JP2011244765A - Threshing apparatus for combine harvester - Google Patents

Abstract

PROBLEM TO BE SOLVED: To maintain the good threshing performance by preventing a treated product from flowing backward to a threshing cylinder side at the feeding position from a second product-lifting cylinder of a second product-threshing cylinder in a threshing apparatus having a threshing cylinder and the second product-threshing cylinder parallelly arranged in a threshing chamber, and feeding the second product leaked down from the rear part of a swinging selection shelf at the lower side of the threshing chamber to the second product-treating cylinder.SOLUTION: The threshing apparatus 15 is constituted by surrounding the threshing cylinder 69 axially supported in the threshing chamber 66 with a threshing net 74, and axially supporting the second product-threshing cylinder 70 so as to neighbor to the threshing net 74, to feed the treated product dropped from the swinging selection shelf 51 at the lower part of the threshing cylinder 69, to the second product-threshing cylinder 70 side by a second product-lifting cylinder 87. A screen wall 61 for preventing the treated product from flying out to the threshing cylinder 69 side is installed in the feeding position of the second product-lifting cylinder 87 to the second product-treating cylinder 70.

Description

  The present invention relates to a combine threshing apparatus.

  As described in Patent Document 1, as a threshing device for a combine, a handling cylinder and a second processing cylinder are mounted in parallel on the left and right in the threshing chamber, and the threshing is carried out with the handling cylinder while feeding the cereals backward, and the threshing is performed with the handling cylinder. The processed grain is sorted by the swing sorting shelf provided at the bottom of the barrel and collected as the first grain as it is, and the processed material (grain and sawdust) that falls from the rear of the swing sorting shelf is the second processed product. As a result, it is sent to the second processing cylinder side with the second lifting cylinder and processed to remove branch branch, etc., and is supplied again to the swing sorting shelf to increase the recovery rate of grains, and part of the processed material in the handling chamber There is a combine threshing device in which the threshing performance is improved by passing the mesh of the handling net through the second processing cylinder.

JP 2009-72160 A

  In the threshing apparatus, the processed material sent to the rear end of the handling net of the handling cylinder is sent to the supply port on the second processing cylinder side, and the second processed material with a large amount of grain falling from the swing sorting shelf Is also sent near the supply port of the No. 2 processing cylinder by the No. 2 milling cylinder. At the feed port of the No. 2 processing cylinder, the No. 2 thing jumps over the processing cylinder to feed the processed material from the end of the No. 2 grain helix spiral installed in the No. 2 grain. There was a problem that a large amount of the second thing flowed into the handling chamber through the mesh and impaired the threshing capacity of the handling cylinder.

  Therefore, in the present invention, in the threshing apparatus in which the handling cylinder and the second processing cylinder are arranged in parallel in the threshing chamber, and the processed material falling from the swing sorting shelf below the handling chamber is supplied to the second threshing cylinder, It is an object of the present invention to prevent the processed material from flowing backward to the barrel side at the supply position from the second lifting cylinder and to maintain good threshing performance.

The problems of the present invention are solved by the following technical means.
In the invention according to claim 1, the handling cylinder (69) is pivotally supported in the inside of the handling chamber (66), and a handling net (74) is provided from the lower part to the side of the handling cylinder (69). The second processing cylinder (70) was pivotally supported on the side of the handling chamber (66) across the handling net (74) and leaked from the rear of the swing sorting shelf (51) provided below the handling chamber (66). It is set as the structure which supplies a 2nd thing to the start end side of a 2nd processing cylinder (70) with a 2nd lifting cylinder (87), and the 2nd reduction | restoration opening | mouth (93) provided in the conveyance termination of the said 2nd lifting cylinder (87) ) And the handling net (74), the second thing discharged from the second reducing port (93) passes through the mesh of the handling net (74) and reaches the inside of the handling chamber (66). A combine threshing device is provided with a wall (60, 61) for blocking.

With this configuration, the processed product discharged from the second lifting cylinder (87) to the second processing cylinder (70) side is applied to the wall (60, 61) and dropped, and does not enter the handling cylinder (69) side. .
The invention according to claim 2 is the combine threshing apparatus according to claim 1, wherein the wall body (60, 61) is in a vertical posture.

With this configuration, sawdust and the like are not deposited and deposited on the wall bodies (60, 61).
The invention as set forth in claim 3 is characterized in that the space (D1) between the barrel side body portion (59) formed in the wall body (61) and the discharge port of the second lifting cylinder (87) is the barrel side wall body portion. The threshing apparatus for a combine according to claim 1 or 2, characterized in that it is wider than the interval (D2) between (59) and the handling net (74).

  With this configuration, the processed product released from the second lifting cylinder (87) more than the handling cylinder (69) side is supplied to the second processing cylinder (70) without clogging.

  According to invention of Claim 1, the processed material discharged | emitted vigorously from the 2nd cereal cylinder (87) falls on a wall (60, 61), and is supplied to the 2nd processing cylinder (70). Thus, it is possible to prevent the processed material from jumping into the handling cylinder (69) side and to prevent a reduction in the threshing efficiency and the sorting accuracy.

  Further, according to the invention described in claim 2, in addition to achieving the effect of the invention described in claim 1, the processed material that hits the wall body (60, 61) is easily dropped, and the wall body (60 , 61) can be prevented.

  Moreover, according to the invention of Claim 3, in addition to having the effect of the invention of Claim 1 or Claim 2, a processed material having a large amount released from the second lifting cylinder (87) is clogged. And the threshing operation can be performed smoothly.

It is a left view of the combine of this invention Example. It is a top view of the combine. It is side surface sectional drawing of the threshing apparatus of the combine. It is a top view near the handling cylinder of the threshing apparatus of the combine. It is a top view of the sorting room of the combine. It is a rear view of the threshing apparatus of the combine. It is a partial expanded side view of the dust treatment chamber and the waste treatment chamber of the combine. It is an expansion front sectional view of a threshing apparatus. It is a plane sectional view of a threshing apparatus. It is a sectional side view of a threshing apparatus. It is a lower expanded side sectional view of a threshing apparatus. It is an expanded view of a handling cylinder. It is a partial expanded development view of a handling cylinder. It is an enlarged side view of a stabbed fallen tooth.

Hereinafter, embodiments of the present invention will be described with reference to examples shown in the drawings.
FIG. 1 shows a left side view of a combine for harvesting cereals as a present embodiment, FIG. 2 is a plan view of the combine, and FIG. 3 is a side sectional view in which a portion of the combine threshing device is cut away. Indicates.

In this 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 by slightly sinking, 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 provided 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 to raise and lower the entire reaping device 6 by an expansion and contraction action of a reaping lifting cylinder (not shown), and to harvest cereals vegetated on the field 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 conveying device, a handling depth adjusting device, a supply conveying device, etc. (not shown) is successively transferred and transferred to the cereal basket and the threshing device 15. It is arranged so that the depth of handling 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 a mowing / threshing clutch (not shown) is operated to transmit the rotating parts of the aircraft. However, when the traveling frame 2 travels 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 chamber 50 provided integrally below the handling chamber 66. Thresh and sort the harvested cereal meal.

  As will be described in detail later, the cereals supplied to the threshing device 15 are inserted into the handling chamber 66, which is the main threshing portion, with the tip side inserted into the handling chamber 66. Threshed by interaction of the first handle 69a, the second handle 69b, the transfer by the feed chain 14, and the handle net 74 surrounding the underside of the handle drum 69 in an arc shape, and processed products (grains and sawdust) Is received by the swing sorting shelf 51 of the sorting chamber 50 in the threshing device 15 and moved to the rear on the swing sorting shelf 51 swinging in the vertical and forward / backward directions while receiving wind from the Karatsu 79 and being subjected to wind sorting. The grain having a large specific gravity passes through the first chaff sheave 53, the second chaff sheave 54, and the sorting net 63, and passes through the first helix 65 (not shown) containing the conveying helix from the first helix 65 to the grain. It is transported to the tank 30 and temporarily stored in the Glen tank 30. The straw outlet of the grain tank 30 is provided on the longitudinal axis of the first cereal cylinder.

  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 80a (FIG. 4) and the culling head chain 80b (FIG. 4). It is conveyed, thrown into the waste disposal chamber 82 at the rear of the threshing device 15 and released to the field. In the waste treatment chamber 82, waste cutter blades 81a and 81b are provided, and the cereals cut by the waste cutter blades 81a and 81b are below the waste cutter blades 81a and 81b, The base portion is supported by the front wall portion of the paddy processing chamber 82, and is guided to a plate-shaped cutting paddle guide 96 (FIG. 3) provided in a backward downward inclination and is 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, the vertical auger spiral (not shown), and the horizontal auger spiral (not shown) are rotationally driven in response to the power of the engine and convey the stored grains by the rotation of the spirals.

  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 cylinder 69 pivoted in the handling chamber 66 has a large number of first handling teeth 69a and second handling teeth 69b provided on the surface thereof, and a driving mechanism (not shown) from the engine is used as shown in FIG. It rotates in the direction of arrow B in FIG. The cereal 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 first tooth 69 a and the first tooth 69 a of the handling drum 69 that rotates in the direction of arrow B. Threshing is performed by the interaction between the second tooth 69b and the net 74. The processed material separated from the cereals passes through the handling net 74 and is received by the swing sorting shelf 51.

  The swing sorting 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 chaff sheave 53 and the second chaff sheave 54 arranged from the front to the rear thereof. It is composed of a sorting net 63 arranged below the Strollac 62 and the first and second chaff sheaves 53 and 54, and the support shaft 55 provided at the front lower portion of the transfer shelf 52 is swingably supported by the swinging rotation shaft 56. Although the entire swing sorting shelf 51 swings back and forth due to the rotation of the rotating shaft 56, the bracket 57 that supports the swing rotating shaft 56 is movable up and down. By changing the vertical position of the oscillating rotating shaft 56, the inclination angle toward the rear of the oscillating sorting shelf 51 is changed, so that the optimum sorting state can be achieved corresponding to the change in the blowing angle of the sorting air from the tang 79.

  The first chaff sheave 53 and the second chaff sheave 54 are common in that the processed material leaks between the sheaves while swinging, and the wind is selected by blowing air from the tang 79. The first chaff sheave 53 is smaller in size than the second chaff sheave 54 on the rear side, and the interval between the sheaves is somewhat narrow. On the front side in the direction of conveyance of the processed material, the content of single particles in the processed material is high, so that only single particles are leaked while suppressing the leakage of the sawdust, and such waste is transferred further to the rear. It is configured.

  Further, a diffusion guide 88 is provided above the transfer shelf 52 and the first chaff sheave 53 to diffuse the second processed material supplied to the right front side of the transfer shelf 52 horizontally on the transfer shelf 52 and the first chaff sheave 53. .

  And the transfer shelf 52 arrange | positioned ahead of the 1st chaff sheave 53 receives the 2nd processed material discharged | emitted from the 2nd processing cylinder 70 with the processed material which is arrange | positioned under the handling cylinder 69 and falls from the handling net 74. It is the structure to get.

  The first threshed grain that leaks to the front area of the handling net 74 is a single grain and does not contain impurities, so there is no need to coarsely sort on the first chaff sheave 53 or the second chaff sheave 54, and a direct lower sorting. Wind can be selected by blowing air from the tang 79, which will be described later on the net 63, and the load on the chaff sheaves 53 and 54 can be reduced, and efficient threshing becomes possible.

  Further, since the swing sorting shelf 51 swings up and down and forward and backward by the operation of a swing shelf drive mechanism (not shown), the processed material leaks onto the swing sorting 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 (not shown). 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 processed products on the swing sorting shelf 51, the lighter ones are blown off by the swinging action of the swing sorting shelf 51 and the air blown by the fan 79a of the Karatsu 79, and the first chaff sheave 53, the first chaff sheave 53, 2 moves toward the chaff sheave 54 in the direction of arrow D, and the second small grain on Strollack 62 leaks in the direction of arrow G and is collected on the second shelf 85, It is conveyed to the second lifting cylinder 87 (FIG. 7).

  The second kernel (sometimes referred to as the second product) is a mixture of normal kernels, branch stems, sawdust, etc., and is lifted by the second lifting cylinder spiral 89 in the second lifting cylinder 87. Then, it is discharged from the second reduction port 93 to the upper side of the second processing chamber 67.

  A first wall body 60 and a second wall body 61 are provided on the second processing cylinder 70 on the outlet side of the second reduction port 93. The first wall body 60 and the second wall body 61 are vertical surfaces perpendicular to the axial direction of the second processing cylinder 70, and the second wall body 61 is bent to form a handling cylinder side wall body portion 59. The first wall body 60 and the second wall body 61 weaken the jumping force of the second grain released from the second reduction port 93 and pass through the mesh of the handling net 74 and enter the handling cylinder 69 side. It also has the effect of separating the second grain and removing the branch rachis. In particular, the second grain 61 is prevented from hitting the handling net 74 at the handling cylinder side wall 59 of the second wall 61, and the distance D1 from the second reducing port 93 side is set to the distance from the handling net 74 as shown in FIG. It is made wider than D2 so as not to hinder the discharge of the second grain.

  A second processing cylinder 70 pivoted under the second processing chamber 67 rotates in the direction of arrow J in FIG. 4 by a drive mechanism that transmits power from the engine. 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. Is removed and sent to the front end of the second processing cylinder 70, discharged from the front end opening of the second processing rod 75 to the transfer shelf 52, and again in the direction of the first chaff sheave 53 and the second chaff sheave 54. 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 and sent again onto the transfer shelf 52 and re-sorted by the first chaff sheave 53 and the second chaff sheave 54, so that the separation between the grain and the sawdust becomes good.
The threshing cereals that have been threshed in the processed material that has traveled in the direction of arrow A in FIG. 4 and reached the end of the handling room 66 are conveyed in the direction of arrow A1 shown in FIG. Then, it is put into the waste disposal chamber 82.

  In addition, among the processed materials that have reached the terminal end side in the conveying direction by the handling cylinder 69 of the handling chamber 66, short items such as sawdust are opened on the peripheral surface of the lower handling position of the grain candy in 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 processing chamber 66 and the start end of the processed product in the dust collection chamber 71 in the dust collection chamber 68. .

  A partition wall 112 erected from the peripheral surface of the handling chamber 66 toward the handling cylinder 69 is provided on the lower side of the conveyance port 101 of the handling chamber 66, and guides non-treated materials in the handling chamber 66 to the dust disposal chamber 68. . However, on the lower side of the partition wall 112, there is no processed material containing a large amount of swarf, and the grain stalk and the grain stabbed in the stalk are well separated by the action of the tooth handling, and the handling drum 69 It is set as the stabbed grain collection | recovery chamber which drops a grain to the rocking | swiveling selection shelf 51 from the terminal part of this.

  The processed material introduced from the dust processing chamber inlet 68 a enters the dust processing chamber 68 by the action of the spiral 71 b that improves the intake from the handling chamber 66, and the dust processing cylinder 71 rotates in the dust processing chamber 68. The processing teeth 71a are processed while being conveyed in the arrow K direction (FIG. 3). 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 processing cylinder 71, a lattice-like dust processing cylinder frame 72 (FIG. 6) is provided along the lower side of the dust processing cylinder 71 and the outer periphery of the handling chamber 66 side. The filter body of the chamber 68 is configured.

  A rear end 72 a (FIG. 3) of the dust removal treatment cylinder frame 72 is disposed forward of a predetermined distance from a rear end 68 b (FIG. 3) of the dust removal treatment chamber 68. The first dust discharge port 102 for discharging the processed material reaching the rear end of the dust removal processing chamber 68 to the outside of the threshing device 15 between the 72a and the rear end 68b of the dust removal processing chamber 68 is swing-sorted. An opening is provided obliquely downward toward the top of the shelf 51 and toward the rear.

  Leakage (grains) in the processed material mainly composed of sawdust containing a small amount of grain that entered the dust disposal chamber 68 leaks from the receiving net 76 (FIG. 3) onto the swing sorting shelf 51. Then, it is guided to the Strollac 62 provided on the swing sorting shelf 51 and sent from the second shelf plate 85 to the second processing chamber 67 via the second lifting cylinder 87. The driving force from the engine is transmitted through a pulley (not shown) to drive the second processing drum 70 and the dust removal processing drum 71 on the same axis.

  As shown in FIG. 3, a suction fan 91 for sucking a processed product is provided at the rear part of the threshing device 15, and among the dust generated in the threshing device 15 including the dust processing chamber 68, the dust having a low specific gravity. Then, air containing branches and dust is sucked by blowing air by rotation of the suction fan 91, blown out in the direction of arrow L from the third dust outlet 92, and discharged to the outside of the combine 1.

  On the other hand, the processed material that is not sucked by the air blown by the rotation of the suction fan 91 is provided at the rear end of the stroller 62 that is the terminal portion of the swing sorting shelf 51 and is formed on the rear wall 15 a of the threshing device 15. It is discharged from the mouth 103 to the outside of the combine 1.

  The sawdust that has been moved rearward on the swing sorting shelf 51 and that is not filtered from the mesh of the first chaff sheave 53 and the second chaff sheave 54 and the Strollac 62 is the swing of the swing sorting shelf 51 and the Strollac 62. Is discharged from the second dust outlet 103 to the outside of the threshing device 15, but the grain may be slightly contained in the sawdust, and thus the outside of the combine 1 together with the sawdust. The discharged grain is referred to as third grain, and the third grain discharged to the outside of the threshing device 15 is referred to as third loss (third loss), third grain recovery loss, or the like.

  Further, among the dust (dusted material) that has fallen as shown by the arrow M (FIG. 3) from the dust processing chamber 68 to the end of the swing sorting shelf 51, the second grain, the third grain, etc. have a small diameter and specific gravity. The heavy one passes through the Strollac 62 at the end of the swing sorting shelf 51 or the second chaff sheave 54 in the direction of the arrow G, leaks onto the second shelf 85, and is again processed in the second processing chamber 67. The

  As shown in the rear view of the inside of the threshing apparatus in FIG. 6, in the dust removal chamber 83 formed on the rear side of the handling chamber 66 and on the upper side of the swing sorting shelf 51, A suction fan 91 is provided at the opposite position to suck out the dust discharged from the first dust outlet 102 at the rear end of the dust processing chamber 68 and the dust reaching the rear of the swing sorting shelf 51. The air is sucked by the air blown by the rotation of the fan 91, led to the third dust outlet 92 below the suction fan 91, and discharged to the outside of the combine 1.

  In addition, the processed material that reaches the rear end side of the swing sorting shelf 51 is combined with the rear end portion of the swing sorting shelf 51 behind the first dust discharge port 102 of the dust removal processing chamber 68. 1 is provided with a second dust discharge port 103 for discharging to the outside, and in order to prevent the third grain from being discharged from the second dust discharge port 103, an openable / closable shutter (plate body) ) 100 is provided.

  As shown in FIG. 6, the shutter 100 is formed by a plate having a longitudinal direction in the left-right direction, and as shown in the partially enlarged side view of the dust removal processing chamber 68 and the waste disposal chamber 82 in FIG. Both ends are supported at the upper end by a projecting part that extends the rear wall 15a of the threshing device 15 to the rear side, and the lower end of the shutter 100 is openable with an opening / closing shaft 110 extending in the left-right direction as a fulcrum. .

  The shutter 100 is integral with the opening / closing shaft 110, and when the opening / closing shaft 110 rotates, the lower end of the shutter 100 is integrally opened with the opening / closing shaft 110. Further, since the opening / closing arm 111 made of a plate material having a flat surface in a direction orthogonal to the opening / closing shaft 110 is fixed to the opening / closing shaft 110, when the opening / closing arm 111 is rotated about the opening / closing shaft 110, the opening / closing shaft 110 110 also rotates with this movement.

  The end of the open / close arm 111 opposite to the fulcrum (the connecting portion with the open / close shaft 110) is connected to an operation wire 107 that can be pushed and pulled in conjunction with the vertical movement of the mowing device 6 described later. Further, the opening / closing arm 111 is connected to one end of the opening-direction biasing spring 95 on the opposite side of the operation wire 107 to the connection portion with the operation wire 107. The other end of the opening direction biasing spring 95 is connected to the rear wall 15a side of the threshing device 15. Therefore, the open / close arm 111 is always biased in the direction to open the shutter 100.

  When the operation wire 107 is loosened, as shown in FIG. 7, the opening / closing arm 111 is moved in the direction of arrow A by the pulling force of the opening direction biasing spring 95 to operate the shutter 100 in the opening direction.

  As shown in FIG. 6, the shutter 100 that opens and closes the second dust outlet 103 and the opening and closing shaft 110 that serves as a fulcrum thereof are installed portions of the suction fan 91 that exhausts dust to the third dust outlet 92 in the rear view of the threshing device portion. It extends to the dust removal treatment cylinder 71 side opposite to that of the dust removal treatment chamber 68 and is provided behind the end of the dust removal treatment chamber 68.

  The pulling operation of the operation wire 107 may be configured to close the shutter 100 by pulling the operation wire 107 in conjunction with the ascent of the reaping device 6 as will be described later. You may comprise so that it may be performed by operation.

  Thus, the protrusion of the opening / closing shaft 110 from the terminal end of the threshing device 15 to the waste disposal processing chamber 82 where the rear waste cutter blades 81 a and 81 b are installed is suppressed, and the fall of the waste from the waste disposal chamber 82 is prevented. There is no hindrance. Further, the discharge of the dust from the second dust outlet 103 is not hindered. Compared to the case where the open / close arm 111 is located beside the dust disposal chamber 82, the opening / closing arm 111 is installed more compactly, and the capacity of the glen tank 30 is not sacrificed.

  Since the opening / closing shaft 110 serving as a pivotal fulcrum of the shutter 100 is provided in a space portion between the terminal end of the threshing device 15 and the cutting shear guide 96 in the front part of the rejection processing chamber 82, the shutter 100 is the rejection cutter. The blades 81a and 81b can be installed without any hindrance to the falling and spreading of the cutting scraps, etc., and the opening amount of the shutter 100 can be maximized, and the discharge of the dust is effective. Yes.

  Further, as shown in FIG. 3, an air split section 104 is provided on the wind path of the selected wind from the Karatsu 79, and the upper wind path A and the lower wind path are sent from the Karatsu 79 by the wind split section 104. Divided into B. The upper guide plate 106 and the lower guide plate 105 that form the upper air path A are integrally rotated up and down, and the air blowing direction is moved up and down so that when there are few items to be selected, the upper guide plate 106 is tilted upward. To be able to change. As shown in FIG. 11, the side cross-sectional shape of the lower guide plate 105 is such that the air dividing portion upper surface 105 a is straight, the lower surface 105 b is substantially parallel to the bottom surface of the sorting chamber 50, and the rear end portion of the lower surface 105 b is upward. And an inverted chevron shape (inverted triangular shape) connected to the upper surface 105a.

  At the rear of the sorting net 63, a sorting adjustment plate 108 is provided that slides back and forth to adjust the position of the grain leakage. A number of ventilation openings smaller than the diameter of the grain are formed in the sorting adjustment plate 108, and the sorting wind from the tang 79 is sent to the first chaff sheave 53 to dry the sorting to prevent adhesion. The selection wind at the tip of the is not too strong.

12 to 14 show the configuration of the handling cylinder 69. FIG.
First handling teeth 69a are projected and fixed at a pitch of 3 circumferences from the front to the middle of the handling chamber 66 of the handling drum 69, and six second handling teeth 69b are arranged at one place on the rear. The protrusions are fixed at 3 or 4 pitches. Further, the stabbed drop-off teeth 69c are fixed to the rear end side of the handling drum 69 at a pitch of 4 circumferences.

  The stab drop-off tooth 69c is composed of a first tooth 69c1, a second tooth 69c2, and a third tooth 69c3, and the plate surfaces of the first tooth 69c1 and the third tooth 69c3 are inclined by about 30 ° with respect to the rotational direction. The three teeth 69c3 are located behind the first teeth 69c1. The second tooth 69c2 has a plate surface orthogonal to the rotational direction between the first tooth 69c1 and the third tooth 69c3, and has a triangular shape in side view as shown in FIG. It is the same as or lower than the third tooth 69c3.

  With such a configuration of the stab particle dropping teeth 69c, the driving load of the handling drum 69 is reduced, and the stab particle recovery from the sawdust is improved.

DESCRIPTION OF SYMBOLS 15 Threshing apparatus 22 Oscillating sorting shelf 59 Handling cylinder side wall part 60 1st wall body 61 2nd wall body 66 Handling room 69 Handling cylinder 70 No.2 processing cylinder 74 Handling net 87 No.2 milling cylinder D1 Handling cylinder side wall part 59 and the distance between the outlet of the second lifting cylinder 87 D2 The distance between the side wall body 59 and the net 74

Claims (3)

  A handling cylinder (69) is pivotally supported in the inside of the handling chamber (66), a handling net (74) is provided from the lower part to the side of the handling cylinder (69), and the handling net (74) is separated from the handling net (74). The second processing cylinder (70) is pivotally supported on the side of the chamber (66), and the second thing leaked from the rear part of the swing sorting shelf (51) provided below the handling chamber (66) is the second milling cylinder. (87) is configured to be supplied to the start end side of the second processing cylinder (70), and the second return port (93) provided at the conveyance end of the second lifting cylinder (87) and the handling net (74) In the meantime, the wall body (60, 61) prevents the second thing discharged from the second reducing port (93) from passing through the mesh of the handling net (74) and into the handling chamber (66). A threshing device for a combine, characterized in that.   The combine threshing device according to claim 1, wherein the wall bodies (60, 61) are in a vertical posture.   A distance (D1) between the barrel side body portion (59) formed on the wall body (61) and the discharge port of the second lifting cylinder (87) is defined as a barrel side wall portion (59) and a handling net (74). The threshing device for a combine according to claim 1 or 2, characterized in that it is wider than the distance (D2) between the two.

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