was made in view of the above problems, and it is possible to move the grain culm conveying device to the deepest or shallowest handling side and close the automatic control circuit after performing a predetermined work. If someone forgets to do the reaping and threshing operation with the circuit turned off, an alarm is issued for a certain period of time to notify the operator of the abnormality, and the reaping and threshing operation is continued in the abnormal state, resulting in unhandled grain culms. This is to prevent clogging and clogging.

More specifically, an operating circuit is formed that continuously outputs an output for a certain period of time in response to an input, and when the automatic switch switches the automatic control circuit to a non-operating state, A detection sensor is connected to the output side of both sensors to be activated by both outputs, and this activation circuit is connected to an alarm device to operate the alarm device for a certain period of time, and an alarm is output from the activation circuit. The present invention is characterized in that either one of the outputs from the two sensors to the operating circuit is cut off depending on the output to the device.

DESCRIPTION OF THE PREFERRED EMBODIMENTS The combine harvester of the present invention will be explained below with reference to embodiments of the drawings.

In the figure, 1 is a fuselage of a combine harvester, which is equipped with a traveling device 2 at the lower part and a threshing section 3 at the upper part. A reaping section 4 is provided in the front part of the reaping section 1, and a grain culm conveying device 5 is interposed between the reaping section 4 and the threshing section 3, and the grain culm harvested by the reaping section 4 is transferred to the conveying device 5. It is delivered to the feed chain 31 of the threshing section 3 through the
1, the grains are transported and supplied into the threshing section 3 for threshing processing.

The transfer device 5 is provided with a handling depth adjustment device 8 consisting of a swing mechanism 6 provided between the transfer device 5 and the machine body 1, and a solenoid valve 7 for swinging the mechanism 6. By operating the device 8, the conveying device 5 is swung toward and away from the feed chain 31 of the threshing section 3, and the delivery position of the conveyed grain culm relative to the chain 31 is changed and adjusted. The handling depth of grain culms can be adjusted.

As shown in FIG. 2, the handling depth adjusting device 8 for swinging the conveying device 5 includes
An automatic control circuit 9 is electrically connected to the adjustment device 8 to automatically control the control circuit 9.
Separately, manual switches 10a and 10b are connected to reverse the adjustment device 8, and the adjustment device 8 is connected to an automatic control circuit 9 and manual switches 10a and 10b.
0b.

The automatic control circuit 9 includes a first sensor 11 for detecting grain culm conveyance, which is provided near the grain culm supply port of the threshing section 3 and close to the feed chain 31, and a first sensor 11 for detecting grain culm transport, which is provided at the front end of the supply port, for detecting long and short culms. 2nd sensor 1 of
2, and a third sensor 13 provided between the first and second sensors 11 and 12. In other words, the automatic control circuit 9 includes a normally open switch 11a interlocked with the first sensor 11; A normally open switch 12a that is linked to the second sensor 12, normally open and normally closed switches 13a and 13b that are linked to the third sensor 13, and two smoothing circuits 14 and 14 that smooth the output signals from these switches. These switches 11a, 12a, 13
a, 13b and smoothing circuits 14, 14 are wired as shown in FIG.

Specifically, each of the normally open switches 11a, 12
a, 13a are connected in series, and a smoothing circuit 14 is connected to this.
are connected to form a shallow handling control circuit 15, and a branch circuit is provided between each normally open switch 11a, 13a of the first and third sensors 11, 13,
This circuit includes a normally closed switch 13b that operates in reverse in conjunction with the normally open switch 13a of the third sensor 13.
and the smoothing circuit 14 to form a deep handling control circuit 16, and the shallow handling control circuit 1 is connected to the smoothing circuit 14.
5 is connected to the shallow treatment solenoid 7a of the electromagnetic valve 7 in the treatment depth adjustment device 8 via a limiter 17, and the deep treatment control circuit 16 is connected to the deep treatment solenoid 7a of the solenoid valve 7 via the limiter 17. The second and third sensors 12 and 13 measure the length of the grain culm reaching the threshing section 3.
Based on the detected value, both the control circuits 15 and 16 are selectively operated, and the solenoid 7
Activate either a or 7b to transfer the grain culm conveying device 5.
It is intended to automatically adjust to either shallow or deep treatment.

Further, automatic switches 18, 18 are interposed on the output side from each switch 12a, 13b in both the control circuits 15, 16, and the automatic switches 18, 18 are interlocked with each other to turn on and off. The control circuits 15, 16 are intended to be switched into an activated or deactivated state.

In the figure, 19 is a power supply, and 20 is a key switch.

However, in the above configuration, the present invention has the following features:
automatic switches 18 and 1 provided in the shallow handling and deep handling control circuits 15 and 16 in the automatic control circuit 9;
An operating circuit 21 that continuously outputs an input for a certain period of time is connected to the open terminal of the circuit 8.

This operating circuit 21 includes the automatic switch 18,
Two on-delay circuits 22, 22 individually connected to the 18 open side terminals, and each circuit 22,
22, and one monomulti circuit 24 connected to the output side of each circuit 23, 23.

Then, an alarm device 26 such as an alarm buzzer is connected to the output side of the mono-multi circuit 24 in the operating circuit 21 via a switching circuit 25, and when the automatic control circuit 9 is switched to a non-operating state by the automatic switch 18. , the shallow handling control circuit 1
Each normally open switch 11a, 12a,
13a and the normally closed switch 13b interposed with the deep handling control circuit 16 is turned on, the operating circuit 21 outputs an output for a certain period of time,
The alarm device 26 is activated.

Also, the normally open and normally closed switches 13a and 13 of the third switch 13 in each of the control circuits 15 and 16
An R.S.F.F. (reset, reset, flip-flop) circuit 27 is interposed between the input side of the circuit 21 and the output side of the operating circuit 21. The reset R terminal of the R.S.F.F. circuit 27 is connected to the input side of each of the switches 13a and 13b via the transistor 28, and the set S terminal of the circuit 27 is switched to the output side of the operating circuit 21. AND circuits 23, 23 connected via a circuit 29 and having the output terminal _Q2 of the circuit 27 connected to the actuating circuit 21;
It is connected to the input side of the

That is, when the reset terminal R of the R.S.F.F. circuit 27 is at O level, that is, when the normally open switch 11a of the first sensor 11 provided in the shallow handling control circuit 15 is in the on state, the R・SF・
An output signal is output from the output terminal _Q2 of the F circuit 27, and when the operating circuit 21 is closed, the output signal is output from the AND circuits 23, 23 to the monomulti circuit 24,
When the alarm device 26 is to be activated, and when the signal is output from the monomulti circuit 24 to the alarm device 26, the set terminal S of the R.S.F.F. circuit 27 is turned off via the switching circuit 29. level and the output terminal Q ₂ of the circuit 27 is set to O.
This level is used to stop the output from each of the AND circuits 23, 23, and to stop the operation of the alarm device 26.

In short, the R・S・F・F circuit 27 and the switching circuit 29 are connected from the operating circuit 21 to the alarm device 2.
6 and when the alarm device 26 is activated, instead of allowing the alarm device 26 to continue operating, the input to the activation circuit 21 is cut off after a certain period of time and the alarm device 26 is stopped. It is used to make people feel better.

This is because, with the automatic control circuit 9 open, the handling depth adjusting device 8 is manually operated to move and adjust the grain culm conveying device 5 to the shallowest or deepest handling side and various operations are performed. If the operator forgets to close the control circuit 9 and performs the reaping and threshing operation of the combine harvester, the operator will immediately notice by activating the alarm device 26 for a short time, and the operator will not forget to close the control circuit 9 and perform the reaping and threshing operation of the combine harvester. Sometimes, ultra-short or ultra-long culms are harvested and threshed manually.
If the alarm device 26 continues to operate in such a case, the noise will be loud and it will cause more inconvenience.Therefore, the alarm device 26 should be operated only for a certain period of time using the R/SF/F circuit 27 and the switching circuit 29. I wanted to do it.

The switching circuit 29 connected to the R.S.F.F. circuit 27 may be provided on the input side of the actuating circuit 21.

The combine harvester of the present invention is configured as described above, and during reaping and threshing work, the handling depth adjusting device 8 of the grain culm conveying device 5 is operated by the automatic control circuit 9 or the manual switches 10a, 10b, and this conveying device 5 is swung toward and away from the feed chain 31 of the threshing section 3, thereby adjusting the depth at which the threshing section 3 handles grain culms.

Therefore, during the reaping and threshing work of the combine harvester, when threshing the headland harvested grain culms, or when moving between fields, the automatic control circuit 9 is opened by the automatic switches 18, 18. Then, the grain culm conveying device 5 is moved to the deepest or shallowest handling side using the manual switches 10a and 10b. After performing these various operations, the control circuit 9 is closed. Forget the operation,
When the reaping and threshing work is started, the operating circuit 21 connected to the control circuit 9 is activated, and the alarm device 26 issues an alarm to notify the operator.

This alarm device 26 only operates for a certain period of time, so when reaping and threshing ultra-short or ultra-long culms while manually adjusting the handling depth, even if the alarm device 26 is activated, it will not interfere. It is.

As explained above, in the combine harvester of the present invention,
With the automatic control circuit of the handling depth adjustment device open, the grain culm conveying device is moved to the deepest or shallowest handling side, and after a predetermined work is performed, the control circuit is closed. If someone forgets to do the reaping and threshing work with the circuit turned off, the alarm system was designed to issue an alarm for a certain period of time. The automatic control circuit can then be closed to restore the normal state, and it is possible to prevent grain culms from being left unhandled or grain culms from becoming clogged due to continued operation in an abnormal state. be.

In addition, since the alarm device is only activated for a certain period of time, the alarm device may be activated when harvesting and threshing ultra-short or ultra-long culms while manually adjusting the handling depth, that is, when the combine harvester is operating normally. However, the alarm from the alarm device does not become a noise or become a nuisance.

[Brief explanation of drawings]

FIG. 1 is a slope view of a combine harvester according to the present invention;
FIG. 2 is a control circuit diagram of the handling depth adjusting device. 8... handling depth adjustment device, 9... automatic control circuit, 11
... Grain culm conveyance detection sensor, 12, 13... Long and short culm detection sensor, 18... Automatic switch, 21... Operating circuit, 26... Alarm device.

Claims (1)

[Claims] 1. A grain culm handling depth adjustment device is provided, and an automatic control circuit is formed to automatically control the adjustment device by a grain culm conveyance detection sensor and a long/short culm detection sensor, and this automatic control circuit has a In a combine harvester equipped with an automatic switch for switching a circuit to a non-operating state, an operating circuit is formed that continuously outputs an input for a certain period of time, and the automatic switch sets the automatic control circuit to a non-operating state. At the time of switching, the conveyance detection sensor and the long and short culm detection sensor are connected to the output sides of both sensors in order to be activated by their outputs, and this activation circuit is connected to an alarm device to activate the alarm device for a certain period of time. and a grain culm handling depth adjusting device configured to cut off either one of the outputs from the two sensors to the actuating circuit according to the output from the actuating circuit to the alarm device. combine harvester.