JP2017006115A - Harvesting machine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a harvesting machine capable of supporting the rotation shaft of a feeder with a simple support structure so that it can be hardly distorted .SOLUTION: Each right/left boss parts 25 is provided with an end side bearing 105 which is supported at a part 25a far from an endless revolving carrier body in the boss parts 25 and rotationally supports the rotation shaft 24a. A center side bearing 106 which is supported at a part 25a close to the endless revolving carrier body in the boss parts 25 and rotationally supports the rotation shaft 24a is provided between the right/left end side bearings 105.SELECTED DRAWING: Figure 5

Description

  The present invention includes a harvesting machine, and more particularly, a harvesting unit provided in front of the traveling machine body, and a feeder that conveys the harvested product harvested by the harvesting unit toward the traveling machine body, and the feeder is a feeder. A cylindrical boss portion supported by each of the left and right side plate portions of the case, a rotation support shaft supported to be relatively rotatable by the left and right boss portions in a state of being inserted through the left and right boss portions, and the right and left sides The present invention relates to a harvesting machine that includes a rotating ring body that is supported between the side plate portions so as to rotate integrally with the rotating support shaft and is wound around an endless rotating conveyance body.

  Conventionally, as shown in Patent Document 1, in each of the left and right support cylinder parts (corresponding to the boss part), the end of the support cylinder part far from the endless rotation chain (corresponding to the endless rotation conveyance body) A bearing is interposed between the drive portion and the drive shaft (corresponding to the rotation support shaft), and a boss member, a support plate In addition, there is one that is provided in a state of being supported on the side wall (corresponding to the side plate portion) of the feeder case via the fixing member.

JP2015-35984A

When only the part of the rotating support shaft that is far from the endless rotating transport body on the left end side and the right end side is supported by the bearing, a large load is applied to the rotating support shaft due to an increase in the driving load of the endless rotating transport body. When this occurs, the rotation support shaft is easily bent. As the distance between the left and right bearings increases as the length of the boss increases and the distance between the left and right bearings increases, for example, the distance between the input pulley provided at the end of the rotating spindle and the side wall increases. The rotation support shaft is easily bent.
In the conventional case, the left and right end portions of the rotating support shaft can be supported not only by the end side bearing (bearing supported by the boss portion), but also the center portion of the rotating support shaft can be supported by the center side bearing (boss Therefore, it is easy to avoid bending of the rotation support shaft. However, it is necessary to provide a dedicated support structure for supporting the central bearing.

  The present invention provides a harvesting machine that can support a rotating support shaft with a simple support structure so that it is difficult to bend.

The harvester according to the invention is
A harvesting section provided in front of the traveling aircraft;
A feeder that conveys the harvested product harvested by the harvesting unit toward the rear of the traveling machine body,
The feeder is
A cylindrical boss portion supported by each of the left and right side plate portions of the feeder case;
A rotating spindle that is supported by the left and right boss portions so as to be rotatable relative to the left and right boss portions;
Between the left and right side plate portions, a rotating ring body supported on the rotating support shaft in a state of rotating integrally with the rotating support shaft and wound with an endless rotating conveyance body,
In each of the left and right boss portions, an end-side bearing that rotatably supports the rotating support shaft while being supported at a portion of the boss portion that is far from the endless rotation conveyance body,
A central bearing that rotatably supports the rotating support shaft while being supported at a portion of the boss portion close to the endless rotating conveyance body between the left and right end side bearings.

According to this configuration, not only the left and right end portions of the rotary support shaft that are far from the endless rotating conveyance body are supported by the end side bearings, but also the rotary support shafts are supported by the end side bearings. Since the portion closer to the endless rotating conveyance body than the portion to be moved is supported by the center-side bearing, the rotation support shaft can be supported so that it is difficult to bend regardless of a large load.
Since the central bearing is supported by a portion of the boss portion for supporting the end bearing, which is close to the endless rotating conveyance body, a dedicated support structure for the central bearing is unnecessary.

  Therefore, the rotation support shaft can be supported so that it is difficult to bend while the support structure of the rotation support shaft is simple and does not require a dedicated support structure for the center side bearing, and the endless rotating carrier can be supported regardless of an increase in load. It can be driven smoothly.

  According to the present invention, in the above-described configuration, the left and right boss portions are positioned over the inside and outside of the feeder case, and the end-side bearing is located at the portion of the boss portion outside the feeder case. It is preferable that a shaft is supported, and the center side bearing supports the rotation support shaft at a portion of the boss portion in the feeder case.

  According to this configuration, the left and right end side bearings can support the rotation support shaft with a wide support span, and the center side bearing can support the rotation support shaft at a location close to the endless rotating conveyance body, The rotation support shaft can be supported so that it is difficult to bend.

  In the present invention, in the above configuration, a polygonal cross-sectional portion is formed in a central portion of the rotation support shaft, and the rotating ring body is fitted to the polygonal cross-sectional portion with different diameters, and the end portion The side bearing is interposed between the outer peripheral portion of the rotary support shaft and the inner peripheral portion of the boss portion, and the center side bearing is an inner portion of a support portion provided on the rotary support shaft so as not to be relatively rotatable. It is preferable to be interposed between the peripheral portion and the outer peripheral portion of the boss portion.

  According to this configuration, the rotating wheel body and the rotation support shaft can be connected so as not to rotate relative to each other by a simple connection structure in which the rotating wheel body only fits into the polygonal cross section. Thus, even if the central side portion of the rotation support shaft is formed in a polygonal cross-section portion, the center-side bearing is supported by the outer peripheral portion of the boss portion and does not fit into the polygonal cross-section portion. Thereby, although the center side part of a rotation spindle is a polygonal cross-section part, a center side bearing can be stably supported by a boss | hub part.

  In the present invention, in the above configuration, it is preferable that the support portion is connected to the rotating wheel body.

  According to this configuration, the support portion can be supported on the rotation support shaft in a relatively non-rotatable manner by a simple support structure that uses the rotating ring body as a connecting member for connecting the support portion to the rotation support shaft.

  According to the present invention, in the above-described configuration, in the rotating wheel body, on the side of the rotating support shaft on the center side of the ring body main body around which the endless rotation conveyance body is wound, It is preferable that a boss portion to be externally fitted is formed and that the support portion is formed on a side portion on the end portion side of the rotation support shaft with respect to the ring body main body.

  According to this configuration, in order to connect the boss portion and the rotation support shaft for positioning the boss portion with respect to the rotation support shaft, for example, the side opposite to the side where the support portion is located with respect to the ring body main body. Easy to work with.

  In the present invention, in the above configuration, the diameter of the end portion of the boss portion on the central portion side of the rotating support shaft is reduced, and the end portion is inserted into the rotating wheel body until it overlaps with the ring body body. It is preferable.

  According to this configuration, the end portion of the boss portion is positioned on the inner peripheral side of the ring body main body in a state aligned with the ring body main body in the radial direction of the ring body main body, In contrast, the ring body is firmly supported by the end of the boss.

  In the present invention, in the above configuration, an annular flange that rises from a portion of the outer peripheral portion of the boss portion positioned closer to the end portion side of the rotation support shaft than the central bearing toward the inner peripheral portion of the support portion. It is preferable that the shape portion is located on the inner peripheral side of the support portion.

  According to this configuration, dust such as straw scraps can be prevented from entering the side where the central bearing is located from the gap between the boss portion and the support portion by the hook-shaped portion. With a simple measure simply by providing a hook-like portion, it is possible to prevent the rotating support shaft from becoming difficult to rotate due to dust clogging.

  In the present invention, in the above-described configuration, the rotating wheel body is provided with a pair of left and right rotating bodies, and a cylindrical cover that covers a portion of the rotating support shaft located between the left and right rotating wheel bodies, and the left and right side plate portions. And a connecting body for connecting the cover and the cover, and the cover is constituted by a divided cover body connected by a fastener, and the connecting body is connected to the divided cover body. It is preferable that the part is fastened together by the fasteners.

  According to this configuration, the cover can prevent the cover from rotating due to rotation with the rotating ring body, so that not only the cover can prevent the scrap from being wound around the rotation support shaft, but It can prevent wrapping around the cover.

  Further, by connecting the divided cover body with the fastener, the connection body can be connected to the cover all at once, and the cover with the connection body can be easily obtained.

It is a side view which shows the whole combine. It is a top view which shows the whole combine. It is a vertical side view which shows a feeder. It is a cross-sectional top view which shows a feeder. It is a cross-sectional top view which shows the conveyance termination side of a feeder. It is a vertical front view which shows the conveyance termination side of a feeder. It is sectional drawing which shows a rotating ring body. It is a side view which shows the reinforcement structure of a feeder case. It is a perspective view which shows a reinforcement member. It is a perspective view which shows the cover of a decomposition | disassembly state. It is a side view which shows an operation part. It is a top view which shows an operation part and a dust removal apparatus. It is sectional drawing which shows the rotary ring body provided with another implementation structure. It is a top view which shows the rotating spindle with which the winding prevention cover provided with another implementation structure was mounted | worn. FIG. 15 is a cross-sectional view taken along the line XV-XV in FIG. 14. It is a perspective view which shows the winding prevention cover of a decomposition | disassembly state. It is a top view which shows the dust removal apparatus provided with another implementation structure. It is a front view which shows the state which the dust removal case of the dust removal apparatus provided with another implementation structure opened.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
A case where the harvester according to the embodiment of the present invention is applied to a combine will be described. FIG. 1 is a side view showing the entire combine. FIG. 2 is a plan view showing the entire combine.
1 and 2, F is defined as “front” of the traveling aircraft body, B is defined as “rear” of the traveling aircraft body, L is defined as “left” of the traveling aircraft body, and R is defined as “right” of the traveling aircraft body.

  As shown in FIGS. 1 and 2, the combine includes a traveling machine body in which a pair of left and right crawler traveling devices 2 are drivably mounted at the lower part of the machine body frame 1. A driving unit 3 is provided at the front of the traveling machine body. A threshing device 4 and a grain tank 5 are provided at the rear of the traveling machine body. The threshing device 4 and the grain tank 5 are arranged in the lateral direction of the traveling machine body.

  A harvesting section 7 is provided in front of the traveling machine body. Specifically, the feeder 6 is extended from the front part of the threshing device 4 toward the front of the machine body. A harvesting section 7 is connected to the extending end of the feeder 6. An engine 8 is provided at a location below the driving unit 3 in the traveling machine body. The engine 8 is configured to transmit the output of the engine 8 to the crawler traveling device 2, the threshing device 4, the feeder 6, and the harvesting unit 7.

  The feeder 6 is supported by the threshing device 4 so as to be swingable up and down. By swinging the feeder 6 up and down by the lift cylinder 9, the lowering posture of the harvesting unit 7 with the harvesting device 10 positioned near the farm scene and the state where the harvesting device 10 is separated upward from the farm scene. Can be raised and lowered to the non-working posture.

  The combine performs the harvesting work of rice, wheat and the like by running the traveling machine body with the harvesting unit 7 in the descending work posture.

  The harvesting unit 7 cuts the planted cereal and sends the harvested cereal to the rear. The harvesting unit 7 is specifically configured as shown in FIGS.

  The harvesting unit 7 includes a harvesting unit frame 11. The harvesting part frame 11 is connected to the front end of the feeder 6 at the rear end. A transport deck 12 is provided at the bottom of the harvesting unit frame 11. A cutting device 10 is provided at the front end of the transfer deck 12. A pair of left and right dividers 13 are provided at the front end of the harvesting part frame 11. A scraping rotary reel 14 is provided above the reaping device 10. A transverse feed auger 15 and a rotary conveyance body 16 are provided above the conveyance deck 12.

  Of the planted cereals located in front of the traveling machine body, the planted culm to be cut is introduced into the harvesting unit frame 11 by the left and right dividers 13. The tip side of the introduced planted culm is scraped backward by the scraping rotary reel 14. The introduced planted culm stock is cut by the reaping device 10 and the planted cereal is harvested. The harvested cereal meal is supplied to the rotary carrier 16 by the lateral feed auger 15 and sent out to the rear of the harvesting unit 7 by the rotary carrier 16.

  As shown in FIG. 3, a delivery port 17 is formed in the rear wall portion of the harvesting portion frame 11. The delivery port 17 faces the rotary carrier 16. The rotary carrier 16 includes a rotary drum 16a and a plurality of scraping arms 16b. The rotary conveyance body 16 is rotationally driven by the lateral feed auger 15. The harvested cereal meal supplied to the rotary transport body 16 is transported along the transport deck 12 by scraping by each scraping arm 16b, and is fed backward from the feed outlet 17.

The whole of the harvested cereal culm from the rotating carrier 16 to the tip is conveyed by the feeder 6 toward the rear of the traveling machine body and supplied to the threshing device 4. The threshing device 4 performs the threshing process by the handling cylinder 4a (see FIG. 6) that introduces and rotates the whole of the supplied harvested cereal culm from the stock source to the tip of the cereal culm. The threshing device 4 performs a sorting process for separating the grain obtained by the threshing process from dust such as straw scraps. The grain after the sorting process is conveyed from the threshing device 4 to the grain tank 5 and stored in the grain tank 5. The grain tank 5 is provided with a discharge auger 5a.
The grain stored in the grain tank 5 can be taken out by the discharge auger 5a.

The feeder 6 will be described.
FIG. 3 is a longitudinal side view showing the feeder 6. FIG. 4 is a cross-sectional plan view showing the feeder 6. As shown in FIGS. 3 and 4, the feeder 6 includes a feeder case 20 and a pair of left and right endless rotating conveyance bodies 21.

  The feeder case 20 includes a bottom plate portion 20a, a pair of left and right side plate portions 20b, and a top plate portion 20c. The left side plate portion 20b is connected across the left end side of the bottom plate portion 20a and the left end side of the top plate portion 20c. The right side plate portion 20b is connected across the right end side of the bottom plate portion 20a and the right end side of the top plate portion 20c. The bottom plate portion 20a is made of a stainless steel plate. The left and right side plate portions 20b and the top plate portion 20c are made of iron plates. The feeder case 20 is configured in a cylindrical shape. On the feed start end side (front end side) of the feeder case 20, a cereal introduction port 6F is formed. The cereal introduction port 6F communicates with the delivery port 17 of the harvesting section 7. At the conveyance end side (rear end side) of the feeder case 20, a grain outlet 6R is formed. The grain sending outlet 6R communicates with the inside of the threshing apparatus 4. An inspection port 95 is provided in a portion of the top plate portion 20c on the conveyance end side. The inspection port 95 can be opened and closed by removing the lid 96.

  A start end side rotating wheel body 23 is provided inside the feeder case 20 on the transfer start end side. A termination-side rotating wheel body 24 is provided inside the feeder case 20 on the conveyance termination side. The start-end-side rotating wheel body 23 and the terminal-side rotating wheel body 24 are supported by the left and right side plate portions 20b so as to rotate around the rotation axis center along the airframe lateral direction. A pair of left and right endless rotating conveyance bodies 21 are wound around the start end side rotating wheel body 23 and the terminal end side rotating wheel body 24.

  The start-end-side rotating wheel body 23 is rotatable, but is fixed to the attachment position of the left and right side plate portions 20b. The attachment position of the starting end side rotating wheel body 23 in the feeder case 20 does not change regardless of the tensioning operation of the left and right endless rotating transport bodies 21 by the tension mechanism 30.

  A cylindrical boss portion 25 extending in the lateral direction of the traveling machine body is provided on each of the left and right side plate portions 20b. The terminal-side rotating wheel body 24 is supported by the left and right boss portions 25. The left and right boss portions 25 are fixed to the side plate portion 20b, and the terminal-side rotating wheel body 24 is rotatable, but is fixed to the mounting position of the left and right side plate portions 20b. The attachment position of the terminal-side rotating wheel body 24 in the feeder case 20 does not change regardless of the tensioning operation of the left and right endless rotating conveyance bodies 21 by the tension mechanism 30.

  As shown in FIGS. 4 and 5, the terminal-side rotating wheel body 24 includes a rotating support shaft 24a and a pair of left and right rotating wheel bodies 24b. The left and right rotating wheel bodies 24b are constituted by chain sprockets. Hereinafter, the rotating wheel body 24b is referred to as a sprocket 24b. The left and right sprockets 24b are supported by the rotation support shaft 24a so as not to rotate relative to each other.

  As shown in FIGS. 4 and 6, a belt pulley 27 is provided at the end of the rotation support shaft 24 a that protrudes from the left boss portion 25 to the left outside so as not to be relatively rotatable. A transmission case 100 is provided at the front of the threshing device 4. An input shaft 101 is provided on the right side portion of the transmission case 100. An output shaft 102 is provided on the left side portion of the transmission case 100. A plurality of output pulleys 103 are provided on the output shaft 102 so as not to rotate relative to each other. In this embodiment, three output pulleys 103 are provided. A driving force from the engine 8 is transmitted to the input shaft 101. The driving force of the input shaft 101 is transmitted from the rear part of the transmission case 100 to the handling cylinder 4 a of the threshing device 4. The three output pulleys 103 are configured to be transmitted from the two output pulleys 103 on the inner side of the machine body to the sorting unit of the threshing device 4. The transmission belt 104 is wound around the output pulley 103 and the belt pulley 27 that are located on the outermost lateral side of the body among the three output pulleys 103.

  The pair of left and right endless rotating transport bodies 21 are constituted by an endless rotating chain. The left endless rotating conveyance body 21 is wound around a start-end-side rotating wheel body 23 and a left sprocket 24b. The right endless rotating conveyance body 21 is wound around a start-end-side rotating wheel body 23 and a right sprocket 24b. At a plurality of locations in the longitudinal direction (rotation direction) of the endless rotating transport body 21, transport slats 29 are attached across the left and right endless rotating transport bodies 21.

The feeder 6 supplies the threshing cereal from the rotary carrier 16 to the threshing device 4 by the following operation.
The terminal-side rotating wheel body 24 is driven by the belt pulley 27, and the left and right endless rotating transport bodies 21 are driven to rotate in the rotating direction F (see FIG. 3) by the sprocket 24b. The conveying slat 29 is transported downward from the upper side of the starting end side rotating wheel body 23 to the lower side in the starting end side rotating wheel body 23. The transporting slats 29 that are transported downward act on the harvested cereal meal. The harvested cereal meal from the rotary transport body 16 is scraped between the endless rotating transport body 21 and the bottom plate portion 20a by the transport slat 29 at the grain shed introduction opening 6F. The harvested cereal culm is transported rearward along the bottom plate portion 20a by the transport action through the transport slats 29 of the left and right endless rotating transport bodies 21. The transport slat 29 is lifted and transferred from the lower side to the upper side of the terminal side rotating wheel body 24 in the terminal side rotating wheel body 24. The transporting slats 29 that are moved up and forward act to feed the harvested cereal meal. The harvested cereals that have been transported to the transport end are fed backward from the cereal feed outlet 6 </ b> R by the transport slats 29 and supplied to the threshing device 4.

As shown in FIG. 5, the rotation support shaft 24 a of the terminal-side rotating wheel body 24 is rotatably supported by the left and right boss portions 25 in a state where the left and right boss portions 25 are inserted.
Specifically, each of the left and right boss portions 25 supports the end-side bearing 105 at a portion 25 a far from the endless rotating transport body 21, and the center-side bearing 106 at a portion 25 b close to the endless rotating transport body 21. The rotary support shaft 24a is rotatably supported via the end side bearing 105 and the center side bearing 106. The central bearing 106 is located between the left and right end bearings 105. In the present embodiment, the end side bearing 105 and the center side bearing 106 are constituted by bearings, but they are not limited to bearings, and may be constituted by oil-impregnated bearings, impregnated metals, or the like. Of the rotating support shaft 24 a, the portions far from the endless rotating transport body 21 on the left end side and the right end side are not only supported by the end side bearing 105, but also supported by the end portion side bearing 105 of the rotating support shaft 24 a. A portion closer to the endless rotating transport body 21 than the portion to be moved is supported by the central bearing 106.
Even if a large load is applied to the rotation support shaft 24a due to an increase in the driving load of the endless rotating conveyance body 21, the rotation support shaft 24a is supported so that it is difficult to bend.

As shown in FIG. 5, the left and right boss portions 25 are provided so as to be located over the inside and outside of the feeder case 20. The end side bearing 105 in each of the left and right boss portions 25 is provided so as to support the rotation support shaft 24a at a portion of the boss portion 25 outside the feeder case. The central bearing 106 in each of the left and right boss portions 25 is provided so as to support the rotation support shaft 24a at a portion of the boss portion 25 in the feeder case. In the present embodiment, the central bearing 106 is provided to be supported by a portion of the boss portion 25 in the feeder case, but is not limited to being provided in the feeder case, and may be provided to be supported by a portion outside the feeder case. .
The belt pulley 27 is coupled to the outermost lateral output pulley 103 of the three output pulleys 103 by the transmission belt 104 so that the boss portion 25 extends from the feeder case 20 to the lateral outer side. In this case, the left and right end side bearings 105 can support the rotation support shaft 24a with a wide support span. Even if the support spans of the left and right end bearings 105 are widened, the center bearing 106 can support a portion of the rotating support shaft 24a that is close to the endless rotating conveyance body 21.

  As shown in FIG. 5, circular cross sections 24 </ b> M are formed at both end portions of the rotation support shaft 24 a, and the left and right end side bearings 105 respectively include an outer peripheral portion of the circular cross section 24 </ b> M and an inner peripheral portion of the boss portion 25. It is intervened between.

  As shown in FIGS. 5 and 7, a polygonal cross section 24K is formed in the central portion of the rotation support shaft 24a, and each of the pair of left and right sprockets 24b is fitted to the polygonal cross section 24K with different diameters. Yes. Specifically, the polygonal cross-section 24K of the rotation support shaft 24a is configured such that the longitudinal cross-sectional shape is a hexagonal shape. In each of the pair of left and right sprockets 24b, the boss portion 108 is fitted on the polygonal cross section 24K, and the hexagonal inner peripheral shape of the boss portion 108 and the hexagonal outer peripheral shape of the polygonal cross section 24K are The boss portion 108 and the polygonal cross-sectional portion 24K are engaged so as not to be relatively rotatable. A positioning bolt 109 is provided on the boss portion 108. The sprocket 24b can be fixed at the mounting position on the rotation support shaft 24a by tightening the positioning bolt 109 and engaging with the rotation support shaft 24a. In the present embodiment, the longitudinal sectional shape of the polygonal cross section 24K is a hexagonal shape, but it is not limited to a hexagonal shape, and may be formed in a rectangular shape, a pentagonal shape, or the like.

  A pair of left and right cylindrical support portions 107 are provided on the polygonal cross section 24K of the rotation support shaft 24a so as not to rotate relative to each other, and each of the pair of left and right center side bearings 106 is connected to the rotation support shaft 24a of the boss portion 25. It is interposed between the outer peripheral part of the end part 25 b (part 25 b close to the endless rotating transport body 21) on the center side and the inner peripheral part of the support part 107. Each of the pair of left and right support portions 107 is connected to the sprocket 24b so as to be relatively non-rotatable on the polygonal cross section 24K.

  As shown in FIGS. 5 and 7, in each of the pair of left and right sprockets 24b, a boss is formed on the side portion on the central side of the rotation support shaft 24a with respect to the ring body main body 24H around which the endless rotating conveyance body 21 is wound. A portion 108 is formed, and a support portion 107 is formed on a side portion on the end portion side of the rotation support shaft 24a with respect to the ring body main body 24H. The respective end portions 25b of the left and right boss portions 25 are formed in a state of being reduced in diameter so that the outer diameter is smaller than a portion different from the end portion 25b, such as a portion supporting the end portion side bearing 105. The end portion 25b is inserted into the sprocket 24b up to a position where it overlaps with the ring body main body 24H and the central bearing 106. The end portion 25b of the boss portion 25 is positioned on the inner peripheral side of the ring body main body 24H in a state of being aligned with the ring body main body 24H in the radial direction of the ring body main body 24H, and the load applied to the ring body main body 24H from the endless rotating conveyance body 21. Against this, the ring body 24H can be firmly supported by the end 25b of the boss 25.

  In each of the pair of left and right sprockets 24b, a hole circlip 110, a resin collar 111, an oil seal 112, and a dust seal 113 are interposed between the support portion 107 and the boss portion 25. The dust seal 113 constitutes an annular bowl-shaped portion that rises from a portion of the outer peripheral portion of the boss portion 25 located closer to the end portion side of the rotation support shaft 24 a than the central bearing 106 toward the inner peripheral portion of the support portion 107. To do. The hook-shaped portion can prevent dust such as straw scraps from entering the side where the central bearing 106 is located from the gap between the boss portion 25 and the support portion 107. As the bowl-shaped portion, not only the dust seal 113 but also an annular member made of metal or resin can be adopted. Moreover, as a hook-shaped part, the member integrally formed in the boss | hub part 25 is not restricted to the member different from the boss | hub part 25, but can be employ | adopted.

  Each of the left and right boss portions 25 includes a boss portion main body 25H and an extended boss portion 25E that are separately formed and connected. A portion of the boss portion 25 that supports the end side bearing 105 and a connecting member 26 described later is constituted by a boss portion main body 25H. The part which supports the center side bearing 106 among the boss | hub parts 25 is comprised by the extended boss | hub part 25E.

  As shown in FIG. 4, a connecting member 26 is attached to each of the left and right boss portions 25 so as to be relatively rotatable. The left and right connecting members 26 are connected to the threshing device 4 as shown in FIG. 6 to support the feeder 6 so that the threshing device 4 can swing up and down. A sprocket 28 is provided in a portion that protrudes outward from the right boss portion 25 of the rotation support shaft 24a so as not to be relatively rotatable. The sprocket 28 transmits the driving force of the rotation support shaft 24 a to the harvesting unit 7.

As shown in FIG. 4, a cylindrical cover 80 is attached to the terminal-side rotating wheel body 24. The cover 80 covers a portion between the left and right sprockets 24b of the rotation support shaft 24a. The left and right end portions of the cover 80 are engaged with the groove-type support portions 24c of the left and right sprockets 24b so as to be relatively rotatable. A connecting body 90 is connected across the cover 80 and the reinforcing member 70.
The connecting body 90 prevents the cover 80 from rotating with the sprocket 24b. The connecting body 90 is connected to a bracket 70 a included in the reinforcing member 70 by a connecting bolt. The cover 80 prevents straw scraps and the like from being wound around the rotation support shaft 24a. The connecting body 90 prevents the cover 80 from being rotated with the sprocket 24b, and prevents the cover 80 from being wrapped with straw scraps.

The cover 80 is constituted by four divided cover bodies 81, 82, 83, 84 as shown in FIGS.
That is, each of the four division | segmentation cover bodies 81-84 is comprised so that a longitudinal cross-sectional shape may become a semicircle shape, as shown in FIG. Reinforcing ribs 98 extending in the circumferential direction of the cover 80, reinforcing ribs 99 extending in the direction along the axis of the cover 80, and columnar connecting portions 88 are provided on the inner peripheral surfaces of the four divided cover bodies 81 to 84. Yes. In the present embodiment, each of the divided cover bodies 81 to 84 is made of a synthetic resin, but is not limited to resin and may be made of sheet metal.

  As shown in FIGS. 4, 5, and 6, the longest first divided cover body 81 among the four divided cover bodies 81, 82, 83, 84 has both ends at the support portions 24 c of the left and right sprockets 24 b. Can be mounted between the left and right sprockets 24b. As shown in FIG. 7, a gap S <b> 2 that allows the oil seal 112 to slide is formed between the cylinder portion that houses the oil seal 112 of the sprocket 24 b and the boss portion 25. An interval D1 between the oil seal 112 and the dust seal 113 is set wider than an interval D2 between the boss portion 108 and the boss portion 25. That is, when the first divided cover body 81 is mounted between the left and right sprockets 24b, the space between the left and right sprockets 24b can be widened by sliding the sprocket 24b toward the boss portion 25.

  4 and 6, the second divided cover body 82 of the four divided cover bodies 81, 82, 83, 84 is the first divided cover body 81 mounted between the left and right sprockets 24b. A screw type over the connecting portion 88 of each of the second divided cover body 82 and the first divided cover body 81 with the left end overlapped with the left end and engaged with the support 24c of the left sprocket 24b. Are attached to the first divided cover body 81 by being fastened and fixed to the first divided cover body 81.

  As shown in FIGS. 4 and 6, the third divided cover body 83 among the four divided cover bodies 81, 82, 83, 84 is the first divided cover body 81 mounted between the left and right sprockets 24b. A screw type over the connecting portion 88 of each of the third divided cover body 83 and the first divided cover body 81 with the right end portion overlapped with the right end side and engaged with the support portion 24c of the right sprocket 24b. Are attached to the first divided cover body 81 by being fastened and fixed to the first divided cover body 81.

  As shown in FIGS. 4 and 6, the fourth divided cover body 84 of the four divided cover bodies 81, 82, 83, 84 is assembled with the second divided cover body 82 and the third divided cover body 83. Of the first divided cover body 81 in a state of being stacked, the fourth divided cover body 84 and the first divided cover are superposed on a portion between the second divided cover body 82 and the third divided cover body 83. A screw-type fastener 89 is mounted over each connecting portion 88 of the body 81 and is fastened and fixed to the first divided cover body 81 to be assembled to the first divided cover body 81.

  The 2nd division | segmentation cover body 82 and the 3rd division | segmentation cover body 83 are comprised so that a shape, a magnitude | size, and a structure may become the same. In other words, the second divided cover body 82 can be assembled on the right end side of the first divided cover body 81 by replacing the third divided cover body 83 with the third divided cover body 83, and the third divided cover body 83 can be assembled with the first divided cover body 83. The second divided cover body 82 can be replaced and assembled on the left end side of the body 81.

The connecting body 90 is fastened and fastened together with a fastener 89 to the connecting portion 88 of the fourth divided cover body 84.
That is, the connection hole 90 a is provided at one end of the connection body 90. By attaching and fastening the fastener 89 attached to the connecting hole 90a over the connecting portion 88 of the fourth divided cover body 84 and the connecting portion 88 of the first divided cover body 81, a fourth divided cover body is obtained. 84 can be fastened and connected to the first divided cover body 81, and the connecting body 90 can be fastened and fixed to the connecting portion 88 of the fourth divided cover body 84 together with this fastening. The fourth divided cover body 84 is fastened and connected to the first divided cover body 81 by a fastener 89 to assemble the cover 80, and the connecting body 90 is connected to the fourth divided cover body 84 of the cover 80. I can do it all at once.

  As shown in FIG. 4, the reinforcing member 70 is laid across the left and right side plate portions 20b. By making the space between the reinforcing member 70 and the cover 80 relatively wide, it is difficult to catch the cereals that have not entered the threshing device 4 and have flowed back to the upper side of the sprocket 24b across the cover 80 and the reinforcing member 70. Further, the gap S3 between the reinforcing member 70 and the cover 80 on both lateral sides of the connecting body 90 is widened so that the backflowed cereal can easily fall from the gap S3 to the bottom plate portion 20a of the feeder case 20.

  As shown in FIG. 4, the left and right boss portions 25 are connected to the reinforcing member 70 by a connecting body 69 in the feeder case 20. As shown in FIGS. 4, 5, and 8, reinforcing members 91, 92, 93, 94 and a pair of upper and lower reinforcing members 97 are provided on the outer surface sides of the left and right side plate portions 20 b. The reinforcing member 91 is formed of a bent sheet metal, and is attached over a portion of the side plate portion 20b that is positioned on the front side of the reinforcing member 70 and a portion where the boss portion 25 is provided. A bent columnar portion 91 a is provided at the front end portion of the reinforcing member 91. The bent columnar portion 91a is formed so as to extend in the vertical direction of the feeder case 20 and has a U-shaped cross section. The reinforcing member 92 is formed of a bent sheet metal and is attached to the front surface side of the reinforcing member 91. The reinforcing member 93 extends forward from the boss portion 25. The pair of upper and lower reinforcing members 97 are connected across the front end portion of the reinforcing member 93 and the surface side of the reinforcing member 91. The reinforcing member 94 is connected across the rear end portion of the reinforcing member 92 and the front end portion of the reinforcing member 93. Even if the gap between the cover 80 and the reinforcing member 70 is widened, the strength of the feeder case 20 can be secured by this reinforcing structure.

  As shown in FIGS. 1 and 2, a dust removal device 115 is provided at the front portion of the feeder 6. The dust removal device 115 includes a dust suction fan 115a that is rotationally driven by the electric motor 115b. The dust removal device 115 sucks dust that has entered the feeder case 20 into the dust discharge case 116 through the dust suction port 20d of the top plate portion 20c. The dust is discharged from a discharge port that opens downward at the lateral end of the dust removal case 116. A plurality of capturing members 116a are provided in the dust suction port 20d. In the present embodiment, the capturing member 116a is formed of a round bar-shaped bar member. The cereals flowing toward the dust suction fan 115a are captured by the capturing member 116a.

  As shown in FIGS. 1, 2, and 11, an operation panel 117 is provided in a side portion of the driving seat 120 in the driving unit 3. The operation panel 117 is provided with a main transmission lever 119 and a sub transmission lever 121. A breaker switch 118 for the dust removal device is provided in a portion of the operation panel 117 near the main transmission lever 119. When the mowing clutch is engaged, operating the breaker switch 118 to activate the dust suction fan 115a. Since the breaker switch 118 is located near the main speed change lever 119 that is easy to operate from the driver's seat 120, the breaker switch 118 is easily reachable. In general, when traveling, the main speed change lever 119 is always supported and the hand can be quickly moved from the main speed change lever 119 to the breaker switch 118, so that the breaker switch 118 can be operated quickly and easily. If cereal grains or straw scraps adhere to the capturing member 116a and the dust suction fan 115a, the electric motor 115b may be loaded and the breaker switch 118 may be turned off. In this case, the dust suction fan 115a can be driven by operating the breaker switch 118 quickly and easily.

[Another Example]
(1) FIG. 14 is a plan view showing a rotation support shaft 24a on which a wrapping prevention cover 130 having another embodiment structure is mounted. 15 is a cross-sectional view taken along the line XV-XV in FIG.

  As shown in FIG. 14, the rotation support shaft 24a is supported by a shaft support structure having the same configuration as the shaft support structure that supports the rotation support shaft 24a shown in FIG.

  As shown in FIGS. 14 and 15, the wrapping prevention cover 130 having another implementation structure is mounted over a pair of left and right boss cover 25 </ b> A. The boss cover 25A is mounted across the terminal-side rotating wheel body 24 and the rotating shaft 24a so as to be rotatable relative to the terminal-side rotating wheel body 24 and the rotating shaft 24a. A bellows is interposed between the boss portion cover 25A and the rotation support shaft 24a.

  As shown in FIGS. 15, 16, and 17, the anti-winding cover 130 includes a first divided cover 131 and a second divided cover 132. The 1st division | segmentation cover 131 is comprised by the sheet-metal member whose longitudinal cross-sectional shape is U shape. The 2nd division | segmentation cover 132 is comprised by the sheet-metal member whose longitudinal cross-sectional shape is a groove shape.

  The opening side end portion 131 a of the first divided cover 131 and the opening side end portion 132 a of the second divided cover 132 are connected by a plurality of connecting screws 133. The opening-side end portion 132a of the second divided cover 132 is connected to the mounting surface 134c of the support member 134 by a plurality of connecting screws 135 alone. As shown in FIG. 16, a cutout 139 is formed in a portion of the first divided cover 131 corresponding to the two connecting screws 135 closer to the center in the axial direction in the first divided cover 131. The two connecting screws 135 do not exert a fastening action on the first divided cover 131. The first divided cover 131 is located on the outer peripheral side with respect to the second divided cover 132. The second divided cover 132 is fastened to the mounting surface 134c of the support member 134 by a connecting screw 135 at locations where the notches 139 are located on both sides of the circumferential end. By releasing the attachment of the first divided cover 131 with the connecting screw 133, it is possible to remove only the first divided cover 131 backward while keeping the second divided cover 132 attached to the support member 134.

  The support member 134 includes a support part 134a that supports the first divided cover 131 and the second divided cover 132, and attachment parts 134b provided at both ends of the support part 134a. The support member 134 is supported by the left and right boss part covers 25 </ b> A by the attachment part 134 b being fixed to the boss part cover 25 </ b> A by the connecting screw 136. A flat plate-shaped locking member 137 extends forward from the upper part of the second divided cover 132. The pair of left and right engaging portions 138 provided at the front end portion of the locking member 137 and the reinforcing member 70 are engaged. Due to the engagement between the anti-rotation member 137 and the reinforcing member 70, the anti-winding cover 130 is prevented from rotating. As shown in FIG. 15, the attachment posture of the wrapping prevention cover 130 is a slightly upwardly attached posture. In the vicinity of the sprocket 24b, the space between the lower portion of the anti-winding cover 130 on the second divided cover 132 side and the endless rotating transport body 21 is widened, so that cereals and straw scraps endlessly rotate with the anti-winding cover 130. It is difficult to clog with the carrier 21.

(2) FIG. 17 is a plan view showing a dust exhaust device 115 having another implementation structure. FIG. 18 is a front view showing a state in which the dust removal case 116 of the dust removal device 115 having another implementation structure is opened.

  In the dust removal device 115 having another implementation structure, the lateral end of the dust removal case 116 on the operation unit side is supported by the feeder case 20 via the hinge 122. As shown in FIG. 17, when the dust removal case 116 is lifted and swung about the longitudinal axis P of the hinge 122 as a swing center, the dust removal case 116 is in an open posture and the upper part of the dust suction port 20d can be opened. Thus, it is easy to clean the dust adhering to the capturing member 116a and the like. Further, the dust suction fan 115a, the electric motor 115b, and the like can be easily cleaned and inspected from below the dust removal case 116. When the dust removal case 116 is opened, the support rod 123 is moved up and down from the storage location on the front and outside of the dust suction port 20d, and the free end portion of the support rod 123 is engaged with the engagement portion 124 of the dust removal case 116. Thus, the dust removal case 116 can be held in the open posture by the support rod 123. The support rod 123 is provided with a handle member 123a for operation. When the dust discharging case 116 is in a closed position, the catch clip 125 provided between the dust discharging case 116 and the feeder side on the front and rear sides of the dust discharging case 116 is put into an active state to catch the dust discharging case 116. The clip 125 can be locked in the closed position.

(3) FIG. 13 is a cross-sectional view showing a sprocket 24b having another embodiment structure. In the sprocket 24b, the ring body main body 24H is provided on the boss portion.

(4) In the above-described embodiment, the rotation support shaft 24a on the conveyance end side is supported by the end side bearing 105 and the center side bearing 106. However, the rotation support shaft on the conveyance start end side or the conveyance is shown. You may comprise so that the rotation support shaft of both the termination | terminus side and the conveyance start end side may be supported by the edge part side bearing 105 and the center side bearing 106. FIG.

(5) In the above-described embodiment, an example is shown in which the left and right two portions of the rotation support shaft 24a are supported by the central bearing 106 between the left and right end side bearings 105, but only one location of the rotation support shaft 24a. May be configured to be supported by the central bearing 106.

(6) In the above-described embodiment, the end portion 25b of the boss portion 25 is configured to enter the inside of the support portion 107 on the rotation support shaft 24a side, and the center-side bearing 106 is formed on the outer peripheral portion of the end portion 25b and the support portion 107. However, the end portion of the boss portion 25 is configured to be positioned outside the support portion 107 on the rotation support shaft 24a side, and the center side bearing 106 is configured as the boss portion. You may implement by interposing between the inner peripheral part of the edge part of 25, and the outer peripheral part of a support part.

(7) In the above-described embodiment, an example in which the cover 80 is provided has been described. However, the cover 80 may be omitted.

(8) In the above-described embodiment, an example in which the cover 80 is configured by the four divided cover bodies 81, 82, 83, and 84 has been described, but the number of divided cover bodies other than four, such as three, five, etc. It may be configured.

(9) In the above-described embodiment, an example in which the endless rotating conveyance body 21 is configured by a chain has been described.

(10) In the above-described embodiment, an example in which the crawler traveling device 2 is provided may be provided with wheels instead of the crawler traveling device 2.

  INDUSTRIAL APPLICABILITY The present invention can be applied to harvesters that harvest various crops such as buckwheat and corn, in addition to combine harvesting rice and wheat.

6 Feeder 7 Harvesting part 20 Feeder case 20b Side plate part 21 Endless rotating conveyance body 24a Rotating support shaft 24b Rotating ring body 24H Ring body main body 24K Polygon cross section 25 Boss part 25a Distant part 25b Close part 70 Reinforcement member 80 Cover 81 Division Cover body 84 Divided cover body 88 Connection portion 89 Fastener 90 Connection body 105 End side bearing 106 Center side bearing 107 Support portion 113 Hook-shaped portion (dust seal)

Claims (8)

A harvesting section provided in front of the traveling aircraft;
A feeder that conveys the harvested product harvested by the harvesting unit toward the rear of the traveling machine body,
The feeder is
A cylindrical boss portion supported by each of the left and right side plate portions of the feeder case;
A rotating spindle that is supported by the left and right boss portions so as to be rotatable relative to the left and right boss portions;
Between the left and right side plate portions, a rotating ring body supported on the rotating support shaft in a state of rotating integrally with the rotating support shaft and wound with an endless rotating conveyance body,
In each of the left and right boss portions, an end-side bearing that rotatably supports the rotating support shaft while being supported at a portion of the boss portion that is far from the endless rotation conveyance body,
A harvester comprising: a central bearing that rotatably supports the rotating support shaft while being supported at a portion of the boss portion close to the endless rotating conveyance body between the left and right end side bearings. Machine. Each of the left and right bosses is located over the inside and outside of the feeder case,
The end side bearing supports the rotating support shaft at a portion of the boss portion outside the feeder case,
The harvesting machine according to claim 1, wherein the central bearing supports the rotating support shaft at a portion of the boss portion in a feeder case. Forming a polygonal cross-section in the central portion of the rotating spindle;
The rotating ring body is fitted to the polygonal cross section with different diameters,
The end portion side bearing is interposed between an outer peripheral portion of the rotation support shaft and an inner peripheral portion of the boss portion,
The harvest according to claim 1 or 2, wherein the center-side bearing is interposed between an inner peripheral portion of a support portion provided on the rotary support shaft so as not to be relatively rotatable and an outer peripheral portion of the boss portion. Machine.   The harvester according to claim 3, wherein the support portion is connected to the rotating wheel.   In the rotating ring body, a boss portion that is fitted onto the rotating support shaft is formed on a side portion on the center side of the rotating support shaft with respect to the ring body main body around which the endless rotating conveyance body is wound. And the said harvesting machine of Claim 4 with which the said support part is formed in the side part by the side of the edge part of the said rotation spindle with respect to the said ring body main body.   6. The harvest according to claim 5, wherein an end portion of the boss portion on a central portion side of the rotating support shaft is reduced in diameter, and the end portion is inserted into the rotating wheel body to a position overlapping with the wheel body main body. Machine.   Of the outer peripheral portion of the boss portion, an annular hook-shaped portion that rises from a portion located on the end side of the rotation support shaft with respect to the central bearing toward the inner peripheral portion of the support portion. The harvester as described in any one of Claims 3-6 located in the circumference side. A pair of left and right rotating wheels are provided,
A cylindrical cover that covers a portion of the rotating spindle that is located between the left and right rotating wheel bodies;
A connecting member for connecting the cover and the reinforcing member horizontally mounted on the left and right side plate portions,
The cover is constituted by a divided cover body connected by a fastener,
The harvesting machine according to any one of claims 1 to 7, wherein the coupling body is fastened and fastened together with the fastener to the coupling portion of the divided cover body.

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