JPH0522A - Controller for threshing of combine - Google Patents

Abstract

PURPOSE:To eliminate defective threshing by providing a controlling means for increasing the conveying speed of a feed chain and the rotational frequency of a threshing drum 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 a rotational frequency changing means (B) for changing the rotational frequency of a threshing drum 2 is installed. The operation of the changing means (F) and the rotational frequency changing means (B) are controlled by a controlling means to increase the conveying speed of the feed chain and the rotational frequency of the threshing drum with increasing feed rate of grain culms.

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 particularly to a grain culm supplied to 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 threshing control device for a combine for threshing.

[0002]

2. Description of the Related Art In a conventional combine threshing control device, the feed speed of the feed chain is set to a constant value regardless of the amount of grain culm supplied, and the number of rotations of the handling cylinder is equal to the amount of grain culm supplied. It was set to a constant value no matter how.

[0003]

When the feed speed of the feed chain is set constant as described above, if the feed rate of the grain culm increases, the feed speed of the feed chain becomes higher than the condition corresponding to the feed rate. Is too small. Under such conditions, the rubbing action in the handling room becomes excessive, resulting in desquamation or clam grains (grains enter the stems of the culms transported by the feed chain). However, there is a problem that defective threshing occurs. On the other hand, when the grain culm supply amount decreases, the feeding speed of the feed chain becomes excessively higher than the condition corresponding to the supply amount. Under such conditions, the rubbing action becomes excessively small, and the singularization of the branch shoot grains (removal of the branch shoots from the branch shoot grains) becomes insufficient, resulting in defective threshing. I found out. Further, in the case where the rotation speed of the handling cylinder is set to be constant as described above, when the grain culm supply amount increases, the rotation speed of the handling barrel becomes less than the condition corresponding to the supply amount. Under such conditions, the branch stem grain detaching action from the grain culm based on the rotation of the handling barrel is reduced, and untreated (the branch stem grain is not completely detached from the grain culm), resulting in defective threshing. There was a problem to do. On the other hand, when the grain culm supply amount decreases, the number of rotations of the handling cylinder becomes higher than the condition corresponding to the supply amount. It has been found that under such conditions, threshing conditions become excessive and threshing occurs, resulting in defective threshing. 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]

The threshing control device for combine harvesters according to the present invention is characterized in that: speed changing means for changing the feed speed of the feed chain; rotation speed changing means for changing the rotation speed of the handling cylinder. Is provided, and the operation of the speed changing means is controlled so that the feed speed of the feed chain becomes higher as the supply amount of the grain culms becomes larger, and the rotation speed of the handling cylinder becomes larger as the supply amount of the grain culms becomes larger. Therefore, a control means for controlling the operation of the rotation speed changing means is provided.

[0005]

According to the device of the present invention having such a characteristic configuration,
In response to an increase in the supply amount of grain stalks, the control means operates the speed changing means, and the operation increases the transport speed of the feed chain to meet a large amount of grain stalk supply. The rubbing action in step 1 is maintained under proper conditions that are not excessive, and the generation of the clam grains is avoided. Moreover, the rotation speed changing means is operated in response to an increase in the grain culm supply amount, and the rotation speed of the handling cylinder is increased by the operation so as to correspond to the supply of a large amount of grain culm. The branch stem grain detaching action from the grain culm based on the rotation of the barrel is improved so as to correspond to the supply of a large amount of grain culms, and the occurrence of the untreated residue is avoided. On the other hand, in response to the decrease in the grain culm supply amount, the operation of the speed change means by the control means is performed, and by the operation, the feed speed of the feed chain is reduced to meet the small grain culm supply, Insufficient rubbing action for performing the pulverization is avoided, and the pulverization is promoted. Moreover, the rotation speed changing means is operated in response to the decrease in the grain culm supply amount, and the rotation speed of the handling cylinder is reduced by the operation so as to be commensurate with the small grain culm supply, and the threshing condition is reduced by the reduction. Is prevented from being overloaded, and the occurrence of the removal is avoided.

[0006]

Therefore, according to the device of the present invention, the threshing failure that has conventionally occurred in various cases (specifically,
As described above, it is possible to eliminate the generation of clam grains, the generation of untreated grains, the shortage of single grains, the occurrence of decapsulation, etc., and it is possible to improve the processing capacity of the threshing device.

[0007]

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

1 to 5 show an embodiment of a threshing control device for a combine according to the present invention. The threshing device in the combine, as shown in FIG. 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 sardines 5 that sends sorting air to the swinging sorting plate 4, and the swinging sorting plate 4 are sent from the handling chamber A. A rotary diffusion drum 6 that acts on straw, a dust removal 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.

A power transmission system of such a combine will be described. As shown in FIG. 5, the driving force of the engine E is transmitted to the traveling transmission 13 through the belt transmission, and the rotary shaft 2a of the handling cylinder 2 and the rotary shaft 5 of the Karako 5 are transferred.
a, transmitted to each of the first screws 8 via a belt transmission and a gear transmission. In addition, a belt transmission device provided at an output portion of the engine E for transmitting the driving force of the engine E to the rotary shaft 2a of the handling cylinder 2 and the like transmits and receives power transmission from the engine E to the threshing device to perform a threshing operation. A clutch 14 is provided, and the threshing clutch 14 is provided.
Is equipped with a threshing switch S ₃ for detecting whether it is in the ON state or the OFF state. Further, the output shaft of the engine E is provided with an engine speed detection sensor S ₄ for detecting the speed of the engine E. Then, the detection information from the threshing switch S ₃ and the detection information from the engine speed detection sensor S ₄ are input to the control device 30 (see FIG. 1) using a microcomputer.

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 selecting plate 4 in that order. Being transmitted. In the figure, 15 is the swing shaft 4a.
Reference numeral 16 denotes a straw cutter that is driven to rotate by a belt and further driven to rotate by a driving force that is further transmitted to the belt. 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 detection sensor that detects the rotation speed of the second screw 9, and the detection information by the screw rotation speed detection sensor S ₅ is also input to the control device 30. As the screw rotation speed detection sensor S ₅ , a sensor originally provided for detecting clogging in the second screw 9 may be used.

The rotating shaft 2a of the handling 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, and the output pulley 20c is the above-mentioned handle. 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. The rotary shaft 2a of the threshing drum 2 which speed is changed based on the shifting operation of such a transmission 20, thresher rotational speed sensor S ₂ for detecting the number of revolutions is attached. Information detected by the handling cylinder rotation speed sensor S _{2 is} also input to the control device 30.

The dust-exhausting fan 7 rotates the diffusion cylinder 6.
Split pulley type transmission 21 (belt continuously variable
Rotation driven by the driving force transmitted to the belt via the transmission.
It is supposed to be done. The transmission 21 is
The input shaft 21a, which is gear-transmitted from the rotary shaft 6a of the spreader 6,
The attached input pulley 21b and the input pulley 21
b is provided with an output pulley 21c which is transmitted by a belt,
The output pulley 21c is attached to the rotary shaft 7a of the dust removal fan 7.
It is installed. The input pulley 21b and the output pool
It is configured with a split pulley type together with
When changing from small to large, the other diameter changes in conjunction with changing from large to small.
It is being changed. Through the transmission 21
The driving force transmitted to the dust removal fan 7 is a gear type deceleration.
The feed chain is provided through the mechanism 22 and the clutch 23.
Is transmitted to the drive sprocket 1a
And when the transmission 21 is operated, the dust collecting flap
Gear 7 and feed chain 1 work together to shift gears
Growls That is, the split pulley type transmission 21 is
Speed change means for changing the conveying speed of the feed chain 1
Functions as F. Based on the shifting operation of the transmission 21,
Of the feed chain 1 whose transport speed is changed based on
For the drive sprocket 1a, the rotation speed is
Feed chain that is detected in order to obtain the transport speed of chain 1.
Sensor S ₆Is attached. That feed chain
Sensor S₆The detection information by the input is also input to the control device 30.
It is supposed to be done.

As shown in FIG. 1, the control unit 30 controls the information of the vehicle speed sensor S ₁ and the feed chain sensor S ₆
And the information of the handling cylinder rotation speed sensor S ₂ , and based on the information, a split pulley type transmission device 21 as the transmission means F and a split pulley type transmission device 20 as the rotation speed changing means B. Functioning as control means C thereof. Specifically, the control device 3
0 determines the grain culm supply amount based on the information of the vehicle speed sensor S, and the gear shift is performed under a condition (see FIG. 2) in which the transport speed of the feed chain 1 is proportionally increased or decreased to the grain culm supply amount. The operation of the transmission device 20 is controlled under the condition that the operation of the device 21 is controlled and the rotation speed of the handling cylinder 2 is increased or decreased in proportion to the grain culm supply amount (see FIG. 3).

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. That is, the shift means F is operated,
Due to the operation, the feed speed of the feed chain 1 is increased so as to correspond to the supply of a large amount of grain stalks, and due to the increase, the kneading action in the handling chamber A is maintained under an appropriate condition that is not excessive, and Occurrence will be avoided. Moreover, the rotation speed changing means B is operated, and the rotation speed of the handling cylinder 2 is increased by the operation so as to correspond to the supply of a large amount of grain culm, and the increase causes the large amount of the branch stem grain detaching action. It is improved to meet the culm supply, and the occurrence of the untreated portion is avoided. on the other hand,
When the grain culm supply amount (vehicle speed) decreases, the following control is performed according to the decrease. That is, the speed change means F is operated, and the operation reduces the transport speed of the feed chain 1 so as to correspond to the supply of a small amount of grain culm, and the decrease causes the kneading action to perform the single grain formation. Insufficiency is avoided, and the singulation is promoted. Moreover, the rotation speed changing means B is operated, and the rotation speed of the handling cylinder 2 is reduced by the operation so as to correspond to the supply of a small amount of grain culm, and it is avoided that the threshing condition is overloaded due to the reduction. As a result, the occurrence of the removal is avoided.

Since the transmission 20 as the rotation speed changing means B is constituted by 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 surely rotating), the gear shift operation of the transmission 20 is performed.

A transmission 2 as the transmission means F
1 is also composed of the belt continuously variable transmission as described above, the gear shifting operation of the transmission 21 is also 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 number of rotations of the second screw 9 is equal to or higher than a certain value based on the information of the screw rotation number 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. In the above-described embodiment, the split pulley type transmission is adopted as the rotation speed changing means B and the speed changing means F. However, a gear type transmission is adopted as the speed changing means B and F. You can also Then, as in the case of adopting a gear type transmission, the rotation speed of the handling cylinder 2 and the conveying speed of the feed chain 1 may be changed in multiple steps instead of steplessly.

Further, in the above-mentioned embodiment, the grain culm supply amount is determined 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 a constant-speed vertical transport device that transports the cut grain culm to the feed chain.

It should be noted that although reference numerals are given in the claims for convenience of comparison with the drawings, the present invention is not limited to the structures 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 number of rotations of the handling cylinder.

FIG. 4 is a cutaway side view showing a threshing device.

FIG. 5 is an explanatory diagram showing a power transmission system.

[Explanation of symbols]

 1 Feed chain 2 Handling cylinder A Handling room B Rotational speed changing means C Control means F Speed change means

Claims (1)

Claims: 1. A grain culm supplied into a handling room (A) by a feed chain (1) for threshing is provided in a handling barrel (2) provided in the handling room (A). A combine threshing control device for threshing by rotation, comprising: speed change means (F) for changing the conveying speed of the feed chain (1) and rotation speed changing means (B) for changing the rotation speed of the handling cylinder (2). ) Are provided, and the speed change means (F) is arranged so that the feeding speed of the feed chain (1) becomes higher as the amount of grain culm supplied increases.
And a control means (C) for controlling the operation of the rotation speed changing means (B) such that the rotation speed of the handling cylinder (2) increases as the amount of grain culm supplied increases. Combine harvesting control device provided.