JPH09275758A - Dust discharging valve opening/closing controller for combine thresher - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent engine stoppage by holding the opening angle of a dust discharging valve in a prescribed large state regardless of vehicle speed reduction when the engine of a combine harvester is turned to an overload state at the time of synchronizing the opening/closing control of the dust discharging valve with the vehicle speed. SOLUTION: A reaping pre-processor is arranged at the front part of the traveling machine body of the combine harvester, a thresher is arranged at the back, a feed chain 7 is arranged on one side of a threshing chamber 10 provided with a threshing cylinder 11 in the thresher and the dust discharging valve 50 for discharging the material to be treated inside the threshing chamber is turned to be opened and closed by a control motor 51. From the detection value of a fuel jetting amount sensor 63, in a normal engine load state, an actuator 51 is driven so as to set the opening angle of the dust discharging valve 50 proportionally to the detection value of a vehicle speed sensor 64, however, at the time of an engine overload state and when the vehicle speed is to be reduced, the opening angle of the dust discharging valve 50 is held at the large state.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for controlling the opening and closing of a dust delivery valve in a handling chamber in a threshing device for a self-propelled self-removing combine.

[0002]

2. Description of the Related Art Conventionally, for example, Japanese Utility Model Publication No. 61-127.
No. 57, Jikken 2-24429, and No. 5-
No. 30410, etc., a dust delivery valve provided in a handling chamber of a combine threshing device is provided with an opening angle of the dust delivery valve when the load is large, depending on the amount of grain culm processed in the handling chamber and the load of the handling barrel. It has been proposed to control opening / closing such that the opening angle of the dust delivery valve of the dust delivery valve is reduced when the load is large and the load is small.

In this case, when the vehicle speed of the traveling machine body is high, the amount of mowing per unit time by the mowing pretreatment device is large, and the amount of grain culm to be supplied to the handling room is also large. In general, the control that is proportional to the vehicle speed and the load, and thus also to the opening / closing angle of the dust-sending valve, is normally executed.

[0004]

However, when the opening / closing control of the dust sending valve is executed, for example, in the case of cutting and threshing work when the grain culm is moist, the engine is stopped when the load on the handling cylinder and thus the engine is overloaded. To avoid this, if the vehicle speed is controlled to shift to the low speed side, the dust control valve is also immediately controlled to rotate in the closing direction, and the resistance of the dust control valve causes a load on the handling cylinder. There was a problem that straw was clogged in the handling room because it was not relatively reduced.

The present invention has been made in order to solve these problems. The present invention aims to synchronize the opening / closing angle of the dust-sending valve with the vehicle speed, but does not stop the engine, and performs rocking sorting and wind sorting performance. An object of the present invention is to provide a threshing device capable of threshing lightly without deteriorating.

[0006]

Therefore, in the dust control valve opening / closing control device in the combine threshing device according to the first aspect of the present invention, the cutting pretreatment device is arranged in the front part of the traveling machine body and the threshing device is arranged behind it. Then, the feed chain is arranged on one side of the handling room equipped with the handling cylinder in the threshing device, and the dust-discharging valve for discharging the processed material in the handling room is opened and closed by the actuator in synchronization with the vehicle speed of the traveling machine. In the combine configured as described above, when the deceleration control is performed in a state where the engine of the combine is overloaded, the dust control valve opening / closing control that synchronizes the vehicle speed is prohibited for at least a fixed time, and the predetermined value before the overload is set. It is provided with control means for driving and controlling the actuator so as to hold the position of the dust sending valve at the opening angle.

The invention described in claim 2 is the same as claim 1
In the control for maintaining the opening / closing angle of the dust delivery valve, when it is determined that the overload is reduced thereafter, the control means executes the control for returning to the vehicle speed synchronization control.

[0008]

According to the first aspect of the present invention, during the normal cutting and threshing work of the engine load, the angle of the dust delivery valve in the opening direction is increased when the vehicle speed is high, and the dust delivery valve is increased when the vehicle speed is low. The control means executes the vehicle speed synchronization control so as to reduce the angle of the opening direction of the vehicle or to rotate the vehicle in the closing direction, but the vehicle speed is controlled to avoid the engine stop when the engine is overloaded. When the deceleration control is forcibly performed, the actuator is arranged so that the vehicle speed synchronization control is prohibited and the position of the dust delivery valve is maintained at the preset opening angle (the side where the opening angle is large) before the engine is overloaded. Since the drive is controlled, the straw dust generated due to the grain stalks located in the handling room is quickly discharged to the end of the handling barrel, and the accumulation of dust in the handling room is eliminated. Sorting and wind sorting performance It is possible to prevent worsening. If the dust holding valve is held on the side with a large opening angle for a certain period of time or more, a large amount of straw and dust will not stay in the handling room forever, so the load on the handling cylinder can be reduced quickly. As compared with the case of synchronizing the vehicle speed to the deceleration side, it is easier to recover the engine load to the normal side, the rotation speed of the handling cylinder rises earlier, and the failure of clogging due to dust in the handling room can be reduced. .

Then, in the control for maintaining the opening / closing angle of the dust sending valve, when it is determined that the overload of the engine is reduced thereafter, the control means executes the control for returning to the vehicle speed synchronization control. After the vehicle speed tuning control is prohibited, the cutting and threshing work can be continuously and smoothly performed as compared with the control in which the control is reset (return to the initial state).

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION Next, an embodiment in which the present invention is applied to a combine will be described. FIG. 1 is a side view of a traveling machine body 1 of a combine having a pair of left and right traveling crawlers 2, and FIG. 3 is a side sectional view of the threshing device 3 on the traveling machine body 1, and FIG. 4 is a sectional view taken along the line IV-IV of FIG.

A threshing device 3 is mounted on the left side in the traveling direction of the traveling machine body 1, and a cutting pretreatment device 4 which can be moved up and down by a hydraulic cylinder (not shown) is arranged at the front part of the traveling machine body 1. On the lower side of the lower frame of the mowing pretreatment device 4, a hair clipper type mowing device 5 and six grain culm raising devices 6 for the front are arranged, and a grain culm raising device 6 and a front end of a feed chain 7 in the threshing device are provided. A grain culm transporting device 8 is arranged between them, and a grass body 9 projects forward from the lower part of the grain culm raising device 6.

The handling cylinder 11 in the handling room 10 of the threshing device 3
Are arranged along the traveling direction of the traveling body 1, and the tip portion of the grain culm conveyed while being clamped at the root by the feed chain 7 arranged at the left end of the handling chamber 10 is used as the handling cylinder 11.
Is threshed on the underside of. A crimping net 14 is provided in the processing chamber 12 below the handling room 10 except for the dust outlet 13, and the processing object leaking from the crimping net 14 is moved downward in the traveling direction of the traveling machine 1. It is received by a pair of feed pans 16 and 17 in a swing sorting mechanism 15 swinging forward and backward along the same, and undergoes swing sorting by a chaff sheave 18. At this time, the objects to be processed are subjected to wind sorting by the blower fan 20 for blowing the Karino fan 19 below and the feed pans 16 and 17 of the front and rear pair, and the first receiving gutter 23 as clean grains from the grain pan 21 and the sorting net 22. Fall in the direction. A processing drum 29 is arranged on the side of the handling chamber 10, and a part of the object to be processed is sent in the direction of the processing drum 29 at the rear side of the handling drum 11, and is further threshed.

The second processed material dropped from the rear chaff sheave of the swing selecting mechanism 15 is received by the second receiving trough 24,
The screw conveyor 24a and the second reduction conveyor 2
It is discharged onto the sieve line 26 via 5 and undergoes another sorting. The grains that have become fine grains by the swing sorting and the wind sorting are collected in the grain tank 27 via the screw conveyor 23a of the first receiving trough 23, and carried out of the machine via the discharge auger 28. . The dust in the processing chamber 12 is discharged outside the machine by the suction fan 30, and the straw inherited at the rear end of the feed chain 7 is discharged to the rear of the traveling machine 1 in a long state via the straw chain 31. Alternatively, it is discharged after being appropriately cut by the straw cutter 33. Reference numeral 32 denotes an operator's cab arranged on the front right side of the traveling body 1.

FIG. 5 is a skeleton diagram showing the power transmission system of the combine. One of the outputs from the engine 35 arranged below the cab 32 is connected to the bottom of the grain tank 27 via the clutch 36. Conveyor 37 and vertical conveyor 3
8 and then to a screw conveyor (not shown) in the discharge auger 28. The other output from the engine 35 is transmitted through the power branching mission 39 to the handle barrel drive shaft 40, the sorting drive shaft 41, the drive shaft 43 to the traveling hydraulic pump hydraulic motor type (HST type) traveling drive unit 42, and Power is transmitted to the constant speed rotary drive shaft 44 to the pre-mowing treatment device 4. Further, power is transmitted from the mowing tuning drive shaft 45 output from the (HST type) traveling drive unit 42 to the mowing shaft 47 via the one-way clutch 45a (which can be transmitted only when the traveling drive unit rotates forward) and the tuning clutch 46. Let Further, while the power is directly transmitted from the mowing shaft 47 to the feed chain 7, the power transmission to the mowing pretreatment device 4 is interrupted by turning on and off the mowing clutch 49 provided on the mowing shaft 47. Turn on each clutch 46, 48, 49
To perform the OFF operation, clutch actuators 55, 56, such as electromagnetic solenoids corresponding to the respective clutches,
It is configured to turn ON / OFF 57. Therefore, as will be described later, in the case of prohibiting (stopping) the vehicle speed synchronization control, etc., power is transmitted to the mowing shaft 47 via the constant speed rotary drive shaft 44 of the power branching mission 39 (HST type).
When the rotation speed of the mowing tuning drive shaft 45 output from the traveling drive unit 42 is lower than the rotation speed from the constant speed rotation driving shaft 44 side, or when the mowing tuning drive shaft 45 rotates in the backward direction of the combine, The one-way clutch 45a idles.

Further, in order to determine the load state of the engine 35, the detected value of the fuel injection amount sensor 63 of the fuel supply device with an electronic governor for the engine 35 and the rotational speed of the output shaft to the crawler of the traveling drive unit 42 are detected. The detected value of the vehicle speed sensor 64 for inputting is input to the controller unit 60. Then, when the traveling machine body 1 is rotated to the forward position, the neutral position (stop position), and the reverse position by operating the main shift lever 53, the respective positions are detected by the lever position sensor 54. The detection signal is used as a controller unit 6 as a microcomputer type control means.
Enter 0.

Therefore, when performing the mowing threshing work while the traveling machine body 1 is traveling forward, the flow-in clutch 48 in the power branching mission 39 is turned off (power cutoff), and the synchronizing clutch 46 and the clutch 49 are turned on (power connection). In this state, while monitoring the detection values of the fuel injection amount sensor 63 and the vehicle speed sensor 64, the reaping shaft 47 is driven through the reaping tuning drive shaft 45 having a rotation speed that is synchronized with the output of the traveling drive unit 42 to reaper. The pretreatment device 4 and the feed chain 7 are synchronously driven, while the handling cylinder drive shaft 40 and the sorting drive shaft 41 are driven to handle the handling barrel 11, the processing barrel 29, the blower fan 20, the Karawan fan 19, the swing sorting mechanism 15, etc. Drive.

Further, when the traveling machine body 1 is stopped or retracted when changing the direction of the traveling machine body during the cutting and threshing work in the field, when the driving of the pre-mowing processing device 4 and the feed chain 7 is stopped. The tuning clutch 46 and the pouring clutch 48 are turned off. To drive only the feed chain 7, the cutting clutch 49 is turned off.

When changing the direction of the traveling machine body during the cutting and threshing work in the field, while the traveling machine body 1 is stopped or retracted, the grain culm in the middle of the pre-mowing treatment device 4 and the feed chain 7 is removed. When it is desired to carry the threshing / sorting work by transporting it into the handling room 10, the pouring clutch 48 and the reaping clutch 49 may be turned on and the synchronizing clutch 46 may be turned off.

3, 4, and 6 show a plurality of dust-sending valves 50 provided in the handling chamber 10, the dust-sending valves 50 being in the handling chamber 10 and on the upper side of the handling barrel 11. The dust delivery valve 50 is arranged so as to face the handle teeth 11a and is configured to rotate in the opening direction and the closing direction via the control motor 51 and the interlocking link mechanism 52 as an actuator capable of normal and reverse rotation. ing. In this case, in FIG. 6, the sowing drum 11 is rotated in the direction of arrow A, and the so-called pre-spinning operation is performed in which the tip of the grain culm supplied by the feed chain 7 is threshed at the lower side of the drum. , Dust chain 50 feed chain 7
The direction in which the side closer to the end is displaced toward the end side of the handling cylinder 11 (arrow B direction) is called the opening direction, and conversely the direction of arrow C (the side closer to the feed chain 7 of the dust delivery valve 50 is displaced toward the starting end side of the handling cylinder 11). The direction in which the dust feed valve 50 is rotated is called the closing direction. Then, the larger the angle α of the dust feed valve 50 with respect to the opening direction, the more quickly the threshing object in the handling chamber 10 is likely to be moved toward the terminal end of the handling barrel 11.

FIG. 7 illustrates the relationship between the vehicle speed and the opening angle of the dust feed valve 50 when the vehicle speed synchronization control is performed. The state setter (stepless adjustable variable resistance) is set according to the state of the grain. When the setting scale of the vessel 65 is 1, the paddy has a large number of branch stems, when the setting scale is 2-3, it is a standard grain culm, and when the setting scale is 4-5, it is a wet grain culm. . Further, in the processing-object-specific setting device (not shown), different setting signals are input to the controller unit 60 for rice and wheat. Therefore, the curve D in FIG. 7 indicates that the treated material is rice and the state setter 6
5 shows a tuning relationship between the vehicle speed and the opening angle of the dust sending valve 50 when the vehicle speed tuning control is performed when the setting scale of 5 is 1.
Indicates that the treated material is rice and the setting scale of the state setting device 65 is 2
The curve F shows the tuning relationship when the processed material is rice and the setting scale of the state setter 65 is 5, or the processed material is wheat and the setting scale is 4. It is a thing. When the treated product is rice, the regions of the curves D to F can be set steplessly. Further, in FIG. 7, the position G is a predetermined value before the overload by prohibiting the dust control valve opening / closing control for synchronizing the vehicle speed for at least a certain time when the engine 35 is decelerated in the overloaded state. Shows the opening angle of the. For example, when the vehicle speed is synchronized with the curve D, the controller unit 60 causes the actuator 5 to keep the opening angle of the dust feeding valve 50 at (-5 degrees).
1 is driven and controlled.

The opening angle α of the dust feed valve 50 is (-15 degrees) when fully closed (return side), (+5 degrees) at the standard position, and (+25 degrees) when fully opened (feed side). On the other hand, when it is determined that the load on the engine 35 has been reduced after the vehicle speed tuning control is prohibited for a certain period of time, the vehicle speed tuning control is returned to the same curve again. The opening / closing angle of the dust feed valve 50 can be detected by an angle sensor 58 such as a rotary encoder provided in the control motor 51.

As described above, the vehicle speed synchronization control is executed during the normal mowing and threshing work. However, when the vehicle speed is forcibly decelerated, the vehicle speed is controlled in order to avoid an engine stop due to the engine being overloaded. Since the synchronous control is prohibited and the actuator is driven and controlled so as to maintain the position of the dust delivery valve at the preset opening angle (the opening angle set by the curve in FIG. 7) before the engine becomes overloaded, ,
Straw dust generated due to grain stalks located in the handling room is quickly discharged to the end of the handling barrel to eliminate the accumulation of dust in the handling room. Therefore, swing sorting and wind sorting performance below the handling room. Can be prevented from deteriorating. If you set the time to hold the position of the dust sending valve on the side with a large opening angle for a certain time or more, a large amount of straw and dust do not stay in the handling room forever, so the load on the handling cylinder can be reduced quickly. As compared with the case of synchronizing the vehicle speed to the deceleration side, the engine load can be easily restored to the normal side, the rotation speed of the handling cylinder can be increased early, and failures such as clogging due to dust in the handling room can be reduced.

Incidentally, instead of the load state of the engine 35, a handle barrel load sensor 59 for detecting the load state of the handle barrel 11.
The vehicle speed tuning control may be prohibited based on the detected value of.

[Brief description of drawings]

FIG. 1 is a side view of a combine.

FIG. 2 is a plan view of the combine.

FIG. 3 is a side sectional view of the threshing apparatus.

FIG. 4 is a sectional view taken along the line IV-IV of FIG.

FIG. 5 is a diagram showing a power transmission path of a combine.

FIG. 6 is a block diagram of opening / closing control means of the dust sending valve.

FIG. 7 is a diagram showing a relationship between an opening angle of a dust sending valve and vehicle speed in vehicle speed synchronization control.

[Explanation of symbols]

 1 Traveling machine 3 Threshing device 4 Mowing pretreatment device 7 Feed chain 10 Handling room 11 Handling barrel 50 Dust valve 51 Control motor 52 Link mechanism 55, 56, 57 Actuator 58 Angle sensor 59 Handling barrel load sensor 60 Controller unit 63 Fuel injection amount Sensor 64 Vehicle speed sensor

Claims (2)

[Claims] 1. A cutting pretreatment device is arranged in the front part of a traveling machine body, a threshing device is arranged behind it, a feed chain is arranged on one side of a handling room provided with a handling barrel in the threshing device, and a processed material in the handling room. In a combine that is configured to open and close by rotating an actuator in synchronization with the vehicle speed of the traveling body of the dust-discharging valve for discharge, when decelerating with the engine of the combine overloaded, at least a certain time A control means for driving and controlling an actuator so as to hold the position of the dust sending valve at a predetermined opening angle before the overload by prohibiting the opening / closing control of the dust sending valve in synchronization with the vehicle speed is provided. Dust control valve control device for combine threshing device. 2. The control for maintaining the opening / closing angle of the dust-sending valve according to claim 1, wherein when it is determined that the overload is reduced thereafter, the control means executes the control for returning to the vehicle speed synchronization control. A dust control valve control device for a combine combine threshing device.