JPH0970220A - Threshing and nipping-transfer controller in combine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the clogging of reaped ear-tip-side culms in a threshing chamber in the case where the ear tip parts are reaped, without needing manual reaping at a corner of a field, and threshed by setting the reaping part in a combine at a high position. SOLUTION: A reaping part 14 capable of adequately adjusting reaping height is mounted at the front side of a running vehicle 1, and a threshing machine 6 for threshing culms is loaded on the upper part of the running vehicle 1. Elastically pressing power of a nipping rod 8, which elastically presses a threshing and transferring chain 7 of the threshing machine 6, is made to changeable between a strong nipping state where culms are nipped and 21 weak nipping state where the nipping is released or culms arc weakly nipped. When the reaping state of the reaping part 14 is adjusted for high reaping, if the burden determined by a detecting means for detecting a transmitting burden at the threshing machine side is large, a strong nipping state is kept, and if the burden is below a specified level, the nipping power is automatically adjusted so as to be a nipping releasing state or a weakly nipping state.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a threshing / holding and conveying control device for automatically changing and adjusting the gripping force of a threshing rod held by a threshing / transporting chain of a threshing machine in a combine.

[0002]

2. Description of the Related Art Conventionally, in cutting and threshing work in combine harvesters, when harvesting growing rice and wheat in a field, when the combine is loaded into the field, the space into which the combine is placed is hand-cut in advance and It is necessary to put the combine into the already-cut area and start the work.However, since the hand-cutting work has become complicated these days, when the combine is put into the field without hand-cutting, the cutting section is adjusted to high cutting and the tips are cut. A work mode has been adopted in which only the side is mowed, and the tip-side grain culm that has been highly mowed is conveyed to the upper rear side by the conveying device of the mowing section and is handed over to the conveying chain of the thresher and threshing. However, if a grain culm only on the tip side is held by the transport chain of the thresher and its slinging rod, it is difficult to thresh because it does not hang on the handling barrel in the handling room, and there are many unhandled residues, resulting in many threshing losses. Therefore, when performing such high-cutting work,
The technical measures were taken to nullify the action of the sliding rod acting on the sliding chain and supply all the transferred grain culms into the handling room. That is, a typical example of this prior art is Japanese Patent Laid-Open No. 6-3.
It is disclosed in Japanese Patent No. 8612.

[0003]

In the above-mentioned prior art,
Even if a large amount of straw is generated in the handling room and it is impossible to thresh, further, if all of the cuttings on the tip side at the time of high cutting are supplied to the handling room, it becomes impossible to thresh and thresh There was a risk of causing an unexpected situation that would damage the transmission system to the department.

[0004]

The present invention takes the following technical means in order to solve the above-mentioned problems. That is, the mowing unit 14 capable of appropriately adjusting the mowing height is provided on the front side of the traveling vehicle body 1.
And a thresher 6 for threshing the grain culms that are cut by the reaping unit 14 and conveyed backward and upward by the reaping grain culm conveying device of the reaping unit 14 is mounted on the upper part of the traveling vehicle 1. The threshing and transporting chain 7 of Fig. 7 holds the resilience and holding force of the slinging rod 8 which is held in a strong holding state in which the grain culm is held and the holding culm is pulled out into the handling room (a) by the rotation of the handling cylinder 11. When it is configured to be switchable to an open state or a force-holding state, and when the cutting state of the cutting unit 14 is adjusted to high cutting, when the load by the detection means for detecting the transmission load on the threshing machine side becomes large, A threshing-holding and conveying control device for a combine, which holds a strong holding state and automatically controls the holding state to be held open or weakly held when the load is smaller than a certain level.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An example of the present invention will be described in detail with reference to the drawings. Reference numeral 1 denotes a traveling vehicle body, which is a pair of left and right endless track zones (black and white).
(2) An engine 4 is mounted on one side near the upper front side of a chassis 3 equipped with 2) and the chassis 3 is propelled by driving the endless track zones 2 and 2 via a transmission mechanism in a mission case 5. Is configured to.

A threshing machine 6 is mounted on the upper part of the chassis 3. The threshing rod 8 held by the threshing conveying chain 7 of the threshing machine 6 is constantly pressed by the chain 7 by the spring 9. However, a part of the starting end side of the slinging rod 8 is electromagnetically operated rod 10 or the like. The operating mechanism is used to release the pressure or weaken the pressure. That is, the holding power of the grain culms is adjustable.

Further, the load applied to the rotary support shaft 12 of the handling cylinder 11 which is rotatably supported in the handling chamber (a) of the threshing device 6 can be measured by a strain gauge 13 such as a load cell. Reference numeral 14 denotes a mowing unit, which comprises a grass body 15, a raising device 16, a cutting blade device 17, a scraping device 18, a stock carrier holding and conveying device 19, a tip locking and conveying device 20, and the like, and rice grown in the field. The grain culms of wheat are mowed, and the grain culms are sent backward and upward while being laid down in a horizontal posture, and the root portion is transferred to the threshing transport chain 7 of the threshing device 6 described above, and the tip side is into the handling room (a). It is configured to send in.

The structure of the reaping section 14 will be briefly described. The base side of a cylindrical transmission case 14a which doubles as a frame of the reaping section 14 is laterally above the front part of the chassis 3 on the side of the traveling vehicle body 1. Direction rotatably around an axial center (b), and the cutting cylinder is provided with a hydraulic cylinder -21 as a hydraulic lifting mechanism between the chassis 3 and the transmission case 14a. The part 14 is configured to be swingable up and down.

That is, the vertical valve height of the mowing section 14 can be adjusted by switching the hydraulic valve 22 of the elevating hydraulic cylinder 21 with the operating lever 23, and by this operation, the high cutting of the grain can be performed. The low cutting can be adjusted. Next, the control mechanism will be described. 24 is a cutting height detector, which is an example of a potentiometer for detecting that the turning height of the transmission case 14a is above a certain range.
Is attached to the chassis 3 or the column 36 standing on the upper surface of the mission case with a switch (may be a limit switch),
The cylindrical transmission case 14a and the detection arm 24a of the potentiometer 24 are connected by a rod 39. When the reaper 14 swings up and rotates, the detected value of the potentiometer 24 increases with the amount of rotation, and when it reaches a predetermined value, a command signal is issued from a microcomputer described later. Has become. 25
Is a thresher load detector, and an electric signal is generated when the strain gauge 13 detects a load above a certain level.

Reference numeral 26 is a load detector applied to the engine 4,
A strain gauge is provided on the output shaft of the engine so that an electric signal is emitted when the strain exceeds a certain level. 27
Is a traveling speed detector configured to detect the number of rotations of an appropriate rotating shaft of the traveling transmission system. Reference numeral 28 denotes a handling depth detector, which detects the position of the transfer grain culm on the side of the ears while the harvested grain culm is transported by the stock carrier holding transport device 19 and the tip locking transport device 20. ) A handling depth configured to change the end side position of the stock source holding and conveying device 19 so that the stock side can be properly supplied to the inside of the stock source side from the stock holding and conveying device 19 to the threshing conveying chain 7. It is a detector for control.

Reference numeral 29 is a detector for detecting the number of rotations of the handle barrel shaft 12. Reference numeral 30 denotes a work start detector, which is turned on when the threshing operation lever 31 for operating the transmission clutch on the threshing device 6 side is switched from "off" to "on" to detect this. 32 is a microcomputer, 33 is an input interface, and 34 is an output interface.
The signal from each of the detectors 24 to 30 is sent to the micro computer 32 via the input interface 33, and the command signal from the micro computer 32 is output to the output interface. It is configured to operate various actuators for control via the space 34.

In the embodiment, while the traveling speed detector 27 detects a low work speed, the cutting height detector 24 detects high cutting and the handling depth detector 28 indicates that the transfer grain is " When detecting the handling depth control state, the engine load detector 26 detects an appropriate load state of not more than a predetermined value, and the thresher load detector 25 is overloaded. When this is detected, the solenoid 35 is de-energized so that the electromagnetic actuating rod 10 as an actuator presses the slider 8 strongly against the threshing conveyance chain 7, and the elastic force of the spring 9 causes the slider 8 to move. The grain culm is clamped and transferred to the side of the chain 7. Therefore, the grain culm is a handling room (a).
Threshing is performed while being transferred by the threshing conveyance chain 7 without being drawn in.

The detection of each of the above-mentioned detectors is in the same detection state except the detection of the threshing machine load detector 25, and the threshing machine load detector 25 is not the above-mentioned overload state but a normal load state having a work margin. If it is detected that the solenoid 35 is excited, the electromagnetically actuated rod 10 operates the slider 8 against the spring 9 to open or weaken the pressure contact with the threshing conveyance chain 7. Therefore, the grain culm near the tip end side transferred by the stock-source holding and conveying device 19 is not held by the threshing-conveying chain 7 and the slinging rod 8 and is directly supplied into the handling room (a) of the threshing machine 6. Will be. Therefore, if you perform tip side cutting while entering the field,
Since there is almost no load on the threshing machine side since the beginning of the work, all the grain culms cut in the handling room (a) are supplied and threshed without difficulty.

Further, in the field corner portion of the initial stage of the mowing work, when the ridge is high, the mowing section turns without colliding with the ridge, and the mowing work is performed during this turning to eliminate the hand cutting work. Therefore, the cutting unit 14 is raised to a predetermined height and turned while continuing the work. At this time, since the threshing processing work is being continued in the handling room (a) of the threshing machine 6, the threshing load may be overloaded. In such a case, if the grain culm at the ear cutting portion is supplied into the handling room (a), the clogging phenomenon of straw wastes immediately occurs in the handling room and the work becomes impossible. Therefore, even if the grains are scattered to some extent outside the machine and threshing loss occurs, when the threshing machine load detector 25 detects an overload, the solenoid 35 is de-energized to repress the spring 9 in order to improve work efficiency. With the force, the sling rod 8 is pressed against the chain 7 side, and the grain culm is held and transferred while threshing.

Therefore, according to the embodiment of the present invention, when hand cutting work is omitted and the cutting work of the corner portion of the ridge is cut high, when the threshing load is large and the overload occurs, the normal grain-carrying and carrying operation is carried out. Automatically select the threshing work in the state, and when the load is light load within the normal predetermined range, it is automatically switched to the work to supply all the grain culms into the handling room, the threshing part is damaged, It is possible to prevent inability to work due to clogging of straw waste.

In many combine harvesters, when the normal mowing section side reaches a certain height, power transmission on the mowing section side automatically stops. In such a combine, it is not possible to adopt the super-high cutting of the present invention, that is, the form of cutting near the tips to eliminate hand cutting work. Therefore, a solution to the problem in such a case will be described.

In FIG. 2, the mission case 5 in the front portion of the traveling vehicle body 1 is provided with a column 36 for rotatably attaching the mowing section 14, and an input pulley 37 is provided on the upper end side of the column. A metal 48 bearing the drive shaft 38 to be transmitted is attached, and the base side of the cylindrical transmission case 14a for transmitting the cutting section 14 is rotated around the shaft center (b) of the drive shaft 38. It is freely pivoted. Then, the detection actuating arm 24a of the cutting height detector 24 and the transmission case 14a.
And the rod 39 are interlocked with each other, the detector 24 detects the transmission case 14a when the transmission case 14a is swung up to a certain level or more, that is, when the reaper 14 is above a certain range. Has been done. This is as described above.
However, the corner part on the edge of the field is 4 in the rectangular field.
There are four places, and the hand-cutting part is after cutting these four places.
It is unnecessary to continue the power transmission of the mowing unit 14 when the mowing unit has a certain height during turning, and it is preferable that the transmission of the mowing unit 14 is stopped. That is, when the cutting unit is being transmitted during turning, the transfer or takeover of the grain culm is generally inaccurate and some transport disturbance occurs, and the grain culm in the early stage of mowing falls off from the scraping device or the transfer device. Is likely to occur. In addition, it is dangerous if the mowing unit is driven during turning, and it is likely to cause damage.

From such a point of view, the manual on / off switch 40 is provided so that the above-mentioned automatic slinging operation control can be brought into a non-controlled state. That is, when the switch 40 is turned off, the solenoid 35 is not energized so that the picking rod 8 does not escape from the threshing conveyance chain 7 even when the cutting unit 14 is set high. When the reaper unit 14 reaches a predetermined height and is in a turnable state while the switch 40 in this case is off, the input from the microcomputer 32 via the output interface 34 is performed. The servo cylinder of the electromagnetic cylinder-44 is operated so that the tension clutch 43 of the V-belt 42 wound between the pulley 37 and the driving pulley 41 attached to the output shaft of the engine 4 is turned on and off. Is configured to send a command signal for operating the counter 45 in the forward and reverse directions. That is, when the mowing unit 14 reaches a predetermined height, the power transmission on the mowing unit 14 side automatically becomes “off”,
The above-mentioned problems are solved. More specifically, when the switch 40 is turned off, the transmission on the cutting unit 14 side is automatically cut off at a predetermined height irrelevant to the height of the cutting unit 14 during the operation control of the sling rod 8. It is like this. The height detector 2 of the cutting unit 14
In Example 4, a detector based on an electric resistance fluctuation value composed of a potentiometer whose voltage fluctuates according to the cutting height is adopted, but the invention is not limited to this and is constant. It may be performed by a micro switch that detects the height at that time. In the detector using this micro switch, switches are provided at two positions above and below so that the proper height can be detected particularly.

Reference numeral 46 in the drawing denotes a tension clutch 4
3 is a tension pulley that composes 3. The tension clutch 43 is only an example, and any other clutch mechanism may be used. Like the embodiment of the above example, when the mowing unit 14 reaches a certain height, the mowing unit 1 automatically
In a configuration in which the power transmission on the 4 side is cut off and all the power of the raising device 16, the cutting blade device 17, the grain transfer device 18, etc. is cut off, it is possible to adjust the control range of the height of the cutting unit 14. Required. That is, if the mowing unit 14 has only one fixed height, when the field is extremely soft, the running crawler belt 2 sinks deep into the ground from the surface of the field and the vehicle travels. In this case, the mowing unit 14 is set higher than the vehicle body 1 to perform the mowing work. Therefore, when the reaper 14 is swung upward during turning, the automatic transmission works to automatically cut off the power transmission to the reaper 14, but if the reaper 14 is raised even a little, the transmission is cut off immediately. become. Further, when the endless track zone 2 sinks extremely deeply, the power may be cut off even during normal mowing work, and the work may become impossible. In order to avoid such an unexpected situation, the detection of the detector 24 is performed so that the automatic transmission stop of the mowing unit 14 can adjust the time when the automatic control function is executed when the mowing unit 14 is raised. It is required to change the time.

Therefore, the manual dial adjuster 47 is constructed so that the automatic control range can be adjusted appropriately.
That is, with the dial adjuster 47, when the cutting unit 14 reaches an arbitrary height that has been adjusted and set, the cretching mechanism is provided in the cylinder by the servomotor 45 so that the power transmission of the cutting unit 14 is turned off. It is operated by the mechanism 44.

[0021]

According to the present invention, in the case of performing high-cutting work for cutting off the tip end side while omitting the hand-cutting work on the corner portion near the ridge of the field, the inside of the threshing machine is handled. If the straw waste is accumulated and the threshing work load is overloaded, the threshing transfer chain and the threshing rod are used to perform the threshing work in the holding and transporting state without supplying the harvested tip side grain culm to the handling room. If there is a normal room, the grain will be supplied to the handling room for threshing without holding and transferring, and work will be performed according to the threshing load without clogging the handling room of the threshing machine with straw waste. You can

[Brief description of drawings]

1] Side view

FIG. 2 is a side view of a main part.

FIG. 3 is a plan view of a main part

FIG. 4 is a side view of a main part.

[Fig. 5] Hydraulic circuit diagram

FIG. 6 is a control circuit diagram

[Explanation of symbols]

 1 Traveling vehicle 6 Threshing machine 7 Threshing transport chain 8 Sliding rod 11 Handling barrel 14 Mowing section (a) Handling room

Claims (1)

[Claims] 1. A reaping unit 14 is provided on the front side of the traveling vehicle body 1, the cutting height of which can be appropriately adjusted. The reaping unit of the reaping unit 14 is used for reaping on the upper portion of the traveling vehicle body 1. A threshing machine 6 for threshing grain culms conveyed rearward and upward is mounted, and the threshing conveying chain 7 of the threshing machine 6 represses the resilience and holding force of the sling rods 8 to hold the grain culms in a strong holding state. In the case of adjusting the mowing state of the mowing section 14 to high mowing, the cleaving grain culm and the mowing section 14 can be switched to a cleaving open state in which the claw 11 is pulled out by the rotating action of the handling cylinder 11 or a weak force cleaving state. In addition, when the load by the detecting means for detecting the transmission load on the threshing machine side is large, the strong holding state is maintained, and when the load is less than a certain value, the holding control is automatically performed so that the holding holding state or the weak holding state is set. Threshing and Holding and Carrying System for Combines Control device.