JP6971811B2 - combine - Google Patents

Description

The present invention relates to a combine equipped with a threshing device for threshing a harvested grain culm with a handling cylinder.

As the above-mentioned combine, for example, the combine described in Patent Document 1 is already known. The combine described in Patent Document 1 is provided with a threshing device (“threshing machine” in the document) for threshing a harvested grain culm with a handling cylinder. The handling barrel consists of a handling barrel shaft that extends in the front-rear direction of the machine (“support shaft” in the literature) and a fuselage that is supported by the handling barrel shaft and has multiple handling teeth attached to the outer periphery (“handling drum” in the literature). And have. The fuselage is composed of a single fuselage portion over the entire front and rear of the fuselage.

Japanese Unexamined Patent Publication No. 2010-067852

In the combine described in Patent Document 1, the entire body must be handled integrally when the handling body is assembled, which requires labor. In addition, since the front and rear length of the body portion is long, it is disadvantageous in terms of strength.

In view of the above situation, there is a demand for a combine that has excellent assembleability and has a handling cylinder that is advantageous in terms of strength.

The feature of the present invention is
It is a combine equipped with a threshing device that threshs the harvested culm with a handling barrel.
The handling cylinder has a handling cylinder shaft extending in the front-rear direction and a body supported by the handling cylinder shaft and having a plurality of handling teeth attached to the outer peripheral portion.
The fuselage has a plurality of fuselage portions in which the fuselage is divided back and forth and rotates integrally.
A connecting member for connecting the body portions adjacent to each other in the front-rear direction is provided.
A hole is formed in the body portion into which the base portion of the handling tooth is inserted.
The connecting member does not overlap with the hole and
The connecting member is provided on the inner peripheral surface of the front body portion and the inner peripheral surface of the rear body portion at the boundary between the front body portion and the rear body portion inside the body. a connecting portion that is provided What Wataru,
A plurality of notches into which the base of the tooth is inserted is formed in the connecting portion.
The cutout portion is provided with a front notch portion that opens to the front side in the connecting portion and a rear notch portion that opens to the rear side in the connecting portion.

According to this feature configuration, when assembling the handling body, by handling the body separately in a plurality of body portions, less labor is required than when the entire body is handled integrally. Further, by connecting the front and rear body portions adjacent to each other by a connecting member, it is not necessary to overlap the front and rear body portions, and the outer peripheral surface of the front body portion and the outer peripheral surface of the rear body portion can be separated from each other. It is possible to easily connect the body portions adjacent to each other in the front-rear direction so as to be flush with each other. Moreover, since the connecting member does not overlap with the hole into which the base of the handling tooth is inserted, the base of the handling tooth does not interfere with the connecting member. As a result, it is possible to attach the handling teeth to these body portions in a single step in a state where the body portions adjacent to each other in the front and rear are connected to each other. Further, since the front-rear length of each body portion is shortened, it is advantageous in terms of strength.

That is, according to this feature configuration, it is possible to realize a combine having an excellent assembling property and a handling cylinder which is advantageous in terms of strength.
According to this feature configuration, the connecting portion does not interfere with the base of the handling tooth because the base of the handling tooth enters the notch .

The feature of the present invention is
It is a combine equipped with a threshing device that threshs the harvested culm with a handling barrel.
The handling cylinder has a handling cylinder shaft extending in the front-rear direction and a body supported by the handling cylinder shaft and having a plurality of handling teeth attached to the outer peripheral portion.
The fuselage has a plurality of fuselage portions in which the fuselage is divided back and forth and rotates integrally.
A connecting member for connecting the body portions adjacent to each other in the front-rear direction is provided.
A hole is formed in the body portion into which the base portion of the handling tooth is inserted.
The connecting member does not overlap with the hole and
The connecting member has a connecting portion extending over an inner peripheral surface of the body portion on the front side and an inner peripheral surface of the body portion on the rear side.
A plurality of notches into which the base of the tooth is inserted is formed in the connecting portion.
As the notch, a front notch that opens to the front side in the connecting portion and a rear notch that opens to the rear side in the connecting portion are provided.
The connecting portion is composed of a plate material formed in a substantially ring shape around the rotation axis of the handling cylinder along the inner peripheral surface of the body.
It is preferable that ribs rising from the inner peripheral surface of the connecting portion toward the inside in the radial direction of the body are provided on the entire circumference around the rotation axis on the inner peripheral surface of the connecting portion.

According to this feature configuration, when assembling the handling body, by handling the body separately in a plurality of body portions, less labor is required than when the entire body is handled integrally. Further, by connecting the front and rear body portions adjacent to each other by a connecting member, it is not necessary to overlap the front and rear body portions, and the outer peripheral surface of the front body portion and the outer peripheral surface of the rear body portion can be separated from each other. It is possible to easily connect the body portions adjacent to each other in the front-rear direction so as to be flush with each other. Moreover, since the connecting member does not overlap with the hole into which the base of the handling tooth is inserted, the base of the handling tooth does not interfere with the connecting member. As a result, it is possible to attach the handling teeth to these body portions in a single step in a state where the body portions adjacent to each other in the front and rear are connected to each other. Further, since the front-rear length of each body portion is shortened, it is advantageous in terms of strength.
That is, according to this feature configuration, it is possible to realize a combine having an excellent assembling property and a handling cylinder which is advantageous in terms of strength.
According to this feature configuration, the connecting portion does not interfere with the base of the handling tooth because the base of the handling tooth enters the notch.
According to this feature configuration, at the boundary between the front fuselage and the rear fuselage, the entire circumference around the rotation axis center on these inner peripheral surfaces is supported by the connecting portion, and the connecting portion is the rotating shaft. It will be reinforced by ribs all around the heart. As a result, the front body portion and the rear body portion can be firmly connected.

Further, in the present invention
It is preferable that the height of the rib from the inner peripheral surface of the connecting portion is the same over the entire circumference around the rotation axis.

According to this feature configuration, there is a circular opening centered on the center of rotation on the inner peripheral side of the rib, which is relevant when performing maintenance of the handling cylinder (for example, replacement of the handling tooth). You can easily work by putting your hands inside the body through the opening.

Further, in the present invention
The fuselage is divided back and forth into three or more said fuselage portions.
The connecting member is continuous with the front and rear connecting portions extending from the inner peripheral surface of the front body portion and the inner peripheral surface of the middle body portion among the three continuous front and rear body portions. Of the three body portions, the rear side connecting portion extending over the inner peripheral surface of the body portion on the rear side and the inner peripheral surface of the middle body portion, and the front connecting portion and the rear connecting portion. With a plurality of anterior-posterior facing portions extending in the anterior-posterior direction.
It is preferable that the plurality of front-rear facing portions do not overlap with the holes.

According to this feature configuration, the front connecting portion and the rear connecting portion are connected by a plurality of front-rear facing portions, whereby the structural integrity of the connecting member as a whole can be enhanced. .. Further, since the plurality of front-rear facing portions do not overlap with the holes into which the bases of the handling teeth are inserted, the base portions of the handling teeth do not interfere with the plurality of front-rear facing portions. Thereby, with the front body portion, the middle body portion, and the rear body portion connected to each other, the handling teeth can be attached to these body portions in one step.

Further, in the present invention
The front-rear facing portion is provided over the inner peripheral surface of the front connecting portion and the inner peripheral surface of the rear connecting portion.
It is preferable that the height of the front-rear facing portion from the inner peripheral surface of the connecting portion is the same as the height of the rib from the inner peripheral surface of the connecting portion.

According to this feature configuration, the front-rear facing portion does not protrude from the inner peripheral end of the rib toward the center of rotation, and the inside of the fuselage is put into the inside of the fuselage through the opening on the inner peripheral side of the rib to maintain the handling cylinder (for example, When exchanging teeth, etc.), the front-back facing part does not easily interfere with the work.

Further, in the present invention
It is preferable that the front notch and the rear notch are displaced in the circumferential direction of the fuselage.
Further, in the present invention
It is preferable that a matching mark indicating the correct positional relationship between the body portion and the connecting portion is provided between the body portion and the connecting portion.

According to this feature configuration, the correct combination of the body portion and the connecting portion is clarified by the matching mark, and it is possible to prevent the wrong body portion from being attached to the connecting portion (misassembly).

Further, in the present invention
The body portion is made of a roll-molded plate material.
It is preferable that the roll seams of the plurality of body portions are aligned around the rotation axis of the handling cylinder so that the plurality of body portions are aligned.

According to this feature configuration, the positions of a plurality of body portions around the center of rotation can be aligned by utilizing the roll seam of the body portion.

It is a left side view showing a head-feeding combine. It is a top view which shows the head-feeding combine. It is a left side sectional view which shows the threshing apparatus. It is a left side sectional view which shows the handling cylinder. It is an exploded perspective view which shows the handling cylinder. It is a figure which shows the state which the front side body part and the rear side body part, and the intermediate body part are connected. FIG. 4 is a cross-sectional view taken along the line VII-VII in FIG. It is an exploded perspective view which shows the connecting member. It is a back view which shows the connecting member. 6 is a cross-sectional view taken along the line XX in FIG. It is an exploded development view which shows the fuselage. It is a figure which shows the rear side body part attachment process. It is a figure which shows the front side body part attachment process. It is a figure which shows the intermediate body part attachment process. It is a figure which shows the handling tooth attachment process. It is a developed view which shows the positional relationship between the hole into which the base of the handling tooth is inserted, and a connecting member. It is a figure which shows the intermediate body part attachment process which concerns on another embodiment. It is a figure which shows the connecting part alignment part which concerns on 1st another embodiment. It is a figure which shows the connecting part alignment part which concerns on the 2nd another embodiment.

A mode for carrying out the present invention will be described with reference to the drawings.

[Overall composition of combine harvester]
1 and 2 show a head-feeding combine. This combine includes an airframe frame 1 and a traveling device 2 that supports the airframe frame 1. A driving cabin 3 is provided on the right side of the front part of the aircraft. The driving cabin 3 includes a driving unit 4 on which the driver is boarded and a cabin 5 that covers the driving unit 4. An engine (not shown) is provided below the driving unit 4.

In front of the driving cabin 3, a cutting section 6 for cutting the planted culm is provided. A grain storage tank 7 for storing grains is provided behind the operation cabin 3. A grain discharge device 8 for discharging grains in the grain storage tank 7 is provided. A feed chain 9 for sandwiching and transporting the cut grain culm is provided on the left side of the machine body. A threshing device 10 is provided on the left side of the grain storage tank 7. The threshing device 10 uses the handling cylinder 11 to thresh the harvested culms transported by the feed chain 9. A straw-removing transport device 12 is continuously provided on the rear side of the threshing device 10. The straw discharge transporting device 12 receives the straw discharged after the threshing process from the feed chain 9 and sandwiches and transports it backward.

[Mowing section]
The cutting unit 6 is configured to have a plurality of cutting specifications (for example, six-row cutting specifications). The cutting unit 6 includes a plurality of (for example, seven) weeding tools 13, a plurality of (for example, six) raising devices 14, a cutting device 15, and a transport device 16. The weeding tool 13 weeds the planted culm in the field. The raising device 14 causes a weeded planted culm. The cutting device 15 cuts the raised planted culm. The transport device 16 transports the harvested grain culm backward toward the threshing device 10.

[Threshing device]
As shown in FIG. 3, a handling chamber 17 is formed in the upper part of the threshing device 10. The handling chamber 17 is provided with a handling cylinder 11. The handling cylinder 11 can rotate around the rotation axis Y1 extending in the front-rear direction of the machine body. A receiving net 18 is provided below the handling cylinder 11. A dust exhaust fan 19 for discharging dust to the outside is provided behind the handling chamber 17.

At the bottom of the threshing device 10, a rocking sorting device 20 that swings and sorts the objects to be sorted, a wall insert 21 that blows sorting air to the rocking sorting device 20, and the grain of the first grain (single grain, etc.) The first collection unit 22 for collecting the wall inserts, the second collection unit 23 for collecting the grain of the second product (grains with branch inserts, etc.), and the like are provided.

The first collection unit 22 is provided with the first screw 24 for transporting the grain of the first grain to the right. At the right end of the first screw 24, a grain raising device 25 for frying and transporting the grain of the first grain to the grain storage tank 7 is interlocked and connected.

The second collection unit 23 is provided with a second screw 26 for transporting the grain of the second product to the right. At the right end of the second screw 26, a second reduction device 27 that reduces the grain of the second product to the rocking sorting device 20 is interlocked and connected.

[Handling body]
As shown in FIGS. 3 to 5, the handling cylinder 11 has a substantially cylindrical shape in which the handling cylinder shaft 28 extending in the front-rear direction of the machine body and the handling cylinder shaft 28 are supported and a plurality of handling teeth 29 are attached to the outer peripheral portion. It has a fuselage 30 and. The handling cylinder 11 can rotate around the rotation axis Y1 extending in the front-rear direction of the machine body. The handling cylinder 11 is supported by the front wall 31F and the rear wall 31B in the handling chamber 17 via the handling cylinder shaft 28. The body 30 has a plurality of (for example, three) body portions in which the body 30 is divided back and forth (for example, divided into three). The fuselage 30 is an intermediate fuselage portion located between the front fuselage portion 32 located on the front side, the rear fuselage portion 33 located on the rear side, and the front fuselage portion 32 and the rear fuselage portion 33 as the fuselage portion. 34 and. The front fuselage portion 32, the rear fuselage portion 33, and the intermediate fuselage portion 34 are supported by a single handling barrel portion 28 so that they rotate integrally. The front-rear length L1 of the front body portion 32, the front-rear length L2 of the rear body portion 33, and the front-rear length L3 of the intermediate body portion 34 are substantially equal. That is, the front body portion 32, the rear body portion 33, and the intermediate body portion 34 have substantially the same length in the front-rear direction.

The handling barrel shaft 28 is rotatably supported by the front wall 31F via the front bearing 35, and is rotatably supported by the rear wall 31B via the rear bearing 36. An input pulley 37 into which the driving force from the engine is input is provided at a portion of the handling barrel shaft 28 that protrudes forward from the front wall 31F.

[Front fuselage]
The front body portion 32 is composed of a substantially cylindrical plate material (roll-molded plate material). The front body portion 32 is formed with a hole 32a into which the base portion (bolt 29a) of the handling tooth 29 is inserted. A front plate member 38 that closes the front end opening is bolted to the front end opening edge of the front body portion 32. The front boss 39 is fixed to the rear surface of the front plate member 38 (the surface on the inner side of the body 30) by bolts 40. The front boss 39 is fixed to the handling barrel shaft 28 by bolts 41. The front plate member 38 is supported by the handling barrel shaft 28 via the front boss 39 so as to be able to rotate constantly with the handling barrel shaft 28.

[Rear fuselage]
The rear body portion 33 is composed of a substantially cylindrical plate material (roll-molded plate material). The rear body portion 33 is formed with a hole 33a into which the base portion (bolt 29a) of the handling tooth 29 is inserted. A rear plate member 42 that closes the rear end opening is bolted to the rear end opening edge of the rear fuselage portion 33. A rear boss 43 is fixed to the front surface of the rear plate 42 (the inner surface of the fuselage 30) by bolts 44. The rear boss 43 is fixed to the handling barrel shaft 28 by bolts 45. The rear plate material 42 is supported by the handling barrel shaft 28 via the rear boss 43 so as to be integrally rotatable with the handling barrel shaft 28.

[Intermediate fuselage]
The intermediate body portion 34 has a plurality of (for example, two) intermediate body portion constituent members 46 in which the intermediate body portion 34 is divided (for example, divided into two) in the circumferential direction of the body 30. The intermediate body portion 34 is formed with a hole 34a into which the base portion (bolt 29a) of the handling tooth 29 is inserted. The intermediate body portion constituent member 46 is composed of a plate material (roll-molded plate material) having a substantially semi-cylindrical shape. The intermediate body portion 34 has a half-divided structure divided into two in the circumferential direction of the body 30. The two intermediate body portion constituent members 46 are made of the same member, and the arrangement of the handling teeth 29 is the same (see FIG. 16). Each intermediate body portion component 46 is removable from the front side body portion 32 and the rear side body portion 33. A connecting portion 46a connected to the other intermediate body portion constituent member 46 is provided at an edge portion on one side of the intermediate body portion constituent member 46 in the circumferential direction. The connecting portion 46a is bolted to the other intermediate body portion constituent member 46 in a state of being abutted from the inner peripheral side.

[Connecting member]
As shown in FIGS. 4 to 7, inside the fuselage 30, a connecting member 47 that connects the front fuselage portion 32 and the intermediate fuselage portion 34 and also connects the posterior fuselage portion 33 and the intermediate fuselage portion 34. Is provided. The connecting member 47 has a front connecting portion 48, a rear connecting portion 48, and a plurality of front-rear facing portions 55. The connecting portion 48 is provided between the front side body portion 32 and the intermediate body portion 34, and between the rear side body portion 33 and the intermediate body portion 34, respectively. The front connecting portion 48 and the rear connecting portion 48 are made of the same member.

The front connecting portion 48 is provided at the boundary between the front fuselage portion 32 and the intermediate fuselage portion 34 inside the fuselage 30 over the inner peripheral surface of the front fuselage portion 32 and the inner peripheral surface of the intermediate body portion 34. ing. The front connecting portion 48 connects the front body portion 32 and the intermediate body portion 34, and also connects the front end portions of the intermediate body portion constituent members 46 adjacent to each other in the circumferential direction of the body 30. The front connecting portion 48 is detachably fixed to the front fuselage portion 32 by bolts 49A, and is detachably fixed to the intermediate fuselage portion 34 (intermediate fuselage portion constituent member 46) by bolts 49B.

The rear connecting portion 48 extends over the inner peripheral surface of the rear fuselage portion 33 and the inner peripheral surface of the intermediate fuselage portion 34 at the boundary portion between the rear fuselage portion 33 and the intermediate fuselage portion 34 inside the fuselage 30. It is provided. The rear connecting portion 48 connects the rear body portion 33 and the intermediate body portion 34, and also connects the rear end portions of the intermediate body portion constituent members 46 adjacent to each other in the circumferential direction of the body 30. The rear connecting portion 48 is detachably fixed to the rear fuselage portion 33 by bolts 49A, and is detachably fixed to the intermediate fuselage portion 34 (intermediate fuselage portion constituent member 46) by bolts 49B.

Bolts 49A and 49B are bolts having hexagonal holes formed in the bolt heads. For fixing the front fuselage portion 32 and the rear fuselage portion 33, bolts 49A having a low bolt head height are used in order to reduce wear of the bolt heads. For fixing the intermediate body portion 34, a bolt 49B having a high bolt head height is used so that the bolt 49B can be easily operated. As a result, the intermediate body portion 34, which is to be removed at the time of maintenance, can be easily attached / detached.

As shown in FIGS. 7 to 9, the connecting portion 48 is provided along the inner peripheral surface of the body 30. The connecting portion 48 is composed of a plate material formed in a substantially ring shape around the rotation axis Y1 along the inner peripheral surface of the body 30. The connecting portion 48 is configured by being divided into a plurality of (for example, two) connecting portion constituent members 51 in the circumferential direction of the body 30. That is, the connecting portion 48 has a half-divided structure divided into two in the circumferential direction of the body 30. The two connecting portion constituent members 51 are made of the same member.

The connecting portion component 51 is made of a plate material having a substantially semi-ring shape. A polymerized portion 51a on which the other connecting portion constituent member 51 is overlapped is formed at one end of the connecting portion constituent member 51 in the circumferential direction of the body 30. In the connecting portion component 51, the boundary portion between the polymerized portion 51a and the other portion has a stepped shape so that the polymerized portion 51a is located on the inner peripheral side in the radial direction of the body 30 with respect to the other portion. It is formed. Bolt holes 51b for bolts 49A and 49B are formed in the connecting portion component 51.

The connecting portion component 51 is formed with a plurality of (for example, four) notched portions 51c into which the base portion (bolt 29a) of the handling tooth 29 and the nut 29b are inserted (see FIGS. 6 and 10). In the connecting portion component 51, the two notches 51c are open on one side in the rotation axis Y1 direction, and the two notches 51c are open on the other side in the rotation axis Y1 direction. The notch 51c that opens on one side and the notch 51c that opens on the other side are displaced in the circumferential direction of the body 30.

Ribs 50 rising from the inner peripheral surface of the connecting portion 48 toward the inside of the body 30 in the radial direction are provided on the entire circumference around the rotation axis Y1 on the inner peripheral surface of the connecting portion 48. The height h1 of the connecting portion 48 of the rib 50 from the inner peripheral surface is the same (including substantially the same) over the entire circumference around the rotation axis Y1. On the inner peripheral side of the rib 50, there is a circular opening 50a centered on the rotation axis Y1. A recess 50b into which the polymerized portion 51a enters is formed in a portion of the rib 50 corresponding to the polymerized portion 51a.

The protrusion 50c provided on the rib 50 is inserted into the opening 51d formed in the connecting portion 48 (connecting portion constituent member 51). A plurality (for example, four) openings 51d are formed in the connecting portion 48 at intervals around the rotation axis Y1. The opening 51d is a long hole long in the circumferential direction of the body 30.

A plurality (for example, four) of the protrusions 50c are formed on the rib 50 at intervals around the rotation axis Y1. The protrusion 50c protrudes outward from the portion of the rib 50 facing the inner peripheral surface of the connecting portion 48 (outer peripheral portion of the rib 50) in the radial direction of the body 30. The protrusions 50c are provided at intervals around the rotation axis Y1 in a state of protruding outward from the connecting portion 48 in the radial direction. The protrusions 50c project outward from the outer peripheral surface of the connecting portion 48 in the radial direction of the body 30, and do not project outward from the outer peripheral surface of the body 30. The protrusion 50c projects so that the outer end surface of the protrusion 50c in the radial direction is flush with the outer peripheral surface of the body 30 (including substantially flush).

The connecting portion 48 and the rib 50 are formed in a state where one connecting portion constituent member 51 is overlapped with the polymerized portion 51a on the other connecting portion constituent member 51 side and the protrusion 50c is fitted in the opening 51d. It is fixed (for example, welded and fixed). The outer peripheral surface of one connecting portion constituent member 51 and the outer peripheral surface of the other connecting portion constituent member 51 are flush with each other. That is, the outer peripheral surface of one connecting portion constituent member 51 and the outer peripheral surface of the other connecting portion constituent member 51 are located on a circle (concentric circle) centered on the rotation axis Y1.

The front-rear facing portion 55 extends in the front-rear direction over the front connecting portion 48 and the rear connecting portion 48. The front-rear facing portion 55 is provided over the inner peripheral surface of the connecting portion 48 on the front side and the inner peripheral surface of the connecting portion 48 on the rear side. The front end portion of the front-rear facing portion 55 is fixed (for example, welded and fixed) to the inner peripheral surface of the front connecting portion 48 and the rib 50 on the front side. The rear end portion of the front-rear facing portion 55 is fixed (for example, welded and fixed) to the inner peripheral surface of the rear connecting portion 48 and the rib 50 on the rear side.

By connecting the front connecting portion 48 and the rear connecting portion 48 by the front-rear facing portion 55, the front connecting portion 48 and the rear connecting portion 48 are integrated. That is, the front connecting portion 48, the rear connecting portion 48, and the front-rear facing portion 55 are configured (unitized) as a unit. The front-rear facing portion 55 is composed of a member having a substantially L-shaped cross section. A plurality of front-rear facing portions 55 are arranged around the rotation axis Y1 at equal-angle intervals. In the present embodiment, four front-rear facing portions 55 are arranged around the rotation axis Y1 at intervals of 90 degrees.

The height h2 of the connecting portion 48 of the front-rear facing portion 55 from the inner peripheral surface is the same as (including substantially the same) the height h1 of the connecting portion 48 of the rib 50 from the inner peripheral surface. In the present embodiment, the height h2 of the connecting portion 48 of the front-rear facing portion 55 from the inner peripheral surface is such that the front-rear facing portion 55 does not protrude from the inner peripheral edge of the rib 50 toward the opening 50a (connection of the rib 50). The height from the inner peripheral surface of the portion 48 is slightly lower than the height h1).

[Connecting part alignment part]
As shown in FIG. 11, the front side that aligns the position of the front body portion 32 with respect to the front connecting portion 48 around the rotation axis Y1 and aligns the position of the front body portion 32 with respect to the front connecting portion 48 in the rotation axis Y1 direction. The connecting portion alignment portion 53F of the above is provided. Rear connection that aligns the position of the rear fuselage 33 with respect to the rear connecting portion 48 around the rotation axis Y1 and aligns the position of the rear fuselage 33 with respect to the rear connecting portion 48 in the direction of the rotation axis Y1. A portion alignment portion 53B is provided.

The front connecting portion positioning portion 53F is provided over the front side body portion 32 and the front connecting portion 48. The front connecting portion alignment portion 53F has a plurality of (for example, four) protrusions 50c and a plurality of (for example, two) insertion portions 32b. The entry portion 32b is provided between the protrusions 50c and is provided at the end portion (rear end portion) on the front side connecting portion 48 side of the front and rear end portions of the front side body portion 32. In other words, a recess 32c into which the protrusion 50c enters is formed between the entry portions 32b at the rear end portion of the front body portion 32. The distance d between the protrusions 50c and the width b of the entry portion 32b around the rotation axis Y1 are set so that the entry portion 32b fits between the protrusions 50c.

The rear connecting portion positioning portion 53B is provided over the rear side fuselage portion 33 and the rear connecting portion 48. The rear connection portion alignment portion 53B has a plurality of (for example, four) protrusions 50c and a plurality of (for example, two) entry portions 33b. The entry portion 33b is provided between the protrusions 50c and is provided at the end portion (front end portion) on the rear side connecting portion 48 side of the front and rear end portions of the rear side body portion 33. In other words, a recess 33c into which the protrusion 50c enters is formed between the entry portions 33b at the front end portion of the rear body portion 33. The distance d between the protrusions 50c and the width b of the entry portion 33b around the rotation axis Y1 are set so that the entry portion 33b fits between the protrusions 50c.

[Alignment between body parts]
An inter-body alignment portion 56 that aligns the position of the intermediate fuselage portion 34 with respect to the rear side fuselage portion 33 around the rotation axis Y1 is provided. The body-to-body alignment portion 56 is provided over the rear body portion 33 and the intermediate body portion 34. The body-to-body alignment portion 56 has a plurality of (for example, two) concave portions 33d and a plurality of (for example, two) convex portions 46b. The recess 33d is formed in the entry portion 33b (specifically, the width center portion of the entry portion 33b) at the front end portion of the rear body portion 33. The convex portion 46b penetrates into the concave portion 33d and is formed at the rear end portion of the intermediate body portion 34.

[Match mark]
A matching mark M indicating a correct positional relationship between the rear fuselage portion 33 and the rear connecting portion 48 is provided over the rear fuselage portion 33 and the rear connecting portion 48. The mating mark M has a mark (recessed portion 33d) on the rear side body portion 33 side and a mark 51e on the rear side connecting portion 48 side. In the present embodiment, the recess 33d functions as a mark on the rear fuselage portion 33 side. The mark 51e is provided in a portion of the connecting portion 48 on the rear side between the protrusions 50c. The mark 51e is formed in a concave shape that opens toward the rear side.

Here, the matching mark M (the mark 51e on the front connecting portion 48 side and the mark 51e on the rear connecting portion 48 side) can also be used when assembling the connecting member 47. Specifically, when assembling the connecting member 47, the mark 51e on the front connecting portion 48 side and the mark 51e on the rear connecting portion 48 side are aligned around the rotation axis Y1 so that the front side is aligned. The connecting portion 48 of the above and the connecting portion 48 on the rear side are aligned.

[Manufacturing method of handling cylinder]
Next, a method of manufacturing the handling cylinder 11 will be described with reference to FIGS. 12 to 15. As shown in FIGS. 12 to 15, the manufacturing method of the handling cylinder 11 includes a rear side body portion attaching step (see FIG. 12), a front side body portion attaching step (see FIG. 13), and an intermediate body portion attaching step (see FIG. 12). 14) and a tooth handling step (see FIG. 15).

As shown in FIG. 12, the rear body portion attaching step is a step of attaching the rear fuselage portion 33 to the rear connecting portion 48. As described above, the rear fuselage portion 33 is fixed to the rear connecting portion 48 by the bolt 49A.

In the process of attaching the rear fuselage portion, the entry portion 33b enters between the protrusions 50c (in other words, the protrusions 50c enter the recess 33c), and the front end portion of the rear side fuselage portion 33 in the direction of the rotation axis Y1. When the portion corresponding to the recess 33c abuts on the protrusion 50c, the rear connecting portion 48 is restricted from entering the inside of the rear fuselage portion 33 from the front end opening edge portion of the rear fuselage portion 33. Become. Then, around the rotation axis Y1, the intrusion portion 33b abuts on the protrusion 50c, so that the rear body portion 33 is restricted from rotating around the rotation axis Y1 with respect to the rear connecting portion 48. become.

In this way, the position of the rear fuselage portion 33 with respect to the rear connecting portion 48 in the direction of the rotation axis Y1 is aligned, and the position of the rear fuselage portion 33 with respect to the rear connecting portion 48 around the rotation axis Y1 is aligned. It will be.

Here, even if the front fuselage portion 32 is erroneously attached to the rear connecting portion 48 in the rear fuselage attachment step, the mark 51e on the rear connecting portion 48 side is attached to the front fuselage portion 32. Since there is no mark corresponding to, you will notice the error at this point. In other words, the recess 33d on the rear fuselage 33 side corresponds to the mark 51e on the rear connecting portion 48 side, so that the rear connecting portion 48 is to be attached to the rear fuselage 33 (rear side). The correct combination of the fuselage portion 33 and the rear connecting portion 48) will be known.

As shown in FIG. 13, the front body portion attaching step is a step of attaching the front body portion 32 to the front connecting portion 48. As described above, the fixing of the front fuselage portion 32 to the front connecting portion 48 is performed by the bolt 49A.

In the front body portion attaching step, the entry portion 32b enters between the protrusions 50c (in other words, the protrusion 50c enters the recess 32c), and among the rear end portions of the front body portion 32 in the rotation axis Y1 direction. When the portion corresponding to the recess 32c abuts on the protrusion 50c, the front connecting portion 48 is restricted from entering the inside of the front body portion 32 from the rear end opening edge portion of the front body portion 32. Then, the intrusion portion 32b abuts on the protrusion 50c around the rotation axis Y1, so that the front body portion 32 is restricted from rotating around the rotation axis Y1 with respect to the front connecting portion 48. ..

In this way, the position of the front body portion 32 with respect to the front connecting portion 48 in the direction of the rotation axis Y1 is aligned, and the position of the front body portion 32 with respect to the front connecting portion 48 around the rotation axis Y1 is aligned.

Here, the roll seam P1 of the front fuselage portion 32 and the roll seam P2 of the rear fuselage portion 33 function as positioning portions for aligning the positions of the front fuselage portion 32 and the rear fuselage portion 33 around the rotation axis Y1. .. The roll seams P1 and P2 can be understood as roll start positions. When the front fuselage portion 32 is attached to the front connecting portion 48, the roll seam P1 of the front fuselage portion 32 is aligned with the roll seam P2 of the rear fuselage portion 33 around the rotation axis Y1. The position of the front fuselage portion 32 with respect to the rear fuselage portion 33 around Y1 will be aligned.

As shown in FIG. 14, the intermediate body portion attaching step is a step of attaching the intermediate body portion 34 (intermediate body portion constituent member 46) to the front side and rear side connecting portions 48. As described above, the intermediate body portion 34 (intermediate body portion constituent member 46) is fixed to the front and rear connecting portions 48 by bolts 49B.

By inserting the convex portion 46b into the concave portion 33d in the intermediate body portion attaching step, the position of the intermediate body portion constituent member 46 with respect to the rear side body portion 33 around the rotation axis Y1 is aligned. Then, the front end portion of the intermediate body portion constituent member 46 abuts on the front projection 50c and the rear end portion (entry portion 32b) of the front side body portion 32, and the rear end portion of the intermediate body portion constituent member 46 is on the rear side. By abutting on the protrusion 50c and the front end portion (entry portion 33b) of the rear side body portion 33, the positions of the intermediate body portion constituent members 46 in the direction of the rotation axis Y1 are aligned.

As shown in FIG. 15, the handling tooth attachment step is a step of attaching the handling teeth 29 to the front side body portion 32, the rear side body portion 33, and the intermediate body portion 34. In the tooth handling step, the handling teeth 29 are attached to the front body portion 32, the rear body portion 33, and the intermediate body while the front body portion 32, the rear body portion 33, and the intermediate body portion 34 are attached to the connecting member 47. It is attached to the portion 34.

Here, as shown in FIG. 16, the connecting member 47 does not overlap with the hole 32a of the front fuselage portion 32, the hole 33a of the rear fuselage portion 33, and the hole 34a of the intermediate fuselage portion 34. Specifically, the front connecting portion 48 does not overlap with the hole 32a of the front fuselage portion 32 and the hole 34a of the intermediate fuselage portion 34, and the rear connecting portion 48 is the rear fuselage portion 33. The hole 33a and the hole 34a of the intermediate body portion 34 do not overlap, and the front-rear facing portion 55 does not overlap with the hole 34a of the intermediate body portion 34. As a result, with the front body portion 32, the rear body portion 33, and the intermediate body portion 34 attached to the connecting member 47, the handling teeth 29 do not interfere with the connecting member 47, and the handling teeth 29 are attached to the body 30. Can be attached.

[Another Embodiment]
(1) In the above embodiment, in the tooth handling step, the handling teeth 29 are attached to the front side body portion 32, the rear side body portion 33, and the intermediate body portion 34. However, as shown in FIG. 17, in the intermediate body portion attaching step, the handling teeth 29 may be attached to the intermediate body portion 34.

(2) In the above embodiment, the front connecting portion alignment portion 53F is the position of the front body portion 32 with respect to the front connecting portion 48 in the rotation axis Y1 direction by the entry portion 32b entering between the protrusions 50c. Is aligned, and the position of the front fuselage portion 32 with respect to the front connecting portion 48 around the rotation axis Y1 is configured to be aligned. Similarly, in the rear connecting portion positioning portion 53B, the position of the rear fuselage portion 33 with respect to the rear connecting portion 48 in the rotation axis Y1 direction is aligned by the intrusion portion 33b entering between the protrusions 50c. In addition, the position of the rear fuselage portion 33 with respect to the rear connecting portion 48 around the rotation axis Y1 is configured to be aligned.

However, as shown in FIG. 18, the rear end portion of the front fuselage portion 32 abuts on the protrusion 50c in the rotation axis Y1 direction without providing the insertion portion 32b, whereby the front side connection in the rotation axis Y1 direction is connected. The position of the front fuselage portion 32 with respect to the portion 48 may be aligned. Similarly, the front end portion of the rear fuselage portion 33 abuts on the protrusion 50c in the rotation axis Y1 direction without providing the entry portion 33b, whereby the rear side with respect to the rear connecting portion 48 in the rotation axis Y1 direction. The positions of the body portions 33 may be aligned.

Alternatively, as shown in FIG. 19, a plurality of protrusions 32d are provided inside the front fuselage portion 32 at intervals around the rotation axis Y1, and enter into the front connecting portion 48 between the protrusions 32d. A portion 48a is provided, and the entry portion 48a is inserted between the protrusions 32d so that the position of the front body portion 32 with respect to the front connecting portion 48 in the direction of the rotation axis Y1 is aligned, and the front side around the rotation axis Y1. The position of the front fuselage portion 32 with respect to the connecting portion 48 of the above may be aligned. Similarly, a plurality of protrusions 33e are provided inside the rear body portion 33 at intervals around the rotation axis Y1, and the connecting portion 48 on the rear side is provided with an entry portion 48a that enters between the protrusions 33e. By inserting the intrusion portion 48a between the protrusions 33e, the position of the rear fuselage portion 33 with respect to the rear connection portion 48 in the rotation axis Y1 direction is aligned, and the rear side of the rotation axis Y1 is aligned. The position of the rear fuselage portion 33 with respect to the connecting portion 48 may be aligned.

(3) In the above embodiment, the body-to-body alignment portion 56 has a concave portion 33d on the rear body portion 33 side and a convex portion 46b on the intermediate body portion 34 side, which is inserted into the concave portion 33d. ing. However, the body-to-body alignment portion 56 may have a concave portion on the intermediate body portion 34 side and a convex portion on the rear side body portion 33 side that enters the concave portion.

(4) In the above embodiment, the body-to-body alignment portion 56 is provided over the rear fuselage portion 33 and the intermediate fuselage portion 34. However, instead of or in conjunction with this, the inter-body portion positioning portion for aligning the position of the intermediate body portion 34 with respect to the front side body portion 32 around the rotation axis Y1 extends over the front side body portion 32 and the intermediate body portion 34. It may be provided.

(5) In the above embodiment, the mark (recessed portion 33d) on the rear side body portion 33 side is provided in the entry portion 33b of the rear side body portion 33, and the mark 51e on the rear side connecting portion 48 side is on the rear side. It is provided in the portion between the protrusions 50c of the connecting portion 48 of the above. However, the portion where the mark (recessed portion 33d) on the rear side fuselage portion 33 side is provided is not limited to the portion of the rear side fuselage portion 33 according to the above embodiment, and is on the rear side connecting portion 48 side. The location where the mark 51e is provided is not limited to the portion of the connecting portion 48 on the rear side according to the above embodiment.

(6) In the above embodiment, the protrusion 50c projects so that the outer end surface of the protrusion 50c in the radial direction is flush with the outer peripheral surface of the body 30. However, the protrusion 50c may protrude so that the outer end surface of the protrusion 50c in the radial direction is located inward in the radial direction with respect to the outer peripheral surface of the body 30.

(7) In the above embodiment, the rib 50 is provided on the entire circumference around the rotation axis Y1 on the inner peripheral surface of the connecting portion 48. However, the rib 50 may be provided on a part (for example, a plurality of parts) around the rotation axis Y1 on the inner peripheral surface of the connecting portion 48.

(8) In the above embodiment, the height h1 from the inner peripheral surface of the connecting portion 48 of the rib 50 is the same over the entire circumference around the rotation axis Y1. However, the height h1 from the inner peripheral surface of the connecting portion 48 of the rib 50 may be different around the rotation axis Y1.

(9) In the above embodiment, the height h2 of the connecting portion 48 of the front-rear facing portion 55 from the inner peripheral surface is such that the front-rear facing portion 55 does not protrude from the inner peripheral edge of the rib 50 toward the opening 50a (rib). The height from the inner peripheral surface of the connecting portion 48 of the 50 is set to be slightly lower than the height h1). However, the height h2 from the inner peripheral surface of the connecting portion 48 of the front-rear facing portion 55 is the height at which the front-rear facing portion 55 protrudes from the inner peripheral edge of the rib 50 toward the opening 50a (inside the connecting portion 48 of the rib 50). It may be set to a height slightly higher than the height h1 from the peripheral surface).

(10) In the above embodiment, the body 30 is divided into three front and rear parts. However, the fuselage 30 may be divided into four or more in the front-rear direction. Alternatively, the body 30 may be divided into two parts in the front-rear direction.

(11) In the above embodiment, the intermediate body portion 34 is divided into two in the circumferential direction of the body 30. However, the intermediate body portion 34 may be divided into three or more in the circumferential direction of the body 30.

The present invention can be used not only for head-feeding combine harvesters but also for ordinary-type combine harvesters.

10 Threshing device 11 Handling body 28 Handling body shaft 29 Handling teeth 29a Base 30 Body 32 Front body (body)
32a hole 33 rear fuselage (fuselage)
33a Hole 34 Intermediate fuselage part (body part)
34a Hole 47 Connecting member 48 Connecting part 50 Rib 51c Notch 55 Front-rear facing part h1 Height from the inner peripheral surface of the rib connecting part h2 Height from the inner peripheral surface of the connecting part of the front-rear facing part M Match mark P1 Roll seam P2 Roll seam Y1 Rotation axis

Claims (8)

It is a combine equipped with a threshing device that threshs the harvested culm with a handling barrel.
The handling cylinder has a handling cylinder shaft extending in the front-rear direction and a body supported by the handling cylinder shaft and having a plurality of handling teeth attached to the outer peripheral portion.
The fuselage has a plurality of fuselage portions in which the fuselage is divided back and forth and rotates integrally.
A connecting member for connecting the body portions adjacent to each other in the front-rear direction is provided.
A hole is formed in the body portion into which the base portion of the handling tooth is inserted.
The connecting member does not overlap with the hole and
The connecting member is provided on the inner peripheral surface of the front body portion and the inner peripheral surface of the rear body portion at the boundary between the front body portion and the rear body portion inside the body. a connecting portion that is provided What Wataru,
A plurality of notches into which the base of the tooth is inserted is formed in the connecting portion.
The combine is provided with a front notch that opens to the front side of the connecting portion and a rear notch that opens to the rear of the connecting portion as the notch. It is a combine equipped with a threshing device that threshs the harvested culm with a handling barrel.
The handling cylinder has a handling cylinder shaft extending in the front-rear direction and a body supported by the handling cylinder shaft and having a plurality of handling teeth attached to the outer peripheral portion.
The fuselage has a plurality of fuselage portions in which the fuselage is divided back and forth and rotates integrally.
A connecting member for connecting the body portions adjacent to each other in the front-rear direction is provided.
A hole is formed in the body portion into which the base portion of the handling tooth is inserted.
The connecting member does not overlap with the hole and
The connecting member has a connecting portion extending over an inner peripheral surface of the body portion on the front side and an inner peripheral surface of the body portion on the rear side.
A plurality of cutout portions into which the base portion of the handling tooth enters is formed in the connecting portion.
As the notch, a front notch that opens to the front side in the connecting portion and a rear notch that opens to the rear side in the connecting portion are provided.
The connecting portion is composed of a plate material formed in a substantially ring shape around the rotation axis of the handling cylinder along the inner peripheral surface of the fuselage.
The connection portion rib inner rises from the peripheral surface toward the inside in the radial direction of the fuselage is provided on the entire circumference around the rotation axis of the inner peripheral surface of the connecting portion Turkey Nbain. The combine according to claim 2 , wherein the height of the rib from the inner peripheral surface of the connecting portion is the same over the entire circumference around the rotation axis. The fuselage is divided back and forth into three or more said fuselage portions.
The connecting member is continuous with the front and rear connecting portions extending from the inner peripheral surface of the front body portion and the inner peripheral surface of the middle body portion among the three continuous front and rear body portions. Of the three body portions, the rear side connecting portion extending over the inner peripheral surface of the body portion on the rear side and the inner peripheral surface of the middle body portion, and the front connecting portion and the rear connecting portion. With a plurality of anterior-posterior facing portions extending in the anterior-posterior direction.
The combine according to claim 2 or 3 , wherein the plurality of front-rear facing portions do not overlap with the holes. The front-rear facing portion is provided over the inner peripheral surface of the front connecting portion and the inner peripheral surface of the rear connecting portion.
The combine according to claim 4 , wherein the height of the front-rear facing portion from the inner peripheral surface of the connecting portion is the same as the height of the rib from the inner peripheral surface of the connecting portion. The combine according to any one of claims 1 to 5, wherein the front notch and the rear notch are displaced in the circumferential direction of the body. The combine according to any one of claims 1 to 6, wherein a matching mark indicating a correct positional relationship between the body portion and the connecting portion is provided across the body portion and the connecting portion. The body portion is made of a roll-molded plate material.
Any of claims 1 to 7, wherein the plurality of body portions are aligned by aligning the roll seams of the plurality of body portions around the rotation axis of the handling cylinder. The combine described in paragraph 1.

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