TW201309186A - Threshing device - Google Patents

Abstract

The invention provides a threshing device which improves threshing screening accuracy and screening efficiency. The threshing device is characterized in that a threshing cylinder is arranged in a shaft bracket between a first lateral plate on the front side and a second lateral plate on the back side of a threshing chamber to enable the front portion of a dust removing processing chamber provided with a dust removing processing cylinder of the shaft bracket to be communicated with one side of the back portion of the threshing chamber. A swinging screening frame is arranged on the lower side of the threshing chamber, and a fan blowing screening air is arranged on the lower side of the swinging screening frame. The back end portion of the threshing cylinder protrudes rearwards much more compared with the back end portion of a threshing net on the periphery of the lower portion of the threshing cylinder, a communication portion communicated with the dust removing processing chamber is formed between the back portion of the threshing net in the threshing chamber and a second lateral plate, a filtering part used for filtering processing objects is arranged at the bottom of the communication portion, and a first partition plate used for applying resistance on backward transportation of the processing objects on the filtering part is arranged in the middle in the front-back direction in the filtering part.

Description

Threshing device

The invention relates to a threshing device.

In the prior art, there is known a threshing apparatus (Patent Document 1) in which a threshing net is provided on the lower side of the threshing drum to form a threshing chamber, and a dust discharging treatment device is provided on the rear side of the threshing chamber, and the dust discharging treatment device is provided. A dust-removing treatment drum having a dust-collecting communication port communicating with the threshing chamber, and a dust-discharging communication portion having a dust-discharging communication port in a front side portion of a portion of the threshing chamber where the end portion of the threshing net is not present, in the threshing chamber The rear side portion in the terminal side portion where the threshing net is not present is formed with a third recovery portion.

Patent Document 1: Japanese Laid-Open Patent Publication No. 2008-237194

In the above-mentioned known examples, there is a problem in that although a third collecting portion for puncturing the stalks into the grain stalk and collecting it is provided, a large amount of straw chips generated directly fall on the sieve. The load of screening increases.

Although the present application has a structure in which the third recovery unit is provided, the load of the screening is reduced, and the screening accuracy and the screening efficiency are improved.

The invention described in claim 1 is a threshing apparatus in which a threshing drum (11) is provided on a bobbin between a first side plate (16) on the front side of the threshing chamber (12) and a second side plate (17) on the rear side, so that the shaft is erected A front portion of the dust exhausting treatment chamber (30) having a dust removing treatment drum (31) communicates with a rear side of the threshing chamber (12), and a swing screening frame (22) is disposed on a lower side of the threshing chamber (12). On the lower side of the swing screening frame (22), a fan (19) is disposed in order from the front side, the fan (19) is used for blowing the screening wind; the first recycling part (27), the first recycling a portion (27) for recovering the primary material; and a second recovery portion (28) for recovering the secondary material, the threshing device characterized by: the threshing drum (11) The rear end portion protrudes rearward than the rear end portion of the threshing net (18) on the outer periphery of the lower portion of the threshing drum (11), and the rear end portion of the threshing net (18) in the threshing chamber (12) a portion between the second side plates (17) is formed with a communication portion (H) and a third recovery portion (S), and the communication portion (H) is in communication with the dust removal processing chamber (30). Three recycling department (S) The rear side of the communication portion (H) is open on the swing screening frame (22), and has a support member (48) at the bottom of the third recovery portion (S) for supporting the threshed The portion on the tip end side of the discharge stalk has a filter member (100) at the bottom of the communication portion (H), and the filter member (100) is for filtering the processed material in the front-rear direction of the filter member (100). The intermediate portion is provided with a first partition (51) for applying resistance to the rearward conveyance of the treatment on the filter member (100).

According to the invention, in the threshing apparatus according to the first aspect of the invention, the rear filter portion (46) is formed in a portion of the filter member (100) on the rear side of the first separator (51). A front side filter portion (45) is formed at a portion on the front side of the first partition plate (51) in the filter member (100), and a filter mesh hole of the front side filter portion (45) and the rear side filter portion (46) are filtered. The mesh holes are the same or smaller than the filter mesh holes of the rear side filter portion (46).

According to a third aspect of the invention, in the threshing apparatus of the second aspect, the second separator (55) is provided at a rear end portion of the filter member (100), and the second separator (55) is used for Applying resistance to the conveyance of the treatment material from the filter member (100) to the third recovery portion (S), and setting the height of the second partition plate (55) to be higher than the height of the first partition plate (51) .

According to a third aspect of the invention, in the threshing apparatus of the third aspect, a third partition (50) is provided between the threshing net (18) and the filter member (100), and the third partition (50) for applying resistance to the rearward conveyance of the processed material on the threshing net (18), and setting the third partition (50) to be higher than the first partition (51) and smaller than the second partition The board (55) is low.

In the threshing apparatus according to any one of claims 1 to 4, the front side of the swing screening frame (22) has a transport rack (24), and the transport rack (24) ) for transporting the treated material leaked from the threshing net (18) to the rear, and having a sieve (25) at a portion on the rear side of the transport rack (24) in the swing screening frame (22), the sieve (25) For screening the treatment, and the threshing apparatus is formed with a screening air path (71) for filtering the wind from the conveyor (24) from the fan (19) The rear end portion is blown upward between the front end portion of the sieve (25).

In the threshing apparatus according to any one of the first to fourth aspects, the dust removing device (31) has a spiral body (102) on the outer peripheral portion of the dust removing processing drum (31), and the spiral body (102) A plate body (103) is disposed between the spiral intervals (spiral pitch), and the plate body (103) is parallel to the rotation axis of the dust removing treatment drum (31).

According to a seventh aspect of the invention, in the threshing apparatus of the sixth aspect, the front side spiral body (102b) is provided in the front portion of the spiral body (102), and the third partition plate (55) and the first partition plate (51) are provided. The interval (L1) in the front-rear direction is set to be 1/2 or less of the pitch (P) of the front side spiral body (102b).

Effect of the invention

According to the invention of claim 1, the filter member (100) is provided at the bottom of the communication portion (H) that communicates with the threshing chamber (12) and the dust exhaust treatment chamber (30), and the front-rear direction in the filter member (100) The middle portion is provided with a first partition plate (51) for applying a resistance to the rearward conveyance of the treatment object on the filter member (100), so that the dust can be smoothly discharged The processing chamber (30) transports the straw chips in the threshing chamber (12), thereby preventing large straw chips from falling onto the swing screening frame (22), thereby improving screening precision and screening efficiency.

Further, since the bottom of the third recovery portion (S) which is open on the rear side of the communication portion (H) and which is open on the swing screen frame (22) has a support member (48) for supporting the threshing After that, the portion on the tip side of the stalk is discharged, thereby preventing the portion on the tip end side of the grain stalk from escaping downward, and the grain punctured into the grain stalk can be efficiently recovered, and the off-machine loss of the grain can be reduced.

According to the invention of claim 2, in addition to the effects of the invention described in the first aspect, the rear side filter portion is formed in a portion on the rear side of the first partition plate (51) in the filter member (100) ( 46) a front side filter portion (45) is formed at a portion of the front side of the first partition plate (51) in the filter member (100), and a filter mesh hole and a rear side filter portion of the front side filter portion (45) are The filter mesh of 46) is the same or smaller than the filter mesh of the rear filter unit (46), so that the straw scraps in the threshing chamber (12) can be smoothly transported to the dust discharge treatment chamber (30), thereby preventing large The straw scraps fall to the swing screening frame (22), thereby improving the screening accuracy and screening efficiency.

In particular, if the filter mesh hole of the front side filter portion (45) is smaller than the rear side filter portion (46), the large portion of the communication portion (H) is located on the front side of the first partition plate (51). The object is transferred to the dust discharge treatment chamber (30) to prevent large straw chips from falling onto the swing screening frame (22), and at the portion of the communication portion (H) on the rear side of the first partition plate (51), The processed object falls on the swing screening frame (22), thereby suppressing clogging of the processed object in the communicating portion (H), and the overall screening accuracy and screening efficiency can be further improved.

According to the invention of claim 3, in addition to the effects of the invention described in the second aspect, the height of the second partition (55) at the rear end portion of the filter member (100) is set to be higher than the above The height of a partition plate (51) is high, and even if the amount of the object to be processed in the threshing chamber (12) is increased, the object to be treated can be sent to the dust-removing chamber (30) through the communicating portion (H), thereby suppressing the being The inflow of the processed material from the communicating portion (H) to the third collecting portion (S) makes it possible to efficiently collect the grain in the third collecting portion (S).

In the invention according to claim 4, in addition to the effects of the invention described in the third aspect, the third partition (50) between the threshing net (18) and the filter member (100) is set to be larger than Since the first partition plate (51) is high and lower than the second partition plate (55), it is possible to more efficiently transport the workpiece from the communication portion (H) to the dust discharge treatment chamber (30).

According to the invention of claim 5, in addition to the effects of the invention according to any one of the first to fourth aspects, the screening air passage (71) is formed by the screening air passage (71). The screening wind blown by the fan (19) is blown upward from the rear end portion of the transport rack (24) and the front end portion of the screen (25), thereby preventing the grain and the transport from the transport rack (24) to the sieve (25). The inclusions falling from above are mixed.

According to the invention of the sixth aspect of the invention, in addition to the effects of the invention of any one of the first aspect to the fourth aspect, the plate body (103) is provided between the spiral intervals of the spiral body (102). The plate body (103) is parallel to the rotation axis of the dust-removing treatment drum (31), thereby facilitating the degranulation and separation treatment of the workpiece in the dust-removing treatment chamber (30), and improving the recovery efficiency of the grain.

According to the invention of the seventh aspect, in addition to the effects of the invention of the sixth aspect, the distance (L1) between the third partition plate (55) and the first partition plate (51) in the front-rear direction is set to Since the pitch (P) of the front side spiral body (102b) in the front portion of the spiral body (102) is 1/2 or less, it is possible to prevent the conveyance portion (H) from being transported to the front side of the first partition plate (51) to the front side. The object to be treated in the dust discharge treatment chamber (30) is retracted to a portion of the communication portion (H) on the front side of the first partition plate (51).

An embodiment of the present invention will be described by means of a drawing of a combine harvester, the reference numeral 1 is a body frame of a combine harvester, the reference numeral 2 is a running device disposed below the body frame 1, and the reference numeral 3 is disposed on the body frame 1. The upper threshing apparatus, reference numeral 4 is a harvesting portion provided on the front side of the threshing device 3, reference numeral 5 is a grain tank provided on the side of the threshing device 3, and reference numeral 6 is a manipulating portion provided on the front side of the grain tank 5.

<Degranulation device>

The threshing apparatus 3 is provided with a threshing chamber 12 at an upper portion thereof, and the threshing chamber 12 is axially fitted with a threshing drum 11 having a threshing tooth 10. The supply conveyor chain 14 of the grain stalk supply and conveyance device 13 for supplying and transporting the grain stalk harvested by the harvesting part 4 is provided in the one side of the threshing chamber 12. In addition, in order to make it easy to understand, the front-back, left-right, and the like are conveniently shown below, but the structure is not limited thereto.

The barrel of the barrel 11 is fitted to the front plate (first side plate) 16 of the threshing device 3 and the rear plate (second side plate) 17 of the threshing chamber, and mainly the lower side of the barrel 11 is surrounded by the threshing net 18. A fan casing 20 of the fan 19 is disposed below the threshing net 18. A wind selection chamber 21 is formed below the threshing chamber 12, and the air separation chamber 21 is capable of air-selecting grains and impurities by the air blow of the fan 19, and a swing screening device 23 is provided in the air-selection chamber 21, and the swing screening device is provided. 23 is constituted by a swing screening frame 22 that reciprocates in the air blowing direction (front-rear direction) of the fan 19.

<Swing Screening Device>

The configuration of the swing screening device 23 may be arbitrary, and an example is shown in which the start end portion (front end portion) of the swing screening frame 22 is positioned above the fan casing 20 to form a transport rack portion (transport rack) 24. Although not shown, the projections or the concavities and convexities are provided on the upper surface of the transport rack portion 24, and the fallen objects from the threshing net 18 are transported to the downstream side in the transport direction of the swing screening frame 22.

A sieve 25 is provided on the downstream side in the transport direction of the transport rack portion 24. The sieve 25 is composed of a grain sieve 25A on the front side and a gummy sieve 25B on the rear side.

The sieve 25 screens the grain and the impurities, and a plurality of sieves 25 are arranged side by side in the swing direction at predetermined intervals. The sieve 25 is formed in a thin flat plate shape, and is configured to be capable of freely adjusting the inclination angle within a high angle range on the downstream side (rear side) in the conveying direction.

A draft rack 26 is provided on the downstream side (rear side) of the conveying direction of the husk sieve 25B. A No. 1 conveyor (first recovery unit) 27 is disposed below the swing screening frame 22, and a No. 2 conveyor (Second recovery unit) is disposed on the rear side of the No. 1 conveyor 27. Reference numeral 29 is a screening net disposed below the sieve 25.

<Dust removal treatment device>

A dust discharge treatment device (dust exhaust treatment chamber) 30 is provided on the side of the rear portion (terminal side) of the threshing drum 11 on the side opposite to the installation side of the grain stalk supply and conveyance device 13. The dust-removing treatment device 30 is equipped with a dust-discharging treatment drum 31 substantially parallel to the axial center of the threshing drum 11, and the dust-discharging treatment device 30 is provided by a dust-discharge communication port 33 (FIG. 2) provided at the rear of the threshing chamber 12. The threshing chamber 12 is in communication.

The dust-removing material generated in the threshing chamber 12 is taken into the dust-removing treatment device 30 through the dust-discharging communication port 33, and is sent to the rear side by the rotation of the dust-removing treatment drum 31 while the processing net (concave plate) The grain and straw chips are separated between 101.

The start end shaft of the dust exhausting treatment drum 31 is fitted to the intermediate plate 34, and between the intermediate plate 34 and the threshing chamber rear plate 17, there is provided a discharge port 35 which will contain straw chips which do not fall from the threshing net 18. The treated object is discharged.

The dust-removing treatment drum 31 has a continuous conveying spiral (helical body) 102 wound around the outer circumference of the dust-removing processing drum 31, and a dust-removing processing tooth 102a protrudingly provided on the outer circumference of the spiral body.

The conveying screw 102 of the front portion (the portion facing the dust-collecting communication port 33) of the dust-removing processing drum 31 is the front side conveying screw 102b having the pitch P, and the conveying screw 102 from the intermediate portion to the rear portion has a pitch smaller than the pitch P. The rear side transports the spiral body 102c.

The transporting bobbin 102c on the rear side of the transporting spiral 102 is provided with a processing plate body (plate body) 103 which is located between the adjacent spiral body and the spiral body in a side view, that is, between the spiral spaces. , thereby actively driving the treatment to rotate in the circumferential direction.

In other words, a plurality of processing plate bodies 103 are provided at a rear position other than the portion corresponding to the dust-discharge communication port 33 that communicates with the processing chamber 12, and each plate body is circumferentially viewed from the axial direction of the dust-removing processing drum 31. The directions are configured at equal angular intervals.

The height of the process plate body 103 is set to be lower than the outer peripheral edge of the rear side transport screw 102c of the transport screw 102. However, it is appropriate to set the height of the process plate body 103 to a height of about half of the rear side transport screw 102c. Further, the processing plate body 103 may be configured to be orthogonal to the rotation axis of the dust removing processing drum 31 (radiation direction) or to maintain the advancing or receding angle.

Further, as shown in FIG. 21 and FIG. 22, the processing plate body 103 can also be disposed in parallel with the rotational axis direction (front-rear direction) of the dust-removing processing drum 31, but if the processing plate body 103 is disposed to be dust-discharging When the conveyance direction is appropriately inclined in the direction in which the conveyance resistance is applied, the treatment effect can be further improved.

A discharge vane 104 that discharges the dust to the outside of the machine is provided on the terminal side of the dust exhausting drum 31.

<Secondary processing device>

On the front side of the dust exhausting treatment device 30, a secondary processing device 36 that treats the secondary material recovered by the second conveyor 28 is disposed.

The secondary treatment drum 37 of the secondary treatment device 36 is disposed concentrically with the dust removal treatment drum 31. The secondary processing drum 37 is configured to convey the workpiece to the upper end side of the swing screening frame 22 opposite to the conveying direction of the grain stalk supply conveying device 13, and the secondary processing drum 37 is located on the side of the threshing net 18 . Further, reference numeral 38 denotes a suction dust removing fan, reference numeral 38A denotes a dust suction port, and reference numeral 39 denotes a casing for sucking the dust exhaust fan 38.

<Dust removal connection of the threshing chamber>

In the front side portion of the threshing chamber 12 where the threshing net 18 is not present, a dust-discharging communication portion (communication portion) H is formed, and the dust-discharge communication portion 33 is formed in the dust-discharging communication portion H.

A piercing grain collecting portion (third collecting portion) S is formed in the rear side portion of the threshing chamber 12 in the terminal side portion where the threshing net 18 is not present. The rear portion of the barrel 11 is extended to face the dust-discharging communication portion H and the puncturing and collecting portion S.

The interval between the threshing teeth 10 in the dust-discharging communication portion H of the above-described barrel 11 in the axial direction of the barrel 11 is set to be larger than the center of the threshing drum 11 of the processing unit 10 above the threshing net 18 of the barrel 11 The spacing of the directions is narrow (closed).

Therefore, the transfer of the workpiece to the dust exhaust communication port 33 can be smoothly and efficiently performed.

<The front and rear screens of the swing screening device>

Further, the front side screen portion 40 and the rear side screen portion 41 of the front and rear rows are arranged side by side on the swing screen frame 20.

The front side screen portion 40 and the rear side screen portion 41 are formed by arranging a plurality of screen lines 42 in parallel at predetermined intervals in the left-right direction, and the screen lines 42 protrude rearward.

The start end portion of the rear side screen portion 41 is positioned below the end portion of the front side screen portion 40 such that the front side screen portion 40 and the rear side screen portion 41 overlap each other.

Therefore, it is possible to prevent the falling of the straw chips on the sieve 25 and improve the screening performance.

The front end of the front side screen portion 40 is positioned below the terminal end of the threshing chamber 12.

Therefore, the front side screen portion 40 catches the straw chips dropped from the discharge port 35 of the processing chamber 12 and transports it to the rear side, thereby preventing the straw chips from falling onto the sieve 25 and improving the screening performance.

Further, the front side screen portion 40 is located below the rear side portion of the discharge port 35.

Therefore, the front side screen portion 40 catches the straw chips dropped from the dust exhausting communication port 33 and transports it to the rear side, thereby preventing the straw chips from falling onto the sieve 25 and improving the screening performance.

Further, the front side screen portion 40 is provided above the primary shelf tip member 43, and the primary shelf tip member 43 is provided on the swing screen frame 22.

Therefore, the screening wind from the blower 19 guided to the primary shelf tip member 43 is strongly blown through the front side screen portion 40 to promote separation of the straw chips from the grain. Reference numeral 44A is a mounting portion, and reference numeral 44B is an elastic guiding member.

Further, the front end of the front side screen portion 40 is located at the same position as or earlier than the rear end of the screening net 29, and the screening net 29 is disposed below the screen 25 of the swing screening frame 22.

Therefore, the straw chips can be prevented from falling to the No. 1 conveyor 27, and the screening performance can be improved.

<Change of posture of sieve>

The sieve 25 is configured such that the inclination angle can be freely adjusted, and the inclination of the front side screen portion 40 and the rear side screen portion 41 is changed in conjunction with the inclination angle adjustment of the screen 25.

That is, when the sieve 25 is raised and the interval between the sieves 25 is widened, the inclination of the front side screen portion 40 and the rear side screen portion 41 becomes a steep inclination of the rearward warping.

Therefore, it is possible to perform screening in an optimum state corresponding to the work state.

<Outlet of the threshing chamber>

The filter member 100 is disposed at the discharge port 35. The filter member 100 is a front filter unit 45 and a rear filter unit 46. The mesh of the front filter unit 45 is larger than the net 18, and the mesh of the rear filter unit 46 on the rear side of the front filter unit 45 is larger than the front filter unit. 45 big.

Further, a falling portion 47 is formed on the rear side of the rear side filter portion 46, and a drop guide 48 (FIG. 2) is provided in the lower portion 47.

The front side filter unit 45 is provided at a position juxtaposed with the dust exhaust communication port 33, and the front side filter unit 45 is a drop resistance of the waste straw that does not fall from the threshing net 18 but reaches the discharge port 35.

Therefore, the front side filter unit 45 assists in causing the waste straw to not fall directly from the discharge port 35 but to the dust discharge communication port 33, thereby reducing the load of the swing screening device 23 and screening. to raise efficiency.

In other words, if the discharge port 35 is formed in an open configuration, the object to be treated such as waste straw that has not reached the discharge port 18 and has not fallen from the threshing net 18 falls directly below, and is difficult to transfer to the dust discharge treatment device 30, but is not subjected to threshing. The large processed object that has not fallen from the front side filter unit 45 in the object to be treated which has fallen in the net 18 is transferred from the dust discharge communication port 33 to the dust discharge treatment device 30, and the object to be treated is increased to the dust discharge treatment device. The transfer efficiency of 30 transfer improves the overall screening accuracy and screening efficiency.

The diameters of the front side filter portion 45, the rear side filter portion 46, and the drop portion 47 of the discharge port 35 are different from each other.

The front side filter portion 45 has a front side partition plate (third partition plate) 50 which is erected in the circumferential direction of the barrel 11 at the front end portion, and the front side filter portion 45 is provided with a front side leakage lower body 54, which has a drop hole The drop hole 53 is configured by arranging the first shafts 52 in the front-rear direction of the axial direction of the barrel 11 in parallel.

A first partition (intermediate partition) 51 is provided between the front side filter portion 45 and the rear side filter portion 46 in the circumferential direction.

Further, the rear side filter portion 46 is provided in parallel at the rear end portion with a second partition plate (rear side partition plate) 55 which is erected in the circumferential direction of the barrel 11 , and the rear side filter portion 46 is provided with a rear side leakage body 58 . The rear side leakage lower body 58 has a dropping hole 57 which is formed by juxtaposing the second shaft 56 in the front-rear direction of the axial direction of the barrel 11 in parallel.

In the rear side filter portion 46, the arrangement interval of the second shaft 56 of the rear side leakage lower body 58 is formed larger than that of the front side leakage lower body 54, and the rear side falling hole 57 is formed larger than the front side falling hole 53.

Further, the height of the first partition plate 51 is formed to be the lowest, and the height of the second partition plate 55 is formed higher than the height of the front side partition plate 50. Further, the heights of the front side partition plate 50, the first partition plate 51, and the second partition plate 55 mean that the respective partition plates leak from the rear side of the threshing net 18 and the front side filter portion 45 to the rear side of the lower side filter portion 46 and the rear side filter portion 46. The amount by which the inner surface of the lower body 58 protrudes in the direction of the rotational axis of the barrel 11 is.

That is, the front side leakage body 54 of the front side filter portion 45 and the rear side leakage body 58 of the rear side filter portion 46 pass through the front side partition plate 50 and the first partition plate 51 and the second partition plate 55, and the first shaft 52 and the second shaft The rod 56 is formed in a lattice shape, and a drop guide 48 is provided in the drop portion 47, and the drop guide 48 is inclined toward the dust discharge treatment device 30 side as it approaches the rear side.

Therefore, the large object to be treated which is not dropped from the threshing net 18 is subjected to the resistance of the front side leakage body 54 of the front side filter portion 45 having a small mesh, thereby smoothly proceeding from the dust discharge communication port 33 to the row. Transfer (feed) of the dust processing device 30.

In the rear side filter unit 46, the object to be processed is dropped from the rear side drop hole 57 whose mesh is larger than the front side leaking body 54 of the front side filter unit 45 onto the swing screening frame 22, thereby preventing clogging at the discharge port 35 and improving the treatment. The transfer efficiency of the object to the dust removal treatment device 30 improves the overall screening accuracy and screening efficiency.

In addition, in the lower portion 47, since the drop guide 48 that is inclined toward the dust-discharging device 30 side toward the rear side is provided, the recovery of the punctured grain in the grain stalk is favorably performed, and the temporary stagnation is suppressed. The punctured granules dropped in the grain stalks are again pierced into the grain stalks, and are dropped onto the oscillating screening frame 22 for recovery.

In addition, in the present embodiment, the distance L1 between the front partition plate 50 and the first partition plate 51 in the front-rear direction is set to be the inner side in order to prevent the object to be transported to the dust discharge processing device 30 from being reversed toward the dust-discharging communication portion H. The pitch P of the spiral front side conveying spiral 102b of the dust-removing processing drum 31 of the dust-removing processing apparatus 30 is 1/2 or less, and is preferably set to 1/2 of the pitch P.

In order to efficiently convey the workpiece to the dust discharge processing device 30, the distance L2 between the front partition plate 50 and the second partition 55 in the front-rear direction is set to be equal to or less than the pitch P of the front side transport screw 102b of the dust-discharging drum 31. Preferably, it is set to be equal to the pitch P.

Further, the front side partition plate 50, the first partition plate 51, and the second partition plate 55 are each provided to surround the lower outer circumference of the barrel 11 and are provided in the front side partition 50, the first partition 51, and the second The mounting member of the left end of the partition 55 is supported by a mounting member attached to the lower wall of the processing chamber 12 by a fastening member such as a bolt.

Further, between the dust discharge communication portion H and the piercing grain collecting portion S, a second second partition plate 55 is provided, and the second partition plate 55 is formed to be smaller than the front side leakage lower body 54 and the rear side provided on the front side filter portion 45. The intermediate partition 51 between the rear side leakage bodies 58 of the filter portion 46 is high.

Even if the amount of the workpiece is increased, the second separator 55 which is formed higher than the first separator (intermediate partition) 51 promotes the transfer of the workpiece to the dust discharge treatment device 30, and suppresses the treatment to the thorn. The inflow of the grain collection unit S reduces the occurrence of four losses.

Further, the front end of the front side screen portion 40 is located below the rear side filter portion 46 in which the mesh opening in the discharge port 35 is increased.

Although there is a tendency that the amount of falling of the straw chips in the rear side filter portion 46 where the mesh of the discharge port 35 falls and the straw chips fall and the mesh in the discharge port 35 becomes large, the front end of the front side screen portion 40 is increased. It is located below the rear side filter portion 46, so that the falling of the straw chips to the sieve 25 is suppressed.

Further, the front side filter portion 45 and the rear side filter portion 46 form the drop hole 53 and the drop hole 57 by the first shaft 52 and the second shaft 56, and the first shaft 52 and the first in the rotation direction of the barrel 11 Since the arrangement intervals of the two shafts 56 are different, the resistance of the workpiece in the rotation direction of the barrel 11 can be made different, and the transfer efficiency of the workpiece to the dust discharge processing device 30 can be improved, and the swing screening frame 22 can be reduced. load.

In addition, since the falling guide 48 of the falling portion 47 is inclined toward the dust removing device 30 side as it approaches the rear side, the object to be processed falling from the falling portion 47 is guided to the side of the dust removing device 30, so that the swinging screen is placed. The processed objects on 22 are averaged.

<Other ways of the discharge port of the threshing chamber>

8 to 10 show another embodiment of the discharge port 35. The front side filter portion 45 and the rear side filter portion 46 form the drop holes 53, 57 by the plate 60 and the partition plates 50, 51, 55, and the plate 60 is inclined in the tangential direction. angle.

Therefore, the flat portion of the plate 60 forms a resistance, and the resistance to the workpiece can be increased, the transfer efficiency of the workpiece to the dust discharge processing device 30 can be improved, and the load on the swing screen frame 22 can be reduced.

Further, since the front side filter portion 45 and the rear side filter portion 46 form the drop holes 53 and 57 by the plate 60 and the partition plates 50, 51, and 55, it is possible to suppress the entanglement of the waste straw, prevent clogging, and easily perform maintenance. .

Fig. 11 shows still another embodiment of the discharge port 35. The front side filter portion 45 and the rear side filter portion 46 form the drop holes 53, 57 by the plate 60 and the partition plates 50, 51, 55, which are configured to be the threshing drum 11 The axis direction is inclined toward the dust discharge processing device 30 side as it approaches the rear side.

Therefore, the objects to be processed falling from the front side filter unit 45 and the rear side filter unit 46 are guided to the side of the dust exhausting treatment device 30, and the objects to be processed on the swing screen frame 22 are averaged.

12 and 13 show still another embodiment of the discharge port 35. The front side filter portion 45 and the rear side filter portion 46 use the partition plates 50, 51, 55 which intersect the axial direction of the barrel 11, and the shaft with the barrel 11 The shaft 61 in which the core directions are parallel is formed in a lattice shape to form the front side leakage lower body 54 and the rear side leakage lower body 58.

Therefore, the front side filter unit 45 and the rear side filter unit 46 of the discharge port 35 can reduce the resistance of the workpiece in the rotation direction of the barrel 11 and suppress the feeding action of the workpiece to the dust discharge treatment device 30. The load of the dust exhaust treatment device 30 can be reduced.

14 and 15 show still another embodiment of the discharge port 35. The front side filter portion 45 is provided with a wrinkle screen 65, and the above-mentioned drop hole 53 is formed by the mesh of the wrinkle screen 65, and is filtered at the rear side. The portion 46 is provided with a shaft 61 parallel to the axial direction of the barrel 11, and a drop guide 48 is provided at the lower portion 47.

Therefore, the front side filter portion 45 of the discharge port 35 increases the resistance of the workpiece in the rotation direction of the barrel 11 to preferentially feed the workpiece to the dust discharge treatment device 30, and filter the filter at the rear side. The portion 46 gives priority to the leakage of the object to be processed.

16 and 17 show still another embodiment of the discharge port 35. The front side filter portion 45 forms the front side leakage lower body 54 by the front side wrinkle screen 65, and the rear side filter portion 46 forms the rear side leakage line by the rear side wrinkle screen 66. The lower body 58 is formed, and the drop hole 57 of the rear side wrinkle screen 66 is formed larger than the drop hole 53 of the front side wrinkle screen 65.

Therefore, in the front side filter portion 45 of the discharge port 35, the feeding operation for feeding the workpiece to the dust removing processing device 30 is prioritized by the front side wrinkle screen 65 having a small mesh size, and the rear side filter portion 46 is utilized. The rear side wrinkle screen 66 having a large mesh gives priority to the leakage of the object to be treated.

Fig. 18 shows still another embodiment of the discharge port 35. The front side filter portion 45 and the rear side filter portion 46 are provided with a wrinkle screen 65 having the same mesh hole, and the drop portion 47 is provided with a drop guide member 48, which is provided with a drop guide 48. It is inclined toward the dust discharge treatment device 30 side as it approaches the rear side.

Therefore, the recovery of the punctured granules in the conveyed grain stalk proceeds well, and the temporarily released grain falls on the oscillating sieve frame 22 and is recovered without being punctured again.

<Wind selection structure>

A plate which is steeper than the primary shelf tip member 43 and which is inclined rearwardly is provided at an upper and lower intermediate position of the primary shelf tip member 43 and the screening screen 29 of the swing screening frame 22 disposed below the above-described swing screening frame 22. 68 (Figure 2).

Therefore, the plate 68 causes the screening wind from the fan 19 above the primary shelf tip member 43 to be blown upward toward the screen 25, so that the screening wind from the fan 19 is strongly blown between the screens 25, promoting the straw chips and the valley. Separation of the granules.

In this configuration, the plate 68 is formed such that the rear extension line of the inclined surface of the plate 68 faces the suction opening 38A of the dust extraction fan 38 above the terminal end of the swing screening frame 22.

Therefore, with the plate 68 and the suction port 38A of the dust-extracting fan 38, the screening air from the fan 19 passing over the upper shelf tip member 43 is further blown upward toward the screen 25, so that the screening wind from the fan 19 is The sieve 25 is strongly blown through, which promotes the separation of straw chips from the grain.

<fan wind path>

Further, the fan casing 20 and the fan 19 are located below the transport frame portion 24 of the swing screen frame 22. A blower port 70 (FIG. 21) is provided in the fan case 20.

An upper screening air passage (screening air passage) 71 is formed upward from the end of the transport frame portion 24 of the swing screening frame 22 and the start end portion of the screen 25, and the screening wind from the fan 19 filters the air passage from the upper side (screening The air passage 71 is blown, and the front side filter portion 45 of the discharge port 35 is opposed to the air blowing direction of the upper side screening air passage 71.

Therefore, the front filter portion 45 of the discharge port 35 prevents the inclusions falling from the vicinity of the tip end of the dust exhaust treatment device 30 from falling on the sieve 25 on the start end side, and prevents the grain from being mixed with the inclusions.

The configuration in which the upper screening air passage 71 is formed is arbitrary, and an example is shown in which the upper air guiding body 72 is provided on the rear side of the air blowing port 70 of the fan casing 20. The upper air guiding body 72 is provided with a guiding surface 73 that guides the air blow from the air blowing port 70 toward the lower surface of the transport frame portion 24. The vertical plate portion 74 is substantially parallel to the upper air guiding body 72 and guides the air blow from the air blowing port 70 toward the lower surface of the transport frame portion 24, and the vertical plate portion 74 is located above the fan casing 20 above the upper air guiding body 72. An upward air passage 73A is formed between the guide surface 73 and the vertical plate portion 74, and the air from the upward air passage 73A is switched in the direction of the lower surface of the transport frame portion 24 of the swing screen frame 22, and the air passage is filtered through the upper side. 71, air is blown to the front side filter portion 45 of the discharge port 35.

In other words, the front and rear positions of the vertical plate portion 74 of the fan casing 20 are located on the front side of the rear end of the transport frame portion 24 of the swing screen frame 22, and the air blow from the air supply port 70 is guided by the upper air guide body 72 and the vertical plate portion. 74 is guided upward through the upward windward path 73A, and is blown to the front side portion of the sieve 25 through the upper side air passage (backward air passage), that is, the upper side screening air passage 71.

Therefore, the inclusions from the vicinity of the tip end of the dust exhaust treatment device 30 can be scattered backward, and the sieve 25 can be provided at a position on the front side of the front end of the discharge port 35, thereby increasing the screening area in the front-rear direction of the sieve 25. .

The length of the transport frame portion 24 of the swing screening frame 22 is substantially the same as that of the threshing net 18 described above.

Therefore, the conveyance frame portion 24 receives the leakage of the processing chamber 12 and averages it in the left-right direction, thereby improving the screening effect of the sieve 25.

Further, since the length of the transport frame portion 24 of the oscillating screening frame 22 is substantially the same as that of the threshing net 18, the screening air directional screen 25 raised by the upper air guiding body 72 and the vertical plate portion 74 can be blown accordingly, and can be expected to be good. The function of transferring the object to be processed from the transport rack unit 24 to the screen 25 is performed.

In this configuration, on the rear side of the opening portion 53A of the oscillating screening frame 22, a guide plate (upward guiding surface) 75 which is substantially perpendicular or which is inclined toward the front side is provided.

Thereby, the air blown upward by the upper air guiding body 72 and the vertical plate portion 74 of the fan casing 20 is guided toward the front side of the transport frame portion 24 of the swing screening frame 22, and as a result, the blow air is further directed upward and guided. The air passage 71 is screened to the upper side, and the air blow of the fan 19 is efficiently guided to the upper screening air passage 71.

A shed side guide surface 76 is provided on the lower surface of the transport frame portion 24 of the oscillating screening frame 22 described above.

Thereby, the air-side guide surface 76 of the lower surface of the air transporting carriage portion 24 guided upward by the upper air guiding body 72 and the vertical plate portion 74 of the fan casing 20 is parallel to the lower surface of the transport frame portion 24. As a result, the conveyance action of transporting the object to be processed falling from the conveyance frame portion 24 to the rear is improved.

11. . . Threshing drum

12. . . Threshing chamber

16. . . Front panel (first side panel)

17. . . Threshing chamber rear plate (second side plate)

18. . . Threshing net

19. . . Fan

twenty two. . . Swing screening

twenty four. . . Shipping rack (transport rack)

25. . . sieve

27. . . No. 1 conveyor (first recycling department)

28. . . No. 2 conveyor (second recycling department)

30. . . Dust removal treatment device (dust disposal room)

31. . . Dust removal roller

45. . . Front side filter

46. . . Rear filter

48. . . Drop guide (support member)

50. . . Partition (third partition)

51. . . Partition (first partition)

55. . . Partition (second partition)

71. . . Upper side screening wind path (screening wind path)

100. . . Filter unit

102. . . Spiral

102b. . . Anterior spirochete

103. . . Plate body

H. . . Connecting part

L1. . . interval

P. . . Pitch

S. . . Puncture into the pellet recovery section (third recovery section)

Figure 1 is a side view of a combine harvester.

Fig. 2 is a longitudinal sectional side view of the threshing apparatus.

Figure 3 is a longitudinal sectional side view of the vicinity of the fan.

Figure 4 is a side view of the discharge port of the threshing chamber.

Fig. 5 is a plan view of the discharge port of the threshing chamber.

Fig. 6 is a front elevational view of the discharge port of the threshing chamber.

Fig. 7 is a rear elevational view of the discharge port of the above-described threshing chamber.

Figure 8 is a side view of still another embodiment of the discharge port of the processing chamber.

Fig. 9 is a plan view showing still another embodiment of the discharge port of the processing chamber.

Fig. 10 is a front elevational view showing still another embodiment of the discharge port of the processing chamber.

Figure 11 is a plan view of still another embodiment of the discharge port of the threshing chamber.

Fig. 12 is a plan view showing still another embodiment of the discharge port of the processing chamber.

Figure 13 is a side elevational view of still another embodiment of the discharge port of the threshing chamber.

Figure 14 is a plan view of still another embodiment of the discharge port of the threshing chamber.

Figure 15 is a side elevational view of still another embodiment of the discharge port of the threshing chamber.

Figure 16 is a plan view of still another embodiment of the discharge port of the threshing chamber.

Figure 17 is a side elevational view of still another embodiment of the discharge port of the threshing chamber.

Figure 18 is a plan view of still another embodiment of the discharge port of the processing chamber.

Figure 19 is a longitudinal sectional side view of the vicinity of the fan.

Figure 20 is a side view of the dust removing treatment drum.

Figure 21 is a rear elevational view of the main part of the dust-removing treatment drum.

Figure 22 is a rear elevational view of the main part of the threshing apparatus.

Figure 23 is a plan view of the threshing apparatus.

Figure 24 is a longitudinal sectional view of the threshing apparatus.

Figure 25 is a cross-sectional view taken along line A-A of Figure 23 .

10. . . Threshing tooth

11. . . Threshing drum

17. . . Threshing chamber rear plate (second side plate)

19. . . Fan

20. . . Fan housing

twenty two. . . Swing screening

twenty three. . . Swing screening device

twenty four. . . Shipping rack (transport rack)

25. . . sieve

25A. . . Grain sieve

25B. . . Shell sieve

27. . . No. 1 conveyor (first recycling department)

29. . . Screening network

30. . . Dust removal treatment device (dust disposal room)

33. . . Dust connection

34. . . Medium plate

35. . . Discharge

36. . . Secondary treatment unit

37. . . Secondary treatment roller

38A. . . Vacuum port

43. . . One shelf tip

44A. . . Installation department

44B. . . Elastic guide

47. . . Lower part

48. . . Drop guide (support member)

53A. . . Opening

70. . . Outlet

71. . . Upper side screening wind path (screening wind path)

72. . . Upper air deflector

73. . . Guide surface

73A. . . Windward road

74. . . Vertical plate

75. . . Guide plate (upward guide surface)

76. . . Shed side guide surface

100. . . Filter unit

H. . . Connecting part

S. . . Puncture into the pellet recovery section (third recovery section)

Claims (7)

A threshing device is provided with a threshing drum (11) between the first side plate (16) on the front side of the threshing chamber (12) and the second side plate (17) on the rear side, and the scaffold is provided with a dust removing treatment drum (31) The front portion of the dust exhausting treatment chamber (30) communicates with the rear side of the threshing chamber (12), and a swing screening frame (22) is disposed on the lower side of the threshing chamber (12), and the swing screening frame ( The lower side of 22) is provided, in order from the front side, a fan (19) for blowing the screening wind, a first recovery unit (27), and the first recovery unit (27) for recycling And a second recovery portion (28) for recovering the secondary material, the threshing device characterized in that the rear end portion of the threshing drum (11) is in the threshing The rear end portion of the threshing net (18) on the outer periphery of the lower portion of the drum (11) also protrudes rearward, and the rear end portion of the threshing net (18) and the second side plate (17) in the threshing chamber (12) A communication portion (H) and a third recovery portion (30) are respectively formed between the portions, and the communication portion (H) is in communication with the dust removal processing chamber (30), and the third recovery portion (S) is located The rear side of the communication portion (H) The swing screening frame (22) has an opening, and a support member (48) is provided at a bottom of the third recovery portion (S), and the support member (48) is for supporting a tip end side portion of the discharged stalk after the threshing, The bottom of the communication portion (H) has a filter member (100) for filtering the treatment object, and a first partition plate is provided at a portion in the middle of the front-rear direction in the filter member (100). The first partition plate (51) is used to apply resistance to the rearward conveyance of the treatment object on the filter member (100). The threshing apparatus according to the first aspect of the invention, wherein a rear side filter portion (46) is formed in a portion on a rear side of the first partition plate (51) of the filter member (100), in the filter member ( A front side filter portion (45) is formed at a portion on the front side of the first partition plate (51), and a filter mesh hole of the front side filter portion (45) is the same as a filter mesh hole of the rear side filter portion (46). Or smaller than the filter mesh of the rear side filter portion (46). The threshing apparatus according to claim 2, wherein a second partition (55) is provided at a rear end portion of the filter member (100), and the second partition (55) is used for a treatment object Resistance is applied from the filter member (100) to the third recovery portion (S), and the height of the second separator (55) is set to be higher than the height of the first separator (51). The threshing apparatus according to claim 3, wherein a third partition (50) is disposed between the threshing net (18) and the filter member (100), and the third partition (50) Applying resistance to the rearward conveyance of the processed material on the threshing net (18), setting the third partition (50) higher than the first partition (51) and being higher than the second partition (55) low. The threshing apparatus according to any one of claims 1 to 4, wherein the front side of the swing screening frame (22) has a transport rack (24) for The treatment material leaked from the threshing net (18) is transported to the rear, and a sieve (25) is provided at a portion on the rear side of the transport rack (24) in the swing screening frame (22), and the sieve (25) is used for The treatment is screened, and the threshing apparatus is formed with a screening air passage (71) that causes the screening wind blown from the fan (19) to pass from the rear end portion of the transport rack (24) The front end of the sieve (25) is blown upward. The threshing apparatus according to any one of claims 1 to 4, wherein the outer peripheral portion of the dust-removing treatment drum (31) has a spiral body (102) disposed between the spiral intervals of the spiral body (102). There is a plate body (103) which is parallel to the rotation axis of the dust removing treatment drum (31). The threshing apparatus according to claim 6, wherein the front side of the spiral body (102) has a front side spiral body (102b) between the third partition plate (55) and the first partition plate (51). The interval (L1) in the front-rear direction is set to be 1/2 or less of the pitch (P) of the front side spiral body (102b).