JP2004089108A - Threshing-regulating device in combine harvester - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To make the delivery of a grain culm from a feeding and conveying device to a threshing feed chain good. <P>SOLUTION: The threshing-regulating device in a combine harvester is constituted so that the conveying speed of the threshing feed chain can be changed, and the conveying speed of the feeding and conveying device for feeding the grain culm to the feed chain can be changed, so as to correspond to the change in the speed of the combine harvester. The higher the speed of the combine harvester becomes, the higher the conveying speed of the feed chain and the conveying speed of the feeding and conveying device become in the threshing-regulating device. The conveying speed of the feed chain is constituted so as to be slower than the conveying speed of the feeding and conveying device. <P>COPYRIGHT: (C)2004,JPO

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a feed chain transport speed of a threshing device provided in a combine and a transport speed of a feed transport device that supplies cereals to the feed chain.
[0002]
[Prior art]
As a conventional technique, the transport speed of the feed chain is configured to increase as the vehicle speed of the combine increases, and the transport speed of the feed chain does not change below the set speed. reference.).
[Patent Document 1]
Japanese Patent No. 255554200
[Problems to be solved by the invention]
The above-mentioned combine threshing control device has the following disadvantages. That is, the transport speed of the supply transport device that takes over and transports the cereal stem to the feed chain, and the technical configuration related to the transport speed of the feed chain is not described, and therefore, depending on the conditions, the cereal stem is not transported to the feed chain. If the transfer is carried over, a situation occurs in which the transfer posture is disturbed. Specifically, if the transport speed of the feed chain is faster than the transport speed of the supply transport device, the stock is ahead and the tip side is delayed, so that the tip moves away from the handling cylinder. And left unhandled. In addition, when the cereal stem is taken over by the feed chain, the transport posture in the feed chain is disturbed, and as a result, when the straw is taken over and transported from the feed chain to the rear straw transport device, the clogging state is reduced. Had occurred.
[0004]
An object of the present invention is to provide a combine threshing control device that prevents the above-described problems.
[0005]
[Means for Solving the Problems]
The above object of the present invention is achieved by the following configuration.
That is, according to the first aspect of the present invention, the transport speed of the feed chain for threshing and the transport speed of the feed transport device for supplying the culm to the feed chain can be changed, and the vehicle speed of the combine increases as the vehicle speed of the combine increases. A threshing control device for a combine configured such that the feed speed of the feed chain and the transfer speed of the supply transfer device are large, wherein the transfer speed of the feed chain is lower than the transfer speed of the supply transfer device. The threshing control device of the combine is characterized in that it is characterized in that
[0006]
According to the first aspect of the present invention, when the combine speed is increased while the combine harvester is running, the transport speed of the feed chain for threshing and the transport speed of the supply transport device are increased. At this time, the transport speed of the feed chain for threshing is driven lower than the transport speed of the supply transport device. Therefore, the cereal culm which has been taken over from the feeding and conveying device to the feed chain for threshing is no longer conveyed at the root of the stock, and the cereal culm is substantially orthogonal to the feed chain for threshing, or And threshed.
[0007]
According to a second aspect of the present invention, there is provided the threshing control device for the combine according to the first aspect, wherein the feed chain is not shifted at a speed lower than a predetermined speed.
According to the operation of the second aspect, when the vehicle speed of the combine decreases, the transport speed of the threshing feed chain and the supply transport device decreases. At this time, even if the vehicle speed of the combine falls below a predetermined value, the conveying speed of the threshing feed chain does not shift below the predetermined speed. The culms that have been handed over will not be threshed for longer than necessary.
[0008]
【The invention's effect】
Since the present invention is configured as described above, in the invention according to claim 1, when the cereal culm being conveyed by the supply conveying device is taken over by the feed chain of the threshing device, the base side of the cereal culm is the tip side. In other words, it is possible to prevent the so-called advance of the stock company from entering the threshing apparatus first. If the culm is threshed by a threshing device during the transportation preceding the stock mill, the handling cylinder of the threshing device will reduce the amount of contact with the tip of the cereal stem, resulting in unhandled material, However, such a problem can be prevented. And since the conveyance posture in the feed chain is not disturbed, it is possible to prevent the trouble that the straw is clogged in the transfer portion from the feed chain to the rear straw conveying device.
[0009]
According to the second aspect of the present invention, when the vehicle speed of the combine is low, the grain culm that has been transferred to the threshing feed chain is quickly conveyed, so that it is not threshed more than necessary. And the first sorting can be prevented from becoming worse.
[0010]
BEST MODE FOR CARRYING OUT THE INVENTION
An embodiment of the present invention will be described with reference to the drawings.
FIG. 1 shows a combine equipped with the threshing apparatus 4 of the present invention.
A cutting device 16 for cutting planted grain culms is provided in front of a chassis 15 having a traveling device 14. On the chassis 15, the grain culms cut by the cutting device 16 are threshed and sorted by a feed chain 17 while being conveyed. The threshing device 4, an operating unit 18 for operating the combine, and a Glen tank 19 for temporarily storing the grains selected by threshing by the threshing device 4 are provided.
[0011]
Further, a lower spiral (not shown) for discharging the temporarily stored grains to the outside of the machine is provided below the Glen tank 19, and the grains transported from the lower spiral are taken over and the upper body of the combine machine is taken over. A vertical auger 20 is provided so as to be rotatable with respect to the chassis 15, and a horizontal auger 21 is provided on the vertical auger 20 so as to be able to move up and down.
[0012]
The threshing device 4 will be described with reference to FIGS.
FIG. 2 is a side view of the threshing apparatus 4, and FIG. 3 is a plan view of the threshing apparatus 4.
In the threshing device 4, a handling room 2 in which a handling cylinder 1 having a handling net 22 is supported by a handling cylinder shaft 23, and one side of the handling room 2 receives a processed material from the rear of the handling room 2. A dust processing chamber 26 is provided in which a dust processing cylinder 25 having a dust processing net 24 for processing by means of a dust processing cylinder shaft 25a is mounted. A swing sorting shelf 3 is provided below the handling room 2 and the dust processing room 26.
[0013]
A second processing chamber 29 including a second processing cylinder 27 and a second processing cylinder receiving gutter 28 (which may be a net or a grid) is provided in front of the dust processing cylinder 25. The second processing cylinder 27 is one side of the handling cylinder 1 in this embodiment, and is integrally formed with the dust processing cylinder 25 in front of the dust processing cylinder 25. The second processing cylinder 27 basically processes a second product. Since the second processing cylinder 27 is supported by the second processing cylinder shaft 27c, the dust processing cylinder 25 and the second processing cylinder 27 are integrally formed with the dust processing cylinder shaft 25a. This configuration is supported by the processing cylinder shaft 27c.
[0014]
FIG. 4 is a cross-sectional view taken along the line S1-S1 shown in FIG. 3. Since the processing object leaked from the handling net 22 is taken into the second processing chamber 29, the second processing cylinder 27 is In addition to the second object, the object to be processed entered from the inside of the handling room 2 is processed together. The handling net 22, the second processing cylinder receiving gutter 28 (which may be a net or a grid), and the dust processing net 24 are provided below the handling cylinder 1, the second processing cylinder 27, and the dust processing cylinder 25, respectively. I have.
[0015]
Below the handling chamber 2, the second processing chamber 29, and the dust processing chamber 26, a swing sorting shelf 3 for receiving and sorting falling objects to be sorted is installed. Is provided at the starting end side of the sorting wind feeding direction, and the lowermost spiral 6 is provided on the lower side in the feeding direction of the sorting wind blown from the latter, and the sorting wind feeding direction of the first spiral 6 is provided below. A second spiral 7 is provided on the lower side. A second frying cylinder 41 for frying the second product collected in the second spiral 7 into the second processing chamber 29 is provided.
[0016]
The configuration of the swing sorting shelf 3 will be described. The swinging sorting shelf 3 includes, in order from the starting end in the sorting and feeding direction, a transfer shelf 3a for transferring the dropped threshing material backward, a grain sheave 3b for sorting threshing material, a chaff sheave 3c for sorting secondary materials, and dust removal. And a straw rack 3d which is transported outside the machine and discharged. The lower part of the straw rack 3d is constituted by a second shelf 7a for guiding a second object into the second spiral 7, and the dust discharge processing cylinder 25 extends to near the end of the second shelf 7a. It is a configuration that is out. The suction fan 8 is for discharging the light dust in the sorting chamber 30 to the outside of the apparatus, and is provided at a position facing the dust processing cylinder 25 with respect to the handling cylinder 1.
[0017]
In a combine equipped with such a threshing device 4, the power from the engine 44 (shown in FIG. 5) is input to the traveling transmission device 32, and the traveling device 14 is driven by changing the speed to an arbitrary speed. The combine then starts moving forward. In order to perform the harvesting and threshing work, further, the power is transmitted from the engine to the mowing device 16, the supply and transport device 31, and the threshing device 4, and the work is performed. When the combine moves forward in such a state, the planted grain culm is weeded by the weeding tool 33, raised by the raising lug 35 of the raising case 34, and then cut by the cutting blade 36, and cut. The harvested grain culm is transported by the stock transport device 37 toward the rear end of the supply transport device 31.
[0018]
The grain culm transported to the end of the stock transporter 37 is taken over by the start end of the supply transport device 31 at the rear, and then the grain culm transported to the end of the feed transporter 31 is removed by the threshing device 4. The cereal stalk taken over by the starting end of the feed chain 17 and carried over by the feed chain 17 is threshed by the handling cylinder 1 and the handling net 22 while being transported backward. A part of the threshed falls and falls on the swing sorting shelf 3 and is sorted by the swing operation of the swing sorting shelf 3 and the wind sorting action from the Karamin 5 and is taken into the first spiral 6. The grains taken into the first spiral 6 are temporarily stored in the Glen tank 19. The thresh after threshing is carried over from the end of the feed chain 17 to the beginning of the thresh chain 38, and then conveyed to the cutter 39 to be cut off and discharged to the lower field. It has become.
[0019]
The remaining thresh in the handling room 2 is transported rearward, and some of the thresh is taken into the second processing chamber 29 on the way. The thresh taken into the second processing chamber 29 is threshed by interaction between the second processing cylinder 27 and the second processing cylinder receiving gutter 28 while being conveyed to the upper side in the sorting air feeding direction (particularly, branch spikes). The grains are processed) and fall on the swinging sorting shelf 3 below. The handling cylinder 1, the second processing cylinder 27, and the dust processing cylinder 25 are configured to rotate clockwise in a state where the sorting wind feed direction is viewed from the upper side to the lower side (the front view of the threshing device 4). Therefore, it is necessary to fix the direction of the processing teeth 27a of the second processing cylinder 27 in such a direction as to feed the thresh to the upstream side in the sorting wind feeding direction.
[0020]
That is, the processing teeth 27a have an operation of transporting the processing object to the upstream side in the sorting air feeding direction, and further have an operation of processing the processing object. That is, the processing tooth 27a is a part of a spiral, and is configured to process an object to be processed by an interaction between the distal end in the circumferential direction and the second processing cylinder receiving gutter 28. The blade 27 b provided at the transport end of the second processing cylinder 27 is for forcibly sending an object to be processed onto the swing sorting shelf 3.
[0021]
It is necessary to fix the dust-treating teeth 25b of the dust-treating cylinder 25 in a direction such that threshing from the rear part of the handling chamber 2 is sent in the lower direction of the sorting wind feed direction. In the present embodiment, the dust processing teeth 25 b have a helical shape wound around the outer peripheral surface of the dust processing cylinder 25.
[0022]
However, in this embodiment, since the mesh of the dust treatment net 24 is rough (lattice-like), some short straw chips fall on the swing sorting shelf 3 and long straw chips that do not fall are dust-discharged. It is conveyed to the terminal end of the processing chamber 26, and is forcibly discharged onto the straw rack 3d by the blade 40 at the terminal end of the dust treatment cylinder 25. While the object to be treated is conveyed in the dust treatment chamber 26 in this way, the interaction between the dust treatment cylinder 25 and the dust treatment net 24 further thresh, and the thresh is loosened. In this configuration, grains (so-called sari grains) mixed therein are taken out, fall on the swinging sorting shelf 3 below, and are further collected into the second spiral 7.
[0023]
As described above, the thresh in the handling room 2 does not fall on the swing sorting shelf 3 and is not taken into the second processing chamber 29. Conveyed. The thresh carried to the terminal end of the handling room 1 is taken into the dust treatment chamber 26, and the taken thresh is carried to the lower side in the sorting air feeding direction. Also, of the thresh conveyed to the end of the handling room 2, thresh not taken into the dust treatment chamber 26 falls onto the lower swing sorting shelf 3.
[0024]
When the thresh is sent from the end portion in the handling room 2 into the dust treatment chamber 26, the dust transfer cylinder is also provided in the transfer portion from the handling chamber 2 to the dust treatment chamber 26 so that the thresh is not clogged. A helical dust-treating tooth 25b is provided on the outer periphery of the tooth 25 so that the feed-through action of the dust-treating tooth 25b prevents the transfer portion from being clogged with threshing material.
[0025]
In spite of the above-mentioned swinging action of the swinging sorting shelf 3 and the action of the sorting wind from the Karamin 5, the remaining grains that were not most taken into the spiral 6 further together with other dusts. It is sent backward and is taken into the second spiral 7. The second product taken into the second spiral 7 is returned to the lower side of the second processing chamber 29 in the sorting air feeding direction by the second fryer 41 and merges with the thresh from the handling chamber 2. Then, while being conveyed to the upstream side in the sorting wind direction, while being conveyed while being threshed by interaction with the second processing drum receiving gutter 28, the blade 27b at the end portion moves to the lower swinging sorting shelf 3 on the lower side. It is a structure that falls forcibly.
[0026]
Next, FIG. 5 will be described.
This figure shows a transmission mechanism diagram of the entire combine. The power of the engine 44 is transmitted from the output shaft 45 to the cutting unit B, threshing unit C, and traveling unit D, respectively. A pulley 46 is fixed to an end of an output shaft 45 of the engine 44, and power is transmitted to a threshing input shaft 49 via a belt 47 and a pulley 48. A bevel gear 51 is fixed to the other end of the threshing input shaft 49, and power is transmitted from the bevel gear 52 meshing with the bevel gear 51 to the second processing cylinder shaft 27c, and the second processing cylinder 27 and the dust processing cylinder Reference numeral 25 denotes a configuration driven to rotate.
[0027]
A gear 53 is fixed to the second processing cylinder shaft 27c, and power is transmitted from the gear 53 to a counter gear 54, a gear 55, and a shaft 56, and further from a pulley 57 fixed to the shaft 56. The handling cylinder shaft 23 and the handling cylinder 1 are configured to be rotationally driven via a belt 58 and a pulley 59. Further, the culm chain 38 is configured to be driven from the rear portion of the handling cylinder shaft 23.
[0028]
A pulley 50 is fixed to the threshing input shaft 49, and a Karino shaft 53 is rotationally driven from the pulley 50 via a belt 51 and a pulley 52. Further, a pulley 54 is fixed to the Karin shaft 53 from a belt 55 and a pulley. The power is transmitted to a swing shaft 57 that swings the swing sorting shelf 3 via the swing sorting shelf 3. A pulley 58 is fixed to the swinging shaft 57, and a shaft 61 is rotationally driven from the pulley 58 via a belt 59 and a pulley 60, and further, a shaft 64 is fixed from a gear 62 fixed to the shaft 61 via a gear 63. And the feed chain 17 of the threshing apparatus 4 is rotationally driven from a sprocket 65 fixed to the shaft 64. The pulley 60 is provided with a one-way clutch 61a.
[0029]
A pulley 67 is fixed to the other end of the shaft 53, and the first spiral 6, the second spiral 7, the suction fan 8, and the cutter 39 are driven from the pulley 67.
On the other hand, another pulley 68 is fixed to the engine output shaft 45, and the lower spiral 69 below the Glen tank 19 is rotationally driven from the pulley 68, and the vertical auger 20 and the horizontal auger 21 connected to the lower spiral 69 are connected. Are rotated and the grains in the Glen tank 19 are discharged out of the machine.
[0030]
Further, another pulley 70 is fixed to the engine output shaft 45, and the traveling section D is driven to rotate by the pulley 70. The input shaft 73a of the hydraulic continuously variable transmission 73 is rotationally driven from the pulley 70 via the belt 71 and the pulley 72, and the rotational driving force is determined in accordance with the amount of inclination of the swash plate of the variable hydraulic pump 73b. The amount of oil supply to the motor 73c is determined, and the output shaft 73d rotates according to the amount of oil supply. A gear 74 is fixed to the other end of the output shaft 73d, and a shaft 77 is rotated from the gear 74 via a counter gear 75 and a gear 76.
[0031]
A pulley 78 is fixed to the other end of a shaft 75a supporting the counter gear 75, and the shaft 61 is driven from the pulley 78 via a belt 79 and a pulley 80. The pulley 80 is provided with a one-way clutch 80a. As described above, the shaft 61 is also provided with the pulley 60, and therefore, the feed chain 17 of the threshing device 4 is rotationally driven from two systems of the power transmitted to the pulley 60 and the power transmitted to the pulley 80. Configuration. In the case of the combine, since the engine 44 is driven at a constant rotational speed, the power transmitted to the pulley 60 is driven at a predetermined rotational speed, while the power transmitted to the pulley 80 is transmitted via a hydraulic continuously variable transmission 73. Therefore, it is configured to be driven at a rotation speed variable according to the vehicle speed of the combine.
[0032]
When the feed chain 17 is driven at the rotational speed transmitted from the hydraulic continuously variable transmission 73 to the pulley 80, the rotational speed of the feed chain 17 increases and decreases in proportion to the vehicle speed of the combine. In addition, since the rotation speed of the cutting unit B also increases and decreases in proportion to the vehicle speed of the combine, the difference between the rotation speed of the cutting unit B and the rotation speed of the feed chain 17 is reduced regardless of the vehicle speed of the combine, and the grain culm is reduced. Is smoothly carried over from the reaping section B to the feed chain 17. Further, since the drive of the feed chain 17 is taken out from the traveling transmission device 32, another device for shifting the feed chain 17 is unnecessary, and the cost is reduced.
[0033]
The shaft 77 extends through the traveling transmission 32 to the other side, and a pulley 81 is fixed. An auxiliary transmission portion 82 is provided in the intermediate portion of the shaft 77 and in the traveling transmission device 32, and the traveling device 14 is driven through the left and right side clutch brake portions 83L and 83R on the lower side in the power transmission direction. Configuration.
[0034]
The rotation drive of the pulley 81 is transmitted to the cutting unit B. That is, the cutting input shaft 86 is driven from the pulley 81 via the belt 84 and the pulley 85, and further, the cutting blade 36, the raising device 34, and the stock from the bevel gear 87 provided at an intermediate portion of the cutting input shaft 86 via the bevel gear 88. The original transport device 37 and the like are driven. Further, a gear 89 is fixed to the other end of the cutting input shaft 86, and the feeding and conveying device 31 is driven from the gear 89 via a gear 90, a shaft 91, a bevel gear 92, a bevel gear 93, and a shaft 94. It is.
[0035]
The supply / conveyance device 31 includes a stock chain 31a for nipping and carrying the stock side of the grain culm and a tip rug 31b for carrying the tip side of the grain culm. Since the supply / conveyance device 31 is driven via the hydraulic continuously variable transmission 73, the conveyance speed is varied according to the change in the vehicle speed of the combine. Needless to say, since the entire mowing section B is also driven via the hydraulic continuously variable transmission 73, the number of revolutions is variable in accordance with a change in the vehicle speed of the combine.
[0036]
As described above, the transport speed of the feed transport device 31 and the transport speed of the feed chain 17 of the threshing device 4 are both configured to be variable according to changes in the vehicle speed of the combine, and specifically, the vehicle speed of the combine is high. It is configured so that the transport speed of the supply transport device 31 and the feed chain 17 increases as much as possible.
[0037]
In the relationship between the transport speed of the feed chain 17 and the transport speed of the supply transport device 31, the transport speed of the feed chain 17 is configured to be lower than the transport speed of the supply transport device 31. A graph of this relationship is shown in FIG. The horizontal axis is the vehicle speed of the combine and the vertical axis is the transport speed.
[0038]
Thereby, when the cereal culm being conveyed by the supply conveyance device 31 is taken over by the feed chain 17 of the threshing device 4, the root side of the cereal culm enters the threshing device first with respect to the ear tip side, so-called, It will be possible to prevent stock market precedence. If the grain culm is threshed by the threshing device 4 in the transport preceding the stock root, the amount of the handling cylinder 1 abutting on the tip portion decreases, so that unhandled portions are generated or transported by the feed chain 17. Although the posture is disturbed, the occurrence of such a problem can be prevented. And since the conveyance attitude | position in the feed chain 17 is not disturbed, in the transfer part from the feed chain 17 to the straw discharge conveyance device 38 of the back, the trouble that a straw is clogged can also be prevented.
[0039]
Next, FIG. 7 will be described.
With respect to the transport speed of the feed chain 17 of the threshing apparatus 4, the transport speed of the feed chain 17 is not changed below the predetermined speed when the combine vehicle speed is lower than the predetermined speed E. Specifically, the feed chain speed is maintained at a constant G speed as shown by a line F. To realize this configuration, as described above, the shaft 61 is provided with the pulley 60 having the one-way clutch 61a and the pulley 80 having the one-way clutch 80a.
[0040]
Therefore, of the rotational power transmitted to the pulley 60 and the pulley 80, the higher rotational speed is transmitted to the shaft 61. That is, when the vehicle speed of the combine is low, the rotation speed of the pulley 60 rotating at a predetermined rotation is higher than the rotation speed transmitted to the pulley 80 from the hydraulic continuously variable transmission 73, so that the vehicle speed of the combine When the speed is slow, the feed chain 17 is driven by the rotation speed from the pulley 60 rotating at a predetermined rotation.
[0041]
As a result, when the vehicle speed of the combine is low, the grain culm carried over to the threshing feed chain 17 is quickly conveyed, so that it is not threshed more than necessary, and therefore, the generation of straw waste is reduced. It is possible to prevent the first sorting from becoming worse.
[0042]
In such a state, the transport speed of the feed chain 17 is faster than the transport speed of the supply transport device 31, but all transport speeds are slow, and therefore, the difference in transport speed is small. Therefore, there is a slight precedence of the shareholder, but there is basically no problem.
[0043]
Again, when the vehicle speed of the combine increases, the rotation speed of the pulley 80 transmitted and rotated from the hydraulic continuously variable transmission 73 becomes faster than the rotation speed of the pulley 60 rotating at a predetermined value. Reference numeral 17 denotes a speed change drive at the power transmitted to the pulley 80, that is, the rotation speed after passing through the hydraulic continuously variable transmission 73 (line H).
[0044]
Next, FIG. 8 will be described.
This figure shows the configuration of the drive unit 97 of the swing sorting shelf 3. A cam 57a is fixed to a swing shaft 57 that drives the swing sorting shelf 3. Further, arm plates 100a and 100b are loosely fitted to the machine frame side of the threshing device 4 with pins 99. An eccentric portion of the cam 57a is loosely fitted with a pin 101 between the arm plates 100a and 100b and above the pin 99. Further, a metal 95 is loosely fitted with a pin 98 above the pin 101, and the swing sorting shelf 3 is fixed to the metal 95 with a bolt 96.
[0045]
When the swinging shaft 57 rotates, the cam 57a moves eccentrically, so that the arm plates 100a and 100b swing back and forth with the pin 99 loosely fitted on the machine frame side of the threshing device 4 as a fulcrum. It is transmitted to the swing sorting shelf 3 via the pin 98 and swings.
[0046]
When the pin 98 is removed, the swing sorting shelf 3 is detached from the rear of the threshing device 4 to the outside of the machine, but when the swing sorting shelf 3 is attached again, the holes and the arms of the metal 95 of the swing sorting shelf 3 It is difficult to match the holes of the plates 100a and 100b. In particular, when the swing sorting shelf 3 is inserted from the rear of the threshing device 4, the hole of the metal 95 overruns forward from the positions of the holes of the arm plates 100a and 100b due to the momentum.
[0047]
Therefore, a stopper 95a for positioning is integrally formed on the metal 95. When the stopper 95a comes into contact with the arm plates 100a and 100b, the holes of the metal 95 and the holes of the arm plates 100a and 100b are aligned. Constitute.
Accordingly, the swing sorting shelf 3 can be easily attached and detached, and the work efficiency is improved.
[Brief description of the drawings]
FIG. 1 is a left side view of a combiner. FIG. 2 is a left side view of a threshing apparatus. FIG. 3 is a plan view of a threshing apparatus. FIG. 4 is a front sectional view of the threshing apparatus. FIG. 5 is a transmission mechanism diagram. FIG. 7 is a diagram showing the relationship between the vehicle speed, the feed chain speed, and the supply / conveyance device speed. FIG. 7 is a diagram showing the relationship between the vehicle speed, the feed chain speed, and the supply / conveyance device speed. FIG. 8 is a perspective view.
4 threshing device, 17 feed chain, 31 feeding and conveying device.

Claims (2)

The transport speed of the feed chain for threshing and the transport speed of the supply transport device for supplying grain culms to the feed chain can be changed, and the transport speed of the feed chain and the transport device of the feed chain increase as the combine vehicle speed increases. Threshing control device for the combine, wherein the transport speed of the feed chain is lower than the transport speed of the supply transport device. apparatus. The threshing control device of a combine according to claim 1, wherein the feed chain is not shifted at a speed lower than a predetermined speed.

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