JP4935601B2 - Threshing device - Google Patents

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 cereals passes through the handling net and is received by the swing shelf in the sorting room to separate the second cereals and swarf, etc. Transport to tank. The second kernel is sent to the second processing chamber and separated by the second processing cylinder into grains, branch rafts, etc., and falls again on the swing shelf and separated into grains, second kernels, sawdust, etc. The Short items such as sawdust generated in the handling chamber are transported to the dust disposal chamber and processed by the dust disposal cylinder.

The above threshing work by the threshing device mounted on the combine etc. is labor-saving and efficient. In addition to the handling room of the threshing device, a second treatment room, a dust removal treatment room, etc. are provided to improve the efficiency of threshing and grain. High efficiency of grain recovery is achieved. And the structure which prevents the to-be-processed object in a handling chamber from flowing into the outer side of a handling chamber, or a to-be-processed object being easily transferred to the conveyance direction lower side in a handling cylinder, and improves the collection efficiency of a grain. It has been proposed (Patent Document 1 below). Moreover, the structure which aims at the recovery loss of the 4th grain by removing the scorpion grain which has been threshed and is exhausted by the waste discharged | emitted outside the combine is proposed (patent document 2 below).
JP 2007-104956 A JP 2006-67814 A

  According to the configuration described in Patent Document 1, a guide body that guides an object to be processed toward the inside of the handling chamber between the resistance plate disposed on the feed chain side in the handling chamber and the handling cylinder, or between the guide body and the handling cylinder. A partition plate that provides resistance to the conveyance of the workpiece is provided. The communication port from the handling chamber to the dust disposal chamber is provided with a reverse lead plate that sends the workpiece to the upper side in the transport direction of the barrel, so that it can be easily guided to the dust disposal chamber. The structure which returns a thing to the conveyance direction upper direction side of a to-be-processed object is disclosed.

  Further, according to the configuration described in the above-mentioned Patent Document 2, a small grain dropping chamber is provided behind the transfer terminal end of the handling chamber, and the entire width of the small grain dropping chamber and the handling chamber is larger than the outer diameter of the handling cylinder. A configuration that reliably removes small grains is disclosed.

  Further, a guide member is provided between the rear plate and the middle rear plate along the rotation outer periphery of the tooth handling of the barrel, and the outer side surface of the middle and rear plates of the handling chamber has a U-shape (L-shape) in plan view. A configuration in which the tip support guide is provided to be inclined upward toward the left outer side in a side view is disclosed.

According to the inventions described in Patent Document 1 and Patent Document 2 described above, the grain is recovered from the small grains and the loss of the fourth grain is reduced. However, the loss reduction rate of the fourth grain is further improved. It has been demanded.
In addition, when the amount of processed material increases, the communication port is filled with this processed material, resulting in an overload condition, generation of abnormal noise in the handling chamber, clogging of the processed material at the communication port, Problems such as the loss of horsepower of the prime mover driving the threshing device arise.

  The subject of this invention is providing the threshing apparatus which can aim at the loss reduction of the 4th grain of a 1st grain, without restrict | limiting the flow to the dust treatment chamber of a to-be-processed object.

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) having a tooth handling (69a) for separating the grain from the cereal is pivoted, and a covering of the handling cylinder (69). Generated in the collection chamber (66a) in which the collection cylinder (69b) that collects a part of the object to be processed is disposed on the end side in the conveyance direction of the workpiece, and the collection cylinder (69b) is pivotally mounted in the handling chamber (66). The handling net (74) for filtering the treated object and the dust removal treating cylinder (71) for taking over and treating the treated object that has reached the end of the conveying cylinder (69) in the conveying direction (66) Dust disposal chamber (68) provided on the side of the rear part, and the end of the workpiece in the conveyance direction by the handling cylinder (69) of the handling chamber (66) and the dust collection chamber (68). A communication port (101) that communicates with the start end of the workpiece in the conveyance direction by the processing cylinder (71), and an axial center of the handling cylinder (69) that is provided near the communication port (101). It has a flat portion in a direction perpendicular to it, has a non-uniform gap in the circumferential direction between the treatment cylinder (69) provided on the inner wall surface of the ceiling portion of the treatment chamber (66), and the communication port (101). It is a threshing device provided with an upper partition plate (83) provided with a dust feeding space (b) through which the workpiece to be carried around by rotation of the handling cylinder (69) passes at the upper position.

  According to the first aspect of the present invention, the gap formed between the partition plate 83 and the handling cylinder 69 is made uneven in the circumferential direction of the handling cylinder 69, and the communication port 101 (see FIG. 4) Since a dust-feeding space (b) for passing the object to be carried around by rotation of the handling cylinder 69 to the rear side is provided at a position above 4), a collection chamber for collecting the small grains on the rear side of the handling chamber 66 66a separates and collects the grains that are trapped in the waste after threshing, can increase the effect of reducing the fourth loss, can be highly efficient threshing work even with a small threshing device, Even if the material to be treated is a wet material with a lot of moisture, while suppressing the fourth loss, it is difficult for the cocoon to penetrate into the grain on the side of the stock with a relatively large amount of cocoons, and highly efficient threshing work Yes.

  Even if the amount of the object to be processed in the chamber 66 increases, the amount of the object to be processed at the communication port 101 is reduced by passing the object to be processed from the dust feeding space (b) to the rear side, and the chamber 66 It is possible to improve the efficiency of the threshing work by reducing the generation of abnormal noise in the interior, the occurrence of clogging of the object to be processed at the communication port 101, and the horsepower loss of the prime mover that drives the threshing device.

  FIG. 1 is a left side view of a combine that performs a grain harvesting operation according to an embodiment of the present invention, FIG. 2 is a plan view of the combine, and FIG. 3 is a partially cutaway side cross-sectional view of a combine threshing apparatus. The figure is shown. 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 a front conveyance device, a treatment depth adjusting device, and a supply conveyance device (not shown) is successively transferred and handled in the cereal. It is arranged so that it can be adjusted.

  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 backwards. 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. The threshing device 15 is provided with a handling chamber 66 having a handling cylinder 69 pivoted on the upper side between a front plate 97 and a rear plate 98, and a sorting unit 50 provided integrally below the handling chamber 66. Thresh and sort the harvested cereal meal.

  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 to the wind, the wind is selected by receiving air from the tang 79, and the grains with heavy specific gravity pass through the sheaves 53 and 54 and the selection net 63, and from the first spiral 65, It is conveyed to the Glen tank 30 via the first cereal cylinder 78 (FIG. 6) incorporating the conveying spiral 78a, and is temporarily stored in the Glen tank 30. On the shaft axis in the longitudinal direction of the first cereal cylinder 78, the straw discharge port of the Glen tank 30 is provided. In addition, a wind inlet 80 (FIG. 8) for taking in wind to the tang 79 is provided on the side wall of the threshing device 15.

  The remaining threshed culm that has reached the end of the handling chamber 66 of the threshing device 15 and is kept in a long length is sandwiched and transported between a culling chain and a culling head chain (not shown), and the rear part of the threshing device 15 It is thrown into the paddle cutter and 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 from the discharge auger discharge port. 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 each spiral blade. .

  FIG. 4 shows a plan view of the vicinity of the handling drum 69 of the combine threshing device 15 of FIG. Further, FIG. 5 shows an elevational cross-sectional view of the threshing device 15 as viewed from the line AA in FIG. 3, and FIG. 6 shows an elevational sectional view of the threshing device 15 as viewed from the line BB in FIG. FIG. 7 shows an elevational sectional view of the threshing device 15 as viewed in the direction of arrows CC in FIG.

  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 in the handling chamber 66 has a large number of teeth 69a on its surface, and is rotated in the direction of arrow B in FIGS. To do. 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, and the teeth 69 a and the handling net 74 of the handling drum 69 that rotate in the direction of arrow B are rotated. Is threshed by the interaction. Further, the lower part of the handling net 74 on the feed chain 14 side is supported by a net presser 77 from the front plate 97 to the rear middle plate 96R. The object to be processed (grains and wastes) separated from the cereals passes through the handle net 74 in the direction of arrow C1 (FIG. 5) and is received by the swing shelf 51.

  The swing shelf 51 includes a transfer shelf 52 arranged below the handling net 74 of the handling chamber 66, an upper first chaff sheave 53 and a second chaff sheave 54 arranged behind it, and a sorting net 63 below and a rearmost end. It is comprised from the stroller 62 etc. which were arrange | positioned.

  The first chaff sheave 53 and the second chaff sheave 54 are common in that the workpiece is leaked from between the sheaves while swinging and the wind is selected by blowing air from the tang 79, but the conveying direction of the workpiece The first chaff sheave 53 on the front side is smaller in size than the second chaff sheave 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 diffusion guide 88 for diffusing an object to be processed on the swing shelf 51 is positioned above the first chaff sheave 53, and a front end of the diffusion guide 88 is positioned above the transfer shelf 52 in the conveyance direction of the object to be processed. It is provided to do.
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 chaff sheave 53. The transfer shelf 52 is arranged below the handling cylinder 69 and can receive the second processed material.

  The grain shed 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 it is necessary to roughly sort on the first chaff sheave 53 and the second chaff sheave 54. In addition, it is possible to perform wind selection with the direct selection net 63 by blowing air from the tang 79, which will be described later, and the load on the chaff sheaves 53 and 54 is reduced, and efficient threshing becomes possible.

FIG. 9 shows a right side view of the threshing apparatus.
As shown in FIGS. 3, 5, and 9, as a suction port of the tang fan 79 a provided on the side wall of the threshing device, a selection is made adjacent to the large-area first suction port 113 provided around the rotation shaft portion of the tang fan 79 a. A second intake port 114 having a relatively small area is provided between the wind guide plate 116 and the lower surface of the swing shelf 51. The second air inlet 114 corresponds to a blind spot portion of the fan 79a that is out of the air blowing area of the hot air fan 79a. The selected air volume can be increased more than before by the two air inlets 113 and 114. Thus, the selection air volume can be increased without providing a configuration for changing the rotational speed of the tang fan 79a, and the selection can be improved for a large amount of processing. Further, when the second intake port 114 is provided in the blind spot portion of the air flow passage of the tang fan 79a, the intake air from the intake port 114 is promptly guided to the tang fan 79a. Effective in increasing air volume.

  The second air inlet 114 is provided on the left and right side walls facing the sorting unit 50 of the threshing device 15, but the air inlet 114 may have a bell mouth shape (see FIG. 5) protruding outward from the left and right side walls by a length L. . By making the second intake port 114 into the bell mouth shape, the rigidity of the intake port 114 is improved, the intake air intake speed is further improved, and the selected air volume is increased.

  Further, the mounting angle of the Kara fan 79a is set at a forward tilt angle. If the mounting angle θ (FIG. 3) of the tang fan 79a is tilted forward, the selected air volume above the wind guide 117 increases, but if the forward tilt angle θ is large, the air volume below the air guide 117 decreases. However, in the first shelf 64, the removal of impurities may not be sufficient. However, the installation of the second air inlet 114 can increase the air volume, and the air volume of the first shelf 64 can be secured. The upper sorting air volume can be increased.

  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 leaks onto the swing shelf 51 while moving in the arrow D direction (FIG. 3). The lowered specific gravity grain passes through the sorting net 63 in the direction of arrow E, is accumulated on the first shelf 64, and is conveyed from the first spiral 65 to the grain tank 30 via the first lifting cylinder 78 (FIG. 6). Is done. 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 chaff sheave 53 and the second chaff sheave from the swing shelf 51. No. 2 grain which moves in the direction of arrow D toward 54 and leaks in the direction of arrow G on the Strollac 62 and is collected on the second shelf 85, and second in the second spiral 86. It is conveyed to the whipping 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 lifted by the second whipping cylinder helix 87 a and discharged upward from the second processing chamber 67 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 chaff sheave 53 and the second chaff sheave 54, and the grain passes through the first chaff sheave 53, the second chaff sheave 54 and the sorting net 63 and is collected in the first spiral 65.
In this way, the second product is collected on the transfer shelf 52 and reprocessed by the first chaff sheave 53 and the second chaff sheave 54, so that the separation between the grain and the waste is improved.

  The threshing cereals that have been threshed in the object to be processed that have traveled in the direction of arrow A in FIG. 4 and have reached the end of the handling room 66 are in the direction of arrow A1 shown in FIG. It is transported and put into the waste disposal chamber 95.

  In addition, among the objects to be processed that have reached the end of the workpiece conveyance direction by the handling cylinder 69 of the handling chamber 66, short objects such as scraps are conveyed in the conveying direction of the workpiece by the handling cylinder 69 of the handling chamber 66. It is thrown in the direction of the arrow A2 (FIG. 4) from the dust collection chamber inlet 68a in the communication port 101 that communicates the end portion and the start end of the workpiece in the conveyance direction of the workpiece by the dust collection cylinder 71 of the dust collection chamber 68. Then, it enters the dust removal processing chamber 68 by the action of the spiral 71b for improving the intake from the handling chamber 66, and in the dust removal processing chamber 68, the processing teeth 71a of the dust collection processing cylinder 71 which rotates rotates in the direction of arrow K (FIG. 3). Processed while being transported. A spiral 71 b is provided on the upper side of the dust removal processing cylinder 71, and a processing tooth 71 a is provided on the lower side of the dust removal processing cylinder 71. On the side of the handling chamber 66 of the dust disposal cylinder 71, a lattice-like dust disposal cylinder frame 72 (FIG. 8) is provided along the lower side of the dust disposal cylinder 71 and the outer periphery of the handling chamber 66 side. The filter body of the chamber 68 is configured.

  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 provided on the swing shelf 51 and sent from the second shelf board 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 through a pulley by an engine driving force (not shown).

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, 51 passes through the end of the stroller 62 or the sheave 54 in the direction of arrow G, leaks to the second shelf 85, and is again processed in the second processing chamber 67.

Further, as shown in FIG. 8, a front middle plate 96F and a rear middle plate 96R are arranged before and after the communication port 101, and the rear middle portion of the handling net 74 (FIG. 3) is supported by the front middle plate 96F. ing.
A handling cylinder 69 between the rear middle plate 96R and the rear plate 98 on the rear side of the communication port 101 is a fourth collection cylinder 69b (FIG. 4) such as scorpion grains, and the end of the handling chamber 66 in the conveyance direction of the workpiece. A recovery chamber 66 a for recovering the scorpion grains that have reached the section side is provided in the handling chamber 66. In the collection chamber 66a, the rear end portion of the handling cylinder 69 (recovery cylinder) facing the collection chamber 66a with respect to the slaughter tip after the threshing process is performed by the tooth handling 69a provided from the front to the rear of the handling cylinder 69. 69b), the treated teeth 69a act, and the grains stuck into the spear tips can be struck down on the swing shelf 51 and collected.

  As shown in FIGS. 5 to 7, in order to prevent the workpiece from leaking outside the handling chamber 66, the workpiece to be carried from the feed chain 14 into the handling chamber 66 on the side of the handling cylinder 69. A resistance plate 81 attached to the inside of the handling cylinder cover 102 that can be freely opened and closed is provided in the vicinity of the object supply port in parallel with the axial direction of the handling cylinder 69. Further, between the resistance plate 81 and the handling cylinder 69, a stock-side guide body 82 for guiding an object to be processed into the inside of the handling chamber 66 is arranged in parallel with the resistance plate 81.

  Further, as shown in FIG. 4, the stocker side guide body 82 rotates from the starting end portion of the handling cylinder 69 in the conveyance direction of the workpiece to the substantially central portion of the handling cylinder 69 when the handling cylinder 69 rotates as viewed from the conveyance direction. The comb-tooth-shaped portion overlapping with the rotation locus of the tooth handling 69a at the time, and the rear part of the treatment barrel in the conveyance direction from the substantially central portion rearward of the treatment drum 69 to the treatment tooth 69a during rotation of the treatment drum 69 when viewed from the conveyance direction. It has a flat portion that does not overlap with the rotation locus, and the longitudinal direction is provided in parallel with the axis of the handling cylinder 69.

  FIG. 5 shows a state in which the stock-side guide body 82 overlaps with the rotation locus of the handle teeth 69 a from the start end portion of the handle cylinder 69 in the conveyance direction of the workpiece to the rear of the center portion of the handle cylinder 69. FIG. 6 shows a state in which the stock-side guide body 82 does not overlap with the rotation locus of the tooth handling 69 a from the rear of the center portion of the handling drum 69 to the end portion in the conveyance direction of the workpiece. By installing the stocker side guide body 82 inside the resistance plate 81, the workpiece in the handling chamber 66 is guided to the inside of the handling chamber 66 to reduce the grains that are crushed into the stock, and the stockholder side guide By providing the body 82 on the connecting frame 100 in which the front plate 97 and the rear plate 98 are connected, the frame configuration is strengthened and the stocker side guide body 82 is also stably attached.

  Further, an upper partition plate 83 is provided on the inner side of the handling cylinder cover 102 to restrict the conveyance of the object to be processed to the lower side in the conveying direction of the handling cylinder 69. As shown in FIGS. 5 and 6, the upper partition plate 83 has an arcuate lower end portion along the outer periphery of the handling cylinder 69 when viewed from the conveying direction of the workpiece in the handling cylinder 69. It has a plate-like flat portion in a direction orthogonal to the axis, and the upper partition plate 83 overlaps with the rotation locus of the tooth handling 69a when the handling cylinder 69 rotates as seen from the conveying direction of the workpiece in the handling cylinder 69. By providing in, the to-be-processed object can be returned to the conveyance upper side by interaction with the upper partition plate 83 and the tooth-handling 69a.

  Further, when the upper partition plate 83 is provided at substantially the same position in the front-rear direction as the rear middle plate 96R in front of the recovery chamber 66a, the upper partition plate 83 and the rear middle plate 96R provide resistance to the backward flow of the grains. In addition, the recovery of the scorpion grains in the recovery chamber 66a behind the upper partition plate 83 is improved, the filtration of the workpiece in the handling chamber 66 is also promoted, and the recovery loss of the third grain is also reduced.

  The feature of this embodiment is that the gap formed between the upper partition plate 83 and the handling cylinder 69 is not uniform in the circumferential direction of the handling cylinder 69, and the communication port 101 (FIG. 4) between the handling chamber 66 and the dust treatment chamber 68 is provided. A wider dust feeding space (b) was provided on the rear side (tip side) of the object to be carried around than the front side (stock source side).

  The handling cylinder 69 is extended to the rear from the communication port 101, and the object to be processed that moves around the outer circumference of the handling cylinder 69 from the front to the rear in the handling chamber 66 is connected to the communication port 101 and a collection chamber 66a for collecting small grains. The upper partition plate 83 and the rear middle plate 96R at the boundary part of the container are stopped by the rear partition plate recovery chamber 66a on the rear side of the handling chamber 66, and the grains put into the waste after threshing are separated and recovered. Increases the effect of reducing the number loss.

  In this way, even in a small threshing device, high-efficiency threshing work can be performed, and in the overload condition that occurs when the object to be processed is a wet material with a lot of moisture attached, the communication port 101 portion The processed material is easily filled, and it often causes troubles such as generation of abnormal noise, horsepower loss or clogging in the handling chamber 66. However, as described above, there is a gap formed between the upper partition plate 83 and the handling drum 69. By providing a dust-feeding space (b) wider than the front side (stock side) on the rear side (point side) of the workpiece carried around by the handling cylinder 69, while suppressing the fourth loss, With a relatively large number of stockholders, it is difficult for cocoons to penetrate into the grains, and highly efficient threshing work can be performed.

Further, as shown in FIG. 6, the lower surface of the upper partition 83 is a horizontal plane, and the dust sending space (b) becomes smaller as the feed chain 14 is installed. Things are not caught.
As much as possible, the supply amount of the object to be processed from the upper side in the rotational direction of the handling cylinder 69 can be increased, the generation of the small grains is reduced, and the object to be processed around the communication port 101 collides with the upper surface of the handling cylinder 69. Thus, the effect of reducing abnormal noise generated is great. Further, since the lower surface of the upper partition 83 forms a horizontal plane, the object to be processed is not caught on the upper partition 83.

Next, the support structure in the small grain collection chamber 66a will be described.
FIG. 10 shows a plan view of the end portion of the handling chamber 66, the dust disposal chamber 68, the small grain recovery chamber 66a and the waste disposal chamber 95, and FIG. 9 shows a right side view of the threshing apparatus. In the configuration in which the grain recovery chamber 66a is provided behind the communication port 101 from the end portion of the dust removal chamber 68 to the dust removal treatment chamber 68, the first lifting shell cylinder 78 and the waste removal frame 110 that supports the waste treatment chamber 95 are connected. The connecting frame 111 connects and supports the rear middle plate 96 </ b> R and the rear plate 98 that form the communication port 101 from the right side of the handling chamber 66 at the intermediate portion.

  With the above-described configuration, the handling cylinder 69 can be firmly supported by connecting the rear middle plate 96 </ b> R and the rear plate 98 that support the handling cylinder 69 and the waste frame 110 to the first shell cylinder 78. Further, the handling chamber 66, the dust removal processing chamber 68, the small grain recovery chamber 66a, the first shell cylinder 78, and the waste disposal chamber 95 are firmly coupled to each other by connecting to the rear middle plate 96R that forms the communication port 101. it can.

  As shown in FIGS. 9 and 10, the connecting frame 111 that connects the first shell cylinder 78 and the waste frame 110 that supports the waste treatment chamber 95 is positioned above the second shell cylinder 87. The upper portion of the second lifting shell cylinder 87 is behind the first lifting shell cylinder 78 and the front middle plate 96F and the rear middle plate 96R so that the second thing can be reduced in the dust removal treatment chamber 68 and guided to the swing shelf 51. Is located below the connecting frame 111, and there is no hindrance to the arrangement of the connecting frame 111 or the installation of the second milling cylinder 87.

  Further, as shown in FIG. 3 to FIG. 6, the longitudinal direction of the stock-side guide body 82 is formed on the inner surface (hand barrel 69 side) of the stock-side guide body 82 provided on the feed chain 14 side in the handling chamber 66. A stock-side partition plate (partition body) 93 that has a plate-like flat portion in a direction perpendicular to the handle and restricts the conveyance of the object to be processed to the lower side in the conveyance direction in the handling cylinder 69 may be provided.

  An object to be processed that is given resistance to the rearward conveyance by the upper partition plate 83 on the inner surface of the handling cylinder cover 102 tends to stagnate in the handling chamber 66, but the stocker side partition plate provided on the feed chain 14 side. It is possible to prevent the object to be processed from being inserted into the stock of the transported cereal again by 93, and to be discharged from the handling chamber 66 to the outside.

  Furthermore, a rear guide plate 105 may be provided on the rear side (collection chamber 66a side) in the handling chamber 66 and on the feed chain 14 side. As shown in FIG. 7, when the rear guide plate 105 is provided behind the mesh presser 77 and protrudes from the feed chain 14 side in the handling chamber 66 to the upper side of the swing shelf 51 in the sorting chamber 50, the swing shelf The recovery of the scorpion grains within the lateral width of 51 is good.

  When the rear guide plate 105 protrudes from the feed chain 14 side, which is the entrance side of the cereals conveyed to the handling chamber 66, to the sorting chamber 50 side, the cereals conveyed to the handling chamber 66 by the feed chain 14 are guided backwards. It flows in the direction of arrow R (FIG. 7) along the upper surface of the plate 105. Accordingly, since the cereals conveyed to the collection chamber 66a in the handling chamber 66 can be brought closer to the tooth handling 69a side of the handling drum 69, the grains that are being crushed to the stock side by the tooth handling 69a are shaved off. Can be recovered. Then, as shown in FIG. 7, when the protruding end portion of the rear guide plate 105 from the feed chain 14 side to the sorting chamber 50 side is provided along the tip locus of the tooth handling 69a, the rear guide plate 105 and the tooth handling more. The scraping is promoted by the interaction of 69a.

  In this way, even if the grain removed from the cereal being conveyed by the tooth handling 69a of the handling drum 69 is removed from the rear end of the handling chamber 66 at the terminal end, it is recovered by the second chaff sheave 54 of the swing shelf 51. It is easy to be done. Therefore, by adopting this configuration, the object to be processed on the collection chamber 66a side in the handling chamber 66 is discharged to the outside of the combine 1 from the end of the cross flow fan 91 or the swing shelf 51 behind the handling chamber 66. The recovery loss of the third grain is less likely to occur, and the grain recovery efficiency is improved.

  Therefore, by adopting this configuration, almost the entire amount of the fourth grain processed and removed by the handling drum 69 on the rear side of the handling chamber 66 (recovery chamber 66a side) can be collected in the swing shelf 51. As described above, the recovery of the fourth grain in the swing shelf 51 becomes good, so that the recovery loss of the fourth grain can be reduced. Moreover, the open space can be used effectively and is economical.

  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 embodiment of this invention. It is a top view of the combine of FIG. It is side surface sectional drawing of the threshing apparatus of the combine of FIG. It is a top view of the vicinity of the barrel of the combine threshing apparatus of FIG. FIG. 4 is an elevational sectional view of the threshing device as viewed in the direction of arrows AA in FIG. 3. Fig. 4 is an elevational sectional view of the threshing device as viewed in the direction of arrows BB in Fig. 3. Fig. 4 is an elevational sectional view of the threshing device as seen from the line C-C in Fig. 3. It is the schematic perspective view which showed the structure of the handle cylinder vicinity of the threshing apparatus of the combine of FIG. It is a right view of the threshing apparatus of the combine of FIG. It is a top view of the terminal part of a threshing apparatus of the combine of FIG. 1, a dust removal processing chamber, a small grain recovery chamber, and a waste disposal processing chamber vicinity.

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 20 Pilot seat 30 Glen tank 50 Sorting part 51 Oscillation Shelf 52 Transfer shelf 52a Sorting plate 53 First chaff sheave 54 Second chaff sheave 62 Strollac 63 Sorting net 64 First shelf plate 65 First spiral 66 Handling chamber 66a Collection chamber 67 Second processing chamber 68 Dust processing chamber 68a Dust processing Chamber entrance 69 Handle cylinder 69a Teeth 69b Recovery cylinder 70 No. 2 process cylinder 70a Process teeth
71 dust exhausting cylinder 71a processing tooth 71b spiral 72 dust exhausting cylinder frame 74 handling net 75 second processing cylinder receiving net 76 receiving net 77 handling net holder 78 first cereal cylinder 78a spiral 79 Kara 79a Kara fan 80 wind Inlet 81 Resistance plate 82 Stock side guide body 83 Upper partition plate 85 Second shelf plate 86 Second spiral 87 Second lifting cylinder 87a Spiral 88 Diffusion guide 91 Cross flow fan 93 Stock source side partition plate 95 Waste disposal chamber 96F front middle plate 96R rear middle plate 97 front plate 98 rear plate 100 connecting frame 101 communication port 102 trunk cover 105 rear guide body 110 waste frame 111 connecting frame 113 first intake port 114 second intake port 116 sorting wind guide plate 117 Wind guide

Claims (1)

A handling chamber (66) around a handling cylinder (69) having a tooth handling (69a) for separating and processing the grain from the cereal,
The collection cylinder (69b) that collects a part of the object to be processed is defined as a collection cylinder (69b) that collects a part of the object to be processed in the conveyance direction end portion side of the object to be processed of the handling cylinder (69),
A handling net (74) for filtering an object to be processed generated in the handling chamber (66);
A dust removal treatment chamber provided on the rear side of the handling chamber (66) with the dust removal treatment drum (71) that takes over and treats the workpiece that has reached the end of the conveyance barrel (69) in the conveying direction. (68)
Communication that connects the end of the conveyance direction of the object to be processed by the cylinder (69) of the treatment chamber (66) and the start end of the direction of conveyance of the object by the dust removal treatment cylinder (71) of the dust removal treatment chamber (68). Mouth (101),
Provided in the vicinity of the communication port (101), having a flat surface in a direction substantially orthogonal to the axis of the handling cylinder (69), and provided on the inner wall surface of the ceiling of the handling chamber (66), between the handling cylinder (69) A dust-feeding space (b) that has a non-uniform gap in the circumferential direction and allows a workpiece to be carried around by rotation of the handling cylinder (69) to pass rearward at a position above the communication port (101). A threshing apparatus comprising an upper partition plate (83) provided.

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