JP2015035984A - Ordinary type combine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an ordinary type combine which can avoid that transportation processed products are adhered and accumulated at an external peripheral side of a drive shaft of a feeder.SOLUTION: A feeder for transporting reaped grain culms which are reaped by a reaper at a front part of a machine body to the backside of the machine body is constituted by comprising; a horizontal drive shaft 38 which is laid in a cylindrical feeder case 37; a pair of drive wheel bodies 39 which are arranged at the drive shaft 38 in the axial core direction with an interval; a driven wheel body 41 arranged at a horizontal driven shaft 40 which is laid in the feeder case 37; and a pair of endless turning bodies 42 which are wound around these items: The feeder also comprises a pair of boss members 74 which are relatively and rotatably supported to the drive shaft 38 at points adjacent to lateral middle sides of a pair of the drive wheel bodies 39, and a cylindrical winding prevention cover 75 which is supported over the pair of the boss members 74 in a state of being externally fit to the drive shaft 38. The boss members 74 are connected to a fixed member 78 which is supported to the feeder case 37.

Description

  The present invention relates to a normal combine configured to convey a harvested cereal harvested at the front of the machine body to the rear of the machine body using a feeder.

  The feeder in the ordinary combine is provided with a pair of drive wheels in the cylindrical feeder case, with a lateral drive shaft located on the rear side of the machine body spaced apart in the axial direction, and located on the front side of the machine body. And a pair of left and right endless rotating bodies are wound around each driving wheel body and the driven wheel body, and a plurality of lateral conveying members are installed over the pair of endless rotating bodies. It becomes the composition which is done.

  In this type of ordinary combine, conventionally, a slightly smaller diameter than the maximum diameter of the drive wheel body is provided in the middle portion in the axial direction between a pair of drive wheel bodies provided with a space in the axial direction on the drive shaft. In addition, a cylindrical body having a diameter larger than that of the drive shaft is provided (for example, see Patent Document 1).

JP 2012-210164 A

  However, in the above-described conventional configuration, the cylindrical body positioned in the middle portion in the axial direction between the pair of driving wheel bodies rotates integrally with the driving wheel bodies.

  As a result, for example, when a transported product with a lot of moisture adheres to the surface of the cylinder, there is a risk that the amount of the transported product deposited and deposited on the outer peripheral surface of the cylinder increases as the cylinder rotates. If a large amount of processed material adheres and accumulates on the outer periphery of the cylindrical body in this way, the rotation operation of the drive wheel body also hinders the conveyance clogging, and the conveyed processed material cannot be properly conveyed. There was a risk of becoming something.

  Therefore, it has been desired to prevent the conveyance processed material from being deposited on the outer peripheral side of the feeder drive shaft.

The characteristic configuration of the ordinary combine according to the present invention is provided with a feeder that conveys the harvested cereals harvested by the harvesting part at the front of the aircraft toward the rear of the aircraft,
The feeder is
A cylindrical feeder case for transferring cereals, a lateral drive shaft installed inside the feeder case, to which power is transmitted, and a pair of drives provided at intervals in the axial direction of the drive shaft A ring body, a laterally driven shaft erected on the feeder case, a driven wheel body provided on the driven shaft, the drive wheel body and the driven wheel body, and wound in the axial direction A pair of endless rotating bodies provided at intervals, and a plurality of conveying members that are installed horizontally across the pair of endless rotating bodies, and
A pair of boss members that are positioned on the drive shaft adjacent to the intermediate side in the lateral direction of the pair of drive wheel bodies and are supported by the feeder case so as to be relatively rotatable with respect to the drive shaft, A cylindrical wrapping prevention cover supported across the pair of boss members in the inserted state,
The boss member is connected to a fixing member supported by the feeder case.

  According to the present invention, the boss member is provided on the drive shaft at a position adjacent to the intermediate side in the lateral direction of each of the pair of drive wheel bodies of the drive shaft so as to be relatively rotatable on the drive shaft, and is supported over the pair of boss members. An anti-winding cover is provided. Since the boss member is supported by the feeder case, even if power is transmitted and the drive shaft rotates, the boss member is supported in a fixed position without rotating. In addition, since the wrapping prevention cover is supported across the pair of boss members in a fixed position, the wrapping prevention cover does not rotate.

  As a result, even if the driving wheel body rotates, the boss member adjacent to the intermediate side in the lateral direction of each driving wheel body does not rotate, so that the conveyed product adheres and accumulates on the outer peripheral side of the feeder drive shaft. You can avoid that. In addition, since the anti-winding cover is provided at the intermediate portion in the axial direction between the pair of drive wheels, it is possible to avoid the adhesion and deposition of the conveyance processed product on the drive shaft, and the anti-winding cover. Even if it adheres a little to the surface, such a conveyed processed product does not continue to accumulate, and a large amount of the conveyed processed product is not wound.

  Therefore, it is possible to prevent the conveyance processed product from adhering and accumulating on the outer peripheral side of the drive shaft of the feeder, reducing the possibility of conveyance clogging due to the adhesion accumulation of the conveyance processed material, and improving the conveyance of the conveyance processed material. It became possible to be able to do it.

  In the present invention, it is preferable that the fixing member is constructed over side walls on both sides in the lateral direction of the feeder case in a state of being located on the inner peripheral side of the endless rotating body.

  According to this configuration, the fixing member is located on the inner peripheral side of the endless rotating body, and both end portions thereof are constructed on the side walls on both sides in the lateral direction of the feeder case. It is supported stably in the holding state.

  And although there are a large amount of harvested cereals that are pushed and moved by the conveying member on the outer peripheral side of the endless rotating body, it is considered that the transport amount of the harvested cereals is relatively small compared to the inner peripheral side of the endless rotating body. As described above, since the fixed member is located on the inner peripheral side of the endless rotating body with a small amount of the harvested cereals conveyed, the fixed member is less likely to obstruct the conveyance of the conveyed product.

  In this invention, it is suitable when the supporting member which supports the said boss member is connected with the said feeder case in the state located in the inner peripheral side of the said endless rotation body.

  According to this configuration, the boss member is supported by the support member connected to the feeder case in a state of being located on the inner peripheral side of the endless rotating body. There are a large number of harvested cereals that are pushed and moved by the conveying member on the outer peripheral side of the endless rotating body, but the inner peripheral side of the endless rotating body is considered to have a relatively small transport amount of the harvested cereal grains.

  As described above, since the support member is located on the inner peripheral side of the endless rotating body with a small transport amount of the harvested cereal meal, it is possible to support the boss member in a state in which the support member is less likely to hinder the transport of the transport processing object. it can.

  In this invention, it is suitable when the supporting member which supports the said boss member is connected with the said fixing member.

  According to this configuration, since the support member is coupled to the fixing member supported by the feeder case, the support member and the fixing member that are located on the inner peripheral side of the endless rotating body can support each other compactly and firmly. it can.

  In this invention, it is suitable when the connection object part with respect to the said fixing member in the said supporting member is formed in the shape in alignment with the shape of the outer peripheral part of the said fixing member.

  According to this structure, the connection target part formed in the shape in alignment with the shape of the outer peripheral part of a fixing member is connected with respect to a fixing member. In other words, since the support member and the fixing member are connected in a state where they are in contact with each other over a wide range, the support member and the fixing member are connected in a state where the support member and the fixing member are integrally fixed, or the both are engaged. Various connection structures, such as a structure to perform, can be employ | adopted and a support member can be favorably supported by a fixing member also in any structure.

  In this invention, when the connection object part with respect to the said fixing member in the said supporting member engages with the said fixing member, it is suitable when the said supporting member is supported by the said fixing member.

  According to this configuration, the support member can be supported with respect to the fixed member by a simple linkage structure in which the support member and the fixed member are engaged.

  In the present invention, it is preferable that a pair of the supporting members is provided corresponding to each of the pair of boss members.

  According to this configuration, the pair of boss members are respectively supported by the support members provided separately, so that each of the pair of boss members can be accurately supported by the feeder case.

  In the present invention, it is preferable that the fixing member is formed of a cylindrical member.

  According to this configuration, since the outer peripheral surface of the fixing member is circular, there is little possibility that the processed material is caught and accumulated on the outer peripheral portion of the fixing member. Therefore, the support member can be supported by the fixing member in a state where there is little possibility of hindering conveyance.

In the present invention, the fixing member is constructed over the lateral side walls of the feeder case in a state of being located on the inner peripheral side of the endless rotating body,
It is preferable that a closing member that closes a space between the winding prevention cover and the fixing member is provided in a state of being supported across the pair of support members.

  According to this structure, the area | region enclosed by a pair of support member located in the both sides of a horizontal direction among the space between a fixing member and a winding prevention cover will be obstruct | occluded by the closure member.

  Therefore, even if the conveyed product is to be wrapped around the outer periphery of the wrapping prevention cover, the area of the space as described above is blocked by the closing member, so the processed material to be conveyed to the outer periphery of the wrapping prevention cover by the closing member. Therefore, it is possible to prevent a large amount of the processed material from being deposited on the anti-winding cover.

  In the present invention, the end of the closing member on the side of the fixing member is located in a portion of the fixing member that is closer to the lower side in the rotational direction than the driving wheel of the endless rotating body, It is preferable that it is formed so as to extend toward the driven wheel body from the center position of the member.

  According to this configuration, it is possible to release the wrapping of the conveyance processed product on the outer periphery of the wrapping prevention cover by the closing member positioned on the lower side in the rotational direction from the driving wheel body, The conveyed product can be guided farther toward the driven wheel body than the center position of the fixing member, and the wrapping of the conveyed product on the wrapping prevention cover can be avoided.

  In this invention, it is suitable when the edge part by the side of the said winding prevention cover in the said closure member is supported in the state which contacts with respect to the said winding prevention cover.

  According to this structure, since the edge part of a closure member contacts a winding prevention cover, it can suppress that a winding prevention cover rotates by the friction between the edge parts of a closure member. Therefore, it is possible to avoid winding of the conveyance processed product around the winding prevention cover.

  In the present invention, it is preferable that the wrapping prevention cover is supported in a state of being inserted into and attached to each of the pair of boss members.

  According to this configuration, the wrapping prevention cover can be supported by the pair of boss members with a simple support structure of being inserted and mounted.

  In the present invention, it is preferable that the outer peripheral portion of the boss member is provided with a wrapping preventing scraper that protrudes radially outward in a state in which one end in the lateral direction is close to the drive wheel body. is there.

  According to this configuration, even when the conveyance processing object is to be wound between the driving wheel body and the outer peripheral portion of the boss member in accordance with the execution of the conveyance processing, the winding is prevented by the scraper protruding outward in the radial direction. can do.

  In the present invention, it is preferable that a sliding guide is provided on the inner surface side of the bottom of the feeder case.

  According to this configuration, even when the endless rotating body is extended along with the rotation drive, the extended endless rotating body does not directly contact the bottom of the feeder case, but is slid by the sliding guide body. By causing the guide to move, early wear of the bottom of the feeder case can be prevented. It should be noted that the sliding guide can be replaced when worn.

It is a whole side view of a combine. It is a whole top view of a combine. It is a vertical side view of a feeder. It is a cross-sectional top view of a drive shaft arrangement | positioning part. It is a vertical side view of a drive shaft arrangement part. It is a side view of a tension adjustment mechanism. It is a cross-sectional top view of a driven wheel body arrangement | positioning part. It is a cross-sectional top view of a driven wheel body arrangement | positioning part. It is a side view of a bolt penetration hole formation part. It is a figure which shows a sliding guide body. It is a side view which shows the operation linkage mechanism for transmission. It is sectional drawing of a ball joint.

DESCRIPTION OF EMBODIMENTS Hereinafter, an embodiment of a normal combine according to the present invention will be described with reference to the drawings.
As shown in FIGS. 1 and 2, this combine has a traveling machine body 2 including a pair of left and right crawler traveling devices 1, an axial threshing device 3 and a grain storage grain tank 4 arranged in parallel on the left and right. The operation unit 5 is provided in front of the grain tank 4. A feeder 6 for conveying the harvested cereal rice cake is connected to the front part of the threshing device 3 so as to be swingable up and down around the horizontal axis P1. It is connected. A rotary reel 8 that scrapes the planted crops backward is provided above the front part of the cutting unit 7. Moreover, the grain discharge apparatus 9 which discharges | emits the grain stored in the grain tank 4 outside is provided.

  An engine 11 is mounted below the driver seat 10 in the driver 5 and a mission case 12 is provided below the front of the fuselage. Further, a main transmission 13 composed of a hydrostatic continuously variable transmission (HST) is provided on the upper side of the transmission case 12. Then, after the power of the engine 11 is shifted by the main transmission 13, the power is transmitted to the left and right crawler travel devices 1 via a sub-transmission device (not shown), a steering transmission mechanism, and the like in the transmission case 12. A traveling transmission system is configured.

  The main transmission 13 is shifted by a manual operation of a main transmission lever 15 provided on the side panel 14 of the driving unit 5. That is, as shown in FIG. 11, the main transmission lever 15 is supported by the frame 16 so as to be swingable back and forth around the horizontal axis P2. A swing arm 17 that swings up and down integrally around the horizontal axis P <b> 2 as the main transmission lever 15 swings back and forth and an upper end portion of the push-pull rod 18 that extends in the up-down direction are interlocked via a ball joint 19. It is connected. Further, the lower end portion of the push / pull rod 18 and the speed change operation arm 20 of the main speed change device 13 are interlocked and connected via a ball joint 19.

  Next, the configuration of the ball joint 19 will be described with reference to an example of a connecting portion between the swing arm 17 and the push / pull rod 18.

  As shown in FIG. 12, the ball joint 19 includes a ball member 19 </ b> B formed integrally with an arm side shaft member 19 </ b> A connected to the swing arm 17, and a holder formed integrally with the push-pull rod 18. A member 19C, a synthetic resin sheet member 19D, and an elastically deformable dust seal 19E are provided.

  The holder member 19C is formed with a recessed portion 19F into which the ball member 19B enters. The ball member 19B is supported in a swingable manner relative to the holder member 19C in a state in which the ball member 19B enters the recessed portion 19F. . A sheet member 19D is provided between the ball member 19B and the holder member 19C. The sheet member 19D is formed in a substantially cup shape so as to follow the shape of the recessed portion 19F of the holder member 19C, and is provided in a state of covering the ball member 19B. The sheet member 19D is preferably made of synthetic resin.

  A grease reservoir 19G is formed between the sheet member 19D and the holder member 19C so as to communicate with the ball member 19B and the sheet member 19D. As described above, since the grease reservoir 19G is formed in the recessed portion 19E of the holder member 19C, the grease is supplied between the ball member 19B and the seat member 19D in a state where there is little risk of the grease leaking outside. Can do.

  The swing arm 17 is fastened and fixed by the nut 21 with the insertion hole 17a formed in the swing arm 17 being fitted on the shaft portion of the arm side member 19A. A hexagon hole 19H for a hexagon wrench is formed at the shaft end of the arm side shaft member 19A so that the nut 21 can be easily tightened in the assembling operation. That is, when the swing arm 17 is assembled and tightened with the nut 21, the arm side shaft member 19A that freely rotates can be fixed by inserting a hexagon wrench (not shown) into the hexagon hole 19H. Moreover, the hexagonal hole 19H and the nut 21 are on the same side with respect to the swing arm 17, so that the swing arm 17 does not get in the way during assembly work.

  As shown in FIG.1 and FIG.2, the cutting part 7 forms the back board 28 which forms a back surface, and a bottom face in the cutting part frame 27 comprised by connecting a square pipe, an angle material of L-shaped cross section, etc. The conveyance deck 29 and a pair of left and right side plates 30 and 31 forming left and right side surfaces are connected and fixed to form a frame structure. A clipper-type mowing device 32 is provided along the front end of the transport deck 29 across the left and right side plates 30 and 31. Further, across the left and right side plates 30, 31, a lateral feed auger 33 is installed for collecting and transporting the harvested culm toward the intermediate side in the lateral direction of the machine body.

  The lateral feed auger 33 is provided with a pair of left and right screw blades 35 that laterally feed the outer diameter auger drum 34 toward the front end of the feeder 6 toward the front side of the feeder 6 as it rotates. It is done. In addition, rod-like screed bodies 36 that are retracted from the auger drum 34 as the lateral feed auger 33 rotates are provided at a plurality of locations in the circumferential direction at locations facing the front end entrance of the feeder 6 in the lateral feed auger 33. Yes.

The feeder 6 will be described.
As shown in FIGS. 1 and 3, the feeder 6 is provided in a feeder case 37 formed in a rectangular tube shape with a lateral drive shaft 38 to which power is transmitted with a space in the axial direction. A pair of driving sprockets 39 as a pair of driving wheel bodies, a driven wheel body 41 provided on a laterally driven shaft 40, and a pair of endless coils wound over them and provided at intervals in the axial direction An endless rotating chain 42 serving as a rotating body and a plurality of conveying members 43 that are installed horizontally across the pair of endless rotating chains 42 are configured.

  In other words, as shown in FIG. 4, a lateral drive shaft 38 that is driven and rotated by transmission of power from the engine 11 is provided, and a support cylinder portion 44 that rotatably supports the drive shaft 38 is provided. It is supported on the front wall portion of the threshing device 3 through a pair of left and right fulcrum brackets 45 so as to be rotatable around the horizontal axis P1. The side walls 37A on both the left and right sides of the feeder case 37 are integrally connected to the support cylinder portion 44, and the entire feeder case 37 including the cutting portion 7 is swingable up and down around the horizontal axis P1. It is the structure supported by the part.

  The drive shaft 38 has a hexagonal cross-sectional shape, and a pair of left and right drive sprockets 39 having hexagonal fitting holes that fit into the hexagonal cross-sectional shape are spaced apart along the axial direction. The external fitting is attached so that it can be rotated together. Further, the drive shaft 38 protrudes outward one lateral side of the feeder case 37, and an input pulley 46 to which power from the engine 11 is transmitted is provided at the protruding portion.

  Further, a drum-type driven wheel body 41 is provided at a position on the front end side of the machine body in the feeder case 37 so as to be rotatable around a lateral axis P3, and left and right across the pair of left and right drive sprockets 39 and the driven wheel body 41. A pair of endless rotating chains 42 are wound and stretched. A plurality of conveying members 43 are horizontally connected at a predetermined pitch across a pair of left and right endless rotating chains 42.

  In this way, power is transmitted to the drive shaft 38 and the pair of endless rotating chains 42 rotate integrally in the same direction, whereby the crop supplied from the cutting unit 7 is transported in the feeder case 37. A conveying conveyor that is scraped and conveyed at 43 and supplied to the threshing device 3 is configured.

  As shown in FIG. 3, a sliding guide body 47 is provided on the inner surface side of the bottom portion 37 </ b> B in the feeder case 37. The sliding guide body 47 is made of a synthetic resin material, and as shown in FIG. 7, a pair of left and right sliding guide bodies 47 are provided in a state of being positioned below the pair of endless rotating chains 42.

  As shown in FIG. 10, the sliding guide body 47 is formed in a band plate shape, and is provided in a state in which a plurality of divided sliding guide bodies 47 a are sequentially connected to extend over substantially the entire conveyance path of the feeder 6. Configured. That is, as shown in FIG. 3, the countersinks 48 are inserted by overlapping the ends of the divided sliding guide bodies 47 a up and down, and the countersunk screws 48 are welded and fixed to the bottom lower surface side of the feeder case 37. By being fastened with the nut 49, the divided sliding guide body 47a and the feeder case 37 are fastened together. The countersunk screw 48 is mounted in a state in which the tip of the head does not protrude from the sliding guide body 47, and the countersunk screw 48 comes into contact with the conveying member 43 to generate noise, and the conveyance processing object is caught and retained. I try to avoid it.

  The sliding guide body 47 can be partially or wholly removed by loosening the countersunk screw 48. When worn, the sliding guide body 47 is easily replaced with a new one. be able to. Such a replacement operation of the sliding guide body 47 can be performed through the inspection openings 50 formed in the upper and lower portions of the upper surface 37C of the feeder case 37. The inspection opening 50 is normally closed by a lid 51 that can be freely opened and closed.

  As shown in FIG. 7, the driven wheel body 41 is configured by integrally including a driven shaft 40 and a drum portion 52 formed around the driven shaft 40. A pair of left and right flange portions 53 that integrally prevent the lateral displacement of the pair of left and right endless rotating chains 42 are integrally provided on the outer peripheral portion of the drum portion 52.

  As shown in FIG. 7, both end portions of the driven shaft 40 are supported by a pair of slide support portions 55 via bearings 54, respectively, and the pair of left and right slide support portions 55 are respectively provided with three bolts 56 and nuts. Fastened to the side wall 37A on both the left and right sides of the feeder case 37 by fastening with 57, the driven wheel body 41 is supported in a fixed position. In addition, a wrapping prevention plate 58 supported by the left and right slide support portions 55 in a fixed position is provided. The wrapping prevention plate 58 is provided in the state of being close to the outer peripheral portion of the drum portion 52, and is configured to prevent the harvested cereal wrapping around the outer periphery of the drum portion 52 from being accumulated.

The portions where the driven wheel body 41 is supported by the fastening of the bolts 56 and nuts 57 on the left and right side walls 37A of the feeder case 37 are reinforced by the reinforcing frame 59.
That is, as shown in FIGS. 6 and 9, it is connected to a vertical connecting plate 60 connected to the lower portion of the side wall 37A of the feeder case 37 and extends to the middle position between the upper and lower sides of the side wall 37A. An intermediate longitudinal reinforcement 61 is provided. Further, a longitudinal reinforcement 62 on the front end side made of a channel material is provided over the entire vertical width of the side wall 37 </ b> A at the front end side portion connected to the cutting portion 7.

  A front-rear reinforcing body 63 having an L-shaped cross section is provided in a state of being connected from the upper part of the intermediate-side vertical reinforcing body 61 to the longitudinal reinforcing body 62 on the front end side. Bolt insertion holes 64 are formed in the front-rear reinforcing body 63 and the side wall 37A of the feeder case 37, respectively, and the slide support portion 55, the side wall 37A of the feeder case 37, and the front-rear reinforcing body 63 are sandwiched in three places. The bolt 56 and the nut 57 are fastened.

  Accordingly, the reinforcing frame body 59 is constituted by the longitudinal reinforcing body 61 on the intermediate side, the longitudinal reinforcing body 62 on the front end side, and the longitudinal reinforcing body 63.

  The position fixing nut 57 is fixed to the inside of the slide support portion 55 by welding, and a bolt insertion hole 64 penetrating the side wall 37A of the feeder case 37 and the front-rear reinforcing body 63 is formed as shown in FIG. It is formed in a long hole shape that is elongated along the direction in which the moving wheel body 41 and the drive shaft 38 are arranged (processed material conveyance direction).

  When the fastening of the three bolts 56 and nuts 57 respectively provided on the left and right side walls 37a is loosened, the left and right slide support portions 55 and the driven wheel body 41 are positioned along the longitudinal direction of the bolt insertion holes 64. After changing the position, the driven wheel body 41 can be supported in a fixed position by fixing the three locations by fastening the bolt 56 and the nut 57 again.

  Therefore, when the endless rotating chain 42 is stretched and slackened with use, the slack of the endless rotating chain 42 can be eliminated and the tension can be adjusted by changing the position of the driven wheel body 41. it can.

Next, a configuration for adjusting the tension (tension) of the endless rotating chain 42 will be described.
The tension adjustment mechanism 65 having the same configuration is provided in a state where the feeder case 37 is positioned on both the left and right sides. Hereinafter, the configuration of the tension adjustment mechanism 65 will be described.
As shown in FIGS. 6 and 7, a support bracket 66 is provided that is coupled to the side wall 37 </ b> A of the feeder case 37 by an intermediate bolt 56 located in the middle of the arrangement direction of the three bolts 56. The support bracket 66 is integrally formed with an adjustment bolt 67 in a posture along the workpiece conveyance direction. In addition, a spring receiving member 69 having an insertion hole 68 through which the adjustment bolt 67 is inserted is provided in a state of being fixed to the front-rear reinforcing body 63 by bolt fastening.

  A coil spring 70 is externally attached to the adjustment bolt 67. One end of the coil spring 70 is received and supported by a spring receiving member 69, and the other end of the coil spring 70 is received and supported by a nut 72 that is screwed and attached to an adjustment bolt 67 via a washer 71. 72 is used in a compressed state due to tightening and generating a spring biasing force in the extending direction.

  In the tension adjusting mechanism 65 having such a configuration, when the fastening of the three bolts 56 and the nut 57 is loosened, the adjusting bolt 67 slides along the longitudinal direction of the bolt insertion hole 64 integrally with the slide support portion 55. Can move. The adjusting bolt 67 is pushed by the spring biasing force of the coil spring 70, and the driven wheel body 41 is moved and biased in a direction away from the drive shaft 38.

  Therefore, when the tension of the endless rotating chain 42 is adjusted with the three bolts 56 and the nuts 57 loosened, the length of the coil spring 70, that is, between the spring receiving member 69 and the nut 72 is adjusted. The tension of the endless rotating chain 42 can be adjusted to an appropriate value by adjusting the position of the nut 72 so that the separation distance becomes a predetermined length set in advance.

  That is, the length of the coil spring 70 corresponds to the spring biasing force of the coil spring 70 in the compressed state, and the length of the coil spring 70 can be easily determined by visual observation. By adjusting, the tension of the endless rotating chain 42 can be adjusted satisfactorily with no excess or deficiency.

  For example, in the initial state in which the endless rotating chain 42 is less slack, the length of the coil spring 70 is set to a predetermined length while the driven wheel body 41 is located on the drive shaft 38 side, that is, the rear side, as shown in FIG. When the endless rotating chain 42 is extended and slackened, the driven wheel body 41 is slid to the side opposite to the drive shaft 38 side, that is, the front side, as shown in FIG. This can be dealt with by adjusting the length of the coil spring 70 to a predetermined length.

Next, the structure around the drive shaft 38 in the feeder 6 will be described.
As shown in FIG. 4, a pair of bosses in a state of being externally fitted to the drive shaft 38 via bearings 73 at positions adjacent to the intermediate side in the lateral direction of the pair of drive sprockets 39 on the drive shaft 38. A member 74 is provided. Further, a cylindrical wrapping prevention cover 75 that is supported across the pair of boss members 74 in a state of being externally attached to the drive shaft 38 is provided.

  As shown in FIG. 4, the boss member 74 includes a main body portion 74a supported by a bearing 73, and a large-diameter cylindrical portion extending from the outer peripheral portion of the main body portion 74a toward the drive sprocket 39 side (laterally outward side). 74b and a small-diameter shaft portion 74c extending from the side surface on the left and right intermediate side (lateral inner side) of the inner peripheral portion of the main body 74a toward the intermediate side are integrally formed.

  The large-diameter cylindrical portion 74 b is provided in a state of covering the outer periphery of the cylindrical boss portion of the drive sprocket 39 and fitting into a circumferential groove 39 a that is recessed in the lateral inner side surface of the drive sprocket 39. With such a configuration, the outer peripheral portion is formed in a smooth cylindrical shape with a large diameter so that it is difficult for the harvested cereal to be wound around the side portion of the drive sprocket 39, and the large diameter cylindrical portion 74b is driven. There is no gap between the sprocket 39 and the harvested cereal meal.

  The anti-winding cover 75 is supported in a state of being inserted into and attached to each of the pair of boss members 74. That is, the wrapping prevention cover 75 is externally fitted to and supported by the small-diameter shaft portion 74 c formed on the left and right intermediate side surfaces of the pair of boss members 74. The wrapping prevention cover 75 is fitted slightly tightly to the small diameter shaft portion 74c and is prevented from freely rotating due to friction.

  As shown in FIGS. 4 and 5, a pair of left and right support plates 77 as support members are provided on the intermediate side surface of the pair of left and right boss members 74 in a state of being integrally connected by two bolts at the top and bottom. It has been. The pair of left and right support plates 77 is located on the inner peripheral side of the endless rotating chain 42 and is radially outward from the boss member 74, specifically, on the driven wheel body 41 side (front lower side). It is extended toward.

  As shown in FIGS. 3 to 5, a fixing member 78 is installed over the side walls 37 </ b> A on both sides in the left and right direction (lateral direction) of the feeder case 37 in a state of being located on the inner peripheral side of the endless rotating chain 42. The support plate 77 is connected to the fixing member 78. The fixing member 78 is formed of a cylindrical member, and is integrally connected to the left and right side walls 37A of the feeder case 37, respectively.

  As shown in FIG. 5, the connection target portion 77 a of the support plate 77 with respect to the fixing member 78 is formed in a shape (curved concave shape) along the shape (circular shape) of the outer peripheral portion of the fixing member 78. The pair of left and right support plates 77 are connected to the fixing member 78 by engaging the portion 77 a in a state where it abuts against the outer peripheral surface of the fixing member 78.

  Therefore, the pair of boss members 74 are configured to be supported by the feeder case 37 via the pair of left and right support plates 77 and the fixing member 78. As a result, even if the drive shaft 38 and the drive sprocket 39 are rotated counterclockwise in FIGS. 3 and 5 in order to convey the harvested grain, the boss member 74 is supported by the feeder case 37. 74 and the wrapping prevention cover 75 supported thereby do not rotate in a state where the drive shaft 38 rotates with the rotation of the drive shaft 38, and can prevent the harvested culm from being deposited and accumulated.

  As shown in FIG. 4, in the state where one end in the lateral direction is close to the right drive sprocket 39 on the outer periphery of the boss member 74 located on the right side (upper side in FIG. 4) of the pair of boss members 74, A scraper 79 for preventing winding is provided to protrude outward in the radial direction. In addition, as shown in FIG. 2, the lateral feed auger 33 has a shape in which the right side is longer than the feeder 6 and the left side is shorter, and the right side portion of the feeder 6 has a larger amount of processed material than the left side. There is a large risk that winding will occur. Therefore, the boss member 74 located on the right side is provided with a scraper 79 to prevent winding. Instead of such a configuration, scrapers 79 may be provided on the boss members 74 on the left and right sides.

As shown in FIGS. 3 to 5, a closing member 80 that closes the space between the wrapping prevention cover 75 and the fixing member 78 is provided in a state of being supported across a pair of support plates 77.
The closing member 80 has a lateral width corresponding to the distance between the left and right boss members 74, and exceeds the center position of the fixing member 78 in plan view from the upper side portion of the anti-winding cover 75, and is on the driven wheel body 41 side. It is formed of a rectangular plate having a front and rear width that extends slightly. The closing member 80 is connected to the bolt connecting portion 81 formed on each of the pair of left and right support plates 77 by fastening with bolts.

  The left and right support plates 77 have the same shape, and the bolt connecting portions 81 are provided on both the upper and lower sides. Therefore, even if the pair of support plates 77 are replaced on the left and right, the attachment to the boss member 74 and the connection of the closing member 80 can be performed satisfactorily, so that the members can be shared and the assembly work can be facilitated. I have to.

  The closing member 80 is supported in a state in which the end portion on the winding prevention cover 75 side is in contact with the winding prevention cover 75. That is, as shown in FIG. 5, the end of the closing member 80 on the side of the anti-winding cover 75 disengages the drive sprocket 39 and the endless rotating chain 42 from the outer periphery of the anti-winding cover 75. At a position corresponding to the lower side of the portion, the winding prevention cover 75 is provided so as to contact with the outer peripheral portion in an oblique posture.

  By configuring in this way, the end of the blocking member 80 contacts the anti-winding cover 75, so that the anti-winding cover 75 is prevented from rotating due to friction with the end of the closing member 80. It is possible to avoid the wrapping of the conveyance processed product around the wrapping prevention cover 75.

  As shown in FIGS. 3 to 5, the closing member 80 has an end on the fixing member 78 side positioned above the fixing member 78 and extended toward the driven wheel body 41. In other words, the closing member 80 is positioned above the fixing member 78 and extends so as to extend slightly beyond the center position of the fixing member 78 to the driven wheel body 41 side (front side).

  With this configuration, the blocking member 80 positioned on the lower side in the rotational direction of the drive sprocket 39 can avoid the wrapping of the conveyance processed product around the outer periphery of the wrapping prevention cover 75. In addition, the conveyed product can be guided farther toward the driven wheel body 41 than the center position of the fixing member 78, and the wrapping of the conveyed product on the wrapping prevention cover 75 can be avoided. Can be made.

  Accordingly, it is possible to avoid the harvested cereal from adhering and accumulating on the outer peripheral side of the drive shaft 38, and the conveyance process can be performed in a state in which there is no disadvantage such as the occurrence of clogging due to the harvested culm being deposited and accumulated. It becomes possible to execute.

[Another embodiment]
(1) In the above embodiment, the driven wheel body is shown in which the drum portion 52 is integrally provided around the driven shaft 40. Alternatively, the driven wheel body may be one in which a sprocket is externally fitted to the drum. The sprocket of the driven shaft 40 may be provided.

(2) In the above embodiment, the connection target portion of the support plate 77 (support member) to the fixing member 78 is formed in a shape that follows the shape of the outer peripheral portion of the fixing member 78. The present invention is not limited to such a configuration, and various embodiments such as a configuration in which the fixing member 78 is simply sandwiched and engaged from above and below can be implemented.

(3) In the above embodiment, the support plate 77 (support member) is connected to the feeder case 37 via the fixing member 78. However, the support plate 77 is connected and fixed directly to the feeder case 37. It is good.

(4) In the above embodiment, a pair of support plates 77 (support members) are provided corresponding to each of the pair of boss members 74. However, as the support members, both the pair of boss members 74 are provided. It is good also as a structure connected in series so that it may be connected.

(5) In the above-described embodiment, the fixing member 78 is formed in a cylindrical shape. However, instead of this, the fixing member 78 may be implemented in various forms such as a square or angled cross section. it can.

(6) In the above embodiment, the wrapping prevention cover 75 is inserted and attached to each of the pair of boss members 74. However, the wrapping prevention cover 75 is connected to the pair of boss members 74 by bolts or the like. It is good also as a structure fixed.

(7) In the above embodiment, the scraper 79 for preventing wrapping is provided only on one boss member 74, but the scraper 79 may be provided on the boss members 74 on both the left and right sides. A configuration without the scraper 79 may be adopted.

(8) In the above embodiment, the sliding guide body 47 is provided on the inner surface side of the bottom portion 37B of the feeder case 37. However, the sliding guide body 47 may not be provided.

(9) In the above embodiment, a chain is used as the endless rotating body, but a belt may be used as the endless rotating body.

  INDUSTRIAL APPLICABILITY The present invention can be applied to a normal combine that is configured to convey the harvested cereals harvested at the front of the body to the rear of the body by a feeder.

6 Feeder 7 Cutting part 37 Feeder case 37A Side wall 37B Bottom 38 Drive shaft 39 Drive wheel body 40 Drive shaft 41 Drive wheel body 42 Endless rotating body 43 Conveying member 47 Sliding guide body 74 Boss member 75 Winding prevention cover 77 Support member 77a Part to be connected 78 Fixing member 79 Scraper 80 Closure member

Claims (14)

A feeder is provided that conveys the harvested cereals harvested by the harvesting part at the front of the aircraft toward the rear of the aircraft,
The feeder is
A cylindrical feeder case for transferring cereals, a lateral drive shaft installed inside the feeder case, to which power is transmitted, and a pair of drives provided at intervals in the axial direction of the drive shaft A ring body, a laterally driven shaft erected on the feeder case, a driven wheel body provided on the driven shaft, the drive wheel body and the driven wheel body, and wound in the axial direction A pair of endless rotating bodies provided at intervals, and a plurality of conveying members that are installed horizontally across the pair of endless rotating bodies, and
A pair of boss members that are positioned on the drive shaft adjacent to the intermediate side in the lateral direction of the pair of drive wheel bodies and are supported by the feeder case so as to be relatively rotatable with respect to the drive shaft, A cylindrical wrapping prevention cover supported across the pair of boss members in the inserted state,
The boss member is an ordinary combine unit that is connected to a fixing member supported by the feeder case.   2. The ordinary combine according to claim 1, wherein the fixing member is constructed across side walls on both sides in the feeder case in a state of being located on an inner peripheral side of the endless rotating body.   The ordinary combine according to claim 1 or 2, wherein a support member that supports the boss member is connected to the feeder case in a state of being located on an inner peripheral side of the endless rotating body.   The ordinary combine according to claim 3, wherein a support member that supports the boss member is connected to the fixing member.   The ordinary combine according to claim 4, wherein a portion to be connected to the fixing member in the support member is formed in a shape that follows a shape of an outer peripheral portion of the fixing member.   The ordinary combine according to claim 4 or 5, wherein a part to be connected to the fixing member in the supporting member is engaged with the fixing member, whereby the supporting member is supported by the fixing member.   The ordinary combine according to any one of claims 3 to 6, wherein a pair of the support members are provided corresponding to each of the pair of boss members.   The ordinary combine according to any one of claims 1 to 7, wherein the fixing member is formed of a cylindrical member. The fixing member is constructed across the side walls on both sides in the feeder case in a state of being located on the inner peripheral side of the endless rotating body,
The ordinary combine according to claim 8, wherein a closing member that closes a space between the wrapping prevention cover and the fixing member is supported in a state of being supported across the pair of support members.   The end of the closing member on the fixed member side is located in a portion of the fixed member that is closer to the lower side in the rotational direction than the driving wheel of the endless rotating body, and from the center position of the fixing member The ordinary combine according to claim 9, which is formed in a state of extending toward the driven wheel body.   The ordinary combine according to claim 9 or 10, wherein an end portion of the closing member on the side of the anti-winding cover is supported in a state of being in contact with the anti-winding cover.   The ordinary combine according to any one of claims 1 to 11, wherein the winding prevention cover is supported in a state of being inserted into and attached to each of the pair of boss members.   The scraper for preventing winding is provided on the outer peripheral portion of the boss member so as to protrude outward in the radial direction in a state in which one end in the lateral direction is close to the driving wheel body. The ordinary combine according to item 1.   The ordinary combine according to any one of claims 1 to 13, wherein a sliding guide body is provided on an inner surface side of a bottom portion of the feeder case.

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