JPH06335313A - Reaping apparatus of combine harvester - Google Patents

Abstract

PURPOSE:To automatically control the height of a rake-in apparatus to the optimum level and improve the working efficiency. CONSTITUTION:The reaping apparatus of a combine harvester is provided with an ear-tip detection means 5, a means 6 for vertically driving a rake-in apparatus 3, a rake-in height controlling means 7 to adjust the height of the rake-in apparatus 3 to the optimum level by actuating the driving means 6 based on the detection result of the ear-tip detection means 5, a height detection means 8 to detect the level of the rake-in apparatus 3, a culm detection means 9 to detect the presence of the culm to be reaped, an automatically lowering means 10 for the rake-in apparatus to lower the rake-in apparatus 3 to the lowest position by actuating the driving means 6 based on the detection of the absence of the culm by the culm detection means 9 and an automatically returning means 11 for the position to store the height of the rake-in apparatus 3 immediately before the change of the detection result of the culm detection means 9 from the 'presence' to the 'absence' of the culm and actuating the driving means 6 to the last height stored in the memory based on the subsequent return of the detection result of the culm detection means 9 to the 'presence' of culm.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a combine harvester.

[0002]

2. Description of the Related Art Conventionally, in a normal combine for inputting the whole amount of cut grain culms into a threshing device, a cutting blade device provided at a front lower position and a grain collecting and feeding device provided behind the cutting blade device. There is provided a mowing device comprising a device and a drive rotary reel-like scraping device which is provided above the mowing blade device and is adjustable in elevation.

During the grain cutting operation, the cutting device is set to an appropriate height, and the height of the scraping device is changed and adjusted according to the height of the planted grain cutting device. This allows
The tip of the grain culm to be planted in the field is scraped by the scraping device, the grain stalk is cut by a cutting blade device, and the spiral of the grain culvert feeding device rotating in the rear direction causes one in the cutting width direction. Collect to a place. Then, from here, it is succeeded to a conveyor type transporting device at the rear side, and by this transporting device, the whole amount of the harvested grain culms is put into the handling chamber of the threshing device to perform the threshing treatment. When one side of the field has been mowed, the mowing device is raised to the non-working position, the aircraft is circulated to the next side, and the mowing device is lowered again to invade the uncut culm group on the next side. .

[0004]

As mentioned above, the height of the cutting device itself is hardly changed during the cutting work by the conventional ordinary combine harvester, but depending on the height of the planted culm, The operator had to change and adjust the height of the scraping device against the mowing device, which was a very complicated work. In addition, when one side of the field has been mowed, the mowing device is raised to the non-working position and the aircraft is circulated to the next side, this traveling operation causes
The harvested grain culm that had remained here sometimes spilled from the harvesting device, resulting in a loss of harvest. In order to prevent this, when one side has been cut, the scraping device is lowered to the lowest position with respect to the cutting device, the front of the cutting device is blocked by this scraping device, and the cut culm falls out. It is possible to prevent However, when the mowing work is restarted after the circulation, the mowing device must be lowered to the work position and the scraping device must be raised with respect to the mowing device to match the height of the tip of the planted grain culm. Such an operation is very complicated and has been a major factor in lowering work efficiency.

[0005]

In order to solve the above-mentioned problems, the present invention takes the following technical means.
That is, the cutting blade device 1 provided at the front lower position, the grain culm collecting and feeding device 2 provided at the rear of the cutting blade device 1, and the cutting blade device 1
In a combine harvesting device (4) comprising a scraping device (3) which can be adjusted up and down, a scooping device (3) for detecting the height of the tip part of a grain stem to be planted in a field. Based on the detection results of the lifting drive means 6 for vertically moving the cutting device 4 and the tip height detection means 5,
A raising height adjusting means 7 for operating the raising / lowering driving means 6 to adjust the raising and lowering of the raking device 3 to an appropriate height, and raising and lowering for detecting the raising / lowering position of the raking device 3 with respect to the mowing device 4. A position detecting means 8 and a grain culm detecting means 9 for detecting the presence or absence of a grain culm to be cut which is introduced into the reaping device 4;
Based on the detection result of the grain culm “absence” detected by the grain culm detecting means 9, the raising / lowering drive means 6 is operated, and the raking device automatic lowering means 10 for lowering the raking device 3 to the lowest position, and the grain culm. The raising / lowering position of the scraping device 3 immediately before the detection result by the detection means 9 is changed from the grain culm “present” to the grain culm “absent” is stored,
Next time, based on the result of detection by the grain culm detection means 9 returning from the grain culm “absence” to the grain culm “presence”, the raising / lowering position automatic resetting means 11 for activating the raising / lowering drive means 6 to the previously stored raising / lowering position. And a harvesting device for a combine, which is characterized in that

[0006]

In the combine harvester of the present invention, during the harvesting operation, the scraping height adjusting means 7 operates the lifting drive means 6 based on the detection result of the tip height detecting means 5. Then, the scraping device 3 is automatically adjusted up and down to an appropriate height. Therefore, the operator is freed from troublesome operation work.

When one side has been mowed, the grain culm detecting means 9 provided in the reaping device 4 detects "absence" of the grain culm to be mowed. Then, the scraping device automatic lowering means 10 operates the elevating and lowering driving means 6 to automatically lower the scraping device 3 to the lowest position. Thereby, the front part of the reaping device 4 is blocked by the scraping device 3, and it is possible to prevent spilled culms remaining in the reaping device when the machine is rotated. Therefore, the yield loss can be eliminated.

Further, in accordance with the above, the raising / lowering position of the scraping device 3 immediately before the detection result by the grain culm detecting means 9 is changed from the grain culm “present” to the grain culm “absent” is stored. And after going around,
By invading the uncut grain culm group on the next side, the detection result by the grain culm detecting means 9 returns from the grain culm “absence” to the grain culm “presence”. Then, by the lifting position automatic return means 11,
The lifting drive means 6 is operated to automatically raise and return the scraping device 3 to the previously stored lifting position. As a result, the scraping device 3 can be automatically adjusted to a proper height on the tip of the planted grain culm. Therefore, the cutting work on the next side can be started quickly, and the work efficiency can be dramatically improved.

As described above, the working efficiency is remarkably improved.

[0010]

EXAMPLE An example of the present invention will be described. The combine fuselage 12 is configured by providing a threshing device 14, a grain storage device 15, a control unit 16 and the like above a traveling device 13 of the endless track type. A harvesting device 4 described later is connected to the threshing device 14 by a transport device 17 so as to be able to move up and down.

The reaping device 4 is mainly composed of a grain culm guiding frame body 18, and the front end of the transporting device 17 containing the transport elevator 19 is connected to the back surface of the grain culm guiding frame body 18, The rear end of the carrier device 17 is connected to the threshing device 14 so as to be vertically rotatable. The mowing device 4 is configured to be vertically movable by the expansion and contraction operation of the mowing vertical cylinder 20. Further, a clipper type cutting blade device 1 is attached to the lower front end of the grain culm guiding frame body 18, and above the cutting blade device 1.
The scraping reel 21 (scraping device 3) is provided with left and right reel supporting arms.
It is rotatably supported by the frames 22 and 22. The cutting blade device 1, the scraping reel 21 (scraping device 3), and the grain culm collecting and feeding device 2 are driven by power transmission from the motive part of the machine body 12.

The reel supporting arms 22 and 22 are axially attached to the rear upper part of the grain culm guide frame 18 and are vertically rotatable by expansion and contraction of a reel vertical cylinder 23 (elevating drive means 6). Constitute. In addition, the reel support arm 2 is attached to the shaft support portion of the reel support arm 22 to the grain culm guide frame 18.
A potentiometer 24 (elevating position detecting means 8) for detecting the vertical rotation angle of 2 is provided. The potentiometer 24
It may be replaced with a rotary encoder.

The left side (the uncut side in the counterclockwise cutting) of the reel supporting arm 22 extends its free end side to a position forward of the scraping device 3 and has a tip at the front end thereof. A height detection sensor 25 (tip height detection means 5) is provided. The tip height detection sensor 25 is composed of a long sensor 27 having a long actuator 26 depending thereon and a short sensor 29 having a short actuator 28 depending thereon. The long sensor 2
7 and the short sensor 29 are both ON / OFF sensors,
The long actuator 26, the short actuator 28
However, it is configured to turn on when pushed and rotated rearward from the drooping state due to the contact of the grain ear tips.

Further, grass bodies 30, 30 are provided on the left and right sides of the front end portion of the grain culm guiding frame body 18, and the left side grass body 30 is provided.
A grain culm presence / absence detection sensor 31 (grain culm detection means 9) is provided on the back. The grain culm presence / absence detection sensor 31 is an ON / OFF sensor in which the actuator protrudes toward the inside of the mowing, and the actuator contacts the planted grain culm introduced into the mowing and rotates backward. Then, it is turned on.

Therefore, a controller for automatically adjusting the scraping height.
A long sensor 27 and a short sensor 29 of the tip height detecting sensor 25 are connected to the input side of the la 32, and the reel vertical cylinder 23 (elevating drive means 6) is operated to the output side thereof. The reel up / down valve solenoid 33 to be controlled is connected. This is the scraping height adjusting means 6. Further, to the controller 34 for automatically lowering the scraping device, the grain culm presence / absence detection sensor 31 (grain culm detecting means 9) and the potentiometer 24 are connected to the input side thereof, and the output side thereof is connected. Is a valve solenoid 33 for the reel up / down, which controls the operation of the reel up / down cylinder 23 (elevation drive means 6).
Connect. This is the scraping device automatic lowering means 10.

Further, a controller 3 for automatically returning the ascending / descending position.
5, the potentiometer 24 is provided on the input side thereof.
(Elevating position detecting means 8) and grain culm presence / absence detecting sensor 31 (grain culm detecting means 9) are connected, and the output side thereof is the above-mentioned reel.
A reel up / down valve solenoid 33 for controlling the operation of the reel up / down cylinder 23 (elevation drive means 6) is connected. This is the lifting position automatic return means 11.

Incidentally, the controller 32 for automatically adjusting the scraping height, the controller 34 for automatically lowering the scraping device, and the controller 35 for automatically returning the ascending / descending position may be constructed integrally. In the reaping work, the reaping upper and lower cylinders 20 are expanded and contracted to adjust the reaping device 4 to an appropriate height, and the traveling device 13 is driven to move the machine body 12 forward to enter the uncut culm group.

During the mowing operation, the scraping height adjusting means 7 operates the elevating and lowering driving means 6 based on the detection result of the tip height detecting means 5 to automatically adjust the scraping device 3 to be proper. Adjust up and down to height. That is, a state in which only the long sensor 27 is turned on is set to a neutral state, and when both the long sensor 27 and the short sensor 29 are turned on, the control for automatically adjusting the scraping height is performed. The output from the rotor 32 is made to the valve solenoid 33 for vertical movement of the reel.
As a result, the reel upper and lower cylinders 23 extend, and the scraping reel 21 rises with respect to the cutting device 4. When both the long length sensor 27 and the short length sensor 29 are turned off, the reverse output is made from the controller 32 for automatically adjusting the scraping height to the reel up / down valve solenoid 33. . As a result, the reel upper and lower cylinders 23 are shortened, and the scraping reel 21 is lowered with respect to the mowing device 4. In this way, the scraping reel 21
Can automatically and properly maintain the height relationship with the tip of the planted culm. Therefore, the operator is freed from troublesome operation work.

When one side has been mowed, the grain culm detecting means 9 provided in the reaping device 4 detects "absence" of the grain culm to be mowed. Then, the scraping device automatic lowering means 10 operates the elevating and lowering driving means 6 to automatically lower the scraping device 3 to the lowest position. That is, when the grain culm presence / absence detection sensor 31 changes from ON to OFF, the controller 34 for automatically lowering the rubbing device until the potentiometer 24 detects the lowest limit position is read from the reel. Output to the valve solenoid 33 for vertical movement. As a result, the reel upper and lower cylinders 23 are shortened, and the scraping reel 21 is automatically lowered to the lower limit position with respect to the cutting device 4. Thereby, the grain culm guiding frame 1 of the reaping device 4
The front part of 8 is closed by the scraping reel 21, and when the machine body 12 is rotated, the cut grain culm remaining in the grain culm guiding frame 18 can be prevented from spilling. Therefore, the yield loss can be eliminated. Further, as the grain culm detecting means 9, the grain culm presence / absence detection sensor 31 is used.
At the same time, a grain culm presence / absence detection sensor 31b may be provided at the beginning of the transport elevator 19 of the transporting device 17 to detect the presence or absence of the culm grain in that portion. That is, when the grain culm presence / absence detection sensor 31 changes from ON to OFF while the grain culm presence / absence detection sensor 31b remains ON, the potentiometer 24 detects the lowest position until the potentiometer 24 detects the lowest position. An output is made from the controller 34 for automatically lowering the scraping device to the valve solenoid 33 for raising and lowering the reel. As a result, the reel upper and lower cylinders 23 are shortened, and the scraping reel 21 is automatically lowered to the lower limit position with respect to the cutting device 4.

With the automatic lowering of the scraping reel 21 described above, the result of detection by the grain culm detecting means 9 is the grain culm "present".
The raising / lowering position of the scraping device 3 immediately before the change from the grain culm to “no” is stored. Then, after traveling, by invading the uncut grain culm group on the next side, the detection result by the grain culm detecting means 9 returns from the grain culm “absence” to the grain culm “presence”. Then, the ascending / descending position automatic returning means 11 operates the ascending / descending driving means 6 to automatically ascend and return the scraping device 3 to the previously stored ascending / descending position. That is, the detection value of the potentiometer 24 immediately before the grain culm presence / absence detection sensor 31 changes from ON to OFF is stored in the controller 35 for automatically returning to the ascending / descending position. Then, after traveling, by entering the uncut grain culm group on the next side, the grain culm presence / absence detection sensor 31 returns from OFF to ON. Then, until the detected value of the current potentiometer 24 matches the previously stored value,
From the controller 35 for automatically returning the ascending / descending position to the reel
Output to the valve solenoid 33 for vertical movement. As a result, the reel upper and lower cylinders 23 are extended, and the scraping reel 21 is automatically returned to the same height as when the last mowing was completed. As a result, the scraping reel 21 is
The height of the tip of the planted culm can be automatically adjusted to an appropriate height. Therefore, the cutting work on the next side can be started quickly, and the work efficiency can be dramatically improved.

The left and right side plates 3 of the grain culm guide frame 18 are also provided.
A grain culm collecting and feeding device 2 having a spiral body is rotatably mounted between 6 and 37 so as to be rotatable. The left end of the rotary shaft 38 of the grain culm feeder 2 is supported by the bearing 40 of the left support member 39,
An input pulley 41 is attached to the protruding end. The left side support member 39 is configured such that an adjuster bolt 42 that engages with the upper part of the left side plate 36 is provided at an upper part thereof, and a locking device 43 that is engageable with and disengageable from a lower part of the left side plate 36 is provided at a lower part thereof. Further, the right end of the rotary shaft 38 of the grain culm collecting and feeding device 2 is supported by the boss 45 of the right side support member 44. The right side support member 4
4, the adjuster bolt 46 that engages with the upper portion of the right side plate 37 is provided at the upper portion, and the locking device 47 that can be engaged with and disengaged from the lower portion of the right side plate 37 is provided at the lower portion.

Further, the left and right reel supporting arms 22,
Chains 48, 48 are suspended in the middle of 22, and hooks 49, 49 are attached to the free ends of the chains 48, 48. On the other hand, holes 50, 50 with which the hooks 49, 49 can be engaged are formed in the left and right end portions of the spiral body of the grain culm collecting and feeding device 2. With the above structure, when the harvested grain culm is clogged in the grain culm collecting and feeding device 2, first, the reel up / down cylinders 23, 23 are shortened and the reel supporting arm 22,
22 is lowered. The reel supporting arm 22,
Hooks 49, 49 of chains 48, 48 suspended on 22
The holes 50, 50 formed in the spiral of the grain-culm collecting and feeding device 2.
Engage with. Along with this, the left side support member 3
9. Release the lock devices 43 and 47 of the right side support member 44. Then, in this state, the reel upper and lower cylinders 23,
By extending 23 and raising the reel supporting arms 22 and 22, the grain-culm collecting and feeding device 2 is lifted,
The space between the grain culm guiding frame and the bottom wall 51 is opened, so that maintenance of this portion can be easily performed.

Further, the carrying device 17 is bent and formed in a V shape in a side view. As a result, in the end portion of the transfer device 17 reaching the communication port 52 with the threshing device 14,
The bottom slope is gentle. The transport elevator 19 built in the transport device 17 is constructed by winding a chain 56 having a large number of slats 55 over a driven sprocket 53 at the transport start end and a drive sprocket 54 at the transport end. A roller 57 is provided on the connecting shaft of the chain 56, and the roller 57 is guided by a chain guide 58 provided on the bottom of the bent portion of the transfer device 17,
A chain 56 locus is formed. Further, the drive sprocket 54 is arranged at a relatively high position from the bottom surface of the carrying device 17. Accordingly, the distance t between the lower locus of the latter half of the 56th winding of the chain and the rear bottom surface of the transport device 17 is
It becomes larger from the bent portion to the communication port 52.

The harvested grain culm which has been taken over from the harvesting device 4 is transferred rearward on the bottom surface of the transport device 17 by the action of the slats 55, and the threshing device 14 is passed through the communication port 52.
It is thrown in and threshed. As described above, the distance t between the lower locus of the latter half of the winding of the chain 56 and the rear bottom surface of the transport device 17 increases from the bent portion to the communication port 52. Therefore, the cut grain culm can be easily taken into the handling barrel 59 of the threshing device 14, and the communication port 52
There is no stagnation and clogging in the vicinity.

Further, the left and right traveling devices 13, 13 are
Drive sprockets 61, 61 driven from the mission case 60, a group of rolling wheels 63, 63 supported by rolling wheel supporting frames 62, 62, and a rear end idle roller 6
It is configured by winding chrome rollers 65, 65 over 4, 64. The support arms 6 of the rollers 66, 66 are provided on the upper intermediate portions of the wheel support frames 62, 62 in the front-rear direction.
7, 67 are pivotally mounted vertically and the supporting arms
Switching cylinder 68 for forcibly rotating the gears 67, 67,
Attach 68. When the switching cylinders 68, 68 are shortened, the rollers 66, 66 move up to support the upper inner peripheral surfaces of the rollers 65, 65. When the switching cylinders 68, 68 are extended,
The rollers 66, 66 descend to move the rollers 65, 6
5 The state in which the lower inner peripheral surface is supported is obtained.

Further, there are provided switches 69, 69 for detecting which of the left and right side clutches is disengaged when the vehicle body 12 is turning, and a traveling speed detection sensor 70 for detecting a traveling speed. Then, the roller switching controller 71
On the other hand, on the input side thereof, the switches 69, 69 and the traveling speed detection sensor 70 are connected, and on the output side thereof,
Roller switching valve solenoids 72, 72 for expanding and contracting the switching cylinders 68, 68 are connected.

With the above structure, when either the left or right side clutch is disengaged, the switch 6 is operated.
9 detects, and the roller switching controller 71
An output is made to the switching valve solenoid 72, and the switching cylinder 68 on the side clutch disengagement side is extended.
As a result, the lower inner peripheral surface of the crawler 65 on the inside of the turn is supported by the roller 66, the roller 66 acts as a crawler guide, and the crawler 65 is prevented from coming off from the group of rolling wheels 63. Can be prevented.

When the traveling speed detecting sensor 70 detects a low speed equal to or lower than a predetermined value, the left and right roller switching valve solenoids 72, 72 are connected from the roller switching controller 71.
Output to 72, the left and right switching cylinders extend. As a result, the lower inner peripheral surfaces of the left and right rollers 65, 65 are supported by the rollers 66, 66. That is, the traveling speed is low during the mowing work, and it is likely that the vehicle will make a sharp turn when traveling at a low speed. In such a case, it is possible to prevent the roller 65 from coming off from the group of rolling wheels 63 by making the roller 66 act as a roller guide in advance.

When the traveling speed detection sensor 70 detects a high speed equal to or higher than a predetermined value, the roller switching controller 71 shifts the left and right roller switching valve solenoids 72,
Output is made to 72, and the left and right switching cylinders are shortened. As a result, the upper inner peripheral surfaces of the left and right rollers 65, 65 are supported by the rollers 66, 66. That is, the traveling speed is high at the time of traveling on the road, and the fluttering of the upper portions of the rollers 65, 65, which is likely to occur at such a time, can be suppressed by the rollers 66, 66. As a result, the life of the rollers 65, 65 can be extended and the riding comfort can be improved.

[Brief description of drawings]

FIG. 1 is a side view for explaining the operation in one embodiment of the present invention.

FIG. 2 is an explanatory diagram of a main part in one embodiment of the present invention.

FIG. 3 is a side view for explaining the operation in the embodiment of the present invention.

FIG. 4 is a side view of the combine in the embodiment of the present invention.

FIG. 5 is a plan view of a combine according to an embodiment of the present invention.

FIG. 6 is a block diagram of an essential part in one embodiment of the present invention.

FIG. 7 is a block diagram of another main part in one embodiment of the present invention.

FIG. 8 is a block diagram of another main part in one embodiment of the present invention.

FIG. 9 is a side view for explaining the operation of another portion in the embodiment of the present invention.

FIG. 10 is a side view for explaining the operation of another portion in the embodiment of the present invention.

FIG. 11 is a front view for explaining the operation of another portion in the embodiment of the present invention.

FIG. 12 is a partial explanatory diagram of the embodiment of the present invention.

FIG. 13 is a diagram illustrating a part of another configuration example according to the embodiment of the present invention.

FIG. 14 is a side view of the combine of the partial structure according to the embodiment of the present invention.

FIG. 15 is a partial bottom view of the embodiment of the present invention.

FIG. 16 is a partial side view of the embodiment of the present invention.

FIG. 17 is a partial front sectional view of the embodiment of the present invention.

FIG. 18 is a side view for explaining a part of the operation in the embodiment of the present invention.

FIG. 19 is a side view for explaining a part of the operation in the embodiment of the present invention.

FIG. 20 is a plan view for explaining the operation of a part of the embodiment of the present invention.

FIG. 21 is a block diagram of part of the embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Cutting blade device 2 Grain collecting and feeding device 3 Scraping device 4 Mowing device 5 Tip height adjusting means 6 Elevating drive means 7 Scraping height adjusting means 8 Elevating position detecting means 9 Grain stalk detecting means 10 Automatic scraping device descending Means 11 Automatic lifting position returning means

Claims (1)

[Claims] 1. A cutting blade device (1) provided at a front lower position, a grain culm collecting and feeding device (2) provided behind the cutting blade device (1), and an adjustable scraper provided above the cutting blade device (1). In a combine harvesting device (4) comprising a cutting device (3), a tip height detecting means (5) for detecting the height of the tip of a grain culm to be planted in a field, and the scraping device (3) are moved up and down with respect to the cutting device (4). Based on the detection result of the raising / lowering driving means 6 and the tip height detecting means 5, the raising / lowering driving means 6 is operated to raise / lower the raking device 3 to an appropriate height. And an elevating position detecting means 8 for detecting an elevating position of the scraping device 3 with respect to the mowing device 4, and a grain culm detecting means 9 for detecting the presence or absence of a mowing target grain culm introduced into the reaping device 4.
And a raking device automatic lowering means 10 for actuating the elevating and lowering driving means 6 based on the result of the grain culm “absence” detection by the grain culm detecting means 9 and lowering the raking device 3 to the lowest position.
The raising / lowering position of the scraping device 3 immediately before the detection result by the grain culm detecting means 9 is changed from the grain culm “present” to the grain culm “absent” is stored, and the next time the detection result by the grain culm detecting means 9 is the grain culm “ A combine harvester, which is provided with an elevating position automatic return means 11 for operating the elevating drive means 6 to the previously stored elevating position based on a return from "no" to "existence" of grain.