JP2021083321A - Harvester - Google Patents

Abstract

To provide a harvester capable of efficiently sucking dust scattering around a harvesting part and suppressing adhesion of dust to a cabin, etc. covering an operation part by improving a suction amount of a dust discharging device.SOLUTION: A harvester includes: a harvesting part 5 provided in the front part of a machine body for harvesting crops in a farm field; a conveying device 6 having a conveyance mechanism 9 and a conveyance case 7 for housing the conveyance mechanism 9, which is connected to the rear part of the harvesting part 5 for conveying crops harvested by the harvesting part 5 toward the rear of the machine body; an operation part arranged side by side with the conveying device 6 in the rear of the harvesting part 5; and a dust discharging device 8 having a rotation fan 44 and a housing 30 for housing the rotation fan 44, which, supported by the conveyance case 7, sucks dust D around the harvesting part 5 by the rotation of the rotation fan 44, and discharges it to a side away from the operation part. A dust suction port 34 is formed in the housing 30, which is opened to the outside of the housing 30 for directly sucking the dust D around the harvesting part 5.SELECTED DRAWING: Figure 4

Description

The present invention includes a harvesting unit that cuts crops in a field, a transport device that is connected to the rear side of the harvesting unit and transports the harvested crops harvested in the harvesting unit, and a driving unit that sucks dust by rotating a rotating fan. It relates to a harvester equipped with a dust collecting device that discharges to a side away from the harvester.

Conventionally, the harvester is provided with a dust suction device (corresponding to the “rotary fan” in the present invention) that sucks dust generated by the harvesting operation by the harvesting section and discharges the sucked dust to the outside. (See, for example, Patent Document 1.).

Japanese Unexamined Patent Publication No. 2014-124136

The dust collecting device of the prior art sucks the scattered dust from the introduction port provided at the front end of the transporting device and sends it to the dust collecting device through the inside of the transporting device. However, since the harvested crops are present inside the transport device, when the amount of harvested crops is large, the path through which the dust flows is narrowed, and the amount of dust that can be sucked may be reduced. As a result, dust that has not been sucked adheres to the cabin that covers the operating unit, and when the work is performed while looking at the outside from the inside of the cabin, it may be difficult to visually recognize the external situation.

Therefore, in view of the above problems, the present invention efficiently sucks the dust scattered around the harvesting part by improving the suction amount of the dust discharging device, and suppresses the dust from adhering to the cabin or the like covering the operating part. The purpose is to provide a harvester that can be used.

The harvester of the present invention is provided at the front portion of the machine body, has a harvesting section for harvesting crops in the field, a transport mechanism, and a transport case for accommodating the transport mechanism, and is connected to the rear portion of the harvest section. It houses a transport device that transports the harvested material harvested in the harvesting section toward the rear of the machine, an operation unit that is arranged side by side with the transport device behind the harvesting section, and a rotary fan and the rotary fan. The housing is provided with a dust discharging device having a housing, which is supported by the transport case and sucks dust around the harvesting portion by rotation of the rotating fan and discharges the dust to a side away from the operating portion. A dust suction port that opens to the outside of the housing is formed, and is configured to directly suck dust around the harvesting portion from the dust suction port.

According to the present invention, since the housing of the dust collecting device is formed with a dust suction port that opens to the outside of the housing, the dust scattered to the outside of the transport device can be directly sucked. Since the dust exhaust device efficiently sucks the dust scattered around the harvesting part without being affected by the amount of harvested crops, it is possible to prevent the dust scattered around the harvesting part from adhering to the cabin covering the operating part. can do.

In the present invention, it is preferable that the housing is placed and supported on the top plate of the transport case, and the dust suction port is formed on the front wall portion of the housing.

According to the present invention, since the dust suction port is provided in a state of facing the harvesting portion which is a source of dust, the dust around the harvesting portion can be efficiently sucked.

In the present invention, it is preferable that the housing is provided with a discharge portion for discharging sucked dust on a wall portion different from the front wall portion.

According to the present invention, it is possible to prevent the occurrence of a short circuit due to the formation of the discharge portion on the same wall portion as the wall portion on which the dust suction port is formed. Therefore, the dust discharging device can efficiently suck and discharge the dust.

In the present invention, an eaves portion is provided in a portion of the housing corresponding to the dust suction port, and the eaves portion includes an upper surface portion extending forward from the upper edge portion of the dust suction port and the dust suction port. A lower surface portion extending forward from the lower edge portion and left and right side surface portions provided over the upper surface portion and the lower surface portion are provided, and the front end edge of the upper surface portion is the front end of the lower surface portion. It is preferable that the front end edge of the upper surface portion is located in front of the edge and the width of the front end edge of the upper surface portion is wider than the width of the front end edge of the lower surface portion.

According to the present invention, by providing the eaves portion in the portion corresponding to the dust suction port, the direction of the air flow when sucking the dust is regulated, and the flow of the air flow is directed in a certain direction. Therefore, it is possible to prevent the airflow for sucking the dust from being dissipated, and the dust can be sucked efficiently. Further, since the eaves are configured to extend forward and the upper surface is larger than the lower surface, the dust from the harvesting portion provided in front of the dust collecting device can be collected. It can be sucked efficiently.

In the present invention, it is preferable that the eaves portion is extended to a position corresponding to the rear end portion of the harvesting portion.

According to the present invention, since the eaves portion extends to the harvesting portion, which is the source of the dust, the dust from the harvesting portion can be efficiently sucked.

In the present invention, a first opening is formed in a portion of the transport case facing the dust collecting device, a second opening is formed in a portion of the housing facing the first opening, and the first opening is formed. It is preferable that the dust and the second opening are communicated with each other, and the dust around the harvesting portion is sucked into the dust discharging device through the first opening and the second opening. is there.

According to the present invention, it is possible to suck the dust scattered outside the transport case and also the dust scattered inside the transport case through the first opening and the second opening. That is, it is possible to suck the dust scattered both inside and outside the transport case with one dust discharging device.

In the present invention, it is preferable that the dust discharging device is configured to discharge the dust to a side away from the operating unit.

According to the present invention, since the dust evacuating device discharges the sucked dust to the side away from the operating unit, it is possible to prevent the dust discharged from the dust evacuating device from adhering to the cabin or the like covering the operating unit. ..

It is a side view which shows the ordinary type combine. It is a top view which shows the ordinary type combine. It is a side view of the transport device which shows the transmission structure of a dust discharge device. It is a longitudinal side view of the dust exhaust device. FIG. 3 is a cross-sectional view taken along the line VV of FIG. It is a front view of the dust removal cover of a dust removal device. It is an exploded perspective view which shows the structure of the dust cover of a dust exhaust device. It is an exploded perspective view which shows the transmission structure in a dust removal device. FIG. 3 is a cross-sectional view taken along the line IX-IX of FIG.

A mode for carrying out the present invention will be described with reference to the drawings. In the following description, the direction of the arrow F (see FIGS. 1 and 2) is the “front side”, the direction of the arrow B (see FIGS. 1 and 2) is the “rear side”, and the direction of the arrow L (see FIG. 2). The direction is "left side" and the direction of arrow R (see FIG. 2) is "right side".

[Overall configuration]
1 and 2 show a crawler-type full-culm-filled combine (corresponding to the "harvester" according to the present invention). The body of the harvesting machine is equipped with an engine E, and the front part of the body is provided with a harvesting part 5 for harvesting crops in the field. A transport device 6 for transporting the harvested product harvested by the harvesting unit 5 toward the rear of the machine body is connected to the rear portion of the harvesting unit 5. Further, behind the harvesting unit 5, on the right side of the transport device 6, an operation unit 1 arranged side by side with the transfer device 6 and a cabin 2 covering the operation unit 1 are provided. A threshing device 3 and a grain tank 4 are provided behind the operation unit 1 in a state of being arranged side by side in the left-right direction of the machine body.

[About the composition of the harvest section]
The harvesting section 5 is configured to be able to move up and down in the vertical direction around the axis along the left-right direction of the machine body. The harvesting unit 5 is in an ascending state during non-harvesting work such as when the main harvester is turning, and is in a descending state close to the field scene during harvesting work.

As shown in FIGS. 1 and 2, the harvesting unit 5 has a scraping reel 16 that scrapes the planted grain culm backward by being rotationally driven, and a planted grain culm that is scraped by the scraping reel 16. A cutting device 13 for cutting the culms and a lateral feeding device 17 for feeding the reels to the rear transporting device 6 are provided. As shown in FIG. 4, a delivery port 18 is formed at the rear of the harvesting section 5, and the harvested product is sent from the delivery port 18 to the transport device 6.

[About the configuration of the transport device]
As shown in FIG. 4, the transport device 6 is provided with a chain rotation type transport mechanism 9 and a tubular transport case 7 for accommodating the transport mechanism 9. A front rotating body 11 is rotatably supported at the front end of the transport case 7. A front rotating body 11 is rotatably supported at the rear end of the transport case 7.

The transport mechanism 9 includes a front rotating body 11 rotatably supported by the front end of the transport case 7, a rear rotating body 12 rotatably supported by the rear end of the transport case 7, and front rotation. A plurality of transport chains 14 wound around the body 11 and the rear rotating body 12 are provided. Further, as shown in FIG. 5, the plurality of transport chains 14 are provided with transport members 15.

As shown in FIGS. 4 and 5, the transport case 7 includes a bottom wall 7a, a right side wall 7b, a left side wall 7c, and a top plate 7d, and is formed in a substantially square tube shape. An introduction port 19 is formed at the front end portion of the transport case 7, and the introduction port 19 and the delivery port 18 of the harvesting section 5 are configured to communicate with each other. A delivery port 20 is formed at the rear end of the transport case 7, and is configured so that the delivery port 20 and the culm loading portion of the threshing device 3 communicate with each other.

As shown in FIG. 7, a rectangular first opening 21 is formed in the top plate 7d of the transport case 7. A dust discharging device 8 that sucks and discharges dust D is placed and supported on a portion of the top plate 7d that faces the first opening 21.

[About the configuration of the dust exhaust device]
As shown in FIGS. 5 and 7, the dust discharging device 8 is provided with a rotating fan 44 for sucking the dust D and a housing 30 for accommodating the rotating fan 44. The housing 30 is placed and supported on the top plate 7d of the transport case 7, and the top plate 7d and the housing 30 are connected by bolts. As shown by the arrow in FIG. 5, the dust D sucked into the dust discharging device 8 by the rotation of the rotating fan 44 is directed from the right side to the left side of the machine body in the left-right direction of the rotating fan 44 (hereinafter, “dust flow”). It flows in the direction (referred to as "direction"). The housing 30 has a discharge unit 31 that discharges the sucked dust D.

[About housing configuration]
As shown in FIG. 5, the housing 30 is composed of a suction side case 30R and a discharge side case 30L. The suction side case 30R and the discharge side case 30L are formed of a metal plate, and are connected by bolts via a frame member 39. The connecting portion 33 between the suction side case 30R and the discharge side case 30L is located slightly laterally outward from the outer surface of the left side wall 7c of the transport case 7. A rotary fan 44 is arranged at a position corresponding to the connecting portion 33 in the housing 30. The suction side case 30R is provided on the upstream side in the dust flow direction with respect to the rotary fan 44, and the discharge side case 30L is provided on the downstream side in the dust flow direction with respect to the rotary fan 44.

As shown in FIGS. 5 and 6, the suction side case 30R and the discharge side case 30L have a front wall portion 30a, a rear wall portion 30b, and an upper wall portion 30c. The front wall portion 30a is composed of the front wall portion 30a of the suction side case 30R and the front wall portion 30a of the discharge side case 30L, and the rear wall portion 30b is the rear wall portion 30b of the suction side case 30R and the discharge side case 30L. It is composed of a rear wall portion 30b, and the upper wall portion 30c is composed of an upper wall portion 30c of the suction side case 30R and an upper wall portion 30c of the discharge side case 30L. The suction side case 30R has a right side wall portion 30e and an inclined surface portion 30g provided over the right end edge of the upper wall portion 30c and the upper end edge of the right side wall portion 30e. The discharge side case 30L has a left side wall portion 30d and an inclined surface portion 30f provided over the left end edge of the upper wall portion 30c and the upper end edge of the left side wall portion 30d. The inclined surface portion 30f is configured to have a lower inclined shape toward the left side wall portion 30d side, and the inclined surface portion 30g is configured to have a lower inclined shape toward the right side wall portion 30e side.

As shown in FIG. 6, in the present embodiment, the dust suction port 34 is formed on the front wall portion 30a of the suction side case 30R. As a result, as shown in FIG. 4, the dust suction port 34 opens to the outside of the housing 30, and the dust exhaust device 8 does not go through the transport case 7, but from the dust suction port 34 to the dust D around the harvesting portion 5. Is directly sucked.

The dust suction port 34 has an upper edge portion 34a and a lower edge portion 34b extending linearly in the left-right direction of the machine body, and the lower edge portion 34b is formed to be longer than the upper edge portion 34a. Further, the dust suction port 34 extends over the left and right side edge portions 34c extending upward from the left and right end portions of the lower edge portion 34b, the upper ends of the left and right side edge portions 34c, and the left and right end portions of the upper edge portion 34a. It has left and right inclined edge portions 34d provided respectively. The left and right inclined edge portions 34d are each configured to have an inclined shape lower toward the side edge portion 34c side.

As shown in FIGS. 3 and 6, a portion of the front wall portion 30a corresponding to the dust suction port 34 is provided with an eaves portion 35 extending to a portion of the harvesting portion 5 corresponding to the rear end portion. ing. The eaves portion 35 is connected to the front wall portion 30a by bolts. The eaves portion 35 has an upper surface portion 35a, a lower surface portion 35b, and left and right side surface portions 35c that cover between the upper surface portion 35a and the lower surface portion 35b.

The upper surface portion 35a is composed of a plate-shaped member extending forward from the upper edge portion 34a of the dust suction port 34, and the lower surface portion 35b is composed of a plate-shaped member extending forward from the lower edge portion 34b of the dust suction port 34. As shown in FIG. 7, the upper surface portion 35a and the lower surface portion 35b are formed in a trapezoidal shape in which the front end edge is wider than the rear end edge. The width of the trailing edge of the upper surface portion 35a and the width of the trailing edge of the lower surface portion 35b are formed to be substantially the same as the width of the upper edge portion 34a and the width of the lower edge portion 34b of the dust suction port 34, respectively. The front end edge of the upper surface portion 35a is located in front of the front end edge of the lower surface portion 35b, and the width of the front end edge of the upper surface portion 35a is wider than the width of the front end edge of the lower surface portion 35b.

As shown in FIG. 6, each of the left and right side surface portions 35c is made of a plate-shaped member, and has a bent portion 35d that is bent in a direction in which the left and right side surface portions 35c are opposed to each other. The bent portions 35d of the left and right side surface portions 35c are each formed so as to extend from a position corresponding to the upper end portion of the side edge portion 34c of the dust suction port 34 toward the front end edge of the upper surface portion 35a. The rear end edge of the side surface portion 35c is in contact with the front wall portion 30a of the suction side case 30R, and the portion of the rear end edge of the side surface portion 35c below the bent portion 35d is the side edge portion of the dust suction port 34. It is configured to be along the 34c, and the portion of the rear end edge of the side surface portion 35c above the bent portion 35d is configured to be along the inclined edge portion 34d of the dust suction port 34.

By providing the eaves 35 in the portion corresponding to the dust suction port 34, the direction of the air flow when sucking the dust D is regulated, and the flow of the air flow is directed in a certain direction. Therefore, the air flow for suction is not dissipated, and the dust D around the harvesting portion 5 can be efficiently sucked.

The second opening 36 is formed at the bottom of the suction side case 30R, that is, at a portion of the suction side case 30R facing the first opening 21 formed in the transport case 7. The first opening 21 and the second opening 36 are configured to communicate with each other, and the dust D around the harvesting portion 5 is configured to be sucked into the dust discharging device 8 through the first opening 21 and the second opening 36. ing. With this configuration, as shown in FIG. 4, the dust discharging device 8 can suck the dust D scattered around the harvesting portion 5 through the transport case 7.

[About the configuration of the discharge section]
As shown in FIG. 5, the first lower edge portion 30h located on the discharge side case 30L substantially on the same surface as the upper surface of the top plate 7d of the transport case 7 and the first lower edge portion 30h are located below the first lower edge portion 30h. A second lower edge portion 30i is formed. An inclined edge portion 30j extending over the first lower edge portion 30h and the second lower edge portion 30i is formed on the front wall portion 30a and the rear wall portion 30b in the discharge side case 30L. The first lower edge portion 30h is formed in a portion of the lower edge portion of the discharge side case 30L that is closer to the connecting portion 33 than the inclined edge portion 30j.

A plate-shaped member 37 is attached to the discharge side case 30L so as to extend over the front wall portion 30a and the rear wall portion 30b. The plate-shaped member 37 has an inclined surface portion 37a that is inclined so as to be located upward toward the first lower edge portion 30h side so as to correspond to the inclined edge portion 30j formed on the front wall portion 30a and the rear wall portion 30b. It has a horizontal surface portion 37b extending along the first lower edge portion 30h. The horizontal surface portion 37b is configured to be located below the connecting portion 33.

The discharge portion 31 is formed at the lower edge portion of the discharge side case 30L so as to be surrounded by the front wall portion 30a, the rear wall portion 30b, the right side wall portion 30e, and the inclined surface portion 37a of the plate-shaped member 37. The discharge unit 31 is located on the left side of the machine body in the left-right direction with respect to the transport case 7, whereas the operation unit 1 is located on the right side of the transport case 7, and the discharge unit 31 is separated from the operation unit 1. It is configured to discharge to the side. A space is formed between the inclined surface portion 37a and the left side wall 7c of the transport case 7, and a harness or the like can be arranged in this space.

[About the configuration of the rotating fan and drive shaft of the dust exhaust device]
As shown in FIG. 5, the suction side case 30R is provided with a drive shaft 40 passing above the transport case 7 in a state along the left-right direction (horizontal direction) of the machine body and a tubular drive shaft cover 41 covering the drive shaft 40. ing. The drive shaft 40 is rotatably supported by the drive shaft cover 41 via a bearing 42. A rotary fan 44 is attached to the left end of the drive shaft 40, and a transmitted pulley 43 is attached to the right end of the drive shaft 40.

The drive shaft cover 41 has a first support portion 41a at the left end portion of the drive shaft cover 41 and a second support portion 41b at a portion on the right side of the center in the left-right direction of the machine body. In the left side portion inside the suction side case 30R, a frame 38 is erected near the center of the height of the suction side case 30R over the front wall portion 30a and the rear wall portion 30b. The first support portion 41a and the frame 38, and the left side wall portion 30d and the second support portion 41b are connected by bolts, respectively, and the drive shaft cover 41 is supported by the suction side case 30R.

[About the configuration of the transmission mechanism]
In the present embodiment, the transport case 7 has a transmission mechanism 50 on the right side of the transport case 7 in the left-right direction of the machine body, which transmits the power of the engine E transmitted to the output sprocket 51 to the dust discharge device 8 and the harvesting section 5. It is equipped. The transmission mechanism 50 is arranged on the right side of the transport case 7 along the transport case 7.

As shown in FIG. 3, a sideways upper rotating shaft 22 is erected at a rear portion of the transport case 7. An input pulley (not shown) through which power from the engine E is transmitted via a transmission belt (not shown) is provided at a shaft end on the left side of the upper rotating shaft 22. Further, the output sprocket 51 is provided at the shaft end on the right side of the upper rotating shaft 22, and is arranged on the lateral outer side of the right side wall 7b of the transport case 7.

The transmission mechanism 50 transmits the power transmitted from the engine E to the output sprocket 51 to the rotating member 55 rotatably supported via the transmission endless rotating chain 53. The rotating member 55 to which the power is transmitted is rotationally driven and transmits the power to the transmitted pulley 43 attached to the drive shaft 40 via the dust exhaust power transmission belt 59. As a result, the rotary fan 44 attached to the drive shaft 40 is rotationally driven.

The transmission mechanism 50 includes a lower rotation shaft 52a provided so as to project laterally toward the transport case 7. A driven sprocket 52 is rotatably supported on the lower rotation shaft 52a. The transmission endless rotating chain 53 is wound around the output sprocket 51 and the driven sprocket 52.

The rotating member 55 is rotatably supported by a relay shaft 54 provided so as to project laterally of the transport case 7. The relay shaft 54 is provided between the upper side rotating shaft 22 and the lower side rotating shaft 52a in the right side portion of the transport case 7.

As shown in FIG. 9, the rotating member 55 is provided with a tubular base 56 supported by a relay shaft 54. The base 56 is rotatably supported by the relay shaft 54. At the base 56, a first rotating body 57 that outputs power to the dust discharging device 8 and a second rotating body 58 that receives power from the engine E via a transmission endless rotating chain 53 are formed on the relay shaft 54. It is supported so that it can rotate integrally side by side in the axis direction. The base 56 is rotatably supported by the relay shaft 54 via two outer bearings 56a and an inner bearing 56b. The first rotating body 57 is supported by the lateral outer end of the base 56, and the second rotating body 58 is supported by a portion of the base 56 on the transport case 7 side of the first rotating body 57. The outer bearing 56a is arranged at a position corresponding to the first rotating body 57, and the inner bearing 56b is arranged closer to the transport case 7 than the outer bearing 56a. That is, the inner bearing 56b is arranged on the opposite side of the first rotating body 57 with respect to the outer bearing 56a. With this configuration, the inner bearing 56b suppresses the movement (blur) of the first rotating body 57 with the outer bearing 56a as a fulcrum, so that the first rotating body 57 arranged at the lateral outer end of the base 56 is formed. It can be held stably and rotatable.

As shown in FIG. 3, the dust exhaust power transmission belt 59 is wound around the first rotating body 57 and the transmitted pulley 43. The second rotating body 58 is composed of a sprocket, and the meshing claws provided on the outer peripheral portion mesh with the transmission endless rotating chain 53, and the second rotating body 58 is rotationally driven as the transmission endless rotating chain 53 rotates. The first rotating body 57 rotates integrally with the second rotating body 58, and transmits power to the transmitted pulley 43 via the transmission endless rotating chain 53. The drive shaft 40 and the rotary fan 44 rotate integrally with the transmitted pulley 43, and the rotary fan 44 is rotationally driven.

Further, the power transmitted from the engine E transmitted from the output sprocket 51 is transmitted to the driven sprocket 52 by the transmission endless rotating chain 53, and rotationally drives the lower rotating shaft 52a. By connecting the drive mechanism provided in the harvesting unit 5 and the lower rotating shaft 52a, the power transmitted from the engine E transmitted by the transmission mechanism 50 is branched, and the power can be transmitted to the harvesting unit 5.

A tension mechanism 60 for tensioning the dust exhaust power transmission belt 59 is provided between the first rotating body 57 and the transmitted pulley 43. A part of the rotating member 55, the relay shaft 54, the power transmission belt 59 for dust removal, the tension mechanism 60, and the transmitted pulley 43 are trapezoidal covers 61 whose lower edge is longer than the upper edge in side view. It is covered with. The bottom of the cover 61 is open, and a part of the rotating member 55 is exposed from the bottom of the cover 61.

Further, although not shown, the transmission mechanism 50 is provided with a clutch mechanism 62 for turning on / off the power transmission. Based on the on / off state of the clutch mechanism 62, the power transmission state of the dust discharging device 8 and the power transmission state of the harvesting unit 5 are switched in synchronization. That is, when the clutch mechanism 62 is in the engaged state, power is transmitted from the engine E to the dust discharging device 8 and the harvesting unit 5 via the transmission mechanism 50. When the clutch mechanism 62 is in the disengaged state, the power from the engine E is not transmitted to the dust discharging device 8 and the harvesting unit 5.

The dust exhaust device 8 is configured to be removable. The housing 30 can be removed from the top plate 7d by removing the bolt connecting the top plate 7d of the transport case 7 and the housing 30. After removing the dust removing device 8, the first opening 21 provided in the top plate 7d of the transport case 7 is closed with an opening / closing lid. The first opening 21 can be used as an inspection opening.

As shown in FIG. 8, in the right side wall portion 30e of the housing 30, the opening 30k is rotated 45 degrees clockwise in the right side view at a position corresponding to the height at which the frame 38 is installed. It is formed in a substantially rhombic shape, and the first support portion 41a of the drive shaft cover 41 is formed in a shape corresponding to the opening 30k. That is, the opening 30k is formed to have the minimum size necessary for passing the first support portion 41a. As a result, the size of the second support portion 41b can be reduced, and the weight increase and cost increase due to the enormous growth of the members constituting the second support portion 41b can be suppressed. When attaching the drive shaft cover 41 to the suction side case 30R, the first support portion 41a of the drive shaft cover 41 is inserted into the suction side case 30R through the opening 30k, and the drive shaft cover 41 is counterclockwise when viewed from the right side. After rotating 45 degrees, the first support portion 41a may be brought into contact with the frame 38 and tightened and fixed with bolts. Conversely, when removing the suction side case 30R from the drive shaft cover 41, the mounting step The reverse process of the above may be performed. Therefore, the work of attaching and removing the drive shaft cover 41 can be easily performed.

[Another Embodiment]
Hereinafter, another embodiment in which the above embodiment is modified will be illustrated. The following alternative embodiments may be applied to the above embodiments in combination as long as there is no contradiction. The scope of the present invention is not limited to the contents of each embodiment.

(1) In the above embodiment, the case where the discharge unit 31 is arranged on the left side of the housing 30 in the left-right direction of the machine with respect to the transport case 7 has been described as an example, but the present invention is limited to the above embodiment. It is not something that can be done. The discharge unit 31 may be provided on the side away from the operation unit 1. For example, the left wall portion 30d of the housing 30 is provided with the dust suction port 34, and the front wall portion 30a is provided with the discharge portion 31. May be adopted.

(2) In the above embodiment, the case where the dust suction port 34 is formed on the front wall portion 30a of the housing 30 has been described as an example, but the present invention is not limited to the above embodiment. A configuration may be adopted in which the dust suction port 34 is formed on the rear wall portion 30b, the upper wall portion 30c, the left side wall portion 30d, the right side wall portion 30e, the inclined surface portion 30f or the inclined surface portion 30g of the housing 30.

(3) In the above embodiment, the case where the housing 30 is composed of the suction side case 30R formed of a metal plate and the discharge side case 30L has been described as an example, but the present invention has been described in the above embodiment. It is not limited to. For example, the housing 30 may adopt a configuration in which the housing 30 is integrally formed. Moreover, you may adopt the structure made of resin or the like instead of the metal plate.

(4) In the above embodiment, the case where the dust exhaust device 8 is placed and supported on the top plate 7d of the transport case 7 has been described as an example, but the present invention is not limited to the above embodiment. For example, a configuration may be provided in which a gap is provided between the top plate 7d and the housing 30.

(5) In the above embodiment, the case where the dust exhaust device 8 is supported by the top plate 7d of the transport case 7 has been described as an example, but the dust discharge device 8 is attached to the bottom wall 7a, the right side wall 7b, or the left side wall 7c of the transport case 7. A supported configuration may be adopted.

(6) In the above embodiment, the top plate 7d and the housing 30, the suction side case 30R and the discharge side case 30L, the eaves 35 and the front wall 30a, the first support 41a and the frame 38, and the left wall 30d. The case where the second support portions 41b are connected by bolts has been described as an example, but the present invention is not limited to the above embodiment. For example, a configuration in which they are connected by welding may be adopted.

(7) In the above embodiment, the case where the housing 30 has a plurality of flat wall portions has been described as an example, but the present invention is not limited to the above embodiment. For example, as the shape of the housing 30, a configuration formed in a dome shape having no corners or flat surfaces may be adopted.

(8) In the above embodiment, the case where the eaves portion 35 has an upper surface portion 35a, a lower surface portion 35b, and side surface portions 35c on the left and right sides has been described as an example, but the present invention is limited to the above embodiment. is not it. For example, the configuration may not have the lower surface portion 35b.

(9) In the above embodiment, the case where the driving unit 1 provided with the cabin 2 is adopted has been described as an example, but the driving unit 1 not provided with the cabin 2 may be adopted.

(10) In the above-described embodiment, a crawler-type full-culm-loaded combine has been described as an example, but the present invention is not limited to the above-described embodiment. For example, a wheel-type all-culm-loading combine may be adopted instead of the crawler type.

The present invention can be applied to various harvesters such as a head-feeding combine, a self-removing combine, and a corn harvester.

1: Operation unit 5: Harvesting unit 6: Transport device 7: Transport case 7d: Top plate 8: Dust removal device 9: Transport mechanism 21: First opening 30: Housing 30a: Front wall section 31: Discharge section 34: Dust suction port 34a: Upper edge 34b: Lower edge 35: Eaves 35a: Upper surface 35b: Lower surface 35c: Side surface 36: Second opening 44: Rotating fan D: Dust

Claims (7)

A harvesting section installed at the front of the aircraft to harvest crops in the field,
A transport device having a transport mechanism and a transport case for accommodating the transport mechanism, which is connected to the rear part of the harvesting section and transports the harvested product harvested in the harvesting section toward the rear of the machine body.
An operating unit arranged side by side with the transport device behind the harvesting unit,
A dust discharging device having a rotating fan and a housing for accommodating the rotating fan, supported by the transport case, sucking dust around the harvesting portion by rotation of the rotating fan, and discharging it to a side away from the operating portion. , Is provided,
A harvester in which a dust suction port that opens to the outside of the housing is formed in the housing, and dust around the harvesting portion is directly sucked from the dust suction port. The housing is placed and supported on the top plate of the transport case.
The harvester according to claim 1, wherein the dust suction port is formed on a front wall portion of the housing. The harvester according to claim 2, wherein a wall portion of the housing different from the front wall portion is provided with a discharge portion for discharging sucked dust. A portion of the housing corresponding to the dust suction port is provided with an eaves portion that covers the dust suction port from above.
The eaves include an upper surface portion extending forward from the upper edge portion of the dust suction port, a lower surface portion extending forward from the lower edge portion of the dust suction port, and the upper surface portion and the lower surface portion. It is equipped with left and right side parts that are provided,
The front end edge of the upper surface portion is located in front of the front end edge of the lower surface portion, and the width of the front end edge of the upper surface portion is wider than the width of the front end edge of the lower surface portion. The harvester according to any one of items 1 to 3. The harvester according to claim 4, wherein the eaves portion is extended forward to a position corresponding to a rear end portion of the harvesting portion. A first opening is formed in a portion of the transport case facing the dust collecting device, a second opening is formed in a portion of the housing facing the first opening, and the first opening and the second opening are formed. Is configured to communicate with
The harvester according to any one of claims 1 to 5, wherein the dust around the harvesting portion is sucked into the dust discharging device through the first opening and the second opening. The harvester according to any one of claims 1 to 6, wherein the dust collecting device is configured to discharge dust sucked to a side away from the operating unit.

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