JPH0659134B2 - Hopper-Automatic deceleration control mechanism of combine when full - Google Patents

Description

The present invention relates to an automatic deceleration control mechanism for a combine when the hopper is full, and more specifically, to a combine hopper when a hopper full alarm sensor installed in the hopper is turned on. The present invention relates to an automatic deceleration control mechanism for a combine that automatically reduces the traveling speed to a set speed.

(B) Conventional technology Conventionally, the combine controls the traveling speed during operation by operating the speed change lever to an appropriate working speed, and transfers the grain culm cut by the pretreatment section in front of the machine to the threshing section by the transport mechanism. The grains that have been conveyed and separated in the threshing section are stored in a hopper, and the grain bag is set from the paddy supply port at the lower part of the hopper to the grain bag. And
When the paddy bag is full of grains, the paddy sensor provided in the lower position inside the hopper senses that state, and the paddy bag full alarm is issued and the shutter is closed, so that the paddy feed port of the hopper The paddy supply is automatically stopped. Also, when the grain stored in the hopper reaches the level of the hopper full alarm sensor provided at a relatively high position in the hopper, the sensor is turned on and the hopper is brought into a state immediately before overflow by a buzzer or the like. The worker is alerted to this.

(C) Problems to be solved by the present invention By the way, in the above-mentioned conventional combine harvester, when the set paddy bag becomes full, the shell grains whose supply is stopped are stored in the hopper having a relatively large capacity for a while. Since it continues to be stored for a while, there is no problem even if the operator does not immediately replace the paddy bag for some reason, but after that period, the hopper will be in a state just before full and the hopper full alarm sensor will operate. And an alarm is issued. In such a case, if the notification is given, the grain will overflow from the overflow lid of the hopper, so that it becomes necessary to remove the full paddy bag and set a new paddy bag immediately. At that time, if the traveling speed of the combine is normal work speed, it will be difficult to replace the paddy bag, and the hopper will overflow quickly, so that one operator can operate the combine near the combine. When the operator is in a working condition such as replacing a paddy bag, the operator of the combine operates the continuously variable transmission lever to reduce the traveling speed of the combine so that another operator may When the work of replacing the paddy bag is completed, the speed change lever is operated again to return the combine to the normal work speed.In such work, the operator runs while considering the movements of other workers. Since the operation had to be performed, the operation became very troublesome, and if the breathing of both was not performed, it was extremely dangerous work for other workers. On the other hand, in the case of a work mode in which the combine is automatically run at a normal work speed by using the automatic direction control device, and the work is performed by only one worker, the above-mentioned danger is less likely to occur. In this case, the operator must replace the paddy bag and other work while the combine is automatically traveling, which is very hard work for the operator.
Further, in this case, if the hopper full alarm is issued while the worker is away from the combine and doing some work, the grains will overflow from the hopper by the time the worker returns to the combine. There was an inconvenience.

(D) Means for Solving Problems The present invention aims to solve the above-mentioned problems,
A displacement detector that detects the operation position of the speed change lever and the shift position of the continuously variable transmission is connected to the control unit, and the continuously variable transmission is operated by an actuator that operates based on a signal from the control unit. , The hopper full alarm sensor is connected to the control unit, and when the hopper full alarm sensor is turned on, the continuously variable transmission is set to the deceleration position set in the control unit regardless of the operation position of the shift lever. When the hopper full alarm sensor is turned off, the continuously variable transmission is operated so that the speed position corresponds to the operation position of the shift lever. The automatic deceleration control mechanism for the combine when the hopper is full is activated.

(E) Action By adopting the above-mentioned means, when the hopper full alarm sensor is turned on in the state immediately before the hopper is full,
On the basis of the command from the automatic deceleration control means, the combine traveling speed is automatically reduced from the normal working speed to the low set speed, so that the storage speed of the grains in the hopper becomes slower, which causes Until the grain overflows. Then, when the worker removes the full paddy bag and sets a new paddy bag and starts filling the grain again, the grain level in the hopper drops and the hopper full alarm sensor is activated. The combiner is turned off, and the combine is returned to the normal working speed corresponding to the operation position of the shift lever.

(F) Examples Hereinafter, examples embodying the present invention will be described.

As shown in FIG. 1, the combine 1 is provided with a pretreatment unit 3 in front of the driver's seat 2 and a hopper 5 in the rear thereof, and the combiner 1 is turned on when the paddy bag is full below the inside of the hopper 5. A paddy sensor L6 is installed, and a hopper full alarm sensor (paddy sensor H) 7 that is turned on when the hopper 5 is in a state immediately before overflow is installed above the paddy sensor L6. An alarm buzzer 9 is provided on the outer wall of the hopper 5 near the driver's seat 2, and a lid 10 for overflow is provided on the upper part of the hopper 5. Further, in the vicinity of the driver's seat 2, a main speed change lever 12 for performing a switching operation of the mission 11, a continuously variable transmission 13 including a drive side split pulley 13a and a driven side split pulley 13b, and the mission 11 are provided. A main clutch pedal 16 that operates a clutch 15 that connects and disconnects power transmission, and various operating devices such as a speed change lever 19 that operates a continuously variable transmission 13 that transmits the motive power of an engine 17 to a transmission 11 are provided. Has been done. When the speed change lever 19 is rotated to the speed increasing side, the microcomputer 20 outputs a voltage V proportional to the rotation angle θ to the speed change lever 19.
A potentiometer P ₁ 21 is provided so as to be connected to the drive side split pulley 13a of the continuously variable transmission 13 so as to be normally rotated, reversely rotated or stopped by the output from the microcomputer 20. A potentiometer R ₂ which is interlocked to input a voltage V proportional to the position of the drive side split pulley 13a, that is, the traveling speed v of the combine 1 to the microcomputer 20 and the motor 22 for changing the speed change state of the drive gear 13.
And 23 are provided. Further, the paddy sensor L6 and the paddy sensor H7 are connected so as to input their ON and OFF signals to the microcomputer 20, respectively, and the alarm buzzer 9 is driven by the output from the microcomputer 20. In addition, an alarm stop button 26 is installed on the operation panel 25 near the driver's seat 2, and the alarm stop button 26 is connected to the microcomputer 20 to stop the operation of the alarm buzzer 9 when the alarm stop button 26 is turned on. There is.

Based on the above configuration, the rotation of the engine 17 is transmitted to the continuously variable transmission 13 including the drive side split pulley 13a and the driven side split pulley 13b via a belt transmission device and the like, and further via the clutch 15 in the connected state. It is transmitted to the mission 11. Then, in the mission 11, the gears are switched by the main shift lever 12 so that the gears are appropriately shifted and transmitted to a traveling device such as a crawler. Generally, in mowing (harvesting) work, the main shift lever 12 is, for example, a medium speed in the standard and a house speed in the lodging, depending on the field condition.
It is set at a predetermined position, and in this state, the traveling speed is appropriately controlled by the continuously variable transmission lever 19.

At this time, the predetermined operation position of the continuously variable transmission lever 19 is detected as a voltage by the potentiometer 21 which constitutes the displacement detector, and the value is input to the microcomputer (control unit) 20 and the gear position of the continuously variable transmission device 13 is detected. Is detected as a voltage by the potentiometer 23 constituting the displacement detector, and the value is input to the microcomputer 20, and the input values from these potentiometers 21 and 23 are constantly compared in the microcomputer 20. Then, by operating the continuously variable transmission lever 19, the potentiometer 21
Change in the input value from the potentiometer 23 on the continuously variable transmission side, the microcomputer 20 outputs the difference to the input value from the potentiometer 23 on the continuously variable transmission side. By rotating the continuously variable transmission 13 so that the input value from the potentiometer 23 matches the input value on the side of the gear shift lever, that is, the continuously variable transmission 13 is brought to the gear shift position corresponding to the operation position of the gear shift lever 19. In this state, the rotation of the motor 22 is stopped and the continuously variable transmission is set to that position.

As shown in FIG. 2, when the paddy sensor L6 is off, the alarm buzzer 9 is inactive (S1, S
2) If the paddy sensor L6 is on and the paddy sensor H7 is off (S3), the alarm stop button 26 in the off state alerts the operator to the full state of the paddy bag.
The alarm buzzer 9 is activated "intermittently" (S
5) When the alarm stop button 26 is pressed to turn on this state (S4), the operation of the alarm buzzer 9 is stopped (S2). In any of the above cases, the potentiometer P ₁ 21
The input signal from the potentiometer P ₂ 23 and the input signal from the potentiometer P ₂ 23 are compared (S6), and the position of the drive side split pulley 13a of the continuously variable transmission 13, that is, the traveling speed of the combine 1 is operated and rotated. When the angle θ is supported, no drive signal is issued from the microcomputer 20 to the motor 22, and the combine 1 maintains the current traveling speed (S
7) Then, when the operation angle θ of the shift lever 19 and the traveling speed v of the combine 1 do not correspond to each other and a deviation occurs, a normal rotation signal or a reverse rotation signal is issued from the microcomputer 20 to the motor 22. The position of the drive side split pulley 13a is moved, and the combine 1 is accelerated or decelerated to correct the above deviation (S8, S9).

Next, when grains are accumulated in the hopper 5 and the paddy sensor H7 is turned on, the alarm stop button 26 (S1
In step 0), the alarm buzzer 9 is activated "continuously" in order to alert the operator that the hopper 5 is in the state immediately before full (S11), and the alarm stop button 26 is activated to stop this state. When the alarm is turned on, the above alarm buzzer 9
The operation of is immediately stopped (S12). In this case,
Stored in the microcomputer 20 in the comparison between the input signal from the potentiometer P ₂ 23 corresponding to the running speed of the current set speed v _s and combine the first (automatic deceleration control configuration means) Combine 1 is performed (S13) When the traveling speed v of the combine 1 is equal to or lower than the set speed v _s , the traveling speed is maintained as it is (S7). When the traveling speed v of the combine 1 is faster than the set speed v _s , the combine 1 is set to the set speed.
The speed is reduced to v _s (S9).

That is, in the embodiment shown in FIG. 2, the paddy bag is full and the paddy sensor L is turned on. In this state, the cutting (harvesting) work is further continued, and the paddy sensor H (hopper full alarm sensor). When is turned on, the combine is decelerated to the set traveling speed V _s with or without pressing the alarm stop button.

When the full paddy bag is removed and a new paddy bag is set and the filling of the grain is started in the slow running state at the set speed v _s described above, the grain in the hopper 5 is started. Since the level is lowered and the paddy sensor H7 is turned off based on that, the combine 1 is controlled again to return to the traveling speed corresponding to the operation position of the shift lever 19 described above.

When the operation shown in FIG. 2 is performed, the deceleration control described above is executed every time the hopper full sensor, that is, the paddy sensor H7 is turned on. However, when the operator has enough room to follow the traveling of the combine 1, the deceleration control as described above may rather reduce the work efficiency. The control means for dealing with such a case will be described below. It should be noted that FIG. 3 described below is a modification of a part of the operation flow shown in FIG. 2, and since the operation is generally similar to that of FIG. The explanation will focus on the parts that

In FIG. 3, when the paddy sensor H7 is turned on while the paddy sensor L6 is turned on (S1, S3), the microcomputer 20
The soft buzzer 9 starts "continuously" so that the operator can be alerted that the hopper 5 is in the state immediately before full by the alarm stop button 26 in the off state at the same time (S15). Will be activated (S1
1). Then, when the time T _s set in the microcomputer 20 e.g. 10 seconds elapses after the paddy sensor H7 is turned on (S16), the combine 1 described in FIG. 2 runs at the set speed v _s or less. The automatic deceleration control is executed (S9) (see the time chart (1) in FIG. 4).

In the above case, when the operator actuates the alarm stop button 26 to stop the alarm buzzer 9 within a set time Ts after the paddy sensor H7 is turned on, the automatic deceleration control described above is executed in this case. Instead, the combine 1 is maintained at the traveling speed corresponding to the operation position of the shift lever 19 (S6) (see the time chart (2) in FIG. 4).

In addition, when the operator removes the full paddy bag within the set time Ts after turning on the paddy sensor H7 and starts filling the grain in the newly set paddy bag, the grain in the hopper 5 is Since the grain level decreases and the paddy sensor H7 is turned off (S3), the automatic deceleration control described above is not executed in this case as well, and the combine 1 continues to maintain the traveling speed corresponding to the operation position of the deceleration lever 19 (S6). ) (See the time chart (3) in Fig. 4).

(G) Effect of the Invention As described above, according to the present invention, the shift lever 19
The continuously variable transmission 13 is connected to a control unit 20 such as a microcomputer via displacement detectors 21 and 23 such as potentiometers, and a hopper full sensor 7 installed in the hopper 5 is connected to the control unit 20. Further, the continuously variable transmission 13 is connected so as to be controlled by the control unit 20, and when the hopper full alarm sensor 7 is turned on, the continuously variable transmission 13 is controlled regardless of the operation position of the speed change lever 19. Since the unit 20 is operated at the deceleration position set by the unit 20, the combiner 1 automatically decelerates in a state immediately before the hopper 5 is full, so that the operator can perform a troublesome deceleration operation of the combine 1. There is no need to do this, and especially for the combine 1 that is automatically traveling, the operator is forced to perform hard work. There is eliminated, further, since the slower reservoir speed of grain into the hopper 5, earn the time to overflow, the operator can perform work with ease. In addition, in the above state, when the operator removes the full paddy bag and restarts the filling of grain into the newly set paddy bag, the continuously variable transmission 13 is turned off when the hopper full alarm sensor 7 is turned off. Is set to return to the speed position corresponding to the operation position of the shift lever 19, so that the operator of the combine harvester also continues to monitor the work status of other workers and then performs a speed increasing operation. And is protected from the danger of the operator's careless speed-up operation for other workers, and especially when the combine 1 is in the automatic traveling state, the combine 1 automatically operates after the end of the work. Since the mowing work is continued at the working speed, the work efficiency is greatly improved. Further, since the automatic deceleration control mechanism according to the present invention can be realized mainly by the soft processing by directly using the paddy alarm sensor, the operating device, the actuator or the like attached to the combine which is the current production machine, the cost performance can be reduced. It will be extremely good.

Further, the alarm stop means 26 for stopping the hopper full alarm within a set time after the hopper full alarm sensor 7 is turned on.
When the operator operates or the hopper full alarm sensor is turned off, the automatic deceleration control means is configured not to be operated, and when the operator has a sufficient margin to follow the traveling of the combine 1, the work efficiency is reduced. You can continue working without it.

[Brief description of drawings]

FIG. 1 is a control block diagram of an automatic deceleration control mechanism for a combine according to the present invention, FIG. 2 is a work flowchart thereof, FIG. 3 is a work flowchart obtained by modifying a part of the flow of FIG. 2, and a fourth. The drawing is a time chart for explaining the flowchart of FIG. 1 ... Combine, 7 ... Hopper full alarm sensor (paddy sensor H), 13 ... Continuously variable transmission, 19 ... Shift lever, 20 ... Control unit (microcomputer), 21 ... Displacement detector (potentiometer P) ₁ ), 23 ... Displacement detector (potentiometer P ₂ )

Claims (2)

[Claims] 1. A hopper capable of mounting a paddy bag below, a continuously variable transmission which is operated by a shift lever and shifts a traveling speed, and a hopper full alarm sensor for detecting that the hopper is full. In the combine, the displacement detector for detecting the operation position of the speed change lever and the shift position of the continuously variable transmission are connected to the control unit, and the continuously variable transmission is connected to the signal from the control unit. When the hopper full alarm sensor is turned on, the continuously variable transmission is controlled regardless of the operation position of the shift lever by operating the actuator that operates based on the above operation. The unit is provided with automatic deceleration control means for operating the actuator so that the deceleration position is set, During off operation of the cup alarm sensor, the continuously variable transmission formed by operating the actuator so that the speed position corresponding to the operating position of the shift lever, Combine automatic deceleration control mechanism at the hopper full. 2. The automatic deceleration control means operates when the alarm stop means for stopping the hopper full alarm is set within a set time after the hopper full alarm sensor is turned on or when the hopper full alarm sensor is turned off. The automatic deceleration control mechanism for the combine when the hopper is full according to claim 1, which is configured so as not to operate.