JP2013048632A - Combine harvester - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a combine harvester which can surely eliminate stock cracking while being capable of easily increasing the number mowing threads without increasing the number of times of the installation of traction cases.SOLUTION: Chain hang-out members 87 are arranged at right lateral sides of lower driven wheels 84 of the right traction case 25B, and only lower parts of tine chains 82 of the right traction case 25B are wound with the two wheels 84 and 87. Lateral moving zones for linearly laterally moving right traction tines 26B are formed between the lower driven wheels 84 of the right traction case 25B and the chain hang-out member 87. A mower 8 further comprises grass-dividing plates 24 which are arranged in front of each traction case 25A, 25B and 25C. The grass dividing plates 24 in front of the right traction case 25B are shifted to the right outside at which the right traction cases do not overlap with the lower driven wheels 84 of the right traction case 25B and the chain hang-out members 87 in a front view, and made to protrude toward the right outside so as to be inclined as progressing toward the tip side from the base end side which is close to a drive operation part.

Description

  The present invention relates to a combine that continuously harvests and thresh cereal grains in a field.

  Conventionally, a chain for attaching the pulling tine is stretched inside via the upper drive wheel and the lower driven wheel, and the chain is rotated so that each pulling tine protrudes to the outside at the lower turning part and the upward straight running part. The same number of pulling cases that act on the cereals as the number of cutting lines are placed side by side in a rearward tilted position on the front part of the cutting part, and at the same time the uncut cereals are raised after weeding. When cutting the uncut grain with a blade, the upper part is supported to help the cutting.

JP 2001-95354 A Japanese Utility Model Publication No. 61-105443 JP 2001-37314 A

  In the prior art, since the same parts are used except that there are parts that are reversed left and right in order to share the components of each pulling case part, for example, the most trimmed side In the pulling case, there was a problem that uncut grain was generated due to the poor pulling of the uncut grain culm on the most trimmed side due to the lack of the lower turning radius at the tip of the pulling tine.

  The invention according to claim 1 is a multi-strip that raises an uncut rice cake with a plurality of pulling tines (26A, 26B, 26C) in a cutting device (8) provided to be movable up and down at the front part of the machine base (3). A pulling case (25A, 25B, 25C) for mowing is provided, and a chain extending member (87) is provided on the right side of the lower driven wheel (84) of the right pulling case (25B), whereby each pulling case (25A , 25B, 25C) of the lower part of the tine chain (82) of the right pulling case (25B), only the lower part of the tine chain (82) is wound with two wheels (84) (87) and the right pulling case (25B). A lateral movement section (88) for linearly moving the right pulling tine (26B) in the middle of the lower circuit is formed between the lower driven wheel (84) and the chain extending member (87). The reaping device (8) In a combine that further includes a weed plate (24) disposed in front of the source (25A, 25B, 25C), the right weed case (25B) in front of the right weed plate (24) in the front view. It is biased to the right outer side that does not overlap the lower driven wheel (84) of the pulling case (25B) and the chain extending member (87).

  According to a second aspect of the present invention, in the combine according to the first aspect, the weeding board (24) in front of the right pulling case (25B) is moved from the proximal end side closer to the driving operation portion (14) to the distal end side. It is constructed so as to be inclined to the right outer side.

  According to the first aspect of the present invention, a plurality of pulling tines (26A, 26B, 26C) cause uncut cereal meals to be raised in a reaping device (8) provided at the front portion of the machine base (3) so as to be movable up and down. Each pulling case (25A, 25B, 25C) is provided by providing a chain extending member (87) on the right side of the lower driven wheel (84) of the right pulling case (25B). Of the lower part of the tine chain (82) of 25A, 25B, 25C), only the lower part of the tine chain (82) of the right pulling case (25B) is wound with two wheels (84) (87) and the right pulling case (25B) ) Between the lower driven wheel (84) and the chain overhanging member (87), a lateral movement section (88) for linearly moving the right pulling tine (26B) in the middle of the lower rotation, The reaping device (8) In a combine that further includes a weed plate (24) disposed in front of the pulling case (25A, 25B, 25C), the right weed plate (24) in front of the right pulling case (25B) is the right in front view. Since it is biased to the right outer side that does not overlap the lower driven wheel (84) of the pulling case (25B) and the chain overhanging member (87), the cutting strip does not increase the number of the pulling cases (25A, 25B, 25C). While the number can be increased easily, the stock split can also be resolved reliably. In particular, as in claim 2, the weed plate (24) in front of the right pulling case (25 B) is inclined to the right outer side as it goes from the base end side near the driving operation section (14) to the front end side. If the protruding structure is adopted, the above effect can be further improved.

  In addition, the uncut grain culm can be brought into an appropriate posture without causing the uncut grain culm to fall off from the pulling tine (26B, 26C) that circulates in the butting position in the adjacent pulling case (25B, 25C). It is possible to reduce the posture disorder of the uncut grain culm when cutting the stock with the cutting blade, and to improve the function of raising the grain culm of each of the erection cases (25A, 25B, 25C) with different amounts.

It is a side view of a combine. It is a top view of a combine. It is a front view of a combine. It is a side view of a cutting part. It is a top view of a cutting part. It is an enlarged plan view of a front part of a cutting part. It is a drive system figure of a cutting part. It is a front view of the right and left and the center raising case. It is a front view enlarged view of a right and center raising case. It is a partial enlarged plan view of a cutting blade. It is drive explanatory drawing of a cutting blade. It is sectional drawing of the knife head part of a cutting blade.

  Embodiments of the present invention will be described below in detail with reference to the drawings. 1 is a side view of the combine, FIG. 2 is a plan view of the combine, and FIG. 3 is a front view of the combine. In FIG. 1, 1 is a track frame on which a left and right traveling crawler 2 is installed, and 3 is installed on the track frame 1 The machine base 4 is a threshing unit that has the feed chain 5 stretched to the left and incorporates a handling cylinder 6 and a processing cylinder 7, and 8 is a reaping part that is a three-row reaping device equipped in front of the threshing part 4, 9 is a waste disposal unit that faces the end of the waste chain 10, 11 is a grain tank that carries the grain from the threshing unit 4 through the milled barrel 12, and 13 is a grain tank that carries the grain out of the grain tank 11. The discharge auger 14 is equipped with a round traveling handle 17 on the front side of the driver's seat 15 via the steering column 16 and the main transmission lever 19, the auxiliary transmission lever 20 and the threshing clutch on the left side column 18 of the driver's seat 15. Lever 21 and cutting Driving operation unit to arrange the latch lever 22, etc., 23 is an engine that arranged on the lower side of the driver's seat 15, and configured to threshing harvests field of culms continuously.

  4 is a side view of the cutting part, FIG. 5 is a plan view of the cutting part, FIG. 6 is an enlarged plan view of the front part of the cutting part, FIG. 7 is a drive system diagram of the cutting part, and the three-part cutting part 8 is , The same number of left and right and central three pulling cases 25A, 25B, 25C as the number of cut reapings that cause three uncut cereals to be taken in via the weed board 24 are laterally tilted to the front In this case, the left uncut wheat mash is left between the left pulling case 25A and the central pulling case 25C, and the left uncut wheat mash is lifted to the left. This is performed by a pulling tine 26A that protrudes rightward from 25A and moves from bottom to top, and the remaining two right uncut cereal meals are inserted between the right pulling case 25B and the central pulling case 25C. Pull the uncut cereals of the minute from the right pulling case 25B to the left and It is configured to perform the cause tine 26C moving from bottom to top protrudes from causing tine 26B and the central cause case 25C to the left of moving.

  In addition, a left star wheel 27A and a left rake belt 28A with protrusions are disposed at the lower rear side of the left elevating case 25A. In addition, a right star wheel 27B and a right rake belt 28B with protrusions are disposed on the lower rear side of the right raising case 25B. And a central star wheel 27C and a central scoring belt 28C with protrusions are placed at the lower rear of the central pulling case 25C. The right and central star wheels 27B and 27C and the protruding belts 28B and 28C are used to bring the right side of the uncut cereals of the right two ridges raised to the right pulling case 25B. Between the central pulling case 25C It is configured to merge take-in inlet passageway central rear.

  The right and left starwheels 27A, 28B, 28C and the scraping belts 28A, 28B, 28C are provided with a clipper-type cutting blade 29 that simultaneously cuts three roots of the uncut grain culm when it is scraped. The lower right transport chain 30 that transports the heel side of the two halves to the left diagonally backward, and the heel side and the tip side of the left halves of the halves are transported diagonally to the right rear and the heel side is to the right The lower left conveying chain 31, the upper left conveying tine 32, and the left tip conveying tine 33 to be merged in the vicinity of the feeding end portion of the lower conveying chain 30, and the three cuts that merge in the vicinity of the feeding end portion of the lower right conveying chain 30 A vertical transfer chain 34 and an upper transfer tine 35 for transferring the heel side and the tip side of the koji to the feed start end of the feed chain 5 of the threshing unit 4 are provided, and the lower right transfer chain 30 and the vertical transfer chain 34 are seen in a plan view. Nearly one A substantially straight lower conveyance path is formed from the lower rear of the right pulling case 25B to the feed start end of the feed chain 5, and the upper conveyance tine 35 is extended to the rear of the right pulling case 25B. A substantially straight upper transport path is formed from the rear of the case 25B to the feed start end of the feed chain 5, and is formed by the lower left transport chain 31 and the upper left transport tine 32 in the middle of the substantially straight vertical transport path. Facing the end of the left upper and lower conveying path extending from the rear of the left elevating case 25A diagonally to the right and facing the end of the left upper and lower conveying path by a lower-case y-shaped grain culm conveying path instead of an uppercase Y letter in plan view It is configured to carry the threshing process by being conveyed from the cutting unit 8 to the feed chain 5 of the threshing unit 4.

  In addition, a vertical transmission case 37 is provided which is a cutting main frame that projects between the traveling mission 36 fixed to the front end of the machine base 3 and the left traveling crawler 2 obliquely forward and downward from the front side of the threshing portion 4. 37, a bevel gear case 38 is fixed to the upper end portion, a chain case 39 is fixed to the left side of the bevel gear case 38, and a cutting portion is horizontally cut in the left-right direction of the body from the lower left side of the chain case 39 and the right side surface of the bevel gear case 38. The left and right reaping input cases 40A and 40B, which are the upper and lower pivot support points, are protruded and fixed on the same axis, and the reaping input cases 40A and 40B are turned to the left and right bearing bases 41A and 41B. Support freely.

  In addition, a front transmission bumper frame 43A, 43B is provided that includes a horizontal transmission case 42 that is integrally connected to the lower end of the vertical transmission case 37 and horizontally mounted horizontally at the bottom of the cutting unit 8 in the horizontal direction of the machine body. The left and right bumper frames 44A and 44B parallel to the longitudinal direction of the machine body constitute a horizontally long rectangular frame-shaped bumper 45 surrounding the lateral transmission case 42, and the lateral transmission case 42 is accommodated inside the bumper 45 in plan view. As described above, the bumper 45 is integrally attached directly below the lateral transmission case 42, and the front bumper frame 43 horizontally mounted in front of the lateral transmission case 42 is formed longer than the lateral transmission case 42 and the rear bumper frame 43B. The front bumper frame is provided in front of the horizontal transmission case 42 in a state in which the length is substantially the same as the grain interval of the stalk and the front bumper frame 43 protrudes to the right side from the horizontal transmission case 42. 43 is allowed to cross bar.

  Moreover, 45 A of left outer cutting frames which let pass between the left side grain stalk and the uncut side (left side) unsmoothed grain stub among the 3 stalk stalks to cut, and the 3 top stalks to cut The left inner cutting frame 45B that passes between the left cereal ridge and the middle cereal ridge, and the middle cereal ridge between the middle cereal and the right cereal ridge among the three culms to be cut 45C of right inner cutting frames 45C to be allowed to pass through and a right outer cutting frame 45D to be passed between the right side of the three chopped ridges to be cut and the already cut side (right side) of the chopped ridges. Four cutting frames 45A, 45B, 45C, and 45D are integrally extended in parallel from the front bumper frame 43 toward the front of the machine body.

  Then, the weed plate 24 is attached to the front end of each cutting frame 45A, 45B, 45C, 45D, and the lower part of the rear surface of the left pulling case 25A is supported by the left support pipe 46A that is erected and fixed to the left outer cutting frame 45A. The lower part of the rear surface of the case 25B is supported by a right support pipe 46B that is erected and fixed to the right outer trimming frame 45D, and the lower part of the rear surface of the center raising case 25C is supported by the central support pipe 46C that is erected and fixed to the left inner trimming frame 45B. From the upper surface of the bevel gear case 48 that is fixed to the front side of the lateral transmission case 47A and 47B and the lateral transmission case 42 that are integrally extended from the upper surface of the left and right end portions of the horizontal transmission case 42 in a forward inclined posture. A centrally raised transmission case 47C that is integrally extended upward in a forward leaning posture is provided, and left and right and central pulling cases 25A, 25B, 25 are provided. The upper rear surface is supported by left and right and center bevel gear cases 49A, 49B, and 49C, which are raised drive cases fixed to the upper ends of the right and left and center raising transmission cases 47A, 47B, and 47C, respectively. Two pulling cases 25A, 25B, 25C are arranged side by side in a rearward tilting posture on the front portion of the cutting portion 8 and supported upright.

  Further, the right and left star wheels 27A, 28B, and 28C and the scraping belts 28A, 28B, and 28C, the lower right conveyance chain 30, the lower left conveyance chain 31, the upper left conveyance tine 32, and the left tip conveyance tine 33 are cut. The front bumper frame is supported by the frames 45A, 45B, 45C, 45D and the elevating transmission cases 47A, 47B, 47C, etc., and the cutting blade 29 is horizontally fixed to the lower rear side of the cutting frames 45A, 45B, 45C, 45D. It is assembled on a cutting blade base 50 having a width substantially the same as the length of 43.

  Then, the cutting unit 8 is configured to move up and down with the left and right cutting input cases 40A and 40B as fulcrums by the expansion and contraction of the cutting lifting cylinder 51 stretched between the vertical transmission case 37 and the machine base 3.

  Further, the power of the cutting unit 8 is taken out from the PTO shaft 53 provided in the traveling mission 36 provided with the straight traveling HST 52A and the turning HST 52B in the input unit, and from the output shaft 54 of the engine 23 to the hydraulic pump shaft 55 of the straight traveling HST 52A. Power is transmitted by belt transmission, power is transmitted from the hydraulic pump shaft 55 of the straight traveling HST 52A to the hydraulic pump shaft 56 of the turning HST 52B, and each hydraulic motor of the straight traveling HST 52A and the turning HST 52B is appropriately driven to drive the power. Transmission to the mission 36, driving the left and right traveling crawlers 2 in the same rotational direction and the same rotational speed, straight forward traveling in the longitudinal direction, and left or right turning driving the left and right crawlers 2 in the reverse direction, and the same rotation of the left and right traveling crawlers 2 It is configured to perform a course correction for driving at different rotational speeds in directions.

  A cutting input shaft 57 is inserted into the left and right cutting input cases 40A and 40B, a cutting input pulley 58 is provided on the cutting input shaft 57 that protrudes from the right end of the right cutting input case 40B, and the PTO shaft 53 of the traveling mission 36 is provided. Power is transmitted to the cutting input shaft 57 in a belt transmission, and the belt transmission tension roller is used as a cutting clutch 59 so that the power can be freely disconnected. The cutting clutch 59 is turned on and off by the cutting clutch lever 22. A vertical transmission shaft 60 is inserted into the vertical transmission case 37, and a horizontal transmission shaft 61 is inserted into the horizontal transmission case 42. Power is transmitted from the intermediate portion of the cutting input shaft 57 to the upper end of the vertical transmission shaft 60 by bevel gear transmission. The power is transmitted from the lower end of the vertical transmission shaft 60 to the intermediate portion of the horizontal transmission shaft 61 by bevel gear transmission. In addition, left and right and center pulling transmission shafts 62A, 62B, and 62C are inserted into the left and right and center pulling transmission cases 47A, 47B, and 47C, and left and right ends of the horizontal transmission shaft 61 are left and right, and the transmission shafts 62A and 62B are A power transmission shaft 63 is provided which transmits power directly to the lower end by bevel gear transmission and takes out the power forward from the intermediate portion of the lateral transmission shaft 61 via the bevel gear, and is centrally raised from the front end of the transmission shaft 63 to the lower end of the transmission shaft 62C. Power is transmitted by bevel gear transmission, and the left and right and center pulling drive shafts 64A, 64B, and 64C are projected from the left and right and center bevel gear cases 49A, 49B, and 49C to the upper inside of the left and right and center pulling cases 25A, 25B, and 25C. Left and right and center pulling drive shafts 64A, 64B, 64C from the upper ends of the left and right pulling transmission shafts 62A, 62B, 62C. And it transmits power in bevel gear transmission to. Also, power is taken upward from the lateral transmission shaft 61 between the input portion in the middle of the lateral transmission shaft 61 and the right-handed output portion to the transmission shaft 62B, and the right lower conveyance chain 30 is driven by the drive sprocket 65. The lower left conveying drive shaft 66 is provided to be driven to rotate via the left lower conveying drive shaft 68 for extracting the power downward by the same chain transmission from the middle portion of the drive shaft 64A. 69, the left lower conveyance chain 31 is rotationally driven via a drive sprocket 70 provided at the lower end of the lower left conveyance drive shaft 68, and the upper left conveyance tine 32 is provided via a drive sprocket 71 provided at the upper portion of the upper left conveyance drive shaft 69. While driving to rotate, the left upper tip transport tine 33 is driven by taking out the power further upward from the upper end of the upper left transport drive shaft 69 via the bevel gear. It is provided to the left tip transport drive shaft 73 for rotationally driving through the Tsu bets 72. The left star wheel 27A and the take-in belt 28A are linked to the lower left transport chain 31 and are driven to rotate integrally therewith, and the right star wheel 28B and the take-up belt 28B are linked to the lower right transport chain 30. Thus, the central star wheel 28C and the scraping belt 28C are rotationally driven as the central star wheel 28C meshes with the right star wheel 28B and rotates. In addition, left and right cutting blade drive cases 75A and 75B for interpolating left and right crankshafts 74A and 74B, which are left and right cutting blade drive shafts for driving a cutting blade 29 described later, are provided from the front surfaces of the left and right ends of the lateral transmission case 42. While extending integrally forward, power is transmitted by bevel gear transmission from the left and right ends of the lateral transmission shaft 61 to the rear ends of the left and right crankshafts 74A and 74B.

  Further, the vertical conveyance chain 34 and the upper conveyance tine 35 are pivotally fitted to the end of a cylindrical shaft 76 that protrudes and is fixed in parallel with the left cutting input case 40A from the upper left side of the chain case 39. 77, the rear part is supported, the middle part is supported by the vertical transmission case 37 via a handle depth adjusting mechanism (not shown), and the vertical conveyance chain 34 and the upper conveyance tine 35 are integrated with the reaping part 8 to the left and right reaping input cases 40A, 40B. In addition to the cutting part 8, the vertical conveying chain 34 and the upper conveying tine 35 are configured to perform a handling depth adjusting operation in which the cylindrical shaft 76 is swung up and down. A horizontal transmission shaft 78 is inserted into the cylindrical shaft 76, power is transmitted from the left end portion of the cutting input shaft 57 to the right end portion of the horizontal transmission shaft 78 by the chain transmission in the chain case 39, and the vertical conveyance drive case 77 is longitudinally conveyed. A common vertical conveyance drive shaft 79 common to the chain 34 and the upper conveyance tine 35 is supported in a substantially vertical direction, and power is transmitted from the left end portion of the horizontal transmission shaft 78 to an intermediate portion of the vertical conveyance drive shaft 79 by bevel gear transmission. The vertical conveyance chain 34 is rotationally driven via a drive sprocket 80 provided at the lower end of the conveyance drive shaft 79, and the upper conveyance tine 35 is rotationally driven via a drive sprocket 81 provided at the upper end of the vertical conveyance drive shaft 79.

  FIG. 8 is a front view of the left and right and center pulling cases, and FIG. 9 is an enlarged front view of the right and center pulling cases. The pulling cases 25A, 25B, and 25C are fixed to the pulling tines 26A, 26B, and 26C. An upper drive sprocket 83, which is an upper drive wheel fitted to pulling drive shafts 64A, 64B, and 64C, in which a tine chain 82 that is undulated and mounted at a pitch is protruded to the upper inside of the pulling cases 25A, 25B, and 25C, and a pulling case 25A, 25B, and 25C are extended vertically in the lower direction via a lower driven roller 84, which is a lower driven wheel that is rotatably supported via a support shaft 84a, and left and center raising cases 25A. , 25C, the tine chain 82 is rotated clockwise at a predetermined speed when viewed from the front, and the tine chain 82 of the right pulling case 25B is rotated counterclockwise when viewed from the front. By rotating at the same speed as the chain 82, the pulling tines 26A, 26B, and 26C are placed on the tines 85 just before the lower turning part, and are erected at a substantially right angle from the tine chain 82. Is held via a tine guide (not shown) while moving the lower turning portion and the upward straight running portion, and the pulling tines 26A, 26B, and 26C are respectively raised in the lower turning portion and the upward straight running portion by the raising cases 25A, 25B, The left side of the left raising case 25A protruding from the left side case 25A and the central side case 25C is protruded rightward from the raising case 24A and moved from the bottom to the left side. The pulling tine 26 </ b> A causes the two right-hand uncut grains to rise between the right pulling case 25 </ b> B and the central pulling case 25 </ b> C, and the right pulling case 25 </ b> B protrudes leftward. It is configured to perform the cause tine 26C moving from bottom to top and protrudes leftward from causing tine 26B and the central cause casing 25C moving from bottom to top with.

  Further, the tension roller 86 of the tine chain 82 is raised to the lateral side of the downward rotation side of the drive sprocket 83, and can be swung up and down within a predetermined range with the drive shafts 64A, 64B, 64C as fulcrums. Is supported via a tension arm (not shown) that constantly biases upward, and the tine chain 82 is loosened by a tension roller 86.

  Then, a chain extending roller 87, which is a chain extending member, is provided on the lateral side of the lower driven roller 84 of the right pulling case 25B on the downward rotation side, and the left pulling tine 26B is rotated downward between the chain extending roller 87 and the lower driven roller 84. A lateral movement section 88 that linearly moves laterally in the middle of the line is formed, and the tine chain 82 of the left and center pulling cases 25A and 25C is stretched in a triangular shape with a three-point stretch of the upper one wheel and the lower two wheels. The tine chain 82 of the pulling case 25B is stretched in a quadrangular shape with four points on the upper two wheels and the lower two wheels, and the lower turning radius of the pulling tine 26B in the right pulling case 25B on the most trimmed side is raised to the side opposite to the working side. Is extended to the already-cutted side which is the opposite side of the working side. In this case, the tine chain 82 of the right pulling case 25B provided with the chain extending roller 87 is connected to the chain extending roller. The same tine chain 82 of the left and center pulling cases 25A, 25C without the 87 is used, and the pulling tine 25B of the pulling case 25B with the chain extending roller 87 and the chain extending roller 87 are not provided. In order to keep the relative positions of the cases 25A and 25C with the raising tines 26A and 26B constant, the lower driven roller 84 is rotated downward from the point where the upper driving sprocket 83 of the right raising case 25B turns from upward to downward. The distance from the point that turns to the upward rotation is the chain extension roller in the right pulling case 25B. 7 from the point of turning from the upward rotation to the downward rotation of the upper drive sprocket 83 of the left and center pulling cases 25A, 25C without the chain extension roller 87, from the downward rotation of the lower driven roller 84 to the upward rotation. The upper drive sprocket 83 and the tension roller 86 of the right extension case 25B provided with the chain extension roller 87 for the dimension T longer than the distance to the turning point are connected to the left and center extension cases 25A, It is provided at a position lower than the upper drive sprocket 83 and the tension roller 86 of 25C.

  FIG. 10 is a partially enlarged plan view of the cutting blade, FIG. 11 is a driving explanatory view of the cutting blade, FIG. 12 is a sectional view of the knife head of the cutting blade, and as shown in FIGS. Is formed by dividing one fixed blade part 89 having a cutting width for four lines and a movable blade part having a cutting width for four lines to be superimposed on the fixed blade part 89 into the right and left at a substantially central portion. The left and right movable blade portions 90A and 90B have a cutting width of approximately two strips, and the fixed blade portion 89 is formed by riveting a number of fixed blades 91 to the cutting blade base 50 at a constant pitch. The portions 90A and 90B include a knife bar 92 having a width approximately half that of the cutting blade base 50, a large number of movable blades 93 that are riveted from end to end at the same pitch as the fixed blade 91, and several movable blades 93. And a knife head 94 for riveting to the knife bar 92, and the cutting blade base 5 The left and right movable blade portions 90A and 90B are superimposed and supported on the upper surface of the fixed blade portion 89 so as to be reciprocally movable only in the left-right direction of the machine body by a plurality of blade pressers 95 that are fastened together with friction plates and adjusting plates with bolts and nuts. Yes.

  Further, the left cutting blade drive case 75A for inserting the main shaft (journal) 96A of the left crankshaft 74A, which is the left cutting blade drive shaft for reciprocally driving the left movable blade portion 90A from the front surface of the left end portion of the lateral transmission case 42, faces forward. A right cutting blade drive case that extends integrally and inserts a main shaft (journal) 96B of a right crankshaft 74B that is a right cutting blade drive shaft that reciprocally drives the right movable blade portion 90B from the front surface of the right end portion of the lateral transmission case 42. The base end of the crank arm 97A of the left crankshaft 74A is fitted and fixed to the front end of the main shaft 96A of the left crankshaft 74A in which 75B is integrally extended forward and protruded from the front end of the left cutting blade drive case 75A. The crank pin 98A of the left crankshaft 74A protrudes forward from the tip of 97A in parallel with the main shaft 96A, and in front of the right cutting blade drive case 75B. The base end of the crank arm 97B of the right crankshaft 74B is fitted and fixed to the front end of the main shaft 96B of the right crankshaft 74B protruding from the crankshaft 97B, and the crankpin 98B of the right crankshaft 74B is parallel to the main shaft 96B from the tip of the crank arm 97B. Projecting forward, the rear end of the main shaft 96A of the left crankshaft 74A faces the inside of the left end of the lateral transmission case 42, and the rear end of the main shaft 96A of the left crankshaft 74A is placed on the left end of the lateral transmission shaft 61. The bevel gears 99A and 99B are linked together and the rear end of the main shaft 96B of the right crankshaft 74B faces the inside of the right end portion of the lateral transmission case 42, and the main shaft 96B of the right crankshaft 74B faces the right end portion of the lateral transmission shaft 61. The rear ends are interlocked and connected via bevel gears 100A and 100B meshing in the same direction as the bevel gears 99A and 99B. The left crankshaft 74A composed of the rank arm 97A and the crankpin 98A and the right crankshaft 74B identical to the left crankshaft 74A composed of the main shaft 96B and the crank arm 97B and the crankpin 98B are rotated at the same speed in the same direction, and left If the phases of the left and right crankshafts 74A, 74B are 180 degrees or substantially 180 degrees different so that the rotational position of the crankpin 98A of the crankshaft 74A differs from the rotational position of the crankpin 98B of the right crankshaft 74B by 180 degrees or approximately 180 degrees. Rotate at the same speed in the same direction.

  A guide rail 101 having a U-shaped cross-section with the open portion directed rearward at the rear end of the knife head 94 of the left and right movable blade portions 90A is vertically fixed to the main shafts 96A and 96B of the left and right crankshafts 74A and 74B. In a state where the phases of the crankshafts 74A and 74B are different from each other by 180 degrees or approximately 180 degrees, the crankpin 98A of the left crankshaft 74A is fitted through the bearing 102A, and the crankpin 98B of the right crankshaft 74B is The left and right movable blade portions 90A and 90B are opposed to each other by the left and right crankshafts 74A and 74B that are fitted through 102B and rotated in the same direction and at the same speed with a phase difference of 180 degrees or approximately 180 degrees. Drives reciprocally, and in the direction orthogonal to the crankshafts 74A and 74B, along with the vibration in the left-right direction by the clipper-type cutting blade 29 Dynamic is also configured to reduce at the same time.

  Also, the left and right crankshafts are arranged so that the rotation trajectories of the shaft pins of the crankpins 98A and 98B of the left and right crankshafts 74A and 74B can be above the mating surface 103 of the fixed blade portion 89 and the left and right movable blade portions 90A and 90B. 74A and 74B are rotated above the mating surface 103 of the fixed blade portion 89 and the left and right movable blade portions 90A and 90B, and the left and right movable blade portions 90A and 90B are cut by applying a force to lift the blade edge from the fixed blade portion 89. It is configured to prevent the performance from being degraded.

  Further, the left cutting blade drive case 75A for inserting the main shaft (journal) 96A of the left crankshaft 74A, which is the left cutting blade drive shaft for reciprocally driving the left movable blade portion 90A from the front surface of the left end portion of the lateral transmission case 42, faces forward. A left cutting blade drive case that extends integrally and inserts a main shaft (journal) 96B of the left crankshaft 74B that is a left cutting blade drive shaft that reciprocally drives the right movable blade portion 90B from the front surface of the right end portion of the lateral transmission case 42. The left and right star wheels 27A and 27B are disposed below the left and right starwheels 27B, 27B, which is a scraping member that causes the entire left and right crankshafts 74A and 74B to be lifted and scraped into the cereal after the whole. Prevents the cutting performance from being lowered due to, for example, the cutting blade being caught on the shafts 74A and 74B, and prevents the left and right crankshafts 74A and 74B from adhering or winding. It is sea urchin configuration.

25A, 25B, 25C Pulling case 26A, 26B, 26C Pulling tine 82 Tyne chain 83 Upper drive sprocket (upper drive wheel)
84 Lower driven roller (lower driven wheel)
87 Chain overhang roller (Chain overhang member)

Claims (2)

Pulling case (25A) for multi-row cutting that raises uncut cereals with a plurality of pulling tines (26A, 26B, 26C) in a reaping device (8) provided to be movable up and down at the front of the machine base (3) , 25B, 25C), and a chain extending member (87) is provided on the right side of the lower driven wheel (84) of the right pulling case (25B), so that the tine chain of each pulling case (25A, 25B, 25C) is provided. (82) Of the lower part, only the lower part of the tine chain (82) of the right pulling case (25B) is wound with two wheels (84) (87), and the lower driven wheel (84) of the right pulling case (25B) is wound. ) And the chain overhanging member (87), a lateral movement section (88) for linearly moving the right pulling tine (26B) in the middle of lower turning is formed, and the cutting device (8) Each pulling case (25A, 2 B, in further comprising combine the partial grass plate (24) disposed in front than 25C),
The weed plate (24) in front of the right pulling case (25B) is biased to the right outer side so as not to overlap the lower driven wheel (84) and the chain extension member (87) of the right pulling case (25B) in front view. ing,
Combine. The weed plate (24) in front of the right elevating case (25B) is configured to protrude obliquely to the right outer side as it goes from the base end side near the driving operation portion (14) to the front end side,
The combine according to claim 1.

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