JP2007006822A - Combine harvester - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To simply enable lifting and lowering operation of raising-up apparatuses without paying special attention to a transmission system in a combine harvester in which a plurality of raising-up apparatuses are disposed in parallel at right and left positions in front of a reaping part and prescribed raising-up apparatuses are liftably and swingably supported. <P>SOLUTION: In the combine harvester, the each raising-up apparatus 13 is interlocked by a gear with a counter shaft laterally installed and supported in the upper part of the raising-up apparatus 13 and liftably and swingably supported around the shaft center Q of the counter shaft 35 and a claw clutch 50 is disposed as an engaging transmission means having flexibility of rotation not smaller than the lifting angle α of the raising-up apparatus between the counter shaft 35 and a transmission system of a raising driving shaft 41 interlocked by the gear to the counter shaft 35. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a combine in which a plurality of pull-up devices are arranged in parallel on the left and right at the front portion of a cutting unit, and a predetermined pull-up device is supported so as to swing up and swing.

  In a self-removing combine, in general, a plurality of cereal grains that have been raised in a predetermined posture by the elevating device are harvested, and the harvested cereals are merged and conveyed to an intermediate position of the cutting width, and then fed to the supply conveyance device for supply. A corn straw transporting mode is adopted in which the corn straw in a laterally tilted posture transported rearward by the transport device is delivered and supplied to the starting end of a feed chain provided in the threshing device.

In the above-described grain haul transport mode, the corn-crop merging conveyance path and the mowing apparatus are raised and located at the back of the apparatus, so that it is difficult to remove the clogging of the grain and to perform the inspection and maintenance work of the mowing apparatus. Therefore, for example, as disclosed in Patent Document 1, a part of the central side among a plurality of pulling devices arranged in parallel at the front portion of the cutting unit is configured to be swingable and swingable. A configuration has been proposed in which clogging removal work and various inspection and maintenance work can be performed from a wide space opened by swinging up the apparatus.
JP 2004-81006 A

  The above structure that swings and opens the pulling device is a useful means for easily performing clogging removal and inspection work in the merging and conveying path of the harvested cereal and the cutting device. There was room for improvement in the drive structure.

  That is, the plurality of raising devices arranged in parallel are gear-linked to the counter shaft horizontally supported on the upper portion thereof. In the conventional structure, the swinging fulcrum of the raising device is the axis of the counter shaft. It was set at a position out of the range. For this purpose, a pin engagement type clutch that can be engaged and disengaged in the direction of the rotational axis is interposed in the interlocking system of the pulling drive shaft linked to the bevel gear, and the clutch is automatically separated when the pulling device is swung up and swung. The interlocking with the counter shaft was cut off, and the pulling device was lowered to the original position and the clutch was engaged to connect the counter shaft to the counter shaft again.

  For this reason, in order to properly align and engage and connect the transmission members constituting the separated clutch, a connection separation structure with high accuracy and rigidity is required, which is expensive and difficult to manufacture. there were. Further, when the pulling device is swung up and the internal pulling chain is rotated, when the pulling device is swung down, the rotation phase of the transmission members in the clutch is shifted and a predetermined engagement connection is established. This is impossible, and it is necessary to raise the device while swinging the device while paying attention to the rotational phase of the transmission members in the clutch, and there is room for improvement in terms of handling.

  The present invention has been made paying attention to such points, and it is a main object of the present invention to make it possible to easily raise and lower the lifting device without paying any special attention to the transmission system. It is said.

The first invention is a combine in which a plurality of pulling devices are arranged in parallel on the left and right at the front portion of the mowing unit, and the predetermined pulling device is supported so as to swing up and swing.
The pulling device is gear-linked to the counter shaft horizontally supported on the upper portion thereof, and is supported so as to be swingable up and down around the axis of the counter shaft. The counter shaft and the gear are linked to the counter shaft. The transmission system with the pulling drive shaft is characterized in that engagement transmission means having a rotational accommodation greater than the swing angle of the pulling device is interposed.

  According to the above configuration, even if the pulling device is swung up and swung, there is no portion to be separated in the transmission system, and it is not necessary to provide a special centering structure. Also, when the pulling device is swung up and swung, the driven gear that is swung up together with the pulling device is relatively reversely rotated by the driving gear that is fixed to the stopped counter shaft. However, the rotation accommodation intervening in the transmission system between the counter shaft and the drive shaft absorbs the reverse rotation, and the reverse drive of the drive shaft is avoided. When the pulling device is swung down to the original position and the operation is resumed, the rotation accommodation is absorbed and transmission in the forward rotation direction is resumed.

  Therefore, according to the first invention, by setting the swing fulcrum of the pulling device and remodeling the transmission system, the pulling device can be easily swung up and down without paying any special attention to the transmission system. I can do it now.

According to a second invention, in the first invention,
The engagement transmission means is constituted by a pawl clutch having meshing accommodation.

  According to the said structure, the said 1st invention can be implemented simply and structure simply using a pair of clutch member with a nail | claw.

According to a third invention, in the first or second invention,
A weeding tool provided at a lower portion of the pulling device is lifted and supported so as to be movable up together with the pulling device.

  According to the above configuration, the front end portion of the cutting portion when the pulling device is swung up and swinged is more widely opened, and the clogging removal work and the inspection and maintenance work can be performed more easily.

A fourth invention is the invention according to any one of the first to third inventions,
The merging and conveying unit disposed at the lower rear of the pulling device is supported so as to be able to swing up and move integrally with the device.

  According to the above-described configuration, the working space is vacated by swinging up and swinging the raising device, and part of the cereal clogged portion is also released, so that the clogging removal operation is further facilitated.

  FIG. 1 shows a side view of the front portion of the self-removing combine, and FIG. 2 shows a plan view thereof. The self-decomposing combine is configured such that a cutting unit 3 having a six-row cutting specification is connected to a front part of a traveling machine body 2 including a pair of left and right crawler traveling devices 1 so as to be movable up and down, and a driving unit 4 and a threshing are connected to the traveling machine body 2. The apparatus 5 and a grain collection tank (not shown) are mounted.

  The mowing unit 3 is provided with a mowing unit frame 10 in a forward-downward inclined posture, and the rear end base portion of the mowing unit frame 10 is laterally mounted on an upper portion of a support base 11 erected at the front end of the traveling machine body 2. The fulcrum P is connected and supported so as to be able to swing up and down, and is driven to swing up and down by the hydraulic cylinder 12. The mowing unit frame 10 includes six pulling devices 13 for raising the planted culm to a predetermined cutting posture, a clipper-type mowing device 14 for cutting the raised planting culm, and the mowing cereal lightly rearward. Auxiliary transport belt 15 for scraping, a rotary packer 16 for scraping and transporting the stock of the harvested cereals backward, and three sets of merging and transporting devices 17 for transporting and joining the harvested cereals to the intermediate part within the cutting width. , 18, 19, and the supply conveying device 20 that conveys the merged cereal to the start end of the feed chain 6 provided on the lateral outer side of the threshing device 5.

  The merging / conveying device 17 on the left side is composed of a stock transporting mechanism 17a that sandwiches and transports the stock of the two left-handed harvested cereals and a tip transporting mechanism 17b that latches and transports the tip, and the merging and transporting in the center portion The apparatus 18 includes a stock transport mechanism 18a and a tip transport mechanism 18b for two middle strips, and the merging transport device 19 on the right side includes a stock transport mechanism 19a and a tip transport mechanism 19b for the right two strips. It consists of and. The auxiliary transport belt 15 and the rotary packer 16 are provided at the front ends of the stock transport mechanisms 17a, 18a, and 19a, respectively, and the rotary packers 16 that are erected in units of two lines are meshed with each other.

  The feeding and conveying device 20 is rearward from the cereal merging point by the tip locking conveying mechanism 21 formed by extending the right two-pointed tip conveying mechanism 19b to the front of the feed chain 6 and the merging and conveying devices 17, 18, and 19. The stock holding and transporting mechanism 22 extended to the feed chain 6 and a horizontally turning type relay transporting mechanism 23 arranged in front of the feed chain 6. Then, the cereals in the standing posture merged by the merging and conveying devices 17, 18, and 19 are received by the starting end portion of the supply and conveying device 20, and the cereals are changed into a sideways posture while being conveyed rearward and upward, so that the feed chain 6 It is handed over to the beginning.

  Here, the stock holding and transporting mechanism 22 swings up and down around the front fulcrum to change the transport end position, thereby changing the cereal delivery position to the feed chain 6 in the cocoon length direction and the threshing device. 6 is provided with a function of changing and adjusting the culm insertion length to 6, a so-called handling depth adjustment function.

  The cutting unit frame 10 is provided with a function as a cylindrical transmission case having a transmission shaft inserted therein, and a detailed description of the transmission structure is omitted, but the engine power transmitted to the fulcrum P is not transmitted. It is transmitted to the front part of the cutting part through this cutting part frame 10, and the pulling device 13, the cutting device 14, the auxiliary transport belt 15, the rotary packer 16, the confluence transporting devices 17, 18, 19 and the supply transporting device 20. The stock holding and conveying mechanism 22 is driven. In addition, the tip locking conveyance mechanism 21 and the relay conveyance mechanism 23 of the supply conveyance device 20 are driven by the power branched at the fulcrum P.

  As shown in FIGS. 7 and 8, the mowing device 14 has two sets of clipper mechanisms 14A and 14B whose operating directions of the cutting blades are opposite to each other and arranged in a horizontal row to reduce driving vibration caused by the reciprocating operation of the cutting blades. Is planned. That is, the cutting blades 14a and 14b of the left and right clipper mechanisms 14A and 14B are engaged and interlocked with the pair of drive arms 24a and 24b arranged side by side near the center of the cutting width via the knife heads 25a and 25b, respectively. Thus, the left and right cutting blades 14a and 14b move left and right in opposite directions by swinging the drive arms 24a and 24b left and right with a fixed stroke in opposite directions. The drive arms 24a and 24b are engaged with each other via a pair of gears 26a and 26b, and one drive arm 24a is arranged to be rotatable about the longitudinal axis x at the front end portion of the cutting unit frame 10. The crank arm 27 is interlocked and connected to the crank arm 27 via a connecting rod 28. When the crank arm 27 is continuously rotated in a certain direction, one drive arm 24a is reciprocally swung at a predetermined angle. The drive arm 24b is reciprocally swung in the opposite phase. Here, the crank arm 27 is disposed below the merging point of the merging and conveying devices 17, 18, and 19, and the rotating operation of the crank arm 27 causes straw scraps or the like at the lower part of the cereal conveying path. It is configured to make it difficult for trash to stay. In addition, the upper end of the crank arm 27 is provided with an umbrella-shaped flange portion 27a to prevent the falling scraps from being wound around.

  As shown in FIG. 4, the pulling device 13 is configured by pivoting a plurality of pulling claws 33 on a pulling chain 32 wound and stretched inside a pulling case 31. The drive sprocket support shaft 34 provided on the upper portion thereof is interlocked and connected to the counter shaft 35 that is horizontally supported near the upper portion of the pulling device 13 group as follows.

  Pipe struts 37 are erected from near the left and right ends of a horizontally long drive case 36 that is arranged transversely and perpendicularly to the front end of the cutting part frame 10, and a cylindrical counter erected between the upper ends of the pipe struts 37. The counter shaft 35 is inserted into and supported by the case 38, and although not shown, the power transmitted to the internal transmission shaft of the drive case 36 by the internal transmission shaft of the cutting unit frame 10 is the internal transmission shaft of one of the columns 37. Is transmitted to the counter shaft 35 via the.

  A cylindrical pulling drive case 40 extends upward from the back of the upper end of the pulling case 31, and the upper end of the pulling drive case 40 is fitted and connected to the counter case 38. The upper end portion of the pull-up drive shaft 41 inserted through the drive case 40 and the counter shaft 35 are interlocked and connected via bevel gears 42 and 43, and the lower end portion of the pull-up drive shaft 41 and the drive sprocket of the case 31 are raised. The support shaft 34 is interlocked and connected via bevel gears 44 and 45.

  Here, in order to facilitate clogging removal work on the cereal conveyance path and inspection / maintenance work of the conveyance means at the back of the pulling device 13, pulling of both ends of the six pulling devices 13 arranged in parallel is performed. The four inner raising devices 13 except for the first and second devices 13 (L) and 13 (R) are configured to swing up and swing.

  That is, the pulling drive case 40 in the four inner pulling devices 13 is externally supported by the counter case 38 so as to be pivotable upward in the range of about 90 ° around the axis Q of the counter shaft 35. The lower portion of the raising case 31 is detachably connected to a front support bracket 47 of a weed frame 46 that extends forward from the drive case 36, and is raised from the front support bracket 47. Is removed and the weeding tool 55 inserted and connected to the front end of the weeding frame 46 is removed so that the pulling device 13 can be swung up and swung upward. . The raised raising device 13 can be fixed in the raised posture by a lock means (not shown).

  As shown in FIG. 5, the driven bevel gear 43 mounted on the pulling drive shaft 41 is lifted and supported by the drive shaft 41, and the bevel gear 43 and the pulling drive shaft 41 are interchangeable. An attached pawl clutch 50 is interposed. The pawl clutch 50 is provided at a diagonal position on the outer periphery of a pair of claws 51 projecting at diagonal positions on the end face of the boss portion of the bevel gear 43 and a clutch member 52 that is raised and key-coupled to the end of the drive shaft 41. The pair of claws 53 are configured to mesh with each other. As shown in FIG. 6, in the transmission state in the normal rotation direction F, meshing rotation accommodation s in the reverse direction is formed. And this meshing rotation accommodation s is set to the magnitude | size beyond the raising angle (alpha) of the raising apparatus 13. FIG.

  Therefore, when the counter shaft 35 is raised and the apparatus 13 is swung up and swung around the axis Q of the counter shaft 35, the driven bevel gear 43 is moved relative to the fixed drive bevel gear 42. Although it is relatively rotated in the direction opposite to the normal pulling drive direction by the swing angle, it is caused by the rotation accommodation s given in advance to the pawl clutch 50 and there is no reverse rotation of the drive shaft 41. The chain 32 is not rotated in the reverse direction.

  [Other Examples]

  (1) As shown in FIG. 10, when the weeding tool 55 arranged in front of the lower part of the pulling device 13 is configured so as to be able to swing up and move integrally with the pulling device 13, it takes time and effort to attach and detach the weeding tool 55. In addition, the front end portion of the cutting unit when the pulling device 13 is swung up and swung is more widely opened, so that the clogging work and the inspection and maintenance work can be performed more easily.

  (2) As shown in FIG. 11, the merging / conveying portion provided at the lower rear side of the pulling device 13, that is, the middle two auxiliary conveying belts 15 and the rotary packer 16, and the middle two merging / conveying If the device 18 is raised and configured to move up and move integrally with the device 13, the working device is freed by raising and swinging the device 13 and a part of the clogged portion is also opened. The clogging work is further facilitated.

  (3) As an engagement transmission means provided with the rotation accommodation s, it can also be set as the key transmission structure via the keyway of the circumferential direction range beyond the raising angle (alpha) of the raising apparatus 13. FIG.

  (4) As the engagement transmission means provided with the rotation accommodation s, it is possible to use a form in which the arcuate hole formed in the circumferential range not less than the swing angle α of the pulling device 13 is engaged with the transmission pin. .

Combine side view Top view of the cutting part Side view of the mowing unit with the pulling device open Vertical side view of pulling device drive structure Longitudinal front view of pulling device drive structure Transverse plan view of claw clutch in pulling device drive structure Overall plan view of mowing device drive structure The top view which shows the principal part of a reaping device drive structure Front view showing the main part of the mowing device drive structure The side view which shows another Example of the cutting part which open | released the raising apparatus Side view showing still another embodiment of the cutting unit with the pulling device open.

Explanation of symbols

3 Cutting part 13 Pulling device 35 Counter shaft 41 Pulling drive shaft 50 Claw clutch 55 Weeding tool Q Shaft center s Rotation interchange

Claims (4)

In a combine that supports a plurality of raising devices in parallel on the left and right in the front part of the mowing unit, and supports a predetermined raising device so as to swing up and swing,
The pulling device is gear-linked to the counter shaft horizontally supported on the upper portion thereof, and is supported so as to be swingable up and down around the axis of the counter shaft. The counter shaft and the gear are linked to the counter shaft. A combine, wherein a transmission system with a pulling drive shaft is provided with an engaging transmission means having a rotational accommodation greater than a swing angle of the pulling device.   The combine according to claim 1, wherein the engagement transmission means is constituted by a claw clutch provided with meshing accommodation.   The combine according to claim 1 or 2, wherein a weeding tool provided at a lower portion of the pulling device is supported so as to move up and move together with the pulling device.   The combine as described in any one of Claims 1-3 which supports the merging conveyance part arrange | positioned by the lower back of the said raising apparatus so that it can raise and move integrally with an apparatus.

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