JP2010029159A - Threshing apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a threshing apparatus enabling threshed object to be smoothly discharged according to the discharge level of the threshed objects such as waste straw to be discharged from an exhaust dust treatment chamber. <P>SOLUTION: The threshing apparatus includes an exhaust dust treatment chamber 68 axially suspended with an exhaust dust treatment cylinder 71 in parallel to a threshing cylinder 69 behind a threshing chamber 66 axially suspended with the threshing cylinder 69 for separating grains from grain culms, a plurality of dust feed plates 72 arranged in parallel inside the ceiling of the threshing chamber 66 and functioning to forcibly guide threshed objects to the exhaust dust treatment chamber 68 side, an operating member 76 capable of simultaneously manually altering the threshed object-guiding directions of all of the dust feed plates 72, and coordination means functioning to open a shutter 78 when the dust feed plates 72 are turned in the direction of promoting the conveyance of threshed objects. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

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

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

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

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

In the sorting room, the object to be processed that has moved on the swing shelf and the object to be dropped from the handling room are filtered and sorted, and branch branches, ears, cocoons, etc. are separated from single grains. Only infarcted grains, spiked grains, and broken straw grains are sent to the No. 2 processing chamber, and single grains are sent to the Glen tank. In addition, an object to be processed that is processed in the second processing chamber and contains almost no grain is sent to the dust removal processing chamber, and then cut and discharged to the outside of the machine body.
JP 2003-61448 A JP-A-9-187159

  According to the configuration of the threshing apparatus described in Patent Document 1, the end portion of the dust removal treatment chamber is designed to facilitate the discharge of waste dust and the like discharged from the dust removal treatment chamber and to prevent the grain from being discharged outside the machine body. Is provided with a dust exhaust outlet for discharging the dust exhausted after being processed in the dust exhaust treatment chamber directly to the outside.

  According to the configuration of the threshing device described in Patent Document 2, the shutter that opens and closes the opening of the swing shelf end portion is prevented so that the object to be processed is not discharged from the swing shelf end to the outside of the body unreasonably when the direction of the body is changed. The shutter is closed so that the object to be processed is not discharged from the end of the swing rack to the outside of the machine body when the direction of the machine body is changed.

  However, the amount of processed material sent from the handling chamber to the dust processing chamber increases, and the amount of processed material leaked and discharged from the dust processing chamber onto the swing shelf has increased. When the shutter is closed, there is a problem that sorting is hindered by a large amount of sawdust, and sorting failure or clogging on the sorting shelf is likely to occur.

The above problem can be solved by the following solution means.
In other words, a dust removal treatment chamber (68) in which a dust removal treatment cylinder (71) is pivoted in a direction parallel to the treatment drum (69) is provided behind the treatment chamber (66) in which the treatment drum (69) is pivoted. In the threshing apparatus, a dust feeding plate (72) that guides the object to be processed in the handling chamber (66) to the rear side and guides it to the dust disposal chamber (68) side inside the ceiling portion of the handling chamber (66). ) Are arranged in parallel, and an operation member (76) that can manually change the posture of all dust feeding plates (72) on the side that promotes the transfer of the object to be processed and the side that resists the transfer is provided. A shutter (78) for opening and closing the discharge port portion toward the outside of the threshing device is provided at the discharge port portion at the rear end of the dust processing chamber (68), and the dust feeding plate (72) is operated by operating the operation member (76). A threshing device provided with a connecting means for opening the shutter (78) when the posture is changed to the transfer promoting side A.

  According to the present invention, when the plurality of dust sending plates 72 arranged in parallel by the operation of the operation member 76 are changed in posture to the transfer promoting side, the shutter 78 is opened and the dust in the dust processing chamber 68 is moved back. The amount of swarf discharged from the discharge port at the end and falling onto the swing shelf is reduced, and it is possible to prevent the occurrence of poor sorting and the occurrence of clogging on the swing shelf. Moreover, when the posture of the dust feeding plate 72 is changed to the side where resistance is applied to the transfer, it is possible to prevent the grain from being discharged from the dust processing chamber 68 by closing the shutter 78, and generation of a harvest loss. Can be prevented.

  Embodiments of the present invention will be described with reference to the drawings. FIG. 1 is a left side view of a combine that performs a grain harvesting operation according to an embodiment of the present invention, and FIG. 2 is a plan view of the combine of FIG. 1 (illustrated without a cockpit frame). 3 shows a partial cross-sectional view of the left side of the combine threshing device of FIG. 1, FIG. 4 shows a partially cutaway plan view of the combine threshing device of FIG. 1, and FIG. 5 shows the combine threshing device of FIG. The rear view of a threshing apparatus is shown. In this specification, the forward direction of the combine 1 is referred to as the front, the reverse direction as the rear, and the left and right directions toward the forward direction as left and right, respectively.

  1 to 5 has a pair of left and right crawlers 4 formed of a flexible material such as rubber and formed into an endless belt, and is used not only in dry fields but also in wet fields. 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, an engine (not shown), and threshing on the traveling frame 2. The device 15, 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 arranged at the lower front end of the reaping device 6, the culm 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 start end portion of the feed chain 14 of the threshing device 15, the front conveying device, the handling depth adjusting device, the supply conveying device, etc. (not shown) can be successively transferred and adjusted in the cereal. Are arranged as follows.

  The operation of the harvesting device 6 of the combine 1 is performed as follows. First, the engine is started, and an operation lever (not shown) for shifting, steering, etc. is operated so that the combine 1 moves forward, and a cutting / threshing clutch (not shown) is turned on to rotate the aircraft. When the traveling frame 2 travels forward while transmitting each part, 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 are caused to stand upright if they are in the lying state by the raising action of the culm raising device 8. The stock of the cereal reaches the cutting blade, is cut, is transported to the rear by being scraped into the front transport device, and is successively transferred to the rear upper portion in succession to the handling depth adjusting device and the supply transport device. Is done.

  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 has a handling chamber 66 with a handling cylinder 69 pivoted on the upper side, and a sorting chamber 50 is integrally provided on the lower side of the handling chamber 66 to thresh and sort the supplied harvested cereal meal.

  As will be described in detail later, the cereal mash supplied to the threshing device 15 is inserted into a handling chamber 66 which is a main threshing portion, and a plurality of teeth 69a of a handling drum 69 which is pivoted on the handling chamber 66 and rotated. The threshing is performed by the transfer by the feed chain 14 and the interaction with the handling net 74, and the object to be processed (grains and wastes) is received by the swing shelf 51 of the sorting unit in the threshing device 15, The oscillating shelves 51 are diffused by the gathering plate 88 so as to have a uniform layer thickness in the width direction of the oscillating shelves 51 and are sent to the rear while receiving wind from the fan 79a of the Karatsu 79 and wind power. Grains that have been sorted and have a high specific gravity leak from the sheave 53 and the sorting net 63, flow down on the first shelf 64, and incorporate the conveying spiral 65 b (FIG. 5) from the first spiral 65 a. It is conveyed to the Glen tank 30 through the beating grain cylinder 65, and is one in the Glen tank 30. It is stored.

  The remaining threshed culm that has reached the end of the handling chamber 66 of the threshing device 15 and is kept in a long length is sandwiched and transported between the culling chain 80 and a culling head chain (not shown). After being put into the cutters 81a and 81b (FIGS. 3 and 4) in the rear waste disposal chamber 95, it is cut and released to the field.

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

  The grain husks harvested by the reaping device 6 are adjusted in the handling depth by the cereal conveyance and adjusting device attached to the reaping device 6 and inserted into the handling chamber 66 which is the main threshing portion of the threshing device 15. A handling cylinder 69 pivoted in the handling chamber 66 has a large number of teeth 69a on its surface, and the power from the engine is a transmission mechanism in the handling cylinder / processing cylinder input gear case 25 (details will be described later). And is transmitted to the rotation shaft 69b of the handling cylinder 69, and rotates in the direction of arrow B (FIG. 4). The cereal grains with grains inserted in the handling chamber 66 are sandwiched between the moving feed chain 14 and the feed chain nip 12 (FIG. 3), and in the direction of arrow A in FIGS. While being transferred, the threshing occurs due to the interaction between the handle 69a of the handle 69 rotating in the direction of arrow B and the handle 74. 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.

  Further, since the swing shelf 51 swings in the vertical and forward / backward directions by the operation of the swing shelf driving mechanism, the object to be processed is moved in the direction of arrow D (FIG. 3) and the specific gravity leaked onto the transfer shelf 52 is increased. The heavy kernel 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 65a to the grain tank 30 via the first lifting cylinder 65. The grains stored in the Glen tank 30 are conveyed to the outside of the combine 1 via the augers 18 and 19.

  As shown in FIGS. 3, 4, etc., the threshing device 15 of the present embodiment includes a dust removal treatment chamber 68 having a dust removal treatment drum 71 having a rotation axis in parallel with the axial direction of the treatment drum 69 in the treatment chamber 66. I have. The dust removal processing chamber 68 is partitioned by a rear wall 66 a of the handling chamber 66, and is disposed on the right side behind the handling chamber 66. The dust removal processing cylinder 71 is driven by power transmitted from the handling cylinder / processing cylinder input gear case 25 through the shaft 40 and the gear case 41.

FIG. 6 shows a plan view (FIG. 6 (a)) and a side view (FIG. 6 (b)) showing the handling chamber and dust removal processing chamber ceiling casing of the combine threshing device of FIG. 1, and FIG. A rear view of the threshing apparatus in an open state (FIG. 7A) and a rear view of the threshing apparatus in a state where the shutter is closed (FIG. 7B) are shown.
Since the handling drum 69 rotates counterclockwise when viewed from the rear, a plurality of dust feeding plates 72 that guide the soot are arranged in parallel so that the soot is discharged to the right rear at the end of the right wall 66b of the handling chamber 66. It arrange | positions and it provides in the back surface side of the ceiling wall 66c of the chamber 66.

  The reason for providing a plurality of dust feeding plates 72 is that if soot generation is increased, noise is generated in the handling chamber 66, and it becomes difficult to adjust dust removal when a large load is applied to the handling chamber 66 due to a large amount of soot. In order to prevent this, the increased amount of dust discharged to the dust processing chamber 68 is quickly sent out.

  Each dust sending plate 72 arranged in parallel is provided with a swinging fulcrum 72a supported by the ceiling wall 66c at an intermediate portion from the right end thereof. Further, the right end portion of each dust sending plate 72 is rotatably connected to a common rod 73 at a fulcrum 73a. Then, the tip of the dust control lever 76 is fixed to the dust sending plate 72 in the front row, and the other end 76a of the dust control lever 76 is manually operated, or a wire 77 is connected to the middle portion of the lever 76. When the lever 76 is moved in the direction of the arrow G1 by pushing and pulling the wire 77, all the dust feeding plates 72 are moved in the direction of the arrow G2 at the same time, and the waste is guided toward the dust processing chamber 68. It is.

  At this time, as shown in the rear view of the threshing device 15 in FIG. 7A, a shutter 78 that drives the motor 75 in conjunction with the movement of the wire 77 or the lever 76 to close the rear end discharge portion of the dust removal processing chamber 68. Is opened so that the waste is easily discharged from the dust removal processing chamber 68. With such a configuration, it is possible to easily adjust the dust discharge when a high load is applied, and it is easy to adjust the dust discharge amount.

  On the other hand, when there is not a large amount of sawdust, when the wire 77 or lever 76 shown in FIG. 6A is moved in the direction of the arrow H1, all the dust-feeding plates 72 are simultaneously moved in the direction of the arrow H2 around the fulcrum 72a. As shown in the rear view of the threshing device 7 (b), the shutter 78 moves in the closing direction, and the dust discharge outlet (discharge port) of the dust removal processing chamber 68 is closed.

  Further, if a limit switch 82 is provided on the lever 76 that is manually or interlocked with the movement of the wire 77, and the motor 75 and the lever 76 that are operated when the limit switch 82 is "on" are interlocked, the dust feeding plate 72 described above. And the drive control of the shutter 78 can be easily performed. This is called a linking means.

  As shown in the enlarged plan view of the dust discharge adjusting lever 76 in FIG. 8, a plate material 83 is provided in a direction orthogonal to the lever 76. The lever 76 can be engaged with a recess formed in the upper portion of the plate member 83 to fix the adjustment position of the lever 76. A large number of recesses are provided, and the position of the lever 76 can be adjusted in multiple stages. In FIG. 8, the movement range of the lever 76 when the dust control lever 76 is moved in the arrow G1 direction is such that the limit switch 82 can be distinguished from the standard position and the other positions (= the positions deviated from the standard position). A configuration example when arranged is shown.

  As shown in the rear view of FIG. 5, the upper half of the casing (outer frame body of the dust processing chamber 68) 68a of the dust processing cylinder 71 is cylindrical, and the lower half of the casing 68a is net. Further, as shown in FIG. 4, a dust removal treatment chamber 68 at the rear is disposed at the end portion of the handling drum 69 so that the dust removal treatment product from the treatment chamber 66 can be sent to the outlet opening of the treatment chamber rear wall 66a. Are provided with blades 69c for guiding the dust-removed material. A plurality of guides 84 (FIG. 4) are provided at the connecting portion from the handling chamber 66 to the dust removal processing chamber 68.

  A plurality of guides 84 are installed on the outer periphery of the rear end portion of the handling cylinder 69 at equal intervals, and the rotation shaft 69 b of the handling cylinder 69 is guided so as to guide the dust disposal product from the handling chamber 66 to the dust disposal chamber 68. Since it is arranged so as to be inclined with respect to the axial direction, dust and the like can be smoothly fed into the dust removal processing chamber 68.

  Further, since the end portion of the dust exhausting cylinder 71 extends to the side of the air suction port of the cross-flow fan 91, the waste discharged from the rear end of the dust exhausting cylinder 71 to the swing shelf 51. Since it is sucked by the crossflow fan 91 and discharged to the outside without being mounted, the sortability of the object to be processed is improved as compared with the prior art.

  Furthermore, by providing a plurality of blades 71b (see FIG. 4) at equal intervals on the outer periphery of the end portion of the dust removal processing cylinder 71, the waste dust is guided to the duct 94 that is discharged to the outside by the crossflow fan 91. . In this way, the sorting property of the soot discharged | emitted from the dust removal processing chamber 68 becomes better than before.

  Further, since a plurality of rows of jump racks 96 are provided below the plurality of blades 71 b provided on the outer periphery of the terminal end portion of the dust removal processing cylinder 71 and above the stroller 62, the jump racks 96 are shaken. Since sawdust no longer falls on the moving shelf 51, the flow of the wind is not hindered, and the sortability of the object to be processed is improved as compared with the prior art.

  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, but the swing shelf 51 is disposed below the handling net 74 in the handling chamber 66. It comprises a transfer shelf 52 having a plurality of triangular sorting plates 52a, an upper sheave 53 arranged behind it, a sorting net 63 below it, and a stroll rack 62 arranged at the rearmost end.

  The grain that has been threshed in the early stage of threshing that leaks in about 1/3 of the area in front of the handling net 74 is a single grain and does not contain impurities, so there is no need for coarse sorting on the sieve 53 shown in FIG. In addition, it is possible to perform wind selection with the direct selection net 63 by blowing air from the Kara 79, lightening the load on the sheave 53, and enabling efficient threshing. From the Karatsumi 79, the air dividing part 105 is provided in the air flow path, the air is divided by the air dividing part 105, and the air volume is adjusted at the divided upper and lower sides.

  Among the objects to be processed on the swing shelf 51, the lighter 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 in the direction of arrow D from the transfer shelf 52 toward the sheave 53. The second grain having a small size on the Strollack 62 leaks in the direction of the arrow G, passes through the second shelf 85, and is collected at the installation part of the second spiral 86, and the second reduction. It is conveyed to the tube 87. Lighter ones are discharged out of the machine in the direction of arrow F by a cross flow fan 91.

  The Strollac 62 attached to the swing shelf 51 has a configuration in which a base portion on the front side is attached to the rear side of the swing shelf 51 and the rear side of the Strollack 62 is a free end. Then, the objects to be processed that have leaked from the Strollac 62 are collected on the second shelf 85 side and conveyed to the second return cylinder 87 by the second spiral 86 (FIG. 3).

  As shown in FIG. 9A, when the seal member 97 of the swing shelf 51 in contact with the wall surface of the second shelf plate 85 behind the second spiral 86 is shifted and attached to the rear side, the seal member 97 is attached. Can be mounted backwards. In this way, the attachment position of the seal member 97 to the swing shelf 51 is behind the upper end portion of the second shelf 85, and there is a gap between the upper end of the second shelf 85 and the seal member. Can be configured so that there is no.

  Conventionally, as shown in FIG. 9B, since the seal member 97 of the swing shelf 51 is attached directly below, the seal member 97 and the upper end of the second shelf 85 are moved when the swing shelf 51 swings. There was a case where a gap was formed between the seal member 97 and the seal member 97 floated. This is because when the swing shelf 51 swings according to the swing drive centered on the crankshaft 51a, the swing shelf 51 is located near the swing shaft of the swing shelf 51. This is because the rotation is substantially more, so that a gap is formed between the position of the upper end of the second shelf 85 and the seal member 97, and there is a possibility that the second thing leaks outside from this gap.

  However, as shown in FIG. 9 (a), a bent auxiliary plate 98 (see FIG. 9A) is attached to the seal member 97 of the swing shelf 51 in contact with the wall surface of the second shelf plate 85 behind the second spiral 86. Since the seal member 97 can be attached to the rear side so as to press against the wall surface of the second shelf 85, the seal member 97 and the second shelf 85 can be placed at any position. Since there is no gap between them, the workpieces will not leak.

  Further, in the reference example, as shown in the side view of FIG. 10A and the front view of FIG. 10B, two in front of the dust removal treatment cylinder 71 and coaxially with the rotation axis of the dust removal treatment cylinder 71. A threshing device having a number processing cylinder 70 is provided.

  In the threshing apparatus in this case, among the objects to be processed that have reached the terminal end of the object to be processed in the handling chamber 66, short objects such as sawdust are connected to the handling chamber 66 and the dust disposal chamber 68 (not shown). It enters the dust removal processing chamber 68 through the mouth, and is processed while being conveyed in the direction of the arrow K by the spiral 71 a of the dust collection processing cylinder 71 that rotates.

  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 (not shown) onto the swing shelf 51. Then, it is guided to the Strollac 62 and sent from the second shelf 85 to the second processing chamber 67 through the second lifting cylinder 87 and processed by the processing teeth 70 a of the second processing cylinder 70. The second processing cylinder 70 and the dust removal processing cylinder 71 on the same axis are driven by a driving force from the engine via a pulley.

  As shown in the left side view of the threshing device in FIG. 10A, a cross flow fan 91 is provided at the rear of the threshing device 15, and the specific gravity of the dust generated in the threshing device 15 including the dust processing chamber 68 is specific gravity. The air containing the small wastes, branches, and dust is sucked by the air blown by the rotation of the cross flow fan 91, blown out in the direction of arrow L from the outlet of the cross flow fan, and discharged to the outside of the combine 1.

  Among the dust that has fallen from the dust removal processing chamber 68 to the end of the swing shelf 51 as indicated by the arrow M, those having a small diameter and heavy specific gravity such as second and third grains are the end of the swing shelf 51. The Strollac 62 or the sheave 53 passes through the second shelf 85 after passing in the direction of the arrow G and is processed again in the second processing chamber 67.

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

  As shown in the front view of the threshing apparatus of FIG. 10B, the receiving net 74 of the handling chamber 66 is divided into three parts, and the two receiving nets 74a and 74b below the axis 69a of the handling cylinder 69 are A crimp net (a net knitted with a round wire) is used, and a receiving net 74c above the handle shaft center 69a is a grid-like filter member (grate net).

Since the receiving net 74c is constituted by a lattice network, the object to be processed easily passes through the receiving net 74c. By using the receiving net 74c constituted by the lattice net, the receiving net 74 divided into three parts is used from the handling chamber 66. The filtration rate of the object to be processed is increased, and the proportion of the third scattered matter (the object to be discharged from the end of the swing shelf 51) is reduced as compared with the case where the receiving net 74 is configured only by the crimp net. To do.
The receiving nets 74a and 74b of the above-described crimp net portion which is easy to pierce the sawdust are made detachable, and the receiving net 74c of the lattice net portion which is hard to pierce the sawdust is fixed to the machine body. To do.
Further, as shown in FIG. 11, by fixing the receiving net 74c to the cutting edge mounting frame 101 to which the cutting edge 100 is attached, the strength of the grid net can be maintained even if the grid net has a simple configuration.

  Further, when the mesh size of the lattice net 74c is made larger than that of the crimp nets 74a and 74b, the filtration rate of the object to be processed from the handling chamber 66 to the second processing chamber 67 is increased, and the third scattering is reduced. Leads to.

  In addition, the degree of the crimp net (bottom) of the receiving net 74a on the inlet side of the grain basket to the handling chamber 66 among the crimp nets of the two receiving nets 74a and 74b below the rotating shaft 69b of the handling cylinder 69 If the mesh size of the crimp network (medium) of the receiving network 74b on the grid network side is made larger, and the mesh size of the grid network of the receiving network 74c is made larger than that of the crimp network (medium) of the receiving network 74b on the grid network side. The filtration rate of the object to be processed from the handling chamber 66 is increased, leading to a decrease in the number 3 scattering.

  As shown in the plan view of the handling chamber 66 in FIG. 11, partition members 103 and 104 made of plates that form arcs in the circumferential direction of the handling cylinder 69 are provided at the lattice mesh attachment portion of the handling chamber 66. The partition members 103 and 104 give resistance to the bag being sent backward by the handling cylinder 69 to facilitate sending it to the second processing chamber 67, thereby increasing the filtration rate of the object to be processed from the handling chamber 66. However, it leads to the decrease of No. 3 scattering.

  Further, the mesh from the first partition member 103 to the second partition member 104 is made larger than the mesh of the grid from the front side of the handling chamber 66 to the first partition member 103, and the first partition member 103 to the second partition The mesh size of the lattice mesh behind the second partition member 104 is made larger than the mesh size of the lattice mesh up to the member 104. This is because the size of the object to be processed in the handling chamber 66 is larger toward the rear side, and the mesh of the lattice mesh is increased toward the rear side of the handling chamber 66, so It is possible to increase the filtration rate and suppress the generation of the third scattered matter.

  By configuring the vertical member 74c1 of the lattice net 74c to be fixed and allowing the horizontal member of the lattice to be inserted from the rear side of the handling chamber 66, the lateral member 74c2 that easily wears the lattice net 74c can be easily replaced. Further, the use of the rear wall (inner side plate) 66a as a retaining member for the cross member 74c2 of the lattice eliminates the need for a separate retaining member, thereby reducing the cost.

  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 left side sectional drawing of the threshing apparatus of the combine of FIG. It is a partially notched top view of the combine threshing apparatus of FIG. It is a partially cutaway rear view of the combine threshing apparatus of FIG. It is a top view (Drawing 6 (a)) and a side view (Drawing 6 (b)) which show the handling room and dust removal processing room ceiling part casing of the combine threshing device of Drawing 1. FIG. 7 is a rear view when the shutter of the combine threshing apparatus of FIG. 1 is opened (FIG. 7A) and a rear view when the shutter is closed (FIG. 7B). It is a partially expanded plan view of the handling room ceiling part of FIG. FIG. 9 is a side view in the vicinity of the second spiral of the threshing apparatus in FIG. 3 (FIG. 9A) and a side view in the vicinity of the second spiral of the conventional threshing apparatus (FIG. 9B). It is the left side sectional view (Drawing 10 (a)) of the threshing device of the reference example of the combine of Drawing 1, and a part notched front view. It is a top view which shows the structure of the receiving net of the handling room of the threshing apparatus of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Combine 2 Traveling frame 3 Traveling device 4 Crawler 6 Mowing device 7 Weeding tool 8 Grain raising device 12 Feed chain pincer 14 Feed chain 15 Threshing device 18 Vertical auger 19 Horizontal auger 19a Auger outlet 20 Control seat 25 Handling cylinder・ Processing cylinder input gear case 30 Glen tank 40 Shaft 41 Gear case 50 Sorting chamber 51 Oscillating shelf 52 Transfer shelf 52a Sorting plate 53 Sheave 62 Strollac 63 Sorting net 64 First shelf 65 65 First harvesting cylinder 65a First spiral 65b Conveying spiral 65e Supporting part 66 Handling chamber 66a Rear wall 66b Right side wall 66c Ceiling wall 67 Second processing chamber 68 Dust processing chamber 68a Dust processing cylinder casing 69 Handling cylinder 69a Teeth 69b Rotating shaft 70 Second processing cylinder 69c Blade 70a Processing teeth 71 Dust removal processing cylinder 71a Spiral 71b Blade 72 Dust feeding plate 72 a swinging fulcrum 73 rod 73a fulcrum 74 handling net 74a, 74b crimp net 74c grid net 74c1 vertical member 74c2 horizontal member 75 motor 76 dust control lever 77 wire 78 shutter 79 tang 79a tang fan 80 evacuation chain 81 evacuation cutter 82 Limit switch 83 Plate material 84 Guide 85 Second shelf plate 86 Second spiral 87 Second reduction cylinder 88 Shift plate 91 Cross flow fan 95 Waste disposal chamber 94 Duct 96 Jump rack 97 Seal member 98 Auxiliary plate 100 Cutting blade 101 Cutting blade installation Frame 103, 104 Partition member 105 Air division

Claims (1)

Threshing provided with a dust removal treatment chamber (68) having a dust removal treatment drum (71) pivoted in a direction parallel to the treatment drum (69) behind the treatment chamber (66) pivoting the treatment drum (69). In the device
A plurality of dust sending plates (72) are arranged in parallel on the inner side of the ceiling of the chamber (66) to guide the workpieces in the chamber (66) to the rear and guide them to the dust disposal chamber (68). And arranging an operation member (76) capable of manually changing the posture of all dust sending plates (72) on the side for promoting the transfer of the object to be processed and the side for applying resistance to the transfer,
A shutter (78) that opens and closes the discharge port portion toward the outside of the threshing device is provided at the discharge port portion at the rear end of the dust removal processing chamber (68),
A threshing apparatus comprising a connecting means for opening the shutter (78) when the posture of the dust feeding plate (72) is changed to the transfer promoting side by the operation of the operation member (76).

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