JP2001190135A - Combine harvester - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent short culms from being left unthreshed in the reaping operation of the short culms. SOLUTION: This combine harvester is equipped with an operation means for traveling lever for increasing and decreasing the speed of the combine harvester and an accelerator lever operation means for increasing and decreasing the number of revolutions of an engine to a target number of revolutions, when short culms are detected in a reaping operation, and the speed of the combine harvester is reduced by the operation of the traveling lever.

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 unhandled short culm during harvesting.

[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 conventional vehicle speed control of the combine, the vehicle speed is adjusted in accordance with the load state in order to keep the engine rotation at a constant rate regardless of the grain culm state. In the case of short culm, it is assumed that the culm is conveyed to the threshing unit in a shallow manner, and the chance of contact with the handling cylinder is considered to be smaller than usual, and a large amount of unmanaged occurs. SUMMARY OF THE INVENTION The present invention has been made to solve the above-mentioned conventional problems, and an object of the present invention is to prevent unhandled short culm harvesting.

[0004]

In order to achieve the above object, the invention according to claim 1 comprises a traveling lever operating means for increasing / decreasing a vehicle speed and an accelerator lever operating means for increasing / decreasing an engine speed to a target speed. When a short culm is detected during a mowing operation, the vehicle speed is reduced by operating the traveling lever. According to a second aspect of the present invention, in the first aspect, when a short culm is detected during the mowing operation, the vehicle speed is reduced by operating the traveling lever, and the transport speed of the mowing portion and the feed chain is reduced. . According to a third aspect of the present invention, there is provided 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 the rated speed. When a culm is detected, the rotation speed of the handling cylinder is increased.

[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 when a short culm is detected during a mowing operation, the vehicle speed is reduced by operating the HST lever 1. Further, when a short culm is detected, the vehicle speed is reduced by operating the HST lever 1 and the transport speed of the cutting unit c and the feed chain d is reduced.

FIG. 3 is a diagram showing the internal structure of the harvester c of the combine, FIG. 4 is a diagram showing the internal structure of the driver's seat of the combine, and FIG. 5 is a perspective view showing the driving relationship of the HST lever. As shown in FIG. 3, the grain culm sensor 3 is arranged at a predetermined position near the tip of the cutting unit c, and the short culm sensors 4 are arranged at two predetermined positions on the upstream side. As shown in FIGS. 4 and 5, when the HST lever motor 5 is driven, the HST lever 1 engaged with the output shaft of the motor 5 is tilted back and forth. When the HST lever 1 is operated, the transmission is transmitted to a transmission mechanism (transmission) 7 via a transmission 6 so that the vehicle speed can be increased or decreased.

FIG. 6 is a flowchart of the vehicle speed control of the combine according to the present invention. When the processing is started in accordance with this flow, when the engine rotation is at 500 rpm or more and the threshing lever is in the on state and the cereal culm sensor 3 is on and the short culm sensor 4 is off, the short culm is (Steps 1 to 4), and the position sensor detects whether the position of the HST lever 1 at this time is at a predetermined speed increasing side position (step 5). At this time, if the HST lever 1 is at the speed increasing position, an HST deceleration output request is made to reduce the vehicle speed (step 6). In response to this output request, the HST lever motor 5 is driven to tilt the HST lever 1 to the deceleration side, and the vehicle speed is reduced.

In addition, by reducing the transport speed of the cutting section c and the transport speed of the feed chain d together with the above-mentioned deceleration by the HST lever 1, the contact time of the culm with the handling cylinder is lengthened to reduce the unhandled portion. It is possible to do.

On the other hand, at the time of the short culm harvesting operation, increasing the rotation speed of the handling cylinder can also increase the contact of the culm with the handling cylinder to reduce the unhandled portion. As a method of increasing the rotation speed of the handling cylinder, there is a method of automatically operating the accelerator lever 2 to increase the engine rotation from the rated value and increase the engine rotation speed itself. At this time, the conveying speed of the feed chain d is reduced by a transmission such as a bell-con, a split pulley or the like so that the conveying speed of the feed chain d does not increase at the same time.

FIG. 7 is a flowchart of such accelerator control. When the processing is started in accordance with this flow, when the threshing lever and the accelerator automatic control (IQ accelerator) switch are turned on and the culm sensor 3 is turned on and the short culm sensor 4 is turned off, the cutting operation of the short culm is performed. (Steps 7 to 10), and an engine rotation sensor detects whether or not the engine rotation at this time is smaller than the rated value +100 rpm (step 11). At this time, if the engine speed is lower than the rated value, an output request for opening the accelerator is made (step 12). In response to this output request, the accelerator lever 2 is automatically operated to increase the engine rotation above the rating, thereby increasing the rotation speed of the handle cylinder. The means for increasing the cylinder rotation speed is not limited to the above-described method by increasing the engine rotation.

Next, in connection with the present invention, a combine having a control function of stopping the automatic accelerator control when an emergency stop switch is input will be described. FIG. 8 is a flowchart of such control. If the emergency stop switch 8 (see FIG. 1) installed on the side of the fuselage is turned on due to the occurrence of some emergency, while the engine is operating (engine rotation is 500 rpm or more) and the accelerator automatic control switch is turned on (step 13-15) If the accelerator automatic opening output request is made at that time, the output request is reset, and if the accelerator automatic opening output request is made, the output request is reset (step 1).
6 to 19), the output by the automatic accelerator control is stopped.

By stopping the automatic accelerator control in an emergency as described above, it is possible to prevent a sudden stop of the engine from being hindered, thereby avoiding a dangerous state and suppressing wasteful use of fuel.

Next, in connection with the present invention, a combine having a control function for positioning the accelerator lever 2 to the fully closed position by the automatic accelerator control when the emergency stop switch is input will be described. FIG. 9 is a flowchart of such control. The engine is running (engine rotation is 500
If the emergency stop switch 8 (see FIG. 1) installed on the side of the fuselage is turned on due to the occurrence of some emergency (steps 20 to 22), the accelerator automatic control switch is turned on (steps 20 to 22). Accelerator lever 2
Is determined to be fully closed (step 23). If it is not set to the fully closed position, an accelerator automatic closing output request is set (step 24), and the accelerator lever 2 is operated to the fully closed position.

By positioning the accelerator fully closed in an emergency as described above, it is possible to prevent a sudden state of the engine from being hindered, to avoid a dangerous state, and to suppress wasteful use of fuel.

Next, the turning control of the combine will be described with reference to the present invention. In FIG. 2 described above, the power steering lever 9 is tilted back and forth and left and right to operate raising and lowering of the reaping unit c and turning of the machine body. When the reaping unit c is tilted backward from the neutral position, the reaping unit c is raised. The reaping part c descends. The aircraft turns to the left when tilted to the left, and turns to the right when tilted to the right. The turning setting lever 10 is for switching the turning mode.
A backward turn selects a mild turn.

By the way, since the spin turn has a high running load, if the spin turn is started immediately, the rotation of the engine drops, and the sorting performance deteriorates during the threshing operation. In addition, when turning under high load such as during threshing work, it takes time to release the side clutch on the turning side, and if the turning switching output is performed as it is, a state where both the side clutch and the switching clutch are simultaneously engaged occurs. May not be able to turn.

Therefore, in the above case, the time for switching from a so-called brake turn to a spin turn is lengthened (that is, the timing is delayed) to reduce the load on the transmission. That is, the turning setting lever 10
When is in the turning position (spin or mild), the turning setting lever 10 is in the turning position when the turning setting lever 10 has the function of turning by turning the steering wheel in reverse in conjunction with the left / right operation of the power steering lever 9. When the power steering lever 9 is at the turning switching output position and the threshing lever is turned on, it is determined that a high load operation is being performed, and the turning switching output is delayed by a predetermined time.

FIG. 10 is a flowchart of such control. When the vehicle speed is 0.1 m / s or more, when the turning setting lever 10 is in the turning position, when the power steering lever 9 is in the turning switching output position, and when the threshing lever is turned on, it is determined that high-load work is in progress (step). 30-33). At this time, if the power steering lever 9 is in the neutral position or the brake position, the delay timer for the left / right turning switching output is set (step 36), a predetermined time is delayed, and after the timer is up, the turning switching output is performed (step 37). , 38).

FIG. 11 is a diagram showing an outline of the power steering operation. The turning function has a mode of brake (does not reverse on the driving side, normal direction change, only the side clutch), mild (reverse on the driving side, with the rotation switching clutch), and spin (with the reverse on the driving side, with the rotation switching clutch). These modes are selected by the turning setting lever 10. Then, in the spin or mild mode, the operation starts at the left and right tilt angles of the power steering as shown in FIG. When the power steering is not at the operation angle, the operation is the same as in the brake mode.

The control flowchart of FIG. 12 is the same as the flowchart of FIG. 10 described above.
When the turning setting lever 10 is in the turning position and the power steering lever 9 is in the turning switching output position, if the paddy sensor installed in the grain tank e has reacted at the fourth or higher stage (step 3).
9) It is determined that a high load operation is being performed, and at that time, the turning switching output is delayed by a predetermined time.

For example, when the grain culm sensor 3 (see FIG. 3) is switched from on to off when it reaches the end of the strip and detects the end of cutting, during the threshing operation of the cut culm within a predetermined period of time. , It is necessary to delay the transition to the spin turn. FIG. 13 shows a control flowchart in such a case. In running, when the turning setting lever 10 is at the turning position and the culm sensor 3 is switched from on to off, if the running distance is within a predetermined distance, In this case (steps 40, 41, 42), it is determined that a high-load operation is being performed, and at that time, the turning switching output is performed with a delay of a predetermined time.

The control flowchart of FIG. 14 detects that the inclination sensor is inclined by a predetermined value or more when the turning setting lever 10 is in the turning position and the power steering lever 9 is in the turning switching output position during traveling. Time (Step 4
3) It is determined that high-load work is being performed, and at that time, the turning switching output is delayed by a predetermined time.

In the control flowchart of FIG. 15, when the vehicle is running, the turning lever 10 is at the turning position, and when the power steering lever 9 is at the turning switching output position, the accelerator lever is positioned in the opening direction above the rated position. Nevertheless, when it is detected that the engine speed is lower than the rated speed (steps 44 and 45), it is determined that high-load work is being performed, and in that case, the turning switching output is delayed by a predetermined time. It is.

FIG. 16 is a flowchart of a control for setting the accelerator lever to the fully opened position when the power steering lever is operated to the mild range during running while the turning mode is spin / mild. That is, when the engine speed is 500 rpm or more, the threshing lever and the accelerator automatic control switch are turned on, the turning setting lever 10 is in the turning position, and the power steering lever 9 is in the turning switching output position (steps 51 to 55), the accelerator lever If the throttle valve 2 is not positioned at full open, an accelerator opening output operation is performed (steps 56 and 57) to position the accelerator at full open.

At the time of turning operation, a large load is applied to the engine. Therefore, during threshing operation, threshing performance is reduced during turning. As described above, when the turning setting lever 10 is in the turning position and the power steering lever 9 is in the turning switching output position, an automatic opening operation of the accelerator is performed to position the accelerator lever 2 to the fully open position, and the operation angle of the power steering is turned. By automatically opening and closing the accelerator lever 2 so that the engine rotation becomes rated when out of the range, the engine rotation at the time of turning can be maintained and a decrease in threshing performance can be prevented.

[0029]

As described in detail above, according to the combine of the present invention, when a short culm is detected during a mowing operation, the vehicle speed is reduced, so that the short culm can be prevented from being left unhandled. In addition, when a short culm is detected during the harvesting operation, by reducing the vehicle speed and reducing the transport speed of the cutting unit and the feed chain, the contact time between the culm and the handling cylinder is prolonged, and the short culm is left unhandled. Can be more reliably prevented. In addition, when a short culm is detected during a mowing operation, by increasing the rotation speed of the handling cylinder, the chance of contact with the handling cylinder of the culm is increased, and the unhandled short culm can be prevented.

[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 an internal structure of a cutting unit of the combine.

FIG. 4 is a diagram showing a structure of a driver's seat of the combine.

FIG. 5 is a perspective view showing a driving relationship of an HST lever.

FIG. 6 is a flowchart of the vehicle speed control of the combine.

FIG. 7 is a flowchart of the accelerator control of the combine.

FIG. 8 is a flowchart of accelerator control of a combine.

FIG. 9 is a flowchart of accelerator control of the combine.

FIG. 10 is a flowchart of combine turning control.

FIG. 11 is a diagram showing an outline of a power steering operation.

FIG. 12 is a flowchart of combine turning control.

FIG. 13 is a flowchart of combine turning control.

FIG. 14 is a flowchart of combine turning control.

FIG. 15 is a flowchart of combine turning control.

FIG. 16 is a flowchart of accelerator control of the combine.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 HST lever 2 accelerator lever 3 grain culm sensor 4 short culm sensor 5 HST lever motor 6 transmission 7 transmission mechanism 8 emergency stop switch 9 power steering lever 10 turning setting lever a combine crawler b crawler drive shaft c cutting part d feed chain e Grain tank f auger

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 2B074 AA01 AB01 AC02 AD01 BA19 DA02 DB04 DC01 DC07 DE03 DE05 EA01 EA06 EA07 EA09 EB15 2B076 AA03 DA02 DA05 DA09 DC01 EA02 EA08 EC23 ED01 ED04 ED06 ED09 2B082 AA01 B

Claims (3)

[Claims] A travel lever operating means for increasing or decreasing the vehicle speed;
A combine comprising an accelerator lever operating means for raising and lowering the engine speed to a target speed, wherein when a short culm is detected during a harvesting operation, the vehicle speed is reduced by operating the traveling lever. 2. The combine as claimed in claim 1, wherein when a short culm is detected during the cutting operation, the vehicle speed is reduced by operating the traveling lever and the transport speed of the cutting unit and the feed chain is reduced. 3. A combine that 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 the rated speed. Sometimes, the combine is characterized by increasing the rotation speed of the cylinder.