JP2003259718A - Threshing section of general-purpose combine harvester - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a threshing section of a general-purpose combine harvester, improved in threshing performance through modifying its scheme comprising laterally disposing two rotors of the same diameter and arranging them longitudinally with respect to the machine body advancing direction. <P>SOLUTION: The threshing section has the following scheme. Receiving nets disposed under both rotors 21 and 22 are unified to make the area under the rotors 21 and 22 communicate. Both the rotors 21 and 22 are rotated in the same direction and at the same speed. Specifically, a receiving net unit 40 is constructed in a nearly U-shape with front and rear receiving nets 40A and 40C of arc shape seen sideways on both ends and a straight receiving net 40B therebetween. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure of a threshing section of a general-purpose combine in which two rotors having the same diameter are arranged in the left-right direction and are arranged side by side in the front-back direction with respect to the traveling direction of the machine body.

[0002]

2. Description of the Related Art Conventionally, a general-purpose combine has been known in which two rotors having the same diameter are arranged in the left-right direction in a threshing section and are arranged side by side in the front-back direction with respect to the traveling direction of the machine. This general-purpose combine has a mowing part protruding in front of the traveling device,
The grain culm cut by the reaping unit is conveyed backward and supplied to the threshing unit. Below each rotor, a receiving net configured in a semicircular shape in a side view is arranged along the shape of the lower side surface of the rotor, and threshing is performed by the rotation of the rotor. The threshing part has an input port arranged in front of one side of the rotor on the front side, and an output port from the threshing part is arranged behind one side of the rotor on the rear side. While being threshed by the front rotor, it is gradually conveyed to the other side and transferred from the other side portion of the front rotor to the other side portion of the rear rotor. Then, while being threshed again by the rotor on the rear side, it is gradually conveyed to one side. In other words, the rotor makes one round trip. The culms that have been shredded are discharged from one side of the rear rotor to the discharge port. Grains, straw debris, dust, etc. that leaked through the net are sorted by a sorting device installed below the threshing unit, and straw debris, dust, etc. are discharged from the rear of the fuselage, and fine grains are placed in the grain tank above the threshing unit. It was configured to be stored in.

[0003]

The above is the structure of the threshing part of the conventional general-purpose combine, and the present invention aims to improve the threshing part to further improve the threshing performance.

[0004]

[Means for Solving the Problems] Means for solving the above problems will be listed below. First, as described in claim 1, two rotors having the same diameter are arranged in the left-right direction, and in a threshing section of a general-purpose combine, which is arranged side by side in front of and behind the machine traveling direction, below the rotors. The receiving nets to be arranged are integrated so that the lower portions of both rotors communicate with each other, and both rotors are rotated in the same direction at the same speed.

Specifically, as described in claim 2, the side surface of the receiving net is formed into a substantially "U" shape by an arcuate portion at both front and rear ends and a linear portion therebetween. Constitute.

Alternatively, as described in claim 3, the receiving net is arranged in an arcuate portion at front and rear ends in a side view, and an inverted "V" -shaped portion in a side view is arranged between them.

Further, as described in claim 4, the upper end portion of the net is extended to a position higher than the center of rotation of the rotor.

As described in claim 5, a plurality of partition members are provided in the front-rear direction on the upper surface of the receiving net between the rotors at intervals in the left-right direction.

As a result, the rotation speed of the front rotor is made higher than the rotation speed of the rear rotor.

Alternatively, as described in claim 7, the rotation speed of the rotor on the rear side is set higher than the rotation speed of the rotor on the front side.

Further, as described in claim 8, one of the two rotors having the same diameter is configured to have a larger diameter than the other.

Further, as described in claim 9, a rotation processing body is arranged at a front-rear intermediate position between the both rotors.

Then, as described in claim 10, the rotation processing body is rotated in the same direction as the both rotors.

Alternatively, as described in claim 11, the rotation processing body is rotated in a direction opposite to that of the both rotors.

Further, as described in claim 12, two rotors having the same diameter are arranged in the left-right direction, and both rotors are provided in the threshing section of the general-purpose combine, which are arranged side by side in the front-back direction with respect to the traveling direction of the machine body. The receiving nets arranged below are integrated so that the lower parts of both rotors communicate with each other, and both rotors rotate in opposite directions.

Further, as described in claim 13, the input port to the threshing portion is arranged in front of one side portion of the front rotor, and the discharge port from the threshing portion is arranged to the other side portion of the rear rotor. Place it in the rear.

Alternatively, as described in claim 14, the input port to the threshing part is arranged in front of one side part of the front rotor, and the discharge port from the threshing part is arranged to one side part of the rear rotor. Place it in the rear.

[0018]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a left side view showing the general configuration of a general-purpose combine 1, FIG. 2 is a left side view of a threshing unit 18 according to the first embodiment, FIG. 3 is a plan view of the same, and FIG. 4 is a threshing unit according to the second embodiment. 18 is a left side view, FIG. 5 is a left side view of the threshing unit 18 according to the third embodiment, FIG. 6 is a left side view of the threshing unit 18 according to the fourth embodiment, and FIG. 7 is a threshing according to the fifth embodiment. Part 1
8 is a left side view of the threshing section 18 according to the sixth embodiment, FIG. 8 is a left side view of the threshing section 18 according to the seventh embodiment, and FIG. 10 is a threshing section according to the eighth embodiment. 11 is a plan view of the portion 18, FIG. 11 is a left side view of the threshing portion 18 according to the ninth embodiment, FIG. 11A is a diagram in which the ceiling height of the threshing portion 18 is low, and FIG. It is the figure which constituted the ceiling height of section 18 high. 12 is a left side view of the threshing unit 18 according to the twelfth embodiment, FIG. 13 is a left side view of the threshing unit 18 according to the thirteenth embodiment, and FIG. 14 is a left side view of the threshing unit 18 according to the fourteenth embodiment. FIG. 15 is a plan view of the same, FIG. 16 is a left side view of the threshing unit 18 according to the fifteenth embodiment, and FIG. 17 is a plan view of the same.
8 is a left side view of the threshing unit 18 according to the 16th embodiment, FIG.
22 is a left side view of the threshing unit 18 according to the 17th embodiment, FIG. 20 is a left side view of the threshing unit 18 according to the 18th embodiment, and FIG. 21 is a plan view of the threshing unit 18 according to the 19th embodiment. Is the 20th
23 is a plan view of the threshing unit 18 according to the embodiment, FIG. 23 is a left side view thereof, FIG. 24 is a plan view of the threshing unit 18 according to a twenty-first embodiment, FIG. 25 is a left side view thereof, and FIG. 26 is a twenty-second embodiment. It is a top view of the threshing part 18 which concerns.

First, the threshing section 18 has two rotors 2
A schematic configuration of a general-purpose combine in which 2 is arranged laterally will be described with reference to FIGS. 1 to 3. The machine frame 13 is mounted on the crawler type traveling device 1, and the sorting device 19 and the threshing unit 18 are mounted on the machine frame 13.
And an engine room 49 accommodating the engine 48 and the like is placed and fixed, a grain tank 30 is arranged on the threshing section 18, and a side portion of the grain tank 30 discharges the grains stored therein. An auger 39 is arranged. Further, the reaper 8 is projected forward of the machine frame 13. The reaper 8 stores the transverse feed auger 3 in the platform 2 in the left-right direction, and drives the rotation to drive the culms to gather in the substantially left-right center. A cutting blade 4 is provided laterally below the front end of the platform 2, and a take-up reel 5 is arranged above and above the cutting blade 4. The rear part of the lifting link 6 is pivotally supported on the rear parts of both sides of the platform 2, the take-up reel 5 is rotatably supported at the front end of the lifting link 6, and the take-up reel 5 is rotationally driven by a hydraulic motor or the like. It Further, a weeding plate 7 is arranged at the front ends of both sides of the platform 2.

A carrying device 9 is arranged between the mowing section 8 and the threshing section 18, and the carrying apparatus 9 is provided in the feeder house 10.
A conveyor 11 is housed therein, and the front end of the feeder house 10 is communicated with the rear end of the platform 2 slightly to the left of the left and right with respect to the advancing direction in accordance with the feed end position of the screw blade of the transverse feed auger 3. There is. The rear end of the feeder house 10 has an inlet 7 for the threshing section 18.
A cylindrical beater 33 having a horizontal axis of rotation in the left-right horizontal direction is disposed in front of the input port 70, and the grain culms are forcibly sent to the threshing section 18.
The rear part of the feeder house 10 is supported by a machine frame 13 so as to be vertically rotatable. And feeder house 10
An unillustrated hydraulic cylinder is interposed between the lower surface of the cutting machine and the machine frame 13 so that the cutting section 8 can be moved up and down. Further, above the feeder house 10 and the beater 33, there is a cabin 1 in which a driver's seat 15, a steering handle 16 and the like are housed.
7 is arranged and the cabin 17 is arranged at an upper position in front of the left and right center of the airframe to improve the visibility, make it easy to confirm the reaping work, and get on and off from both the left and right sides.

Further, the feeder house 10 and the beater 3
3 and the input port 70 to the threshing unit 18 are arranged on the left side in the traveling direction of the machine body, and the discharge port 75 from the threshing unit 18 is arranged on the right side. The threshing unit 18 is the first
The rotor 21, the second rotor 22, the net-receiving unit 40, and the like are provided, and the first rotor 21 and the second rotor 22 are arranged in parallel in the front-rear direction with their axes oriented in the horizontal direction. The receiving net unit 40 is arranged so as to cover the lower portions of both rotors 21 and 22, and the front left net 40A constituting the receiving net unit 40 is cut out to form the inlet 70. The discharge port 75 is formed by cutting out the right rear portion of the rear net 40C. In such a configuration, when the harvested culm is sent from the feeder house 10 to the input port 70 of the threshing unit 18, the first rotor 21 and the second rotor 22 rotate to shed grain while being conveyed, and the discharge port 75. Is more dropped.

A guide plate 60 extends rearward and downward from the lower portion of the discharge port 75, and the culms are forcibly sent backward to a position between the upper rear portion of the guide plate 60 and the bottom surface of the engine room 49. A culm beater 61 is provided. The culm beater 61 has a smaller outer diameter than the outer diameters of the rotors 21 and 22 and has a compact and easy-to-assemble shape. The rotation speed of the culm beater 61 is faster than the rotation speed of the second rotor 22. The peripheral speed of the beater 61 is the rotor 2
The speed is equal to or higher than 1.22, and the performance to send the culms backward is enhanced.

The culm discharged from the discharge port 75 is conveyed rearward by the culm beater 61, and is taken into the suction fan 62 behind the culm beater 61, and laterally across the entire width at the rear end of the machine. Chipper spreader 63 mounted
And is cut by a plurality of blades of the spreader 63 and discharged to the field from the rear end of the machine body.

Below the threshing section 18, a sorting device 1 is provided.
9 are arranged, and the structure is such that the swinging body 50, the Karako 27 that generates the sorting wind, the No. 1 conveyor 28 that conveys the sorted No. 1 item in the left-right direction, and the No. 2 conveyor 31 that conveys the No. 2 item. Etc., so that the threshing grains dropped from the threshing unit 18 can be selected.

The first conveyor 28 and the second conveyor 3
1 is laterally installed in the rear of the crawler type traveling device 1 in a side view, and communicates with the left end of the 1st conveyor 28 and is a bucket type fried grain conveyor 29 or 2nd conveyor 3 which is arranged in an upright state.
1 has an efficient layout so that the return conveyor 32, which is connected to the left end portion of 1, does not interfere with the crawler type traveling device 1.

Furthermore, the sorting device 19 is a machine frame 13
It is housed between the front, rear, middle, and rear of the sorting machine 19, and between the front of the machine frame 13 in front of the sorting machine 19 and the rear lower position of the feeder house 10, a transmission drive mission device (not shown) can be arranged. As a good layout, the total length can be shortened.

The swinging body 50 includes the first rotor 21.
It is arranged from below the front end to the rear end of the sorting device 19 and is swingably supported by a swing link mechanism. A grain pan 50a is formed in the front part of the swing body 50 to receive the grain removed below the first rotor 21 and the second rotor 22. The Glen Pan 5
0a is formed in a wavy shape in a side view, and swinging of the swinging main body 50 conveys grain removal backward.

A sieve line 52 is arranged continuously at the rear end of the Glen pan 50a. From below the sieve line 52 to the rear end portion of the swinging body 50, a chaff portion composed of a plurality of chaff fins which are laterally bridged in the width direction of the swinging body 50 is arranged. An unillustrated drop opening is opened on the bottom surface of the swinging body 50 below the chaff portion, and is covered with a crimp net.

The Glen pan 50 of the swing body 50 is also used.
Kara 27 is horizontally provided below the front and rear part of a, and the sorting wind is sent backward according to the guide, and the swinging main body 5 is fed from the falling port or the like.
The sorting air is blown into 0, and the chaff section performs specific gravity sorting and wind sorting to sort the grain-free grains into the first grain and the second grain.

That is, the grain-removing grains, such as grains and straw debris, dropped from the receiving net unit 40 of the first rotor 21 and the second rotor 22 are received on the Glen pan 50a of the swinging main body 50 and moved backward. It is conveyed, bounced backward from the rear part of the Glen pan 50a along the sieve line 52, and dropped to the chaff part as it is for specific gravity selection and wind selection.

The No. 1 product drops the most on the gutter, is sent to the right by the No. 1 conveyor 28, and is stored in the Glen tank 30 via the fried grain conveyor 29. The No. 2 product that has passed through the sieve line 52 and dropped onto the No. 2 gutter and again from the No. 2 conveyor 31 via the reduction conveyor 32 to the Glen pan 50.
Reduced onto a and re-sorted. The above is the general configuration of the general-purpose combine, and next, regarding the configuration of the threshing unit 18,
Several alternative embodiments will be described.

First, a first embodiment of the threshing unit 18 will be described. As shown in FIGS. 2 and 3, the threshing unit 18 includes a first rotor 21, a second rotor 22, a net receiving unit 40, etc., and is housed in the upper part of the machine frame 13.
The first rotor 21 and the second rotor 22 have the same diameter, and the axes thereof are oriented in the horizontal direction in the left-right direction and arranged in parallel in the front-rear direction. Screw blades 21a and 22a having a plurality of handling teeth are provided on the outer circumference of the rotors 21 and 22, and are arranged spirally in the right-hand screw direction from the left end portion toward the right side portion.

The net-receiving unit 40 is composed of arc-shaped nets 40A and 40C in a side view and a straight net 40B. The net 40A is arranged in front of and below the first rotor 21. The first rotor 21 is concentric with the first rotor 21 and covers approximately one quarter of the lower front side. The receiving net 40B is arranged below both rotors 21 and 22, and is arranged in parallel with the lower tangent line of the first rotor 21 and the second rotor 22.
Is disposed below and rearward of the second rotor 22, and has a configuration in which it is concentric with the second rotor 22 in a side view and covers approximately one quarter of the lower rear side. The receiving net unit 40 in which these are continuously combined as one is formed in a substantially "U" shape in a side view, and the lower portions of both rotors 21 and 22 are connected to each other in the front-rear direction.

With such a structure, conventionally, each rotor 21.
Costs can be reduced by integrating the side-view semicircular receiving nets, which are provided separately below 22, respectively, to simplify the structure. Further, in the receiving net unit 40 having this configuration, the harvested culm has an arcuate receiving net 40A (or 4).
0C), the rotor 21 (or 22) is thrown in the tangential direction of the outer periphery of the rotor 21 (or 22) along the receiving net 40B by the centrifugal force of the rotor 21 (or 22).
Smooth delivery of grain culm between them. Further, in this configuration, one rotor is arranged in the left-right direction, and a semi-circular receiving net in side view having a net receiving area similar to that of the net receiving unit 40 is provided below the rotor. The height of the threshing portion can be made lower than that of the threshing portion arranged, the vehicle height can be suppressed to be low, and the stability is improved. Further, in the threshing part in which the rotor having the axial center is arranged in the front-rear direction, the threshing part becomes long in the front-rear direction. However, in the threshing part 18 having the rotors 21 and 22 having the left and right shafts in this way, the threshing part 18 can be shortened in the front-rear direction. Therefore, the engine room 49 can be provided by utilizing the space above the rear portion of the sorting device 19, and the layout can be efficiently performed. The first rotor 21 and the second rotor 22
Is rotated at the same speed in the same direction (counterclockwise in the left side view in the traveling direction shown in FIG. 1) so that the grain culms are smoothly passed between the rotors 21 and 22 and transported. Has been done.

The upper part of the threshing section 18 is covered with a rotor cover 36, and the front and rear portions 36a, 36a of the rotor cover 36 are configured to be openable and closable, so that the inside of the threshing section 18 can be maintained. On the inner peripheral surface of the horizontally shaped upper portion of the rotor cover 36, both rotors 21 and 22 are
.. are provided at appropriate intervals in the left-right width direction. The dust delivery valves 56, 56 ...
The longitudinal direction of is substantially oriented toward the rotational orbital direction of the screw blades 21a and 22a on the outer peripheral surfaces of the rotors 21 and 22. .. are attached to the rotor cover 36.
The upper part is rotatably supported about a vertical rotation fulcrum, and by rotating the dust-sending valves 56, 56 ..., the grain culm is moved to the first rotor 21 and the second rotor. It is possible to adjust the time to move inside 22 according to the variety of the culm and the state of the culm, and the threshing unit 18 having versatility adapted to various varieties and the like is configured.

Further, the screw blade 2 of the first rotor 21
1a is formed from the left end portion to the right end portion of the first rotor 21, and plate-shaped feed blades 21b, 21b ... Which protrude in the radial direction are formed at the right end portion of the first rotor 21. There is. Similarly, the screw blade 22a of the second rotor 22
Is formed from the left end portion to the right end portion of the second rotor 22, and the feed blades 22b.2 are formed on the right end portion of the second rotor 22.
2b ... are formed, and the threshing waste (culm) after threshing is sent by the feeding blades 21b, 21b ..., 22b. In this way, the first rotor 21 and the second rotor 22 are formed in the same shape, and the productivity is improved.

When the harvested grain culm is sent from the feeder house 10 to the charging port 70 with such a configuration, the grain culm is provided with the first rotor 21 and the second rotor 21 as shown by arrows in FIGS. 2 and 3.
By rotating with the rotor 22, while reciprocating back and forth along the inner circumference of the threshing part 18, the grains are gradually fed rightward to be shredded, and the culms are dropped from the discharge port 75. In this configuration, the input port 70 and the discharge port 75 of the threshing unit 18 are arranged at left-right opposite positions (diagonal direction of the threshing chamber), and as a result that the path through which the threshing is performed becomes long, the unhandled area also decreases, Threshing performance is improved.

Next, a second embodiment of the threshing unit 18 will be described. In this embodiment, as shown in FIG. 4, new receiving networks 41A and 41B are arranged on the extension of the receiving network unit 40. The receiving nets 41A and 41B have a side view,
The receiving net 41A is formed in an arc shape and is arranged above the front of the first rotor 21 and on the extension of the receiving net 40A, and its upper end is arranged so as to be continuously connected to the front part of the rotor cover 36. The receiving net 41B is disposed on the upper rear side of the second rotor 22 and on the extension of the receiving net 40C, and the upper end is the rotor cover 36.
It is arranged so that it can be connected to the rear of the car. In this configuration, the receiving nets 4 arranged around the rotors 21 and 22
The surface area of 0A, 40B, 40C, 41A, and 41B is expanded, the period for detangling the grain culms is extended, the amount of unhandled grains is reduced, and the threshing performance is improved. Also, the receiving networks 40A and 40
B, 40C, 41A, 41B are fitted with meshes of optimal shape such as openings and gaps depending on the arrangement position, and
The shape of the net can be changed according to the variety of the crop, and the adaptability to the crop is good.

Next, a third embodiment of the threshing unit 18 will be described. As shown in FIG. 5, in this embodiment, the first
With the same configuration as the embodiment, new receiving nets 41A and 41B are arranged obliquely above the rotors 21 and 22, and then the rotors 21
The lower net receiving unit 42 has the following structure. The net-receiving unit 42 has an arc-shaped net 4 in a side view.
2A and 42C and an inverted "V" shaped receiving net 42B,
The receiving net 42A is disposed below the front of the first rotor 21,
The receiving net 42B is arranged below both rotors 21 and 22,
42 C of said receiving nets are arrange | positioned at the back lower part of the 2nd rotor 22, and it has the structure which made the lower parts of both rotors 21 and 22 connect. The receiving net 41A is arranged on the front upper side of the first rotor 21 on the extension of the receiving net 42A, and the receiving net 41B is placed on the rear upper side of the second rotor 22 on the extension of the receiving net 42C. Has been done. With such a configuration, the receiving nets 42A, which are arranged around the rotors 21 and 22,
The surface areas of 42B, 42C, 41A, and 41B are further expanded, the period of degumming of the grain culms is further extended, the amount of unhandled grains is reduced, and the threshing performance is further improved. In addition, the receiving nets 41A, 41B, 42A, 42B, 42C may be fitted with an optimally shaped receiving net such as openings or gaps depending on the arrangement position, and the shape of the receiving net may be changed according to the variety of the crop. It is also possible and has good adaptability to crops.

Next, a fourth embodiment of the threshing unit 18 will be described. This embodiment is characterized by the net-receiving unit 43, and as shown in FIG. 6, the net-receiving unit 43 includes the arc-shaped nets 43A and 43C and the linear net 43 in a side view.
The upper end portion 43a of the receiving net 43A arranged in front of the first rotor 21 and the upper end portion 43c of the receiving net 43C arranged behind the second rotor 22 are both formed by the roller 2
It is extended to a position higher than the rotation shafts 21c and 22c of 1.22. That is, the receiving nets 43A and 43C are the rotary shaft 2
The rotors 21 and 22 are arranged in the range of not less than ¼ and not more than ½ of the lower ends of the rotors 1 and 22c. In addition, a receiving net 43B is arranged between the receiving nets 43A and 43C, the receiving net unit 43 is formed in a substantially "U" shape in a side view, and a space between the lower portions of both rotors 21 and 22 is a front-rear direction. It will be a communication structure. With such a configuration, the net-receiving area of the net-receiving unit 43 itself arranged around the rotors 21 and 22 is expanded, the period of detangling the grain culms is lengthened, the amount of unhandled grains is reduced, and the threshing performance is reduced. Is improved. In addition, the receiving networks 43A and 43
B ・ 43C can be fitted with a mesh net with an optimal shape such as openings and gaps depending on the arrangement position, and the mesh net shape can be changed according to the variety of crops, which is good for crops. .

Next, a fifth embodiment of the threshing unit 18 will be described. In this embodiment, as shown in FIG. 7, the left front portion of the receiving net 40A is cut out to form a charging port 71 in the front lower part of the first rotor 21, and a beater is positioned immediately in front of the charging port 71. 34 are arranged. In this configuration, the beater 34 is arranged below the front of the first rotor 21, a wide space above the beater 34 is secured, the space can be effectively used, and the inheritance from the feeder house 10 becomes good, The feeder house 10 can be arranged at a low position, and the space above it can be effectively used.

Next, a sixth embodiment of the threshing unit 18 will be described. In this embodiment, as shown in FIG.
5 is arranged in the upper front of the first rotor 21, and the threshing section 18
An input port 72 is provided in the upper front part of the first rotor 21. In this configuration, the input port 72 is formed without notching the receiving net 40A, and the beater 35 allows the threshing unit 18
It is less likely that the grain culms thrown in will spill from the input port 72 to the beater 35 side. The grain culm thrown into the threshing unit 18 from an obliquely upper position by the beater 35 falls into the receiving net 40A below the first rotor 21 due to its own weight, so that the transfer of the grain culm from the reaping unit 8 to the threshing unit 18 is smooth. become. In addition, the receiving net 40A immediately after being put into the threshing device
The particles can be shredded, and the shattering path can be lengthened.

Further, in the seventh embodiment of the threshing section 18, the mowing section 8 is a whole crop type combine, and as shown in FIG. 9, the threshing section 1 is the same as the sixth embodiment.
The inlet 72 to the first rotor 22 is disposed above and in front of the first rotor 22. With this configuration, the plate-shaped cutting blade 8 of the cutting unit 8 is provided.
By rotating 1, the grain culms are cut and thrown up at the same time, and the grain culms such as paddy and straw are thrown into the threshing part 18 from an obliquely upper side and fall into the receiving net 40A below the first rotor 21 by its own weight. Therefore, the transfer of the grain culms from the reaping unit 8 to the threshing unit 18 becomes smooth.

Next, an eighth embodiment of the threshing unit 18 will be described. In this embodiment, as shown in FIG. 10, partition members 65, 65 ... Are arranged in a row between the rotors 21, 22 on the upper surface of the receiving net 40B at appropriate intervals in the left-right width direction. The longitudinal direction of the partition members 65, 65, ... Is the screw blade 21a on the outer peripheral surface of the rotor 21, 22.
The plate blades are arranged in the rotational orbital direction of 22a, that is, at an angle that is substantially parallel to the inclination angle of the screw blades 21a and 22a inclined from the inlet 70 to the outlet 75 in plan view. The partitioning members 65, 65 ... Are arranged so as to be inclined, and are erected from the upper surface of the receiving net 40B so as not to interfere with the rotation of the screw blades 21a, 22a. The partition member 65, 65 ...
Grain culm delivered between January and 22 will be actively guided.
In this structure, the grain culm is guided by the dust-sending valves 56, 56 ... Above the rotors 21 and 22, and is guided by the partition members 65, 65 ... It is transported along the route. As a result, the paddy in the straw is further rubbed, and the threshing performance is improved.

Next, a ninth embodiment of the threshing section 18 will be described. In this embodiment, as shown in FIG. 11, the rotor covers 37, 37 covering the upper portions of the rotors 21, 22 are configured to be vertically rotatable. Rotational fulcrum shafts 37a, 37a are provided on the front upper side of the first rotor 21 and on the upper rear side of the second rotor 22, respectively, and one end portion of the rotor cover 37 is attached to the rotary fulcrum shafts 37a to enable vertical rotation. To configure. Fixtures such as stoppers, bolts, and pins are arranged between the rotating base portion or side portion of the rotor cover 37 and the machine body frame so that they can be fixed at an arbitrary angle. In this configuration, as shown in FIG. 7A, the rotor covers 37, 37 supported in a straight line in a side view are adjusted in accordance with the number of grains, the type of grains, etc. As shown, it can be set in the shape of a letter "C", and the ceiling height and angle can be adjusted up and down to change the volume of the space. By changing the direction in which the grain culms are ejected from the second rotor 22, With the succession to the first rotor 21 being smooth, the time for collecting the clam grains in the straw can be increased, and the recovery rate of the clam grains is improved.

Next, a tenth embodiment of the threshing unit 18 will be described. In this embodiment, the first rotor 2 shown in FIG.
The rotational speed of 1 is set to be higher than the rotational speed of the second rotor 22. In this configuration, the input port 7 is opened by the beater 33.
The cut culms thrown to 0 can be swung into the threshing unit 18 quickly by the first rotor 21. Further, when the grain culms are fed by the rotor 21 (or 22) on one side while being fed by the rotor 22 (or 21) on the other side in the threshing unit 18, the grain culm is generated due to the difference in the rotation speed of the rotors 21 and 22. A strong shock is applied to the culm, and the culms are distributed and dispersed, improving the threshing performance.

In the eleventh embodiment of the threshing section 18, conversely, the rotation speed of the second rotor 22 is set higher than that of the first rotor 21, and the rotation speed of the first rotor 21 is , The difference in rotational speed from the beater 33 is made small. With this configuration, the input port 70 is opened by the beater 33.
The harvested grain culm thrown into is smoothly fed into the threshing section 18 by the first rotor 21, so that the impact on the grain culm is reduced and damage to the grain culm is reduced. In the threshing unit 18, the grain culm has one rotor 21 (or 2).
2) while the other rotor 22 (or 2
When it is taken in in 1), a strong impact is applied to the grain culm due to the difference in rotation speed of the rotors 21 and 22, and the grain culm is taken in while being dispersed, and the threshing performance is improved. With such a configuration,
In particular, the second rotor 22 that rotates at a higher speed than the first rotor 21 plays a role of a processing cylinder.

Next, a twelfth embodiment of the threshing unit 18 will be described. In this embodiment, as shown in FIG.
The diameter of the rotor 23 is larger than that of the second rotor 24. The lowermost position of the first rotor 23 and the second
A net receiving unit 44 is arranged so that the lowermost position of the rotor 24 is at the same height and covers the lower portions of both rotors 23 and 24. Like the receiving net 40, the receiving net unit 44 is composed of circular receiving nets 44A and 44C and a linear receiving net 44B in a side view, and the receiving net 44A is arranged in front of the first rotor 23. The receiving net 44B is connected to both rotors 23.
24, and the receiving net 44C is located below the second rotor 24.
The net unit 44, which is arranged in the rear of the rotor and is a combination of these, is formed in a substantially "U" shape in a side view.
The lower part of 3/24 is connected to the front and back. The upper portion of both rotors 23, 24 is covered with a rotor cover 38, and the rear portion of the rotor cover 38 is inclined rearward and downward.
.. are provided at appropriate intervals in the left-right width direction, and the longitudinal direction of the dust-sending valves 57.
4 are arranged in the direction of the rotation orbit of the screw blades on the outer peripheral surface. On the contrary, the diameter of the rear second rotor is
The diameter may be larger than the diameter of the front first rotor. By making the diameters of the rotors 23 and 24 different in this way, the acting force (handle force) by the first rotor 23 and the acting force (handle force) by the second rotor 24 are changed, and the threshing unit 1
If the grain culms are fed by the rotor 23 (or 24) on one side while being fed by the rotor 24 (or 23) on the other side within 8, the impact is applied due to the difference in the acting force, and the grain culms are dispersed and rolled. The threshing performance is improved.

Next, a thirteenth embodiment of the threshing unit 18 will be described. In this embodiment, as shown in FIG. 13, both rotors 21 and 22 having the same diameter are rotated at the same speed in the clockwise direction when viewed from the left side in the traveling direction. Screw blades 21d and 22d having a plurality of teeth are provided on the outer periphery of the rotors 21 and 22, and are arranged spirally in the right-hand screw direction from the right side to the left end. That is, the screw blades 21d and 22d are arranged to rotate in the opposite direction to the screw blades 21a and 22a on the outer circumference of the rotors 21 and 22 shown in FIG. Further, the beater 35 is arranged obliquely above the first rotor 21, and the charging port 72 is arranged at a position as high as possible so that the grain culm thrown into the charging port 72 does not spill from the charging port 72 to the beater 35 side. It is good to configure. With the above configuration, the threshing unit 18
The grain culm is reciprocated back and forth along the inner circumference of the threshing unit 18 by the rotation of the first rotor 21 and the second rotor 22, while being gradually fed to the right and shed grain, and the discharge port It is discharged from 75.

Next, a fourteenth embodiment of the threshing unit 18 will be described. In this embodiment, as shown in FIG. 14, when viewed from the left side, the first rotor 21 is rotated counterclockwise and the second rotor 2 is rotated.
Rotate 2 clockwise. Below the rotors 21 and 22, a receiving net unit 45 is arranged, and the receiving net unit 4
5 is a side view of the receiving nets 4 which are concentric with the rotors 21 and 22
It is composed of 5A, 45B, 45C, and 45D, and is arranged in a substantially "ω" shape, and the lower portions of both rotors 21 and 22 are connected to each other in the front-rear direction. The receiving net 45A is located below the front of the first rotor 21, the receiving net 40B is located below the rear of the first rotor 21, and the receiving net 45C is located below the front of the second rotor 22. The net 40D is disposed below and rearward of the second rotor 22, and receives the nets 45A, 45B, 45C ,.
The upper end of the 45D has a rotary shaft 21c.
It is arranged lower than 22c. Further, the beater 35 is arranged obliquely above the first rotor 21, and the charging port 72 is arranged at a position as high as possible so that the grain culm thrown into the charging port 72 does not spill from the charging port 72 to the beater 35 side. It is good to configure. As shown in FIG. 15, screw blades 21a are arranged spirally in the right-hand screw direction from the left end to the right side on the outer periphery of the first rotor 21, and the screw blades 22d are formed on the outer periphery of the second rotor 22. From the right side portion to the left end portion, they are arranged spirally in the right screw direction. With such a configuration, when the cut grain culm is sent by the beater 35 to the input port 72, the grain culm is provided on the outer periphery of the first rotor 21 and the second rotor 22 as shown by the arrows in FIGS. 14 and 15. "8" in a side view while alternating with the outer circumference of
As it draws letters, it is gradually fed to the right while being shredded and dropped from the discharge port 75. With this configuration,
Since the input port 72 and the discharge port 75 of the threshing unit 18 are arranged at the left and right positions, and the path through which the threshing is performed becomes long, the unhandled portion is reduced and the threshing performance is improved. Further, in this configuration, one rotor is arranged in the left-right direction, and a semi-circular receiving net in side view having a net receiving area similar to that of the net receiving unit 45 is provided below the rotor. The height of the threshing portion can be made lower than that of the threshing portion arranged, the vehicle height can be suppressed to be low, and the stability is improved.

Further, as shown in FIG. 16, in the fifteenth embodiment of the threshing section 18, the rotation direction is opposite to that of the fourteenth embodiment,
In the left side view, the first rotor 21 is rotated clockwise and the second rotor 22 is rotated counterclockwise. As shown in FIG.
On the outer circumference of the first rotor 21, screw blades 21d are arranged spirally in the right screw direction from the right side to the left end, and on the outer circumference of the second rotor 22, the screw blades 22a are directed from the left end to the right side. And are arranged spirally in the right screw direction. Further, the receiving unit 45 is arranged below both rotors 21 and 22. When the harvested grain culm is sent to the input port 72 by the beater 35 with such a configuration, the grain culm is, as shown by an arrow in FIGS. 16 and 17,
The outer circumference of the first rotor 21 and the outer circumference of the second rotor 22,
While being alternated, in a side view, "8" is drawn in the direction opposite to that of the fourteenth embodiment, and the particles are gradually fed rightward to be granulated and dropped from the discharge port 75.

Next, a sixteenth embodiment of the threshing unit 18 will be described. In this embodiment, as shown in FIG.
At the front and rear of the rotor 21 and the second rotor 22, the receiving net 40
A beater 25 is disposed in the left-right direction (parallel to the first rotor 21 and the second rotor 22) as a rotation processing body at a spatial position formed on B and between the first rotor 21 and the second rotor 22. In addition, above the beater 25, the dust transfer valve 5
6.56 ... are arranged. The beater 25 is formed to have a smaller diameter than the rotors 21 and 22.
It is rotated counterclockwise in the same direction as the left side view. The rotation speed of the beater 25 is configured to be changeable, and the setting can be changed according to the variety of crops, working conditions, etc., and the versatility is improved. With such a configuration, the beaters 25 feed the grain culm that remains between the rotors 21 and 22 to the second rotor 22, and the beater-like effect of the beaters 35 improves the threshing treatment capacity.

Next, a seventeenth embodiment of the threshing unit 18 will be described. In this embodiment, as shown in FIG.
Instead of the beater 25, an auxiliary rotor 26 as a rotation processing body is provided at an intermediate position between the rotor 21 and the second rotor 22.
Are arranged. The auxiliary rotor 26 includes the rotors 21 and 22.
A screw blade having a smaller diameter than that of the rotor 21 and 22 is formed in a spiral shape in the left screw direction from the left end portion to the right end portion on the outer periphery of the screw blade. , When viewed from the left side, it is rotated counterclockwise.
Regarding the rotation speed of this auxiliary rotor 26,
It is configured such that it can be set faster than the rotation speed of 1.22, and the setting can be changed according to the variety of crops, working conditions, etc., and versatility is improved. Rotor 21.2
A receiving net unit 46 is arranged below 5 · 22, and the receiving net unit 46 has a receiving net 46A · 46B · 46D · 46E concentric with the rotors 21 · 22 and a concentric circular arc with the auxiliary rotor 26 in a side view. It is composed of a receiving net 46C and is continuously arranged in a wavy manner in the front-rear direction so that the lower portions of both rotors 21 and 22 are communicated in the front-rear direction. The receiving network 46A is the first
It is arranged below the front of the rotor 21, and the receiving net 46B is
The receiving net 46C is arranged below the rear of the rotor 21, the receiving net 46C is arranged below the auxiliary rotor 26, the receiving net 46D is arranged below the front of the second rotor 22, and the receiving net 46E is located behind the second rotor 22. It is located below. With such a structure, as shown by the arrow in FIG. 19, the grain culms retained between the rotors 21 and 22 are moved by the auxiliary rotor 26 to the second rotor 22.
Sent to. At this time, due to the difference in rotation speed between the rotors 21 and 22 and the auxiliary rotor 26, when the grain culm is fed by the first rotor 21, while being fed by the auxiliary rotor 26, or while being fed by the auxiliary rotor 26, the second grain Rotor 2
When it is rolled in 2, a strong shock is applied to the grain culm,
Threshing is carried out while being dispersed, and threshing performance is improved. Further, the rotor can cause the grains that have entered the mesh of the receiving net 46C to leak, and the effect of cutting off can be improved.
Instead of the auxiliary rotor 26, a beater may be arranged above the receiving net 46C.

Further, as shown in FIG. 20, in the eighteenth embodiment of the threshing portion 18, the right screw is provided on the outer periphery of the auxiliary rotor 26 from the right end to the left end in the opposite direction to the seventeenth embodiment. The screw blades are spirally arranged in the direction, and are rotated clockwise in the left side view, which is the opposite direction to the rotors 21 and 22. The rotation speed of the auxiliary rotor 26 is configured to be changeable, and the rotation direction is also configured to be switchable between forward and reverse, so that the setting can be changed according to the variety of crops, working conditions, etc., and the versatility is improved. Has been planned. When switching the rotation direction, the auxiliary rotor 26 is once removed and the arrangement direction of the screw blades is reversed and attached. With such a configuration, as shown by the arrow in FIG. 20, the grain culm is sent to the second rotor 22 by the auxiliary rotor 26 without staying between the rotors 21 and 22. At this time, the grain culms are not handled between the rotors 21 and 22, but are sent to the upper side of the auxiliary rotor 26 and inherited by the second rotor 22. Thus, when it is desired not to handle the grain culm more than necessary, the auxiliary rotor 26 is rotated clockwise in the left side view, and conversely, when the grain culm is actively handled, the auxiliary rotor 26 is used. By rotating the rotor 26 in the clockwise direction, it can be widely adapted according to the variety of crops, working conditions, and the like.

Next, a nineteenth embodiment of the threshing unit 18 will be described. In this embodiment, as shown in FIG. 21, the outlet 76 from the threshing unit 18 is arranged on the right side of the rear portion of the threshing unit 18. The first rotor 21 has the same configuration as that of the first embodiment, and the second rotor 22 has screw blades 22e spirally arranged in the left screw direction from the left end portion to the right end portion on the outer periphery thereof. . A culm beater 64 is disposed on the right side of the second rotor 22, and the culm discharged from the discharge port 14 is conveyed rearward by the culm beater 64 and taken into a suction fan behind the culm beater 61. It is inherited by a chipper-type spreader that is horizontally stretched across the entire width at the rear end of the machine, cut by a plurality of blades of the spreader, and discharged from the rear end of the machine to the field. Has become. With such a configuration, when the cut grain culm is sent from the feeder house 10 to the input port 72, the grain culm is rotated along the inner circumference of the threshing unit 18 by the rotation of the first rotor 21 and the second rotor 22. While being reciprocated back and forth, the particles are gradually fed rightward to be granulated and discharged from the discharge port 76 to the right. With this configuration, since the culm beater 64 can be arranged ahead of the arrangement position of the conventional culm beater 61, the front-rear length of the body can be shortened.

Next, a twentieth embodiment of the threshing unit 18 will be described. In this embodiment, as shown in FIG. 22, a discharge port 77 from the threshing unit 18 is formed at the rear end of the threshing unit 18 over the entire width in the left and right direction. As shown in FIG. 23, the first rotor 21 and the second rotor 22 are both rotated counterclockwise in left side view.
A receiving network unit 47 is arranged below the. The net receiving unit 47 includes a net 47A that is concentric with the rotor 21 and a straight net 47B / 47C when viewed from the side.
Both rotors 21 and 2 are arranged in the shape of a "J" lying down.
The lower part of 2 is connected to the front and back. The receiving net 47
A is arranged below the front of the first rotor 21, and the receiving net 47
B is disposed below the rear of the first rotor 21, and the receiving net 47
C is disposed below the second rotor 22, and the receiving net 47C
The entire left and right width of the rear end is the discharge port 77. The receiving net 47B
The plate-shaped dust-sending valves 66, 66, ... Are arranged at appropriate intervals in the left-right width direction so as not to interfere with each other between the rotors 21, 22 on the upper surface of the dust-sending valves 66, 66.
The longitudinal direction of ... is the inlet 72 on the left front part of the threshing unit 18.
Is arranged in the radial direction toward the discharge port 77 extending from the entire width to the rear portion. With such a configuration, the feeder house 10
When the harvested grain culm is sent from the charging port 72 to the input port 72, the grain culm is distributed in the radial direction while being guided by the dust transfer valves 66, 66 ... After being handled by the first rotor 21. 2 rotor 22
And is discharged as it is from the discharge port 77 to the rear. That is, in this configuration, the grain culm is threshed by the first rotor 21 and the second rotor 22 and is discharged only by passing once below it, which is suitable for grains such as buckwheat.

Next, a twenty-first embodiment of the threshing unit 18 will be described. In this embodiment, as shown in FIG. 24, the left rear portion of the receiving net 40C is cut out so that the discharge port 78 is provided at the threshing portion 1.
8 is disposed behind the left side portion. A culm beater is disposed behind the discharge port 78, and the culm discharged from the discharge port 78 is conveyed rearward by the discharge eater and taken into a suction fan at the rear of the culm beater, where it is discharged from the rear of the machine. It is inherited by a chipper-type spreader that is laterally stretched across the entire width at the end, is cut by a plurality of blades of the spreader, and is discharged to the field from the rear end of the machine. . As shown in FIG. 25, a partition plate 59 is vertically provided from above the left side portions of the rotors 21 and 22 on the inner peripheral surface of the rotor cover 36. This partition 59
Is extended to immediately above the rotors 21 and 22 across the front and rear inside the threshing unit 18, and is configured to prevent lateral movement of the grain culms by the screw blades 21a and 22a. With such a configuration, when the cut grain culm is sent from the feeder house 10 to the input port 70, the grain culm is handled by the first rotor 21, and then is blocked by the partition plate 59 while being blocked by the second rotor 22. It is handled and discharged as it is from the discharge port 78 to the rear. That is, in this configuration, the grain culm is threshed by the first rotor 21 and the second rotor 22 and is discharged only by passing once below it, which is suitable for grains such as buckwheat. Further, in this configuration, the rotation speed of the second rotor 22 is set to be higher than the rotation speed of the first rotor 21, so that the grain culms are fed by the first rotor 21 and taken in by the second rotor 22. Then, due to the difference in the rotation speed of the rotors 21 and 22, a strong impact is applied to the grain culm, and the grain culms are taken in while being dispersed, the threshing performance is improved, and the adaptability to crops is further improved.

Further, in the twenty-second embodiment of the threshing section 18, as in the twenty-first embodiment, the discharge port 78 is arranged on the left rear side of the threshing section 18, and the screw blades 21a. Diffusion plate 2 instead of arranging 22a
Surround 1f and 22f. As shown in FIG. 26, the diffusion plate 21f (22f) is spirally arranged in the right screw direction from the left end portion of the rotor 21 (22) toward the right side portion,
The grain culms are not fed horizontally. The grain culm is the diffusion plate 2
Threshing is performed while handling between the curved plate surface of 1f · 22f and the receiving nets 40A, 40B, 40C. With such a configuration, when the cut grain culm is sent from the feeder house 10 to the input port 70, the grain culm is handled by the first rotor 21 and then conveyed backward and handled by the second rotor 22. , Is directly discharged from the discharge port 78. That is, in this configuration, the grain culm is threshed by the first rotor 21 and the second rotor 22 and is discharged only by passing once below it, which is suitable for grains such as buckwheat. Further, even with this configuration, the second rotor 22
By setting the rotation speed of the first rotor 21 higher than that of the first rotor 21, when the grain culm is fed by the first rotor 21 and fed by the second rotor 22, the rotor 21
Due to the difference in the rotation speed of 22, a strong shock is applied to the grain culm,
By being dispersed and fed, threshing performance is improved and adaptability to crops is improved.

As described above, the threshing unit 18 is an embodiment, and the present invention is not limited to the above-described embodiments, and the threshing unit 18 may be configured by combining some of these embodiments.

Next, the design of the threshing unit 18 will be described. The threshing unit 18 described above has a characteristic for each embodiment, and in the configuration in which the two rotors 21 and 22 are arranged laterally in the threshing unit 18, for example, as shown in Table 1 below, the threshing unit 18 Make up.

[0061]

[Table 1]

First, depending on whether the discharge port is arranged on the rear side of the right side or the rear side of the left side of the threshing section 18, the transportation path of the grain culms is divided into two. That is, the threshing unit 1 shown in FIG.
As in the first embodiment of No. 8, the discharge port 75 is arranged on the right rear side of the threshing unit 18, and the grain culm is connected to the first rotor 21 and the second rotor 22 as shown by the arrow in the figure. 24, while reciprocating back and forth along the inner circumference of the threshing unit 18, the grains are gradually slewed to the right to be shredded and discharged from the discharge port 75, and the threshing unit 18 shown in FIG. Second
As in the first embodiment, the discharge port 78 is arranged behind the left side portion of the threshing unit 18, and the grain culm is set to
The rotor 21 and the second rotor 22 are divided into a second configuration in which the rotor 21 and the second rotor 22 are discharged from the discharge port 78 by passing the lower portion once. In the following description, the first configuration will be referred to as an “axial flow type” and the second configuration will be referred to as a “DC type”.

The transport path of the grain culm is longer in the axial flow type than in the direct current type. In the axial flow type, the grain culms are handled more firmly and the threshing property is better than in the direct current type, but on the receiving net 40B. A large amount of grain stays in the inner part of the container, and the sloughing property to the sorting device 19 thereunder is not good. First of all, in consideration of this point, the transport route of the grain culm is an axial flow type,
Or, select either DC type.

Next, the rotational speeds of the rotors 21 and 22 are set. Both of the rotors 21 and 22 are rotating counterclockwise in the left side view shown in FIG. 1, and the rotation speeds of both rotors are set to the same speed or the rotation speed of the second rotor 22 is set to the first speed. It is selected whether to set the rotation speed higher than the rotation speed of the rotor 21. Compared to the former, the latter has a strong impact when a grain culm is fed by the first rotor 21 and is fed by the second rotor 22 due to the difference in the rotation speed of the rotors 21 and 22, so that the grain culm is threshable. However, a large amount of grains stay on the receiving net 40B, and the shedding property to the sorting device 19 thereunder is not good. In consideration of this point, the rotation speeds of the rotors 21 and 22 are set. Based on the above, the structure of the threshing unit 18 is determined, and with such a configuration, it is possible to deal with the variety of crops, the threshing conditions, and the like, and the adaptability is improved.

Further, in the structure shown in FIG. 19 in which the auxiliary rotor 26 is arranged between the two rotors 21 and 22 arranged in the horizontal direction, the threshing portion 18 is provided as shown in Table 2 below. Constitute.

[0066]

[Table 2]

First, similar to the above, depending on whether the discharge port is arranged on the rear side of the right side or the rear side of the left side of the threshing section 18, either the axial flow type or the direct current type is selected as the transport path of the grain stems. To do.

Next, the rotation direction of the auxiliary rotor 26 is determined. When this auxiliary rotor 26 is rotated counterclockwise in the same direction as the rotors 21 and 22 in the left side view shown in FIG. 19, the grain culms are sent to the lower side of the auxiliary rotor 26 between the rotors 21 and 22. While being handled, at this time the grain culm is the first rotor 21.
Is fed by the auxiliary rotor 26 while being fed by the second rotor 22, and is fed by the second rotor 22 while being fed by the auxiliary rotor 26. The grain culm is shocked and threshing is improved, but on the receiving net 46C. A large amount of grain stays, and the grain removing property to the sorting device 19 thereunder is not good. On the other hand, as shown in FIG. 20, when the auxiliary rotor 26 is rotated clockwise in the left side view, the grain culms are not handled between the rotors 21 and 22 and are sent to the upper side of the auxiliary rotor 26. Be transported,
It is inherited by the second rotor 22. Thus, when it is desired not to handle the grain culm more than necessary, the auxiliary rotor 26 is rotated clockwise in the left side view, and conversely, when the grain culm is actively handled, the auxiliary rotor 26 is used. Rotate the rotor 26 clockwise. Based on the above, the structure of the threshing unit 18 is determined, and with such a configuration, it is possible to deal with the variety of crops, the threshing conditions, and the like, and the adaptability is improved.

[0069]

Since the present invention is constructed as described above,
It has the following effects. First, as in claim 1, two rotors having the same diameter are arranged in the left-right direction, and are arranged below both rotors in a threshing section of a general-purpose combine, which is arranged side by side in the front-back direction of the machine body traveling direction. By integrating the receiving net and connecting the lower parts of both rotors,
The cost can be reduced. Also, in this configuration, by rotating both rotors in the same direction at the same speed,
The grain culms thrown into the threshing section are smoothly transferred between both rotors, and by the rotation of both rotors, the grain culm is reciprocated back and forth along the inner circumference of the threshing section, while being gradually fed to one side. Be shredded.

Specifically, as in claim 2, the net is formed in a substantially "U" shape in a side view, with the arcuate portions at the front and rear ends and the linear portions therebetween. Therefore, the cost can be reduced. In this configuration, by rotating both rotors in the same direction at the same speed, the grain culms thrown into the threshing section are smoothly transferred between the two rotors, and the rotation of both rotors causes the inner circumference of the threshing section to rotate. While reciprocating back and forth along the line, it is gradually fed to one side and shredded.

Alternatively, as described in claim 3, by arranging the receiving net in a side view in an arcuate portion at both front and rear ends and a side view in an inverted “V” -shaped portion, the receiving net is provided. The net area can be expanded and the cost can be reduced. In this configuration, by rotating both rotors in the same direction at the same speed, the grain culms put into the threshing section are
It is smoothly transferred between both rotors, and by the rotation of both rotors, it reciprocates back and forth along the inner circumference of the threshing portion, and is gradually fed to one side to be shredded.

Further, as in claim 4, by extending the upper end portion of the receiving net to a position higher than the center of rotation of the rotor, the surface area of the receiving net arranged around the rotor is expanded, and the grain kernel The crushing period of the sushi is extended, the amount of unprocessed food remaining is reduced, and the threshing performance is improved.

According to a fifth aspect of the present invention, a plurality of partition members are provided in the front-rear direction at intervals between the rotors on the upper surface of the net, so that the rotors are separated from each other by the partition members. The grain culm to be handed over is actively guided. In this configuration, the grain culm is guided along the dust feed valve above the rotor and guided along the partition member below the rotor while being conveyed along a predetermined path, and the rice in the straw is further rubbed, Threshing performance is improved.

As described above, the rotation speed of the front rotor is set to be higher than the rotation speed of the rear rotor, so that the grain culms thrown into the threshing section are The rotor allows for rapid feeding into the threshing section. Further, while the grain culms are sent out by one rotor in the threshing section, when they are fed in by the other rotor, a strong impact is applied to the grain culms due to the difference in the rotational speed of both rotors, and they are fed in while being dispersed, Threshing performance is improved.

Alternatively, as in claim 7, the rotation speed of the rear rotor is set to be higher than the rotation speed of the front rotor, so that the grain culms thrown into the threshing section can be moved by the front rotor. Since it is smoothly fed into the threshing section, the impact applied to the grain culm is reduced, and the damage to the grain culm is reduced. Further, while the grain culms are fed by the one rotor in the threshing unit and fed in by the other rotor, a strong impact is applied to the grain culms due to the difference in the rotational speed of both rotors,
Threshing is carried out while being dispersed, and threshing performance is improved.

Further, as in claim 8, one of the two rotors having the same diameter is configured to have a larger diameter than the other, so that the acting force (handle force) by one rotor and the other rotor by When the acting force (handling force) changes and the culm is sent out by one rotor in the threshing part and is fed by the other rotor, an impact is applied due to the difference in the acting force, and the culms are dispersed. While throttling, threshing performance is improved.

According to the ninth aspect, by disposing the rotation processing body at the front-rear intermediate position of the both rotors, the grain culms retained between the rotors by the rotation processing body move to the rear rotor. The thrus processing effect of the rotary processing body is improved, and the threshing processing capacity is improved.

Further, according to the tenth aspect, by rotating the rotary processing body in the same direction as the both rotors, the grain culms retained between the rotors by the rotary processing body are transferred to the rear rotor. Sent. At this time, due to the difference in rotation speed between the two rotors and the rotation processing body, when the grain culm is fed by the rotation processing body while being fed by the front rotor, or when being fed by the rotation processing body, it is rolled by the rear rotor. When put in, a strong impact is applied to the grain culm, and the grain culm is fed while being dispersed, and the threshing performance is improved. In addition, the rotor can allow the grains that have entered the mesh of the receiving net to leak, and the effect of removing the grains can be improved.

Alternatively, as in the eleventh aspect, by rotating the rotary processing body in the opposite direction to the both rotors, the grain culms put into the threshing section are retained between the rotors by the rotary processing body. Without being sent to the rear rotor.
At this time, the grain culm is not handled between the rotors, but is passed on to the rotor behind while being fed on the upper side of the rotary processing body.

Further, as in claim 12, in the threshing section of the general-purpose combine, in which two rotors having the same diameter are arranged in the left-right direction and arranged side by side in the front-back direction with respect to the traveling direction of the machine,
By integrating the receiving nets arranged below both rotors and connecting the lower parts of both rotors, and rotating both rotors in the opposite direction, the grain culms thrown into the threshing section are Alternately along the outer circumference of the rotor and the outer circumference of the rear rotor, drawing "8" in a side view, the particles are gradually fed to one side to be granulated and dropped from the discharge port. It

According to a thirteenth aspect, the inlet to the threshing portion is arranged in front of one side portion of the front rotor, and the outlet from the threshing portion is disposed behind the other side portion of the rear rotor. As a result of the arrangement, the input port and the discharge port of the threshing unit are arranged at the left and right positions, and as a result, the path through which the threshing is performed becomes longer, the unhandled portion is reduced, and the threshing performance is improved.

Alternatively, as in claim 14, the inlet to the threshing portion is arranged in front of one side portion of the front rotor, and the outlet from the threshing portion is disposed behind one side portion of the rear rotor. Due to the arrangement, the grain culms thrown into the threshing section are handled by the front rotor, then by the rear rotor, and are directly discharged rearward from the discharge port. With this configuration, the grain culm is threshed by the front rotor and the rear rotor, and is discharged only by passing once below the rotor, which is suitable for grains such as buckwheat.

[Brief description of drawings]

FIG. 1 is a left side view showing the overall configuration of a general-purpose combine.

FIG. 2 is a left side view of the threshing unit 18 according to the first embodiment.

FIG. 3 is a plan view of the same.

FIG. 4 is a left side view of the threshing unit 18 according to the second embodiment.

FIG. 5 is a left side view of the threshing unit 18 according to the third embodiment.

FIG. 6 is a left side view of the threshing unit 18 according to the fourth embodiment.

FIG. 7 is a left side view of the threshing unit 18 according to the fifth embodiment.

FIG. 8 is a left side view of the threshing unit 18 according to the sixth embodiment.

FIG. 9 is a left side view of the threshing unit 18 according to the seventh embodiment.

FIG. 10 is a plan view of a threshing unit 18 according to an eighth embodiment.

FIG. 11 is a left side view of the threshing unit 18 according to the ninth embodiment.
(A) The figure which constituted the ceiling height of the threshing part 18 low.
(B) The figure which constituted the ceiling height of the threshing part 18 high.

FIG. 12 is a left side view of the threshing unit 18 according to the twelfth embodiment.

FIG. 13 is a left side view of the threshing unit 18 according to the thirteenth embodiment.

FIG. 14 is a left side view of the threshing unit 18 according to the fourteenth embodiment.

FIG. 15 is a plan view of the same.

FIG. 16 is a left side view of the threshing unit 18 according to the fifteenth embodiment.

FIG. 17 is a plan view of the same.

FIG. 18 is a left side view of the threshing unit 18 according to the sixteenth embodiment.

FIG. 19 is a left side view of the threshing unit 18 according to the seventeenth embodiment.

FIG. 20 is a left side view of the threshing unit 18 according to the eighteenth embodiment.

FIG. 21 is a plan view of a threshing unit 18 according to a nineteenth embodiment.

FIG. 22 is a plan view of the threshing unit 18 according to the twentieth embodiment.

FIG. 23 is a left side view of the same.

FIG. 24 is a plan view of the threshing unit 18 according to the twenty-first embodiment.

FIG. 25 is a left side view of the same.

FIG. 26 is a plan view of the threshing unit 18 according to the twenty-second embodiment.

[Explanation of symbols]

8 reaper 18 Threshing Department 21 first rotor 22 Second rotor 23 First rotor 24 Second rotor 25 beater 26 Auxiliary rotor 33 beater 34 beater 35 beater 40 Network unit 41A receiving network 41B receiving network 42 Receiver unit 43 Network unit 44 Network unit 45 Receiver unit 46 Network unit 47 Receiver unit 56 Dust valve 57 Dust valve 59 Partition board 65 Partition member 66 Dust valve 70 slot 71 slot 72 Input port 75 outlet 76 outlet 77 outlet 78 outlet

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Shigeki Murata             1-32 Yanma, Chayamachi, Kita-ku, Osaka-shi, Osaka             -Agricultural machinery Co., Ltd. (72) Inventor Mitsunori Miyamoto             1-32 Yanma, Chayamachi, Kita-ku, Osaka-shi, Osaka             -Agricultural machinery Co., Ltd. (72) Inventor Tomoyoshi Hirose             1-32 Yanma, Chayamachi, Kita-ku, Osaka-shi, Osaka             -Agricultural machinery Co., Ltd. F term (reference) 2B094 AA02 AA12 DA01 EA05 HA01                       HC05 HD15

Claims (14)

[Claims] 1. In a threshing section of a general-purpose combine in which two rotors having the same diameter are arranged in the left-right direction and are arranged side by side in front of and behind the traveling direction of the machine, a receiving net arranged below both rotors is integrated. The threshing part of a general-purpose combine, characterized in that the lower parts of both rotors are communicated with each other and both rotors are rotated in the same direction at the same speed. 2. The receiving net is formed in a substantially “U” shape by a side view and an arcuate portion at both front and rear ends, and a linear portion therebetween. General-purpose combine threshing department. 3. The receiving net according to claim 1, wherein the receiving net is provided with arcuate portions at front and rear ends in a side view, and an inverted “V” -shaped portion in a side view between them. Threshing unit of general-purpose combine. 4. The threshing part of the general-purpose combine according to claim 1, wherein an upper end of the net is extended to a position higher than a rotation center of the rotor. . 5. A plurality of partitioning members are provided in the substantially front-rear direction at intervals in the left-right direction between the rotors on the upper surface of the receiving net, according to claim 1, claim 2 or claim 4. The threshing part of the general-purpose combine according to any one of the above. 6. The general-purpose combine according to claim 1, wherein the rotation speed of the front rotor is set higher than the rotation speed of the rear rotor. Threshing department. 7. The general-purpose combine according to claim 1, wherein the rotation speed of the rear rotor is set to be higher than the rotation speed of the front rotor. Threshing department. 8. The threshing unit for a general-purpose combine according to claim 1, wherein one of the two rotors having the same diameter has a larger diameter than the other. 9. A rotation processing body is arranged at an intermediate position between the front and rear of both rotors.
The threshing part of the general-purpose combine according to any one of the above. 10. The threshing unit of a general-purpose combine according to claim 8, wherein the rotation processing body is rotated in the same direction as the both rotors. 11. The threshing unit for a general-purpose combine harvester according to claim 8, wherein the rotation processing body is rotated in a direction opposite to the rotors. 12. In a threshing section of a general-purpose combine, in which two rotors having the same diameter are arranged in the left-right direction and arranged side by side in front of and behind the traveling direction of the machine body, a receiving net arranged below both rotors is integrated. The threshing part of a general-purpose combine, characterized in that the lower parts of both rotors are communicated with each other, and both rotors are rotated in opposite directions. 13. The threshing part has an inlet port arranged in front of one side portion of the front rotor, and an outlet port of the threshing portion is arranged behind the other side portion of the rear rotor. The threshing part of the general-purpose combine according to any one of claims 1 to 12. 14. The threshing unit has an inlet port arranged in front of one side portion of the front rotor, and an outlet port of the threshing unit is arranged behind one side portion of the rear rotor. The threshing part of the general-purpose combine according to any one of claims 1 to 13.