JPH04210516A - Sorting controller of thresher - Google Patents

Abstract

PURPOSE:To suppress hunting, etc., and carry out good sorting by automatically controlling treating ability of a sorting device based on detection data of amount of grain culms fed to a threshing chamber and detection data of thickness of treated material on an oscillating and sorting plate provided on the sorting device. CONSTITUTION:A feed amount detecting means S1 for detecting an amount of grain culms fed to a threshing chamber A and thickness detecting means S2 for detecting thickness of treated material on an oscillating and sorting plate 15 are provided. Then a control means 100 controls treating ability of sorting device B based on detection data of feed amount detecting means S1 and thickness detecting means S2 automatically. As a result, it is suppressed to deviate relationship between thickness of treated material on an oscillating and sorting plate 15 and treating ability of sorting device B from reasonable relationship and simultaneously hunting, etc., is suppressed and good sorting can be carried out.

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sorting control device for a threshing machine, which is provided with control means for automatically adjusting the throughput of the sorting device. [0002]

2. Description of the Related Art Optimal sorting can be carried out when the thickness of the material to be processed on a swinging sorting plate provided in a sorting device and the processing capacity of the sorting device are in an appropriate relationship. Therefore, it is common to adjust the processing capacity of the sorting device so that the appropriate relationship is achieved depending on the thickness of the object to be processed. by the way,
A sensor that directly detects the thickness of the material to be processed may be provided, but a sensor that detects the amount of grain culm supplied to the handling chamber may be provided in place of the sensor. Conventionally, only one of the two sensors was provided, and based on the detection information of that sensor,
The processing capacity of the sorting equipment was automatically adjusted. [0003]

Problems to be Solved by the Invention In the control of the sorting device, it is thought that the dead time element is relatively large. Therefore, if the processing capacity of the sorting device is automatically adjusted by providing only a sensor that directly detects the thickness of the material to be processed, hunting may occur when the amount of grain culm supplied to the handling room fluctuates.
This results in instability of the transient response. On the other hand, if the processing capacity of the sorting device is automatically adjusted by providing only a sensor that detects the amount of grain culm supplied to the handling room, the transient characteristics can be improved, but since the thickness of the material to be processed is not detected, the There is a possibility that the relationship between the thickness of the processed material and the processing capacity of the sorting device deviates from the above-mentioned appropriate relationship. SUMMARY OF THE INVENTION An object of the present invention is to provide a sorting control device for a thresher that can eliminate the above-mentioned conventional drawbacks and perform good sorting. [0004]

[Means for Solving the Problems] In order to achieve this object, the characteristic structure of the sorting control device for a threshing device according to the present invention is as follows:
A supply amount detection means for detecting the amount of grain culm supplied to the handling chamber, and a thickness detection means for detecting the thickness of the processed material on a swinging sorting plate provided in the sorting device, and the control means The present invention is configured to automatically adjust the throughput of the sorting device based on information detected by the supply amount detection means and the thickness detection means. [0005]

[Operation] By feeding back the detection information of the thickness detecting means, it is possible to prevent the relationship between the thickness of the object to be processed and the throughput of the sorting device from deviating greatly from the appropriate relationship. In other words, steady-state characteristics can be improved. Further, by feeding forward the detection information of the supply amount detection means, it is possible to reduce the possibility of hunting occurring even when the amount of grain culm supplied to the handling room fluctuates. In other words, transient characteristics can be improved. [0006]

Effects of the Invention Since the steady-state characteristics and transient characteristics can be made excellent, the relationship between the thickness of the processed material and the processing capacity of the sorting device can be maintained as appropriate as possible. Therefore, it is possible to obtain a sorting control device for a thresher that can perform good sorting. [0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which the present invention is applied to a sorting control device for a thresher mounted on a combine harvester will be described below with reference to the drawings. As shown in FIG. 9, the combine is equipped with a reaping section 4 at the front of the machine, which includes a pair of left and right crawler running devices 1, a threshing device 2, and a driver's seat 3. [0008] The reaping unit 4 includes a triggering device 5 that raises grain culms in the field, a cutting blade 6 that cuts the base of the raised grain culms, and a vertical conveyance device 8 that receives and passes the harvested grain culms to the feed chain 7 of the threshing device 2. , and a vertical conveyance device 8 for the harvested grain culm.
auxiliary conveying devices 9 are provided for conveying the materials to each other. still,
In the figure, SO is a stock sensor that comes into contact with the stock base of the harvested grain culm at the transport start end of the vertical transport device 8 and detects the presence or absence of the grain culm to be transported to the threshing device 2. [00091 As shown in FIG. 10, the engine E and the drive case IOA of the crawler traveling device 1 are interlocked and connected via a traveling transmission 10 including a belt tension type main clutch, OB, and forward/reverse switching. At the same time, the engine E and the threshing device 2 are interlocked and connected via a belt tension type threshing clutch 11. Further, a part of the output transmitted to the drive case 10A is transmitted to the reaping section 4 via a belt tension type reaping latch 12. A vehicle speed sensor S1 is provided that detects vehicle speed based on the output rotation speed of the drive case IOA. [00101 As shown in FIG. 11, the threshing device 2 includes a handling chamber A that houses a handling barrel 13 that handles and processes the harvested grain culm that is pinched and conveyed from the front side of the machine body toward the rear side of the machine body by the feed chain 7. , an oscillating sorting plate 15 that acts to sort the material to be processed supplied from the handling chamber A, and 1 to 1 that blows sorting air.
and a sorting device B equipped with a sea urinary 16. In this embodiment, the second item is returned to the swinging sorting plate 15 and sorted. In the lower part of the handling room A, there is a receiving net from which the threshed material leaks along the lower outer periphery of the handling barrel 13]
7 is provided. The swinging sorting plate 15 includes grain pans 1 arranged sequentially from the front to the rear of the aircraft.
8, a chaff sheave 19, and a scroll wheel 20. Below the chaff sheave 19, an auxiliary grain pan 21 and a grain sheave 22 are sequentially arranged in the front-rear direction. Each part of the grain pan 18 to grain sheave 22 is fixed between a pair of left and right side plates 23. [0011] As shown in FIG. 12, the chaff sieve 19 includes a plurality of band plate-like members 25 arranged in parallel in the processing material transfer direction.
It is formed in These band plate-like members 25 are rotatably attached to the side plate 23 with the upper end portion as a fulcrum. That is, by rotating the strip member 25 and adjusting the interval t to be large or small, the amount of material to be processed per unit time passing through the interval t can be adjusted. A motor M1 is provided on the fixed frame side of the threshing device 2 to adjust the distance t to a larger or smaller size. Operating rod 2 connected to the lower end of member 25
8 and are interlocked and connected via a release wire 29. Also provided are a spring 30 that urges the gap t toward the closing side where it becomes smaller, and a chaff opening detection potentiometer P1 that detects the adjusted state of the gap t as a change in the position of the block member 27. [0012] Further, a thickness sensor S2 serving as a thickness detection means for detecting the thickness of the material to be processed on the chaff sieve 19 is attached to the holding member 17A of the receiving net 17. The thickness sensor S2 includes a sensor bar 31 that is swingably suspended around a horizontal axis, and a detection section 32 that detects the swing angle of the sensor bar 31. The sensor bar 31 is connected to the downstream section 3
1A is formed into a bifurcated shape that is longer than the upstream portion 31B. In other words, the thickness of the workpiece is detected based on the angle at which the sensor bar 31 contacts and swings the workpiece on the chaff sieve 19. When the thickness of the workpiece is relatively small, the downstream section 31A When the thickness of the workpiece is relatively large, the upstream portion 31B comes into contact with the workpiece. [0013] 1-The lamination 16 is adapted to change and adjust the amount of air blown by changing its rotational speed. To explain further, as shown in FIGS. 13 and 14, the input pulley 34 attached to the rotating shaft 33 of the handle 16 is divided into a fixed side 34A and a sliding side 34B, and is a so-called split pulley type speed change. A device 35 is configured. Then, a motor M2 for adjusting the air blowing amount is attached to the fixed frame side of the threshing device 2,
An operating arm 36 for speed change operation is attached to the speed change device 35. The operating arm 36 and a piece member 38 that engages with a screw shaft 37 that is driven forward and backward by the motor M2,
They are interlocked and connected by a J's wire 39. With that,
It is configured such that the output of the engine E, which is transmitted to the input pulley 34 via the transmission belt 40, can be transmitted to the rotating shaft 33 by changing the speed. Further, a rotation speed sensor S3 for detecting the rotation speed of the handle 16 is provided. [0014] Next, a control configuration for automatically adjusting the throughput of the sorting device 2 by operating the motor M1 for adjusting the interval of the chaff sieve 19 and the motor M2 for adjusting the air blowing amount will be described. As shown in FIG. 1, a control device H using a microcomputer is provided, and the control device H includes stock sensor SO1 vehicle speed sensor 31. Thickness sensor S2, rotation speed sensor S3 of the threshing 16, threshing switch S4 for detecting on/off of the threshing clutch 11. A back switch S5 that detects that the transmission 10 is operated in the reverse direction, a selection switch S6 that selects whether the processed material is rice or wheat, a rotation speed sensor S7 of the engine E, and a potentiometer P1 for detecting the chaff opening. , a chaff opening setting potentiometer P2 that sets the maximum chaff opening CHO, and a tow rotation speed setting potentiometer P3 that sets the maximum tow rotation speed TOO. Then, the control device H controls the motor M1 for adjusting the interval and the motor M for adjusting the air blowing amount based on information set and stored in advance and various input information.
It is configured to control the operation of 2. That is, the control means 100 is configured using the control device H. [0015] First, handling of input information will be explained. In Fig. 15, a chaff opening setting potentiometer P2 is shown.
The maximum chaff opening degree CHO with respect to the set voltage is shown in FIG. 16, and the maximum chaff rotation speed TOO with respect to the set voltage of the rotor rotation speed setting potentiometer P3 is shown in FIG. The vertical axis in FIG. 15 corresponds to the output voltage of the chaff opening detection potentiometer P1, which is 0. 5 (V) is fully closed (
CHMIN), 3. 5 (V) is fully open (CHMAX
). Incidentally, since the amount of grain culm supplied to the handling room A increases as the reaping speed increases, it may be assumed that the amount is proportional to the vehicle speed. In this embodiment, the vehicle speed sensor S1 corresponds to the supply amount detection means. Here, as shown in FIG. 17, the vehicle speed SP is divided into five levels SPL. Furthermore, the detection voltage SV of the thickness sensor S2 is also divided into eight levels SVL, as shown in FIG. level l
Level 7 corresponds to a state in which the longitudinal direction of the downstream portion 31A is substantially vertical, and level 7 corresponds to a state in which the longitudinal direction is substantially horizontal. [0016] The operation of the control device H will be described below. During the reaping operation (second mode described later), the reference chaff opening CHVR is basically set at a maximum of 1 from the maximum chaff opening CHO and the vehicle speed level SPL. The standard chaff rotation speed TOVR is calculated from the hemi rotation speed TOO and the vehicle speed level SPL, and the standard chaff opening CHVR and the standard chaff rotation speed TOVR are corrected based on the thickness level SVL, and the target value CH of the chaff opening and chaff rotation are calculated. The target value To of the number is determined. Then, both the chaff opening degree and the rotation speed are set to the target value CH1.
The motor M1 for adjusting the interval and the motor M2 for adjusting the air blowing amount are operated so that the distance To is reached. In addition, the setting voltage of potentiometer P2 for chaff opening setting is 4.2 (V
), the threshing rotation speed is 500 (rpm) or more, and the threshing switch S4 is ON, the following control is activated. Also, a case will be mainly described in which the selection switch S6 selects rice. There are the following three control modes after the starting conditions are established. The first mode is when the stock sensor SO is first turned on after the startup condition is established and until a predetermined time has elapsed, and the second mode is when the stock sensor SO is ON and then the predetermined time has elapsed until the stock sensor SO is turned off. , stock sensor SO turns OFF and then stock sensor SO turns OFF.
This is the third mode until a predetermined period of time has elapsed. [0017] FIG. 19 shows the relationship between the thickness level SVL and the target value CH of the chaff opening in the first mode, and FIG. 20 shows the relationship between the thickness level SVL and the target value To of the turning speed. Here, control is executed regardless of vehicle speed. Note that the numbers in parentheses indicate the case of wheat (the same applies hereinafter). Further, when the state where the thickness level SVL is 1 continues for a predetermined time or more, it is determined that there is no processing material in the threshing device 2, and the target value CH of the chaff opening degree is set to 0. 5. Set the target value To of the rotational speed to 850 (1000). Further, the same relationship as described above in the second mode is shown in FIGS. 21 and 22. Here, when the thickness level SVL is 4 or more,
Both target values CH and To are not changed to the smaller side. Further, when the thickness level SVL is O, it is determined that the thickness sensor S2 is abnormal and the information from the thickness sensor S2 is ignored. In other words, in addition to the information on the reference chaff opening CHVR and the reference gear rotation speed TOVR, the conventional control is performed to correct both target values CH and To based on the engine speed, etc. (For example, when the vehicle speed suddenly decelerates, Both target values CH and To are not corrected until the time elapses.When the engine speed decreases by more than the predetermined speed, the vehicle speed level SPL is set to 0.
etc.). Incidentally, when the back switch S5 is turned on, the mode shifts to the third mode. Further, the same relationship as described above in the third mode is shown in FIGS. 23 and 24. CH here
E and TOE are both target values CH and To when the stock sensor SO changes from ON to OFF. Here, when the state where the thickness level SVL is 1 continues for a predetermined time or more, the same process as in the first mode is performed. Also, thickness level SV
When L is 0, the output is stopped for a predetermined period of time, and then the target value CH of the chaff opening is set to 1. 5 (0,5), set the target value To of the Toumi rotation speed to 850 (TOE). Further, the output is stopped until a predetermined period of time elapses after the stock price sensor SO changes from OFF to ON. [00181 Next, the procedure for determining both target values CH and To will be explained based on the flowcharts shown in FIGS. 2 to 8. First, according to the procedure shown in FIG. 3, the detection voltage SV of the thickness sensor S2 is determined at which thickness level S in FIG.
Determine whether it is compatible with VL. In the figure, CNTl is a counter for time measurement, and T is a set time (here, 2 seconds).
) are shown respectively. That is, when the detection voltage SV exceeds the threshold value for 1 (sec) or more, a flag for the corresponding thickness level SVL is set. Note that although the figure typically shows the case where the thickness level SVL is 1, the same process is performed when the thickness levels SVL are 2 to 7. [0019] Next, it is determined whether the activation condition is satisfied. If the startup conditions are met, the stock sensor S
The mode is determined based on the information of O. Note that when the thickness level SVL is 0, the target values CH and TO are determined, including the conventional control described above, but a detailed flow will be omitted. [00201 The flow for determining the target values CH and To in the second mode is shown in FIGS. 4 to 7. First, the reference chaff opening CHVR is determined from the values of CHO-0.4XSPL, and the reference torque rotation speed TOVR is determined from the values of TOO-100XSPL. Then, the target values CH and To are determined by correcting them using the thickness level SVL. By the way, when the chaff opening reaches the upper limit CHMAX, the vehicle speed level SP
Even if L or the thickness level SVL becomes large, the target value TO of the number of rotations of the tow wheel is not increased. In addition, in the figure,
CN1 is the previous target value of the chaff opening, TM is the previous target value of the rotation speed, CHMIN is the lower limit of the chaff opening, T
OMAX indicates the upper limit of the number of rotations of the handwheel, and TOMIN indicates the lower limit of the number of rotations of the handwheel. [0021] FIG. 8 shows a flow for determining the target values CH and TO in the first mode and the third mode. First, the first mode flag is checked to determine whether the mode is the first mode or the third mode. In the first mode, the maximum chaff opening C)(
0 and the maximum rotation speed TOO, respectively, when the stock sensor SO is 0.
Both target values CHE and TOE when changing from N to OFF
shall be. Then, both target values CHE and TOE are corrected by the thickness level SVL to determine target values CH and To. [0022] After determining both the target values CH and TO, the motor M1 for adjusting the interval and the motor N for adjusting the air blowing amount are operated so that the chaff opening degree and the number of revolutions of the trumpet become the target values CH, TO.
12 is activated. If the activation conditions are not met, a first mode flag is set and it is determined whether the mode is wet mode. A description of target value determination based on the wetness mode will be omitted here. In addition, potentiometer P2 for chaff opening setting
The wet mode is determined when the set voltage is 4.2 or higher. [0023] (Another Embodiment) In the above embodiment, the present invention was applied to a combine harvester, but it can also be applied to a harvester, etc. In the above embodiment, the amount of processed material supplied is detected based on the vehicle speed. However, it may also be detected based on the thickness of the grain culms transported to the handling room A, and the specific configuration of the supply amount detection means S1 can be changed in various ways.In addition, in the above embodiment, the information of the supply amount detection means S1 can be used to detect Although the case where the obtained target value is corrected with the information of the thickness detection means S2 has been shown, the target value obtained by the thickness detection means S2 may be corrected with the information of the supply amount detection means S1, or both detection means S1 ,
Various changes can be made to the control form using the information from both the detection means SL and S2, such as determining the target value using fuzzy rules from the information from S2. Incidentally, although reference numerals are written in the claims section for convenient comparison with the drawings, the present invention is not limited to the structure shown in the accompanying drawings.

[Brief explanation of the drawing]

[Figure 1] Block diagram of control configuration

[Figure 2] Flowchart of control operation

[Figure 3] Flowchart of control operation

[Figure 4] Flowchart of control operation

[Figure 5] Flowchart of control operation

[Figure 6] Flowchart of control operation

[Figure 7] Flowchart of control operation

[Figure 8] Flowchart of control operation

[Figure 9] Schematic side view of combine harvester

[Figure 10] Transmission system diagram

[Fig. 11] Cutaway side view of threshing device

[Figure 12] A cutaway side view showing the configuration of the chaff sieve

[
Figure 13: Side view of main parts showing Toumi's transmission structure

[Figure 14]
Cutaway side view of Toumi's input pulley part

[Fig. 15] Explanatory diagram showing the maximum chaff opening degree with respect to the setting voltage of the potentiometer for setting the chaff opening degree

[Fig. 16] Explanatory diagram showing the maximum rotation speed relative to the setting voltage of the rotation speed setting potentiometer

[Fig. 17] Explanatory diagram showing the correspondence between vehicle speed and vehicle speed level

[Fig. 18] Explanatory diagram showing the correspondence between the detection voltage of the thickness sensor and the thickness level

[Fig. 19] Explanatory diagram showing the relationship between the thickness level and the target value of chaff opening in the first mode

FIG. 20 is an explanatory diagram showing the relationship between the thickness level and the target value of 1-Rami rotation speed in the first mode.

[Fig. 21] Explanatory diagram showing the relationship between the thickness level and the target value of chaff opening in the second mode

[Fig. 22] Explanatory diagram showing the relationship between the thickness level and the target value of Tumi rotation speed in the second mode

[Fig. 23] Explanatory diagram showing the relationship between the thickness level and the target value of chaff opening in the third mode

[Fig. 24] Explanatory diagram showing the relationship between the thickness level and the target value of Tumi rotation speed in the third mode

[Explanation of symbols]

15. Oscillating sorting plate A. Handling room B Sorting device Sl Supply amount detection means S2 Thickness detection means 100 Control means

[Figure 2]

[Figure 5]

[Figure 8] [Figure 131

Claims (1)

[Claims] 1. A sorting control device for a threshing device, which is provided with a control means (100) for automatically adjusting the processing capacity of a sorting device (B), which detects the amount of grain culm supplied to a handling room (A). and a thickness detection means (S1) for detecting the thickness of the processed material on the swinging sorting plate (15) provided in the sorting device (B). Control means (1
00) is based on the detection information of the supply amount detection means (S1) and the thickness detection means (S2).
B) A sorting control device for a threshing device configured to automatically adjust the throughput of the threshing device.