JPH08289645A - Reaping apparatus of combine harvester - Google Patents

Abstract

PURPOSE: To prevent the accumulation of straws and mud on a reaping apparatus by forming an empty space under a joining part for transferred culms, thereby allowing the fall of the straws and mud directly from the joining part to the field. CONSTITUTION: Culms reaped with a reaping blade of a reaping apparatus are transferred to the right or the left by a stock base transfer apparatus 3 and joined together at a joining part 21. A reaping blade driving means 9 for driving the reaping blade of the reaping apparatus and a transmission output case 11 for driving the reaping apparatus are positioned at a side free from the culm joining part 21 of the reaping apparatus by extending the driving means, etc., from a frame 10 supporting the reaping apparatus.

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 As shown in FIG. 5 of Japanese Patent Application Laid-Open No. 61-115412, a conventional combine harvesting device supports a harvesting device from the lower part of a harvesting device support frame. The frame is provided and supported over the entire lateral width direction of.

[0003]

In the above-mentioned combine harvester, the weight of the harvester is heavy, and moreover, the culms of the grain culm and the mud adhering to the grain culvert that are being conveyed fall down and the harvesting is performed. There is a drawback that the device support frame is piled up on the frame below the confluence of the harvested culms. The present invention is intended to solve such a problem.

[0004]

A combine harvester according to the present invention solves the above problems and has the following configuration. That is, in the combine harvester of the initial configuration, the harvester 4 is configured to convey the grain culms cut by the cutting blade 8 to the one side in the left-right direction by the stock carrier transporting device 3 and join the joining portion 21. The cutting blade drive means 9 for driving the cutting blade 8 of the cutting device 4 and the transmission output case 11 for driving the cutting device 4 are connected to the confluence part 21 of the grain stems of the cutting device 4.
The combine harvesting device is characterized in that it extends from the harvesting device support frame 10 so as to be located on the other side where there is no.

[0005]

When the traveling device 1 is driven to move the combine forward, the planted grain culms are cut by the cutting blade 8. The cut grain culm is sandwiched by the start end of the stock transfer device 3, conveyed to the end part, and taken over by the start end of the supply transfer device 5. The grain culm that has been handed over to the starting end of the supply and transport device 5 is
It is conveyed to the terminal end, and is further taken over by the starting end of the feed chain 6 of the threshing device 7. The grain culm taken over to the starting end of the feed chain 6 is threshed while being conveyed backward, and the culm after threshing is taken over by the rear culm chain and cut by a working machine such as a cutter or a notter. It is bound and discharged to the outside of the machine.

In the combine harvester 4 for performing such a series of harvesting and threshing operations, the harvester driving means 9 for driving the harvesting blade 8 of the harvester 4 and the transmission output case 11 for driving the harvester 4 are provided in the harvester. Confluence part 21 of the grain culm of 4
Since it extends from the reaping device support frame 10 so as to be located on the other side where there is no such space, a space part where nothing exists appears below the confluence part 21 of the grain stems.

[0007]

1 shows the front of a combine with an embodiment of the invention. Chassis 2 with traveling device 1
In front of, a mowing device 4 and a feeding and conveying device 5 are provided. The cutting device 4 has a weeding tool 12 for weeding the planted culms.
From the raising case 13 that causes the planted grain culm, the cutting blade 8 that cuts the planted grain culm, and the stock source transporting device 3 that sandwiches and transports the grain culm cut by the cutting blade 8 backward. It is configured. Further, behind the stock-source transporting device 3, there is provided a supply-transporting device 5 that takes over and transports the grain culms transported from the stock-source transporting device 3.

Since the mowing device 4 is supported by the mowing device supporting frame 10 which moves up and down about the fulcrum 15 above the traveling transmission device 16 at approximately the right and left intermediate portions thereof, the mowing device 4 is mowed. It is configured to move up and down together with the device support frame 10. Above the chassis 2, there is a threshing device 7 having a feed chain 6 for succeedingly transporting the grain culms transported from the supply and transport device 5, and a grain for temporarily storing the grains that have been threshed and sorted by the threshing device 7. A tank 14 is placed. Behind the threshing device 7, a culm chain (not shown) that takes over and conveys the culm conveyed from the feed chain 6, and cuts or binds the culm conveyed from the culm chain. A working machine (not shown) such as a cutter or a knotter is provided.

In the combine constructed as described above, when the power from the engine 18 is input to the traveling transmission device 16 to change the speed to an arbitrary speed and drive the traveling shaft 17,
The traveling device 1 is driven. Then, the combine begins to move forward. In order to perform the mowing and threshing work, power is transmitted from the engine 18 to the mowing device 4, the feeding and conveying device 5 and the threshing device 7 to drive the work. When the combine moves forward in such a state, the planted culm will have a weeding tool 12
It is sown by and is caused by the case 13 which causes it to be raised. After that, the planter side of the grain culm that has been cut off by the cutting blade 8 is sandwiched by the planter side transfer device 3a of the stocker transfer device 3 and conveyed toward the starting end portion of the rear supply transfer device 5. At the same time, the tip side of the grain culm is conveyed by the tip side conveying device 3a having a lug.

The grain culm transported to the terminal end of the stock-source transporting device 3 is taken over by the starting end of the rearward-feeding transporting device 5.
After that, the grain culm transported to the end portion of the supply transport device 5 is taken over by the start end portion of the feed chain 6 of the threshing device 7. The grain culm taken over by the feed chain 6 is threshed by the handling cylinder 19 and the net 20 while being conveyed backward. The grain that has been threshed and sorted from the grain culm is the grain tank 14
After being threshed, the culms after threshing are taken over from the end of the feed chain 6 to the beginning of a culling chain (not shown) and sent to a working machine such as a cutter or knotter for cutting or binding. Is released and released outside the aircraft.

In the combine performing such a series of operations, as shown in FIGS. 2 and 3, the grain culms cut by the cutting blade 8 are conveyed to the left and right sides by the stock source conveying device 3. A cutting blade drive means 9 for driving the cutting blade 8, a raising case 13 other than the cutting blade 8, a tip side side transfer device 3a of the stock source transfer device 3 and a stock side transfer device. The transmission output case 11 for extracting the driving force of 3b is configured to extend from the cutting device support frame 10 so as to be located on the other side where the confluence portion 21 does not exist. Therefore,
An empty space 22 is formed below the confluence 21 of the grain culms.

FIG. 3 shows details of a plan view of the mowing device 4 and the feeding / conveying device 5, in which the cut grain culm is conveyed by the stock-source conveying device 3 and transferred to the starting end portion of the supplying / conveying device 5. The merging part 21 which merges in front of is shown. In the confluence section 21 where all the grain culms gather, the grain culms come into contact with each other to generate a lot of culm due to the resistance, and the mud attached to the grain culms is also scraped off by friction. Then
Scrap and mud fall downward, but as described above, since there is nothing below the confluence portion 21, there is no space, so they immediately fall into the field scene and do not accumulate on the cutting device support frame 10.

Further, since half of the transmission output case 11 which has been conventionally used can be eliminated in the entire width direction of the mowing device 4, the weight thereof is reduced and the mowing device supporting below the confluence portion 21 of the grain stem is supported. The maintenance of the frame 10 and its vicinity can be easily performed. Next, FIG. 4 will be described.

FIG. 4 is a hydraulic circuit diagram when the cutting blade drive means 9 is hydraulically constructed. The oil pumped up by the hydraulic pump 23 rotates the hydraulic motor 25 and returns to the oil tank 26 when the valve 24 opens the circuit toward the hydraulic motor 25. An eccentric cam 28 is provided on the output shaft 27 of the hydraulic motor 25.
The upper blade 8a of the cutting blade 8 swings in the left-right direction. A lower blade 8b is provided below the upper blade 8a to swing in opposite directions.
In the so-called double-action cutting blade, the lower blade 8b is driven by the reversing gear 29.

As described above, since the cutting blade 8 is driven by the hydraulic motor 25, the transmission case for driving the cutting blade 8 is unnecessary, and the structure of the cutting frame 30 that supports the cutting device 4 is eliminated. Can be simplified. Further, since it is hydraulically driven, noise and vibration can be reduced, and even if the cutting blade 8 bites a hard object such as stone, the relief valve 31 operates,
It is possible to prevent the cutting blade 8 from being damaged. The cutting blade drive means 9 may be composed of an electric motor or the like other than hydraulic pressure.

Next, FIG. 5 will be described. In the hydraulic circuit, a pressure sensor 32 for detecting pressure is provided,
The variable diaphragm 33 is automatically adjusted in relation to the detection result of the pressure sensor 32. FIG. 6 is a block diagram of the electrical configuration, and FIG. 5 shows the relationship between the pressure value by the pressure sensor 32 and the oil flow rate value by the variable throttle 33. A pressure sensor 32 is connected to an input side of a control device 100 (hereinafter, referred to as CPU), and a variable throttle 33 is connected to an output side thereof. CPU 100 is
The pressure value is constantly detected, and when the pressure value becomes high, the flow rate is increased to move the cutting blade 8 quickly, and when the pressure value becomes low,
The flow rate is reduced to move the cutting blade 8 slowly. When varying the flow rate in response to a change in pressure, the flow rate may be changed proportionally as shown by a line 200 or may be changed stepwise with respect to a constant pressure change as shown by a line 201. However, it may be curved like the line 202.

Conventionally, the drive speeds of the mowing device 4 and the cutting blade 8 have been changed in relation to the traveling speed of the combine. The higher the traveling speed, the larger the amount of grain stalks to be mowed. Therefore, the grain stalks must be conveyed to the rear threshing device 7 as soon as possible. The slower the number, the less the amount of grain culms to be mowed, so the mowing device 4 was driven slowly depending on the speed.
The drive speed of the cutting blade 8 is also changed corresponding to the change of the drive speed of the mowing device 4.

However, for example, in a field with a large diameter of a grain culm or in horizontal cutting, the traveling speed is low, but the reaping device 4 is also driven at a low speed.
The cutting blade 8 is also driven at a low speed. In a grain culm or a horizontal cutting with a large stock diameter, the load acting on the cutting blade 8 becomes large. Therefore, when the cutting blade 8 is driven at a low speed, the cutting blade 8 loses the cutting and the state of the cut mark (stock The original cut shape) becomes bad. Further, in the case of wheat or a small amount of culm, the traveling speed is high, but then the cutting device 4 is also driven at high speed, and the cutting blade 8 is also driven at high speed. In wheat and a small amount of culm, the load acting on the cutting blade 8 is small, and if the cutting blade 8 is driven at high speed in such a case, the life of the cutting blade 8 will be shortened. Conventionally, there were such drawbacks.

Therefore, as described above, the drive speed of the mowing device 4 is changed in relation to the traveling speed, but the drive speed of the cutting blade 8 actually acts on the cutting blade 8 regardless of the traveling speed. The driving speed of the cutting blade 8 is changed in relation to the load applied. As a result, the conventional problems are eliminated. Next, the manual drive speed changing dial 34 (hereinafter referred to as dial) of the cutting blade 8 in FIG. 7 will be described. The dial 34 is installed at an arbitrary position on the operator's seat 35 of the combine, and the dial 34 is interlocked with the variable diaphragm 33 so that the operator can arbitrarily set the driving speed of the cutting blade 8. In this manual operation, a switch 36 for switching to the manual operation is provided in the vicinity of the dial 34, and the pressure sensor 3 is operated manually or as described above.
It is configured to select automatic according to 2. Further, the dial 34 and the variable diaphragm 33 may be linked with each other by a mechanical link mechanism or electrically connected. When electrically connecting, in the block diagram of FIG.
The dial 34 and the switch 36 are connected (not shown) to the input side of the U100. As a result, the operator can set the drive speed of the cutting blade 8 regardless of the traveling speed of the combine while watching the actual cutting situation.

Next, the reaping device 4 will be described with reference to FIG.
12R at the right end portion, or a weeding tool support frame 39R supporting the weeding tool 12R, or a weeding tool 12L at the left end portion, or a weeding tool supporting the weeding tool 12L The configuration is such that the grain culm sensors 37, 38 are installed on the support frame 39L. In the embodiment shown in FIG. 8, the weeding tool support frame 39R at the right end is installed. Grain sensor 37
At the time of stable cutting, the grain culm sensor 37 is installed so as not to come into contact with the grain culm, and the grain culm sensor 38 is installed so that the grain culm always comes into contact therewith. At the same time, when the grain culms are densely present in the width direction of the reaping device 4 such as horizontal cutting, the grain culm sensors 37, 3 are provided.
It is installed so that the grain culm always comes into contact with No. 8.

When the grain culm sensor 38 detects the grain culm for a certain period of time, but when the grain culm sensor 37 does not detect the grain culm, stable cutting is performed and both grain culm sensors 37 and 38 grain for a certain period of time. When detecting culms, it is horizontal cutting. This is because the line-to-line interval (interval between grain culms and grain culms) has a certain length in row cutting, but there is no line in horizontal trimming, and the distance between grain culms and grain culms is short. Because.

As described above, the variable throttle 33 in the hydraulic circuit shown in FIG. 4 is controlled regardless of the traveling speed of the combine in connection with the detection of the line cutting or the horizontal cutting by the grain culm sensors 37 and 38. . A block diagram of this control is shown in FIG. The grain culm sensors 37 and 38 are connected to the input side of the CPU 100, and the variable diaphragm 33 is connected to the output side thereof. When the CPU 100 determines that the line is to be cut, the variable throttle 33 is narrowed down to a small flow rate below a certain amount regardless of the traveling speed of the combine. As a result, the cutting blade 8 including the upper blade 8a and the lower blade 8b is driven at a low speed. In the case of strip cutting, since the load acting on the cutting blade 8 is small, by driving the cutting blade 8 slowly, the durability of the cutting blade 8 is increased, and the life of the cutting blade 8 is lengthened.
Vibration is also reduced.

Further, when the CPU 100 determines the horizontal cutting, the variable throttle 33 is opened regardless of the traveling speed of the combine so that a certain amount of oil or more is made to flow. As a result, the cutting blade 8 including the upper blade 8a and the lower blade 8b is driven at high speed. In the case of horizontal cutting, a large load acts on the cutting blade 8 even if the combine is traveling at a low speed, so it is necessary to cut the grain stalks at once with the cutting blade 8. Therefore, the cutting blade 8 does not lose the cutting, and the shape of the cut and the stock alignment are improved.

Further, when neither of the grain culm sensors 37 and 38 detects the grain culm, the reaping device 4 is not reaping the grain culm regardless of whether the combine is traveling or not, so that the upper blade 8a and the lower blade 8a are not cut. The cutting blade 8 including the blade 8b is driven at an ultra-low speed. This makes the cutting blade 8
The vibration is reduced as the life of the device is extended. Moreover, the power of the engine 18 is not wasted. As described above, the cutting blade 8 may be driven at an extremely low speed, but may be stopped.

[0025]

Since the present invention is configured as described above, since there is an empty space below the confluence part 21 of the grain culm, shavings and mud falling from the confluence part 21 are formed. Will fall directly onto the field and will not accumulate on the mowing device 4. Further, since approximately half of the mowing device supporting frame 10 supporting the mowing device 4 in the entire lateral direction of the mowing device 4 can be eliminated, the weight thereof is reduced and the transmission output case 11 is eliminated. The maintenance management of the surrounding parts becomes easy.

[Brief description of drawings]

1 is a left side view of a front portion of the combine, FIG.

FIG. 2 is a plan view of a part of the reaping device.

FIG. 3 is a plan view of a mowing device and a feeding and conveying device.

[Fig. 4] Hydraulic circuit diagram

[Figure 5] Relationship between pressure value and oil flow rate

FIG. 6 is a block diagram.

FIG. 7 is a perspective view

FIG. 8 is a plan view of a part of the reaping device.

FIG. 9 is a block diagram.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 traveling device 2 chassis 3 stock carrier device 3a tip side carrier device 3b stock carrier device 4 mowing device 5 supply carrier device 6 feed chain 7 threshing device 8 cutting blade 8a upper blade 8b lower blade 9 cutting blade drive means 10 mowing Device support frame 11 Transmission output case 12 Dividing tool 12L Left end part grass tool 12R Right end part grass tool 13 Raising case 14 Glen tank 15 Support point 16 Traveling transmission device 17 Traveling shaft 18 Engine 19 Handle barrel 20 Receiving net 21 Confluence part 22 Space Part 23 Hydraulic pump 24 Valve 25 Hydraulic motor 26 Oil tank 27 Output shaft 28 Eccentric cam 29 Reversing gear 30 Mowing frame 31 Relief valve 32 Pressure sensor 33 Variable throttle 34 Cutting blade drive speed change dial 35 Operator's seat 36 Switch 37 Grains Sensor 38 Grain culvert sensor 39L Weeding tool support frame 39 Min grass instrument support frame 100 controller (CPU) 200 line 201 line 202 line

Claims (1)

[Claims] 1. In front of a chassis 2 having a traveling device 1,
The cutting blade 8 for cutting the planted grain culm and the stock-source transporting device 3 for transporting the grain culm cut by the cutting blade 8 backward are provided with a substantially middle part of the reaping device 4 which can be moved up and down. A supply / conveyance device 5 which is supported by a support frame 10 and which conveys and conveys the grain culms conveyed from the stock origin conveying device 3.
Further, on the chassis 2, the grain stalks conveyed from the supply / conveyance device 5 are taken over by the feed chain 6,
It is a combine provided with a threshing device 7 for performing threshing selection while conveying to the rear in the feed chain 6, wherein the mowing device 4 uses the stock carrier transporting device 3 to move the grain culm cut by the cutting blade 8 to one side in the left-right direction. To be merged with the merging section 21,
The cutting blade drive means 9 for driving the cutting blade 8 of the cutting device 4 and the transmission output case 11 for driving the cutting device 4 are located on the other side where the confluence part 21 of the grain stems of the cutting device 4 does not exist. A harvesting device for a combine, which is extended from the harvesting device support frame 10.