JP6048605B2 - Threshing device - Google Patents

Description

  The present invention relates to a threshing apparatus.

  The combine threshing device is provided with a chaff sheave for selecting grains from the object to be treated (grains and swarf) at the bottom of the threshing room, and a scraper for removing swarf and the like adhering to the chaff sheave. It is known in Japanese Unexamined Patent Application Publication No. 2004-81074 and Japanese Unexamined Patent Application Publication No. 2009-1000067.

  The scraper described in Japanese Patent Application Laid-Open No. 2004-81074 has a configuration in which a scraper that scrapes off swarf and the like adhering to a chaff sheave sorting groove is operated by a motor driven by a switch operation during a harvesting operation or when a combine is stopped. The scraper described in Japanese Patent Application Laid-Open No. 2009-100671 is driven to scrape in conjunction with the ascent of the reaping device.

JP 2004-81074 A JP 2009-1000067 A1

  In the scraper drive described above, the operator must manually operate the motor at the timing when the shavings etc. are deposited on the chaff sheave. There are times when sorting becomes worse. In addition, the scraper drive described later may cause a poor sorting of the grains due to a large amount of shavings or the like accumulated on the chaff sheave in a working state where there is little opportunity to raise the reaping device in a wide field harvesting operation.

  Therefore, in the present invention, the operation of the scraper for cleaning the chaff sheave provided in the combine threshing device is automatically performed at the optimum timing, thereby reducing the burden on the operator's steering operation and providing a good threshing selection function. The challenge is to maintain.

  The problems of the present invention are solved by the following technical means.

  According to the first aspect of the present invention, the end portion in the transfer direction of the object to be processed in the handling chamber (66) and the start end portion in the transfer direction of the object to be processed in the dust removal treatment chamber (68) communicate with each other through the communication port (10). And the 1st dust exhaust port which discharges | emits the to-be-processed object which reached the rear-end part of this dust-removal processing chamber (68) to the exterior of a threshing apparatus (15) in the rear-end part of the said dust-removal processing chamber (68) In the threshing device provided with (102) and provided with the sorting chamber (50) having the swing shelf (51) below the handling chamber (66), the threshing device is located behind the first dust outlet (102). A second dust exhaust port (103) for discharging the workpiece that has reached the rear end of the swing shelf (51) to the outside is provided at a position above the rear end of the swing shelf (51). 2 A dust opening (103) is provided with an openable / closable shutter (100) that prevents the grain from being discharged, and the swing shelf (51) has a transfer shelf (52) and a first chamber. A sheave (53) and a second chaff sheave (54) are provided in this order from the upper side in the transfer direction of the object to be sorted, and a second processing chamber is provided in a region extending from the upper side of the transfer shelf (52) to the upper side of the first chaff sheave (53). The second processed material supplied from the front end of the second processing cylinder (70) in (67) to the right front of the transfer shelf (52) is transferred onto the transfer shelf (52) and the first chaff sheave (53). A plate-like diffusion guide (88) for diffusing and guiding in the left-right direction is provided, and a layer thickness sensor (43) for detecting the layer thickness of an object to be sorted passing over the transfer shelf (52) is provided as the diffusion guide (88). The layer thickness sensor (43) is configured such that the contact (44a) is slanted and lowered in a slanting posture with respect to the sensor support shaft (25) arranged in a direction perpendicular to the side surface of the sensor. When the layer thickness of a certain level or more is detected by the first chaff Scraper scraping off Warakuzu adhering to blanking (53) (34) is configured and the threshing apparatus operates.

  According to a second aspect of the present invention, a swing arm (31) for operating the scraper (34) is pivotally supported on a longitudinal support shaft (33) provided on the lower side of the transfer shelf (52), and the swing is performed. One end of the left and right wires (39, 40) is connected to the left and right ends of the drive arm (38) protruding in the left-right direction from the arm (31), and the other end of the left and right wires (39, 40) is driven. It is connected to the motor side, and the scraper (34) is operated by swinging the swing arm (31) in the left-right direction by driving the drive motor, and the layer thickness sensor (43) has a layer thickness of a certain level or more. The threshing apparatus according to claim 1, wherein the drive motor is driven when detected.

  According to the first aspect of the present invention, the layer thickness sensor (43) detects the variation of the layer thickness of the object to be sorted on the transfer shelf (52), and when the thickness exceeds a certain layer thickness, the scraper (43) is activated. The first chaff sheave (53) is less likely to adhere to the sorting object due to a large amount of sawdust, and the sorting object is clogged on the swing shelf (51) so that the operation cannot be continued. It can be prevented from falling, and the efficiency of the threshing sorting operation can be increased. Moreover, discharge of the grain from the second dust outlet (103) can be prevented by the shutter (100).

  Further, the contact (44a) is obliquely rearward with respect to the sensor support shaft (25) arranged in a direction intersecting the side surface of the plate-like diffusion guide (88) in plan view. By suspending in a tilted posture, the influence of vibration can be reduced and the object to be processed can be accurately detected.

  According to the invention described in claim 2, in addition to the effect of the invention described in claim 1, the layer thickness of the object to be selected on the transfer shelf (52) is more than a certain level by the layer thickness sensor (43). When this is detected, the drive motor is driven, so that the clogging of the first chaff sheave (53) can be eliminated and the reduction of the sorting function can be prevented.

It is a left view of the combine of this invention Example. It is a top view of the combine. It is a sectional side view of a threshing apparatus. It is a top view of a threshing apparatus. It is a top view of the sorting room of a threshing apparatus. It is a rear view of a threshing apparatus. It is a partial expanded side view of a dust removal processing chamber and a waste disposal chamber. It is an expanded sectional side view of a threshing apparatus. It is an enlarged plan view of the first chaff sheave. It is an enlarged front view of a 1st chaff sheave. It is a top view of the sorting room of the threshing apparatus which shows another Example. It is a side view of the threshing apparatus which shows another Example. It is a top view of the threshing apparatus which shows another Example. It is a partially expanded side view of the threshing apparatus which shows a layer thickness sensor. It is a side view of the threshing apparatus which shows another Example.

  Embodiments of the present invention will be described below with reference to the embodiments 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.

  1 and 2 has a pair of left and right crawlers 4 formed of a flexible material such as rubber in an endless belt shape at the lower part of the traveling frame 2 of the combine 1 shown in FIG. 1 and FIG. The crawler 4 is provided with a traveling device 3 configured to be able to travel stably and freely only by sinking slightly. A cutting device 6 is mounted on the front portion of the traveling frame 2, and an engine and a threshing (not shown) are provided on the upper portion of the traveling frame 2. The device 15, 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 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 carried out by the interaction between the transfer by the feed chain 14 and the handling net 74 surrounding the underside of the handling cylinder 69 in an arc shape, and the object to be processed (grains and sawdust) is stored in the sorting chamber 50 in the threshing device 15. The grain having a high specific gravity is received by the first chaff sheave 53 while receiving the air from the Karatsu 79 while moving backward on the swing shelf 51 swinging in the vertical and forward / backward directions. It passes through the second chaff sheave 54 and the sorting net 63 and is conveyed from the first helix 65 to the glen tank 30 through the first cereal cylinder 45 having a built-in conveyance helix and temporarily stored in the glen tank 30. On the shaft axis in the longitudinal direction of the first cereal cylinder 45, the straw outlet of the grain tank 30 is provided.

  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, vertical auger spiral (not shown), and horizontal auger spiral (not shown) are rotationally driven in response to the power of the engine and carry 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 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. 4 and 6 by a drive mechanism (not shown) from the engine. 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. The object to be processed separated from the cereal basket passes through the handling net 74 and is received by the swing shelf 51.

  The swing shelf 51 includes a transfer shelf 52 disposed below the handling net 74 of the handling chamber 66, a first chaff sheave 53 and a second chaff sheave 54 disposed from the front to the rear, and a straw disposed at the rearmost end. It comprises a sorting net 63 arranged below the rack 62 and the first and second chaff sheaves 53 and 54.

  The first and second chaff sheaves 53 and 54 shown in FIG. 5 and FIG. 8 are common in that the workpiece is leaked from between the sheaves by swinging back and forth and the wind is selected by blowing air from the Karatsu 79. The first chaff sheave 53 on the front side in the conveyance direction of the workpiece is smaller in size than the second chaff sheave 54 on the rear side, and the interval between the sheaves is somewhat narrow. Since the content rate of single grains in the processed material is high on the front side in the conveyance direction of the processed material, and the ratio of branch rachi adhering grains included in the processed material is large on the rear side, the first chaff sheave 53 leaks sawdust. Only the single grain is allowed to leak while keeping the bottom down, and the swarf is transferred to the rear. In the second chaff sheave 53, the grain is actively leaked, and the wind sorting is performed, and the second branch-attached grain is the second. Such a configuration is adopted in order to transfer to the processing cylinder 70 and to make a single grain.

  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. .

  The transfer shelf 52 disposed in front of the first chaff sheave 53 is provided with a plurality of rack-shaped or flat-shaped sorting plates 52a. The transfer shelf 52 is arranged below the handling cylinder 69 so as to receive the second processed material discharged from the second processing cylinder 70 together with the processing object falling from the handling net 74.

  A sensor support shaft 25 is provided above the transfer shelf 52 in a direction perpendicular to the plate surface of the diffusion guide 88, and a contact 44a having a front side inflated on the sensor support shaft 25 is inclined downward and obliquely backward. It is hung on and fixed. As shown in FIGS. 8 and 14, the contact 44 a regulates the rotation range by pins 28 and 29, and the layer thickness detection posture inclined downward by about 30 ° toward the rear (a in FIG. 14). The rotation of the sensor support shaft 25 is detected by the layer thickness sensor 43 to detect the thickness of the object to be processed on the transfer shelf 52. . By holding the contactor 44a in the backward downward inclined posture, it is possible to reduce the influence of the threshing device 15 due to the inclined state and the vibration during traveling and to detect the amount of the object to be processed.

  When removing the swing shelf 51, the contact 44a is rotated upward and held in contact with the pin 29. Further, as shown in FIG. 15, a hook 44b is provided on the contact 44a, and when the swing shelf 51 is inserted from the side, the contact 44a of the contact 44a rotated upward is brought into contact with the detection position below the contact 44a. You may make it rotate.

  As shown in FIG. 11, the layer thickness sensor 43 is provided with a first contact (first contact) 44 a 1 on the front-rear sensor support shaft 41 in the front-rear direction near the second processed product supply port of the transfer shelf 52. A layer thickness sensor (first layer thickness sensor) 43 a detects the thickness of the object to be processed on the transfer shelf 52 in the left-right direction, and a second contact on the left-right sensor support shaft 42 in the left-right direction at the center of the transfer shelf 52 in the left-right direction. If the second layer thickness sensor (second layer thickness sensor) 43b is provided with a (second contact) 44a2 to detect the thickness of the workpiece on the transfer shelf 52 in the front-rear direction, the first layer The thickness sensor 43a can detect the amount of the second processed material and can also detect the left-right inclination of the vehicle body, which can be used for rolling control of the aircraft. The operation of the scraper 34 is controlled by integrating the layer thicknesses detected by the first layer thickness sensor 43a and the second layer thickness sensor 43b.

  Further, the layer thickness data detected by the layer thickness sensor 43 may be displayed on a monitor provided near the cockpit 20 to notify the operator of the operation of the scraper 34. Furthermore, the threshing processing rate may be displayed on the monitor from the layer thickness data and the vehicle speed.

  The first chaff sheave 53 has plate-like sheaves 35 arranged rearward and inclined, and a scraper 34 that contacts the back side of each sheave 35 is provided on the scraper support arm 36. The scraper support arms 36 are integrally connected to the first chaff sheave 53 in five rows in the horizontal direction by a connecting shaft 37 provided on the bottom surface side of the first chaff sheave 53. The connecting shaft 37 is connected to a swing arm 31 provided in the front-rear direction by a pivot shaft 32, the front end of the swing arm 31 is pivotally supported by the vertical support shaft 33, and the drive arm projects left and right at the front end of the swing arm 31. Wires 39 and 40 are connected to both end portions of 38, the wires 39 and 40 are connected to a drive motor (not shown), and the swing arm 31 is swung left and right by the drive motor so that the scraper 34 is a sheave 35. Scraps and the like adhering to the surface are scraped off.

  The drive motor is driven when the layer thickness sensor 43 detects that the thickness of the object to be processed on the transfer shelf 52 exceeds a certain level, thereby eliminating the clogging of the first chaff sheave 53 and reducing the sorting function. prevent.

  In addition, when the moisture content sensor 46 which detects the moisture content of a kernel is provided in the first lifting cylinder 45 shown in FIG. Therefore, it is also possible to drive the drive motor in a short time without looking at the output of the layer thickness sensor 43 and scrape off the sawdust and the like with the scraper 34.

  As shown in FIG. 13, the drive arm 38 of the scraper 34 includes a first drive arm 38 a and a second drive arm 38 b, and the first drive arm 38 a is provided on the swing shelf 51. The second drive arm 38b may be attached to the tip of the first drive arm and the other end fixed to the thresher front wall 47. Thereby, the scraper 34 can be operated in accordance with the back-and-forth swing of the swing shelf 51, and the operation mechanism of the scraper 34 can be simply configured. The scraper 34 may be moved manually by protruding the second drive arm 38b to the outside of the threshing machine frame.

  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 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 grain having a high specific gravity 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). The 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 (FIG. 7).

  The second kernel (sometimes called the second product) is a mixture of normal kernels, branch boughs, sawdust and scorpion kernels with normal kernels in sawdust. 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.

  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. The part of the object to be processed passes through a receiving net (not shown) provided below the second processing cylinder 70 and directly leaks into the sorting chamber 50. The portion is sent to the front end portion of the second processing cylinder 70 and discharged to the transfer shelf 52 and sent again in the direction of the first chaff sheave 53 and the second chaff sheave 54, and the grains are sent to the first chaff sheave 53 and the second chaff sheave 54. It passes through the sorting network 63 and is collected in the first spiral 65.

  In this way, the second thing is collected and sent again onto 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 sawdust becomes good.

  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 82.

  In addition, among the objects to be processed that have reached the end of the processing object conveyance direction end by the handling cylinder 69 of the handling chamber 66, short objects such as sawdust are transported 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 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 that discharges the workpiece that has reached the rear end of the dust removal processing chamber 68 to the outside of the threshing device 15 is swung between the rear end 68b of the dust removal treatment chamber 68 and 72a. An opening is provided obliquely downward toward the top of the shelf 51 and toward the rear.

  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 by a driving force from the engine via a pulley (not shown).

  As shown in FIG. 3, a suction fan 91 for sucking an object to be processed is provided at the rear part of the threshing device 15, and the dust having a low specific gravity among the dust discharged in the threshing device 15 including the dust processing chamber 68. Air containing waste, 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 object to be processed 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 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 transported rearward on the swing shelf 51 and that does not filter from the mesh of the first and second chaff sheaves 53 and 54 and the Strollac 62 is the swing of the swing shelf 51 and the transport of the Strollack 62. Due to the action, it 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 is thus discharged together with the sawdust to the outside of the combine 1. The third grain is called the third grain, and the third grain is discharged outside the threshing device 15 as the third loss (third loss), the third grain recovery loss, and the like.

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

  According to the present embodiment, as shown in the rear view inside the threshing apparatus in FIG. 6, the handling cylinder 69 is sandwiched in the dust chamber 83 formed on the rear side of the handling chamber 66 and on the upper side of the swing shelf 51. A suction fan 91 is provided at a position facing the dust removal processing chamber 68, and reaches the rear part on the dust exhaust discharged from the first dust discharge port 102 at the rear end of the dust removal processing chamber 68 and the swing shelf 51. The dust is sucked by the air blown by the rotation of the suction 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 object to be processed that has reached the rear end side of the swing shelf 51 is combined with the combine 1 in the rear end portion of the swing shelf 51 behind the first dust discharge port 102 of the dust discharge processing chamber 68. A second dust discharge port 103 for discharging to the outside is provided, and in order to prevent the third grain from being discharged from the second dust discharge port 103, an openable / closable shutter (plate) 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.

10 communication port 15 threshing device 25 sensor support shaft 31 swing arm 33 longitudinal support shaft 34 scraper 38 drive arm 39 wire 40 wire 43 layer thickness sensor 44a contact 50 sorting chamber 51 swing shelf 52 transfer shelf 53 first chaff sheave 54 first 2 chaff sheave 66 Handling chamber 68 Dust removal processing chamber 69 Handling cylinder 70 Second processing drum 88 Diffusion guide 100 Shutter 102 First dust outlet 103 Second dust outlet

Claims (2)

  A terminal end in the transfer direction of the object to be processed in the handling chamber (66) and a start end part in the transfer direction of the object to be processed in the dust removal chamber (68) are communicated with each other through the communication port (10). ) Is provided with a first dust discharge port (102) for discharging the workpiece that has reached the rear end portion of the dust removal treatment chamber (68) to the outside of the threshing device (15). In the threshing apparatus provided with the sorting chamber (50) having the swing shelf (51) below (66), the rear end of the swing shelf (51) located behind the first dust outlet (102) A second dust exhaust port (103) for discharging the workpiece that has reached the rear end of the swing shelf (51) to the outside is provided in the upper part of the unit, and the second dust exhaust port (103) An openable / closable shutter (100) for preventing grain discharge is provided, and the swing shelf (51) includes a transfer shelf (52), a first chaff sheave (53), and a second switch. A sieve (54) is provided in order from the upper side in the transfer direction of the object to be sorted, and the second chamber in the second processing chamber (67) is provided in a region extending from the upper side of the transfer shelf (52) to the upper side of the first chaff sheave (53). A plate for diffusing and guiding the second processed material supplied from the front end portion of the processing cylinder (70) to the right front portion of the transfer shelf (52) in the horizontal direction on the transfer shelf (52) and the first chaff sheave (53). And a layer thickness sensor (43) for detecting the layer thickness of an object to be sorted passing over the transfer shelf (52) is orthogonal to the side surface of the diffusion guide (88) in plan view. The contact (44a) is slanted rearwardly and suspended from the sensor support shaft (25) arranged in the direction to be inclined, and the layer thickness sensor (43) provides a layer thickness of a certain level or more. Wrinkles adhering to the first chaff sheave (53) when detected Threshing apparatus scraped drop scraper (34) is configured to operate the.   A swing arm (31) for operating the scraper (34) is pivotally supported on a longitudinal support shaft (33) provided on the lower side of the transfer shelf (52), and extends in the left-right direction from the swing arm (31). One end of the left and right wires (39, 40) is connected to the left and right ends of the drive arm (38), and the other end of the left and right wires (39, 40) is connected to the drive motor side. The scraper (34) is operated by swinging the swing arm (31) in the left-right direction by driving, and when the layer thickness sensor (43) detects a layer thickness above a certain level, the drive motor The threshing apparatus according to claim 1, which is configured to be driven.

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