JP2002000049A - Threshing part structure of combine harvester - Google Patents

Abstract

PROBLEM TO BE SOLVED: To smoothly and surely take in grains from a first threshing cylinder to a second threshing cylinder. SOLUTION: The rotating speed of the second threshing cylinder is set so that the peripheral speed thereof is higher than that of the first threshing cylinder.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure for a threshing unit of a combine.

[0002]

2. Description of the Related Art Conventionally, as one form of a combine, cylindrical first and second handling cylinders having substantially the same outer diameter are arranged in a handling room with their rotation axes parallel to each other in the left-right direction, and ,
At the same time, it is arranged at an interval in the front and rear, and both handling cylinders are rotatable so as to face each other. Threshing is performed while transferring the grain culm from one end of the first handling cylinder to the other end. Further, the cereal culm is delivered to one end of the second handling cylinder located immediately behind the other end of the first handling cylinder, and the cereal culm is transferred to the other end of the second handling cylinder from one end of the second handling cylinder. There is one in which threshing is performed while being transferred to the side end side.

[0003]

However, in the above-mentioned combine, since the rotation speeds of the first and second handling cylinders are substantially the same, the grain culm is transferred from the first handling cylinder to the second handling cylinder. At the time, the grain culm transferred from the first handling cylinder to the second handling cylinder is bounced off the second handling cylinder, and the grain culm is often not reliably transferred to the second handling cylinder. However, there is a problem that the threshing efficiency cannot be kept good. In addition, there is a problem that the grain stalk stagnates between the two handling cylinders and is likely to be clogged, thereby lowering the threshing processing efficiency.

[0004]

Therefore, according to the present invention, in a handling room, cylindrical first handling cylinders and second handling cylinders having substantially the same outer diameter are respectively arranged with their rotation axes parallel to the left and right directions. And, while being arranged with an interval in front and rear, both handling cylinders are made rotatable to face each other, and while transferring the grain stalk from one side end side of the first handling cylinder to the other side end side. Threshing, and
The grain culm is transferred to one end of the second handling cylinder located immediately behind the other end of the first handling cylinder, and the grain culm is placed on the other end of the second handling cylinder from the one end. A threshing unit structure for a combine, characterized in that the rotation speed is set so that the peripheral speed of the second handling cylinder is higher than that of the first handling cylinder, in the combine that performs threshing while being transferred to the side. Is what you do.

[0005] The present invention is also characterized by the following configuration.

The rotation speed of the second handling cylinder is synchronized with the moving speed of the body.

[0007] The rotation speed of the first handling cylinder and the second handling cylinder can be changed according to the amount of the harvested grain.

[0008]

Embodiments of the present invention will be described below.

[0009] That is, the combine according to the present invention has, as a basic structure, a cylindrical first handling cylinder and a second handling cylinder having substantially the same outer diameter in a handling room, and their rotation axes are respectively parallel to the left and right directions. And at the same time, they are arranged at an interval in the front and back, and both handling cylinders are opposed to each other so as to be rotatable.
The threshing process is performed while being transferred from one side end of the handle cylinder to the other end side, and further, the grain culm is located on one side of the second handle cylinder located immediately behind the other end of the first handle cylinder. The husk is transferred to one end, and threshing is performed while transferring the cereal stem from one end of the second handling cylinder to the other end.

As a characteristic structure, the second handling cylinder is
The rotation speed is set so that the peripheral speed is higher than that of the first handling cylinder.

Further, the rotation speed of the second handling cylinder is synchronized with the moving speed of the body.

Further, the rotation speed of the first and second handling cylinders can be changed according to the amount of harvested cereal stem.

[0013]

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows a general-purpose combine serving as a combine 1 according to the present invention. The combine 1 has a pair of right and left crawler-type traveling units 3 and
3, a mowing unit 4 is attached to the front end of the body frame 2 via a transport unit 5 so as to be able to move up and down, and a threshing unit 6 is disposed at a position immediately behind the transport unit 5; The swing sorting unit 7 is disposed at a position directly below the swing sorting unit 7.
A straw processing unit 8 is disposed at an upper rear portion of the pallet and immediately after the threshing unit 6.

The combiner 1 is provided with an operating section 9 at the front of the body frame 2 and at the right side of the transport section 5 and at a position immediately behind the operating section 9 and at the threshing section 6. A grain storage unit 10 is disposed immediately above the grain storage unit.
A prime mover unit 11 is provided immediately after the position 10.

The structure of each part of the combine 1 will be described below.

[Traveling Section] The traveling section 3 has a traveling frame 12 attached to a lower portion of the body frame 2 as shown in FIG.
A drive wheel 14 is interlockedly connected to a front end of the traveling frame 12, while a free wheel 15 is rotatably supported at a rear end of the traveling frame 12, and a crawler belt 16 is provided between the drive wheel 14 and the idle wheel 15. The drive wheels 14 are linked to a transmission 13 which is arranged at the front of the body frame 2 and linked to the motor unit 11. In the figure, reference numeral 17 denotes a rolling wheel.

[Mowing Unit] As shown in FIG. 1, the cutting unit 4 has a platform 18 connected to the tip of the transporting unit 5 and a transverse feed auger 19 having an axis oriented in the left-right direction inside the platform 18. The cutting blade device 20 is laid horizontally at a position immediately before the transverse feed auger 19, and a divider 21 is disposed at a position immediately before the cutting blade device 20. The scraping reel 22 is disposed via a lifting mechanism 23.

In this manner, the cereals cultivated in the field are scraped by the raking reel 22 and the root portion of the cereals is cut by the cutting blade device 20.
At step 19, the harvested cereal stems are gathered substantially at the center of the lateral feeding auger 21, and delivered to the transporting unit 5 at the rear.

[Transport Section] As shown in FIG. 1, the transport section 5 has a feeder house 24 extending in the front-rear direction attached to the front end of the body frame 2 so as to be vertically rotatable, and transports the inside of the feeder house 24. While a conveyor 25 is provided, a front transport beater 26 is rotatably suspended above the front end of the body frame 2. In the figure, reference numeral 27 denotes a lifting hydraulic cylinder for raising and lowering the feeder house 24.

In this manner, the lateral feed auger of the cutting unit 4
The grain lumps gathered by 19 are transported to the rear threshing unit 6 by the transport conveyor 25 and the front transport beater 26.

[Threshing Section] As shown in FIGS. 2 and 3, the threshing section 6 forms a handling chamber 74 at a position immediately behind the transport section 5,
The first cylindrical handling cylinder 2 having substantially the same outer diameter inside the handling chamber 74
8 and the second handling cylinder 29 are arranged at an interval in the front-back direction with the rotation axis oriented in the left-right width direction, and the receiving nets 30, 31 are located directly below the respective handling cylinders 28, 29. are doing.

On the outer peripheral surface of the first handling cylinder 28, a screw blade for laterally transporting the grain rod from the left end to the right.
A plurality of teeth 28b are attached to the screw blade 28a at intervals in the direction of extension of the screw blade 28a, and the outer peripheral surface at the right end for transferring the grain rod to the second handling cylinder 29 is provided. A plurality of plate blades 28c protrude at intervals in the circumferential direction.

On the outer peripheral surface of the second handling cylinder 29, a screw blade 29 for laterally transporting the grain rod extends from the right end to the left side.
a, a plurality of teeth 29b are attached to the screw blade 29a at intervals in the extension direction of the screw blade 29a,
On the outer peripheral surface of the left end part, a rear conveying beater 80
A plurality of plate blades 29c for transfer to the upper surface are protruded at intervals in the circumferential direction.

Here, as shown in FIG. 3, a loading path 74a communicating with the transport section 5 is formed in the front left side of the handling chamber 74, and the right end of the first handling cylinder 28 and the second handling section are formed. A delivery passage 74b is formed at a right central portion between the right end of the body 29 and a carry-out passage 74c communicating with a straw processing unit 8 described later is formed at a left rear portion.

The front transport beater 26 is positioned in the above-described loading path 74a just before the left end of the first handling cylinder 28.
The rear transport beater 80 is disposed in the above-described carry-out path 74c at a position immediately behind the left end of the second handling drum 29.

In this way, the cereal rods carried in from the carrying section 5 by the front carrying beater 26 through the carrying path 74a are:
By the action of the screw blade 28a of the first handling cylinder 28 rotating clockwise a in the right side view of FIG. 2, threshing is performed by the teeth 28b while being transferred from the left end to the right end of the first handling cylinder 28. Is done.

Thereafter, the grain rod is transferred to the right end of the second handling cylinder 29 by a plate blade 28c protruding from the right end of the first handling cylinder 28, and is counterclockwise in the right side view of FIG. Due to the action of the screw blade 29a of the second cylinder 29 rotating around b
While being transferred from the right end to the left end of 9, the threshing process is performed by the tooth handling 29b.

At this time, the grains pass through the receiving nets 30 and 31 under their own weight and fall to the swinging sorting section 7 below.

On the other hand, the waste straw is delivered to the rear transport beater 80 through the carry-out path 74c by the plate blade 29c protruding from the left end of the second handling cylinder 29, and is turned clockwise in the right side view of FIG. The wafer is conveyed to the straw processing unit 8 at the rear by the rotating rear conveying beater 80.

In such a configuration, the gist of the present invention resides in that the rotation speed of the second handling cylinder 29 is set so as to be higher than that of the first handling cylinder 28.

That is, the first handling cylinder 28 is provided with a first handling cylinder support shaft 45.
Is connected to the engine E via a first handling cylinder speed change means 46 so that the rotation speed can be changed. On the other hand, the second handling cylinder 29 connects the second handling cylinder support shaft 47 to the engine E with the second handling cylinder transmission means 48. The rotation speed can be changed via the link.

Further, as shown in FIGS. 1, 2 and 4, the first handlebar rotation speed detection sensor 49 is provided near the first handlebar support shaft 45, while the second handlebar support shaft 49 is provided. A second cylinder rotation speed detection sensor 50 is provided near 47, and a drive shaft rotation speed detection sensor 51 is provided near each drive shaft 14a, 14a of the left and right drive wheels 14, 14 provided on the traveling section 3. 51, and these sensors 49, 5
0, 51, 51 are connected to the input side of a control means 52 provided in the operation unit 9 described later, and the first side is connected to the output side of the control means 52.
The handling cylinder shifting means 46 and the second handling cylinder shifting means 48 are connected.

Further, the drive shaft rotation number detecting sensors 51, 51
, The rotation speeds of the drive shafts 14a, 14a are detected, and the first and second handle cylinder transmission means 46, 48 are controlled via the control means 52 based on the detection results. The rotation speeds of the first and second handling cylinder support shafts 45 and 47 shifted by 46 and 48 are detected by the first and second handling cylinder rotation speed detection sensors 49 and 50, respectively, and the detection results are obtained by the control means 52. , The number of rotations of the first and second handling cylinder support shafts 45 and 47 is feedback-controlled, and the first and second handling cylinders are adjusted to the moving speed (vehicle speed) of the body.
The rotation speeds of 28 and 29 are synchronized.

Here, the rotation speed of the second handling cylinder 29 is the same as that of the first handling cylinder.
The rotation speed is set so that the peripheral speed (the peripheral speed of the tooth tip of the tooth handling) increases at least by 10% or more from the rotation speed of 28.

In this manner, the first side, which is the feed side of the grain stalk,
The rotation speed of the second handling cylinder 29, which is on the intake side, is set to be higher than the rotation speed of the handling cylinder 28, and the grain is moved from the first handling cylinder 28 to the second
The handling cylinder 29 is smoothly and reliably taken in.

Accordingly, it is possible to maintain good threshing efficiency, and to prevent the occurrence of a problem that the grain stalk is stagnated and clogged between the first handling cylinder 28 and the second handling cylinder 29. Reduces the amount of dust and damaged grains,
As a result, threshing efficiency can be improved.

At this time, since the rotation speed of the first and second handling cylinders 28 and 29 is changed in synchronization with the moving speed of the machine body, that is, the harvesting speed of the grain culm, the threshing processing efficiency is improved. Can be secured.

In the present embodiment, the first handling cylinder 28 and the second handling cylinder 28
The rotation speeds of the 29 can be changed according to the amount of grain culm harvested.

That is, as shown in FIGS. 1 and 4, a cereal culm amount detection sensor 53 is provided in the feeder house 24 of the transport unit 5, and the cereal culm amount detection sensor 53 is connected to the input side of the control means 52. ing.

In this manner, the first handling cylinder 28 to the second handling cylinder 28
The first and second handling cylinders 28 and 29 can be rotated at a rotation speed adapted to the amount of harvested cereal stalk while ensuring the delivery of cereal stalks to 29, thereby improving threshing efficiency. We have ensured that it can be secured well.

[Swing Sorting Unit] As shown in FIG. 1, the swing sorting unit 7 includes an oscillating body at a position immediately below the first handling cylinder 28 and the second handling cylinder 29.
32 is arranged so as to be able to swing up and down via a swing mechanism 33. 39 is the first grain trough, 40 is the second grain trough, 41 is the first
Karamin, 42 is the second Karamin.

A first grain transport conveyor 70 extending in the left-right direction is disposed in the first grain receiving trough 39, and the first grain transport conveyor 70 extending vertically in the left end portion of the same grain transport conveyor 70. While the lower end of the conveyor 71 is connected continuously, the upper end of the conveyer 71 is connected to the grain storage unit 10 described below, and
The first grain in 39 is transported to the first grain transport conveyor 70, the deep grain conveyor 71, and the grain storage unit 10.

A second conveyor 72 extending in the left-right direction is arranged in the second grain receiving trough 40, and a reduction conveyor 73 extending in the front-rear direction is provided at the left end of the second conveyor 72.
While the rear end of the second conveyor is connected continuously, the front end of the reduction conveyor 73 is connected to the handling chamber 74, and the second kernel in the second grain receiving trough 40 is returned to the handling chamber 74. Try to thresh again.

[Straw Processing Unit] As shown in FIG. 1, the straw processing unit 8 includes a rear transport beater 80 at a position immediately behind the second handling cylinder 29.
, And a straw cutter 82 is provided at a position behind the rear transport beater 80.

The straw that has been threshed in the threshing unit 6 is subjected to the action of the rear transport beater 80 to remove the straw.
After being conveyed to 82, the straw is chopped by the straw cutter 82, and then discharged to the outside of the machine, and the straw selected by the swing sorting unit 7 is discharged to the outside of the machine by Karafu. ing. 83 is a straw cutter support shaft.

[Operating Unit] The operating unit 9 has a substantially rectangular box-shaped cabin 90 disposed at the upper center of the front end of the body frame 2 and a seat 91 disposed at the center rear of the cabin 90 in plan view. seat
A front column 92 is provided in front of the front column 91, and a steering wheel 93 and a shift lever 94 are provided at an upper end of the front column 92.

[Grain Storage Unit] The grain storage unit 10 is
8 and the Glen tank 43 is arranged just above the second handling cylinder 29,
The first grain receiving trough 39 is connected to the Glen tank 43 through a lifting conveyor 71, and the discharge auger 44 is connected to the Glen tank 43.

Then, the first grain selected by the swing sorting section 7 is stored in the Glen tank 43,
The discharge auger 44 allows discharge to the outside of the fuselage.

[Motor Unit] The motor unit 11 has an engine E disposed on the upper rear portion of the fuselage, and transmits the engine E to each power mechanism unit such as the cutting blade device 20 and the transmission 13 (not shown).
Are interlocked and linked.

By driving the engine E, each power mechanism is operated in conjunction with each other.

[0052]

According to the present invention, the following effects can be obtained.

According to the first aspect of the present invention, in the handling room,
First cylindrical cylinder and second cylindrical cylinder having substantially the same outer diameter are arranged with their rotation axes parallel to the left and right direction and spaced apart in front and back, and both cylinders face each other. To make it rotatable and threshing while transferring the grain stalk from one end to the other end of the first handling cylinder.
While transferring the grain culm from one end of the second handling cylinder to the other end of the second handling cylinder from the other end of the handling cylinder to the one end of the second handling cylinder located immediately behind the other end of the handling cylinder In the combine for threshing, the rotation speed of the second handling cylinder is set so that the peripheral speed is higher than that of the first handling cylinder.

In this manner, the first side, which is the feed side of the grain stalk,
Since the rotation speed of the second handling cylinder, which is on the loading side, is higher than the rotation speed of the handling cylinder, the grain is smoothly and reliably taken in from the first handling cylinder to the second handling cylinder.

Therefore, it is possible to maintain good threshing efficiency and to prevent a problem that the grain stalk is stagnated and clogged between the first and second handling cylinders, and the drainage can be prevented. The amount of generated dust and damaged grains can be reduced, and as a result, the threshing processing efficiency can be improved.

According to the second aspect of the present invention, the rotation speed of the second handling cylinder is synchronized with the moving speed of the body.

In this manner, since the rotation speed of the second handling drum can be changed in synchronization with the moving speed of the machine body, that is, the harvesting speed of the grain culm, the threshing processing efficiency can be ensured well. it can.

According to the third aspect of the present invention, the rotation speeds of the first and second handling cylinders can be changed according to the amount of the harvested cereal stem.

In this manner, the first and second handling cylinders are rotated at a rotation speed adapted to the amount of the harvested grain culm while the delivery of the grain stalks from the first handling cylinder to the second handling cylinder is secured well. It can be rotated, and threshing efficiency can be ensured well.

[Brief description of the drawings]

FIG. 1 is a partially cutaway left side view of a combine according to the present invention.

FIG. 2 is a right side explanatory view of a threshing unit.

FIG. 3 is an explanatory plan view of the threshing unit.

FIG. 4 is a control block diagram.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Combine 2 Body frame 3 Running part 4 Cutting part 5 Conveying part 6 Threshing part 7 Swing sorting part 8 Drainage processing part 9 Operating part 10 Kernel storage part 11 Engine part 28 First handling cylinder 29 Second handling cylinder 32 Shaking Moving body

Claims (3)

[Claims] 1. A first and second cylindrical handling cylinders having substantially the same outer diameter are arranged in a handling chamber with their rotation axes parallel to each other in the left-right direction and spaced apart in the front-rear direction. At the same time, both handling cylinders face each other so that they can rotate,
The threshing process is performed while being transferred from one side end of the handle cylinder to the other end side, and further, the grain culm is located on one side of the second handle cylinder located immediately behind the other end of the first handle cylinder. In the combine which is handed over to the end and threshed while transferring the grain culm from one end to the other end of the second handling cylinder, the second handling cylinder is more powerful than the first handling cylinder. The threshing unit structure of the combine, wherein the rotation speed is set so as to increase the peripheral speed. 2. A threshing unit structure for a combine as claimed in claim 1, wherein the rotation speed of the second handling drum is synchronized with the moving speed of the airframe. 3. The threshing unit structure of a combine according to claim 1, wherein the rotation speeds of the first and second handling cylinders can be changed according to the amount of harvested grain culm, respectively.