JP2010075165A - Thresher of combine harvester - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a thresher disposed with a driving member for an insulator of a second dust discharge port so as not to sacrifice the capacity of a grain tank. <P>SOLUTION: An opening and closing arm 111 for opening and closing an opening and closing plate body 100 giving resistance to an object to be processed discharged from a first dust discharge port 102 for discharging the object to be processed having reached the rear end part of a dust discharging chamber 68 and a second dust discharge port 103 for discharging the object to be processed having reached the rear end part of a rocking shelf 51 is supported by a rear wall 15a of the thresher 15 at a position extended outward from the rear end part of a dust discharging chamber 68 on the opposite side of the installation position of a suction fan 91. The capacity of the grain tank 30 is not sacrificed as the opening and closing arm 111 is installed to be more compact compared to the case in which the opening and closing arm locates on the side of a dust discharging chamber 82. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

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

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 cereals harvested by the reaping device are transported and inserted by the feed chain, and the cereals are provided with tooth handling provided on the surface of the handling cylinder that is pivoted in the handling room Threshed by interaction with the net. The material to be processed (grains and wastes) separated from the cereals passes through the handling net and is received by the swing shelf of the sorting room, and is subjected to air sorting by air blow from the Karatsu or swinging sorting of the swing shelf. Separate the second grain and sawdust and transport only the grain to the glen 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 remaining threshed cereals that have reached the end of the threshing device's handling chamber are kept in a long length after being transported by the scouring and transporting device and put into the slaughtering treatment chamber at the rear of the threshing device. To be released.

  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 in order to improve the collection efficiency of the grain, the second grain and the third grain discharged from the end of the swing shelf to the outside of the combine, the grain is stuck in the threshing waste that has been threshed in the handling chamber It is important to reduce the recovery loss of No. 4 grains such as stabbed grains (which are generated when normal grains are stabbed with the straw).

For example, an openable / closable shield is provided at the second dust outlet at the end of the swing sorter so that the processed material is not unduly discharged when the direction of the machine is changed. A configuration has been proposed in which the shield is closed when the feed chain is cut (Patent Document 1 below).
JP-A-9-187159

  According to the configuration described in Patent Document 1 above, since the shield of the second dust outlet is closed when the drive of the feed chain is stopped when the direction of the headland or the like is changed, the processed material is out of the machine even when receiving air from the tang Can be prevented. However, in Patent Document 12, the shield is freely swingable about a horizontal axis that is long in the direction crossing the machine body above the rear end portion of the Strollac on the transfer terminal side of the swing sorting device. It is supported by. Therefore, in the said structure, it is necessary to arrange | position the member for the opening / closing drive of the horizontal axis | shaft of a shielding body in the position adjacent to a threshing apparatus, and the capacity | capacitance of a Glen tank becomes small correspondingly.

  The subject of this invention is providing the threshing apparatus which has arrange | positioned the driving member of the shielding body of a 2nd dust exhaust port so that the capacity | capacitance of a Glen tank may not be sacrificed.

The above problem can be solved by the following solution means.
The invention according to claim 1 takes over and treats the harvested cereals by the handling cylinder (66) with the handling cylinder (69) and the workpiece that has reached the end of the handling chamber (66) in the conveying direction. A dust removal treatment cylinder (71) is pivoted, a dust removal treatment chamber (68) provided on the rear side of the treatment chamber (66), and below the treatment chamber (66) and the dust treatment chamber (68). A sorting chamber (50) provided with a swing shelf (51) that swings and sorts the object to be processed falling from the handling chamber (66) and the dust removal processing chamber (68) while being conveyed backward; A dust discharge chamber (83) having a suction fan (91) provided on the side of the processing chamber (68) and above the swinging shelf (51) for sucking and discharging dust is provided. In the threshing device (15), in the dust removal chamber (68), the object to be processed that has reached the rear end of the dust removal chamber (68) is subjected to dust removal treatment. A first dust exhaust port (102) that discharges from the chamber (68) to the outside is provided, and the sorting chamber (50) reaches the rear end of the swing shelf (51) in the sorting chamber (50). A second dust exhaust port (103) for discharging the workpiece to the outside is provided, and the outlets of the first dust exhaust port (102) and the second dust exhaust port (103) are opened and closed to remove both dusts. A plate body (100) that provides resistance to the workpiece discharged from the mouth (102, 103) is provided on the rear wall (15a) of the threshing device (15) and supported by the rear wall (15a) of the threshing device (15). A combine threshing device in which an opening / closing arm (111) for opening and closing the plate body (100) is provided at a position behind a rear end portion of the dust removal processing chamber (68).

  According to the second aspect of the present invention, the waste cutter (81a, 81b) that cuts the soot behind the dust exhaust chamber (83) and the guide that is cut by the cutter (81a, 81b) are directed downward. A waste disposal chamber (82) having a cutting shear guide (96) to be provided is provided, and an opening / closing shaft (110) serving as a pivot for the opening / closing arm (111) for opening / closing the plate body (100) is provided as a threshing device (15 The threshing device for a combine according to claim 1 provided between a rear wall (15a) and a cutting shear guide (96) disposed in a front part of the waste disposal chamber (82).

  According to the first aspect of the present invention, the opening / closing arm 111 of the plate body 100 is provided on the rear wall 15a of the threshing device 15 at the position where the opening / closing arm 111 extends outward from the rear end portion of the dust removal processing chamber 68. Compared with the case where the arm 111 is next to the dust disposal chamber 82, the arm 111 can be installed more compactly, the capacity of the Glen tank 30 can be secured large, and the work efficiency can be increased.

  According to the invention described in claim 2, in addition to the invention described in claim 1, the plate body 100 can be installed without causing any hindrance to the dropping and spreading of the cutting waste by the rejecting cutters 81a and 81b. The open amount of the body 100 can be maximized, the waste can be effectively discharged to the outside of the threshing device 15, and the threshing operation can be performed smoothly.

Embodiments of the present invention will be described with reference to the drawings.
FIG. 1 shows a left side view of a combine that performs the grain harvesting operation of this embodiment, FIG. 2 shows a plan view of the combine, and FIG. 3 shows a partially cutaway side sectional view of the combine threshing apparatus. . 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 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 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 sawdust) is received by the swing shelf 51 of the sorting chamber 50 in the threshing device 15, up and down, front and rear direction 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 through the first cereal cylinder (not shown) incorporating the conveying spiral 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 cutters 81a and 81b are provided, and the cereals cut by the waste cutters 81a and 81b are below the waste cutters 81a and 81b, and the waste treatment chamber. A base portion is supported by the front wall portion of 82, and is guided to a plate-shaped cutting rod guide 96 (FIG. 3) provided in a backward downward slope and discharged 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 the respective spiral blades. .

4 shows a plan view of the vicinity of the handling drum 69 of the combine threshing device 15 of FIG. 1, FIG. 5 shows a plan view of the combine sorting room of FIG. 1, and FIG. 6 shows the threshing of the combine of FIG. The rear view of an apparatus is shown.
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 provided on the surface thereof, and rotates in the direction of arrow B in FIGS. 4 and 6 by power from the engine by a driving mechanism (not shown). 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. An object to be processed (grains and wastes) 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 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.

  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 grains with normal kernels in the waste. The inside of the whipping cylinder 87 is pumped up by a second whipping cylinder spiral (not shown), and discharged from the second processing chamber entrance to the second processing chamber 67. The second processing cylinder 70 pivoted at the lower portion of the second processing chamber 67 transmits power from the engine and rotates in the direction of arrow J in FIG. 4 by the drive mechanism. The second kernel is separated from the second kernel while branching in the direction of arrow I (FIGS. 3 and 4) while colliding with a number of processing teeth 70a planted in the second processing cylinder 70. The part of the object to be processed passes through a receiving net (not shown) provided below the second processing cylinder 70 and leaks into the sorting chamber 50, and most of the object to be processed is removed. Is sent from the transfer shelf 52 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 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 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 scraps 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, although 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 litter, branch branches and dust is sucked by blowing air by the rotation of the suction fan 91, blown out in the direction of arrow L from the third dust outlet 92, and discharged outside 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 second dust exhaust 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 transferred rearward on the swing shelf 51 and that is not filtered from the mesh of the chaff sheaves 53 and 54 and the Strollac 62 is subjected to the second discharge by the swing of the swing shelf 51 and the transport action of the Strollack 62. Although it is discharged from the throat 103 to the outside of the threshing device 15, the grain may be slightly contained in the sawdust, and thus the grain discharged to the outside of the combine 1 together with the sawdust is three. It is said that the third grain is discharged to the outside of the threshing device 15 as third loss (third loss), the third grain recovery loss, etc.

  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.

  Further, 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.

  In this manner, the protrusion of the opening / closing shaft 110 from the terminal end of the threshing device 15 to the waste disposal chamber 82 where the rear waste cutters 81a and 81b are installed is suppressed, and the fall of the waste from the waste disposal chamber 82 is prevented. There is nothing. 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. 81a and 81b can be installed without any hindrance to dropping and spreading of the cutting rod, etc., and the opening amount of the shutter 100 can be maximized, and the discharge of dust can be effectively performed outside the machine body. .

  As shown in the side view of the main part of the reaping device 6 in FIG. 8 and the view seen from the arrow S direction in FIG. 8 in FIG. 9, the opening / closing means of the shutter 100 is opened and closed in conjunction with the vertical movement of the reaping device 6. ing. When the harvesting support arm 116 provided on the suspension metal 114 at the tip of the harvesting suspension base 115 of the harvesting device 6 is raised to the position indicated by the two-dot chain line in FIG. A cam 118 provided on the moving shaft 116a rotates in the direction of arrow A about the rotating shaft 116a, and a rotating arm 121 having a roller 119 that rolls on the side surface of the cam 118 at the tip end has a rotating fulcrum 121a. The shutter operation wire 107 connected to the base end of the rotating arm 121 rotates in the direction of arrow B around the center, rotates in the direction of arrow C, and the shutter 100 rotates in the direction of closing the second dust outlet 103. .

  In this way, the second dust outlet 103 can be reliably opened and closed with an inexpensive configuration. Further, the cam 118 has a cutting up / down detection action, and the cam 118 is disposed in the vicinity of the vertical rotation shaft 116 a of the cutting device 6. Further, since the operation wire 107 and the like are also arranged in the vicinity of the rotating shaft 116a above the cutting suspension base 115, the vertical movement of the cutting device 6 can be laid out in a compact manner without causing any trouble with the conveying culm. In addition, there is no accumulation of mud or the like even during wetland work.

Further, since the second dust exhaust port 103 is opened and closed by using the cam 118 acting in conjunction with the vertical movement of the reaping device 6, the shutter 100 immediately starts to close when the reaping device 6 rises to a predetermined height. Therefore, the effect of reducing the loss of straw discharged at the corner of the field is good.
In addition, since the installation portion of the cam 118 is provided in the vicinity of the vertical rotation shaft 116a of the reaping device 6, the cam 118 can be configured in a compact manner. There is no hindrance to installation, etc., and there is no risk of malfunction due to catching of cereals on the cereal supply / conveying section, muddy water of wet fields, and the like.

  As shown in the partial enlarged side view of the dust disposal chamber 68 and the waste disposal chamber 82 in FIG. 10, the shutter 100 is further enlarged not only when the second dust outlet 103 is opened but also when the swing shelf 51 is attached or detached. Switchable to open maintenance state. For this reason, it is easy to attach and detach the swing shelf 51, and the maintenance performance including the cleaning of the swing shelf 51 and its surroundings is improved.

  In addition, when the harvested material is a wet material or a high yield, the shutter 100 can be opened largely, and the work such as clogging of the object to be processed on the swing shelf 51 can be prevented.

  In the rear view of the threshing device 15, the shutter 100 has the first dust outlet 102 and the second dust outlet 15 so as to give resistance to the workpieces discharged from the first dust outlet 102 and the second dust outlet 103. It is provided so as to cover the installation range of the dust outlet 103.

  Further, the shutter 100 may be capable of changing and fixing the opening / closing angle. For example, when the layer thickness of the processing object such as the rice cake on the swing shelf 51 is small, the opening / closing angle is reduced in order to prevent the recovery loss of the third grain, and conversely the layer of the processing object on the swing shelf 51 When the thickness is thick, the opening / closing angle is increased, and not only the layer thickness of the object to be processed on the swing shelf 51, but also according to the amount of processing of the whole cereal and the state of the field (dry, moisture, etc.) What is necessary is just to enable it to change suitably.

  The second dust exhaust port 103 and the shutter 100 for opening and closing the second dust exhaust port 103 are provided so as to overlap the dust exhausting cylinder 71 in the rear view of the threshing device 15, and when the shutter 100 is closed, the dust exhausting processing chamber is provided. The dust exhaust that has reached the rear end side of 68 flows in the direction of arrow P (FIG. 6) by the suction air of the suction fan 91 at the position facing the dust exhaust processing chamber 68 with the handling cylinder 69 interposed therebetween, and the shutter 100. It passes over the front Strollac 62 and is discharged out of the threshing device 15 through the third dust outlet 92 below the suction fan 91.

  When the shutter 100 is opened, the material to be processed that is not filtered from the mesh of the chaff sheaves 53 and 54 and the Strollac 62 due to the sawdust transferred rearward on the swing shelf 51 is discharged from the second dust outlet 103. The dust exhaust that has reached the rear end side of the dust processing chamber 68 is also slightly discharged from the mesh of the receiving net (lattice) 76 in the middle of the flow path before being discharged from the first dust outlet 102.

  However, when the shutter 100 is closed, the first dust outlet 102, the second dust outlet 103, and the shutter 100 are overlapped when viewed from the rear, so that the shutter 100 discharges from the second dust outlet 103. In order to provide resistance not only to the object to be processed but also to the object to be processed that reaches the rear end side of the dust processing chamber 68 and is discharged from the first dust outlet 102, The discharged object to be processed and the discharged dust reaching the rear end side of the dust removal processing chamber 68 are suppressed from being discharged to the outside of the threshing device 15, that is, not easily discharged.

When the layer thickness of the processed material such as the rice cake on the swing shelf 51 is reduced after the harvesting of the rice cake vegetated on the farm field, the third kernel is blown out together with the rice cake waste by the air blown by the rice cake 79. However, the third grain recovery loss is reduced by closing the shutter 100 of the second dust outlet 103.
For example, when cutting one side of the field and turning to the next side, if the shutter 100 is closed, in addition to the sawdust containing grains on the swing shelf 51, the dust is discharged from the end side of the dust removal cylinder 71. It is possible to stop the discharge by giving resistance to the flow of discharged dust.

  Therefore, the swinging shelf until the dust discharged from the conveying terminal end side of the dust exhausting cylinder 71 is guided to the suction fan 91 facing the dust exhausting cylinder 71 and is discharged from the first dust outlet 102. The stagnation on the swing shelf 51 and the suction fan 91 can be used to sort on the swing shelf 51, so that stabbed grains, keys and the like in the dust can be easily collected.

  Even when the shutter 100 is open, the object to be processed discharged from the conveyance end of the object to be processed in the dust removal processing cylinder 71 is selected on the swing shelf 51 until it is guided to the suction fan 91. However, especially when the shutter 100 is closed, this sorting and recovery effect is also enhanced, so that the recovery loss of the third grain can be reduced, improving the recovery efficiency of the grain and increasing the efficiency of the harvesting and threshing operation. be able to.

  Further, when the shutter 100 of the second dust discharge port 103 is opened, the shutter 100 may be provided along the lower surface of the cutting rod guide 96 below the cutting rod guide 96 of the discharge cutters 81a and 81b. That is, as shown in FIG. 3, when the shutter 100 is opened, the plane portion of the shutter 100 and the plane portion of the cutting rod guide 96 are parallel.

  The waste that has been cut by entering the waste cutters 81a and 81b from above the waste treatment chamber 82 flows in the direction of the arrow Q (FIG. 3) and easily enters the direction of the swing shelf 51. When the cocoons cut in this way fall from the second shelf 85 to the second spiral 86, the grain sorting performance deteriorates.

  However, by adopting this configuration, by providing the shutter 100 along the lower surface of the cutting rod guide 96 below the cutting rod guide 96 of the discharging rod cutters 81a and 81b, the cut waste discharged when the shutter 100 is opened. Even if dredging or mud falls from the cutting dredge guide 96, it slides down the upper surface of the shutter 100 downward and is guided to the waste disposal chamber 82 side to prevent it from entering the swing shelf 51. . In addition, it is possible to prevent the mud and the like adhering to the cutting slag and the waste scum from accumulating on the shutter 100 so that the shutter 100 is not hindered from being opened, and further, as long as it does not hit the cutting slag guide 96. As long as the opening angle of the second dust outlet 103 can be increased.

  Further, as shown in FIG. 3, an air split portion 105 is provided on the air path of the selected wind from the Karatsu 79, and the upper wind path A and the lower air path are sent by the air split section 105. Divided into B. As shown in FIG. 3, the air dividing portion 105 has a side sectional shape in which the air dividing portion upper surface 105 a is straight and 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 formed. It has an inverted chevron shape (inverted triangular shape) that is bent upward and connected to the upper surface 105a.

  The wind split portion of the conventional threshing device has a mountain shape (triangular shape) in the side cross section, but in the case of a mountain shape, the selected wind in the upper air passage A crosses the mountain shape and then follows the mountain shape. Therefore, the sorting air flows downward and merges with the sorting air flowing upward from the lower air passage B, so that the sorting air is difficult to blow upward. In addition, if the sorting wind going upward from the lower air passage returns to the upper front side along the mountain shape of the air split section and merges with the sorting wind from the upper air passage, it becomes an obstacle to the wind flow going upward from the upper air passage. The wind is less likely to blow up.

  Therefore, there is a problem that the sorting wind of the Karatsu 79 is difficult to escape through the sorting net 63 on the lower surface of the swing shelf 51 in the wind division part of the conventional threshing device. In addition, a turbulent region is likely to occur on the rear surface (backward) of the wind dividing portion. That is, a loss occurs in the sorting wind from the Karatsumi 79 upward to the sorting chamber 50, and the sorting wind does not act effectively.

  However, by adopting this configuration, the selected air in the lower air passage B flows from the lower portion to the rear upper portion of the selected air flowing toward the rear of the upper air passage A, so that the selected air in the upper air passage A is blown. Since the sorting winds directed upward of the lower air passage B along the direction come to merge, the sorting winds blow up along the rearward upward slope of the air splitting section upper surface 105a, and the blown-up winds flow upward. Easier to escape. That is, it is possible to effectively use the sorting air from the Karatsumi 79 toward the top of the sorting chamber 50. Therefore, the air blowing sorting capability in the front portion of the swing shelf 51 is improved, leading to an improvement in sorting processing efficiency and sorting performance.

  Further, it is preferable that the rear end portion of the sorting net 63 is positioned on an extension line (dotted line T) of the upper surface 105a of the air dividing portion 105. By adopting this configuration, it is possible to blow the upwardly selecting air from the upper air passage A so as to escape from the lower side of the selecting screen 63 along the dotted line T (FIG. 3). Therefore, it becomes easy for the sorting air to hit the object to be filtered from between the chaff sheaves 53, 54, thereby improving the air blowing of the object to be processed and promoting the filtration of the object to be processed. It leads to reduction.

  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. It is a top view of the sorting room of the combine of FIG. It is a rear view of the threshing apparatus of the combine of FIG. FIG. 2 is a partially enlarged side view of the dust disposal chamber and the waste disposal chamber of the combine of FIG. 1. It is a right view of the up-and-down drive part of the harvesting device of the combine of FIG. It is an arrow view from the arrow S direction of FIG. FIG. 2 is a partially enlarged side view of the dust removal treatment chamber and the waste treatment chamber of the combine of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Combine 2 Traveling frame 3 Traveling device 4 Crawler 6 Mowing device 7 Dividing tool 8 Grain raising device 9 Conveying device 14 Feed chain 15 Threshing device 15a Rear wall 18 Vertical auger 19 Horizontal auger 20 Pilot seat 30 Glen tank 50 Sorting room 51 Oscillating 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 Recovery chamber 67 Second processing chamber 68 Dust processing chamber 68a Exhaust Dust processing chamber inlet 68b Rear end 69 of dust removal processing chamber 69 Cylinder 69a Teeth 70 No. 2 processing cylinder 70a Treatment teeth
71 Dust exhausting cylinder 71a Processing teeth 71b Spiral 72 Dust exhausting cylinder frame 72a Dust processing cylinder frame rear end 74 Handling net 76 Receiving net 79 Kara 79a Kara fan 80a Exhaust chain 80b Exhaust tip chain 81a, 81b Exhaust Cutter 82 Waste disposal chamber 83 Dust removal chamber 85 Second shelf board 86 Second spiral 87 Second lifting cylinder 87a Second lifting cylinder spiral 88 Diffusion guide 91 Suction fan 92 Third dust outlet 95 Spring 96 Cutting rod guide 97 Front plate 98 Rear plate 100 Shutter (plate body) 101 Communication port 102 First dust outlet 103 Second dust outlet 105 Air divider 107 Operation wire 111 Opening and closing arm 110 Opening and closing shaft 114 Suspension metal 115 Mowing suspension stand 116 Cutting support Arm 116a Rotating shaft 117 Mowing upper and lower hydraulic cylinder 118 Cam 119 Roller 121 Rotating arm 121a Rotating fulcrum

Claims (2)

A handling chamber (66) for threshing the harvested cereal with a handling cylinder (69);
A dust removal treatment chamber (71) provided on the rear side of the treatment chamber (66) is pivoted on a dust removal treatment cylinder (71) that takes over and treats the workpiece that has reached the end in the conveyance direction of the treatment chamber (66). 68)
Provided below the handling chamber (66) and the dust removal processing chamber (68), and swinging and sorting the workpieces falling from the handling chamber (66) and the dust disposal processing chamber (68) while transporting them backward. A sorting chamber (50) having a swing shelf (51);
A dust discharge chamber (83) provided on the side of the dust discharge processing chamber (68) and above the swing shelf (51) and having a suction fan (91) for sucking and discharging the dust to the outside.
In a threshing device (15) with
The dust exhausting chamber (68) has a first dust exhaust port (102) for discharging the object that has reached the rear end of the dust exhausting chamber (68) from the dust exhausting chamber (68) to the outside. Provided,
The sorting chamber (50) is provided with a second dust exhaust port (103) for discharging the workpiece that has reached the rear end of the swing shelf (51) in the sorting chamber (50) to the outside,
A plate body that opens and closes the outlets of the first dust discharge port (102) and the second dust discharge port (103) to provide resistance to the object to be processed discharged from both the dust discharge ports (102, 103). (100) is provided on the rear wall (15a) of the threshing device (15),
The opening / closing arm (111) for opening and closing the plate (100) supported by the rear wall (15a) of the threshing device (15) is placed at a position behind the rear end of the dust removal chamber (68). A combine threshing device characterized by being provided to extend. An exhaust cutter (81a, 81b) for cutting the soot behind the dust exhaust chamber (83), and a cutting soot guide (96) for guiding the soot cut by the cutter (81a, 81b) downward. A waste disposal chamber (82) having,
The opening / closing shaft (110), which is the pivot point of the opening / closing arm (111) for opening / closing the plate body (100), is placed on the rear wall (15a) of the threshing device (15) and the front part of the waste treatment chamber (82). 2. The combine threshing device according to claim 1, wherein the combine threshing device is provided between the arranged cutting shear guides (96).

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