JP2585275Y2 - Emergency engine stop control device for mobile harvester - Google Patents

Description

[Detailed description of the invention]

[0001]

[Industrial application field] The present invention relates to the transfer of combine
The present invention relates to an engine stop control device for a harvester , and more particularly, to an engine stop control device that maintains an emergency engine stop.

[0002]

2. Description of the Related Art A conventional engine stop device for a combine is provided with an engine stop switch for stopping the engine when a waste straw is clogged, stopping the engine when a paddy tank overflows, or operating the hand of the combine body. An engine stop output such as driving of the engine fuel cut solenoid is output only during the ON operation.

[0003]

[Problem to be Solved by the Invention] However, in an emergency such as when the operator thrusts his hand into the threshing feed chain, such as during the threshing operation of the combine, the engine stop switch arranged on the side of the threshing unit is kept pressed. Maintaining engine shutdown was a major challenge. in this way,
Conventionally, there has been a problem that the engine stop switch must be kept ON when it is desired to maintain the engine stop in an emergency or in an abnormal situation.

[0004] Even when the engine is stopped by a toggle switch with an improved point of keeping the switch pressed, the stop switch that has been turned on may be turned off in an emergency erroneous operation or recovery processing operation of an abnormal phenomenon, and the engine stop is maintained. There was a problem that complete safety in an emergency could not be achieved.

[0005] It is an object of the present invention to provide an emergency engine stop device in a mobile harvesting machine which has solved the above-mentioned problems.

[0006]

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned circumstances, and has an engine stop means (13) for outputting an engine stop signal, and an engine stop means for detecting a faulty work state. an automatic stop means for actuating (13) (11, 12), and emergency stop means for actuating said engine stopping means is operated in an emergency (13) (6), in the mobile harvester comprising wherein the Emergency stop means (6)
Is a stop slot for threshing by hand provided on the side of the threshing unit.
The engine stop means (1) is operated based on the operation of the emergency stop means (6), and is operated after the emergency stop means (6) is released until the reset means (5) is operated.
3) After detecting the work failure state by the holding means (15) which continues to operate and the automatic stopping means (11, 12),
When the detection state is released, the operation of the engine stopping means (13) can be performed without the need to operate the reset means (5).
Control means (16) for canceling the operation .

[0007]

Based on the above configuration, when the engine is controlled to stop in response to a detection signal from an automatic stop means, for example, a paddle tank overflow detection switch (11) or a waste straw clogging detection switch (12), an engine stop signal is output. During this time, engine stop means, for example, an engine stop fuel cut solenoid (13) is driven to stop the engine.

In addition, for threshing by hand at the threshing section, etc.
If the engine stop switch (6) as an emergency stop means for stopping the engine more urgently is turned on at least once, then, even if the engine stop switch (6) is switched from ON to OFF, the holding means ( 15) continuously outputs a stop signal of engine stop means such as the fuel cut solenoid (13), and the engine is maintained in a stopped state. On the other hand, when the automatic stop means (11, 12) detects a defective work state, the engine stop means (13) is operated to stop the engine. Upon release, the operation of the engine stop means (13) is automatically released by the control means (16) without requiring the switching operation of the reset means (5).

[0009]

[Effect of the invention] The present invention is applicable when engine stop control is necessary at the time of clogging of waste straw or overflow of paddy tank.
The engine stop means (13) is operated only when the straw is clogged or in a defective state such as a time when the signal of the paddy tank overflow is output, and the engine stop control is performed. When the overflow or the like is released, reset by the reset means (5) is performed.
The operation of the engine stop means (13) is released without performing the setting operation . The emergency stop means (6) is provided for threshing.
Since the stop switch is provided on the side of the unit,
Hands pinched by threshing feed chain during manual threshing
Emergency such as in that, O also the emergency stop means (6) at one time
If N, then either the engine stop means (6) is ON
To maintain the ene <br/> Jin stop controlled by Luo cut behalf be holding means OFF (15), has the effect that it is safer.

Reference numerals in parentheses refer to the drawings, but do not limit the configuration of the present invention.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to the drawings.

FIG. 1 is a plan view of a combine to which the present invention is applied. In FIG. 1, reference numeral 1 denotes a continuously variable transmission lever for performing a shift operation of a combine, 2 denotes a pre-processing unit that performs pre-processing such as mowing, and 3 denotes an operation panel. Reference numeral 5 denotes a starter switch for starting the engine, and 6 denotes a threshing operation in which a worker is not seated in a driver's seat and is located on a side of the combine and is handled by hand.
An engine stop switch 7 for controlling the vehicle when performing a work is a running operation switch. Reference numeral 9 denotes a threshing machine clutch lever, and reference numeral 10 denotes an overflow valve for overflowing a waste straw. An overflow detection switch 11 detects an overflow state of the paddy tank.
Reference numeral 2 denotes a waste straw clogging detection switch that detects a state where the waste straw is clogged.

FIG. 2 is a block diagram for explaining the configuration of the embodiment of the present invention. In the figure _, 5 is a starter for starting the engine, 6 is a switch for emergency stop of the engine for threshing by hand provided on the side of the threshing section , 7 is a traveling operation switch,
9A is a clutch switch of the working machine. Reference numeral 11 denotes an overflow detection switch for detecting overflow of the paddy tank, and reference numeral 12 denotes a clogging detection switch for waste straw. 1
Reference numeral 3 denotes a fuel cut solenoid which constitutes an engine stop means. Reference numeral 15 denotes a holding means incorporated in a control unit (control means) 16 for controlling the combine. The fuel cut solenoid 15 is provided when the engine emergency stop switch 6 is operated. The stop signal is continuously output to the solenoid 13.

The engine start switch 5 includes:
A voltage of 12 V is applied, and a start signal is input to the control unit 16 via the connection a when the switch is turned on. Engine stop switch 6, the terminal S ₁ side is ground, via a signal line b of the terminal S ₂ side, the signal of the ON of the engine stop switch 6, the control unit 16
To enter. Travel operation switch 7A is provided on the travel operation means within 7 provided in combined side shown in FIG. 1, and the ground terminal S ₃ side G, via a signal line c of the terminal S ₄ side, traveling operation switch The ON signal of 7A is transmitted to the control unit 16. Overflow detection switch 11
But when it detects that the rice tank overflowed via the signal line d of the terminal S ₆ side corresponding to the terminal S ₅ being ground, ON signal is input to the control unit 16. Also, a waste straw clogging detection switch 1
Clutch switch 9A of 2 and the working machine, respectively ground terminal S _7, S ₉ side, via a signal line e, f,
An ON signal is input to the control unit 16 .

In FIG. 2, the engine stop switch 6 is not limited to a push button switch, but may be a toggle switch or a momentary push button switch.

As described above, the control unit 16 processes the information from the start switch 5, the engine stop switch 6, the overflow detection switch 11, the exhaust stir clogging detection switch 12, and the clutch switch 9A of the work machine, and processes the information for stopping the engine. The fuel cut solenoid 13 is controlled.

With reference to FIG. 3, a description will be given of control at the time of emergency engine stop, in which the engine stop signal is output until the engine stop switch is reached even if the engine stop switch 6 is turned ON at least once.

In step S1, the routine is started with "emergency engine stop", and in step S2, reset processing of an engine stop flag is executed to bring it to an initial state. Next, in step S3, whether the engine stop switch 6 is ON or
If it is OFF, then step S5 is skipped and it is determined in step S6 whether the engine stop flag is set or reset. If the engine stop switch 6 is ON in step S3, the engine flag is set in step S5. The processing is executed. Next, when it is determined in step S6 that the engine flag is set, an ON process of the engine stop fuel cut solenoid 13 in step S7 is executed. If it is determined in step S6 that the engine stop flag has been reset, the process proceeds to step S9, in which the engine stop fuel cut solenoid 13 is turned off. Then, after steps S6 and S7, the routine returns to the determination of whether or not the engine stop switch 6 is ON in step S3, and the routine is repeated.

Thus, once the engine stop switch 6 is turned on and the engine stop solenoid 13 is energized, the engine stop flag is maintained in the set state even if the engine stop switch 6 is turned off. The solenoid 13 for stopping the engine continues to be excited. And
The engine stop flag is reset by a switching signal from ON to OFF of the starter switch 5 shown in FIG.
The excitation of the engine stop solenoid 13 is released.

Next, referring to the flowchart of FIG.
The engine stop control at the time of the paddy tank overflow and the clogging of the waste straw will be described.

In step S11, only when the work machine clutch switch 9A is ON, that is, when the combine is in the working state, the engine stop control routine is executed. Then, in step S12, it is determined whether the paddy tank overflow detection switch 11 is ON or OFF. If it is determined that the paddy tank overflow detection switch 11 is ON, the process proceeds to step S15 and the engine stop solenoid 13
Is turned ON. Step S12
If it is determined that the paddy tank overflow detection switch 11 is OFF, it is determined in step S13 whether the waste straw clogging detection switch 12 is OFF or ON. If it is determined that the waste straw clogging detection switch 12 is OFF, the process proceeds to step S1.
Then, the process proceeds to step S6 where the engine stop solenoid 13 is turned off. When it is determined that the exhaust straw clogging detection switch 12 is ON, the process proceeds to step S15, and a process of turning ON the engine stop solenoid 13 is executed. When step S15 and step S16 are completed, the routine of step S12 and subsequent steps is repeated.

Thus, when the rice in the paddy tank overflows and the overflow detecting switch 11 is turned on, the solenoid 13 for stopping the engine is turned on. Is turned on, the engine stop solenoid 13 is turned on. Then, when the paddy in the paddy tank is flown into the paddy bags and the overflow detection switch 11 is turned off, or the clogging of the waste straw chain is removed and the waste straw clogging detection switch 12 is turned off, no reset operation is performed.
The engine stop solenoid 13 is turned off.

In the above embodiment, when the engine stop fuel cut solenoid 13 is turned on and excited, the engine is stopped, that is, the starter switch 5 is in a key-on state and the fuel cut solenoid 13 is maintained in an off state. This is a device for stopping the engine when the fuel cut solenoid 13 for stopping the engine is turned off and de-energized, that is, a starter switch 5.
Key on state, the fuel cut solenoid 13
Of course, the same can be applied to a device that keeps exciting. The move has been described combine equipped with a diesel engine, equipped with a gasoline engine
The same can be applied to a harvester, in which case the engine stopping means is a means for cutting off the current to the plug.

[Brief description of the drawings]

FIG. 1 is a plan view showing a combine to which the present invention can be applied.

FIG. 2 is a block diagram showing an embodiment of the present invention.

FIG. 3 is a flowchart showing a control operation when the emergency engine is stopped according to the embodiment of the present invention shown in FIG. 2;

FIG. 4 is a flowchart showing a control operation when the clogged engine is stopped according to the embodiment of the present invention shown in FIG. 2;

[Explanation of symbols]

 6 Emergency stop means (engine stop switch) 11, 12 Automatic stop means (11 paddy tank overflow detection switch) (12 waste straw clogging detection switch) 13 engine stop means (fuel cut solenoid) 15 holding means 16 control unit

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁶ , DB name) F02D 29/00 A01D 69/00 302 F16P 7/02

Claims (1)

(57) [Scope of request for utility model registration] 1. A and engine stop means for outputting an engine stop signal, an automatic stopping means for actuating said engine stopping means detects the working failure state, an emergency stop for operating said engine stopping means is operated in an emergency Means in the mobile harvester , wherein the emergency stop means is a hand-operated removal provided on the side of the threshing unit.
A stop switch for grain work, which operates based on the operation of the emergency stop means, and until the reset means is operated, a holding means that keeps operating the engine stop means even after the operation of the emergency stop means is released; Control means for canceling the operation of the engine stop means without the need to operate the reset means when the detection state is released after the operation failure state is detected by the automatic stop means. An emergency engine stop control device for a mobile harvester .