JPH099753A - Combine harvester - Google Patents

Abstract

PURPOSE: To provide a combine harvester capable of easily preventing a collision against a levee, etc., and excellent in operability and threshing accuracy by placing an automatic lifting means for lifting a pretreating part to automatically lift the pretreating part to a high cutting position by the on-operation of a whole calm charge-controlling switch, etc. CONSTITUTION: This combine harvester is provided with a treating depth- controlling means, a whole calm charge-controlling means and an automatic lifting means for lifting a pretreating part. The treating depth-controlling means adjusts a moving position of an intermediate transportation apparatus so that the ear tip of a calm comes between an ear tip-side sensor 60 and a calm foot- side sensor 61. The whole calm charge-controlling means places the whole of the calm to a treating section, which is sent to the terminal position of the intermediate transportation apparatus by moving the intermediate transportation apparatus beyond the deep treating-side limit of a treating depth control and to the position where the calm is not transferred to a threshing transferring apparatus. The automatic lifting means for lifting the pretreating part lifts the pretreating part up to a high cutting position automatically by the on- operation of a whole calm charge-controlling switch 50.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a combine for throwing all highly cut short culms into a handling room.

[0002]

BACKGROUND OF THE INVENTION Generally,
With this type of combine, when attempting to mow the stem culm on the edge of the ridge with the body posture facing the ridge, due to the structure of the pretreatment section (the structure in which the divider projects in front of the cutting blade), it is inevitable Since it is in a mowing state, there is an inconvenience that the high-cut short culm is shredded at the threshing part and left unprocessed. Therefore, conventionally, the corner of the field accompanied by high-cutting is hand-cut in advance. Was the actual situation. Therefore, the stem culms to be transferred from the pre-treatment transfer device to the threshing transfer device (through feed chain) are not transferred to the threshing transfer device, but all culms are thrown into the handling room to perform threshing processing by the so-called thresher system. Therefore, it is proposed that high cutting is enabled, and that hand cutting work is unnecessary by performing cutting according to the procedure shown in FIG. 13 (hatching is a high cutting part).
However, in such a case, when all culm insertion is executed, it is necessary to manually raise the pretreatment section to the high cutting position before turning on the all culm insertion control switch, which complicates the operation. In addition, since the amount of rise of the pretreatment section inevitably varies in the manual raising operation, there is a possibility that long culms are all introduced to reduce threshing accuracy.

[0003]

SUMMARY OF THE INVENTION The present invention has been devised in view of the above circumstances to provide a combine capable of solving these problems. A pretreatment conveying device for sandwiching and transporting the stalks cut by the processing section, an intermediate transporting device for sandwiching and transporting the stalks transported to the terminal end of the pretreatment transporting device toward the threshing part, and the intermediate transporting device And a threshing transfer device for sandwiching and transferring the stalks transferred to the terminal end of the transfer chamber, and the intermediate transfer device is configured to be rotatable around the transfer start end side or the transfer end side as a fulcrum, It is a combine in which the handling depth is adjusted based on a change in the stem-culm holding position of the threshing conveying device accompanying rotation, in which the tip of the stem is located between the tip-side sensor and the stock-side sensor. Rotation of the intermediate transfer device to position And a handling depth control means for controlling the setting, and the intermediate transport device is rotated to a position beyond the deep handling side limit position of the handling depth control and where the stems are not transferred to the threshing transport device, All culm throwing control means for throwing all the culms transferred to the end part of the culm into the handling room, and automatic pretreatment for automatically raising the pretreatment unit to the high cutting position based on the ON operation of the all culm throwing control switch It is characterized in that ascending means is provided. And the present invention, by this configuration, when performing the all culm throwing control to throw all the high culled short culms into the threshing part, improve the operability by eliminating the manual raising operation of the pretreatment part, and The processing section is raised to an appropriate height to improve the threshing accuracy when all culms are charged.

[0004]

Next, an embodiment of the present invention will be described with reference to the drawings. In the drawings, reference numeral 1 denotes a combine traveling machine, and the traveling machine 1 includes a pretreatment unit 2 for cutting stem culms, a threshing unit 3 for threshing grains from the cut stems, and a threshed grain. A sorting unit 4 for sorting rice, a post-processing unit 5 for discharging threshed culms, an operating unit 6 in which various operating tools are arranged, a crawler type traveling unit 7 and the like are provided, and the basic configurations thereof are provided. Are conventional.

The pretreatment unit 2 divides the stems into a number of cutting lines, a divider 8, a raising device 9 for raising the stems, a cutting blade 10 for cutting the roots of the raised stems, A star wheel 11 for scraping the root part of the stalks above the cutting blade 10, a scraping device 12 for scraping the middle part of the stalks above the star wheel 11, and scrapes from each scraping path A pair of left and right stock-source transporting devices (pre-treatment transporting devices) 13 and 13a and a tip transporting device 14 for merging the stems at the transporting end portion, while transforming the merged vertical stems into a horizontal posture, The pre-processing unit 2 includes a lift cylinder 17 although it is configured by an intermediate transfer device 16 or the like that transfers it toward the threshing transfer device 15.
The cutting height of the stalks can be freely adjusted based on the operation of the lift cylinder 17, because the cutting machine is connected to the front end of the machine body so as to move up and down with the expansion and contraction operation.

The intermediate transfer device 16 is constructed as a unit by arranging a stock feed chain 18 for sandwiching and carrying the stock side of the stem and a head carrier 19 for sending and carrying the head side of the shoot. However, the unitized intermediate transfer device 16 is supported so as to be vertically rotatable around the transfer end side as a fulcrum, and is forcibly rotated based on the drive of the handling depth motor 20. It is like this. That is, when the intermediate transfer device 16 holds the stem culm transferred to the terminal end of the stock source transfer device 13, the holding position is
Since it can be moved up and down based on the vertical rotation with the transport end side as a fulcrum, the stem-culm holding position of the threshing transport device 15 that inherits the stems at the terminal end of the intermediate transport device 16 is changed to change the threshing unit 3 You can adjust the handling depth in the.

By the way, in the adjustment of the handling depth, the distance L1 between the stem basin position of the stem culm and the stem culm sandwiching position of the strain basin feed chain 18 is determined by the end portion of the stock source food chain 18 and the threshing and conveying device 15. The intermediate transfer device 16 is rotated up and down in a range that is larger than the distance L2 from the start end, that is, in a range in which the threshing transfer device 15 can inherit the stems, but the intermediate transfer device 16 of the present invention is It is configured so that it can be lowered to a position beyond the deep handling side limit of the handling depth adjustment range, and the planter side of the culm can be clamped further than when the handling depth is adjusted. That is, at this rotating position, the interval L1 is smaller than the interval L2, and therefore the intermediate transfer device 1
The stem culms transported to the end portion of 6 can be introduced into the handling chamber 21 of the threshing unit 3 without transferring them to the threshing transport device 15.

In order to make the intermediate transfer device 16 rotatable to the all-culm insertion position, the stock source feed chain 1
In order to avoid the start end of 8 from interfering with the end of the stock carrier 13, the end of the stock carrier 13 and the start of the stock feed chain 18 are separated by a predetermined distance L3 in the stalk transfer direction. However, at the position below the end of the stock carrier device 13 (in this embodiment, the height is set within a range L4 that is higher than the cutting blade 10 and lower than the star wheel 11), As described above, the stock feed device 13 and the auxiliary feed chain 22 that overlaps the stalk transfer range of the stock feed chain 18 are juxtaposed so as to be connected to the stock feed chain 18 in a substantially straight line in a plan view. Therefore, even if the stock-source transport device 13 and the stock-source feed chain 18 are separated from each other in the stem-culm transport direction, the stock-source transport device 13 and the stock-source feed chain 18 can be reliably transferred. It has become.

By the way, the auxiliary feed chain 22
Is supported by a pair of front and rear sprockets 23, and the starting end side sprocket 23 is the stock carrier device 1.
3 is disposed in the vicinity of the lower end of the sprocket 24 on the terminal side for suspending and supporting the terminal end of No. 3, so that the starting end of the auxiliary feed chain 22 is connected to the terminal end of the stock conveyor device 13 where the scraped culm is merged. Parts are located. That is, at this position, the merging of the stem culms scraped from the respective scraping paths and the continuous feeding of the merged stem culms to the auxiliary feed chain 22 are performed substantially at the same time. In the present embodiment, both sprockets 23 arranged in a superposed manner as described above,
Since 24 is integrally interlocked and coupled via the transmission shaft 25, both devices 13, 22 are connected based on the driving force of either one (driving force of the stock carrier device 13 side or the auxiliary feed chain 22 side). It can be driven.

On the other hand, 26 is a guide plate projectingly provided on the front surface of the handling chamber 21. The guide plate 26 receives from below the stalks conveyed to the end of the intermediate conveying device 16, and The stem culm is introduced and guided up to the stalk culm supply port 21a of the handling chamber 21. The start end side of the guide plate 26 is close to the end part of the intermediate transfer device 16, while the end side is the stalk culm supply port 21a. Is curved so as to follow the lower edge thereof, and is further formed so as to incline in a front high rear low shape as a whole.

Reference numeral 27 denotes a stock-source-side auxiliary transfer device disposed above the stock plate side of the guide plate 26. The stock-source-side auxiliary transfer device 27 has a claw-shaped transfer having a transfer claw 27a made of resin. The chain is configured to be suspended on a pair of front and rear sprockets (not shown). And this is the guide plate 2
The stem base of the stem culm placed on 6 is forcibly conveyed toward the stem culm supply port 21a, while the starting end of the plant side auxiliary transfer device 27 is close to the end of the intermediate transfer device 16. The terminal portion is located near the stem-culm supply port 21a, and as a whole, is inclined in a direction away from the threshing and conveying device 15 toward the lower side of conveyance. That is, it is possible to inherit the stem base of the stem culm that has been conveyed to the end of the intermediate conveying device 16 as it is, and convey the inherited stem culm to the handling chamber 21 while separating it from the threshing conveying device 15. It is like this.

Reference numeral 28 denotes a tip end side auxiliary transfer device disposed above the tip end side of the guide plate 26. The tip end side auxiliary transfer device 28 has a plurality of blade portions 28a, and a beater shaft 28b oriented in the left-right direction. It is configured by arranging radially. And this thing compulsorily conveys the tip side of the stem culm on the guide plate 26 toward the stem culm supply port 21a, but the height of the beater shaft 28b is the upper end height of the stem culm supply port 21a. The beater shaft 2
8b and the guide plate 26, while ensuring a necessary transfer space, the transfer action range of the blade portion 28a is as much as possible.
You can get closer to 9. By the way,
If the height of the beater shaft 28b is set higher than the height of the upper end of the stem-culm supply port 21a, it is necessary to keep the beater shaft 28b away from the handling barrel 29 in consideration of the turning radius of the blade portion 28a. When the height of 28b is set to be lower than the height of the upper end of the stem-culm supply port 21a, the conveying action range of the blade portion 28a can be brought close to the handling cylinder 29, but between the beater shaft 28b and the guide plate 26. The inconvenience of not being able to secure the necessary transport space is created.

The vane portion 28a is formed of an elastic body, and has a tip shape set to follow the guide surface shape of the guide plate 26. Therefore, it is possible to reduce the grain shedding on the guide plate 26 by buffering the pressing force of the blade portion 28a received by the stalk, and at the same time, the grain shattered on the guide plate 26 and the grain scattered from the handling chamber 21. Grains can also be thrown into the handling chamber 21 together with the stalks. In this embodiment, the tip of the blade 28a is elastically deformed so that the tip of the blade 28a comes into contact with the guide surface of the guide plate 26a. Since the length dimension is set, the grains on the guide plate 26 can be efficiently put into the handling chamber 21.

On the other hand, 30 is a transmission shaft which is disposed in the front position of the handling chamber 21 in the left-right direction.
One end of 0 is interlockingly connected to a sprocket shaft 31 (driving sprocket shaft or driven sprocket shaft) that constitutes the threshing conveyance device 15 via a universal joint 31 and a connecting shaft 32, while the other end of the transmission shaft 30. The section is interlocked with the stocker side auxiliary carrier device 27 and the tip side auxiliary carrier device 28 via a transmission mechanism described later. That is, the stock source side auxiliary transfer device 27 and the tip side auxiliary transfer device 28
Is operated by the power taken out from the threshing transfer device 15, these transfer devices 15, 27, 28 are always linked. Therefore, the stock-side auxiliary carrier 27 and the tip side auxiliary carrier 28 operate together with the threshing carrier 15 even during normal work or manual work, and as a result, the stock grows during normal work or manual work. Former side auxiliary transport device 27
In addition to avoiding the inconvenience of stopping the tip side auxiliary transporting device 28 and disturbing the insertion of the stalks, it also acts to assist the insertion of the stalks during the manual operation to improve the workability of the manual operation. You can do it.

By the way, in this embodiment, the transmission shaft 30 is
When disposing the connecting shaft 32 at the front position of the handling chamber 21, the shafts 30 and 32 are arranged along the lower surface of the guide plate 26. In other words, since the transmission shaft 30 and the connecting shaft 32 can be protected by using the guide plate 26, it is possible to avoid the debris generated in the process of transporting the stalks from adhering to the transmission shaft 30 and the connecting shaft 32. Since a dedicated cover member is not required, it is possible to simplify the structure and reduce the cost.

Further, 33 is a transmission case which is also used as a tip guide plate, and the transmission case 33 supports the beater shaft 28b of the tip side auxiliary transfer device 28 in a cantilever manner. The beater shaft 28 protruding from the transmission case 33
The end portion of b is connected to the transmission shaft 3 via the belt transmission mechanism 34.
By interlocking with the other end of 0, the tip side auxiliary transport device 28 is interlocked with the threshing transport device 15,
In this embodiment, with respect to the tip guide surface of the transmission case 33,
Since the tip end side end of the tip end side auxiliary transfer device 28 is brought into contact with or brought close to the tip end side auxiliary transfer device 28, the winding of the stem culm at the base portion of the beater shaft 28b can be regulated.

Further, 35 is the stock carrier side auxiliary transfer device 2
7 is a drive shaft for transmitting a drive force, one end of the drive shaft 35 is supported by a bearing 36 provided on the front surface of the handling chamber 21, while the other end is supported by the transmission case 33. ing. Then, one end of the drive shaft 35 is connected to the universal joint 37.
By interlockingly connecting to the input shaft 39 of the stock side auxiliary carrier 27 via the connection shaft 38 and the other end of the drive shaft 35 to the beater shaft 28b via the chain transmission mechanism 40, The power extracted from the threshing transfer device 15 is transmitted to the stocker side auxiliary transfer device 27. However, in this embodiment, since the drive shaft 35 is arranged above the tip side auxiliary transfer device 28, the drive shaft 35 can be freely moved. The power transmission path composed of the joint 37 and the connecting shaft 38 is separated from the stalk-conveying path as much as possible to effectively prevent the stalk from being wound around the drive shaft 35 and the like.

By the way, the operating speed of the stock side auxiliary transfer device 27 is set based on the transmission ratio of the belt transmission mechanism 34, the chain transmission mechanism 40, etc. described above. The operating speed Va of 27 is set higher than the transport speed Vb of the threshing transport device 15 so that the component speed in the transport direction B (the transport direction of the threshing transport device 15) substantially matches the transport speed Vb of the threshing transport device 15. Therefore, specifically, the following relational expression holds. However, θ is an angle formed by the transport direction A of the stock side auxiliary transport device 27 and the transport direction B of the threshing transport device 15. Va = Vb / cos θ That is, while the stock-side auxiliary transfer device 27 is arranged so as to be inclined with respect to the threshing transfer device 15, at the time of normal work of transferring the stems by the threshing transfer device 15, The stem culm plant side can be assisted to be transported without disturbing the transportation.

On the other hand, the threshing conveying device 15 has a threshing feed chain 43 suspended by a drive sprocket 41 and a driven sprocket 42, and the threshing feed chain 43.
It is configured to sandwich and convey the stem culm stock with the pinching rail 44 that is urged toward, and the pinching rail 44 is based on the drive of the rail lifting cylinder 45. A rail elevating mechanism 46 that elevates and lowers the pinching rail 44 is connected. The rail elevating mechanism 46 automatically raises during high mowing work (when all culms are thrown in) to eliminate the clamping force of the pinching rails 44, so that the highly trimmed stalks are transferred to the provisional threshing feed chain 43. Even if the stems are transported, all the stems can be put into the handling chamber 21 based on the pulling action of the handling barrel 29.

The handling cylinder 29 is formed by arranging a plurality of handling teeth 29a on the outer peripheral surface of a cylindrical member. The handling cylinder 29 of this embodiment has a spiral on the outer peripheral surface on the starting end side. Tooth 29
b. The spiral tooth 29b is the handle tooth 2
9a is exerted to draw in the stalks smoothly and smoothly, and the stalks introduced into the whole culm are quickly transferred rearward to prevent clogging of the stalks.

The operation section 6 is provided with a front operation panel 47 located in front of the driver's seat 6a and a side operation panel 48 located beside the driver's seat 6a. Reference numeral 47 denotes a multi-steering lever 49 capable of raising and lowering the pre-processing unit 2 (front-back direction) and steering operation of the traveling unit 7 (horizontal direction), and all culm insertion control provided at the upper end of the multi-steering lever 49. An operation tool such as a switch 50 and a handling depth control switch 51 for turning the handling depth control on and off is provided, while a side shift lever 52 for shifting traveling power and the like is provided on the side operation panel 48, A threshing clutch lever 53 for connecting and disconnecting the power of the threshing unit 3 (including the selecting unit 4), a cutting clutch lever 54 for connecting and disconnecting the mowing power (power of the pretreatment unit 2), and the like are provided. And that although, the shift lever 52
Is based on the drive of the shift motor 55.
The automatic speed change mechanism that automatically operates is connected.

Further, 56 is a microcomputer (C
(Including PU, ROM, RAM, etc.), and the control unit 56 includes the all-culm insertion control switch 50, the handling depth control switch 51, and the elevation position of the preprocessing unit 2 described above. Pretreatment potentiometer 57 for detecting
A handling depth potentiometer 58 for detecting the rotational position of the intermediate transfer device 16, a main sensor 59 for detecting the presence or absence of a transfer stalk in the intermediate transfer device 16, and a culm length sensor for detecting the culm length of the transfer stalk in the intermediate transfer device 16 ( The tip side sensor 60 and the stock side sensor 61) arranged side by side at a predetermined interval in the culm length direction, the pretreatment raising switch 62 and the pretreatment lowering switch 63 for detecting the pretreatment raising / lowering operation of the multi-steering lever 49, the gear shifting A lever potentiometer 64 for detecting the position of the lever 52, a threshing clutch switch 65 for detecting an intermittent operation of the threshing clutch lever 53,
While the signals are input from the cutting clutch switch 66 or the like which detects the intermittent operation of the cutting clutch lever 54, the operation of the handling depth motor 20, the speed change motor 55, and the pretreatment lift cylinder 17 described above is determined based on these input signals. Solenoid valves 67a, 67 for switching up and down
b, an operation signal is output to the ascending / descending electromagnetic valves 68a, 68b for switching the operation of the rail elevating cylinder 45. That is, the control unit 56 controls the depth of control for controlling the rotational position of the intermediate transfer device 16 based on the detection signals of the tip side sensor 60 and the stock side sensor 61, and the high-cut short culm to the handling room 21. It is provided with a control procedure such as all-cullet feeding control for controlling the rotational position of the intermediate transfer device 16 so as to feed all the culms, and these controls will be sequentially described below.

In the handling depth control, after confirming that the set value of all culm throwing flags described later is "0", it is judged whether the handling depth control switch 51 is ON or OFF.
If this determination is OFF, the handling depth operation of the intermediate conveying device 16 (drive of the handling depth motor 20) is stopped to return to the main routine, while if it is ON, the harvesting clutch switch is used. The ON / OFF of 66 and the main sensor 59 is judged, but only when both judgments are ON, the following handling depth adjustment routine is executed, and when either is OFF, the handling depth operation is stopped. Then, it returns to the main routine. Then, in the handling depth adjustment routine, the stocker side sensor 61 and the tip side sensor 6
0 is judged to be ON-OFF, but when both sensors 61 and 60 are ON, it is judged to be a deep handling state and the intermediate conveying device 16 is intermittently operated (inching) to the shallow handling side (raised). While the handling depth motor 20 is operated at a low speed based on the signal, while both sensors 61, 60 are OFF, it is determined that the handling state is shallow, and the intermediate conveyance device 16 is moved to the deep handling side (lowering). ) Intermittently, and the stock side sensor 61 is ON
If the tip side sensor 61 is OFF, it is determined that the handling depth is appropriate, and the handling depth operation of the intermediate conveyance device 16 is stopped. That is, the tip position of the transport culm in the intermediate transport device 16 is set to the both sensors 6
Although the handling depth is adjusted to be constant by positioning it between positions 1 and 60, when the intermediate conveyance device 16 reaches the shallow handling side limit position or the deep handling side limit position of the handling depth adjustment range, The handling depth operation is stopped based on the determination based on the detection signal of the handling depth potentiometer 58.

On the other hand, in the all culm throwing control, after confirming that the cutting clutch switch 66 is turned on, the set value of the all culm throwing flag (0 = handle depth adjusting operating state, 1 = all culm throwing operating state, 2 = When the set value is "0", the O of all culm closing control switches 50 is judged.
Judge N-OFF. If the determination is ON, the timer T1 starts counting the time, and the current rotation position A (handling depth adjustment position) of the intermediate conveyance device 16 is stored, and then "1" is set in the all culm insertion flag. ", And after that,
The amount of rise H1 of the pretreatment unit 2 is determined based on the rotation position A. That is, as described later, when the pretreatment unit 2 is automatically raised to the high cutting position based on the ON operation of the all-culm insertion control switch 50, the amount of rise H1 is controlled according to the length of the stalk. Since the position is determined with reference to the position of the intermediate transfer device 16, the pretreatment unit 2 can be automatically raised to an appropriate height according to the length of the stem.

After the amount of increase H1 is determined, the gear shift lever 52 is automatically shifted to the deceleration side on the basis of the drive of the gear shift motor 55, and the traveling speed is automatically reduced to a proper cutting speed. , The intermediate transfer device 16 is operated to the deepest handling side position in order to carry out all the culm feeding described above, and then the pretreatment unit 2 is automatically raised with the amount of rise H1 set as a target. Steering lever 49
The presence / absence of the pretreatment raising operation is determined. When the determination is YES, the manual raising flag is set to "1", the automatic raising process is skipped based on this flag setting, and the manual raising operation is prioritized. That is, even during the automatic raising, the operator can manually raise the pretreatment unit 2 in accordance with the field conditions, so that collision with the ridges of the pretreatment unit 2 can be avoided by an easy operation. Is able to.

Further, when the completion of the automatic ascent is judged based on the end of the time measurement of the timer T1, it is judged whether the stock-side sensor 61 used for adjusting the handling depth is ON or OFF, and the stock-side sensor 61 is turned ON. In this case, the pretreatment unit 2 is further raised until the stock-side sensor 61 is turned off. That is, when the length of the cut stalks does not reach the length suitable for introducing all culms even though the pretreatment unit 2 is raised by the predetermined amount H1, this is used by the stock side sensor 61. In addition to the above, the pretreatment unit 2 continues to be automatically raised, so that it is possible to reduce the possibility that a long culm is put into the whole culm.

Then, when the stock-side sensor 61 is turned off, the automatic raising of the pretreatment section 2 is terminated and the pinching rail 44 is automatically raised based on the driving of the rail raising / lowering cylinder 45. In the embodiment, the stock side sensor 6
The timer T2 starts timing based on the switching of 1 from ON to OFF, and when the timing ends, the pinching rail 44
It is designed to perform an automatic ascent. That is, the transport stems from the detection position of the stock-side sensor 61 from the threshing transport device 1
In consideration of the time lag until the conveyance start end position of No. 5 is reached, the rise of the pinching rail 44 is delayed by using the timer T2 corresponding to the time lag. Therefore, the conveyance stem before the high cutting It is possible to eliminate the inconvenience that all the culms are thrown in.

Further, in the all-cutter input state, the multi-steering lever 49 is pressed while pressing the all-cutter input control switch 50.
Is always judged whether or not the lowering operation has been performed, and this judgment is
When the result is S, it is determined that the operation is a high-cutting end operation, and "2" is set to the all culm throwing flag, and the manual raising flag is reset. And
In the state where "2" is set in the all culm throwing flag, the intermediate transfer device 16 is continuously operated to the shallow handling side until the detection value of the handling depth potentiometer 58 matches the stored value A, and the stock side is operated. After confirming that the sensor 61 is ON, the all culm insertion flag is reset and the pinching rail 44 is automatically lowered. In the present embodiment, the timer T2 is set based on the switch of the stock side sensor 61 from OFF to ON. Starts the timing of
The automatic lowering of the pinching rails 44 is executed at the time when the timing is completed. That is, considering the time lag from the detection position of the stock stem side sensor 61 to the transport start end position of the threshing transport device 15, the lowering of the pinching rail 44 is performed using the timer T2 corresponding to the time lag. The delay is made so that it is possible to eliminate the problem that the short culm that has been highly mowed is transferred to the threshing and conveying device 15 and becomes a shallow handle.

In the embodiment of the present invention constructed as described above, the high-cut culm is put into the handling room 21 without being transferred to the threshing transfer device 15, but the pretreatment section 2 is Based on the ON operation of the all culm throw-in control switch 50, it automatically rises to the high cutting position. Therefore, prior to the ON operation of the all culm injection control switch 50,
It is not necessary to manually raise the pretreatment unit 2 to the high-cutting position, and as a result, it is possible to improve the operability at the time of putting all the culms.

Moreover, when the pretreatment section 2 is automatically raised, the amount of rise does not vary as in the case of manually raising it, so that the length of stem culms to be put into all culms is as long as possible. The advantage is that it can contribute to the improvement of threshing accuracy.

Further, when the pretreatment unit 2 is automatically raised, the amount of rise H1 is determined on the basis of the rotational position of the intermediate conveying device 16 at the start of the all culm feeding control.
The pretreatment unit 2 can be automatically raised to an appropriate height according to the length of the stalks, and as a result, the stalks for cutting are too short to be transported, or the stalks for cutting are too long for the threshing unit 3 It is possible to eliminate the inconvenience such as the increase of the processing load.

If the stock-side sensor 61 is ON when the pre-processing section 2 is automatically raised by a predetermined amount, the pre-processing section 2 is further raised until the stock-side sensor 61 is turned OFF. It is possible to reduce the possibility of throwing long culms into all culms and reduce the processing load on the threshing unit 3.

When the pre-treatment raising operation by the multi-steering lever 49 is judged during the automatic raising, the manual raising is canceled and the manual raising operation is prioritized. It is possible to manually raise the pretreatment unit 2 according to the conditions, and as a result,
It is possible to avoid a collision with the ridges of the pretreatment unit 2 by an easy operation.

Further, in automatically raising and lowering the pinch rails 44 based on the ON-OFF operation of the all-cule feeding control,
Considering the time lag from the detection position of the stock stem side sensor 61 to the transfer start end position of the threshing transfer device 15, the automatic raising / lowering of the pinching rail 44 is delayed using the timer T2 corresponding to the time lag. Since this is done, it is possible to eliminate the inconvenience that the transported culms before the high-cutting are all thrown into the culm and the short-cutted culms that have been high-cut are transferred to the threshing-transporting device 15 for shallow handling.

At the end of loading all the culms, the intermediate transfer device 1
When automatically returning 6 to the turning position at the time of the start of high-cutting, the returning operation is performed by the all-culm insertion control switch 50.
Since this is executed by lowering the multi-steering lever 49 while pressing, the return operation becomes easy and a quick return operation becomes possible. That is,
Since the all-culm insertion control switch 50 is provided at the upper end of the multi-steering lever 49, it can be easily and quickly returned to the original position with one hand, and the threshing accuracy can be improved based on the quick return of the intermediate transfer device 16. It can be measured.

[0036]

In summary, since the present invention is constructed as described above, all the culms are thrown into the handling room by the so-called threshing method without transferring the highly trimmed stem culms to the threshing conveyor. However, in order to automatically raise the pretreatment section to the high cutting position based on the ON operation of the all culm throwing control switch, as in the conventional case, before the ON operation of the all culm throwing control switch, It is not necessary to manually raise the processing unit to the high cutting position, and as a result, it is possible to improve the operability at the time of throwing all the culms. Moreover, since there is no variation in the amount of rise of the pretreatment section as in the case of raising manually, it is possible to improve the threshing accuracy by aligning the length of the stem culms that are put into all culms as much as possible. it can.

When the pretreatment unit is raised by a predetermined amount, the amount of rise is determined based on the position of the intermediate conveyance device at the start of the all-culm feeding control. Since it is possible to raise the pretreatment section to an appropriate height by referring to the position of the intermediate conveyance device whose position is controlled, the cutting stem culm can be cut like the case of cutting at the same height regardless of the original culm length. It is possible to eliminate inconveniences such as being too short to be conveyed, and the cutting stems being too long to increase the processing load of the threshing section.

If the pretreatment unit is further raised until the stock-side sensor is turned off after raising the pretreatment unit by a predetermined amount, even if the original culm length is long, Along with this, the pretreatment section rises to cut the stem culms to an appropriate length, and as a result, it is possible to further reduce the possibility that a long stem culm is thrown into the whole culm.

Further, when the pretreatment lifting operation tool is operated during the automatic raising, the automatic raising is canceled and the operation of the pretreatment lifting operation tool is prioritized. The pretreatment unit can be manually moved up and down according to the conditions, and as a result, it is possible to easily avoid collision of the pretreatment unit with the ridges.

[Brief description of drawings]

FIG. 1 is an overall perspective view of a combine.

FIG. 2 is a side view of a pretreatment unit.

FIG. 3 is a plan view of the same.

FIG. 4 is a side view of a main part showing an auxiliary feed chain.

FIG. 5 is a front view of a threshing unit.

FIG. 6 is a perspective view showing a transfer unit between the pretreatment unit and the threshing unit.

FIG. 7 is a side view showing the operation of the tip side auxiliary transport device.

FIG. 8 is a plan view showing the operation of the stock-side auxiliary transfer device.

FIG. 9 is a front view showing the positional relationship between the stock source feed chain and the threshing feed chain.

FIG. 10 is a side view of a threshing unit and a sorting unit.

FIG. 11 is a plan view of the same.

FIG. 12 is a schematic side view of a preprocessing unit showing a high cutting state.

FIG. 13 is a plan view of a field showing a mowing procedure.

FIG. 14 is a perspective view of a main part of an operation unit.

FIG. 15 is a block diagram showing input / output of a control unit.

FIG. 16 is a flowchart of handling depth control.

FIG. 17 is a flowchart of all culm feeding control.

[Explanation of symbols]

 1 Traveling Aircraft 2 Pretreatment Section 3 Threshing Section 15 Threshing Transfer Device 16 Intermediate Transfer Device 21 Handling Room 27 Stock Side Auxiliary Transfer Device 28 Tip Side Auxiliary Transfer Device 49 Multi-Steering Lever 50 All Stalk Input Control Switch 60 Ear Tip Side Sensor 61 Stock Source sensor

Claims (4)

[Claims] 1. A pretreatment transport device for sandwiching and transporting cut stalks by a pretreatment part that can be moved up and down, and a stalk culvert transported to the terminal end of the pretreatment transport device for sandwiching and transporting toward the threshing part. And an threshing transporting device for sandwiching and transporting the stem culms transported to the end portion of the intermediate transporting device along the handling chamber, and the intermediate transporting device is provided with a transporting start end side or a transporting end side. A combine which is configured to be rotatable as a fulcrum, and in which the handling depth is adjusted based on a change in the stem-culm sandwiching position of the threshing conveying device associated with the rotation, the combine comprising:
The handling depth control means for controlling the rotation position of the intermediate conveyance device so that the tip of the stem can be located between the tip side sensor and the stock side sensor, and the deep handling side limit position of the handling depth control is exceeded. Also, by rotating the intermediate transfer device to a position where the stems are not continuously transferred to the threshing transfer device, all shoot insertion control means for inserting all shoots transferred to the end portion of the intermediate transfer device into the handling room, A combine characterized in that it is provided with a pretreatment automatic raising means for automatically raising the pretreatment section to a high cutting position based on an ON operation of the culm control switch. 2. The pretreatment automatic raising means according to claim 1, wherein the predetermined amount raising means for raising the pretreatment portion by a predetermined amount, and the raising amount by the means are based on the position of the intermediate conveying device at the start of the all-cule feeding control. And a rise amount determining means for determining the rise amount. 3. The pretreatment automatic raising means according to claim 1, wherein the pretreatment automatic raising means raises the pretreatment portion by a predetermined amount, and if the stockholder side sensor is ON at the stage of raising the predetermined amount, the stockholder side sensor. And a rise amount correction means for further raising the pre-processing unit until is turned off. 4. The pretreatment automatic raising means according to claim 1, wherein when the pretreatment raising / lowering operation tool is operated during automatic raising, the manual raising means releases the automatic raising and gives priority to the operation of the pretreatment raising / lowering operation tool. A combine characterized by comprising.