JPH0662643A - Thresh-controlling apparatus of combine - Google Patents

Abstract

PURPOSE:To prevent the delivery miss of culms from a transfer apparatus to a feed chain for threshing by changing the speed exclusively in the case that the culm is transferred in the longitudinal direction of the machine body. CONSTITUTION:A 2nd speed changer 21 having a split pulley structure functions as a speed changing means F to change the transfer speed of a feed chain 15. The control of the transfer speed of the feed chain 15 by the information transmitted from a feed chain sensor S6 and a culm thickness sensor S8 is carried out exclusively when the transfer direction of the culm of a longitudinal transfer apparatus is parallel to the machine direction. The action of the 2nd speed changer 21 is controlled in such a manner as to increase the transfer speed of the feed chain 15 by the increase of the transfer amount of the threshed culm. When the culm is not linearly transferred by the change of the position of a reap-pretreatment part G1 along the lateral direction of the machine body, the speed-changing operation is stopped to prevent the transfer miss of the reaped culm to the feed chain 15. Accordingly, the obtained thresh-controlling apparatus of the combine realizes excellent threshing treatment, is free from troubles such as clogging of the transferred culm and has excellent reliability.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a threshing grain culm conveying amount detecting means for detecting a conveying amount of a threshing grain culm conveyed by a threshing feed chain, a speed changing means for changing a conveying speed of the feed chain, and Based on the information of the threshed culm culm transport amount detection means, the control means for controlling the operation of the speed change means such that the transport speed of the feed chain increases as the threshed culm culm transport amount increases The present invention relates to a threshing control device.

[0002]

2. Description of the Related Art In the above-mentioned combine threshing control device, even if, for example, the planting density of grain culms in the field fluctuates, the amount of threshed grain culms conveyed by the threshing feed chain can be accurately measured. In order to detect and perform threshing control under more appropriate conditions, information on the layer thickness of the grain culms actually transported into the handling chamber by the feed chain and its transport speed (specifically, the layer thickness and The product of the transport speed) is used to detect the transport rate of the threshed culms, and the transport speed of the feed chain is increased if the transport rate of the threshed culms is increased under the condition that the number of rotations of the barrel is constant. By speeding up the discharge of the grain culms in the handling room, it avoids the threshing defects such as depletion and clam grains that occur when the kneading action in the handling room is excessive, while conversely reducing the amount of grain culm transported. Feed chain if less By culms in the transport speed by decelerating threshing chamber from being discharged unnecessarily fast in,
It is intended to avoid threshing defects such as insufficient singularization of branch stem grains which occur when the kneading action is too small.

By the way, depending on the combine, in order to properly perform various cutting operations such as splitting work and swiveling work, the cutting pretreatment unit for raising and cutting the planted grain culms in the field has a lateral width of the machine body. Some are configured so that the position can be changed in any direction. That is, in the middle work where the uncut grain culms are located on both the left and right sides of the machine body, the pre-crop processing unit is moved to the center side position in the lateral direction of the machine body to suppress trampling of the uncut grain culms on both the left and right sides, while In the mowing work, the mowing pretreatment section is located on the side of the unmachined side of the machine body in the lateral width direction (this is also the side where the feed chain is located) to keep the distance between the uncut grain and the machine body. By making it wider, it is possible to avoid the trampling of uncut grain culms and to perform the harvesting work efficiently.

[0004]

However, according to the above-mentioned conventional means, as shown in FIG. 6, when the pre-cutting processing section G1 is located on the side of the machine side, the pre-cutting processing section G1 is provided.
The transport direction of the transport device 8 for transporting the harvested grain culm from the transport device 8 to the feed chain 15 is along the longitudinal direction of the machine body, and the transfer direction of the grain culm from the transport device 8 to the feed chain 15 is linear. Therefore, even when the feed speed of the feed chain is changed as described above, the grain culm delivery can be performed satisfactorily without a transport error, while when the pre-mowing processing unit is located on the center side of the machine body, 5
As shown in Fig. 2, the grain culm transport direction of the transport device is oriented obliquely to the machine front-back direction, and the grain culm sending direction from the transport device and the grain culm receiving direction of the feed chain are deviated, so that the feed chain When the transfer speed is changed, there is a possibility that a problem may occur in that the transfer of the transfer grain culms from the transfer device to the feed chain is not properly performed. In particular, in the case where the transporting device or the like is not shifted in synchronization with the vehicle speed, the transport speed of the feed chain is shifted in accordance with the change in the harvested culm or threshed culm transport amount based on the change in the vehicle speed, Since the transport speed of the transport device or the like is maintained at a predetermined speed regardless of the vehicle speed, the above-mentioned problem becomes remarkable.

The present invention has been made in view of the above circumstances, and an object thereof is to control the shift of the feed chain for threshing according to the amount of the culm and the pre-mowing processing unit in the lateral direction of the machine body. In the case where the position can be freely changed, it is possible to deliver the cut culm to the threshing feed chain without mistakes.

[0006]

The first characteristic configuration of the combine threshing control device of the present invention is that the cutting pretreatment section for raising and cutting the grain culm is located on the side where the feed chain is located in the machine lateral direction. A transfer device, which is provided at the machine lateral side end side position and the machine center side position so as to be positionally changeable, and which conveys the harvested grain culm from the reaping pretreatment section to the feed chain, is the aforesaid reaping pretreatment section. Along with the position change to the machine side side end side position and the machine center side position respectively, the grain culm conveying direction is changed to a state in which it is aligned with the machine front-rear direction and a state in which it is directed obliquely to the machine front-rear direction. The control means is provided so as to change the feed chain transport speed based on the information of the threshed grain culm transport amount detection means only when the grain culm transport direction of the transport device is in the longitudinal direction of the machine. The lies in being configured to execute.

In addition to the first characteristic construction, the second characteristic construction is provided with a rotation speed changing means for changing the rotation speed of the handling cylinder, and the control means is arranged to convey the grain culm of the conveying device. Only when the direction is along the longitudinal direction of the machine, based on the information of the threshed culm culm transport amount detection means, the rotation speed is changed so that the rotation speed of the handling cylinder increases as the threshed culm culm transport amount increases. It is arranged to control the operation of the means.

[0008]

According to the first characteristic construction of the present invention, the cutting pretreatment section is repositioned to the side end portion side of the machine body on the side where the feed chain is located so that the grain culm conveying direction of the conveying device is the machine longitudinal direction. When the grain culm is conveyed in a straight line from the conveyor device to the feed chain, the feed chain speed shift control is executed according to the increase or decrease in the amount of the threshed grain culm conveyed, while the pre-cutting process is performed. The part has been moved to the center of the machine, and the direction of the conveyor for transferring the grain culms has become oblique with respect to the longitudinal direction of the machine.There is a difference between the direction of sending grain corn from the conveyor and the direction of receiving grain culms from the feed chain. In the above state, the feed chain shift control is not executed and the feed chain is maintained at a predetermined speed.

According to the second characteristic configuration, the pre-reaping processing unit performs the above-mentioned control not only for the speed change control of the feed chain speed, but also for the change control of the handling cylinder rotational speed in accordance with the increase or decrease in the transport amount of the threshed culm. When the position is changed to the side end portion side of the machine body, the change control is executed, while when the pre-mowing processor is changed to the center position of the machine body, the change control is not executed and the rotation speed is maintained at a predetermined rotation speed.

[0010]

As described above, according to the first characteristic construction of the present invention, while performing the threshing processing properly by executing the shift control based on the feed chain speed of the threshed culm conveying amount as much as possible,
When the grain culm is not conveyed linearly due to the position change of the pre-mowing processing unit in the lateral direction of the machine body, the above shift control is stopped to avoid the conveyance error of the cultivated grain culm to the feed chain, and thus good threshing is performed. It is possible to obtain a combine threshing control device that is excellent in reliability without causing troubles such as clogging of transported grain culms as the processing is realized.

Further, according to the second characteristic configuration, in addition to the above-mentioned speed change control of the feed chain speed, a change control based on the threshing culm transfer amount of the handling cylinder rotation speed is also performed, so that a more appropriate threshing process is performed. However, while the feed chain speed control is stopped when the feed chain shift control is stopped due to the position change of the pre-mowing processing unit in the machine width direction, the feed chain speed and the handle cylinder are also stopped. It is possible to maintain the balance of the number of revolutions, and thus to further enhance the effect of the first characteristic configuration of realizing good threshing treatment and ensuring high reliability.

[0012]

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

As shown in FIGS. 2 and 5, the combine has a cutting section G vertically rocked on the front part of a machine body K including a pair of left and right crawler traveling devices 1, a threshing device 2 and a driver's seat 3. It is configured so that it can be mounted.

The reaping section G is a pre-removal processing section G1 for raising and cutting the planted culms, and a conveying device for conveying the reaped crop culms from the pre-reaping processing section G1 to the feed chain 15 for threshing. The vertical transport device 8 of FIG. The pre-cutting processing unit G1 includes a weeding tool 59 juxtaposed in the lateral direction of the machine body, a raising device 4 of the planted grain culm, a clipper-type cutting blade 5 for cutting the root of the planted grain culm that has been raised, It is equipped with an auxiliary transporting device 6 and the like that collects the harvested grain culms and transports them backward. In the figure, 59A is a weeding tool supporting frame. The root portion of the cylindrical cutting-section supporting frame 42 that connects the pre-cutting processing section G1 to the machine body K is pivotally supported by the mounting base 47 of the machine body K and is vertically swingable about the horizontal axis P. At the same time, an elevating cylinder 48 for elevating the reaper supporting frame 42 is provided.

As shown in FIG. 3, the vertical transfer device 8 has a pinching transfer device 8A for pinching and transferring the stock side of the harvested culm.
And a locking and transporting device 8B for locking and transporting the tip side of the harvested culm
And the grain culm guide plate 8C, conveys the cut grain culm from the auxiliary transporting device 6 in the vertical posture toward the rear of the machine body, and changes the posture to the horizontal posture at the transporting end portion to feed the feed chain 15 It is configured to be delivered to.
In the figure, S0 is a stock origin sensor that contacts the stock of the cut grain culm at the carrying start end portion of the vertical carrying device 8 and detects the presence or absence of the culm carried by the vertical carrying device 8. If the explanation is added, the mowing grain culm will be in contact with this stock origin sensor S0 during the mowing work, and the stock origin sensor S0 will remain ON, and when the mowing work ends, the supply of the mowing grain culm will be interrupted. Therefore, the grain culm does not contact the stock origin sensor S0, and the stock origin sensor S0 is turned off.

The supporting frame 4 at the end of the vertical transfer device 8 is also provided.
9 is pivotally supported around the same horizontal axis P as the mowing section support frame 42 so as to be vertically swingable, and a hydraulic cylinder for adjusting the handling depth is provided between the mowing section support frame 42 and the support frame 49. 43 is interposed. Therefore, the vertical transport device 8
The raising / lowering cylinder 48 raises / lowers the cutting pretreatment unit G1 integrally, and also raises / lowers independently for adjusting the handling depth. That is, when the vertical transfer device 8 swings up and down around the horizontal axis P by the hydraulic cylinder 43 for adjusting the handling depth, the support position of the harvested culm supplied from the auxiliary transfer device 6 is changed in the culm direction. Further, the position of the harvested grain culm transferred from the vertical conveying device 8 to the feed chain 15 is changed in the grain direction, and the handling depth in the threshing device 2 is changed and adjusted.

As shown in FIG. 3, the inverted U-shaped member 13 which is also used as the frame of the vertical transfer device 8 is provided with a vertical transfer device 8.
A pair of tip sensors Sa and Sb for detecting the tip positions of the conveyed grain culms are provided at intervals in the grain direction of the grain culm, and the installation points of the pair of tip sensors Sa and Sb are installed. Is set on the lower side in the grain culm conveying direction with respect to the handling depth adjusting portion, that is, the starting end of the vertical conveying device 8. Each of the pair of tip sensors Sa and Sb detects the backward swing of the sensor bar 16 which is urged to return to the lower side of conveyance and urged to return to the upper side of conveyance by contact with the grain culm. Switch use detector 17
Consists of. That is, the sensor bar 1
If 6 moves backward and swings and the detection unit 17 is turned ON, the presence of grain culm is detected, and if the detection unit 17 is OFF, the absence of grain culm is detected. Although not described in detail, a state in which only the sensor Sb on the plant side of the pair of tip sensors Sa and Sb detects the presence of grain culm is set as an appropriate handling depth state, and the appropriate handling depth state is maintained. As described above, the vertical conveyance device 8 is vertically swung around the horizontal axis P.

The position of the pre-mowing processing section G1 is freely changeable between a position on the side where the feed chain 15 is located in the lateral direction of the machine body (on the left side in the traveling direction of the machine body) and an end side position on the machine body side and a position on the center side of the machine body. (See FIGS. 5 and 6). Then, along with the position change of the pre-cutting processing unit G1 to the machine lateral side end side position and the machine body central side position, the vertical transfer device 8 causes the grain culm transfer direction to follow the machine front-rear direction. The vertical conveying device 8 is swingably connected to the support frame 49 around an axis along the longitudinal direction of the support frame 49 so that the state is changed to the state in which the state is inclined with respect to the longitudinal direction of the machine body. A locking arm 60 for locking the vertical transfer device 8 is attached to the pre-cutting processing section G1, and the vertical transfer device 8 has a connecting plate 61 provided with an elongated hole for engaging the locking arm 60. Is attached (see FIGS. 2 and 5).

A description will be given of the moving means M for changing the position of the pre-mowing processing section G1 to the lateral end portion side position of the machine body and the center side position of the machine body. As shown in FIG. On the cutting part mounting frame 42A at the tip,
A pair of front and rear long frames 58A and 58B are slidably supported in the left and right direction of the machine body.
8A, 58B, three weeding tool support frames 59A, 5
9B and 59C are attached. Although not described in detail, each of the weeding tool 59, the raising device 4, the cutting blade 5, and the auxiliary carrying device 6 has the elongated frames 58A, 58B and the weeding tool support frame 59A. , 5
While using 9B and 59C as a support part, they are attached in a predetermined posture.

Then, the electric motor 5 for adjusting the position of the mowing part
A rotary shaft 51 with a spiral groove that is normally and reversely rotated at 0 is supported by a bracket 52 attached to the elongated frames 58A and 58B, and a top member 53 fitted to the rotary shaft 51 is used for the cutting. It is fixed to the part mounting frame 42A. Then, the left slide switch SWa or the right slide switch SWb provided in the driver's seat 3 for instructing the cutting position change
When the electric motor 50 rotates in the forward direction or the reverse direction based on the operation (see FIG. 1), the lateral position of the machine body of the pre-mowing processing unit G1 can be changed. Further, in the mowing section mounting frame 42A, the mowing pretreatment section G1 is repositioned to the left slide position PL on the left side (see FIG. 6) and the right slide position PR on the right side (see FIG. 5) in the machine width direction. At this time, two limit switches, a right limit switch S1a and a left limit switch S1b for detecting the position of the reaping section, which are turned on when the locking pieces fixed to the elongated frame 58A come into contact with each other, are attached. Accordingly, the moving positions of the pre-cutting processing unit G1 at the lateral end portion side of the machine body and the center side position of the machine body are set.

As shown in FIG. 7, the threshing device 2 includes a handling cylinder 24 for handling and processing threshing culms that are sandwiched and conveyed by the feed chain 15 from the front side to the rear side of the machine body.
, A receiving chamber 43 arranged below the operating chamber A, a swing selecting plate 44 for swing-selecting the leaked material from the receiving net 43, and swing thereof. Kara 45, which blows the sorting air to the sorting board 44, the rotary diffusion drum 46 which acts on the straw discharged from the handling chamber A, and the dust generated inside the threshing device, which is sucked and discharged to the outside of the machine. A dust removal fan 7, a first screw 28 for collecting grains from the rocking sorting plate 44 as the first product, a second screw 9 for collecting grains mixed with straw as the second product, and the second And a thrower 10 for returning the second product collected by the No. screw 9 onto the swing selection plate 44. In the figure, 11 is a gren sheave arranged above the first screw 28, and 12 is a chaff sheave located above the gren sheave 11.

As shown in FIGS. 7 and 8, a rail mechanism 2 is provided on the upper part of the feed chain 15 for pressing the conveyed grain culms downward and sandwiching it with the feed chain 15.
6 is provided. That is, the plurality of pressing members 26a and 26b connected to each other by the pivot Q in the transport direction are connected to the coil spring 2.
6c is elastically urged downwardly. And
The first pressing member 26a and the second pressing member 26 from the front
In order to detect the upward displacement of the pivot axis Q with respect to b, a culm thickness sensor S8 using a potentiometer is provided.
The culm thickness sensor S8 detects the thickness of the grain culm sandwiched between the feed chain 15 and the rail mechanism 26, and the thickness of the grain culm detected by the culm thickness sensor S8 and the feed described later. Chain sensor S6 (see Fig. 9)
On the basis of the information on the feed speed of the feed chain 15 detected by the feed chain 15, since the feed amount of the threshed grain culm conveyed by the feed chain 15 is proportional to the product of both detected amounts, the culm thickness sensor S8 The feed chain sensor S6 and the feed chain sensor S6 constitute a threshed grain culm transport amount detecting means for detecting the transport amount of the threshed grain culm transported by the feed chain 15.

Next, the power transmission system of the combine will be described. As shown in FIG. 9, the driving force of the engine E is transmitted to the traveling continuously variable transmission 19 via the belt transmission, and the output of the continuously variable transmission 19 after shifting is transmitted to the mission case 18. . Then, the pair of left and right crawler traveling devices 1 are driven via the auxiliary transmission device D in the mission case 18. Although not described in detail, the auxiliary transmission device D is configured so that an auxiliary transmission lever (not shown) provided in the driver's seat 3 can change the forward rotation power for straight traveling into three stages of high, medium and low. .
Further, a mechanism for transmitting the shift output from the auxiliary transmission device D to the pair of left and right crawler traveling devices 1 will not be described in detail, but in the middle thereof, the pair of left and right crawler traveling devices 1 for turning the vehicle body. A pair of left and right traveling clutches are provided for turning on and off the power. Further, the driving force of the engine E is transmitted to the mowing section G via the one-way clutch 27 so that the mowing section G is driven only when the machine body advances after being transmitted through the belt transmission device. Is configured to drive each part of the. As a result, the vertical conveying device 8 is driven by the output of the engine E, and the grain culm conveying speed is changed and adjusted according to the engine output.

Further, as shown in FIG. 9, the driving force of the engine E operates a threshing clutch 14 for turning on and off the power transmission from the engine E to the threshing device 2 so as to drive each part of the threshing device 2. After passing through, the rotary shaft 24a of the handling cylinder 24, the rotary shaft 45a of the Karako 45, and the first screw 28
To each of the above through a belt transmission and a gear transmission. The threshing clutch 14 has a threshing switch S for detecting whether it is in the engaged state or the disengaged state.
3 is attached. The output shaft of the engine E is additionally provided with an engine speed detection sensor S4 for detecting the speed of the engine E. The driving force of the engine E transmitted to the first screw 28 is transmitted to the rotating shaft 46a of the diffusion cylinder 46, the second screw 9, and the rotating shaft 44a of the swing selection plate 44 in that order in the order of belt transmission. . Incidentally, S5 is a screw rotation speed detection sensor for detecting the rotation speed of the second screw 9.

The rotary shaft 24a of the handle cylinder 24 is belt-transmitted via a first 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. , Is driven to rotate by its driving force.
The first transmission 20 includes an input pulley 20 attached to an input shaft 20a to which the driving force of the engine E is transmitted.
b and an output pulley 20c that is transmitted to the input pulley 20b by a belt, and the output pulley 20c is the handling cylinder 2
4 is attached to the rotary shaft 24a. 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 handling cylinder is changed. The gear shift operation of the first transmission 20 is performed to change the rotation speed of 24. That is, the split pulley type first transmission device 20 functions as a rotation speed changing unit B that changes the rotation speed of the handling cylinder 24. A handling cylinder rotation speed sensor S2 for detecting the rotation speed is attached to the rotary shaft 24a of the handling cylinder 24 whose rotation speed is changed based on the shift operation of the first transmission 20.

The dust-exhausting fan 7 is rotationally driven by a driving force transmitted from the rotary shaft 46a of the diffusion cylinder 46 via a second pulley type second transmission 21 (belt continuously variable transmission). It is like this. The second transmission 21 includes an input pulley 21 attached to an input shaft 21a gear-transmitted from a rotating shaft 46a of the diffusion cylinder 46.
b and an output pulley 21c that is transmitted to the input pulley 21b by a belt, and the output pulley 21c is attached to the rotating shaft 7a of the dust-exhausting 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 second transmission device 21 is a gear type reduction mechanism 22 and a clutch 23.
Is transmitted to the drive sprocket 15a of the feed chain 15 via the second transmission 2
When 1 is operated, the dust-exhausting fan 7 and the feed chain 15 are geared together. That is, the split pulley type second transmission device 21 functions as a transmission device F that changes the transport speed of the feed chain 15. The drive sprocket 15a of the feed chain 15 whose transport speed is changed based on the speed change operation of the second transmission 21 is provided with a feed chain sensor S6 for detecting the number of rotations thereof in order to obtain the transport speed of the feed chain 15. It is attached.

As shown in FIG. 1, a control device 100 utilizing a microcomputer is provided, and the control device 100 is provided.
In addition, the stock sensor S0, the right limit switch S1a and the left limit switch S1b for detecting the cutting portion position, the handling cylinder rotation speed sensor S2, the threshing switch S3, the engine rotation speed detection sensor S4, the screw rotation speed detection. Sensor S5, feed chain sensor S6, left slide switch SWa and right slide switch S
Each signal from Wb, the culm thickness sensor S8, and the pair of tip sensors Sa and Sb is input, and the control device 100 causes the first and second transmission devices 20 and 2 to operate.
1, drive signals for the electric motor 50 for adjusting the position of the mowing section and the alarm device 25 are output. The alarm device 25 includes a buzzer and a flashing lamp provided in the driver's seat 3.

Then, using the control device 100,
As shown in FIGS. 10 (a) and 10 (b), based on the information of the threshed culm culm transport amount detection means, that is, the feed chain sensor S6 and the culm thickness sensor S8, the handling amount of the threshed culm culm increases as the threshed grain culm transport amount increases. The operation of the first transmission 20 is controlled so as to increase the rotational speed of the second transmission 21, and the operation of the second transmission 21 is performed so that the transport speed of the feed chain 15 increases as the transport amount of threshed culms increases. Means C for controlling
And the control means C is based on the information of the threshed grain culm transport amount detection means S6, S8 only when the grain culm transport direction of the vertical transport device 8 is in a state along the machine front-back direction. It is configured to execute change control of the rotation speed of the handling cylinder 24 and speed change control of the transport speed of the feed chain 15 based on the information of the threshed grain culm transport amount detection means S6, S8.

Since the first transmission 20 and the second transmission 21 are both belt continuously variable transmissions as described above, the shifting operation is performed by the pulleys 20b, 2b.
It is necessary to start up under the condition that 0c and 21b, 21c are rotating respectively. Therefore, the control device 10
Regarding the first transmission 20, 0 means that the threshing switch S3 is in the ON state and the rotation speed of the engine E detected by the engine rotation speed detection sensor S4 is equal to or higher than a certain value. Further, in the second transmission 21, the gear shifting operation is performed under the condition that the rotation speed of the second screw 9 detected by the screw rotation speed detection sensor S5 is equal to or higher than a certain value. .

Next, the control operation of the control device 100 will be described with reference to the flow chart shown in FIG. It should be noted that this control operation is executed by interrupt processing at predetermined time intervals. When the control is activated, first, the left slide switch SWa or the right slide switch S
When the operating state of Wb is detected and any one of them is operated, the electric motor 50 is driven based on the instruction information to move the pre-mowing processing unit G1 to the left or right slide position in the lateral direction of the machine body. To move. Next, when it is confirmed that the threshing switch S3 and the stock origin sensor S0 are both in the ON state and the cutting operation is performed, the cutting pretreatment unit G1 is further provided on the side where the feed chain 15 is located. Whether or not it is located at the side end portion side of the machine body is confirmed by the right limit switch S1a being in the ON state and the left limit switch S1b being in the OFF state. Then, when this condition is satisfied (left slide position), in order to maintain the handling cylinder rotation speed and the feed chain speed at the proper rotation speed and the proper speed according to the threshed grain culm conveyance amount, respectively. Shift control of the first transmission 20 and the second transmission 21 is performed (see FIG. 1).
0). On the other hand, when the above condition is not satisfied (right slide position), the handling cylinder rotation speed and the feed chain speed are maintained at the intermediate position of each change range, that is, the medium speed state.

[Other Embodiment] In the above embodiment, as the rotation speed changing means B and the speed changing means F, a split pulley type speed change device 2 is used.
An example in which 0 and 21 are adopted is shown, but other than this, for example, a gear type transmission can be adopted. When a gear type transmission is adopted, the rotation speed of the handling cylinder 24 and the speed of the feed chain 15 may be changed in multiple steps instead of stepless.

Further, in the above embodiment, the threshing grain culm conveying amount detecting means S6, S8 for detecting the conveying amount of the threshing grain culm conveyed by the threshing feed chain 15 are provided with the speed information and the culm thickness sensor by the feed chain sensor S6. Although the example of what is obtained based on the information on the thickness of the grain culm in S8 is illustrated, the invention is not limited to this.

Further, in the above embodiment, the speed of the feed chain 15 and the number of rotations of the handling cylinder 24 increase as the amount of threshed grain culm conveyed increases only when the grain culm conveying direction of the conveying device 8 is along the machine longitudinal direction. Although the example in which the shift control is performed so as to be large is illustrated, it is not necessary to configure the shift control of the handling cylinder rotation speed so that the shift control is prohibited depending on the grain culm transport direction of the transport device 8. For example, as for the control of changing the number of rotations of the handling cylinder, the change control may be always performed according to the amount of threshed grain culm conveyed regardless of the grain culm conveying direction of the conveying device 8. Further, as another configuration, the feed chain speed alone may be changed and controlled as described above under a constant handling cylinder rotation speed without performing shift control on the handling cylinder rotation speed.

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 of a control configuration.

FIG. 2 is a side view of the front part of the combine.

FIG. 3 is a front view of a transfer device.

FIG. 4 is a plan view of a position changing mechanism of a pre-mowing processing unit.

FIG. 5 is a plan view of the combine.

FIG. 6 is a plan view of the combine in the left slide position.

FIG. 7 is a schematic vertical sectional side view of a threshing device.

FIG. 8 is a side view of the threshed grain culm transport amount detecting means.

FIG. 9 is an explanatory view showing a combine power transmission system.

FIG. 10 is a graph showing the relationship among the amount of threshed culm transported, the number of rotations of the handling cylinder and the feed chain speed

FIG. 11 is a flowchart of control operation.

[Explanation of symbols]

 15 Threshing feed chain S6, S8 Threshing grain culm conveying amount detecting means F Speed changing means C Control means G1 Mowing pretreatment section 8 Conveying device 24 Handling cylinder B Rotation speed changing means

Claims (2)

[Claims] 1. A threshing grain culm conveying amount detecting means (S6, S8) for detecting the conveying amount of the threshing grain culm conveyed by the threshing feed chain (15), and the feed chain (1).
5) Based on the information of the speed changing means (F) for changing the conveying speed and the threshed culm conveying amount detecting means (S6, S8),
The larger the amount of threshed culm transported, the more the feed chain (1
A threshing control device for a combine, which is provided with a control means (C) for controlling the operation of the speed change means (F) so that the conveyance speed of 5) becomes high, before harvesting by cutting and raising a grain culm. The processing section (G1) is provided so as to be positionally changeable between the lateral side end portion side of the side where the feed chain (15) is located and the lateral side of the vehicle body in the lateral direction of the vehicle body, and the pre-reaping processing section ( G1)
The transfer device (8) for transferring the harvested culm from the to the feed chain (15) is used to change the position of the pre-cutting processing section (G1) to the lateral side end side position of the machine body and the central position of the machine body. Accordingly, the grain culm conveying direction is provided so as to be changed to a state of being along the machine longitudinal direction and a state of being oriented obliquely with respect to the machine longitudinal direction. ) Is configured to execute the shift control of the feed chain transport speed based on the information of the threshed grain culm transport amount detection means (S6, S8) only when the grain culm transport direction is along the machine longitudinal direction. Threshing control device for combine harvesters. 2. The threshing control device for a combine according to claim 1, further comprising a rotation speed changing means (B) for changing a rotation speed of the handling cylinder (24), wherein the control means (C) comprises: Only when the grain culm transport direction of the transport device (8) is along the machine front-rear direction, the larger the grain culm culm transport amount is, the larger the grain culm culm transport amount is based on the information of the threshed grain culm transport amount detection means (S6, S8). A combine threshing control device configured to control the operation of the rotation speed changing means (B) so that the rotation speed of the handling cylinder (24) becomes large.