JP7045788B2 - combine - Google Patents

Description

The present invention relates to a combine equipped with a grain culm transporting device for transporting a harvested grain culm toward the rear of the machine body in a cutting section at the front part of the machine body.

In the combine, as an example of the grain culm transport device, a merging transport device for gathering a plurality of cut culms toward the center side in the cutting width direction is provided, and this merging transport device sandwiches the stock root side of the harvested culm. A stock-root holding and transporting device for transporting while carrying the stock and a tip locking and transporting device for locking and transporting the tip side of the harvested culm are provided in a vertically stacked state. In the past, the drive wheel for driving the stock-holding transfer device and the drive wheel for driving the tip locking transfer device were rotationally driven by the same drive shaft (see, for example, Patent Document 1). ..

Japanese Unexamined Patent Publication No. 2002-101733

In the above-mentioned conventional configuration, the drive wheel for driving the stock holding and transporting device and the driving wheel for driving the tip locking transport device are located on the same axis, so that the stock and tip locking transport device and the tip locking transport device are located. There is a risk of installation restrictions when deploying and.

For example, when the number of cutting rows increases, in the above-mentioned confluence transporting device, the drive shaft for driving the stock root holding transport device and the tip locking transport device is the grain culm to which the cut grain culm is transferred. Must be provided below the transfer area. Since there are other transport devices, drive mechanisms, etc. other than the intermediate transport section on the lower side of the grain transfer region, the arrangement of the drive shaft is restricted. As a result, when the stock-holding transfer device and the tip locking transfer device are driven by a common drive shaft, the drive wheels are made to act in the middle of the linear movement path of the endless rotation band provided in them. There was a disadvantage that the driving force could not be transmitted efficiently.

Therefore, it has been desired to reduce the risk of installation restrictions on the grain culm transport device so that the driving force can be efficiently transmitted.

The characteristic configuration of the combine according to the present invention is a stock root transporting device that sandwiches and transports the stock root side of the harvested culm, and a tip that is provided above the stock root transporting device and locks and transports the tip side of the harvested culm. The stock has a transport device, and a power transmission mechanism provided between the stock transfer device and the tip transfer device to transfer power between the stock transfer device and the tip transfer device. A grain culm transporting device for transporting the harvested culm toward the rear of the machine by the original transporting device and the tip transporting device is provided.
A stock source side drive wheel to which power is input to the stock source side drive wheel, another guide wheel different from the stock source side drive wheel, and the stock source side drive wheel and the other in the stock source transfer device. It is equipped with an endless rotation band on the stock origin side, which is wound around the guide wheel of the stock.
The tip side drive wheel to which power is input to the tip transfer device, another guide wheel different from the tip side drive wheel, and the tip side drive wheel and the other guide wheel in the tip transfer device. A wound endless rotation band on the tip side is provided,
The stock origin side drive wheel is provided at a position different from the tip side drive wheel in a direction along the rotation axis of the stock origin side drive wheel.
The stock origin transporting device and the tip transporting device are provided side by side in a directional view along the rotation axis of the stockholder side drive wheel.
The power transmission mechanism has one rotating body that rotates around the same axis as the drive shaft that drives the origin side drive wheel, and the other that rotates around the same axis as the drive shaft that drives the tip side drive wheel. A rotating body of the above, an endless rotating band for power transmission wound over the one rotating body and the many rotating bodies, and power between the stock origin side drive wheel and the tip side drive wheel. Is configured to convey
Between the tip transfer device and the power transmission mechanism, a partition member that covers the tip side endless rotation band from the lower side and separates the tip transfer device and the power transmission mechanism from above the power transmission mechanism. It is in the point that it is provided in a covered state.

According to the present invention, the stock origin side drive wheel to which power is input in the stock origin transfer device and the tip side drive wheel to which power is input in the tip transfer device are along the rotation axis of the stock origin side drive wheel. It is installed in a state where it is located at a different place in the direction view. Power is transmitted from the outside to one of the drive wheels on the stock origin side and the drive wheel on the tip side, and the power is transmitted from one drive wheel to the other drive wheel by the power transmission mechanism. By the power, the endless rotation zone on the stock root side and the endless rotation zone on the tip side rotate to transport the cut grain culm.

One of the drive wheels on the stock origin side and the drive wheel on the tip side, to which power is transmitted from the outside, is restricted by an external transmission mechanism, but the other drive wheel is not restricted in arrangement. , It can be installed in a position where it is easy to efficiently transmit the driving force.

As a result, it has become possible to reduce the risk of installation restrictions on the grain culm transport device and to efficiently transmit the driving force.

Further , since the drive shaft for driving the drive wheel on the stock origin side and the drive shaft for driving the drive wheel on the tip side are used to support the one- side rotating body and the other -side rotating body in the power transmission mechanism, the power transmission mechanism In order to separately support the one-side rotating body and the other -side rotating body, it is not necessary to separately provide a dedicated transmission shaft.

Therefore, by a power transmission mechanism having a simple structure, power can be transmitted from one of the stock source side drive wheel and the tip side drive wheel toward the other.
In the present invention, it is preferable that the power transmission mechanism is provided with a plate-shaped tension applying member that applies tension to the endless rotation band for power transmission.

In the present invention, in the tip transport device, after the transport path for locking and transporting the tip side of the cut grain culm to the movement path of the tip side endless rotation zone and the locked transport of the cut grain culm are completed. A return path back to the beginning of the transport path is provided.
It is preferable that the power transmission mechanism is provided at a position corresponding to the return path in a directional view along the rotation axis.

According to this configuration, since the power transmission mechanism is provided at a position corresponding to the return path in the tip transfer device, maintenance work for the power transmission mechanism can be easily performed. That is, the transport path side of the tip transport device is a portion corresponding to the grain culm transfer region, and is located on the central side in the width direction of the machine body, that is, a portion that has entered the inner part. On the other hand, since the return route is located on the outer side in the width direction of the machine, it is easy to perform maintenance work from the outside side of the machine.

In addition, since there is no cut grain culm in the return route, straw waste and fine dust are not generated during the transportation of the cut grain culm, so that the straw waste generated during the transportation of the cut grain culm and the grain culm are generated. , Can be prevented from wrapping around the power transmission mechanism.

In the present invention, the partition member has a plate shape and rotatably supports the tip side drive wheel and the other guide wheel in the tip transfer device.
The power transmission mechanism is supported on the lower surface side of the partition member , and is supported.
It is preferable that a cover that covers the power transmission mechanism from below is provided.

According to this configuration, the partition member has a plate shape and functions as a frame body of the tip transfer device, and rotatably supports the tip side drive wheel and other guide wheels .

The power transmission mechanism is stably supported on the lower surface side of the partition member that functions as such a frame body. Since the power transmission mechanism is covered from the lower side by the cover, it is possible to surely prevent the cut grain culm, the straw waste generated by the grain culm transport, and the like from being wrapped around the power transmission mechanism.

It is an overall side view of a combine. It is the whole plan view of a combine. It is a front view of a cutting part. It is a side view of the cutting part in a normal use state. It is a side view of the cut part in a folded state. It is a simplified plan view of the transport device in a normal use state. It is a simplified plan view of the transport device in a folded state. It is a figure which shows the transmission structure of a cutting part. It is a rear view of a part of the raising device. It is a top view of the cutting device. It is a vertical sectional front view of a scraping part and a cutting device. It is a partial plan view of a cutting device. It is a partial vertical sectional front view of a cutting device. It is a perspective view of the split support frame body on the folding side. It is a side view of the split support frame body on the folding side. It is a perspective view of the split support frame body on the folding side. It is a perspective view of another split support frame body. It is a side view of another split support frame body. It is the whole perspective view of the support frame body. It is an exploded perspective view of the rotation support part. It is a schematic plan view which shows the left side confluence transport part and a power transmission mechanism. It is a side view of the left side confluence transport part. It is a top view which shows the arrangement structure of a power transmission mechanism. It is an exploded perspective view which shows the attachment state of the winding prevention cover. It is a perspective view in the separated state of a guide mechanism. It is a partial notch rear view of a guide mechanism. It is a rear view which shows the separated state of the raised drive shaft. It is a rear view which shows the connection state of the raised drive shaft. It is a rear view of the raising speed change mechanism. It is a vertical sectional front view which shows the split state of a power transmission shaft. It is a vertical sectional front view which shows the connection state of a power transmission shaft.

Hereinafter, embodiments of the combine according to the present invention will be described with reference to the drawings.

〔overall structure〕
As shown in FIGS. 1 and 2, the combine according to the present invention includes a traveling machine 1 and a cutting section 2 for cutting 8 planted culms. The cutting portion 2 is connected to the traveling machine body 1 so as to swing up and down around the horizontal axis P1, and is provided so as to be driven and raised and lowered by the lift cylinder 3.

In this embodiment, when defining the front-rear direction of the machine, it is defined in FIGS. 1 and 2 that the side provided with the cutting portion 2 is the front side of the machine and the opposite side is the rear side of the machine. When defining the left-right direction of the aircraft, it is defined that the right side of the aircraft is the right side of the aircraft and the left side is the left side of the aircraft in the forward traveling state in which the vehicle travels forward with the front part of the aircraft in front. Therefore, the width direction of the machine corresponds to the left-right direction of the machine.

The traveling machine 1 is provided with a pair of left and right crawler traveling devices 4, a driving section 5 is provided on the right side (one side in the width direction) of the front portion of the machine, and a grain shaving cut by the cutting section 2 is provided behind the driving section 5. A threshing device 6 for threshing and a grain tank 7 for storing grains obtained in the threshing process are provided in a state of being lined up in the horizontal direction of the machine. The driving unit 5 is provided so as to be covered with the cabin 5a. Although not shown, the threshing device 6 handles and processes the tip side in the handling chamber while sandwiching and transporting the stock root of the harvested culm transported from the harvesting unit 2 by the threshing feed chain 8. Grains and dust are sorted by the sorting section provided at the bottom. The grains are stored in the grain tank 7, and the dust is discharged to the outside of the machine. The grains stored in the grain tank 7 can be discharged to the outside by the discharging device 7A. The discharged straw after the threshing process is shredded by the shredding device 9 and then discharged to the outside of the machine.

The cutting section 2 is provided with a plurality of (9) weeding tools 10 at the front end to guide the planting culms of the cutting target strips, and a plurality (8) corresponding to the number of cutting strips behind the cutting tool 10. A raising device 11 and a cutting device 12 for cutting the root of the planted culm to be harvested, and a vertical transport device for transporting the harvested culm in a vertical position toward the rear of the machine while gradually lying down. It is equipped with 13.

Of the nine weeding tools 10, the two weeding tools 10 located on the outermost side of the machine body divide the planted culms into those to be cut and those not to be cut, and the culms to be cut are weeded. It is introduced into the raising path adjacent to the tool 10 and guides the non-target culm to the lateral side of the raising path. In the other weeding tool 10, the culm to be planted in the two planting strips is weeded on both lateral sides of the weeding tool 10 and introduced into the raising route on both lateral sides of the weeding tool 10.

The cutting unit 2 is in a state of protruding to the left side larger than the crawler traveling device 4 on the left side (uncut side), and there is no risk of the uncut grain culm being trampled by the crawler traveling device 4, and the cutting work is performed satisfactorily. Can be done (see Figures 2 and 6).

[Raising device]
As shown in FIGS. 1 and 4, the raising device 11 is provided in an upright posture in a backward tilted state in which the lower end side is located on the front side of the machine body and the upper end side is located on the rear side of the machine body. Then, as shown in FIG. 9, the raising device 11 has a driving sprocket 15 located on the upper side, a tension sprocket 16 and a driven sprocket 17 located on the lower side inside the raising case 14 which also serves as a frame. An endless rotating chain 18 wound around each of the above is provided, and the endless rotating chain 18 is provided with a plurality of raising claws 19 at predetermined intervals along the longitudinal direction. The pulling claw 19 is supported by the endless rotating chain 18 so that the posture can be changed between an upright posture and a lying posture.

As shown in FIGS. 8 and 9, a pulling drive shaft 20 extending in the left-right direction is provided over the upper portions of the eight raising devices 11. The power from the raising drive shaft 20 is transmitted to the drive sprocket 15 via the gear interlocking relay transmission shaft 22 provided in the relay transmission case 21. The raised drive shaft 20 has a hexagonal cross section, and is configured to transmit power to the interlocking gear portion in a square fitted state.

The raising device 11 includes a raising action path H1 in which the raising claw 19 moves in a laterally protruding state, and a non-action return path H2 in which the raising claw 19 moves in a retired state. That is, one of the vertical movement paths on both the left and right sides of the endless rotation chain 18 is set as the raising action path H1, and the opposite side is set as the non-action return path H2. Although not shown, in the raising action path H1, a guide plate that guides the raising claw 19 upright is provided at a position where the endless rotating chain 18 passes.

The plurality of raising devices 11 are arranged so as to be arranged in the horizontal direction in a state where the raising action paths H1 are close to each other and the non-action return paths H2 are close to each other. The rotation direction of each raising device 11 is set so that the raising claw 19 moves upward in the raising action path H1. That is, the rotation directions of the endless rotating chains 18 are set to be opposite to each other in the raising devices 11 that are separated and contacted from each other.

In the raising action path H1, the raising device 11 having such a configuration moves ascending while the raising claw 19 projecting laterally is combed up to the grain culm, and when it reaches the ascending end, it is separated from the grain culm. It descends from the non-action return path H2 of the culm case 14 and returns to the action path H1 side. As a result, each raising device 11 raises and processes the planted culms introduced into the raising path by the raising claws 19 that move upward.

[Cutting device]
The cutting device 12 is formed in a long shape over the entire width in the left-right direction (corresponding to the cutting width direction) so as to act on the planted culms of all the cutting target rows (8 rows), and has a well-known structure of hair clipper type cutting. It is composed of blades. Of the eight cutting strips, the cutting device 12 is divided into a left cutting portion 12A acting on the left two cutting strips and a right cutting portion 12B acting on the right six cutting strips.

The right side cut portion 12B will be described.
As shown in FIG. 10, the right-side cutting portion 12B is divided into two sets of hair clipper-type cutting blades 25 arranged side by side in the left-right direction, and left and right cutting blade driving mechanisms for driving the two sets of cutting blades 25, respectively. It has 26 and. The left and right cutting blades 25 include a fixed blade 27 in which a large number of teeth 27a are arranged side by side in the left-right direction, and a movable blade 28 in which a large number of teeth 28a are arranged side by side in a state of being in sliding contact with the upper side of the fixed blade 27. It includes a cradle 29 that receives and supports the fixed blade 27, and a plurality of knife clips 30 that prevent the movable blade 28 from rising.

As shown in FIG. 10, a movable blade operating body 31 is provided near the outside of each of the left and right movable blades 28, and the movable blade 28 is fixed by driving the cutting blade driving mechanism 26 acting on the movable blade operating body 31. It is configured to reciprocate left and right along the width direction of the machine with respect to 27.

The movable blade operating body 31 is provided with a U-shaped engagement groove 32 in a plan view. The cutting blade drive mechanism 26 includes an arm 34 having an operating roller 33 engaged in the engaging groove 32 of the movable blade operating body 31 at one end, and an interlocking rod 35 having one end connected to the other end of the arm 34. A drive rotating body 36 that functions as a crank arm connected to the other end side of the interlocking rod 35 is provided. Then, the rotational driving force of the driving rotating body 36 is converted into reciprocating power to drive the movable blade 28 reciprocating left and right.

By sliding the movable blade 28 back and forth in the left-right direction, the root of the planted grain culm is cut in cooperation with the movable blade 28 and the fixed blade 27. The movable blades 28 of the cutting blades 25 on the left and right sides are configured to slide and move in opposite directions to each other, so that the vibration caused by the sliding operation of the movable blades 28 is minimized.

As shown in FIGS. 12 and 13, the abutting portion between the left and right middle of the cutting blades 25 on both the left and right sides is provided with a fixed blade 37 on the upper side located above the movable blades 28 on both the left and right sides. As described above, in the butt portion, the fixed blade 37 is located on the upper side, so that dust is prevented from being caught between the fixed blade 37 and the movable blade 28 at the butt portion. The fixed blade 37 on the upper side is provided separately on each of the left and right cutting blades 25.

The left side cutting portion 12A will be described.
As shown in FIG. 10, the left cutting portion 12A includes a hair clipper type cutting blade 38 having the same configuration as the cutting blade 25 in the right cutting portion 12B, and a cutting blade driving mechanism 39 (other power transmission) for driving the cutting blade 38. It is equipped with an example of the part). Since the cutting blade 38 is the same as the cutting blade 25 of the right side cutting portion 12B except that the number of cutting rows is different, detailed description thereof will be omitted. Since the cutting blade drive mechanism 39 is the same as the cutting blade drive mechanism 26 of the right side cutting portion 12B, detailed description thereof will be omitted. As described above, the left side cutting portion 12A and the right side cutting portion 12B are respectively provided with cutting blade drive mechanisms 26 and 39, respectively.

The butt portion between the cutting blade 25 located on the left side of the right cutting portion 12B and the cutting blade 38 of the left cutting portion 12A has an upper side located on the upper side of the movable blade 28 as in the butt portion of the right cutting portion 12B. The fixed blade 37 is provided. The upper fixed blade 37 is separately provided on the left cutting blade 25 in the right cutting portion 12B and the cutting blade 38 in the left cutting portion 12A. The movable blade 28 in the cutting blade 38 of the left cutting portion 12A is configured to slide and move in the direction opposite to the sliding moving direction of the movable blade 28 in the left cutting blade 25 in the right cutting portion 12B.

The left side cutting portion 12A and the right side cutting portion 12B are provided with the movable blade 28, the fixed blade 27, and the pedestal 29, respectively, formed separately, and are provided in a state of being closely arranged in a butt state. In the stored state (folded state) described later, they are provided so as to be separable from each other.

[Vertical transport device]
As shown in FIGS. 4 and 6, the vertical transport device 13 has a plurality of scraping portions 40 for scraping backward while gathering two rows of cut grain culms, the first row and the second row 2 from the right side. The first intermediate transport section 41 that transports the cut grain culms of the strips to the confluence on the left rear side, and the two strips of the cut grain culms of the third and fourth rows from the right side are transported to the confluence on the rear side. 2nd intermediate transport section 42, 3rd intermediate transport section 43 that transports 2 rows of cut grain culms of 5th and 6th rows from the right to the confluence, 7th and 8th rows from the right The cut grain culms transported by the 4th intermediate transport section 44 and the 4th intermediate transport section 44, which transport the cut grain culms for 2 rows, that is, the 2 rows at the left end, are inherited and transported to the confluence. Left side merging transport section 45 as a grain culm transport device according to the present invention, supply transport section 46 for transporting eight cut grain culms merged at the merging point to the start end of the grain removal feed chain 8, first intermediate transport section. It is provided with a first tip locking transport device 47 that acts on the tip side of the harvested culm transported at 41 and the culm merged at the merging point to lock and guide the tip side.

As shown in FIGS. An upper scraping device 50 consisting of a lower scraping device 50 (a scraping rotating body having a substantially star-shaped outer shape) and an upper scraping device consisting of a pair of endless rotating belts with protrusions located above the lower scraping device 50. It is provided with a built-in device 52. Then, four sets of such scraping portions 40 are provided in a state of being lined up in the left-right direction (cutting width direction).

The lower scraping device 50 scrapes the stock root side of the two cut grain culms cut by the cutting device 12 between the pair of packers 48 and 49 and sends them out from between the packers toward the rear of the machine body. The lower scraping device 50 is configured as a drive-side packer to which one of the pair of packers 48 and 49 is powered, and the other packer 49 meshes with the drive-side packer 48 to act as a driven device. It is configured as a driven packer.

The pair of endless rotating belts 51 in the upper scraping device 52 are configured to rotate by transmitting power from the left and right packers 48 and 49, respectively, and lock the stock root side of the two cutting grain culms. It is scraped in by transportation and sent out to the rear.

As shown in FIG. 6, the lower scraping device 50 located at the right end and the lower scraping device 50 third from the right side are arranged at a high position, and the lower scraping device 50 and the second lower scraping device 50 from the right side. The lower scraping device 50 located at the left end is located at a lower position.

As shown in FIG. 6, the first intermediate transport section 41 transports the two rows of cut grain culms scraped by the rightmost scraping section 40 toward the left rear side while sandwiching the stock roots. It is composed of a 1-stock culm holding and transporting device 53 and a front half portion of the first tip locking transporting device 47.

The first stock holding transfer device 53 includes an endless rotating chain wound around a plurality of sprockets. Although not shown, a pinching rail is provided facing the endless rotating chain, and the endless rotating chain and the pinching rail hold the root of the cut grain culm and convey it to the confluence.

The first tip locking transfer device 47 is a tip guide plate 58 (FIG. 4) that guides the endless rotating chain 57 with locking protrusions wound over a plurality of sprockets while mounting the tip portion of the cut grain culm. See) and. The endless rotating chain 57 is provided with a locking projection 59 at a predetermined pitch, and the endless rotating chain 57 rotates to lock the tip side of the cut grain culm while locking the tip of the cut grain culm. Is configured to be transported to the left rear while being placed and guided by the tip guide plate 58. The latter half of the first tip locking transport device 47 is configured to lock and transport the tip side to the eight cutting grain culms merged at the confluence.

The second intermediate transport section 42 transports the second intermediate stock toward the confluence on the rear side while sandwiching the stock roots of the two cut grain culms scraped by the second scraping portion 40 from the right end. It is provided with a former pinching and transporting device 61 and a second intermediate tip locking and transporting device 62 that transports the cut grain culms for two rows toward the rear side while locking and transporting the tip side.

The second intermediate stock holding and transporting device 61 includes an endless rotating chain wound around a plurality of sprockets. Although not shown, a pinching rail is provided facing the endless rotating chain, and the endless rotating chain and the pinching rail hold the root of the cut grain culm and convey it to the confluence.

The second intermediate tip locking transfer device 62 includes an endless rotating chain with a locking projection wound over a plurality of sprockets, and the endless rotating chain rotates to lock the tip side of the cut grain culm. At the same time, it is transported to the confluence on the rear side.

The third intermediate transport section 43 transfers the stock of the two cut grain culms scraped by the third scraping section 40 from the right end toward the confluence on the rear side. It is provided with a former pinching and transporting device 67 and a third intermediate tip locking and transporting device 68 that transports the cut grain culms for two rows toward the rear side while locking and transporting the tip side.

The third intermediate stock holding and transporting device 67 includes an endless rotating chain wound around a plurality of sprockets. Although not shown, a pinching rail is provided facing the endless rotating chain, and the endless rotating chain and the pinching rail hold the root of the cut grain culm and convey it to the confluence.

The third intermediate tip locking transfer device 68 includes an endless rotating chain with locking protrusions wound over a plurality of sprockets, and the endless rotating chain rotates to lock the tip side of the cut grain culm. At the same time, it is transported to the confluence on the rear side.

The fourth intermediate transport unit 44 and the fourth intermediate stock element holding transport device 74 that transports the stock roots of the two cut grain culms scraped by the leftmost scraping unit 40 toward the rear while sandwiching the stock roots. 2. It is provided with a fourth intermediate tip locking transport device 75 that transports the cut grain culms for two rows toward the rear side while locking and transporting the tip side.

The fourth intermediate stock holding and transporting device 74 includes an endless rotating chain wound around a plurality of sprockets. Although not shown, a holding rail is provided facing the endless rotating chain, and the holding rail holds the stock of the cut grain culm by the endless rotating chain and the holding rail and conveys the stock to the rear.

The fourth intermediate tip locking transfer device 75 includes an endless rotating chain with locking projections wound over a plurality of sprockets. The endless rotating chain rotates to lock the tip side of the cut grain culm and convey it to the confluence on the rear side.

The left side merging transport unit 45 inherits the harvested grain culm transported by the fourth intermediate transport unit 44, and transfers the stock culm toward the rear merging point while sandwiching the stock culm with the left merging stock culm holding transport device 77. It is provided with a left side merging tip locking transport device 78 for transporting the harvested grain culm toward the rear side while locking and transporting the tip side. The left side confluence transport unit 45 merges the cut grain culms transported by the third intermediate transport unit 43 during the transport. The cut grain culms transported by the fourth intermediate transport section 44 and the harvested grain culms transported by the third intermediate transport section 43 are combined with the harvested grain culms transported by the first intermediate transport section 41 and the second intermediate transport section 42. Transport to the merging point. As a result, the left side merging transport unit 45 is configured as a large transport unit having a long transport path.

As shown in FIG. 21, the left-side merging stock-holding and transporting device 77 has a stock-source side drive sprocket 77A as a stock-source side drive wheel, three driven sprockets 77B as other guide wheels, and winding over them. It is provided with a stock origin side endless rotation chain 77C as a stock origin side endless rotation band. Although not shown, a holding rail is provided facing the endless rotating chain 81 on the stock origin side, and the stocking root of the cut grain culm is sandwiched between the endless rotating chain 81 on the stock origin side and the holding rail and transported to the confluence. do.

As shown in FIG. 21, the left-side merging tip locking transfer device 78 is wound around the tip-side drive sprocket 78A as the tip-side drive wheel and two driven sprockets 78B as other guide wheels. It is provided with a tip-side endless rotation chain 78C with a locking projection as a tip-side endless rotation band. The endless rotation chain 78C on the tip side rotates to lock the tip side of the cut grain culm and convey it to the confluence on the rear side.

The cut grain culms transported by the first intermediate transport unit 41, the second intermediate transport unit 42, the third intermediate transport unit 43, and the left confluence transport unit 45 as described above are supplied after merging at the confluence. It is transported backward by the transport unit 46.

As shown in FIG. 6, the supply transport unit 46 sandwiches the stock roots of the harvested culms merged at the confluence and transports them toward the threshing feed chain 8. It is provided with a delivery supply device 85 for delivering cut grain culms from the feed transfer device 84 to the starting end of the threshing feed chain 8. The handling depth transfer device 84 and the transfer supply device 85 both include an endless rotating chain wound over a plurality of sprockets. Although not shown, a holding rail is provided facing the endless rotating chain, and the stock of the cut grain culm is held and conveyed by the endless rotating chain and the holding rail.

Although not shown, the handling depth transfer device 84 is swingably supported so that the transfer end side moves in the culm length direction with the transfer start end side as a fulcrum, and the cut grain culm inherited from the confluence is supported in the culm length direction ( The position is changed in the vertical direction) so that the depth of penetration into the threshing device 6 can be changed and adjusted.

Next, the frame structure of the cutting unit 2 will be described.
As shown in FIG. 19, the cutting portion 2 is entirely supported by the support frame body F, and as shown in FIG. 4, is swingably supported by the support base 90 on the machine body side around the horizontal axis P1. .. The support frame body F is configured by integrally connecting a plurality of frames as described below.

As shown in FIG. 4, a cylindrical support frame 91 that supports the entire cutting section 2 in an ascending / descending manner is provided. In the support frame 91, a lateral pivot portion 92 (see FIG. 19) provided on the base end side of the upper rear portion is rotatably supported by a support base 90 on the machine body side around the horizontal axis P1. The support frame 91 extends from the support base 90 toward the lower front side of the machine body.

As shown in FIG. 19, a cylindrical rear lateral frame 93 extending in the left-right direction, that is, in the cutting width direction is connected to the front end portion of the support frame 91. The weeding frames 94 on both the left and right sides are connected to both ends of the rear horizontal frame 93 in the horizontal width direction of the machine in a state of extending toward the front of the machine. A square cylindrical intermediate horizontal frame 95 (an example of a horizontal frame) extending in the horizontal width direction of the machine body is connected in a state of being erected over the front and rear intermediate portions of the weeding frames 94 at both left and right ends. The cutting device 12 is supported by the intermediate portion horizontal frame 95.

A plurality of grass frames 94 are provided at intervals between the grass frames 94 at both left and right ends, and the rear end of the grass frame 94 at the intermediate portion thereof is connected to the horizontal frame 95 at the intermediate portion. It is cantilevered toward the front. A total of nine weeding frames 94 are provided, and each weeding tool 10 is provided at the front end of each weeding frame 94.

As shown in FIGS. 4 and 19, a cylindrical left vertical frame 96 extends upward from the left end of the rear horizontal frame 93. A rod-shaped right vertical frame 97 extends upward from the right end of the rear horizontal frame 93. Then, the upper side horizontal frame 98 is connected to the upper end of the left side vertical frame 96 and the upper end of the right side vertical frame 97. The upper sideways frame 98 extends along the left-right direction over the upper ends of each of the eight raising devices 11, and is connected to the upper ends of each raising device 11.

Each of the eight raising devices 11 is connected to the upper side sideways frame 98 on the upper side and to the weeding frame 94 on the lower side. Therefore, each raising device 11 functions as a frame member that connects the upper side horizontal frame 98 and the weeding frame 94 in the connected state.

Although not described in detail, each raising device 11 is integrally rotatably supported around the horizontal axis with respect to the upper side horizontal frame 98 together with the relay transmission case 21. When the connection to the weeding frame 94 is released, the entire raising device 11 can be rotated around the lateral axis to greatly open the front portion of the cutting portion 2.

When the raising device 11 is swung open, a load is applied to the upper side horizontal frame 98. Therefore, in order to secure the rigidity, the upper side horizontal frame 98 and the weeding frame 94 are combined as shown in FIGS. 18 and 19. A plurality of vertically oriented auxiliary connecting rods 100 for connecting are provided. Further, an upper detour frame 101 for connecting the upper end portion of the support frame 91 and the lateral intermediate portion of the upper side lateral frame 98 is provided in a state of detouring above the vertical transport device 13.

A support frame body F that supports the entire cutting portion 2 is formed by connecting a plurality of types of frames as described above. In the support frame F, the weeding frame 94 located at both ends in the width direction of the machine body, the left and right vertical frames 96 and 97, and the raising device 11 located at both ends in the width direction of the machine body form the machine body. They are arranged in a substantially triangular shape when viewed from the side, and they are connected. As a result, a strong support structure is formed at both ends in the width direction of the airframe.

[Transmission structure]
Next, the transmission structure for the cutting unit 2 will be described.
As shown in FIG. 4, the power after shifting the output of an engine (not shown) by the continuously variable transmission 102 for cutting is laterally transmitted inside the pivot portion 92 (see FIG. 19) of the support frame 91. It is transmitted to the shaft 103. Then, as shown in FIG. 8, power is transmitted from the lateral transmission shaft 103 via the front-rear input shaft 104 provided inside the support frame 91.

The above-mentioned post-shift power is transmitted from the front-rear input shaft 104 to the lateral power transmission shaft 105 provided inside the rear lateral frame 93. The power transmission shaft 105 is provided in a state of extending over substantially the entire width of the cutting portion 2 in the cutting width direction. Two sets of cutting blades 25 of the right side cutting part 12B of the cutting device 12 and one set of the left side cutting part 12A are cut through the branch portions 106 provided at both side ends and the left-right intermediate portion of the power transmission shaft 105. Power is transmitted to each of the blades 38.

Further, power is transmitted from the branch portion 107 in the middle of the power transmission shaft 105 to the left confluence transport portion 45, and the vertical portion provided inside the left vertical frame 96 from the branch portion 108 provided on the left side of the power transmission shaft 105. Power is transmitted to each of the eight raising devices 11, the fourth intermediate transport section 44, and the leftmost scraping section 40 via the vertical transmission shaft 109 as the orientation relay shaft.

Next, the drive structure of the left side merging transfer unit 45 will be described.
As shown in FIGS. The side drive sprocket 78A is provided so as to be located at a different position in the direction along the rotation axis of the stock origin side drive sprocket 77A.

To add an explanation, as shown in FIG. 21, in the left side merging stock holding and transporting device 77, one driven sprocket 77B is located on the upstream side of the transport, and two sprockets 77B are separated in the front-rear direction on the downstream side of the transport. The driven sprocket 77B of the above is located, and a total of three driven sprockets 77B arranged in a substantially triangular shape in a plan view are provided, and an endless rotation chain 77C on the stock origin side is wound around them. Further, one drive sprocket 77A that acts to lock the tensioning portion between the driven sprocket 77B on the upstream side of the transport and the driven sprocket on the rear side on the downstream side of the transport is provided.

In the endless rotary chain 77C on the stock origin side, a transport path for sandwiching and transporting the cut grain culm is formed at a position stretched by the driven sprocket 77B on the upstream side of the transport and the driven sprocket 77B on the front side on the downstream side of the transport. Has been done. The drive sprocket 77A meshes with the middle part of the return path that does not carry the cut grain culm. On both sides of the drive sprocket 77A, a pair of guide sprockets 77D for increasing the winding length of the drive sprocket 77A are provided.

As shown in FIG. 21, in the left side merging tip locking transfer device 78, one driven sprocket 78B is located on the upstream side of the transfer, and one driven sprocket 78B is separated in the front-rear direction on the downstream side of the transfer. And the drive sprockets 78A are located, and the tip-side endless rotating chain 78C is wound around a total of three sprockets 78A and 78B arranged in a substantially triangular shape in a plan view.

The left-side merging tip locking transport device 78 locks and transports the cut grain culm at a position stretched by the sprocket 78B on the upstream side of the transport and the sprocket 78B located on the front side of the downstream side of the transport. Path Q1 is formed. Then, at the portion stretched by the sprocket 78B on the upstream side of the transport and the drive sprocket 78A located on the rear side of the end side of the downstream end of the transport, the start end of the transport path is completed after the locked transport of the cut grain culm is completed. A return path Q2 returning to the portion is formed.

As shown in FIGS. 22 and 23, the left-side merging tip locking transport device 78 includes a plate-shaped transport support 78D composed of a substantially triangular plate body in a plan view, and includes a drive sprocket 78A and two driven sprockets 78B. Are each rotatably supported by the transport support 78D. The tip-side endless rotating chain 78C is provided on the upper surface side of the transport support 78D.

A power transmission mechanism 130 for relay that is provided over the stock origin side drive sprocket 77A and the tip side drive sprocket 78A and transmits power between the stock origin side drive sprocket 77A and the tip side drive sprocket 78A is provided. There is.

As shown in FIG. 21, the power transmission mechanism 130 includes a relay drive sprocket 132 and a tip side drive sprocket 78A as a one-side rotating body that rotates around the same axis as the drive shaft 131 that drives the stock source side drive sprocket 77A. As a relay driven sprocket 134 as the other side rotating body that rotates around the same axis as the drive shaft 133 that drives the relay, and as an endless rotation band wound over the relay drive sprocket 132 and the relay driven sprocket 134. It is equipped with an endless rotating chain 135 for relaying.

The power transmission mechanism 130 is supported on the lower surface side of the transport support 78D. That is, as shown in FIG. 22, the drive shaft 131 for driving the stock origin side drive sprocket 77A extends upward from the branch portion 107 in the middle of the power transmission shaft 105, and the stock origin side drive sprocket 77A is outside. It is fitted and attached. The drive shaft 131 extends upward to the lower surface side of the transport support 78D, and its upper end is rotatably supported by the transport support 78D. A relay drive sprocket 132 is mounted on the drive shaft 131. The left merging tip locking transport device 78 and the power transmission mechanism 130 are provided in a state of being close to each other in the vertical direction, and the left merging tip locking transport device 78 and the power transmission mechanism 130 are separated by the transport support 78D. It is composed.
Further, the transport support 78D is in a state of covering the upper part of the power transmission mechanism 130. Therefore, the transfer support 78D is located between the left side merging tip locking transfer device 78 as the tip transfer device and the power transmission mechanism 130, and the left side merging tip locking transfer device 78 and the power transmission mechanism 130. It is configured to function as a partition member for partitioning and.

As shown in FIG. 22, the drive shaft 133 that supports the tip side drive sprocket 78A extends to the lower surface side of the transport support 78D through the transport support 78D. A relay driven sprocket 134 is attached to a portion of the drive shaft 133 that protrudes downward from the transport support 78D. Then, on the lower surface side of the transport support 78D, the relay endless rotating chain 135 is wound and stretched over the relay drive sprocket 132 and the relay driven sprocket 134. A leaf spring type tie toner 136 is provided as a tension applying member for applying a tension force to the relay endless rotating chain 135. The titner 136 is provided in a state where one end side is supported by a pin 136a fixed to the lower surface side of the transport support 78D and the other end side is abutted against the receiving body 136b.

As shown in FIG. 21, the power transmission mechanism 130 is provided at a position corresponding to the return path Q2 in the left side merging tip locking transfer device 78.

A wrapping prevention cover 140 that covers the power transmission mechanism 130 from below is provided.
As shown in FIG. 24, the winding prevention cover 140 has a substantially U-shaped cross section at the rear side portion covering the transport end side provided with the relay driven sprocket 134 in the power transmission mechanism 130. On the other hand, the front side portion covering the transport start end side provided with the relay drive sprocket 132 is formed in a substantially L-shaped cross section.

To add an explanation, the left-side merging tip locking transport device 78 is provided in a rear-up tilted posture, with the transport start end located on the front lower side and the transport end portion located on the rear upper side. Therefore, since the rear side portion of the wrapping prevention cover 140 is located at a high position, it is formed in a substantially U-shaped cross section to widely cover the portion facing the outside in order to prevent straw dust and the like from falling. ..

The front side portion of the wrapping prevention cover 140 is wide so that the left side surface 141 covers substantially the entire left lateral side outer side of the power transmission mechanism 130, and the outside of the relay endless rotating chain 135. A narrow lower surface 142 is provided so as to cover the portion facing the surface from below, and the cross section is formed in a substantially L-shape. Further, the right side portion is largely opened for maintenance of the titner 136 and for easily discharging the invading dust downward.

The wrapping prevention cover 140 is fixed to the lower surface side of the transport support 78D at a plurality of locations by bolt connection. As shown in FIG. 24, a U-shaped notch 143 is formed on the right side (inner back side) of the rear side portion of the wrapping prevention cover 140. A bracket 144 is integrally connected to a portion of the transport support 78D corresponding to the notch 143, and a bolt 146 is preliminarily attached to the bracket 144. The wrapping prevention cover 140 can be attached from the lower side so that the bolt 146 can be inserted into the notch 143, and the bolt 146 can be tightened from the outer side.

Bolts 148 are pre-mounted on the front end side portion and the rear end side portion of the left side surface 141 of the wrapping prevention cover 140, respectively. A bracket 149 is integrally connected to a portion of the transport support 78D corresponding to the bolt 148, and a U-shaped notch 150 is formed in the bracket 149. The wrapping prevention cover 140 can be mounted from the lower side and the bolt 148 can be tightened from the outer side so that the pre-mounted bolt 148 enters the notch 150.

That is, the wrapping prevention cover 140 is mounted from the lower side of the transport support 78D so that the bolts 146 and 148 enter the notches 143 and 150 at the three connecting points, and the bolts 146 and 148 are fastened to transport the cover 140. It can be fixed to the support 78D.

As shown in FIG. 8, the power is branched from the upper and lower parts of the vertical transmission shaft 109, the power is transmitted to the fourth intermediate transfer unit 44, and the leftmost side (fourth from the right) from the fourth intermediate transfer unit 44. Power is transmitted to the scraping portion 40.

A lateral pulling drive shaft 20 extending across the upper portions of the raising device 11 is provided along the upper side lateral frame 98 in a state extending over the entire width in the left-right direction. Then, the power from the vertical transmission shaft 109 is changed by the gear shift type raising speed change mechanism 110, and then transmitted to the raising drive shaft 20. Power is transmitted from the raising drive shaft 20 to each of the eight raising devices 11.

Although not described in detail, the raising speed change mechanism 110 is configured to be able to switch to three stages of low speed, medium speed, and high speed by operating the operation shaft 110A that can be slid in the vertical direction. A speed change operating tool (not shown) provided at a position close to the driving unit 5 is interlocked with the operating shaft 110A via the link mechanism 111. As shown in FIG. 29, the link mechanism 111 includes a substantially L-shaped swing link 111A rotatably supported around the front-rear axis P2 under the transmission case 110B of the raising speed change mechanism 110, and a swing link. It is provided with a push-pull rod 111B or the like that interlocks and connects the upper end portion of the 111A and the speed change operation tool.

As shown in FIG. 8, three sets of scraping portions 40, a first intermediate transport unit 41, a second intermediate transport unit 42, a third intermediate transport unit 43, and a supply are located on the right side from the transmission intermediate portion of the input shaft 104. Power is transmitted to each of the transport units 46. Power is transmitted from the lateral transmission shaft 103 to the endless rotating chain 57 in the first tip locking transfer device 47.

Power is branched and transmitted to the first branch transmission shaft 113 by the first branch portion 112 provided in the middle of the transmission of the input shaft 104, and the second intermediate stock in the second intermediate transport portion 42 from the first branch transmission shaft 113. Power is transmitted to the original pinching transfer device 61 and the second intermediate tip locking transfer device 62, respectively. Then, the power of the second intermediate stock holding and transporting device 61 is transmitted to the second scraping portion 40 from the right side.

Power is branched from the middle part of the first branch transmission shaft 113 to the second branch transmission shaft 114, and the third intermediate stock element holding transfer device 67 and the third intermediate tip of the second branch transmission shaft 114 to the third intermediate transfer section 43. Power is transmitted to each of the locking transfer devices 68. Then, the power of the third intermediate stock holding and transporting device 67 is transmitted to the third scraping portion 40 from the right end.

Power is branched to the third branch transmission shaft 118 and the fourth branch transmission shaft 119 by the second branch portion 117 provided in the middle of the transmission of the input shaft 104, and the power is branched from the third branch transmission shaft 118 to the first intermediate transport portion 41. The power is transmitted to the first stock holding and transporting device 53 in the above, and the power of the first stock holding and transporting device 53 is transmitted to the rightmost scraping portion 40. Power is transmitted from the fourth branch transmission shaft 119 to the handling depth transfer device 84.

[Cut structure]
The cutting section 2 is divided into one side split cutting section 2A and the other side split cutting section 2B at an intermediate position in the cutting width direction, and the one side split cutting section 2A is relative to the other side split cutting section 2B. It is configured to be able to change the posture and switch to a stored state where the width is shorter than the width in the normal use state.

That is, the portion corresponding to the left two rows constitutes the one-side split cutting section 2A, the portion corresponding to the right six rows constitutes the other side split cutting section 2B, and the one-side split cutting section 2A constitutes the other. A state in which the side split cutting section 2B is lined up in a series in the left-right direction (see FIGS. 1 to 4 and 6) (corresponding to a normal use state), and a front surface of the one-side split cutting section 2A and the other side split cutting section 2B. It is rotatably supported around the vertical axis X over the state of being folded and stored (see FIGS. 5 and 7) (corresponding to the stored state) with the front surface facing each other.

That is, in the cutting width direction, a rotation support shaft (support pin) in a vertical posture as described later is provided between the one-side split cutting section 2A and the other-side split cutting section 2B, and the one-side split cutting section is provided. 2A rotates around the vertical axis X of the rotation support shaft with respect to the other side split cutting portion 2B, and the cutting portion 2 is switched between the normal use state and the stored state.

To add an explanation, the cutting unit 2 is configured such that the raising device 11, the cutting device 12, and the vertical transfer device 13 can be integrally folded around the vertical axis X. A shaft core X for rotation is provided between the sixth raising device 11 and the seventh raising device 11 from the right end.

Since the sixth raising device 11 and the seventh raising device 11 from the right end are adjacent to each other in a state where the non-action return paths H2 are close to each other, they are rotated around the axis X set between them. When folded, the raising claws 19 can be smoothly stored without interfering with each other.

In the left side cutting portion 12A and the right side cutting portion 12B, not only the movable blade 28 and the fixed blade 27 but also the pedestal 29 are formed separately, and they are configured to be separable.

The vertical transport device 13 includes a one-side transport unit 13A corresponding to the one-side split cutting section 2A and a other-side transport section 13B corresponding to the other-side split cutting section 2B. That is, as shown in FIG. 7, the fourth intermediate transport section 44 and the leftmost scraping section 40 correspond to the one-side transport section 13A, and the other transport devices, that is, the left side merging transport section 45. , Each of the three sets of scraping portions 40, the first intermediate transport unit 41, the second intermediate transport unit 42, the third intermediate transport unit 43, and the supply transport unit 46 located on the right side correspond to the other side transport unit 13B. ing.

As shown in FIG. 6, the left two cutting grain culms scraped from the leftmost scraping section 40 and transported rearward by the fourth intermediate transport section 44 are received by the left confluence transport section 45. After that, it is conveyed toward the merging point by the left merging transfer section 45. Therefore, the one-side transport unit 13A (the fourth intermediate transport unit 44 and the leftmost scraping unit 40) independently transports the cut grain culm to the position (reception position) where the other-side transport unit 13B transports. It is configured as follows.

As shown in FIGS. It is provided so as to enter the lower side so as to partially overlap along the vertical direction. Further, the fourth intermediate tip locking transport device in the fourth intermediate transport section 44 is downward so as to partially overlap with the left merging tip locking transport device 78 in the left merging transport section 45 in the vertical direction. It is provided in a state where it enters the side.

The rear horizontal frame 93 is divided into left and right at the boundary portion corresponding to the separation portion between the one-side split cutting portion 2A and the other-side split cutting portion 2B, and the rear horizontal frame 93 is separably connected to the flange. Then, in the stored state, it is separated on both the left and right sides, and in the normal use state, it is configured to be integrally connected.

The intermediate portion horizontal frame 95 is formed into the one-side frame body 95A and the other-side frame body 95B along the cutting width direction at the boundary portion corresponding to the separation portion between the one-side split cutting portion 2A and the other-side split cutting portion 2B. It is divided and formed. Then, in the stored state, the one-side frame body 95A and the other-side frame body 95B are separated, and in the normal use state, the one-side frame body 95A and the other-side frame body 95B are connected.

As described above, in the support frame body F of the cutting portion 2, the weeding frame 94, the vertically oriented frames 96, 97 and the raising device 11 are arranged in a substantially triangular shape in the side view of the machine body at both ends in the width direction of the machine body. , By connecting them, a strong support structure is formed. As a result, even if the support frame body F is separated at the above-mentioned separation points, a strong frame structure is formed in each of the one-side split cutting section 2A and the other-side split cutting section 2B, and the support frame body F has support strength. It is composed.

The one-sided split support frame FA corresponding to the one-sided split cutting section 2A in the support frame body F of the cutting section 2 and the other-side split support frame body FB corresponding to the other cutting section split body are raised. It is parallel to the inclined surface of the device 11 and is rotatably connected around the axis X set on the front side of the machine body with respect to the raising device 11.

As shown in FIGS. 14 to 19, in each of the split support frame FA on one side and the split support frame FB on the other side, the upper and lower sideways frames 98 and the weeding frame 94 are moved up and down in the vicinity of the split points. The connecting frames 121 and 122 extending in the direction are provided.

As shown in FIGS. 17 and 18, the connecting frame 121 on the other side of the split support frame FB side extends in the vertical direction, and the split portion of the upper side horizontal frame 98 and the seventh from the right end. It is connected to the weeding frame 94, respectively. The connecting frame 121 is formed in a square cylinder shape and is formed in a substantially L shape in a side view. The upper portion of the connecting frame 121 is formed in an upright posture in a backward tilted state substantially parallel to the front surface of the raising case 14 of the raising device 11 when viewed from the side.

As shown in FIGS. 14, 15 and 16, the connecting frame 122 of the split support frame FA on one side extends in the vertical direction, and extends forward from the split portion of the upper side horizontal frame 98 and the rear horizontal frame 93. It is connected to the extended front-back support rod 123, respectively. The front end portion of the front-rear support rod 123 and the upper side horizontal frame 98 are connected by a vertical auxiliary connection rod 124. Therefore, the front-rear support rod 123 corresponds to the front-rear frame, and the vertical auxiliary connection rod 124 reinforces the support strength of the connection frame 122.

The connecting frame 122 provided in the split support frame FA on one side is also formed in a square tube shape like the connecting frame 121 on the split support frame side on the other side, and is formed in a substantially L shape in a side view. There is. The upper portion is formed in an upright posture in a backward tilted state substantially parallel to the front surface of the raising case 14 of the raising device 11 in a side view.

Each of the connecting frames 121 and 122 has a rotation support portion that rotatably supports the split support frame FA on one side with respect to the split support frame FB on the other side around the axis X. It is attached. The rotation support portion is provided so as to project toward the front side of the machine body with respect to the raising device 11. That is, the shaft core X is set parallel to the inclined surface of the raising device 11 and on the front side of the machine body with respect to the raising device 11.

As shown in FIGS. 17, 18 and 20, the connecting frame 121 of the split support frame on the other side is used as a rotation support shaft in a state of being fixed by brackets 125 at two locations at intervals of upper and lower parts. It is equipped with an upward support pin 126. The bracket 125 and the support pin 126 form a rotation support portion. As shown in FIGS. 14, 16 and 20, the L-shaped side view having an engaging hole 127 in which the upper and lower support pins 126 are fitted is formed in the connecting frame 122 of the split support frame FA on one side. It is provided with a coupling member 128. The engaging member 128 constitutes a rotation support portion. Therefore, the support pin 126 as the rotation support shaft is provided in a state of extending vertically along the front surface of the raising device 11 on the front side of the machine body of the raising device 11.

By receiving and supporting the engaging member 128 with the bracket 125 in a state where the engaging member 128 is engaged with the support pin 126 in the engaging hole 127 of the engaging member 128, the split support frame FA on the other side becomes the support pin 126. It is rotatably supported around the shaft core X.

As shown in FIGS. 5 and 7, in the stored state, the front surface of the one-side split cutting section 2A and the front surface of the other-side split cutting section 2B are folded so as to face each other. In this case, the weeding tool 10 of the one-sided split cutting section 2A is removed in order to avoid interference with the weeding tool 10 on the other side of the other-side split cutting section 2B.

As shown in FIGS. 5 and 7, the weeding frame 94 provided in the one-sided split cutting section 2A and the weeding frame 94 provided in the other-side split cutting section 2B have a cutting width in a plan view in a stored state. It is provided so as to be displaced in the direction and to overlap in the side view.

Next, the transmission axis division structure will be described.
The power transmission shaft 105 provided inside the rear horizontal frame 93 has one side shaft portion 105A on the one side split cutting portion 2A side and the other side shaft on the other side split cutting portion 2B side at an intermediate position in the cutting width direction. It is separately formed into the portion 105B, and in a normal use state, the one side shaft portion 105A and the other side shaft portion 105B are interlocked and connected in a linearly connected state via a meshing clutch 105C as a shaft connecting portion. In the stored state, the one-side shaft portion 105A and the other-side shaft portion 105B are separated from each other.

As shown in FIGS. 30 and 31, the rear horizontal frame 93 has the one-sided frame portion 93A and the other-side frame portion 93B at the boundary portion corresponding to the separation portion between the one-side split cutting portion 2A and the other-side split cutting portion 2B. It is divided into left and right parts, and the frame portions 93A and 93B are flange-connected along the axis direction. The flange portion 170 of the one-side frame portion 93A is formed with a ridge portion 172 protruding from the joint surface 171 in a ring shape, and the ridge portion 172 is fitted to the flange portion 173 of the other side frame portion 93B. As described above, a recessed groove 175 is formed so as to be recessed from the joint surface 174 along the circumferential direction. In the joined state, the ridge portion 172 and the recessed groove 175 are fitted together to perform radial positioning.

At the connection separation point between the one-side shaft portion 105A and the other-side shaft portion 105B in the power transmission shaft 105, meshing claws 176,177 that are meshed with each other and can rotate in conjunction with each other are formed at the shaft end portions. The meshing claw 176 of the other side shaft portion 105B projects outward from the joint surface 174 of the flange portion 173 of the other side frame portion 93B along the axis direction. On the other hand, the meshing claw 177 of the side shaft portion 105A is inserted inward in the axial center direction from the protruding side end portion of the ridge portion 172. With this configuration, in the one-side split cutting portion 2A that moves significantly with the change in posture, the meshing claw 177 of the one-side shaft portion 105A does not protrude outward, and damage is caused by contact with an external object. I try to avoid.

When the one-side frame portion 93A and the other-side frame portion 93B are connected by bolting the joint surfaces 171 and 174 of the flange portions 170 and 173 to each other, the meshing claw 176 of the one-side shaft portion 105A and the other-side shaft portion are connected. The meshing claw 177 of 105B meshes with the meshing claw 177 to be in an interlocking state. When the flange connection between the one-side frame portion and the other-side frame portion is released, the one-side shaft portion 105A and the other-side shaft portion 105B are separated from each other.

As shown in FIGS. 27 and 28, the raising drive shaft 20 also has the one-sided shaft portion 20A and the other at the division-corresponding points between the one-side split cutting portion 2A and the other-side split cutting portion 2B, similarly to the power transmission shaft 105. It is divided into a side shaft portion 20B. The one-side shaft portion 20A and the other-side shaft portion 20B are freely connected and separated via a transmission cylinder 20C having a hexagonal cross-section that is externally fitted and mounted over them. The transmission cylinder 2C is externally fitted and supported so as to be slidable along the axis direction. In the stored state, the transmission cylinder 20C is removed from either the left or right shaft portion 20A or 20B, and in the normal use state, the transmission cylinder 20C is slid in the axial direction to the left and right shaft portions. Switch to the interlocking state that fits both 20A and 20B, and fix the position in the axial core direction with the retaining pin 20D.

Therefore, when the one-side split cutting unit 2A switches from the normal use state to the retracted state, the power transmission shaft 105 and the raising drive shaft 20 can be separated from each other. When switching from the retracted state to the normal use state, the power transmission shaft 105 is switched to the interlocking state by the meshing clutch 105C in which the separated left shaft portion 105A and the other side shaft portion 105B come close to each other. The raising drive shaft 20 can be switched to the interlocking state by the transmission cylinder 151.

[Guide mechanism]
A guide mechanism 160 is provided to guide the one-side shaft portion 105A and the other-side shaft portion 105B of the power transmission shaft 105 to a proper connection state when the one-side split cutting portion 2A switches from the stored state to the normal use state. There is. The guide mechanism 160 is provided on the rear side of the machine body of the raising device 11 and on the rear side of the machine body of the cutting device 12. Specifically, the guide mechanism 160 is provided at a connection point between the one-side frame body 95A and the other-side frame body 95B of the intermediate portion horizontal frame 95.

Therefore, since the guide mechanism 160 is located at a position away from the axis X of the one-sided split cutting portion 2A, the guide mechanism 160 is guided while drawing a gentle arcuate locus when demonstrating the guide function with rotation. It is possible to guide smoothly without difficulty.

As shown in FIGS. 25 and 26, the guide mechanism 160 includes a cylindrical boss member 161 as a tubular member provided on the other side frame body 95B and a positioning pin as a shaft member provided on the one side frame body 95A. It is provided with 162, and is configured to guide the positioning pin 162 by fitting it into the boss member 161 when switching from the stored state to the normal use state. The positioning pin 162 is integrally connected to the front side surface of the one-side frame body 95A by welding. The positioning pin 162 is in the tangential direction of the arcuate locus centered on the axis X (see FIG. 5) of the support pin 126 as the rotation support shaft in the connected state fitted to the boss member 161, that is, in the width direction of the machine body. The positioning pin 162 is provided so as to extend along the alignment pin 162.

As shown in FIG. 25, the positioning pin 162 is made of a round bar member, and is provided so as to project from the end face corresponding to the connection point in the one-side frame body 95A toward the other-side frame body 95B. Further, the protruding side end portion 162a is formed on a tapered tapered surface so that the diameter becomes smaller toward the tip side. On the other hand, the boss member 161 is formed in a cylindrical shape, is integrally connected to the front side surface of the other side frame body 95B, and is provided so as to be positioned on the same axis as the axis of the positioning pin 162 in the connected state. ing.

The dimensions of the outer diameter of the large diameter portion 162b of the positioning pin 162 and the inner diameter of the boss member 161 are set so as to fit each other with less rattling. When the positioning pin 162 is fitted into the boss member 161 even if the positioning pin 162 and the boss member 161 are slightly displaced in the radial direction due to the looseness of the machine, the protruding side end portion 162a The tapered surface comes into contact with the boss member 161 and is gradually guided so that the large diameter portion 162b of the positioning pin 162 and the boss member 161 are fitted to each other. When the large diameter portion 162b of the positioning pin 162 and the boss member 161 are fitted to each other, the one side shaft portion 105A and the other side shaft portion 105B of the power transmission shaft 105 are set to be in a proper connection state. As a result, when the one-side shaft portion 105A and the other-side shaft portion 105B approach each other and are switched to the interlocking state by the meshing clutch 105C, the one-side shaft portion 105A and the other-side shaft portion 105B have a substantially rotational shaft core. It is possible to obtain a consistently good rotational drive state.

Due to the guiding action of the guide mechanism 160, the one-side split cutting portion 2A is aligned in an appropriate state and switched to the normal use state, and the one-side frame body 95A and the other-side frame body 95B are integrally connected. Will be done. As shown in FIGS. 25 and 26, a connecting plate 163 is welded and fixed to the lower surface side of the one-side frame body 95A, and the connecting plate 163 is extended so as to project along the lower side of the other-side frame body 95B. There is. Two insertion holes 164 that are inserted in the vertical direction are formed in the extending portion of the connecting plate 163. Further, a tubular body 165 is welded and fixed to the other side frame body 95B in a state of penetrating in the vertical direction. Two bolts 166 are attached from the lower surface side of the connecting plate 163 through the insertion hole 164 and the inside of the tubular body 165, and tightened with a nut 167 from the upper side of the tubular body 165 to fix the frame body 95A on one side. The other side frame body 95B is integrally connected.

[Another Embodiment]
(1) In the above embodiment, the power transmission mechanism 130 is configured to include the endless rotation chain 135 as the endless rotation band, but may be configured to include the endless belt as the endless rotation band. Further, the power transmission mechanism 130 may have a shaft transmission structure including a gear mechanism and a rotation shaft instead of a configuration including an endless rotation band.

(2) In the above embodiment, the power transmission mechanism 130 is provided at the position corresponding to the return path Q2 in the left side merging tip locking transport device 78, but instead of this configuration, the power transmission mechanism 130 is provided on the transport path Q1 side. It may be configured to be.

(3) In the above embodiment, the front side portion of the wrapping prevention cover 140 that covers the power transmission mechanism 130 from the lower side is formed in a substantially L-shaped cross section and is wide open. However, the wrapping prevention cover 140 Is not limited to such a shape, and may be formed into a substantially U-shaped cross section over the entire length in the front-rear direction so as to cover the entire power transmission mechanism 130 in a closed state. Further, the power transmission mechanism 130 may be provided in an open state without providing such a wrapping prevention cover 140.

(4) In the above embodiment, in the eight-row harvesting combine, the one-side split cutting portion 2A on the folding side corresponding to the left two rows in the cutting section 2 and the other other-side split cutting corresponding to the remaining six rows are cut. Although it is configured to be foldable with the portion 2B, the one-side split cutting portion 2A is not limited to two rows, and may be configured with one or three or more rows. Further, a combine may be used in which the cutting portion 2 is integrally provided over the entire row without adopting a split structure.

(5) In the above embodiment, the 8-row combine harvester is shown, but 7-row cutting, 9-row cutting, etc. may be used, and the number of cutting rows is not limited to 8.

The present invention can be applied to a combine equipped with a grain culm transporting device for transporting a harvested grain culm toward the rear of the machine body in a cutting section at the front part of the machine body.

45 Gram culm transfer device 77 Stock source transfer device 77A Stock source side drive wheel 77B Other guide wheel 77C Stock source side endless rotation band 78 Tip transfer device 78A Tip side drive wheel 78B Other guide wheel 78C Tip side endless rotation band 78D transport support (partition member)
130 Power transmission mechanism 131 Drive shaft 132 One side rotating body (relay drive sprocket)
133 Drive shaft 134 Opposite side rotating body (secondary sprocket for relay)
135 Endless rotating body 140 Cover Q1 Transport path Q2 Return path

Claims (4)

A stock root transporting device that sandwiches and transports the stock root side of the harvested culm, a tip transporting device that is provided above the stock root transporting device and locks and transports the tip side of the harvested culm, and the stock root transporting device. It has a power transmission mechanism that is provided between the tip transfer device and transfers power between the stock transfer device and the tip transfer device, and is cut by the stock transfer device and the tip transfer device. Equipped with a grain culm transport device that transports the grain culm toward the rear of the machine.
A stock source side drive wheel to which power is input to the stock source side drive wheel, another guide wheel different from the stock source side drive wheel, and the stock source side drive wheel and the other in the stock source transfer device. It is equipped with an endless rotation band on the stock origin side, which is wound around the guide wheel of the stock.
The tip side drive wheel to which power is input to the tip transfer device, another guide wheel different from the tip side drive wheel, and the tip side drive wheel and the other guide wheel in the tip transfer device. A wound endless rotation band on the tip side is provided,
The stock origin side drive wheel is provided at a position different from the tip side drive wheel in a direction along the rotation axis of the stock origin side drive wheel.
The stock origin transporting device and the tip transporting device are provided side by side in a directional view along the rotation axis of the stockholder side drive wheel.
The power transmission mechanism has one rotating body that rotates around the same axis as the drive shaft that drives the origin side drive wheel, and the other that rotates around the same axis as the drive shaft that drives the tip side drive wheel. The rotating body is provided with an endless rotating band for power transmission wound around the one rotating body and the other rotating body, and power is supplied between the stock origin side drive wheel and the tip side drive wheel. Is configured to convey
Between the tip transfer device and the power transmission mechanism, a partition member that covers the tip side endless rotation band from the lower side and separates the tip transfer device and the power transmission mechanism from above the power transmission mechanism. A combine that is provided in a covered state. The first aspect of the present invention, wherein the power transmission mechanism is provided with a plate-shaped tension applying member that comes into contact with the power transmission endless rotation band and applies tension to the power transmission endless rotation band. combine. In the tip transport device, a transport path for locking and transporting the tip side of the cut grain culm to the movement path of the tip side endless rotation zone, and a transport path for locking and transporting the cut grain culm, and then the start end of the transport path. There is a return route back to the culm,
The combine according to claim 1 or 2, wherein the power transmission mechanism is provided at a position corresponding to the return path in a directional view along the rotation axis. The partition member has a plate shape and rotatably supports the tip-side drive wheel and the other guide wheels in the tip transfer device.
The power transmission mechanism is supported on the lower surface side of the partition member, and is supported.
The combine according to any one of claims 1 to 3, wherein a cover is provided which covers the power transmission mechanism from below while being located between the stock transfer device and the power transmission mechanism.

Images