JP2010110302A - Structure of combine harvester - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To increase rigidity of the connection unit between an outside grass dividing frame and a reaping frame, and the reaping frame itself by simple improvement, in the reaping structure of a combine harvester equipped with a reaping device of hair clipper type. <P>SOLUTION: The rigidity of the connection unit between the outside grass dividing frames 14 and the reaping frame 15 for holding a reaping device 9, and that of the reaping frame 15 are increased by equipping a lower lateral frame 13 connected to a main frame 12 of a pre-treatment unit, the right and left outside grass dividing frames 14, the reaping frame 15 installed with the reaping device 9, and a plurality of inside grass dividing frames 14 connected to the reaping frame 15, and fixing a first reinforcing member 25 ranging from the lower lateral frame 13 in the vicinity of the right and left outside grass dividing frames 14 to the reaping frame 15, while fixing a second reinforcing member 26 between the first reinforcing member 25 and the outside grass dividing frames 14. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a combine harvester structure including a clipper-type trimming device provided in a pretreatment unit frame provided at a front portion of a traveling machine body so as to be movable up and down.

As a harvesting part structure of a combine equipped with a clipper-type trimming device in a pretreatment part frame provided at the front part of the traveling machine body so as to freely move up and down, for example, as shown in Patent Document 1, as a pretreatment part frame, A main frame (transmission case 52) in which a base is pivotally connected to a support portion on the side of the traveling machine body so as to be rotatable around a laterally horizontal axis, and a lower horizontal frame (transmission case 53) connected to an extended lower end portion of the main frame 52 And an outer weed frame 56 extending from the left and right outer sides of the lower horizontal frame 53 toward the front of the machine body, and connected between the left and right outer weed frames 56, 56 spaced forward from the lower horizontal frame 53. A cutting frame (support frame 57) and a plurality of inner weed frames 58 extending forward from the cutting frame 57 toward the front of the machine body. The cutting device 13 is mounted on the grass frames 56, 56, and the round pipe frames 54 are extended inward from the left and right outer weed frames 56, 56 at positions between the lower horizontal frame 53 and the cutting frame 57, respectively. A configuration is known in which an arm support member that pivotally supports a cutting blade driving arm is attached to the round pipe frame 54 and the cutting frame 57.
JP 2003-284421 A

  In the above configuration, the side of the outer weeding frame 56 or the weeding tool 11 on one side hits the reed at the end of the field, especially when turning at the corner of the field or over the reed, or the weeding tool 11 becomes a reed. A large force is applied to the cutting frame constituting the outer frame when it is pierced (particularly, the connecting portion of the outer weed frame 56 to the lower horizontal frame 53 and the connecting portion of the outer weed frame 56 and the cutting frame 57), and deformation is caused. There was a risk of development. In particular, when the connecting portion between the cutting frame 57 and the outer weed frame 56 is deformed, the cutting performance of the cutting device 13 may be reduced.

  SUMMARY OF THE INVENTION An object of the present invention is to provide a harvesting portion for a combine that can increase the strength of the connecting portion between the outer weed frame, the lower horizontal frame, and the trimming frame with a simple improvement without making the trimming frame particularly large. To provide a structure.

[Configuration of the first invention]
A first aspect of the present invention is a combine harvester structure in which a pretreatment unit frame provided at a front portion of a traveling machine body is provided with a clipper type trimming device, and the pretreatment unit frame includes a support on the traveling machine body side. The main frame has a base that is pivotally connected to the left and right horizontal axis, a lower horizontal frame that is connected to the lower end of the main frame, and a left and right outside of the lower horizontal frame that extend forward from the left and right. An outer weed frame, a cutting frame that is spaced forward from the lower horizontal frame and connected between the left and right outer weed frames, and a plurality of inner weed frames that extend forward from the cutting frame toward the body. The cutting frame is attached to the cutting frame, and the lower horizontal frame and the cutting frame are positioned inside the left and right outer weeding frames and outside the plurality of inner weeding frames. The first reinforcing member is fixed, and the second reinforcing member is fixed between the first reinforcing member and the outer weed frame at a position between the lower horizontal frame and the cutting frame. .

[Operation of the first invention]
According to the first aspect of the present invention, the first reinforcing member is fixed inside the left and right outer weed frames and across the lower horizontal frame and the cutting frame at a position outside the plurality of inner weed frames. A box-shaped structure is obtained by the weed frame, the lower horizontal frame, the cutting frame, and the first reinforcing member, and the strength of the connecting portion between the outer weed frame and the lower horizontal frame and the connecting portion with the cutting frame can be increased.
By connecting the second reinforcing member between the first reinforcing member that functions as a strength member and the outer weed frame by connecting to the box structure, the outer side weed frame becomes the frame of the box structure. Since the frame, the cutting frame, and the first reinforcing member are connected to each other, the strength of the connecting portion with the lower horizontal frame with respect to the outer weed frame and the connecting portion with the cutting frame can be increased, thereby increasing durability. Can be improved.

[Effect of the first invention]
According to the first aspect of the present invention, even if the strength of each member is not particularly increased, even if the outer weeding frame unexpectedly hits a reed or the like and receives external force, the connecting portion is difficult to deform, and the cutting performance of the cutting device It has been possible to prevent as much as possible from adversely affecting the product.

[Configuration of the second invention]
According to a second aspect of the present invention, in the configuration of the first aspect, the cutting blade driving arm of the reaping device is pivotally supported by the first reinforcing member.

[Operation and effect of the second invention]
According to the second invention, since the first reinforcing member is also used as the shaft support member of the cutting blade driving arm of the reaping device, the number of parts can be reduced and the productivity can be improved with a simple improvement. It came to.

  As shown in FIG. 1, a threshing device 4, a grain tank 5, and the like are mounted on a body frame 3 of a body body provided with a crawler type traveling device 1, a boarding type driving unit 2, and a driving unit located below the driving seat. The transmission case 12 constituting the main frame in the pre-processing section 10 equipped with a plurality of pulling devices 8 mounted and arranged in the transverse direction of the machine body, a clipper-type mowing device 9 positioned on the rear side of the lower end side of the pulling device 8, etc. A base end portion is connected to a support portion located at the front portion of the body frame 3 so as to be rotatable about a left and right lateral axis P1 and is connected to the transmission case 12 at one end side thereof and the flexible frame mechanism 6 and the body frame. 3, a hydraulic lift cylinder 7 is attached, and a power combiner is configured to transmit power from the prime mover of the machine body to the pretreatment unit 10.

  This combine is for harvesting rice, wheat and the like, and the pretreatment unit 10 is moved to the main body by swinging the pretreatment unit frame up and down about the left and right lateral axis P1 by the lift cylinder 7. Move up and down. In other words, the lower end of the pulling device 8 and the cutting device 9 are located near the ground and the lowering work position for cutting the cereals, and the ascending end with respect to the main body and the ascending travel without cutting. Move up and down to the non-working position. As the machine travels, the pretreatment unit 10 causes the planted cereals such as rice and wheat to be raised and cut, and the chopped cereal from the pretreatment unit 10 is transferred to the feed chain 11 and threshed by the threshing device 4. Processing, the threshing grains from the threshing device 4 are conveyed to the grain tank 5 and stored.

  The pre-processing unit 10 is configured as shown in FIGS. That is, the transmission case 12 that constitutes the main frame, the lateral transmission case 13 that constitutes the lateral lower lateral frame in which the intermediate portion is connected to the extended lower end of the transmission case 12, and the fuselage from both ends of the lateral transmission case 13 The left and right outer weed frames 14 that extend forward, the cutting frame 15 that is connected across the base ends of the left and right outer weed frames 14, and the forward direction from a plurality of locations in the longitudinal direction of the cutting frame 15 The inner weed frame 14 extending to the left and right sides of the lateral transmission case 13 are connected across the upper end portions of the transmission case 16 and the vertical transmission case 16 which is vertically raised. The laterally raised transmission case 17, the base end of the May frame 12, and the intermediate part of the laterally raised transmission case 17 By each frame of the conveyor frame 18 are connected have configured the preprocessing unit frame.

  A weeding tool 14a is fixed to the tip of each of a plurality of inner and outer weeding frames 14 arranged in the horizontal direction of the machine body, and a plurality of weeding cereals to be cut by each weeding tool 14a. The frame 14 is configured to be introduced into an erecting path located between a pair of adjacent weeding frames 14. A plurality of pulling devices 8 arranged in the horizontal direction of the machine body are attached across the front end side of the weeding frame 14 and the transmission case 17 so as to cut the stock of the planted cereals that are raised and processed by the pulling devices 8. The mowing device 9 is attached to the mowing frame 15.

  As shown in FIG. 2, a reinforcing plate as a first reinforcing member extends between the transmission case 13 and the cutting frame 15 at positions outside the plurality of inner weed frames 14 inside the left and right outer weed frames 14. 25 and a round pipe frame 26 as a second reinforcing member is fixed between the reinforcing plate 25 and the outer weed frame 14 at a position between the transmission case 13 and the cutting frame 15.

  The reinforcing plate 25 is configured in a bent shape in a side view in which a flat plate is bent at a plurality of locations (two locations) in different directions. As a result, while the strength of the reinforcing plate 25 is improved with a bent shape, an inclined surface 25A inclined obliquely forward and downward can be formed at the front portion of the single plate-like reinforcing plate 25, and obliquely rearward at the rear portion of the reinforcing plate 25. The attachment part 25B inclined upward can be formed. A through hole communicating with the upper and lower sides is formed in the inclined portion where the inclined surface 25A of the reinforcing plate 25 is formed, and a cylindrical shaft support member 25C formed into a stepped shape is inserted into the through hole. Has been fixed. In this embodiment, an example in which the reinforcing plate 25 is formed into a single plate by bending and the inclined surface 25A is integrally formed is shown. However, for example, a plurality of flat plates are joined by welding or the like to form the reinforcing plate. The inclined surface 25A or the like may be formed by configuring 25 as a single plate.

  The shaft support member 25C is formed with a hole portion that communicates vertically, and a support shaft 61 that supports the arm 58 is inserted into the hole portion from above, and a screw at the tip (lower end) of the support shaft 61 is inserted. A nut is fastened to the portion from below via a disk-shaped washer, and the arm 58 of the cutting blade drive mechanism 53 is rotatably supported by the reinforcing plate 25. Thus, the upper surface of the shaft support member 25C parallel to the inclined surface 25A functions as a support surface that stably supports the boss portion of the arm 58. In addition, without providing the shaft support member 25C, the inclined portion where the inclined surface 25A of the reinforcing plate 25 is formed has a thicker plate thickness, for example, and the arm 58 is directly contacted with the inclined surface 25A. The inclined surface 25A may be configured to function as a support surface that stably supports the boss portion of the arm 58.

  The front end portion of the reinforcing plate 25 is fixed to the upper surface side of the square pipe-shaped cutting frame 15. The transmission case 13 is integrally formed with a support portion 13a protruding forward, and the lower surface side of the attachment portion 25B of the reinforcing plate 25 is applied to the support portion 13a, and a bolt is attached to the screw portion of the support portion 13a from above. The reinforcing plate 25 is detachably fixed to the support portion 13a by being tightened. The inner end side of the horizontally long round pipe frame 26 is fixed to the lower surface side in the front and rear center portion of the reinforcing plate 25, and the outer end side of the round pipe frame 26 is an inner portion of the rear end portion of the outer weed frame 14. It is fixed to.

  In addition, although the example which comprised the 2nd reinforcement member with the round pipe frame 26 was shown, solid materials, such as a round bar, may be employ | adopted as a 2nd reinforcement member, and cross-sectional shape differs as a 2nd reinforcement member. A material (a square pipe, a square bar, etc.) may be adopted, and the second reinforcing member may be composed of an angle material, a channel material, a flat bar, or the like. Moreover, in this embodiment, although the example provided with the round pipe frame 26 as a 2nd reinforcement member over the reinforcement board 25 and the outer weeding frame 14 was shown, for example, while omitting the round pipe frame 26, The reinforcing plate 25 is further widened so as to extend laterally outward, the lateral outer end of the reinforcing plate 25 is fixed to the outer weed frame 14, and the reinforcing plate 25 itself functions as a second reinforcing member. It may be configured.

  The reaping device 9 includes two left and right fixed blades 51, two left and right movable blades 52 provided on the fixed blade 51, and a cutting blade drive mechanism 53 that drives each movable blade 52. Fixed blades 51 are supported by the bases of a plurality of inner and outer weed frames 14 that are arranged at predetermined intervals in the lateral direction of the machine body.

  The fixed blade 51 is provided with a movable blade support member 54 that holds the movable blade 52, and the left and right movable blades 52 are slidable in the horizontal direction of the fixed blade 51 via the movable blade support members 54. It is supported by.

  A movable blade operating body 55 is provided near the outside of each of the left and right movable blades 52, and the movable blade 52 is fixed to the fixed blade 51 by driving the cutting blade driving mechanism 53 connected to the movable blade operating body 55. It is configured to reciprocate left and right in the direction.

As shown in FIGS. 2 to 4, the movable blade operation body 55 is provided with an engaging groove formed by an operation plate 56. The cutting blade drive mechanism 53 has an arm 58 formed of a bell crank provided with an operation roller 57 engaged in the engagement groove of the movable blade operation body 55 at one end, and one end side is relative to the other end of the arm 58. The interlocking rod 59 is rotatably connected, and the other end of the interlocking rod 59 is provided with a drive rotating body 60 that functions as a crank arm that is relatively rotatably connected to the peripheral edge.
An intermediate portion of the arm 58 is pivotally supported by a support shaft 61 supported by the reinforcing plate 25, and the support shaft 61 is engaged with the take-up rotating body 21 of the take-up conveying device 20. A pulley 19 for winding the conveyor belt 22 and a sprocket 29 for winding the endless rotating chain 23a or 31a are provided. The upper end of the support shaft 61 is supported by the support plate 48. Accordingly, the reinforcing plate 25 is also used as a shaft support member of the cutting blade driving arm 58 of the cutting device 9. The drive rotator 60 is supported by a rotating shaft 63 rotatably held by a short cylinder case 62 formed at the left and right ends of the transmission case 13.

  As a result, each cutting blade drive mechanism 53 converts the rotational driving force of the driving rotary body 60 driven around the obliquely upward upward axis P2 of the rotary shaft 63 into reciprocating power by the interlocking rod 59, and thereby ends of the arms 58. The arm 58 is driven so as to reciprocate and swing at a constant swing angle about the diagonally upward upward axis P3 of the support shaft 61, and the reciprocating power of the arm 58 is moved by the operating roller 57 to the movable blade operating body. By transmitting to 55, the movable blade 52 is driven to reciprocate left and right.

  As shown in FIG. 3, the rear end side of the fixed blade support base 66 in the reaping device 9 is configured to be swingable up and down around the horizontal frame axis P <b> 4 with respect to the weed frame 14. . Bolts 69 are attached across the extending end side of the cutting and fixing arm 67 extending forward from the fixed blade support base 66 and the fixing member 68 attached to each of the inner and outer weed frames 14. By connecting the cutting and fixing arm 67 to the fixing member 68, the cutting device 9 is fixed to the cutting frame 15 in a desired work mounting posture. By releasing the connection of the cutting fixing arm 67 to the fixing member 68 with the bolt 69, the cutting device 9 is allowed to swing up and down around the horizontal axis P4 and the mounting posture of the cutting device 9 is slightly changed up and down. Can be done.

  A scooping and transporting device 20 having a plurality of scrambling rotating bodies 21 arranged in the lateral direction of the machine body above the reaping device 9 is supported by the reinforcing plate 25 and the weeding frame 14 and the like. A conveying device 30 extending from the side to the vicinity of the front end of the threshing feed chain 11 of the threshing device 4 is supported by the conveying frame 18 or the like.

  As shown in FIG. 5, the scraping / conveying device 20 includes a plurality of drive-rotating scraping rotators 21, and one side above each of the scraping rotators 21 in the lateral direction of the machine body. A plurality of drive-rotating locking and conveying belts 22 arranged side by side, and an endless portion for conveying and sandwiching cereal grains in which a conveyance start end portion is located above some of the plurality of scraping rotators 21. The rotating chains 23a and 23b and the endless rotating chain 24 for conveying and holding the cereals in which the conveying start end is located near the rear side of the take-in rotating body 21, and a plurality of lines that are raised and processed. A plurality of strips of the planted cereal that have been cut and fed to the cutting device 9 by the locking claws 22a of the locking conveyor belts 22 and cut by the portion of the cutting device 9 located on the operating side. The locking claw 21a of the scraping rotary body 21 corresponding to the harvested cereal meal A plurality of harvested cereals that have been scraped and conveyed to the rear of the cutting device 9 by the locking claw 22a of the locking and conveying belt 22 and fed to the starting end side of the conveying device 30 and have been cut by the rear side of the cutting device 9 Corresponding to this, the catching claw 21a of the scooping rotating body 21 and the catching claw 22a of the catching and transporting belt 22 are used to scrape and feed the reaping device 9, and the endless rotating chains 23a, 23b, and 24 Nipped and conveyed to the conveying device 30.

  As shown in FIG. 1 and FIG. 5, the transport device 30 includes a stockholder clamping transport section 31, 32, 33 including three endless rotating chains 31a, 32a, 33a arranged in the transport direction, The tip locking transport unit 34 having an endless rotating chain 34 a positioned higher than the portions 31, 32, 33, the tip transport guide 35 positioned higher than the tip locking transport unit 34, and the stock holding and transporting unit 31. , 32, 33, and a guide rail 36 extending from the conveying terminal end of the threshing feed chain 11 to the conveying start end.

  The stock holding and conveying unit 31, 32, 33 is located on the most conveying start end side among the three endless rotating chains 31a to 33a, and has a start end side endless rotating chain 31a provided with a grain ridge pinching protrusion, Also, a starting end side stock holding / carrying part 31 including first and second holding / carrying guide rails 37 and 38 facing the carrying action part of the starting end side endless turning chain 31a, and three endless turning chains 31a. The intermediate endless rotating chain 32a, which is located at the transport intermediate portion of the .about.33a and provided with the protrusion for pinching the culm, and the transport action portion of the intermediate endless rotating chain 32a is mostly opposed to the first. The intermediate stockholder holding and conveying unit 32 including the three holding and conveying guide rails 39, and the three endless rotating chains 31a to 31c, which are located closest to the conveying terminal and have protrusions for holding the cereal A terminal-side endless rotating chain 33a and a terminal-side stock holding / carrying unit 33 provided with a fourth holding / conveying guide rail 40 facing the conveying portion of the terminal-side endless rotating chain 33a. is there.

  The start end side stock holding and conveying unit 31 forms a first holding and conveying guide rail 37 on the stock side of the harvested cereal meal from the two scraping rotating bodies 21 on the operation unit side of the picking and conveying device 20. Introduced between the starting endless endless rotating chain 31a and the first holding and conveying guide rail 37 by a guide portion on one end side of the round bar member, the starting endless endless rotating chain 31a and the first holding and conveying guide rail 37 37, and the stocker side of the harvested cereal from the one scraping rotating body 21 and the endless rotating chain 23b in the center of the scraping transport device 20 is sandwiched by the second transporting guide Grain from the first holding and conveying guide rail 37 introduced between the starting endless endless rotating chain 31a and the second holding and conveying guide rail 38 by a guide portion on one end side of the round bar member forming the rail 38. Join and join The cereal base of the cereal culm is sandwiched and conveyed by the starting endless endless rotating chain 31a and the second nipping and conveying guide rail 38, and further, the harvested cereal from the endless rotating chains 23a and 24 of the rake conveying device 20 The stock side of the straw is introduced into the transport end of the endless rotating chain 31a and joined to the grain from the second clamping conveyance guide rail 38, and the stock side of the joined grain straw is sandwiched by the intermediate stock The intermediate endless rotating chain 32a of the transport unit 32 and the third sandwiching transport guide rail 39 are inherited and sandwiched and transported in the body direction and toward the laterally outer side of the body. The terminal side stock holding and conveying unit 33 inherits the stock side of the harvested cereal mash from the intermediate stock holding and conveying unit 32 by the terminal side endless rotating chain 33a and the fourth holding and conveying guide rail 40, and threshing backward in the machine body. The feed chain 11 is conveyed toward the conveyance start end.

  The tip locking and conveying section 34 has a conveying start end located at a higher level than the stock holding and conveying section 31 behind the scraping rotary body 21 on the most operating part side of the picking and conveying apparatus 20 and a locking conveying claw. 34b is composed of an endless rotating chain 34a that can be swung up and down at a plurality of locations, and a latched conveying guide rail 41 facing the terminal end portion on the conveying side of the endless rotating chain 34a. The tip end side is inherited by the conveying start end side of the endless rotating chain 34a from the portion where the stock holding and conveying unit 31 of the plurality of chopped cereal grains from the conveying device 20 conveys, and is latched and conveyed by the locking conveying claw 34b. From the transport intermediate portion, the latch transport claw 34b is engaged and transported along the latch transport guide rail 41 so as not to be disengaged from the latch transport claw 34b. Aircraft By moving toward the side, which the drawing action on the body inside from the terminating lines based nip transport unit 33 the tip side.

  Thereby, the conveying apparatus 30 inherits and merges the plurality of cut cereal grains from the pick-up conveying apparatus 20 between the starting end side stock holding and conveying part 31 and the conveying start end part of the tip side latching conveying part 34. Thereafter, the intermediate stock holder holding conveyance unit 32 and the tip locking conveyance unit 34 convey the rear side of the machine body and toward the outer side of the machine body. At this time, it is conveyed while being pressed and guided by the tip conveyance guide 35 so that the tip side moves along the tip guide plate 42 rather than the tip locking and conveying section 34 acting. Then, when the terminal side stock holding and conveying unit 33 is reached, the hook conveying claw 34b of the tip holding and conveying unit 34 moves away from the terminal side stock holding and conveying unit 33 toward the inside of the machine body, so that the tip side is the stock side. The posture is changed to the lying posture positioned on the inner side of the machine body, the stock side is fed to the lower side of the guide rail 36 from the terminal side stock holding and transporting portion 33, and the guide rail 36 is pressed and guided to transport the threshing feed chain 11 Supply to the beginning.

  The intermediate stock holding and conveying unit 32 is configured to swing and be adjusted by a drive mechanism (not shown) around the axis located on the conveyance start end side to adjust the handling depth in the threshing device 4. is there. That is, when the swing adjustment of the intermediate stock holding and transporting unit 32 is performed, the slimming portion that the terminal stock holding and transporting unit 33 holds the cereal straw supplied from the intermediate stock holding and transporting unit 32 is before the adjustment. The slimming portion that the threshing feed chain 11 inherits and holds from the terminal side stock holding and conveying unit 33 changes to the stock side and the tip side and is inserted into the handling room of the threshing device 4 The tip side length of the harvested cereal grains changes.

  Each of the locking conveyance guide rail 41, the fourth holding conveyance guide rail 40, the tip conveyance guide 35, and the guide rail 36 of the conveyance device 30 is configured to be supported by a support frame 45 shown in FIGS. is there.

  As shown in FIGS. 1 and 6 to 12, the support frame 45 extends over a positioning bracket 43 a attached to an intermediate portion of the support frame 45 and a bracket 43 b attached to the transmission case 16 by being vertically raised. Are supported by a support arm 44 mounted in a vertical direction, the frame of the pretreatment section is raised vertically, and extends from the intermediate portion of the transmission case 16 toward the rear of the machine body. The tip transport guide 35, the guide rail 36, and the fourth clamping transport guide rail 40 and the locking conveyance guide rail 41 are structured such that the guide rail support portion 46 provided to support the fourth clamping conveyance guide rail 40 on the free end side of the support frame 45, and the free end side of the support frame 45 The guide support portion 45b provided to support the locking transport guide rail 41 and the tip transport guide 35, and the support frame 45 It is constituted by a rail support part 45c provided to support the guide rails 36 on the end side.

  The guide rail support portion 46 slidably supports a pair of mounting rods 72 extending from the fourth nipping / conveying guide rail 40 and is slidably biased toward the endless rotating chain 33a by a coil spring 73. By doing so, the 4th clamping conveyance guide rail 40 is supported so that it may approach or separate with respect to the termination | terminus endless rotation chain 33a according to the volume of conveyance grain.

  The guide rail support portion 46 includes a fixed frame 70 fixed to the support frame 45, a U-shaped mounting frame 71 held by the fixed frame 70, and a pair of slidably held by the mounting frame 71. A rod 72 and a coil spring 73 that is inserted into the rod 72 and accommodated in the mounting frame 71, and the fourth nipping and conveying guide rail 40 is connected to the end of the pair of rods 72 via a pin 40 a. It is attached so as to be biased toward the endless endless rotating chain 33a side so as to be separable according to the volume of the transporting culm while being biased to keep a predetermined distance with respect to the transporting line of the moving chain 33a.

The fixing frame 70 is provided with an engaging pin 74 at the front and rear center portion of the bent piece 70a on the rod extending side, with a narrow front and rear width dimension that does not contact the pair of coil springs 73 inserted through the rod 72. A pair of long bolts 75 are inserted into the opposed bent pieces 70b and fastened with a stepped nut 77.
The mounting frame 71 is provided with a circular hole 78 through which the engaging pin 74 is inserted in the front and rear central portion of the bent piece 71a on the rod extending side, and a little in the front and rear direction for rod insertion near the front and rear ends. A long long hole 79 is formed, and a swing support shaft 80 of the cover 50 is fixed to the outer surface of the bent piece 71a on the rod extending side. The opposing bent piece 71b is formed with a circular hole 81 having a size capable of inserting the pair of nuts 77 and a pair of circular holes 82 for inserting the rod. On the outer surface of the bent piece 71b, one end is pivotally supported by a pin 83, a notch 84 for fixing the mounting frame 71 is formed, a fixing means 85 including a fixing pin on the free end side, and an operation gripping portion 86. A fixing lever 87 is attached.
The pair of rods 72 is provided with a pin hole through which a split pin 88 serving as a stopper is inserted in the middle portion in the longitudinal direction, and a coil spring 73 is inserted together with spring receiving washers 89 at both ends.

The guide rail support 46 is assembled as follows. A rod 72 to which the fourth clamping conveyance guide rail 40 is attached is inserted into the rod 72 with the coil spring 73 and the spring receiving washers 89 at both ends interposed between the pair of bent pieces 71 a and 71 b of the attachment frame 71. The split pin 88 is fitted into the formed pin hole. In this state, the attachment frame 71 assembled with the fourth holding and conveying guide rail 40 can be attached to and detached from the fixed frame 70. In order to attach the mounting frame 71 to the fixed frame 70, the engagement pin 74 attached to the bent piece 70 a of the fixed frame 70 is passed through the circular hole 78 of the bent piece 71 a of the mounting frame 71, and the mounting frame 71 is folded. A nut 77 that is screwed into a pair of circular holes 78 of the bent piece 71b in a temporarily fixed state is inserted into the circular hole 78 so that the mounting frame 71 is aligned. The pair of notches 84 are operated to engage the small diameter stepped portion of the nut 77 and the nut 77 is tightened to insert the pin tip of the fixing means 85 into the hole 90 of the bent piece 71b. Thus, the mounting frame 71 is fixed to the fixed frame 70 by fixing the lever 87 so as not to swing. The fixing means 85 is formed of a pin that protrudes several millimeters from the lever 87. By loosening the nut 77 and moving the lever 87 away from the plate surface of the bent piece 71b, the elasticity of the lever 87 is increased. The pin 85 can be detached from the hole 90 by using it. Reference numeral 91 is a spacer attached to the mounting frame 71.
When removing the guide rail support 46, the nut 77 is loosened, the pin of the fixing means 85 is removed from the hole 90, and the fixing lever 87 is opened. In this state, the mounting frame 71 can be removed together with the cover 50 by pulling it out from the engaging pin 74 and the bolt nuts 75 and 77.

The rail support portion 45c supports the base end portion of the guide rail 36 so that the guide rail 36 is pivoted, so that the guide rail 36 swings up and down with respect to the threshing feed chain 11 in accordance with the volume of the transporting cereal. is doing. The rail support 45c is provided with a cereal clogging sensor 49 that inherits the cereal in the feed chain 11.
The swing support shaft 80 fixed to the mounting frame 71 supports a cover 50 that covers the upper part of the conveying start end of the threshing feed chain 11 so as to be swingable up and down. The weight of the cover 50 allows the guide rail 36 to move freely. The end side is urged against the threshing feed chain 11.

  The fourth holding / carrying guide rail 40 holds the harvested cereal grains from the intermediate stock holding / carrying part 32 with the terminating-side endless rotating chain 33a so as to oppose the conveying action part of the terminating-side endless turning chain 33a. The transporting guide rail 41 has a transporting path for locking and transporting the harvested cereal from the transporting end side of the endless rotating chain 34a by the transporting end side of the endless rotating chain 34a. The tip transport guide 35 is formed close to the guide surface of the tip guide plate 42 and forms a tip transport path between the tip guide plate 42 and the guide guide 42. The guide rail 36 functions so that the extended end side enters the upper side of the conveying start end portion of the threshing feed chain 11 and guides the cereal straw from the terminal side stock holding and conveying portion 33 to the threshing feed chain 11.

  The front end portion 35a of the tip transfer guide 35 and the front end portion 41a of the locking transfer guide rail 41 are connected to the tip guide plate 42 that guides the tip side of the cereal that is conveyed by the endless rotating chain 34a of the tip locking transfer portion 34. The held support rod 64 is fixedly supported by bolts 27 and 28, respectively.

  When the cereal clogging sensor 49 detects clogging of the cereal, the engine (not shown) is automatically stopped to light a lamp (not shown) provided in the operation unit 2. A buzzer is sounded. When the cereals are clogged, the fixing frame 85 of the guide rail support 46 and the nut 77 fixing the mounting frame 71 are loosened to disengage the fixing means 85 and open the fixing lever 87. Then, the guide rail support portion 46 is removed together with the fourth nipping / conveying guide rail 40 and the cover 50, and the work of removing the clogged cereals at the joint portions of the endless rotating chain 33a and the feed chain 11 is performed.

Side view of combine front A plan view showing a pre-treatment section reaping device Side view showing reaping device and reaping drive mechanism Exploded view showing the mowing drive mechanism Schematic plan view of a grain feeder Side view showing guide rail mounting structure Top view of guide rail support structure Cross-sectional plan view showing details of guide rail support Side view of guide rail support (A) is a longitudinal rear view showing the mounting state of the guide rail support portion, (b) is a longitudinal rear view showing a state where the mounting frame of the guide rail support portion is removed. (A) is a side view showing the mounting state of the guide rail support part, (b) is a side rear view showing the state where the mounting frame of the guide rail support part is removed. Partial side view showing the attachment structure of the starting end of the tip transfer guide and the locking transfer guide rail

Explanation of symbols

9 Mowing machine 12 Main frame 13 Lower horizontal frame (transmission case)
14 Weeding frame 15 Mowing frame 25 First reinforcing member (reinforcing plate)
26 Second reinforcement member (round pipe frame)
58 Cutting blade drive arm

Claims (2)

A harvester structure for a combine that includes a clipper-type trimming device on a pretreatment unit frame that can be moved up and down at the front of the traveling machine body,
The pre-processing unit frame includes a main frame that is connected to a support unit on the side of the traveling machine body so as to be rotatable about a laterally horizontal axis, and a lower horizontal frame that is connected to an extended lower end of the main frame, An outer weed frame extending forward from the left and right outer sides of the lower horizontal frame, and a cutting frame connected between the left and right outer weed frames spaced forward from the lower horizontal frame; A plurality of inner weeding frames extending forward from the cutting frame toward the aircraft body, and mounting the cutting device on the cutting frame;
A first reinforcing member is fixed across the lower horizontal frame and the cutting frame inside the left and right outer weed frames and outside the plurality of inner weed frames, and the lower horizontal frame A harvesting part structure for a combine, wherein a second reinforcing member is fixed between the first reinforcing member and the outer weed frame at a position between the cutting frame and the cutting frame.   The combine harvester structure according to claim 1, wherein an arm for driving the cutting blade of the harvesting device is pivotally supported by the first reinforcing member.

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