CN1090447C - Threshing device for combine harvester - Google Patents

Abstract

The present invention relates to a threshing device of a combine harvester. The present invention can improve the sieving performance of a swinging sieving disk which is used for sieving threshing objects. In the threshing device of the combine harvester, the swinging sieving disk 25 is arranged below a threshing chamber 22, a front conveying disk 26 and a back conveying disk 27 are arranged at the front part of the swinging sieving disk 25 from top to bottom in a two-pass way, and a sieving line 28 is arranged at the back end of the front conveying disk 26. Simultaneously, a preceding stage fan 31 which is used for generating sieving wind to the sieving line 28 is arranged below the front conveying disk 26.

Description

The sheller unit of combine

The present invention relates to the cereal that to have handled in the threshing chamber threshing with thereunder the sheller unit that screening plate carries out the combine of Screening Treatment of shaking.

Shake in the screening plate existing, transmission plate is made of the structure that a plate forms, its rear end is provided with glume-shell screen mutually., under the situation of this structure, exist screening narrow width, straw bits etc. and form bulk with dust and be difficult to disperse,, have the problem of screening precise decreasing that makes particularly if carrying out above this tendency of high capacity process of 5 harvestings becomes significantly.

Therefore the present invention, fit beneath at threshing chamber has in the combine sheller unit that shakes screening plate, dispose to two-period form the front and back transmission plate up and down in the front portion of shaking screening plate, and at the backend arrangement of preceding transmission plate screening line, simultaneously, below preceding transmission plate, dispose prime fan to this screening line effect screening wind, when the screening area that makes transmission plate effectively enlarges, make screening wind act on cereal and the dust that disperses by the screening effect of screening line well, screenability is improved from fan.

In addition, be provided with, promoted the decentralized of the cereal of secondary loopback thing and dust, improved the disposal ability and the screenability of this screening plate the secondary loop back device of secondary loopback thing to screening line top loopback.

And, the rear of prime fan be provided with to be connected with between the glume-shell screen of transmission plate rear end, back and the grain sieve below it and the grain sieve below effect screen the air-supply arrangement of wind, the dropping that the screening wind that comes from main air-supply arrangement is acted on leak down from glume-shell screen and grain sieve has improved the screening precision more.

Fig. 1 shakes the side illustration figure of screening portion.

Fig. 2, the whole side view of combine.

Fig. 3, the overall plan view of combine.

Fig. 4, the sectional view of threshing part.

Fig. 5, the plane key diagram of screening line part.

Fig. 6, the side illustration figure of screening line part.

Fig. 7, the side illustration figure of reaping part.

Fig. 8, the plane key diagram of harvesting handling system.

Fig. 9, the plane key diagram of cereal bar top trucking department.

Figure 10, the side illustration figure of awn of wheat transporter.

Figure 11, the key diagram of awn of wheat transporter drive system.

Below, based on accompanying drawing in detail embodiments of the invention are described in detail.Fig. 1 is the side illustration figure that shakes screening portion, and Fig. 2 is the whole side view of combine, and Fig. 3 is the overall plan view of combine.1 for being equipped with the rail bracket of traveling crawler 2 among the figure; 3 for being set up in the board on the aforementioned rail bracket 1; 4 threshers of hanging up conveyer chain and built-in threshing cylinder 6 and handling cylinder 7 for the left side are threshing portion; 8 reaping parts for equipment cutter 9 and straw transport mechanism 10 etc.; 11 for making the oil hydraulic cylinder of reaping part 8 liftings by harvest frame 12; 13 for closing on the Lysimachia sikokiana handling part of Lysimachia sikokiana chain 14 terminals; 15 for by raising the cereal box that grain tube 16 will be packed into from the grain of threshing portion 4; 17 for being transported to the cereal in the aforementioned case 15 the outer discharge auger of machine; 18 for equipping the driving cabin of driver behavior portion 19 and driver's seat 20; 21 for being arranged at the engine of driving cabin 18 belows, gathers in straw and threshing continuously and constitute.

In addition, as shown in Figure 4, among the figure 22 establishes in being along the threshing chamber of the axial flow type threshing cylinder 6 of the fore-and-aft direction pedestal of body, 23 is the threshing mouth that inserts straw to aforementioned threshing chamber 22,24 are the cotton knitmesh of the cockle of hanging up below aforementioned threshing chamber 22,25 shake screening plate for close on the front end support below the cotton knitmesh 24 of aforementioned bending along what fore-and-aft direction freely shook, 26,27 is the front and back transfer dish of the screening plate 25 of 2 segmentations configuration up and down below the cotton knitmesh 24 of aforementioned cockle, but the 28 screening lines that shake for easy on and off in the rear end side setting of preceding transfer dish 26,29 is the glume-shell screen that links to each other and be provided with the rear of transfer dish 27 rear ends, back, 30 is the grain sieve of configuration below glume-shell screen 29, the 31st, conduct is transfer dish 26 forwards, backwards, 27 up and down between supply with screening wind send the dirt fan as the prime fan, the 32nd, as between glume-shell screen 29 and grain sieve 30 and the below of grain sieve 30 supply with the windmill of the main air-supply arrangement of screening wind, the 33rd, and raise grain tube 16 and be connected and from cereal sieve 15, take out the 1st conveyer of grain, the 34th, by as the secondary loopback conveyer belt 35 of secondary loop back device for the second time with the 2nd conveyer of cereal loopback above the screening line 28 of aforementioned screening plate 25, the 36th, the suction dirt fan of top, the rear end of screening plate 25 before being disposed at, grain by aforementioned threshing cylinder 6 and 7 threshings of processing cylinder is shaking screening plate 25 screenings, being fetched in the aforementioned cereal box 15 only with whole grain, meanwhile, to discharge the rice bar by row rice bar chain 14 and deliver to discharge rice bar handling part 13, cut off outside the back discharge machines by discharging rice bar cutter 37.

As Fig. 5 and shown in Figure 6, aforementioned screening line 28 is that the cross section is formed door shape for circular line body 28a warpage, on the screening line receiver 39 on the axis of rocking 38 that is fixed in screening plate 25, each line body 28a is become pectination in the full width of selective pan 25 with about equally fixed interval, axis of rocking 38 connected free to rotately be held between left and right sides sidewall 25a, the 25a of screening plate 25, hold under the arm on the screening line receiver 39 that is tightly fixed on this axis of rocking 38 by giving as security the cardinal extremity that plate 40 and bolt 41 will screen line 28.

In addition, the aforementioned screening plate 25 that shakes is, with the roller 42 of rear side by when shaking driving shaft 44 and crank axle 45 twelve Earthly Branches free to rotate and be held on the threshing side plate 43,47 chimeric on the roller of screening plate 25 front sides is held on the medial surface of left and right sides threshing side plate 43 highland, low back of going forward to tilt on the guide rail 46 of コ shape in fixing cross section, when aforementioned driving shaft 44 rotates, making the rear side work of screening plate 25 is the circular motion at center with this, the rectilinear motion along guide rail 46 is made in the front side, makes screening plate 25 with before and after the elliptical path that the little front and back of amplitude amplitude is big up and down and shake up and down and constitute.

And, because the cross section that makes high back low dip before the shaking roller 50 and be embedded in of aforementioned screening line 28 be fixed in the medial surface of left threshing side plate 43 is on the guide rail 49 of コ shape, so that the roller shaft 53 that shakes roller 50 connects a front end that is held in the swing arm 51 of the left end that is fixed on aforementioned axis of rocking 38 by slotted hole 52, when screening plate 25 shakes, make shake roller 50 along guide rail 49 moving linearlies, to make swing arm 51 be that the center is shaken with axle 38, the axle 38 that makes it to carry out with aforementioned screening line 28 is fluctuating of center.

In addition, because aforementioned plenum fan 31, be arranged at the anterior position of windmill 32 at preceding transfer dish 26 lower positions, so cover with the fan guard 55 that send dirt fan 31 between the bottom of windmill cover 54 outsides of windmills 32 and preceding transfer dish 26, at front and back transfer dish 26, offer air outlet 56 between 27, simultaneously, configuration back transfer dish 27 above aforementioned windmill 32, the top of windmill 32 and rear portion offer between glume-shell screen 29 and the grain sieve 30 and grain sieve 30 below transmit the air outlet 57a of screening wind respectively, 57b, screening wind from plenum fan 31 is acted on from aforementioned screening line 28 and direct cereal and the dust that is fallen by cockle net 24, make screening wind act on cereal and the dust that falls by glume-shell screen 29 and grain sieve 30, in the hope of improving screenability from windmill 32.Further, can promote the decentralized of the grain at back transfer dish 27 and glume-shell screen 29 places and dust by the effect of screening up and down of screening line 28, simultaneously, make the top that stomodaeum 35a closes on screening line 28 of going back of secondary reduction conveyer belt 35, decentralized in the hope of the secondary reduction thing makes and carries out jumbo cereal effectively be treated as possibility in limited screening amplitude.

To shown in Figure 8, aforementioned reaping part 8 comprises as Fig. 7: have 6 of fork 59 of propping up that the uncut straw of collecting erected come by minute careless plate 58 and prop up beam 60; Hold the star runner 61 of the pole-footing side of this straw of propping up and awn of wheat side under the arm and hold under the arm and embrace a belt 62; Hold the cutting knife 9 that cuts off the pole-footing side when embracing under the arm at this; With the oblique right lower quadrant conveyer chain 63 that transports of rear in the pole-footing side direction left side of 2 straws in right side after cutting off; Upper right quarter with upper right quarter carrying fork 64a that the oblique rear, an awn of wheat side direction left side of 2 straws in right side is transported transports body 64; Make the pole-footing side and the awn of wheat side of the straw of 2 parts of central authorities transport near the central lower conveyer chain 65 that collaborates the transmission centre position of body 64 and have the central upper transporter 66 that 66a is pitched in the central upper carrying at right lower quadrant conveyer chain 63 and upper right quarter; Make the pole-footing side and the awn of wheat side of the straw of 2 parts in left side carry near the lower left quarter carrying chain 67 that collaborates the transmission terminal location of chain 63 and upper right quarter transporter 64 and have the upper left quarter transporter 68 that 68a is pitched in the upper left quarter carrying at right lower quadrant; The pole-footing of 6 the straw that will collaborate at the feeding terminal of aforementioned right lower quadrant carrying chain 63 continues to be transported to the vertical carry strap 69 of transmission initiating terminal of aforementioned conveyer belt 5; Awn of wheat side with 6 the straw that will collaborate at the transmission clearing end of aforementioned upper right quarter transporter 64 is transported to the upper back transporter 70 of the upper back carrying fork 70a of threshing Way in; Be located at the descend centre position haply, make straw continue the subsidy conveyance chain 71 that conveyer chain 5 is arrived in conveyance between the transmission terminal of aforementioned upper back transporter 70 and vertical carrying chain 69 with the posture that adapts to; Be located at the position, opposite of aforementioned each top transporter 64,66,68 top, have the part of some is hanged down in carrying by the wheat tip of paddy bar the right side, central authorities, the left awn of wheat carrying fork 72a, 73a, the right side of 74a, central authorities, left awn of wheat transporter 72,73,74 respectively.By each chain 63,65,67 and each transporter 64,66,68, make the pole-footing side and the awn of wheat side of 6 paddy bar of harvesting adopt as heir the interflow for transporter 69, supply with threshing portion 4 and carry out the threshing processing.

Extremely shown in Figure 11 as Fig. 9, aforementioned each awn of wheat is moved body 72,73,74 and each top transporter 64,66,68 transmission active side opposite is provided with, make carrying fork 64a, the 72a66a of each combination, the direction of transfer unanimity of 73a68a, 74a, prop up the propping up on the power shaft 76 of input pipe 75 on the harvest frame 12 being located at, the horizontal driving shaft 78 of the horizontal driving beam 77 by propping up beam 60 upper ends and the branched shaft 80 of branch beam 79 make each transporter 72,73,74 power shaft 81,82,83 links respectively and links up.

Aforementioned branches beam 79, be arranged at the back side upper end side of propping up beam 60 respectively, be carry out these beams 60 prop up fork 59 driving usefulness, make the upper end of respectively propping up beam 60 be linked to horizontal driving beam 77, be provided with the output shaft 85 that drives the fork chain 84 of propping up fork 59 in the lower end of this beam 60, make the upper end of the branched shaft 80 in the branch beam 79 be linked to horizontal driving shaft 78 by a pair of bevel gear 86, and make the lower end be linked to aforementioned output shaft 85, respectively prop up the driving of propping up fork 59 of beam 60 by a pair of bevel gear 87.

And, aforementioned awn of wheat transporter 72,73,74 is linked be held in from the left side the 2nd, the 3rd and from the right side lower end of the 2nd branch beam 79, make these transporters 72,73,74 power shaft 81,82,83 are linked to each output shaft 85 by universal joint 88 interlock, carry out each awn of wheat carrying fork 72a, 73a, the driving separately of 74a.

And from the plane, make awn of wheat transporter 72,73,74 are disposed at each top transporter 64,66,68 position, opposite, by make be in mutual opposite relation respectively pitch 64a, 72a66a, 73a68a, the direction of transfer unanimity of 74a makes to the active force that draws that hangs over the paddy bar rear of propping up on the beam 60 and strengthens, simultaneously, at awn of wheat carrying fork 72a, 73a, the 74a carrying is from the wheat point position attenuating threshing of some slightly down of paddy bar, and near propping up the lower position that drives beam 77, set each awn of wheat transporter 72,73,74, the active force that draws that hangs over the paddy bar that drives on the beam 77 is strengthened, on by each top and the bottom transporter 63～68 formed Y-shaped carrying path 89, make the smooth carrying of the paddy bar that does not hang up become possibility.

Expressed by above embodiment, the present invention reaches following obvious effects: be equipped with below threshing chamber 22 and shake in the combine sheller unit of screening plate 25, because transfer dish 26 before and after two-period form ground disposes up and down in the front portion of shaking screening plate 25,27, and when the rear end of preceding transfer dish 26 sets screening line 28, configuration is to the prime fan 31 of these screening line 28 effect screening wind below preceding transfer dish 26, so can enlarge effectively at transfer dish 26, the screening area at 27 places, simultaneously, thus can make screening wind from prime fan 31 act on the cereal and the dust that are disperseed by the screening effect of screening line 28 well improves screenability.

In addition, owing to be provided with secondary loop back device 35, promoted the decentralized of cereal in the secondary loopback thing and dust, so can improve disposal ability and screenability at screening plate 25 with the top loopback of the screening line 28 of secondary loopback thing.

Especially, since the rear of prime fan 31 be provided with to be connected with between the glume-shell screen 29 of transfer dish 27 rear ends, back and the grain sieve 30 below it and beans sieve 30 below produce the air-supply arrangement 32 of screening wind effect, so the dropping that the screening wind that comes autonomous air-supply arrangement 32 is acted on leak down from glume-shell screen 29 and grain sieve 30 improves the screening precision more.

Claims (1)

1. the sheller unit of a combine, shake screening plate (25) in the fit beneath of threshing chamber (22), dispose to two-period form front and back transmission plate (26,27) up and down in the front portion of shaking screening plate (25), and at the backend arrangement of preceding transmission plate (26) screening line (28), simultaneously, dispose the prime fan (31) that this screening line (28) is acted on screening wind in the below of preceding transmission plate (26), it is characterized in that:

Be provided with the secondary loop back device (35) that secondary loopback thing is transmitted back to screening line (28) top, be provided with at the rear of prime fan (31) to being connected with between the grain sieve (30) of the glume-shell screen (29) of transmission plate (27) rear end, back and its below and the below of grain sieve (30) produces the air-supply arrangement (32) that screens the wind effect.

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