JPH09140247A - Threshing apparatus of combine harvester - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve the screening performance of a swinging screening disk for the screening of threshed product. SOLUTION: This threshing apparatus of a combine harvester is provided with a swinging screening disk 25 under a threshing chamber. Front and rear feed pans 26, 27 are placed at the front part of the swinging screening disk 25 in a state stacked above and below. A sieving wire 28 is placed at the rear end of the front feed pan 26 and screening wind is applied to the sieving wire 28 with a prefan 31 place below the front feed pan 26.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a combine threshing device in which threshing-processed grains in a handling room are sorted by an oscillating sorting disc below.

[0002]

In the conventional rocking sorter disc, the feed pan is formed as a single plate, and the chaff sheave is connected to the rear end of the feed pan. However, in the case of such a structure, the sorting width is narrow, and dust such as straw dust is lumpy and difficult to disperse, and this tendency becomes more noticeable as the capacity is increased, especially when cutting more than 5 rows. There was a problem of lowering the sorting accuracy.

[0003]

SUMMARY OF THE INVENTION Therefore, according to the present invention, in a combine threshing device provided with a rocking sorter below the handling chamber, front and rear feed pans are arranged in a two-stage upper and lower manner at the front of the swing sorter. In addition, a sieving line is arranged at the rear end of the front feed pan, and a pre-fan for acting a sorting wind on the sieving line is arranged below the front feed pan to effectively expand the sorting area in the feed pan. The sorting air from the pre-fan is satisfactorily applied to the grains and dust dispersed by the sieving action of the sieving line to improve the sorting performance.

Further, a No. 2 reduction device for reducing the No. 2 reduced product above the sieving line is provided to promote the dispersion of grains and dusts of the No. 2 reduced product, and to improve the processing capacity and the sorting performance of this sorting board. To improve.

Further, a chaff sheave continuously provided at the rear end of the rear feed pan and a blower device for acting a selective air flow between the lower sheave and the lower sheave of the rear sheave are provided at the rear of the pre-fan to prevent the falling objects leaking from the chaff sheave and the Glen sieve. The sorting air from the main blower is applied to further improve the sorting accuracy.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described in detail below with reference to the drawings. FIG. 1 is a side view of the swing selecting section, and FIG.
FIG. 3 is an overall side view of the combine, FIG. 3 is a plan view of the combine, in which (1) is a track frame on which the traveling crawler (2) is mounted, (3) is a machine frame installed on the track frame (1), (4) is a threshing unit, which is a threshing machine in which the feed chain (5) is stretched to the left side and which incorporates a handling cylinder (6) and a processing cylinder (7), and (8) is a cutting blade (9) and a grain culm. Transport mechanism (10)
A reaper with a reaper, (11) a reaper frame (12)
A hydraulic cylinder that raises and lowers the reaper (8) via
3) a straw processing unit that faces the end of the straw chain (14);
(15) is a grain tank for carrying the grains from the threshing unit (4) via a fryer (16), and (17) is a grain tank (1).
A discharge auger for discharging the grain of 5) to the outside of the machine, (18) is a driving cabin provided with a driving operation unit (19) and a driver's seat (20), and (21) is an engine provided below the driving cabin (18). , It is configured to continuously cut grain culms and thresh them.

Further, as shown in FIG. 4, reference numeral (22) in the drawing is a handling room in which an axial flow type handling barrel (6) axially mounted in the longitudinal direction of the machine is installed, and (23) is the handling room ( 22) a mouth for inserting a grain culm, (24) a crimp net stretched under the handling room (22), and (25) a front end facing the crimp net (24) and swinging in the front-back direction. An oscillating sorting board which is movably supported, (26) and (27) are front and rear feed pans of a sorting board (25) which is arranged below the crimp net (24) in two stages, upper and lower, and (28) is a front feed pan. (26) A sorting sieve line provided on the rear end side so as to be vertically swingable, (29) a chaff sheave continuously provided behind the rear end of the rear feed pan (27), (30)
Is a Glen Sheave disposed below the chaff sheave (29),
(31) is a dust fan which is a pre-fan which feeds a sorting wind between upper and lower feed pans (26) and (27).
2) is Kara Minoh, which is the main air blower that sends the sorting air between the chaff sheave (29) and the Glen sieve (30) and below the Glen sieve (30), and (33) is the grain tank that is connected to the fried cylinder (16). No. 1 conveyor for taking out grains to (15), (34) returns No. 2 product to above the sieving line (28) of the sorting board (25) through No. 2 reduction conveyor (35) which is No. 2 reduction device. No. 2 conveyor, (36) is a dust suction fan disposed above the rear end of the sorting board (25), and swings the grains threshed by the handling cylinder (6) and the processing cylinder (7). The grain is sorted by the sorting board (25), and only the sized particles are taken out to the grain tank (15), and the straw is discharged from the straw chain (1).
It is configured to be sent to the straw processing unit (13) via 4) to be discharged to the outside of the machine after being cut by the straw cutter (37).

As shown in FIGS. 5 to 6, the sieving line (2
In 8), a wire rod (28a) having a round cross section is bent and formed in a gate shape, and a sieve screen receiver (39) fixed to the swing shaft (28) of the sorting disc (25) is attached to the sorting disc (25). ), The wire bodies (28a) are fixed in a comb-like shape substantially evenly, and the swing shaft (28a) is rotatably provided between the left and right side walls (25a) (25a) of the sorting board (25). 38) through which the swing shaft (38) is supported.
The retainer plate (40) and bolts (4)
The proximal end of the sieving line (28) is fixedly attached via 1).

Further, the rocking sorter disc (25) rotatably supports the rear roller (42) on the threshing side plate (43) via the rocking drive shaft (44) and the crank shaft (45), and The roller (47) on the front side of the sorting board (25) is fitted and supported by a guide rail (46) having a U-shaped cross section that is inclined and fixed to the inner surface of the threshing side plate (43) in a front-rear-rear-high manner, and the drive is performed. When the shaft (44) is rotating, the rear side of the sorting board (25) is connected to the shaft (4
4) Circular movement centered around the guide rail (4
6), the sorting board (25) is swung back and forth and up and down with an elliptical locus (48) having a small vertical width and a large front and rear width.

Then, a guide rail (4) having a U-shaped cross section is fixed to the inner surface of the left threshing side plate (43) so as to be inclined forwardly and downwardly.
The oscillating roller (50) of the sieving line (28) is fitted to the sieving line (9), and a long hole (52) is provided at the tip of an oscillating arm (51) fixed to the left end of the oscillating shaft (38). ) To engage and support the roller shaft (53) of the swing roller (50),
When the sorting board (25) swings, the swing roller (50) is caused to move linearly along the guide rail (49) to swing the swing arm (5).
1) is swung around the shaft (38) to move the sieving line (2
It is configured so as to swing up and down around the shaft (38) of 8).

Further, the dust-discharging fan (31) is provided below the front feed pan (26) and in front of the Karako (32), and is located outside the Karoh case (54) of the Karoh (32) and the front feed. A dust fan (3
The fan case (55) of 1) is provided to open a blower port (56) between the front and rear feed pans (26) and (27), while the rear feed pan (2) is provided above the Karako (32).
7) is provided, and the air blower openings (57a) (57b) for feeding the sorting air between the chaff sheave (29) and the Glen sieve (30) and below the Glen sheave (30) are respectively provided in the Karako (3).
2) is installed in the upper part and the rear part of the sieve line (28) and directly through the crimp net (24) to the grain and dust falling from the dusting fan (31) to select air and chaff sieve (29). The sorting wind from the Karato (32) is individually applied to the grains and dust falling from the grain sheave (30) to stabilize the sorting performance. Further, the upper and lower sieving action of the sieving line (28) can promote the dispersion of grains and dust in the rear feed pan (27) and the chaff sieve (29), and the sieving line (2
8) The return port (35) of the second return conveyor (35)
In view of a), the second reduction product is also dispersed so that a large amount of grain can be effectively treated within a limited sorting width.

As shown in FIGS. 7 to 8, the reaping section (8) has a raising tine (59) for raising the uncut grain culms which are taken in through the sward plate (58), and a six-row raising case. (60), a star wheel (61) and a scraping belt (62) for scraping the culm side and the tip side of the raised culm, and a cutting blade (9) for cutting the culm side when scraping.
And a lower right transport chain (63) that conveys the culm side of the two right-sided grain culms after cutting to the left diagonally rearward, and conveys the tip side of the two right-sided grain culms toward the diagonally leftward rearward. An upper right transport body (64) having an upper right transport tine (64a) and a center 2
A central lower transport chain (65) and a central upper transport tine that join the culm side and the tip side of the grain culms to the vicinity of the feeding intermediate positions of the rear lower right transport chain (63) and the upper right transport body (64). Central upper carrier (6a)
6) and the left lower transfer chain (67) that joins the culm side and the tip side of the two left-sided grain culms near the feed end positions of the lower right transfer chain (63) and the upper right transfer body (64), and Upper left transporter (6) having upper left transport tine (68a)
8) and the vertical transfer chain (6) for transferring and transferring the culm side of the six grain culms that join the feed end of the lower right transfer chain (63) to the feed start end of the feed chain (5).
9) and a rear upper transport body (70) having a rear upper transport tine (70a) for transporting the tip side of the grain culms for 6 rows, which joins the feed end of the right upper transport body (64), toward the threshing inlet.
And the rear upper carrier (70) and the vertical carrier chain (69)
An auxiliary transport chain (71) which is provided at a substantially central position in the vertical direction between the feeding end portions of and to allow the feed chain (5) to inherit the grain culms in an appropriate posture, and the upper transport bodies (64) (66).
Right / center / left tip transport tines (72a) that are provided at the opposite position above (68) and transport slightly below the ear of the culm.
(73a) and (74a) are respectively provided on the right, center, and left tip transporters (72), (73), and (74). 63)
(65) (67) and each carrier (64) (66) (6)
It is configured such that it is passed through and merged with the vertical transport chain (69) via 8) and supplied to the threshing unit (4) for threshing processing.

As shown in FIG. 9 to FIG. 11, the tip carrier (72) (73) (74) and the upper carrier (64).
(66) The feed tines of (68) and (68) are provided so as to face each other, and the transport tines (64a) (72a) and (66a) of each combination are provided.
(73a), (68a), and (74a) are made to have the same feed direction, and the raising input shaft (76) of the raising input pipe (75) that is erected on the cutting frame (12) raises the raising case ( 60) The input shaft (8) of each carrier (72) (73) (74) through the horizontal drive shaft (78) of the horizontal drive case (77) at the upper end and the branch shaft (80) of the branch case (79).
1) (82) and (83) are interlockingly connected.

The branch cases (79) are provided on the upper back side of the raising cases (60) respectively to drive the raising tines (59) of the cases (60).
An output shaft (8) for driving the tine chain (84) of the tine (59) by raising the upper end of each case (60) to the lateral drive case (77) and connecting it to the lower end of the case (60).
5) is provided, the upper end of the branch shaft (80) in the branch case (79) is connected to the lateral drive shaft (78) via a pair of bevel gears (86), and the lower end is connected to the output shaft (85) to a pair of bevel gears (85). 87) and are connected to each other to drive the raising tines 59 of each raising case 60.

The tip transfer bodies (72) (73) (74) are connected and supported at the lower ends of the second and third branch cases (79) from the left side and the right side, respectively. 72) (73) (74) input shaft (81) (8
2) (83) is interlockingly connected to each output shaft (85) through a universal joint (88), and each tip transport tine (72a) (7).
3a) and (74a) are respectively driven.

Thus, in plan view, each upper carrier (64) (6)
6) The tip carrier (72) (73) at the position facing (68).
(74) are arranged so that the tines (64a), (72a), (66a), (73a), and (68) that are in a mutually opposing relationship.
a) By making the feeding directions of (74a) the same, the pulling action force toward the rear of the grain culm caught in the raising case (60) is increased, and the tip transport tines (7) are used.
2a) (73a) (74a) conveys a position slightly below the ear of the grain culm to reduce shedding, and raises each tip end carrier (72) (73) near the lower position of the drive case (77).
(74) is arranged to increase the pulling action force of the grain culms caught on the drive case (77), and the upper and lower carrier bodies (6
3) to (68), the Y-shaped transport path (89) is configured to allow smooth transport of grain culms without catching.

[0017]

As is apparent from the above embodiments, the present invention is a combine threshing device provided with a rocking sorting board (25) below a handling chamber (22), and a front portion of the rocking sorting board (25). The front and rear feed pans (26) and (27) are arranged in the upper and lower two stages, and the sieving line (2) is provided at the rear end of the front feed pan (26).
8) is provided, and a pre-fan (31) for applying sorting air to the sieving line (28) is attached to the front feed pan (26).
Since it is arranged below, the feed pan (26)
The sorting area in (27) can be effectively expanded, and the sorting air from the pre-fan (31) can be effectively applied to the grains and dust dispersed by the sieving action of the sieving line (28) to improve the sorting performance. It can be done.

Since the No. 2 reducing device (35) for reducing the No. 2 reduced product is provided above the sieving line (28), the No. 2 reduced product is promoted to disperse grains and dust, The processing capacity of the sorting board (25) can improve the sorting performance.

Further, a pre-fan is provided with a blower (32) for exerting a selective air flow between the chaff sheave (29) connected to the rear end of the rear feed pan (27) and the lower sheave (30) and below the lower sheave (30). (31) Since it is provided on the rear side, the sorting wind from the main air blower (32) acts on the falling objects leaking from the chaff sheave (29) and the Glen sieve (30) to further improve the sorting accuracy. There is a remarkable effect that can be made.

[Brief description of the drawings]

FIG. 1 is a side view of a swing selection unit.

FIG. 2 is an overall side view of the combine.

FIG. 3 is an overall plan view of the combine.

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

FIG. 5 is an explanatory plan view of a sieving line portion.

FIG. 6 is a side view illustrating a sieving line portion.

FIG. 7 is a side view of the reaping unit.

FIG. 8 is an explanatory plan view of a cutting and conveying system.

FIG. 9 is an explanatory plan view of the upper part of the grain culm conveying section.

FIG. 10 is a side view of the tip carrier.

FIG. 11 is an explanatory diagram of a drive system of the tip carrier.

[Explanation of symbols]

 (22) Handling room (25) Swing sorting board (26) (27) Feed pan (28) Sieve line (29) Chaf sheave (31) Dust fan (pre-fan) (35) 2nd reduction conveyor (2nd reduction) apparatus)

Claims (3)

[Claims] 1. A combine threshing device equipped with a rocking sorter below the handling chamber, wherein front and rear feed pans are arranged in two steps in the front of the rocking sorter and at the rear end of the front feed pan. A combine threshing device characterized in that a sieving line is provided and a pre-fan for applying a sorting wind to the sieving line is provided below the front feed pan. 2. The combine threshing device according to claim 1, further comprising a second reducing device for reducing the second reduced product above the sieving line. 3. The combiner according to claim 1, further comprising a chaff sheave continuously provided at a rear end of the rear feed pan, and a blower device provided between the lower sheave and a lower sheave of the chaff sheave, which acts on the chaff sheave below the pre-fan. Threshing equipment.