JP2020178688A - Harvester - Google Patents

Abstract

To preferably configure a thresher in a harvester.SOLUTION: A harvester includes: a thresher 4 for threshing harvests; and a side cover 30 for covering a lateral side part positioned on an outer side in a horizontal direction of the thresher 4.SELECTED DRAWING: Figure 1

Description

The present invention relates to a harvester, and more particularly to a harvester in which a threshing device is provided in a state of being biased to one side in the left-right direction.

The above-mentioned harvester is provided with the threshing device biased to one side in the left-right direction, and the lateral portion of the threshing device on the left-right outer side is in a position facing the outer side in the horizontal direction of the machine, and threshing. The lateral side of the device on the lateral side in the left-right direction is covered with a side cover. In the combine as an example of the harvester, conventionally, the side cover is composed of a plurality of divided cover bodies, and each cover body has a smooth outer surface in the left-right direction along the front-rear direction. It was provided in a shape that connects to. Each cover body is separately held in position by an elastic engagement type locking mechanism that automatically engages with a locked member provided on the threshing device main body side as it is moved toward the closed position. It had a structure (see, for example, Patent Document 1). In this configuration, the outer surface of the side cover in the left-right direction is smoothly connected along the front-rear direction, so even if the uncut crops that are being planted come into contact with the side cover during the cutting work. , There is little risk of uncut crops getting caught and damaging.

Japanese Unexamined Patent Publication No. 2017-21949

In the above-mentioned conventional configuration, the surfaces on the outer side in the left-right direction are smoothly connected along the front-rear direction, and the position is held in a state where the protrusions on the outer side do not occur. Therefore, each of the plurality of covers is complicated. It had to be provided with a locking mechanism of the configuration, which had the disadvantage of complicated support structure and high cost.

Therefore, it is desired to simplify the support structure of the side cover and reduce the cost while preventing the uncut crops from being caught and damaged at the outer side of the side cover. It was.

The characteristic configuration of the harvester according to the present invention is that a threshing device for threshing the harvested product and a grain storage device for storing the grains obtained by the threshing treatment are provided in a state of being arranged in the left-right direction. A side cover is provided to cover the lateral side portion on the lateral side in the left-right direction of the device, and the side cover is divided into an upper cover portion located on the upper side and a lower cover portion located on the lower side, and the side cover is described. At the boundary portion between the upper cover portion and the lower cover portion, a line is formed along the boundary portion in the front-rear direction on either or both of the lower end portion of the upper cover portion and the upper end portion of the lower cover portion. A linear recess is formed so as to be recessed in a shape, and a fixture for attaching and fixing the side cover to the lateral side portion is housed in the linear recess.

According to the present invention, in the side cover, a linear recess is formed in the front-rear direction at the boundary portion between the upper cover portion and the lower cover portion divided into upper and lower parts, and the fixture is provided in the linear recess. It is stored. As a result, even if an inexpensive fixture such as a knob bolt, which can be easily attached and detached but has a simple structure, is used as the fixture, the outer surface of the side cover is used. The fixture does not stick out from the surface, and there is little risk of uncut crops getting caught.

Therefore, it is possible to simplify the support structure of the side cover and reduce the cost while avoiding the uncut crops being caught and damaged at the outer side of the side cover. It was.

In the present invention, a protruding portion that protrudes outward in the left-right direction is formed in the front-rear middle portion of the bottom portion of the recessed side of the linear recess, and a recessed space is formed on the inward side in the left-right direction of the protruding portion. It is preferable that a transmission mechanism for power transmission is provided on the left-right inward side of the side cover so as to enter the recessed space.

According to this configuration, a protrusion is formed in the middle of the front and rear of the linear recess so as to protrude outward from the bottom of the recess. Then, the recessed space formed on the inward side in the left-right direction of the protruding portion is effectively utilized, and the transmission mechanism for power transmission is provided in a state of being inserted.

As a result, it is possible to make the entire body compact by moving the side cover as close to the inside of the threshing device as possible while avoiding the possibility of interference between the side cover and the transmission mechanism.

In the present invention, it is preferable that the outer surface of the upper cover portion and the outer surface of the lower cover portion have substantially the same distance from the lateral portion in the left-right direction.

According to this configuration, the outer surface of the upper cover portion and the outer surface of the lower cover portion are substantially at the same position in the left-right direction. Therefore, for example, when a tall uncut crop is slidably guided by the side cover. Even so, the culm can be guided well in a straight standing posture without bending.

In the present invention, it is preferable that the front lower end edge of the lower cover portion is formed in a curved shape in a side view.

According to this configuration, when the planted uncut crop comes into contact with the lower cover portion, the uncut crop is guided backward while sliding on the lower cover portion. At this time, since the front lower end edge of the lower cover portion is formed in a curved shape, sliding guidance can be smoothly performed without damaging the uncut crop.

In the present invention, it is preferable that a recessed portion that is recessed inward in the left-right direction is formed in the rear lower portion of the lower cover portion.

According to this configuration, even if the uncut crop is guided by the lower cover portion in a state of being tilted outward in the left-right direction, it is guided to the rear side of the lower cover portion. The uncut crop is guided inward in the left-right direction along the recess, and can be returned to the standing position.

In the present invention, it is preferable that the recessed portion is continuous from the lower end of the front end edge of the lower cover portion toward the rear side, and is provided wider toward the rear side with the upper end edge in a rearward rising posture. is there.

According to this configuration, the uncut crop can be guided by the recessed portion in the rear-raising posture so as to smoothly and gradually return to the standing posture.

In the present invention, a cutting section located at the front portion of the machine body and a feeder for transporting the grain culm cut by the cutting section to the threshing device are provided, and the front portion of the boundary portion is lowered forward in a side view. It is preferable that the upper cover portion is formed in an inclined posture and covers the lateral side of the transport end portion of the feeder in a state in which the front portion of the upper cover portion extends to the lower side portion of the transport end portion of the feeder in a side view. ..

According to this configuration, when the front portion of the upper cover portion is removed, the transport end portion of the feeder is opened, and maintenance work can be easily performed.

It is the whole left side view of the combine. It is the whole plan view of the combine. It is the whole right side view of the combine. It is a side view of a side cover. It is a vertical sectional front view of a side cover. It is a perspective view of the 1st cover body. It is a perspective view of the 1st cover body. It is a perspective view of the 3rd cover body. It is a perspective view of the 3rd cover body. It is a perspective view of the 4th cover body. It is a perspective view of the 4th cover body. It is a perspective view of the 2nd cover body. It is a perspective view of the 2nd cover body. It is a perspective view of the upper transmission part cover.

Hereinafter, a case where the embodiment according to the present invention is applied to a conventional combine as an example of a combine will be described with reference to the drawings.

〔overall structure〕
As shown in FIGS. 1, 2 and 3, the ordinary combine harvester is provided with a driving unit 3 on the front right side of a traveling machine 2 equipped with a pair of left and right crawler traveling devices 1, and threshing the cut crops. The device 4 and a grain storage unit 5 as a grain storage device for storing grains obtained by threshing treatment are provided. The grain storage unit 5 is provided in a state of being located behind the operation unit 3, the grain storage unit 5 is located on the right side of the machine body, and the threshing device 4 is located on the left side of the machine body. The threshing device 4 is placed and supported on the machine frame 6 side by side along the width direction of the machine. An engine 7 is provided below the driving unit 3. The driver unit 3 is provided with a canopy 9 that covers the upper part of the driver's seat 8.

In this embodiment, when defining the front-rear direction of the aircraft, it is defined along the traveling direction of the aircraft in the working state, and when defining the left-right direction of the aircraft, the left and right are defined as viewed in the traveling direction of the aircraft. .. That is, the direction indicated by the reference numeral (F) in FIGS. 1 and 2 is the front side of the machine body, and the direction indicated by the reference numeral (B) in FIGS. 1 and 2 is the rear side of the machine body. The direction indicated by reference numeral (L) in FIG. 2 is the left side of the aircraft, and the direction indicated by reference numeral (R) in FIG. 2 is the right side of the aircraft.

A feeder 10 that vertically swings up and down around the lateral axis X is connected to the front portion of the threshing device 4, and a cutting portion having a cutting width substantially equivalent to the width of the machine body is connected to the front end of the feeder 10. 11 are connected. The cutting unit 11 has a rotary reel 12 that scrapes the planted culm backward, a varican-shaped cutting blade 13 that cuts and cuts the root of the planted culm, and a culm cut laterally to the middle side in the width direction of the machine body. The auger 14 and the like to be fed are provided, and the grain culms cut by the cutting blade 13 are laterally fed by the auger 14 and supplied to the feeder 10.

[Transmission structure to the cutting section]
As shown in FIG. 1, the power of the engine 7 provided below the driving unit 3 is transmitted to the left end of the machine body through the counter shaft 15. Then, it is transmitted from the pulley 15a provided on the counter shaft 15 to the pulley 17a provided on the handling cylinder relay shaft 17 via the transmission belt 16 as a transmission mechanism for power transmission. It is transmitted from the handling cylinder relay shaft 17 to the pulley 19a provided on the cutting input shaft 19 located on the swing shaft core X via another transmission belt 18. Further, it is transmitted to the cutting transmission unit provided on the right side of the cutting unit 11 via the endless rotating chain 20 provided in the feeder 10 and the driven shaft 21. Although not shown, the cutting transmission unit transmits power to each of the rotary reel 12, the cutting blade 13, and the auger 14.

As shown in FIG. 3, the upper transmission part cover 23 covering the right outer side of the transmission mechanism to the rotary reel 12 and the lower transmission part cover 24 covering the transmission mechanism to the auger 14 and the cutting blade 13 among the cutting transmission parts. And are provided. The upper transmission portion cover 23 and the lower transmission portion cover 24 are each made of a synthetic resin material. The upper transmission portion cover 23 is fixed by bolting two portions on the side surface in a state where a plurality of portions of the upper edge portion are locked to locking portions (not shown). Similarly, the lower transmission portion cover 24 is also fixed by connecting the side surfaces with bolts at two places.

As shown in FIGS. 1 and 14, a recessed portion 25 that is recessed in a circular shape is formed at a bolt mounting portion of the upper transmission portion cover 23 so as to cover the outer peripheral side of the bolt Bo. Further, on the lower side of the side surface, a large recess 60 extending from the lower front portion to the rear end is formed. That is, an inclined surface 23B that gradually enters the inward side in the left-right direction is formed from the upper surface 23A that is flat in the vertical direction among the side surfaces, and a bottom surface 23C that is flat in the vertical direction is formed below the inclined surface 23B. Has been done. A large recess 60 is formed by the inclined surface 23B and the bottom surface 23C. The recessed portion 60 extends from the lower front portion of the side surface in a diagonally rearward rising state, and then extends to the rear end portion of the side surface in a substantially horizontal direction in a state of being connected to the recessed portion 60. As described above, since the recessed portion 25 is formed at the bolt mounting portion, it is possible to prevent the head of the bolt Bo from protruding laterally outward, and there is little possibility that uncut crops will be caught.

As shown in FIG. 3, a recessed groove 24a extending in the front-rear direction and narrow in the vertical direction is formed in the central portion on the side surface of the lower transmission portion cover 24. By forming the elongated recessed groove 24a in the front-rear direction in this way, the strength is reinforced.

[Threshing device]
Although not shown, the threshing device 4 has a handling cylinder and a receiving net inside, and a handling room for handling the harvested culm carried from the feeder 10 is formed. Further, at the lower part of the handling chamber, a sorting processing unit is provided for sorting the treated products leaking from the receiving net into secondary products such as grains and paddy with branches, and waste straw waste.

The grains sorted by the sorting processing section are discharged to the lateral outside on the grain storage section 5 side of the threshing device 4 by a first-class recovery screw (not shown). A grain raising device 26 composed of a screw conveyor is provided on the lateral outer side of the side wall on the grain storage portion 5 side of the threshing device 4. The grains discharged to the outside on the lateral side of the grain storage section 5 of the threshing device 4 are conveyed upward by the grain frying device 26 and stored in the grain storage section 5. The second product obtained in the sorting processing unit is reduced to the front side portion of the threshing device 4, and the waste straw waste and the like are discharged outward from the rear side of the machine body of the threshing device 4.

The grain storage unit 5 has a storage space for storing threshed grains and is provided with a storage hopper 27 capable of discharging grains below the storage space, and the lower part of the storage hopper 27 is provided with a storage hopper 27. A collection unit (not shown) for collecting grains in a collection bag is provided.

[Side cover]
On the left side of the traveling machine 2, a side cover 30 is provided to cover the left side wall portion 4A as the left side side portion of the threshing device 4.
As shown in FIGS. 1 and 4, the side cover 30 is vertically divided into an upper cover portion 31 located on the upper side and a lower cover portion 32 located on the lower side. Further, the upper cover 31 is divided into a front side upper cover body 33 (hereinafter referred to as a first cover body) and a rear side upper cover body 34 (hereinafter referred to as a second cover body). The first cover body 33 corresponds to the front portion of the upper cover portion 31, and is made of a synthetic resin material. On the other hand, the second cover body 34 corresponds to the rear portion of the upper cover portion 31, and is made of a sheet metal material.

The lower cover portion 32 is divided into front and rear parts into a front side lower cover body 35 (hereinafter referred to as a third cover body) and a rear side lower cover body 36 (hereinafter referred to as a fourth cover body). The third cover body 35 and the fourth cover body 36 are each made of a synthetic resin material.

As shown in FIG. 5, the outer surface of the upper cover portion 31 and the outer surface of the lower cover portion 32 have substantially the same separation distance in the left-right direction from the left wall portion 4A of the threshing device 4. Therefore, since the outer surface of the upper cover portion 31 and the outer surface of the lower cover portion 32 are substantially at the same position in the left-right direction, the outer surface of the side cover 30 forms a vertically oriented surface that is smoothly connected in the vertical direction. ing. As a result, uncut crops can be guided comfortably in a standing position without bending the culm.

At the boundary portion K between the upper cover portion 31 and the lower cover portion 32, the front and rear ends from the front end portion to the rear end portion are recessed linearly inward in the left-right direction along the boundary portion K. A linear recess Q is formed.

The front part of the boundary portion K between the upper cover portion 31 and the lower cover portion 32, that is, the boundary portion K between the first cover body 33 and the third cover body 35 is formed in a forward downward inclined posture in a side view. Has been done. Then, the first cover body 33 covers the lateral side of the transport end portion of the feeder 10 in a state of extending to the lower side portion of the transport end portion of the feeder 10 in a side view. The second cover body 34 covers the lateral outer side of the handling chamber of the threshing device 4.

At the boundary portion K between the upper cover portion 31 and the lower cover portion 32, a linear recess Q is formed at the upper end portion of the lower cover portion 32 so as to linearly recess along the boundary portion K in the front-rear direction. ing. A knob bolt 37 as a fixture for attaching and fixing the side cover 30 to the left wall portion 4A of the threshing device 4 is housed in the linear recess Q.

Hereinafter, the configurations of the cover bodies 33, 34, 35, and 36 will be described.

[First cover body]
As shown in FIGS. 1, 4, 6 and 7, the first cover body 33 extends in a sideways posture in a state of being connected to the lateral wall portion 33A covering the left outer side of the transport end portion of the feeder 10 and the lateral wall portion 33A. A front wall portion 33B that covers the upper front of the left side wall portion 4A of the threshing device 4 is provided. A plurality of reinforcing ribs 33C are provided inside the portion where the lateral wall portion 33A and the front wall portion 33B are connected. The lower end edge of the side wall portion 33A of the first cover body 33 is formed in a rearward tilting posture in which the front end portion is located at the lowest position and the lower end portion is located at the upper end toward the rear side.

The first cover body 33 is provided with locking portions 33D at both front and rear portions on the lower inner side, and the locking portions 33D on both front and rear sides enter and engage with the fixed side locking tool 39 supported by the threshing frame 38 from above. Is supported. Further, the upper rear portion of the first cover body 33 is fixed to the fixing side bracket 41 supported by the threshing frame 38 by the knob bolt 40. The knob bolt 40 can be easily removed by removing the engagement between the locking portion 33D and the fixing tool 39. Moreover, it can be easily attached by the reverse procedure. At the location where the knob bolt 40 of the first cover body 33 is attached, a recessed portion 42 that is recessed toward the inside of the machine body is formed so that the knob bolt 40 does not protrude significantly outward on the lateral side.

[Second cover body]
As shown in FIGS. 1, 4, 12, and 13, the outer surface of the second cover body 34 is formed as a flat surface extending straight from the upper end to the lower end when viewed from the front. The second cover body 34 is supported by the threshing frame 38 so as to be swingable and openable around the front-rear axial core on the upper side in order to perform maintenance work such as inspection and cleaning of the inside of the handling room. The second cover body 34 is provided with an elastic engagement type locking mechanism 43 having a well-known structure that automatically engages with a locked member provided on the threshing device main body side as it is moved toward the closed position. ing.

The lock mechanism 43 does not protrude outward from the outer surface of the second cover body 34, and can be unlocked manually from the outer side. When the lock is released, the second cover body 34 can be swung open as it is.

[Third cover body]
As shown in FIGS. 1 and 4, the third cover body 35 covers the front side portion of the sorting processing unit and a part of the space on the front side side of the threshing device 4 on the lateral outer side. The third cover body 35 is provided so as to extend along the lower side of the first cover body 33 and the lower side of the front side of the second cover body 34. As shown in FIGS. 6 and 7, the third cover body 35 is in a sideways posture in a state of being connected to the lateral wall portion 61 that covers the left outer side of the lower front side of the left wall portion 4A of the threshing device 4. It is provided with a front wall portion 62 that extends below and covers the lower front of the left wall portion 4A of the threshing device 4. A plurality of reinforcements 70 are provided inside the portion where the side wall portion 61 and the front wall portion 62 are connected.

The upper end edge of the side wall portion 61 of the third cover body 35 is formed in a rearward tilting posture in which the front end portion is located at the lowest position and is located upward toward the rear side. Then, at the upper end portion of the lateral wall portion 61 corresponding to the boundary portion K between the upper cover portion 31 and the lower cover portion 32, from the front end portion to the rear end portion, along the boundary portion K, inward in the left-right direction. A linear recess Q1 on the front side is formed so as to be linearly recessed toward the front.

As shown in FIG. 9, the third cover body 35 is provided with a locking portion 35D at the rear side portion of the inner lower portion, and the locking portion 71 is provided on the fixed side locking tool 44 provided on the threshing device 4 side on the upper side. It is supported by entering from and engaging. Further, two places separated from each other in the front and rear of the upper part of the third cover body 35 are fixed to the fixed side bracket 45 provided on the threshing device 4 side by the knob bolt 37. It can be easily removed by removing the knob bolt 37 and disengaging the locking portion 71 from the fixing side locking tool 44. Moreover, it can be easily attached by the reverse procedure.

The place where the knob bolt 37 of the third cover body 35 is attached is a place where a linear recess Q1 that is recessed toward the inside of the machine body is formed. Further, at the location where the knob bolt 37 is mounted, a recessed portion 46 having a circular recess from the bottom surface portion of the linear recess Q1 toward the inward side in a staircase pattern is formed. In this way, the knob bolt 37 is prevented from protruding laterally outward from the outer surface of the third cover body 35.

As shown in FIG. 8, a protruding portion 47 projecting outward in the left-right direction is formed in the front-rear and intermediate portion of the bottom portion of the linear recess Q1 formed in the third cover body 35 on the recessed side. A recessed space 48 is formed on the inner side of the protruding portion 47 in the left-right direction. A transmission belt 16 for transmitting power from the counter shaft 15 to the cutting input shaft 19 while entering the recessed space 48 is provided on the left-right inward side of the third cover body 35.

With this configuration, it is possible to avoid interference with the transmission belt 16 while deploying the third cover body 35 in a state as close as possible to the threshing device 4.

The front lower end edge 35E of the third cover body 35 is formed in a curved shape in a side view. This place is the place where the uncut crops that are being planted first come into contact with the side cover 30, and the front lower end edge 35E is formed in a curved shape so that it can be guided smoothly without being caught. it can.

[4th cover body]
As shown in FIGS. 1 and 4, the fourth cover body 36 covers the lateral outer side of the rear side portion of the sorting processing unit. The fourth cover body 36 is provided so as to extend along the rear side of the third cover body 35 and the lower side of the rear side of the second cover body 34. As shown in FIGS. 10 and 11, the fourth cover body 36 is laterally connected to the lateral wall portion 63 that covers the left outer side of the lower rear portion of the left wall portion 4A of the threshing device 4, and the lateral wall portion 63. It is provided with a rear wall portion 64 that extends in a posture and covers the lower rear portion of the left side wall portion 4A of the threshing device 4. A plurality of reinforcing ribs 72 are provided inside the portion where the lateral wall portion 63 and the rear wall portion 64 are connected.

The upper end edge of the side wall portion 63 of the fourth cover body 36 extends in a substantially straight line in the front-rear direction, and is formed in a gently rising backward inclined posture which is gradually positioned upward toward the rear side. Then, at the upper end portion of the lateral wall portion 63 corresponding to the boundary portion K between the upper cover portion 31 and the lower cover portion 32, from the front end portion to the rear end portion, inward in the left-right direction along the boundary portion K. A linear recess Q2 on the rear side is formed so as to be linearly recessed toward the rear. The linear recess Q1 on the front side and the linear recess Q2 on the rear side form a linear recess Q extending in the front-rear direction.

As shown in FIG. 11, the fourth cover body 36 is provided with locking portions 73 on both front and rear sides of the inner lower portion, and the locking portions 73 are attached to the fixing side locking tool 49 provided on the threshing device 4 side from above. It is supported by entering and engaging. Further, two positions separated from each other in the front and rear of the upper part of the fourth cover body 36 are fixed to the fixing side bracket 50 provided on the threshing frame 38 by the knob bolt 37. The knob bolt 37 can be easily removed by removing the engagement between the locking portion 73 and the fixing tool 49. Moreover, it can be easily attached by the reverse procedure.

The place where the knob bolt 37 of the fourth cover body 36 is attached is a place where a linear recess Q2 that is recessed toward the inside of the machine body is formed. Further, a circular recess 51 is formed at a position where the knob bolt 37 is mounted, which is recessed inward in the left-right direction in a stepped manner from the bottom surface of the linear recess Q1. In this way, the knob bolt 37 is prevented from protruding laterally outward from the outer surface of the third cover body 35.

As shown in FIGS. 1, 4, 8 and 10, the third cover body 35 and the fourth cover body 36 are recessed inward in the left-right direction in a state of being continuously connected in the front-rear direction. The entrance 52 is formed. The recessed portion 52 includes a first recessed portion 52A formed on the lower rear portion of the third cover body 35, and a second recessed portion 52B formed on the lower side of the fourth cover body 36 in a state of being connected to the first recessed portion 52A. ..

To add an explanation, the third cover body 35 has an inclination that gradually enters the inward side in the left-right direction diagonally from the vertically flat upper surface 35A of the side wall portion 61, similarly to the upper transmission portion cover 23. A surface 35B is formed, and a bottom surface 35C flat in the vertical direction is formed below the inclined surface 35B. The first recessed portion 52A is formed by the inclined surface 35B and the bottom surface 35C.

Further, the fourth cover body 36 is formed with an inclined surface 36B of the side wall portion 63 which is flat in the vertical direction and gradually enters the inward side in the left-right direction in the diagonal direction, and is below the inclined surface 36B. A flat bottom surface 36C is formed in the vertical direction. The second recessed portion 52B is formed by the inclined surface 36B and the bottom surface 36C.

The recessed portion 52 is continuous from the lower end portion of the front end edge of the third cover body 35 toward the rear end portion of the fourth cover body 36, and is provided wider toward the rear side in a state where the upper end edge is in the rearward rising posture. .. The recessed portion 52 is formed in a backward tilted posture, and can smoothly guide the uncut crops planted so as to return to the standing posture without difficulty.

[Another Embodiment]
(1) In the above embodiment, the linear recess Q is formed at the upper end of the lower cover portion 32, but instead of such a configuration, the linear recess Q is formed at the lower end of the upper cover portion 31. The configuration may be formed, or the linear recess Q may be formed at the upper end portion of the lower cover portion 32 and the lower end portion of the upper cover portion 31, respectively.

(2) In the above embodiment, in the side cover 30, a protrusion 47 is formed in the front-rear and intermediate portion of the linear recess Q, and the transmission belt 16 is provided in the recessed space 48 formed inward of the protrusion 47. However, instead of this configuration, a transmission chain and a transmission shaft may be provided instead of the transmission belt 16 as the transmission mechanism, and the transmission may be performed without forming such a recessed space 48. It may be arranged in a state where the mechanism is avoided.

(3) In the above embodiment, the outer surface of the upper cover portion 31 and the outer surface of the lower cover portion 32 have substantially the same separation distance in the left-right direction from the left wall portion 4A of the threshing device 4. However, instead of this configuration, the distance between the outer surface of the upper cover portion 31 and the outer surface of the lower cover portion 32 in the left-right direction from the left side wall portion 4A may be different from each other.

(4) In the above embodiment, the lower cover portion 32 is formed with a recessed portion 52, and the recessed portion 52 is connected from the lower end portion of the front end edge of the lower cover portion 32 toward the rear side, and the upper end edge is in a rear-raised posture. In this state, the rear side is provided wider, but instead of this configuration, the recessed portion 52 may be formed at substantially the same height in the front-rear direction, and such a recessed portion 52 is formed. It may be configured not to.

(5) In the above embodiment, the front portion of the boundary portion K is formed in a forward-down inclined posture in a side view, but instead of such a configuration, the boundary portion K extends over the entire area in the front-rear direction. It may be configured to extend in a straight line.

(6) In the above embodiment, the front lower end edge of the lower cover portion 32, that is, the front lower end edge 35E of the third cover body 35 is formed in a curved shape in a side view. Alternatively, the front lower end edge of the lower cover portion 32 may extend linearly.

The present invention can be applied to various harvesters such as corn harvesters as well as combines such as ordinary combine harvesters and head-feeding combine harvesters.

4 Threshing device 5 Grain storage device 10 Feeder 11 Cutting part 17 Transmission belt (transmission mechanism)
30 Side cover 31 Upper cover 32 Lower cover 47 Protruding 48 Recessed space 52 Recessed K Boundary Q, Q1, Q2 Linear recess

Claims (1)

A harvester provided with a threshing device for threshing the harvested product and a side cover for covering the lateral side portion of the threshing device on the lateral side in the left-right direction.

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