JP5078844B2 - Thresher - Google Patents

Description

  The present invention relates to a threshing machine capable of efficiently recovering grains separated from cereal straws.

  When performing a harvesting operation in a farm field, a threshing machine (combine) is often used for harvesting and threshing cereal grains and collecting grains. The combine harvests the culm with a cutting blade while the crawler is running, transports the harvested culm to the handling cylinder, and threshes. Then, the chaff sheave arranged below the barrel is used to sort the cocoons and grains separated from the cereal, and the selected grains are allowed to leak from the chaff sheave and collected in the grain tank via the screw. To do. The fine dust that leaks from the chaff sheave is discharged from the dust outlet provided at the rear of the combine due to the wind action of the red pepper placed under the chaff sheave, and part of the grain is also discharged with the dust. Discharged from.

  When the amount of harvested cereals increases, the amount of grains separated from the cereals increases, and the amount of grains discharged from the dust outlet also increases. For this reason, when the amount of harvested cereals increases, it is desirable to increase the amount of grains recovered in the grain tank. In order to meet this demand, a grain loss detector that detects the amount of grain is placed in the dust outlet, and based on the amount of grain detected by the grain loss detector, the opening / closing degree of the chaff sheave and the air volume of the tang are measured. The combine which increases the collection | recovery amount of the grain to a grain tank when adjusting and the grain discharged | emitted from a dust outlet increases is proposed from before (refer patent document 1).

In the combine described in Patent Document 1, two hydraulic cylinders are connected to the chaff sheave and tang, respectively, and two electromagnetic valves that switch supply and discharge of pressure oil are connected to the two hydraulic cylinders, respectively. is there. The combine compares the output of the Glen detector with the amount of grain allowed to be discharged from the dust outlet (hereinafter referred to as “allowable loss amount”), and the amount of grain discharged from the dust outlet (hereinafter referred to as loss). The amount of loss) is smaller than the allowable loss amount by controlling the operation of the solenoid valve when the allowable loss amount exceeds the allowable loss amount.
JP 61-234714 A

  However, the combine described in Patent Document 1 has a problem in that while adjusting the opening and closing degree of the chaff sheave and the air volume of the tang, the amount of grain exceeding the allowable loss amount is discharged from the dust outlet. .

  The present invention has been made in view of such circumstances, and an object of the present invention is to provide a processing chamber located upstream of the dust outlet in the flow path of the grain from the handling chamber to the dust outlet. A detecting means for detecting the amount of grain is provided at the outlet, and the operation of the amount adjusting means is controlled based on the detection result detected by the detecting means to reduce the amount of grain discharged from the outlet. An object of the present invention is to provide a threshing machine that can prevent the amount of grain discharged from the dust outlet from exceeding the allowable loss amount.

  Another object of the present invention is to provide a dust delivery valve that adjusts the amount of straw and grain delivered in a handling chamber disposed upstream of the dust outlet in the grain flow path. And using the dust delivery valve as the discharge amount adjusting means, and when the amount of grain detected by the detection means is outside the predetermined range as the amount of grain discharged from the discharge port, The operation of the dust delivery valve is controlled to reduce the amount of straw and grain delivered to the processing chamber, so that the amount of grain discharged from the dust outlet exceeds the allowable loss amount in advance. The object is to provide a thresher that can be prevented.

  Another object of the present invention is to provide a processing cylinder valve that adjusts the amount of straw and grain delivered in a processing chamber disposed upstream of the dust outlet in the grain flow path. When the processing cylinder valve is used as the discharge amount adjusting means, and the amount of grain detected by the detection means is outside the predetermined range as the amount of grain discharged from the discharge port, Control the operation of the processing barrel valve to reduce the amount of grain discharged from the outlet, and to prevent the amount of grain discharged from the dust outlet from exceeding the allowable loss amount. It is to provide a threshing machine that can do this.

  Another object of the present invention is to provide a plurality of sheave plates for sorting the straws and grains that flow down from the handling chamber, and the amount of the grains detected by the detecting means is the outlet. When the amount of grain discharged from the plurality of sheave plates is outside a predetermined range, the plurality of sheave plates are operated together with the discharge amount adjusting means so that the amount of grain leaking from the plurality of sheave plates is reduced, and the discharge amount is adjusted. An object of the present invention is to provide a threshing machine that can surely prevent the amount of grain discharged from a dust hole from exceeding the allowable loss amount.

  Another object of the present invention is to provide a means for changing the predetermined range so that the user can change the predetermined range to an optimum range according to the variety of cereal grains and the field condition. It is to provide a thresher that can.

  Another object of the present invention is to reduce the amount of cereals to be harvested by forcibly decelerating a traveling unit, for example, a crawler, traveling in a field when the operation of the discharge amount adjusting means is impossible. It is to provide a threshing machine that can prevent the amount of grain discharged from the dust outlet from exceeding the allowable loss amount.

  Another object of the present invention is that when the amount of grain detected by the detecting means is outside the predetermined range, the amount of grain discharged from the outlet is outside the predetermined range. An object of the present invention is to provide a threshing machine capable of notifying the user that the amount of grain is outside the predetermined range and the discharge amount adjusting means is automatically controlled.

  Another object of the present invention is to gradually return the discharge amount adjusting means to the set position when releasing the control of the discharge amount adjusting means, and a sudden load acts on the discharge amount adjusting means. An object of the present invention is to provide a threshing machine that can prevent the occurrence of damage and avoid damage to the discharge amount adjusting means.

  The threshing machine according to the present invention includes a processing room for threshing the harvested cereal and a processing room connected to the processing room and having a discharge port for discharging the cocoon and the grain and separating the grain from the cocoon and the grain. A detecting means for detecting the amount of grain discharged from the outlet, an amount adjusting means for adjusting the amount of grain discharged from the outlet, and detected by the detecting means. And determining means for determining whether or not the amount of the grain is within a predetermined range; and control means for controlling the operation of the discharge amount adjusting means based on the determination result of the determining means. To do.

  In the present invention, in the flow path of the grain from the handling chamber to the dust outlet, a detecting means for detecting the amount of grain is provided at the outlet of the processing chamber located upstream of the dust outlet, the detecting means Based on the detection result detected at, the operation of the discharge amount adjusting means is controlled to reduce the amount of grain discharged from the discharge port.

  In the threshing machine according to the present invention, a cylindrical barrel is accommodated in the handling chamber, and the discharge amount adjusting means is disposed around the handling barrel in the handling chamber, and the straw and grains A dust delivery valve that adjusts the delivery amount of the cylinder, and the dust delivery valve is pivotally supported by a dust delivery valve shaft whose radial direction is the axial direction of the handling cylinder, and supplies power to the dust delivery valve. A first drive source; and wherein the control means determines that the dust delivery valve is the dust delivery valve when the judgment means judges that the amount of grain detected by the detection means is outside a predetermined range. Means is provided for driving the first drive source so as to rotate in one direction around the valve shaft.

  In the present invention, in the grain flow path, a dust feed valve for adjusting the amount of straw and grain delivered is provided in a handling chamber disposed upstream of the dust outlet, and the dust feed When a valve is used as the discharge amount adjusting means and the amount of grain detected by the detecting means is outside the predetermined range, the operation of the dust feeding valve is controlled to Reduce the amount of grain delivered.

  In the threshing machine according to the present invention, a cylindrical processing cylinder is accommodated in the processing chamber, and the discharge amount adjusting means is arranged around the processing cylinder in the processing chamber, and the straw and grains The processing cylinder valve is pivotally supported on a processing cylinder valve shaft whose axial direction is the radial direction of the processing cylinder and supplies power to the processing cylinder valve. A second drive source; and when the determination means determines that the amount of grain detected by the detection means is outside a predetermined range, the control means is configured such that the processing cylinder valve is the processing cylinder. Means is provided for driving the second drive source so as to rotate in one direction around the valve shaft.

  In the present invention, a processing cylinder valve is provided in the processing chamber arranged upstream of the dust outlet in the flow path of the grain, and the processing cylinder valve for adjusting the feed amount of the straw and the grain is provided. When the valve is used as the discharge amount adjusting means, and the grain amount detected by the detection means is outside the predetermined range, the operation of the processing cylinder valve is controlled and discharged from the discharge port. Reduce grain volume.

  The threshing machine according to the present invention is provided side by side below the handling chamber, and a plurality of sheave plates opposed to each other, and a direction substantially perpendicular to the vertical direction and the direction in which the plurality of sheave plates are arranged in the axial direction A plurality of support shafts pivotally attached to the plurality of sheave plates, a connecting rod arranged along the alignment direction, and connecting the plurality of sheave plates via the pivot shaft, and the connection A third drive source for supplying power to the scissors, and by driving the third drive source, the connecting scissors are moved in the alignment direction so that the plurality of sheave plates are arranged in the same direction around the respective support shafts. When the determination means determines that the amount of grain detected by the detection means is outside a predetermined range, the plurality of sheave plates are centered on each spindle. The third drive source is driven so as to rotate in one direction. Characterized in that it comprises a stage.

  In the present invention, when a plurality of sheave plates for sorting the straws and grains that flowed down from the handling room are disposed, and the amount of grains detected by the detection means is greater than or equal to an allowable value, the plurality A plurality of sheave plates are operated together with the discharge amount adjusting means so that the amount of grain leaking from the sheave plates is reduced.

  The threshing machine according to the present invention is characterized by comprising means for changing the predetermined range.

  In the present invention, the user operates the means for changing the predetermined range in accordance with the variety of cereals, the field condition, etc., and changes the predetermined range to the optimum range.

  In the threshing machine according to the present invention, it is determined that the traveling unit that travels in the field, the unit that determines whether or not the discharge amount adjusting unit can be operated, and the discharge amount adjusting unit cannot be operated by the unit. Means for forcibly decelerating the traveling part.

  In this invention, when the operation | movement of the said discharge | emission amount adjustment means is impossible, a driving | running | working part is forcedly decelerated and the quantity of the grain cocoon cut is reduced.

  In the threshing machine according to the present invention, when it is determined that the grain amount detected by the detection unit is outside the predetermined range, the grain amount detected by the detection unit is outside the predetermined range. It is characterized by having a means to display.

  In the present invention, when the amount of grain detected by the detection means is outside the predetermined range, it is indicated to the user that the amount of grain discharged from the outlet is outside the predetermined range. To do.

  The threshing machine according to the present invention includes a position detection unit that detects a position of the discharge amount adjustment unit, a position setting unit that sets a position of the discharge amount adjustment unit, and the discharge amount detected by the position detection unit. A bias determining means for determining whether or not the position of the adjusting means is deviated from the position set by the position setting means, and the position of the discharge amount adjusting means is set to the position setting means by the bias determining means. The discharge amount adjusting means is set by the position setting means when the detection means detects a grain amount within a predetermined range. Means for moving in a stepwise manner to the specified position.

  In the present invention, when the control of the discharge amount adjusting means is canceled, the discharge amount adjusting means is gradually returned to the set position to prevent a sudden load from acting on the discharge amount adjusting means.

  In the threshing machine according to the present invention, in the flow path of the grain from the handling chamber to the dust outlet, the detecting means for detecting the grain amount at the outlet of the processing chamber located upstream from the dust outlet. And controlling the operation of the discharge amount adjusting means on the basis of the detection result detected by the detection means, reducing the amount of grain discharged from the discharge port, and removing the grain discharged from the dust discharge port. It is possible to prevent the grain amount from exceeding the allowable loss amount.

  In the threshing machine according to the present invention, in the grain flow path, a dust feeding valve that adjusts the amount of straw and grain delivered in a handling chamber disposed upstream of the dust outlet. And the dust delivery valve is used as the discharge amount adjusting means, and the amount of grain detected by the detection means is outside the predetermined range as the amount of grain discharged from the discharge port. By controlling the operation of the dust valve, the amount of straw and grain delivered to the processing chamber is reduced, and the amount of grain discharged from the dust outlet is prevented from exceeding the allowable loss amount. be able to.

  In the threshing machine according to the present invention, a processing cylinder valve that adjusts the amount of straw and grain delivered in a processing chamber disposed upstream of the dust outlet in the grain flow path. The processing cylinder valve is used as the discharge amount adjusting means, and when the amount of grain detected by the detection means is outside the predetermined range as the amount of grain discharged from the discharge port, the processing Controlling the operation of the trunk valve to reduce the amount of grain discharged from the outlet, and to prevent the amount of grain discharged from the dust outlet from exceeding the allowable loss amount it can.

  In the threshing machine according to the present invention, a plurality of sheave plates for sorting the straws and grains that flowed down from the handling room are arranged, and the amount of the grains detected by the detecting means is from the outlet. When the amount of discharged grain is outside the predetermined range, the plurality of sheave plates are operated together with the discharge amount adjusting means so that the amount of grain leaking from the plurality of sheave plates is reduced, and the dust discharge It is possible to prevent the amount of grain discharged from the mouth from exceeding the allowable loss amount.

  In the threshing machine according to the present invention, by providing means for changing the predetermined range, the user can change the predetermined range to the optimum range according to the variety of cereal grains and the field condition.

  In the threshing machine according to the present invention, when the operation of the discharge amount adjusting means is impossible, the traveling unit is forcibly decelerated to reduce the amount of cereals to be cut, and the dust outlet It is possible to prevent the amount of grain discharged from the product from exceeding the allowable loss amount.

  In the threshing machine according to the present invention, when the grain amount detected by the detection means is outside the predetermined range, it is displayed that the grain amount discharged from the outlet is outside the predetermined range. By providing the means to do, it is possible to notify the user that the amount of grain discharged from the discharge port is outside the predetermined range.

  In the threshing machine according to the present invention, when releasing the control of the discharge amount adjusting means, the discharge amount adjusting means is gradually returned to the set position, and a sudden load acts on the discharge amount adjusting means. This can be prevented, and damage to the discharge amount adjusting means can be avoided.

(Embodiment 1)
Hereinafter, the present invention will be described in detail based on the drawings showing the combine according to the first embodiment. FIG. 1 is an external perspective view of a combine.
In the figure, 1 is a traveling crawler, and a threshing device 2 is provided above the traveling crawler 1. On the front side of the threshing device 2, there is provided a cutting unit 3 including a weed plate 3a for discriminating between a harvested cereal and a non-reached cereal, a cutting blade 3b for reaping the cereal, and a raising device 3c for causing the cereal. It is. On the left side of the threshing device 2 is provided a grain tank 4 for storing the grain, and on the right part of the threshing device 2 is provided a feed chain 5 for conveying cereals. The feed chain 5 is opposed to a clamping member 6 that clamps the cereal grains. A vertical conveying device 7 is disposed in the vicinity of the start end of the feed chain 5. The grain tank 4 is provided with a cylindrical discharge auger 4 a for discharging the grain from the grain tank 4, and a cabin 8 is provided on the front side of the grain tank 4.

  The aircraft travels by driving the traveling crawler 1. As the machine travels, the cereals are taken into the mowing unit 3 and mowed. The harvested corn straw is conveyed to the threshing device 2 via the vertical conveying device 7, the feed chain 5 and the clamping member 6, and threshed in the threshing device 2.

FIG. 2 is a side sectional view schematically showing the internal configuration of the threshing apparatus 2.
As shown in FIG. 2, a handling room 10 for threshing cereals is provided at the front upper part of the threshing device 2. A cylindrical handling cylinder 11 whose axial direction is the longitudinal direction is mounted in the handling chamber 10, and the handling cylinder 11 is rotatable about the axis. A large number of teeth 12, 12,... 12 are spirally attached to the peripheral surface of the handle cylinder 11. On the lower side of the handling cylinder 11, a crimp net 15 is disposed for coping with the handling teeth 12, 12,. The said handling cylinder 11 rotates with the driving force of the engine 40 mentioned later, and threshs a cereal.

  Four dust feed valves 10 a, 10 a, 10 a, 10 a are juxtaposed along the front-rear direction on the upper wall of the handling chamber 10, and the dust feed valves are used for the straw and grain to be sent to the rear part of the handling chamber 10. Adjust the amount.

  A processing chamber 13 is connected to the rear of the handling chamber 10. A cylindrical processing cylinder 13b whose axial direction is the longitudinal direction is mounted in the processing chamber 13, and the processing cylinder 13b is rotatable around the axis. A large number of teeth 13c, 13c,..., 13c are spirally attached to the processing cylinder 13b. A treatment net 13d that disperses the ridges in cooperation with the teeth 13c, 13c,..., 13c is disposed below the treatment cylinder 13b. The processing cylinder 13b is rotated by the driving force of the engine 40, and performs a process of separating the grain from the straw and the grain delivered from the handling chamber 10.

  A discharge port 13 e is opened below the rear end of the processing chamber 13. A grain amount detection sensor 34 including a piezoelectric element is disposed below the discharge port 13e. From the discharge port 13e, the koji and the grain that have been subjected to the above-described processing are discharged and contact the grain amount detection sensor 34. At this time, a voltage signal is output from the piezoelectric element of the grain amount detection sensor 34, and the grain amount discharged from the outlet 13e is detected. The grain amount detection sensor 34 is not limited to a sensor having a piezoelectric element, and an optical sensor having a light emitting element and a light receiving element is used as the grain amount detection sensor 34, overflowing from the rear end of the grain sieve 20, And the amount of grain passing between the light receiving elements may be detected. In addition, an ultrasonic sensor having a transmitter and a receiver may be used as the grain amount detection sensor 34 to detect the amount of grain that overflows from the rear end of the grain sieve 20 and passes between the transmitter and the receiver. .

  Four processing cylinder valves 13 a, 13 a, 13 a, 13 a are juxtaposed along the front-rear direction on the upper wall of the processing chamber 13, and the processing cylinder valves 13 a, 13 a, 13 a, 13 a go to the rear part of the processing chamber 13. Adjust the amount of straw and grains to be delivered.

Below the crimp net 15 is provided a swinging sorter 16 for sorting grains and straws. The rocking sorter 16 is provided on the back side of the rocking sorter 17 for making the grains and straws uniform and selecting the specific gravity, and for rough sorting of the grains and straws. A chaff sheave 18 to be performed, and a stroller rack 19 provided on the rear side of the chaff sheave 18 for dropping the grains mixed in the straw. The Strollac 19 has a plurality of through holes (not shown). A swing arm 21 is connected to the front portion of the swing sorter 17.
The swing arm 21 is configured to swing back and forth. By the swinging of the swinging arm 21, the swing sorting device 16 swings, and selection of straw and grains is performed.

  The swing sorting device 16 is provided below the chaff sheave 18 and further includes a grain sheave 20 that performs fine sorting of grains and straw. Below the grain sieve 20 is provided a first grain plate 22 inclined so that the front part is located below the rear part, and the grain is placed on the front side of the first grain board 22 with the grain tank. The first screw 23 to be fed to 4 is provided. The grain that has dropped from the grain sieve 20 onto the first grain plate 22 slides down toward the first screw 23. The dropped grain is conveyed to the grain tank 4 by the first screw 23.

An inclined plate 24 that is inclined so that the rear portion is located below the front portion is connected to the rear portion of the first grain plate 22. The 2nd grain board 25 inclined so that the front part may be located under the rear part at the rear-end part of this inclination board 24 is connected. A second screw 26 is provided on the upper side of the connecting portion between the second grain plate 25 and the inclined plate 24 to convey the straw and the grain.
The fallen object that has fallen from the through hole of the Strollac 19 to the inclined plate 24 or the second grain plate 25 slides toward the second screw 26. The fallen fallen object is transported to the processing rotor 14 provided on the left side of the handling cylinder 11 by the second screw 26 and threshed by the processing rotor 14.

  A tang 27 that blows air backward is provided in front of the first screw 23 and below the swing sorter 17. Two current plates 28, 28 are disposed between the tongue 27 and the first screw 23.

  A passage plate 36 is connected to the rear end portion of the second grain plate 25. A lower suction cover 30 is provided above the passage plate 36. Between the lower suction cover 30 and the passage plate 36 is an exhaust passage 37 through which dust is discharged.

  An upper suction cover 31 is provided above the lower suction cover 30. Between the upper suction cover 31 and the lower suction cover 30, an axial fan 32 for sucking and discharging soot is disposed. A dust exhaust port 33 is provided behind the axial flow fan 32.

  The air flow generated by the operation of the tang 27 is rectified by the rectifying plates 28 and 28, then passes through the swing sorting device 16 and reaches the dust outlet 33 and the exhaust passage 37.

  On the upper side of the upper suction cover 31, below the processing chamber 13, there is provided a flow basin 35 inclined so that the front part is located below the rear part. Exhaust discharged from the discharge port 13e of the processing chamber 13 slides down the downflow basin 35 and falls onto the Strollac 19.

  The driving force of the engine 40 includes the driving of the traveling crawler 1, the cutting operation of the cutting unit 3, the rotation of the handling cylinder 11, the rotation of the processing cylinder 13 b, the swinging of the swing sorting device 16 and the wind-up operation of the carp 27. Is done by. FIG. 3 is a transmission mechanism diagram schematically showing the transmission path of the driving force of the engine 40.

  As shown in FIG. 3, the engine 40 is connected to a traveling mission 42 via an HST (Hydro Static Transmission) 41. The HST 41 has a hydraulic pump (not shown), a mechanism (not shown) that adjusts the flow rate of hydraulic oil supplied to the hydraulic pump and the pressure of the hydraulic pump, and a transmission circuit 41a that controls the mechanism. ing. The transmission circuit 41a controls the mechanism on the basis of an input signal from a control unit 100 (see FIG. 7), which will be described later, to shift the traveling crawler 1.

  The traveling mission 42 has a gear (not shown) that transmits driving force to the traveling crawler 1. The traveling mission 42 is provided with a vehicle speed sensor 43 having a hall element. The vehicle speed sensor 43 detects the rotational speed of the gear and outputs a signal indicating the vehicle speed of the airframe corresponding to the rotational speed of the gear.

  The engine 40 is connected to the handling cylinder 11 and the processing cylinder 13b through an electromagnetic threshing clutch 44, and is connected to an eccentric crank 45. The eccentric crank 45 is connected to the swing arm 21. As the eccentric crank 45 is driven, the swing sorting device 16 swings. The engine 40 is connected to the tang 27 through a threshing clutch 44. The engine 40 is connected to the reaping portion 3 via a threshing clutch 44 and an electromagnetic reaping clutch 46.

  The driving force of the engine 40 is transmitted to the traveling crawler 1 via the traveling mission 42, and the aircraft travels. Further, the driving force of the engine 40 is transmitted to the cutting unit 3 via the cutting clutch 46, and the cereal is harvested by the cutting unit 3.

  The driving force of the engine 40 is transmitted to the handling cylinder 11 via the threshing clutch 44, and the cereal is threshed by the handling cylinder 11. Further, the driving force of the engine 40 is transmitted to the processing cylinder 13 b via the threshing clutch 44, and the grains are separated from the straw and the grains threshed by the handling cylinder 11.

  In addition, the driving force of the engine 40 is transmitted to the swing sorting device 16 via the threshing clutch 44 and the eccentric crank 45, and the processing chamber 13 that accommodates the straw and grains leaked from the handling cylinder 11 and the processing cylinder 13b. The rice cake and the grain discharged from the discharge port 13e are selected. Further, the driving force of the engine 40 is transmitted to the tangs 27 through the threshing clutch 44, and the dust outlet 33 and the exhaust passage 37 are caused by the wind action of the potatoes 27 and the grains selected by the swing sorter 16. To discharge from.

  With the above configuration, the cereals harvested by the reaping unit 3 are threshed by the threshing device 2, and the grains separated from the cereals are selected and stored in the grain tank 4. The adjustment of the grain selection is performed by the user operating a switch group for adjusting the selection of the grain arranged in the cabin 8.

  FIG. 4 is a schematic front view of a switch group and a lamp group provided on the dashboard panel in the cabin 8. As shown in FIG. 4, a cutting switch 80, a dust feed valve angle setting switch 81, a processing cylinder valve angle setting switch 82, an allowable value setting switch 83, an automatic control lamp 84 and a warning lamp 85 are arranged in parallel on the dashboard panel. is there.

  The cutting switch 80 has a cylindrical shape protruding to the front side. The cutting switch 80 is fixed in a state where it is pushed down by pressing. Further, when pressed in a pressed state, the original position is restored by the elastic force of an elastic member (not shown) built in the cutting switch 80. When the cutting switch 80 is pushed down, the cutting clutch 46 and the threshing clutch 44 are engaged, and when the cutting switch 80 is restored, the cutting clutch 46 and the threshing clutch 44 are disconnected.

The dust feed valve angle setting switch 81 has a cylindrical shape that can rotate about an axis that protrudes to the front side. As shown in FIG. 4, a triangular mark is attached to the front of the dust feed valve angle setting switch 81. Further, numbers 1 to 5 are attached around the dust feed valve angle setting switch 81. The marks are set to the numbers 1 to 5 and the angles of the dust feed valves 10a, 10a, 10a, and 10a are set in five stages (hereinafter, the angle set by the dust feed valve angle setting switch 81 is set). Set angle θ ₁ ). Inside the Okuchiriben angle setting switch 81 has a built-in potentiometer, not shown, are to be outputted to the control unit 100 to be described later a voltage signal corresponding to the set angle theta _1.

The processing cylinder valve angle setting switch 82 has the same configuration as that of the dust feeding valve angle setting switch 81, and a mark is provided on the front surface of the processing cylinder valve angle setting switch 82. Are numbered 1-5. The angle of the processing cylinder valve 13a is set in five stages by matching the marks with numbers 1 to 5 (hereinafter, the angle set by the processing cylinder valve angle setting switch 82 is referred to as a setting angle θ ₂ ). . The inside of the processing cylinder valve angle setting switch 82 has a built-in potentiometer, are to output to the control unit 100 to be described later a voltage signal corresponding to the set angle theta _2.

The permissible value setting switch 83 has a cylindrical shape that can rotate around an axis that protrudes to the front side. A triangle mark is attached to the front face of the allowable value setting switch 83. In addition, an arcuate figure that is reduced in width from one to the other is attached around the permissible value setting switch 83. A value (threshold value P) of a grain amount that is allowed to be discharged from the discharge port 13e is set by aligning the mark with an arbitrary position of the arc-shaped figure. A potentiometer (not shown) is built in the allowable value setting switch 83. When the allowable value setting switch 83 is turned to the left, the output voltage of the potentiometer is reduced, and when it is turned to the right, the output voltage of the potentiometer is growing.
The automatic control lamp 84 and the warning lamp 85 are turned on or off based on an output signal of the control unit 100 described later.

  Next, a transmission mechanism for operating the dust delivery valves 10a, 10a, 10a, 10a and the processing cylinder valves 13a, 13a, 13a, 13a will be described. FIG. 5 is a schematic plan view showing the dust delivery valves 10a, 10a, 10a, 10a and the processing cylinder valves 13a, 13a, 13a, 13a and their transmission mechanisms. The configuration of the transmission mechanism of the processing cylinder valve 13a is the same as that of the transmission mechanism of the dust delivery valve 10a, and the dust transmission valve 10a and the dust transmission valve corresponding to the configuration of the transmission mechanism of the processing cylinder valve 13a and the processing cylinder valve 13a. A name or a code | symbol is attached | subjected to the structure of the transmission mechanism of 10a with a parenthesis, and the detailed description is abbreviate | omitted.

  The plurality of dust feeding valves 10a, 10a, 10a, and 10a (processing cylinder valves 13a, 13a, 13a, and 13a) are disposed between the processing cylinder 11 (processing cylinder 13b) and the upper wall of the processing chamber 10 (processing chamber 13). They are juxtaposed along the front-rear direction and face each other. As shown in FIG. 5, four dust feeding valve shafts 65, 65, 65, 65 (processing cylinder valve shafts 65 ', 65', 65 ', 65') are provided on the upper wall of the handling chamber 10 (processing chamber 13). The dust supply valve shaft 65 (processing cylinder valve shaft 65 ') protrudes inside the processing chamber 10 (processing chamber 13) along the radial direction of the cylindrical processing cylinder 11 (processing cylinder 13b). . The dust feed valves 10a, 10a, 10a, 10a (processing cylinder valves 13a, 13a, 13a, 13a) are provided with dust feeding valve shafts 65, 65, 65, 65 (processing cylinder valve shafts 65 ', 65', 65 ', 65). ') Is pivotally attached to each.

  As shown in FIG. 5, a casing 64 (64 ′) extending in the front-rear direction is vertically arranged on one side of each of the dust feeding valves 10a, 10a, 10a, 10a (processing cylinder valves 13a, 13a, 13a, 13a). It is connected via four pivots 66, 66, 66, 66 (66 ', 66', 66 ', 66') whose direction is the axial length direction.

  A transmission rod 63 (63 ') that is substantially perpendicular to the dust delivery valve 10a (processing cylinder valve 13a) is provided near the dust delivery valve shaft 65 (processing cylinder valve axis 65') of the dust delivery valve 10a (processing cylinder valve 13a). It is extended. One end of a crank rod 61 (61 ') is connected to the extending end of the transmission rod 63 (63') via a pivot 62 (62 ') extending in the vertical direction. The other end of the crank rod 61 (61 ′) is connected to the crank 60 (60 ′). The crank 60 (60 ') is connected to a motor M1 (M2) via a speed reducer 67 (67').

  When the motor M1 (M2) rotates forward, the crank 60 (60 ') rotates in one direction and the crank rod 61 (61') moves in one direction as shown by the solid line arrow in FIG. To do. The transmission rod 63 (63 ') rotates in one direction around the pivot 62 (62') by the movement of the crank rod 61 (61 '), and the transmission rod 63 (63') is connected to the dust feed. The valve 10a (processing cylinder valve 13a) rotates in one direction around the dust feeding valve shaft 65 (processing cylinder valve shaft 65 '). As the dust feed valve 10a (processing cylinder valve 13a) rotates, the housing 64 (64 ') moves forward, and as shown by the solid line arrows in FIG. 5, other dust feed valves 10a, 10a, 10a ( The processing cylinder valves 13a, 13a, 13a) are also interlocked to rotate in one direction around the dust feeding valve shafts 65, 65, 65 (processing cylinder valve shafts 65 ', 65', 65 ').

  The straws and grains moving spirally toward the rear along the peripheral surface of the handling cylinder 11 (processing cylinder 13b) are dust-feeding valves 10a, 10a, 10a, 10a (processing cylinder valves 13a, 13a, 13a, 13a), by rotating in one direction, as shown by the solid line arrows in FIG. 5, contact the dust feed valves 10a, 10a, 10a, 10a (processing cylinder valves 13a, 13a, 13a, 13a) and move forward. The amount of reeds and grains that are rebounded in the handling chamber 10 (processing chamber 13) decreases.

  When the motor M1 (M2) rotates in the reverse direction, the crank 60 (60 ') rotates in the other direction and the crank rod 61 (61') moves in the other direction, as indicated by the dashed arrow in FIG. To do. The transmission rod 63 (63 ') rotates in the other direction around the pivot shaft 62 (62') by the movement of the crank rod 61 (61 '), and the transmission rod 63 (63') is connected to the dust feed. The valve 10a (processing cylinder valve 13a) rotates in the other direction around the dust feeding valve shaft 65 (processing cylinder valve shaft 65 '). As the dust feed valve 10a (processing cylinder valve 13a) rotates, the housing 64 (64 ') moves rearward, and as shown by the broken arrow in FIG. 5, the other dust feed valves 10a, 10a, 10a ( The processing cylinder valves 13a, 13a, 13a) are also interlocked to rotate in the other direction around the dust feeding valve shafts 65, 65, 65 (processing cylinder valve shafts 65 ', 65', 65 ').

  The dust feed valves 10a, 10a, 10a, and 10a (processing cylinder valves 13a, 13a, 13a, and 13a) move in a spiral manner along the circumferential surface of the handling cylinder 11 (processing cylinder 13b) by rotating in the other direction. As shown by broken line arrows in FIG. 5, the koji and the grain abut against the dust feeding valves 10 a, 10 a, 10 a, and 10 a (processing cylinder valves 13 a, 13 a, 13 a, and 13 a) and bounce backward to handle the handling chamber 10. The amount of straw and grain delivered in (processing chamber 13) increases.

  The motor M1 (M2) is provided with a rotary encoder E1 (E2). The motor M1 (M2) is driven in accordance with an operation command given from the control unit 100, and the rotational speed and rotational direction of the motor M1 (M2) are detected by the rotary encoder E1 (E2). The controller 100 receives a voltage signal of the dust feed valve angle setting switch 81 and receives a value indicating the rotational speed and rotational direction of the motor M1 (M2) detected by the rotary encoder E1 (E2).

FIG. 6 shows the relationship between the angle of the dust feed valve 10a (processing cylinder valve 13a) with respect to the longitudinal direction and the dust delivery valve angle setting switch 81 (processing cylinder valve angle setting switch 82), and the angle of the processing cylinder valve with respect to the longitudinal direction. It is explanatory drawing explaining the relationship with a process cylinder valve angle setting switch. In the figure, α _{1 to} α ₅ (β _{1 to} β ₅ ) denote dust feed valves 10a (process barrel valves 13a) corresponding to the numbers 1 to 5 of the dust feed valve angle setting switch 81 (process barrel valve angle setting switch 82). ) With respect to the front-rear direction, and the set angle θ ₁ (set angle θ ₂ ) is set to any _one of α _{1 to} α ₅ (β _{1 to} β ₅ ). Angle _{α 1 ~α 5 (β 1 ~β} 5) , the angle alpha ₁ of the (beta ₁₎ and the lower limit value, increases the angle alpha ₅ a (beta ₅₎ in this order as the upper limit. As the angle of the dust feed valve 10a (processing cylinder valve 13a) with respect to the front-rear direction increases, the amount of straw and grain delivered in the handling chamber 10 (processing chamber 13) decreases.
The control unit 100 matches the angle of the dust delivery valve 10a (processing cylinder valve 13a) with the front-rear direction to the angles α _{1 to} α ₅ (β _{1 to} β ₅ ) set by the dust delivery valve angle setting switch 81. Accordingly, an operation command is issued to the motor M1 (M2), and the motor M1 (M2) is driven and controlled by using the value indicating the rotation speed and the rotation direction of the motor M1 (M2) by the rotary encoder E1 (E2) as feedback information.

The control part 100 performs the process for reducing the grain discharged | emitted from the dust outlet 33 on predetermined conditions.
FIG. 7 is a block diagram illustrating a configuration of the control unit 100.
The control unit 100 includes a CPU 100a, a ROM 100b, a RAM 100c, and an EEPROM 100d that are connected to each other via an internal bus 100i. The CPU 100a reads the control program stored in the ROM 100b into the RAM 100c, and controls the operations of the dust feeding valve 10a and the processing cylinder valve 13a according to the control program.

FIG. 8 is a graph showing a function f indicating the relationship between the threshold value P and the output voltage of the allowable value setting switch 83 and a function g indicating the relationship between the threshold value Q and the output voltage of the allowable value setting switch 83.
The EEPROM 100d stores a function f indicating the relationship between the arbitrary output voltage V of the allowable value setting switch 83 and the threshold value P, and a function g indicating the relationship between the arbitrary output voltage V of the allowable value setting switch 83 and the threshold value Q. It is. As shown in FIG. 8, the threshold value Q for an arbitrary output voltage V is equal to or less than the threshold value P for an arbitrary output voltage V. Further, in the function f and the function g, the threshold value P and the threshold value Q are increased and decreased according to the increase and decrease of the output voltage V, respectively.

In the EEPROM100d, a value indicating the angle of Okuchiriben 10a obtained by integrating a value that indicates the rotational speed and rotational direction of the motor M1 by the rotary encoder E1 in CPU100a is, the Okuchiri valve angle theta _a is a variable Yes stored value indicating the angle of the process Doben 13 obtained by integrating a value that indicates the rotational speed and rotational direction of the motor M2 by the rotary encoder E2 at CPU100a is, the process which is the cylinder valve angle theta _b variables Stored.

  Further, the EEPROM 100d stores a lower limit value Vmin of the speed of the machine body that can cut the cereals.

  The control unit 100 further includes a dust feeding valve driving circuit 100g related to the motor M1 and a processing cylinder valve driving circuit 100h related to the motor M2, and the dust feeding valve driving circuit 100g and the processing cylinder valve driving circuit 100h controlled by the CPU 100a. Outputs drive commands to the motor M1 and the motor M2, respectively. Further, the control unit 100 outputs a shift command to the shift circuit of the HST 41 via the output interface 100f, and outputs a lighting or extinguishing signal to the automatic control lamp 84 and the warning lamp 85. Further, the control unit 100 outputs a disconnection signal to the reaping clutch 46 and the threshing clutch 44.

  The output signals of the cutting switch 80, the dust feed valve angle setting switch 81, the processing cylinder valve angle setting switch 82, the vehicle speed sensor, the grain amount detection sensor 34, the allowable value setting switch 83, the rotary encoder E1, and the rotary encoder E2 are input. The data is input to the control unit 100 via the interface 100e.

  FIG. 9 is a flowchart showing a processing procedure of operation control of the dust feeding valve 10a and the processing cylinder valve 13a executed by the control unit 100.

The CPU 100a of the control unit 100 takes in the output signal of the cutting switch 80 and determines whether or not the cutting switch 80 is on (step S1). When the cutting switch 80 is off (step S1: NO), the CPU 100a returns the process to step S1. When the cutting switch 80 is on (step S1: YES), the CPU 100a takes in the output voltage V of the allowable value setting switch 83 (step S2), refers to the function f and the function g, and sets the threshold value P. And the threshold value Q is set (step S3). The CPU100a takes the grain quantity sensing value _{A 1} by grain amount detection sensor 34 (step S4), and determines whether the grain quantity sensing value _{A 1} is equal to or larger than the threshold P (step S5). When grain quantity sensing value _{A 1} is less than the threshold P (step S5: NO), CPU100a returns the process to step S4.

When grain quantity sensing value _{A 1} is equal to or greater than the threshold P (step S5: YES), CPU100a outputs a lighting signal to the automatic control lamp 84 (step S6), and turns on the automatic control lamp 84.
Next, the CPU 100a executes a dust feed valve operation process (step S7), and executes a process cylinder valve 13a operation process, which will be described later (step S8). Then, the CPU 100a outputs a turn-off signal to the automatic control lamp 84 (step S9), executes a return valve process described later (step S10), and ends the process.

Next, the dust delivery valve operating process executed when the grain quantity detection sensor 34 detects a grain quantity equal to or greater than the threshold value P will be described. FIG. 10 is a flowchart showing the processing procedure of the dust delivery valve operating process.
CPU100a reads the value of Okuchiri valve angle theta _a from EEPROM100d (step S71), Okuchiriben angle theta _a determines whether the angle alpha ₅ (step S72). If Okuchiriben angle theta _a is not an angle alpha ₅ (step S72: NO), i.e. if Okuchiri valve angle theta _a is α _{n (n} = 1~4) are CPU 100a is Okuchiriben driving circuit outputs a positive rotation signal to the 100 g (step S73), the rotational speed and the value indicating the rotation direction of the motor M1 by the rotary encoder E1 as feedback information, forward rotation of the motor M1 to Okuchiriben angle theta _a is alpha _{n + 1} Let Then, the CPU 100a uses a timer to wait until a predetermined time has elapsed (step S74). The predetermined time corresponds to the time from when the angle of the dust feed valves 10a, 10a, 10a, and 10a is changed by the process at step S9 to when the discharge discharged from the discharge port 13e decreases.

When the predetermined time has elapsed (step S74: YES), CPU 100a is a grain quantity sensing value _{A 2} by grain amount detecting sensor 34 uptake (step S75), grain quantity sensing value _{A 2} is less than the threshold Q It is determined whether or not (step S76). When grain quantity sensing value _{A 2} is the threshold value Q or more (step S76: NO), the process returns to step S71. When grain quantity sensing value _{A 2} is less than the threshold Q (step S76: YES), CPU 100a ends the Okuchiriben operation process, the process proceeds to step S9. Also in the case Okuchiri valve angle theta _a is an angle alpha ₅ (step S72: YES), CPU100a ends the Okuchiriben operating process.

Next, the processing barrel valve operation process executed when the grain amount detection sensor 34 detects a grain amount equal to or greater than the threshold value P will be described. FIG. 11 is a flowchart showing the processing procedure of the processing cylinder valve operation processing.
CPU100a reads the value of the processing cylinder valve angle theta _b from EEPROM100d (step S81), the processing cylinder valve angle theta _b determines whether the angle beta ₅ (step S82).

If the processing cylinder valve angle theta _b is not an angle beta ₅ (step S82: NO), i.e. if the processing cylinder valve angle theta _b is β _{n (n} = 1~4) are CPU 100a, the process cylinder valve driving circuit outputs a positive rotation signal to 100h (step S83), the rotational speed and the value indicating the rotation direction of the motor M2 by the rotary encoder E2 as feedback information, forward rotation of the motor M2 to the processing cylinder valve angle theta _b is beta _{n + 1} Let Then, the CPU 100a waits until a predetermined time elapses using a timer (not shown) built in the CPU 100a (step S84). The predetermined time corresponds to the time from when the angle of the processing cylinder valves 13a, 13a, 13a, 13a is changed by the processing in step S83 to when the discharge discharged from the discharge port 13e decreases.

When the predetermined time has elapsed (step S84: YES), CPU 100a is a grain quantity sensing value _{A 3} by grain amount detecting sensor 34 uptake (step S85), grain quantity sensing value _{A 3} is smaller than the threshold value Q It is determined whether or not (step S86). When grain quantity sensing value _{A 3} is the threshold value Q or more (step S86: NO), CPU100a returns the process to step S81. When grain quantity sensing value _{A 3} is less than the threshold Q (step S86: YES), CPU100a ends the process Doben operating process.

When the processing cylinder valve angle theta _b is an angle beta ₅ (step S82: YES), CPU100a performs a vehicle speed reduction processing described later (step S87), the process ends Doben operating process.

Next, the vehicle speed reduction process that is executed when the grain amount detection sensor 34 detects a grain amount equal to or greater than the threshold value P will be described. FIG. 12 is a flowchart showing a processing procedure of vehicle speed reduction processing.
The CPU 100a takes in the detected vehicle speed value from the vehicle speed sensor 43 (step S871). Then, the CPU 100a compares the captured vehicle speed detection value with the lower limit value Vmin of the speed of the aircraft stored in the EEPROM 100d, and determines whether or not the vehicle speed detection value is equal to or higher than Vmin (step S872). When the vehicle speed detection value is equal to or higher than Vmin (step S872: YES), the CPU 100a outputs a low speed command to the transmission circuit 41a (step S873) to reduce the speed of the aircraft. Then, the CPU 100a uses a timer to wait until a predetermined time has elapsed (step S874). The predetermined time corresponds to the time from when the vehicle speed is reduced by the processing at step S873 until when the amount of the discharge discharged from the discharge port 13e decreases.

When the predetermined time has elapsed (step S874: YES), CPU100a takes the grain quantity sensing value _{A 4} according kernels amount detection sensor 34 (step S875), grain quantity sensing value _{A 4} is less than the threshold value Q It is determined whether or not there is (step S876). When grain quantity sensing value _{A 4} is the threshold value Q or more (step S876: NO), CPU100a returns the process to step S871. When grain quantity sensing value _{A 4} is less than the threshold Q (step S876: YES), CPU100a terminates the vehicle speed decrease process.

  When the vehicle speed detection value is less than Vmin (step S872: NO), the CPU 100a outputs a lighting signal to the warning lamp 85 (step S877), and the vehicle speed reduction process is terminated. If the vehicle speed detection value is less than Vmin and the grain amount detection value is greater than or equal to the threshold value Q, there is a possibility that an abnormality such as clogging in the grain sieve or chaff sieve has occurred, and the warning lamp 85 The possibility can be notified to the user by lighting.

Next, the return valve process executed when the grain quantity detection sensor 34 detects a grain quantity less than the threshold value Q will be described. FIG. 13 is a flowchart showing the processing procedure of the return valve processing.
CPU100a takes in a set angle theta ₁ which is set at Okuchiri valve angle setting switch 81 (step S101). The CPU100a compares the value with the set angle theta ₁ value Okuchiri valve angle theta _a to access EEPROM100d, determines whether Okuchiriben angle theta _a is equal to the setting angle theta ₁ (step S102 ). If Okuchiriben angle theta _a is not equal to the set angle theta ₁ (step S102: NO), CPU100a outputs Modoben signal to Okuchiri valve drive circuit 100 g (step S103), the motor M1 by the rotary encoder E1 As a feedback information, the value indicating the rotation speed and the rotation direction of the motor is used until the dust feed valve angle θ _a is changed from α _k (k = 2 to 5) to α _k−1 , as indicated by a broken line arrow in FIG. Reverse M1.

  Next, the CPU 100a waits until a predetermined time elapses using a timer (step S104). When the predetermined time has elapsed (step S104: YES), the CPU 100a returns the process to step S101.

If the value of Okuchiriben angle theta _a is equal to the setting angle theta ₁ (step S102: YES), CPU100a takes in the set set angle theta ₂ of the values in the processing cylinder valve angle setting switch 82 (step S105). The CPU100a is determined whether to compare the value with the set angle theta ₂ of the value of the access and processing cylinder valve angle theta _b to EEPROM100d, the value of the processing cylinder valve angle theta _b is equal to the value of the set angle theta ₂ (Step S106). When the processing cylinder valve angle theta _b is not equal to the set angle theta ₂ (step S106: NO), CPU100a outputs Modoben signal processing cylinder valve drive circuit 100h (step S107), the motor M2 by the rotary encoder E2 As a feedback information, the value indicating the rotation speed and the rotation direction of the motor is used until the processing cylinder valve angle θ _b is changed from β _k (k = 2 to 5) to β _k−1 as shown by a broken line arrow in FIG. M2 is rotated in reverse.

Next, the CPU 100a waits until a predetermined time elapses using the timer (step S108). When the predetermined time has elapsed (step S108: YES), the CPU 100a returns the process to step S105. If the value of the processing cylinder valve angle theta _b is equal to the set angle theta ₂ (step S106: YES), CPU100a ends the Modoben process.

In the combine according to the first embodiment, the grain enters the outlet 13e of the processing chamber 13 located upstream of the dust outlet 33 in the flow path of the grain from the handling chamber 10 to the dust outlet 33. An amount detection sensor 34 is provided, and based on the detection result detected by the grain amount detection sensor 34, the operations of the dust feeding valve 10 a and the processing cylinder valve 13 a are controlled, and the straw and the grain to the processing chamber 13 are controlled. The amount of grain discharged from the outlet 13e and the amount of grain discharged from the outlet 13e can be reduced to prevent the amount of grain discharged from the dust outlet 33 from exceeding the allowable loss amount.
Further, by providing the allowable value setting switch 83 for changing the threshold value P, the user can change the threshold value P to an optimum value according to the variety of cereal grains and the field condition.

In addition, when the angle of the dust feed valve 10a and the processing drum valve 13a is the upper limit value and the operation of the dust feed valve 10a and the treatment drum valve 13a is impossible, the aircraft is forcibly decelerated, It is possible to reduce the amount of grain sown and to prevent the amount of grain discharged from the dust outlet 33 from exceeding the allowable loss amount.
Further, when the grain amount detected by the grain amount detection sensor 34 is equal to or greater than the threshold value P, the automatic control lamp 84 is turned on to notify the user that the grain amount is greater than or equal to an allowable value. Can do.

In the case of release of the control of Okuchiriben 10a and processing Doben 13a, waits a predetermined time after Okuchiriben angle theta _a is rotated in the reverse direction of the motor M1 until the alpha _k-1 from alpha _k, again The motor M1 is reversely rotated, the motor M2 is reversely rotated until the processing cylinder valve angle θ _b is changed from β _k to β _k−1 , and then a predetermined time is waited. 10a and the process cylinder valve 13a are gradually returned to the set positions (refer to the return valve process), and a sudden load is prevented from acting on the dust supply valve 10a and the process cylinder valve 13a. Damage to the valve 13a can be avoided.

  In the combine according to the first embodiment, when the grain amount detected by the grain amount detection sensor 34 is equal to or greater than the threshold value P, the automatic control lamp 84 is turned on and the grain amount detection sensor 34 turns on. Although the automatic control lamp 84 is turned off when the detected grain amount is less than the threshold value Q, a display panel is provided in the cabin 8 instead of the automatic control lamp 84, and the grain amount is detected on the display panel. You may display that the grain amount detected by the sensor 34 is more than the threshold value P, or less than the threshold value Q. In addition, the angles of the dust feed valve 10a and the processing barrel valve 13a are obtained based on the detection values by the rotary encoders E1 and E2. However, instead of the rotary encoders E1 and E2, potentiometers are provided for the dust feed valve 10a and the processing barrel valve 13a. The angles of the dust feeding valve 10a and the processing cylinder valve 13a may be obtained based on the detection value of the potentiometer.

(Embodiment 2)
Hereinafter, the present invention will be described in detail with reference to the drawings showing the combine according to the second embodiment. FIG. 14 is a side view showing the operation mechanism of the chaff sheave.

  In the vicinity of the handling cylinder 11, an exhaust wall chain 50 is provided for conveying the waste threshed by the handling cylinder 11 toward a cutter (not shown). An exhaust wall guide rod 51 is provided so as to face the exhaust wall chain 50, and the waste water moves between the exhaust wall guide rod 51 and the exhaust wall chain 50 as the exhaust wall chain 50 moves.

  As shown in FIG. 14, an L-shaped rotary lever 52 is provided on the lower side of the waste wall guide rod 51, and the rotary lever 52 extends from the front and rear hooks 52a that are long in the front-rear direction and from the front end of the front and rear hooks 52a. And an upper and lower flange 52b protruding upward. A pivot 52c is provided at the corner of the upper and lower rods 52b and the front and rear rods 52a. Further, the rear end portion of the spring body 54 is fixed to the protruding end portion of the upper and lower rod 52b, and the front end portion of the spring body 54 is fixed at an appropriate position of the combine. The waste wall guide rod 51 and the rear end portion of the front and rear rod 52 a are connected via a connecting rod 53. The connecting rod 53 and the front / rear rod 52a are pivoted.

  As the waste moving between the waste wall guide rod 51 and the waste wall chain 50 increases, the waste wall guide rod 51 is pressed and moved downward, and the turning lever 52 is pivoted on the pivot 52c. It rotates backward (see solid line arrow in FIG. 14). At this time, the spring body 54 extends. On the other hand, as the evacuation decreases, the rotating lever 52 rotates forward about the pivot shaft 52c by the restoring force of the extended spring body 54, and the evacuation guide rod 51 moves upward (broken arrow in FIG. 14). reference).

Next, the configuration of the chaff sheave 18 will be described. The chaff sheave 18 has a frame (not shown) framed in a rectangular shape. A number of sheave plates 18a, 18a,..., 18a extending in the left-right direction are arranged along the front-rear direction between the two frame members arranged on the left and right extending in the front-rear direction. It is set up. Each of the upper portions of the sheave plates 18a, 18a,..., 18a is pivotally supported by a frame member via support shafts 18k, 18k,. The lower part of each sheave plate 18a, 18a, ..., 18a is connected to one connecting rod 18b extending in the front-rear direction via pivots 18l, 18l, ..., 18l. A midway portion of a rectangular rotating plate 18c is connected to the front portion of the connecting rod 18b, and one end of the rotating plate 18c is pivoted around the shaft 18i above the connecting rod 18b. It is supported. One end portion of a chaff wire 18e is connected to the other end portion of the rotating plate 18c, and the other end portion of the chaff wire 18e is connected to the upper and lower flange 52b.
The shaft body 18i is provided with a potentiometer type sheave sensor 18j for detecting the position of the rotating plate 18c around the shaft body 18i. Sheave angle based on the output of the Shibusensa 18j are the structure for detecting the theta _r (sieve plate 18a, 18a, · · ·, the angle between 18a and connecting rod 18b).

One end of an L-shaped manual plate 18h operated by a manual lever (not shown) is connected to the shaft 18i. The middle portion of the chaff wire 18e and one end portion of the manual wire 18g are connected to the other end portion of the manual plate 18h. The other end of the manual wire 18g is connected to the manual lever.
The manual plate 18h and the rotary plate 18c are connected to one end of the rotary plate 18c and the other end of the manual plate 18h via a spring body 18d. One end portion of a spring body 18f is connected to the middle portion of the manual plate 18h, and the other end portion of the spring body 18f is fixed at an appropriate position of the threshing device 2.

When the pivot lever 52 pivots backward, the chaff wire 18e is pulled, the pivot plate 18c pivots counterclockwise, the connecting rod 18b moves rearward, the sheave plate 18a, 18a, ···, 18a is standing sheave angle θ _r is increased, the sieve plate 18a, 18a, ···, interval of 18a with each other becomes wider. At this time, the spring body 18f is compressed (see the solid line arrow in FIG. 14). On the other hand, when the pivot lever 52 pivots forward, the pivot plate 18c pivots clockwise by the restoring force of the spring body 18f, the connecting rod 18b moves forward, and the sheave plate 18a. , 18a, · · ·, (see Fig. 14 the dashed arrows) narrows tilted to sheave angle theta _r is small, and the sieve plate 18a, 18a, · · ·, 18a distance between is 18a.

Discharge Waragaido rod 51 moves up and down according to increase reduction of Hai桿, the pivot lever 52 is said manual plate 18h and the rotary plate 18c is rotated by rotating sheave angle theta _r is adjusted. Further in accordance with the operation of the manual lever, the manual wire 18g is or relaxation is pulled, the manual plate 18h and pivot plate 18c is rotated, the sheave angle theta _r is adjusted. The manual lever can be fixed at an appropriate position.

  A motor M3 is disposed below the rotation lever 52, and an electromagnetic brake (not shown) that brakes the rotating shaft of the motor M3 is provided in the motor M3. The rotating shaft of the motor M3 is connected to one of the electromagnetic motor clutches 71 through a reduction gear box (not shown). The other of the motor clutch 71 is connected to the pivot 52c. The motor M3 is provided with a rotary encoder E3 that detects the rotation speed and rotation direction of the motor M3.

  The motor M3 is driven by an operation command from the control unit 100. The control unit 100 controls the drive of the motor M3 using the value indicating the rotation speed and the rotation direction of the motor M3 by the rotary encoder E3 as feedback information. The electromagnetic brake is released simultaneously with the start of rotation of the motor M3, and the electromagnetic brake is activated simultaneously with the end of rotation. The motor clutch 71 is connected or disconnected by a connection signal from the control unit 100.

  When the motor clutch 71 is engaged based on the connection signal of the control unit 100 and the motor M3 rotates forward based on the operation command of the control unit 100, the rotation lever 52 rotates backward. The waste wall guide rod 51 moves downward, and the spring body 54 extends (see the solid line arrow in FIG. 14). When the motor clutch 71 is disconnected based on the disconnection signal from the control unit 100, the rotating lever 52 is rotated by the restoring force of the spring body 54 and the pressure of the exhaust acting on the exhaust wall guide rod 51. The drain guide bar 51 is arranged at a position corresponding to the amount of waste (see the broken line arrow in FIG. 14).

With the above configuration, when the motor clutch 71 is engaged and the motor M3 is rotated forward, the rotating lever 52 is rotated backward, and the manual plate 18h and the rotating plate 18c are rotated, so that the sheave angle θ. _r is adjusted. Further, by disconnecting the motor clutch 71, the waste wall guide rod 51 is disposed at a position corresponding to the amount of waste, and the manual plate 18h and the rotary plate 18c are turned according to the increase / decrease of the waste, and the sheave angle. θ _r is adjusted.

FIG. 15 is a block diagram illustrating a configuration of the control unit 100. The EEPROM 100d of the control unit 100 stores a value of the upper limit angle θ _max that serves as a reference for determining whether or not the sheave plate 18a can be rotated.

  The control unit 100 includes a chaff sheave drive circuit 90 related to the motor M3, and the chaff sheave drive circuit 90 controlled by the CPU 100a outputs a drive command to the motor M3. Further, the control unit 100 outputs a connection signal to the motor clutch 71 via the output interface 100f. The output signals of the sheave sensor and the rotary encoder E3 are input to the control unit 100 via the input interface 100e.

  FIG. 16 is a flowchart showing a processing procedure of operation control of the dust feeding valve 10a and the processing cylinder valve 13a executed by the CPU 100a of the control unit 100.

The CPU 100a of the control unit 100 takes in the output signal of the cutting switch 80 and determines whether or not the cutting switch 80 is on (step S21). When the cutting switch 80 is off (step S21: NO), the CPU 100a returns the process to step S21. When the cutting switch 80 is on (step S21: YES), the CPU 100a takes in the output voltage V of the allowable value setting switch 83 (step S22), and refers to the function f and the function g with reference to the threshold P and A threshold value Q is set (step S23). The CPU100a takes the grain quantity sensing value _{A 5} by grain amount detection sensor 34 (step S24), and determines whether the grain quantity sensing value _{A 5} is equal to or larger than the threshold P (step S25). When grain quantity sensing value _{A 5} is less than the threshold P (step S25: NO), CPU100a returns the process to step S24.

When grain quantity sensing value _{A 5} is equal to or greater than the threshold P (step S25: YES), CPU100a outputs a lighting signal to the automatic control lamp 84 (step S26), and turns on the automatic control lamp 84.

Next, the CPU 100a executes a dust feed valve and chaff sheave operation process described later (step S27). Then, a turn-off signal is output to the automatic control lamp 84 (step S28), and the automatic control lamp 84 is turned off. And a return valve process is performed (step S29) and a process is complete | finished.
Note Modoben processing in step S29, after the value of Okuchiri valve angle theta _a step S102 in the first embodiment is determined to be equal to the value of the set angle theta _1, the next step to end the Modoben process Except for proceeding to step S104, the same processing as step S101 to step S104 is performed, and thus detailed description thereof is omitted.

  Next, the dust feeding valve and chaff sheave operation process executed when the grain amount detection sensor 34 detects a grain amount equal to or greater than the threshold value P will be described. FIG. 17 is a flowchart showing the processing procedure of the dust delivery valve operation processing.

The CPU 100a of the control unit 100 outputs a coupling signal to the motor clutch 71 (step S271) and couples the motor clutch 71. Then read the value of Okuchiri valve angle theta _a to access EEPROM100d (step S272), Okuchiriben angle theta _a determines whether the angle alpha ₅ (step S273). Okuchiriben If the angle theta _a is α _{n (n} = 1~4) (step S273: NO), CPU 100a outputs a positive rotation signal to the Okuchiriben driver circuit 100 g (step S274), the rotary a value that indicates the rotational speed and rotational direction of the motor M1 by the encoder E1 as feedback information, Okuchiriben angle theta _a is rotated forward motor M1 until the alpha _{n + 1.}

Then CPU100a takes the sheave angle theta _r from Shibusensa 18j (step S275), and compares the value of the upper limit angle theta _max which is stored in the value and EEPROM100d sheave angle theta _r, sheave angle theta _r is an upper limit It is determined whether or not the angle θ _{max is} greater than or equal to (step S276). If sheave angle theta _r is the upper limit angle theta _max or more (step S276: YES), CPU100a proceeds to the block S278 which will be described later. If sheave angle theta _r is less than the upper limit angle theta _max (Step S276: NO), and outputs a positive rotation signal to the chaff sieve drive circuit 90 (step S277), thereby the motor M3 is rotated a predetermined number. The rotation of the motor M3, the sheave angle theta _r is a predetermined angle increases.

  Then, the CPU 100a waits until a predetermined time elapses using the timer (step S278). The predetermined time corresponds to the time from when the angle of the dust feed valves 10a, 10a, 10a, and 10a is changed by the processing in step S274 to when the discharge discharged from the discharge port 13e decreases.

When the predetermined time has elapsed (step S278: YES), CPU 100a is a grain quantity sensing value _{A 6} by grain amount detecting sensor 34 uptake (step S 279), less grain quantity sensing value _{A 6} is the threshold Q It is determined whether or not (step S280). When grain quantity sensing value _{A 6} is the threshold value Q or more (step S280: NO), the process returns to step S272. When grain quantity sensing value _{A 6} is less than the threshold Q (step S280: YES), CPU 100a outputs a disconnect signal to the motor clutch 71 (step S281), thereby cutting the motor clutch 71, Okuchiriben And the chaff sheave operation process is terminated.

If Okuchiriben angle theta _a is an angle alpha ₅ (step S273: YES), CPU 100a executes the vehicle speed reduction processing (step S282), the process proceeds to step S281. The vehicle speed reduction process in step S282 is the same as the process in step S87 in the first embodiment, and a detailed description thereof is omitted.

  In the combine according to the second embodiment, a plurality of sheave plates for sorting the straw and grains that flowed down from the handling room are arranged, and the grain amount detected by the grain amount detection sensor 34 When the value is equal to or greater than the threshold value P, the plurality of sheave plates are operated together with the dust feed valves 10a, 10a, 10a, and 10a so that the amount of grain leaking from the plurality of sheave plates is reduced, and the dust outlet It is possible to prevent the amount of grain discharged from 33 from exceeding the allowable loss amount.

  In the combine according to the second embodiment, the dust feeding valves 10a, 10a, 10a, and 10a and the chaff sheave are operated together. Alternatively, the dust supply valves 10a, 10a, 10a, 10a, the processing cylinder valves 13a, 13a, 13a, 13a and the chaff sheave may be operated together.

  Among the configurations of the combine according to the second embodiment, the same reference numerals are given to the same configurations as those in the first embodiment, and detailed description thereof is omitted.

1 is an external perspective view of a combine according to Embodiment 1. FIG. It is side surface sectional drawing which shows schematically the internal structure of the combine threshing apparatus which concerns on Embodiment 1. FIG. FIG. 3 is a transmission mechanism diagram schematically showing a transmission path for driving force of the combine engine according to the first embodiment. It is a schematic front view of a switch group and a lamp group provided on a dashboard panel in the cabin of the combine according to the first embodiment. FIG. 3 is a schematic plan view showing a dust feed valve, a processing cylinder valve, and a transmission mechanism of the combine according to the first embodiment. The relationship between the angle of the combine according to Embodiment 1 with respect to the front-rear direction of the dust-feeding valve and the dust-feeding valve angle setting switch, and the relationship between the angle of the processing barrel valve with respect to the front-rear direction and the processing barrel-valve angle setting switch will be described. It is explanatory drawing. 3 is a block diagram illustrating a configuration of a combine control unit according to Embodiment 1. FIG. A function f indicating the relationship between the threshold value P stored in the EEPROM of the combine according to the first embodiment and the output voltage of the allowable value setting switch, and a function g indicating the relationship between the threshold value Q and the output voltage of the allowable value setting switch It is a graph which shows. 4 is a flowchart showing a processing procedure for operation control of a dust feeding valve and a processing cylinder valve, which is executed by the combine control unit according to the first embodiment. 5 is a flowchart showing a processing procedure of dust feed valve operation processing executed by the combine control unit according to the first embodiment. 5 is a flowchart showing a processing procedure of processing cylinder valve operation processing executed by the combine control unit according to the first embodiment. 6 is a flowchart showing a processing procedure of a vehicle speed reduction process executed by the combine control unit according to the first embodiment. 4 is a flowchart showing a processing procedure of return valve processing executed by the combine control unit according to the first embodiment. FIG. 10 is a side view showing an operation mechanism of a combine chaff sheave according to a second embodiment. 6 is a block diagram illustrating a configuration of a combine control unit according to Embodiment 2. FIG. It is a flowchart which shows the process sequence of the operation control of the dust feeding valve and process cylinder valve which the control part of the combine which concerns on Embodiment 2 performs. 6 is a flowchart illustrating a processing procedure of a dust feeding valve operation process executed by a combine control unit according to a second embodiment.

Explanation of symbols

1 Traveling crawler (traveling part)
DESCRIPTION OF SYMBOLS 3 Cutting part 10 Handling chamber 10a Dust feeding valve 13 Processing chamber 13a Processing drum valve 13b Processing drum 13e Discharge port 18a Sheave plate 18b Connection rod 18k Spindle 18l Pivot 65 Dust feeding valve shaft 65 'Processing drum valve shaft M1 motor (first motor Drive source)
M2 motor (second drive source)
M3 motor (third drive source)
E1 Rotary encoder E2 Rotary encoder E3 Rotary encoder

Claims (8)

In a threshing machine comprising a handling room for threshing the harvested cereal and a processing room connected to the handling room and having a discharge port for discharging the cocoon and the grain and separating the grain from the cocoon and the grain,
Detecting means for detecting the amount of grain discharged from the outlet;
A discharge amount adjusting means for adjusting the amount of grain discharged from the discharge port;
Determination means for determining whether or not the amount of grain detected by the detection means is within a predetermined range;
A threshing machine comprising: a control unit that controls an operation of the discharge amount adjusting unit based on a determination result of the determination unit. The handling chamber contains a cylindrical handling cylinder,
The discharge amount adjusting means is disposed around the handling cylinder in the handling chamber, and includes a dust feeding valve that adjusts the sending amount of straw and grains,
The dust delivery valve is pivotally supported by a dust delivery valve shaft whose axial direction is the radial direction of the cylinder.
A first drive source for supplying power to the dust delivery valve;
When the determination means determines that the grain amount detected by the detection means is outside a predetermined range, the control means sets the dust supply valve around the dust supply valve shaft. The threshing machine according to claim 1, further comprising means for driving the first drive source so as to rotate in a direction. The processing chamber contains a cylindrical processing cylinder,
The discharge amount adjusting means is disposed around the processing cylinder in the processing chamber, and includes a processing cylinder valve that adjusts the amount of straw and grain delivered,
The processing cylinder valve is pivotally supported by a processing cylinder valve shaft whose axial direction is the radial direction of the processing cylinder,
A second drive source for supplying power to the processing cylinder valve;
When the determination means determines that the grain amount detected by the detection means is outside a predetermined range, the control means determines that the processing cylinder valve is centered on the processing cylinder valve axis. The threshing machine according to claim 1, further comprising means for driving the second drive source so as to rotate in a direction. A plurality of sheave plates that are arranged side by side below the handling chamber and face each other;
A direction substantially perpendicular to the vertical direction and the direction in which the plurality of sheave plates are arranged is an axial length direction, and a plurality of support shafts pivotally attached to the plurality of sheave plates,
A connecting rod that is arranged along the alignment direction and connects the plurality of sheave plates via a pivot;
A third drive source for supplying power to the connecting rod,
The connecting rods are moved in the alignment direction by driving the third drive source, and the plurality of sheave plates are rotated in the same direction around each support shaft,
When the determination means determines that the amount of grain detected by the detection means is outside a predetermined range, the plurality of sheave plates rotate in one direction around the respective support shafts. The threshing machine according to any one of claims 1 to 3, further comprising means for driving the third drive source.   The threshing machine according to any one of claims 1 to 4, further comprising means for changing the predetermined range. A traveling unit that travels in the field;
Means for determining whether or not the discharge amount adjusting means is operable;
A means for forcibly decelerating the traveling unit when the means determines that the operation of the discharge amount adjusting means is impossible. Thresher described in one.   When the determination means determines that the grain amount detected by the detection means is outside the predetermined range, the display means that the grain amount detected by the detection means is outside the predetermined range. The threshing machine according to claim 1, further comprising: Position detecting means for detecting the position of the discharge amount adjusting means;
Position setting means for setting the position of the discharge amount adjusting means;
A bias determining means for determining whether or not the position of the discharge amount adjusting means detected by the position detecting means is deviated from the position set by the position setting means;
The deviation determining means determines that the position of the discharge amount adjusting means is deviated from the position set by the position setting means, and the detecting means determines the grain amount within a predetermined range. 8. The apparatus according to claim 1, further comprising: a unit that moves the discharge amount adjusting unit in a stepwise manner to a position set by the position setting unit. Threshing machine.

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