JPH08242661A - Feeding and transferring apparatus of combine harvester - Google Patents

Abstract

PURPOSE: To prevent the generation of unthreshed grains on an extremely short cum and correct the transfer posture of a culm in the delivery of the culm from a feeding and transferring apparatus to a feed chain in a low-speed reaping work. CONSTITUTION: This feeding and transferring apparatus 5 of a combine harvester is composed of a reaping work detection means 13 to detect the state of the reaping work, a moving distance detection means 14 to detect the moved distance of the starting end of the feeding and transferring apparatus 5, a threshing delivery controlling means 12 to change the threshing delivery distance 9 between the delivery end of the feeding and transferring apparatus 5 and the starting end of a feed chain 6, a reaping speed detection means 10 to detect the reaping speed of a driving apparatus 1 and a distance controlling means 101 to shorten the distance of the threshing delivery controlling means 12 when the speed detected by the reaping speed detection means 10 is lower than a prescribed level.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a combine feeding and conveying apparatus.

[0002]

2. Description of the Related Art A conventional combine feeding and conveying apparatus detects the length of a cut grain culm and feeds and conveys it so that a handling depth suitable for the length can be obtained. This is a configuration in which the distance between the start ends of the devices is changed.

[0003]

In the above-described combine feeding and conveying apparatus, the feeding speeds of the stock-source feeding apparatus and the feeding and feeding apparatus are also slowed down in connection with the reduction of the reaping work speed during fall cutting. When the grain culm is taken over from the end of the feeding and conveying device to the beginning of the feed chain due to a speed difference with the feed chain that is a constant speed drive, the stock side of the grain culvert is suddenly taken over by the feed chain. , The grain culm will be conveyed by the leading stock side. As a result, there is a drawback that the threshing performance is reduced.

The present invention is intended to solve such a problem.

[0005]

The combine feeding and conveying apparatus according to the present invention solves the above problems and has the following structure. In the combine feeding and conveying apparatus having the above-mentioned configuration, the cutting operation detecting means 13 for detecting the cutting operation state, the movement amount detecting means 14 for detecting the movement amount of the starting end portion of the feeding and conveying apparatus 5, and the terminal end of the feeding and conveying apparatus 5. Threshing transfer adjusting means 12 for changing the threshing transfer interval 9 between the cutting portion and the starting end of the feed chain 6, and a cutting work speed detecting means 10 for detecting the cutting work speed of the traveling device 1.
And the approach adjusting means 101 for changing the threshing and handing over adjusting means 12 to the interval approaching side in association with the detection of the mowing work speed detecting means 10 at a constant speed or less. And

[0006]

[Operation] When the combine is moved forward and the harvesting work is started,
The planted culm is cut by the reaping device 4 and is conveyed backward by the stock-source conveying device 3. The grain culm transported to the end portion of the stock carrier device 3 is taken over to the start end portion of the supply carrier device 5. At that time, the tip detecting means 11a and 11 are used.
When b does not detect the tip of the grain culm, that is, when the grain culm is a short culm, the tip of the grain culm is supplied by the takeover adjusting means 15 so as to pass between the tip detecting means 11a and 11b. The starting end portion of the carrier device 5 is lowered to supply the carrier device 5.
The starting end and the end of the stock carrier device 3 are brought close to each other to take over. Then, the starting end portion of the supply / conveyance device 5 holds the root side of the grain culm, and thus the stock side is also held when being taken over by the feed chain 6 of the threshing device 7. In other words, the tip portion of the grain culm always passes between the tip detecting means 11a and 11b, so that the grain can be threshed with an appropriate handling depth.

However, when the length of the grain culm is extremely short, it may not be possible to deal with the problem as described above. Therefore, the reaping operation detection means 13 detects that the reaping operation is in progress, and the movement amount detection means 14 detects that the starting end portion of the supply conveying device 5 and the terminating end portion of the stock source conveying device 3 are closest to each other. And the tip detecting means 11a and 1
When 1b does not detect the tip of the grain culm, the unhandled grain culm is left untouched.
Horizontal gap 9 between the feeding and conveying device 5 and the feed chain 6
Try to lengthen. As a result, when the grain culm is taken over from the end portion of the supply / conveyance device 5 to the start end portion of the feed chain 6, the root side of the grain is held by the feed chain 6 more. It will be adjusted to the working position side of the handling cylinder.

In performing the mowing work in this way, the combine does not always travel at a constant mowing work speed. For example, when the planted culm has fallen, the drive speed of the harvesting device 4 is also decreased in association with the decrease in the traveling speed of the combine. As the drive speed of the mowing speed 4 decreases, the transfer speeds of the stock transfer device 3 and the supply transfer device 5 also decrease. At this time, the feeding speed of the feed chain 6 is constant in order to maintain the threshing performance, so that the difference between the feed chain 6 and the feeding and conveying device 5 becomes large. When the grain culm is taken over from the feeding / conveying device 5 to the feed chain 6 in such a state, the stocker side is taken over and carried faster, so that the stocker side precedes the tip side and is carried to the feed chain 6. Go. In this way, if the rice is conveyed first on the stock side, the threshing performance becomes poor.

Therefore, in the reaping work speed detecting means 10,
When it is detected that the mowing work speed has decreased, the threshing transfer adjusting means 12 brings the distance 9 between the feeding / conveying device 5 and the feed chain 6 close to each other, and when the grain culm is transferred to the feed chain 6, the tip side is gripped more. To do so. As a result, the position held by the feed chain 6 with respect to the tip of the grain culm is shortened, so that the influence of the moment due to the driving speed of the feed chain 6 is reduced and the leading degree on the stockholder side is reduced.

[0010]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows a combine equipped with an embodiment of the present invention. On the chassis 2 having the traveling device 1, the grain stalks mowed by the mowing device 4 provided in front of the chassis 2 are transferred to the feed chain 6 via the stock origin carrier device 3 and the supply carrier device 5. A threshing device 7 for performing threshing selection while being transported by, a grain tank 16 for temporarily storing the grains threshed and selected by the threshing device 7, and an operation seat 17 are mounted, respectively.

When performing a mowing and threshing operation with such a combine, power from the engine is transmitted to the traveling device 1 to move the combine forward, whereby the planted culm is cut by the mowing device 4. The cut grain culm is conveyed rearward by the stock-source conveying device 3 and taken over by the starting end of the supply-conveying device 5. The grain culm which has been taken over by the supply / conveyance device 5 is further conveyed to the rear and taken over by the starting end portion of the feed chain 6 of the threshing device 7. Further, the grain culms are sandwiched by the feed chain 6 and transported to the rear side for threshing, and the threshed culms are cut and bound by a working machine such as a cutter or knotter at the rear side and discharged to the outside of the machine. .

[0012] In order to thresh the grain culms while being conveyed by the feed chain 6 of the threshing device 7, it is necessary to thresh with an appropriate handling depth as shown in FIG. That is, when the grain culm is too close to the working position side of the handling cylinder 18, a deep handling state occurs and a lot of straw waste is generated, and the grain culm is too close to the non-working position side (feed chain side) of the handling barrel 18. And it will be in a shallow handling state, and unhandled will occur. In order to prevent such a state, the feeding and conveying device 5 is provided with the tip detecting means 11a and 11b, and the take-over adjusting means 15 is provided so that the tip of the grain culm may pass between the tip detecting means 11a and 11b. At
The transfer interval 8 between the stock transfer device 3 and the supply transfer device 5 is adjusted. That is, when the length of the grain culm is short, the supply / conveyance device 5 is brought closer to the stock source transport device 3 to reduce the distance of the takeover interval 8 so that the starting end of the supply / conveyor device 5 is the grain cultivar. Try to hold your side. When the grain culm has a long length, the supply / conveyance device 5 is set to the stock source conveyance device 3
And the distance of the take-over interval 8 is lengthened so that the starting end of the supply / conveyance device 5 holds the tip side of the grain culm. As a result, the grain culms are threshed with an appropriate depth. The takeover adjusting means 15 is a motor that moves the supply / conveyance device 5 up and down about a vertical rotation fulcrum 20.

However, when the length of the grain culm is extremely short, it is not possible to deal with it even if it is as described above, and unhandled remains occur. Therefore, the threshing transfer interval 9 between the terminal end of the feeding and conveying device 5 and the starting end of the feed chain 6 can be changed. In other words, a rotation fulcrum 19 is provided at the front of the supply / conveyance device 5, and the threshing transfer adjusting means 12 causes the entire supply / conveyance device 5 to rotate about the rotation fulcrum 19. The threshing transfer adjusting means 12 is a motor that moves the supply / conveyance device 5 in the left-right direction.

The rotation structure of the feeding and conveying device 5 will be described with reference to FIG. 3A is a perspective view of the drive transmission path of the supply / conveyance device 5, and FIG. 3B is a sectional view. The power input to the pulley 26 is changed in speed in the case 28 and is output from the shaft 27 again. The power of the shaft 27 drives the shaft 30 via the shaft 29. The shaft 30 drives a transport chain 31 that clamps and transports the root side of the grain culm and a transport lug 32 that transports the tip side of the grain culm. When the take-over adjusting means 15 (motor in this embodiment) is rotated, the supply / conveyance device 5 is rotated with the shaft 27 as the vertical rotation fulcrum 20. Thereby, the take-over interval 8 can be adjusted. Further, when the threshing transfer adjusting means 12 (motor in this embodiment) is rotated, the supply / conveyance device 5 is rotated with the shaft 30 as the rotation fulcrum 19. With this, the threshing transfer interval 9 can be adjusted.

As described above, since the threshing transfer interval 9 between the terminal end of the feeding and conveying device 5 and the starting end of the feed chain 6 can be changed, it is possible to cope with an extremely short grain culm. That is, the cutting operation detecting means 13 for detecting that the cutting operation is being performed, and the amount of movement of the starting end portion of the supply / transport device 5, that is, the distance between the supply / transport device 5 and the stock source transfer device 3, are detected. The moving amount detecting means 14 is provided, and the reaping operation detecting means 13 detects that the reaping operation is being performed, and the moving amount detecting means 14 takes over between the supply transport device 5 and the stock yuan transport device 3. When the shortest interval 8 is detected and neither the tip detection means 11a, 11b detects a grain culm, the harvested grain culm is in an extremely short state. To do. As a result, the tip portion of the extremely short grain culm is located closer to the handling cylinder 18 of the threshing device 7, and the amount of unhandled residue is reduced.

The reaping operation detection means 13 is a reaper 4
Alternatively, a grain culm sensor provided on the grain culm conveying path from the reaping device 4 to the threshing device 7 may be used, or a position sensor may be provided in a reaping clutch lever (not shown) that drives the reaping device 4, and The entering state may be detected. In short, it can be anything as long as it can detect that the reaping work is in progress. Further, the movement amount detecting means 14 has a configuration in which a position sensor is provided at the vertical rotation fulcrum 20 of the supply / conveyance device 5 to detect the distance of the takeover interval 8. However, as another method, the supply / conveyance is performed. A transmitter and a receiver of an ultrasonic sensor may be installed in either one of the device 5 and the stock carrier 3, and the distance may be directly detected. The tip detectors 11a and 11b are contact sensors, and are configured to rotate when a grain culvert comes into contact therewith to notify the presence of the grain culm.

As described above, since it is possible to change the threshing hand-over interval 9 between the terminal end of the feeding and conveying device 5 and the starting end of the feed chain 6, it is possible to thresh even an extremely short grain culm. In a normal mowing and threshing operation, the feeding speed of the feeding and feeding device 5 is set to be faster than the feeding speed of the feed chain 6. This is because when the grain culm is handed over from the feeding / conveying device 5 to the feed chain 6, when the grain culm is handed over to the feed chain 6, the tip portion is simply placed on the entrance of the threshing device 7, so that the resistance is reduced. Therefore, the delivery of the tip portion is delayed.
In this way, if the tip portion is delayed and conveyed at the root side of the plant, there is a problem that the grain attached to the grain culm cannot be completely threshed. For this reason, since it is necessary to slow down the transport speed on the stock side, the transport speed of the feed chain 6 is slowed down. The conveying speed of the feed chain 6 which is driven slowly is always constant and is not variable. If the feed speed of the feed chain 6 is constant,
Since the rate at which the handling cylinder 18 acts on the grain culm is constant, good threshing can be performed. Therefore, the feed chain 6
Drives at a slower speed than the feeding and conveying device 5, and
It is driven at a constant speed.

However, when performing a mowing operation, the combine is not always operated at a constant speed. For example, in the case of lodging cutting when the harvested culm is falling,
The combine harvester 4 is provided with the stock carrier transport device 3 in association with the combine traveling at low speed.
Then, the drive speed of the supply / conveyance device 5 is also reduced. Depending on the field conditions, it may be slower than the drive speed of the feed chain 6. This is because the felled grain culm is surely caused by the cutting device 4 and is surely conveyed. At this time, the feed chain 6 and the handling cylinder 18
The drive speed of the threshing device 7 composed of, etc. does not decrease. This is to maintain the threshing performance as described above.

As described above, when the driving speed of the supply / conveyance device 5 becomes lower than the driving speed of the feed chain 6, the following problems occur. As described above, when the grain culm is handed over from the terminal end of the feeding / conveying device 5 to the starting end of the feed chain 6, the tip portion is simply placed on the inlet of the threshing device 7, which causes resistance. Delivery of the tips is delayed. Under such a circumstance, when the feeding speed of the feed chain 6 is higher than the feeding speed of the supply / conveyance device 5, the tip end side of the grain culm is more and more delayed, and the grain is transferred. The root side of the culm is bounced off by the conveying moment of the feed chain 6, and the whole grain culm moves to the working position side of the handling cylinder 18 of the threshing device 7, resulting in a deep handling state.

Therefore, when the combine harvester performs the harvesting work at a low speed in overcrop cutting or the like, the harvesting work speed detecting means 10 detects the traveling speed of the combine harvester, and when the combiner speed is less than a certain speed, the threshing transfer adjusting means. 12, the supply / conveyance device 5 is rotated about the rotation fulcrum 19,
The end portion of the supply / conveyance device 5 and the start portion of the feed chain 6 are brought close to each other. This reduces the above-mentioned problems.

FIG. 4 shows the electrical configuration described above.
On the input side of the approach adjusting means 101, the cutting work speed detecting means 10, the cutting work detecting means 13, the tip detecting means 11a,
11b and the movement amount detecting means 14 are connected, and the threshing transfer adjusting means 12 is connected to the output side thereof. The reaping work speed detecting means 10 may be detected by a vehicle speed sensor directly attached to the mission case 21, or by detecting the rotation speed of the transmission system of the reaping device 4, the stock carrier device 3, and the supply carrier device 5. May be.

Further, as described above, in order to cope with an extremely short grain culm, the feeding / conveying device 5 is rotated in a direction away from the feed chain 6 around the rotation fulcrum 19 to perform the mowing work. When both the cutting work detection means 13 (grain culm sensor) no longer detect grain culm, that is, when the cutting work is interrupted, the supply / conveyance device 5 is automatically returned to the original position. Thereby, when the reaping work is restarted, in the case of a long grain culm, it can be dealt with by adjusting the take-over interval 8 between the stock origin carrier 3 and the supply carrier 5, and
A short grain culm can be dealt with by adjusting the threshing transfer interval 9 between the feeding and conveying device 5 and the feed chain 6. That is, when the work is resumed, it is possible to cope with long culms and short culms.

As another embodiment, the cutting clutch lever 22
Is cut, that is, when the mowing threshing work is interrupted,
The supply / conveyance device 5 may be configured to automatically return to the original position. Next, the tip sensors 23a and 23b installed at the entrance of the threshing device 7 will be described. At the entrance of the threshing device 7, the tip sensors 23a and 23b are installed in order to grasp the state of the handling depth of the grain culm that is thrown into the threshing device 7 again. The state in which the tip portion of the grain culm passes between the tip sensors 23a and 23b is the best handling depth. As described above, even if the takeover interval 8 and the threshing takeover interval 9 are adjusted so that the handling depth becomes appropriate, the takeover interval 8 and the threshing takeover interval 9 may not be properly adjusted due to some trouble. .

Therefore, even when the takeover interval 8 and the threshing takeover interval 9 are adjusted as described above, when the tips do not pass between the tip sensors 23a and 23b, the detection results of the tip sensors 23a and 23b are given priority. Then, the threshing transfer adjusting means 12 is controlled to adjust the threshing transfer interval 9. As a result, since the handling depth of the grain culm can be reconfirmed at the entrance of the threshing device 7, threshing can be performed at an appropriate handling depth.

Next, the manual switches 24a and 24b provided on the operation seat 17 will be described. Manual switch 24
Reference characters a and 24b are switches for manually adjusting the threshing transfer interval 9. This switch has priority over the adjustment of the threshing transfer interval 9 by the automatic control, and when the manual switch 24a is pressed, the end portion of the feeding / conveying device 5 moves in the direction away from the start end portion of the feed chain 6, When the manual switch 24b is pressed, the end portion of the feeding / conveying device 5 moves in a direction of approaching the start end portion of the feed chain 6. In this way, the threshing transfer interval 9 is manually adjusted when there are many weeds in the field. When there are many weeds, the tip detecting means 11a and 11b and the tip sensor 23.
There is a case where a and 23b are erroneously sensed and the proper handling depth is not obtained, so that the operator manually adjusts by visually seeing. As a result, even in a field where there are many weeds, an appropriate handling depth can be obtained manually. Further, if the manually adjusted mark 25 is installed at the entrance of the threshing device 7 and the tip of the grain culm passes between the marks 25, the manual adjustment becomes easy.

With the above-mentioned structure, when the grain culm is taken over from the terminal end of the feeding / conveying device 5 to the starting end of the feed chain 6, it is possible to prevent the stockholder from leading, and thus to reduce the threshing performance.

[0027]

Since the present invention is configured as described above, when the end portion of the feeding / conveying device 5 is taken over by the starting end portion of the feed chain 6, the feeding speed of the feeding / conveying device 5 becomes slower, and the feeding chain 6 and Even if there is a large difference in the conveying speed of the grain, the position on the side of the stock held by the feed chain 6 with respect to the tip portion of the grain culvert becomes closer to the tip portion. The influence of the moment is lessened, and the leading stock owner is reduced in the transportation of grain culms. As a result, it is possible to prevent the threshing performance of the threshing device 7 from decreasing.

[Brief description of drawings]

FIG. 1A is a side view of a combine, and FIG. 1B is a plan view of the combine.

FIG. 2 is a front view of a threshing device.

FIG. 3A is a perspective view and FIG.

FIG. 4 is a block diagram.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 traveling device 2 chassis 3 stock carrier device 4 cutting device 5 supply carrier device 6 feed chain 7 threshing device 8 takeover interval 9 threshing takeover interval 10 cutting work speed detection means 11a tip detection means 11b tip detection means 12 threshing adjustment means 13 Mowing work detecting means 14 Moving amount detecting means 15 Transfer adjusting means 16 Glen tank 17 Operating seat 18 Handle barrel 19 Rotating fulcrum 20 Vertical fulcrum fulcrum 21 Mission case 22 Cutting clutch lever 23a Ear tip sensor 23b Ear tip sensor 24a Manual switch 24b Manual switch 25 Mark 26 Pulley 27 Shaft 28 Case 29 Shaft 30 Shaft 31 Transport chain 32 Transport lug 101 Approach adjusting means

Claims (1)

[Claims] 1. In front of a chassis 2 having a traveling device 1,
Stock-source transporting device 3 that transports the cut grain culm backward
A harvesting device 4 and a supply transporting device 5 that carries over the grain culm transported from the stock transporting device 3, and further, on the chassis 2, the grain transported from the supply transporting device 5. The culm is taken over by the feed chain 6, and a threshing device 7 for threshing selection is provided while conveying the culm to the rear by the feed chain 6, and the tip detecting means 11a and 11b are used to start the start end portion of the supply conveying device 5 and the stock source conveying device 3. Handover adjusting means 15 for changing the handoff interval 8 with the terminal end portion.
A combine provided with a cutting operation detecting means 13 for detecting a cutting operation state, a movement amount detecting means 14 for detecting an amount of movement of a starting end portion of the feeding / conveying device 5, and a feeding / conveying device 5.
Threshing hand-over adjusting means 12 for changing the threshing hand-over interval 9 between the trailing end portion and the starting end portion of the feed chain 6, and the cutting work speed detecting means 1 for detecting the cutting work speed of the traveling device 1.
0 and an approach adjusting means 101 for changing the threshing transfer adjusting means 12 to the interval approaching side in connection with the detection of the mowing work speed detecting means 10 at a constant speed or less. apparatus.