JP2012191909A - Waste straw shredder - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a waste straw shredder capable of effectively preventing entwining or clogging with dust in a bearing or a rotation shaft.SOLUTION: The waste straw shredder includes: a case-side cover 53 fixed to the inner side of a shredding case 40 in such a state as located coaxially with the rotation shaft 42 on the outer periphery of a holder 50 of the bearing 51; and a shaft-side cover 54 which is integrally rotatably connected to the rotation shaft 42 in such a state that the outer peripheral part 54c overlaps with the case-side cover 53 in the radial direction of the rotation shaft 42, and which relatively rotates to the case-side cover 53. A dust discharge opening 55 is disposed below the case-side cover 53 for discharging dust from a cover inner space 56 formed in the periphery of the holder 50 by the case-side cover 53 and the shaft-side cover 54. A rotary member 57 for scraping off the dust to the dust discharge opening 55 is disposed in the cover inner space 56 in such a state as rotatable integrally with the rotation shaft 42.

Description

  According to the present invention, a plurality of cutters are arranged on one of a pair of rotating shafts supported by a shredding case so as to be driven to rotate, and are arranged in the axial direction of the rotating shaft so as to be integrally rotatable, and on the other of the pair of rotating shafts. The present invention relates to a drainer shredding device configured such that a plurality of supply bodies are arranged side by side in the axial direction of the rotary shaft so as to be integrally rotatable, and the threshing drainer is shredded by the plurality of cutters.

  Conventionally, there has been a waste straw shredding device described in Patent Document 1, for example. In the one described in Patent Document 1, a cylindrical body fixed to the lateral side wall of the cutter case in a state of being coaxially positioned with the cutting shaft on the outer periphery of a bearing holder that supports the cutting shaft, and this cylindrical shape A ring body is provided on the inner side of the body so as to be integrally rotatable with the cutting shaft in a state where the outer peripheral portion is relatively rotatable.

JP 2010-99027 A (FIG. 9)

  If the above-mentioned conventional technology is applied to prevent dust such as straw scraps generated inside the shredded case from winding around the rotating shaft and the bearing that supports the rotating shaft or clogging, A case-side cover that is coaxially positioned around the rotating shaft is fixed to the shredded case, and the shaft-side cover with the outer periphery overlapping the case-side cover in the radial direction of the rotating shaft is integrated with the rotating shaft. It is conceivable to form a dust-proof structure that is rotatably connected and surrounds the periphery of the bearing holder with a case-side cover and a shaft-side cover. In this case, a gap is formed between the case-side cover and the outer peripheral portion of the shaft-side cover, and a space in the cover is formed around the holder by the case-side cover and the shaft-side cover. Dust may enter the cover inner space through the gap with the outer periphery of the side cover, and if the dust that has entered the cover inner space stays in the cover inner space, the rotating shaft and bearings may be wrapped around or clogged with dust. Is still prone to occur.

  An object of the present invention is to provide a drainer shredding device capable of satisfactorily preventing the wrapping and clogging of dust.

According to the first aspect of the present invention, a plurality of cutters are arranged on one of a pair of rotating shafts that are rotatably supported by the shredding case and arranged in the axial direction of the rotating shaft so as to be integrally rotatable. On the other hand, in the drainer shredder configured to arrange a plurality of supply bodies so as to be integrally rotatable in the axial direction of the rotary shaft, and to shred the threshing drainer by the plurality of cutters,
A case-side cover fixed to the inner surface side of the shredded case in a state of being coaxially positioned with the rotary shaft around the outer periphery of a bearing holder that supports the rotary shaft, and an outer peripheral portion with respect to the case-side cover A shaft side cover that is coupled to the rotation shaft so as to rotate integrally with the rotation shaft in a state of overlapping in the radial direction of the rotation shaft and that rotates relative to the case side cover corresponds to one or both of the pair of rotation shafts. Set up,
Provided in the lower part of the case side cover is a dust exhaust opening for discharging dust from the cover inner space formed around the holder by the case side cover and the shaft side cover,
A rotating member that scrapes dust out to the dust discharge opening is disposed in the cover inner space so as to be rotatable integrally with the rotating shaft.

  According to the configuration of the first invention, the periphery of the holder of the bearing is surrounded by the case side cover and the shaft side cover, so that it is difficult for dust to flow into the bearing and the vicinity thereof. A cover inner space is formed around the holder by the case side cover and the shaft side cover, and dust may enter the cover inner space from a gap formed between the case side cover and the outer periphery of the shaft side cover. However, the dust that has entered the interior space of the cover can be moved to the dust exhaust opening by natural dropping or scraping by the rotating member, and discharged from the dust exhaust opening to the outside of the cover.

  Therefore, inflow of dust to the bearing and its vicinity can be prevented not only by the enclosure by the case side cover and the shaft side cover, but even if dust enters the cover inner space, it is difficult to stay in the cover inner space and the rotating shaft As a result, it is possible to satisfactorily prevent the winding and clogging of dust and bearings and to prevent troubles such as driving failure due to dust.

  In the second aspect of the invention, the dust discharge opening is disposed so that the center of the dust discharge opening in the rotation axis rotation direction is biased toward the lower side in the rotation axis rotation direction with respect to a vertical line passing through the axis of the rotation shaft. It is.

  The threshing waste straw is introduced between the cutter and the supply body and chopped, and the generated chopped straw falls from between the pair of rotating shafts and is discharged, but the chopped straw to be discharged is the cutter. When the hook is caught on the supply body, the shredded straw may not be dropped smoothly from the cutter or the supply body and may be swung up by the cutter or the supply body. According to the configuration of the second aspect of the invention, the dust discharge opening is biased toward the moving side of the shredder that has been swung up with respect to the vertical line passing through the axis of the rotating shaft, and the shredder is swung up. However, it is difficult to enter the dust opening.

  Therefore, it is possible not only to facilitate the discharge of dust that has entered the interior space of the cover, but also to prevent entry of shredders or the like into the interior space of the cover from the dust exhaust opening for that purpose, and better dust retention in the interior space of the cover Can be prevented.

  In the third aspect of the invention, the shredder case is connected to the rear portion of the threshing device, and the pair of rotating shafts are arranged in the front-rear direction of the threshing device, and the case side cover and the shaft side cover are the pair of threshing devices. It is provided corresponding to the rotation shaft on the rear side of the threshing device among the rotation shafts.

  According to the configuration of the third invention, the dust discharge opening is biased to the rear side of the threshing machine body with respect to the vertical line passing through the axis of the rotation shaft, and is discharged from the dust discharge opening by being scraped by the rotating member. Dust can be easily discharged toward the rear of the threshing machine.

  Therefore, the dust discharged from the shredding case can be discharged as far away as possible from the threshing machine so as not to adhere to the threshing machine.

  In the fourth aspect of the invention, a spring body is pressed against the plurality of cutters or the plurality of supply bodies in the axial direction of the rotating shaft near the outside of the shaft-side cover of the rotating shaft. A spring case that fits outside and accommodates the spring body is connected to the shaft-side cover so as to be integrally rotatable.

  The spring body is conventionally provided. In order to accommodate this spring body in the spring case, according to the configuration of the fourth aspect of the present invention, the shaft side cover and the spring case can be assembled to the rotating shaft all at once.

  Therefore, while the dust can be prevented from adhering to the spring by the spring case, the shaft side cover and the spring case can be assembled all at once and can be assembled efficiently.

  According to the fifth aspect of the present invention, a rotary vane disposed on the side opposite to the side on which the shaft-side cover is located with respect to the spring case is provided on the outer peripheral side of the rotary shaft so as to be integrally rotatable with the rotary shaft, A notch portion into which the spring case enters is provided at an end portion of the rotating blade plate on the spring case side, and the end surface of the rotating blade plate facing the notch portion is in contact with the outer peripheral surface and the side surface of the spring case. A rotating blade is assembled.

  According to the configuration of the fifth aspect of the invention, in order to scatter shredder and dust by the rotating blade plate so as not to enter the case side cover and the shaft side cover, the range located on the outer peripheral side of the rotating shaft of the rotating blade plate is The end of the rotating blade plate on the side where the cutout portion is provided covers the spring case so that it is possible to accurately scatter the scraps and the like by the rotating blade plate. The end face that faces the notch of the rotating blade is in contact with the outer peripheral surface and the side surface of the spring case, so that no gap is formed between the rotating blade plate and the outer peripheral surface and the side surface of the spring case. It is hard to clog with straw scraps.

  Therefore, while preventing the occurrence of clogging of the waste dust between the rotary blade plate and the spring case, the dust inside the case is properly scattered by the rotary blade plate located over a wide range on the outer peripheral side of the rotary shaft. It is possible to prevent the dust from entering the surface.

It is a side view which shows the whole combine. It is a top view which shows the whole combine. It is a vertical side view which shows a threshing apparatus. It is a side view which shows the front-end part of a handling cylinder. It is a front view which shows a handling cylinder. It is a longitudinal cross-sectional view which shows the site | part of the handling cylinder to which the liner was attached. It is sectional drawing which shows the connection structure of a liner. It is sectional drawing which shows the connection structure of a liner. It is sectional drawing which shows the comparative example of the connection structure of a liner. It is a top view which shows a waste wall conveying apparatus and a waste wall shredding apparatus. It is a side view showing a waste straw conveying device and a waste straw shredding device. It is a side view which shows the conveyance termination | terminus part of a waste wall conveying apparatus. It is a rear view which shows the conveyance termination | terminus part of a waste wall conveying apparatus. It is a perspective view which shows a cover structure. It is a top view which shows the site | part in which the cutter of a waste wall shredding device is located. It is a longitudinal cross-sectional view which shows the support structure and dust-proof structure of the rotating shaft which provided the cutter. (A) is a side view which shows a case side cover, (b) is a longitudinal cross-sectional view which shows a case side cover. (A) is a side view which shows a shaft side cover, (b) is a longitudinal cross-sectional view which shows a shaft side cover. It is sectional drawing which shows the dustproof means of a rotating shaft.

Hereinafter, embodiments of the present invention will be described with reference to the drawings. The case where the combiner is equipped with the waste straw shredding device according to the present invention will be described.
FIG. 1 is a side view showing the entire combine. FIG. 2 is a plan view showing the entire combine. As shown in these drawings, the combine is configured to be self-propelled by the crawler traveling device 1 and is connected to the traveling body equipped with the riding type driving unit 2 and the front part of the body frame 3 of the traveling body. And a threshing device 5 and a grain tank 6 that are arranged side by side in the lateral direction of the airframe on the rear side of the airframe frame 3, and a waste straw shredding device 7 that is connected to the rear portion of the threshing device 5. It is made up of rice and wheat.

  That is, the cutting unit 4 includes a cutting unit frame 4 a that extends from the machine body frame 3 so as to be swingable up and down, and the cutting unit frame 4 a is swung by the lift cylinder 8, whereby the front end portion of the cutting unit 4. The weeding tool 4b provided at the lowering position moves up and down to the lower working position where the weeding tool 4b descends to the vicinity of the ground, and the ascending non-working position where the weeding tool 4b rises higher from the ground. When the mowing unit 4 is lowered to the lowering work position and the traveling machine body is run, the mowing unit 4 causes the planted culm to be harvested by the weeding tool 4b to be introduced into the path, and the planting that has been induced and introduced into the path. The standing culm is raised by the device 4c and cut by the clipper type reaping device 4d, and the chopped cereal is supplied to the threshing device 5 by the supply device 4e. The threshing device 5 threshs the supplied harvested cereal meal and sends the threshed grains to the grain tank 6. The waste straw shredding device 7 shreds the threshing waste straw from the threshing device 5 in the slimming direction.

The threshing apparatus 5 will be described.
FIG. 3 is a longitudinal side view showing the threshing device 5. As shown in this figure, the threshing device 5 has a threshing portion 5A having a handling chamber 11 formed in the upper part of the threshing machine 10 and a swing sorting device 12 provided below the handling chamber 11. And a sorting unit 5B.

  The threshing unit 5A holds the stock side of the harvested cereal from the supply device 4e of the harvesting unit 4 by the threshing feed chain 5a, conveys it toward the rear of the threshing machine body 10, and handles the tip side of the harvested cereal. Threshing is performed by the handling cylinder 13 and the receiving net 14 which are supplied to the chamber 11 and rotated, the threshing grains are dropped from the receiving net 14, and the threshing waste wall is located at the rear end of the handling room 11 by the threshing feed chain 5 a. It is carried out from the dust feeding port 15 and supplied to the waste straw conveying device 20.

  The sorting unit 5 </ b> B receives processed products such as threshing grains that have fallen from the receiving net 14 by the swing sorting device 12, and swings and sorts by the swing sorting device 12 and is supplied to the rear of the threshing machine body by the Kara 16. It sorts into grain and dust by wind sorting by sorting wind, the first processed material is dropped onto the first screw conveyor 17, the second processed material is dropped onto the second screw conveyor 18, and the dust is removed by a dust exhaust fan 19. Is discharged to the rear of the threshing machine body 10 through the shredding case 40 of the draining shredder 7, and the dust is exhausted together with the sorting wind through the lower part of the dust fan 19, and the dust outlet 10 a provided at the rear of the threshing machine body 10. To the rear of the threshing machine body 10.

The handling cylinder 13 will be described.
FIG. 4 is a side view showing the front end portion of the handling cylinder 13. FIG. 5 is a front view showing the handling cylinder 13. As shown in these drawings, at the front end portion of the handling cylinder 13 provided with the teeth 30, the four liners 32 are arranged and abutted in the circumferential direction on the surface side of the drum body 31 constituting the handling cylinder 13. Is provided. FIG. 6 is a longitudinal sectional view showing a portion of the handling cylinder 13 to which the liner 32 is attached. As shown in this figure, the liner 32 is configured by a bent sheet metal that is bent and formed along the outer surface of the barrel body 31.

  7 and 8 are cross-sectional views showing a connection structure between a pair of adjacent liners 32 and 32. The handling cylinder 13 is rotationally driven in the rotational direction F shown in FIG. A pair of adjacent liners 32 and 32 are arranged in a state in which the upper end portion of the liner 32a on the lower side of the barrel rotation direction overlaps the surface side of the liner 32b on the upper side of the barrel rotation direction. The shape of the portion 32S located between the liner 32b on the upper side of the barrel rotating direction of the liner 32a on the lower side of the barrel rotating direction and the drum body 31 in the cross section along the radial direction of the barrel is the upper side in the rotating direction of the barrel. A stepped portion having a gentle downward angle is formed so as to descend from the portion W overlapping the liner 32b to the drum body 31 at a gentle downward angle so as to come into contact with the outer surface of the drum body 31, and a pair of adjacent liners 32, 32 are formed. It is made hard to generate | occur | produce by the collision of the grain in the level | step-difference part which continues. That is, FIG. 9 is a cross-sectional view showing a comparative structure of a portion where a pair of adjacent liners 32 and 32 are continuous. As shown in this figure, the shape of the section 32s located across the liner 32b on the upper side of the cylinder rotation direction of the liner 32a on the lower side of the cylinder rotation direction and the drum body 31 in the cross section along the radial direction of the cylinder is shown. When the shape is such that a stepped portion having a steep downward angle is formed so as to descend from the portion W overlapping the liner 32b on the upper side of the barrel rotation direction to the drum body 31 at a steep down angle and to contact the outer surface of the drum body 31. The step portion where a pair of adjacent liners 32 and 32 are continuously worn out in response to a shocking collision of the grains.

The waste straw conveying device 20 will be described.
As shown in FIGS. 10 and 11, the waste straw conveying device 20 includes an endless rotating conveying chain 21 and an endless rotating conveying chain 21 that extend from the lateral side of the conveying terminal portion of the threshing feed chain 5 a to the rear portion of the threshing machine body 10. A holding conveyance rail 22 positioned along the endless rotation conveyance chain 21 is provided below, and the stocker side of the threshing drainer carried out of the handling chamber 11 by the threshing feed chain 5a is connected to the endless rotation conveyance chain. 21 and the sandwiching and conveying rail 22, and sandwiched and transported backward in the threshing device 10, and carried out from the outlet 10 b located at the rear of the threshing device body 10 to the rear side of the threshing device body 10. It is dropped on the cutting case 40.

  FIG. 12 is a side view showing a conveyance terminal portion of the waste straw conveying device 20. The conveyance terminal end side of the sandwiching conveyance rail 22 is supported by a stay 23 fixed to the frame 5b of the threshing machine body 10 via a bracket 5c via a support rod 24 that faces the threshing machine body up and down. The support rod 24 is supported by the boss portion 23a of the stay 23 so as to be slidable up and down. The support rod 24 is attached to the stay 23 by a spring 25 that is disposed between the stay 23 and a connecting portion 24 a provided so that the nipping / conveying tray 22 is connected to the upper end portion of the support rod 24. As a result of the upward biasing, the clamping transport rail 22 is upwardly biased toward the endless rotation transport chain 21.

  As shown in FIGS. 12, 13, and 14, the horizontal frame 5 b of the threshing machine body 10 that supports the waste straw shredding device 7 and the horizontal direction of the machine body of the waste straw shredding device 7 are provided below the conveyance terminal portion of the sandwiching transport rail 22. A pair of left and right main covers 26a, 26b and one auxiliary cover 27 are provided to cover the space between the left and right frames 41 and prevent a long wall or the like from falling forward of the front rotating shaft 43 in the shredded case.

  The left main cover 26a of the pair of left and right main covers 26a, 26b is disposed from the lower part of the conveyance end portion of the holding conveyance rail 22 to the vicinity of the left end of the shredded case 40. The left main cover 26a is connected to the frame 41 of the waste straw shredding device 7 at the end on the rear side, and extends in a cantilevered state from the frame 41 to the front. The right main cover 26b of the pair of left and right main covers 26a, 26b is arranged from below the conveyance end portion of the sandwich conveyance rail 22 to the vicinity of the right end of the shredded case 40. The right main cover 26b is connected to the stay 28 on the rear end side, and extends forward from the stay 28 in a cantilever state. The stay 28 is attached to the frame 41 of the waste straw shredding device 7. The left main cover 26a is provided with a notch 26c at the lateral end, and the volume of the threshing drainer transported by the endless rotating transport chain 21 is large. The notched portion 26c allows the connecting portion 24a of the support rod 24 to be lowered below the left main cover 26a without coming into contact with the left main cover 26a when descending greatly away.

  The auxiliary cover 27 is supported by a stay 29 provided on the frame 5 b of the threshing machine body 10. The auxiliary cover 27 is provided with a notch 27a through which a portion of the support rod 24 where the spring 25 is mounted is inserted. The cutout portion 27a of the auxiliary cover 27 is formed such that the lateral width is smaller than the lateral width of the cutout portion 26c of the left main cover 26a. The auxiliary cover 27 has the connecting portion 24a of the support rod 24 lowered most. Even in such a case, the connecting portion 24a is arranged at a placement height lower than the placement height of the left main cover 26a so as not to contact. That is, even if the auxiliary cover 27 falls vertically on the main covers 26a and 26b and enters the cutout portion 26c of the left main cover 26a, the auxiliary cover 27 is shredded. 40, and the received drainer is passed through a notch 26d provided on the rear end side of the left main cover 26a, between the pair of rotary shafts 42 and 43 inside the shredded case 40. Guide you to fall.

The waste straw shredding device 7 will be described.
As shown in FIGS. 10 and 11, the waste straw shredding device 7 includes a shredding case 40 connected to the rear part of the machine body of the threshing device 5, and a pair of rotary shafts 42 provided rotatably inside the shredding case 40. , 43 and a drive mechanism 44 provided on the laterally outer side of the shredded case 40.

  The pair of rotating shafts 42 and 43 are arranged on the left and right side walls 46 of the shredding case 40 so as to be arranged at a predetermined interval in the front-rear direction of the threshing device below the drainer inlet 45 provided in the upper part of the shredding case 40. It is supported. The rotary shaft 42 on the rear side of the threshing device of the pair of rotary shafts 42, 43 is provided with a plurality of disc-shaped cutters 47 arranged in the axial direction of the rotary shaft 42 at a predetermined interval so as to be integrally rotatable. A plurality of disc-shaped supply bodies 48 are arranged in the axial direction of the rotation shaft 43 at a predetermined interval on the rotation shaft 43 on the front side of the threshing device of the rotation shafts 42 and 43 so as to be integrally rotatable.

  The drive mechanism 44 shifts the driving force transmitted from the threshing device 5 and transmits it to the pair of rotating shafts 42 and 43 so that the pair of rotating shafts 42 and 43 rotate in the rotation directions A and B shown in FIG. In addition, the pair of rotating shafts 42 and 43 are driven so that the rotating shaft 42 provided with the cutter 47 rotates at a higher speed than the rotating shaft 43 provided with the supply body 48.

  Therefore, the waste straw shredding device 7 releases the threshing waste straw from the waste straw transporting device 20 as a long straw without being shredded by opening and closing the waste straw inlet 45 by the swing lid 49. It switches to the long straw discharge form and the shredded discharge form that shreds and discharges the threshing waste straw from the waste straw conveying device 20.

  In other words, when the swing lid 49 is closed and the drainer inlet 45 is closed, the threshing drainer dropped on the shredder case 40 by the drainer transport device 20 is dropped by the swing lid 49 in the closed position. Upon receiving the guidance, the shredded case 40 falls to the rear of the threshing device 5.

  When the swing lid 49 is opened to open the drainer inlet 45, the threshing drainer dropped on the shredder case 40 by the drainer transport device 20 is transferred from the drainer inlet 45 to the shredder case 40. The threshing drainer that has fallen into the shredded case 40 and has fallen into the shredded case 40 is scraped between the supply body 48 and the cutter 47 by the supply body 48 that rotates in the rotation direction B and the cutter 47 that rotates in the rotation direction A. The chopping apparatus is shredded in the slimming direction by a plurality of cutters 47, and the shredder is dropped from between the pair of rotating shafts 42 and 43, and the rear of the threshing device 5 from the discharge port provided in the lower part of the shredded case 40. Let fall.

  FIG. 15 is a plan view showing a portion where the cutter 47 of the drainer shredder 7 is located. FIG. 16 is a longitudinal sectional view showing a support structure of the rotating shaft 42 provided with the cutter 47. As shown in this figure, a female screw cylinder is attached to an end portion formed on a screw shaft of a rotary shaft 42 provided with a cutter 47 to form a connecting shaft portion 42a having a cylindrical outer peripheral surface shape. The portion 42 a is rotatably supported via a collar 52 on a bearing 51 attached to the lateral wall 46 of the shredded case 40 via a holder 50.

The dustproof configuration will be described.
As shown in FIG. 16, a bowl-like case side cover 53 fixed to the inner surface side of the horizontal wall 46 of the shredded case 40, a shaft side cover 54 that is externally fitted to the connecting shaft portion 42 a of the rotating shaft 42, A dust exhaust opening 55 provided in a lower portion of the case side cover 53, a rotating member 57 provided in a cover inner space 56 formed around the holder 50 by the case side cover 53 and the shaft side cover 54, and the shaft side cover 54 A pair of rotary blades 58, 58 provided in a distributed manner around the rotary shaft 42 on the outside is provided so as to prevent sticking and winding of cracks and the like to the bearing 51 and the connecting shaft portion 42a of the rotary shaft 42. Further, the dustproof means 60 is configured.

  The case-side cover 53 is positioned coaxially with the rotary shaft 42 at a position away from the outer peripheral surface of the holder 50 on the outer periphery of the holder 50 by a predetermined distance.

  FIG. 17A is a side view showing the case side cover 53. FIG. 17B is a longitudinal sectional view showing the case side cover 53. As shown in these drawings and FIG. 16, the case side cover 53 includes a disk-shaped attachment plate 53 a formed integrally with one end side of the case side cover 53. A shaft hole 53b through which the connecting shaft portion 42a of the rotating shaft 42 is inserted is provided in the mounting plate 53a and the holder 50 is connected. As shown in FIG. 16, in the case side cover 53, the mounting plate 53 a is fixed to the shredded case 40 on the inner surface side of the lateral wall 46 of the shredded case 40 by co-tightening with the holder 50 with a connecting screw 61.

  FIG. 18A is a side view showing the shaft side cover 54. FIG. 18B is a longitudinal sectional view showing the shaft side cover 54. As shown in these drawings and FIG. 16, the shaft-side cover 54 includes a disc-shaped horizontal cover portion 54 b having a shaft hole 54 a through which the connecting shaft portion 42 a of the rotation shaft 42 is inserted, and the horizontal cover portion. A cylindrical outer peripheral portion 54 c extending from the outer peripheral end portion 54 b toward the case side cover 53 is provided. A pair of rotary blades 58, 58 and a spring case 62 are connected to the outer surface side of the lateral cover portion 54b, and a mounting cylinder shaft 63 made of a hexagonal cylinder is connected to the inner peripheral side of the pair of rotary blades 58, 58. is there. As shown in FIG. 16, the shaft-side cover 54 is configured such that the outer peripheral portion 54 c has a radius of the rotating shaft 42 with respect to the case-side cover 53 by fitting the mounting cylinder shaft 63 to the hexagonal shaft portion 42 b of the rotating shaft 42. It is supported by the rotating shaft 42 in a state of overlapping in the direction and positioned coaxially with the rotating shaft 42. The shaft-side cover 54 is connected to the rotating shaft 42 so as to be integrally rotatable by the mounting cylinder shaft 63 being engaged with the hexagonal shaft portion 42b of the rotating shaft 42 so as to be integrally rotatable with the hexagonal shape of the inner peripheral surface. Is done.

  The pair of rotating blades 58 and 58 and the spring case 62 rotate integrally with the rotating shaft 42 by the mounting cylinder shaft 63 engaging with the hexagonal shaft portion 42b of the rotating shaft 42 so as to be integrally rotatable.

  As shown in FIG. 18, the rotating member 57 provided in the cover inner space 56 is fixed to the lateral cover portion 54 b of the shaft side cover 54 and rotates integrally with the rotating shaft 42. The rotary member 57 has a rectangular shape in the longitudinal sectional view of the shaft-side cover 54, and the length of the outer peripheral portion 54 in the direction of the rotation axis so as to protrude outward from the end 54 d of the outer peripheral portion 54 c of the shaft-side cover 54. Is also formed in a long shape. The rotating member 57 is located at a position near the outer peripheral portion 54c between the mounting cylinder portion 63 and the outer peripheral portion 54c when viewed in the axial direction of the rotating shaft 42. The rotating member 57 is disposed in a state where a gap S is formed between the rotating member 57 and the outer peripheral portion 54c. The rotating member 57 is formed in a band plate shape when viewed in the direction along the axis of rotation of the shaft-side cover 54, and is positioned along the radial direction of the shaft-side cover 54.

  Accordingly, the dustproof means 60 surrounds the holder 50 and the connecting shaft portion 42a by the case side cover 53 and the shaft side cover 54, and rotates dust such as straw scraps generated inside the shredded case 40 by the rotating shaft 42. The rotating blades 58 that are operated are scattered on the outer peripheral side of the case side cover 53 and the shaft side cover 54, and further dust enters the cover inner space 56 through the gap between the outer peripheral portion 54 c of the shaft side cover 54 and the case side cover 53. In this case, the dust that has entered is moved to the dust discharge opening 55 by natural fall or by scraping by the rotating member 57 that is rotated by the rotating shaft 42 and discharged out of the cover from the dust discharge opening 55. The dust generated inside is prevented from adhering to and wrapping around the bearing 51 and the connecting shaft portion 42a of the rotating shaft 42. Since the outer peripheral portion 54c of the rotating shaft-side cover 54 enters the inside of the fixed case-side cover 53, it is difficult for the rotating cover 54 to entrap the waste scraps into the cover inner space 56.

  As shown in FIG. 17A, the dust discharge opening 55 provided in the case side cover 53 is a vertical line in which the center C of the dust discharge opening 55 in the rotation axis rotation direction A passes through the axis P of the rotation shaft 42. Arranged so as to be biased toward the lower side in the rotation direction of the rotation axis with respect to H, chopped straw and straw scraped by the cutter 47 and being lifted are made difficult to enter the dust discharge opening 55, and scraped by the rotating member 57 In response to this, the dust discharged from the dust opening 55 is made easier to come out rearward. The dust discharge opening 55 includes a part of the case-side cover 53 that is located slightly away from the vertical line H passing through the axis P of the rotation shaft 42 toward the upper side in the rotation axis rotation direction, and the lower side in the rotation axis rotation direction from this part. And the portion of the case side cover 53 located 90 degrees or approximately 90 degrees apart.

  The spring case 62 accommodates a pair of plate-shaped spring bodies 64, 64 that are disposed near the outside of the shaft-side cover 54 and are externally fitted to the rotary shaft 42.

  The pair of spring bodies 64, 64 are disposed between the mounting cylinder shaft 63 and the screw member constituting the connecting shaft portion 42 a, and are pressed against the washer member 65 via the mounting cylinder shaft 63 using the screw member as a reaction point. By acting, the cutters 47 and the spacers 66 positioned between the cutters are pressed toward the washer members 67 attached to the end of the rotating shaft 42 on the side to which the drive mechanism 44 is connected. Positioning is performed.

  As shown in FIGS. 16 and 18, a notch 58 a into which the spring case 62 enters is provided at the end of the rotary blade 58 on the side where the spring case 62 is located. The rotary blade 58 has a portion 58c of the end surface 58b that faces the notch 58a that is parallel to the rotation shaft 42 abuts on the outer peripheral surface 62a of the spring case 62, and the rotation shaft of the end surface 58b that faces the notch 58a. A portion 58 d intersecting with 42 is in contact with the side surface 62 b of the spring case 62 so that a gap is not formed so much between the rotary blade 58 and the spring case 62.

  FIG. 19 is a cross-sectional view showing the dustproof means 70 provided at the end of the rotating shaft 42 on the side to which the drive mechanism 44 is connected. As shown in the figure, the dust-proof means 70 includes a bowl-like case-side cover 73 fixed to the lateral wall 46 of the shredded case 40 in a state of being integrally formed with a holder 72 of a bearing 71, and a rotating blade on a rotating shaft 42. The shaft side cover 74 is supported by a plate 58 so as to be integrally rotatable. The outer peripheral portion 74 a of the shaft side cover 74 is located outside the case side cover 73 in a state of overlapping with the case side cover 73 in the radial direction of the rotation shaft 42.

[Another Example]
(1) In the above embodiment, the case side cover 53 formed in the bowl shape is shown. However, in addition to the bowl shape, a case side cover formed in an annular shape of various shapes such as a cylinder or a cone is adopted. May be implemented.

(2) Driving the rotary shaft 42 provided with the cutter 47 with the same dust-proof means as the dust-proof means 60 provided at the end of the rotary shaft 42 provided with the cutter 47 opposite to the side to which the drive mechanism 44 is connected. You may provide in the edge part by the side to which the mechanism 44 connects. Further, a dust-proof means having the same configuration as the dust-proof means 60 provided at the end of the rotary shaft 42 provided with the cutter 47 opposite to the side to which the drive mechanism 44 is connected is connected to one of the rotary shafts 43 provided with the supply body 48. You may provide in the edge part of this, or both ends.

(3) In the above-described embodiment, the example in which the outer peripheral portion 54c of the shaft-side cover 54 is positioned inside the case-side cover 53 in a state of being overlapped with the case-side cover 53 in the radial direction of the rotation shaft 42 is shown. A configuration may be adopted in which the outer peripheral portion 54 c of the shaft side cover 54 is positioned outside the case side cover 53 in a state where it is overlapped with the case side cover 53 in the radial direction of the rotary shaft 42.

(4) In the above-described embodiment, the dust discharge opening 55 of the case side cover 53 is connected to the vertical line H in which the center C of the dust discharge opening 55 in the rotation axis rotation direction A passes through the axis P of the rotation shaft 42. The example in which the rotation axis is arranged so as to be biased in the rotation direction A has been shown, but the configuration in which the center C of the dust discharge opening 55 in the rotation axis rotation direction is located on the vertical line passing through the axis P of the rotation shaft 42 or dust collection A configuration may be adopted in which the center C of the opening 55 in the rotation axis rotation direction A is deviated in a direction opposite to the rotation axis rotation direction A with respect to the vertical line H passing through the axis P of the rotation shaft 42. .

(5) In the above-described embodiment, the example in which the rotation member 57 provided in the cover inner space 56 is provided in the horizontal cover portion 54b of the shaft side cover 54 to rotate integrally with the rotation shaft 42 has been described. The rotating member 57 may be provided on the outer peripheral portion 54 c of the rotating shaft 42 or the shaft side cover 54.

(6) In the above-described embodiment, the example in which the rotation member 57 is formed so that the shape of the shaft-side cover 54 in the direction along the rotation axis of the shaft-side cover 54 is a strip shape is shown. You may form and implement.

(7) In the above-described embodiment, the example in which the rotating member 57 is provided in a posture along the radial direction of the shaft-side cover 54 has been described. However, the rotation member 57 may be provided in a posture inclined with respect to the radial direction of the shaft-side cover 54. .

(8) In the above-described embodiment, an example in which the strip-shaped rotating member 57 is employed has been described. However, the rotating member 57 is made of members having various shapes such as a rod such as a round bar or a square bar, a wire rod, or an angle member. May be adopted.

(9) In the above-described embodiment, an example in which only one rotating member 57 is provided is shown, but two or more rotating members 57 may be provided.

(10) In the above-described embodiment, an example in which the cutter 47 is provided on one of the pair of rotating shafts 42 and 43 and the supply body 48 is provided on the other side is shown. It may be adopted and implemented.

  INDUSTRIAL APPLICABILITY The present invention can be used for a draining shredder connected to a stationary threshing device in addition to a self-detaching combine threshing device.

DESCRIPTION OF SYMBOLS 5 Threshing apparatus 40 Shredding case 42,43 Rotating shaft 47 Cutter 48 Supply body 50 Holder 51 Bearing 53 Case side cover 54 Shaft side cover 54c Outer part of shaft side cover 55 Dust removal opening 56 Cover inner space 57 Rotating member 58 Rotating blade Plate 58a Notch 58b End face 62 Spring case 62a Outer peripheral surface of spring case 62b Side surface of spring case 64 Spring body A Rotating shaft rotation direction C Center of dust exhaust opening P Spindle shaft axis H Vertical line

Claims (5)

A plurality of cutters are arranged on one of a pair of rotating shafts supported in a shredder case so as to be driven to rotate freely, and are arranged in the axial direction of the rotating shaft so as to be integrally rotatable, and a plurality of cutters are supplied to the other of the pair of rotating shafts. A drainer shredding device configured to arrange a body in the axial direction of the rotary shaft so as to be integrally rotatable, and to shred the threshing drainer by the plurality of cutters,
A case-side cover fixed to the inner surface side of the shredded case in a state of being coaxially positioned with the rotary shaft around the outer periphery of a bearing holder that supports the rotary shaft, and an outer peripheral portion with respect to the case-side cover A shaft side cover that is coupled to the rotation shaft so as to rotate integrally with the rotation shaft in a state of overlapping in the radial direction of the rotation shaft and that rotates relative to the case side cover corresponds to one or both of the pair of rotation shafts. Set up,
Provided in the lower part of the case side cover is a dust exhaust opening for discharging dust from the cover inner space formed around the holder by the case side cover and the shaft side cover,
A drainer shredding device in which a rotating member that scrapes dust into the dust exhaust opening is disposed in the cover inner space so as to be rotatable integrally with the rotating shaft.   The dust discharge opening is arranged such that the center of the dust discharge opening in the rotation axis rotation direction is biased toward the lower side in the rotation axis rotation direction with respect to a vertical line passing through the axis of the rotation shaft. The waste straw shredding device described.   The shredded case is connected to the rear portion of the threshing device, and the pair of rotating shafts are provided in a state of being arranged in the front-rear direction of the threshing device, and the case side cover and the shaft side cover are threshing of the pair of rotating shafts. 3. The waste straw shredding device according to claim 2, which is provided so as to correspond to a rotating shaft on the rear side of the device. Near the outside of the shaft-side cover of the rotating shaft, a spring body is externally fitted in a state in which the spring body is pressed in the axial direction of the rotating shaft against the plurality of cutters or the plurality of supply bodies,
The exhaust wall shredding device according to any one of claims 1 to 3, wherein a spring case that houses the spring body is connected to the shaft-side cover so as to be integrally rotatable. A rotary vane disposed on the opposite side of the spring case from the side on which the shaft-side cover is located, provided on the outer peripheral side of the rotary shaft so as to be integrally rotatable with the rotary shaft;
Provide a notch portion into which the spring case enters the end of the rotary blade on the spring case side,
The drainer shredder according to claim 4, wherein the rotary blade plate is assembled in a state in which an end surface of the rotary blade plate facing the notch is in contact with an outer peripheral surface and a side surface of the spring case.

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