JP5325165B2 - Dust-proof structure of self-detaching combine - Google Patents

Description

  The present invention is provided with a reaping device having a reaping device for reaping planted culm and a culm transporting device for transporting the culm harvested by the reaping device to a threshing device, and the lateral side of the front portion of the traveling machine body A boarding operation part is provided at a location partitioned by the reaping part and a partition wall, and a driving part is provided below the boarding operation part, and the grain is disposed at a front part of the threshing device. The partition wall and the cutting part are provided with an inlet plate that receives the tip side of the harvested cereal rice cake that is delivered from the straw transporting device and transported while being held by the stock chain by the feed chain, and flows down to the handling room It is related with the dustproof structure of the self-decomposing type | mold combine provided with the dustproof cover which plugs up the clearance gap formed between.

  The dust cover is configured to close the gap so that straw scraps or the like do not enter the prime mover from the gap between the partition wall and the cutting part and adversely affect the prime mover. However, conventionally, the dust cover is configured by a flexible resin sheet that is attached to the partition wall in a fixed state and is formed in a rectangular shape in plan view extending toward the cutting portion side. The dustproof cover having flexibility is configured to be received in a state where it is placed on the inlet plate of the threshing apparatus (see Patent Document 1).

JP 2008-193908 A

  In the above conventional configuration, since the dustproof cover is composed of a flexible resin sheet, the dustproof cover is easily deformed at the time of cutting work or maintenance work of the cutting part. Sometimes it was off. Thus, when the cutting operation is performed with the threshing device detached from the inlet plate, a gap is formed between the cutting unit and the partition wall, and the straw scraps enter the machine body such as the driving unit from the clearance. There is a fear.

  More specifically, the dustproof cover as described above is formed between the cutting portion and the gap formed between the partition wall and the cutting portion, in other words, between the portion where the riding operation portion and the driving portion are provided and the cutting portion. The place where this dustproof cover is provided is located on the center side in the lateral direction of the aircraft, making it difficult for the operator located on the lateral outer side of the traveling aircraft to see and threshing. There is a possibility that the cutting operation may be performed without the operator being able to recognize that the device remains detached from the inlet plate of the apparatus.

  Further, in the above conventional configuration, the dust-proof cover made of a flexible resin sheet is formed in a rectangular shape in plan view, and one end portion is fixedly attached to the partition wall, and the cutting portion side The other end is placed on the inlet plate, and the part of the dustproof cover on the front side of the machine body is open. From this point of view, the dustproof function cannot be said to be sufficient.

  An object of the present invention is to provide a dustproof structure for a self-removing combine that can sufficiently exhibit a dustproof function.

  A dustproof structure for a self-decomposing combine according to the present invention includes a reaping unit having a reaping device for reaping the planted culm and a culm conveying device for transporting the culm harvested by the reaping device to the threshing device, and traveling. A boarding operation part is provided at a position on one side of the front part of the airframe in a state of being partitioned by the cutting part and a partition wall, and a driving part is provided below the boarding operation part, and the threshing device The front plate is provided with an inlet plate that receives the tip side of the harvested cereal rice cake that is delivered from the cereal conveying device and is conveyed while being held by the feed chain. A dustproof cover for closing a gap formed between the partition wall and the cutting part is provided, and the first feature of the dustproof cover is that the dustproof cover extends from the partition wall to the cutting part side. Projecting toward the gap A ceiling wall part covering the upper part, and a front side edge part which is positioned on the front side of the body among the edges on the cutting part side of the ceiling wall part and is inclined so as to move away from the partition wall toward the rear side of the body Out of the front vertical wall portion extending in a vertical posture in a state of being connected downward from the front, and the edge portion on the cutting portion side of the ceiling wall portion, on the rear side of the body from the front side edge portion Provided in a state in which each of the rear vertical wall portions, which are extended in a vertical posture in a state where they are continuous downward from the rear side edge portion positioned and whose lower end portion is connected to the inlet plate, is formed of a hard material. And a flexible sheet body that guides the tip of the harvested cereal rice cake toward the inlet plate from the conveying terminal portion of the cereal conveying device is in contact with the front vertical wall portion of the dustproof cover and the inlet At the point where it is provided so as to overlap the plate vertically .

  According to the first characteristic configuration, the dust-proof cover is configured to include a state in which each of the ceiling wall portion, the front vertical wall portion, and the rear vertical wall portion is formed of a hard material. Therefore, the shape of the dustproof cover is difficult to deform during the cutting operation or the maintenance operation of the cutting unit. Since the dustproof cover can maintain a state in which an appropriate dustproof action can be exerted, it is possible to appropriately prevent dust from entering the inside of the machine body such as the driving part.

  And since the rear side vertical wall part in a dust-proof cover is connected to an entrance plate, it can prevent that a clearance gap arises between a dust-proof cover and an entrance plate. Moreover, since the flexible sheet body which guides the tip part of the harvested grain culm toward the entrance plate from the conveyance terminal part of the cereal conveying apparatus is provided in a state in contact with the front vertical wall part in the dust proof cover, It is possible to prevent a gap from being generated between the cereal conveying device. And since a flexible sheet body overlaps with an entrance plate up and down, it can prevent generating a crevice between a grain feeder and an entrance plate.

  In other words, it is possible to prevent gaps from being generated between the dust cover and the inlet plate, between the dust cover and the cereal conveying device, and between the cereal conveying device and the inlet plate. Intrusion into the aircraft can be avoided appropriately.

  Also, in the dust cover, the front vertical wall located on the front side is provided in an oblique position so that it is farther from the partition wall toward the rear side of the machine body, so that the tip side of the harvested cereals may touch. However, the flexible sheet member can be guided smoothly along the inclined posture without hindering the conveyance, and the flexible sheet member can be It is guided so as to be adapted along the front vertical wall portion in an oblique posture, and a state in which they are in contact can be maintained in a state where no gap is generated.

  Therefore, it has been possible to provide a dustproof structure for a self-removing combine that can fully exhibit the dustproof function.

  The second characteristic configuration of the present invention is that, in addition to the first characteristic configuration, the ceiling wall portion is formed in an inclined posture that is positioned downward as it is located on the cutting portion side.

  According to the second characteristic configuration, in the dust-proof cover, the ceiling wall portion is formed in an inclined posture that is positioned downward as it is located on the cutting portion side. Even if it rides on the upper part of the roof, it is guided to move to the cutting part side along the inclined surface of the upper part of the ceiling wall part and is sent into the threshing device along with the vibration of the traveling machine body and the cutting part accompanying the cutting work It will be.

  Therefore, it is possible to more appropriately avoid dust such as straw scraps generated in the cutting part from entering the inside of the machine body such as the driving part.

  In the third feature configuration of the present invention, in addition to the first feature configuration or the second feature configuration, cooling air is sucked into the driving unit from a position opposite to the cutting unit and directed toward the cutting unit side. Ventilating means for ventilating the cooling air so as to pass through is provided, and the front vertical wall portion is a porous body provided with a small-diameter vent that allows passage of the cooling air and prevents passage of dust. It is in the point formed.

  According to the third characteristic configuration, the cooling air passes through the driving portion so that the cooling air is sucked from the portion opposite to the cutting portion and blown out toward the cutting portion by the ventilation action of the ventilation means. It will be. And since the front side vertical wall part formed with a porous body is provided in the part by the side of the cutting part of a motor part, the ventilation hole by which the cooling air ventilated by a ventilation means was formed in this front side vertical wall part It will be exhausted to the outside through.

  As a result, dust, such as straw scraps, generated from the harvested grain culm while being transported by the grain culm transport device is generated in the harvested part by cooling air exhausted to the outside through the vent hole formed in the front vertical wall part. It is possible to easily avoid the dust such as straw scraps falling on the boarding operation section.

It is a whole left view of the self-decomposing combine. It is a whole top view of a self-detaching combine. It is a whole right side view of a self-decomposing combine. It is a side view of a dustproof cover arrangement part. It is a top view of a dustproof cover arrangement part. It is a front view of a dustproof cover arrangement part. It is a perspective view of a dustproof cover arrangement part. It is a vertical front view of a drive part. It is a longitudinal front view of the principal part when a driving | operation part cover falls sideways and switches to an open state. It is a perspective view of a dustproof net. It is a top view of a driving | operation part cover when a driving | operation part cover falls down and is switched to an open state. It is a side view which shows the arrangement configuration of an exhaust pipe. It is a transmission system diagram. It is sectional drawing of a one-way clutch arrangement | positioning part. It is a top view of the front part of the self-desorption type combine of the state which switched the cutting part to the retracted state for maintenance. It is a side view of the dustproof cover arrangement part of another embodiment.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
As shown in FIGS. 1 to 3, in the self-removing combine, a cutting unit 3 is connected to a front part of a traveling machine body 2 having a pair of left and right crawler traveling devices 1 so as to be movable up and down around a horizontal axis P. The threshing device 4 and the grain tank 5 are provided in the state where the machine body 2 is arranged in the width direction of the machine body at the rear side portion of the traveling machine body 2, and the grains such as rice and wheat are harvested while traveling in the field. It is configured to thresh.

A boarding operation unit 7 is provided at a position on one side of the front part of the traveling machine body 2 in a state of being partitioned by the cutting unit 3 and the partition wall 6, and a driving unit 8 is provided below the boarding operation unit 7. Is provided.
As shown in FIG. 2, the boarding operation unit 7 includes a front panel 11 including a control lever 10 and the like in front of the driver seat 9, and includes a main transmission lever 12 and an auxiliary transmission lever 13 and the like on the left side of the driver seat 9. A partition wall 6 is provided at the end of the side panel 14 on the cutting part 3 side for partitioning between the boarding operation part 7 and the cutting part 3.

  As shown in FIG. 8, the driving unit 8 includes an engine 15, a cooling radiator 16, a cooling air generating fan 17 as a ventilation means, a dust-proof net 18 for removing dust of outside air sucked as cooling air, An oil cooler 19 that cools the hydraulic oil using cooling air is provided.

The support base 20 for supporting the driver's seat 9 is substantially U-shaped in a side view with the opening portion facing downward, and a right side wall 21 is continuously provided at a right end portion thereof, and the right side wall 21 allows outside air as cooling air. It is configured to function as an intake duct having a porous air intake portion 22 having a large area for intake, and the right side wall 21 is provided with an oil cooler 19 fixed integrally. .
The air sucked from the air intake portion 22 formed on the right side wall 21 by the operation of the fan 17 passes through the radiator 16, then flows through the driving portion 8 and flows toward the cutting portion 3 and is discharged. It is configured as follows.

The support base 20 and the right side wall 21 are integrally connected to each other, thereby forming a driving part cover 23 that surrounds the driving part 8. It is configured to be supported by the traveling machine body 2 so as to be rotatable around the front-rear axial center X at the lower end over the fall open state (see FIG. 9, but FIG. 9 shows the middle of the fall state). Incidentally, although not shown in the drawings, the driving unit cover 23 is appropriately fixed to a frame (not shown) on the traveling machine body 2 side with screws in an appropriate mounting state.
When the prime mover cover 23 is laid down and switched to the open state, the prime mover 8 is opened outward, and the maintenance work of the prime mover 8 can be easily performed.

  As shown in FIGS. 8 and 10, the dust proof net 18 acting on the air sucked by the action of the fan 17 is supported by a metal frame 25 on the periphery and provided on the left and right sides of the upper part of the frame 25. The locking member 26 thus held can be held on the radiator 16 in a state where the locking member 26 is locked to the locked portion 27 on the upper side of the radiator 16 and positioned at the proper mounting position.

As shown in FIG. 8, a rubber contact member 28 is provided at a location facing the periphery of the dust proof net 18 in the motive part cover 23, and when the motive part cover 23 is fixed in an appropriately mounted state, The contact member 28 is configured to contact the periphery of the dust-proof net 18 so that no gap is generated. Also, as shown in FIG. 10, a sponge that prevents dust from entering through the gap between the peripheral edge of the radiator 16 on both sides in the front-rear direction of the machine body where gaps are likely to occur around the dust net 18. A dustproof member 29 made of a material is provided.
The dustproof member 29 may be provided over the entire area around the dustproof net 18.

  When the driving section cover 23 is turned over to the side and opened, the dust screen 18 is exposed in a state of facing outward, and the dust screen 18 is lifted upward to lock the locking member 26 to the locked portion 27. Can be easily removed by releasing the, and an operation of removing the attached dust can be performed.

  As shown in FIG. 12, the muffler 30 through which the exhaust gas of the engine 15 passes is provided at the upper portion of the prime mover 8, and the exhaust pipe 31 that guides the exhaust gas from the muffler 30 to the outside of the machine is exhaust gas from the engine 15. Is composed of a longitudinal guide portion 31A that guides the exhaust gas to the lower side of the prime mover 8, a front and rear guide portion 31B that guides the exhaust gas to the rear side of the fuselage, and an arcuate guide portion 31C in the middle thereof. The longitudinal guide portion 31A and the longitudinal guide portion 31B include a cylindrical outer cylinder cover 32 that covers the outside with an air layer for heat insulation interposed therebetween, and also has an arcuate guide. The portion 31C is configured to be covered with a cover body 33 bent in a substantially U shape so that the temperature of the outer surface of the member covering the exhaust pipe 31 is as low as possible.

  As a member covering the outer periphery of the exhaust pipe 31, instead of the form in which the arcuate guide portion 31C is covered with the cover body 33 as described above, a heat insulating air layer is interposed over substantially the entire length of the exhaust pipe 31, and You may comprise by the double cylinder structure provided with an outer cylinder (not shown) in the state curved along the exhaust pipe 31. FIG.

  As shown in FIG. 1, the cutting unit 3 is connected to the traveling machine body 2 so as to be movable up and down by swinging up and down around the horizontal axis P by a lifting hydraulic cylinder 34. A plurality of weeding tools 35 for weeding the planted cereals located on a plurality of planting ridges to be harvested, a plurality of raising devices 36 for causing the planted sorghum to be harvested, and A clipper-shaped cutting device 37 that cuts and harvests the plant stock, and a cereal conveying device 38 that conveys the harvested cereal culm to the rear threshing device 4 are provided.

  The grain culm transporting device 38 includes a stock holding and transporting mechanism 39 that transports while holding the stock of the harvested cereal mash, a tip locking transport mechanism 40 that latches and transports the point side of the harvested cereal mash, and the harvested cereal mash The stock holding mechanism 41 receives the stock side of the harvested cereal from the feed terminal 42 to the feed chain 42 of the threshing device 4 from the end of the transport. Is configured to pass.

  The threshing device 4 feeds the tip side to the handling chamber 4A while sandwiching the stock side of the harvested cereal rice cake by the feed chain 42 and transporting it backward, so that the threshing process is performed by the handling cylinder 4B that rotates the harvested cereal rice cake. It is configured.

  As shown in FIGS. 2, 5, and 7, the threshing device 4 is cut at the front part of the machine body, transferred from the cereal carrying device 38, and nipped by the feed chain 42 and conveyed. An inlet plate 43 that receives the head side of the grain pod and flows down to the supply port 44 is provided, and the head side of the harvested cereal rice basket is received by the inlet plate 43 and guided from the supply port 44 of the threshing device 4. It is comprised so that it may supply to the inside of a handling chamber.

  In the threshing device 4, the tip side is threshed in the handling chamber 4A by the handling cylinder 4B, and the processed product obtained by the threshing processing is leaked from a receiving net (not shown), etc. , Screened by swinging sorting mechanism (not shown) or wind sorting by sorting wind from tang (not shown), etc. So as to collect mixed grains such as grain with brackish seeds and straw scraps, and cut straws and straw scraps as No. 3, and collect single grains and supply them to the grain tank 5 It is configured. Further, the waste straw after the threshing process is transported to the rear side of the machine body by the feed chain 42 and the waste straw transporter 45 and is shredded by the waste straw processor 46.

  When the transmission system is described, as shown in FIG. 13, the output of the engine 15 is transmitted to the threshing device 4 via the belt-tension type threshing clutch 49, while the output of the engine 15 is transmitted via the belt transmission device 50. So as to be transmitted to the left and right traveling apparatuses 1 and 1 after being shifted by a hydrostatic continuously variable transmission (HST) 53 provided in the mission case 51. It is configured. Further, the output of the continuously variable transmission 53 is transmitted to the cutting unit 3 via a transmission output shaft 54, a one-way clutch 55, and a belt tension type cutting clutch 56.

  The one-way clutch 55 enables the mowing unit 3 to always be driven by rotation in the forward rotation direction even if the continuously variable transmission 53 changes the shift output in the forward rotation direction and the reverse rotation direction. However, the one-way clutch 55 is interposed between the transmission output shaft 54 and the pulley 57 of the cutting clutch 55.

  In the case where the one-way clutch 55 fails, only the one-way clutch 55 is replaced and other components can be shared. That is, as shown in FIG. 14, a rotating body 61 including a large-diameter portion 58 having a small width on which the one-way clutch 55 acts and a small-diameter portion 60 having a bearing 59 on the outer peripheral portion of the transmission output shaft 54 can be integrally rotated. The pair of bearings 59, the one-way clutch 55, the retaining circlip 62, etc. are separately assembled between the rotating body 61 and the pulley 57, and the one-way clutch 55 fails. In this case, the respective parts can be removed, only the one-way clutch 55 can be replaced, and other parts can be used as they are and reassembled.

  As shown in FIG. 2 and FIG. 15, a rubber sheet 65 (an example of a flexible sheet body) extends in the rearward direction and overlaps the inlet plate 43 from above at the conveyance terminal portion of the cereal conveyance device 38. Is attached. Thus, the rubber sheet 64 is overlapped so as to be received and supported by the inlet plate 43, so that the gap between the cereal conveying device 38 and the inlet plate 43 is maintained even when the cutting unit 3 is swung up and down. It is comprised so that the tip side of the harvested cereal can be smoothly guided without generating.

The mowing unit 3 is located on the front side of the traveling machine body 2 and is capable of harvesting the planted cereal and transporting the harvested cereal, and a maintenance retreat state in which the front side of the traveling machine body 2 is opened. And can be switched freely.
Such a configuration for switching the reaping portion 3 between the reaping operation state and the maintenance evacuation state is a well-known technique, and therefore the specific detaching configuration will not be described in detail. A cutting part such as a connecting part to the hydraulic cylinder 34 or a connecting part supported so as to swing up and down is supported on the traveling machine body 2 so as to be swingable around a longitudinal axis Y located on the opposite side to the side. 15 is released, and the cutting part 3 is swung around the longitudinal axis Y to open the front side of the traveling machine body 2 as shown in FIG. It can be switched to the maintenance retreat state.

  As shown in FIG. 2 and FIG. 4 to FIG. 7, the gap formed between the partition wall 6 and the reaping part 3 (the grain feeder 38) is closed, so that the threshing process is accompanied by the reaping operation. A dustproof cover K is provided to prevent dust such as straw scraps from falling downward from the gap.

The dust-proof cover K includes a ceiling wall portion 70 that covers the upper part of the gap in a state of projecting from the partition wall 6 toward the harvesting portion 3 (the grain conveying device 38), and a front side edge portion 71 of the ceiling wall portion 70. A front vertical wall portion 72 extending in a vertical posture in a state where it is continuous downward from a vertical direction, and a vertical posture in a state of being continuous downward from a rear side edge portion 73 of the ceiling wall portion 70 The rear end vertical wall portion 74 is connected to the inlet plate 43 at the lower end portion.
In the dust cover K, the ceiling wall portion 70, the front vertical wall portion 72, and the rear vertical wall portion 74 are each formed of a sheet metal material as an example of a hard material.

  Thus, since the dustproof cover K is formed of a hard material (sheet metal material), the shape of the dustproof cover K does not change even when the cutting portion is switched to the maintenance retracted state. As a result, even if the mowing part is switched to the evacuation state for maintenance after performing the mowing work or during the mowing work, the dustproof cover is also used when the mowing part is switched to the mowing work state again after performing the maintenance work. Since K can maintain a state in which an appropriate dustproof function can be exhibited, it is possible to appropriately prevent dust from entering the inside of the machine body such as the driving part.

  In other words, as shown in FIGS. 4 to 7, the ceiling wall portion 70 is formed in a substantially triangular shape in plan view using a non-breathable plate, and the edge portion 75 on the partition wall 6 side. A flange portion 76 for mounting is integrally formed on the edge portion 77 of the ceiling wall portion 70 on the threshing device 4 side, and is placed from a gap with the wall portion 78 connected to the partition wall 6. A vertical surface portion 79 is integrally formed to prevent falling dust.

  As shown in FIGS. 4 and 5, the edge of the ceiling wall part 70 on the side of the cutting part 3 (the grain conveying device 38) is located on the front side of the machine body so as to move away from the partition wall 6 toward the rear side of the machine body. It consists of a front side edge 71 that is in an oblique posture and a rear side edge 73 that is located on the rear side of the front side edge 71, and the front side edge 71 and the rear side edge 73 include The vertical surface portions 80 and 81 are formed in a state of being bent downward, and a nut is previously welded to a screw fastening portion on the inner surface side of the vertical surface portion 80 of the front side edge portion 71, so that the vertical posture is maintained. The front vertical wall portion 72 is applied from the outer surface side of the vertical surface portion 80 and can be fixed by tightening screws. In addition, the rear vertical wall portion 74 in the vertical orientation is provided along the vertical surface portion 81 of the rear side edge portion 73 so as to be close thereto.

  As shown in FIGS. 4, 6, and 7, the front vertical wall portion 72 is formed of a porous body having a large number of small-diameter vent holes 82, and the front vertical wall portion 72 is formed on the partition wall 6. On the lower side of the lower end portion, a laterally extending portion 72a is formed that extends toward the boarding operation portion 7 through the lower side of the partition wall 6. A fixing attachment portion 72b is formed at the front end of the extending direction, and the attachment portion 72b is configured to be fixed to the support frame 90 for lever support with screws.

  By forming the front vertical wall portion 72 in a porous body in this way, the air is sucked from the air intake portion 22 of the right side wall 21 located on the opposite side of the driving portion 8 from the cutting portion 3 by the operation of the fan 17. It is configured to allow the air that has passed through the portion 8 to pass toward the cutting portion 3 side and prevent the passage of dust.

  As a result, by covering the front side portion of the gap formed between the partition wall 6 and the cutting part 3, dust such as straw scraps generated from the cutting part 3 passes through the opening on the lower side of the partition wall 6. It is possible to appropriately prevent the intrusion into the prime mover 8, and the air passes through the front vertical wall 72 made of a porous body toward the harvesting unit 3 (the grain feeder 38), It becomes easy to avoid dust such as straw scraps generated in the cutting unit 3 from entering the boarding operation unit 7.

As shown in FIG. 7, the rear vertical wall portion 74 includes a front-rear direction wall portion 74A along the front-rear direction, an oblique direction wall portion 74B that is inclined so as to move away from the partition wall 6 toward the rear side of the machine body, A receiving bottom plate portion 74C connected over the lower end portions is integrally formed, and a vertical surface portion 74D for attachment is integrally formed at the rear side end portion of the machine body.
The vertical surface portion 74 </ b> D is screwed and fixed to a wall portion 78 connected to the partition wall 6, and the lower end portion of the oblique wall portion 74 </ b> B and the receiving bottom plate portion 74 </ b> C are fixed to the inlet plate 43 with screws.

  The oblique wall portion 74B is inclined obliquely upward and rearward in such a manner that the upper edge thereof becomes higher toward the rear side, and is inclined obliquely downward and downward in such a manner that the lower edge thereof becomes lower toward the rear side. The receiving bottom plate portion 74 </ b> C is provided so as to be inclined so as to continue to the inlet plate 43 so as to receive the dust dropped from the ceiling wall part 70 and guide it to the supply port 44.

  The front vertical wall portion 72 is extended to a position lower than the lower end edge of the front and rear direction wall portion 74A so that a step is formed between the lower end edge of the front side vertical wall portion 72 and the lower end edge of the front and rear direction wall portion 74A. ing. Further, as shown in FIG. 4, the front vertical wall 72 is positioned so that the lower end edge of the front vertical wall 72 is positioned at substantially the same height as the lower end of the muffler 30 or lower than the lower end of the muffler 30. Has been deployed.

As shown in FIG.4 and FIG.6, the ceiling wall part 70 is formed in the inclination attitude | position which is located in the downward direction, so that it is located in the harvesting part 3 (grain haul conveyance apparatus 38) side. With such a configuration, even if dust such as straw scraps is scattered on the upper portion of the ceiling wall portion 70 with the cutting operation, the cutting portion is gradually increased with the vibration of the traveling machine body 2 and the cutting portion 3. It moves to the 3 side and falls.
And between the vertical surface part 81 and the rear side vertical wall part 74 of the rear side edge part 73 in the ceiling wall part 70, and between the vertical surface part 79 and the wall part 78 of the ceiling wall part 70, those clearance gaps. A dustproof member 92 made of a sponge material is provided in order to prevent the dust from falling off.

  However, at a location close to the supply port 44 of the threshing device 4, the upper edge is supplied to the threshing device 4 so that straw scraps blown from the inside of the handling chamber through the supply port 44 do not scatter. The rear vertical wall portion 74 is provided in a state of projecting upward from the upper surface of the ceiling wall portion 70 in an oblique state that becomes a higher position as it approaches the mouth 44.

  As shown in FIG. 2, the rubber sheet 65 attached to the cereal conveyance device 38 so as to overlap the inlet plate 43 vertically contacts the front vertical wall portion 72 and the rear vertical wall portion 74 of the dust cover K. It is comprised so that. As described above, since the rubber sheet 65 is provided in contact with the dustproof cover K, the rubber sheet 65 is maintained in contact with the dustproof cover K even when the cutting unit 3 is lifted and lowered, and no gap is formed. Dust can be prevented from falling on the prime mover 8.

[Another embodiment]
(1) In the above embodiment, the ceiling wall portion 70 is formed so as to be inclined downward as it is located on the cutting portion 3 side. However, the ceiling wall portion 70 is formed in a horizontal posture. But you can.

(2) In the above embodiment, the front vertical wall portion 72 is formed of a porous body, and the rear vertical wall portion 74 is formed of a non-breathable plate, but the front vertical wall portion 72 is shown. Each of the rear vertical wall portion 74 may be formed of a non-breathable plate, and each of the front vertical wall portion 72 and the rear vertical wall portion 74 may be formed of a porous body. .

(3) In the said embodiment, what is comprised so that the rubber sheet 65 as a flexible sheet body may be in the state which touches each of the front side vertical wall part 72 and the rear side vertical wall part 74 in the dust cover K. Although shown, the rubber sheet 65 may be configured such that a gap is generated between the rear vertical wall 74 and the rubber sheet 65 as a state in which the rubber sheet 65 is in contact with only the front vertical wall 72 in the dust cover K. .

(4) In the above embodiment, the rear vertical wall portion 74 is provided at a location near the supply port 44 of the threshing device 4 so as to protrude upward from the upper surface of the ceiling wall portion 70. As shown in FIG. 16, the rear vertical wall portion 74 extends over the entire area of the rear side edge portion 73 of the ceiling wall portion 70, and the upper edge portion thereof is at the same height as the upper surface of the ceiling wall portion 70. It is good also as a structure provided with the form which does not protrude upwards from the upper surface of 70. FIG.

(5) In the above-described embodiment, the dust cover K is composed of a sheet metal material as an example of the hard material, but may be composed of a hard synthetic resin material or the like.

(6) In the above embodiment, the cutting unit 3 is supported by the traveling machine body 2 so as to be swingable around the vertical axis Y located on the side opposite to the boarding operation unit 7 side. Although it is configured to be able to switch to a maintenance retreat state in which the front side of the traveling machine body 2 is opened by swinging around the core Y, instead of such a configuration, the cutting unit 3 is detachably traveled. As a configuration to be connected to the machine body 2, the cutting unit 3 may be removed from the traveling machine body 2 and separated to the outer side to switch to a maintenance retreat state in which the front side of the traveling machine body 2 is opened. However, the configuration may not be able to be switched to the maintenance action retracted state.

  INDUSTRIAL APPLICABILITY The present invention can be applied to a self-removing combine in which the cereals harvested by the harvesting unit are threshed while being transported while holding the stock.

DESCRIPTION OF SYMBOLS 2 Traveling machine body 3 Cutting part 4 Threshing apparatus 6 Partition wall 7 Boarding operation part 8 Driving | running part 17 Ventilation means 37 Cutting apparatus 38 Grain conveying apparatus 42 Feed chain 43 Inlet plate 44 Supply port 65 Flexible sheet body 70 Ceiling wall part 71 Front side edge portion 72 Front side vertical wall portion 73 Rear side edge portion 74 Rear side vertical wall portion 82 Vent hole K Dust cover

Claims (3)

A harvesting unit having a harvesting device for harvesting a planted grain cake and a harvesting device for conveying the harvested rice cake to the threshing device is provided,
A boarding operation part is provided in a state of being partitioned by the mowing part and a partition wall at a position on one side of the front part of the traveling machine body, and a driving part is provided below the boarding operation part,
An entrance for receiving the tip side of the harvested cereal rice cake that is delivered from the cereal conveying device and conveyed by being fed from the cereal conveying device to the front side portion of the threshing device, and flows down to the handling room A plate,
A dustproof structure for a self-removable combine equipped with a dustproof cover that closes a gap formed between the partition wall and the cutting part,
A ceiling wall portion covering the upper part of the gap in a state where the dust cover protrudes from the partition wall toward the cutting portion side, and on the cutting portion side edge portion of the ceiling wall portion on the front side of the machine body A front vertical wall portion that extends in a vertical posture in a state of being continuous downward from a front side edge portion that is positioned so as to be separated from the partition wall toward the rear side of the machine body, and the ceiling wall portion Among the edges on the cutting part side, the rear side edge part located on the rear side of the machine body from the front side edge part is extended in a vertical posture in a state of being continuous downward, and the lower end part thereof is Each of the rear vertical wall portions connected to the inlet plate is configured to be formed with a hard material,
A flexible sheet body that guides the tip part of the harvested cereal grain toward the inlet plate from the conveying terminal part of the grain culm conveying device is in contact with the front vertical wall part in the dustproof cover and vertically on the inlet plate. A self-detaching combine dust-proof structure that is provided in an overlapping state.   The dustproof structure for a self-removable combine according to claim 1, wherein the ceiling wall portion is formed in an inclined posture that is positioned downward as it is positioned closer to the cutting portion. The driving part is provided with ventilation means for sucking cooling air from a position opposite to the cutting part and for passing cooling air so as to blow out toward the cutting part side,
The dust-proofing of the self-removing combine according to claim 1 or 2, wherein the front vertical wall portion is formed of a porous body having a small-diameter air hole that allows passage of cooling air and prevents passage of dust. Construction.

Images