JPH0516A - Controller for threshing of combine - Google Patents

Abstract

PURPOSE:To eliminate defective threshing by providing a controlling means for increasing the conveying speed and opening degree of 2 dust feeding valve with increasing feed rate of grain culms. CONSTITUTION:A speed changing means (F) for changing the conveying speed of a feed chain 1 for feeding grain culms to a threshing chamber (A) is provided and an opening degree changing means (G) for changing the opening degree of a dust feeding valve additionally attached to the threshing chamber is installed. Furthermore, a controlling means for controlling the operations of the speed changing means (F) and the changing means (G) and increasing the conveying speed of the feed chain and the opening degree of the operation of the speed changing means (F) and the changing means (G) with increasing feed rate of the grain culms is provided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a threshing control device for combine harvesters, and more specifically to a grain culm supplied into a handling chamber by a feed chain for threshing by rotating a handling cylinder provided in the handling chamber. The present invention relates to a combine threshing control device for threshing.

[0002]

2. Description of the Related Art In a conventional combine threshing control device, the conveying speed of the feed chain and the opening of the dust sending valve are set to be constant regardless of the amount of grain culm supplied. Further, the number of rotations of the handling cylinder is set to be constant regardless of the amount of grain culm supplied.

[0003]

When the feed speed of the feed chain and the opening degree of the dust feed valve are set to be constant as described above, if the grain culm supply amount increases,
Both the feed speed of the feed chain and the opening degree of the dust feed valve are in a state of being less than the conditions commensurate with the supply amount of the grain culms, and the rubbing action in the handling chamber becomes excessive, resulting in stripping. , It has been found that clam grains (entering the stem part of the grain culvert conveyed by the feed chain) occur and defective threshing occurs. On the other hand, when the grain culm supply amount decreases, both the feed speed of the feed chain and the opening degree of the dust feed valve become larger than the condition commensurate with the grain culm supply amount, and the kneading action is in a state of being too small. As a result, the present inventors have found that the singularization of the branch shoot grains (removal of the branch shoots from the branch shoot grains) becomes insufficient, resulting in defective threshing. Further, in the case where the number of rotations of the handling cylinder is set to be constant as described above, when the grain culm supply amount increases, the number of rotations of the handling barrel becomes less than the condition corresponding to the grain culm supply amount. , It was found that the action of removing the branch shoot particles from the grain culm due to the rotation of the handling barrel is reduced and the unhandled leaves (the branch stem grains are not completely separated from the grain culm), resulting in defective threshing. . On the other hand, when the grain culm supply amount decreases, the number of rotations of the handling cylinder becomes excessively higher than the condition commensurate with the grain culm supply amount, and the threshing condition becomes excessive to cause spud and defective threshing. I found out. The present invention has been made on the basis of such knowledge, and an object thereof is to eliminate threshing defects conventionally occurring in various cases as described above and to improve the processing capacity of the threshing device.

[0004]

A threshing control device for a combine according to the present invention comprises a speed changing means for changing a conveying speed of the feed chain and an opening means for changing an opening degree of a dust sending valve attached to the handling chamber. And a dust changing valve for controlling the operation of the speed change means so that the feed speed of the feed chain increases as the supply amount of grain culms increases, and the dust supply valve increases as the supply amount of grain culms increases. The first characteristic configuration is that the control means for controlling the operation of the opening degree changing means is provided so that the opening degree becomes large.

Further, a rotation speed changing means for changing the rotation speed of the handling cylinder is provided, and the operation of the rotation speed changing means is performed so that the rotation speed of the handling cylinder increases as the amount of grain culm supplied increases. The second characteristic configuration is to control by the control means.

[0006]

According to the device of the present invention having the first characteristic configuration,
When the grain culm supply amount increases, the shift means and the opening degree changing means are actuated by the control means in accordance with the increase, and the feed chain adjusts to the supply of a large amount of grain stalks by these operations. Both the conveying speed of the and the opening of the dust delivery valve are increased, and based on those increases,
The rubbing action in the handling chamber is maintained under an appropriate condition that is not excessive, and the generation of the clam grains is avoided. On the other hand, when the grain culm supply amount decreases, the control means actuates the speed change means and the opening degree changing means according to the decrease, and by the operation thereof, the amount of grain culm supplied in a small amount is commensurate with the above. Both the conveying speed of the feed chain and the opening degree of the dust sending valve are reduced, and based on these reductions, it is avoided that the kneading action is insufficient for performing the single grain formation, and the single grain formation is avoided. Will be promoted.

According to the device of the present invention having the second characteristic configuration, the following action occurs in addition to the above-mentioned action. That is, when the grain culm supply amount increases, the rotation speed changing means is operated in accordance with the increase, and by the operation, the rotation speed of the handling cylinder is increased to meet a large amount of grain stalk supply, Based on the increase, the branch stem grain detaching action from the grain culm based on the rotation of the handling cylinder is improved so as to correspond to the supply of a large amount of grain culm, and the occurrence of the untreated residue is avoided.
Moreover, when the grain culm supply amount decreases, the operation of the rotation speed changing means is performed according to the decrease, and by the operation, the rotation speed of the handling cylinder is reduced so as to correspond to the supply of a small amount of grain culm, Based on the decrease, the threshing condition is avoided from being overloaded, and the occurrence of threshing is avoided.

[0008]

According to the apparatus of the present invention having the first characteristic configuration, it is possible to avoid the generation of the clam grains which have been conventionally generated, and to promote the formation of single grains. It is possible to improve the processing capability of the threshing device by eliminating the conventional threshing defect.

According to the device of the present invention having the second characteristic configuration, in addition to the above-mentioned effects, it is possible to avoid the occurrence of unhandled parts and the occurrence of removal of the puddle. It is possible to more surely eliminate the threshing defect and to further improve the processing capacity of the threshing device.

[0010]

Embodiments of the present invention will be described below with reference to the drawings.

1 to 7 show an embodiment of a combine threshing control device according to the present invention. As shown in FIG. 5, the combine threshing device uses a feed chain 1 from the front of the machine body. A handling room A in which a handling barrel 2 for handling a cut culm that is sandwiched and conveyed rearward is disposed, and a receiving net 3 disposed below the handling room A.
The swinging sorting plate 4 that swings and sorts the leaked material from the receiving net 3, the Karako 5 that sends the sorting wind to the swinging sorting plate 4, and the swing chamber A are sent from the handling chamber A. A rotary diffusion drum 6 that acts on straw, a dust-exhausting fan 7 that sucks and discharges dust generated inside the threshing device to the outside of the threshing device, and the grain as the first product from the rocking sorting plate 4 First screw 8 to do
And a second screw 9 for collecting grains mixed with straw as a second product, and a thrower 10 for returning the second product collected by the second screw 9 onto the swing selection plate 4. . In the figure, reference numeral 11 denotes the Glensieeve arranged above the first screw 8 and 12 denotes the Glensieeve 11
It is a chaff sheave located above.

As shown in FIG. 6, the upper part of the handling cylinder 2 is
A dust delivery valve 24 is provided for discharging the straw dust and the like generated in the handling room A to the outside of the handling room. In the figure, M ₂ is an opening adjustment electric motor as an actuator for adjusting the opening of the dust delivery valve 24, and S ₇ is a potentiometer type sensor (provided for detecting the opening of the dust delivery valve 24 ( Hereinafter, it is referred to as an opening degree detection sensor). Then, the opening detection sensor S
_The detection information by ₇ is input to the control device 30 (see FIG. 1) using a microcomputer.
The control device 30 automatically adjusts the opening of the dust delivery valve 24 so that the opening becomes larger as the amount of grain culm supplied increases.

Diagram of the power transmission system of the combine
This will be described using 7. The driving force of the engine E is
When it is transmitted to the transmission 13 via a belt transmission,
In addition, the rotary shaft 2a of the handling barrel 2, the rotary shaft 5a of the Kara5,
Belt transmission device and gear transmission for each of the # 8 screws
It is transmitted through the device. The driving force of the engine E
Of the engine E in order to transmit the torque to the rotating shafts 2a, 5a, etc.
From the engine E to the belt transmission installed in the force section
Threshing clutch that turns on and off the power transmission to the threshing device
14 is provided in the threshing clutch 14.
Threshing to detect whether it is in the cutting state or the cutting state
Switch S₃Is attached. Also, the engine E
Engine rotation speed detection to detect the rotation speed on the output shaft of
Sensor S _FourIs attached. And the threshing switch
Chi S₃Detection information and the engine speed detection sensor
S_FourThe detection information obtained by is input to the control device 30.
It has become so.

The driving force of the engine E transmitted to the first screw 8 is applied to the rotary shaft 6a of the diffusion cylinder 6, the second screw 9, and the swing shaft 4a of the swing selection plate 4 in that order. Being transmitted. In the figure, 15 is the swing shaft 4a.
Reference numeral 16 denotes an exhaust cutter which is driven by a belt and then rotationally driven by a driving force which is further transmitted by a belt, and 16 is an exhaust chain which is driven by a driving force which is belt-transmitted from the rotary shaft 2a of the handling cylinder 2. is there. Further, reference numeral 18 denotes a traveling mission portion in which the output of the traveling transmission device 13 is transmitted, and S ₁ is a vehicle speed sensor for detecting the vehicle speed based on the input rotation speed to the mission portion 18. Information detected by the vehicle speed sensor S _{1 is} also input to the control device 30. Further, S ₅ is a screw rotation speed sensor that detects the rotation speed of the second screw 9, and the detection information from the screw rotation speed sensor S ₅ is also input to the control device 30. As the screw rotation speed sensor S ₅ , a sensor originally provided for detecting clogging in the second screw 9 may be used.

The rotating shaft 2a of the handle cylinder 2 is belt-transmitted by a split pulley type transmission 20 (belt continuously variable transmission) in which the driving force of the engine E is arranged in the middle of the transmission path. It is rotationally driven by the driving force. The transmission 20 includes an input pulley 20b attached to an input shaft 20a to which the driving force of the engine E is transmitted, and an output pulley 20c that is belt-transmitted to the input pulley 20b. Rotating shaft 2a of the body 2
Is attached to. The input pulley 20b is configured as a split pulley type, and the pulley diameter is changed based on the movement of the pulley in the thickness direction.
Based on the change in the pulley diameter, the gear shift operation of the transmission 20 is performed to change the rotation speed of the handling cylinder 2. That is, the split pulley type transmission 20
Functions as a rotation speed changing unit B that changes the rotation speed of the handling cylinder 2. A handle cylinder rotation speed sensor S ₂ for detecting the rotation speed is attached to the rotary shaft 2a of the handle cylinder 2 whose rotation speed is changed based on the shift operation of the transmission 20. Information detected by the handling cylinder rotation speed sensor S _{2 is} also input to the control device 30.

The dust removal fan 7 is rotationally driven by a driving force transmitted from the rotary shaft 6a of the diffusion cylinder 6 via a split pulley type transmission 21 (belt continuously variable transmission). Has become. The transmission 21 includes an input pulley 21b attached to an input shaft 21a that is gear-transmitted from the rotary shaft 6a of the diffusion cylinder 6 and the input pulley 21 thereof.
An output pulley 21c that is transmitted by a belt is provided at b, and the output pulley 21c is attached to the rotating shaft 7a of the dust removal fan 7. Both the input pulley 21b and the output pulley 21c are configured as a split pulley type, and when one diameter is changed from small to large, the other diameter is linked and changed from large to small. The driving force transmitted to the dust removal fan 7 via the transmission 21 is transmitted to the drive sprocket 1a of the feed chain 1 via the gear type speed reduction mechanism 22 and the clutch 23. When the transmission device 21 is operated, the dust-exhaust fan 7 and the feed chain 1 are interlocked to change gears. That is, the split pulley type transmission 21 is
It also functions as a speed changing unit F that changes the conveying speed of the feed chain 1. The feed chain 1 whose transport speed is changed based on the shift operation of the transmission 21
The driving sprocket 1a, the feed chains sensor S ₆ for detecting the rotational speed in order to determine the conveying speed of the feed chain 1 is attached. Information detected by the feed chain sensor S _{6 is} also input to the control device 30.

As shown in FIG. 1, the control device 30 controls the information of the vehicle speed sensor S ₁ , the information of the handling cylinder rotation speed sensor S ₂ , the information of the feed chain sensor S ₆ , and the dust sending valve opening sensor S. _{Received 7} information, based on that information,
A split pulley type speed change device 21 as a speed change means F for changing the conveying speed of the feed chain 1, and the dust transfer valve 2
The opening degree changing electric motor M ₂ as the opening degree changing means G for adjusting the opening degree of No. 4 and the operation of the split pulley type transmission 20 as the rotation speed changing means B are controlled, and their control means C is used. Function as. Specifically, the control device 3
0 indicates the grain culm supply amount on the basis of the information of the vehicle speed sensor S ₁ , and the condition is such that the feed rate of the feed chain 1 is proportionally increased or decreased to the grain culm supply amount (see FIG. 2). The opening degree is controlled under the condition (see FIG. 3) that controls the operation of the speed changing means F (transmission device 21) and increases or decreases the opening degree of the dust feeding valve 24 in proportion to the grain culm supply amount. Under the condition (see FIG. 4) of controlling the operation of the changing means G (electric motor M ₂ for opening adjustment) and increasing / decreasing the rotation speed of the handling cylinder 2 in proportion to the grain culm supply amount. The operation of the rotation speed changing means B (transmission device 20) is controlled.

According to the control device 30, when the grain culm supply amount (vehicle speed) is increased, the following control is performed according to the increase. First, the transmission means F (transmission device 21)
And the opening change means G (opening adjustment electric motor M ₂ ).
Is controlled. As a result, both the conveying speed of the feed chain 1 and the opening degree of the dust feed valve 24 are increased so as to meet the supply of a large amount of grain culm, and thereby the proper condition that the kneading action in the handling chamber A is not excessive. Therefore, the generation of the clam grains can be avoided. Then, the rotational speed changing means B (transmission device 20)
Is also controlled. As a result, the number of rotations of the handling barrel 2 is increased so as to correspond to the supply of a large amount of grain culm, and thereby the branch stem grain detaching action from the grain culm based on the rotation of the handling barrel 2 is supplied to a large amount of grain culm. It is improved so as to be commensurate with each other, and the occurrence of the untreated portion is avoided.

On the other hand, when the grain culm supply amount (vehicle speed) decreases,
The control described below is performed according to the decrease. First, the speed change means F (speed change device 21) and the opening degree change means G
The operation control of the (opening degree adjusting electric motor M ₂ ) is performed.
As a result, both the conveying speed of the feed chain 1 and the opening degree of the dust feed valve 24 are reduced so as to correspond to the supply of a small amount of grain culm, so that the rubbing action is ineffective in performing the singulation. Sufficiency is avoided and the singulation is promoted. Then, the operation control of the rotation speed changing means B (transmission device 20) is performed. as a result,
The number of rotations of the handling cylinder 2 is reduced to correspond to the supply of a small amount of grain culm, and based on the reduction, the threshing condition is prevented from being overloaded, and the occurrence of the shedding is avoided. .

Since the transmission 20 as the rotation speed changing means B is composed of the belt continuously variable transmission as described above, the gear shifting operation of the transmission 20 causes the pulleys 20b and 20c to rotate. Need to be activated under the condition that Therefore, the control device 30 is based on the information of the grain culm switch S ₃ and the engine speed sensor S ₄ input as described above, and the grain culm switch S ₃ is in the ON state, and the engine E Condition that the rotation speed of is above a certain level (Under such conditions,
Assuming that the pulleys 20b and 20c are rotating reliably, the gear shift operation of the transmission 20 is performed.

The transmission 2 as the transmission means F
Since 1 is also composed of the belt continuously variable transmission as described above, the gear shifting operation of the transmission 21 is also performed by the pulley 21.
It is necessary to start up under the condition that b and 21c are rotating. Therefore, the control device 30 requires that the rotation speed of the second screw 9 is equal to or higher than a certain value based on the information of the screw rotation speed detection sensor S ₅ input as described above. Then, the speed change operation of the transmission 21 is performed assuming that the pulleys 21b and 21c are surely rotating.

Next, another embodiment will be described. The system
The control device 30 uses the vehicle speed sensor S₁Information,
Sensor S ₆Information and dust sensor opening sensor S₇of
It receives information and based on that information,
As a speed change means F for changing the transport speed of the chain 1,
Pulley type transmission 21 and the opening degree of the dust transfer valve 24
Electric motor for opening adjustment as opening changing means G for adjusting
M₂There may be an embodiment in which the operation of the
Be done. That is, the control device 30 controls the vehicle speed sensor S₁
Based on the information of the
The feed speed of the feed chain 1 is proportionally increased or decreased.
Under such conditions (see FIG. 2), the speed change device F (speed change device)
The operation of the storage 21) is controlled, and the grain culm supply amount is set to the above.
Conditions for proportionally increasing or decreasing the opening of the dust delivery valve 24
(See FIG. 3).
Motor M₂An embodiment is also conceivable, in which the operation of (1) is controlled.

The control unit 30 controls the amount of grain culm supplied.
The speed change means F (speed change device 2 according to the increase of (vehicle speed)
1) and the opening change means G (opening adjustment electric motor M)
₂) Is performed, it is suitable for supplying a large amount of grain culms.
The feed speed of the feed chain 1 and the dust transfer
Both the opening degree of the valve 24 is increased, whereby the handling room A
So that the rubbing action inside is not too large
Is maintained and the generation of the clams is avoided.
It In addition, the shift according to the decrease in the grain culm supply amount (vehicle speed)
Means F (transmission device 21) and the opening degree changing means G (opening degree)
Electric motor M for adjustment ₂) Operation control is performed, a small amount
Transporting the feed chain 1 to meet the supply of grain culms
Both the feed rate and the opening degree of the dust delivery valve 24 are reduced,
As a result, the kneading action is performed to perform the single grain formation.
Insufficiency is avoided and the above-mentioned singulation is promoted.
Growls

Further, in the above-described embodiment, the split pulley type transmission is adopted as the rotational speed changing means B and the speed changing means F, but the speed changing means B and F are gear type speed changing means. A device can also be employed. Then, as in the case where a gear type transmission is adopted, the rotation speed of the handling cylinder 2 and the transfer speed of the feed chain 1 are
You may change to multistep rather than stepless.

Further, in the above-mentioned embodiment, the grain culm supply amount is obtained based on the vehicle speed. However, the grain culm supply amount is calculated based on the feed chain speed and the grain culm thickness conveyed by the feed chain. May be obtained, or the grain culm supply amount may be obtained based on the thickness of the transported grain culm in the constant-speed vertical transport device that transports the cut grain culm to the feed chain.

It should be noted that reference numerals are given in the claims for convenience of comparison with the drawings, but the present invention is not limited to the configurations of the accompanying drawings by the entry.

[Brief description of drawings]

FIG. 1 is a block diagram showing a control configuration of a threshing control device.

FIG. 2 is a graph showing the relationship between the amount of grain culm supplied and the feed chain speed.

FIG. 3 is a graph showing the relationship between the amount of grain culm supplied and the opening of the dust delivery valve.

FIG. 4 is a graph showing the relationship between the amount of grain culm supplied and the number of rotations of the barrel.

FIG. 5 is a cutaway side view showing the threshing device.

FIG. 6 is an explanatory view showing a mechanism for adjusting the opening of the dust delivery valve.

FIG. 7 is an explanatory diagram showing a power transmission system.

[Explanation of symbols]

1 Feed chain 2 handle 24 Dust valve A handling room B Rotational speed change means C control means F shifting means G opening change means

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Yoshiaki Doi             64 Ishizukitamachi, Sakai City, Osaka Prefecture Kubo Co., Ltd.             Ta Sakai Factory (72) Inventor Yoshiyuki Kono             64 Ishizukitamachi, Sakai City, Osaka Prefecture Kubo Co., Ltd.             Ta Sakai Factory

Claims (2)

[Claims] 1. A combine harvester for threshing a grain culm, which is supplied into a handling room (A) by a feed chain (1) for threshing, by rotating a handling barrel (2) provided in the handling room (A). A threshing control device, which is a speed change means (F) for changing the conveying speed of the feed chain (1) and an opening degree for changing the opening degree of a dust sending valve (24) attached to the handling chamber (A). A changing means (G) is provided to control the operation of the speed changing means (F) so that the feeding speed of the feed chain (1) increases as the amount of grain culm supplied increases, and the supply of grain culm is also increased. A combine threshing control device provided with a control means (C) for controlling the operation of the opening degree changing means (G) so that the opening degree of the dust delivery valve (24) becomes larger as the amount increases. 2. A rotation speed changing means (B) for changing the rotation speed of the handling cylinder (2) is provided, and the operation of the rotation speed changing means (B) is performed as the supply amount of grain culms increases. The threshing control device for combine harvesters according to claim 1, wherein the control means (C) controls the rotation speed of the barrel (2) to be high.