JP2017051168A - combine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent waste straws from being discharged toward an unreaped area side.SOLUTION: The combine includes: a travel machine body including a right/left pair of travel devices; and a threshing device 4 threshing and processing reaped crops. The threshing device 4 is arranged in the travel machine body in an eccentric state to the right or left with respect to a center position in a machine body lateral width direction. A waste straw cover 90 is arranged in a rear part of the threshing device 4, the waste straw cover receiving waste straws discharged from the threshing device and discharging the waste straws from a lower side to the outside. An inner side side wall 90B positioned on an inner side in the machine body lateral width direction in the waste straw cover 90 has an inclined posture positioned on a machine body right/left center position side toward a machine body rear side.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a combine including a traveling machine body including a pair of left and right traveling devices and a threshing device for threshing a harvested crop.

  The combine is provided with a reaping unit that harvests planted crops while traveling at the front of a traveling machine body including a pair of left and right crawler traveling apparatuses as a traveling apparatus, and the threshing device that threshs the harvested crops on the traveling machine body, It is mounted and supported in a state where a grain tank for storing the grain obtained by the processing is arranged side by side. That is, the threshing device is provided in the traveling machine body in a state of being deviated to the left side with respect to the center position in the machine body width direction.

  And there exists what made it discharge | emit it outside from the machine body rear side of a threshing apparatus after the threshing process by the threshing apparatus. In this type of combine, a waste straw cover that receives the waste straw discharged from the threshing device and discharges it from the lower side to the outside is provided behind the threshing device, and the waste straw cover is substantially the same width as the lateral width of the threshing device. The side walls on the left and right sides of the exhaust wall cover are provided in a posture along the longitudinal direction of the machine body (see, for example, Patent Document 1).

JP 2012-244924 A

  In the above conventional configuration, the waste straw discharged from the waste straw cover is guided by the side walls on both the left and right sides while preventing splashing outward in the lateral direction, and is directed rearward within the lateral width of the threshing device in plan view. Discharged. As described above, the threshing device is provided in the traveling machine body in a state of being biased to the left side with respect to the center position in the lateral direction of the aircraft body. Will be.

  In this way, when the waste straw is discharged to the position deviated to the left with respect to the center position in the lateral direction of the machine body, the waste straw is directed rearward within the lateral width range of the threshing device in plan view by the draining cover. Even in the case of being discharged, a part of the discharged discharger may be discharged to an uncut region located on the outer side of the aircraft side.

  When the waste straw is discharged to the uncut area, the waste straw that has fallen on the uncut crop becomes a hindrance during the cutting work, or the traveling device is discharged to the ground. There were disadvantages such as trampling the waste. When harvesting a type of crop that has a large amount of threshing, the amount of waste straw increases and there is a high risk that a part of the waste straw will be discharged to the uncut region. It was.

  Therefore, it has been desired to prevent the waste straw from being discharged toward the uncut area.

The characteristic configuration of the combine according to the present invention is as follows:
A traveling machine body including a pair of left and right traveling devices and a threshing device for threshing a harvested crop are provided.
The threshing device is provided in the traveling machine body in a state of being biased to the left or right with respect to the center position in the lateral direction of the machine body,
Behind the threshing device, provided with a waste wall cover that receives the waste wall discharged from the threshing device and discharges it from the lower side to the outside,
The inner side wall located on the inner side in the width direction of the fuselage in the exhaust wall cover is in an inclined posture located on the left and right center position side toward the rear side of the fuselage.

  According to the present invention, when the harvesting operation is performed while the traveling machine body is traveling, the threshing apparatus performs the threshing process of the crop, and the waste straw after the threshing process is discharged to the outside from the rear side of the threshing apparatus. At that time, the waste straw discharged from the threshing device is received by the waste straw cover provided at the rear of the threshing device, and discharged from the lower side of the draining cover to the outside.

  The drain wall cover has an inclined posture in which the inner side wall is located closer to the left and right center position side of the aircraft toward the rear side of the aircraft, so when discharging the waste wall received from the threshing device to the outside, At the side location, by guiding the waste straw along the inner side wall, the waste straw can be discharged as close to the left and right center position as possible.

  As a result, even when the processing amount of the threshing processed product is increased, it is possible to prevent the waste straw from being discharged toward the uncut region by bringing the waste straw as close as possible to the left and right center position of the machine body.

  In the present invention, it is preferable that the outer side wall located on the outer side in the lateral direction of the fuselage in the exhaust wall cover is in a longitudinal posture along the longitudinal direction of the fuselage.

  According to this structure, since the outer side wall of the exhaust wall cover is in a front-and-back orientation along the longitudinal direction of the machine body, the internal space on the rear side of the exhaust wall cover extends in the lateral direction and is discharged from the threshing device inside the exhaust wall cover. There is little possibility that the waste straw will clog or get stuck, and it can be smoothly discharged to the outside.

In the present invention,
A grain tank for storing the grain obtained by the threshing device is provided in a state aligned with the threshing device and the machine body width direction,
Between the threshing device and the grain tank, a fuel tank is provided at a position adjacent to the inner side wall in the exhaust wall cover,
It is preferable that the inner side wall extends below the upper surface of the fuel tank.

  According to this configuration, it is possible to deploy the fuel tank in a compact manner without causing an increase in size such as projecting outward from the fuselage by effectively using the empty area between the threshing device and the grain tank.

  Since the inner side wall of the exhaust wall cover is in an inclined posture in which the inner side wall is located closer to the left and right center position side toward the rear side of the body, the inner side wall becomes closer to the fuel tank. As a result, the exhaust wall is guided toward the fuel tank by the inner side wall, but the inner side wall extends to a lower side than the upper surface of the fuel tank, so that the exhaust wall discharged from the exhaust wall cover becomes the upper surface of the fuel tank. There is little risk of falling on.

  Therefore, in a configuration in which the fuel tank is arranged in a compact manner by effectively using the empty area, it is possible to prevent the waste straw from accumulating on the upper part of the fuel tank while preventing the waste straw from being discharged toward the uncut area. Can do.

  In the present invention, it is preferable that the rear end of the inner side wall extends to a position close to the side surface of the fuel tank.

  According to this configuration, it is possible to incline the inner side wall toward the left and right center position side of the body using the space between the threshing device and the fuel tank without waste.

  In the present invention, the downflow guide body in the inclined posture extends from the outer side wall located on the outer side in the lateral direction of the fuselage toward the inner side wall and is located downward toward the inner side in the lateral direction of the fuselage. It is suitable if it is provided.

  According to this configuration, the waste straw discharged from the threshing device is flow-down guided from the outer side in the body width direction toward the inner side in the body width direction by the flow guide body provided in an inclined posture inside the discharge cover. And discharged to the outside from the lower side.

  Inside the waste wall cover, the waste wall can be discharged to the outside of the aircraft in the state of being inward in the lateral direction of the fuselage, and it is reliably avoided that the exhaust wall is discharged to the uncut area on the lateral side in the lateral direction of the aircraft. Can be made.

  In the present invention, it is preferable that the flow guide body is provided on the outer side of the fuselage cover with respect to the center position in the width direction of the fuselage.

  The flow-down guide body guides the discharge wall toward the inner side in the lateral direction of the fuselage.For example, when the flow-down guide body is provided closer to the vehicle body side than the center position in the horizontal direction of the aircraft, If the area through which the waste straw passes becomes narrow and a large amount of waste straw is discharged, the waste straw may clog inside the waste straw cover and the discharge process may be hindered.

  On the other hand, according to the present configuration, the flow guide body is provided on the outer side of the fuselage cover with respect to the lateral width direction center position of the exhaust wall cover, and therefore, the smooth discharge process is less likely to cause the exhaust wall to be clogged. It can be carried out.

  In the present invention, the flow guide body includes a steeply inclined portion having a large inclination angle with respect to the horizontal plane at the guide start end side position located on the upper side, and the inclination angle with respect to the horizontal plane at the guide end side position located on the lower side. It is preferable to have a small gentle slope.

  According to this configuration, the waste straw guided by the flow guide body is guided by the steep slope portion located at the guidance start end location, and subsequently, at the gentle slope portion located at the guide end location location. Guided. Since the steeply inclined portion has a large inclination angle with respect to the horizontal plane, the waste straw is guided in a vigorous state. The waste straw guided in a state where the momentum is applied is vigorously guided toward the horizontal direction or a direction close to the horizontal direction at the gently inclined portion and discharged to the outside.

  By configuring in this way, the flow-down guide body has a compact shape with a short overall length, and can guide the discharge wall while flowing down vigorously and release it toward the inner side in the body width direction.

  In the present invention, it is preferable that the flow guide body includes a horizontal portion in a horizontal posture on the gentle slope portion.

  According to this configuration, the waste straw guided by the steeply inclined portion is discharged in a substantially horizontal direction by the horizontal portion of the horizontal posture, thereby releasing further toward the inward side in the body width direction. Can be made.

In the present invention,
The threshing device includes a handling cylinder that rotates around a front and rear axis and a receiving net provided in an arc shape along an outer peripheral portion of the handling cylinder, and a threshing below the handling room. Equipped with a rocking sorter that sorts processed materials,
The upper end position of the guide start end side portion of the flow guide body is positioned near the rotation axis between the rotation axis of the handling cylinder and the lower end of the receiving net in the vertical direction,
It is preferable that the lower end position of the guide terminal side portion of the flow guide body is positioned between the lower end of the rear wall of the handling chamber and the upper end of the swing sorting device in the vertical direction.

  According to this configuration, the crop is threshed by the handling cylinder and the receiving net that rotate around the longitudinal axis in the handling chamber, and the threshing processed material leaking below the handling chamber is removed from the grain by the swing sorting device. Sorted into dust such as straw. The grain is stored in the grain tank, and the waste straw is discharged backward from the rear end of the handling room.

  For the oscillating sorting device, sorting wind is supplied from the front side, and fine dust is discharged to the rear together with a drainer. This sorting air is discharged to the rear of the threshing device together with dust through an opening formed between the lower end of the rear wall of the handling chamber and the upper side of the swing sorting device. At the rear end portion of the handling chamber, the exhaust wall is discharged toward the rear as the handling cylinder rotates.

  And the upper end position of the guidance start end side location of the flow-down guide body is located near the rotation axis between the rotation axis of the handling cylinder and the lower end of the receiving net in the vertical direction. That is, the position where the flow guide body starts to guide the waste straw is a high position near the rotational axis of the handling cylinder. As a result, since the guidance can be started from a high position with respect to the waste straw discharged from the handling chamber, it is easy to guide the waste straw to flow down.

  The lower end position of the guide terminal side portion of the flow guide body is located between the lower end of the rear wall of the handling chamber and the upper end of the swing sorting device in the vertical direction. Between the lower end of the rear wall of the handling chamber and the upper end of the swing sorting device is a place through which the sorting air passes. When the waste straw guided down by the flow guide body reaches the guide end side location, the sorting wind acts, and the sorting wind can be used to discharge the waste straw toward the rear side and stay. The waste straw can be discharged smoothly without any trouble.

In the present invention,
The threshing device includes a handling cylinder that rotates around a front and rear axis and a receiving net provided in an arc shape along an outer peripheral portion of the handling cylinder, and a threshing below the handling room. It is preferable that the apparatus includes a swing sorting device that sorts a processed product, and the gentle slope portion is positioned between the lower end of the rear wall of the handling chamber and the upper end of the swing sorter in the vertical direction. .

  According to this configuration, since the gently inclined portion is positioned between the lower end of the rear wall of the handling chamber and the upper end of the swing sorting device in the vertical direction, the drain wall guided along the gently inclined portion. The sorting wind will act on.

  In other words, since the guide action by the sorting wind is received in a wide range in the gently inclined portion, it is possible to more accurately perform the smooth discharge without causing the exhaust fan to stay.

It is a whole side view of a combine. It is a whole top view of a combine. It is a rear view of a combine. It is a vertical side view of a threshing apparatus. It is a vertical rear view of a threshing apparatus. It is a top view of a waste wall cover. It is a perspective view of a flow guide. It is a side view of a threshing apparatus. It is a power transmission diagram. It is a vertical front view which shows a transmission structure. It is a side view which shows a transmission structure. It is a perspective view which shows the support structure of a wire receiving member. It is a partially longitudinal rear view of a threshing apparatus. It is a disassembled perspective view of a 4th cover body. It is a perspective view which shows the cover of a threshing apparatus.

  Hereinafter, embodiments of a combine according to the present invention will be described with reference to the drawings.

〔overall structure〕
FIG. 1 and FIG. 2 show a normal combine that harvests crops such as rice and wheat. This combine harvests and conveys planted cereals as crops to be harvested to the front of a traveling machine V equipped with a pair of left and right crawler type traveling devices 2 at the lower part of the machine frame 1 and transported backwards. The part 3 is connected so as to be swingable up and down. And the traveling machine body V handles and processes the harvested cereal rice cake as a crop conveyed from the harvesting and conveying unit 3 on the machine body frame 1, and the threshing processed product obtained by the handling process is processed with grains and waste straws. Threshing device 4 for sorting into grains, kernel 5 for storing kernels obtained by threshing device 4, kernel discharging device 6 for discharging kernels stored in kernel tank 5 to the outside of the machine, maneuvering A driving unit 7 and the like on which a person gets on and performs a driving operation are provided.

  The operation unit 7 is located on the right side of the front part of the machine body, and a grain tank 5 is provided behind the operation unit 7. A driving engine 8 is provided below the operation unit 7. In the traveling machine body V, the threshing device 4 and the grain tank 5 are arranged in the left-right direction with the threshing device 4 positioned on the left side and the grain tank 5 positioned on the right side. As shown in FIG. 3, the threshing device 4 is provided in the traveling machine body V in a state of being biased to the left with respect to the center position in the machine body width direction.

  This combine is configured as a full-pile-feeding type in which the planted cereal culm is cut and harvested, and all the harvested cereal culm is put into the threshing device 4.

  In this embodiment, when defining the front-rear direction of the aircraft, it is defined along the aircraft advancing direction in the working state, and when defining the left-right direction of the aircraft, the left-right direction is defined as viewed in the aircraft advancing direction. . That is, the direction indicated by the reference symbol (F) in FIGS. 1 and 2 is the front side of the aircraft, and the direction indicated by the reference symbol (B) in FIGS. The direction indicated by reference sign (L) in FIG. 2 is the left side of the aircraft, and the direction indicated by reference sign (R) in FIG. Therefore, the left-right direction of the body corresponds to the lateral direction of the body.

  The cutting and conveying unit 3 is a feeder that conveys the harvested cereals harvested by the harvesting processing unit 9 toward the threshing device 4 on the rear side of the aircraft as the aircraft travels. 10, and a hydraulic cylinder 11 for lifting and lowering that is stretched over the body frame 1 and the feeder 10 is extended and retracted, and is supported so as to be swingable up and down around the horizontal axis P1.

  The harvesting processing unit 9 is a pair of left and right dividers 13 for weeding a harvesting frame 12 as a frame that supports the entire harvesting processing unit 9, and a planted cereal that is to be harvested and a planted cereal that is not to be harvested. And a rotating reel 14 for scraping the planted culm to be harvested backward, a clipper-shaped cutting blade 15 for cutting and harvesting the stock side of the planted culm to be harvested, and harvested cereal after cutting An auger 16 is provided that feeds the scissors laterally to the middle in the left-right direction, gathers them, and feeds them back.

  As shown in FIG. 1, the feeder 10 includes a pair of left and right pairs in a rectangular tube-like feed case 17 that extends across a driving wheel body 18 located on the rear upper side and a driven wheel body 19 located on the front lower side. The endless rotating chain 20 is wound, and a locking conveyance body 20a (see FIG. 4) is installed over the pair of left and right endless rotating chains 20 at a predetermined pitch. An inlet communicating with the cutting processing unit 9 is formed at the front end of the feed case 17, and the rear end of the feed case 17 is connected to the threshing device 4. Then, the endless rotating chain 20 is rotated to convey the harvested crop (cutted grain culm) delivered from the cutting processing unit 9 toward the threshing device 4.

[Threshing equipment]
Next, the threshing apparatus 4 will be described.

As shown in FIGS. 4 and 5, the threshing device 4 includes side wall portions 24 and 25 (see FIG. 5) located on the left and right sides, a front wall portion 26 located at the front end portion, and a rear wall portion located at the rear end portion. 27 (see FIG. 4), a top plate 21 located at the upper part is provided, and in the internal space formed therein, a handling chamber 28 is provided at the upper part, and a sorting unit 29 is provided below the handling room 28. The harvested cereal meal is conveyed by the feeder 10 and is supplied into the handling chamber 28 from the inlet 30 at the front end.

In the handling chamber 28, there is provided a handling cylinder 22 that is rotationally driven around a horizontal axis X1 facing the front and rear of the machine body to handle and process crops. The handling cylinder 22 includes a handling cylinder shaft 31 that is rotatably supported around the horizontal axis X1 across the front wall portion 26 and the rear wall portion 27, and is configured to rotate integrally around the handling cylinder shaft 31. ing. The handling shaft 31 is rotationally driven by power from the engine 8. The handling cylinder 22 is driven and rotated clockwise (clockwise) in the front view of the machine body.

  The handling cylinder 22 is formed in a disk shape and is connected to and fixed to the handling cylinder shaft 31 so as to be integrally rotatable, and the handling cylinder 22 is distributed and arranged at equal intervals in the circumferential direction of the handling cylinder 22. A plurality of support rods 33 connected to each other, and bar-shaped teeth 34 protruding from the plurality of locations arranged in the axial direction of the support rods 33 toward the outer peripheral side of the treatment drum 22 are provided.

  An arc-shaped receiving net 23 is provided on the lower half of the outer peripheral portion of the handling cylinder 22. Although not described in detail, the receiving net 23 connects a large number of arc-shaped horizontal rails and vertical rails along the axial direction connecting the horizontal rails to form a large number of passage holes for passing the grains. It is comprised with the network of the known structure made. The top plate that covers the upper side of the handling chamber 28 is provided with a dust feeding valve 35 that transports and guides the processed material toward the rear side of the machine body along the rotational axis direction of the handling barrel 22 as the handling barrel 22 rotates. It has been.

  As shown in FIG. 4, the sorting unit 29 located below the handling chamber 28 includes an oscillating sorting device 36 that performs sorting while transferring the processed material leaked downward from the receiving net 23, and an oscillating sorting device 36. A first thing recovery unit 37 that recovers the grain as the first thing that has leaked from the second, and a second thing recovery part 38 that recovers the second thing such as a grain with a branch leaked from the swing sorting device 36; , And a tang 39 for supplying the sorting wind to the swing sorting device 36. The red pepper 39 is configured to generate a sorting wind in accordance with the rotation of the red pepper shaft 39a which is a rotating shaft provided in a state of penetrating the threshing device 4 in the lateral direction.

  The first thing collection | recovery part 37 is comprised so that the collected grain may be conveyed laterally outward of the threshing apparatus 4 with the transverse feed screw 37a. And the grain collected in the first thing collection | recovery part 37 is conveyed upward by the grain conveying apparatus 40 (refer FIG. 2), after being conveyed laterally outward of the threshing apparatus 4, and a grain tank. 5 is stored.

  The second thing collection | recovery part 38 is comprised so that the collected second thing may be conveyed laterally outward of the threshing apparatus 4 with the transverse feed screw 38a. And after the 2nd thing collect | recovered in the 2nd thing collection | recovery part 38 is conveyed laterally outward of the threshing apparatus 4, it is returned by the 2nd thing reduction | restoration apparatus 41 in the handling chamber 28, and is handled. The

  The swing sorting device 36 includes a sheave case 42 having a rectangular frame shape in plan view, and in the sheave case 42, a first gren pan 43, a second gren pan 44, a sieve wire 45, a chaff sheave 46, a glensieve 47, and a Strollac 48. Etc.

  The sheave case 42 is supported so that the front side of the body is slidable back and forth by a slide support mechanism (not shown), and a crank-type swing drive unit 52 is provided at a lower portion of the rear side of the sheave case 42. By the operation of the swing driving unit 52, the rear portion of the sheave case 42 is driven to swing by circular motion. Accordingly, the entire sheave case 42 is configured to perform a back-and-forth swing motion having a vertical component.

  The first gren pan 43 is configured by a plate body having a substantially waveform shape when viewed from the side, and is provided at the upper end (front end) in the transfer direction of the processed material in the swing sorting device 36, and in the transfer direction in the handling chamber 28. The processed material leaked from the upper side is transferred backward.

  The sieving wire 45 is composed of a piano wire or the like, is extended in a cantilevered manner from the lower end in the transfer direction of the first grain pan 43 toward the lower side in the transfer direction, and the processed product fed from the first grain pan 43 is moved backward. The grain and the second thing are allowed to leak downward while being transferred.

  Similar to the first Glen pan 43, the second Glen pan 44 is configured by a plate body that has a substantially corrugated shape when viewed from the side, and is positioned on the lower side and the lower side in the transfer direction of the first Glen pan 43. The processed product leaked from the lower side in the processed product transfer direction and the processed product leaked from the sieve wire 45 are transferred backward.

  The chaff sheave 46 is located on the lower side of the second grain pan 44 in the transfer direction, and the treated product sent out from the second grain pan 44, the treated product leaked from the sieve wire 45, and leaked from the receiving net 23 of the handling chamber 28. About the processed material, a grain and a second thing are allowed to leak downward while rocking and transferring.

  The grain sheave 47 is formed of a crimp net having a large number of openings for passing grain, and is located on the lower side of the chaff sheave 46 and is supported over the left and right side plates of the sheave case 42. The grain sieve 47 swings and transfers the processed material leaked from the chaff sheave 46 to cause the grain to leak to the first thing collection section 37 below, and the second thing is the second thing collection section 38 on the lower side in the transfer direction. Transport to.

  The stroller 48 is provided on the lower side of the chaff sheave 46 in the transfer direction. The Strollac 48 is composed of a plurality of plate bodies formed in a sawtooth shape, and can receive and move the processed material backward. Processed items such as waste straws that have not leaked through the Strollac 48 are discharged outward from the rear dust outlet.

[Transmission structure]
As shown in FIG. 9, the motive power from the engine 8 provided below the operation unit 7 located on the right side of the machine body is transmitted to the left side of the threshing device 4 via the tang shaft 39a, and the threshing device 4 is transmitted from the tang shaft 39a. Are transmitted to each part of the threshing device 4, that is, the first thing recovery part 37, the second thing recovery part 38, and the swing drive part 52 through a belt transmission mechanism 55 for threshing provided on the left side of the threshing.

  As shown in FIGS. 10 and 11, power is transmitted from the left end portion of the rod shaft 39 a to the relay transmission shaft 57 for driving the barrel through the first belt transmission mechanism 56. Power is transmitted from the relay transmission shaft 57 to the feeder drive shaft 59 via the second belt transmission mechanism 58. Although not shown, power is transmitted from the feeder drive shaft 59 to each part of the cutting and conveying unit 3.

  The first belt transmission mechanism 56 includes a first drive pulley 60 provided on the rotary shaft 39a, a first driven pulley 61 provided on the relay transmission shaft 57, and a first transmission belt 62 wound around them. A tension mechanism 63 that applies tension to the first transmission belt 62 is provided. The first belt transmission mechanism 56 is tensioned by the tension mechanism 63 and always maintains the transmission state.

  The second belt transmission mechanism 58 includes a second drive pulley 64 provided on the relay transmission shaft 57, a second driven pulley 65 provided on the feeder drive shaft 59, and a second transmission belt 66 wound around them. The tension ring body 67 and a tension arm 68 that supports the tension ring body 67 are provided. The tension arm 68 is fitted on the feeder drive shaft 59 so as to be swingable. When the pulling operation is performed via the operation wire 70 by the operation of the cutting clutch lever 69 provided in the operating unit 7, the tension arm 68 swings and the tension is applied to the second transmission belt 66. When the operation is released, the tension state is released. The tension ring body 67 is oscillated and biased toward the tension release side by a spring 71.

  Therefore, the second belt transmission mechanism 58 is a belt tension type cutting mechanism that can be switched between an on state where power is transmitted to the cutting processing unit 9 and a cutting state where power transmission is not performed based on the operation of the cutting clutch lever 69. Configure the clutch.

  The tension ring body 67 is supported by a support shaft 72 provided in a state where the tension arm 68 is inserted. The support shaft 72 protrudes on the opposite side to the tension ring body 67, and the operation wire 70 absorbs the stroke. It is connected to the projecting portion on the opposite side of the support shaft 72 through a spring 73. In this manner, the support structure of the tension ring body 67 is simplified by using the support shaft 72 also as a wire connecting portion.

  The second belt transmission mechanism 58 is provided in a state of being located on the laterally outer side of the threshing device 4 with respect to the first belt transmission mechanism 56. The second belt transmission mechanism 58 is more frequently subjected to maintenance work such as replacement of the transmission belt than the first belt transmission mechanism 56. Therefore, by providing the second belt transmission mechanism 58 on the laterally outward side from the first belt transmission mechanism 56, maintenance work such as repair and inspection of the second belt transmission mechanism 58 can be easily performed from the outside of the machine body. it can.

  A wire receiving member 74 that supports an end portion of the outer wire of the operation wire 70 is attached to a support stay 75 that is cantilevered from the side wall portion 24 of the threshing device 4. As shown in FIG. 12, the wire receiving member 74 extends further laterally outward from the connection position with respect to the support stay 75 and bends the belt plate material in a substantially Z shape so as to extend in a direction approaching the tension arm 68. Is formed. Even when the second belt transmission mechanism 58 is located away from the side wall portion 24 of the threshing device 4, the operation wire 70 is pulled straight and the cutting clutch can be smoothly turned on and off.

  [Covering Body of Threshing Device] As described above, as shown in FIG. 8, a threshing belt transmission mechanism 55, a first belt transmission mechanism 56, a second belt transmission mechanism 58, etc. Therefore, the first cover body 76, the second cover body 77, and the third cover body 78 made of synthetic resin are provided so as to cover the outer sides thereof. A portion corresponding to the handling chamber 28 is provided with a fourth cover body 79 that covers the outer side thereof.

  As shown in FIGS. 10 and 13, the first cover body 76, the second cover body 77, and the third cover body 78 are each provided with a locked member 80 provided at the lower portion on the side wall portion 24. The upper part is fastened to the fixing part 83 provided on the side wall part 24 by the knob bolt 82 and fixed. When the tightening of the knob bolt 82 is released, each of the cover bodies 76, 77, 78 can swing around the front / rear axis X3 by the locking portion 81 and can be easily removed.

  As shown in FIGS. 10, 13, and 15, the second cover body 77 and the third cover body 78 located on the lower side of the three cover bodies 76, 77, 78 are connected to each other by the knob bolt 82. It has a shape recessed into the body side. The fourth cover body 79 is provided in a state in which the position of the outer surface portion in the left-right direction is the same position as the outer surface portions of the recessed portions 77 a and 78 a of the second cover body 77 and the third cover body 78. Since the first cover body 76 includes the two belt transmission mechanisms 56 and 58 as described above, the first cover body 76 is provided in a state of being located on the outer side of the second cover body 77. Since the fastening part by the knob bolt 82 is recessed toward the inward side of the machine body, the planted cereal is caught on the knob bolt 82, and the planted cereal is torn off or the stem swarf is attached to the knob bolt 82. Can be avoided.

  A large opening 84 for maintenance formed in a rectangular shape in a side view is formed in the side wall portion 24 at a place where the fourth cover body 79 is provided, and the fourth cover body 79 is closed to cover the opening 84. It is configured to be able to swing open and close between a state and an open state that swings outward. That is, the fourth cover body 79 is supported so as to be swingable around the longitudinal axis X <b> 2 with respect to the upper portion of the left side wall portion 24. When the fourth cover body 79 is opened, the receiving net 23 can be removed or attached through the opening 84. The fourth cover body 79 can be held in an open state by a gas damper (not shown).

  As shown in FIGS. 13 and 14, the fourth cover body 79 includes an inner wall plate 79a adjacent to the receiving net 23 in the closed position, an outer wall plate 79b positioned at a left outer side of the inner wall plate 79a, and an inner wall. A front wall plate 79c extending between the front end of the plate 79a and the front end of the outer wall plate 79b, a rear wall plate 79d extending between the rear end of the inner wall plate 79a and the rear end of the outer wall plate 79b, the inner wall plate 79a and the outer wall plate 79b and the front The bottom plate 79e and the like extending over the lower end portions of the wall plate 79c and the rear wall plate 79d are provided, and are formed in a substantially rectangular box shape.

On the inner side of the fourth cover body 79, a pair of front and rear guide portions 86 that enter the lower side of the receiving net 23 at the closed position of the fourth cover body 79 are provided. The guide portion 86 has an inclined guide surface 86A that extends downward from the upper and lower intermediate portion of the inner wall plate 79a in a state in which the amount of downward penetration of the receiving mesh 23 increases toward the lower side. Each of the surface 86B, the rear vertical surface 86C, and the bottom surface 86D is provided, and is formed in a substantially triangular box shape when viewed from the front.

  Most of the objects to be filtered filtered from the left end portion of the receiving net 23 where the amount of threshing product to be leaked increases can be guided to the left and right center side of the swing sorting device 36 by the inclined guide surface 86A of the guide portion 86. it can. As a result, it is possible to prevent a sorting defect from occurring in the oscillating sorting device 36 due to the sorting objects leaking from the receiving network 23 being concentrated and supplied to the left end side of the oscillating sorting device 36. it can.

  And the guide part 86 is made into the structure connected with a volt | bolt so that attachment or detachment with respect to the inner wall board 79a is carried out, and the opening K is formed in the location in which the guide part 86 in the inner wall board 79a is mounted | worn. In this configuration, when the guide portion 86 is removed from the inner wall plate 79a, the inside of the fourth cover body 79 is opened through the opening K. , Repair tools and parts). When the guide portion 86 is attached, the opening K is closed, so that the stored item is not exposed to the outside.

[Drainer cover]
Behind the threshing device 4, there is provided a draining cover 90 that receives the waste straw discharged from the threshing device 4 and discharges it from the lower side to the outside. As shown in FIGS. 2, 3 and 6, the exhaust wall cover 90 is located on the left side of the body as the outer side in the lateral direction of the body, and has a substantially trapezoidal outer side wall 90 </ b> A in side view, and the inward side in the lateral direction of the body As shown in FIG. 1, the inner side wall 90B is substantially trapezoidal in a side view, and a rear wall 90C is located on the rear side of the body. A cover body having a substantially U-shaped cross-sectional shape in a plan view in which the side and the lower side are opened is formed.

  The waste wall cover 90 is supported by connecting the front end portion of the outer side wall 90A and the front end portion of the inner side wall 90B to the side wall portions 24, 25 on both the left and right sides of the threshing device 4 with bolts at a plurality of vertical positions.

  As shown in FIG. 6, the outer side wall 90 </ b> A has a front-rear posture along the front-rear direction of the aircraft, and the inner side wall 90 </ b> B has an inclined posture that is located on the right side of the aircraft, that is, on the left-right center position side. Yes. As shown in FIG.2 and FIG.3, the fuel tank 91 is arrange | positioned by using the empty area | region in the left-right direction intermediate part between the threshing apparatus 4 and the grain tank 5 at the body rear side of the empty area. . The inner side wall 90 </ b> B is located at a position adjacent to the fuel tank 91.

  As shown in FIG. 3, the inner side wall 90 </ b> B extends below the upper surface of the fuel tank 91. As shown in FIGS. 2 and 6, the rear end of the inner side wall 90 </ b> B is a side surface 93 of the fuel tank 91. It extends to a position close to. Specifically, the inner side wall 90 </ b> B extends from the right side of the rear end portion of the threshing device 4 toward the diagonal direction on the right rear side, and extends to the rear of the fuselage from the rear end of the fuel tank 91. Yes. With this configuration, it is possible to prevent the waste straw discharged by the waste straw cover 90 from falling on the fuel tank 91.

  As shown in FIGS. 5 and 6, a flow guide body 94 in an inclined posture is provided in the exhaust wall cover 90, extending from the outer side wall 90 </ b> A toward the inner side wall 90 </ b> B and positioned downward toward the right side of the machine body. The flow down guide body 94 is provided on the left side of the machine body with respect to the center position in the machine body width direction of the exhaust wall cover 90. That is, as shown in FIG. 5, the entire flow down guide body 94 is provided in a state of being biased to the left side of the machine body from the center position in the machine body width direction of the exhaust wall cover 90 in the longitudinal direction of the machine body.

  As shown in FIGS. 6 and 7, the flow-down guide body 94 is in a state extending in the front-rear direction so as to substantially block the inner space of the discharge wall cover 90 along the front-rear direction at the upper side portion of the discharge wall cover 90 in a side view of the machine body. Is provided. The upper end position of the guide starting end side portion of the flow guide 94 is located at a high position near the rotation axis between the rotation axis X1 of the barrel 22 and the lower end of the receiving net 23 in the vertical direction. The lower end position of the guide terminal side portion of the body 94 is located between the lower end of the rear wall 95 of the handling chamber 28 and the upper end of the swing sorting device 36 in the vertical direction.

  As shown in FIGS. 4 and 6, the receiving net 23 does not exist at a location corresponding to the flow guide body 94, but the rear end portion of the handling cylinder 22 faces. When the description is added, the receiving net 23 is provided in a state of being positioned inside a handling chamber 28 that is partitioned forward and backward by a front wall (not shown) and a rear wall 95. The handling cylinder 22 extends forward from the front wall of the handling chamber 28 and extends rearward from the rear wall 95 of the handling chamber 28. The handling drum 22 is provided with a spiral blade 97 for carrying in crops on the front side, and provided with the same tooth handling 34 as that in the handling chamber 28 on the rear side of the rear wall 95. The rear wall 95 is formed with a substantially U-shaped notch so as to allow rotation of the handling cylinder 22 and allow passage of crops.

  What passes through the rear wall 95 of the handling chamber 28 and is discharged rearward is waste straw such as stalk waste that has not leaked through the receiving net 23. The waste straw is discharged rearward and outward from the rear end portion of the threshing device 4. Of the threshing processed material that has leaked through the receiving net 23, the waste straw that has not leaked from the swing sorting device 36 is also discharged to the rear outside of the threshing device 4.

  As shown in FIG. 5, the flow down guide body 94 includes a steeply inclined portion 98 having a large inclination angle with respect to the horizontal plane at the guide start end side position located on the upper side, and the guide end side position positioned on the lower side with respect to the horizontal plane. A gentle inclined portion 99 having a small inclination angle is provided. The gentle inclined portion 99 is located between the lower end of the rear wall 95 of the handling chamber 28 and the upper end of the swing sorting device 36 in the vertical direction.

  The gentle inclined portion 99 has an inclined portion 99a that is inclined with respect to the horizontal plane at an inclination angle smaller than that of the steeply inclined portion 98, and a horizontal portion that is connected to the guiding terminal end side with respect to the inclined portion 99a and has an inclination angle with respect to the horizontal plane of substantially zero. And a horizontal portion 99b of the posture. The horizontal portion 99b is attached to the inclined portion 99a by bolt connection. Therefore, when unnecessary, the horizontal portion 99b can be removed and replaced with a wider horizontal portion.

  The flow guide 94 is fixed to the left side wall 24 of the threshing device 4 by bolt connection at the upper end. This bolt connection location is located on the side opposite to the side where the exhaust brace contacts. The midway position of the flow guide body 94 is fixed to the rear wall 95 of the handling chamber 28 with a bolt via the bracket 100. And the lower end part of the flow-down guide body 94 is being fixed to the rear wall 90C of the exhaust wall cover 90 with the volt | bolt via the bracket 101 (refer FIG. 7).

  As described above, the receiving net 23 does not exist at the location corresponding to the flow guide body 94, but the rear end portion of the handling cylinder 22 faces. Is discharged into the discharge wall cover 90 while being dissipated by the tooth-handling 34. At that time, the discharged straw is guided by the flow guide body 94 so as to approach the right side of the machine body and is discharged outward from below. Between the lower end of the rear wall 95 of the handling chamber 28 and the upper end of the swing sorting device 36, the sorting air from the tang 39 is supplied, so that in addition to the release guide action accompanying the rotation of the handling cylinder 22, The waste straw is guided further to the right side by the sorting wind.

[Another embodiment]
(1) In the above-described embodiment, the outer side wall 90A of the exhaust wall cover 90 is provided in a front-back orientation along the front-rear direction of the body. However, the outer side wall 90A is positioned closer to the left-right center position side of the body as the rear side of the body. It may be provided in an inclined posture.

(2) In the said embodiment, although it was set as the structure by which the fuel tank 91 was provided between the threshing apparatus 4 and the grain tank 5, you may arrange | position the fuel tank 91 in another location.

(3) In the above-described embodiment, the outlet wall cover 90 is provided with the flow down guide body 94, and the flow down guide body 94 includes the steeply inclined portion 98 and the gently inclined portion 99. However, instead of this configuration, a configuration without the horizontal portion 99b may be used, or a configuration in which the inclination angle is provided constant over the entire range may be adopted. The installation position of the flow guide 94 may be changed as appropriate.

(4) In the above embodiment, the threshing device mounted on a combine harvester mounted on a combine that targets rice, wheat, etc. has been shown. However, the threshing mounted on a combine that targets other types of crops such as corn. You may apply to an apparatus.

  INDUSTRIAL APPLICABILITY The present invention can be applied to a combine provided with a traveling machine body including a pair of left and right traveling devices and a threshing device for threshing a harvested crop.

DESCRIPTION OF SYMBOLS 2 Traveling device 4 Threshing device 5 Grain tank 22 Handling drum 23 Receiving net 28 Handling chamber 36 Swing sorter 90 Waste wall cover 90A Outer side wall 90B Inner side wall 91 Fuel tank 94 Flowing guide body 95 Rear wall 98 Steeply inclined part 99 Slow inclination Part 99b horizontal part

Claims (10)

A traveling machine body including a pair of left and right traveling devices and a threshing device for threshing a harvested crop are provided.
The threshing device is provided in the traveling machine body in a state of being biased to the left or right with respect to the center position in the lateral direction of the machine body,
Behind the threshing device, provided with a waste wall cover that receives the waste wall discharged from the threshing device and discharges it from the lower side to the outside,
The combine in which the inner side wall located on the inner side in the width direction of the fuselage in the exhaust wall cover is inclined so that the rear side of the fuselage is located closer to the center of the left and right sides of the fuselage.   The combine according to claim 1, wherein an outer side wall located on the outer side in the lateral direction of the fuselage in the exhaust wall cover is in a longitudinal orientation along the longitudinal direction of the fuselage. A grain tank for storing the grain obtained by the threshing device is provided in a state aligned with the threshing device and the machine body width direction,
Between the threshing device and the grain tank, a fuel tank is provided at a position adjacent to the inner side wall in the exhaust wall cover,
The combine according to claim 1 or 2, wherein the inner side wall extends below the upper surface of the fuel tank.   The combine according to claim 3, wherein a rear end of the inner side wall extends to a position close to a side surface of the fuel tank.   In the exhaust wall cover, there is provided a downflow guide body in an inclined posture extending from the outer side wall located on the outer side in the lateral direction of the fuselage toward the inner side wall and located downward toward the inner side in the lateral direction of the fuselage. Item 5. The combine according to any one of Items 1 to 4.   The combine according to claim 5, wherein the flow guide body is provided on the outer side of the fuselage cover with respect to the center position in the width direction of the fuselage.   The flow guide body includes a steeply inclined portion with a large inclination angle with respect to the horizontal plane at a guide start end side position located on the upper side, and a gentle inclined portion with a small inclination angle with respect to the horizontal plane at a guide end side location located on the lower side. The combine of Claim 5 or 6 provided.   The combine according to claim 7, wherein the flow guide body includes a horizontal portion in a horizontal posture on the gentle slope portion. The threshing device includes a handling cylinder that rotates around a front and rear axis and a receiving net provided in an arc shape along an outer peripheral portion of the handling cylinder, and a threshing below the handling room. Equipped with a rocking sorter that sorts processed materials,
The upper end position of the guide start end side portion of the flow guide body is positioned near the rotation axis between the rotation axis of the handling cylinder and the lower end of the receiving net in the vertical direction,
The lower end position of the guide terminal side portion of the flow guide body is located between the lower end of the rear wall of the handling chamber and the upper end of the swing sorting device in the vertical direction. Combine according to Item 1. The threshing device includes a handling cylinder that rotates around a front and rear axis and a receiving net provided in an arc shape along an outer peripheral portion of the handling cylinder, and a threshing below the handling room. Equipped with a rocking sorter that sorts processed materials,
The combine according to claim 7 or 8, wherein the gently inclined portion is located between a lower end of a rear wall of the handling chamber and an upper end of the swing sorting device in the vertical direction.

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