JP2008283919A - Combine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a combine having a simple structure of an adjusting part and improved grain selection performance by adjusting the blowing air quantity of a suction fan and the separation air quantity of a winnower fan in compliance with the drive of a waste straw treating part to treat waste straw discharged by threshing treatment. <P>SOLUTION: The combine is provided with a suction fan to suck dust generated by threshing treatment and discharge the dust from the machine, a winnower fan to send separation wind to finely select the grain selected by the threshing treatment and having a separation air quantity adjusting part to adjust the separation air quantity, and a waste straw treating part to treat waste straw discharged by threshing treatment. The suction fan has an air quantity adjusting part to adjust the blowing air quantity, the air quantity adjusting part adjusts the blowing air quantity in compliance with the drive of the waste straw treating part which is driven according to the flow quantity of the waste straw, and the separation air quantity adjusting part adjusts the separation air quantity. <P>COPYRIGHT: (C)2009,JPO&INPIT

Description

  The present invention absorbs dust generated by the threshing process and discharges it to the outside of the machine, a tang fan that sends a sorting wind for further selecting the grains selected by the threshing process, and discharged by the threshing process. The present invention relates to a technique for adjusting the air volume of a suction fan and the selected air volume of a tang fan in synchronism with the amount of exhaust of the exhaust processing section.

  Grains, dust, and the like that have been threshed by the threshing device and dropped from the receiving net are further carefully selected by removing the dust using a sorting wind sent from a tang fan. The removed dust is sucked by a suction fan disposed at the rear of the machine body and discharged outside the machine.

  The amount of dust generated by the threshing process is approximately proportional to the amount of cereal. On the other hand, the rotation speed of the suction fan is substantially constant during the work. Although the rotation speed of the tang fan is substantially constant during the operation, a shutter is provided at the inlet of the tang fan, and the shutter, the chaff fin, and the discharge amount detecting means are linked and connected. A technique that opens and closes a shutter of a red fan according to the amount of light is known.

  However, since the discharge air volume of the suction fan is substantially constant regardless of the amount of dust, if the amount of harvested cereals decreases and the threshing amount decreases, the selection air volume of the tang fan decreases, but the air volume of the suction fan does not decrease. Therefore, there is a problem that even the second item is discharged out of the apparatus together with the dust.

Patent Document 1 discloses a threshing machine that can simultaneously adjust the selection air volume of a tang fan and the suction force of a dust exhaust fan (suction fan) in order to solve the above problems.
JP 2001-95362 A

However, in Patent Document 1, the driving load of the handling cylinder is detected by a sensor, and the detection result is sent as an electrical signal to the control means. Based on the signal, the control means includes a damper provided in the tang fan and an exhaust. Since the rotational speed of the dust fan is controlled in conjunction with the dust fan, the control method is complicated. Further, since the suction force of the dust exhaust fan adjusts the rotational speed of the dust exhaust fan, a transmission is required, and the number of parts of the adjuster is large, and the structure of the adjuster is complicated.
The present invention has been made to solve such a problem, and the structure of the adjustment unit is simple by adjusting the discharge air amount of the suction fan and the selection air amount of the tang fan in synchronism with the amount of waste after the threshing process. And it aims at providing the combine which can improve the sorting performance of a grain.

  The problem to be solved by the present invention is as described above. Next, means for solving the problem will be described.

  That is, in claim 1, a suction fan that absorbs dust generated by the threshing process and discharges it to the outside of the machine, and a fan that sends a sorting wind for further selecting the grains selected by the threshing process, An air volume adjusting unit in which the suction fan adjusts the discharge air volume in a combine comprising a tang fan having a selection air volume adjusting unit that adjusts the selection air volume, and a waste processing unit that processes the waste discharged by the threshing process. The air volume adjusting unit adjusts the discharge air volume in synchronism with the driving of the evacuation processing unit driven according to the evacuation flow rate, and the sorting air volume adjusting unit adjusts the sorting air volume.

  3. The plate-like body according to claim 2, wherein the suction fan is a cross-flow fan, and the air volume adjusting portion is provided at the suction side end of the upper wall of the suction fan. Rotates around one end.

4. The plate-like body according to claim 3, wherein the suction fan is a cross-flow fan, and the air volume adjusting portion is provided at a suction side end of an upper wall of the suction fan. Is slid along the upper wall.

  As effects of the present invention, the following effects can be obtained.

  In claim 1, since the discharge air volume of the suction fan and the selection air volume of the tang fan are simultaneously adjusted according to the waste flow rate associated with the threshing amount, the fine discharge air amount can be adjusted according to the threshing amount, and the grain The efficiency of selection is improved.

  In claim 2, since the opening area of the suction side opening of the suction fan can be adjusted by the plate-like body provided at the suction side end of the upper wall of the suction fan, the fine discharge air volume according to the threshing amount Can be adjusted. In addition, the structure is simple because the plate-like body rotates around one end.

  In Claim 3, since the opening area of the suction side opening part of a suction fan can be adjusted with the plate-shaped body provided in the suction side edge part of the upper wall of a suction fan, the fine discharge air volume according to the amount of threshing Can be adjusted. Moreover, since the said plate-shaped body moves substantially planarly along the outer peripheral wall surface of a suction fan, it can be installed even if the interior of the machine is space-saving.

Hereinafter, the combine 1 which concerns on embodiment of this invention is demonstrated based on drawing.
FIG. 1 is a side view of a combine 1 according to an embodiment of the present invention. In addition, this invention is not limited to the combine 1 which concerns on a present Example, It can apply widely to the combine provided with a waste disposal part, a tang fan, and a suction fan. In the following description, the left side with respect to the traveling direction of the combine 1 is simply the left side, and the right side with respect to the traveling direction of the combine 1 is simply the right side.

  As shown in FIG. 1, the combine 1 has a traveling machine body 10 supported by a pair of left and right traveling crawlers 2, and a cutting unit 3 is disposed at a front end portion of the traveling machine body 10 so as to be movable up and down via a lifting mechanism. The driving unit 5 is disposed on the right front part of the traveling machine body 10, the grain tank 6 for storing the grain after threshing is disposed on the right rear part of the traveling machine body 10, and the threshing unit is disposed on the left side of the traveling machine body 10. 7 is disposed, and a waste disposal unit 8 is disposed at the rear thereof.

  The cereal grains harvested by the harvesting unit 3 are conveyed to the threshing unit 7 by the feed chain 110, threshed by the rotation of the handling cylinder in the threshing unit 7, and the grains and swarf that leaked through the receiving net are selected by sorting, While the first thing (rice cake) is stored in the grain tank 6, the waste is chopped or discharged as it is by the waste treatment unit 8.

  2 is a side view of the threshing unit 7 and the waste disposal unit 8 of the combine 1 according to the embodiment of the present invention, and FIG. 3 is a swing sorting device 720, a Chinese fan 730, a suction fan 740, and a waste amount detection. It is a side view of the interlocking mechanism of the mechanism 820.

  As shown in FIG. 2, the threshing unit 7 includes a handling cylinder 710 and a receiving net 712 arranged below the outer periphery of the handling cylinder 710, and a sorting unit is arranged below the threshing unit 7. Is provided with a swing sorting device 720, a tang fan 730, a wind direction plate, and the like, and a suction fan 740 for sucking and discharging dust is disposed above the swing sorting device 720. Also, below the swing sorting device 720, a first conveyor 750 that takes out the first item and a second conveyor 760 that returns the second item to the swing sorting device 720 are disposed.

  The handling drum 710 is formed in a cylindrical shape, has an axial center disposed in the front-rear direction, and a plurality of saw teeth 711 are arranged on the outer peripheral surface.

  The rocking sorter 720 includes a feed pan 721, a chaff sheave 722, a grain sheave 723, a Strollac 724, etc., and cereal grains leaking from a receiving net 712 stretched below the handling cylinder 710 are The feed pan 721, the chaff sheave 722, and the like are configured to be oscillated and sorted.

  As shown in FIG. 3, the chaff sheave 722 has a plurality of sorting plates 725 arranged in the front-rear direction at predetermined intervals, and the sorting plate 725 can be rotated to adjust the sorting interval, thereby reducing the amount of cereal. Accordingly, the interval between the sorting plate 725 and the sorting plate 725 is changed, and the grain and sawdust sent from the feed pan 721 and the grain and sawdust leaked from the receiving net 712 are roughly sorted.

  The sorting plate 725 is connected to the chaff interlocking plate 726 at one end on the left and right sides. The chaff interlocking plate 726 has a chaff sheave adjustment arm 727 connected to one end thereof, and the chaff sheave adjustment arm 727 is rotated so that the chaff interlocking plate 726 moves together in the front-rear direction, so that the chaff interlocking plate is moved. The sorting plates 725, 725,... Connected to 726 are rotated to change the inclination angle and the gap.

  A tuning wire 728 is connected to an end of the chaff sheave adjusting arm 727, and the other end of the tuning wire 728 is connected to a detection arm 821 of the rejection processing unit 8 described later. Further, the chaff sheave adjusting arm 727 is connected to a spring (not shown) at an end thereof and is biased in a direction opposite to the pulling direction of the tuning wire 728.

  As shown in FIG. 2, the Glen sheave 723 is installed below the chaff sheave 722 and finely sorts grains and the like that have been sorted and dropped by the chaff sheave 722 together with the sorting air blown from the tang fan 730.

  The Strollac 724 is installed at the end of the chaff sheave 722, loosens the swarf by swinging, drops the grain mixed in the swarf onto the second conveyor 760, and performs re-sorting.

  The tang fan 730 is arranged in front of and below the swing sorting device 720 and is horizontally installed in the full width (left and right direction) of the swing sorting device 720, and the sorting wind is applied to the grains falling from the chaff sheave 722. Precise sorting is carried out by throwing grains to the first conveyor 750 and light items having a small specific gravity to the second conveyor 760. The tang fan 730 is provided in the tang fan case 731, and has a shutter 732 (FIG. 3) for adjusting the suction air volume on the side wall of the tang fan case 731.

  As shown in FIG. 3, the shutter 732 has a shutter shaft 733 at the end, and rotates up and down around the shutter shaft 733 to open and close the suction port of the red fan 730. An end of the shutter shaft 733 is fixed to the red fan case 731, and the end of the shutter 732 is pivotally supported on the shutter shaft 733. One end of a shutter lever 734 is fixed to one end of the shutter 732, and one end of a tuning wire 735 is connected to the other end of the shutter lever 734, and the other end of the tuning wire 735 is connected to an exclusion processing unit 8 described later. It is connected to the detection arm 821. Further, a spring (not shown) is connected to the other end of the shutter lever 734 to urge it in a direction opposite to the pulling direction of the tuning wire 735. As described above, the tang fan 730 includes a sorting air volume adjustment unit including the shutter 732, the shutter shaft 733, the shutter lever 734, the spring (not shown), and the like.

  The suction fan 740 is installed horizontally above the rear part of the swing sorting device 720 in the full width (left and right direction) of the swing sorting device 720, and sucks the dust that has entered the sorting wind from the Kara fan 730. Drain outside. The suction fan 740 is a cross flow fan provided in the suction fan case 741, and has an opening / closing plate 742 (FIG. 3) for adjusting the air volume on the upper wall of the suction fan case 741.

  As shown in FIG. 3, the opening / closing plate 742 is a plate-like body that is disposed horizontally across the entire width (left-right direction) of the suction fan 740, and is attached to the fulcrum shaft 743 fixed to the upper portion of the suction fan case 741. The rear part is pivotally supported, and the front part is pivotable in the vertical direction around the fulcrum shaft 743 so that it can be opened and closed. Further, the opening / closing plate 742 has a tuning wire 744 connected to an end 745 opposite to the fulcrum shaft 743, and is connected via a tuning wire 744 to a detection arm 821 of the exclusion processing unit 8 described later. . Furthermore, the spring 746 (FIG. 4) is connected to the end portion 745 of the opening / closing plate 742 and biases it in the direction opposite to the pulling direction of the tuning wire 744. However, it is also possible to adopt a configuration in which an arm is projected from the rotation base side of the opening / closing plate 742 and connected to the tuning wire 744. As described above, the suction fan 740 includes an air volume adjusting unit including the opening / closing plate 742, the fulcrum shaft 743, the spring 746, and the like.

  As shown in FIG. 2, the first conveyor 750 is located below the swinging sorter 720 and is laterally arranged behind the red pepper fan 730 in the left-right direction. The first item is taken out and conveyed to the milling cylinder 751 connected in communication with the right end of the first conveyor 750. The conveyed grain is carried into the grain tank 6 through the milled cylinder 751.

  The No. 2 conveyor 760 is laterally arranged behind the No. 1 conveyor 750 in the left-right direction. The second conveyor 760 takes out the grain with branch branch and the like (second item) selected by the swing sorting device 720, and the second conveyor 760. It is conveyed to a reduction cylinder 761 that is connected to the right end. The conveyed grain with branches and the like is returned to the upper surface side of the feed pan 721 of the swing sorter 720 via the reduction cylinder 761 and re-sorted.

  Next, the rejection processing unit 8 will be described with reference to FIGS. The waste disposal unit 8 includes a waste chain 810, a chain guide 825, a waste amount detection mechanism 820, and a waste cutter 830.

  The waste chain 810 is disposed on the rear end side (feed end side) of the feed chain 110, and the waste inherited from the rear end side of the feed chain 110 is conveyed to the waste cutter 830 to be cut or cut. Without discharging.

  As shown in FIG. 3, the waste amount detection mechanism 820 is abutted (or connected) to a detection rod 822 fixed to the lower surface of the chain guide 825 and projecting downward, and a lower end of the detection rod 822. A detection plate 823, a rotation shaft 824 for fixing (or pivotally supporting) the rotation base of the detection plate 823, a detection arm 821 connected to the detection plate 823 and connected to the tuning wire. To do.

  In the waste amount detection mechanism 820, a rotation shaft 824 having an axial center in the left-right direction is pivotally supported by the body of the combine 1, and an end portion (rear end) of the detection plate 823 and the rotation shaft 824 One end (upper end) of the detection arm 821 is fixed. On the upper surface of the detection plate 823, a lower end of a detection rod 822 that is suspended from the lower surface of the chain guide 825 is brought into contact. The other end (rear end) of the tuning wires 728, 735, and 744 is attached to the other end (lower end) of the detection arm 821. One end portions (front ends) of the tuning wires 728, 735, and 744 are attached to the chaff sheave adjusting arm 727 of the chaff sheave 722, the shutter lever 734 of the red fan 730, and the opening / closing plate 742 of the suction fan 740, respectively.

  Next, an interlocking mechanism between the waste amount detection mechanism 820, the swing sorting device 720, the red pepper fan 730, and the suction fan 740 will be described with reference to FIG.

  As shown in FIG. 3, the swing sorter 720, the red pepper fan 730, and the suction fan 740 are connected to the waste amount detection mechanism 820 via the tuning wires 728, 735, and 744, respectively, and the waste amount detection. The chaff sheave 722 of the swing sorting device 720, the shutter 732 of the red pepper fan 730, and the opening / closing plate 742 of the suction fan 740 operate according to the amount of cereal detected by the mechanism 820.

  The waste amount detection mechanism 820 moves the chain guide 825 in the vertical direction when the waste is conveyed between the waste chain 810 and the chain guide 825. That is, when the waste flow rate (the amount by which waste is conveyed) increases, the chain guide 825 is pushed downward by the waste, and when the waste flow rate decreases, the chain guide 825 rises upward.

  When the amount of slaughter increases, that is, when the amount of threshing increases and the amount of threshing increases, the chain guide 825 is pushed down, and the detection rod 822 suspended from the lower surface of the chain guide 825 is lowered. When the detection rod 822 is lowered, the detection plate 823 in contact with the lower end of the detection rod 822 rotates counterclockwise about the rotation shaft 824. When the detection plate 823 rotates, the detection arm 821 also rotates counterclockwise around the rotation shaft 824. By rotating the detection arm 821, the tuning wires 728, 735, 744 attached to the other end (lower end) of the detection arm 821 are pulled, and at the same time, the chaff sheave 722 of the swing sorting device 720 and the shutter of the red fan 730. 732 and the opening / closing plate 742 of the suction fan 740 operate.

  On the other hand, when the amount of evacuation decreases, the chain guide 825 rises upward and the detection rod 822 also rises upward. When the detection rod 822 is raised, the detection plate 823 rotates clockwise about the rotation shaft 824. When the detection plate 823 rotates, the detection arm 821 also rotates clockwise about the rotation shaft 824 accordingly. As the detection arm 821 rotates, the tuning wires 728, 735, and 744 are loosened. At the same time, the chaff sheave 722 of the swing sorting device 720, the shutter 732 of the red fan 730, and the opening / closing plate 742 of the suction fan 740 And work in the opposite direction.

  In this way, when the waste amount detection mechanism 820 is driven in accordance with the waste flow rate, the chaff sheave 722 of the swing sorting device 720, the shutter 732 of the red fan 730, and the opening / closing plate 742 of the suction fan 740 operate simultaneously. . That is, the operations of the chaff sheave 722 of the swing sorting device 720, the shutter 732 of the red fan 730, and the opening / closing plate 742 of the suction fan 740 can be controlled according to the exhaust flow rate.

Next, the relationship between the drive of the waste amount detection mechanism 820 and the operation of the chaff sheave 722 of the swing sorting device 720 will be described.
The chaff sheave 722 operates so as to widen the sorting interval of the sorting plates 725 of the chaff sheave 722 (increase the angle of the sorting plates 725) when the amount of culling is large, that is, when the amount of threshing is large. On the other hand, when the amount of waste is small, that is, when the amount of threshing is small, the sorting interval of the sorting plate 725 of the chaff sheave 722 is narrowed (the angle of the sorting plate 725 is laid down). In this way, the amount of grain passing through the chaff sheave 722 is adjusted.

  As described above, when the amount of waste increases, the waste amount detection mechanism 820 pulls the tuning wire 728 by rotating the detection arm 821 counterclockwise. By pulling the tuning wire 728, the chaff sheave adjusting arm 727 of the chaff sheave 722 is pulled rearward of the aircraft. When the chaff sheave adjustment arm 727 is pulled, the chaff interlocking plate 726 operates integrally, and the sorting plate 725 pivoted to the chaff interlocking plate 726 operates. At this time, the sorting plate 725 rotates in the direction of widening the sorting interval (setting the angle of the sorting plate 725). Thereby, even if a large amount of grains, sawdust, or the like falls, the sorting process can be performed without clogging.

  On the other hand, when the evacuation amount decreases, the evacuation amount detection mechanism 820 causes the tuning wire 728 to be in a slack state as the detection arm 821 rotates clockwise. When the tuning wire 728 is in a slack state, the chaff sheave adjusting arm 727 is rotated in the contraction direction of the spring by the tension of a spring (not shown) connected to the end. As the chaff sheave adjusting arm 727 rotates, the chaff interlocking plate 726 operates as a unit and the sorting plate 725 operates. At this time, the sorting plate 725 rotates in the direction of narrowing the sorting interval (the angle of the sorting plate 725 is lowered). Thereby, the amount of leakage can be restricted and contamination of sawdust can be prevented.

  In this way, by adjusting the sorting interval of the sorting plate 725 of the chaff sheave 722 in synchronization with the waste amount detection mechanism 820 that is driven according to the waste amount, the waste amount, that is, the sorted amount corresponding to the threshing amount. Can be adjusted.

Next, the relationship between the drive of the waste amount detection mechanism 820 and the operation of the shutter 732 of the red fan 730 will be described.
When the amount of waste is large, the shutter 732 of the tang fan 730 rotates in the direction in which the shutter 732 is opened (upward) in order to increase the selection air volume. On the other hand, when the amount of waste is small, the shutter 732 is rotated in the closing direction (downward) in order to reduce the sorting air volume.

  When the amount of waste increases, the waste amount detection mechanism 820 pulls the tuning wire 735 attached to the other end (lower end) of the detection arm 821 by rotating the detection arm 821 counterclockwise. By pulling the tuning wire 735, the shutter lever 734 is pulled rearward. When the shutter lever 734 is pulled, the shutter 732 rotates in the opening direction (upward). Thereby, the selection air volume of the Chinese fan 730 can be increased.

  On the other hand, when the evacuation amount decreases, the evacuation amount detection mechanism 820 causes the tuning wire 735 to be in a slack state as the detection arm 821 rotates clockwise. When the tuning wire 735 is in a slack state, the shutter lever 734 is rotated in the contraction direction of the spring by the tension of a spring (not shown) connected to the end. As the shutter lever 734 rotates, the shutter 732 rotates in the closing direction (downward). Thereby, the sorting air volume of the Chinese fan 730 can be reduced.

  Thus, by adjusting the opening / closing of the shutter 732 in synchronization with the waste amount detection mechanism 820 that is driven according to the amount of waste, the amount of waste, that is, the selection air amount according to the threshing amount can be adjusted.

Next, the relationship between driving of the waste amount detection mechanism 820 and the operation of the opening / closing plate 742 of the suction fan 740 will be described.
The opening / closing plate 742 of the suction fan 740 rotates in a direction (downward) to close the opening / closing plate 742 in order to increase the amount of discharged air when the amount of waste is large. On the other hand, when the amount of waste is small, the opening / closing plate 742 is rotated in the opening direction (upward) in order to reduce the discharge air volume.

  When the amount of waste increases, the waste amount detection mechanism 820 pulls the tuning wire 744 attached to the other end (lower end) of the detection arm 821 by rotating the detection arm 821 counterclockwise. By pulling the tuning wire 744, the opening / closing plate 742 is pulled, and the opening / closing plate 742 rotates in the closing direction (downward). Thereby, the discharge air volume of the suction fan 740 can be increased.

  On the other hand, when the evacuation amount decreases, the evacuation amount detection mechanism 820 causes the tuning wire 744 to be in a slack state as the detection arm 821 rotates clockwise. When the tuning wire 744 is slackened, the opening / closing plate 742 is pulled in the contraction direction of the spring 746 by the tension of the spring 746 (FIG. 4) connected to the end 745, and the opening / closing plate 742 opens (upward). Direction). Thereby, the discharge air volume of the suction fan 740 can be reduced.

  In this way, by adjusting the opening / closing of the opening / closing plate 742 in synchronization with the waste amount detection mechanism 820 that is driven according to the amount of waste, the amount of waste air, that is, the discharge air amount according to the threshing amount can be adjusted. .

  Here, a modified example of the suction fan 740 will be described with reference to FIG. FIG. 4 is a side view of the suction fans 740 and 740b. 4A is a side view of the suction fan 740 of the above-described embodiment, and FIG. 4B is a side view of a suction fan 740b which is a modified example of the suction fan 740 described below.

  As shown in FIG. 4, the suction fan 740b is a transverse fan provided in the suction fan case 741b, similar to the suction fan 740 described above, and is opened and closed to adjust the amount of discharged air on the upper wall of the suction fan case 741b. A plate 742b is provided.

  The opening / closing plate 742b is a plate-like body having a circular arc shape when viewed from the side, which is disposed horizontally across the entire width of the suction fan 740b. The opening / closing plate 742b and the upper suction fan case 741b are concentrically configured when viewed from the side. The opening / closing plate 742b is configured to be slidable along the outer periphery of the suction fan case 741b. The front end of the shutter adjustment arm 747 is connected to the front end of the opening / closing plate 742b. The base end side of the shutter adjustment arm 747 (the end opposite to the end to which the opening / closing plate 742b is connected) is the center of the suction fan case 741b, that is, the fulcrum shaft disposed at the rotational axis of the suction fan 740b. It is pivotally supported by 743b and rotates around a fulcrum shaft 743b. As the shutter adjustment arm 747 rotates, the opening / closing plate 742b slides along the suction fan case 741b. One end of the tuning wire 744 is connected to the middle portion 748 of the shutter adjustment arm 747 in the longitudinal direction, and the other end of the tuning wire 744 is connected to the detection arm 821 of the rejection processing unit 8. Further, a spring 746 b is connected to the middle part 748 of the shutter adjustment arm 747. As described above, the suction fan 740 includes an air volume adjustment unit including the opening / closing plate 742b, the fulcrum shaft 743b, the spring 746b, and the shutter adjustment arm 747.

  As shown in FIG. 4, the opening / closing plate 742 of the suction fan 740 opens and closes the shutter itself in the vertical direction (FIG. 4A), but the opening / closing plate 742b of the suction fan 740b has the shutter itself in the suction fan case 741b. It opens and closes by sliding along (FIG. 4B). Therefore, in the case of the suction fan 740b, it is not necessary to provide a space for opening and closing the shutter above the suction fan, and the suction fan can be installed in a relatively narrow space.

  When the amount of evacuation is large, the suction fan 740b slides along the suction fan case 741b in the direction of closing the opening / closing plate 742b (downward) in order to increase the amount of discharged air. On the other hand, when the amount of evacuation is small, in order to reduce the amount of discharged air, it slides along the suction fan case 741b in the opening direction (upward direction) of the opening / closing plate 742b. The open / close plate 742b operates in synchronism with the drive of the rejection processing unit 8, similarly to the open / close plate 742. Hereinafter, the relationship between the driving of the waste amount detection mechanism 820 and the operation of the opening / closing plate 742b will be described.

  When the amount of waste increases, the waste amount detection mechanism 820 pulls the tuning wire 744 by rotating the detection arm 821 counterclockwise. By pulling the tuning wire 744, the shutter adjustment arm 747 is pulled and rotated downward, and the opening / closing plate 742b slides in the closing direction (downward). Thereby, the discharge air volume of the suction fan 740b can be increased.

  On the other hand, when the evacuation amount decreases, the evacuation amount detection mechanism 820 causes the tuning wire 744 to be in a slack state as the detection arm 821 rotates clockwise. When the tuning wire 744 is in a slack state, the shutter adjustment arm 747 rotates in the direction in which the spring 746b contracts due to the tension of the spring 746b connected to the midway portion 748, and the opening / closing plate 742b opens (upward). Direction). Thereby, the discharge air volume of the suction fan 740b can be reduced.

  As described above, the chaff sheave 722 of the swing sorting device 720, the shutter 732 of the red fan 730, and the open / close plate 742 of the suction fan 740 are adjusted in synchronization with the waste amount detection mechanism 820 that operates according to the waste flow rate. However, the adjustment of each part is not performed independently, and all the parts are adjusted simultaneously with the operation of the displacement amount detection mechanism 820. Therefore, since all the parts are adjusted according to the squeezing flow rate, that is, the threshing amount, the grain selection efficiency is improved.

The side view of the combine 1 which concerns on embodiment of this invention. The side view of the threshing part 7 of the combine 1 which concerns on embodiment of this invention, and the waste treatment part 8. FIG. The side view of the interlocking mechanism of the rocking | swiveling sorter 720, the red pepper fan 730, the suction fan 740, and the waste amount detection mechanism 820. Side view of the suction fans 740 and 740b of the combine 1 according to the embodiment of the present invention.

Explanation of symbols

720 Oscillating sorting device 722 Chaff sheave 725 Sorting plate 726 Chaff interlocking plate 727 Chaff sheave adjusting arm 728, 735, 744 Tuning wire 730 Kara fan 732 Shutter 742 Opening and closing plate 733 Shutter shaft 734 Shutter lever 740 Suction fan shaft 743 Suction fan shaft 743 Waste chain 820 Waste amount detection mechanism 821 Detection arm 822 Detection rod 823 Detection plate 824 Rotating shaft 825 Chain guide

Claims (3)

A suction fan that absorbs dust generated by the threshing process and discharges it outside the machine;
A fan that sends a selection air for further selecting the grains selected by the threshing process, and has a selection air volume adjusting unit that adjusts the selection air volume,
A waste treatment unit for treating the waste discharged by the threshing process;
In a combine comprising:
An air volume adjusting unit for adjusting the air volume is provided in the suction fan,
The waste treatment unit is provided with a waste amount detection mechanism, and the waste amount detection mechanism and the air volume adjustment unit are interlocked and connected to adjust the air volume adjustment unit according to the waste flow rate. .   The suction fan is configured by a cross flow fan, and the air volume adjusting unit rotates a plate-like body provided at a suction side end of an upper wall of the suction fan according to a discharge flow rate. Item 1. A combine according to item 1. The suction fan is composed of a cross-flow fan, and the air volume adjusting unit slides along the upper wall according to the discharge flow rate on a plate-like body provided at the suction side end of the upper wall of the suction fan. The combine according to claim 1, wherein the combine moves.

Images