JP2019162075A - Combine - Google Patents

Abstract

To provide a combine capable of preventing a threshed material from winding around a member for supporting sieving wires.SOLUTION: A combine includes a threshing cylinder, a receiving net provided under the threshing cylinder, a receiving net support frame 36 for supporting the receiving net from below, and sieving wires 414 supported oscillatably in a cross direction to the receiving net support frame 36 by an arm 7 arranged under the receiving net support frame 36. Hereby, a threshed material is prevented from winding around the arm 7 which is a member for supporting the sieving wires 414.SELECTED DRAWING: Figure 7

Description

  The present invention relates to a combine.

  A combine that is configured to receive a threshing product leaked from a receiving net of a threshing portion with a feed pan and to perform auxiliary swing selection with a sieving line before reaching a chaff sheave is known. By performing auxiliary selection with a sieving line, it is possible to reduce the processing burden of the chaff sheave and to prevent the processed threshing product containing a lot of grains from being discharged from the rear while being loaded on the chaff sheave.

  In the combine described in Patent Document 1, a sieve wire is attached to the rear end portion of the feed pan (Glen pan). However, in such a configuration, the threshing product including swarf and the like is likely to be wound around the frame supporting the sieving line, and if the wound threshing process product is deposited, problems such as hindering the auxiliary sorting by the sieving line occur.

JP 2014-14329 A

  This invention is made | formed in view of the said situation, The objective is to provide the combine which can prevent a threshing processed material from winding around the member which supports a sieve line.

  The combine according to the present invention includes a handling cylinder, a receiving net provided below the handling cylinder, a receiving net support frame that supports the receiving net from below, and an arm disposed below the receiving net support frame. And a sieve line supported so as to be swingable in the front-rear direction with respect to the receiving net support frame. According to this structure, it can prevent that the threshing processed material leaked from the receiving net contacts the arm, and can prevent the threshing processed product from being wound around the member (that is, the arm) that supports the sieving line. In addition, since the sieving line is supported so as to be swingable in the front-rear direction with respect to the receiving net support frame, auxiliary sorting by the sieving line is appropriately performed.

  A swing sorting unit that swings and sorts the threshing processed material leaked from the receiving net by swinging in the front-rear direction, and the arm includes a first arm member attached to the receiving net support frame; Preferably, the second arm member is attached to an oscillating sorting portion and is pivotably attached to the first arm member, and the sieving line is preferably attached to the second arm member. According to such a configuration, the second arm member swings with the swing sorting unit and pivots with respect to the first arm member attached to the receiving net support frame, thereby swinging the sieve line. Can do.

  It is preferable that the arm supports a central portion of the sieving line in the left-right direction. Thereby, a sieving line can be supported with good balance by an arm.

Combine left side view Combine right side view Top view of the combine Diagram showing threshing device and sorting device Perspective view of swing selection part Perspective view showing the periphery of the sieving line Perspective view showing the periphery of the sieving line Top view of sieve line (A) A side view of the sieving line in the first posture, and (b) a side view of the sieving line in the second posture.

  An example of a combine according to the present invention will be described. First, the overall structure of the combine will be briefly described. Next, the threshing device and the sorting device included in the combine will be described, and then the sieve wire support structure will be described in detail.

[Overall structure of combine]
1-3 show the left side surface, right side surface, and plane of the combine 100 of this embodiment, respectively. In the figure, the front-rear direction, the left-right direction, and the up-down direction of the combine 100 are indicated by arrows. The combine 100 includes a traveling device 1, a reaping device 2, a threshing device 3, a sorting device 4, a storage device 5, and a power device 6.

  The traveling device 1 is provided below the body frame 10. The traveling device 1 includes a transmission 11 and a crawler device 12 provided in a pair of left and right. The transmission 11 transmits the power of the power device 6 mounted on the body frame 10 to the crawler device 12. The crawler device 12 causes the combine 100 to travel in the front-rear direction, and turns the combine 100 in the left-right direction.

  The reaping device 2 is provided in front of the traveling device 1. The reaping device 2 includes a reel 21, a cutter (cutting blade) 22, an auger (transverse feed screw) 23, and a conveyer 24. The reel 21 guides the cereal straw in the field to the cutter 22 by rotating. The cutter 22 cuts the cereal bowl guided by the reel 21. The auger 23 collects the cereals cut by the cutter 22 at a predetermined position (the cereal supply port of the conveyor 24). The conveyor 24 conveys the cereals collected by the auger 23 to the front rotor 33 (see FIG. 4) of the threshing device 3.

  The threshing device 3 is provided behind the reaping device 2. The threshing device 3 which is a threshing unit has a handling drum 31. The handling drum 31 is accommodated in the handling chamber 30 (see FIG. 4). The handling drum 31 conveys backward while threshing the cereal by rotating. Moreover, the threshing apparatus 3 has a receiving net 32 provided below the handling drum 31. The receiving net 32 supports the culm conveyed by the handling cylinder 31 and drops the threshing processed product onto the sorting device 4. Below the handling drum 31, a first conveyor 143 and a second conveyor 144 (see FIG. 4), which are screw conveyors for transferring grains, are provided. All of these carry the threshed grain in the horizontal direction.

  The sorting device 4 is provided below the threshing device 3. The sorting device 4 has a swing sorting unit 41 that swings and sorts the threshing processed material leaked from the receiving net 32 by swinging in the front-rear direction. The grains selected by the swing selection unit 41 are transported by the first conveyor 143 and the cereal conveyor 151 and are input into the Glen tank 51 through the input port 153. In addition, the sorting device 4 includes a blower 42 that sends wind toward the swing sorting unit 41. The air blower 42 blows away foreign substances such as sawdust contained in the threshing product. Contaminants such as sawdust are discharged to the outside from a discharge port 45 provided behind the sorting device 4.

  The storage device 5 is provided on the right side of the threshing device 3 and the sorting device 4. The threshing device 3 and the sorting device 4 and the storage device 5 are arranged in parallel on the left and right above the body frame 10. The storage device 5 includes a Glen tank 51 for storing grains. The Glen tank 51 stores the grains that have been conveyed from the sorting device 4 through the first conveyor 143 and the cereal conveyor 151. When discharging the grain in the Glen tank 51, the discharge auger 52 is used. The discharge auger 52 is configured to be rotatable in the vertical and horizontal directions, and can discharge the grains to an arbitrary place.

  The power device 6 is provided below the operation unit 13 and in front of the storage device 5. The power unit 6 includes an engine 61. The engine 61 of the present embodiment is a diesel engine, and converts thermal energy obtained by burning fuel into kinetic energy. More specifically, the engine 61 converts thermal energy obtained by burning fuel into motive power that drives each part such as the traveling device 1. The power unit 6 may be an electric motor that generates power by electricity. The power unit 6 may include both an engine 61 and an electric motor.

  The operation unit 13 is provided in front of the glen tank 51 at the right front portion of the fuselage frame 10. The driver 13 is provided with a driver's seat 14 on which an operator is seated, and a steering handle 15 disposed in front of the driver's seat 14, and various operating tools such as a shift lever, a clutch lever, and switches around them. Is arranged.

[Threshing device]
As shown in FIG. 4, the threshing apparatus 3 includes a handling chamber 30, a handling drum 31, a receiving net 32, and a front rotor 33. The handling chamber 30 is defined by a receiving net 32, a machine casing 300, an upper cover 301, and the like. The machine casing 300 includes an upper cover 301 disposed above the handling cylinder 31, a front wall member 302 disposed in front of the handling cylinder 31, a rear wall member 303 disposed behind the handling cylinder 31, A right side wall member 304 disposed on the right side of the handling drum 31 is attached. The cereals that have been transported by the transport conveyor 24 are fed into the handling chamber 30 by the front rotor 33. The front rotor 33 not only conveys the cereal but also has a function of performing preliminary threshing (pre-threshing).

  The handling drum 31 includes a handling drum shaft 311 extending along the front-rear direction, a scraping screw 312, and a tooth bar (teeth handling member) 313. The handling cylinder 31 rotates about the handling cylinder 311. The handling shaft 311 is rotatably supported by the front wall member 302 and the rear wall member 303. Rotational power from the engine 61 is transmitted to the handle shaft 311. The handling cylinder shaft 311 is a structure formed in a straight line, and supports the scraping screw 312 and the plurality of tooth bars 313.

  The raking screw 312 is disposed in the front portion of the handling drum 31. The raking screw 312 is a structure in which a spiral impeller (raking blade) 312b is detachably formed. The scraping screw 312 scrapes the cereal that has been fed by the front rotor 33. In other words, the scraping screw 312 rotates to take in the cereals that have been fed by the front rotor 33 and feed them back. The raking screw 312 is not limited to the structure in which the spiral impeller 312b is formed, and may have a structure in which a plurality of blades are formed.

  A plurality of tooth bars 313 are arranged around the handling cylinder shaft 311 behind the raking screw 312. The tooth bar 313 is a structure in which a plurality of teeth 313t are arranged in parallel with each other at a predetermined interval. The tooth bar 313 threshs the cereal meal sent out by the stirring screw 312. In other words, the tooth bar 313 swivels and swallows the cereal that the scraping screw 312 sends out, and hits it to drop the threshing. The tooth bar 313 is not limited to a structure having a plurality of teeth 313t, but may have a structure having a spiral blade. In the present embodiment, a plurality of tooth bars 313 and a plurality of plate members 314 provided across the tooth bars 313 form a cylindrical shape as a whole with the internal space of the handling drum 31 and the outer space of the handling drum 31 separated from each other. However, instead of this, a cylindrical rotary body may be provided with a plurality of teeth 313t.

  The receiving net 32 is provided along the lower outer peripheral surface of the handling drum 31 and is formed in a substantially U shape when viewed from the front-rear direction. In the present embodiment, the receiving net 32 is arranged so as to cover the lower part of the rotating body constituted by the plurality of tooth bars 313. The receiving net 32 supports the cereals that are swallowed by the tooth bar 313. The receiving network 32 is mainly configured by a network body 321. The net 321 is a structure formed by stretching wires in parallel at a predetermined interval. The receiving net 32 causes the threshing processed material that has been threshed by the handling cylinder 31 to leak through the gaps in the net body 321. The receiving net support frame 36 supports the receiving net 32 from below. The receiving net support frame 36 extends in the front-rear direction at the center in the width direction of the threshing device 3.

  The threshing device 3 includes an opening 34 (see FIGS. 6 and 7) that allows the handling cylinder 31 to face laterally outward on the left side, and a threshing side cover 35 that is openable and closable with respect to the opening 34 (FIGS. Reference). The left side of the barrel 31 is covered with a threshing side cover 35. The threshing side cover 35 is attached to the machine frame 300 so as to be vertically swingable between a closed position for closing the opening 34 shown in FIGS. 1 and 3 and an open position for opening the opening 34. Therefore, the opening 34 can be opened and closed by swinging the threshing side cover 35 up and down. The operator can perform maintenance of the barrel 31 and the receiving net 32 from the opening 34 by setting the threshing side cover 35 to the open position.

[Sorting device]
As shown in FIG. 4, the sorting device 4 includes a swing sorting unit 41 and a blower unit 42. The swing sorting unit 41 sorts the grain by sieving the threshing product. The air blower 42 sorts the grains by blowing away foreign matters such as sawdust contained in the threshing product.

  As shown in FIG. 5, the swing sorting unit 41 includes a feed pan 411, a chaff sheave 412, a stroller 413, a sieve wire 414, and a swing frame 415. The feed pan 411, the chaff sheave 412, and the stroller 413 are attached to the swing frame 415. A chaff sheave 412 is disposed at the lower rear portion of the feed pan 411, and a stroller 413 is disposed behind the chaff sheave 412. The sieving line 414 is disposed behind the feed pan 411 and above the chaff sheave 412. The sieve wire 414 is supported by the arm 7 attached to the receiving net support frame 36 as will be described later.

  An eccentric cam type swing drive mechanism 410 that swings back and forth in conjunction with the rotation of the shaft 41a extending in the left-right direction is provided below the rear portion of the swing sorting portion 41. The swing sorting unit 41 is configured to swing back and forth by a swing drive mechanism 410. The swing sorting part 41 is disposed between the left and right threshing side plates 37, 38 (see FIG. 6) not shown in FIG. A rubber sheet 418 is attached to the upper edge of the swing frame 415 via a bracket 417 so that the processed threshing product does not fall out from the gap between the swing sorting unit 41 and the threshing side plates 37 and 38.

  The feed pan 411 is a structure that is widely flat. The feed pan 411 receives the threshing processed material that has fallen from the receiving net 32. The feed pan 411 swings back and forth to move the processed threshing product on the feed pan 411 backward while leveling. At this time, the processed threshing is spread evenly in the left-right direction by the fins 411f attached obliquely.

  The chaff sheave 412 has a plurality of sheave plates 412p arranged in parallel with each other at a predetermined interval. The plurality of sheave plates 412p are arranged side by side in the front-rear direction while extending along the left-right direction. The angle of the sheave plate 412p can be adjusted according to the amount of the threshing product. The chaff sheave 412 swings back and forth, sifts the threshing processed product sent from the feed pan 411, lifts the contaminated contaminants, and separates them from the grains. The threshing processed product (only the grain) selected by the chaff sheave 412 passes through the sieve net 416 and is guided by the first cereal plate 431 and falls to the first basket 43, and is sent by the first conveyor 143. Be transported. The threshing processed material remaining on the chaff sheave 412 moves rearward and is sent to the stroller 413.

  The stroller 413 includes a plurality of rack plates 413p arranged in parallel with each other at a predetermined interval. The Strollac 413 swings back and forth, sieves the threshing processed product sent from the chaff sheave 412, supports the relatively large contaminants mixed therein, and separates it from the grains. The threshing processed product selected by the Strollac 413 (which is a grain and a small number of small impurities) is guided by the second flow grain plate 441 and falls to the second basket 44 and sorted by the second conveyor 144. It is reduced and conveyed to the front end side of the device 4 and is subjected to another sorting process. The threshing processed material remaining on the Strollac 413 moves backward and is discharged to the outside.

  The sieve wire 414 has a plurality of wire rods 414s arranged in parallel with each other with a predetermined interval. The sieving line 414 swings in the front-rear direction to screen the threshing processed product sent from the feed pan 411 and hooks a relatively large contaminant mixed in the threshing processed product to separate it from the grain. To do. The threshing processed material selected by the sieving line 414 (which is a grain and a large number of small impurities) falls to the chaff sheave 412 and is further sieved and selected. In this way, the threshing processed product received by the feed pan 411 is oscillated and screened by the sieve line 414 before reaching the chaff sheave 412.

  The air blowing unit 42 is disposed below the front portion of the swing sorting unit 41 and supplies the sorting air toward the swing sorting unit 41. The air blowing unit 42 includes a fan 421 and a fan case 422. In the present embodiment, a fan 421 is disposed below the feed pan 411, and a fan case 422 is disposed so as to cover the fan 421. The fan 421 has a plurality of fan plates 421p attached at a predetermined angle. The fan 421 rotates to send out the wind, thereby blowing away foreign matters placed on the chaff sheave 412 and the stroller 413 and foreign matters dropped from them. The fan case 422 is a structure formed by bending a plate material. The fan case 422 covers the fan 421 and guides the wind sent out by the fan 421 in a predetermined direction.

[Sieving wire support structure]
FIG. 6 shows the threshing device 3 in a state where the handling barrel 31, the receiving net 32, the upper cover 301, the right side wall member 304, and the like are removed. FIG. 7 shows the threshing apparatus 3 in a state where the threshing side cover 35 and the like are further removed. The receiving net support frame 36 extends in the front-rear direction at the center in the width direction of the threshing device 3. The machine wall on the left side of the threshing device 3 is mainly composed of a threshing side cover 35 and a threshing side plate 37. The threshing side plate 37 is provided at the lower left side of the handling chamber 30. The machine wall on the right side of the threshing device 3 is mainly composed of a right side wall member 304 and a threshing side plate 38. The threshing side plate 38 is provided at the lower right side of the handling chamber 30. The receiving net support frame 36 constitutes a part of the machine casing 300, and the receiving net support frame 36 does not swing even if the swing sorting unit 41 swings.

  In the present embodiment, the sieve wire 414 is supported by the arm 7 disposed below the receiving net support frame 36 so as to be swingable in the front-rear direction with respect to the receiving net support frame 36. By arranging the arm 7 below the receiving net support frame 36, the threshing processed product leaked from the receiving net 32 is prevented from coming into contact with the arm 7, and the threshing processed product is wound around the arm 7. Can be prevented. The sieving wire 414 is provided across the left and right sides of the handling chamber 30, and the arm 7 supports the central portion of the sieving wire 414 in the left-right direction. In the present embodiment, no sieving wire is attached to the rear end of the feed pan 411. Note that another sieving line may or may not be attached to the rear end of the feed pan 411.

  The arm 7 includes a first arm member 71 attached to the receiving net support frame 36, and a second arm member 72 attached to the swing sorting unit 41 and attached to the first arm member 71 so as to be rotatable. Have The sieve wire 414 is attached to the second arm member 72. The arm 7 is attached to the receiving net support frame 36 that does not swing, but the first arm member attached to the receiving net support frame 36 while the second arm member 72 swings together with the swing selection unit 41. By rotating with respect to 71, the sieve wire 414 can be swung. In this embodiment, the 1st arm member 71 and the 2nd arm member 72 are each formed with the board | plate material which turned the out-of-plane direction to right and left.

  As shown in FIGS. 7 to 9, the first arm member 71 is relative to the one end portion 71 a attached so as to be rotatable relative to the receiving net support frame 36 and the one end portion 72 a of the second arm member 72. It has the other end part 71b attached so that rotation was possible. The first arm member 71 rotates with the rotation shaft 73 as a fulcrum with respect to the receiving net support frame 36. The rotating shaft 73 is fixed to the mesh support frame 36 via a bracket 74 and is connected to one end 71 a of the first arm member 71 via a bearing 75. The second arm member 72 rotates with respect to the first arm member 71 using the rotation shaft 76 as a fulcrum. The rotating shaft 76 is fixed to the other end 71 b of the first arm member 71 and is connected to one end 72 a of the second arm member 72 via a bearing 77.

  The second arm member 72 has one end portion 72a attached to the other end portion 71b of the first arm member 71 so as to be rotatable relative to the other end portion 71b, and the other end attached to the swing sorting portion 41 (the sieving line 414). Part 72b. The other end portion 72b of the second arm member 72 is fixed to the sieve wire 414, and is fixed by welding in this embodiment. The arm 7 extends in the front-rear direction along the receiving net support frame 36, extends rearward from one end 71 a of the first arm member 71, and reaches the other end 72 b of the second arm member 72. In order to effectively prevent the threshing product from being wound, it is preferable that the arm 7 is in a position hidden by the receiving net support frame 36 in a plan view. The length between both end portions of the second arm member 72 is smaller than the length between both end portions of the first arm member 71, so that when the swing sorting portion 41 is mounted on the threshing machine frame, the arm 7 It hangs out so as not to get in the way. The other end 72b of the second arm member 72 may be fixed to the sieve wire 414 with a fastening member such as a bolt.

  The sieve wire 414 is supported so as to be rotatable about a pivot shaft 414a extending in the left-right direction. As shown in FIG. 8, a pair of pedestals 412s and 412s for supporting both ends of the rotation shaft 414a are attached to the chaff sheave 412. The pair of pedestals 412s and 412s support the rotation shaft 414a via bearings 412b, respectively. In areas where high durability is strongly demanded, such as areas with a lot of sand in the field, it is possible to achieve high durability with this configuration. In areas where high durability is not strongly required, the bearing 412b is provided on only one of the pair of pedestals 412s and 412s, and the other is made of resin without using the bearing 412b. May be configured to be pivotably supported, or may be configured to be configured to support the pivot shaft 414a so that the pair of bases 412s and 412s are both made of resin. Cost can be reduced by adopting a configuration in which the bearing 412b is rotatably supported by resin without using the bearing 412b. In this embodiment, the pedestal 412s is fixed to the chaff sheave 412. However, the pedestal 412s is not limited to this, and may be fixed to the swing frame 415, for example.

  In the present embodiment, the screen line 414 swings in the vertical direction around the rotation shaft 414a in accordance with the back-and-forth swing of the swing sorting unit 41, and the posture of the screen line 414 is as shown in FIG. ) And the second posture shown in FIG. 9B. The first posture is a posture when the swing sorting unit 41 is positioned forward, and the second posture is a posture when the swing sorting unit 41 is positioned rearward. In the second posture, the sieving line 414 rises backward (front low and rear high), and the rear end of the sieving line 414 is higher than the front end of the sieving line 414. For this reason, the threshing processed material put on the sieving line 414 can be thrown up and the selection effect can be enhanced.

  In the first posture, the sieving line 414 is in a state of lowering back (front high and low), and the rear end of the sieving line 414 is lower than the front end of the sieving line 414. For this reason, a threshing processed material can be appropriately sent back, without blocking the conveyance of the threshing processed material mounted on the sieve line 414. As described above, in the present embodiment, when the swing sorting unit 41 is positioned forward, the sieve line 414 is lowered rearward, and when the swing sorting unit 41 is positioned rearward, the sieve line 414 is raised rearward. These may be reversed. Further, from the viewpoint of not hindering the conveyance of the threshing product, it is preferable that the sieving line 414 is in a state of lowering backward as shown in FIG. 9A in at least one of the first posture and the second posture. .

  As shown in FIG. 6, the combine 100 according to the present embodiment includes a protective cover 81 that is disposed so as to cover the pivotal support portion of the rotating shaft 414 a. The protective cover 81 is formed in a plate shape, but is not limited thereto. The protective cover 81 is detachably attached to the inner surface of the threshing side cover 35. When the threshing side cover 35 is removed, the protective cover 81 is also removed. The protective cover 81 greatly protrudes toward the center in the width direction of the threshing device 3 as compared with the protective covers 82 and 83 that protect the power transmission system such as a chain and a belt. Such a protective cover is also provided on the opposite side (that is, the right side) not shown in FIG. 6 for the purpose of protecting the pivotal support portion of the rotating shaft 414a.

  In the present embodiment, an example of a normal combine is shown, but the present invention is not limited to this, and the present invention may be a self-removing combine.

  The present invention is not limited to the embodiments described above, and various improvements and modifications can be made without departing from the spirit of the present invention.

3 Threshing device (threshing part)
4 Sorting Device 7 Arm 31 Handling Cylinder 32 Receiving Net 34 Opening 35 Threshing Side Cover 36 Receiving Net Support Frame 36 Threshing Side Plate 37 Threshing Side Plate 41 Oscillating Sorting Unit 71 First Arm Member 72 Second Arm Member 81 Protective Cover 100 Combine 411 Feed Bread 412 Chaff Sheave 414 Sieve Line

Claims (3)

A barrel,
A receiving net provided below the barrel,
A receiving net support frame for supporting the receiving net from below;
A combine comprising: a sieve line supported by an arm disposed below the receiving net support frame so as to be swingable in the front-rear direction with respect to the receiving net support frame. A swing selection unit that swings and sorts the threshing product leaked from the receiving net by swinging back and forth,
The arm includes a first arm member attached to the receiving net support frame, and a second arm member attached to the swing sorting unit and rotatably attached to the first arm member. And
The combine according to claim 1, wherein the sieving wire is attached to the second arm member.   The combine according to claim 1 or 2, wherein the arm supports a central portion of the sieving line in the left-right direction.

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