JP2003328798A - Engine stop control device of mobile agricultural machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To sound a horn and prevent to restart an engine carelessly when the engine stops by the operation of the engine stop switch. <P>SOLUTION: In the engine stop control device, for instance, if an operator pushes the engine stop switch 38 during manual threshing work, the engine stop signal S is outputted from a control part 44, and the engine stops based on the engine stop signal S. Additionally, if the engine stop signal S is outputted, the engine stop alarm signal A to repot that the engine stop signal S is outputted is outputted from the control part 44, and the horn 56 sounds to emit the alarm by the engine stop alarm signal A. A surrounding person recognizes that the engine stops as the operator pushes the engine stop switch 38 with the alarm. <P>COPYRIGHT: (C)2004,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field 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]

2. Description of the Related Art Conventionally, in a mobile agricultural machine such as a combine, in order to forcibly stop the engine when the waste is clogged, when the paddy tank overflows, or when hand threshing work is performed on the side of the combine body. An engine stop switch operated by a worker was provided. The engine stop switch is installed at the position closest to the operator, that is, the grain culm transport chain, for quick stop operation from a safety point of view, for example, during manual threshing work. According to the work content, the rail covers are arranged in various places on the combine body, such as being provided in the vicinity of the clamping start position of the rail cover. By operating the engine stop switch, the engine fuel cut solenoid is operated and the engine stop signal is output.

[0003]

However, conventionally, when a worker feels necessary, for example, during manual threshing work of a combine, the engine can be stopped by pressing a nearby engine stop switch. Although it was possible, even if the hand-operated worker pushed the switch, the driver could not recognize why the engine stopped, and the engine might be restarted.

The present invention has been made to solve the above problems, and an object of the present invention is to give an alarm when the engine is stopped by operating the engine stopping means and to restart the engine carelessly. An object of the present invention is to provide an engine stop control device for a mobile agricultural machine that is prevented from being operated.

[0005]

In order to achieve the above object, the invention according to claim 1 is the engine stop means (38) for outputting an engine stop signal (S) based on an operation, and the engine stop signal (S). ), An engine stop circuit (52) for outputting a cutoff signal (C) for operating the engine to stop the engine, and an output of the engine stop signal (S) are notified in an engine stop control device for a mobile agricultural machine. A warning means (56) for stopping the engine based on the operation of the engine stopping means (38),
A warning is issued by the warning means (56).

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 activated during the time when the engine stop signal (S) is output. Characterize.

According to a third aspect of the present invention, in the engine stop control device for a mobile agricultural machine according to the first aspect, there is provided engine speed detecting means (42) for detecting an engine speed,
After the operation of the engine stop means (38), the alarm means (56) is operated until the engine speed stops.

According to a fourth aspect of the present invention, in the engine stop control device for a mobile agricultural machine according to the first aspect, the timekeeping means (5
0), and after the operation of the engine stop means (38),
It is characterized in that the operation of the alarm means (56) is stopped after the time set by the time measuring means (50) has elapsed.

[Operation] According to the present invention, the warning means (56) for notifying the output of the engine stop signal (S) is provided, and the engine is stopped based on the operation of the engine stop means (38), and the warning means is provided. By issuing the alarm by (56), for example, when the operator operates the engine stop means (38) during the hand threshing work, the engine stop signal (S) is output from the control unit (44). The engine is stopped based on the engine stop signal (S).
Further, when the engine stop signal (S) is output, the engine stop warning signal (A) for notifying that the engine stop signal (S) has been output is output from the control unit (44). The alarm signal (A) activates the alarm means (56) to issue an alarm. Due to this alarm, the operators of the surroundings can see the engine stopping means (3
It is recognized that the engine has stopped by operating 8).

The above-mentioned reference numerals in parentheses are for comparing the drawings and do not limit the present invention in any way.

[0011]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a side view of a combine to which the present invention is applied. In FIG. 1, the combine 10 has a traveling machine body 14 supported by a pair of left and right crawler traveling devices 12, 12. A preprocessing unit 16 is provided in front of the traveling body 14.
Is provided 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 pretreatment unit 16. On the left and right sides behind the driver's seat 18, a threshing unit 20 for threshing the culms harvested by the pretreatment unit 16 and a grain for temporarily storing the grain threshed by the threshing unit 20. Each tank 22 is arranged. A vertical cylinder 30a is provided upright from the bottom of the grain tank 22, and an auger discharge cylinder 30 is supported on the upper part of the vertical cylinder 30a so as to be up and down and rotatable.
Then, the grain culms harvested by the pretreatment unit 16 are sandwiched by the feed chain 24 and the rails 26 while being handled by the handling room 2
8 is supplied.

In the driver's seat 18, a main gear shift lever 32 and an auxiliary gear shift lever 33 for performing a traveling gear shift of the traveling machine body 14 via a continuously variable transmission (not shown), a turning operation of the machine body 14, and a preprocessing section 16 are provided. A multi-steering lever 34 for raising and lowering the vehicle is arranged.

Further, a rail cover 36 is provided so as to cover the outside of the rail 26, and an engine stop switch 38 as an engine stop means is arranged at the front part 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 for detecting a signal output from an alternator (alternator). 42 are provided.

By the way, for example, when rice or wheat is harvested in a paddy field or a field by the combine 10, there may be left uncut portions at the corners of the field due to the turning radius of the traveling vehicle body 14. A worker carries out harvesting by hand cutting, and the harvested rice and wheat are subjected to so-called manual threshing work in which the cover covering the handling chamber 28 is opened and the harvested product is manually fed to the threshing machine. So, for hand operators,
If some inconvenience occurs during work and it is necessary, it may be desired to forcibly stop the engine. 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 signal S operates the engine stop circuit 52 to stop the engine. It has become.

In the present embodiment, 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 the alarm means 56 issues an alarm.

In FIG. 2, a control unit 4 including a microcomputer
On the input side of 4, an engine stop switch 38 for outputting an engine stop signal S from the control section 44 based on an operator's ON operation, an exhaust wall sensor 45 for detecting exhaust wall clogging, and a feed for detecting feed chain clogging are provided. Chain clogging sensor 46, paddy overflow sensor 47 for detecting paddy overflow from grain tank 22, pretreatment unit 16
A pretreatment clogging sensor 48 and the like for detecting clogging during transportation of grain culms in the above are connected. A signal from the P terminal 42 for detecting the engine speed is input to the control unit 44, and a timer 50 is built in.

Further, an engine stop solenoid 54 is connected to the output side of the control section 44 via an engine stop circuit 52. Further, a horn 56 as an alarm means is connected to the output side of the control section 44. Then, for example, when clogging of exhaust straw or clogging of feed chain is detected,
An engine stop signal S is output from the control unit 44 to the engine stop circuit 52. Due to this engine stop signal S, in the engine stop circuit 52, a current flows through the coil 52a to switch the contact 52b, and the cutoff signal C stops the engine. The excitation of the solenoid 54 is turned off. The non-excitation of the solenoid 54 cuts off the fuel supply from, for example, the fuel injection valve and stops the engine.

Further, for example, when the operator pushes the engine stop switch 38 during the manual threshing work, the engine stop signal S is output from the control section 44 to the engine stop circuit 52 in the same manner as described above. By S
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 stops. 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 engine stop alarm signal A causes the horn 56 to ring. Then an alarm is issued.

In the present embodiment, during the time when the engine stop signal S is being output, the engine stop warning signal A is output accordingly and the horn 56 operates.
That is, in this case, by pressing the engine stop switch 38, the engine stop warning signal A is also output while the engine stop signal S is being output, and the horn 56 continues to ring. Therefore, even if the ambient noise is a little loud, there is no risk of missing the ringing of the horn 56. Then, from this alarm, the people around can recognize that the engine is stopped by pressing the engine stop switch 38.

Further, in the present embodiment, a P terminal (engine speed detecting means) 42 for detecting the engine speed is provided, and the horn 56 is operated after the engine stop switch 38 is operated until the engine speed is stopped. I did it.

That is, in FIG. 2, the engine stop signal S is turned on by turning on the engine stop switch 38.
Is output and the engine stop warning signal A is output until the engine speed stop is detected based on the detection signal from the P terminal 42 after the engine stop signal S is output.
Is output to make the horn 56 ring. In this way, since the horn 56 sounds until the engine speed is stopped after the engine stop switch 38 is turned on, a person in the surrounding area recognizes what causes the engine to stop, as described above. be able to.

Further, in this embodiment, a timer (time measuring means) 50 is provided, and after the engine stop switch 38 is operated,
After the lapse of time set by the timer 50, the horn 56
The operation of was stopped.

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 rings until the engine speed stops. For example, when the wire connected to the P terminal 42 is broken. Etc.,
It cannot detect that the engine speed has stopped. Therefore, even in such a case, when the engine stop switch 38 is turned on so that the horn 56 can ring and the engine speed cannot be detected, the timer 50 is automatically set, and the set time is set. Horn 5 between
I made 6 ring. The timer 50 may be automatically set immediately when the engine stop switch 38 is turned on.

According to the present embodiment, when the engine stop switch 38 is turned on, the horn 56 gives an alarm. Therefore, it is easy to identify a sensor failure or disconnection, and maintenance is also easy.

FIG. 3 shows a flow chart relating to engine stop control in the present embodiment. In the figure, in S10, it is determined whether or not the engine stop flag is set. If the engine stop flag is set, the process proceeds to S16, and if the engine stop flag is not set, the process proceeds to S11. In S11, it is determined whether the engine stop switch 38 is turned on,
If it is not turned on, the operation reaches "end", and if it is turned on, the process proceeds to S12. In this S12, it is determined whether or not the engine stop switch 38 was previously turned on,
If the ON operation has been performed, the process proceeds to S14. If the ON operation has not been performed, the engine stop delay timer is set in S13 and the process proceeds to S14.

The setting of the engine stop delay timer in S13 is to prevent a malfunction due to chattering when the engine stop switch 38 is turned on, and the input of the switch is ignored for a certain time after the switch is operated. It has been delayed to do so.

Next, in S14, it is judged whether the engine stop delay timer is 0 or not, and if it is not 0, "end" is reached. If it is 0, the engine stop holding timer is set in S15 and the engine stop flag is set. Set and S
Proceed to 16. The engine stop holding timer is controlled by the control unit 4
4 is a timer for outputting an engine stop signal S from 4 to the engine stop circuit 52, and specifically, a time is set to surely stop the engine. And
In S16, it is determined whether the engine stop holding timer is 0. If the timer is 0, in S17, the engine stop delay timer, the engine stop holding timer, and the engine stop flag are reset, and the engine stop holding timer is If it is not 0, the engine stop output is set in S18.

FIG. 4 is a control flow chart relating to engine alarm output. In FIG. 4, it is determined in S20 whether the engine stop flag is set,
If it is not set, the process reaches "end", and if the engine stop flag is set, the engine stop alarm output is set in S21. When the engine stop warning output is set, the engine stop warning signal A is output from the control unit 44.
Is output and the horn 56 sounds.

FIG. 5 shows a control flowchart of the present embodiment. In FIG. 5, it is judged in S30 whether the engine stop flag is set. If the engine stop flag is not set, "end"",
If the engine stop flag is set, the process proceeds to S31. In this S31, it is determined whether or not the previous engine stop flag is set, and if it is set, S
If not set, 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. .

In this S34, it is judged whether or not the engine stop alarm holding timer is 0, and if the timer is not 0, S3
In step 5, the engine stop alarm signal A is output to cause the horn 56 to ring, and if the engine stop alarm holding timer is 0, the process proceeds to S36. That is, the horn 56 is made to ring for the time set by the engine stop warning holding timer. In addition, S36
Then, it is determined whether the engine rotation is rotating or stopped, and if the engine rotation is stopped, the “end” is reached. If the engine rotation is rotating, the engine stop warning signal A is output in S37. Sound the horn 56. That is, the horn 56 is rung while the engine is rotating.

[0032]

According to the first aspect of the present invention, the engine is stopped based on the operation of the engine stop means and the alarm is issued by the alarm means. For any reason for the driver or the like. Since it is possible to quickly determine whether the engine has stopped, it is possible to avoid accidentally restarting the engine.

According to the second aspect of the present invention, since the alarm means is activated during the time when the engine stop signal is being output, the alarm issued does not stop instantly, so that people around There is no danger of missing the alarm,
You can determine why the engine stopped.

According to the third aspect of the present invention, the engine speed detecting means for detecting the engine speed is provided, and the alarm means is operated after the engine stopping means is operated until the engine speed is stopped. Generally, the engine output shaft rotates slightly due to inertia even after the engine is stopped, and the alarm continues to operate during that time, so it is possible to judge why the engine stopped because there is no danger that others will miss the alarm. be able to.

According to the invention as set forth in claim 4, since the operation of the alarm means is stopped after the time set by the time measuring means has passed, a person in the surroundings misses the alarm for the duration of the alarm. It can be arbitrarily set at an appropriate time without fear.

[Brief description of 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 relating to engine stop of 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 warning 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 Exhaust straw sensor 46 Feed chain clogging sensor 47 Paddy overflow sensor 48 Pretreatment clogging sensor 50 timer (time keeping means) 52 Engine stop circuit 54 Engine stop solenoid 56 horn (alarm means) A engine stop warning signal S engine stop signal

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Takashi Kadowaki             Shimane Prefecture Yatsuka-gun Higashi Izumo-cho Ojiyacho 667             1 Mitsubishi agricultural machinery Co., Ltd. (72) Inventor Toshiyuki Ishibashi             Shimane Prefecture Yatsuka-gun Higashi Izumo-cho Ojiyacho 667             1 Mitsubishi agricultural machinery Co., Ltd. F-term (reference) 3G065 BA04 CA17 FA04 GA10                 3G092 AC06 BB10 CA01 DF03 EA16                       FA45 HB01X HE01Z HF20Z

Claims (4)

[Claims] 1. An engine for a mobile agricultural machine comprising: an engine stop means that outputs an engine stop signal based on an operation; and an engine stop circuit that outputs a cutoff signal that operates based on the engine stop signal to stop the engine. In the stop control device, an alarm means for notifying the output of the engine stop signal is provided, and the engine is stopped based on the operation of the engine stop means, and an alarm is issued by the alarm means. Stop control device. 2. The engine stop control device for a mobile agricultural machine according to claim 1, wherein the alarm means is activated during a time when the engine stop signal is output. 3. The engine speed detecting means for detecting an engine speed is provided, and the alarm means is operated after the engine stopping means is operated until the engine speed is stopped. Stop control device for mobile agricultural machinery. 4. The mobile agricultural machine according to claim 1, further comprising a clocking means, wherein after the engine stop means is operated, the operation of the alarm means is stopped after a lapse of time set by the clocking means. Engine stop control device.