WO2019021568A1 - Combine - Google Patents

Abstract

The present invention comprises: a conveyance device 26 that supplies grain reaped by a reaping device to a threshing device; and a dust-removing device 7 that ejects dust within the conveyance device 26 to the outside. The dust-removing device 7 has: a dust-suction fan 71 that suctions up dust from a dust-suction port formed in the conveyance device 26; a duct 72 that has a hood 721 covering the dust-suction fan 71, and that forms an ejection passage for the dust suctioned up by the dust-suction fan 71; and a guidance member 73 that is provided between the dust-suction fan 71 and the hood 721, and guides dust towards the ejection port of the duct 72.

Description

Combine

BACKGROUND OF THE INVENTION Field of the Invention The present invention relates to a combine, and more particularly to a combine dust remover.

For example, as described in Patent Document 1, there is known a combine in which a dust removing device is provided in a transfer device for supplying a grain remnant that has been cut by a reaper to a threshing device. The dust removal apparatus includes a dust suction fan for sucking up the dust in the transfer device, and a duct that constitutes a discharge path of the dust sucked up by the dust collection fan. By providing the dust removal device in the transfer device, it is possible to prevent the dust generated in the cutting off from scattering around the operation unit.

However, in the conventional dust removal apparatus, dust may stay in the duct, and the discharge efficiency of the dust is not sufficient, and it has been found that there is room for further improvement. Also, if dust remains in the vicinity of the dust suction fan, there is a risk that a part of the grain cake sucked up with the dust may wind around the dust suction fan, so from the viewpoint of removing the cause of failure, dust in the duct A method to prevent the retention of water is desired.

Japanese Utility Model Application Publication No. 6-15430

This invention is made in view of the said situation, The objective is to provide the combine which can prevent the retention of the dust in a duct and can improve discharge efficiency.

A combine according to the present invention comprises a transport device for supplying cereal grains harvested by a reaper to a threshing device, and a dust removal device for discharging dust in the transport device to the outside, wherein the dust removal device is the transport device Between the dust suction fan and the hood, a dust suction fan for sucking dust from the dust suction port formed in the duct, a hood having a hood covering the dust suction fan and constituting a discharge path of dust sucked by the dust suction fan; And a guide member provided to guide dust toward the outlet of the duct. By guiding the dust in the duct toward the discharge port using the guide member, the retention of the dust in the duct can be prevented and the discharge efficiency can be improved.

The guide member is provided to divide a space between the dust suction fan and the hood into a first space relatively close to the discharge port and a second space relatively far from the discharge port. It is preferable that an opening of the dust suction fan faces the first space. In the second space relatively far from the exhaust port of the duct, the air tends to stagnate and the dust tends to stay, but by separating with the guide member in this way, the dust sucked up by the dust collecting fan is Since the air is sent to the exhaust port of the duct without passing through the second space, the retention of dust in the duct can be prevented, and the exhaust efficiency can be improved.

Preferably, the guide member is provided along the opening. This can effectively prevent the accumulation of dust in the vicinity of the dust suction fan. As a result, it is possible to suppress the occurrence of a failure due to a part of the grain cake sucked with the dust being wound around the dust suction fan.

It is preferable that the dust suction fan is fixed to the hood, and the guide member is fixed to the hood or the dust suction fan. According to this configuration, since the dust suction fan and the guide member can be handled integrally with the hood, the work of attaching the dust removal device to the transport device is simplified.

The dust removal apparatus includes a mesh member disposed between the dust suction port and the dust collection fan, and a support member attached to the conveyance device, and the hood and the mesh member are supported by the support member. Is preferred. According to this configuration, since the hood and the mesh member can be handled integrally via the support member, the work of attaching the dust removal device to the transport device is simplified.

The duct includes the hood disposed on the upper surface of the transport device, and a vertical cover disposed on the side surface of the transport device and having the discharge port at the lower end portion, the vertical cover being the support member Preferably supported by According to this configuration, since the hood and the vertical cover can be handled integrally via the support member, the work of attaching the dust removal device to the transport device is further simplified.

Left side view of combine Right side view of combine Top view of combine Figure showing threshing device and sorting device Longitudinal sectional view of dust removal device Top view of dust removal device Perspective view of dust removal device Exploded view of dust removal device

An example of the combine according to the present invention will be described. First, the overall structure of the combine will be briefly described. Next, the mowing device, the threshing device, and the sorting device installed in the combine will be described, and then the dust removing device will be described.

[Overall structure of combine]
1 to 3 respectively show the left side surface, the right side surface, and the plane of the combine 100 according to the present embodiment. In the drawing, the longitudinal direction, the lateral direction, and the vertical direction of the combine 100 are indicated by arrows.

The combine 100 mainly includes a traveling device 1, a reaper 2, a threshing device 3, a sorting device 4, a storage device 5, and a power unit 6. On the left side of the threshing device 3 which is a threshing part, a side cover 33 is attached which covers the left side of the threshing cylinder 31 described later. Further, as described later, the combine 100 is provided with a grain tank 51 for storing grains, and a discharge auger 52 for discharging grains from the grain tank 51.

The traveling device 1 is provided below the chassis frame 10. The traveling device 1 includes a transmission 11 and crawler devices 12 provided on the left and right. The transmission 11 transmits the power of a diesel engine 61 described later to the crawler device 12. The crawler device 12 causes the combine 100 to travel in the front-rear direction, and turns the combine 100 in the left-right direction.

The reaper 2 is provided in front of the traveling device 1. The reaper 2 includes a reel 21, a cutter (cutting blade) 22, an auger (horizontal feed screw) 23, a feeder 24, and a rotor 25 (see FIG. 4). The reel 21 guides the grain of the field to the cutter 22 by rotating. The cutter 22 cuts the grain guided by the reels 21. The auger 23 assembles the cereal straw cut by the cutter 22 at a predetermined position. The feeder 24 has a conveying device 26 for supplying the grain culverts harvested by the reaper 2 to the threshing device 3, and a dust removing device 7 described later is attached to the conveying device 26. The transport device 26 incorporates a transport conveyor 27 that transports the cereal grains collected by the auger 23 to the rotor 25. The rotor 25 feeds the grain gravel transported by the feeder 24 to the threshing device 3.

The threshing device 3 is provided behind the reaper 2 and the transport device 26. The threshing device 3 includes a threshing cylinder 31 and a net 32 in the throttling chamber. The threshing cylinder 31 threshs the grain scale by rotating. The net 32 supports the grain carried by the threshing cylinder 31 and drops the grain removal to the sorting device 4. The grain threshed by the threshing cylinder 31 is transported rearward by a dust transfer valve (not shown) provided above the threshing cylinder 31 in the throttling chamber.

The sorting device 4 is provided below the threshing device 3. The sorting device 4 includes a rocking device 41 and a blower (carp) 42. The rocking device 41 sifts the grain to sort the grains. The grains sorted by the rocking device 41 are conveyed by the grain conveying device provided with the conveyor 143 and the grain conveying conveyor 151 first, and are introduced into the grain tank 51 through the inlet port 153. The blower 42 sorts the grains by blowing off foreign substances such as scales contained in the grain removal. Contaminants such as scale are finely cut by a cutter and discharged to the outside from an exhaust port (not shown) provided at the rear of the sorting device 4.

The storage device 5 is provided on the right side of the threshing device 3 and the sorting device 4. Therefore, the threshing device 3, the sorting device 4, and the storage device 5 are arranged in parallel on the left and right above the traveling device 1. The storage device 5 includes a gren tank 51. The grain tank 51 stores the grain that has been transported from the sorting device 4 through the conveyor 143 and the grain conveyor 151. The discharge auger 52 is used to discharge the grains in the gren tank 51. The discharge auger 52 is rotated when the grain discharging operation is performed, and the grain is discharged to any place.

The power unit 6 is provided below the operation unit 13 and in front of the storage device 5. The power unit 6 is constituted by a diesel engine 61. The diesel engine 61 converts thermal energy obtained by burning fuel into kinetic energy. More specifically, the diesel engine 61 converts the heat energy obtained by burning the fuel into motive power for driving each part such as the traveling device 1. The power unit 6 may be an electric motor that generates power by electricity. Further, the power unit 6 may include both the diesel engine 61 and the electric motor.

The driving unit 13 is provided in front of the glen tank 51 on the right front of the vehicle. A driver's seat 14 on which the operator is seated and a steering handle 15 disposed in front of the driver's seat 14 are installed in the driver 13, and various operating tools such as shift levers, clutch levers and switches are provided around them. Is arranged.

[Mowing device]
As described above, the combine 100 includes the transport device 26 that supplies the grain scraps that have been cut by the cutting device 2 to the threshing device 3. The transport device 27 incorporates a transport conveyor 27 that transports the cropped straw. The transfer conveyor 27 includes a front rotating member 271 rotatably supported at the front end of the transfer device 26, a rear rotating member 272 rotatably supported at the rear end of the transfer device 26, and left and right wound around them. And a pair of transport chains 273. The lower surface portion of the transfer device 26 is connected to the front end portion of the chassis frame 10 via a hydraulic cylinder 28, and the reaper 2 is configured to be able to move up and down by the hydraulic cylinder 28.

When the grain scraps cut off by the mowing device 2 are conveyed by the conveying device 26, if the dust generated from the cutting grain gutters flows back into the conveying device 26 and scatters around the operation unit 13, the operator's view is improved. The work environment gets worse as it is hampered. Therefore, in the present embodiment, the dust removal device 7 is provided in the transfer device 26 to prevent the scattering of dust. The dust remover 7 sucks dust from the dust suction port 261 (see FIGS. 5 and 8) formed in the transfer device 26 and discharges it to the outside. In the present embodiment, an example in which the dust suction port 261 is formed on the upper surface of the conveyance device 26 is shown, but a dust suction port may be formed on the side surface or the lower surface of the conveyance device 26.

Threshing device
As described above, the threshing device 3 includes the threshing cylinder 31 and the net 32 in the throttling chamber. As shown in FIG. 4, the throttling cylinder 31 mainly includes a center shaft (thrusting cylinder shaft) 311, a threshing drum start end (scratching screw) 312, and a tooth bar (scissor tooth support member) 313. There is. In the present embodiment, the threshing drum start end 312 is disposed at the front end of the center shaft 311, and a plurality of teeth bars 313 are disposed in parallel behind the threshing drum start end 312 with the center shaft 311 as a center.

The center shaft 311 is a linearly formed structure, and supports the threshing drum start end 312 and the tooth bar 313. The center shaft 311 supports the threshing drum start end 312 at its front end, and supports a plurality of teeth bars 313 from its center to its rear end. The center shaft 311 is rotatably supported at its front and rear ends by the front and rear walls of the processing chamber.

The threshing drum start end portion 312 is a structure in which a spiral impeller (scraping blade) 312 b is detachably formed. The threshing drum start end 312 scrapes in the grain fed by the rotor 25. That is, by rotating, the threshing drum start end portion 312 takes in the grain fed by the rotor 25 and sends it to the rear of the threshing drum start end portion 312 (that is, the threshing drum 31). The threshing drum start end portion 312 is not limited to the structure in which the spiral impeller 312 b is formed, and may have a structure in which a plurality of blades are formed.

The tooth bar 313 is a structure in which a plurality of teeth 313t are arranged in parallel with a predetermined interval. The tooth bar 313 threshes the grain which the threshing barrel start end 312 has delivered. That is, by rotating the tooth bar 313, the grain stick which the threshing barrel start end 312 has sent out is swallowed and struck to drop off the grain. A part of the cereal grains threshed by the threshing drum 31, dust, etc. flow down to the rear of the threshing drum 31 and are discharged from the rear of the threshing device 3. The tooth bar 313 is not limited to the structure having a plurality of teeth 313t, and may have a spiral blade. Further, in the present embodiment, the plurality of teeth bars 313 and the plate member 314 provided across the teeth bars 313 separate the internal space of the threshing drum 31 from the external space of the throttling barrel 31 and have a cylindrical shape as a whole. Instead of this, a cylindrical rotary body may be provided with a plurality of throttling teeth 313t. At the rear of the threshing device 3, it is possible to provide a cutter (cutting device) for cutting the grain scale.

The receiving net 32 is mainly constituted by a net body 321. In the present embodiment, the mesh body 321 is provided to cover the lower side of the rotating body constituted by the plurality of tooth bars 313. The mesh body 321 is a structure in which a plurality of wires 321w are stretched in parallel at predetermined intervals. The mesh 321 supports the grain gravel that is swallowed by the tooth bar 313. Further, the mesh 321 causes the grain removal to fall to the sorting device 4 from the gap. The left end portion and the right end portion of the net body 321 are detachably supported to the threshing device 3.

[Sorting device]
As described above, the sorting device 4 includes the swinging device 41 and the blower 42. As shown in FIG. 4, the rocking device 41 mainly includes a feed pan 411, a chaff sieve 412, and a straw rack 413. In the present embodiment, the chaff sieve 412 is disposed behind the feed pan 411, and the straw rack 413 is disposed behind the chaff sieve 412.

The feed pan 411 is a widely flat structure. The feed pan 411 receives the grain removal that has fallen from the receiving net 32. In addition, the feed pan 411 moves backward while leveling the grain removal on the feed pan 411 by swinging back and forth. At this time, the grain removal is spread evenly in the left-right direction by the fins 411f attached obliquely.

The chaff sieve 412 is a structure in which a plurality of sieve plates 412p are mounted in parallel at a predetermined interval. The spacing between the sieve plates 412p is configured to be changeable. The chaff sieve 412 filters out the grain removed from the feed pan 411. In other words, the chaff sieve 412 sifts the grain removed from the feed pan 411 by rocking back and forth. This makes it possible to lift up the contaminants mixed in the grain removal and separate them from the grains. Thus, chaff sieve 412 performs grain sorting ("fine sorting") from grain removal. Degrained after fine sorting ("most processed" containing only grains) passes through the sieve net 415 and is guided by the first-class grain plate 431 and dropped to the first weir 43 and the first conveyor 143 It is transported to the right at The grain removal remaining on the chaff sieve 412 moves backward and is sent to the straw rack 413.

The straw rack 413 is a structure in which a plurality of rack plates 413p are attached in parallel at a predetermined interval. The straw rack 413 filters the grain removed from the chaff sieve 412. In other words, the straw rack 413 sifts the grain removed from the chaff sieve 412 by rocking back and forth. This allows the separation of grains from the grain in support of the relatively large contaminants that are being mixed in with grain removal. Thus, the straw rack 413 performs grain sorting ("fine sorting") from grain removal. Degrained after fine sorting ("processed material No. 2" containing grains and a few small contaminants) is guided by the second flow grain plate 441 and dropped to the double pantyhose 44. The grain removed from the second pan 44 is conveyed to the right by the second conveyor 144, reduced and transported to the front end of the sorting device 4, and subjected to the sorting process again. Also, the grain removal remaining on the straw rack 413 moves backward and is discharged to the outside.

Thereafter, the chaff sieve 412 sifts the grain removed from the feed pan 411. As described above, after de-graining after fine sorting including only grains, after passing through the sieve net 415, it is guided by the first grain plate 431 and falls to the first fold 43. The grain removal remaining on the chaff sieve 412 moves backward and is sent to the straw rack 413.

In addition, the straw rack 413 sifts the grain removed from the chaff sieve 412. As described above, the de-grained after fine sorting, which includes grains and a small number of small contaminants, is guided by the second flow grain plate 441 and falls into the second pan 44. The grain removal remaining on the straw rack 413 moves backward and is discharged to the outside.

The blower 42 mainly includes a fan 421 and a fan case 422. In the present embodiment, the fan 421 is disposed below the feed pan 411, and the fan case 422 is disposed so as to cover the fan 421.

The fan 421 is a structure in which a plurality of fan plates 421p are attached at a predetermined angle. The fan 421 sends a wind toward the chaff sieve 412 and the straw rack 413 to blow away foreign substances. That is, the fan 421 rotates and sends out the wind to blow off the chips on the chaff sieve 412, the chips dropped from the chaff sieve 412, the chips on the straw rack 413, the chips dropped from the straw rack 413, etc. . In this way, it is possible to separate relatively small contaminants that are being mixed in with grain removal from the grain. Thus, the fan 421 performs grain sorting from grain removal. De-grained after sorting (including grains only) is guided by the first-class grain board 431 and falls to the fork 43 most. Alternatively, the post-sorting de-grained (including grains and a few small contaminants) is guided by the second flow grain plate 441 and falls into the second pan 44.

The fan case 422 is a structure formed by bending a plate material. The fan case 422 covers the fan 421 and guides the wind sent by the fan 421 in a predetermined direction. More specifically, the fan case 422 guides the wind sent by the fan 421 in a predetermined direction.

[Dust removal device]
As described above, the combine 100 includes the dust removing device 7 that discharges the dust in the transfer device 26 to the outside. As shown in FIGS. 5-8, the dust removing device 7 has a dust collecting fan 71 for sucking up dust from the dust collecting port 261 formed in the conveying device 26, and a hood 721 covering the dust collecting fan 71. And a guide member 73 provided between the dust suction fan 71 and the hood 721 and guiding the dust toward the discharge port 72e of the duct 72. For the convenience of description, in FIG. 6, the hood 721 is drawn through. Further, in FIG. 7, the portion of the hood 721 covering the dust collecting fan 71 is not shown. The dust remover 7 further includes a mesh member 74 disposed between the dust suction port 261 and the dust suction fan 71.

The dust suction fan 71 includes a casing 712 having an opening 711 circularly opening toward the hood 721, and a rotary blade 714 driven by a motor 713 disposed at the center of the casing 712. The power source for rotating the motor 713 can be taken out of the threshing device 3, for example. A power supply cord (not shown) for supplying electric power to the motor 713 is connected to the timer unit 715 and to the connector 716 in the duct 72 through the hole 721 h formed in the hood 721. The timer unit 715 prevents the clogging of the dust collecting fan 71 and the mesh member 74 by temporarily stopping the operation of the dust collecting fan 71 by turning off the motor 713 every predetermined time.

The dust suction fan 71 is fixed to the hood 721, and more specifically, is attached and fixed to the hood 721 via a pair of brackets 76. The pair of brackets 76 is attached to the inner surface of the hood 721 by fasteners 76 b such as bolts. A plurality of (four in the present embodiment) legs 712f are formed in a casing 712 of the dust suction fan 71, and each leg 712f is attached to the bracket 76 by a fixing tool 71b such as a bolt.

The duct 72 includes a hood 721 disposed on the upper surface of the conveying device 26, and a vertical cover 722 disposed on the side surface of the conveying device and having a discharge port 72e at the lower end. In FIG. 5, the direction in which the air in the duct 72 flows is conceptually represented by arrows. The duct 72 extends in an L shape as a whole by the hood 721 and the vertical cover 722, and the dust sucked up by the dust collecting fan 71 is discharged downward. The hood 721 is a horizontal discharge path forming member that forms a discharge path in the left-right direction, and the vertical cover 722 is a vertical discharge path forming member that forms a discharge path in the vertical direction. The vertical discharge passage forming member can also be constituted by a cylinder. The discharge port 72 e is disposed on the left side of the conveyance device 26 opposite to the operation unit 13.

The guide member 73 guides the dust in the duct 72 sucked up by the dust collecting fan 71 toward the discharge port 72e (in other words, toward the vertical cover 722). Thereby, the retention of the dust in the duct 72 can be prevented, and the discharge efficiency can be improved. Further, by preventing the retention of dust in the vicinity of the dust collecting fan 71, the occurrence of a failure due to the dust collecting fan 71 being partially wound around the dust can be suppressed.

The guide member 73 of the present embodiment is configured such that a space between the dust suction fan 71 and the hood 721 is a first space 81 relatively close to the discharge port 72e and a second space 82 relatively far from the discharge port 72e. , And the opening 711 of the dust suction fan 71 faces the first space 81. Preferably, the opening 711 does not face the second space 82, and the entire area faces the first space 81. In the second space 82 located on the right side of the opening 711 (the side far from the discharge port 72e), air tends to easily stagnate and dust tends to stay. The dust in the duct 72 is sent to the outlet 72e without passing through the second space 82, and the retention of the dust can be prevented.

In the present embodiment, since the guide member 73 is provided along the opening 711 of the dust suction fan 71, the dust can be effectively prevented from staying in the vicinity of the dust suction fan 71. As a result, the occurrence of a failure due to the dust collecting fan 71 partially being wound up with the dust is effectively suppressed. As shown in FIGS. 6 and 7, the guide member 73 is formed of a curved plate material. The guide member 73 is provided with a hole 73 h for passing the leg portion 712 f of the casing 712. The guide member 73 is provided from the front inner surface to the rear inner surface of the hood 721 and is curved along the opening 711. The inner surface of the hood 721 is inclined above the dust suction fan 71, and the upper edge of the guide member 73 is also inclined along it. The guide member 73 is preferably in close contact with the inner surface of the hood 721 along the longitudinal direction, but a small gap may be formed.

The guide member 73 is fixed to the hood 721 (see FIG. 8). In the present embodiment, spot welding is performed at three locations on both ends and the center of the guide member 73 in the front-rear direction, and is joined to the inner surface of the hood 721. At the central portion of the guide member 73, spot welding is performed with a bent plate member 731 interposed in order to secure a contact region with the inner surface of the hood 721 positioned above. The guide member 73 may be fixed to the dust suction fan 71. Moreover, it is also possible to fix the guide member 73 using not only spot welding but other fixing means such as screws.

As shown in FIG. 5, the hood 721 is formed above the dust suction fan 71 and includes an inclined surface 723 inclined upward (in other words, toward the vertical cover 722) toward the outlet 72e. . The inclined surface 723 preferably covers most of the opening 711 of the dust suction fan 71, and more preferably covers the entire area of the opening 711. As a result, the air blown up by the dust suction fan 71 is smoothly fed toward the discharge port 72e in combination with the action of the guide member 73, which is effective in preventing the retention of dust. In addition, the hood 721 includes an inclined surface 724 inclined upward toward the dust suction fan 71. The air blown up by the dust suction fan 71 and sent to the left side hits the inclined surface 724 and is sent downward. The inclined surface 724 preferably extends upward from a position below the upper edge of the opening 711. Thus, the air flow striking the inclined surface 724 can be smoothly changed, which is effective in preventing dust retention.

The mesh member 74 is disposed to cover the dust suction port 261. The mesh member 74 protects the dust collecting fan 71 by preventing a part of the cropped grain scale from invading the duct 72 with dust. In the present embodiment, an example in which the mesh member 74 is a punched metal mesh formed of a punching metal plate is shown. The punched metal mesh has smaller irregularities as compared with the crimped mesh, and a part of the cut grain can not be caught easily, so that it is possible to suppress a decrease in dust collecting ability.

As shown in FIG. 8, the dust removing device 7 includes a support member 75 attached to the transfer device 26, and the hood 721 and the net member 74 are supported by the support member 75. Thereby, the hood 721 and the mesh member 74 can be handled integrally via the support member 75, and the work of attaching the dust removing device 7 to the transport device 26 is simplified. As shown in FIG. 8, the support member 75 includes a frame-shaped portion 751 disposed so as to surround the dust suction port 261, a plate-shaped portion 752 provided in the front portion of the frame-shaped portion 751, and a frame-shaped portion 751. It has a plate-like portion 753 provided in the rear portion, and an arm portion 754 extending to the side of the frame-like portion 751 (to the left in this embodiment).

The support member 75 is attached to the transfer device 26 via the fixture 75 b. In the present embodiment, a bolt as the fixing tool 75b is inserted into the hole 74h formed in the mesh member 74 and the holes 75h formed in each of the plate-like portions 752 and 753 of the support member 75. It is inserted into a hole 26 h formed in the device 26 and fastened with a nut (not shown) inside the transfer device 26. The mesh member 74 is disposed inside the frame-like portion 751 and placed on the pair of plate-like portions 752 and 753. As described above, the mesh member 74 is fixed to the support member 75 by the bolt as the fixture 75 b.

A hinge 725 connected to the frame 751 is provided in front of the hood 721, and a bracket 726 provided with a bolt 726b fixed to the plate 753 is provided behind the hood 721. . When maintaining the dust suction fan 71, the mesh member 74, etc., by removing the bolt 726b of the bracket 726, the hood 721 is pivoted with the dust exhaust fan 71 about the hinge 725 to support the rear of the hood 721. It can be opened. A sealing material 727 formed of an elastic material such as a sponge is attached to the lower peripheral edge of the hood 721. The sealing material 727 closes the gap between the hood 721 and the support member 75 and the gap between the hood 721 and the vertical cover 722 to enhance the sealing performance of the duct 72.

The vertical cover 722 is supported by the support member 75. In the present embodiment, the hooks 722f formed on the upper edge of the vertical cover 722 are hooked on the arms 754 of the support member 75, and they are fixed by fasteners 722v such as screws. The fixing tool 722 v is inserted into the hole 722 h formed in the hook-like portion 722 f and is inserted into the hole 754 h formed in the arm portion 754. As described above, since the hood 721 and the vertical cover 722 are supported by the support member 75, the duct 72 configured by them can be handled integrally.

In the present embodiment, as described above, the hood 721, the vertical cover 722, and the mesh member 74 are supported by the support member 75, the dust suction fan 71 is fixed to the hood 721, and the guide member 73 is the hood 721. Since it is fixed to (or dust suction fan 71), it is possible to assemble these in advance and unitize. As a result, the unit can be easily attached to the transport device 26. Specifically, after the unitized dust removal device 7 is placed on the upper portion of the transfer device 26, the hood 721 is opened, and then the mesh member 74, the support member 75, and the transfer device 26 are fastened by the fixing tool 75b. Thus, the unitized dust removal device 7 can be mounted on the transfer device 26. When the dust remover 7 is an optional item, a user or the like may attach the dust remover 7 to an existing combine, so it is extremely convenient to be able to do simple work.

Although the example of a common type combine was shown in this embodiment, it is not restricted to this, The present invention may be a self removal type combine.

The present invention is not limited to the embodiment described above, and various improvements and modifications can be made without departing from the spirit of the present invention.

DESCRIPTION OF SYMBOLS 2 Reaping device 3 Threshing device 7 Dust removing device 24 Feeder 26 Transport device 71 Dust collecting fan 72 Duct 72 e Discharge port 73 Guide member 74 Mesh member 75 Support member 81 First space 82 Second space 100 Combine 261 Dust suction port 711 Opening 721 Hood 722 vertical cover

Claims (6)

A transport device for supplying the threshing device with the grain remnants harvested by the reaper;
And a dust removing device for discharging the dust in the transfer device to the outside,
The dust removing device is
A dust suction fan which sucks in dust from a dust suction port formed in the conveying device;
A duct which has a hood covering the dust suction fan and which constitutes a discharge path of dust sucked up by the dust suction fan;
And a guide member provided between the dust suction fan and the hood for guiding dust toward the outlet of the duct. The guide member is provided to divide a space between the dust suction fan and the hood into a first space relatively close to the discharge port and a second space relatively far from the discharge port. 2. The combine according to claim 1, wherein the opening of the dust suction fan faces the first space. The combine according to claim 1 or 2, wherein the guide member is provided along the opening. The combine according to any one of claims 1 to 3, wherein the dust suction fan is fixed to the hood, and the guide member is fixed to the hood or the dust suction fan. The dust removing device is
A mesh member disposed between the dust suction port and the dust suction fan;
And a support member attached to the transfer device.
The combine according to any one of claims 1 to 4, wherein the hood and the mesh member are respectively supported by the support member. The duct includes the hood disposed on the upper surface of the transport device, and a vertical cover disposed on the side surface of the transport device and having the discharge port at the lower end portion.
The combine according to claim 5, wherein the vertical cover is supported by the support member.

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