JP2009005641A - Thresher - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a thresher which can effectively use air blown from a winnower for the sorting of grains to enhance performance and efficiency for sorting the grains from treated materials. <P>SOLUTION: The sieves (53a, 53b..., 54a, 54b...) of chaff sieves 53, 54 for sorting grains by wind from treated materials leaked from a threshing chamber 66 and backward conveying the grains are disposed so that the lower end connection lines A1, B1 of the sieves have mountain-like shapes on the side view. Thus, distances between the sieves 53, 54 and a lower sorting net 63 are enlarged due to spaces between the tops of the mountains and the sorting net 63 to improve the sorting of the grains by virtue of swinging movements. The upper end connection lines A2, B2 of the sieves are disposed so that the tops form one mountain-like shape on the side view, and the inclination angle of the upper end connection line B2 of the rear side second chaff sieve 54 to the horizontal surface is smaller than that of the upper end connection line A2 of the front side first chaff sieve 53. Thus, in the first chaff sieve 53, the treated materials are hardly flowed backward to accelerate the filtration of the treated materials. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention relates to a threshing device mounted on a combine or the like.

The combine is composed of a cereal reaping device, a threshing device, a Glen tank that temporarily stores after threshing, an auger that discharges the grain stored in the Glen tank, and the like.
In the handling room, which is the main threshing part of the threshing device, the culm harvested by the reaping device is inserted. Threshed by action. The material to be processed (grains and wastes) separated from the cereal passes through the handling net and is received by the swing shelf in the sorting room, and separates the second cereal and swarf to remove only the cereal. Transport to Glen Tank.

  The second kernel is sent to the second processing chamber provided on the side of the handling room, and is separated into grains, branch rachis, etc. by the second processing cylinder, and falls again on the swing shelf, and the grains and sawdust And so on. Short items such as sawdust generated in the handling chamber are transported to the dust disposal chamber and processed by the dust disposal cylinder.

  In the handling room in which the cereals are first inserted in the threshing device, most of the cereals are threshed by rotating the handling cylinder while the workpiece is being conveyed. In addition, the object to be processed that falls from the handling chamber is subjected to wind sorting in the sorting chamber while receiving air from the tang of the rear sheave while moving on a swinging shelf that swings up and down and back and forth. Sorted by

  In the sorting room, the objects to be processed that have moved on the swing shelf and the objects to be dropped from the handling chamber are sorted out. Grain selection failure may occur.

  In addition, if the length of the sorting chamber is increased in order to increase the grain sorting performance, the entire combine cannot be made compact.

Therefore, according to the following Patent Document 1, the upstream side end portion of the first wind direction plate that divides the selection air from the tang is divided into the upper side and the lower side so that the selection air can be effectively supplied. In addition, the downstream side end portion is disposed so as to protrude rearward from the rear end portion of the air passage case, and the upward wind is formed so as to direct the lower wind toward the first flow grain plate provided on the bottom surface of the sorting chamber. , Improving the grain sorting performance.
JP 2006-254823 A

  According to the configuration described in the above-mentioned Patent Document 1, even if the chaff sheave is made close to the tang and the entire combine is made compact, that is, even if the chaff sheave is arranged in the front, the downward wind is reflected on the first flow cereal plate. It can be directed upward, and the sorting air can be supplied to the entire chaff sheave.

However, according to the configuration described in Patent Document 1, when the air blown from the tang is divided by the first wind direction plate or when the downward wind hits the first flow direction plate, the first wind direction plate or the first flow direction plate. Loss of the air volume that bounces when hitting. Therefore, even if the downward wind is reflected on the first cereal plate and the sorting wind can be supplied to the entire upper chaff sheave, the amount and speed of the sorting wind is reduced, so it cannot be said that the sorting wind is sufficient. The blast is not effectively used for grain sorting.
And when the sorting performance of a grain falls, the sorting processing performance of the whole threshing apparatus will also be affected.

  An object of the present invention is to solve the above-mentioned problems, and the threshing apparatus has been improved in that the air blown from the tang is effectively used for sorting the grains, and the sorting performance and sorting efficiency of the grains from the workpiece are improved. Is an offer.

The above problem can be solved by the following solution means.
The invention described in claim 1 includes a handling chamber (66) in which a handling cylinder (69) provided with a tooth handling (69a) for separating the grain from the cereal cocoon is mounted, and the handling chamber (66). A chaff sheave (53, 54) that is provided below and transfers the material to be treated leaking from the handling chamber (66) to the rear while sorting wind power, and is provided below the chaff sheave (53, 54), and is processed from the material to be treated to the grain. In the threshing apparatus provided with a sorting section (50) provided with a sorting net (63) for sorting grains, the chaff sheave (53, 54) is a plurality of sheaves arranged in the transfer direction of the workpiece. (53a, 53b, 53c... 54a, 54b, 54c...), And the sheaves (53a, 53b, 53c... 54a, 54b, 54c...) Are connected to the sheaves (53a, 53b, 53c. , 54b, 54c... The lower end portion connecting line is a threshing apparatus provided such that a mountain-shaped in a side view.

  According to a second aspect of the present invention, the plurality of sheaves (53a, 53b, 53c ..., 54a, 54b, 54c ...) of the chaff sheave (53, 54) are the sheaves (53a, 53b, 53c ..., 54a, 54b, 54c). The threshing device according to claim 1, wherein the front side of the upper end connecting line connecting the upper ends of ... is provided so as to be inclined upward in a side view.

  According to a third aspect of the present invention, the upper end connecting line connecting the upper ends of the plurality of sheaves (53a, 53b, 53c..., 54a, 54b, 54c...) Of the chaff sheave (53, 54) has a vertex in a side view. The chaff sheave (53, 54) is formed of a first chaff sheave (53) on the front side of the apex of the upper end connecting line and a second chaff sheave (54) on the rear side, and the second chaff sheave (54) is formed. The threshing apparatus according to claim 1, wherein an inclination angle of the upper end connection line of (54) with respect to a horizontal plane is set smaller than an inclination angle of the upper end connection line of the first chaff sheave (53) with respect to the horizontal plane.

  In addition, the “mountain shape” in the present specification includes an inverted V shape and an inverted U shape, and it is sufficient that there is one or more peaks. Further, the connecting line at the lower end and the upper end of each sheave does not have to be a straight line, and may form a “mountain shape” as a whole.

  According to the first aspect of the present invention, the lower end connecting line is formed such that the lower end connecting line connecting the lower ends of the sheaves of the chaff sheaves 53 and 54 that are the filtering part of the sorting unit 50 has a mountain shape in a side view. By arranging each sheave in a bent state, the chaff sheaves 53 and 54 have a portion in which the distance between the apex portion and the lower selection net 63 is ensured to be larger than when the sheaves are horizontally provided on the same position in a straight line. As a result, separation of dust and grains such as dust by floating selection by swinging motion is good.

  Further, since the lower end connecting line of the chaff sheaves 53 and 54 is mountain-shaped, an opening (space) is formed between the chaff sheaves 53 and 54 and the sorting net 63, and the chaff sheaves 53 and 54 and the sorting net 63 Since the gap is wide, the sorting wind from the tang 79 is less likely to stay due to flow resistance between the chaff sheaves 53, 54 and the sorting net 63, and the sorting wind is better removed, so the sorting is good. It becomes.

  And, by arranging the chaff sheaves 53 and 54 in this way, when the same number of sheaves are arranged, the length of the chaff sheaves 53 and 54 in the front-rear direction is not longer than when the sheaves are arranged on a straight line. Therefore, the length of the sorting unit 50 in the longitudinal direction is not increased, and the entire combine can be made compact.

  According to the invention described in claim 2, in addition to the effect of the invention described in claim 1, the front side of the upper end connecting line of the chaff sheaves 53, 54 is inclined upward in the side view, so that the amount of the object to be processed is large. Further, by widening the space between the upper ends of the chaff sheaves 53 and 54 on the front side and the handling chamber 66 and increasing the passage for the object to be processed, the grain sorting efficiency is improved.

  According to the third aspect of the present invention, in addition to the effect of the first aspect, the inclination angle of the upper end connection line of the first chaff sheave 54 with respect to the horizontal plane is the horizontal plane of the upper end connection line of the second chaff sheave 53. Since the workpiece is not easily flown backward, the filtration of the workpiece in the first chaff sheave 53 is promoted.

  The inclination angle of the upper end connection line of each sheave 54a, 54b, 54c... Of the second chaff sheave 54 on the rear side with respect to the horizontal plane is gentler than the inclination angle of the upper end connection line of the first chaff sheave 53 with respect to the horizontal plane. Since the upper ends of the sheaves 54a, 54b, 54c,... Of the second chaff sheave 54 are arranged at a gentle downward slope, the object to be processed is not rapidly transferred backward in the second chaff sheave 54, and the first chaff sheave 53 By filtering a large amount of the processed material that has been processed and the ratio of the grains decreased, the screening is sufficiently performed, so the processed material is less likely to easily fall on the rear second shelf 85, It is possible to prevent the deterioration of sorting and the increase of the second reduction amount.

  FIG. 1 shows a left side view of a combine that performs a grain harvesting operation according to an embodiment of the present invention, and FIG. 2 shows a plan view of the combine of FIG. 3 shows a partially cut-away side cross-sectional view of the combine threshing apparatus of FIG. 1, FIG. 4 shows an SS line view of the combine threshing apparatus of FIG. 3, and FIG. 3 is a cross-sectional view taken along line AA of the combine threshing apparatus of FIG. 3, FIG. 6 is a cross-sectional view taken along line BB of the combine threshing apparatus of FIG. 3, and FIG. CC sectional view of the threshing apparatus of FIG. In the present embodiment, the front side and the rear side in the forward direction of the combine are referred to as front and rear, respectively, and the left side and right side are referred to as left and right, respectively.

  At the lower part of the traveling frame 2 of the combine 1 shown in FIGS. 1 and 2, there is a pair of left and right crawlers 4 made of a flexible material such as rubber and formed into an endless belt shape. The crawler 4 is provided with a traveling device 3 configured to be able to travel freely with a slight sink, a cutting device 6 is mounted on the front portion of the traveling frame 2, and an engine and a threshing device 15 (not shown) are installed on the upper portion of the traveling frame 2, The cockpit 20 and the Glen tank 30 are mounted.

  The reaping device 6 is configured such that the entire reaping device 6 can be lifted and lowered by a telescopic action of a reaping lifting cylinder (not shown), and cereals vegetated on the farm can be harvested at a predetermined height. The weeding tool 7 is disposed at the lower part of the front end of the reaping device 6, the cereal raising device 8 having an inclined shape behind it, and a cutting blade (not shown) at the rear bottom thereof. Between the cutting blade and the starting end of the feed chain 14 of the threshing device 15, the transfer device 9 such as the front transfer device, the handling depth adjustment device, the supply transfer device, etc. is successively transferred and transferred to the cereals. It is arranged so that it can.

  The operation of the harvesting device 6 of the combine 1 is performed as follows. First, the engine is started and the operation levers for shifting, steering, etc. are operated so that the combine 1 moves forward, and the cutting and threshing clutch (not shown) is inserted and operated to transmit the rotating parts of the aircraft. When the traveling frame 2 is caused to travel forward, cutting and threshing operations are started. The cereals to be planted in the field are subject to weeding by the weeding tool 7 at the lower front end of the reaping device 6, and then the culm is raised and the device 8 is raised to bring it upright if it is lying down. The cereal stock reaches the cutting blade and is cut, and is scraped into the front transport device and transported rearward, and is inherited by the handling depth adjusting device and the supply transport device, and is successively transferred to the upper rear portion. Be transported.

  The cereal flour is inherited from the supply conveyance device to the start end of the feed chain 14 and supplied to the threshing device 15. In the threshing device 15, a handling chamber 69 surrounded by a front front plate 107 and a rear rear plate 108 is arranged with a handling cylinder 69 pivoted on the upper side, and the sorting unit 50 is integrated below the handling chamber 66. Threshing and sorting the harvested cereal meals supplied.

  As will be described in detail later, the cereal mash supplied to the threshing device 15 is inserted into a handling chamber 66 which is a main threshing portion, and a plurality of teeth 69a of a handling drum 69 which is pivoted on the handling chamber 66 and rotated. The threshing is performed by the transfer by the feed chain 14 and the interaction with the handling net 74, and the object to be processed (grains and wastes) is received by the swing shelf 51 of the sorting unit 50 in the threshing device 15, and up and down While moving on the swinging shelf 51 swinging in the wind, the wind is sorted by receiving air from the tang 79, and the grains with heavy specific gravity pass through the first sheave 55, the chaff sheaves 53, 54 and the sorting net 63, From the first spiral 65 a provided in the groove on the shelf plate 64, it is transported to the Glen tank 30 through the first milling cylinder 65 containing a transport spiral (not shown), and temporarily stored in the Glen tank 30. Is done. On the shaft center in the longitudinal direction of the first cereal cylinder 65, the straw outlet of the Glen tank 30 is provided. The air blown from the tang 79 is split up and down by the wind rate 92, blows the swarf above the first spiral 65a to the rear, and swarf to the grain conveyed to the grain tank 30 through the first cereal cylinder 65. Reduce contamination.

  The remaining threshed culms that have reached the end of the handling chamber 66 of the threshing device 15 and are long are sandwiched between the culling chain 80 (FIG. 4) and the culling head lug (not shown). It is transported, put into a straw cutter 96 at the rear of the threshing device 15, cut, and released to the field.

  A grain tank helix (not shown) for transferring grains is provided at the bottom of the glen tank 30, and a discharge auger comprising a vertical auger 18 and a horizontal auger 19 is provided on a helical drive shaft (not shown) for driving the glen tank helix. The grains that are connected and stored in the Glen tank 30 are discharged to the outside of the combine 1 through the discharge auger discharge port 19a. The Glen tank spiral, vertical auger spiral (not shown), and horizontal auger spiral (not shown) are rotationally driven in response to the power of the engine and convey the stored grains by the screw conveyor action of the respective spiral blades. .

  The grain husks harvested by the reaping device 6 are adjusted in the handling depth by the cereal conveyance and adjusting device attached to the reaping device 6 and inserted into the handling chamber 66 which is the main threshing portion of the threshing device 15. A handling drum 69 pivoted on the handling chamber 66 has a large number of teeth 69a on its surface. Then, the power from the engine is transmitted to rotate in the direction of arrow B in FIGS. 4 and 5 by the drive mechanism.

  Grains with grains inserted in the handling chamber 66 are transferred in the direction of arrow A in FIG. 4 by the moving feed chain 14, while the handling teeth 69 a and the handling net 74 of the handling drum 69 rotate in the direction of arrow B. Is threshed by the interaction. The end of the handling net 74 (FIG. 3) in the conveying direction is supported by the intermediate plate 106. Then, the object to be processed (grains and sawdust) separated from the cereal passes through the handling net 74 in the direction of arrow C1 (FIG. 5) and is received by the swing shelf 51 of the sorting unit 50.

  The swing shelf 51 is arranged at the rearmost end of the transfer shelf 52 arranged below the handling net 74 of the handling chamber 66, the first sheave 55, chaff sheaves 53, 54 arranged behind it, and the sorting net 63 below it. The Strollac 62 is made up of.

  The first sheave 55 and the chaff sheaves 53 and 54 are common in that the object to be processed is leaked from between the sheaves while swinging, and the wind is selected by blowing air from the tang 79, but in the forward direction of the object to be processed. The first sheave 55 on the side is smaller in size than the chaff sheaves 53 and 54 on the rear side, and the distance between the sheaves is somewhat narrow. On the front side in the transport direction of the workpiece, the single grain content in the workpiece is high, so that only the single grain is leaked while suppressing the leakage of the sawdust, and the sawdust is transferred to the rear. Such a configuration is adopted.

Further, a guide 88 for diffusing the workpiece on the swing shelf 51 is disposed above the first sheave 55 so that the front end of the guide 88 is located above the transfer shelf 52 in the conveyance direction of the workpiece. Provided.
The transfer shelf 52 includes a plurality of rack-shaped sorting plates 52 a, and the transfer shelf 52 is disposed in front of the first sheave 55. The transfer shelf 52 is arranged below the handling cylinder 69 so as to receive the second processed material.

  The grain that has been threshed in the early stage of threshing that leaks in the area in front of the handling net 74 (FIG. 3) is a single grain and does not contain impurities, so there is no need to roughly sort on the chaff sheaves 53, 54, and the direct sorting net In 63, wind can be selected by blowing air from a tang 79, which will be described later, and the load of these chaff sheaves 53, 54 is reduced, and efficient threshing becomes possible.

  Further, since the swing shelf 51 swings in the up / down and front / rear direction by the operation of the swing shelf drive mechanism (not shown), the object to be processed moves on the swing shelf 51 while moving in the arrow D direction (FIG. 3). Grains having a high specific gravity that have leaked through the screen pass through the sorting net 63, are accumulated on the first shelf 64, and are conveyed from the first spiral 65 a to the grain tank 30 via the first lifting cylinder 65. The grains stored in the Glen tank 30 are conveyed to the outside of the combine 1 via the augers 18 and 19.

  Among the objects to be processed on the swing shelf 51, lightweight ones are blown off by the swing action of the swing shelf 51 and the air blown by the fan 79 a of the Karatsu 79, and the first sheave 55 and the chaff sheaves 53 and 54 are swung from the swing shelf 51. Moving in the direction of arrow D, the second small grain on Strollac 62 leaks in the direction of arrow G and is collected on second shelf 85, and second lifted by second spiral 86 It is conveyed to the grain cylinder 87.

The second kernel (sometimes called the second product) is a mixture of normal kernels, branch boughs, sawdust and scorpion grains with normal kernels in the waste. The inside of the whipping cylinder 87 is pumped up by a second whipping cylinder spiral (not shown), and discharged from the second processing chamber entrance to the second processing chamber 67. The second processing cylinder 70 pivoted at the lower portion of the second processing chamber 67 transmits power from the engine and rotates in the direction of arrow J in FIG. 4 by the drive mechanism. The second kernel is separated from the second kernel while branching in the direction of arrow I (FIGS. 3 and 4) while colliding with a number of processing teeth 70a planted in the second processing cylinder 70. The part of the object to be processed passes through the receiving net 75 provided below the second processing cylinder 70 and leaks to the sorting unit 50, and most of the object to be processed is transferred to the transfer shelf 52. Are sent in the direction of the first sheave 55 and the chaff sheaves 53 and 54, and the grain passes through the first sheave 55, the chaff sheaves 53 and 54, and the sorting net 63, and is first collected in the spiral 65a.
In this way, the second product is collected on the transfer shelf 52 and reprocessed by the first sheave 55 and the chaff sheaves 53 and 54, so that the separation between the grain and the waste is improved.

  On the other hand, the remaining threshed cocoon that has reached the end of the handling chamber 66 of the threshing device 15 is held between the culling chain 80 (FIG. 4) and the culling head chain (not shown). Then, it is transported, put into the waste disposal chamber 95 at the rear of the threshing device 15 and released to the field.

  In addition, among the objects to be processed that have reached the end of the object to be processed conveyance direction of the processing chamber 66, short objects such as sawdust are thrown in the direction of arrow A2 (FIG. 4) from the communication port 68a of the dust removal processing chamber 68. Then, it enters the dust disposal chamber 68 and is processed while being conveyed in the direction of arrow K (FIGS. 3 and 4) by the processing teeth (spiral) 71a of the rotating dust disposal cylinder 71 in the dust disposal chamber 68.

Leakage (grains) in the processing object mainly composed of sawdust containing a small amount of grain entering the dust disposal chamber 68 leaks from the receiving net 76 (FIG. 3) onto the swing shelf 51. Then, it is guided to the Strollac 62 and sent from the second shelf 85 to the second processing chamber 67 via the second lifting cylinder 87.
The second processing cylinder 70 and the dust removal processing cylinder 71 on the same axis are driven by a driving force from the engine via a pulley.

  As shown in FIG. 3, a cross flow fan 91 is provided at the rear of the threshing device 15, and among dusts generated in the threshing device 15 including the dust removal processing chamber 68, swarf, branching bellows and dust having a low specific gravity are removed. The contained air is sucked by blowing air by rotation of the cross flow fan 91, blown out in the direction of arrow L from the outlet of the cross flow fan, and discharged to the outside of the combine 1.

  Of the dust that has fallen from the dust removal processing chamber 68 to the end of the swing shelf 51 as indicated by an arrow M (FIG. 3), those having a small diameter and a high specific gravity, such as second and third grains, The Strollac 62 at the end of 51 or the first sheave 55 and the chaff sheaves 53 and 54 are passed through in the direction of arrow G, leaked to the second shelf 85, and processed again in the second processing chamber 67.

  Of the dust that has fallen from the dust removal processing chamber 68 to the end of the swing shelf 51 as indicated by the arrow M, slightly longer scrap is received by the Strollac 62, and the swing motion of the swing shelf 51, As shown by the arrow F, it is discharged from the back of the swing shelf 51 by the air blowing force of the red pepper 79 and released to the field.

FIG. 8 shows a lower enlarged view of the threshing apparatus of FIG. 3, and FIG. 9 shows a plan view of the vicinity of the sorting unit 50 of the threshing apparatus of FIG.
As shown in FIGS. 3 and 8, the chaff sheaves 53 and 54 are composed of a first chaff sheave 53 on the front side and a second chaff sheave 54 on the rear side, and these chaff sheaves 53 and 54 climb in the transfer direction of the workpiece. It comprises a plurality of sheaves 53a, 53b, 53c... 54a, 54b, 54c. And according to this embodiment, lower end part connection line A1, B1 which connected the lower end part of each sheave 53a, 53b, 53c ..., 54a, 54b, 54c ... of these chaff sheaves 53, 54 is mountain-like in side view. The sheaves 53a, 53b, 53c,..., 54a, 54b, 54c,. According to the present embodiment, the sheaves 53a, 53b, 53c..., 54a, 54b, 54c... Are arranged so that the lower end connection lines A1 and B1 of the sheaves have an inverted V shape. Alternatively, they may be arranged in a mountain shape having a plurality of vertices.

  FIG. 8 shows an imaginary line A1 connecting the lower ends of the sheaves of the first chaff sheave 53 on the front side and an imaginary line B1 connecting the lower ends of the sheaves of the second chaff sheave 54 on the rear side. In addition, the first chaff sheave 53 and the second chaff sheave 54 are arranged in an inverted V shape in a side view, with the inclination angle of the virtual line A1 and the virtual line B1 different from each other at the bending point C1.

  By adopting this configuration, the chaff sheaves 53 and 54 have a larger distance from the sorting screen 63 below due to the V-shaped space portion than when the sheaves are horizontally arranged in a straight line at the same position, and swing. Separation of dust and grains such as dust by floating selection by movement is good.

  Further, since the lower end connecting line of the first chaff sheave 53 and the second chaff sheave 54 has an inverted V shape, a V-shaped opening (space portion) is formed between the chaff sheaves 53 and 54 and the sorting net 63. Since the space between the chaff sheaves 53 and 54 and the sorting net 63 is widened, the sorting wind from the tang 79 does not accumulate between the chaff sheaves 53 and 54 and the sorting net 63, and the omission of the sorting wind is improved. Is good.

  And by arranging the chaff sheaves 53 and 54 in this way, when arranging the same number of sheaves, the sheaves 53a, 53b, 53c..., 54a, 54b, 54c. , 54 need not be lengthened in the front-rear direction, so that the length of the sorting portion 50 in the longitudinal direction is not increased, and the entire combine can be made compact.

  When the sheaves 53a, 53b, 53c,... Are arranged so that the upper end connection line A2 connecting the upper ends of the first chaff sheaves 53 on the front side is inclined upward in a side view, the amount of workpieces is large. The space between the upper end of the sheaves 53a, 53b... Therefore, the space between the middle plate 106 and the rear plate 108 shown in FIG. 3 and the first chaff sheave 53 is widened, and the passage of the object to be processed is enlarged, so that the grain sorting efficiency is improved.

  Further, as shown in FIG. 8, upper end connection lines A2 and B2 connecting the upper ends of the plurality of sheaves 53a, 53b, 53c of the first chaff sheave 53 and the plurality of sheaves 54a, 54b, 54c of the second chaff sheave 54, In the side view, the apex (bending point C2) has one mountain shape, and the inclination angle of the upper end connection line B2 of the second chaff sheave 54 with respect to the horizontal plane is inclined with respect to the horizontal plane of the upper end connection line A2 of the first chaff sheave 53. You may arrange | position the 1st chaff sheave 53 and the 2nd chaff sheave 54 so that it may become smaller than an angle.

  That is, the rearward downward inclination angle of the virtual line B2 of the second chaff sheave 54 is made smaller than the backward upward inclination angle of the virtual line A2 of the first chaff sheave 53 on the front side, so that the virtual line B2 is gentler than the virtual line A2. The sheaves 53a, 53b, 53c,... Of the first chaff sheave 53 and the sheaves 54a, 54b, 54c,. The virtual line B2 of the second chaff sheave 54 may be substantially horizontal as shown in FIG.

  By adopting this configuration, the inclination angle of the upper end connection line A2 of the first chaff sheave 53 with respect to the horizontal plane is larger than the inclination angle of the upper end connection line B2 of the second chaff sheave 54 with respect to the horizontal plane. Since it does not flow easily backward, filtration of the object to be processed in the first chaff sheave 53 is promoted. And the inclination angle with respect to the horizontal plane of the upper end connection line B2 of each sheave 54a, 54b, 54c ... of the second chaff sheave 54 on the rear side is gentler than the inclination angle with respect to the horizontal plane of the upper end connection line A2 of the first chaff sheave 53. Therefore, the second chaff sheave 54 does not filter a large amount of the processed material that has been processed by the first chaff sheave 53 and has a reduced grain ratio, so that the second shelf plate can be easily removed from the rear. Therefore, it is possible to prevent deterioration in sorting and increase in the second reduction amount.

  Further, the sheaves 54a, 54b of the second chaff sheave 54 on the rear side of the pitch P between the sheaves 53a, 53b, 53c... Of the first chaff sheave 53 on the front side (the pitch between sheaves on the virtual line A2 (A1)). , 54c... May be increased (pitch between sheaves on virtual line B2 (B1)).

  Since the pitch P between the sheaves 53a, 53b, 53c... Of the first chaff sheave 53 on the front side is small, grains that have not been made into single grains such as branch branches, keys, or the like are caught by the sheave and are not easily filtered. Further, by increasing the pitch Q between the sheaves of the second chaff sheave 54 on the rear side, the draft of the sorting air blown from the tang 79 is improved.

  When the rotation connecting plate 57 is attached to the first chaff sheave 53 on the front side so that the sheaves 53a, 53b, 53c,... Of the first chaff sheave 53 can rotate and interlock, the amount of filtration of the first chaff sheave 53 can be freely set. Can change.

As shown in FIG. 6, the upper ends of the sheaves 53a, 53b, 53c,... Are pivotally connected to a rotary connecting plate 57 by a shaft 57b such as a rod, and the lower ends of the sheaves 53a, 53b, 53c,. The sheaves 53a, 53b, 53b, 53b, 53c are engaged with the elongated holes 57a of the rotating connecting plate 57, and the shafts 57b, which are connecting portions between the upper ends of the sheaves 53a, 53b, 53c. The lower end of 53c ... is configured to rotate in the direction of arrow Y within the elongated hole 57a.
The rotation connecting plate 57 is attached to the left and right side walls 51 a and 51 b of the swing shelf 51 by a support member 56 and operates in conjunction with the swing motion of the swing shelf 51.

  Also, the size of the pitch R between the sheaves on the rear portion of the first chaff sheave 53 on the virtual line A1 (A2) is made substantially the same as the size of the pitch Q between the sheaves on the virtual line B1 (B2) of the second chaff sheave 54. May be.

  As shown in FIG. 6, the first chaff sheave 53 on the front side is configured so that the sheaves 53 a, 53 b, 53 c... By increasing the size of the pitch R between the sheaves of the section, it is possible to increase the amount of filtration of the portion where the specific gravity sorting and the air blowing sorting of the object to be processed are relatively performed in the upper part of the first shelf plate 64. . In addition, the airflow of the sorting air blown from the tang 79 is improved.

  Then, the position of the bending point C1, which is the junction of the lower end virtual line A1 of the first chaff sheave 53 on the front side and the lower end virtual line B1 of the second chaff sheave 54 on the rear side, is determined as the terminal end (rear end) of the sorting net 63. Near the upper end of the shelf 64 and the upper end of the shelf plate 64 (the rear end).

  By aligning the front and rear positions of the end portion of the sorting net 63 and the end portion of the first chaff sheave 53, a necessary amount of sorting space above the sorting net 63 can be secured. That is, even if the terminal portion of the sorting net 63 is extended to the lower side of the second chaff sheave 54, the virtual line B1 of the second chaff sheave 54 is inclined backward and downward, so that the sorting space above the sorting net 63 cannot be secured.

  Further, the sheaves are arranged so that the lower end connecting lines A1 and B1 of the first chaff sheave 53 on the front side and the second chaff sheave 54 on the rear side are in an inverted V shape in a side view, and the sorting net 63 Is disposed below the first chaff sheave 53 where the imaginary line A1 is inclined upward and backward, a sufficient sorting space (the space between the sorting net 63 and the first chaff sheave 53) can be secured. The height does not need to be so high, and the overall height of the sorting unit 50 can be kept low. Therefore, the whole threshing device has a compact configuration.

  In addition, the sorting net 63 may be installed above the lower ends of the left and right side walls 51a and 51b of the swing shelf 51. As shown in FIGS. 6 and 8, in the sorting unit 50, the left and right side walls 51 a and 51 b of the swing shelf 51 are extended below the sorting net 63 below the chaff sheaves 53 and 54 to provide a height difference H.

  By extending the swing shelf side walls 51a and 51b downward from the sorting net 63, the sorting wind from the Karatsu 79 converges on the extending portion. Therefore, since the sorting wind can be converged and supplied also to the sorting net 63 on the side of the sorting section 50 where the volume of the sorting wind from the tang 79 is small, the grain sorting is good. Moreover, when the grain filtered from the sorting net 63 is scattered on the swing shelf side walls 51a and 51b side and there is an opening leading to the outside on the side of the sorting unit 50, it is prevented from jumping out and becoming a recovery loss. it can.

FIG. 10 shows a partially cutaway side cross-sectional view of the lower part of the combine threshing apparatus according to another embodiment of the present invention, FIG. 11 shows an enlarged view of the vicinity of the sorting unit 50 of FIG. 10, and FIG. Is an enlarged view of the vicinity of the stroller 62 in FIG. 10, and FIG. 13 is a plan view of the vicinity of the stroller 62 in FIG.
According to the present embodiment, the fins 62ba of the Strollac 62 provided on the swing shelf 51 are configured to rotate back and forth. The Strollac 62 includes a first fin 62a provided below the communication port 68a and a second fin 62b provided behind the first fin 62a. The second fin 62b is fixed to a rotating fin 62ba that rotates back and forth. It is the structure which consists of fin 62bb.

As shown in FIG. 13, the rotating fins 62ba and the fixed fins 62bb of the second fins 62b are alternately provided in the left-right direction, and the front portions of the first fins 62a are fixed on the rack support member 61, and the second fins 62b The front part of the fixed fin 62bb of the fin 62b is fixed to the rear end upper part of the rack support member 61.
Note that a fixed fin 62bb of the same shape is provided at the same position behind the rotating fin 62ba shown in FIGS.

  The front portions of all the fixed fins 62bb are locked to the shafts 97 and 98, and one end portions (lower portions) of the links 101 and 102 are rotatably connected to the shafts 97 and 98. The connecting rods 99 and 100 are engaged with the other ends (upper portions) of the links 101 and 102, and the connecting rods 99 and 100 are welded and fixed to the upper portion of the rotating fin 62ba.

  The fixed fin 62bb is fixed to the swing shelf 51 by the rack support member 61, but the rotation fin 62ba is swingably attached by the links 101 and 102, and the swing shelf 51 swings. On the other hand, since the rotation fin 62ba tries to maintain the position by its inertia, the upper portions of the links 101, 102 rotate in the direction of arrow T around the fulcrum shafts 97, 98, and the upper portions of the connection rods 99, 100 Rotating fins 62ba to which are fixed together rotate in the direction of arrow U.

  By adopting this configuration, the turning fins 62ba of the second fins 62b of the Strollac 62 turn up and down and up and down, so that the separation of the waste and the soot becomes good, and the recovery loss can be reduced.

Thus, the rotation fins 62ba of the second fins 62b move back and forth along the arc trajectory above the fulcrum shafts 97 and 98. That is, the rotation fin 62ba is configured to rotate so as to form an arc locus above the fixed position.
Therefore, the rotation fin 62ba rotates upward so as to form an arc locus, so that the separation of the grain from the workpiece can be promoted by the vertical movement.

Further, when the rotation fin 62ba is in the front position, the rear end portion of the first fin 62a disposed in front of the second fin 62b may overlap the front end portion of the rotation fin 62ba in a side view.
As shown in FIG. 12, by providing an overlapping portion V between the first fin 62a and the rotating fin 62ba, when the rotating fin 62ba is at the front position (broken line position), the upper step of the feed of the first fin 62a Since the overlapping portion V exists between the step and the upper surface step portion of the rotating fin 62ba, the transfer (passing) of the object to be transferred is smoothed.

Therefore, since the rear end portion of the first fin 62a and the front portion of the rotating fin 62ba overlap with each other in a side view, the object to be processed is not collected between the first fin 62a and the rotating fin 62ba, and is smoothly taken over. Transported.
In this way, the turning fins 62ba make it possible to hook the sawdust by a swinging motion from the lower side to the upper side and send it back.

And it is good also as a structure to which the connected rotation fin 62ba moves in parallel with respect to fixed fin 62bb. That is, the rotating fins 62ba may be integrally connected so as to be parallel to the fixed fins 62bb.
Since the rotating fin 62ba rotates and moves in parallel with the fixed fin 62bb, the object to be processed can be transferred straight back. Therefore, it becomes possible to promote the backward feeding of the workpiece by smooth transfer.

Further, the rotation fins 62ba are not connected to each other, and may be configured to move individually. The connecting rods 99 and 100 shown in FIG. 12 are divided into a large number in the length direction, links 101 and 102 are provided for the respective rotating fins 62ba, and the connecting rods 99 obtained by dividing the rotating fins 62ba and the links 101 and 102 are provided. , 100, respectively.
It is possible to make irregular movements by not connecting the rotating fins 62ba integrally. For example, if the position and power to move in a place where there are many objects to be processed and a place where there are few things are changed, the grain is more efficiently Separation is promoted.

  The connecting rods 99 and 100 are arranged in a lattice shape, and the ridges are dropped onto the lower chaff sheaves 53 and 54 from the lattice gap. By arranging the connecting rods 99 and 100 in a lattice shape to fill the gaps between the fins 62a and 62b of the Strollac 62, not only the function of connecting the rotating fins 62ba but also the role of the lattice for selecting the grains. In addition, the sorting efficiency is improved by dropping the straw from the gaps of the lattice onto the sheave.

FIG. 14 shows a side view of the vicinity of the sorting unit 50 of the combine threshing apparatus according to another embodiment of the present invention, and FIG. 15 shows an enlarged view of the vicinity of the stroller 62 of FIG.
The integrally connected rotation fin 62ba may be configured such that the rear part moves up and down with the front shafts 97 and 98 as fulcrums. Similar to FIGS. 10 to 12, a fixed fin 62bb of the same shape is provided at the same position on the back of the rotating fin 62ba. And the connecting rods 99 and 100 are welded to the upper part of the rotation fin 62ba. 10 to 12, the connecting rods 99 and 100 are connected to the upper portions of the links 101 and 102. However, according to the present embodiment, the connecting portion of the rear link 102 with the connecting rod 100 is the long hole 102a. By doing so, the connecting rod 100 moves in the elongated hole 102a of the link 102, and the rotating fin 62ba moves up and down also in the direction of the arrow W.

  By adopting this configuration, in addition to the back-and-forth movement of the rotating fin 62ba (in the direction of the arrow U), the back of the rotating fin 62ba moves up and down (in the direction of the arrow W), and further the grain from the workpiece. Can be separated.

When the rotating fin 62ba moves forward, the connecting rods 99 and 100 come into contact with the upper rear end of the fixed fin 62a from above. Then, the connecting rod 100 on the rear side moves in the elongated hole 102a. Since the movement of the connecting rod 100 is restricted by the elongated hole 102a, the upward movement of the rotating fin 62ba is also restricted. As described above, the connecting rods 99 and 100 of the rotating fin 62ba may be configured as a stopper.
Thereby, it is possible to prevent the turning fins 62ba from moving more than necessary, and to prevent the turning fins 62ba from coming off or jumping out.

The threshing apparatus of the present invention can be used in a harvested grain processing apparatus such as a combine.

It is a left view of the combine which performs the harvesting operation | work of the grain of one embodiment of this invention. It is a top view of the combine of FIG. It is a partially cutaway side sectional view of the combine threshing apparatus of FIG. It is a SS line arrow line view of the threshing apparatus of the combine of FIG. It is AA arrow sectional drawing of the threshing apparatus of the combine of FIG. It is a BB arrow directional cross-sectional view of the combine threshing apparatus of FIG. It is CC sectional view taken on the line of the threshing apparatus of the combine of FIG. It is a lower enlarged view of the threshing apparatus of FIG. It is a top view of the selection part vicinity of the threshing apparatus of FIG. It is a partially cutaway side sectional view of the lower part of the threshing device for a combine according to another embodiment of the present invention. FIG. 11 is an enlarged view of the vicinity of the selection unit in FIG. 10. FIG. 11 is an enlarged view of the vicinity of the Strollac in FIG. 10. FIG. 11 is a plan view of the vicinity of the Strollac in FIG. 10. It is a side view of the selection part vicinity of the combine threshing apparatus by other embodiment of this invention. FIG. 15 is an enlarged view of the vicinity of the stroller of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Combine 2 Traveling frame 3 Traveling device 4 Crawler 6 Cutting device 7 Weeding device 8 Grain raising device 9 Conveying device 14 Feed chain 15 Threshing device 18 Vertical auger 19 Horizontal auger 19a Auger outlet 20 Pilot seat 30 Glen tank 50 Sorting Part 51 Oscillating shelf 51a, 51b Side wall 52 Transfer shelf 52a Sorting plate 53 1st chaff sheave 54 2nd chaff sheave 55 First sheave 56 Support member 57 Rotating connecting plate 57a Long hole 57b Shaft 61 Rack support member 62 Strolack 62a 1st fin 62b Second fin 62ba Rotating fin 62bb Fixed fin 63 Sorting net 64 First shelf board 65 First cereal cylinder 65a First spiral 66 Handling chamber 67 Second processing chamber 68 Dust processing chamber
68a Dust removal processing chamber communication port 69 Handling cylinder 69a Teeth 70 No. 2 treatment cylinder 70a Treatment tooth 71 Dust removal treatment cylinder 71a Treatment tooth (spiral) 74 Handling net 75 No. 2 treatment cylinder receiving net 76 Receptacle net 79 Kara 79a Kara fan 79b Karatsu Shaft 80 Waste Chain 85 Second Shelf 86 Second Spiral 87 Second Flour Cylinder 88 Guide 91 Cross Flow Fan 92 Wind Division 95 Waste Disposal Chamber 96 Cutter 97, 98 Supporting Shaft 99, 100 Connecting Rod 101,102 Link 102a Slot 106 Middle plate 107 Front plate 108 Rear plate

Claims (3)

A handling chamber (66) provided with a handling cylinder (69) provided with a tooth handling (69a) for separating the grain from the cereal cocoon, and provided below the handling chamber (66), the handling chamber (66 The chaff sheave (53, 54) for transferring the object to be treated leaked from the waste gas to the rear while selecting the wind force, and a sorting net provided under the chaff sheave (53, 54) for selecting the grain from the object to be treated In the threshing apparatus provided with the sorting unit (50) provided with (63),
The chaff sheave (53, 54) is composed of a plurality of sheaves (53a, 53b, 53c..., 54a, 54b, 54c...) Arranged in the transfer direction of the workpiece, and the plurality of sheaves (53a, 53b,. 53c... 54a, 54b, 54c... Are provided so that the lower end connecting line connecting the lower ends of the sheaves (53a, 53b, 53c... 54a, 54b, 54c. Threshing apparatus characterized by the above.   A plurality of sheaves (53a, 53b, 53c ..., 54a, 54b, 54c ...) of the chaff sheave (53, 54) connect the upper ends of the sheaves (53a, 53b, 53c ..., 54a, 54b, 54c ...). The threshing apparatus according to claim 1, wherein a front side of the upper end connecting line is provided so as to be inclined upward in a side view. The upper end connecting line connecting the upper ends of the plurality of sheaves (53a, 53b, 53c..., 54a, 54b, 54c...) Of the chaff sheave (53, 54) has a mountain shape with one apex in side view.
The chaff sheave (53, 54) is formed of a first chaff sheave (53) on the front side and a second chaff sheave (54) on the rear side of the apex portion of the upper end connecting line,
The inclination angle with respect to the horizontal plane of the upper end connection line of the second chaff sheave (54) is set smaller than the inclination angle with respect to the horizontal plane of the upper end connection line of the first chaff sheave (53). Threshing device.

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