JP4057340B2 - Engine stop control device for mobile agricultural machines - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an engine stop control device for a mobile agricultural machine, and more particularly to an engine stop control device for a mobile agricultural machine that stops an engine based on an engine stop signal.
[0002]
[Prior art]
Conventionally, in a mobile agricultural machine such as a combine, it is operated by an operator to forcibly stop the engine when necessary when draining clogging, overflowing a straw tank, or handling threshing on the side of the combine body. An engine stop switch was provided. This engine stop switch is installed at a position closest to the operator, that is, a grain transport chain, for example, in order to enable a quick stop operation from a safety standpoint during manual threshing work. For example, it is provided in the vicinity of the clamping start position of the rail cover, and is distributed in various places on the combine body according to the work contents. By operating this engine stop switch, the engine fuel cut solenoid is operated to output an engine stop signal.
[0003]
[Problems to be solved by the invention]
However, in the past, when the operator felt that it was necessary, for example, when handling a combine harvester, the engine could be stopped by pressing a nearby engine stop switch. Even if the switch is pressed, the driver may not be able to recognize why the engine has stopped and may restart the engine.
[0004]
The present invention has been made to solve such a problem, and an object of the present invention is to issue an alarm when the engine is stopped by operating the engine stop means and to restart the engine carelessly. It is an object of the present invention to provide an engine stop control device for a mobile agricultural machine.
[0005]
[Means for Solving the Problems]
In order to achieve the above object, the invention according to claim 1 is directed to an engine, a threshing section (20) to which power from the engine is transmitted, and threshing the cereal while being conveyed by a feed chain (24), and operation. engine stop means for outputting an engine stop signal (S) based (38) and an engine stop circuit (52) for outputting a cut-off signal (C) that the operating based on the engine stop signal (S) stops the engine In an engine stop control device of a mobile agricultural machine provided with
The engine stop means (38) is disposed on a rail cover (36) that covers the outer side of the rail (26) that holds the cereal with the feed chain (24),
Alarm means (56) for notifying the output of the engine stop signal (S) by an alarm sound ;
To stop the engine based on the operation of the engine stopping means (38) emits an alarm sound by the alarm means (56),
It is in the engine stop control apparatus of the mobile agricultural machine characterized by this .
[0006]
According to a second aspect of the present invention, in the engine stop control device for a mobile agricultural machine according to the first aspect, the alarm means (56) is operated for a time during which the engine stop signal (S) is output. .
[0007]
The invention according to claim 3 is the engine stop control device of the mobile agricultural machine according to claim 1, further comprising an engine speed detection means (42) for detecting the engine speed, and after the operation of the engine stop means (38), The alarm means (56) is operated until the engine speed is stopped.
[0008]
The invention according to claim 4 is the engine stop control device of the mobile agricultural machine according to claim 1, further comprising a time measuring means (50), and is set by the time measuring means (50) after the operation of the engine stop means (38). The operation of the alarm means (56) is stopped after the lapse of the set time.
[0009]
[Action]
According to the present invention, the alarm means (56) for notifying the output of the engine stop signal (S) is provided, the engine is stopped based on the operation of the engine stop means (38), and an alarm sound is generated by the alarm means (56). For example, when the operator operates the engine stop means (38) during the hand threshing operation, the engine stop signal (S) is output from the control unit (44), and this engine stop signal The engine stops based on (S). Further, when the engine stop signal (S) is output, the control unit (44) outputs an engine stop alarm signal (A) for notifying that the engine stop signal (S) has been output. In response to the alarm signal (A), the alarm means (56) is activated to generate an alarm sound . By this warning, a person in the vicinity recognizes that the engine has been stopped by the operator operating the engine stop means (38).
[0010]
In addition, the code | symbol in the above-mentioned parenthesis is for contrasting drawing, Comprising: This invention is not limited at all.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0012]
FIG. 1 is a side view of a combine to which the present invention is applied. In FIG. 1, the combine 10 includes a traveling machine body 14 supported by a pair of left and right crawler traveling devices 12, 12. A pre-processing unit 16 is disposed in front of the vehicle so as to be movable up and down, and a driver's seat 18 is provided on the right side of the upper portion of the traveling machine body 14 behind the pre-processing unit 16. On the left and right sides behind the driver's seat 18, a threshing unit 20 that threshs cereals harvested by the preprocessing unit 16, and a grain that temporarily stores the grain threshed by the threshing unit 20. Tanks 22 are respectively arranged. A vertical cylinder 30a is erected from the bottom of the grain tank 22, and the auger discharge cylinder 30 is supported by the upper portion of the vertical cylinder 30a so as to be able to move up and down. Then, the cereals harvested by the pretreatment unit 16 are supplied into the handling chamber 28 while being sandwiched between the feed chain 24 and the rail 26.
[0013]
Note that the driver's seat 18 has a main transmission lever 32 and a sub-transmission lever 33 that perform a traveling shift of the traveling vehicle body 14 via a continuously variable transmission (not shown), a turning operation of the vehicle body 14, and a lifting operation of the preprocessing unit 16. A multi-steering lever 34 for performing the above is disposed.
[0014]
Further, a rail cover 36 is provided so as to cover the outer side of the rail 26, and an engine stop switch 38 as an engine stop means is disposed at the front portion of the rail cover 36. Further, in the vicinity of the engine (not shown), on the inner side of the feed chain cover 40 that covers the feed chain 24, a P terminal as an engine speed detection sensor that detects a signal output from an alternator (alternator). 42 is disposed.
[0015]
By the way, for example, when harvesting rice and wheat in a paddy field or a field by the combine 10, there is a case where an uncut portion is generated at the corner of the field due to the turning radius of the traveling machine body 14, in this case, the worker However, the harvested rice and wheat are subjected to a so-called manual threshing operation in which the cover covering the handling chamber 28 is opened and the harvested product is manually supplied to the threshing machine. Therefore, there is a case where the handling operator wants to forcibly stop the engine when some inconvenience occurs during the work and is necessary. In such a case, when the engine stop switch 38 is turned on, an engine stop signal S is output from the control unit 44 described later, and the engine stop circuit 52 is activated by the engine stop signal S so that the engine stops. It has become.
[0016]
In the present embodiment, the alarm means 56 that notifies the output of the engine stop signal S is provided, the engine is stopped based on the operation of the engine stop means 38, and an alarm is issued by the alarm means 56.
[0017]
In FIG. 2, on the input side of the control unit 44 composed of a microcomputer, the engine stop switch 38 that outputs the engine stop signal S from the control unit 44 based on the on operation of the operator, and the exhaust wall sensor that detects the exhaust wall clogging. 45, a feed chain clogging sensor 46 for detecting feed chain clogging, a セ ン サ overflow sensor 47 for detecting culm overflow from the grain tank 22, and a pre-processing clogging sensor for detecting clogging during cereal conveyance in the pre-processing unit 16. 48 etc. are connected. The control unit 44 receives a signal from the P terminal 42 that detects the engine speed and incorporates a timer 50.
[0018]
Further, an engine stop solenoid 54 is connected to the output side of the control unit 44 via an engine stop circuit 52. Further, a horn 56 as alarm means is connected to the output side of the control unit 44. For example, when exhaust straw clogging or feed chain clogging is detected, an engine stop signal S is output from the control unit 44 to the engine stop circuit 52, and the engine stop circuit S causes the coil 52a to be turned on by the engine stop signal S. The current flows to switch the contact 52b, and the engine stop solenoid 54 is de-energized by the cut-off signal C. By the non-excitation of the solenoid 54, for example, the fuel supply from the fuel injection valve is cut and the engine is stopped.
[0019]
Further, for example, when the operator presses the engine stop switch 38 during the hand threshing operation, the engine stop signal S is output from the control unit 44 to the engine stop circuit 52 as described above. The contact 52b of the engine stop circuit 52 is switched, the excitation of the engine stop solenoid 54 is cut off, and the engine is stopped. Further, when the engine stop signal S is output, the control unit 44 outputs an engine stop alarm signal A for notifying that the engine stop signal S has been output, and the horn 56 sounds by this engine stop alarm signal A. An alarm is issued.
[0020]
In the present embodiment, during the time when the engine stop signal S is being output, the engine stop alarm signal A is output accordingly and the horn 56 is activated. That is, in this case, when the engine stop switch 38 is pressed, the engine stop alarm signal A is also output while the engine stop signal S is output, and the horn 56 continues to ring. For this reason, even if the surrounding noise is somewhat loud, there is no possibility that the sound of the horn 56 will be heard and missed. By this warning, a person in the vicinity can recognize that the engine has been stopped by pressing the engine stop switch 38.
[0021]
Further, in this embodiment, a P terminal (engine speed detecting means) 42 for detecting the engine speed is provided, and the horn 56 is operated until the engine speed stops after the engine stop switch 38 is operated. .
[0022]
That is, in FIG. 2, when the engine stop switch 38 is turned on, the engine stop signal S is output, and after the engine stop signal S is output, the engine speed is based on the detection signal from the P terminal 42. Until the stop of the engine is detected, the engine stop warning signal A is output and the horn 56 is sounded. As described above, since the horn 56 sounds until the engine speed is stopped after the engine stop switch 38 is turned on, the person in the vicinity recognizes the cause of the engine stop as described above. be able to.
[0023]
Furthermore, in the present embodiment, a timer (time measuring means) 50 is provided, and the operation of the horn 56 is stopped after the time set by the timer 50 has elapsed after the engine stop switch 38 is operated.
[0024]
That is, according to the above-described embodiment, when the engine stop switch 38 is turned on, the engine stop signal S is output and the horn 56 sounds until the engine speed stops. When the wire connected to the terminal 42 is disconnected, it cannot be detected that the engine speed has stopped. In such a case, the timer 50 is automatically set when the engine stop switch 38 is turned on so that the engine speed cannot be detected so that the horn 56 can be sounded. During this time, the horn 56 was sounded. Note that the timer 50 may be automatically set immediately when the engine stop switch 38 is turned on.
[0025]
According to the present embodiment, when the engine stop switch 38 is turned on, an alarm is issued by the horn 56, so that it is easy to identify a sensor failure or disconnection, and maintenance is also facilitated.
[0026]
FIG. 3 shows a flowchart relating to engine stop control in the present embodiment. In FIG. 10, it is determined in S10 whether or not an engine stop flag is set. If the engine stop flag is set, the process proceeds to S16. If the engine stop flag is not set, the process proceeds to S11. In this S11, it is determined whether or not the engine stop switch 38 has been turned on. If it has not been turned on, “end” is reached, and if it has been turned on, the process proceeds to S12. In S12, it is determined whether or not the engine stop switch 38 has been turned on last time. If it has been turned on, the process proceeds to S14. If not, the engine stop delay timer is set in S13, and the process proceeds to S14. move on.
[0027]
The engine stop delay timer is set in S13 in order to prevent malfunction due to chattering when the engine stop switch 38 is turned on. In order to ignore the switch input for a certain time after the switch operation. This is a delay.
[0028]
Next, in S14 described above, it is determined whether or not the engine stop delay timer is 0. If it is not 0, the process reaches "END". If it is 0, the engine stop holding timer is set in S15 and the engine stop flag is set. Proceed to S16. The engine stop holding timer is a timer for outputting the engine stop signal S from the control unit 44 to the engine stop circuit 52, and specifically, a time that can surely stop the engine is set. In S16, it is determined whether or not the engine stop holding timer is 0. If the timer is 0, the engine stop delay timer, the engine stop holding timer, and the engine stop flag are reset in S17, and the engine stop holding is performed. If the timer is not 0, the engine stop output is set in S18.
[0029]
FIG. 4 shows a control flowchart relating to engine warning output. In FIG. 4, it is determined in S20 whether or not the engine stop flag is set. If it is not set, “end” is reached, and the engine stop flag is set. If it is set, the engine stop alarm output is set in S21. When this engine stop alarm output is set, the engine stop alarm signal A is output from the control unit 44, and the horn 56 sounds.
[0030]
FIG. 5 shows a control flowchart according to the present embodiment. In FIG. 5, it is determined whether or not the engine stop flag is set in S30. If the engine stop flag is not set, “end” is reached. If the engine stop flag is set, the process proceeds to S31. In S31, it is determined whether or not the previous engine stop flag has been set. If it has been set, the process proceeds to S33, and if not, the process proceeds to S32. In S32, it is determined whether the engine rotation is rotating or stopped. Since the engine stop flag is set, in any case, the engine stop alarm holding timer is set in S33 and the process proceeds to S34. .
[0031]
In S34, it is determined whether or not the engine stop alarm holding timer is 0. If the timer is not 0, the engine stop alarm signal A is output and the horn 56 is sounded in S35, and if the engine stop alarm holding timer is 0. Proceed to S36. That is, the horn 56 is sounded for the time set by the engine stop alarm holding timer. In S36, it is determined whether the engine rotation is rotating or stopped. If the engine rotation is stopped, the process reaches “END”. If the engine rotation is rotating, the engine stop alarm signal A is determined in S37. Is output to cause the horn 56 to ring. That is, the horn 56 is sounded during engine rotation.
[0032]
【The invention's effect】
According to the first aspect of the invention, the engine is stopped based on the operation of the engine stop means, and the warning sound is emitted by the warning means. Therefore, it is possible to avoid inadvertently restarting the engine.
[0033]
According to the second aspect of the present invention, since the alarm means is activated during the time when the engine stop signal is output, the issued alarm does not stop instantaneously. There is no risk of missing, and it can be determined why the engine has stopped.
[0034]
According to the invention of claim 3, since the engine speed detecting means for detecting the engine speed is provided and the alarm means is operated until the engine speed stops after the operation of the engine stop means, in general, The engine output shaft rotates slightly with inertia even after the engine stops, and the alarm continues to operate during that time, so there is no risk that the surrounding people will miss the alarm, and it is possible to determine why the engine has stopped .
[0035]
According to the invention described in claim 4, since the operation of the alarm unit is stopped after the time set by the time measuring unit has elapsed, there is no possibility that the surrounding people will miss the alarm for the time during which the alarm is continuously generated. It can be arbitrarily set at an appropriate time.
[Brief description of the drawings]
FIG. 1 is a side view of a combine to which the present invention is applied.
FIG. 2 is a control block diagram in the present embodiment.
FIG. 3 is a diagram showing a control flowchart regarding engine stop according to the present embodiment;
FIG. 4 is a diagram showing a control flowchart of the present embodiment.
FIG. 5 is a diagram showing a control flowchart relating to an engine stop alarm according to the present embodiment.
[Explanation of symbols]
10 Combine 38 Engine stop switch (Engine stop means)
42 P terminal (engine speed detection means)
44 Control Unit 45 Waste Wall Sensor 46 Feed Chain Clogging Sensor 47 籾 Overflow Sensor 48 Pretreatment Clogging Sensor 50 Timer (Timekeeping Means)
52 Engine stop circuit 54 Engine stop solenoid 56 Horn (alarm means)
A Engine stop warning signal S Engine stop signal

Claims (4)

An engine, a threshing unit that receives power from the engine and threshs the cereal while being conveyed by a feed chain, an engine stop unit that outputs an engine stop signal based on an operation, and operates based on the engine stop signal. in the engine stop control system of the mobile agricultural machine provided with an engine stop circuit that outputs a cutoff signal for stopping the engine,
The engine stop means is disposed on a rail cover that covers the outer side of the rail that sandwiches the cereal with the feed chain,
Alarm means for notifying the output of the engine stop signal by an alarm sound ,
To stop the engine based on the operation of the engine stopping unit emits an alarm sound by the alarm means,
An engine stop control device for a mobile agricultural machine. Activating the alarm means for a time during which the engine stop signal is output;
The engine stop control device for a mobile agricultural machine according to claim 1. An engine speed detecting means for detecting the engine speed, and operating the alarm means until the engine speed stops after the operation of the engine stop means;
The engine stop control device for a mobile agricultural machine according to claim 1. A timer means, and after the operation of the engine stop means, the operation of the alarm means is stopped after a time set by the timer means,
The engine stop control device for a mobile agricultural machine according to claim 1.

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