JP2005218309A - Threshing apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a threshing apparatus for raising separation performances for grains from other materials to be treated such as waste straws more than those of the conventional threshing apparatus. <P>SOLUTION: This threshing apparatus 15 is equipped with a threshing chamber 66 in which a threshing cylinder 69 for separating the grains from grain culms is axially installed in the apparatus 15, a waste dust treating chamber 68 in which a waste dust treating cylinder 71 for treating waste dust treatment materials separated from the grains after threshing is axially installed in a position at the rear of the threshing chamber 66 and a shaking separation shelf 51 for separating the grains from the materials to be treated under the threshing chamber 66 and the waste dust treating chamber 68. The waste dust treating cylinder 71 is arranged in the upper part on one side of the shaking separation shelf 51 and a suction fan 92 is arranged in the upper part on the other side of the shaking separation shelf 51. Thereby, since most of the waste dust materials such as lightweight waste straws in the materials to be treated from the threshing chamber 66 are sucked and discharged toward the outside of the threshing apparatus with the suction fan 92, the amount of the waste dust materials dropped onto the shaking separation shelf 51 is relatively reduced and the separation performances of the grains from the waste straws, and the like, on the shaking separation shelf 51 are improved from those of the conventional threshing apparatus. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

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

  The combine is equipped with an engine, and the power generated by the engine is used for running, harvesting, and threshing of the combine, but the cereals harvested by the harvesting device are sent to the threshing device and threshed and then temporarily stored in the Glen tank. It is stored in. The grains stored in the Glen tank are discharged from the auger to a truck.

In a conventional threshing apparatus, the threshed material is separated from other processed materials such as grain and waste using a swing sorting shelf, etc., but the higher the separation performance, the higher the threshing performance is. can get. Conventionally, many devices have been devised for improving the separation performance of other objects to be processed such as grains and waste.
Japanese Patent Laid-Open No. 11-56085

As described above, the threshing apparatus has conventionally been devised for improving the separation performance of the other processed materials such as the grain and the waste, but has not achieved a sufficiently satisfactory separation performance. .
The subject of this invention is also providing the threshing apparatus for improving the isolation | separation performance of other to-be-processed objects, such as a grain and a waste, more than before.

  The invention described in claim 1 is a handling chamber 66 in which a handling drum 69 for separating the kernel from the cereal is pivoted, and a dust exhausted product selected from the grain after threshing at a rear position of the handling chamber 66. A dust removal processing chamber 68 is provided with a dust removal processing cylinder 71 as an axis, and a swing sorting shelf 51 for sorting grains from the object to be processed is provided below the handling chamber 66 and the dust removal processing chamber 68. In the threshing apparatus provided with the sorting chamber 50, a dust disposal cylinder 71 is disposed above one side of the swing sorting shelf 51 of the sorting chamber 50, and a suction fan 92 is disposed above the other side of the swing sorting shelf 51. It is the arranged threshing device.

  A second aspect of the present invention is the threshing apparatus according to the first aspect, wherein a plurality of the suction fans 92 are arranged.

  The invention according to claim 3 is the threshing apparatus according to claim 1 or 2, wherein only one suction air outlet 93a of the plurality of suction fans 92 is provided.

  According to a fourth aspect of the present invention, the suction force of the suction fan 92b disposed at a position near the duct outlet 93a for suction air among the plurality of suction fans 92 is disposed at a position far from the duct outlet 93a for suction air. The threshing device 15 according to any one of claims 1 to 3, wherein the threshing device 15 is larger than the suction force of the suction fan 92a.

  According to the first aspect of the present invention, most of the dusts such as lightweight wastes in the object to be processed from the handling chamber 66 are sucked and discharged by the suction fan 92 toward the outside of the threshing device 15. The amount of dust that falls on the swing sorting shelf 51 is relatively reduced, and the sorting performance of the grains and the waste on the swing sorting shelf 51 is improved.

  According to the second aspect of the invention, in addition to the effect of the first aspect of the invention, after the lightweight dusty waste in the workpiece is sucked from the dust removal processing chamber 68 toward the suction fan 92 side. The threshing device 15 is discharged by the suction force of the suction fan 92. At this time, the object to be processed moves on the swing sorting shelf 51. During that time, stabbed grains and the like in the object to be processed are collected, and the grains are wastefully discharged outside while being mixed in the dust. There is nothing.

  According to the third aspect of the present invention, since only one duct outlet 93a for suction air of the plurality of suction fans 92 is provided, the apparatus can be made compact, and dust can be discharged to the rear of the machine body. Dust does not fall on the surface.

  According to the fourth aspect of the present invention, the suction force of the suction fan 92b on the side closer to the suction duct outlet 93a side is larger than the suction force of the suction fan 92a on the side farther from the duct outlet 93a. Even if the discharged dust is sent to the fan 92b, the fan 92b is not clogged, so that the suction efficiency of the dust is improved.

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, FIG. 2 is a side sectional view of the combine threshing apparatus, and FIG. 3 is a plan sectional view of the combine threshing apparatus. FIG. 4 shows a sectional view of the combine threshing device and the Glen tank.

  1 has a pair of left and right crawlers 4 made of a flexible material such as rubber and formed into an endless belt shape. The crawlers 4 are slightly used not only in dry fields but also in wet fields. A traveling device 3 configured to be able to travel freely just by sinking is provided, a cutting device 6 is mounted on the front of the traveling frame 2, and an engine (not shown) and a threshing device 15, a cockpit 20 and The Glen tank 30 is 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 front end of the reaping device 6, the cereal raising device having an inclined shape (not shown) is disposed behind it, and the cutting blade is disposed 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 combine harvester 6 is performed as follows. First, the engine is started and the operation levers 5 for shifting, steering, etc. are operated so that the combine moves forward, and the cutting and threshing clutch (not shown) is turned on 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 grain culm planted in the field is subjected to weeding action by the weeding tool 7 at the lower front end of the reaping device 6, and then raised to the upright state if it is in the lying state by the raising action of the culm. 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 unit 50 is provided integrally 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 carried out 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 swinging sorting shelf 51 of the sorting unit in the threshing device 15, While moving on the swing sorting shelf 51 that swings in the wind, the wind is sorted by receiving air from the tang 79, and the grains with heavy specific gravity pass through the sheave 53 and the sorting net 63 and are transported from the first spiral 65. It is conveyed to the grain tank 30 through the first cereal cylinder 16 containing a spiral (not shown) and temporarily stored in the grain tank 30.

  The remaining threshed culm that has reached the end of the handling chamber 66 of the threshing device 15 and is kept in a long length is sandwiched and transported between a culling chain and a culling head chain (not shown), and the rear part of the threshing device 15 It is thrown into the paddle cutter and cut and released to the field.

  A grain tank spiral 32 (FIG. 4) for transferring grains is provided at the bottom of the grain tank 30, and a discharge auger comprising a vertical auger 18 and a horizontal auger 19 on a spiral drive shaft (not shown) for driving the grain tank spiral 32. And the grains stored in the Glen tank 30 are discharged from the discharge auger outlet to the outside of the combine. The glen tank spiral 32, vertical auger spiral (not shown) and horizontal auger spiral (not shown) are driven to rotate by the power of the engine and convey stored grains by the screw conveyor action of each spiral blade. To do.

  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 is rotated in the direction of arrow B in FIGS. 3 and 4 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. 3 by the moving feed chain 14, while the teeth 69 a and the handling net 74 of the handling drum 69 rotate in the direction of arrow B. Is threshed by the interaction. The object to be processed (grains and sawdust) separated from the cereals passes through the handling net 74 in the direction of arrow C1 (FIG. 4) and is received by the swing sorting shelf 51.

  The swing sorting shelf 51 is arranged at the uppermost transfer shelf 55 and the lower transfer shelf 56 arranged below the handling net 74 of the handling chamber 66, the upper sheave 53 arranged behind it, the sorting net 63 below and the rearmost end. The Strollac 62 is made up of.

  The upper and lower two-stage transfer shelves 55 and 56 are respectively provided with a plurality of triangular sorting plates 55a and 56a. The upper transfer shelf 55 is disposed in front of the sheave 53, and the lower transfer shelf 56 is disposed in front of the sorting net 63. Further, the lower transfer shelf 56 is longer than the upper transfer shelf 55 on the front side of the threshing device 15 so that a recovery port for recovering the workpiece leaking from the handling chamber 66 is opened above the upper transfer shelf 55. Arrange so that Then, the width of the recovery port for collecting the object to be processed that leaks through the handling net 74 of the handling chamber 66 in the lower transfer shelf 56 is set to a width that is approximately 1/3 of the entire length of the handling net 74.

  In this way, the lower transfer shelf 56 is arranged to be longer in the forward direction than the upper transfer shelf 55, so that the leakage from the handling net 74 is about 1/3 of the entire length of the handling net 74. This is based on the fact that 50% of the whole grain leaks up to the point. Further, the upper transfer shelf 55 is arranged below a second processing chamber 67 which will be described later, and can receive the second processed material.

  Since the grain 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, it is not necessary to roughly sort on the sheave 53, and the direct sorting net In 63, wind selection can be performed by blowing air from a tang 79, which will be described later, so that the load on the sheave 53 is reduced and efficient threshing becomes possible. In addition, 50% of the leakages are collected on the lower transfer shelf 56 and the upper transfer shelf 55, respectively, and the grains are leveled on the transfer shelves 55 and 56 to improve the sorting performance.

  Further, since the swing sorting shelf 51 swings in the up / down and front / rear direction by the operation of the swing sorting shelf drive mechanism (not shown), the object to be processed moves on the lower transfer shelf 56 while moving in the direction of arrow D (FIG. 2). The leaked grains having a high specific gravity pass through the sorting net 63 in the direction of arrow E, are accumulated on the first shelf 64, and are conveyed from the first spiral 65 to the grain tank 30 through the first lifting cylinder 16. The grain stored in the Glen tank 30 is conveyed to the outside of the combine via the augers 18 and 19.

  Among the objects to be processed on the oscillating sorting shelf 51, the lighter ones are blown off by the oscillating action of the oscillating sorting shelf 51 and the air blown by the fan 79 a of the Karatsu 79, and the arrow from the upper transfer shelf 55 toward the sheave 53. The second grain which moves in the D direction and is small in size on the Strollac 62 leaks in the direction of the arrow G and is collected on the second shelf board 85, and is moved to the second lifting cylinder 87 by the second spiral 86. Be transported.

  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 in the direction of arrow H (see FIG. 2) by a second whipping cylinder helix (not shown), and discharged from the second processing chamber inlet to above the second processing chamber 67. . The second processing cylinder 70 pivoted on the lower portion of the second processing chamber 67 is rotated in the direction of arrow J by a driving device (not shown). The second grain is separated from the second grain and removed from the branch rachis while moving in the direction of arrow I while colliding with a number of treated teeth 70a planted in the second treating cylinder 70. Part of the object to be processed passes through the receiving net 75 (see FIG. 2) provided below the second processing cylinder 70 and leaks to the sorting chamber 50, and most of the object to be processed is sieved from the upper transfer shelf 55. The grains are sent in the direction 53 and passed through the sheave 53 and the sorting net 63 and are collected in the first spiral 65.

  Thus, by recovering the second item on the upper transfer shelf 55 and reprocessing with the sheave 53, the separation between the grain and the sawdust becomes good.

  Further, the upper transfer shelf 55 is rotatable in the direction of the arrow Y in FIG. 2 with the end portion on the sheave 53 side as a rotation fulcrum, and the upper transfer shelf is brought into contact with the lower transfer shelf 56 by contacting the front end portion of the upper transfer shelf 55. Both the state where the leakage from the handling net 74 is collected only at 55 and the upper transfer shelf 55 are controlled to rotate in the direction to open the grain collection port of the lower transfer shelf 56, so that both the upper and lower transfer shelves 55, 56 It is switched to the state to be recovered.

  As a result, when the grain flow rate is small, the entire amount is collected on the upper transfer shelf 55, passed through the sheave 53, and sorted by the sheave 53, so that the number of sorting increases by one sheave sorting, and the sorting can be improved. On the other hand, when the grain flow rate is large, it is possible to improve the capacity by selecting both the upper and lower transfer shelves 55 and 56.

  In addition, the rotation of the front end of the upper transfer shelf 55 is related to the combine vehicle speed, and as the vehicle speed increases, the grain recovery amount in the lower transfer shelf 56 is increased, and the increase in the throughput of the sheave 53 is also suppressed. it can.

  As the vehicle speed increases, the amount of grain that leaks onto the upper and lower transfer shelves 55 and 56 increases, and the generation of swarf also increases. At this time, the mixing amount of grains and sawdust in the workpiece transferred from the upper transfer shelf 55 to the sheave 53 increases, and the sorting loss amount in the sheave 53 increases. In order to prevent this, when the grain flow rate is increased, an increase in the number of objects to be processed on the sheave 53 is suppressed, and the front end of the upper transfer shelf 55 is raised to improve the sorting performance, and the recovery port of the lower transfer shelf 56 is raised. Is greatly opened to increase the amount of leakage of the workpiece to the lower transfer shelf 56.

  The drive control of the vertical movement drive motor 57 of the upper transfer shelf 55 is performed based on a vehicle speed detection value of a vehicle speed sensor (not shown) and a rotation angle detection value of a potentiometer 58 for controlling the rotation of the upper transfer shelf 55.

  Furthermore, the upper transfer shelf 55 is driven so that the flow rate of the workpiece on the upper transfer shelf 55 is detected by the flow sensor 59 and the processing amount of the upper transfer shelf 55 can be changed according to the flow rate of the workpiece. The drive control of the control motor 57 can also be performed.

  For example, when the amount of the processed material on the lower transfer shelf 56 becomes a set value or more, the upper transfer shelf 55 so that the collection port of the lower transfer shelf 56 becomes small so that a large amount of the processed material is distributed to the upper transfer shelf 55. By lowering the front end of the sheet so that the processing load on the lower transfer shelf 56 does not exceed the set value, it is possible to stabilize the sortability of the object to be processed.

  Since the grain passing over the upper transfer shelf 55 leaks from the sheave 53, the sorting property is relatively good because the processing object selection process is performed once more than the grains collected in the lower transfer shelf 56. Therefore, when the processing load on the lower transfer shelf 56 exceeds the set value, the front end portion of the upper transfer shelf 55 is lowered so as to reduce the amount of workpieces leaking to the lower transfer shelf 56.

  The inclination angle (mesh) of each sheave plate of the sheave 53 may be changed in conjunction with the control of changing the area of the grain collection port of the lower transfer shelf 56 by the vertical movement of the front end portion of the upper transfer shelf 55. .

  This is because when the area of the grain collection port of the lower transfer shelf 56 is reduced and a large amount of workpieces are supplied to the upper transfer shelf 55, the amount of processing in the sheave 53 is also increased. This is because the ability is improved.

  In addition, the control of changing the area of the grain collection port of the lower transfer shelf 56 is performed by detecting the culm of a culm sensor (not shown) provided in the reaper 6 during vertical movement of the reaper 6 and turning of the combine corner. , You can go.

  Since the amount of the processed material in the threshing device 15 is reduced after the harvesting of the harvested product is finished, when the completion of the cutting is detected by the upward movement of the harvesting device 6, the area of the grain collection port of the lower transfer shelf 56 is reduced. Thus, the processing amount in the sheave 53 is increased.

  Further, when the combine is turning the corner of the field, the upper transfer shelf 55 is rotated in a direction to close the area of the grain collection port of the lower transfer shelf 56, and the entire amount of the processing object is transferred to the upper transfer shelf 55. To send.

  Furthermore, when the culm sensor is off, cereal harvesting is not performed, and therefore the upper transfer shelf 55 in a direction to close the area of the grain recovery port of the lower transfer shelf 56 in conjunction with the turning off of the cereal sensor. Is rotated to feed the entire amount of the object to be processed onto the upper transfer shelf 55. Further, when the culm sensor is on, the culm is being harvested, so that the upper transport shelf 55 is rotated in the direction to open the grain recovery port of the lower transport shelf 56 in conjunction with the on of the culm sensor. The object to be processed is also fed onto the lower transfer shelf 56 by performing dynamic control.

  The threshing cereals that have been threshed in the object to be processed that have traveled in the direction of arrow A in FIG. 3 and have reached the end of the handling room 66 are in the direction of arrow A1 shown in FIG. It is transported and put into the waste disposal chamber 95.

  Further, among the objects to be processed that have reached the end of the object to be processed conveyance direction of the handling chamber 66, short objects such as scraps are thrown into the direction of arrow A2 (FIG. 3) from the dust collection chamber inlet 68a and discharged. The dust processing chamber 68 enters the dust processing chamber 68 and is processed while being conveyed in the arrow K direction (FIGS. 2 and 3) by the spiral 71a of the rotating dust processing cylinder 71.

  In this embodiment, the second processing cylinder 70 and the dust removal processing cylinder 71 have the same diameter and are provided on the same axis. 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.

  Leakage (grains) in the processing object mainly composed of sawdust containing a small amount of grain that entered the dust disposal chamber 68 leaks from the receiving net 76 (FIG. 4) onto the swing sorting shelf 51. Then, it is guided to the Strollac 62 provided on the swing sorting shelf 51 and sent from the second shelf 85 to the second processing chamber 67 via the second lifting cylinder 87.

  The Strollac 62 attached to the swing sorting shelf 51 has a rotating base attached to the rear portion of the swing sorting shelf 51 and has a configuration in which the front of the Strollac 62 is a free end, and the sorting wind of the second Chinese fan 109 is strawed. It is possible to increase the wind sorting ability of the soot and the sawdust by hitting the front end of the rack 62.

  As shown in FIGS. 2 and 3, a crossflow fan 91 is provided at the rear of the threshing device 15. Then, air containing dust is sucked by blowing air by rotation of the cross flow fan 91, blown out in the direction of arrow L from the outlet of the cross flow fan, and discharged to the outside of the combine.

  Among the dust that has fallen from the dust removal processing chamber 68 to the end of the swing sorting shelf 51 as indicated by the arrow M (FIG. 2), those having a small diameter and heavy specific gravity, such as second and third grains, swing. After passing through the Strollac 62 or the sheave 53 at the end of the sorting shelf 51 in the direction of the arrow G, it is leaked to the second shelf 85 and processed again in the second processing chamber 67.

  In this embodiment, a suction fan 92 is provided above one side of the swing sorting shelf 51 in the vicinity of the terminal end of the handling cylinder 69, and a dust removal processing cylinder 71 is provided above the other side.

  In the conventional threshing device 15, since a small suction fan is disposed on the opposite side across the swing sorting shelf 51 behind the dust removal processing cylinder 71, the object to be processed discharged from the handling cylinder 69, dust processing The entire amount of the dust discharged from the barrel 71 dropped on the sheave 53 of the swing sorting section 50, and the load for sorting in the sheave 53 was large, so that the efficiency did not increase.

  However, as described above, in the present embodiment, the workpiece discharged from the handling cylinder 69 and the dust discharged from the dust processing cylinder 71 are sucked by the suction fan 92 acting on the entire width of the dust processing cylinder 71. Therefore, a single particle moves through the sheave 53 while the workpiece is being sucked by the suction fan 92 on the opposite side of the dust exhausting cylinder 71 from the dust exhausting cylinder 71 while moving on the sheave 53. The particles fall onto the swing sorting shelf 51 from between the plurality of lattices of the sheave 53. For this reason, the sorting performance of the dust and single particles is improved more than before.

  In addition, the lightweight dust in the object to be processed from the handling chamber 66 is drawn into the air flowing toward the outside of the machine body by the suction fan 92, and all the objects to be processed from the handling chamber 66 are placed on the swing sorting shelf 51. Since the object does not fall, the load on the swing sorting shelf 51 is reduced, the sorting performance of the object to be processed is improved as compared with the conventional one, and the dust discharged from the handling cylinder 69 is moved to the swing sorting shelf sheave. Thus, dust can be sucked in front of 53 and the amount of sawdust transferred onto the swing shelf 51 can be reduced. As a result, the performance of swing sorting in the sorting chamber 50 can be improved.

  Further, a plurality of the suction fans 92 are arranged in parallel along the side wall portion of the threshing device 15, and only one outlet 93 a of the suction air duct 93 of the plurality of suction fans 92 is provided at the rear of the machine body. It may be adopted.

  Thus, the apparatus can be made compact by providing only one outlet 93a of the suction air duct 93 of the plurality of suction fans 92 arranged at the rear of the machine body and providing the duct outlet 93a at the rear of the machine body. Moreover, since the dust is discharged to the rear of the fuselage, the dust does not fall into the uncut shears.

  Further, while the workpiece is moving on the swing sorting shelf 51 by the suction air of the suction fan 92, it is possible to collect the scorpion particles and the like. Further, since there is only one duct outlet 93a, a compact duct configuration can be obtained.

  At this time, if the suction force of the suction fan 92b closer to the outlet side of the two suction fans 92a and 92b having the same rotation direction is increased, the dust discharged from the front fan 92a is discharged. Even if dust is sent to the rear fan 92b, the rear fan 92b is not clogged, so that the suction efficiency of the dust is improved as compared with the conventional case.

  Also, by setting the rotation direction of the two or more fans 92a and 92b to the same direction, even if the dust sent from the front fan 92a is sent to the rear fan 92b, all the fans Since the rotation directions of 92a and 92b are the same direction, dust can be smoothly fed from the front fan 92a to the rear fan 92b, and the dust is not clogged.

  Further, as shown in the plan view of the threshing device 15 in FIG. 3 and the schematic side view of the threshing device 15 in FIG. 5, the plurality of suction fans 92a and 92b are driven by a single belt 94, and these fans are further driven. If the drive of a plurality of fans including the other fans 79a and 109b of 92a and 92b is driven by a single drive source 96, the drive system of the suction fans 92a and 92b can be made compact.

At this time, as shown in the schematic plan view of the threshing apparatus 15 of FIG. 6, a single drive source with a continuously variable transmission having a plurality of suction fans 92a, the drive pulley 92a of 92b _1, 92b ₁ of the belt 94 With the configuration driven by 96, by changing the rotation radius of each suction fan 92a, 92b with the manual levers 97a, 97b, fine drive adjustment suitable for the conditions of each suction fan 92a, 92b can be achieved. It becomes possible.

Further, as shown in the schematic plan view of the threshing device 15 in FIG. 7, the driving pulleys 92a ₁ and 92b ₁ of the plurality of fans 92a and 92b use pulleys having fixed diameters that cannot change the rotation radius, respectively, The pulleys 92 a ₁ and 92 b ₁ may be coaxial with the belt-type continuously variable transmission pulley 98, and the belt 99 may be wound around the pulley 98 and driven by the drive source 96. In this case, the rotation speeds of the fans 92a and 92b can be changed simultaneously.

FIG. 8 is a schematic plan view (FIG. 8A) of the threshing device 15 and a relationship diagram between the vehicle speed and the number of rotations of the suction fan 92 (FIG. 8B). A configuration is shown in which only the driving speed of the suction fan 92a is changed, or the suction fans 92a and 92b are controlled to increase and decrease. Example shown in FIG. 8, the rotation diameter suction fan 92a with continuously variable pulley 92a ₁ of the belt is driven as a variable to drive the suction fan 92b in the pulley 92b ₁ fixed diameter. FIG. 8 shows a configuration in which the tension diameter of the belt-type continuously variable transmission pulley 92a ₁ is made variable by operating the tension arm 103 by the control motor 100.

Generally, when the vehicle speed increases, the waste generated in the threshing device 15 increases, and the sorting load of the object to be processed on the swing sorting shelf 51 increases. Therefore the control motor 100 of the suction fan 92 in conjunction with the vehicle speed to adjust the tension of the continuously variable transmission pulley 92a ₁ of the belt 94 of the belt type that, as shown in FIG. 8, for adjusting the rotational speed of the suction fan 92a Made the configuration.

  By changing the number of rotations of the suction fan 92a on the front side of the swing sorting shelf 51 according to the processing amount of the processing object sent from the handling cylinder 69, the swing sorting shelf 51 and the like can be changed according to the increase or decrease of the load. The load can be kept almost constant.

  It is also possible to detect the layer thickness of the object to be processed on the swing sorting shelf 51 and start / stop driving of the suction fans 92a, 92b or increase / decrease control of the suction fans 92a, 92b according to the layer thickness. it can.

  In this case, when the amount of processed grains increases and the load on the swing sorting shelf 51 increases, the suction force of the suction fan 92a is applied accordingly, and the object to be processed is placed on the front side of the swing sorting shelf 51. By processing, the load of the swing sorting shelf 51 can be kept substantially constant even when the load increases.

  FIG. 9 shows the concept of the control timing for detecting the corner turning of the combine in the field and stopping the suction fan 92a or driving the suction fan 92a at a reduced speed. No cutting operation is performed during corner turning, and only the object to be processed in the threshing device 15 is processed. During corner turning, the suction fan 92a is stopped, or the suction fan 92a is driven at a reduced speed to overselect. Prevents grain loss due to

As shown in FIG. 9 (a), corner turning is detected by the amount of operation of a steering tool (not shown), and when it is determined that corner turning, the left and right rotation shafts of the traveling device 3 are independently driven by the engine driving force. The drive of the suction fan 92a is controlled based on the on / off of the side clutch of the transmission that transmits or cancels the transmission, or the corner turning is detected by detecting the turning amount of the steering tool as shown in FIG. 9B. If it is determined, there is a method of changing the tension of the belt 94 (FIG. 8) for rotating the belt-type continuously variable transmission pulley 92a ₁ to reduce the rotation of the suction fan 92a.

  In addition, when it is determined that there is no culm based on the detection result of the culm sensor (not shown), a configuration in which the suction fan 92a is stopped and the suction fan 92a is driven at a reduced speed may be employed.

FIG. 10 (a) is a diagram for explaining the timing when the suction fan 92a is stopped by the presence / absence of the culm by the culm sensor, and FIG. 10 (b) is determined by the culm sensor to be free of the culm. it is a diagram illustrating the timing of lowering the continuously variable pulley 92a ₁ of the belt-type rotation of the suction fan 92a by changing the tension of the belt 94 to rotate when.

  When cereal husk is not detected, no mowing work is performed, and only the processing object in the threshing apparatus 15 is processed, and the grain loss due to over-selection can be prevented by the method shown in FIGS. .

  FIG. 11 is a left side view of a combine that performs a grain harvesting operation according to another embodiment of the present invention, FIG. 12 is a plan sectional view of the combine threshing apparatus of FIG. 11, and FIG. 13 is a combine of FIG. A cross-sectional view of the threshing device and Glen tank is shown.

  The threshing device is configured such that a wide cross-flow fan 104 having an axis parallel to the rotation axis of the dust removal processing cylinder 71 is provided on the opposite side of the dust collection processing cylinder 71 with the swing sorting shelf 51 interposed therebetween. Other configurations are the same as those of the threshing apparatus shown in FIGS.

  The cross flow fan 104 can perform a suction action over the entire width of the dust exhausting cylinder 71. In addition, since there is an action of sucking dust, such as sawdust having a low specific gravity, in the processing object discharged from the handling cylinder 69, the entire processing object may drop onto the sheave 53 of the swing sorting unit 50. And the load on the sheave 53 is reduced.

  In addition, only dust wastes such as sawdust having a low specific gravity among dusts such as sawdust including single particles discharged from the dust removal treatment cylinder 71 are placed between the swing sorting shelf 51 and the dust removal treatment cylinder. The full-width suction fan 104 provided on the opposite side of 71 is discharged toward the outside of the machine body, and single grains can be dropped and collected from the gap of the sheave 53 by the orthogonal sorting method, so that the grain sorting performance is good.

  As shown in FIG. 13, the discharge port 105 a of the suction duct 105 containing the cross flow fan 104 is provided on the lower left side in the forward direction of the machine body. The object can be discharged toward the lower left side outside the fuselage, and the dust is not discharged to the uncut shears. Further, dust blast is blown onto the uncut mushroom, and this dust blast has an effect of drying the uncut mushroom and an effect of reducing dew.

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

  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 side surface sectional drawing of the combine of FIG. It is a plane sectional view of the combine of FIG. It is principal part sectional drawing of the threshing apparatus of the combine of FIG. 2 is a schematic side sectional view of the combine threshing apparatus of FIG. 1. It is a plane cross-sectional schematic diagram of the combine threshing apparatus of FIG. It is a plane cross-sectional schematic diagram of the combine threshing apparatus of FIG. FIG. 9 is a schematic plan view (FIG. 8A) of the combine threshing apparatus of FIG. 1 and a relational diagram (FIG. 8B) between the vehicle speed and the rotational speed of the suction fan. It is a figure explaining the timing of the suction fan drive control at the time of corner turning of the combine of FIG. It is a figure explaining the timing of the suction fan drive control at the time of the detection of the culm of the combine of FIG. It is side surface sectional drawing of the combine which performs the harvesting operation | work of the grain of embodiment of this invention. It is a plane cross-sectional schematic diagram of the combine of FIG. It is principal part sectional drawing of the threshing apparatus of the combine of FIG.

Explanation of symbols

DESCRIPTION OF SYMBOLS 2 Traveling frame 3 Traveling device 4 Crawler 5 Operation lever 6 Cutting device 7 Weeding tool 14 Feed chain 15 Threshing device 16 First cereal cylinder 18 Vertical auger 19 Horizontal auger 20 Pilot seat 30 Glen tank 32 Glen tank spiral 50 Sorting part 51 Oscillating sorting shelf 53 Sheave 55 Upper transfer shelf 55a, 56a Sorting plate 56 Lower transfer shelf 57 Upper transfer shelf drive control motor 58 Potentiometer 59 Processed object flow rate sensor 62 Strollac 63 Sorting net 64 First shelf plate 65 First spiral 66 Handling chamber 67 Second processing chamber 68 Dust processing chamber 68a Dust processing chamber inlet 69 Handling cylinder 69a Teeth 70 Second processing cylinder 70a Processing teeth 71 Dust processing cylinder 71a Spiral 74 Handling net 75 Second processing cylinder receiving net 76 Receiving net 79 Kara 79a Kara fan 85 Second shelf 86 Second spiral 87 Second milling cylinder 91 Cross-flow fan 2 (92a, 92b) suction fan 92a _1, 92b ₁ driving pulley 93 suction duct 93a duct outlet 94 belt 95 straw discharge processing chamber 96 driving sources 97a, 97b manual lever 98 continuously variable pulley 99 the belt 100 control motor 103 Tension Arm 104 Cross-flow fan 105 Suction duct 105a Discharge port 109 Niban Kara fan

Claims (4)

A handling chamber 66 in which a handling cylinder 69 for separating the grain from the cereal is pivoted, and a dust exhausting cylinder 71 for processing a dust exhausted product selected from the grain after threshing at a rear position of the handling chamber 66. A threshing apparatus in which a dust removal processing chamber 68 is provided, and a sorting chamber 50 is provided below the handling chamber 66 and the dust removal processing chamber 68. In
A threshing apparatus, wherein a dust removal cylinder 71 is disposed above one side of the swing sorting shelf 51 of the sorting chamber 50 and a suction fan 92 is disposed above the other side of the swing sorting shelf 51.   The threshing apparatus according to claim 1, wherein a plurality of the suction fans (92) are arranged.   The threshing apparatus according to claim 1, wherein only one duct outlet 93 a for suction air of the plurality of suction fans 92 is provided.   Among the plurality of suction fans 92, the suction force of the suction fan 92b disposed at a position near the duct outlet 93a for suction air is greater than the suction force of the suction fan 92a disposed at a position far from the duct outlet 93a for suction air. The threshing apparatus according to any one of claims 1 to 3, wherein the threshing apparatus is large.

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