JP2005087102A - Alarm system in combine harvester - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an alarm system in a combine harvester, capable of precisely informing an operator of the decrease of the number of revolution of an engine. <P>SOLUTION: The alarm system for giving alarm when the number of the revolution of the engine is decreased to the prescribed alarm standard number of the revolution set in a low-revolution threshing zone A, or the number lower than the alarm standard number of the revolution, by setting a range H of the numbers of the revolution of the engine when carrying out a threshing operation by bringing the low revolution threshing zone A at a low revolution side near to a high revolution threshing zone B at a high revolution side, is installed, and an alarm-stopping means for stopping the alarm is installed in the alarm system. In another aspect, the first alarm standard number of the revolution in the low revolution threshing zone A, and the second alarm standard number of the revolution lower than the first alarm standard number of the revolution are set as the alarm standard numbers of the revolution, and the alarm is given at two points. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

  The present invention relates to an alarm system that notifies a decrease in engine speed in a combine.

An alarm system that limits the range (effective range) of engine speed when performing conventional threshing work, and generates an alarm when the engine speed decreases and falls below or below the effective range based on the engine speed data. The combine which provided is known.
JP-A-11-206229

  On the other hand, within the above-mentioned effective range, a high rotation threshing zone on the high rotation side that is generally within the range of engine rotation speed when performing normal threshing operations such as rice and wheat, and an engine when performing threshing operations such as seeds A low-rotation threshing zone on the low-rotation side that is the range of the rotational speed is defined.In this case, during normal threshing work, even if the engine rotational speed is within the effective range, it is out of the high-rotation threshing zone, Even when shifting to the low rotation threshing zone, it cannot be said that the rotation speed of the engine is maintained at a rotation speed suitable for threshing work (normal threshing work).

  However, since the alarm by the alarm system is generated when the engine speed is out of the effective range, the alarm is usually generated at the time of threshing work, and the engine stops due to the load at the time of threshing. There was a drawback that there was a case.

  The alarm system in the combine of the present invention for solving the above-mentioned problems has a low rotation threshing zone A on the low rotation side and a high rotation threshing zone B on the high rotation side within the range H of the engine speed when performing the threshing operation. In a combine provided with an alarm system that generates an alarm when the engine speed decreases and falls below a predetermined alarm reference speed or less than the alarm reference speed based on the engine speed data, A first feature is that a warning reference rotational speed is provided in the low-speed threshing zone A, and the warning system includes a warning stopping means for stopping the warning.

  Secondly, a low-rotation side low-rotation threshing zone A and a high-rotation-side high-rotation threshing zone B are provided adjacent to each other within the engine rotation speed range H when performing the threshing operation. Based on the combination of the low rotation threshing zone A as the alarm reference rotation speed in the combine provided with an alarm system that generates an alarm when the engine rotation speed decreases and falls below or below the predetermined alarm reference rotation speed. A first alarm reference speed and a second alarm reference speed less than the first alarm reference speed are provided.

  Thirdly, the alarm system is characterized in that it includes automatic initialization means for initializing the alarm system to the state at the start of operation when the engine speed increases and shifts into the high rotation threshing zone A.

  According to the structure of the present invention configured as described above, normal threshing work such as rice and wheat is normal threshing work performed while maintaining the engine speed in the high rotation threshing zone. Sometimes, when a high load or the like causes the engine rotation speed to fall below the rotation speed in the high rotation threshing zone that is within the appropriate rotation speed range and reaches a predetermined rotation speed in the low rotation threshing zone, an alarm is generated, There is an effect that the operator can recognize a decrease in engine rotation (high load or the like) by an alarm.

  An alarm is generated while the engine speed is in the low-speed threshing zone, and seed threshing work is a low-speed threshing work that is performed while maintaining the engine speed in the low-speed threshing zone. Further, the engine speed can be adjusted during low-speed threshing work. If an alarm is generated during the low rotation threshing operation, the alarm can be easily stopped by the alarm stop means.

  In addition, by providing the first alarm reference speed and the second alarm reference speed as the alarm reference speed, the operator can properly set the engine speed during normal threshing work by an alarm based on the first alarm reference speed. It can be easily recognized that the engine speed has fallen below and the engine speed has entered the low-speed threshing zone, and the second alarm reference rotational speed is set to the minimum rotational speed of the low-speed threshing zone or the minimum rotational speed. By setting the rotation speed to be less than the rotation speed in the low rotation threshing zone where the rotation speed of the engine is within the appropriate rotation speed range during the low rotation threshing operation, the warning based on the second warning reference rotation speed is used. The effect is that it can be easily recognized.

  When the engine speed increases and the alarm system shifts to the high speed zone, the alarm system is provided with automatic initialization means that initializes the alarm system to the state at the start of operation, so that the engine speed is When returning to the range, the alarm system in the alarm notification state is automatically initialized, so that the alarm system is ready for automatic alarm again, and the engine rotation is not performed manually by the operator without resetting the alarm system at the time of alarm. The work can be continued only by increasing the number.

  FIG. 1 is a side view of a combine equipped with the alarm system of the present invention. In the combine, the machine body 1 is supported by the traveling device 2 as in the prior art, and the pre-processing unit 3 is attached to the front of the machine body 1 so as to be swingable up and down. A threshing unit 4 is provided on the left rear side of the machine body 1, and a driver's seat 6 is provided on the upper right side of the machine body 1.

  As shown in FIG. 2, an operation unit 7 is provided over the front and side of the seat 5, and an instrument panel (instrument panel) 9 provided with various indicators such as a battery and a water temperature is provided in the operation unit 7. Is provided.

  The above combine lowers the pretreatment unit 3 in the field as in the prior art, and operates the pretreatment unit 3 while the vehicle 1 is running, so that the pretreatment unit 3 cuts off the cereal, and the threshing unit 4 and the pretreatment unit 3, the handling depth is adjusted by a conveying body (not shown) provided between the cereals 3 and the cereals are conveyed to the threshing unit 4 and threshed by the threshing unit 4.

  On the other hand, the combine is driven by the engine in addition to traveling, as in the conventional case, so that the pretreatment unit 3 and the threshing unit 4 are driven. It is necessary to set the number of revolutions of the engine to a predetermined set value or more and a range corresponding to the type of cereal and grain to be threshed. This is because if the engine speed is too high or too low depending on the type of grain to be threshed or the type of grain, the grain may be damaged or threshing may be poor.

  And the combine of this embodiment is the low rotation threshing zone of the low rotation side and the high rotation side where the threshing rotation range (effective range) which maintains the rotation speed of the engine when performing the threshing operation is adjacent. It consists of a high-speed threshing zone, and normal threshing work such as rice and wheat (normal threshing work) maintains the engine speed in the high-speed threshing zone (rice husk zone) and threshing seeds etc. The work is performed while maintaining the engine speed in a low-speed threshing zone (seed zone).

  Therefore, in this embodiment, as shown in FIG. 2, the instrument panel 9 is provided with an engine tachometer 13 in which the seed zone A and the rice wheat zone B are shown, and an operator in the driver's seat 6 The engine is configured such that the needle 13a of the tachometer 13 indicating the engine speed is positioned in the seed zone A or the rice wheat zone B. The threshing work according to the kind of threshing can be performed by adjusting the number of rotations. A range obtained by combining the seed zone A and the rice wheat zone B is an effective range H.

  Further, the combine of the present embodiment has a warning when the engine speed is reduced to be less than or less than a predetermined alarm reference speed, and when the engine speed is lower than the rice wheat zone B and lower than the seed zone A. The alarm system that alerts the decrease in the engine speed during normal threshing work and the decrease in the engine speed during low-speed threshing work is installed. Accordingly, it is possible to easily recognize a decrease in the engine speed and the like, and to deal with the situation smoothly.

  The alarm system includes a microcomputer unit (not shown), a program for causing the microcomputer unit to function as an alarm system, a buzzer (not shown), a warning lamp 14 provided on the instrument panel 9, and a rotation sensor (not shown) for detecting the engine speed. Not). The program is stored in advance in the memory on the microcomputer unit side. A rotation sensor is connected to the input side of the microcomputer unit, and a buzzer and a warning lamp 14 are connected to the output side of the microcomputer unit. Two alarm reference rotation speeds for generating an alarm, the first alarm reference rotation speed and the second alarm reference rotation speed, are preset and stored in the memory in advance.

  As shown in FIG. 3 (a), the first alarm reference rotational speed is such that the needle 13a of the engine tachometer 13 does not contact the rice wheat zone B (the boundary between the seed zone A and the rice wheat zone B) at all. As shown in FIG. 3 (b), the engine speed when fully in the seed zone A and the second alarm reference speed are set so that the needle 13a of the engine tachometer 13 is in the seed zone A ( The engine rotation speed is set for each state in which it completely enters the area below the seed zone without contacting the boundary between the seed zone A and the zone below the seed zone.

  As described above, this alarm system operates according to a flow described later based on the above program, monitors the engine speed from the rotation sensor, the engine speed decreases, and the engine speed becomes the first alarm reference speed or less. And when the engine speed is lower than the second alarm reference engine speed, the buzzer is sounded as an alarm and the warning lamp 14 is turned on, so that the engine speed falls below the wheat field B or the seed zone A. This is notified to the worker.

  In this alarm system, as will be described later, a return rotational speed for automatically initializing the system in accordance with the rotational speed of the engine is also preset and stored in the memory. As shown in (c), the engine speed when the needle 13a of the engine tachometer 13 is located in the seed zone A and is in contact with the boundary between the seed zone A and the rice wheat zone B is set. Yes.

  In addition, as will be described later, this alarm system is configured so that an alarm based on the first alarm reference rotation speed (an alarm when the engine rotation speed falls below the rice wheat zone B) is generated. It is also possible to stop this alarm by pressing a horn switch provided at 9.

  Next, the operation flow (alarm control) of the alarm system based on the above-mentioned program will be described in detail. As shown in the flowchart of FIG. 4, the alarm system (alarm control) first checks in step S1 whether or not the engine is rotating based on information from the rotation sensor. Proceeding to S2, the detected engine speed is compared with the second alarm reference speed. When the engine speed is less than the second alarm reference speed, that is, “engine speed <second alarm reference speed”, the process proceeds to step S3, the buzzer is continuously sounded, and the warning lamp 14 is continuously operated. Turn on to generate a second alarm.

  On the other hand, in step S2, if the engine speed is equal to or higher than the second alarm reference speed, that is, "engine speed ≥ second alarm reference speed", the process proceeds to step S4, and the detected engine speed and return speed are determined. Compare the number. If the engine speed exceeds the return speed, that is, if “engine speed> reset speed”, the process proceeds to step S5 to reset the intermittent alarm flag (set as described later) and to step S6. Proceed to

  Thereafter, in step S6, an alarm stop flag (set as described later) is reset, and the process proceeds to step S7, where the buzzer is stopped and the warning lamp 14 is continuously turned off (lighting is stopped). Stop and return.

  If it is determined in step S4 that the engine speed is equal to or lower than the return speed, that is, “engine speed ≦ reset speed”, the process proceeds to step S8, and the detected engine speed is compared with the first alarm reference speed. To do. If the engine speed is equal to or lower than the first alarm reference speed, that is, “engine speed ≦ first alarm reference speed”, the process proceeds to step S9, and the above-described intermittent alarm flag is set. Then, the process proceeds from step S9 to step S10, and the intermittent alarm flag is checked.

  In step S8, if the engine speed exceeds the first alarm reference speed, that is, if “first alarm reference speed <engine speed ≦ reset speed”, step S9 is skipped and step S8 is started. Proceed directly to step S10. In step S10, if the intermittent alarm flag is not set (reset), the process proceeds to step S7, the alarm is stopped as described above, and if the intermittent alarm flag is set, the process proceeds to step S11. Check the horn switch.

  If the horn switch is turned on in step S11, the process proceeds to step S12, the alarm stop flag is set, and the process proceeds to step S13 to check the alarm stop flag. If the horn switch is off in step S11, step S12 is skipped and the process proceeds directly to step S13.

  If the alarm stop flag is set in step S13, the process proceeds to step S7 to stop the alarm as described above. If the alarm stop flag is not set (reset), the buzzer sounds intermittently. And the warning lamp 14 blinks to generate a first alarm.

  According to the above flow, when the engine speed is less than the second alarm reference speed during engine rotation, and the needle 13a completely enters the area below the seed zone in the engine tachometer 13, the continuous alarm sound is emitted, The warning lamp 14 is continuously turned on to generate a second alarm, and it is informed that the engine speed has fallen below the seed zone.

  When the engine speed is less than the seed zone, normal threshing work (normal threshing work) such as rice and wheat performed while maintaining the engine speed in the rice wheat zone B and the engine speed within the seed zone A are performed. In any of the low-speed threshing operations in which the threshing work such as seeds is carried out while maintaining a low value, it is below the appropriate rotational speed range (the rotational speed in the rice wheat zone B or the rotational speed in the seed zone A), that is, the effective range It will be below H.

  This alerts the second alarm that the engine speed has fallen to a speed that is not suitable for any threshing work (not suitable for threshing work), and the operator falls below the effective range of engine speed (high load) Etc.), and measures such as increasing the engine speed can be performed quickly and smoothly.

  On the other hand, even if the engine speed is equal to or higher than the second alarm reference speed, if the engine speed is equal to or lower than the return speed and the needle 13a is located in the seed zone A in the engine tachometer 13, the engine When the needle 13a of the tachometer 13 completely enters the region of the seed zone A and the engine speed is equal to or lower than the first alarm reference speed, the intermittent alarm flag is set and the intermittent alarm sound is generated unless the horn switch is pressed. Blowing and flashing of the warning lamp 14 are performed to generate a first alarm, and it is notified that the engine speed is in an area below the rice wheat zone B.

  When the engine speed is in the seed zone A, the normal threshing operation (maintaining the engine speed in the rice wheat zone B) is less than the appropriate rotational speed range (speed in the rice wheat zone B). That is, it is notified as described above that the engine speed has fallen to a speed that is not suitable for normal threshing work, and the alarm causes the operator to reduce the engine speed (such as high load) relative to normal threshing work. It can be recognized, and measures such as increasing the engine speed can be performed quickly and smoothly.

  Since the first alarm (intermittent buzzer sound and blinking of the warning light 14) and the second alarm (continuous buzzer sound and continuous lighting of the warning light 14) are different as described above, the engine is particularly affected by different sounding sounds. It is possible to determine the state of decrease in the rotational speed. Specifically, it is easily determined whether the engine rotational speed has fallen below the rice wheat zone B or the seed zone A (effective range H) due to the difference in warning sound. Zone maintenance can be performed by this alarm system.

  However, the operator may intentionally change the engine rotational speed to the rotational speed in the seed zone A in order to perform the threshing operation (low rotation threshing operation) of the seeds, etc. The alarm can be stopped by pressing the switch. That is, alarm stop means for stopping the first alarm is configured by steps S11 to S13 and the horn switch, and the low alarm threshing operation can be performed by arbitrarily stopping the first alarm by the operator. When the engine speed is intentionally changed to the speed in the seed zone A, the operator can recognize that the target speed range has been reached by the first alarm.

  Once the first alarm or the second alarm is issued, the engine speed exceeds the return speed, and the alarm continues until part of the needle 13a enters the region of the rice wheat zone B in the engine tachometer 13. When the engine speed exceeds the return speed by steps S4 to S7, and part of the needle 13a enters the region of rice wheat zone B in the engine tachometer 13, the intermittent alarm flag and the alarm stop flag are reset. The alarm is stopped and the system is initialized (reset).

  That is, steps S4 to S7 constitute an automatic initialization means that automatically initializes the alarm system to the state at the start of operation when the decreasing engine speed increases and moves into the high rotation threshing zone A. Then, the alarm system is in a state where an automatic alarm can be performed again, and the threshing operation can be continued only by increasing the engine speed without the operator manually resetting the alarm system at the time of alarm.

  The first alarm reference rotation speed, the second alarm reference rotation speed, and the return rotation speed are input and stored in the memory when the combine is assembled. For this reason, the said rotation speed is set and memorize | stored for every combine, and the alarm precision and alarm reliability for every combine are high. Furthermore, when the rotation speed is used again, it can be easily called from the memory and easily reused.

  The alarm system is configured to generate an alarm when the engine speed is equal to or less than the first alarm reference speed and less than the second alarm reference speed, but less than or less than the first alarm reference speed, or An alarm may be generated when the rotation speed is less than or equal to the second alarm reference rotation speed, and the automatic reset may be set to the return rotation speed or more. Furthermore, you may comprise the said alarm system only with hardware.

It is a side view of the combine which employ | adopted this alarm system. It is a top view of a driver's seat part. (A) is the display state of the engine tachometer at the first alarm reference speed, (b) is the display state of the engine tachometer at the second alarm reference speed, and (c) is the engine tachometer at the return speed. The display state of is shown. It is an action | operation flowchart figure of an alarm system.

Explanation of symbols

A seed zone (low rotation threshing zone)
B Rice field zone (high rotation threshing zone)
H Effective range (range of engine speed)

Claims (3)

  Within the range (H) of the engine speed when threshing is performed, a low rotation threshing zone (A) on the low rotation side and a high rotation threshing zone (B) on the high rotation side are provided adjacent to each other to rotate the engine Based on the numerical data, in the combine provided with an alarm system that generates an alarm when the engine speed decreases and falls below the predetermined alarm reference speed or less than the alarm reference speed, the alarm reference speed is set to the low rotation threshing zone ( The alarm system in the combine provided with the alarm stop means which is provided in A) and the alarm system stops the alarm.   Within the range (H) of the engine speed when threshing is performed, a low rotation threshing zone (A) on the low rotation side and a high rotation threshing zone (B) on the high rotation side are provided adjacent to each other to rotate the engine Based on the numerical data, the low rotation threshing zone is used as the alarm reference speed in the combine provided with the alarm system that generates an alarm when the engine speed decreases and falls below the predetermined alarm reference speed or less than the alarm reference speed. The alarm system in the combine which provided the 1st warning reference | standard rotation speed in (A), and the 2nd warning reference | standard rotation speed less than this 1st warning reference | standard rotation speed. 3. The combine according to claim 1, wherein the alarm system includes an automatic initialization unit that initializes the alarm system to a state at the start of operation when the engine speed increases and shifts into the high rotation threshing zone (A). Alarm system.

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