JP2011130675A - Thresher of combine harvester - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a thresher of a combine harvester that has improved workability and productivity by arranging receiving nets from which threshed grains are efficiently leaked down. <P>SOLUTION: The thresher of a combine harvester includes a threshing cylinder 6 that is at the central part of a machine body and is pivotally installed in the longitudinal direction of the machine body and the receiving nets 33 that are arranged at the lower part circumference of the threshing cylinder 6 and above a grain flow plate 45 and a sieving device 47 and are equipped with a plurality of dropping holes 53. The receiving nets 33 have wavy shapes of continued recessed parts 55 and projected parts 56 including the dropping holes 53 in a right and left width from the front part to the rear part of the machine body. <P>COPYRIGHT: (C)2011,JPO&amp;INPIT

Description

  TECHNICAL FIELD The present invention relates to a combine threshing apparatus including a handling cylinder and a receiving net, and more specifically, a combine including a receiving net that easily causes threshing of cereals from threshing in a handling cylinder to leak to a lower sorting apparatus. Relates to the threshing apparatus.

  Conventionally, the cereal harvested by the cutting part at the tip of the machine body is conveyed to the rear of the cutting part, and the threshing process is performed with the handling cylinder of the threshing device in the threshing part, and the threshing material is received from the receiving net provided below the handling cylinder, There is one that causes the sorting device disposed below to leak. Then, in order to efficiently leak the degranulated material in the receiving net, for example, the size of the hole formed in the receiving net is changed depending on the position of the receiving net, and clogging of the degranulated material is caused at the front part of the receiving net. Preventing and making it easy to leak the flocculated material (for example, Patent Document 1) and installing an auxiliary bow on the receiving net to reduce the movement resistance of the cereal, and adding the flocculated material to the main arch There is also an auxiliary bow that is received (for example, Patent Document 2) that promotes leakage of the degranulated material.

JP 2005-095057 A JP 2007-1111012 A

However, the receiving net curvedly installed along the handling cylinder as described above is formed by forming a plurality of holes in a flat material and is threshed by the handling cylinder provided above. Since the fallen grains from the falling cereals stay in places other than the holes on the receiving net, there is a problem in that they cannot be efficiently leaked downward from these holes. In particular, in the receiving net as in Patent Document 2, there is also a risk that the degranulated material may come into contact with the bow metal and be damaged.
Accordingly, an object of the present invention is to provide a combine threshing apparatus that is improved in workability and productivity by including a receiving net that can efficiently leak shed matter.

  For this reason, the invention according to claim 1 is a central part of the airframe, and a handling cylinder that is pivoted in the front-rear direction of the airframe, a lower periphery of the handling cylinder, and an upper part of the cereal plate and the sieving device In the combine threshing apparatus comprising a receiving net having a plurality of perforations formed therein, the receiving net has a concavo-convex portion including the perforations continuous in a lateral width from the front to the rear of the body. A wave shape is provided.

  The invention according to claim 2 is the combine threshing device according to claim 1, wherein the receiving net has the holes formed at equal intervals in an inclined portion connecting the top and bottom of each uneven portion. It is characterized by.

  A third aspect of the present invention is the combine threshing apparatus according to the first aspect, wherein the receiving net is formed by forming the bottoms of the uneven portions with the holes.

  A fourth aspect of the present invention is the combine threshing apparatus according to the first aspect, wherein the angle of the inclined portion is at least 120 degrees with respect to the bottom of the adjacent uneven portion.

According to invention of Claim 1, it is the center part of an airframe, It installs in the lower part circumference of this handling cylinder, and the upper part of a flow grain board and a sieving apparatus, which was pivoted in the front-back direction of the aircraft. In the combine threshing apparatus comprising a receiving net having a plurality of punched holes, the receiving net has a wave shape in which uneven portions including the punched holes are continuously provided in the lateral width from the front part to the rear part of the machine body. Therefore, the fallen grain from the handling cylinder is guided without resistance along the inclined surface of the inclined portion from the top of each convex portion by the unevenness formed three-dimensionally in the vertical height direction of the receiving net surface. It can slide down and can be efficiently dropped to the selection part from each hole formed in these inclined surfaces. Therefore, it is possible to provide a combine threshing device with improved threshing and sorting capabilities.
can do.

  According to the second aspect of the present invention, the receiving net has the holes formed at equal intervals in the inclined portion that connects the top and bottom of each concave and convex portion. When sliding along with its own weight, it can be easily dropped from the hole to the sorting section. Therefore, it is possible to provide a combine threshing device with improved threshing and sorting capabilities.

  According to the third aspect of the present invention, since the receiving net is formed by punching the bottom of each uneven portion, the fallen grains from the handling cylinder are moved by the dead weight along the inclined portion to the bottom of each uneven portion. By sliding it down, it can be easily dropped from the hole to the sorting part. Therefore, it is possible to provide a combine threshing device with improved threshing and sorting capabilities.

  According to invention of Claim 4, since the angle of an inclination part has at least 120 degree | times with respect to the bottom part of an adjacent uneven | corrugated | grooved part, the fallen grain from a handling cylinder is 120 from the top part of each convex part. It can be guided without resistance along the inclined surface of the inclined portion, and can be efficiently dropped from each hole onto the sorting portion. Therefore, it is possible to provide a combine threshing device with improved threshing and sorting capabilities.

The whole side view of a combine. The whole top view of a combine. It is a left view of a cereal conveyance apparatus. It is a left side schematic diagram of a threshing part and a selection part. It is a perspective view of the handling cylinder explaining the installation state of a receiving net. It is a top view of a receiving network. It is a whole front view of a receiving network. It is the perspective view which looked at the receiving net from the upper part. It is the enlarged front view which showed a part of receiving network. It is an enlarged perspective view of a part of a hole. It is the perspective view which expanded and showed the punching hole further. FIG. 6 is a development view of a receiving network showing a part of the receiving network in which holes having different sizes are formed. It is the perspective view which looked at a part of receiving net from the upper part which shows the extraction hole drilled in the recessed part.

The best mode for carrying out the present invention will be described below with reference to the drawings.
1 is a right side view of a self-decomposing combine as an example of the present invention, FIG. 2 is a left side view of the combine of FIG. 1, FIG. 3 is a side view of a cereal conveyor, and FIG. It is a left side schematic diagram.

  First, as shown in FIGS. 1 to 3, the combine 1 has a pair of left and right traveling crawlers 3 mounted on a pair of left and right track frames 2, and a machine base 4 is installed on the left and right track frames 2. Further, on the machine base 4, a threshing device 7 including a pulling mechanism 8, a cutting blade 9, and a harvested product conveying means 10, and a feed chain 18 is stretched on the left side of the machine body and a handling cylinder 6 is built in. A certain threshing unit 5, a sewage processing unit 11 that faces the end of the sewage chain, a Glen tank 12 that carries the slag from the threshing unit 5 through a milling cylinder, and a discharge that transports the slag from this grain tank 12 out of the machine An auger 13 or the like is installed.

  Further, a handle 14, a driver seat 15, and an engine E are provided below the driver seat 15 on the machine base 4 at the front of the machine body. It is configured to harvest and thresh crops.

  A vertical auger 16 of a discharge auger 13 for discharging the soot in the Glen tank 12 to the outside is erected at the rear of the machine base 3, and the Glen tank 12 rotates left and right around the vertical auger 16. It is provided so as to be movable, and is configured such that it can be opened by rotating the front side of the Glen tank 12 outward. In addition, a cereal conveyance device 17 is provided in the rear part of the machine base 3 continuously to the threshing unit 5.

  The cereals harvested by the reaping unit 7 are conveyed to the rear by the harvested product conveying means 10, and the stocker side is inherited from the upper end of the harvested product conveying means 10 to the feed chain 18 of the cultivated item conveying device 17, and the handling cylinder 6 The cereal meal is transported into the threshing apparatus comprising the threshing section 5 and the sorting section 19 through the supply start end. A waste transport chain 20 is disposed at the rear end of the feed chain 18, and a waste processing section (not shown) made up of a cutter, a binding machine and the like is formed below the rear of the waste transport chain 20, After cutting into pieces, it is released uniformly into the field while diffusing, or released without cutting.

  The threshing unit 5 is arranged on the left side in the traveling direction of the combine 1, and the grain tank 12 for storing the refined grains after sorting is arranged on the right side of the threshing unit 4. A driver seat 15 is disposed in front of the Glen tank 12. That is, the driver's seat 15 is disposed on the right front side in the traveling direction of the aircraft. On the other hand, a vertical auger 16 of a discharge auger 13 is erected on the rear side of the Glen tank 12 so that the discharge auger 13 and the Glen tank 12 can be turned sideways around the vertical auger 16. By rotating in the direction, maintenance of the drive system and the hydraulic system arranged inside the machine body is facilitated.

  A discharge conveyor (not shown) is disposed at the bottom of the Glen tank 12 in the front-rear direction, the rear portion of the discharge conveyor communicates with the lower portion of the vertical auger 16, and power is supplied from the rear portion of the discharge conveyor to the discharge auger 13. The grain in the Glen tank 12 can be discharged from the tip of the discharge auger 13 to a truck or the like. Further, below the threshing unit 5, a sorting unit 19 is arranged to sort the grains from grains and swarf flowing down from the threshing unit 5, and to transport the refined grains to the glen tank 12, Etc. are discharged outside the machine.

  In the above-mentioned threshing unit 5, the cereal conveying device 17 is for conveying while squeezing one end (stock source side) of the harvested cereal, and rejecting and conveying the cereal harvested by the reaping unit 7. A feed chain 18 that conveys the chain 20, a clip 21 that is disposed above the feed chain 18 and clamps the cereal that is being conveyed, and a plurality that elastically supports the clamp 21 with respect to the machine side The elastic support 22 and the like.

  In this culm transporting device 17, the stocker side of the culm harvested by the reaping unit 7 is sandwiched between the opposingly disposed crabs 21 and the feed chain 18 and threshed by the handling cylinder 6 in the handling chamber. The portion where the clip 21 and the feed chain 18 face each other is used as a conveyance path. Then, the waste that has been shed by the threshing unit 5 is passed to the waste transport chain 20 at the rear end (downstream end) of the feed chain 18, and the waste transport chain 20 causes the waste to be removed. It is conveyed to the processing unit.

  The clamp 21 is provided by a support rod 24 fixed by a stay 23 and the like, and elastically supported by the support rod 24 via a plurality of elastic supports 22. The clamp 21 has a shape in which a pair of plate-like members are arranged in parallel to the left and right along the feed chain 18, and is formed in a reverse U-shape when viewed in the conveying direction by the feed chain 18. .

  The support rod 24 is a hollow columnar member, and is formed so as to be long in the front-rear direction on the left side in the handling chamber cover (not shown) and to be arranged in parallel with the pinching rod 21. On the side surface of the support rod 24, the elastic support 22 is arranged at regular intervals while the upper portion thereof is supported and disposed, and the clamp 21 is elastically supported on the lower portion of the elastic support 22. . The lower part of the elastic support 22 is pivotally supported by the pin 21 with a connecting pin, and the upper part of the elastic support 22 extends above the support bar 24.

  Next, the threshing unit 5 will be described. As shown in FIG. 4, the handling chamber 31 formed in the threshing unit 5 is provided with a substantially cylindrical handling cylinder 6 pivoted in the front-rear direction of the machine body. The teeth 32 are implanted. A semicircular receiving net 33 is detachably provided so as to cover the lower periphery of the barrel 6. On the other hand, the feed chain 18 restrains the stock side of the grain straw while the tip side of the grain straw is inserted below the barrel 6 and the grain straw is conveyed to the rear of the machine body. At this time, threshing is performed by rotation of the barrel 6 so that grains, sawdust and the like leak from the receiving net 33.

  Next, the selection unit 19 will be described. The sorting unit 19 performs swing sorting by the swing sorting device 41 and wind sorting by the Kara 42, and is sorted into the first thing, the second thing, the sawdust, and the like.

  The swing sorting device 41 is housed in the machine casing 43. The front end portion of the swing sorting device 41 extends to a position below the front end portion of the handling cylinder 6, and a swing shaft (not shown) is provided at the front lower portion of the swing sorting device 41, and a swing drive mechanism is provided at the rear portion. 44 is provided, and the swing selection device 41 is configured to swing with respect to the machine frame 43 by the swing drive mechanism 44. A fuel tank (not shown) is disposed below the swing drive mechanism 44.

  At the front portion of the swing sorting device 41, a drifting grain plate 45 is provided, and a conveying plate 46 is provided below and below the drifting grain plate 45. These cereal plates 45 and conveying plates 46 are formed by corrugating plate-like members, and the processed material (mixture with grains and swarf etc.) that has passed through the receiving net 33 is the cereal plate 45 and It falls onto the transport plate 46 and is transported to the rear of the machine body by the swing of the swing sorting device 41. A net-like grain sieve 47 as a second sorting section is continuously provided at the rear part of the conveying plate 46, and above the grain sieve (sieving device) 47 and the conveying plate 46 and behind the cereal plate 45. A chaff sheave 48, which is a first sorting unit, is mounted. Further, a stroller 49 is disposed behind the chaff sheave 48.

  The chaff sheave 48 is composed of a plurality of chaff fins, and can adjust the opening degree of the chaff fins according to the amount of the processed material to be input. That is, the upper and lower end portions of the chaff fin are pivotally supported by the swing sorting device 41 and are pivotally connected to swing plates provided on the left and right sides of the chaff sheave 48, and the other end portions are provided on the left and right sides of the chaff sheave 48. It is pivotally connected to the provided sliding plate. The sliding plate is swung integrally with the swing sorting device 41, and an adjusting lever is pivotally connected to the sliding plate. The sliding plate is slid by loosening or pulling the wire connected to the adjusting lever. The plate is slid back and forth. The adjustment lever is urged in a direction to make the inclination angle of each chaff fin small (lay down) by a spring provided on the opposite side of the wire.

  Then, when the angle of the chaff fin is changed by sliding of the sliding plate and the inclination angle of the chaff fin is made large (standing), the opening amount of the chaff sheave 48 is increased to increase the amount of grain leakage, When the inclination angle is made small (sleeps), the opening amount of the chaff sheave 48 is made small so that the amount of grain leakage is reduced.

  Thus, the grains and fine swarf pass through the chaff sheave 48 and fall downward, and swarf and the like larger than the opening of the chaff sheave 48 are conveyed backward. At this time, an air flow from the front to the rear of the sorting unit 19 is generated between the chaff sheave 48 and the grain sheave 47 by the tang koji 42, and a part of the fine swarf is blown back and separated from the grains. The

  Further, a red pepper 42 is disposed below the front part of the front-flow grain board 45 and below the front part of the rear-flow grain board 46 in the swing sorting device 19 so as to blow the sorting wind to the chaff sheave 48 and the grain sieve 47. .

  A suction fan (cross-flow fan) 50 is installed in the vicinity of the rear end portion of the oscillating sorting device 41, and is generated at the time of dust or threshing that has been carried on the flow of the sorting wind supplied from the Kara 42. Dust and the like are sucked by the suction fan 50 and discharged outside the apparatus.

  A mixture of grains, shoots adhering grains, immature grains, and fine swarf that have been introduced into the sorting unit 19 and leaked onto the front-flow grain board 45 is added to the chaff sheave 48 in the process of leakage. Due to the air flow from the front to the rear of the sorting unit 19 generated by 42, a part of the fine sawdust is blown away backward. Then, the mixture of grains, shoots adhering grains, immature grains and fine shavings that have leaked onto the chaff sheave 48 is conveyed rearward by the swinging of the swing sorting device 41. At this time, these grains Grains, immature grains, shoots adhering grains, fine swarf, etc. fall below the opening of the chaff sheave 48, and large swarf is transported to the rear of the chaff sheave 48 and is discharged out of the machine through the stroller 49. The

  In addition, the grains, the immature grains, the shoots adhering grains, the fine shavings, and the like that have dropped below the opening of the chaff sheave 48 are leaked onto the backflow grain plate 46 and the grain sieve 47. At this time, a part of the fine swarf is blown away and separated by the sorting air from the tang 42.

  Further, among the grains, immature grains, shoot adhering grains, and fine swarf leaked on the grain sieve 47, the grain, immature grain, fine swarf, etc. pass through the grain sieve 47 and move downward. Fall. At this time, the heaviest grain (first) is collected by the first collecting unit 51, and conveyed from the first conveyor (not shown) to the grain tank 12 via the cereal conveyor.

  On the other hand, unprocessed grains mixed with immature grains with a small weight, a part of fine swarf, spiked grains, grains, etc. are blown rearward by the sorting wind from the Karatsu 42 and collected in the second collecting section 52. Then, the second conveyor (not shown) passes through the second reduction conveyor, and is re-introduced onto the upstream cereal board 45 (or the chaff sheave 48).

  Next, a specific configuration of the receiving network, which is a feature of the present invention, will be described. 5 is a perspective view of a handling cylinder for explaining the installation state of the receiving net, FIG. 6 is a plan view of the receiving net, FIG. 7 is an overall front view of the receiving net, and FIG. 8 is a perspective view of the receiving net viewed from above. 9 is an enlarged front view showing a part of the receiving net, FIG. 10 is an enlarged perspective view of a part of the hole, and FIG. 11 is a perspective view showing the hole further enlarged.

  As shown in FIG. 5 together with the above description, a substantially semicircular receiving net 33 made of a metal such as stainless steel is detachable so as to cover the lower periphery of the handling cylinder 6 below the handling cylinder 6 in the threshing portion 5. Around.

  The receiving net 33 opens a feed chain frame (not shown) that supports a feed chain 18 configured to be openable and closable with respect to the side of the machine body, and is provided on the machine side from the machine body side. It can be attached or detached by pulling out or inserting in an arc along the rail provided in the.

  For example, as shown in FIGS. 6 to 8, the receiving net 33 has a thin plate body 52 fixed in a net frame 51, and a rectangular hole 53 is formed in the plate body 52 in the longitudinal direction of the machine body. A plurality of meshes are formed at equal intervals in the left-right direction. Note that the hole 53 is not limited to the above-described square shape.

  In the present application, the plate body 52 is formed in a wave shape having irregularities in a front view. In other words, the plate body 52 is provided with an uneven shape 54 with the front-rear width of the plate body 52 along the left-right direction of the machine body in the direction mounted below the handling cylinder 6.

  As shown in FIG. 9, the concavo-convex shape 54 is configured by repeating a convex portion 55 and a concave portion 56, and for example, the height h of the convex portion 55 (the height from the top of the convex portion 55 to the upper end portion of the concave portion 56. ) Is about 2 mm to 4 mm, preferably 3 mm, and the inclination angle α of the inclined portion s of each convex portion 55 (the inclination angle from the bottom of each concave portion 56 to the convex portion 55 adjacent to this concave portion 56) is 110. It can be set to about -130 degrees, preferably 120 degrees.

  Note that the radius from the center of the circle in the substantially semicircular receiving net 33 to the top of the convex portion 55 varies depending on the size of the handling cylinder 6 depending on the model, and the size of the receiving net 33 varies. In the receiving net 33, it can be 291.3 mm.

  Further, for example, as shown in FIG. 10, a hole 53 is formed in the front-rear direction of the receiving net 33 provided on the surface of the plate body 52 having the concavo-convex shape 54 on both the left and right inclined surfaces of each convex portion 55. A plurality of holes are drilled at equal intervals along.

  With such a configuration, some grains that have been threshed by the handling cylinder 6 and dropped onto the lower receiving net 33 fall on the lower sorting unit 19 through the hole 53 as they are. However, on the other hand, when being guided and slid down from the top of each convex portion 55 to each convex portion 55 below along the inclined surface of the convex portion 55, it is selected from each hole 53 formed in the inclined surface of the convex portion 55. It falls on the part 19.

  Therefore, conventionally, the grains dropped by the treatment in the handling cylinder 6 are not guided and dropped into the holes in the holes formed two-dimensionally in the plate body of the receiving net, but remain between the holes, and the grains Could not be efficiently dropped onto the sorting section 19.

  However, in the receiving net 33 having the uneven shape 54 formed three-dimensionally in the plate body 52 of the receiving net 33 of the present application, as shown in FIG. It can be guided without resistance along the inclined surface of the inclined portion s of 120 degrees from the top of the portion 55 and slide down, and can be efficiently dropped onto the selecting portion 19 from the respective through holes 53 formed in these inclined surfaces. And improve threshing and sorting throughput.

  The size of the above-described hole may be changed depending on the drilling position in the receiving net 33. FIG. 12 is a developed view of the receiving network showing a part of the receiving network in which holes having different sizes are formed.

  In this case, the cereal plate 45 is located below the front part of the installed receiving net 33, the grain sieve 47 is located below the central part of the receiving net 33, and the chaff sheave is located below the rear part of the receiving net 33. 48 is located. For example, the opening area of each hole 53 a in the front part “a” of the receiving net 33 is formed larger than the opening area of each hole 53 b in the central part “b” of the receiving net 33.

  In addition, the opening area of each hole 53 c provided in the rear part c of the receiving net 33 is formed larger than the opening area of each hole 53 a provided in the front part a of the receiving net 33.

  By configuring in this way, the front part a of the receiving net 33 located below the front part of the handling cylinder 6 has each opening 53b in which the opening area of the opening 53a of the receiving net 33 is in the central part b of the receiving net 33. Therefore, the processed material by the handling cylinder 6 is likely to leak onto the drifted grain plate 45 serving as the start end of the swing sorting device 41. Therefore, even if the cereals are transported in a large amount and the amount of processing by the handling cylinder 6 increases, clogging does not occur in the front part a of the receiving net 33 and leakage of the processed material in the front part a of the receiving net 23 is prevented. It can be promoted, and the sorting can be performed efficiently with the cereal board 45.

  Next, since the opening area of the hole 53b is smaller than the opening area of the hole 53a, the receiving net 33 located below the center part of the handling cylinder 6 is relatively difficult to leak the processed material from the hole 53b. Become. Therefore, since the amount of the processed material that has leaked through the hole 53b after the rough degranulation is relatively small, it is possible to prevent clogging that occurs when the processed material concentrates when the processed material drops from the grain sieve 47.

  Furthermore, from the rear part c of the receiving net 23 having the opening 53c having a larger opening area than the openings 53a and 53b, processed products such as grains sufficiently processed by the handling cylinder 6 and immature grains are likely to leak. , The grain passes through the chaff sheave 38 and is recovered as the first thing, and the untreated grain mixed with immature grain, a part of fine swarf, and ear cut grain is sent backward by rocking, It is blown rearward by the sorting wind from the Kara 42 and sent to the collection section as the second item. As described above, by changing the opening areas of the holes 53a, 53b, and 53c depending on the position of the receiving net 33, it is possible to efficiently sort the processed materials.

  Further, the hole may be formed only in the recess. FIG. 13 is a perspective view showing a part of the receiving net as viewed from above, showing a hole formed in the recess.

  In this case, in the concave-convex shape 54 formed in the plate body 52 of the receiving net 33, the receiving net 33 is mounted, and a plurality of holes 53 ′ are formed at equal intervals in the left-right direction of the body of each recess 56. The

  With such a configuration, some fallen grains from the handling cylinder 6 fall on the sorting unit 19 below further through the hole 53 ′, but on the other hand, It is guided and slid down from the top to the respective concave portions 56 along the inclined surfaces of the convex portions 55, and falls onto the sorting portions 19 from the respective through holes 53 ′ drilled in the concave portions 56.

  Therefore, the fallen grain from the barrel 6 is guided without sliding in the recesses 56 along the inclined surface of 120 ° from the top of each projection 55 and slides, and the respective holes 53 formed in these recesses 56. Can be efficiently dropped onto the sorting unit 19 from ′, and the processing ability of threshing and sorting can be improved.

  As described above in detail, the threshing device of the combine 1 of this example is the center part of the machine body, the handling cylinder 6 pivoted in the front-rear direction of the machine body, the lower periphery of the handling cylinder 6, and the drifting cereal board. 45 and a sieving device 33 installed above the sieving device 47 and formed with a plurality of perforations 53. The perforations 33 include a perforation 53 in the lateral width from the front to the rear of the machine body. It has a wave shape in which the concave and convex portions 55 and 56 are continuous.

  In addition, this invention is applicable to all the combine provided with the threshing apparatus which has a receiving net | network which cuts and threshs the cereal grain of a field continuously.

6 Handling cylinder 33 Receiving net 51 Net frame 52 Plate body 53, 53a, 53b, 53c, 53 'Punching hole 54 Concavity and convexity 55 Convex part 56 Concave part a Front part b Center part c Rear part s Inclination part h Height α Inclination angle

Claims (4)

A central portion of the aircraft, and a handling cylinder pivoted in the front-rear direction of the aircraft;
A receiving net that is installed around the lower part of the handling cylinder and above the cereal board and the sieving device, and has a plurality of holes,
In the combine threshing apparatus consisting of
The threshing apparatus for a combine according to claim 1, wherein the receiving net is provided with a wave shape in which a concavo-convex portion including the hole is continuously provided in a lateral width from a front portion to a rear portion of the machine body.   The combine threshing device according to claim 1, wherein the receiving net has the holes formed at equal intervals in an inclined portion connecting top and bottom portions of the uneven portions.   2. The combine threshing device according to claim 1, wherein the receiving net is formed by forming the bottom of each of the uneven portions with the hole.   The combine threshing apparatus according to claim 1, wherein an angle of the inclined portion is at least 120 degrees with respect to a bottom portion of the adjacent uneven portion.

Images