JP7034055B2 - Harvester - Google Patents

Description

The present invention relates to a harvester having a reel for scraping planted culms and a cutting device for cutting the scraped planted culms.

The scraping reel is rotationally driven around the reel axis along the width direction. Further, this scraping reel is connected to the center of the pair of left and right side plates and the center of the pair of left and right side plates along the reel shaft core, and drives the pair of left and right side plates, and the outer side of the right side plate. It is provided with an auxiliary reel plate formed in the same shape as the side plate. The reel shaft is supported by the reel support frame. The auxiliary reel plate synchronizes and rotates around the axis eccentric from the axis of rotation of the side plate.

The tine support bars are rotatably supported horizontally over a plurality of locations on the outer periphery of the left and right side plates that are rotationally driven. The free ends of the link portion integrally extended from the tine support bar are pivotally connected to multiple locations on the outer peripheral portion of the auxiliary reel plate, and the tine support bar is relatively side plate in conjunction with the synchronous rotation of the side plate and the auxiliary reel plate. It is configured to rotate in tune in the direction opposite to the direction of rotation. The tine support bar is provided with a plurality of tines. By rotating each tine support bar in the opposite direction in conjunction with the forward rotation of the reel plate, many tines attached to the tine support bar are revolved while maintaining a constant downward posture. It is configured to scrape the planted grain culm by.

The auxiliary reel plate is provided with an opening. A support plate is provided on the reel support frame. Three rollers are provided on the support plate. The auxiliary reel plate rotates with the rotation of the side plate while the roller is in contact with the inner surface of the annular wall of the opening, so that the rotation axis of the auxiliary reel plate is defined at a position eccentric from the rotation axis of the side plate ( For example, see Patent Document 1).

Japanese Unexamined Patent Publication No. 2017-11297

The planted culms in the field include culms that are upright in the field, long-canned crops, and culms that are lying down. Tyne causes a fallen culm and scrapes the culm to guide it to the auger or cutting device behind it. At this time, Tyne could not cope with the culm in various states, and could not properly scrape the culm and guide it to the rear cutting device. That is, the hang angle of the tine includes a hang angle suitable for causing a fallen culm and a hang angle suitable for guiding the planted culm to the rear cutting device. So, for example, if the long can crop planted on the left side of the aircraft's direction of travel is lying down, the conventional tine can properly squeeze the culm even if it can cause the long can crop. In some cases, it could not be guided to the cutting device behind.

In order to solve such a problem, it is an object of the present invention to appropriately scrape the planted culm and guide it to the rear cutting device regardless of the state of the planted culm.

In order to achieve the above object, the harvester according to the embodiment of the present invention is a harvester having a reel for scraping the planted culm in the field and a cutting device for cutting the scraped planted culm. And
The reel includes left and right reel frames that rotate coaxially, a plurality of tine support bars pivotally supported by the reel frame, and a plurality of tines of the same shape supported by the tine support bar. ,
The first attachment, which is fixed to the tine support bar and the tine is supported at a predetermined hanging angle,
It comprises a second attachment that is connected to the first attachment and supports the tine.
The hanging angle of the tine supported by the second attachment is determined by the angle at which the second attachment is connected to the first attachment.
The reels are mixed with the tines that are axially supported so that the hanging angles are different.

With such a configuration, it is possible to efficiently cause and scrape the planted culm that has fallen down by the tines of a certain hanging angle, and to guide the planted culms to an auger, a cutting device, etc. by the tines of different hanging angles. It is also done efficiently. As a result, regardless of the state of the planted culm, the planted culm can be appropriately scraped and guided to the cutting device at the rear, the uncut portion is reduced, and the work efficiency can be improved. Will be.
With such a configuration, it is possible to determine which hanging angle to provide the tine depending on the presence or absence of the second attachment, so that the tine having a mixed hanging angle can be easily provided.

Further, the tines may be provided in a mixed manner on the tin support bars that are axially supported so that the hanging angles are different.

With such a configuration, the effect of causing the planted culm and the effect of scraping and guiding to the rear are uniformly exhibited in the entire scraping reel.

Further, each of the tine support bars may be provided with only the tine that is axially supported so that the hanging angles are the same.

With such a configuration, the effect of inducing planted culms or the effect of scraping and guiding backwards can be efficiently enhanced over the entire cutting width.

It is the whole left side view of the combine. It is the whole plan view of a combine. It is the whole right side view of the combine. It is a side view of a cutting part. It is a side view of a scraping reel. It is an exploded side view of a scraping reel. It is a front view which shows the right end part of a scraping reel. It is a front view which shows the left end part of a scraping reel. It is a top view which shows the structure of a tine. It is a side view which shows the composition of the main part of a tine. It is a schematic diagram explaining the hanging angle of a tine. It is a top view of the cutting device. It is an enlarged plan view of the main part of a cutting device. 13 is a cross-sectional view taken along the line XIV-XIV of FIG. It is a side view which shows the schematic structure of a divider and a weed tube. It is a top view which shows the schematic structure of a divider and a weed tube.

〔overall structure〕
1 and 3 show the entire side surface of a conventional combine harvester, which is an example of the harvester according to the present invention, and FIG. 2 shows the entire plane thereof. In this combine, a threshing device 3 and a grain collecting unit 4 are arranged side by side on a traveling machine 2 provided with a pair of left and right crawler traveling devices 1, and a driving unit 5 is provided in front of the grain collecting unit 4. Has been deployed. A feeder 6 for transporting cut grain culms is connected to the front portion of the threshing device 3 so as to swing up and down around the fulcrum X, and a cutting portion 7 having a cutting width corresponding to the width of the machine body is connected to the front end of the feeder 6. It is connected.

The cutting section 7 has a structure in which a clipper-type cutting device 12 and an auger 13 for laterally feeding the cut crops in the middle of the cutting width are erected over a pair of left and right weed frames 11. Further, the auger 13 is provided with a spiral blade 13a for lateral feeding and a scraping finger 13b for feeding the laterally fed grain culm to the starting end of the feeder 6. The feeder 6 is equipped with a hoisting conveyor 14 in which a transport bar 14b is horizontally connected over the left and right chains 14a that are vertically rotated and wound. Further, in the feeder 6, the grain culm sent by the scraping finger 13b is scraped and transported along the bottom surface of the feeder, and is charged and supplied to the front end of the threshing device 3.

A hydraulic cylinder 15 is erected between the front part of the main frame 8 and the lower part of the feeder 6 in the traveling machine body 2, and the cutting portion 7 swings around the fulcrum X integrally with the feeder 6 by the expansion / contraction operation of the hydraulic cylinder 15. It is designed to be raised and lowered. Above the front part of the cutting portion 7, a scraping reel 16 (corresponding to a reel) for scraping the planted culm backward and pulling it up is provided.

The scraping reel 16 is supported by a support bracket 18 (corresponding to a support frame) at the front of a pair of left and right support arms 17 that can swing up and down around a fulcrum a, and the support arms 17 are supported by a hydraulic cylinder 19. By swinging up and down, the scraping action height of the scraping reel 16 can be changed. Further, the scraping reel 16 can slide the support bracket 18 along the support arm 17 to adjust the scraping action position back and forth. The support bracket 18 is manually slid and moved so as to be pin-connected at a plurality of positions in the front-rear direction.

[Scraping reel]
Next, the detailed structure of the scraping reel 16 will be described with reference to FIGS. 4 to 8.

The scraping reel 16 includes a rotary shaft 22 horizontally supported on the left and right support brackets 18, a regular pentagonal reel frame 23 (corresponding to a reel frame) connected and fixed to the left and right of the rotary shaft 22, and left and right reels. Five tine support bars 24 rotatably horizontally supported at five tops of the frame 23, a large number of tines 25 mounted in parallel on each tine support bar 24 at a constant pitch, and a reel shaft core P of the reel frame 23. It is composed of a regular pentagonal auxiliary reel frame 26 (corresponding to an auxiliary reel frame) rotatably supported around an eccentric shaft core Q that is displaced rearward by a set distance L.

As shown in FIG. 6, the reel frame 23 is erected over a disk-shaped central hub 23a, five arm portions 23b radially extending from the central hub 23a, and the tips of the arm portions 23b. It is composed of a reinforcing rod 23c. The auxiliary reel frame 26 also includes a disk-shaped central hub 26a, five arm portions 26b radially extending from the central hub 26a, and a reinforcing rod 26c erected over the tips of the arm portions 26b. The reel frame 23 and the auxiliary reel frame 26 have the same shape.

As shown in FIG. 7, a disk-shaped support plate 27 is connected and fixed to the inside of the body of the support bracket 18, and an eccentric shaft core Q is equidistant on the inner surface near the outer circumference of the support plate 27. Three guide rollers 28 are equipped at the distance position. On the other hand, the central hub 26a of the auxiliary reel frame 26 is formed with a circular hole 29 having a diameter circumscribing to the guide roller 28 group, and the circular hole 29 is guided by the guide roller 28 group to guide the auxiliary reel frame 26. Is rotatably supported around the eccentric shaft core Q. That is, when the auxiliary reel frame 26 rotates, the guide roller 28 group regulates the rotation of the auxiliary reel frame 26 so that the auxiliary reel frame 26 rotates about the eccentric shaft core Q via the circular hole 29. This defines the position of the eccentric shaft core Q.

As shown in FIG. 5, a link portion 30 is integrally projected rearward from both ends of each tine support bar 24, and the free end of the link portion 30 is pivotally connected to each top of the auxiliary reel frame 26. The distance from the shaft core R of each tine support bar 24 to the free end pivot point S of the link portion 30 coincides with the set distance L from the reel shaft core P to the eccentric shaft core Q. Further, the direction of the virtual line connecting the axis R and the free end fulcrum S coincides with the direction of the virtual line connecting the reel axis P and the eccentric axis Q. As a result, the reel shaft core P, the eccentric shaft core Q, the shaft core R of the tine support bar 24, and the free end pivot fulcrum S of the link portion 30 form the fulcrum of the parallel quadruple link. Therefore, when the reel frame 23 is rotated around the reel shaft core P, the auxiliary reel frame 26 rotates around the eccentric shaft core Q following this, so that the tine support bar 24 revolves around the reel shaft core P. At the same time, the tine support bar 24 is tuned and rotated in the opposite direction around the axis R so that the tine support bar 24 is always maintained in a constant rotational posture.

[Tyne]
Although only one type of tine 25 is shown in FIGS. 4 to 8, a plurality of types of tine 25 having different hanging angles are provided on the scraping reel 16. For example, as shown in FIGS. 9 to 11, the scraping reel 16 is provided with a mixture of tines 25 provided at different hanging angles. Hereinafter, a configuration in which the tines 25 provided at different hanging angles are mixed will be described with reference to FIGS. 9 and 10.

The tine support bar 24 is integrally connected to the link portion 30 connected to the auxiliary reel frame 26, and a plurality of tines 25 are connected. The tine 25 includes a tine 25a and a tine 25b having a different hanging angle from the tine 25a. The tine support bar 24 is pivotally supported over the left and right reel frames 23 and the reel frame 23 provided between the left and right reel frames 23. The tine support bar 24 is provided with a bracket 31 extending in the axial direction of the tine support bar 24 between the reel frames 23. Since the bracket 31 is provided between the reel frames 23, when three reel frames 23 are provided, two brackets 31 are provided for each tine support bar 24.

The tine 25a is supported by the bracket 31. The bracket 31 has a U-shaped cross section, and the tine 25a is supported on the inner surface of the bracket 31 by bolts 35a. The tine 25b is supported by a bolt 35b on a bracket 32 provided on the bracket 31.
The bracket 31 is directly supported by the tine 25a and is provided with a notch 31a at a position where the tine 25b is supported. The bracket 32 has an L-shaped cross section and is supported by the tine support bar 24 at the notch 31a of the bracket 31. For example, the tine 25b is provided in an end region near at least one of the left and right reel frames 23. In the example of FIG. 9, the second tine 25 from the reel frame 23 on the left side is the tine 25b.

The tine 25a protrudes from the notch 31a of the bracket 31, has a straight portion 25as, and has a free end portion that bends. Similarly, the tine 25b protrudes from the opening (not shown) of the bracket 32 and the notch 31a of the bracket 31, includes a straight portion 25bs, and the free end portion bends. By bending the free end portion of the tine 25a and the tine 25b, the planted culm can be accurately guided to the rear auger 13 (see FIG. 2).

Tyne 25a and Tyne 25b have the same shape and size. The surface direction of the mounting surface of the tine 25a of the bracket 31 is different from the surface direction of the mounting surface of the tine 25b of the bracket 32. As a result, as shown in FIGS. 10 and 11, the hanging angle of the tine 25a and the hanging angle of the tine 25b are different.

As shown in FIGS. 9 to 11, the hanging angle of the tine 25 is defined as the intersection angle between the vertical line G corresponding to the gravity direction (vertical direction of the machine body) and the extension line of the straight line portion 25as or the straight line portion 25bs. .. The tine 25a has a hanging angle θ1, and the tine 25b has a hanging angle θ2. The tine 25a and the tine 25b are provided so that the hanging angle θ2 is larger than the hanging angle θ1.

In this way, by mixing the tines 25 having different hanging angles, the efficiency of scraping the planted culm and guiding it to the auger 13 (see FIG. 2), the cutting device 12 (see FIG. 1), etc. is improved, and the uncut portion is left uncut. Is reduced, and it becomes possible to improve work efficiency. For example, by making the hanging angle θ2 of the tine 25b larger than the hanging angle θ1 of the tine 25a, the tine 25a effectively acts to cause and scrape the fallen planted culm. Further, since the tine 25b has a structure extending rearward from the tine 25a, it effectively acts to guide the squeezed planted culm to the auger 13 (see FIG. 2), the cutting device 12 (see FIG. 1), and the like. .. The mixture of tine 25a and tine 25b efficiently causes and scrapes the planted culm that has fallen down, and at the same time, the planted culm is auger 13 (see FIG. 2) and a cutting device 12 (FIG. 2). It is also efficient to lead to (see 1) and the like. As a result, the uncut portion is reduced, and it becomes possible to improve the work efficiency.

[Cutting device]
As shown in FIGS. 12 to 14, the cutting device 12 has an angle-shaped base 34 mounted and fixed back-to-back to a connecting frame 33 extending in the width direction of the machine body, and a receiver mounted on the base 34. The blade 36, the movable blade 37 that is slidably supported with respect to the receiving blade 36, the knife bar 38 that drives the movable blade 37, and the knife that holds the movable blade 37 while allowing sliding to prevent lifting. It is equipped with a clip 39.

The cutting device 12 is configured to reciprocate and drive a long knife bar 38 over the entire cutting width at a predetermined pitch by transmitting power from an engine (not shown) via a drive mechanism. Along with this, the movable blade 37 connected and fixed to the knife bar 38 by the bolt 43 reciprocates, and in cooperation with the receiving blade 36 in the fixed state, the stock of the cut grain culm is cut and cut. Since the movable blade 37 is fixed to the knife bar 38 by the hexagonal bolt 43, the movable blade 37 can be attached and detached simply by attaching and detaching the bolt 43 using a spanner or the like, and the movable blade 37 can be repaired or replaced. Maintenance work becomes easy.

As shown in FIG. 12, the movable blade 37 serves as a member for sending the cut grain culm to the intermediate side portion in the width direction of the machine body (delivery point to the feeder 6), and is in the traveling direction of the machine body with respect to the delivery point to the feeder 6. It includes a right side lateral feed member 40 located on the right side in view and a left side lateral feed member 41 located on the left side.

As shown in FIGS. 12 to 14, the right side feed member 40 is composed of a plate-like body having a sawtooth-shaped lateral feed acting portion 40A and a connecting portion 40B, which are long in the lateral width direction of the machine body and have a sawtooth shape on the upper side. Has been done.
Similarly, the left lateral feed member 41 is composed of a plate-like body in which the lateral feed acting portion 41A, which is long in the lateral width direction of the machine body and has a sawtooth shape on the upper side, and the connecting portion 41B are one. The connecting portion 40B and the connecting portion 41B are connected to the knife bar 38 by bolts 42, and the right side lateral feed member 40 and the left lateral feed member 41 are configured to reciprocate integrally with the knife bar 38 and the movable blade 37. .. When the bolt 42 is disconnected from the knife bar 38, the right lateral feed member 40 and the left lateral feed member 41 can be completely removed from the cutting device 12.

The lateral feed acting portion 40A in the right lateral feed member 40 is set in the direction of the saw blade so as to transport the cut grain culm toward the feeder 6 side, that is, to the left, and the lateral feed acting portion 41A in the left lateral feed member 41. The direction of the saw blade is set so as to transport the cut grain culm toward the feeder 6 side, that is, to the right. Therefore, the right side lateral feed member 40 and the left side lateral feed member 41 reciprocate integrally with the movable blade 37 at a predetermined pitch, so that the cut grain culm is moved to the middle side in the lateral width direction of the machine body, that is, to the feeder 6. It can be sent to the delivery point.

The right side feed member 40 and the left side side feed member 41 are provided in a state of extending to the rear side of the machine body along the cutting device 12, and are connected to the cutting device 12 in an oblique posture located upward toward the rear side. The tilt angle with respect to the cutting device 12 is set to be loose (about 10 degrees) so as not to interfere with the transportation of the cut grain culm. Moreover, it is extended to the rear of the machine body longer than the rear end position of the base 34, and the function of sending out the cut grain culm is enhanced.

As described above, the right lateral feed member 40 and the left lateral feed member 41 can be removed from the cutting device 12 when the bolt 42 is disconnected from the knife bar 38. Then, when performing maintenance work such as repair and replacement of the movable blade 37, when the connection with the drive mechanism is released and the right side lateral feed member 40 and the left lateral feed member 41 are removed, the movable blade 37 and the knife bar 38 are formed. Can be pulled out toward the outside on one side in the left-right direction while the blades are still connected.

[Divider and weed tube]
The cutting section 7 is provided with a divider 20, a weeding pipe 74 and a weeding pipe 75. The divider 20 is provided so as to project forward (in the direction in which the work travel is performed) at both the left and right end portions of the front portion of the cutting portion 7. The weeding pipe 74 and the weeding pipe 75 are provided on each of the left and right dividers 20.

The right divider 20 is supported by a weeding frame 11 provided on the right side of the cutting section 7. The left divider 20 is supported by a weeding frame 11 provided on the left side of the cutting section 7. Each divider 20 projects forward from the scraping reel 16 of the cutting portion 7. That is, the protruding tip portion of the divider 20 is on the front side of the reel front end line FL (the reel front end line FL is a line in the direction of gravity) in contact with the front end of the scraping reel 16. For example, the protruding tip portion of the divider 20 protrudes horizontally from the front end of the scraping reel 16 by about 20 mm to 150 mm. The divider 20 has a triangular shape when viewed from the side, one side thereof is composed of the upper plate 20a, and the other side is composed of the divider tube 20b. The upper plate 20a is a substantially isosceles triangle with an acute angle at the apex, and inclines upward as it approaches the airframe from the protruding tip portion. The divider tube 20b is connected to the front side portion of the upper plate 20a and is bent at a position where it becomes a protruding tip portion of the divider 20. The divider tube 20b constitutes the bottom portion of the divider 20 and inclines downward toward a distance from the protruding tip portion, and bends inward and upward on the way. In the divider 20 on the right side, the divider tube 20b is provided along the left side of the upper plate 20a in a plan view. In the divider 20 on the left side, the divider tube 20b is provided along the right side of the upper plate 20a in a plan view.

The weed tube 74 is cantilevered by the divider 20 in the vicinity of the protruding tip portion of the divider 20. The weed tube 75 is cantilevered by the divider 20 in the vicinity of a region that is bent inward and upward at the bottom of the divider 20. The weeding tube 74 is arranged above the weeding tube 75 in a side view, and the weeding tube 74 and the weeding tube 75 are arranged between the divider tube 20b and the upper plate 20a. In a plan view, the front part of the weed tube 74 is located inside the divider 20 (on the left side of the right weed tube 74, on the right side of the left weed tube 74), and is approximately along the middle divider 20 at the free end. Protrudes inward.
The weed tube 75 is substantially along with the divider 20 from the front side portion in a plan view, and the free end portion protrudes inward.

The divider 20, the weed pipe 74, and the weed pipe 75 having such a structure weave the planted culm to be worked and the planted culm not to be worked, and the fallen culm of the machine body. Raise inward. The divider 20 weeds the planted culm at the protruding tip portion and erects the laid-down culm inward along the upper plate 20a. The weeding tube 74 weeds the planted culm at the tip portion and guides the planted culm toward the rear side. The weed tube 75 guides the planted culm toward the rear side. As a result, the planted culm to be worked in the field is weeded and erected, and is guided to the scraping reel 16, the auger 13 and the cutting device 12, and is cut in a state where the uncut portion is suppressed.

[Another Embodiment]
(1) In the above embodiment, an arrangement example in which the tine 25b is provided in the end region of the tine support bar 24 is shown. Not limited to this configuration, the arrangement of the tine 25b on the scraping reel 16 is arbitrary. For example, the tine 25b may be arranged together with the end region of the tine support bar 24 or at a position different from the end region. Further, only the tine 25a or the tine 25b may be provided in any of the tine support bars 24 of the scraping reel 16.

(2) In the example of FIG. 9, one reel frame 23 is provided between the left and right reel frames 23, but the reel frame 23 may not be provided between them. In this case, only one bracket 31 may be provided between the left and right reel frames 23. On the contrary, a plurality of reel frames 23 may be provided between the left and right reel frames 23. That is, one bracket 31 may be provided between two adjacent reel frames 23, or a plurality of brackets 31 may be provided between two adjacent reel frames 23.

(3) The tine 25a and the tine 25b may have the same shape and size, but may have different shapes and sizes. The tine 25a is supported by the bracket 31 and the tine 25b is supported by the bracket 32, but the tine 25a and the tine 25b have an arbitrary support configuration as long as the hanging angles are different from each other. Further, the tines 25 are two types of tines 25a and 25b having different hanging angles, but three or more types of tines may be used.
(4) In the above embodiment, five arm portions 23b of the pair of left and right reel frames 23 and five arm portions 26b of the auxiliary reel frame 26 are provided. Along with this, the number of tine support bars 24 is also five. The shapes of the pair of left and right reel frames 23 and the auxiliary reel frame 26 are both pentagonal in side view. However, the present invention is not limited to this. For example, the number of the arm portion 23b, the arm portion 26b, and the tine support bar 24 is 6 or more, respectively, and the shapes of the pair of left and right reel frames 23 and the auxiliary reel frame 26 are all hexagonal or more in side view. It may be rectangular. Further, the number of the arm portion 23b, the arm portion 26b, and the tine support bar 24 is 4 or less, respectively, and the shapes of the pair of left and right reel frames 23 and the auxiliary reel frame 26 are all quadrangular or less in the side view. It may be rectangular.

The present invention is applicable not only to a normal type combine but also to a self-removing type combine. Further, it can be applied to various harvesters such as a corn harvester, a potato harvester, a carrot harvester, and a sugar cane harvester.

12 Cutting device 16 Scraping reel (reel)
23 Reel Frame 24 Tyne Support Bar 25 Tyne 25a Tyne 25b Tyne 31 Bracket 32 Bracket

Claims (3)

A harvester having a reel for scraping the planted culm in the field and a cutting device for cutting the scraped planted culm.
The reel
Left and right reel frames that rotate coaxially,
A plurality of tine support bars pivotally supported on the reel frame so as to be axially rotatable,
With a plurality of tines of the same shape supported by the tine support bar ,
The first attachment, which is fixed to the tine support bar and the tine is supported at a predetermined hanging angle,
It comprises a second attachment that is connected to the first attachment and supports the tine.
The hanging angle of the tine supported by the second attachment is determined by the angle at which the second attachment is connected to the first attachment.
The reel is a harvester in which the tines are axially supported so that the hanging angles are different. The harvester according to claim 1, wherein each of the tine support bars is provided with the tines pivotally supported so as to have different hanging angles. The harvester according to claim 1, wherein each of the tin support bars is provided with only the tin that is axially supported so that the hanging angles are the same.

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