JP7413235B2 - combine - Google Patents

Description

The present invention relates to a combine harvester.

For example, in the threshing device disclosed in Patent Document 1, a handling drum is housed in a handling chamber, and the front end of the supporting shaft of the handling drum (referred to as a "handling trunk shaft" in the literature) touches a wall (referred to as a "front wall" in the literature). Penetrating. A drive wheel body ("input pulley" in the literature) around which an endless rotating body ("transmission belt" in the literature) is wound is provided on the part of the support shaft that protrudes outside the device beyond the wall. The cover part is attached to the wall part so as to cover the.

Japanese Patent Application Publication No. 2019-110770

The cover portion disclosed in Patent Document 1 covers the entire drive wheel body, reducing the risk of foreign matter entering the internal space of the cover portion. However, it is conceivable that the intrusion of dust etc. from the gap between the wall part and the cover part cannot be completely prevented, and the intruded dust etc. gradually accumulates on the bottom part of the cover part. When the drive wheel body rotates, some air flow is generated in the space around the drive wheel body along the direction of rotation of the drive wheel body, so dust, etc., floats and flows to the upper side in the direction of rotation of the drive wheel body. Flows toward the lower side in the direction of rotation. Since the air flow is attenuated as the distance from the drive wheel body increases, floating dust and the like tend to accumulate on a portion of the bottom of the cover section that is remote from the drive wheel body. Then, if the accumulation of dust and the like gradually progresses from the parts away from the drive wheel body, and the dust etc. accumulates in the space near the bottom of the drive wheel body, for example, between the drive wheel body and the endless rotating body. There is a possibility that the rotational drive of the drive wheel body may be hindered due to factors such as foreign matter being entangled.

An object of the present invention is to provide a combine harvester in which dust and the like are difficult to accumulate around a drive wheel body around which an endless rotating body is wound.

The combine harvester of the present invention has a reaping section that reaps crops in a field and transports them toward the rear of the machine body, a rotationally driven handling cylinder, and a handling chamber that accommodates the handling cylinder, and the combine harvester has a reaping section that reaps crops in a field and conveys them toward the rear of the machine body, a handling drum that is rotatably driven, and a handling chamber that accommodates the handling cylinder, and A threshing device is provided in which a crop is input and the input crop is threshed by the handling drum, and an end of one of the front and rear sides of the support shaft of the handling drum is connected to one of the front and rear sides of the threshing device. A drive wheel body around which an endless rotating body for transmitting power from a drive source is provided, which penetrates the wall part and protrudes beyond the wall part of the support shaft to the outside of the device. a cover part that is attached to the wall part and covers the drive wheel body, the cover part is provided with a bottom part that covers the drive wheel body from below, and of the area covered by the cover part, a space located on the upper side in the direction in which the lower part rotates with respect to the space between the lower part of the drive wheel body and the bottom part, and a space opposite to the space and located on the upper side; A wall member is provided to partition the space into left and right sides, and a lower end portion of the wall member extends to the vicinity of the bottom portion .

According to the present invention, the wall member is provided so as to face the space on the upper side in the rotational direction at the lower part of the drive wheel body in the space between the lower part and the bottom of the drive wheel body. When the drive wheel body rotates, some air flow is generated in the space around the drive wheel body along the rotational direction of the drive wheel body. Therefore, when the foreign matter is flown from the upper side in the rotational direction of the drive wheel body to the lower side in the rotational direction, the foreign substance is guided to the space on the side opposite to the side where the drive wheel body is located with respect to the wall member. Thereafter, the foreign object and the drive wheel body are separated by the wall member, and the possibility that the foreign object enters the space between the lower part and the bottom of the drive wheel body is reduced. This reduces the risk of foreign matter accumulating in the space near the lower part of the drive wheel body, and provides a combine harvester in which foreign matter is unlikely to accumulate around the drive wheel body around which the endless rotating body is wound.

In the present invention, it is preferable that the upper part of the wall member is bent so as to follow the outer peripheral shape of the upper part of the drive wheel body.

With this configuration, the upper part of the wall member follows the outer peripheral shape of the upper part of the drive wheel body, thereby making it possible to arrange the wall member as close to the drive wheel body as possible. This narrows the space between the wall member and the drive wheel body, making it easier for foreign matter to be guided into the space on the opposite side of the wall member to the side where the drive wheel body is located.

In the present invention, it is preferable that the upper end of the wall member extends to a position above the top point of the drive wheel body in the direction in which the upper part of the drive wheel body rotates.

According to this configuration, the wall member is configured to cover as much of the upper part of the drive wheel body as possible. This reduces the risk of foreign matter landing on the drive wheel body, and further reduces the risk of foreign matter entering the space between the lower part and the bottom of the drive wheel body.

In the present invention, it is preferable that the upper end of the wall member is stopped at a position below the top point of the drive wheel body in the direction in which the upper part of the drive wheel body rotates.

With this configuration, the configuration of the wall member becomes compact and simple.

In the present invention, the wall member is provided to face a winding region of the drive wheel body around which the endless rotating body is wound, and the upper end portion of the wall member is located above the drive wheel body. It is preferable that the winding region extends to a position on the upper side of the upper end of the winding region in the direction in which the winding region rotates.

With this configuration, since the upper end of the winding region is covered by the wall member, the risk of foreign matter being caught between the drive wheel body and the endless rotating body is reduced.

In the present invention, the wall member is provided to face a winding region of the drive wheel body around which the endless rotating body is wound, and the upper end portion of the wall member is located above the drive wheel body. It is preferable that the winding region is stopped at a position on the lower side than the upper end of the winding region in the direction in which the winding region rotates.

With this configuration, the configuration of the wall member becomes compact and simple.

In the present invention, it is preferable that a lower end of the wall member abuts the bottom, and that the wall member extends upward from the lower end .

With this configuration, the wall member is raised from the bottom. For this reason, even if foreign matter accumulates on the bottom part of the wall member on the side opposite to where the drive wheel body is located, compared to a configuration in which there is a gap between the wall member and the bottom part, This reduces the risk of foreign matter entering the space between the lower part and the bottom of the drive wheel body.

The present invention includes a reaping section that reaps crops in a field and transports them toward the rear of the machine body, a rotationally driven handling cylinder, and a handling chamber that accommodates the handling cylinder, and the crops harvested by the reaping section are a threshing device that threshes the inputted crops with the handling drum, and an end of the support shaft of the handling drum on one front and rear side is connected to a wall on one front and rear side of the threshing device. A driving wheel body is provided at a portion of the support shaft that extends beyond the wall portion and protrudes outside the device from the wall portion, and is wound with an endless rotating body that transmits power from a drive source; A cover part is attached to the wall part and covers the drive wheel body, the cover part is provided with a bottom part that covers the drive wheel body from below, and the drive wheel body is provided with a bottom part that covers the drive wheel body from below. A wall member is provided at a location located on the upper side in the direction in which the lower part rotates with respect to the space between the lower part of the ring body and the bottom part, and faces the space, and of the bottom part , An opening is formed in a portion of the wall member opposite to the side where the drive wheel body is located to allow foreign matter that has entered the space between the wall portion and the cover portion to fall. suitable.

With this configuration, foreign matter does not accumulate on the bottom portion of the wall member on the side opposite to the side where the drive wheel body is located. This prevents foreign matter accumulated on the bottom portion of the wall member on the side opposite to where the drive wheel body is located from climbing over the wall member and falling to the side where the drive wheel body is located. .

In the present invention, it is preferable that the opening is provided with a regulating member that regulates entry of foreign matter from the opening into the space, and that the opening is partitioned into a plurality of openings by the regulating member. .

With this configuration, since the regulating member is provided in the opening, it becomes more difficult for foreign matter to accumulate in the internal space of the cover part. Moreover, according to this configuration, since the regulating member partitions the opening into a plurality of openings, a configuration in which each opening in the opening can be made smaller is possible. This makes it difficult for foreign matter to enter the internal space of the cover part from the opening.

FIG. 2 is an overall side view of the combine harvester. It is a front view showing a rotating body, a cover part, and a wall member provided on the front wall part of the threshing device. It is a front view which shows the rotating body and wall member with which the front wall part of a threshing device was equipped. FIG. 3 is a sectional view taken along the line IV-IV in FIG. 2 showing a rotating body, a cover, a wall member, and an opening provided on the front wall of the threshing device. FIG. 3 is a sectional view taken along the line VV in FIG. 2 showing a rotating body and a wall member. It is a bottom view showing a rotating body, a cover part, a wall member, and an opening provided in the front wall part of the threshing device. It is a front view which shows the rotating body, the cover part, and the wall member with which the front wall part of the threshing device was equipped as another embodiment. It is a front view which shows the rotating body, the cover part, and the wall member with which the front wall part of the threshing device was equipped as another embodiment. It is a front view which shows the rotating body, the cover part, and the wall member with which the front wall part of the threshing device was equipped as another embodiment.

Hereinafter, an embodiment that is an example of the present invention will be described based on a combine harvester. In the following description, regarding the traveling machine body 1 of the combine harvester, the direction of the arrow "F" shown in FIG. In addition, the direction toward the front of the paper in FIG. 1 is referred to as "the left side of the aircraft," and the direction toward the back of the paper is referred to as the "right side of the aircraft." The direction of the arrow "L" shown in FIG. 2 is defined as "the left side of the aircraft," and the direction of the arrow "R" shown in FIG. 2 is defined as the "right side of the aircraft."

[About the entire combine harvester]
As shown in FIG. 1, a traveling body 1 of a combine harvester includes a body frame 2, and the body frame 2 is constructed by connecting a plurality of steel materials such as square pipe materials. A pair of left and right crawler-type traveling devices 3 are installed at the bottom of the fuselage frame 2. A driving section 5 is provided on the right side of the front part of the traveling body 1. The boarding space of the driving section 5 is covered by a cabin. An engine E is arranged below the driving section 5. Engine E is the "drive source" of the present invention. A reaping section 4 is provided at the front of the traveling body 1 so as to be movable up and down. The reaping unit 4 harvests planted grain culms (field crops) of rice and wheat in a plurality of planting rows in front of the traveling machine body 1 while raising them, and conveys the harvested grain culms toward the rear of the machine body. . A threshing device 6 and a grain storage tank 8 are supported in a side-by-side manner at the rear of the body frame 2. The threshing device 6 is arranged at the rear of the reaping section 4, and the grain storage tank 8 is arranged at the rear of the driving section 5. The threshing device 6 includes a rotationally driven handling cylinder 12 and a handling chamber 13 that accommodates the handling cylinder 12. A feed chain 7 is provided on the left side of the threshing device 6, and the feed chain 7 pinches and conveys the harvested grain culm cut by the reaping section 4 to the rear. The harvested grain culms harvested by the harvesting section 4 are fed into the threshing device 6 by the feed chain 7. In the threshing device 6, the input harvested grain culm is threshed by the handling cylinder 12, and a sorting process is performed to separate the grains obtained by the threshing process from dust. The grain storage tank 8 stores the grains conveyed from the threshing device 6. A grain discharge device 9 for taking out grains from the grain storage tank 8 is connected to the rear part of the grain storage tank 8 .

[About the cover that covers the belt]
As shown in FIG. 2, a handling opening is formed on the left side of the threshing device 6, through which the harvested grain culm passes. An entrance portion 42 to the handling chamber 13 (see FIGS. 4 to 6) is formed in a space below a portion of the front wall portion 41 (see FIGS. 3 and 5) of the threshing device 6 that is covered by the cover body 45. ing. The planted grain culms in the field are harvested by the reaping section 4, and are nipped and conveyed rearward as the harvested grain culms by the feed chain 7. The harvested grain culm is then introduced into the handling chamber 13 from the entrance section 42. The feed chain 7 transports the harvested grain culm from the reaping section 4 with the tip of the harvested grain culm placed in the handling chamber 13.

As shown in FIGS. 2 to 6, the support shaft of the handling drum 12 passes through the front wall portion 41 of the threshing device 6, and the front end of the support shaft of the handling drum 12 extends beyond the front wall portion 41 of the threshing device 6. Also protrudes to the front. A rotating body 43 that inputs power to the handling cylinder 12 is provided at the front end of the support shaft of the handling cylinder 12 . The rotating body 43 is a pulley, and is the "drive wheel body" of the present invention. A belt 44 is wound around the rotating body 43. The belt 44 is the "endless rotating body" of the present invention, and transmits power from the engine E. In FIG. 3, a region of the rotating body 43 around which the belt 44 is wound is shown as a winding region 43R. As shown in FIGS. 2 and 3, the rotating body 43 and the handling cylinder 12 rotate clockwise (in the direction indicated by the arrow R1) in the plane of FIG. 3 about the rotation axis Y1.

As shown in FIG. 3, the belt 44 rotates clockwise in the drawing of FIG. 3, and the belt 44 and the rotating body 43 begin to abut at the starting end 43s (upper end). Further, the belt 44 and the rotating body 43 are separated from each other at the terminal end 43f (lower side end). In the circumferential direction of the rotating body 43, the winding region 43R extends between the starting end 43s and the ending end 43f. A portion of the belt 44 on the upper side in the rotational direction than the starting end 43s and a portion of the belt 44 on the lower side in the rotational direction than the terminal end 43f each extend along the tangential direction of the rotating body 43. Although details will be described later, a wall member 62 is provided on the left side of the rotating body 43. The wall member 62 is provided facing the winding region 43R.

In conjunction with the rotation of the rotating body 43, the handling cylinder 12 is rotated to thresh the harvested grain culm. The harvested grain culm, which is held and conveyed rearward by the feed chain 7, is threshed in the handling chamber 13 by being hit and combed by the rotation of the handling cylinder 12. A cover body 45 is attached to the front wall portion 41 of the threshing device 6 so as to cover the rotating body 43 and the belt 44. Further, an elastically deformable sheet member 49 that covers the entrance portion 42 is provided. The sheet member 49 is, for example, a flexible rubber member, and is bolted to the lower part of the cover body 45. The sheet member 49 hangs down from the lower part of the cover body 45 and covers the entrance portion 42 from the front. The sheet member 49 is fixed to the cover body 45 by a pressing member 47. The left side of the cover body 45 is covered by a horizontal cover body 6a, and the horizontal cover body 6a is provided above the feed chain 7.

A pair of left and right stays 51, 51 (see FIGS. 4 and 5) for supporting the upper part of the cover body 45 protrudes from the front wall portion 41 toward the front of the fuselage, and a support frame extends over the pair of left and right stays 51, 51. 52 is installed horizontally. In FIG. 2, a pair of left and right stays 51, 51 are present on the back side of the paper with respect to a pair of left and right stays 45S, 45S. Further, as shown in FIGS. 2 and 4, an engaging portion 53 that engages with the buckle 45B of the cover body 45 is provided so as to protrude from the right end portion of the front wall portion 41 toward the front side of the body.

The cover body 45 is provided with a pair of cover hooks 45H, 45H for engaging with the support frame 52. A pair of flat plate-shaped stays 45S, 45S are welded and fixed to the left and right portions of the upper end of the cover body 45, respectively. Further, cover hooks 45H, 45H are welded and fixed to the pair of stays 45S, 45S, respectively.

A pair of engagement holes are bored at both left and right ends of the support frame 52, and the pair of engagement holes and the pair of cover hooks 45H, 45H face each other. The pair of cover hooks 45H, 45H are hooked into the pair of engagement holes, so that the pair of cover hooks 45H, 45H are engaged with the support frame 52.

When the operator releases the engagement between the buckle 45B and the engaging portion 53, swings the cover body 45 toward the front of the machine, and then slides the cover body 45 upward, the cover hook 45H is supported. It comes off from the frame 52. This allows the operator to remove the cover body 45 from the machine body. Further, the operator slides the cover body 45 downward with respect to the support frame 52 and hooks the cover hooks 45H, 45H into the pair of engagement holes in the support frame 52. After that, the operator swings the cover body 45 toward the rear of the machine body to engage the buckle 45B and the engaging portion 53. Thereby, the operator can attach the cover body 45 to the machine body.

The front wall portion of the cover body 45 is formed into a planar shape extending vertically, and this portion is referred to as a vertical surface portion 45a of the cover body 45. A left inclined surface portion 45c and a right inclined surface portion 45d are formed at the lower part of the cover body 45. Each of the left inclined surface portion 45c and the right inclined surface portion 45d is inclined such that the lower side thereof is positioned toward the rear side of the fuselage body in a side view of the fuselage body. The left inclined surface portion 45c is formed in a shape that slants upward to the left so that the left side of the body (the right side of the paper in FIG. 2) is located at the upper side when viewed in the longitudinal direction of the body. The right inclined surface portion 45d is formed in a shape that rises to the right so that the right side of the body (the left side of the paper in FIG. 2) is located at the upper side when viewed in the longitudinal direction of the body. The upper end of the left inclined surface portion 45c is located above the upper end of the right inclined surface portion 45d. In this way, the cover body 45 is formed in a downwardly tapered shape so that the width becomes narrower toward the bottom in the lateral direction of the fuselage.

The pressing member 47 is formed in a V-shape along the inclined shapes of the left inclined surface portion 45c and the right inclined surface portion 45d when viewed in the front-rear direction. A welding bolt 47B is attached to the holding member 47. Further, a plurality of insertion holes are formed in the lower edge portion of the vertical surface portion 45a, and the plurality of insertion holes in the lower edge portion of the vertical surface portion 45a are formed in positions corresponding to the welding bolts 47B. The upper end of the sheet member 49 is pressed and fixed to the lower part of the cover body 45 by a pressing member 47. The sheet member 49 and the pressing member 47 are fixed together to the lower part of the cover body 45 by welding bolts 47B and nuts. The sheet member 49 is held between the pressing member 47 and the lower part of the vertical surface portion 45a.

When the harvested grain culm is conveyed rearward by the feed chain 7 and thrown into the handling chamber 13 from the entrance section 42, the sheet member 49 comes into contact with the harvested grain culm, and the lower part of the sheet member 49 is elastically deformed toward the rear. . As shown in FIGS. 4 and 5, each of the left inclined surface portion 45c and the right inclined surface portion 45d is inclined such that the lower side thereof is located toward the rear of the body. That is, even if the lower part of the seat member 49 is elastically deformed toward the rear, a space is provided in front of the left inclined surface portion 45c and the right inclined surface portion 45d to allow the elastic deformation of the seat member 49. Therefore, it becomes difficult for the left inclined surface portion 45c and the right inclined surface portion 45d to come into contact with the sheet member 49, and wear of the sheet member 49 due to contact between the left inclined surface portion 45c and the right inclined surface portion 45d and the sheet member 49 is suppressed. Ru.

A plate-shaped bottom portion 48 is provided over the left inclined surface portion 45c, the right inclined surface portion 45d, and the front wall portion 41. The bottom portion 48 covers the rotating body 43 from below. The bottom portion 48 is formed in a V-shape along the inclined shapes of the left inclined surface portion 45c and the right inclined surface portion 45d when viewed in the front-back direction. The bottom portion 48 is formed with a left side portion 48a and a right side portion 48b. The left side portion 48a is formed in a shape that slants upward to the left so that the left side of the body (the right side of the paper in FIG. 2) is located at the upper side when viewed in the longitudinal direction of the body. The right side portion 48b is formed in a shape that rises to the right so that the right side of the body (the left side of the paper in FIG. 2) is positioned higher when viewed in the longitudinal direction of the body. The upper end portion of the left side portion 48a is located above the upper end portion of the right side portion 48b. The cover body 45 and the bottom part 48 are the "cover parts" of the present invention, and are attached to the front wall part 41 to cover the rotating body 43.

[About wall components]
As shown in FIGS. 2 to 6, a wall member 62 is provided on the left side of the rotating body 43. The wall member 62 is located on the upper side in the direction in which the lower part of the rotor 43 rotates with respect to the space S1 between the lower part of the rotor 43 and the bottom 48 in the area covered by the cover body 45 and the bottom 48. , and is provided facing the space S1. A space S2 is provided between the rotating body 43 and the wall member 62, and the space S2 communicates with the space S1.

The wall member 62 is a flat plate member formed by bending by press working or the like. The wall member 62 is formed with a vertical plate portion 62a and an inclined plate portion 62b. The vertical plate portion 62a is formed at the lower part of the wall member 62. The inclined plate part 62b is formed on the upper part of the wall member 62, and is inclined so that the upper side approaches the side where the rotating body 43 is located in plan view. That is, the wall member 62 is bent so as to follow the outer peripheral shape of the upper part of the rotating body 43. In this embodiment, the upper end portion of the wall member 62 is stopped at a position below the top point 43t of the rotor 43 in the direction in which the upper portion of the rotor 43 rotates. Further, the upper end portion of the wall member 62 is stopped at a position on the lower side than the starting end portion 43s (upper end portion) of the winding region 43R in the direction in which the upper portion of the rotating body 43 rotates.

As shown in FIG. 5, a recessed portion 62c is formed in a portion of the inclined plate portion 62b located on the front side of the body. In other words, the front edge of the inclined plate portion 62b in the longitudinal direction of the fuselage is located on the rear side of the fuselage than the front edge of the vertical plate portion 62a in the longitudinal direction of the fuselage. With this configuration, interference between the inclined plate portion 62b and the engaging portion 53 is avoided.

As shown in FIG. 3, the wall member 62 is bolted to the front wall 41 of the threshing device 6. The wall member 62 is formed with a first support plate portion 62e and a second support plate portion 62f. The first support plate portion 62e is bent in an L-shape from the rear end edge of the vertical plate portion 62a, and extends along the surface portion of the front wall portion 41. Further, the second support plate portion 62f is bent in an L-shape from the rear end edge of the inclined plate portion 62b, and extends along the surface portion of the front wall portion 41. Bolt insertion holes are formed in each of the first support plate portion 62e and the second support plate portion 62f. Further, the front wall portion 41 is provided with two fastening holes for fastening bolts.

As shown in FIGS. 2 and 5, a stay 63 is supported by the front wall portion 41. As shown in FIGS. The stay 63 is a flat plate member bent into an L-shape, and a rear portion of the stay 63 is welded and fixed to the front wall portion 41. The extending portion of the stay 63 extends forward of the front wall portion 41. Two insertion holes for bolt insertion are bored in the lower part of the vertical plate portion 62a. Moreover, two fastening holes for bolt fastening are bored in the extending portion of the stay 63.

The operator overlays the respective fastening holes in the front wall part 41 with the respective insertion holes of the first support plate part 62e and the second support plate part 62f, and inserts bolts into the fastening holes of the front wall part 41. conclude. Further, the operator fastens bolts to the fastening holes of the stay 63 by overlapping each fastening hole in the stay 63 and each insertion hole in the lower part of the vertical plate portion 62a. Thereby, the wall member 62 is supported by the front wall portion 41 and the stay 63. Since the vertical plate portion 62a is supported by the stay 63, the rigidity of the wall member 62 is increased compared to a structure in which the wall member 62 is cantilever-supported only on the surface portion of the front wall portion 41. Further, since the vertical plate portion 62a and the inclined plate portion 62b are formed by bending, the rigidity of the wall member 62 is increased compared to a configuration in which the wall member 62 is a flat plate.

As shown in FIG. 5, the width of the vertical plate part 62a is larger than the width of the bottom part 48 in the longitudinal direction of the aircraft, and the front edge of the vertical plate part 62a extends to the front upper part of the left inclined surface part 45c. . Therefore, when the cover body 45 is attached to the front wall part 41 of the threshing device 6, the front lower edge of the vertical plate part 62a and the left inclined surface part 45c come into contact with each other, and the lower edge of the vertical plate part 62a The portion and the bottom portion 48 are in contact with each other. For this reason, the wall member 62 is raised from the bottom portion 48.

As shown in FIG. 3, the space S2 between the rotating body 43 and the wall member 62 and the space S1 between the rotating body 43 and the bottom 48 are larger than the space S3 on the left side of the fuselage than the wall member 62. narrow. When the belt 44 rotates, air flows around the belt 44 along the rotation direction of the belt 44 to some extent. Therefore, even if dust etc. enters each of the spaces S1, S2, the dust etc. continues to float along with the air flow around the belt 44, and there is almost no possibility that the dust etc. will accumulate in the spaces S1, S2.

[About the opening of the cover]
As shown in FIGS. 4 and 6, an opening 60 is formed in the left side portion 48a of the V-shaped bottom portion 48. A portion of the bottom portion 48 indicated by L11, that is, a portion of the wall member 62 on the side opposite to where the rotating body 43 is located is recessed toward the rear of the body, and this recessed portion is the opening 60. The opening 60 is offset to the left side of the machine body in the width direction of the threshing device 6. Further, the opening 60 is formed on the left side of the body of the bottom portion 48 relative to the overlapping portion with the rotating body 43 in a plan view. The opening 60 allows foreign matter that has entered the space S3 to fall.

A regulating member 61 is provided in the opening 60, and the regulating member 61 regulates entry of foreign matter from the opening 60 into the space S3. The regulating member 61 has a base portion 61A and a main body portion 61B. The base 61A is formed into a flat plate shape, and two welding bolts 61m, 61m are welded and fixed to the base 61A. The main body portion 61B is a rod-shaped member bent into a C-shape, and a pair of terminal ends of the main body portion 61B are welded and fixed to the base portion 61A.

Two mounting holes for mounting the regulating member 61 are bored in the left inclined surface portion 45c of the cover body 45. The operator inserts the two welding bolts 61m, 61m into the two mounting holes in the left inclined surface part 45c, and inserts the two nuts 61n, 61n into the welding bolt 61m while pressing the base 61A against the left inclined surface part 45c. , 61m. Thereby, the regulating member 61 is supported by the cover body 45. Of the two mounting holes drilled in the left inclined surface portion 45c, one is formed as a round hole and the other is formed as an elongated hole. Therefore, dimensional errors in the distance between the two welding bolts 61m, 61m and the distance between the two mounting holes in the left inclined surface portion 45c are allowed by the long holes, and the operator can easily attach the regulating member 61 to the cover body 45. can be attached to.

When the regulating member 61 is attached to the cover body 45 and the cover body 45 is attached to the front wall portion 41 of the threshing device 6, the main body portion 61B of the regulating member 61 is located in the central region of the opening 60. do. Since the main body portion 61B is configured in a C-shape, the opening portion 60 is partitioned by the main body portion 61B of the regulating member 61 into two openings 60a. As a result, each opening 60a formed in the gap between the main body portion 61B in the opening 60 becomes smaller, making it difficult for foreign matter such as straw waste to enter the internal space of the cover body 45 from the opening 60. Moreover, since the spaces S1, S2 and the space S3 are separated by the wall member 62, even if a foreign object enters the internal space of the cover body 45 from the opening 60, the foreign object remains in the space S3 and It is difficult to enter S1 and S2.

Most of the dust is guided to the space S3 by the air flow along the rotating direction of the belt 44, and tends to accumulate in the part of the bottom 48 on the side of the space S3 that is away from the rotating body 43. Due to the configuration in which the opening 60 is formed below the space S3, there is almost no possibility that dust or the like will accumulate in the space S3. In addition, most of the dust and the like in the internal space covered by the cover body 45 and the bottom part 48 fall downward from the opening 60. Furthermore, even if a lump of dust or the like accumulates around the opening 60 in the bottom portion 48, the lump of dust or the like will not move to the rotating body 43 because the wall member 62 exists.

[Another embodiment]
The present invention is not limited to the configurations illustrated in the above-described embodiments, and other representative embodiments of the present invention will be illustrated below.

(1) In the above-described embodiment, the wall member 62 is composed of the vertical plate portion 62a and the inclined plate portion 62b, but the wall member 62 is not limited to this embodiment. For example, as shown in FIGS. 7 and 8, the wall member 62 may include a vertical plate portion 62o, a first inclined plate portion 62p, and a second inclined plate portion 62q. The first inclined plate part 62p is inclined so that the upper side approaches the side where the rotating body 43 is located in plan view, and the second inclined plate part 62q is further inclined than the first inclined plate part 62p. The second inclined plate portion 62q extends along a portion of the belt 44 on the upper side in the rotational direction than the starting end portion 43s. The extending tip portion of the second inclined plate portion 62q is brought closer to the starting end portion 43s than the extending tip portion of the inclined plate portion 62b shown in the above-described embodiment. From this, with the configuration of the wall member 62 shown in FIGS. 7 and 8, dust and the like are less likely to enter the spaces S1 and S2, compared to the above-described embodiment.

In the example shown in FIG. 7, the upper end of the wall member 62 is stopped at a position on the lower side than the starting end 43s (upper end) of the winding region 43R in the direction in which the upper part of the rotating body 43 rotates. ing. In the example shown in FIG. 7, the upper end of the wall member 62 is stopped at a position below the top point 43t of the rotor 43 in the direction in which the upper portion of the rotor 43 rotates. This configuration makes the configuration of the wall member 62 compact and simple.

In the example shown in FIG. 8, the upper end of the wall member 62 extends to a position on the upper side than the starting end 43s (upper end) of the winding region 43R in the direction in which the upper part of the rotating body 43 rotates. has been done. In the example shown in FIG. 8, the upper end of the wall member 62 extends to a position above the top point 43t of the rotor 43 in the direction in which the upper part of the rotor 43 rotates. . With this configuration, the upper part of the rotating body 43 is firmly covered by the wall member 62, making it difficult for dust to enter the spaces S1 and S2.

In addition to the examples shown in FIGS. 7 and 8, for example, the upper end of the wall member 62 is lower than the starting end 43s (upper end) of the winding region 43R in the direction in which the upper part of the rotating body 43 rotates. It may be extended to a position on the upper side and stopped at a position on the lower side than above the top point 43t of the rotating body 43. Further, the upper end of the wall member 62 extends to a position above the top point 43t of the rotor 43 in the direction in which the upper part of the rotor 43 rotates, and the upper end of the winding region 43R It may be stopped at a position on the lower side than 43s (upper end).

(2) In the above-described embodiment, the upper part of the wall member 62 is bent to follow the outer peripheral shape of the upper part of the rotating body 43, but the present invention is not limited to this embodiment. For example, in the example shown in FIG. 9, the belt 44 extends to the left of the machine with respect to the rotating body 43, and the rotating body 43 rotates clockwise in the plane of the paper of FIG. Further, the upper side portion of the belt 44 rotates downward, and the lower side portion of the belt 44 rotates upward. The upper part of the wall member 62 may extend along the direction in which the upper portion of the belt 44 extends, and may be configured to be farther away from the rotating body 43 as the upper part increases. Also in the example shown in FIG. 9, the wall member 62 is provided facing the space S1.

(3) In the above-described embodiment, the rotating body 43 and the cover body 45 are provided in front of the front wall portion 41, but the present invention is not limited to this embodiment. For example, the rear end of the support shaft of the handling barrel 12 passes through the rear wall (not shown) of the threshing device 6, and the rotating body 43 and A belt 44 may also be provided. A cover body 45 may be attached to the rear wall of the threshing device 6 so as to cover the rotating body 43 and the belt 44.

(4) In the above embodiment, the belt 44 is wound around the rotating body 43 of the input pulley, but the belt 44 may be a chain, and the rotating body 43 may be a sprocket.

(5) In the above-described embodiment, the main body portion 61B of the regulating member 61 is formed into a rod shape, but the main body portion 61B may be formed into a net shape (mesh shape), or the main body portion 61B is formed from punched metal. It's okay to be. In other words, the plurality of openings 60a may be formed in a net shape (mesh shape), or the plurality of openings 60a may be formed in a porous manner. Further, when the main body portion 61B is reticulated (mesh-like), the reticulated (mesh-like) mesh may be formed with fine meshes, and when the main body portion 61B is made of punched metal, the punched metal may be formed with fine meshes. . In other words, the opening 60 may be partitioned into a plurality of openings by the regulating member 61.

(6) In the above embodiment, the opening 60 is provided with one regulating member 61, but the opening 60 may be provided with two or more regulating members 61.

(7) In the above-described embodiment, the threshing device 6 is configured to thresh the tip side portion of the harvested grain culm that is pinched and conveyed by the feed chain 7, but the threshing device 6 is not limited to this embodiment. For example, the threshing device 6 may be configured to throw all the harvested grain culms into the handling chamber 13.

(8) In the above-described embodiment, the elastically deformable sheet member 49 that covers the entrance portion 42 is provided in front of the regulating member 61, but a configuration in which the sheet member 49 is not provided may be used.

(9) In the above-described embodiment, the opening 60 is formed in the portion of the bottom portion 48 on the side opposite to the side where the rotating body 43 is located with respect to the wall member 62 (the lower portion of the space S3); It is not limited to this embodiment. For example, the opening 60 may be formed in a portion of the bottom portion 48 that overlaps the rotating body 43 in a plan view.

Note that the configurations disclosed in the above-described embodiments (including other embodiments, the same applies hereinafter) can be applied in combination with configurations disclosed in other embodiments as long as no contradiction occurs. Further, the embodiments disclosed in this specification are illustrative, and the embodiments of the present invention are not limited thereto, and can be modified as appropriate without departing from the purpose of the present invention.

INDUSTRIAL APPLICATION This invention can be utilized for a combine (for example, a normal type combine, a self-extracting type combine).

4: Reaping section 6: Threshing device 12: Handling barrel 13: Handling room 41: Front wall section (wall section)
43: Rotating body (driving wheel body)
43R: Winding area 43s: Starting end (upper end of winding area)
43f: Termination part (lower end of winding area)
43t: Top point of driving wheel body 44: Belt (endless rotating body)
45: Cover body (cover part)
48: Bottom (cover part)
60: Opening 60a: Opening 61: Regulating member 62: Wall member S1: Space between the lower part of the drive wheel body and the bottom Y1: Rotation axis

Claims (9)

a reaping section that reaps crops in the field and transports them toward the rear of the machine;
A threshing device having a rotatably driven handling cylinder and a handling chamber for accommodating the handling cylinder, into which crops harvested by the reaping section are input, and where the input crops are threshed by the handling cylinder. provided,
An end on one front and rear side of the support shaft of the handling barrel passes through a wall on one front and rear side of the threshing device, and projects further out of the device than the wall of the support shaft. The part is equipped with a drive wheel body around which an endless rotating body that transmits power from a drive source is wound.
a cover part attached to the wall part and covering the drive wheel body;
The cover portion includes a bottom portion that covers the drive wheel body from below,
Among the areas covered by the cover part, a part located on the upper side in the direction in which the lower part rotates with respect to the space between the lower part of the drive wheel body and the bottom part, and facing the space, and a wall member that partitions the space located on the upper side into left and right sides ,
In the combine harvester, a lower end portion of the wall member extends to a vicinity of the bottom portion . a reaping section that reaps crops in the field and transports them toward the rear of the machine;
A threshing device having a rotatably driven handling cylinder and a handling chamber for accommodating the handling cylinder, into which crops harvested by the reaping section are input, and where the input crops are threshed by the handling cylinder. provided,
An end on one front and rear side of the support shaft of the handling barrel passes through a wall on one front and rear side of the threshing device, and protrudes further out of the device than the wall of the support shaft. The part is equipped with a drive wheel body around which an endless rotating body that transmits power from a drive source is wound.
a cover part attached to the wall part and covering the drive wheel body;
The cover portion includes a bottom portion that covers the drive wheel body from below,
Among the areas covered by the cover part, a position facing the space is located on the upper side in the direction in which the lower part rotates with respect to the space between the lower part of the drive wheel body and the bottom part. and a wall member is provided,
An opening is provided in a portion of the bottom portion on a side opposite to the side where the drive wheel body is located with respect to the wall member to allow foreign matter that has entered the space between the wall portion and the cover portion to fall. Combine being formed. The opening is provided with a regulating member that regulates entry of foreign matter from the opening into the space,
The combine harvester according to claim 2 , wherein the opening is partitioned into a plurality of openings by the regulating member. The combine according to any one of claims 1 to 3, wherein the upper part of the wall member is bent to follow the outer peripheral shape of the upper part of the drive wheel body. Any one of claims 1 to 4, wherein the upper end of the wall member extends to a position above the top point of the drive wheel body in the direction in which the upper part of the drive wheel body rotates. Combines as described in Section . Any one of claims 1 to 4, wherein the upper end of the wall member is stopped at a position below the top point of the drive wheel body in the direction in which the upper part of the drive wheel body rotates. The combine harvester described in. The wall member is provided in a state facing a winding region around which the endless rotating body of the drive wheel body is wound,
Any one of claims 1 to 6 , wherein the upper end of the wall member extends to a position higher than the upper end of the winding region in the direction in which the upper part of the drive wheel body rotates. Combines as described in Section. The wall member is provided in a state facing a winding region around which the endless rotating body of the drive wheel body is wound,
Any one of claims 1 to 6 , wherein the upper end of the wall member is stopped at a position on the lower side than the upper end of the winding region in the direction in which the upper part of the drive wheel body rotates. The combine harvester described in. The combine harvester according to any one of claims 1 to 8 , wherein a lower end of the wall member abuts the bottom, and the wall member extends upward from the lower end .

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