JP2001258371A - Combine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a combine capable of preventing a damage of its transmission system on restarting it after its emergency stop. SOLUTION: This acceleration control of a combine for automatically controlling the number of rotation of its engine at a prescribed rotation is provided by fully closing an accelerating lever when an auger-clogging sensor is turned on during its cereal grain-discharging period from the auger.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a combine which can prevent a power transmission system from being damaged at the time of restart after an emergency stop.

[0002]

2. Description of the Related Art An accelerator lever operating means for raising and lowering the engine speed to a target speed and a traveling lever operating means for increasing and decreasing the vehicle speed are provided. When the means is moved to the speed increasing side, the accelerator lever also moves to increase the engine speed accordingly, and when the traveling lever operating means is moved to the deceleration side, the accelerator lever also moves to the direction to decrease the engine speed, so that the engine speed is increased. There is known an accelerator control type combine which is designed to maintain a rated value.

[0003]

By the way, in such a conventional combine, the grains are clogged when the grains are discharged from the auger, and the drainage is discharged between the feed chain and the drainage chain during the threshing operation. If it gets clogged, the engine is stopped immediately. However, when the engine is restarted after such an emergency stop, if the engine is erroneously started at a high engine speed, the transmission system may be damaged. The present invention has been made to solve the above-described conventional problem, and an object of the present invention is to prevent a transmission system from being damaged at the time of restart after an emergency stop.

[0004]

In order to achieve the above object, the invention according to claim 1 comprises accelerator lever operating means for raising and lowering the engine speed to a target speed, and adjusting the engine speed to a rated speed. In the combine which automatically adjusts the accelerator lever, the accelerator lever is fully closed when the auger clogging sensor is turned on when the grain is discharged from the auger. Further, the invention according to claim 2 is provided with an accelerator lever operating means for raising and lowering the engine speed to a target speed, and in a combine which automatically adjusts the accelerator lever to adjust the engine speed to the rated speed, during harvesting work. When the straw sensor is turned on, the accelerator lever is fully closed.

[0005]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is an overall side view showing an example of a combine according to the present invention. The combine according to the present invention includes a crawler a of the combine, a crawler drive shaft b, a cutting unit c, a feed chain d for feeding the cut culm to the threshing machine, and a grain for storing the threshed grain. It has a tank e and an auger f for discharging the stored grains outside the machine.

FIG. 2 is a layout view of switches in the driver's seat of the combine according to the present invention. Travel lever (HST)
The lever 1 is tilted back and forth to increase or decrease the vehicle speed. When the vehicle is tilted forward from a neutral position in the figure, the speed is increased in the forward direction, and when it is tilted backward, the speed is increased in the reverse direction. When the vehicle is returned from the forward or reverse position to the neutral position, the speed is reduced, and the aircraft stops at the neutral position. The accelerator lever 2 tilts back and forth to open and close the throttle to raise and lower the engine speed. Tilt it backward to open the throttle and raise the engine speed, and tilt it forward to close the throttle and increase the engine speed. Lower.

The combine according to the present invention is provided with an automatic accelerator control device in which an HST lever 1 for increasing / decreasing the vehicle speed is linked with an accelerator lever 2 for increasing / decreasing an engine speed to keep the engine speed at a rated value. ing.

As described above, the combine according to the present invention is characterized in that the accelerator lever is fully closed when the auger clogging sensor is turned on at the time of discharging the grain from the auger. As shown in FIG. 3, the auger clogging sensor 4 is installed near the discharge port at the tip of the auger f.

FIG. 4 is a control block diagram of the combiner according to the present invention. An automatic accelerator control switch (IQ accelerator switch) 11, a threshing switch 14, and a culm sensor 1 are provided on the input side of a CPU 10 via an input interface 10a.
5, the auger discharge switch 17 and the like are connected, and the output side is connected to the engine speed adjustment motor 22, the HST lever increase / decrease adjustment motor 23 and the like via the output interface 10b.

FIG. 5 is a control flowchart according to the present invention. That is, when the auger discharge switch 17 and the IQ accelerator switch 11 are both on and the auger jam sensor 4 is switched from off to on, if the accelerator lever position has not changed in the closing direction, the accelerator close is output, Position the accelerator lever fully closed. In short, when performing IQ accelerator control,
When the auger discharges grains, the accelerator lever is automatically operated to the fully closed position (idling position) when the engine is stopped immediately by the reaction of the auger clog sensor 4. This prevents the engine from being swung up when the engine is restarted, and prevents the transmission system from being damaged.

Another embodiment of the combine according to the present invention is characterized in that the accelerator lever is fully closed when the discharge sensor is turned on during the harvesting operation. FIG. 6 is a control flowchart according to the present embodiment. That is, when both the threshing switch 14 and the IQ accelerator switch 11 are on and the waste clogging sensor is switched from off to on, if the accelerator lever position has not changed in the closing direction, the accelerator closing is output, Position the lever fully closed.

In short, in the case where the IQ accelerator control is being performed, the waste is clogged between the feed chain and the waste straw chain during the harvesting operation with the threshing switch 14 turned on, and the engine is activated by the reaction of the waste clog sensor. When the is stopped, the accelerator lever is automatically operated to the fully closed position (idling position). As a result, similarly to the above-described embodiment, it is possible to prevent the engine from restarting when the engine is restarted, thereby preventing the transmission system from being damaged.

Next, in connection with the present invention, a description will be given of the accelerator control of the combine for temporarily stopping the automatic accelerator adjustment when the engine speed repeatedly rises and falls during the rated speed control. FIG. 7 is a flowchart of such accelerator control. First, the values detected by the engine speed, the accelerator lever position, the HST lever position, the threshing switch, the grain culm sensor, the striking rod release / non-existence switch, and the auger discharge switch are read (steps 11 to 1).
7).

If the accelerator control automatic switch 11 is turned on and the threshing switch 14 is turned on, it is determined whether or not the accelerator lever is being adjusted to the rated rotation (steps 18 to 20). If the engine speed repeatedly changes during the rated speed adjustment, the rated speed adjustment is stopped on the higher engine speed side, and a rated speed adjustment delay flag is set (steps 21 to 23). If the engine speed has not been repeatedly changed, the rated speed adjustment is continued (step 24).

Then, when the rated rotation adjustment of the accelerator lever is stopped and the delay flag is set, the rated rotation adjustment is restarted after a lapse of a predetermined time or after traveling a certain distance, and the delay flag is reset (steps 25 to 28). . Conventionally, when the threshing lever is turned on, the accelerator lever is adjusted to achieve the rated rotation, but the engine speed greatly fluctuates due to the increase or decrease in the threshing load or the increase or decrease in the traveling load.

Therefore, as described above, when the engine speed repeatedly increases and decreases while adjusting the accelerator lever so that the rated rotation is achieved when the threshing lever is turned on, since the load fluctuation is large, the automatic adjustment is temporarily stopped. , The automatic adjustment is returned again, so that the automatic accelerator control performance can be improved and the operator's working feeling can be improved.

Next, in connection with the present invention, an accelerator control means in consideration of an increase in load at the time of auger discharge will be described.
Conventionally, at the time of auger discharge, the rated rotation speed (2600 rpm-
The acceleration lever adjustment is stopped only once when the speed slightly falls below the upper limit of 2800 rpm. However, the load becomes large at the time of discharging the paddy, so that the adjustment may be too low below the rated rotation upper limit. Therefore, taking into account the load increase when the paddy actually begins to be discharged, by adjusting it so that it changes near the rated rotation upper limit, the automatic accelerator control performance is improved, and the auger paddy clogging due to the excessive decrease in the engine rotation is performed. Etc. can be prevented.

FIG. 8 is a flowchart of such accelerator control. First, engine speed, accelerator lever position, HST lever position, threshing switch, grain stalk sensor,
The detected values of the striking rod release switch and the auger discharge switch are read (steps 31 to 37). Here, if the accelerator control automatic switch 11 is turned on and the auger discharge switch 17 is turned on, it is determined whether or not the accelerator lever is being adjusted to the rated rotation (steps 38 to 40). When the engine speed falls below the upper limit of the rated speed during the rated speed adjustment of the accelerator lever, the accelerator lever is set to a higher (increased) side by a fixed amount to stop the accelerator lever adjustment (steps 41 and 42), and the engine speed decreases. Not too much.

FIG. 9 is a control flowchart for the same purpose. When it is detected that the engine speed has fallen below the upper limit of the rated speed during the adjustment of the rated speed of the accelerator lever, a predetermined time has elapsed since then, or the vehicle has been driven for a certain distance. Until the rated rotation of the accelerator lever is continued, the rated rotation is stopped after a lapse of a certain time or after traveling a certain distance (steps 44 to 46) so that the engine speed does not decrease too much.

Next, in connection with the present invention, an accelerator control in which the accelerator lever is kept at the rated rotation during the pillow processing operation and the rotation is adjusted to a low speed after the operation is completed will be described. FIG. 10 is a flowchart of the accelerator control.

First, the detected values of the engine speed, the accelerator lever position, the HST lever position, the threshing switch, the grain culm sensor, the striking rod release / absence switch, and the auger discharge switch are read (steps 51 to 57). here,
Threshing switch 1 with accelerator control automatic switch 11 on
If the switch 4 is on, it is determined whether the HST lever 1 is at the neutral position (steps 58 to 60). HS
When the T-lever 1 is in the neutral position, when it is detected by the striking rod release presence / absence switch 18 that the switch has been made from no release (during normal reaping) to release (during pillow processing), the rated rotation of the accelerator lever is adjusted. Is continued, and when it is detected that the switching is performed from the release to the release, the accelerator lever is rotated at a constant low rotation (for example, 2000 rpm) after a lapse of a predetermined time.
m) (steps 61 to 65).
In step 60, when the HST lever 1 is not in the neutral position but in the speed increasing region, the rated rotation of the accelerator lever is adjusted (steps 66 and 67).

That is, when the threshing switch 14 is turned on and the HS
When the T-lever 1 is in the neutral position, when the striking rod release / non-existence switch 18 is switched from no release to release, the accelerator lever is kept at the rated rotation. After the lapse, the accelerator lever is adjusted so as to have a constant low rotation. Thereby, the accelerator automatic control performance at the time of pillow processing is improved, and the pillow processing operation can be performed without operating the accelerator lever, and when the operation is completed, the rotation speed is reduced to save energy and reduce noise. In addition, the work is sharpened, and the work feeling of the operator is improved.

Next, in connection with the present invention, when the threshing switch is turned on and the HST lever is in the speed increasing region, the accelerator lever is kept at the rated rotation, and when the speed becomes neutral from the speed increasing region, the rotation speed is reduced after a certain time elapses. The accelerator control to be adjusted will be described. FIG. 11 is a flowchart of the accelerator control.

First, the detected values of the engine speed, the accelerator lever position, the HST lever position, the threshing switch, the grain culm sensor, the striking rod release / absence switch, and the auger discharge switch are read (steps 71 to 77). here,
Threshing switch 1 with accelerator control automatic switch 11 on
4 is on, it is determined that the HST lever 1 has switched from the speed increasing region to the neutral position (steps 78 to 8).
0). When the HST lever 1 is in the speed increasing region, the rated rotation of the accelerator lever is continued, and when it is detected that the HST lever 1 is switched from the speed increasing region to the neutral position,
Adjustment is performed so that the accelerator lever rotates at a constant low speed (for example, 2000 rpm) after a predetermined time has elapsed or after a predetermined time has elapsed (steps 81 to 84).

That is, when the threshing switch 14 is turned on and the HS
When the T-lever 1 is in the speed increasing region, the accelerator lever is set to the rated rotation adjustment, and when the speed is switched from the speed increasing region to the neutral position, the adjustment is performed so that the accelerator lever is rotated at a constant low speed after a lapse of a certain time. Configuration. This allows
Improve the automatic accelerator control performance and save energy and reduce noise to reduce the speed when not harvesting.
Further, the operator's working feeling is also improved.

Next, an air conditioner control device for a combine will be described with reference to the present invention. In the case of conventional combine air conditioner control devices that are configured to operate the compressor clutch of the air conditioner for a certain period of time at the end of combine harvesting to suppress engine drop during circling, the engine rotation drop due to the load during turning operation However, if the compressor is stopped immediately after the operation of the air conditioner and before the air conditioner gas is not sufficiently cooled, uncooled air is blown to the operator, resulting in reduced comfort.

Therefore, a sensor is provided for detecting the temperature of the air blown out of the air conditioner or the room temperature. If the temperature detected by the sensor does not reach a certain reference temperature, the compressor clutch is not disengaged even during reciprocation. The configuration is as follows. Thereby, it is possible to prevent the above-described decrease in comfortability immediately after the operation of the air conditioner. FIG. 12 is a block diagram of air conditioner control, FIG. 13 is a perspective view of the vicinity of the ceiling in the cab, and FIG. 14 is a perspective view of a temperature sensor. The room lamp 34, the air conditioner operation panel 32, the blowout grill 3
3. The temperature sensor 31 and the like are arranged.

The completion of cutting of the combine is detected by a grain culm sensor, and the air-conditioner blowing temperature at that time is detected by a temperature sensor 31 installed at a blowing grill 33. If the detected temperature does not reach the reference temperature, Do not turn off the compressor clutch.

Further, as another embodiment, after detecting the end of combine harvesting, the gas temperature of the air conditioner is detected by a gas thermo sensor, and the compressor clutch is not disengaged until the temperature of the air conditioner is detected at least once to a predetermined value or less. The configuration is as follows.

In another embodiment, the completion of cutting of the combine is detected by a grain culm sensor. At this time, if a predetermined time has not elapsed since the air conditioner was turned on, the compressor clutch should not be turned off. Constitute.

[0031]

As described above in detail, according to the combine of the present invention, when the accelerator lever is automatically adjusted to adjust the engine speed to the rated speed,
When the auger clog sensor is turned on when the auger is discharged from the auger, the accelerator lever is fully closed so that when the engine is restarted, the engine will not accidentally start at a high speed and the transmission system Damage can also be prevented.

Further, according to the combine of the present invention, when the accelerator lever is automatically adjusted to adjust the engine speed to the rated speed, when the exhaust sensor is turned on during the harvesting operation, the accelerator lever is fully closed. As a result, when the engine is restarted as described above, the engine is not erroneously started in the high rotation state, and the transmission system can be prevented from being damaged.

[Brief description of the drawings]

FIG. 1 is an overall side view of a combine according to the present invention.

FIG. 2 is a switch layout diagram of a driver's seat of a combine according to the present invention.

FIG. 3 is a diagram showing the internal structure of the combine auger.

FIG. 4 is a control block diagram of a combine.

FIG. 5 is a flowchart of accelerator control.

FIG. 6 is a flowchart of accelerator control.

FIG. 7 is a flowchart of accelerator control.

FIG. 8 is a flowchart of accelerator control.

FIG. 9 is a flowchart of accelerator control.

FIG. 10 is a flowchart of accelerator control.

FIG. 11 is a flowchart of accelerator control.

FIG. 12 is an air conditioner control block diagram of the combine.

FIG. 13 is a perspective view of the vicinity of a ceiling in a cab.

FIG. 14 is a perspective view of a temperature sensor.

[Description of Signs] 1 HST lever 2 Accelerator lever 3 Power steering lever 4 Auger paddy clogging sensor 10 CPU 11 Automatic accelerator control switch 14 Threshing switch 15 Grain culm sensor 17 Auger discharge sensor 31 Temperature sensor a Combine crawler b Crawler drive shaft c Cutting Part d feed chain e grain tank f auger

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Inventor Hidetaka Hirayama 1-Yakura, Tobe-cho, Iyo-gun, Ehime Pref. RA02 3G084 AA07 BA05 CA00 CA01 DA35 FA00 FA10 FA33

Claims (2)

[Claims] 1. A combine which includes accelerator lever operating means for raising and lowering the engine speed to a target speed and automatically adjusting the accelerator lever to adjust the engine speed to a rated speed. A combine characterized in that the accelerator lever is fully closed when the clog sensor is turned on. 2. A combiner comprising an accelerator lever operating means for raising and lowering the engine speed to a target speed and automatically adjusting the accelerator lever to adjust the engine speed to a rated speed. Combine characterized by fully closing the accelerator lever when turned on.