JP2000102320A - Threshing part for general-purpose combine harvester - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve threshing performances of a threshing part prepared by arranging screw type rotors having a rotation shaft line in the left and right directions in a parallel form in the front and rear in the upper front of a grading device at the rear of a reaping part of a general-purpose combine harvester, covering the nearly lower half of each rotor in the front, and rear with a circular arc-shaped receiving net, covering the nearly upper half of each rotor with a cover making either one of left and right lateral parts of the rotors in the front and rear communicate with a communicating port and forming a discharging port at the other end of the rotor at the rear. SOLUTION: This threshing part for a general-purpose combine harvester is obtained by rotating a rotor 21 at the front in the rotative direction opposite to the rotative direction of the rotor 22 at the rear, locating the rotating shaft in the left and right directions of the rotor 22 at the rear at a lower level than that of the rotating shaft of the rotor 21 at the front, extending the front surface of a cover of the rotor 22 at the rear on the side of a communicating port 36a to the upper front of the outer peripheral surface of the rotor 22 and extending the rear surface of the cover of the rotor 22 at the rear on the side of a discharging port 36b to the upper rear of the outer peripheral surface of the rotor 22 and further arranging a grain discharging beater 61 at the rear of the rotor 22 and on the upper side of the rear of a grading device.

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 unit in which a screw type rotor is disposed above a front part of a general-purpose combine sorter in a direction perpendicular to a traveling direction.

[0002]

2. Description of the Related Art Conventionally, a general-purpose combiner projects a cutting section forward from a traveling device, and conveys grain stalks cut by the cutting section to the rear to supply it to a threshing section, threshing by the threshing section, and after threshing. Is released into the field from the rear of the aircraft. Grains, straw debris, trash, etc. that have leaked from the receiving net in the threshing section are sorted by a sorting device arranged below the threshing section, and the straw debris, trash, etc. are discharged from the rear of the fuselage, and the fines are separated from the side of the threshing section It was configured to be stored in a Glen tank arranged in Then, when the Glen tank is full, it is configured to be able to be discharged to a truck bed or the like by a discharge auger arranged so as to be capable of turning and raising and lowering above the Glen tank.

As the threshing unit, a rotor is disposed in a direction perpendicular to the traveling direction of the fuselage, and two rotors are disposed in front and rear of the threshing unit. In the back of the threshing unit, a power unit such as an engine and a vertical conveyor of a discharge conveyor for discharging grains are arranged.

A generally "U" shaped cover is disposed on the upper part of each of the front and rear rotors so that the upper part of the rotor is housed inside with the open surface facing downward, and the lower part of the rotor follows the outer diameter. A crimping net is laid to promote grain shedding, and an opening for feeding the grain stalk is opened on one side of the left and right sides of the front rotor, and communicates toward the rotor behind the left and right ends of the front rotor. The mouth is opened, the discharge port is opened at the left and right other ends of the rear rotor, and threshing while conveying the grain stem from the input port toward the communication port by the screw on the outer periphery of the rotor,
A technique has been proposed by the same applicant to transfer the powder to a rotor behind the communication port, to remove the grains while transporting the left and right directions in the rear rotor, and to completely remove the grains above the front of the sorting device.

[0005]

However, in a configuration in which the rotor of the threshing unit is accommodated in front of and above the sorting device, the grains can be dropped into the first half of the sorting device, but the threshing is performed by the threshing unit. When the remaining straw (culm) is dropped from the outlet at the end of the rotor at the rear, it is dropped on a sorting device where specific gravity sorting and wind sorting are performed, which deteriorates sorting performance. Was.

Further, since the front and rear rotors are configured to rotate in the same direction, they are lifted rearward and upward from the front rotor end and sent to the rear rotor through the communication port. In the upper part of the rear rotor, it is rotated so as to return to the communication port side, so that part of the grain stem may be pushed back to the front rotor by the rotation of the rear rotor,
The inheritance was not smooth. Further, in a configuration in which the front and rear rotors are rotated in the same direction, the winding directions of the screw blades of the rotors are reversed, so that versatility of the front and rear rotors cannot be achieved and the cost is increased.

[0007] Further, the communication port and the discharge port of the threshing unit are not enough to guide the cereal stalk if the mouth is simply opened, and they are easily clogged and cannot be passed on smoothly.

[0008]

The problems to be solved by the present invention are as described above. Next, means for solving the problems will be described. That is, in a general-purpose combine in which a screw-type rotor having a rotation axis in the left-right direction at the rear part of the mowing part is disposed in parallel in the front-rear direction, the rotation direction of the front rotor and the rotation direction of the rear rotor are reversed. Things. Further, the rotation axis of the rear rotor in the left-right direction is lower than the rotation axis of the front rotor.
Further, a screw type rotor having a rotation axis in the left-right direction is arranged in front and rear parallel to a rear part of the mowing part, and a substantially lower half of each of the front and rear rotors is covered with an arc-shaped receiving net. In a general-purpose combiner in which a substantially upper half portion is covered with a cover, one left and right sides of the front and rear rotors are communicated with a communication port, and a discharge port is formed at the other end of the rear rotor, the cover of the rear rotor cover is provided. The front side of the communication port side extends forward and upward from the outer peripheral surface of the rotor,
The rear surface of the cover of the rear rotor on the discharge port side extends rearward and upward from the outer peripheral surface of the rotor. In addition, a screw-type rotor having a rotation axis in the left-right direction is arranged above and in front of a sorting device of a general-purpose combiner, and a culm beater is arranged behind and behind a rear portion of the sorting device. In addition, a grain shedding guide extends from the rear part of the rotor toward the lower part of the culm beater. Further, the culm beater is disposed at a position behind the outlet, and the left and right width of the culm beater is longer than the left and right width of the outlet. Further, the outer diameter of the culm beater is smaller than the rotor diameter.

[0009]

Embodiments of the present invention will be described below in detail with reference to the drawings. 1 is a partial cross-sectional view of a general-purpose combiner, FIG. 2 is a cross-sectional side view of a threshing unit and a sorting device, FIG. 3 is a plan cross-sectional view of a threshing unit, FIG.
5 is a side sectional view of the same, FIG. 6 is a partial sectional view of a side view showing a maintenance configuration of a beater in the front of the machine frame, and FIG. 7 is a plan sectional view of another configuration of a second rotor for discharging culms from a threshing unit. , FIG. 8 is a side view partially sectional view of the fry conveyor, FIG. 9 is a plan view of the machine frame, FIG. 10 is a front view partially sectional view of a rotating configuration of a threshing unit opening / closing cover covering the right end of the rotor, FIG. 11 is a right side view in the traveling direction, and FIG. 12 is a right side view in the traveling direction with the threshing unit opening / closing cover opened.
3 is a front view showing a support structure of the upper cover, FIG. 14 is a side view showing a power transmission path to the threshing unit and the traveling device, and FIG.
FIG. 4 is a side view showing a power transmission path to the sorting device.

First, the general structure of a general-purpose combiner according to the present invention will be described with reference to FIGS. The machine frame 13 is mounted on the crawler type traveling device 1, and the sorting device 19, the threshing unit 18, and the engine 4 are mounted on the machine frame 13.
An engine room 49 for accommodating the oil tank 8 and the like is mounted and fixed, a grain tank 30 is arranged on the threshing unit 18, and a discharge auger 40 for discharging the grains stored in the grain tank 30 is provided on the side of the grain tank 30. Are located. Also, the reaper 8 protrudes forward from the machine frame 13. The reaping unit 8 stores the lateral feed auger 3 in the platform 2 in the left-right direction, and collects the grain stalks substantially at the center in the left-right direction by rotating. A cutting blade 4 is provided horizontally below the front end of the platform 2, and a raking reel 5 is disposed above and in front of the cutting blade 4. The rear part of the lifting link 6 is pivotally supported on the rear part on both sides of the platform 2, and the scraping reel 5 is rotatably supported at the front end of the lifting link 6,
The scraping reel 5 is rotationally driven by a hydraulic motor or the like. In addition, weeding plates 7 are disposed at the front ends on both sides of the platform 2.

A transport device 9 is disposed between the cutting section 8 and the threshing section 18, and the transport device 9 includes a feeder house 10.
The front end of the feeder house 10 is communicated with the feed end position of the screw blade of the traverse auger 3 slightly to the left with respect to the advancing direction from the left and right center of the rear part of the platform 2. I have. The rear end of the feeder house 10 is communicated with a threshing inlet 12, and a cylindrical beater 34 having a rotation axis in the left and right horizontal direction is arranged in the threshing inlet 12 to forcibly remove the grain culm from the threshing unit. 18 to send. Feeder house 10
The rear part is supported by the machine frame 13 so as to be vertically rotatable. A hydraulic cylinder (not shown) is interposed between the lower surface of the feeder house 10 and the machine frame 13,
The reaping unit 8 can be moved up and down. Further, a cabin 17 containing the driver's seat 15 and the steering handle 16 and the like is disposed above the feeder house 10 and the beater 34. The cabin 17 is disposed at an upper position in front of the left, right and center of the fuselage to improve visibility. , Making it easier to check the reaping work, and getting on and off from both left and right sides.

The feeder house 10 and the beater 3
The threshing inlet 4 and the threshing inlet 12 are provided on the left side in the advancing direction of the fuselage. The transfer is made rightward by the rotation of the rotor 21.

The beater 34 is housed in the upper front part of the machine frame 13. As shown in FIG. 6, an outlet 6 for taking out the beater 34 is provided on the left side surface of the machine frame 13.
A shaft support plate 65 is screwed with a bolt or the like so as to cover the outlet 64, and a pivot shaft of the beater 34 is supported at the center of the front and rear of the shaft support plate 65. By removing the bolt to which the shaft support plate 65 is screwed and removing the shaft support plate 65 from the machine frame 13, the beater 34 can be pulled out from the outlet 64 and maintenance can be performed.

A cleaning opening 66a for maintenance is opened in the front and rear part of the inclined plate 66 on the lower surface of the threshing inlet 12, and a lid 67 is provided to open and close the cleaning opening 66a. That is, one piece of the hinge 68 is fixed to the rear part of the cleaning port 66a, the other piece of the hinge 68 is fixed to the lower surface of the upper rear part of the lid 67, and the lid 67 is positioned below the fulcrum of the hinge 68 in the left-right direction. Is rotated. In the lower front part of the lid 67,
An edge 67a is formed to project forward and downward along the lower surface of the lid 67. When the cleaning opening 66a is closed by the lid 67, the edge 6a is formed.
7a is abutted on the lower surface of the inclined plate 66 immediately below the cleaning opening 66a, and the edge 67a is screwed to the inclined plate 66 using a bolt 69, so that the cleaning opening 66a is covered with the lid 67. . When performing maintenance, the inclined plate 6
The bolt 68 is removed using the opening 70 on the left side of the machine frame 13 below 6, and the lid 67 is rotated downward to open the cleaning port 66a, thereby performing maintenance of the beater 34.

As shown in FIGS. 1 to 3, the threshing unit 18 includes a first rotor (front rotor) 21, a second rotor (rear rotor) 22, receiving nets 23 and 24, and the like. 13 is stored in the upper part. The first rotor 21 and the second rotor 22 are formed in substantially the same shape, are formed in a screw type having screw blades 21a and 22a provided on the outer periphery of a cylinder, and the axis is directed in the left-right horizontal direction, They are arranged in front and rear parallel. In a threshing unit in which a rotor having an axis in the front-rear direction is arranged, the length is longer in the front-rear direction. The engine room 49 can be provided using the space above the rear part, and the layout can be efficiently performed.

Below the first rotor 21 and the second rotor 22, receiving nets 23 and 24 are disposed, respectively, and above the first rotor 21 and the second rotor 22 are upper cover 3 respectively.
5 and 36 are arranged to form a front rotor chamber and a rear rotor chamber. The upper covers 35 and 36 and the machine frame 13
A seal member 39 made of rubber, resin, or the like is interposed therebetween to seal.

Further, as shown in FIG. 9, the upper part of the machine frame 13 (upper machine frame 13a) is
9 (the lower machine frame 1).
3b), the first rotor 21 and the second rotor 2 are provided in the upper frame 13a.
And the rotating shafts 21 of the rotors 21 and 22 are accommodated.
d.22d is pivoted with a threshing cover. That is, the threshing unit is configured to be longer on the right side than the sorting device 19, and the protruding portion is a communication portion between the first rotor chamber and the second rotor chamber. Further, a power transmission section 110 composed of a belt or a pulley for transmitting power from the engine 48 to the first rotor 21 and the second rotor 22 is disposed on the left side surface of the upper machine frame 13a. Further, as shown in FIGS. 10 to 11, the side frame 77 is fixed on the upper machine frame 13 a to cover the right side surface of the first rotor 21, and the side frame 77 is provided.
The upper covers 35, 36 are pivotally supported via hinges 78, 78 and hinges 78 ', 78' at the upper end, and rotate upward with the upward rotation of the Glen tank 30 as described later. Supported.

As shown in FIGS. 10 to 12, the lower surface and the left side of the upper frame 13a of the first rotor 21 and the second rotor 22 are located below the right side of the first rotor 21 and the second rotor 22.
1 A threshing section opening / closing cover 94 having a substantially rectangular shape in front view and side view of the front of the right side and the rear of the right side of the second rotor 22.
Is provided to cover the front and rear surfaces, the right side surface, and the lower surface of the right side of the first rotor 21 and the second rotor 22. The upper part of the threshing unit opening / closing cover 94 is located on the upper machine frame 13.
a The recesses 94a and 94 are formed around the upper and lower portions of the left side surface (threshing cover) and around the rotating shafts 21d and 22d of the first rotor 21 and the second rotor 22 above the threshing unit opening and closing cover 94.
b is provided on the upper machine frame frame 13a.
Pivoting plates 13c and 13d as parts for pivoting 2d
To form the side of the upper machine frame 13a (threshing cover)
The first rotor 21 and the second rotor 2
The rigidity for pivotally supporting the two rotation shafts 21d and 22d is maintained.

Also, one piece of hinges 95, 95 is fixed to the upper part of the right side of the lower machine frame 13b just below the inner end of the lower part of the threshing unit opening / closing cover 94, and two hinges 95, 95 are fixed.
5 is fixed to the lower part of the threshing unit opening / closing cover 94, and the hinge 9
The upper part of the threshing unit opening / closing cover 94 is rotatable downwardly about the pivot point 5-5 in the front-rear direction. Further, a damper 96 made of a gas spring is interposed between the lower part of the machine frame 13 and the lower part of the threshing unit opening / closing cover 94, so that the threshing unit opening / closing cover 94 is assisted without a large force when rotating, Also, rapid rotation is prevented.

At the upper and lower central portions of the side surface of the threshing unit opening / closing cover 94, pivot brackets 97 are projectingly provided at two front and rear portions and two central portions.
Lock operating shaft 9 extending in the front-rear direction using 97 end
8 are pivoted. The ends of the lock operation shaft 98 extend further forward and backward from the front and rear ends of the threshing unit opening / closing cover 94, and hooks 99 are fixed to the ends. Engagement recesses 103 are fixed to the upper machine frame 13a inside the hooks 99, 99, and the hooks 99, 99 are moved into the engagement recesses 103, 103 by rotating the lock operation shaft 98. It is configured to be engaged and locked.

Further, a bracket 100 is fixedly mounted at the center of the lock operation shaft 98 in the front and rear direction.
A rod-shaped operation arm 101 is pivotally supported by providing a rotation fulcrum in the circumferential direction of the axis. An L-shaped storage guide plate 10 is provided on the side of the threshing unit opening / closing cover 94 below the operation arm 101.
2 is fixed, and the operation arm 101 is
When the operation arm 101 is arranged in the lock operation shaft 9
The rotation about the center 8 is restricted.

Therefore, when the operation arm 101 is rotated forward from the storage guide plate 102 as shown by a two-dot chain line in FIG. 11, when the operation arm 101 is pulled forward, the lock operation shaft 98 is rotated, and both ends are turned. The hooks 99, 99 of the parts are disengaged from the engagement recesses 103, 103 to be unlocked, and the threshing unit opening / closing cover 94 is pivoted downward and downward, as shown in FIG. .. Are released, the fixing bolts 104, 104,... Are removed, and the receiving nets 23, 24 are pulled out for maintenance or replacement. After the work, the receiving nets 23 and 24 are stored, the threshing unit opening / closing cover 94 is closed, and the operation arm 101 is rotated to engage the hooks 99 and 99 into the engagement recesses 103 and 103 to open and close the threshing unit. Upper frame 13 with cover 94
The opening 13e of a is closed.

With this configuration, the first rotor 2
Even if it is difficult to perform maintenance below the first rotor 22 and the second rotor 22, the receiving nets 23 and 24 are connected to the right side where the drive transmission unit for the first rotor 21 and the second rotor 22 is not disposed. The part can be opened and taken out, maintenance can be performed quickly, workability is improved, and the receiving nets 23 and 24 can be easily changed according to the variety, so that the threshing configuration is tailored to the variety to be harvested. The versatility is improved.

In addition, a rotor cleaning lid 35a is provided on a part of the front surface of the upper cover 35 having a substantially "U" shape in a side perspective view covering the upper part of the first rotor 21 so as to be openable and closable. FIG.
As shown in FIG.
The lower front part 5 is fixed rotatably with a hinge 73, and a hook 74 is projected upward above the rotor cleaning lid 35a so as to be able to engage with an engaging body 75 on the upper surface of the upper cover 35. Therefore, by the operation of releasing the engaging body 75, the hook 74 is disengaged, and the upper part of the rotor cleaning lid 35a is rotated forward about the left and right rotation fulcrum of the hinge 73,
The upper front part of the first rotor 21 is opened to perform internal maintenance. In addition, a cleaning lid may be provided on the rear surface of the second rotor 22 to perform internal maintenance from the rear upper portion of the second rotor 22.

As shown in FIGS. 2 to 4, the rear part of the right side of the receiving net 23 below the first rotor 21 is inclined in a gentle arc to the front low and rear high, and the upper and outer periphery of the second rotor 22 is formed. The communication portion 23a is formed to extend in the tangential direction, and the rear end of the communication portion 23a extends to near the front end of the rotation locus of the second rotor 22. Further, as shown in FIGS. 2 and 5, an outlet 24a is opened at the left rear portion of the receiving net 24.

The first rotor 21 and the second rotor 2
The upper covers 35 and 36 of the second rotor 22 are formed in a substantially “U” shape with the lower part opened in a side view. As shown in FIG. 22 extends in an arc shape from the upper end surface toward the rotating shaft 21d of the first rotor 21 to form a communication upper portion 36a, and the communication upper portion 3a.
The front end 6a extends to near the rear end of the rotation locus of the first rotor 21. In addition to the communication portion 23a, a communication port is formed to allow the threshing spaces of the first rotor 21 and the second rotor 22 to communicate with each other, and the opening of the communication port is enlarged. Further, the front and rear space between the first rotor 21 and the second rotor 22 is juxtaposed to be as short as possible to shorten the communication port, thereby reducing the space where the first rotor 21 and the second rotor 22 cannot operate. To improve inheritance performance.

Further, as shown in FIG.
The upper left end of the upper cover 36 extends rearward and upward away from the outer peripheral surface of the second rotor 22 to form a discharge upper opening 36b with a gentle inclination angle.
4a, the opening for discharging the straw is enlarged.
The communication upper portion 36a and the discharge upper opening 36b of the upper cover 36 are formed so as to gradually change from a substantially U-shape to an arc shape.

The upper cover 3 of the first rotor 21
A guide plate 37 having a substantially triangular shape in a side view is fixedly provided on the rear side of the inner peripheral surface (upstream in the rotation direction of the first rotor 21 described later) toward the outer peripheral surface of the first rotor 21. Similarly, the second rotor 21 is located on the front side of the inner peripheral surface of the upper cover 36 of the second rotor 22 (the upstream side in the rotation direction of the second rotor 22 described later).
A guide plate 38 having a substantially triangular shape in a side view is fixed to the outer peripheral surface of the stalk, and the bundle of grain culms carried by the first rotor 21 and the second rotor 22 is inverted to promote shedding.

Further, on the inner peripheral surface of the upper part of the upper cover 35, 36, which is formed in a substantially "U" shape, the dust feed valves 59, 59,. And is rotatably supported on the upper covers 35 and 36 so as to be rotatable around a vertical fulcrum. .., And the upper cover 36
Are individually rotated and operated,
The time for the cereal stem to move in the first rotor 21 and the time for the stalk to move in the second rotor 22 can be adjusted according to the type of the cereal culm and the state of the cereal culm. Thus, a general-purpose threshing unit 18 is configured.

The screw blade 2 of the first rotor 21
1a is formed from the left end of the first rotor 21 to the immediately left side of the communication portion 23a, and a plate-like feed projecting in the radial direction of the first rotor 21 is provided on the outer peripheral surface of the first rotor 21 in front of the communication portion 23a. The blades 21b are formed.
The number of the feed blades 21b is not limited, but three are formed in order to reduce the weight, reduce the number of parts, and increase the transfer efficiency. Similarly, the second rotor 22
The screw blade 21a is formed between the right end of the second rotor 22 and the right side of the discharge port 24a, and is provided on the outer peripheral surface of the second rotor 22 in front of the discharge port 24a on the left side of the terminal end of the screw rotor 22a. ··· 22b ··· are formed and the waste (threated culm) after threshing is sent to the blades 22b · 22
.. to be discharged from the discharge port 24a.

As shown in FIG. 3, screw blades 21a of the first rotor 21 (and the second rotor 22) are provided.
The drum 21c (drum 22c) to which the (screw blade 22a) and the feed blade 21b (feed blade 22b) are fixed is formed in a cylindrical shape, and the anti-winding plate 58 is provided in the left and right ends of the drum 21c (drum 22c).・ 58 are arranged.
As shown in FIG. 3, winding prevention plates 58 are fixedly provided on the inner peripheral surface of the machine frame 13 on the side of the position of the first rotor 21 (and the second rotor 22). The winding prevention plate 58 has a hole 58a at the center thereof into which the drive shaft of the first rotor 21 can be inserted, and is formed in a disk shape having an outer diameter substantially equal to the inner diameter of the drum 21c. Further, the outer peripheral portion of the winding prevention plate 58 is bent inward to form an edge 58b, and the edge 58b is inserted with a slight gap along the inner peripheral surface of the end of the drum 21c. This eliminates the gap between the inner peripheral surface of the machine frame 13 and the grain stem so that the cereal stem does not become entangled with the drive shaft of the first rotor 21 (and the second rotor 22).

The edge 58b of the wrap prevention plate 58 is not formed so as to cover the outer peripheral surface of the end of the drum 21c, but is inserted along the inner peripheral surface so that the end of the screw blade 21a is connected to the end of the drum 21c. To the first rotor 21
(And the second rotor 22) The grain culm conveyed to the end can be sent to the left and right direction by the screw blade 21a, and the grain culm does not stay on the first rotor 21 (and the second rotor 22). is there.

The first rotor 21 and the second rotor 22 have the same diameter, and the feed blades 21b, 21b,.
, And the feed blades 22b, 22b... Have the same shape, and in the present invention, the rotation direction of the first rotor 21 is counterclockwise as viewed from the left side in the traveling direction shown in FIG. By making the direction of rotation reverse clockwise,
The winding directions of the screw blades 21a and the screw blades 22a can be the same, and the first rotor 21 and the second rotor 22 can be made completely identical to each other to increase versatility and reduce costs. ing. Further, by making the rotation direction of the second rotor 22 clockwise, the grain culm conveyed rearward and upward at the end of the first rotor 21 can be inherited by the second rotor 22 with the conveyance direction being substantially the same direction, Easy to inherit.

The second rotor 22, the receiving net 24 covering the second rotor 22 and the upper cover 36 are arranged lower than the first rotor 21, the receiving net 23 and the upper cover 35. The connection at the communication port formed by the communication upper portion 36a and the communication portion 23a is smooth, improving threshing performance, and the lower upper cover 36 increases the volume of the Glen tank 30 disposed above the lower portion. can do.

In such a configuration, when the cut culm is sent from the feeder house 10 to the threshing inlet 12,
Due to the rotation of the first rotor 21, the harvested culm is shed while being transported rightward. Then, when reaching the right end of the first rotor 21, it is sent to the threshing space of the second rotor 22 from the communication portion 23 a formed in a gentle slope and the communication port formed by the communication upper portion 36 a. At this time, the grain stalk is lifted rearward and upward by the first rotor 21 rotating counterclockwise as viewed from the left side, and is sent to the threshing space of the second rotor 22 through the communication port. Can be sent to the front upper part of the second rotor 22 because the height position of the
Since the rotation direction of the second rotor 22 is clockwise, the conveying direction of the grain stalk can be inherited as it is rearward and upward, and the inheriting performance is good.

The particles are shed while being conveyed to the left by the rotation of the second rotor 22. Also, both screw blades 21a of the first rotor 21 and the second rotor 22
The cereal stem is bundled and spirally conveyed by 22a. The bundle of cereal stems comes into contact with the guide plates 37 and 38 to change the spiral conveying direction, or the screw blade 21a
-It is rubbed and inverted between 22a and promotes threshing of the bundle-like grain culm, and the grain culm can be surely threshed in the threshing unit 18 and the grain is fed to the lower half of the sorting device 19 below. It is surely dropped. When the remaining culm is sent to the left end of the second rotor 22, it is dropped from the discharge port 24a.

The culm dropped at the outlet 24a is
In order not to drop to the rear of the sorting device 19, the outlet 24a
The guide plate 60 extends rearward and downward from the lower part.

That is, as shown in FIGS. 2 and 3, the guide plate 60 extends to an intermediate position at the rear of the sorting device 19, and is located between the rear of the guide plate 60 and the bottom of the engine compartment 49. A culm beater 61 for forcibly sending the culm backward is provided. The culm beater 61
Is a compact and easy-to-assemble shape in which the outer diameter is smaller than the outer diameter of the rotors 21 and 22, the rotation speed of the culm beater 61 is higher than the rotation speed of the second rotor 22, and the peripheral speed of the culm beater 61. At a speed equal to or higher than that of the rotors 21 and 22 to enhance the ability to send out the culm backward.

The culm beater 61 is a cylindrical body having a rotating shaft on the left and right sides, and has a plurality of inverted V-shaped feed dogs 61a on its outer peripheral surface. . The left end of the culm beater 61 has an outlet 24.
a, the right end of the culm beater 61 extends further to the right than the right end of the discharge port 24a, and conveys the culm discharged from the discharge port 24a widely to the left and right. And is cut off by a plurality of hatch-shaped blades of the spreader 62 and discharged to the field from the rear end of the fuselage. It should be noted that the culm beater 61 forms feed teeth 61a, 61a,... Of an inverted V-shape when viewed from the side. Even in the case where the blades are provided, the blade can be similarly sent backward.

Further, as shown in FIG.
By fixing the right side of the feed vanes 22b ', 22b' ... fixed on the left side to the rear side in the rotation direction from the left side, the feed vanes 22b ', 22b' ... The culm can be directed toward the center from the discharge port 24a, and the culm is spread through the spreader 6 through the culm beater 61.
2, the spreadability of the culm beater 61 can be improved, and the entire width of the spreader 62 can be effectively used to discharge wider than the rear end of the fuselage. In addition, by forming the feed dog of the culm beater 61 in an inclined shape, the culm can be made to fly toward the right side of the spreader 62 so that the diffusibility by the culm beater 61 can be further improved.

Further, the guide plate 60 may be formed in a fence shape using a linear plate that is long in the front-rear and left-right directions.
By using a crumpling net guide formed by a crimping net to shed the grains and drop them downward, the grains are sent out backward by the culm beater 61 and at the same time, the culms are loosened and the grains remaining inside are separated.
9 to further improve the threshing accuracy.

As described above, the culm dropped from the discharge port 24a is forcibly sent out backward by the culm beater 61, so that the culm does not fall on the sorting device 19, and the sorting device is prevented. Thus, the sorting performance at 19 is not reduced.

The drive shaft 61b of the culm beater 61
Is a machine frame 1 for covering the left and right sides of the sorting device 19.
3 A drive shaft 61b pivotally supported on the left and right side surfaces of the lower portion and protruding rightward from the culm beater 61 is covered with the cylindrical body 71 so that culm, straw waste, and the like are not entangled to prevent a drive loss.

Further, as shown in FIG.
A sorting device (oscillating sorting device) 19 is disposed below, and the configuration thereof is such as a flowing grain plate 25, an oscillating body 50, a kara 27 for generating a sorting wind, and a left-handed sorted first item. The first conveyor 28 and the second conveyor 31 for transporting the second object
And so on. The first conveyor 28 and the second conveyor 31 are provided laterally behind the crawler traveling device 1 in a side view, and are connected to the left end of the first conveyor 28 and arranged in a vertical manner in a bucket-type ferry conveyor 29 or the like. The efficient layout is such that the reduction conveyor 32 continuously connected to the left end of the left end of the first conveyor 28 and the crawler traveling device 1 do not interfere with each other. Further, as shown in FIG. 1, the sorting device 19 is housed between the front and rear middle portions of the machine frame 14 and the rear portion thereof, and is used for traveling drive to the front portion of the machine frame 14 in front of the sorting device 19 and the rear lower position of the feeder house 10. , And the overall length can be shortened as an efficient layout.

The swing main body 50 is connected to 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 51. A grain pan 50a is formed in the front part of the swinging main body 50 for receiving the grain stalks dropped below the first rotor 21 and the second rotor 22. The grain bread 50
“a” is formed in a wavy shape in a side view, and is conveyed backward by the swing of the swing body 50. A screen 52 is connected to the rear end of the grain pan 50a. A chaff portion composed of a plurality of chaff fins extending in the width direction of the swing main body 50 is arranged from below the screen 52 to the rear end of the swing main body 50. The chaff portion includes a movable chaff 53 in which the front lowering inclination angle of the chaff fin changes according to the amount of grain culled from the front side, a manual chaff 54 in which the front lowering inclination angle of the chaff fin changes manually, and a front lowering inclination angle of the chaff fin. Are fixed to the fixed chaff 55. The bottom surface of the swinging body 50 below the chaff portion has an opening 55b and is covered with a crimp net (not shown).

The grain pan 5 of the swing body 50
A Kara-min 27 is horizontally installed below the front and rear part of the 0a, a sorting wind is sent backward according to the guide, and a sorting wind is sent into the swinging body 50 from the falling port 55b and the like, and specific gravity sorting and wind sorting are performed in the chaff portion. And sort them into the first and second ones.

With the above configuration, the first rotor 21
The grains, straw chips and the like dropped from the receiving nets 23 and 24 of the second rotor 22 are received on the grain pan 50a of the swinging main body 50 and are conveyed rearward. And grain bread 5
0a, it is bounced backward by the squeeze line 52 from the rear, or is dropped on the chaff as it is to perform specific gravity sorting and wind sorting, but as described above, culms and the like fall from the rear end of the threshing unit 18 Since there is no flow, the flow on the chaff section where the sorting is performed becomes smooth and the sorting performance is improved, so that even if a large amount of grain culm is threshed at a time, it can be surely processed by the sorting device 19. is there. Then, the second product is moved from the second conveyor 31 via the reduction conveyor 32 to the swinging main body 5.
Drop it on the middle part before and after the 0 grain pan 50a,
Sorting is performed again, and the first thing that has been completely sorted is dropped onto the first conveyor 28, transported upward by the fry conveyor 29, and stored in the Glen tank 30.

Next, the fried conveyor 29 will be described. As shown in FIG. 8 and FIG.
And the second conveyor 31, an elevating conveyor 29 is set up from the side of the second conveyor 31, and extends to the upper left side of the Glen tank 30. An arc-shaped receiving portion 29a is formed at the lower portion of the fried conveyor 29, and the left end of the conveyor 28 is communicated with the front portion of the receiving portion 29a. The above-mentioned fried conveyor 2
9, a driving sprocket 80 having a driving shaft on the left and right is rotatably supported at the rear position of the first conveyor 28 at the lower part, and a driven sprocket 81 having a rotating shaft on the left and right is rotatably supported on the upper part of the conveyor 29. Buckets 82, 82,... At appropriate intervals between the sprocket 80 and the driven sprocket 81.
The chain (or belt) 83 with the fixed. Is wound. The casing around the driven sprocket 81 on the top of the conveyor 29 is divided at a position directly below the driven sprocket 81, and a chute 85 extending to the upper surface on the left side of the Glen tank 30 is formed. The tank 30 is communicated.

When the driving sprocket 80 is driven, the conveyor 28 is moved from the first conveyor 28 to the conveyor 29.
.., Which are conveyed to the lower portion and collected in the receiving portion 29a, are pumped up by the buckets 82, 82,... Formed in a cup shape, conveyed upward, turned at the position of the driven sprocket 81, and centrifuged. The grains in the bucket 82 are fed into the chute 85 in front by force, and the grains are stored in the Glen tank 30. In addition, the most thing is not caught between the casing of the fry conveyor 29 during the transportation by the bucket 82, so that there is no damage as in the screw type conveyor.

The chute portion 85 is fixed to the Glen tank 30 side, and even if the Glen tank 30 is rotated as described later, only the chute portion 85 is disengaged from the fry conveyor 29 and rotates. In addition, the work of disconnecting the grain conveyor 30 from the Glen tank 30 is not required. In addition, the bucket 82
A seal member 352 such as a sponge is fixedly mounted on the upper part of the casing on which the chain 83 on which the chain 83 is fixed is mounted, and the lower rear portion of the chute portion 85 is sealed when the Glen tank 30 is in a horizontal working position. , And the sealing performance of the grain conveyor 29 is improved, so that the grains to be conveyed do not leak.

Next, the shape and support structure of the Glen tank 30 will be described. As shown in FIGS. 1 and 9, the Glen tank 30 is formed in a substantially square shape when viewed from the front, and as shown in a side view shown in FIG. 1, the lower part of the Glen tank 30 is formed in a substantially inverted triangle shape. The lower portion of the Glen tank 30 which is the top of the inverted triangular shape is disposed between the upper covers 35 and 36 of the first rotor 21 and the second rotor 22,
The shape effectively uses the space. A rotary auger 42 is formed in the upper right portion of the Glen tank 30 in an inclined shape, and a rotating auger 42 is provided immediately above this portion at a storage position of the discharge auger 40 in the front-rear direction.

The right lower portion of the Glen tank 30 is swelled downward, extends to the upper side of the first rotor 21 and the upper portion of the second rotor 22, and has a shaft center in front and rear at this portion. A screw-type lateral feed conveyor 89 is supported on the left and right along the lower part of the inverted triangular Glen tank 30. Therefore, all the grain stalks are guided along the inclined surface formed in the inverted triangular shape in the Glen tank 30 to the tub portion storing the transverse feed conveyor 89, and the drive of the transverse feed conveyor 89 causes the right discharge conveyor 88 to rotate. That is, it is inherited in the middle part in the front and rear direction and is discharged outside the apparatus via the discharge auger 40. The Glen tank 30
The storage position of the lower right discharge conveyor 88 is the first rotor 21.
And the right side of the second rotor 22, but as shown in FIG. 10, it is above the turning trajectory of the threshing unit opening / closing cover 94, so that the threshing unit opening / closing cover 94 does not interfere.

Also, a rigid support (not shown) having high rigidity is formed at the lower front portion of the Glen tank 30 just before the front end of the discharge conveyor 88 and at the position of the discharge conveyor 88 at the lower rear portion of the Glen tank 30. The Glen tank 30 is fixed on the frame 13 and can be rotated around the rotation axis of the discharge conveyor 88.

The Glen tank 30 can be automatically rotated upward by interposing a lift actuator (not shown) between the middle part of the Glen tank 30 and the machine frame 13. Further, a bracket 91 is fixed to the lower surface of the Glen tank 30, and the bracket 91 and the upper cover 35 are fixed.
By connecting between the left end portion and the arm 92, the upper cover 35 together with the Glen tank 30 can be rotated about the pivot shaft of the hinge 78 as shown in FIGS. As shown in FIG. 13, the upper cover 36 includes a fixed cover portion 36d on the right side in the traveling direction including the communication upper portion 36a and a rotating cover portion 36c extending leftward from the left end of the fixed cover portion 36d. Has been split. The upper left end of the fixed cover portion 36d and the upper right end of the rotating cover portion 36c are pivotally supported via hinges 78 '. By connecting the left end of the fixed cover portion 36d and the lower surface of the Glen tank 30 via an arm (not shown) or the like, as shown in FIG. Then, it is pivoted upward.

Therefore, even when the Glen tank 30 is arranged above the threshing unit 18, maintenance can be performed from above the threshing unit 18 because the Glen tank 30 is configured to be rotatable upward. Further, as the Glen tank 30 rotates, the upper cover 35.
6, the first rotor 21 and the second rotor 22 are opened, and the maintenance of the inside can be easily performed.

Next, the power transmission structure in the threshing unit 18 will be described. As shown in FIG.
The engine 48 is mounted above the rear part of the engine 3 and the engine 4
An output shaft 8 protrudes leftward, and a drive pulley 160 is fixedly provided on the left side of the left side of the machine frame 13. Also,
A gear case 161 is fixed to the machine frame 13 on the left side of the rotation shaft 22 d of the second rotor 22.
61, a pulley shaft 162a is supported.
A second rotor input pulley 162 and a small-diameter transmission pulley 166 are fixedly mounted on a. Further, the first rotor 21
The left end of the rotating shaft 21d protrudes leftward from the machine frame 13, and the first rotor input pulley 163 and the transmission pulley 168 are fixed to the end. The pivot 3 of the beater 34
A beater transmission pulley 164 is fixed to the left end of 4a.

A belt 165 is wound between the driving pulley 160 and the second rotor transmission pulley 162, and a belt 169 is wound between the transmission pulley 166 and the first rotor input pulley 163. The belt 170 is wound around the beater transmission pulley 164 to form a threshing drive transmission path, and the second rotor 22, the first rotor 21, and the beater 34 are linked. The pulley shaft 16
2a and the rotating shaft 22d are linked by a gear (not shown) in the gear case 161 to transmit reverse rotation to the rotating shaft 22d to rotate the second rotor 22 reversely with respect to the first rotor 21 as described above. ing.

The transmission pulley 166 is a double pulley, and a belt 178 is wound between the transmission pulley 166 and a discharge culm beater input pulley 177 at the left end of the drive shaft 61b of the discharge culm beater 61. The culm beater 61 is driven in conjunction with the first rotor 21 and the second rotor 22.

A driven pulley 171 is rotatably supported below the front and rear portions of the machine frame 13 so that the machine frame 1
A traveling transmission shaft 172 is supported at the lower part of the front surface of the vehicle 3, and a traveling input pulley 174 is fixedly provided at the left end of the traveling transmission shaft 172. The traveling input pulley 174 is interlocked with the transmission device 45 from the right end of the traveling transmission shaft 172. The driving pulley 160 is a multiple pulley, the driven pulley 171 is a double pulley,
The belt 173 is wound around the driving pulley 160 and the driven pulley 171 while being tensioned by the tension roller 167, and the belt 176 is wound between the driven pulley 171 and the traveling input pulley 174 while being tensioned by the tension pulley 175. It is turned to form a traveling drive transmission path. The driving force of the engine 48 is transmitted into the transmission device 45 via the driving power transmission path, the transmission speed of the transmission is changed by the transmission device 45, and the driving force is transmitted to the crawler traveling device 1.1.

As described above, the power transmission section 110 is formed on the left side surface of the machine frame 13 by the traveling drive transmission path and the threshing drive transmission path. Further, a drive belt 154 described later is wound around the culm beater input pulley 177, and a driving force is transmitted to the leveling conveyor 140 in the upper portion of the Glen tank 30.

As shown in FIG. 3, the right end of the drive shaft 61b of the culm beater 61 projects laterally from the left side of the machine frame 13. The right end of the drive shaft 61b has a sorting device transmission pulley. 188 are fixed. As shown in FIG. 15, the separation device transmission pulley 188 is also a double pulley, and the rear spreader 6 is connected via a belt 179.
2 is transmitted to a pulley 180 that drives the second pulley 180. Also,
Each rotating shaft 2 of the first conveyor 28 and the second conveyor 31
Pulleys 181 and 182 are fixed to the right ends of 8a and 31a projecting rightward from the right side of the machine frame 13. Between the pulleys 181 and 182, a sprocket shaft 80 of a fry driving sprocket 80 of the fry conveyor 29
a A pulley 183 at the right end is disposed, and these pulleys 1
A belt 185 is wound between and interlocked with 88.181.182.183.

Further, a Karino input pulley 184 for driving Karino 27 is arranged at the lower front part of the machine frame 13.
A belt 186 is wound between the pulley 181 of the first conveyor 28 and the Karino input pulley 184 to transmit the driving force. The pulley 1 of the second conveyor 31
Driving force is transmitted from 82 to the swing link mechanism 51 of the swing main body 50 via the belt 187. As described above, the sorting device drive transmission path is formed on the right side of the machine frame 13. Therefore, the drive transmission paths are provided separately on the left side and the right side of the machine frame 13, so that maintenance is easily performed.

[0063]

The present invention is configured as described above.
The following effects are obtained. That is, in a general-purpose combiner in which screw-type rotors having a rotation axis in the left-right direction are arranged in front and rear parallel to the rear part of the mowing part, the rotation direction of the front rotor and the rotation direction of the rear rotor And the reverse rotation, so that the harvested grain culm cut in the cutting section is thrown into the front rotor, transported to the left and right ends while being threshed, and obliquely rearward to be inherited by the rear rotor. In the past, since the rear rotor was conventionally rotated in the same direction as the front rotor, it was rotated by the rotation so as to return some grain culm to the front rotor side, and the passing accuracy was deteriorated However, by rotating the rear rotor in the opposite direction to the front rotor, the grain culm sent diagonally backward is smoothly drawn in, so the inheritance accuracy is improved and the flow of the grain culm in the threshing unit is smooth. Threshing accuracy will be over the scan is being improved.

Further, since the rotation axis in the left-right direction of the rear rotor is lower than the rotation axis of the front rotor, the transfer from the front rotor to the rear rotor is smooth. There are no problems such as grain stagnation staying in the front rotor and crushed culms, and threshing and sorting accuracy are improved.

Further, a screw type rotor having a rotation axis in the left-right direction is arranged in front and rear parallel to the rear part of the mowing part, and a substantially lower half of each of the front and rear rotors is formed in an arc shape. Covering the upper half of each rotor with a cover, providing a threshing inlet in front of one side of the front rotor, and connecting the other rear part of the front rotor and the other front part of the rear rotor. In a general-purpose combiner having a discharge port formed at one side rear portion of the rear rotor, a cover above the communication port is formed in an arc shape extending from above the rear rotor to a substantially rotation axis of the front rotor, and is provided below the communication port. Since the receiving net is formed in an arc shape extending tangentially to the outer periphery of the rear rotor from below the front rotor, the space for communicating the front rotor and the rear rotor is increased, so that the flow of the grain can be smooth and loose. Since it becomes inclined, the rotor from the front to the rear Inheritance of has become a good. In addition, the discharge port is also large, and the husks that have been threshed can be smoothly discharged without staying at the rear end of the rotor, thereby improving the threshing processing capacity.

Further, a screw type rotor having a rotation axis in the left-right direction is disposed in front of and above the sorting device of the general-purpose combiner, and is disposed above the rear portion of the sorting device behind the rotor. Since the culm beater is arranged, the rotor is arranged on the left and right and stored above the front part of the sorting device, even if the rear of the threshing unit is used effectively, without dropping the culm after threshing to the sorting device It can be discharged out of the machine from the rear part of the fuselage, and the burden on the sorting device can be reduced and the sorting ability can be increased.

Further, since the threshing treatment guide is extended downward from the rear part of the rotor toward the lower part of the culm beater, a large amount of cereal culm is thrown into the threshing part at one time, and the cereal grains enter the culm. Even if it is mixed and discharged from the threshing part, it is sent out backward by the culm beater and at the same time, the culm is loosened and the grains contained inside are dropped on the sorting device from the threshing process guide, further improving threshing accuracy It can also be done. Then, only the excreted culm from which the grain has been taken out is conveyed backward without being dropped onto the sorting device and discharged outside the machine, so that the sorting accuracy is also improved.

Further, since the culm beater is disposed at a position rearward of the discharge port and the left and right widths of the culm beater are made longer than the left and right widths of the discharge port, the culm beater is discharged from the discharge port. The culms can be reliably transported backwards,
It can be diffused so that it can be conveyed backward and left widely.

Further, since the outer diameter of the culm beater is made smaller than the diameter of the rotor, it is compact and easy to handle at the time of maintenance, and is arranged in a limited space above the sorting device. be able to.

[Brief description of the drawings]

FIG. 1 is an overall side view and a partial cross-sectional view of a general-purpose combine.

FIG. 2 is a side sectional view of a threshing unit and a sorting device.

FIG. 3 is a plan sectional view of a threshing unit.

FIG. 4 is a side sectional view of a threshing unit.

FIG. 5 is a side sectional view of the same.

FIG. 6 is a side view partially sectional view showing a maintenance configuration of a beater in a front portion of the machine frame.

FIG. 7 is a plan cross-sectional view of another configuration of the second rotor that discharges culms from the threshing unit.

FIG. 8 is a side view and a partial cross-sectional view of the fry conveyor.

FIG. 9 is a plan view of the machine frame.

FIG. 10 is a front view, partly in section, of a rotating configuration of a threshing unit opening / closing cover that covers the right end of the rotor.

FIG. 11 is a right side view of the traveling direction.

FIG. 12 is a right side view in the traveling direction with a threshing unit opening / closing cover opened.

FIG. 13 is a front view showing a support configuration of the upper cover.

FIG. 14 is a side view showing a power transmission path to the threshing unit and the traveling device.

FIG. 15 is a side view showing a power transmission path to the sorting device.

[Explanation of symbols]

 8 Cutting part 18 Threshing part 19 Sorting device 21 First rotor 22 Second rotor 23 Receiving net 23a Communication port 24 Receiving net 24a Discharge port 30 Glen tank 35 Upper cover 36 Upper cover 36a Communication upper part 36b Discharge upper port 60 Guide plate (threshing) Processing guide) 61 culm beater

 ────────────────────────────────────────────────── ─── Continuing on the front page (72) Munori Miyamoto 1-32 Chayamachi, Kita-ku, Osaka-shi, Osaka Prefecture F-term in Yanmar Agricultural Machinery Co., Ltd. EA05 EC01 EC07 HA04 HB03 2B095 AA01 AA02 AA08 AA13 AA28 BA03 BA11 BA21 BA32 CA02 CA04

Claims (7)

[Claims] 1. A general-purpose combiner in which a screw-type rotor having a rotation axis in the left-right direction is arranged in front and rear parallel to a rear portion of a mowing unit, wherein a rotation direction of a front rotor and a rotation direction of a rear rotor are opposite to each other. Threshing unit for general purpose combine. 2. The threshing unit according to claim 1, wherein the height of the rotation axis of the rear rotor is lower than the rotation axis of the front rotor. 3. A screw type rotor having a rotation axis in the left-right direction is disposed in a front-rear direction parallel to a rear portion of the reaper, and substantially lower halves of the front and rear rotors are covered with an arc-shaped receiving net. The upper half of each rotor is covered with a cover, a threshing inlet is provided in front of one side of the front rotor, and the rear side of the other side of the front rotor and the front side of the other side of the rear rotor communicate with each other through a communication port. In a general-purpose combiner having a discharge port formed at the rear side of one side, a cover above the communication port is formed in an arc shape extending from above the rear rotor to a substantially rotation axis of the front rotor, and a receiving net below the communication port is formed below the front rotor. A threshing section of a general-purpose combine, characterized in that it has an arc shape extending tangentially to the outer periphery of the rear rotor. 4. A general-purpose combiner in which a screw-type rotor having a rotation axis in the left-right direction is arranged at the rear part of the reaper in a front-rear direction, and has a rotation axis in the left-right direction at an outlet at the rear part of the rear rotor. Threshing section of a general-purpose combine, which has a culm beater. 5. A shredding treatment guide is provided from a position below the discharge port to a position below a culm beater, and the shredding treatment guide is arranged above a sorting device.
Threshing unit of the general-purpose combine described. 6. The threshing part of a general-purpose combiner according to claim 4, wherein the left and right widths of the discharge ports arranged at the rear position of the culm beater are longer than the left and right widths of the culm beater. 7. The general-purpose combiner according to claim 4, wherein an outer diameter of the culm beater is smaller than a rotor diameter, and a rotation number of the culm beater is equal to or greater than a rotation number of the rear rotor. Threshing department.