JP4080924B2 - Combine - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a combine, and particularly relates to a combine configured to branch and output power output from an engine to a threshing unit and a sorting unit by a power branching unit.
[0002]
[Prior art]
Conventionally, a combine is provided with a cutting part in front of a traveling machine body provided with a traveling device, and a threshing part, a sorting part, a grain transfer part, and a straw transporting part are provided at required positions on the traveling machine body, and the harvesting part cuts the harvesting part. The cereals are fed to the threshing unit, the mash and the grain threshed in the threshing unit are fed to the sorting unit, the sorting unit sorts the straw and the grain, and the sorted kernel In addition to being transferred to the grain tank by the grain transfer unit, the sorted straw is transferred to the rear of the traveling machine body and discharged by the basket transfer unit.
[0003]
And the threshing part, the selection part, the grain transfer part, and the koji transfer part are supplied from an engine provided on the traveling machine body with the power necessary for driving, and in particular, are power branching means linked to the engine. It is configured to be supplied via a power branching mission. That is, the threshing unit is configured to be driven in conjunction with the threshing unit drive shaft provided in the power branching mission, and the sorting unit is driven in conjunction with the sorting unit drive shaft provided in the power branching mission. It is configured accordingly. In order to simplify the configuration, the grain transfer unit and the koji transfer unit are configured to be interlocked with the threshing unit drive shaft or the sorting unit drive shaft to obtain and drive power (for example, Patent Documents). 1).
[0004]
[Patent Document 1]
Japanese Patent Laid-Open No. 10-28455 (FIG. 5)
[0005]
[Problems to be solved by the invention]
However, in the above-described combine, since the power to the threshing unit, the sorting unit, the grain transfer unit, and the straw transfer unit is branched and supplied by the power branching mission, an excessive load is generated in the threshing unit. When the rotational speed of the handling cylinder, processing cylinder, etc. provided in the threshing section decreases, as shown in FIG. 5, the rotational speed of the threshing section drive shaft that interlocks and connects the power branching mission and the threshing section also decreases. As a result, the rotational speed of the sorting unit drive shaft that is linked and connected via the power branching mission also decreases, and the output to the sorting unit that is linked and linked to the sorting unit drive shaft is reduced. There is a problem that the processing capacity of the system is reduced.
[0006]
In particular, a reduction in processing capacity in the sorting unit means that the grain and straw are not transferred to the rear, and there is a possibility that the grain or straw will remain in the sorting unit. It was.
[0007]
In addition, when the load in the threshing portion further increases and the engine stops urgently, clogging due to grains or straw occurs in the sorting portion, and the engine can only be restarted after removing the clogging. It was not possible, and complicated work was required.
[0008]
[Means for Solving the Problems]
Therefore, in the present invention, in the combine that outputs the power output from the engine from the power branching means to the threshing part via the threshing part drive shaft, and also outputs the power from the power branching means to the sorting part via the sorting part drive shaft . In addition, an output adjustment unit that adjusts to a predetermined output and outputs to the selection unit is provided between the selection unit drive shaft provided in the power branching unit and the output shaft provided in the selection unit, and the output adjustment unit is The load in the threshing portion is detected by a rotation sensor that detects the rotation speed of the threshing portion drive shaft, and the output shaft always outputs a constant rotation speed based on the load information signal output from the rotation sensor. The present invention provides a combine that is characterized by adjusting output to a sorting unit .
[0010]
DETAILED DESCRIPTION OF THE INVENTION
The combine of the present invention is a combine provided with a power branching mission as a power branching means for branching and outputting the power output from the engine to the threshing unit and the sorting unit, the power branching mission and the sorting unit, An output adjusting means is provided between the two.
[0011]
In other words, the power output from the power branching mission is not directly transmitted to the selection unit, but is output through the output adjusting means. The output adjusting means causes fluctuations in the power output from the power branching mission. Also, the output is adjusted to a predetermined output by the output adjusting means and output to the sorting unit is performed.
[0012]
Therefore, by always supplying constant power to the sorting unit, the sorting unit can be driven stably, and the sorting and grain sorting in the sorting unit and the transport to the back are performed reliably. It is possible to prevent clogging and grain retention from occurring in the part and causing clogging.
[0013]
In particular, when the output adjusting means is configured to control the output based on the load information signal output from the load detecting means for detecting the load generated in the threshing section linked to the power branching mission, the threshing section Real-time by reliably detecting that the output reduction from the power branching mission to the output adjusting means is caused by the load generated in the operation, and adjusting the output from the output adjusting means according to the load generated in the threshing section Therefore, the power can be more stably transmitted to the selection unit. Therefore, the sorting unit can be driven more stably, and it is possible to prevent clogging and grain retention from occurring in the sorting unit and causing clogging.
[0014]
Furthermore, when the load detection means is a rotation sensor that detects the rotation speed of the threshing portion drive shaft that interlocks and connects the power branching mission and the threshing portion, the load can be detected easily and accurately. The output amount output from the output adjusting means can be stabilized.
[0015]
【Example】
Hereinafter, embodiments of the present invention will be specifically described with reference to the drawings. FIG. 1 is a side view of a combine A according to the present invention. The combine A includes a traveling machine body 3 having a traveling device 2 composed of a pair of left and right crawlers 1, a cutting unit 5 provided in front of the traveling machine body 3 so as to be movable up and down by a single-acting hydraulic cylinder 4, and a traveling machine body 3 The threshing selection unit 6 provided on the left side in the traveling direction, the cab 7 provided in the front right side in the traveling direction of the traveling machine body 3, and the grain tank 8 provided on the rear side of the cab 7 It consists of and.
[0016]
In the harvesting unit 5, the cereals are harvested by the clipper-type cutting blade device 9 provided on the lower side of the lower frame, and the cereals harvested by the cereal transporting device 10 provided at the rear of the harvesting unit 5 are removed from the threshing selection unit 6. It is sent to Feed Chain 11. In FIG. 1, 12 is a herbaceous body.
[0017]
As shown in the skeleton diagram of FIG. 2, the threshing selection unit 6 includes a threshing unit 13 provided with a handling cylinder 13a and a processing cylinder 13b, a swinging device 14a for providing a chaff sheave (not shown) and swinging the chaff sheave. A sorting unit 14 provided with a blower 14b composed of a tang fan that generates wind, a grain transfer unit 15 provided with a first screw conveyor 15a and a second screw conveyor 15b for conveying the grain, and waste It comprises a chain 16a, a suction fan 16b, and a soot transporting part 16 provided with a waste cutter 16c.
[0018]
Then, the threshing unit 13 threshs the cereals fed by the feed chain 11, the sorting unit 14 generates a tang-like wind, separates the grains threshed in the threshing unit 13, and the cereal transfer. The part 15 feeds the grain selected in the sorting part 14 to the grain tank 8, and the straw transporting part 16 cuts the straw sorted in the sorting part 14 into a required size and discharges it behind the traveling machine body 3. is doing.
[0019]
The grains stored in the grain tank 8 are configured to be discharged through the discharge auger 17.
[0020]
Hereinafter, the power transmission system will be described in detail with reference to the skeleton diagram of FIG.
[0021]
The power for driving the combine A is supplied by an engine 18 provided between the cab 7 on the traveling machine 3 and the grain tank 8, and the main output shaft 18a of the engine 18 It is connected. The engine 18 is provided with a grain discharge drive shaft 18b, which is linked to the grain discharge drive shaft 18b and the bottom conveyor 20a provided at the bottom of the grain tank 8 and stored in the grain tank 8. It is configured to discharge grain. In FIG. 2, reference numeral 20 b denotes a vertical transfer conveyor linked to the rear end of the bottom conveyor 20 a, and is provided to feed the grains to the discharge auger 17. In FIG. 2, 20c is a clutch.
[0022]
The power branching mission 19 is provided with four output shafts. The first output shaft is a travel drive shaft 19 a that is linked to the hydraulic pump hydraulic motor type (HST type) travel drive unit 21. The second output shaft is a cutting shaft drive shaft 19b that is interlocked with the cutting shaft 22 that drives the cutting portion 5. The third output shaft is a threshing portion drive shaft 19c that is interlocked with the threshing portion 13. The fourth output shaft is a sorting unit drive shaft 19d that is interlocked with the sorting unit 14. In FIG. 2, 19e is a cutting shaft control clutch that performs on / off control of power transmission to the cutting shaft 22, and 19f is a threshing clutch that performs on / off control of power transmission to the threshing unit 13 and the sorting unit 14. is there.
[0023]
The power output via the travel drive shaft 19a is input to the HST travel drive unit 21 and the drive control of the travel device 2 is performed by the HST travel drive unit 21.
[0024]
The power output via the cutting shaft drive shaft 19b is input to the cutting shaft 22 to rotate the cutting shaft 22 and drive the cutting portion 5 via the cutting clutch 23 provided on the cutting shaft 22. Yes. Furthermore, the feed chain 11 is linked to the cutting shaft 22 so as to drive the feed chain 11. The cutting shaft 22 is linked to the cutting tuning drive shaft 24 provided in the HST traveling drive unit 21 via a one-way clutch 25 and a tuning clutch 26, and the cutting unit 5 and the feed chain 11 are linked to the traveling device 2. It is configured to be driven.
[0025]
The power output via the threshing portion drive shaft 19c is input to the handling cylinder rotation shaft 13a 'and the processing cylinder rotation shaft 13b' so that the handling cylinder 13a and the processing cylinder 13b are driven to rotate. Further, in the present embodiment, the exhaust cylinder 16a is also driven by interlockingly connecting the barrel rotation shaft 13a 'and the exhaust chain drive shaft 16a'.
[0026]
The power output via the sorting unit drive shaft 19d is input to the output adjustment unit 27, which is the main part of the present invention, and the output adjustment unit 27 performs output adjustment to output from the output shaft 28. .
[0027]
The output shaft 28 is linked directly or indirectly to the rotary fan drive shaft 14b 'of the blower 14b comprising the red fan of the sorting unit 14 and the swinging body drive shaft 14a' of the swinging device 14a of the sorting unit 14. It is connected.
[0028]
Furthermore, in this embodiment, the output shaft 28 includes a first drive shaft 15a ′ of the first screw conveyor 15a of the grain transfer unit 15 and a second drive shaft 15b of the second screw conveyor 15b of the grain transfer unit 15. 'Is linked directly or indirectly. A third screw conveyor 15c is linked to the rear end of the first screw conveyor 15a, and a fourth screw conveyor 15d is linked to the rear end of the third screw conveyor 15c, so that the grains are stored in the grain tank. 8 is configured to be fed. Further, a reduction screw conveyor 15e is interlocked and connected to the rear end of the second screw conveyor 15b so that the grains fed by the second screw conveyor 15b are returned to the sorting section and re-sorted. .
[0029]
Furthermore, in the present embodiment, the output shaft 28 is directly connected to the suction fan drive shaft 16b ′ of the suction fan 16b of the soot transporting portion 16 and the exhaust cutter drive shaft 16c ′ of the exhaust cutter 16c of the soot transporting portion 16. It is linked or indirectly linked.
[0030]
The threshing portion drive shaft 19c and the sorting portion drive shaft 19d are interlocked and connected via an interlocking shaft 29 that is driven and controlled by on / off control of the threshing clutch 19f. That is, the interlocking shaft 29 is provided with a first bevel gear 30a, a second bevel gear 30b meshing with the first bevel gear 30a is provided on the threshing portion drive shaft 19c, and the sorting portion drive shaft is connected via the connecting belt 31. 19d is interlocked to the interlocking shaft 29.
[0031]
Therefore, in the threshing portion drive shaft 19c, when the rotational speed is reduced due to the load generated in the handling cylinder 13a or the processing cylinder 13b linked to the threshing section drive shaft 19c, the rotational speed of the sorting section drive shaft 19d Will also decrease.
[0032]
In this way, when the rotation speed of the sorting unit drive shaft 19d is reduced, the output adjustment unit 27 is configured to perform output adjustment so that the output shaft 28 always outputs at a constant rotation number.
[0033]
In the present embodiment, the output adjustment unit 27 includes a drive pulley 27a provided on the selection unit drive shaft 19d serving as an input shaft to the output adjustment unit 27, and a split pulley 27b provided on the output shaft 28. And the output from the output shaft 28 is configured to be an output with a constant rotational speed by controlling the split pulley 27b. That is, the output adjustment unit 27 is a continuously variable transmission.
[0034]
Therefore, even when an excessive load is generated in the threshing unit 13, by always performing a constant output from the output shaft 28 of the output adjustment unit 27, the selection unit 14 linked to the output shaft 28, Alternatively, since the grain transfer unit 15 and the koji transfer unit 16 can be driven stably, it is possible to prevent clogging and grain retention from occurring in the sorting unit 14 and the like, thereby causing clogging.
[0035]
The control of the split pulley 27b in the output adjusting unit 27 is performed by the control unit 32 as shown in the block diagram of FIG. In FIG. 3, reference numeral 34 denotes a clutch provided between the engine 18 and the power branching transmission 19.
[0036]
In particular, in the control unit 32, based on the load information signal 33s output from the load detection sensor 33 serving as a load detection means for detecting the occurrence of a load that reduces the rotation speed of the threshing unit drive shaft 19c in the threshing unit 13. It is configured to adjust the output from the output shaft 28.
[0037]
Therefore, it is possible to reliably detect that the rotational speed of the sorting unit drive shaft 19d is reduced with the load generated in the threshing unit 13, and the output from the output adjustment unit 27 according to the load generated in the threshing unit 13 By adjusting the output, the output can be adjusted in real time.
[0038]
Moreover, when the load detection sensor 33 is a rotation sensor that detects the rotation speed of the threshing portion drive shaft 19c, a decrease in the rotation speed of the threshing portion drive shaft 19c can be easily and accurately detected regardless of the content of the load. The output amount output from the output adjusting means can be stabilized.
[0039]
FIG. 4 shows how the rotational speed of the threshing portion drive shaft 19c and the rotational speed of the sorting portion drive shaft 19d change when an excessive load is generated in the threshing portion 13 in the combine A of this embodiment. In addition, it is clear that even when the rotational speed of the threshing portion drive shaft 19c is reduced, the rotational speed of the sorting portion drive shaft 19d is hardly reduced.
[0040]
Therefore, even if an excessive load is generated in the threshing unit 13 and the engine 18 is urgently stopped, the engine 18 can be restarted only by removing the load in the threshing unit 13 part, which can improve work efficiency. it can.
[0041]
In the above-described embodiment, the output adjusting unit 27 is a continuously variable transmission using the split pulley 27b. However, the present invention is not limited to this, and an appropriate transmission may be used.
[0042]
【The invention's effect】
In the present invention, along with the power output from the engine output to the threshing section through the threshing section drive shaft from the power splitting means, the combined output to selection section through the sorting unit drive shaft from said power splitting means, the power Between the sorting unit drive shaft provided in the branching unit and the output shaft provided in the sorting unit, there is provided output adjusting means for adjusting to a predetermined output and outputting to the sorting unit, and the output adjusting unit is Selection that detects the load in the threshing portion by a rotation sensor that detects the rotation speed of the threshing portion drive shaft, and always outputs from the output shaft at a constant rotation speed based on the load information signal output from the rotation sensor. The output is adjusted to the part.
In this way, even when an excessive load is generated in the threshing unit, output adjustment to the sorting unit that always performs output with a constant rotation speed from the output shaft of the output adjustment means to the sorting unit is made, Power can be stably input to the sorting section. That is, by always supplying constant power to the sorting unit, the sorting unit can be driven stably, and the sorting and grain sorting in the sorting unit and the conveyance to the back are performed reliably. It is possible to prevent clogging and grain retention from occurring in the part and causing clogging. Therefore, even if an excessive load is generated in the threshing portion and the engine is urgently stopped, the engine can be restarted only by removing the load in the threshing portion, and the working efficiency can be improved.
[0043]
In addition, it is possible to reliably detect that a decrease in output from the power branching means to the output adjusting means occurs with the load generated in the threshing section, and the output shaft from the output adjusting means according to the load generated in the threshing section. By adjusting the output to the output, the output can be adjusted in real time. Therefore, the sorting unit can be driven more stably, and it is possible to surely prevent clogging and grain retention from occurring in the sorting unit and causing clogging.
[0044]
Furthermore, by detecting the load in the threshing part by a rotation sensor that detects the rotation speed of the threshing part drive shaft, the load generated in the threshing part can be easily and accurately detected, and the output adjusting means The amount of output output from the output shaft to the output shaft can be stabilized.
[Brief description of the drawings]
FIG. 1 is a side view of a combine according to the present invention.
FIG. 2 is a skeleton diagram of a power transmission system.
FIG. 3 is a block diagram illustrating a control mechanism.
FIG. 4 is a graph showing fluctuations in the rotational speed of the threshing section drive shaft and fluctuations in the rotational speed of the sorting section drive shaft when an overload occurs when the output adjustment section is provided.
FIG. 5 is a graph showing fluctuations in the rotational speed of the threshing section drive shaft and fluctuations in the rotational speed of the sorting section drive shaft when an excessive load occurs in the conventional combine.
[Explanation of symbols]
5 Cutting part
11 Food Chain
13 Threshing department
13a
13b Processing cylinder
14 Sorting section
14a Oscillator
14b Blower
15 Grain transfer section
15a 1st screw conveyor
15b Second screw conveyor
16 藁 Transport section
16a exhaust chain
16b suction fan
16c evacuation cutter
18 engine
18a Main output shaft
19 Power branch mission
19a Travel drive shaft
19b Cutting shaft drive shaft
19c Thresher drive shaft
19d Selector drive shaft
19e Mowing shaft control clutch
19f Threshing clutch
21 Hydraulic pump hydraulic motor type (HST type) travel drive unit
22 Cutting shaft
23 Mowing clutch
27 Output adjuster
27a Drive pulley
27b Split pulley
27c Shifting connection belt
28 Output shaft
29 Interlocking axis
30a 1st bevel gear
30b Second bevel gear
31 Connecting belt

Claims (1)

In the combine that outputs the power output from the engine to the threshing part via the threshing part drive shaft from the power branching means, and outputs to the sorting part from the power branching means via the sorting part drive shaft ,
Between the selection unit drive shaft provided in the power branching unit and the output shaft provided in the selection unit, an output adjustment unit that adjusts to a predetermined output and outputs to the selection unit is provided, and the output adjustment unit is A load at the threshing portion is detected by a rotation sensor that detects the rotation speed of the threshing portion drive shaft, and output is always performed at a constant rotation speed from the output shaft based on a load information signal output from the rotation sensor. Combine that is characterized by adjusting the output to the sorting section .

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