JP4938586B2 - Combine - Google Patents

Description

  TECHNICAL FIELD The present invention relates to a combine in which a cutting reel is provided with a rotatable rotating reel that scrapes a planted culm into a cutting device.

As the above-described combine, there has been one described in Patent Document 1, for example.
The combine described in Patent Document 1 includes a scraping reel as a rotating reel.
In this type of combine, a rotary reel is provided with tines arranged in the direction of the rotary reel rotation axis, and the planted culm is scraped by locking the planted culm by the tine.
Conventionally, this type of combine has been configured so that all tines arranged in the direction of the rotary reel rotation axis have equal bending strength.

Japanese Patent Laying-Open No. 2005-211044 (paragraphs [0012]-[0014], FIGS. 3 and 4)

In a combine that employs the technology related to the conventional rotating reel described above, there have been cases in which degranulation or insufficient scratching occurs.
That is, on the lateral end side of the rotary reel in the direction of the rotation axis of the rotary reel, the planted culm in the uncut area may get entangled and enter with the culm to be harvested. If the bending strength of the end tine located on the lateral end of the rotating reel is small, the end tine deforms due to the strong reaction force received from the cereal, and the end tine causes a poor scratching of the cereal. There are things to do. For this reason, in order to make it difficult to cause the scratching failure due to the end tine, it is necessary to increase the bending strength of the end tine so that the end tine can be firmly scratched. As a result, the strong bending strength of the inner tine located on the inner side of the rotating reel in the direction of the rotating reel rotation axis increases. The inner tine acts on the harvested culm that is not entangled in the uncut vegetation, and does not receive a strong reaction force like the outer tine, but does not bend due to the reaction force. Will be given to the cereal. As a result, threshing is likely to occur inside the rotary reel depending on the type of cereal.

  An object of the present invention is to provide a combine that can cause cereals to be scraped by a rotating reel in a state where it is difficult to cause shortage or threshing.

The first aspect of the present invention is a combine in which a rotary reel that is driven and rotated to scrape a planted cereal into a reaping device is provided in a reaping portion,
The bending strength of the end tine located on the lateral end side of the rotating reel among the tines positioned side by side in the rotational reel rotation axis direction on the rotating reel is larger than the bending strength of the inner tine positioned on the inner side of the rotating reel. set,
The inner tine is shaped such that the tip side of the inner tine is positioned closer to the outer peripheral side of the rotary reel than the tip side of the end tine .

According to the configuration of the first aspect of the present invention, the end tine that scrapes the planted culm on the lateral end side of the rotating reel has a bending strength greater than that of the inner tine, and thus receives the reaction from the culm. Even if the force is strong, it is hard to be deformed and works hard.
On the other hand, the inner tine that scrapes the planted culm inside the rotating reel has a bending strength that is smaller than that of the end tine, so that it can be easily bent when subjected to a strong reaction force from the cereal. Acts softly into the skin.

  Therefore, the rotary reel can scrape the cereals into the reaping device in a good condition that prevents the occurrence of insufficient squeezing and threshing, and the cereals can flow smoothly and work efficiently, while preventing grain loss. .

According to the configuration of the first aspect of the present invention, even if the rotating reel is lowered so as to act as close to the ground as possible and the inner tine is grounded, the tip side of the inner tine is positioned closer to the outer periphery side of the rotating reel than the tip side of the end tine. Therefore, it is easy to avoid grounding of the end tine. The inner tine has a lower bending strength than the end tine, is likely to undergo elastic deformation due to grounding, and is not easily deformed or damaged.

  Therefore, even when the grounding due to the lowering of the rotating reel occurs, it is possible to obtain a combine with high durability so that the inner tine and the end tine are not easily deformed or damaged by the grounding.

In the second aspect of the invention, the extension length of the end tine from the tine support portion is set shorter than the extension length of the inner tine from the tine support portion.

According to the configuration of the second aspect of the invention, even if the rotary reel is lowered so as to act as close to the ground as possible and the inner tine contacts the ground, the extension length of the end tine from the tine support is longer than that of the inner tine. Because it is short, it is easy to avoid grounding of the end tine. The inner tine has a lower bending strength than the end tine, is likely to undergo elastic deformation due to grounding, and is not easily deformed or damaged.

Therefore, even when the grounding due to the lowering of the rotating reel occurs, it is possible to obtain a combine with high durability so that the inner tine and the end tine are not easily deformed or damaged by the grounding.
The third aspect of the present invention is a combine in which a rotary reel that is driven and rotated to scrape a planted cereal into a reaping device is provided in a reaping portion,
The bending strength of the end tine located on the lateral end side of the rotating reel among the tines positioned side by side in the rotational reel rotation axis direction on the rotating reel is larger than the bending strength of the inner tine positioned on the inner side of the rotating reel. Set,
The extension length of the end tine from the tine support portion is set shorter than the extension length of the inner tine from the tine support portion.
In this 4th invention, the said end side tine and the said inner side tine are comprised by the round bar material, and the outer diameter of the said end side tine is set larger than the outer diameter of the said inner side tine.
In the fifth aspect of the present invention, two adjacent ones of the plurality of the inner tines arranged side by side in the direction of the rotation axis of the rotary reel are provided with inner tines at both ends, and the intermediate portion is connected to the tine support portion. It is comprised by the one bar material bent and formed so that a part may be provided.

In the sixth invention, an inner tine group having a plurality of inner tines supported by one tine support part of a pair of tine support parts located adjacent to each other in the rotation reel rotation direction of the rotary reel, and the other The inner tine group having a plurality of the inner tines supported by the tine support part is arranged so as to be displaced in the direction of the rotation axis of the rotary reel.

According to the configuration of the sixth aspect of the invention, the inner tine attachment interval in each tine support portion is increased, the number of inner tines provided in the rotating reel is reduced, and the number of inner tines can be obtained at a low cost. The reeling of the cereal with the reel can be performed with high accuracy.

That is, the inner tines in one tine support part and the inner tines in the other tine support part are arranged in the circumferential direction of the rotary reel. As a result, the distance between the inner tines in each tine support portion is increased to reduce the number of inner tines provided in each tine support portion, and as a result, the inner tines of certain tine support portions that have come under the rotating reels. Even if there is a situation where there is a planted culm that is not locked by the inner tine located at this tine support, this planted culm is positioned at the next tine support Received by the inner tine, it is scraped into the reaping device.
In the seventh aspect of the present invention, the end tine is disposed on one end side of one tine support portion and the other end side of the other tine support portion of a pair of tine support portions positioned adjacent to each other in the rotation reel rotation direction of the rotation reel. One end is supported, and two end tines are arranged side by side in the direction of the rotation axis of the rotary reel on the other end side of one tine support portion and one end side of the other tine support portion of the pair of tine support portions. It is.

Embodiments of the present invention will be described below with reference to the drawings.
FIG. 1 is a left side view of an entire combine according to an embodiment of the present invention. FIG. 2 is a right side view of the entire combine according to the embodiment of the present invention. FIG. 3 is a plan view of the entire combine according to the embodiment of the present invention. As shown in these drawings, a combine according to an embodiment of the present invention is a traveling machine body that has a driving unit 2 that is self-propelled by a pair of left and right crawler type traveling devices 1 and 1 and that is equipped with a driving seat 2a. The threshing machine 4 provided on the rear side of the machine body frame 3 of the traveling machine body, the grain bagging unit 10 equipped with the bagging tank 11 provided on the side of the threshing machine 4, and the threshing machine 4 A cutting portion 20 having a feeder 21 connected to the front portion is provided.

This combine harvests rice and wheat.
That is, the cutting unit 20 includes the feeder 21, a cutting frame 22 connected to the front end of the feeder 21, a divider 23 provided on both sides of the front end of the cutting frame 22, and the cutting frame. 22 is a clipper-shaped cutting device 24 disposed at the front end of the platform portion 22a so as to be driven, and the cutting frame 22 near the rear of the cutting device 24 and on the upper surface side of the platform portion 22a. An auger 25 that is disposed and rotatably driven, and a rotary reel 27 that is rotatably supported by a pair of left and right support arms 26 and 26 that extend forward from the upper part of the base end side of the cutting frame 22. And is configured.

  The reaping unit 20 is configured such that the platform portion 22a of the reaping frame 22 is close to the ground when the feeder 21 is swung up and down with respect to the threshing machine 4 around a lifting shaft core P facing the body by a hydraulic cylinder 28. Are moved up and down to a lowered working state and the raised non-working state in which the cutting frame 22 is raised from the ground. When the cutting unit 20 is in the descending work state and the traveling machine body is driven, the cutting unit 20 performs the cutting process of the planted cereal cocoon and the supply of the chopped cereal meal to the threshing machine 4.

  That is, the cutting device is divided into a cutting target and a non-cutting target by the pair of left and right dividers 23, 23, and this cutting device is raked into the cutting device 24 by the rotary reel 27. Reap by 24. The harvested cereals are laterally fed forward of the feeder 21 along the platform portion 22a by the spiral plates 25a positioned at both ends of the auger 25. The harvested cereal culm that reaches the front of the feeder 21 is fed into the entrance of the feeder 21 located on the rear side of the auger 25 by scraping the transport arm 25b provided in the middle of the auger 25 so as to be integrally rotatable. The harvested cereals that have entered the feeder 21 are conveyed backward in the feeder 21 by the conveyor 29 located in the feeder 21. The whole of the harvested cereal culm that reaches the rear end of the feeder 21 from the stock to the tip is put into the handling room (not shown) of the threshing machine 4 by the scraping action of the conveyor 29.

As shown in FIG. 13, the tip 25c of each helical plate 25a of the auger 25 is constituted by a steel wire welded to the helical plate 25a.
That is, when wear occurs at the tip 25c of the spiral plate 25a, it can be repaired by replacing only the tip 25c by attaching a new steel wire instead of the worn steel wire.

  The threshing machine 4 performs a threshing process by a handling cylinder (not shown) that rotates the harvested cereal straws that are put into the handling room.

  As shown in FIG. 2, the grain bagging unit 10 includes the bagging tank 11, and bags the upper end side of the grain bag mounted on the discharge cylinder 12 positioned at the lower part of the bagging tank 11. A bag support portion is provided which is supported by a support basket 13 and supports the lower end side of the grain bag by a bag receiving deck 14.

  The bag filling tank 11 is supplied with and stores the threshing grains from the sorting unit (not shown) of the threshing machine 4 by the cerealing device 15 (see FIG. 2). Drain into the bag.

  As shown in FIGS. 2 and 3, the grain bag filling unit 10 includes a pair of front and rear work auxiliary tools 16 and 16. Each work auxiliary tool 16 is positioned in a downward use posture protruding from the bag support portion laterally outward as shown by a solid line in FIGS. 2 and 3 and above the bagging tank 11 as shown by a two-dot chain line in FIG. It is supported so as to be able to swing and switch to the raised storage posture. Each work auxiliary tool 16 is positioned at a height at which the height H from the upper surface of the bag receiving deck 14 is 1.0 to 1.1 m by switching to the lowered use posture. An operator who has boarded for bagging work can be used as a waist rest member.

  As shown in FIGS. 14, 15, and 16, the driver's seat 2a is provided at a pair of left and right attachment members 30 and 30 provided on the lower surface side of the driver seat 2a and at a front end portion of the pair of left and right attachment members 30 and 30. The support shaft 33 is supported by the seat support 33 via the connecting shaft 31 and the support member 32 that rotatably supports both end portions 31a of the connecting shaft 31 by the support piece 32a. The seat support 33 is an engine bonnet that covers the engine 5. Each attachment member 30 is supported on the upper surface of the seat support 33 via a cushion rubber 34 attached to the rear end portion of the attachment member 30 and a cushion rubber 34 attached to the connecting shaft attachment member 30a.

  The seat support 33 includes a seat fixing mechanism 36 equipped with a seat fixing body 35 provided on the upper surface side of the seat support 33. The seat fixing mechanism 36 includes the seat fixing body 35 and a lock pin 37 that is detachable from the seat fixing body 35. In the seat fixing mechanism 36, the lock pin 37 is mounted on the pair of left and right vertical pieces 35 a, 35 a of the seat fixing body 35, so that the lock pin 37 acts on the rear end portion of the attachment member 30 from above. Thus, ascending and swinging around the axial center of the end portion 31a of the connecting shaft 31 of the attachment member 30 is prevented, and thereby the seat is locked so that the driver's seat 2a is fixed in the lowered use posture.

  That is, the driver seat 2a is lifted and swung with respect to the seat support base 33 by removing the lock pin 37 from the seat fixing body 35 and releasing the fixation of the driver seat 2a by the seat fixing mechanism 36. It is possible to switch to a lift-up posture for maintenance with the upper side of 33 open.

Next, the rotary reel 27 will be described.
FIG. 5 is a side view of the rotary reel 27. FIG. 6 is a plan view of the rotary reel 27. FIG. 7 is a front view of one end of the rotary reel 27. FIG. 8 is a front view of the rotary reel 27 on the other end side. As shown in these drawings, the rotary reel 27 is configured to freely rotate integrally with a drive shaft 40 rotatably supported at the tip ends of the pair of support arms 26 and 26 and left and right end portions of the drive shaft 40. A circular frame provided with a pentagonal reel frame 41 and a pair of left and right reel frames 41, 41 arranged circumferentially on the rotary reel 27 and positioned at the five tops of the reel frame 41 in a side view. And a tine support portion 42 made of a pipe material.

  Each reel frame 41 is wound over a sheet metal reel frame body 41b having five arms 41a, a resin block body 43 provided at the tip of each arm 41a, and the five block bodies 43. And an annular belt member 44 connected to the arm 41a with a fastening bolt with the block body 43. Each of the block bodies 43 constitutes an attachment portion for rotatably attaching the tine support portion 42. The annular band plate 44 is constituted by a divided band plate material divided at each arm 41a.

  The rotary reel 27 includes tines 45 and 46 that are arranged side by side in the direction of a rotary reel rotation axis X (hereinafter abbreviated as reel rotation axis X) of the drive shaft 40 on each tine support portion 42, And a tine holding mechanism 60 having a pentagonal auxiliary rotating body 61 in a side view of the traveling machine body provided on one lateral outer side of the reel 27.

  The rotary reel 27 is configured such that the pair of support arms 26, 26 are connected to the cutting frame 22 around the axis Y of the connecting shaft 51 by a hydraulic cylinder 50 connected to one of the pair of support arms 26, 26 and the cutting frame 22. By being swung up and down, it is moved up and down between a lowered working state and a raised non-working state.

FIG. 9 is a side view of the rotary reel 27 in the lowering operation state on the low position side. As shown in this figure, when the pair of left and right support arms 26 are lowered, and the lower end side of the rotary reel 27 is positioned near the ground G, the rotary reel 27 enters the lower position operation state. Then, the rotation reel 27 is rotated around the reel rotation axis X by the rotation of the drive shaft 40, and the tines 45 and 46 of each tine support portion 42 are rotated in the rotation direction A around the reel rotation axis X. The tines 45 and 46 rotate while maintaining a posture extending downward from the tine support portion 42 by the action of the tine holding mechanism 60, and the tips 45 a and 46 a of the tines 45 and 46 are the tips of the divider 23. It moves behind 23a at a ground height lower than the ground height H1 of the tip 23a of the divider 23, and moves at a ground height lower than the ground height H2 at the tip of the cutting device 24 ahead of the cutting device 24. A rotation trajectory T is drawn.

  As a result, even if the planted culm is deeply slapped or the planted culm that is not affected by the divider 23 is generated, the rotary reel 27 accurately converts the tines 45 and 46 into the planted culm. The planted cereal meal is fed into the reaping device 24 by being locked.

FIG. 10 is a side view of the rotating reel 27 in the lowering operation state on the high position side. As shown in this figure, when the pair of left and right support arms 26 and 26 are lowered, and the lower end side of the rotary reel 27 is located slightly away from the ground G, the rotary reel 27 enters a lower position operation state on the high position side. Then, the rotation reel 27 is rotated around the reel rotation axis X by the rotation of the drive shaft 40, and the tines 45 and 46 of each tine support portion 42 are rotated in the rotation direction A around the reel rotation axis X. The tines 45 and 46 rotate while maintaining a posture extending downward from the tine support portion 42 by the action of the tine holding mechanism 60, and the tips 45 a and 46 a of the tines 45 and 46 are the tips of the divider 23. A rotational trajectory T1 that moves behind 23a at a ground height higher than the ground height H1 of the tip 23a of the divider 23 is drawn.

  As a result, in the descending work state on the high position side, the rotary reel 27 scrapes and supplies the planted culm to the reaping device 24 while avoiding the grounding of each of the tines 45 and 46 regardless of the forward / backward inclination of the traveling machine body. .

  As shown in FIG. 11, in the reel rotation axis X, the straight line S passing through the reel rotation axis X and the cutting device 24 in the lowered operation state of the rotation reel 27 becomes a vertical line with respect to the upper surface of the cutting blade of the cutting device 24. Even if the extending angle of the tines 45, 46 from the tine support portion 42 is changed, the culm to the reaping device 24 while preventing the cereal from being lifted from the reaping device 24 is prevented. Supply.

  That is, tines 45 and 46 indicated by solid lines in FIG. 11 indicate tines supported by the tine support portion 42 at a standard extension angle. The tines 45 and 46 indicated by dotted lines in FIG. 11 indicate tines supported in a posture inclined more backward than the posture at the standard extension angle. The tines 45 and 46 indicated by the two-dot chain line in FIG. 11 indicate tines supported in a posture inclined more forward than the posture at the standard extension angle. As shown in these figures, even if the extension angle of the tines 45 and 46 from the tine support portion 42 is changed, the tines 45 and 46 remain in a state in which the distance between the tine tip and the reaping device 24 does not change significantly. Move above 24.

  Of the plurality of tines 45 and 46 supported by the tine support portions 42, the tine 46 positioned on the lateral end side of the left and right rotating reels is defined as an end tine 46, and the tine 45 positioned on the inner side of the rotating reel is defined as an inner tine. 45. The end tines 46 and the inner tines 45 of the tine support portions 42 are constituted by solid iron round bars extending from the tine support portions 42. As shown in FIGS. 6 and 7, each of the two inner tines 46 of each tine support portion 42 is bent so as to have the inner tine 45 at both ends and a connecting portion 47 to the tine support portion 42 at the intermediate portion. It is composed of a single round bar.

  The end tine 46 has an outer diameter larger than that of the inner tine 45 so that the bending strength of each end tine 46 of each tine support portion 42 is larger than the bending strength of each inner tine 45.

That is, on the lateral end side of the rotary reel 27, the planted cereal of the uncut area is entangled, and the planted cereal that is applied to the end tine 46 may be scraped. For this reason, the end side tine 46 is locked to the planted culm without being bent even if a strong reaction force is applied from the cereal, and firmly scrapes the cereal into the reaping device 24.
On the other hand, inside the rotary reel 27, it is only necessary to scrape the planted cereals that are not entangled with the unmilled planted cereal and have a small reaction force applied to the inner tine 45. For this reason, the inner tine 45 bends relatively easily by the reaction force from the planted culm and is locked to the planted culm, and gently scrapes the culm into the reaping device 24.

As shown in FIG. 5, each inner tine 45 of each tine support portion 42 is formed in a curved state in which the distal end side of the inner tine 45 is positioned closer to the outer peripheral side of the rotary reel than the distal end side of the end tine 46.
That is, when the reels 27 are grounded at the end side tine 46, the end side tines 46, since it has a large bending strength than the inner tines 45, deformation and susceptible to breakage. However, even if a grounding situation occurs in the rotary reel 27, the inner tine 45 is grounded and the end tine 46 is not grounded, and the inner tine 45 is easily elastically deformed due to a small bending strength, and the end tine 46 However, because of non-grounding, plastic deformation and breakage are not caused, and plastic deformation and breakage hardly occur in the inner tine 45 and the end tine 46.

  As shown in FIG. 5, the five tine support portions 42 are respectively a first tine support portion 42A, a second tine support portion 42B, a third tine support portion 42C, a fourth tine support portion 42D, and a fifth tine support portion. 42E. A pair of tine support portions 42, 42 excluding the pair of tine support portions 42, 42 formed by the first tine support portion 42A and the fifth tine support portion 42E adjacent in the rotating reel rotation direction, that is, the first tine support portion 42A and the first tine support portion 42A. A pair of tine support portions 42, 42 composed of a two tine support portion 42B, a pair of tine support portions 42, 42 composed of a second tine support portion 42B and a third tine support portion 42C, and a third tine support portion 42C. And a pair of tine support portions 42, 42 composed of a fourth tine support portion 42D and a pair of tine support portions 42, 42 composed of a fourth tine support portion 42D and a fifth tine support portion 42E in FIG. As shown, an inner tine group having a plurality of inner tines 45 supported by one tine support part 42 and an inner side having a plurality of inner tines 45 supported by the other tine support part 42. The in-group is a distance corresponding to about 1/2 of the mounting interval D1 in the reel rotation axis direction of the inner tine 45 in the inner tine group of each tine support portion 42 (hereinafter referred to as the inner tine mounting interval D1). D2 is displaced in the reel rotation axis direction.

  That is, a pair of tine support portions 42, 42 composed of a first tine support portion 42A and a second tine support portion 42B, and a pair of tine support portions 42 composed of a second tine support portion 42B and a third tine support portion 42C. , 42, a pair of tine supports 42, 42 comprising a third tine support 42C and a fourth tine support 42D, and a pair of tine supports comprising a fourth tine support 42D and a fifth tine support 42E. In the portions 42, 42, the inner tine 45 in one tine support portion 42 and the inner tine 45 in the other tine support portion 42 are aligned in the circumferential direction of the rotary reel. As a result, the rotating reel 27 is located between the inner tines 45 of the tine support portion 42 that has come below the rotating reel 27 and there may be planted cereals that are not locked by the inner tine 45. Even if it exists, the inside tine 45 of the tine support part 42 that has come next is scraped into the reaping device 24 of the cultivated culm in a state where the tine 45 is locked to the cultivated culm.

  As shown in FIGS. 7 and 8, the rotary reel 27 includes a tine cover 53 attached to each tine support portion 42. As shown in FIG. 12, each tine cover 53 covers the connecting portion 47 of the inner tine 45 so as not to get entangled with straw scraps and the like. Each tine cover 53 is formed of a resin cylinder having a slit 54 extending over its entire length, and is elastically deformed so that the slit 54 is opened, and is attached to and detached from the tine support portion 42 through the opened slit 54.

  FIG. 5 shows the structure of the tine holding mechanism 60 in a side view. FIG. 7 shows the structure of the tine holding mechanism 60 in a front view. As shown in these drawings, the tine holding mechanism 60 includes the auxiliary rotating body 61, a circular support body 62 in a side view of the rotating reel supported by the boss portion 26a of the support arm 26, and the auxiliary rotating body. A link 63 is provided so as to correspond to each of the tine support portions 42 across the body 61 and the reel frame 41.

  The support body 62 is externally fitted to the boss portion 26a through a mounting hole 62a, and is fixed to a support plate 64 connected to the boss portion 26a by a set bolt 65. The support body 62 includes three support rollers 66 that are configured to engage with the circular mounting holes 61a of the auxiliary rotator 61 and are distributed on the periphery of the support body 62. The auxiliary rotator 61 includes: The support body 62 is pivotally supported via the three rollers 66, and rotates around an axis Z that is located at a center portion of the support 62 and is offset from the reel rotation axis X. The ends of the links 63 on the reel frame side are coupled to the corresponding rotation support shafts 42a of the tine support portions 42 so as to be integrally rotatable. The end of each link 63 on the auxiliary rotating body side is rotatably connected to the top of the auxiliary rotating body 61.

  Accordingly, the tine holding mechanism 60 rotates around the axis Z different from the reel rotation axis X by the driving force transmitted from the rotation reel 27 via the link 63 to the auxiliary rotation body 61 as the rotation reel 27 rotates. The rotation support shaft 42a of each tine support portion 42 is rotated by the link 63 to rotate each tine support portion 42 with respect to the reel frame 41, and the end tine 46 and the inner tine of each tine support portion 42 are rotated. 45 is operated so as to maintain a posture extending downward from the tine support portion 42 regardless of the rotation of the rotary reel 27.

FIG. 17 is a side view of the rotary reel 27 having the second embodiment structure at the tine arrangement portion.
In the rotary reel 27 having the second embodiment structure, the extension length L1 of the end tine 46 from the tine support portion 42 is set shorter than the extension length L2 of the inner tine 45 from the tine support portion 42. The end tine 46 and the inner tine 45 are provided.

That is, when the reels 27 are grounded at the end side tine 46, the end side tines 46, since it has a large bending strength than the inner tines 45, deformation and susceptible to breakage. However, even if a grounding situation occurs in the rotary reel 27, the tip side of the inner tine 45 is grounded, the end tine 46 is not grounded, and the inner tine 45 is easily elastically deformed due to a small bending strength, and the outer tine 45 Since 46 is not grounded, it does not undergo plastic deformation or breakage, and plastic deformation or breakage hardly occurs in the inner tine 45 and the end tine 46.

[Another Example]
Instead of the inner tine 45 of the above embodiment, the inner tine 45 is molded into an angular bent state so that the tip side of the inner tine 45 is positioned closer to the outer peripheral side of the rotating reel than the tip side of the end tine 46. May be implemented. Also in this case, the object of the present invention can be achieved.

Combine left side view Right side view of the entire combine Overall plan view of combine Side view at the rotary reel arrangement part of the mowing part Side view of rotating reel Top view of rotating reel Front view of one end of the rotating reel Front view on the other side of the rotating reel Side view of the rotating reel at the lower position Side view of the rotating reel at the high position side in descending state Side view of the rotating reel at the lower position Side view of tine support Top view of part of auger Side view of seat support structure Top view of seat support structure Front view of seat support structure Side view at the tine support portion of the rotary reel having the second embodiment structure

20 Mowing unit 24 Mowing device 27 Rotating reel 42 Tine support unit 45 Inner tine 46 end side tine L1 End side tine extension length L2 Inner tine extension length

Claims (7)

A combine that is provided with a cutting reel that has a rotatable rotating reel that drives the planting cereal into the reaping device,
The bending strength of the end tine located on the lateral end side of the rotating reel among the tines positioned side by side in the rotational reel rotation axis direction on the rotating reel is larger than the bending strength of the inner tine positioned on the inner side of the rotating reel. set,
A combine in which the inner tine is shaped such that the tip side of the inner tine is positioned closer to the outer peripheral side of the rotary reel than the tip side of the end tine . The combine according to claim 1 , wherein an extension length of the end tine from the tine support portion is set shorter than an extension length of the inner tine from the tine support portion . A combine that is provided with a cutting reel that has a rotatable rotating reel that drives the planting cereal into the reaping device,
The bending strength of the end tine located on the lateral end side of the rotating reel among the tines positioned side by side in the rotational reel rotation axis direction on the rotating reel is larger than the bending strength of the inner tine positioned on the inner side of the rotating reel. Set,
The extending length of the tine supporting portion of the end tine, set shorter than the extending length of the tine supporting portion of the inner tines tare Turkey Nbain. The end tine and the inner tine are made of a round bar,
The combine according to any one of claims 1 to 3, wherein an outer diameter of the end tine is set larger than an outer diameter of the inner tine . Two adjacent ones of the plurality of inner tines arranged side by side in the direction of the rotation axis of the rotary reel are bent so that both ends are provided with inner tines and intermediate portions are provided with connecting portions to tine support portions. The combine according to any one of claims 1 to 4, wherein the combine is composed of a single bar formed. An inner tine group having a plurality of inner tines supported by one tine support part of a pair of tine support parts positioned adjacent to each other in the rotating reel rotation direction of the rotary reel, and supported by the other tine support part. The combine according to any one of claims 1 to 5, wherein an inner tine group having a plurality of inner tines is arranged so as to be displaced in a rotational reel rotation axis direction. One end side tine is supported on one end side of one tine support portion and the other end side of the other tine support portion of a pair of tine support portions positioned adjacent to each other in the rotation reel rotation direction of the rotary reel, The two end side tines are arranged side by side and supported in the direction of the rotation axis of the rotary reel on the other end side of one tine support portion and one end side of the other tine support portion of the pair of tine support portions. The combine according to any one of 6.

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