JP5291239B2 - Exhaust cutting device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a straw cutter furnished with a scraper which does not easily come off from a raking blade shaft and is reduced in abrasion due to contact with the raking blade shaft. <P>SOLUTION: The straw cutter includes a plurality of raking rotary blades 44 and a plurality of star wheels 45, which are axially disposed on the raking blade shaft 33; and a plurality of cutting rotary blades axially provided on the cutting blade shaft 34 at positions corresponding to the raking rotary blades. The straw cutter further includes: a scraper 60 having a base end part rotatably supported on the raking blade shaft and an extension portion extended from the base end part and rotatably supported on a scraper shaft 50 having an axial direction parallel to the raking blade shaft. An opening for supporting the base end part on the raking blade shaft and an opening for supporting the extension portion on the scraper shaft are formed of long holes. The extension portion is divided into a front extension portion and a rear extension portion, and base ends of the front extension portion and rear extension portion are pivotally connected to each other by the scraper shaft. <P>COPYRIGHT: (C)2013,JPO&amp;INPIT

Description

  The present invention relates to a waste cutting device mounted on a combiner or the like, and more particularly to a scraper technique for preventing the waste from being wound around a scraping blade shaft.

  2. Description of the Related Art Conventionally, a waste cutting device provided in a combiner, a harvester, or the like is provided with a cutting blade shaft parallel to a cutting blade shaft in the left-right direction so that the cutting blade shaft and the cutting blade shaft are parallel to each other. Each of the disk-shaped rotary blades is arranged at regular intervals, and the rotary blade of the scraping blade shaft and the rotary blade of the cutting blade shaft are arranged so as to overlap in a side view. Then, the waste is cut by the rotary blade by throwing the waste between the driven blade shaft and the cutting blade shaft which are driven to rotate. And the scraper blade axis | shaft of such a waste cutting device is equipped with the scraper which prevents winding of a waste. For example, in the scraper disclosed in Patent Document 1, an arc-shaped cutout recess is formed at one end, and the scraper is detachably fitted to the scraping blade shaft in the cutout recess. Yes. For this reason, the scraper is likely to be detached from the scraping blade axis as it is, and it is necessary to provide a restricting means for preventing the scraper from being detached from the scraping blade axis, resulting in a large number of parts and a complicated assembly process. It was. In addition, the notch recess of the scraper is likely to wear due to contact with the scraper blade shaft, and it is necessary to frequently replace it with a new scraper.

JP 2001-16965 A

  The present invention has been made in view of the above circumstances, and is a scraper that does not easily come off the scraping blade axis without providing complicated regulating means, and that has little wear due to contact with the scraping blade axis. It is an object of the present invention to provide a technique of a squeezing / cutting device provided.

  The problem to be solved by the present invention is as described above. Next, means for solving the problem will be described.

According to a first aspect of the present invention, there are provided a cutting blade shaft and a cutting blade shaft whose axial directions are parallel to each other in the front-rear direction and rotating in opposite directions, and are provided at appropriate intervals in the axial direction on the stirring blade shaft. In a waste cutting apparatus comprising a plurality of rotary cutting blades and a plurality of star wheels, and a plurality of cutting rotary blades provided in positions corresponding to the rotary rotary blades in the axial direction on the cutting blade axis, A base end portion that is rotatably supported by the scraping blade shaft, and an extension portion that extends from the base end portion and is rotatably supported by a scraper shaft that is parallel to the scraping blade shaft in an axial direction. The scraper has an extension portion divided into a front extension portion and a rear extension portion, and a base end portion of the scraper can be opened and closed by an elastic portion or opened and closed in a pivoted state by a pivot pin. The front side of the extension part of the scraper The protruding portion and the rear extending portion can be separated and opened so that the scraper blade shaft is loosely fitted, and an opening portion where the base end portion of the scraper is supported by the scraper blade shaft and the extension of the scraper An insertion hole in which the protruding portion is supported by the scraper shaft is formed by a long hole, and is provided at the end portion opposite to the front end portion of the extending portion of the scraper and the base end portion of the scraper of the rear extending portion. Further, the insertion hole is pivoted by the scraper shaft in an overlapping state .

  As effects of the present invention, the following effects can be obtained.

According to a first aspect of the present invention, there are provided a cutting blade shaft and a cutting blade shaft whose axial directions are parallel to each other in the front-rear direction and rotating in opposite directions, and are provided at appropriate intervals in the axial direction on the stirring blade shaft. In a waste cutting apparatus comprising a plurality of rotary cutting blades and a plurality of star wheels, and a plurality of cutting rotary blades provided in positions corresponding to the rotary rotary blades in the axial direction on the cutting blade axis, A base end portion that is rotatably supported by the scraping blade shaft, and an extension portion that extends from the base end portion and is rotatably supported by a scraper shaft that is parallel to the scraping blade shaft in an axial direction. The scraper has an extension portion divided into a front extension portion and a rear extension portion, and a base end portion of the scraper can be opened and closed by an elastic portion or opened and closed in a pivoted state by a pivot pin. The front side of the extension part of the scraper The protruding portion and the rear extending portion can be separated and opened so that the scraper blade shaft is loosely fitted, and an opening portion where the base end portion of the scraper is supported by the scraper blade shaft and the extension of the scraper An insertion hole in which the protruding portion is supported by the scraper shaft is formed by a long hole, and is provided at the end portion opposite to the front end portion of the extending portion of the scraper and the base end portion of the scraper of the rear extending portion. Further, since the insertion hole is pivotally connected by the scraper shaft in an overlapping state, the base end portion of the scraper is within a range in which the inner periphery of the elongated hole-shaped opening is in contact with the outer periphery of the driving blade shaft. It becomes possible to move.
For this reason, even when the cutting blade shaft is bent or shaken, the scraper is hardly pulled or contracted, and deterioration due to deformation of the scraper can be prevented.
Further, it is possible to reduce the friction generated between the inner periphery of the opening and the blade edge when the blade edge is rotated. For this reason, the opening part of a scraper is hard to wear, and deterioration by wear can be reduced.

Further, the extension part is divided into a front extension part and a rear extension part, and the base end part of the front extension part and the rear extension part is pivotally connected by a scraper shaft. It is possible to attach the scraper to the desired position of the scraper blade shaft without removing the scraper rotary blade or star wheel on the shaft and disassembling, and the scraper can be easily attached to and detached from the scraper blade shaft. It becomes possible.
Further, since the base end portion of the scraper is attached by loosely fitting the scraper blade shaft, the scraper is unlikely to come off from the scraper blade shaft.
That is, complicated restricting means (such as a link mechanism and an urging mechanism) for making it difficult to remove the scraper is not necessary, and the number of parts can be reduced.

It is a left view which shows the whole structure of the combine provided with the exclusion cutting device. It is a rear view which shows the structure of a waste cutting device. Similarly, it is a right side view. Similarly, it is a left side view. It is a left view which shows the structure of the scraper which concerns on a 1st structure form. It is a left view which shows the structure of the scraper and positioning shaft which concern on a 2nd structure form. It is a left view which shows the structure of the scraper which concerns on 1st embodiment, (a) is a closed state, (b) is a figure which shows an open state. It is a left view which shows the structure of the scraper which concerns on 2nd embodiment, (a) is a closed state, (b) is a figure which shows an open state.

  Next, embodiments of the invention will be described with reference to the accompanying drawings.

  Below, with reference to FIG. 1, the whole structure of the combine 1 provided with the waste cutting device 10 is demonstrated. In addition, in the following description, although the waste cutting apparatus 10 is demonstrated as what is equipped with the combine 1, this invention is not specifically limited to this, For example, you may equip with harvesting machines, such as a harvester. . In the following description, the direction of arrow A shown in FIG. 1 is defined as the traveling direction of the combine 1, that is, the front direction, and the front / rear and left / right directions are defined.

  As shown in FIG. 1, the combine 1 is configured such that a body frame 3 is disposed on a traveling unit 2 having a pair of left and right crawler traveling devices, and a cutting unit 4 is moved up and down via a cutting frame 5 at the front end of the body frame 3. Arranged as possible. A threshing unit 8 provided with a feed chain 7 is disposed immediately after the cereal conveyance mechanism 6 in the reaping unit 4, and a swing selection unit 9 is disposed immediately below the threshing unit 8. A cutting device 10 is arranged.

  A driving cabin 11 having a steering wheel for steering, a shift lever, a working lever, and the like is disposed at the front of the body frame 3 and on the right side in the traveling direction. Immediately after the operation cabin 11, a Glen tank 12 for storing the grains after threshing and sorting is arranged. A discharge auger 13 for carrying the stored grain out of the machine body is disposed at the rear of the Glen tank 12. In addition, an engine room 14 that houses an engine or the like that serves as a power source is disposed below the operation cabin 11.

  The cutting unit 4 includes a weeding body 15 disposed at the front end of the cutting frame 5, a cutting blade device 16 provided at the rear of the weeding body 15, a culm pulling device 17 provided above and behind the weeding body 15, and the like. The Then, the cutting unit 4 separates and takes in the cereal planted in the field by the weeding body 15, causes the culm pulling device 17, and harvests the stock of the cereal with the cutting blade device 16. Thereafter, the cereals are transferred to the cereal transport mechanism 6, and are transported backward by the cereal transport mechanism 6, and the stock is transferred to the feed chain 7 of the threshing unit 8.

  The threshing unit 8 includes a handling room 18 and a processing room 19. The handling chamber 18 is internally provided with a handling cylinder 20 that is pivotally supported in the front-rear direction. A receiving net 21 is stretched below the handling cylinder 20. The processing chamber 18 communicates with the front portion of the processing chamber 19 through a dust exhaust port disposed on the rear side, and the processing chamber 22 is provided with a processing cylinder 22 in the front-rear direction and cannot be processed by the processing cylinder 20. Reprocessed grains. A processing net 23 is stretched below the processing cylinder 22.

  On the side surface portion of the threshing upper surface cover that forms the handling chamber 18, there is provided a pinch (not shown) that holds the grain source side with the feed chain 7. Then, the tip side of the grain culm inherited from the grain culm transport mechanism 6 of the reaping part 4 is passed through the handling chamber 18 and threshing is performed with a plurality of teeth handling teeth (not shown) provided on the outer periphery of the barrel 20.

  The threshed and reprocessed grain passes through the receiving net 21 or the processing net 23 to reach the lower swing sorting unit 9, while the waste is conveyed to the rear waste cutting device 10.

  The swing sorting unit 9 includes a swing sorting device 24 that is supported so as to be swingable in the front-rear direction with the front end facing the lower side of the receiving net 21. The swing sorting device 24 is configured by a feed pan, a sorting sieve wire, a charsh sieve, a grain sieve, or the like. Below the feed pan, a red pepper for sending the sorting air is arranged, and the first conveyor is arranged at the lower front part of the swing sorting device 24, and the granule is refined to the Glen tank 12 through the first conveyor. To save. A second conveyor is disposed at the rear of the first conveyor, and the second item is returned to the front of the swing sorting device 24 via the second conveyor.

  Next, with reference to FIGS. 2-4, the whole structure of the exclusion cutting device 10 is demonstrated. The waste cutting apparatus 10 is an apparatus for finely cutting the waste after threshing and releasing it on the field scene. As shown in FIGS. 2 and 3, a switching cover 31 is disposed on the upper part between the left and right side plates 30, 30 of the waste cutting apparatus 10. A pivot shaft 32 fixed to both ends of the lower portion of the switching cover 31 is pivotally supported by the side plates 30 and 30, and an operation arm (not shown) is provided at one end of the pivot shaft 32. In this way, the switching cover 31 is rotated by the operation of the operation lever in the operation cabin 11 so that the cutting and non-cutting of the waste can be switched. In a state where the switching cover 31 is opened and the entrance of the waste cutting device 10 is opened, the waste is guided to the inside of the waste cutting device 10 for cutting. On the other hand, in a state where the switching cover 31 is closed and the entrance of the waste cutting device 10 is closed, the waste is sent to the rear of the combine 1 and released onto the field scene.

  As shown in FIG. 3, between the left and right side plates 30, 30, a scraping blade shaft 33 and a cutting blade shaft 34 are horizontally mounted in a horizontal direction via bearings. The scrambling blade shaft 33 is disposed above the cutting blade shaft 34 and in front of the cutting blade shaft 34, and the scrambling blade shaft 33 and the cutting blade shaft 34 are disposed in parallel to each other. Below the driving blade shaft 33 and the cutting blade shaft 34, a screw shaft 35 is provided in parallel therewith. The screw shaft 35 is horizontally supported between the side plates 30 and 30 via a bearing.

  As shown in FIG. 4, a sprocket 42 is fixed to the left end portion of the screw shaft 35. A drive sprocket 36 and an input pulley 37 are fixed to the left end portion of the cutting blade shaft 34. A large-diameter gear 38 is fixed to the left end portion of the driving blade shaft 33. A countershaft 39 parallel to the countershaft blade shaft 33 is provided below the take-up blade shaft 33, and a sprocket 40 and a small-diameter gear 41 are fixed to the left end portion of the countershaft 39. The small diameter gear 41 meshes with the large diameter gear 38. A chain 43 is wound between the drive sprocket 36, the sprocket 40, and the sprocket 42, and the cutting blade shaft 34 and the screw shaft 35 can be driven by transmitting power from the input pulley 37. Yes. Further, the rotation direction is reversed by the small-diameter gear 41 and the large-diameter gear 38, and the scraping blade shaft 33 is driven at a low speed in the direction opposite to the cutting blade shaft 34.

  As shown in FIG. 2, rotary blades for excision cutting are respectively fixed to the blade edge shaft 33 and the cutting blade shaft 34. A plurality of disk-shaped scraping rotary blades 44 and star wheels 45 are alternately fixed on the scraper blade shaft 33 at regular intervals. A plurality of large-diameter cutting rotary blades 46, small-diameter cutting rotary blades 47, and star wheels 48 are fixed on the cutting blade shaft 34, and the star wheels 48 are connected to the large-diameter cutting rotary blade 46 and the small-diameter cutting rotary blade 47. One piece is fixed between each other or between the small-diameter cutting rotary blades 47.

  A scraper 60 is provided between the stirrer rotary blade 44 and the star wheel 45 at a predetermined position on the stirrer blade shaft 33 to prevent the waste from being wound around and attached to the stirrer blade shaft 33. . The configuration of the scraper 60 will be described in detail later. In this configuration, a plurality of scrapers 60 are disposed between the stirrer rotary blade 44 and the star wheel 45 on the stock base side where the waste is likely to be clogged, but can also be disposed on the tip side. It is.

  A small-diameter screw 28 is fixed on the stock base side, and a large-diameter screw 29 is fixed on the tip side of the screw shaft 35 with a substantially central position in the left-right direction as a boundary. The small diameter screw 28 and the large diameter screw 29 are wound in opposite directions. Then, by rotating the screw shaft 35, the small diameter screw 28 diffuses while conveying the cutting edge on the stock side to the left side and the large diameter screw 29 conveys the cutting edge on the tip side to the right side. It is configured so that it can diffuse widely and uniformly.

  In this way, the cutting rod cut by the scraping rotary blade 44, the large-diameter cutting rotary blade 46, and the small-diameter cutting rotary blade 47 and falling downward is diffused to the left and right by the rotation of the screw shaft 35 and on the field scene. It is released.

  Moreover, the waste cutting apparatus 10 is provided with a long / short switching mechanism for the waste cutting length. As shown in FIG. 4, the multi-arms 49 and 49 are members that rotatably support both ends of the scraping blade shaft 33 and are provided inside the left and right side plates 30 and 30. The lower portion of the left multi-arm 49 is rotatably supported by the counter shaft 39, and the lower portion of the right multi-arm 49 is rotatably supported by a support shaft (not shown) located on the concentric axis with the counter shaft 39. Is done. Between the upper parts of the left and right multi-arms 49, 49, a scraping blade shaft 33 is rotatably supported.

  The upper parts of the multi-arms 49 and 49 are connected to the lower parts of the rotating arms 51 and 51 via the raking blade shaft 33. That is, the upper part of the multi-arms 49 and 49 and the lower part of the rotating arms 51 and 51 are pivotally supported by the scraping blade shaft 33, and the scraping blade shaft 33 from the openings 52 and 52 formed in the left and right side plates 30 and 30. Both ends of the Thus, the scraper blade shaft 33 supported at both ends by the multi-arms 49 and 49 is moved in conjunction with the rotating arms 51 and 51. A connecting pipe 53 is placed horizontally between the upper parts of the left and right rotating arms 51, 51, and an arm shaft 54 is slidably fitted into the connecting pipe 53.

  As shown in FIG. 4, the left side plate 30 provided with the exclusion cutting length switching lever 55 has a substantially bowl-shaped shape formed by a hole for determining the position of the long and short and a long hole connecting the holes. A locking portion 56 is formed. Further, as shown in FIG. 3, the right side plate 30 is formed with insertion holes 57 and 57 that serve as locking portions at the right end of the arm shaft 54 in accordance with the long and short switching positions.

  As shown in FIG. 4, a midway portion of the exclusion cutting length switching lever 55 is pivotally supported at the left end portion of the arm shaft 54 protruding outward from the locking portion 56 of the left side plate 30. As shown in FIG. 3, the right end portion of the arm shaft 54 is engaged with and fixed to the insertion hole 57 of the right side plate 30.

  In such a configuration, the arm shaft 54 is moved by rotating the exclusion cutting length switching lever 55, and the rotating arm 51 fixed to the arm shaft 54 is displaced in conjunction with this (FIG. 2). (See FIG. 4), the multi-arm 49 connected to the rotating arm 51 rotates around the counter shaft 39 (see FIG. 4), and the scraper blade shaft 33 supported by the multi-arm 49 is changed to either the long or short position. It can be done. When the long and short positions are determined, the right end portion of the arm shaft 54 is engaged and locked with the insertion hole 57 by the operation of the exclusion cutting length switching lever 55 (see FIG. 3), and the switching of the cutting length is completed.

  When cutting the waste into a short length, the distance between the scraping blade shaft 33 and the cutting blade shaft 34 is reduced. Thereby, the scraping rotary blade 44 and the large-diameter cutting rotary blade 46 and the small-diameter cutting rotary blade 47 overlap with each other in a side view of the waste cutting apparatus 10. The excretion is cut at intervals. When cutting the waste into a long length, the distance between the scraping blade shaft 33 and the cutting blade shaft 34 is separated. As a result, the scraping rotary blade 44 and the large-diameter cutting rotary blade 46 overlap each other and the scraping rotary blade 44 and the small-diameter cutting rotary blade 47 do not overlap each other in a side view of the waste cutting apparatus 10. The waste is cut at intervals of the diameter cutting rotary blade 46.

  Next, the configuration of the scraper 60, which is a member that functions to prevent the winding blade shaft 33 from being wound and attached to the scraper blade shaft 33, will be described in detail with reference to FIGS.

  As shown in FIG. 5, the scraper 60 is a plate-like member made of a resin such as 6-nylon. The left-right width (thickness) of the scraper 60 is configured to be slightly smaller than the distance between the peripheral edge of the adjacent rotary blade 44 and the peripheral edge of the star wheel 45 on the automatic blade shaft 33. The The scraper 60 is sufficiently extended to the outer side of the stirring rotary blade 44 from the base end portion 61 and the base end portion 61 loosely fitted to the driving blade shaft 33 via the cylindrical portion of the star wheel 45. It has a shape having an extending portion 62. In the scraper 60 in this configuration, the base end portion 61 and the extending portion 62 are configured integrally.

  An opening 63 having a long hole shape is formed at the center of the base end portion 61, and the scraper blade shaft 33 is loosely fitted in the opening 63.

  As shown in FIG. 2, the plurality of scrapers 60, 60... Are respectively provided in the gaps between the scraping rotary blade 44 and the star wheel 45 on the scraping blade shaft 33. 45 is slidably in contact with 45. The length in the radial direction on the rear side (the cutting blade shaft 34 side) of the scraper 60 is configured to be shorter than the radius of the scraping rotary blade 44.

  In such a configuration, a gap between the scraping rotary blade 44 and the star wheel 45 is filled with the scraper 60. Therefore, it is difficult for the waste to enter the gap between the rotary rotary blade 44 and the star wheel 45 and the waste blade is wound around the scraper blade shaft 33, and the waste is wound around the portion one after another and cannot be removed. Can be prevented. Further, since the length in the radial direction on the front side (on the side opposite to the cutting blade shaft 34) of the scraper 60 is configured to be longer than the radius of the scraping rotary blade 44, the scraper can be used even with a relatively long waste. It is difficult to wind around the outer periphery of 60. Further, in such a configuration, when the maintenance is performed with the front cover of the severing and cutting device 10 removed, it becomes difficult for the operator to touch the take-in rotary blade 44 and the operation can be performed safely.

  Furthermore, since the scraper 60 is made of a resin such as 6-nylon, the scraper 60 is slidable and the waste is hardly attached to the scraper 60. Further, since resin such as 6-nylon has water repellency, even if mud or water adheres to the waste, the sliding property of the scraper 60 is not impaired.

  The scraper 60 is made of a resin such as 6-nylon, but is not limited to this. In other words, any material may be used as long as it is made of a material that is difficult to wind around, and for example, it may be made of polyethylene or polypropylene.

  As shown in FIG. 2, one end of the scraper 60 is connected to the scraper shaft 50 provided in the horizontal direction at a constant interval (interval that can be disposed in the gap between the scraping rotary blade 44 and the star wheel 45). . More specifically, as shown in FIG. 5, the scraper 60 is inserted into the scraper shaft 50 by loosely inserting an insertion hole 62 h that is an elongated hole provided at one end of the extending portion 62. Is supported in a freely rotatable manner. As shown in FIG. 2, both ends of the scraper shaft 50 are supported by a scraper seat 58, and the scraper seat 58 is fixed to an attachment seat 59 fixed to the connection pipe 53. In this way, the scraper 60 is attached to the connecting pipe 53 via the scraper shaft 50, the scraper seat 58 and the attachment seat 59.

  In addition, although the insertion hole 62h which is an opening part of the said extension part 62 shall be formed in a long hole shape, it does not specifically limit to this, For example, a round hole shape may be sufficient. In other words, any configuration may be used as long as the scraper 60 is fitted to the scraper shaft 50 in a state having play.

  Here, since the connecting pipe 53 is moved together with the arm shaft 54 when switching the excavation cutting length, the distance between the connecting pipe 53 and the scraping blade shaft 33 does not vary. That is, in such a configuration, there is no fear that the scraper 60 is pulled or shrunk in the front-rear direction even when the excavation cutting length is switched, and deterioration due to deformation of the scraper 60 can be prevented. it can.

  The scraper shaft 50 loosely fitted in the insertion hole 62h of the extending portion 62 is connected to the connection pipe 53 via the scraper seat 58 and the mounting seat 59. However, the present invention is not limited to this. It may be configured to be attached to the location. That is, the scraper shaft 50 may be provided at a location that is provided in parallel with the axial direction of the scraper blade shaft 33 and can be loosely fitted into the insertion hole 62 h of the extending portion 62 of the scraper 60.

  As shown in FIG. 5, the opening part 63 of the base end part 61 is formed in a long hole shape. For this reason, the scraper 60 is attached to the scraping blade shaft 33 at the opening 63 with play. With such a configuration, the base end 61 of the scraper 60 has the inner periphery of the long hole-shaped opening 63 as the outer periphery of the scraper blade shaft 33 with the connecting portion (the insertion hole 62h) with the scraper shaft 50 as a fulcrum. It is possible to move within the range where it contacts. For this reason, even when a large amount of waste is sent between the cutting blade shaft 33 and the cutting blade shaft 34 and the bending blade shaft 33 bends, the scraper 60 is driven by the cutting blade shaft 33 (more Strictly speaking, it is possible to move so as to escape in the direction opposite to the side in contact with the cylindrical portion of the star wheel 45). That is, even when the scraper blade shaft 33 is bent or shaken, the scraper 60 is hardly pulled or contracted, and deterioration due to deformation of the scraper 60 can be prevented. From the viewpoint of effectively preventing the scraper 60 from being deformed when the scraping blade shaft 33 is bent, the opening 63 has a large amount of waste between the scraping blade shaft 33 and the cutting blade shaft 34. It is desirable to form in the shape of a long hole whose longitudinal direction is the direction in which the scissor blade shaft 33 bends when the scissors are sent.

  Further, in such a configuration, since the area of the portion where the inner periphery of the opening 63 and the outer periphery of the scraper blade shaft 33 are in close contact with each other is small, when the scraper blade shaft 33 is rotated, Friction generated between the circumference and the outer circumference of the cutting blade shaft 33 can be reduced. For this reason, the opening 63 of the scraper 60 is not easily worn, and deterioration due to wear can be reduced. As a result, it is possible to reduce the replacement frequency of the deteriorated scraper 60 with a new scraper 60.

  In addition, although the opening part 63 of the said base end part 61 shall be formed in a long hole shape, it does not specifically limit to this, For example, you may be a round hole shape. In other words, any configuration may be used as long as the scraper 60 is fitted to the scraper blade shaft 33 in a state having play.

  Moreover, in the waste cutting device 10 which concerns on a 1st structure form, the scraper 60 shall be provided in the range corresponded to the stockholder side of the waste, among the full length of the picking blade axis | shaft 33. FIG. This is because the stocker side of the waste is thicker and has a higher moisture content than the tip side, so that it is easy to wind around the scraper blade shaft 33. However, the present invention is not limited to this, and a scraper may be provided over the entire length of the blade edge.

  Below, the structure of the exclusion cutting device 10 which concerns on a 2nd structure form is demonstrated with reference to FIG. The waste cutting apparatus 10 according to the second configuration form is different from the waste cutting apparatus 10 according to the first configuration form in that it includes a positioning shaft 64. Below, the same code | symbol is attached | subjected to the member of the structure substantially the same as the waste cutting device 10, and description is abbreviate | omitted.

  The positioning shaft 64 limits the movement range of the scraper 60. The positioning shaft 64 is provided in a horizontal direction (parallel to the axial direction) at a position where the positioning shaft 64 can come into contact with the extending portion 62 of the scraper 60. Both ends of the positioning shaft 64 are fixed to the left and right side plates 30.

  In addition, an engagement recess 65 is formed in a portion that contacts the positioning shaft 64 on the outer periphery of the extension portion 62. In the scraper 60 according to the present embodiment, an engagement recess 65 is formed in the rear upper part of the extension part 62.

  Thus, the range in which the extended portion 62 of the scraper 60 can move is limited by the contact of the inner periphery of the insertion hole 62 h with the outer periphery of the scraper shaft 50 and the contact of the engaging recess 65 with the positioning shaft 64. . In this case, the area of the opening 63 of the base end portion 61 can be designed to be larger than that of the scraper 60 according to the first embodiment. This is because the position of the scraper 60 is limited within a desired range without depending on the contact of the inner periphery of the opening 63 with the outer periphery of the scraper blade shaft 33 (the outer periphery of the cylindrical portion of the star wheel 45).

  With such a configuration, even when a large amount of waste is sent between the scoring blade shaft 33 and the cutting blade shaft 34 and a relatively large deflection occurs in the scrambling blade shaft 33, The distance from the center to the connecting portion (insertion hole 62h) with the scraper shaft 50 is kept constant. In other words, even when the scraper blade shaft 33 is bent or shakes relatively large, the inner periphery of the opening 63 is pushed by the scraper blade shaft 33 (cylindrical portion of the star wheel 45), and the scraper 60. Is unlikely to be pulled or shrunk, and deterioration due to deformation of the scraper 60 can be prevented.

  Moreover, in such a structure, since the area of the part which the inner periphery of the opening part 63 and the outer periphery (periphery of the cylindrical part of the star wheel 45) of the stir blade shaft 33 are in close contact is small, a stir blade axis Friction generated between the inner periphery of the opening 63 and the outer periphery of the scraper blade shaft 33 when the 33 is rotated can be reduced. For this reason, the opening 63 of the scraper 60 is not easily worn, and deterioration due to wear can be reduced. As a result, it is possible to reduce the replacement frequency of the deteriorated scraper 60 with a new scraper 60. Furthermore, it is possible to prevent the power of the sewage cutting device 10 from being reduced due to friction generated between the inner periphery of the opening 63 and the outer periphery of the stir blade shaft 33 (the outer periphery of the star wheel 45). .

  Below, the structure of the exclusion cutting apparatus 10 which concerns on 1st embodiment of this invention is demonstrated with reference to FIG. The scraper 70 provided in the waste cutting apparatus 10 according to the present embodiment is configured such that the extending portion 72 can be divided into a front extending portion 72A and a rear extending portion 72B with the base end portion 71 interposed therebetween. Thus, it is mainly different from the scraper 60 provided in the waste cutting apparatus 10 according to the first configuration form. Below, the same code | symbol is attached | subjected to the member of the structure substantially the same as the waste cutting device 10, and description is abbreviate | omitted.

  Similar to the scraper 60, the scraper 70 is a plate-like member made of a resin such as 6-nylon, and has a hollow opening at the center. The left-right width (thickness) of the scraper 70 is configured to be slightly smaller than the distance between the peripheral edge of the adjacent rotary blade 44 and the peripheral edge of the star wheel 45 on the automatic blade shaft 33. The

  As shown in FIG. 7A, in the state where the scraper 70 is attached to the waste cutting device 10, the scraper 70 is loosely fitted to the scraper blade shaft 33, and from the proximal end portion 71. It has a shape having an extending portion 72 that extends sufficiently to the outside of the take-in rotary blade 44. In the scraper 70 in the present embodiment, the base end portion 71 and the extending portion 72 are configured integrally.

  At one end of the extension part 72, an overlapping part 76 is formed in which a part of the front extension part 72 </ b> A and a part of the rear extension part 72 </ b> B overlap each other in a side view. In this state, the insertion hole 72Ah and the insertion hole 72Bh coincide with each other in a side view (hereinafter, the state in which the insertion hole 72Ah and the insertion hole 72Bh coincide with each other is referred to as a closed state).

  The base end portion 71 is made of an elastic member, and as shown in FIG. 7B, the scraper 70 is centered on the base end portion 71 and the extension portion 72 is extended to the front side with the overlapping portion 76 as an opening / closing portion. The part 72A and the rear extension part 72B can be divided and opened (hereinafter, the state of being divided and opened by the front extension part 72A and the rear extension part 72B is referred to as an open state). An opening 73 having an elongated hole shape is formed at the center of the base end portion 71 in the closed state, and the scraper blade shaft 33 is loosely fitted therein.

  In this manner, the scraper blade 70 is loosely fitted into the opening 73 in the closed state, and then the insertion hole 72Bh and the insertion hole 72Ah are loosely fitted to the scraper shaft 50, whereby the scraper 70 is attached to the waste cutting apparatus 10. Is possible.

  In such a configuration, the scraper 70 is changed from the closed state to the open state, and the scraper blade shaft 33 is inserted into the central portion with the front extension portion 72A and the rear extension portion 72B positioned on both sides. After the scraper blade shaft 33 is inserted to the opening 73 of the base end portion 71, the scraper 70 is returned from the open state to the closed state again, whereby the base end portion 71 of the scraper 70 is loosely fitted to the scraper blade shaft 33. Is possible. That is, the scraper 70 can be attached to a desired position of the scraping blade shaft 33 without removing the scraping rotary blade 44, the star wheel 45, etc. on the scraping blade shaft 33. Therefore, the scraper 70 can be easily attached to and detached from the scraper blade shaft 33, and the work load when the deteriorated scraper 70 is replaced with a new scraper 70 is reduced.

  Further, since the extending portion 72 of the scraper 70 is sufficiently extended from the base end portion 71 to the outer side of the scraping rotary blade 44, the overlapping portion 76 is opened and closed when the scraper 70 is attached and detached. Even in this case, the operator can safely perform the operation without touching the scraping rotary blade 44.

  Furthermore, in such a configuration, since the opening 73 is loosely fitted to and attached to the scraping blade shaft 33, the scraper 70 is difficult to come off from the scraping blade shaft 33. That is, although the scraper 70 is detachable, the conventional complicated restricting means (link mechanism or biasing mechanism) for pressing the scraper 70 against the scraping blade shaft 33 so as not to come off the scraping blade shaft 33. Etc.) becomes unnecessary. As a result, the number of parts can be reduced and the cost can be reduced, and the assembly process of the reject cutting apparatus 10 can be simplified.

  In addition, also in the waste cutting apparatus 10 of this embodiment, the same positioning shaft 64 as the waste cutting apparatus 10 according to the first configuration is provided, and the positioning shaft 64 can be brought into contact with the extending portion 72 of the scraper 70. It is also possible to adopt a configuration in which a simple engaging recess is formed.

  Below, the structure of the exclusion cutting device 10 which concerns on 2nd embodiment of this invention is demonstrated with reference to FIG. The scraper 80 provided in the waste cutting apparatus 10 according to the present embodiment is configured integrally with the front extension portion 82A and the front portion 81A of the base end portion 81 as one member, and the rear extension portion 82B and the base It differs from the scraper 70 of the waste cutting apparatus 10 according to the second configuration in that the rear portion 81B of the end portion 81 is integrally configured as another member and both are rotatably connected to each other. To do. Below, the same code | symbol is attached | subjected to the member of the structure substantially the same as the waste cutting apparatus 10 which concerns on a 2nd structure form, and description is abbreviate | omitted.

  As shown in FIG. 8 (a), the scraper 80, when attached to the waste cutting apparatus 10, is a base end 81 that is loosely fitted to the scraper blade shaft 33, and is scraped from the base end 81. It has a shape having an extending portion 82 that extends sufficiently to the outer position of the rotary blade 44.

  The base end portion 81 is configured to be divided into a front portion 81A and a rear portion 81B. The front extending portion 82A and the front portion 81A of the base end portion 81 are integrally configured as one member. On the other hand, the rear extension portion 82B and the rear portion 81B of the base end portion 81 are integrally configured as another member. Both of these are made of a resin such as 6-nylon.

  At one end of the extension portion 82, an overlapping portion 86 is formed in which a part of the front extension portion 82 </ b> A and a part of the rear extension portion 82 </ b> B are overlapped and overlapped in plan view. In this state, the insertion hole 82Ah and the insertion hole 82Bh coincide with each other in a side view (hereinafter, the state in which the insertion hole 82Ah and the insertion hole 82Bh coincide with each other is referred to as a closed state).

  At one end of the base end portion 81, an overlapping portion 87 is formed in which a part of the front portion 81A and a portion of the rear portion 81B of the base end portion 81 are overlapped and overlapped in a side view. The front part 81A and the rear part 81B are pivotally supported by a fulcrum pin 88 as a fulcrum shaft. As shown in FIG. 8B, the scraper 80 is centered on a fulcrum pin 88 serving as a fulcrum shaft, with the overlapping portion 86 serving as an opening / closing portion and an extending portion 82 sandwiched between the base end portion 81 and a front extending portion 82A. And the rear extension portion 82B can be divided and opened (hereinafter, the state where the front extension portion 82A and the rear extension portion 82B are divided and opened is referred to as an open state). In the central portion of the base end portion 81 in the closed state, that is, a portion surrounded by the front portion 81A and the rear portion 81B, an opening portion 83 opened in a long hole shape is formed. Is to be loosely fitted.

  In this way, after the scraper blade shaft 33 is loosely fitted into the opening 83, the scraper 80 is attached to the waste cutting apparatus 10 by loosely fitting the insertion hole 82Ah and the insertion hole 82Bh in the closed state to the scraper shaft 50. Is possible.

  In such a configuration, the scraper 80 is changed from the closed state to the open state, and the scraper blade shaft 33 is inserted into the center portion with the front extension portion 82A and the rear extension portion 82B positioned on both sides. After the scraper blade shaft 33 is inserted to the opening 83 of the base end portion 81, the scraper 80 is returned from the open state to the closed state again, so that the base end portion 81 of the scraper 80 is loosely fitted to the scraper blade shaft 33. Is possible. That is, the scraper 80 can be attached to a desired position of the scraping blade shaft 33 without removing the scraping rotary blade 44, the star wheel 45, etc. on the scraping blade shaft 33. Therefore, the scraper 80 can be easily attached to and detached from the scraping blade shaft 33, and the work load when the deteriorated scraper 80 is replaced with a new scraper 80 is reduced.

  Further, since the extending portion 82 of the scraper 80 is sufficiently extended from the base end portion 81 to the outer side of the scraping rotary blade 44, the overlapping portion 86 is opened and closed when the scraper 80 is attached and detached. In this case, the operator can operate safely without touching the scraping rotary blade 44.

  Further, in such a configuration, since the opening 83 is loosely fitted to and attached to the scraping blade shaft 33, the scraper 80 is unlikely to come off the scraping blade shaft 33. That is, even though the scraper 80 is detachable, the conventional complicated restricting means (link mechanism or biasing mechanism) for pressing the scraper 80 against the scraping blade shaft 33 so as not to come off the scraping blade shaft 33. Etc.) becomes unnecessary. As a result, the number of parts can be reduced and the cost can be reduced, and the assembly process of the reject cutting apparatus 10 can be simplified.

  Note that, also in the waste cutting apparatus 10 of the present embodiment, a positioning shaft similar to that of the waste cutting apparatus 10 according to the first configuration is provided, and the extension 82 of the scraper 80 can be brought into contact with the positioning shaft. It is also possible to adopt a configuration in which a concavity is formed.

  As described above, the waste cutting apparatus 10 according to the first configuration form includes the scrambling blade shaft 33 and the cutting blade shaft 34 whose axial directions are parallel to each other and rotating in opposite directions, and the scrambling blade shaft. A plurality of scraping rotary blades 44 and a plurality of star wheels 45 provided at appropriate intervals in the axial direction on 33, and a position corresponding to the scraping rotary blade 44 in the axial direction on the cutting blade shaft 34. In the waste cutting apparatus 10 including a plurality of cutting rotary blades (a large-diameter cutting rotary blade 46 and a small-diameter cutting rotary blade 47) provided, a base end portion 61 that is rotatably supported by the stirring blade shaft 33; A scraper 60 having an extending portion 62 that extends from the base end portion 61 and is rotatably supported by a scraper shaft 50 that is parallel to the scraper blade shaft 33 in the axial direction is provided. Supported by the take-up blade shaft 33 An insertion hole 62h as openings for because of the opening 63 and the extending portion 62, is supported on the scraper shaft 50, which is constituted by the long hole. Therefore, the base end portion 61 of the scraper 60 can move within a range in which the inner periphery of the long hole-shaped opening 63 contacts the outer periphery of the scribing blade shaft 33. For this reason, even when the cutting blade shaft 33 is bent or shaken, the scraper 60 is hardly pulled or contracted, and deterioration due to deformation of the scraper 60 can be prevented. Further, it is possible to reduce the friction generated between the inner periphery of the opening 63 and the scraper blade shaft 33 when the scraper blade shaft 33 is rotated. For this reason, the opening 63 of the scraper 60 is not easily worn, and deterioration due to wear can be reduced.

  In addition, the reject cutting apparatus 10 according to the second configuration form is provided with a positioning shaft 64 in the vicinity of the extending portion 62 and parallel to the axial direction of the scraping blade shaft 33, and the positioning shaft is provided on the extending portion 62. The engagement recess 65 is formed so as to be able to come into contact with 64. Accordingly, it is possible to design the area of the opening 63 of the base end portion 61 to be larger than that in the first configuration form. For this reason, even when the scraping blade shaft 33 is bent or shakes relatively large, the scraper 60 is hardly pulled or contracted, and deterioration due to deformation of the scraper 60 can be prevented.

  Further, in the rejection cutting apparatus 10 according to the first embodiment of the present invention, the extension 82 is divided into a front extension 82A and a rear extension 82B, and the front extension 82A and the rear The base end portion 83 of the side extending portion 82B is pivoted by a fulcrum shaft 88. Accordingly, the scraper 80 can be attached to a desired position of the scraper blade shaft 33 without removing the scraper rotary blade 44, the star wheel 45, etc. on the scraper blade shaft 33 and disassembling. It can be easily attached to and detached from the insert blade shaft 33. In addition, since the scraper 80 is attached by loosely fitting the base end portion 81 to the scraping blade shaft 33, the scraper 80 is unlikely to come off the scraping blade shaft 33. That is, the conventional complicated restricting means (link mechanism, urging mechanism, etc.) for making it difficult to remove the scraper 80 becomes unnecessary, and the number of parts can be reduced.

  It should be noted that the technical scope of the present invention is not limited to the above-described embodiments, but covers the entire scope of the technical idea that the present invention truly intends, as will be apparent from the matters described in the present specification and drawings. It is a wide range.

DESCRIPTION OF SYMBOLS 1 Combine 10 Exhaust cutting device 33 Knife blade axis 34 Cutting blade axis 35 Screw shaft 44 Knife rotary blade 45 Starfoil 46 Large diameter cutting rotary blade (cutting rotary blade)
47 Small-diameter cutting rotary blade (cutting rotary blade)
48 Starwheel 50 Scraper shaft 60 Scraper 61 Base end 62 Extension 62h Insertion hole (opening)
63 Opening portion 64 Positioning shaft 65 Engaging recess 82 Extension portion 82A Front extension portion 82B Rear extension portion 88 Support point pin (fulcrum shaft)

Claims (1)

A scraper blade shaft and a cutting blade shaft whose axial directions are parallel to each other and rotating in opposite directions, and a plurality of scraping rotary blades provided at appropriate intervals in the axial direction on the scraper blade shaft And a plurality of starwheels and a plurality of cutting rotary blades provided at positions corresponding to the scraping rotary blades in the axial direction on the cutting blade shafts. A scraper having a base end portion rotatably supported and an extension portion extending from the base end portion and rotatably supported by a scraper shaft having an axial direction parallel to the scraper blade shaft; The extending portion of the scraper is divided into a front extending portion and a rear extending portion, and a base end portion of the scraper can be opened and closed by an elastic portion or can be opened and closed in a pivoted state by a pivot pin. A front extension part and a rear extension part of the extension part; The scraper blade shaft can be split open so that it can be loosely fitted, and the opening portion of the scraper base end supported by the scraper blade shaft and the extension portion of the scraper are supported by the scraper shaft. The insertion hole is configured by a long hole, and the insertion hole provided in the end opposite to the front end of the extension portion of the scraper and the base end portion of the scraper of the rear extension portion is overlapped. And a severing and cutting device characterized by being pivotally connected by the scraper shaft .

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