JPH0119657Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a threshing device for a combine harvester, which is equipped with, for example, a reaping section and a threshing section, and is configured to continuously reap and thresh grain culms. Conventionally, as shown in Japanese Patent Application Laid-Open No. 54-4744, there has been a technique in which a swinging sorting board is provided below a handling cylinder, and a processing cylinder is provided perpendicularly to the handling cylinder.

However, in the above-mentioned prior art, since the grains shed from the handling drum were only conveyed to the processing drum by the swinging sorting board, the amount of straw waste or grains supplied to the processing drum could vary. In addition, on the supply side of the processing barrel, lumps of straw are taken in only on the outer periphery of the handling action, making it difficult to prevent damage to grains and improve reprocessing efficiency due to reprocessing. There were other problems.

However, the present invention is a threshing device in which a swinging sorting board is disposed below the handling drum, and a processing drum is installed in a direction substantially orthogonal to the rear side of the handling drum. The present invention is characterized in that the base end of the sorting line is attached to the upper surface of the sorting board, and the tip end of the sorting line extends within the handling action range of the processing cylinder.

Therefore, since the grains from the straw discharge port are supplied to the processing cylinder via the sorting line on the top surface of the swinging sorting board, the grains and grains mixed in the straw are not attached to the supply side of the processing cylinder. This is because the grains can be efficiently collected by the sorting line using the wind sorting force of the oscillating sorter, and the sorting lines are extended and overlapped within the handling range of the processing cylinder. The straw lumps can be reliably fed into the handling range of the processing cylinder by the sorting line, and the straw lumps can be broken down by the processing cylinder and the sorting line, thereby easily improving reprocessing efficiency.

Embodiments of the present invention will be described in detail below based on the drawings.

Fig. 1 is a side view of the combine harvester, and Fig. 2 is a plan view of the same. In the figure, 1 is a truck frame to which a running drive transmission 2 is attached, and 3 is a drive sprocket installed on both sides of the truck frame 1 via a running drive sprocket 4. 5 is a machine base supported by the track frame 1; 6 is a threshing section with a feed chain 7 stretched on the left side and a handling cylinder 8 built therein; Machine stand 5
14 is a straw cutter that faces the end of the straw removal chain 15; 16 is a straw collection table; 17 is an engine that drives each part of the combine; 18 2 is a paddy tank that faces the grain lifting cylinder 19 and stores the grains taken out from the threshing section 6; 20 is a driver's cab equipped with a driver's seat 21 and a driving operation section 22; side clutch levers 23, 23 and a reaping and threshing clutch lever; 2
4 and 25 are provided in front of the driver's seat 21, and a traveling speed change lever 26 is installed inside the driver's cab 20 on the left side of the driver's seat 21, so that grain culms are continuously harvested and threshed.

FIG. 3 is a cross-sectional side view of the threshing section 6, and FIG. 4 is a cross-sectional plan view of the same. In the figure, reference numeral 27 denotes a handling chamber in which an axial-flow type handling barrel 8 is mounted in the longitudinal direction of the machine body; 2
8 is a crimp net stretched below the handling chamber 27;
Reference numeral 29 denotes a swinging sorting board that is swingably supported in the front and rear directions via swing links 30 and the like, and includes a feed pan 31 located below the crimp net 28 and a feed pan 31 located below the crimp net 28 and the dust exhaust port 32. The swinging sorting board 29 is constituted by the chaff sheave 33 positioned and the sorting net 34 positioned below the chaff sheave 33.

In the figure, 35 is a fan that sends the sorting air in the direction of the sorting net 34, and 36 is the first fan that is installed in the first sorting gutter 37 and takes out the grains into the paddy tank 18 through the grain lifting tube 19. Conveyor, 38 is the second sorting gutter 39
A second conveyor 41 is installed in the second conveyor and returns the second reduced material to the handling chamber 27 via the second reducing thrower 40, and a second conveyor 41 is connected to the handling cylinder 8 at the rear end of the swinging sorting board 29 above the second sorting gutter 39. 42 is a concave which is a receiving net disposed on the lower peripheral side of the processing cylinder 41, 43 is a straw discharging incisor provided on the concave 42, and 44 is the processing cylinder Torso 4
A dust suction/exhaust fan, which is a cross-flow fan, is installed diagonally above the rear part of the machine; 45 is a third port for discharging dust and straw to the outside of the machine via the fan 44; This is a fourth gutter constructed above the processing cylinder 41 and the fan 44 to guide the waste straw to be discharged, and the grains threshed by the handling cylinder 8 are sorted by the swing sorting board 29, and only the granulation is done as described above. In addition to taking out the paddy into the tank 18, the structure is such that waste straw is discharged by the straw removal chain 15 and straw waste etc. are discharged from the machine by the fan 44.

Further, the base ends of a plurality of sorting lines 48 are fixed to the support frame 47 to which the rear end of the crimp net 28 is attached, and the rear tips of these sorting lines 48 are extended to between the processing teeth 49 of the processing cylinder 41. and the dust exhaust port 3
The processing cylinder 41 is configured to send a relatively large amount of threshed grains such as lump-shaped straw waste and kernels with stems discharged from the processing cylinder 41 from the processing cylinder 41.

Furthermore, as shown in FIG.
The front base ends of sieve wires 51, which are a plurality of sorting lines, are fixed to the rear of the chaff sheave 33 of No. 9 through brackets 50, and the rear tips of these sieve wires 51 are extended to between the processing teeth 49 of the processing cylinder 41. The rear end of the sieve wire 51 and the treated tooth 49 are set to a dimension t.
By wrapping, lumpy threshing grains such as straw waste and grains with branches falling from the rear end of the sieve wire 51 are dispersed by the handling action of the sieve wire 51 and the processing teeth 49. Further, as is clear from the above, in a threshing device in which the swing sorting board 29 is disposed below the handling drum 8 and the processing drum 41 is provided in a direction substantially perpendicular to the rear side of the handling drum 8, the rear part of the handling drum 8 is A base end of a sieve wire 51 serving as a sorting line is attached to the upper surface of the swinging sorting board 29 below the dust exhaust port 32, and the tip end of the sieve wire 51 is extended within the handling range of the processing cylinder 41.

The present embodiment is constructed as described above, and when grain culms are continuously harvested and threshed, the grains leaking from the crimp net 28 at the bottom of the handling chamber 27 are transferred to the feed pan 31, chaf sieve 33, and sorting net 34. It falls to the first sorting gutter 37 through the first conveyor 3.
The paddy is taken out to the paddy tank 18 via the paddy 6 and the lifting cylinder 19. Further, straw waste falling from the crimp net 28 and the dust outlet 32 is sent to the rear of the chaff sieve 33 and the upper surface of the sieve wire 51, and
The straw waste and grains with stems discharged behind the chaff sieve 33 are introduced into the outer periphery of the processing cylinder 41 through the sieve wire 51, and are passed downward by the processing cylinder 41. concave 4
The grains mixed with small straw waste, which is the second grain, fall from the concave 42 onto the upper surface of the second sorting gutter 39, and are transferred to the second conveyor 38.
The straw waste in the processing cylinder 41 is returned to the processing chamber 27 via the second thrower 40, and the straw waste is returned to the processing chamber 27 via the second thrower 40.
and is discharged outside the machine from the third port 46 by the fan 44.

By the way, the threshed grains, such as straw waste and grains with stems, which fall in a lump from the dust exhaust port 32 downward, fall onto the sorting line 48 and are directly introduced into the processing cylinder 41, which is different from conventional methods. This eliminates the inconvenience of lowering the sorting accuracy in the sorting section or increasing the number of second grains caused by dropping the lump-like threshed grains onto the oscillating sorting board 29. In other words, by dropping only comparatively small chunks of grain from between the sorting lines 48, the sorting efficiency of the swinging sorting board 29 is improved and the amount of second grain returned is reduced. be. In addition, the comparatively small grains of the lumps sent to the rear of the sorting plate 29, more specifically, the chaf sieve 33 and the upper surface of the sieve line 51, are removed by this sieve line 51.
The granules are well dispersed by the lap of dimension t between the rear end and the processing tooth 49, and more reliable shedding processing is performed between the processing cylinder 41 and the concave 42.

As is clear from the above embodiments, the present invention provides a threshing device in which a swing sorting board 29 is disposed below the handling cylinder 8, and a processing cylinder 41 is provided in a direction substantially perpendicular to the rear side of the handling cylinder 8. The base end of the sorting line 51 is attached to the upper surface of the swinging sorting board 29 below the dust exhaust port 32 at the rear of the processing cylinder 8, and the tip of the sorting line 51 is extended within the handling action range of the processing cylinder 41. Dust exhaust port 32
The granules from the granules are removed from the sorting line 51 on the top surface of the oscillating sorting board 29.
is supplied to the processing cylinder 41 via the processing cylinder 4.
The grains mixed in the straw and the straw to which the grains are attached can be separated on the supply side of 1, and the grains can be efficiently collected by the sorting line 51 using the wind sorting force of the oscillating sorting. Since the sorting lines 51 are extended and overlapped in the handling range of the processing cylinder 41, the straw lumps can be reliably fed into the handling range of the processing cylinder 41 by the sorting lines 51, and This provides practical effects such as being able to easily improve reprocessing efficiency by breaking down the straw lumps using the sorting lines 51.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention, in which Fig. 1 is an overall side view of the combine, Fig. 2 is a plan view thereof, Fig. 3 is a sectional side view of the threshing section, and Fig. 4 is a plan view thereof. , FIG. 5 is a partial view of the same. 8... handling cylinder, 27... handling room, 41... processing cylinder,
48, 51... Sorting line.

Claims (1)

[Scope of utility model registration request] In a threshing device in which a swing sorting board 29 is disposed below the handling drum 8 and a processing drum 41 is provided in a substantially orthogonal direction on the rear side of the handling drum 8, a dust outlet 3 at the rear of the handling drum 8 is provided.
2. A threshing device characterized in that a base end portion of a sorting line 51 is attached to the upper surface of a swinging sorting board 29 on the lower side, and a tip end portion of the sorting line 51 is extended within the handling action range of a processing cylinder 41.