JP2007037441A - Combine harvester - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To further facilitate a maintenance operation by swinging pick-up apparatuses in a combine harvester with which a plurality of the pick-up apparatuses are arranged laterally in parallel at the front of a reaping part, a fixed pick-up apparatus is liftably and swingably supported. <P>SOLUTION: The combine harvester has a constitution that a plurality of the adjacent pick-up apparatuses 13 are integrally lifted and swung. <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 grain culms raised in a predetermined posture by a pulling device are harvested, and the corn straw is merged and transported to an intermediate portion of the cutting width, and then fed to a supply transport device and supplied and transported. A corn straw transporting mode is adopted in which the corn straw in a lying posture conveyed rearward by the apparatus is delivered and supplied to the starting end portion of a feed chain provided in the threshing apparatus.

In the above-described corn straw transporting form, the corn straw merging conveyance path and the reaping device are raised and located at the back of the device, so that it is difficult to perform the cereal clogging removal operation and the reaping device inspection and maintenance work. 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 lifts the pulling device is a useful means for easily removing clogging and inspection and maintenance work in the conveyance path of grain mash and the mowing device, but each pulling device is swung up one by one. With a multi-row harvesting combine that has a large number of pulling devices arranged in parallel, many pulling devices must be swung up and swung during maintenance, which is cumbersome to operate. It was.

  Further, there is room for improvement in the drive structure of the pulling device that is swung up and down. 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-engaged 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, so that the counter shaft was interlocked 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 its main object is to make maintenance work easier by raising the swinging device.

  The first invention is characterized in that a plurality of adjacent raising devices are integrated and swingable.

  According to the above configuration, for example, when four swinging devices are swingably opened / closed, the number of operations is smaller than when swinging each of the four units by allowing two adjacent units to swing together. Cut in half.

  Therefore, according to the first aspect of the present invention, it becomes easier to perform maintenance work by swinging the pulling device.

According to a second invention, in the first invention,
The pulling device is gear-linked to a counter shaft horizontally supported on the upper portion thereof, and the pulling device is supported so as to swing up and swing around the counter shaft, and the counter shaft and the pulling device are supported. The drive sprocket shaft is interlocked with the gear, and the gear transmission system is provided with engagement transmission means having a rotational accommodation greater than the swing angle of the pulling device.

  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. 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 fixed to the stopped counter shaft. However, it is avoided that the rotation interchange interposed in the transmission system between the counter shaft and the drive sprocket shaft of the pulling device absorbs the reverse rotation and the drive sprocket is reversely rotated. When the pulling device is swung down to the original position and the operation is resumed, the rotation accommodation is absorbed and the transmission in the forward rotation direction is resumed.

  Therefore, according to the second invention, by setting the swing fulcrum of the pulling device and modifying the transmission system, the pulling device can be easily swung up and down without paying special attention to the transmission system. The first invention can be more suitably implemented.

According to a third invention, in the second invention,
The engagement transmission means is provided between the drive sprocket shaft and a drive sprocket externally fitted to the drive sprocket shaft.

  According to the above configuration, for example, the key-type engagement transmission means for engaging the key driven into the drive sprocket shaft with the key groove formed on the inner periphery of the boss of the drive sprocket is adopted, and the circumferential width of the key groove is set to the key. By simply setting the width larger than the width, it is possible to easily form a rotation accommodation within a desired range, and the second invention can be implemented at a low cost.

A fourth invention is the invention according to any one of the first to third inventions,
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 fifth invention is the invention according to any one of the first to fourth inventions,
An engagement lock mechanism is provided between the weed frame fixedly arranged in a cantilever-like manner in the lower part of the cutting part and the lower back surface of the pulling device.

  According to the above configuration, the engagement lock mechanism is configured as a hook type or a pin lock type, so that the lower part of the raising device when the raising device is swung up and swung, and the lower part of the lowered raising device is lowered. Fixing can be done easily and quickly without tools.

  FIG. 1 shows a side view of the front portion of the self-removing combine, and FIG. 2 shows a plan view thereof. This self-removable combine is connected to a front part of a traveling machine body 2 having a pair of left and right crawler traveling devices 1 and a cutting part 3 having a six-row cutting specification is connected to the traveling machine body 2 so as to be movable up and down. The threshing device 5 and a grain recovery 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 is configured. 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 stripes 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. The cereals in the standing posture joined 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 to a sideways posture while being conveyed rearward and upward, and the starting end of the feed chain 6. It is handed over to the department.

  The stock holding and conveying mechanism 22 swings up and down around the front fulcrum and changes the conveyance end position, thereby changing the grain culm delivery position to the feed chain 6 in the cocoon length direction and changing the grain to the threshing device 5 A function to change and adjust the insertion length, that is, a so-called handling depth adjustment function is provided.

  As shown in FIGS. 3 and 4, the relay transport mechanism 23 includes a transport chain 24 with a protrusion and a holding rail 25 made of a round bar material that can be elastically retracted and opposed thereto. Conveying protrusions 24a of the conveying chain 24 are provided for each chain link on the lower side of the chain, whereas they are provided for every other chain link on the upper side of the chain. A guide rod 26 made of a round bar is fixedly arranged along the conveyance path of the conveyance chain 24. As described above, the front and rear distances of the conveyance protrusions 14a on the upper side of the chain link of the conveyance chain 24 are increased to slightly increase the culm holding space, thereby reducing the damage on the cereals on the upper side of the chain link of the conveyance chain 24. In addition, the cereals are prevented from being broken by the guides 26 having no corners. In this way, by preventing the cereals from being broken at the holding position by the relay conveyance mechanism 23, the broken cereals are prevented from being supplied to the threshing device 5 and left behind.

  The mowing 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 the mowing unit. It is transmitted to the front part of the cutting part through the frame 10, and the stock of the pulling device 13, the cutting device 14, the auxiliary transport belt 15, the rotary packer 16, the joining transport devices 17, 18, 19, and the supply transport device 20. The nipping / conveying mechanism 22 is driven. 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 FIG. 8, the pulling device 13 is a pulling device that is wound and stretched over a driving sprocket 31, a tension wheel 28 provided at the upper part of the raising case 30, and an idler wheel 29 provided at the lower part of the case. The drive sprocket shaft 34 connected to the drive sprocket 31 is mounted on a horizontal support near the upper portion of the lift device 13 group. The counter shaft 35 is interlocked and connected 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 the power transmitted to the internal transmission shaft 8 of the drive case 36 by the internal transmission shaft 9 of the cutting part frame 10 is transmitted via the internal transmission shaft 39 of one of the columns 37. Are transmitted to the counter shaft 35.

  As shown in FIG. 6, a cylindrical pulling drive case 40 extends upward from the upper back portion of the pulling case 30, and the upper end portion of the pulling drive case 40 is connected to the counter case 38. The upper end portion of the pulling drive shaft 41 inserted through the pulling 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 pulling drive shaft 41 is raised. The drive sprocket shaft 34 is interlocked and connected via bevel gears 44 and 45.

  In order to facilitate clogging removal work on the back of the pulling device 13 and the inspection and maintenance work of the conveying means, the pulling devices 13 at both ends of the six pulling devices 13 arranged in parallel are arranged. Except for (L) and 13 (R), the four inner raising devices 13 can be swung up and swung.

  As shown in FIG. 8, the counter case 38 inserted through the counter shaft 35 is divided into four in the longitudinal direction, and the left and right outer counter case portions 38a and 38b are connected and fixed to a column 37, and the left inner side. The counter case portion 38c and the right inner counter case portion 38d are rotatable upward about a central axis Q of the counter shaft 35 within a range of about 90 °. Of the four inner raising devices 13, the raising drive case 40 in the two adjacent left raising devices 13 is connected to the left inner counter case portion 38c and the two right raising devices 13 adjacent to each other. The raising drive case 40 is connected to the right inner counter case portion 38d. The lower portions of the two left raising devices 13 are connected to each other, the lower portions of the two right raising devices 13 are connected to each other, and the four inner raising devices 13 are connected to the counter shaft in units of two adjacent units. It is possible to swing up and swing around the 35 axis Q. The left and right outer counter case portions 38a and 38b are connected to each other by a support frame 46 and supported by a support frame 47 provided upright from the merging and conveying unit.

  As shown in FIG. 9, the lower portion of the raising case 30 is detachably connected to the front portion of the weeding frame 48 extending forward from the drive case 36. A connecting bracket 48 a is erected on the weed frame 48, and the connecting bracket 48 a and the connecting metal fitting 30 a provided on the lower back surface of the case 30 are connected via an engagement lock mechanism 50 using the buckle 51. Removably connected.

  Accordingly, by removing the weeding tool 49 inserted and connected to the front end of the weeding frame 48 and releasing the lock of the engagement lock mechanism 50, the two unitary pulling device 13 can be swung up and swung. it can. The raised raising device 13 is held in a raised posture by the gas damper 52, and the cutting unit 3 whose front is largely opened by the raised swing of the raising device 13 can be easily inspected and maintained. .

  As shown in FIG. 10, the drive sprocket 31 is key-connected to the drive sprocket shaft 34. The circumferential width of the key groove 55 formed on the inner periphery of the boss 31a in the drive sprocket 31 is set sufficiently larger than the width of the key 56 driven into the drive sprocket shaft 34, and the transmission state in the normal rotational direction F is set. Then, the rotation accommodation s in the reverse direction is formed. This rotational accommodation s is set to a magnitude equal to or greater than the swing angle α of the pulling device 13.

  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. The swinging angle is relatively rotated in the direction opposite to the normal pulling drive direction, but the rotation of the drive sprocket 31 is reversed by the rotation accommodation s provided in advance between the drive sprocket shaft 34 and the drive sprocket 31. There is no movement, and the chain 32 is not rotated in the reverse direction.

  [Other Examples]

  (1) As the engagement lock mechanism 50 for fixing the lower portion of the pulling device 13, as shown in FIG. 11, the lock pin 57 fixed to the back surface of the pulling case 30 is attached to the bracket 48 a of the weed frame 48. It is also possible to have a structure in which a hook 58 attached so as to be manually rotatable up and down around the fulcrum a can be locked.

  (2) As the engagement lock mechanism 50, as shown in FIGS. 12 to 15, a pair of left and right grooved lock pins 60 are provided forward on a support member 59 fixed to the bracket 48 a of the weed frame 48, and A hook 61 is attached to the rear surface of the raising case 30 so that it can be manually turned up and down around the fulcrum b. The hook 61 is engaged with the locking groove 62 of the grooved lock pin 60 from above. You can also. In this structure, the operation lever 61 a extended from the hook 61 may be used as a guide for guiding the planted cereal to the auxiliary transport belt 15.

  (3) As shown in FIG. 16, the weeding tool 49 can be raised and integrated with the apparatus 13 so as to be swingable.

Combine side view Top view of the cutting part Top view of relay transport mechanism Longitudinal rear view of relay transport mechanism Side view of the cutting part with the pulling device raised and opened Vertical side view of pulling device drive structure Longitudinal front view of pulling device drive structure Rear view of pulling device Side view showing an engagement lock mechanism for fixing the pulling device (A) Front view during normal drive and (b) Front view when raising the swing device. Side view showing another embodiment of the engagement lock mechanism for fixing the pulling device Side view showing still another embodiment of the engagement lock mechanism for fixing the pulling device. Front view of engagement lock mechanism The top view which shows the principal part of an engagement lock mechanism Top view of the engagement lock mechanism Side view of the cutting part with the pulling device raised and opened

Explanation of symbols

3 Cutting part 13 Pulling device 31 Drive sprocket 34 Drive sprocket shaft 35 Counter shaft 41 Pulling drive shaft 48 Weeding frame 50 Engagement lock mechanism 55 Weeding tool Q Shaft center a Swing up angle s Rotation interchange

Claims (5)

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,
A combine, wherein a plurality of adjacent pulling devices are integrated to be swingable.   The pulling device is gear-linked to a counter shaft horizontally supported on the upper portion thereof, and the pulling device is supported so as to swing up and swing around the counter shaft, and the counter shaft and the pulling device are supported. 2. The combine according to claim 1, wherein the drive sprocket shaft is interlocked with a gear, and the gear transmission system is provided with engagement transmission means having a rotational accommodation greater than a swing angle of the pulling device.   The combine according to claim 2, wherein the engagement transmission means is provided between the drive sprocket shaft and a drive sprocket externally fitted to the drive sprocket shaft.   The combine according to any one of claims 1 to 3, wherein a weeding tool provided at a lower part of the pulling device is supported so as to be able to swing up and move integrally with the pulling device.   The engagement lock mechanism is provided between the weeding frame fixedly arranged in the lower part of the cutting part in a cantilever direction and the lower back surface of the pulling device, according to any one of claims 1 to 4. Combine.

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