JP2007289027A - Head-feeding combine harvester - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a head-feeding combine harvester having such a construction that a steering section is installed on one side of the flank in the front of the traveling machine body while a reaping section on the other side and, on the front end of the reaping section, multiple raisers of chain-transversely turning specification are installed in parallel to each other, ensuring the reaping section to be miniaturized while being furnished with a raising mechanism enabling ordinary turningly reaping operation and intermediately dividing operation. <P>SOLUTION: The head-feeding combine harvester has the following construction. The transversely turning moving width of the lower end of the raiser 7R situated closest to the steering section among the raisers 7R and 7L is set greater than that on the lower end of the other raiser 7L, and the part of the reaping section side in the front of a steering column 51 set upright on the front end of the steering section is recessedly retreated. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to a relatively small self-removing combine.

  The self-detaching combine has a driving part on one side of the front part of the traveling machine body and a cutting part that can swing up and down on the other side of the front part of the traveling machine body. It is configured by arranging a plurality of pulling-type pulling devices in parallel, and in a small model with two or three-row cutting specifications, the cutting width (left and right width of the entire left and right traveling device) is larger than the stepping cost of the traveling body (left and right overall width of the driving device). The spacing between the weeding tools at both ends is small.

  The cutting part with a small cutting width is shifted to the side near the end of the uncut area of the step margin on the side opposite to the driving section (the uncut area side of normal turning), or the uncut area side of the step margin The cutting device is arranged so as to protrude in the next step, and the traveling device is separated as much as possible from the uncut crop that will be harvested in the next process, so that the mud that rises to the side due to the sinking of the traveling device in the wet field approaches the stock of the uncut crop To avoid this, the cutting device should not enter the mud that has risen in the next step. However, if the mowing part with a small cutting width is placed on the uncut ground side with respect to the stepping margin, the stepping margin will protrude beyond the cutting width to the driving unit side, and the right and left sides will be uncut. In the work, the driving unit will step on the crop with the traveling device.

Therefore, as one means for solving such a problem, for example, as shown in Patent Document 1, a pulling device that is located on the driving unit side (the already cut ground side at the time of normal cutting) is arranged at its lower end. The width of horizontal movement in the section is made larger than the width of horizontal movement in the lower end of the other pulling device, and the cutting width of the cutting part is made close to the stepping allowance, enabling turning and middle cutting work It is considered.
JP 2003-47318 A

  According to the above configuration, an expected function can be expected, but the following problems occur due to the structure of the cutting part. That is, in the self-removing combine, an auxiliary conveying device that obliquely locks and conveys the crops that are being raised toward the joining point in the middle of the cutting width is provided on the back of each pulling device, and the plurality of strips that have been raised and cut. The crops are joined, and the harvested crops are continuously transported rearward and upward by the supply transport device, and are transferred to the feed chain of the threshing device mounted on the rear part of the machine body in a lying position. When the lateral movement width at the lower end of the apparatus is increased, the auxiliary conveying device provided at the back of the apparatus also needs to be laterally extended to correspond to the increase in the movement width. Therefore, it is necessary to provide a lifting space for the auxiliary transfer device in front of the driving unit so that the auxiliary transfer device on the most operating side does not interfere with the driving unit when the mowing unit is raised. As a result, the pulling device located in front of the auxiliary transport device is also moved further forward from the operating unit, and the length of the cutting unit is increased and the overall length of the machine body is increased.

  The present invention has been made paying attention to such a point, and is capable of reducing the size of the cutting portion while having a pulling structure capable of performing the cutting and middle cutting operations. The main purpose is to make it possible.

In the first aspect of the invention, a driving unit is provided on one side of the front side of the traveling machine body, and a cutting unit is provided on the other side of the front side of the traveling machine body so as to be able to swing up and down. In a self-removing combine combiner with a plurality of pull-up raising devices arranged in parallel,
The lateral movement width of the lower end portion of the pulling device located closest to the driving unit among the pulling devices is set to be larger than the horizontal movement width of the lower end portion of the other pulling device, and the driving unit A part of the front side of the control tower erected at the front end of the cutting part is recessed and retracted.

According to the above configuration, the cutting width travels by setting the lateral movement width of the lower end portion of the pulling device located closest to the driving unit to be larger than the lateral movement width of the lower end portion of the other pulling device. It can be close to the tread of the aircraft.
Along with the enlargement of the lower end of the pulling device located closest to the driving unit, the auxiliary transport device provided on the back of the pulling device also extends to the driving unit, but a part of the cutting unit side on the front of the control tower Recessing and retreating allows the space for moving the auxiliary transfer device extended to the operating section side to enter the recessed position on the front surface of the control tower. The auxiliary transfer device and the pulling device are moved forward from the control tower. There is no need to provide them separately.

  Therefore, according to the first aspect of the invention, the trimming part can be reduced in the front-rear direction and the overall length of the airframe can be increased while having a pulling-up structure capable of performing normal turning and middle cutting operations. It is now possible to enhance the harvesting and harvesting function without any problems.

According to a second invention, in the first invention,
A pair of left and right pulling devices are provided, and the cutting part is configured to have a two-row cutting specification.

  According to the said structure, the said effect of this invention can be exhibited notably in the 2-strip cutting specification from which the difference of the step margin of a driving body and a cutting width becomes large.

According to a third invention, in the first or second invention,
The upper end of the winding path of the pulling chain in the pulling apparatus located closest to the operating unit is set lower than the upper end of the winding path of the pulling chain in the other pulling apparatus.

  According to the above configuration, the pulling device positioned closest to the driving unit is lowered by lowering the upper end of the winding path of the chain by extending the lateral movement width of the lower end of the pulling device positioned closest to the driving unit. It is possible to make the circumference of the pulling chain wound around the device the same as the length of the pulling chain wound around the other pulling device, and the parts assembled to each pulling device are the same. As a result, it is possible to perform assembly without making a mistake in assembly.

  1 and 2 show the entire side surface and the entire plane of the self-decomposing combine according to the present invention, respectively. In this self-removable combine, a cutting unit 3 having a two-row cutting specification is connected to a front left side of a traveling machine body 2 having a pair of left and right crawler traveling devices 1 so as to be swingable and movable up and down. The driving unit 4 is provided on the right side of the front part, and the threshing device 5 and the grain recovery tank 6 are mounted on the traveling machine body 2.

  The mowing unit 3 includes a pair of left and right pulling devices 7L and 7R for raising the planted crop to a predetermined cutting posture, a clipper type mowing device 8 for cutting the raised planted crop, and the width of the crop being raised. A pair of left and right auxiliary transport devices 9L and 9R that lock and transport obliquely backward toward the center, a pair of left and right scraping rotary packers 10L and 10R that stir and join the crop stock, and the joined harvested crops upward and backward The feeding / carrying device 11 that sandwiches and conveys the chopping portion is provided, and the entire cutting unit 3 is swung up and down by a hydraulic cylinder 12 around a fulcrum p above the rear part.

  The supply and transport device 11 is composed of a stock holding and transporting mechanism 11a that clamps and transports the crop stock side, and a tip locking transport mechanism 11b that locks and transports the crop head side. By adjusting the supply and transport device 11 as a whole up and down around the fulcrum p, the holding position of the transported crop is changed, and the crop delivery position to the feed chain 13 provided in the threshing device 5 is changed to the crop. It is equipped with a depth adjustment function that adjusts and adjusts in the cocoon length direction.

  FIG. 5 shows an outline of the transmission structure. An engine 14 is disposed below the seat in the driving unit 4, and a part of the output from the engine 14 is transmitted to the transmission case 16 via a hydrostatic continuously variable transmission (HST) 15, The crawler traveling device 1 is driven forward and backward at a continuously variable speed, and part of the engine power is branched and transmitted to the threshing device 5. The transmission case 16 is provided with a PTO shaft 17, and the forward rotation power of the working power extracted from the PTO shaft 17 is transmitted to the counter shaft 18 that is horizontally mounted along the fulcrum p of the cutting part 3. Is done.

  A forward transmission shaft 19 linked to the counter shaft 18 with a bevel gear extends from the base of the cutting portion 3 toward the upper front, and a part of the power transmitted from the extended end to the first vertical transmission shaft 20. Is transmitted to the raising drive shaft 21 of the raising device 7R on the right side of the machine body. The lower part of the first vertical transmission shaft 20 is bevel geared to the inner shaft 22 and the outer cylinder shaft 23 that are arranged vertically, and the outer cylinder shaft 23 causes the auxiliary conveyance device 9R on the right side of the machine body and the right side of the machine body to be scraped. The rotary packer 10R is driven. The scraping rotary packer 10L on the left side of the machine is meshed with and interlocked with the scraping rotary packer 10R on the right side of the machine. It has become so.

  The lower part of the inner shaft 22 is interlocked with the crank mechanism 24, and the cutting blade 8a of the cutting device 8 is driven to reciprocate left and right by a crank mechanism 23 with a constant stroke. The lower end of the inner shaft 22 is interlocked and connected to a lateral transmission shaft 25 that is installed horizontally at the rear portion of the cutting device 8, and the second longitudinal transmission shaft 26 is linked to the left end portion of the lateral transmission shaft 25 with a bevel gear. The pulling drive shaft 27 of the pulling device 7L on the left side of the machine body is driven by the power transmitted to the second vertical transmission shaft 26.

  The supply / conveyance device 11 is interlocked with a bevel gear at the left end portion of the counter shaft 18 so that power can be transmitted around the fulcrum p so as to be swingable up and down.

  As shown in FIG. 6, the raising device 7 </ b> R on the right side of the fuselage (operating unit 4 side) is arranged on the side of the drive sprocket 31 that is arranged on the upper part of the raising case 30 and connected to the raising drive shaft 21. A tension sprocket 32 that can be displaced vertically and is spring-biased upward, a first chain guide roller (first chain guide member) 33 and a second chain guide roller (first 2 chain guide member) 34, and the chain 35 is wound around and stretched in a horizontal direction. The chain 35 is raised and pivoted at an equal pitch so that the claw 36 can swing up and down. It is connected.

  In the return path where the chain 35 is raised and moved downward, the raising claw 36 is raised and moved downward in a lying posture along the chain 35, and is guided by the outer periphery of the first chain guide roller 33 and rises to the lateral movement path. It is configured to move around and to move laterally in a state where the standing posture is maintained by the guide rail 37 fixedly arranged. The pulling claw 36 that has laterally moved along the lateral movement path in the standing posture is guided to the outer periphery of the second chain guide roller 34 and is guided to the guiding path while maintaining the standing posture, and is raised and fixed to the side of the path. The raised claw 36 moves upward in a state where it is erected and guided by the deployed guide rail 38 and falls off the upper end of the guide rail 38 so as to fall down and go around the return path.

  The raising device 7L on the left side of the machine body is arranged on the upper side of the raising case 40 and is connected to the raising drive shaft 27. The driving sprocket 41 can be displaced vertically and is spring-biased upward. The tension sprocket 42 and the raising case 40 are arranged below the raising case 40 and raised over the chain guide roller 44 so that the chain 45 is wound around the chain 45. The raising chain 45 has a raised claw. 46 is pivotally connected at an equal pitch so as to swing up and down.

  The raising claw 46 that has been raised and moved downward in a lying posture along the chain 45 is guided by the outer periphery of the chain guide roller 44 and raised while moving up to the path, and is fixedly arranged on the side of the path. It is configured to move upward in a state of being guided upright by the guide rail 48.

  The raising paths of the two raising devices 7R and 7L are arranged so as to face each other and are adjacent to each other, and the raising chains 35 and 45 are rotationally driven at the same speed, so that the raising devices 7R and 7L The raised claws 35 and 45 are raised and moved upward while maintaining abutment with each other in the path so that the crops are raised without escape.

  The winding circumferential length of the raising chain 35 in the raising device 7R on the right side of the machine body is an integer of the nail pitch of the raising claws 36 and 46, rather than the winding circumferential length of the raising chain 45 in the raising device 7L on the left side of the machine body. It's twice as long. In this example, the axial center position of the drive sprocket 31 located at the upper end of the winding path of the raising chain 35 in the raising device 7R on the right side of the machine body is the upper end of the winding path of the raising chain 45 in the raising device 7L on the left side of the machine body. By setting it higher than the axial center position of the drive sprocket 41 located at, the long circumferential pulling chain 35 and the short circumferential pulling chain 45 are raised and driven synchronously with the pawls 36 and 46 in contact with each other. It is set as follows. The raising cases 30 and 40 of both the raising devices 7R and 7L are configured to have the same height and are bridge-connected by an arch-shaped reinforcing stay 49.

  In the raising device 7R on the right side of the machine body, the lateral movement width a of the lower end portion is set to be larger than the lateral movement width b of the lower end portion of the raising device 7L on the left side of the machine body. w, that is, the distance between the leading ends of the weeding tools 50 provided at the front ends of the two pulling devices 7R and 7L is set as close as possible to the stepping margin H of the left and right crawler traveling devices 1, as shown in FIG. As shown in FIG. 7 (b), the two pulling devices 7R, 7L are used to raise one line at the time of the normal swiveling operation. As shown in FIG. Raise Article 3 at 7L.

  The first chain guide roller 33 has a smaller diameter than the second chain guide roller 34, and the chain winding curvature of the second chain guide roller 33 is smaller than the chain winding curvature of the second chain guide roller 34. . As a result, the curvature of the tip turning locus of the raising claw 36 that is guided to the first chain guide roller 33 to turn up and down becomes small, and crop scraping leakage can be reduced.

  By configuring the second chain guide roller 34 in the pulling device 7R on the right side of the machine body to have a large diameter, a crop located near the right end of the cutting width w is raised during the mid-split operation and passes through the lower end of the device 7R to cause the path. When being guided to, the crop is prevented from being folded tightly by the corner on the raising path side at the lower end of the raising device 7R.

  As shown in the front view of FIG. 8, the auxiliary conveyance device 9R on the right side of the machine body is arranged at a position higher than the auxiliary conveyance device 9L on the left side of the machine body. When the auxiliary conveying device 9R is engaged and conveyed to the middle side of the cutting width, the crop is not bent excessively.

  A control tower 51 is provided at the front end of the operation unit 4, and a control lever 52 is erected on the right side of the control tower 51. The control lever 52 is configured to be capable of a cross operation, and by swinging left or right from the neutral position, a speed difference is given to the left and right crawler travel devices 1 to operate the traveling vehicle body 2 in the lever operation direction. Is configured to face. The control lever 52 also serves as a mowing part raising / lowering lever. The maneuvering lever 52 is operated so as to raise the mowing part 3 by swinging backward from the neutral position and to move the mowing part 3 downward by swinging operation forward. A lever 52 and a control valve (not shown) that controls the operation of the hydraulic cylinder 12 are linked.

  As shown in FIGS. 3, 4, 9, and 10, the left half of the front surface of the control tower 51 is recessed and retracted, and this recessed portion s is located on the right side of the fuselage when the cutting unit 4 is lifted. It is an ascending movement space where the right end side portion of the auxiliary conveyance device 9R enters. According to this, in order to avoid the auxiliary conveyance device 9R on the right side of the aircraft from interfering with the control tower 51 when the cutting unit 4 is raised, the pulling devices 7R and 7L and the auxiliary conveyance devices 9R and 9L are moved forward. Therefore, it is not necessary to deploy, and it is possible to suppress an increase in the longitudinal length of the cutting unit 4.

[Other Examples]
(1) In the above-described embodiment, the height position of the drive sprocket 31 in the lifting device 7R on the right side of the machine body is made higher than the height position of the driving sprocket 41 in the lifting device 7L on the left side of the machine body, so that the circumferential lengths are different. As shown in FIG. 11, the height position of the driving sprocket 31 in the right side lifting device 7R is set to the driving sprocket in the left side lifting device 7L as shown in FIG. If the height is lower than 41, the pulling chains 35 and 45 of both pulling devices 7R and 7L can be made the same circumference.

  (2) In the above embodiment, the self-removing combine of the 2-saw-cutting specification was illustrated, but it can also be applied to the self-removing combine of the 3-strip-cutting specification in which three raising devices are arranged in parallel. The lateral movement width of the lower end portion of the pulling device closest to the driving unit is made larger than the horizontal movement width of the lower end portion of the other two pulling devices. Introduce crops one by one and trigger three, and at the time of middle splitting work, introduce two crops into the triggering device closest to the driving unit and trigger four.

Overall side view of self-removing combine Overall plan view of self-removing combine Front view of mowing unit Top view of the cutting part Schematic diagram of transmission structure Front view of pulling device Schematic plan view showing the swivel cutting operation mode (A) and the intermediate cutting mode (B) Front view showing the auxiliary transport device Side view of the lowered cutting part Side view of raised reaper Front view showing another embodiment of the pulling device

Explanation of symbols

2 Traveling machine body 3 Cutting part 4 Driving part 7R Pulling device 7L Pulling device 35 Pulling chain 45 Pulling chain 51 Control tower a Horizontal rotation movement width b Horizontal rotation movement width

Claims (3)

A driving unit is provided on one side of the front part of the traveling machine body, and a cutting part is provided on the other side of the front part of the traveling machine body so as to be able to swing up and down. In a self-removing combine that has multiple units arranged in parallel,
The lateral movement width of the lower end portion of the pulling device located closest to the driving unit among the pulling devices is set to be larger than the horizontal movement width of the lower end portion of the other pulling device, and the driving unit A self-removing combine, wherein a part of the cutting portion side of the front surface of the control tower erected at the front end of the pit is recessed and retracted.   The self-removable combine according to claim 1, wherein the pulling device is arranged in a pair on the left and right, and the harvesting part is configured to have a two-row trimming specification.   3. The self-actuating apparatus according to claim 1, wherein an upper end of a winding path of the raising chain in the raising device located closest to the operating unit is set lower than an upper end of the winding path of the raising chain in another raising device. Demold combine.

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