JP2006254850A - Reaping blade apparatus and reaping apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve problems in which the lateral width of a conventional inner end movable blade positioned on innermost side of a reaping blade apparatus is nearly half of other unit movable blade and causes vibration in the longitudinal direction to advancing direction of a combine harvester which is incidental to operation and reduction of endurance. <P>SOLUTION: The reaping blade apparatus 22 is constituted so as to divide movable blade parts 31A/31B superposed on a fixed blade part 30 arranged in left and right directions and slid in left and right directions in nearly center of a machine width and reciprocate the divided blade parts to left and right opposite directions, and the movable blade parts 31A/31B are each composed of a plurality of unit movable blades 39 and inner end movable blade 43 and the inner end movable blade 43 positioned on the innermost side of the reaping blade apparatus 22 is obtained by integrally forming a blade 50 having an isosceles triangle shape with a blade 51 having a right triangle shape. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a combine cutting blade device and a reaping device technology for harvesting and threshing cereal grains in a field.

  Conventionally, a harvesting operation using a combine has been done by arranging a harvesting device at the front of the machine body, causing a culm by a tine of a trigger case disposed at the front of the harvesting device, and causing a trimming at the lower part behind the case. The blade is cut by the blade, and the cut straw is transported rearward and upward by a transport unit disposed at the rear of the reaping device and delivered to the feed chain of the threshing unit.

  The cutting blade includes a fixed blade portion and a movable blade portion slidably disposed on the fixed blade portion, and the movable blade portion disposed in the left-right direction of the machine body is reciprocated in the left-right direction. Similarly, a fixed blade portion is disposed in the left-right direction of the machine body at the lower portion of the machine, and is configured in such a shape as a clipper so as to cut the plant stock such as rice and wheat with both the upper and lower blades. In addition, the driving force of the movable blade portion is configured to transmit to the cutting crank, the rod, the cutting arm, and the knife head in order from the cutting transmission shaft arranged in the horizontal direction in the cutting frame. The movable blade portion fixed to the lower part of the knife head is configured to reciprocate by reciprocating motion.

For example, as shown in Patent Document 1, a pair of left and right movable blade portions are superposed on the upper surface of one left and right fixed blade portion, and the pair of left and right movable blade portions are driven to reciprocate in directions opposite to each other. There is a combine cutting blade device including the cutting blade device.
JP 2004-16203 A

  The above-mentioned fixed blade part and movable blade part are long, for example, those used in a six-row combine combine, etc., since the overall length is particularly long, when used in this long state, During the reciprocating motion of the movable blade part with respect to the fixed blade part, the movable blade is easily vibrated or rubbed and easily damaged.

  In addition, there is a possibility that a gap is formed between the fixed blade part and the movable blade part due to the floating of the movable blade part in the part of the movable blade part where the blade presser does not act, and sharpness deterioration and clogging of the stems may occur. The knife bar may be locally worn due to sliding contact with the blade holder, and the movable blade portion may be rattled, leaving room for improvement in terms of cutting performance and durability.

  Further, the conventional inner end movable blade located on the innermost side of the cutting blade device has only about half the width compared to other unit movable blades, and the vibration in the front-rear direction with respect to the traveling direction of the combine that occurs accompanying the work. There were problems such as durability.

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

  That is, according to the first aspect of the present invention, there is provided a cutting blade device for agricultural machinery in which a movable blade portion that is superposed on a single fixed blade portion is moved at a substantially central portion of the machine width and reciprocated in opposite directions. Thus, the inner end movable blade positioned on the innermost side of the cutting blade device and the unit movable blade adjacent thereto are integrally formed.

  According to a second aspect of the present invention, the inner end side edge of the inner end movable blade is formed so as to be orthogonal to the moving direction of the movable blade portion.

  In Claim 3, the unit center fixed blade located between the said left and right inner end movable blades is arrange | positioned between a pick-up mechanism and a weed board.

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

  In claim 1, the inner end movable blade and the unit movable blade arranged next to the inner end movable blade are integrally formed, and the surface area of the formed inner end movable blade is increased. The support rigidity of the inner portion of the can be increased and can be supported stably. Therefore, the vibration generated when the movable blade portion is reciprocated left and right with respect to the fixed blade portion during the cutting operation can be reduced, and the durability can be improved.

  In claim 2, when the left and right inner end movable blades reciprocate in opposite directions and are positioned on the central unit fixed blade, the inner end side edge of the inner end movable blade is relative to the moving direction of the movable blade portion. The cross section of the inner end side edge of the left and right inner end movable blades can be wider than before, reducing the biting of foreign matter and cutting the cereal It is possible to eliminate the non-cutting area where no chopping is performed, and to effectively eliminate the uncut portion of the cereal.

  In claim 3, the cereals planted in the field are weeded by a weed board, and are caused by a cereal pulling device. It is carried to the fixed blade and can reap the stock of cereal by reciprocating movement of the left and right movable blade portions.

Next, embodiments of the invention will be described.
1 is a side view showing the overall configuration of a combine according to an embodiment of the present invention, FIG. 2 is a plan view of the same, FIG. 3 is a side view of the reaping device, FIG. 4 is a plan view of the reaping device, and FIG. Is an enlarged plan view of the front part of the cutting device, FIG. 6 is a drive system diagram of the cutting device, FIG. 7 is a plan view of the cutting blade device, FIG. 8 is a sectional view taken along line XX in FIG. FIG. 10 is a plan view of a central portion of the cutting blade device, and FIG. 11 is an enlarged plan view of a conventional inner end movable blade and a unit movable blade adjacent thereto.

The overall structure of the combine according to the present invention will be described with reference to FIGS.
In FIG. 1, a combine 1 has a body frame 3 disposed on left and right traveling devices 2, 2 equipped with a crawler type traveling device, and a cutting device 4 is connected to a front end portion of the body frame 3 by a hydraulic cylinder 5. 6 is arranged so as to be movable up and down around the cutting fulcrum shaft 7.
A threshing unit 10 provided with a feed chain 9 is disposed immediately after the cereal conveyance mechanism 8 in the reaping device 4, and a swing selection unit is disposed immediately below the threshing unit 10, and a rear part of the threshing unit 10. The waste disposal apparatus 12 is disposed on the side. The waste disposal device 12 includes a cutter device 14 and the like that expose the end of the waste chain 13.

  A driving cabin 17 having a driving operation unit 15 and a driver's seat 16 such as a steering wheel, a shift lever, a work lever, and a steering handle for steering is disposed at the front of the body frame 3 and on the right side in the traveling direction. A grain tank 18 for storing the grain after threshing and sorting is disposed immediately after the operation cabin 17. A discharge auger 19 for carrying out the stored grain to the outside of the machine body is connected to the rear part of the grain tank 18. In addition, an engine room that houses an engine 20 or the like serving as a power source is disposed below the operation cabin 17.

The reaping device 4 includes a weed plate 21 disposed at the front end of the reaping frame 6, a cutting blade device 22 disposed at the rear of the weed plate 21, and a culm pulling device disposed above the weed plate 21. Etc.
Then, the cereals planted in the field are weeded and taken up by the weeding board 21, and are caused by the cereal wakening device, and the stock of the cereal is reaped by the cutting blade device 22. Thereafter, the cereals are transferred to the cereal transporting mechanism 8, sandwiched by the cereal transporting device 8 and transported backward, and the stock is transferred to the feed chain 9 of the threshing unit 10.

  The threshing unit 10 includes a handling chamber 23 and a processing chamber 24. The handling chamber 23 is internally provided with a handling cylinder 25 that is pivotally supported in the front-rear direction of the machine body, and a receiving net 26 is stretched below the handling cylinder 25. It is built. The processing chamber 24 communicates with the front portion of the processing chamber 24 through a dust exhaust port disposed on the rear side of the processing chamber 23, and a processing cylinder 27 is installed in the processing chamber 24 in the front-rear direction. Grains and the like that could not be threshed by the handling cylinder 25 are reprocessed. A processing net 28 is stretched below the processing cylinder 27.

  On the side surface portion of the threshing upper surface cover that forms the handling chamber 23, a claw (not shown) that clamps the stock side of the cereal with the feed chain 9 is provided. And while holding the stocker side of the grain culm inherited from the grain culm transporting mechanism 8 of the reaping device 4 between the feed chain 9 and the culm, the tip side of the culm is passed into the handling chamber 23. Threshing is performed using a plurality of teeth (not shown) disposed on the outer periphery of the barrel 25.

  The threshing and reprocessed grains pass through the receiving net 26 or the processing net 28 and reach the lower swing sorting unit, while the waste is conveyed to the rear waste disposal device 12. .

  As shown in FIG. 3 or FIG. 4, left and right cutting attachment frames 55 are erected on the front side of the threshing portion 10 from the front end of the body frame 3, and a split pipe joint 56 is provided on the upper portion of each cutting attachment frame 55. Yes. Further, a cutting input case 58 is provided in the cutting device 4, and a cutting input shaft 57 that transmits power from the engine 20 is inserted into the cutting input case 58. The reaping input case 58 is rotatably and detachably held at the upper ends of the left and right reaping mounting frames 55 via the split pipe joints 56 at both ends thereof, and immediately before the threshing portion 10 in the lateral direction of the machine body. Horizontally supported horizontally.

  A longitudinal transmission case 59 is integrally extended from the intermediate portion of the cutting input case 58 toward the front obliquely downward direction, and a lateral transmission case 60 is integrally connected to the tip of the longitudinal transmission case 59 at the intermediate portion in the lateral direction of the body. Horizontally supported horizontally. The horizontal transmission case 60 is integrally connected to the horizontal transmission case 60 by the horizontal connection frame 61 and is integrally connected at the rear part to the six cutting frames 6. The horizontal transmission case 60 extends integrally in parallel from the horizontal transmission case 60 toward the front of the machine body. ing.

  Thus, the cutting input case 58, the vertical transmission case 59, the horizontal transmission case 60, and the cutting frame 6 are integrated to form the main frame of the cutting device 4, and the configuration of the cutting device 4 described later on the main frame. The mowing apparatus 4 is configured by assembling elements. The reaping device 4 is configured to move up and down about the reaping input case 58 by expansion and contraction of the hydraulic cylinder 5 stretched between the body frame 3 and the vertical transmission case 59.

  The 6-row mowing device 4 is provided with a culm transporting mechanism 8 including a pre-processing mechanism, a scraping mechanism, a mowing mechanism, a cereal stock former transporting mechanism, and a cereal head transporting mechanism. . The pre-processing mechanism erects the six slicing plates 21 for separating the cereals to be harvested and the unsown cereals and separating each sown of the sown cereal, and the uncut cereals after weeding. It comprises six pulling cases 64 having six pulling tines 63.

  The rake mechanism is a pair of right rakes which are a pair of right and left rakes that scrape the stock base part of the grain ridges 62R of the two right ripened grains introduced from between the two right erection cases 64 into one bundle. A right star wheel 65R that is a ring, a right scraping belt 66R that is a pair of right and left protruding belts, and a left cereal grain 62L that is introduced from between the two left raising cases 64 The left star wheel 65L, which is a pair of left and right left-handed wheels, and a pair of left and right left-handed belts 66L, which is a pair of left protrusions, A central star wheel that is a pair of left and right central stirring wheels that scrape the stock base portion of the cereal halves 62C of the middle two stubs introduced from between the two pulling cases 64 into one bundle. 65C and a pair of left and right paired central protrusion belts 66C, which is a pair of belts with a central protrusion. It is.

  The cutting mechanism is composed of a clipper-type cutting blade device 22 that simultaneously cuts six stocks of cereal grains at the time of scraping.

  Of the corn straw transporting mechanism 8, the grain stalk stock transporting mechanism is left-handed to the stock base part of the right two reaped harvested grain straws 62 </ b> R that have been scraped by the right star wheel 65 </ b> R and the right scraping belt 66 </ b> R. The right stock former confluence carrying chain 67R that holds and conveys the rear upper part, and the stock base part of the two left-handed harvested grain straws 62L that have been scraped by a pair of the left star wheel 65L and the left take-up belt 66L A left stock former confluence conveyance chain 67L that is nipped and conveyed upward and merges with the conveyance end portion of the right stock confluence conveyance chain 67R, a pair of right star wheels 65R and a right take-up belt 66R, and a pair of left star wheels. A pair of central star wheel 65C disposed between 65L and the left rake belt 66L and the center part of the cereals 62C for the two middle chopped portions by the central rake belt 66C are Stock former merge transport chain 67L ・ 6 Central stock merging where it is sandwiched and transported to the upper part after the right slant and is located between R, and merges before the joint part with the stock base part of the harvested rice cake 62L for the left two strips of the right stock former merge transport chain 67R The stock ends of the six harvested cereal grains 62L, 62R, and 62C joined by the transport chain 67C and the left and right stock former confluence transport chains 67R, 67L, and 67C are transferred to the right stock former confluence transport chain 67R. Stock transfer chain 68 that is a vertical transfer chain that is inherited from the transfer section and is held and transferred to the upper part of the threshing unit 10 by being clamped and transferred to the upper part of the threshing unit 10, and a transfer end portion of the stock source transfer chain 68 To the feed start end of the feed chain 6 is composed of auxiliary stock former feed chains 69a and 69a which carry and inherit the stock base parts of the six reaped grain straws 62L, 62R and 62C in an appropriate posture.

  On the other hand, the grain tip transport mechanism is a right tip transport device 70R that latches and transports the tip of the right-hand two-line harvested grain cocoon 62R that sandwiches and transports the stock base by the right stock confluence transport chain 67R; The left head transfer device 70L that latches and transports the tip of the harvested cereal rice bran 62L for the left two strips that nipping and transporting the stock base by the left stock confluence transport chain 67L, and the central stock former confluence transport chain 67C The stock head part is sandwiched between the center tip transport device 70C that latches and transports the head part of the cereal crops 62C for the middle two strips, and the stock source transport chain 68 and auxiliary stock transport chains 69a and 69b. The rear-tip conveying device 71 that latches and conveys the tips of the six chopped grain straws 62L, 62R, and 62C to be conveyed, and the two right-side portions after raising that are introduced from between the two right-side raising cases 64 Ear of cereal rice bowl 62R Is introduced from between the upper right tip transfer device 72R that is locked and transferred on the opposite side of the right tip transfer device 70R above the transfer start end of the right tip transfer device 70R, and between the two left pulling cases 64 The upper left tip conveying device 72L for engaging and conveying the tip of the grain ridge 62L for the left two lanes on the opposite side of the left tip conveying device 70L further above the conveying start end of the left tip conveying device 70L, The tip of the cereal cocoon 62C for the two middle strips after being introduced between the two pulling cases 64 is engaged further above the transfer start end of the central tip transfer device 70C on the opposite side of the central tip transfer device 70C. The center upper tip conveying device 72C is configured to stop and convey.

  As shown also in FIG. 5, the left and right star wheels 65L, 65R, and 65C in the left and right and center groups are integrally attached to the lower ends of the left and right rotating shafts 108a and 108b, which are two parallel axes, respectively. The left and right star wheels 65L, 65R, and 65C are meshed with each other so as to be rotatable. In addition, the conveying terminal portions of the left and right scrambling belts 66L, 66R, and 66C in the left and right and center groups are wound and supported by a large-diameter pulley 109 that is integrally attached to the upper ends of the left and right rotating shafts 108a and 108b. The conveyance start end portion is wound and supported by a small-diameter pulley 110 that is pivotally supported in front of the large-diameter pulley 109, and the left and right scraping belts 66L, 66R, and 66C of the same set are greatly opened forward. Is stretched.

  Then, power is transmitted to one of the left and right rotating shafts 108a and 108b, and the rotating shaft 108a or 108b is driven to rotate so that the star wheel attached to the rotating shaft 108a or 108b. 65L / 65R / 65C and the drive belts 66L / 66R / 66C are driven to rotate, and the star wheels 65L / 65R / 65C and the drive belts 66L / 66R / 66C attached to the other rotary shaft 108a or 108b are driven to rotate. The left and right star wheels 65L, 65R, and 65C and the take-up belts 66L, 66R, and 66C and the right star wheels 65L, 65R, and 65C and the take-up belts 66L, 66R, and 66C in the same set are rotated in the opposite directions, The cereals 62L, 62R, and 62C are scraped.

  The driven sprocket 111R is engaged with an intermediate portion of the right rotation shaft 108b to which the right star wheel 65R and the right take-up belt 66R are attached, out of the pair of right star wheel 65R and the right take-up belt 66R. The transfer start end of the right stock former confluence transfer chain 67R is wound and supported on the driven sprocket 111R. The right stock merging / conveying chain 67R includes a pair of right and left star wheels 65R and a right take-up belt 66R, and a right transmission case 59 and a side transfer case 60 between the right star wheel 65R and the take-up belt 66R. Is extended to a position substantially above the connecting portion.

  Of the pair of left and right star wheels 65L and 66L, a driven sprocket 111L is supported on the intermediate portion of the left rotating shaft 108a to which the left star wheel 65L and the left stirring belt 66L are attached. The conveyance start end portion of the left stock former confluence conveyance chain 67L is wound and supported on the driven sprocket 111L. The left stock merging and conveying chain 67L includes a pair of left and right star wheels 65L and 66L, and a pair of left and right star wheels 65L and 66L between the left and right star wheels 65L and 66L. Is stretched up to just before the conveyance end portion of the right stock former confluence conveyance chain 67R at a position substantially above the connection portion.

  Of the pair of right and left central star wheels 65C and central scraping belt 66C, a driven sprocket 111C is supported on the intermediate portion of the left rotating shaft 108a to which the left star foil 65C and left scraping belt 66C are attached. Then, the conveyance start end portion of the central stock merger conveyance chain 67C is wound and supported on the driven sprocket 111C. The central stock merging / conveying chain 67C includes a pair of left and right star wheels 65C and 66C between the pair of left and right star wheels 65C and 66C. At the upper end of the connecting portion to the left end of the left stock former confluence carrying chain 67L before the joining portion of the right stock former conjoining transport chain 67R with the stock base portion of the left-hand two-line harvested rice cake L. It is stretched until just before.

  Thus, the left and right and center star wheels 65L, 65R, and 65C and the take-up belts 66L, 66R, and 66C are configured to rotate by the rotation of the right and left and center stock merge transfer chains 67L, 67R, and 67C. The central star wheel 65C and the scraping belt 66C are arranged in a state of being shifted to a position one step higher than the left and right star wheels 65L and 65R and the scraping belts 66L and 66R. It is configured not to interfere with the 65R and the take-in belts 66L and 66R.

  As shown in FIG. 6, the vertical transmission shaft 59 is inserted into the vertical transmission case 59, the horizontal transmission shaft 76 is inserted into the horizontal transmission case 60, and the vertical transmission is provided at the intermediate portion of the horizontal transmission shaft 76. The lower end of the shaft 75 is interlocked and connected via a bevel gear. Then, the upper end of the vertical transmission shaft 75 is interlocked and connected to the cutting input shaft 57 via a bevel gear, and power is transmitted from the vertical transmission shaft 75 and the horizontal transmission shaft 76 to each of the components of the cutting device 4 to be driven. It is configured to be removed.

  From the left end portion of the horizontal transmission case 60, a pulling vertical transmission case 77 is erected in a forward inclined posture toward the upper position of the pulling case 64 in a side view, and rightward from the upper end portion of the pulling vertical transmission case 77. A pulling lateral transmission case 78 extends horizontally, and a pulling drive case 79 extends from the pulling lateral transmission case 78 downward for each pulling case 64. A lower portion of each pulling case 79 is disposed on the upper back side of each pulling case 64, and a pulling tine driving shaft 80 protrudes from the lower end of each pulling case 79 to the inner upper portion of each pulling case 64. A protruding tine drive sprocket 81 is provided at the protruding portion of the pulling tine drive shaft 80, and the upper part of the tine chain is wound around the pulling tine drive sprocket 81.

  A pulling vertical transmission shaft 82 is inserted in the pulling vertical transmission case 77, and a pulling horizontal transmission shaft 83 is inserted in the pulling horizontal transmission case 78. The upper end is interlocked and connected via a bevel gear. Further, a pulling drive shaft 84 is inserted into the pulling drive case 79, the upper ends of the pulling drive shaft 84 are linked to the pulling lateral transmission shaft 83 via bevel gears, and the lower part is connected to the pulling tine drive shaft 80 via the bevel gears. Linked together. The lower end of the pulling vertical transmission shaft 82 is connected to the left end of the horizontal transmission shaft 76 via a bevel gear so that power is transmitted from the horizontal transmission shaft 76 to the pulling tine drive sprocket 81 of each pulling case 64. The pulling tine 63 configured and attached to the tine chain can be driven.

  A pulling transmission case 86 having a pulling transmission mechanism 85 is provided in the upper part of the pulling vertical transmission case 77, and the pulling transmission mechanism 85 is incorporated in the middle of the pulling vertical transmission shaft 82. The pulling tine 63 of each pulling case 64 is provided. The drive speed can be changed to high speed, medium speed, and low speed.

  Further, as will be described later, the cutting blade device 22 is configured to divide the movable blade portion 31 into two at the center portion of the cutting width and to reciprocate the left and right movable blade portions 31A and 31B in opposite directions. A crankshaft 74a, which is a left cutting blade drive shaft of the cutting blade device 22, is raised upward from a slightly inner side than a left end portion of the lateral transmission shaft 76 via a bevel gear, and a right end portion of the lateral transmission shaft 76 The left and right crankshafts 74 a and 74 b protrude upward from the lateral transmission case 60. In this way, power is transmitted from the lateral transmission shaft 76 to the left and right movable blade portions 31A and 31B, so that the cutting blade device 22 can be driven.

  Further, a rear conveyance drive case 87 extends leftward from the upper portion of the vertical transmission case 59, and a rear conveyance drive shaft 88 is inserted into the rear conveyance drive case 87. The lower end of the drive sprocket shaft 91 is interlocked with the left end of the rear transfer drive shaft 88, and the drive sprocket 89 of the auxiliary stock former transfer chain 69b and the tine of the rear tip transfer device 71 are attached to the drive sprocket shaft 91 at equal intervals. A rear tip conveying device driving sprocket 90 for winding and supporting the chain conveying terminal end portion is provided. Then, the right end of the rear transfer drive shaft 88 is linked to the upper portion of the vertical transmission shaft 75 via a bevel gear, and the drive sprocket 89 and the rear tip transfer device of one auxiliary stock former transfer chain 69b from the upper portion of the vertical transmission shaft 75. Power is transmitted to the drive sprocket 90 so that the auxiliary stock former transport chain 69b and the rear tip transport device 71 can be driven.

  Further, a drive sprocket 93 of the other auxiliary stock former transport chain 69a is provided on the driven sprocket shaft 92 of one auxiliary stock former transport chain 69b. Thus, power is transmitted to the drive sprocket 93 from the upper part of the vertical transmission shaft 75, so that the auxiliary stock former transport chain 69a can be driven.

  In addition, a right conveyance drive case 94 is erected from an intermediate portion of the vertical transmission case 59 at a right angle to the rotation plane of the right stock former merge conveyance chain 67R, and from the lower portion of the right conveyance drive case 94 to the upper left side. A vertical conveyance drive case 95 is extended toward the surface. A right transport drive shaft 96 is inserted into the right transport drive case 94, a vertical transport drive shaft 97 is inserted into the vertical transport drive case 95, and the lower end of the vertical transport drive shaft 97 is connected to the right transport drive shaft 96. It is linked to the lower part via a bevel gear.

  A right stock merging / conveying chain drive sprocket 98 is provided on the right transport driving shaft 96, and the right stock merging / conveying chain drive sprocket 98 is wound around and supported by the right stock merging / conveying chain drive sprocket 98. Further, the lower end of the vertical conveyance drive shaft 99 is linked to the vertical conveyance transmission shaft 97 via a bevel gear. A stock transport chain drive sprocket 100 is provided on the vertical transport drive shaft 99, and a transport start end portion of the stock transport chain 68 is wound around the stock transport chain drive sprocket 100.

  The lower end of the right transport drive shaft 96 is interlocked and connected to the intermediate portion of the vertical transmission shaft 75 via a bevel gear, and the right stock confluence transport chain drive sprocket 98 and the stock transport chain are connected from the intermediate portion of the vertical transmission shaft 75. Power is transmitted to the drive sprocket 100, so that the right stock merging and transporting chain 67R and the stock transporting chain 68 can be driven.

  Further, the left conveyance drive case 101 extends from the middle portion of the pulling vertical transmission case 77 in the right direction and parallel to the rotation plane of the left stock former merge conveyance chain 67L. A left transport drive shaft 102 is inserted into the left transport drive case 101, and a right end of the left transport drive shaft 102 is interlocked and connected to an intermediate portion of the drive sprocket shaft 105 via a bevel gear.

  The drive sprocket shaft 105 is provided with a left stock former merging / conveying chain drive sprocket 103, and the left stock former merging / conveying chain drive sprocket 103 is wound around and supported by a non-conveying action side intermediate portion of the left stock former merging / conveying chain 67L. . Further, the drive sprocket shaft 105 is provided with a left tip transfer device drive sprocket 104, and a non-transfer action side intermediate portion of a chain for attaching the tine of the left tip transfer device 70L at equal intervals to the left tip transfer device drive sprocket 104 is wound. Times supported.

  Then, the left end of the left transport drive shaft 102 is interlocked and connected to the intermediate portion of the pulling vertical transmission shaft 82 via a bevel gear, and the left stock merging transport chain drive is driven from the left end of the horizontal transmission shaft 76 via the pulling vertical transmission shaft 82. Power is transmitted to the sprocket 103 and the left tip transfer device drive sprocket 104, and the left stock former confluence transfer chain 67L and the left tip transfer device 70L can be driven.

  Further, power is transmitted from the intermediate part of the lateral transmission shaft 76 to the central stock unit confluence transport chain drive sprocket 106 that winds and supports the transport end part of the central stock unit confluence transport chain 67C by a drive structure described later. Thus, the central stock former confluence conveyance chain 67C can be driven.

  In this way, the right stock former confluence conveyance chain 67R and the right tip transport device 70R, the left stock former confluence transport chain 67L and the left tip transport device 70L, the central stock former confluence transport chain 67C and the central tip transport device 70C, Each power is transmitted and driven independently, and the central stock former confluence transport chain 67C with respect to the right stock former confluence transport chain 67R and the right head stock transport device 70R, the left stock former confluence transport chain 67L and the left stock tip transport device 70L. And the central tip conveying device 70C are independently driven, and the right star wheel 65R and the right raking belt 66R, the left star wheel 65L and the left raking belt 66L, and the central star wheel 65C and the central raking belt 66C are independently driven. The center by the star wheel combination which meshes the right and left and the center star foils 65L, 65R and 65C. Prevention of troubles such as breakage of each star wheel 65L / 65R / 65C due to excessive load caused by omission of drive structure of the terfoil 65C, the central drive belt 66C, the central stock merge transport chain 67C, and the central tip transport device 70C Is planned.

Next, the configuration of the cutting blade device 22 will be described based on FIG. 7, FIG. 8, or FIG.
The cutting blade device 22 has a length corresponding to almost the entire cutting width, a fixed blade portion 30 having a cutting width for six strips, and is positioned so as to overlap the fixed blade portion 30. A pair of left and right pairs that are shortened by a specific length (substantially the same length as the stroke of the left and right reciprocating motions of the movable blade portions 31A and 31B) than half of the width of each of them, and have a cutting width of about three strips. It consists of movable blade portions 31A and 31B.

  Further, the cutting blade device 22 is configured such that the left and right movable blade portions 31A and 31B are fixed to the upper surface of the fixed blade portion 30 by a plurality of blade pressers 35 that are fastened and fixed together with the adjustment plate 34 to the receiving blade base 32 with bolts 33, nuts 44, and the like. In addition, the polymerization support is supported in a reciprocating manner only in a direction opposite to the left and right with respect to the traveling direction of the combine 1. By reciprocating, cereals are harvested.

  The fixed blade portion 30 is configured by arranging a large number of unit fixed blades 37, 37... At a predetermined interval on the receiving blade base 32, and each unit fixed blade 37 has rivets 36, 36 on the receiving blade table 32. It is fixed by.

  The left and right movable blade portions 31A and 31B are fixed to the left and right knife bars 38A and 38B having a width approximately half that of the receiving blade base 32, and to the ends of the knife bars 38A and 38B at the same fixed intervals as the unit fixed blade 37. .. And a plurality of unit movable blades 39 and left and right knife heads 40 and 40 for fixing rivets 36 to the left and right knife bars 38A and 38B. An adjusting plate 34 is sandwiched between the unit movable blade 39 and the receiving blade base 32, and the adjusting plate 34 is fixed to the receiving blade base 32 with bolts 33 and nuts 44 as will be described later.

  The unit fixed blade 37 is formed in a substantially acute triangle shape in a plan view, and the unit movable blade 39 is also formed in a substantially acute angle triangle shape in a plan view. The unit fixed blade 37 and the unit movable blade 39 both have their right and left hypotenuses sharpened to form a cutting portion 42, and the unit fixed blade 37, 37. The cutting portions 42 of the movable blade portions 31A and 31B in which 39, 39,... Are connected in the left-right direction are formed in a sawtooth shape. Further, the surfaces on which the unit fixed blade 37 and the unit movable blade 39 slide are both substantially flat and are slidable easily, and no dust or the like is sandwiched therebetween.

  As shown in FIG. 8, two knife bar guides 41 </ b> A and 41 </ b> B sandwich a knife bar 38 with a unit movable blade 39 fixed to a rivet 36 from the front and rear, and one knife bar guide 41 </ b> A is riveted at one end (front end) of the blade holder 35. The other knife bar guide 41B is fixed by a bolt 33 together with an adjusting plate 34 between the other end (rear end) of the blade holder 35 and a receiving blade base 32 to which a unit fixed blade 37 is fixed by a rivet 36. Tightened and fixed.

  In addition, a unit fixed blade (hereinafter referred to as “center unit fixed blade”) 37a fixed at the center of the left and right of the fixed blade portion 30 ensures the reciprocating movement of the left and right movable blade portions 31A and 31B. The unit fixed blade 37 has a long base, and the inclination angle of the cut portions a1 and a2 on the left and right side edges of the central unit fixed blade 37a with respect to the left and right directions is the same as that of the other unit fixed blade 37. It is made smaller than the same inclination angle of the cutting part 42 of each right and left side edge.

The inner end movable blade 43 according to the present invention will be described with reference to FIGS.
As shown in FIG. 11, the movable blade portions 31A and 31B located on the innermost side of the conventional cutting blade device 22 have an inner edge movable blade 49 having a substantially right triangular shape adjacent to the unit movable blade 39 having an isosceles triangle shape. Since the inner end movable blade 49 is configured to have a lateral width substantially half that of the other unit movable blades 39, the fixed area with respect to the knife bar 38 is small, and the combine 1 is moved in the traveling direction during operation. There was a problem in durability and the like because it was weak against left-right vibration and vertical pressing force.
On the other hand, as shown in FIG. 9, the movable blade portions 31A and 31B located on the innermost side of the cutting blade device 22 of the present invention have inner end movable blades 43 as isosceles triangular blades 50 and right-angled triangular blades. 51, and is formed in substantially the same shape as a shape in which the conventional inner end movable blade 49 and the adjacent unit movable blade 39 are integrated. Specifically, the cutting portion 49a of the conventional inner end movable blade 49 and the cutting portion 42 of the adjacent unit movable blade 39 are integrated into a cutting portion 43b, and the mounting base portion 49c of the inner end movable blade 49 and the unit movable blade 39 are integrated. The mounting base 39a is integrally configured as a mounting base 43d. By doing so, the isosceles triangular blade 50 and the right-angled triangular blade 51 are integrated to form the inner end movable blade 43, the area of the mounting base 49d is increased, the rigidity is increased, and stable support is provided. The vibration generated when the movable blade portions 31A and 31B reciprocate with respect to the fixed blade portion 30 is suppressed, and the cutting portion 43b of the isosceles triangular blade 50 and the right triangular blade 51 is continuously formed. Wear can be reduced and durability can be improved.

Further, the cutting portion 43c formed on the inner end side edge of the right triangle blade 51 of the inner end movable blade 43 of the present invention is formed so as to be orthogonal to the left and right reciprocating direction of the movable blade portions 31A and 31B. That is, the cutting part 43c is configured to face in the front-rear direction. Since the cutting part 49b inside the conventional inner end movable blade 49 is slightly inclined outward, the width becomes wider, and when the left and right movable blade parts 31A and 31B are closest to the center side, the gap is small and the drive part Although it was necessary to reduce the error and its allowable range, the cutting portion 43c on the inner end side edge of the right triangle blade 51 of the inner end movable blade 43 of the present invention is substantially perpendicular to the rear side of the mounting base portion 43d. Configured to be in a relationship.
With this configuration, when the left and right inner end movable blades 43 and 43 reciprocate in the opposite directions and slide so as to approach each other on the central unit fixed blade 37a, The distance between the cutting part 43c on the inner end side edge and the cutting part 43c can be configured longer than the conventional one, and foreign matter etc. are reduced and the non-cutting area where the cereal is not cut is eliminated. , You can eliminate the uncut cereal.

  In addition, an inclined side 43e is formed at a corner where the rear side of the mounting base 43d and the rear part of the cutting part 43c intersect, so that it can escape even when a foreign object is bitten. Furthermore, three attachment holes 43f for fixing to the knife bar 38 with the rivets 48 are opened in the attachment base 43d at predetermined intervals in the left-right direction, which can be reduced by one as compared with the conventional case and the assembly process can be reduced. .

  The unit center fixed blade 37a located between the left and right inner end movable blades 43, 43 is disposed between the scraping mechanism and the weed plate 21 in a plan view, as shown in FIGS. It is arranged eccentric with respect to the left and right center of the aircraft. More specifically, the unit center fixed blade 37a is arranged between the scraping belt 66C on the right side in the traveling direction and the mounting base of the weed plate 21 at the center of the left and right sides of the machine body. By arranging in this way, the cereals planted in the field are weeded by the weeding board 21 and taken up, and the cereals that have been weeded are raked by the rake mechanism. It is carried by the unit center fixed blade 37a and can reap the stock of the cereal by reciprocating movement of the left and right movable blade portions 31A and 31B. When the left and right inner edge movable blades 43 and 43 approach the center at the time of harvesting, the harvesting mechanism and the distribution mechanism of the grain straw are not transferred to the weed board side of the right and left middle so that the harvested grain straw stock does not approach the left and right middle weed plate side. It will be brought near between the grass plates 21, and conveyance disorder can be prevented.

The side view which showed the whole structure of the combine which concerns on one Example of this invention. FIG. The side view of a reaping device. The top view of a reaping device. The enlarged plan view of the front part of a reaping device. The drive system figure of a reaping device. The top view of a cutting blade apparatus. XX sectional drawing in FIG. The enlarged plan view of the inner end movable blade of this invention. The top view of the center part of a cutting blade apparatus. The enlarged plan view of the conventional inner end movable blade and the unit movable blade adjacent to it.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Combine 4 Cutting device 22 Cutting blade device 30 Fixed blade part 31A * 31B Movable blade part 37 Unit fixed blade 39 Unit movable blade 37a Central unit fixed blade 43 Inner end movable blade 49 Conventional inner end movable blade

Claims (3)

  A cutting blade device in which a movable blade portion that is superposed on a fixed blade portion arranged in the left-right direction and slid in the left-right direction is reciprocated in directions opposite to each other by dividing at a substantially center of the machine width. The movable blade portion is composed of a plurality of unit movable blades and inner end movable blades, and the inner end movable blade located on the innermost side of the cutting blade device is integrally formed with an isosceles triangular blade and a right triangle blade. A cutting blade device characterized by that.   The cutting blade device according to claim 1, wherein an inner end side edge of the right triangle blade is formed so as to be orthogonal to a moving direction of the movable blade portion.   A mowing device, wherein a unit center fixed blade located between the left and right inner end movable blades is disposed between a scrambling mechanism and a weed board.

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