Head-feeding combine harvester

Abstract

To provide a combine harvester capable of easily performing the maintenance of a threshing cylinder.SOLUTION: The threshing cylinder 11 has a threshing cylinder shaft 28 extending in the longitudinal direction of the machine body, and a body 30 supported by the threshing cylinder shaft 28 and having a plurality of threshing teeth attached to the outer peripheral part, and the body 30 has a plurality of body parts 32, 33 and 34 obtained by dividing the body into front and rear parts. At least one of the plurality of body portions 32, 33, and 34 is a detachable body portion 34 that is detachable during maintenance, and body portions other than the detachable body portion 34 among the plurality of body portions 32, 33, and 34 are non-detachable body portions that are not detached during maintenance, and an inner surface of the non-detachable body portion is accessible through an opening formed by detaching the detachable body portion 34.SELECTED DRAWING: Figure 5

Description

[Technical Field]

[0001] The present invention relates to a head-threshing combine equipped with a threshing device that threshes harvested stalks using a threshing drum. [Background technology]

[0002] The combine described in Patent Document 1 is already known as an example of such a combine harvester. The combine described in Patent Document 1 is equipped with a threshing device (referred to as a "thresher" in the document) that threshes harvested stalks using a threshing drum. The threshing drum has a threshing drum shaft (referred to as a "support shaft" in the document) extending in the longitudinal direction of the machine body, and a body (referred to as a "threshing drum" in the document) that is supported by the threshing drum shaft and has multiple threshing teeth attached to its outer periphery. The threshing drum is equipped with an inspection opening provided in the peripheral wall of the body and a removable cover that closes the inspection opening. In the combine described in Patent Document 1, maintenance of the threshing drum (for example, replacing the threshing teeth) can be performed by reaching inside the body through the inspection opening. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2010-068752 Summary of the Invention [Problem to be solved by the invention]

[0004] In the combine described in Patent Document 1, the inspection opening is small, so when performing maintenance on the threshing drum (for example, replacing the threshing teeth), it is not easy to reach inside the drum through the inspection opening and perform the work.

[0005] In view of the above situation, there is a demand for a combine harvester that allows easy maintenance of the threshing drum. [Means for solving the problem]

[0006] The present invention is characterized by: A head-threshing combine equipped with a threshing device that threshes harvested stalks using a threshing drum, The threshing drum has a threshing drum shaft extending in the fore-and-aft direction of the machine body, and a body supported by the threshing drum shaft and having a plurality of threshing teeth attached to its outer periphery, The fuselage has a plurality of fuselage sections divided into front and rear sections, At least one of the plurality of body sections is a detachable body section that can be detached during maintenance, Among the plurality of body sections, body sections other than the detachable body section are non-detachable body sections that are not detached during maintenance, The inner surface of the non-detachable body portion can be accessed through an opening formed by removing the detachable body portion.

[0007] According to this characteristic configuration, by removing the detachable body section, a large opening appears in the part of the body where the specific intermediate body section was removed. This makes it easy to reach inside the body through the part of the body where the detachable body section was removed to perform maintenance on the threshing drum (for example, replacing the threshing teeth). In other words, according to this characteristic configuration, a combine harvester can be realized that makes it easy to perform maintenance on the threshing drum. Furthermore, in the present invention, it is preferable that the non-detachable body portion is not divided along the circumferential direction but is continuous over the entire circumferential direction. Furthermore, in the present invention, it is preferable that a front-rear connecting member for connecting adjacent front and rear body sections among the plurality of body sections is provided inside the body. According to this characteristic configuration, when assembling the handling drum, handling the fuselage in multiple fuselage sections requires less labor than handling the entire fuselage as a single unit. Furthermore, the shorter front-to-rear length of each fuselage section provides strength. Furthermore, by connecting adjacent front-to-rear fuselage sections with a front-to-rear connecting member, it is not necessary to overlap adjacent front-to-rear fuselage sections. The adjacent front-to-rear fuselage sections can be easily connected so that the outer peripheral surfaces of the front and rear fuselage sections are flush with each other. Furthermore, in the present invention, it is preferable that the front and rear connecting members connect the detachable body portion and the non-detachable body portion.

[0008] Furthermore, in the present invention, The detachable body portion preferably has a plurality of body portion constituent members divided in the circumferential direction of the body.

[0009] According to this characteristic configuration, when assembling the detachable body, handling the detachable body section separately as multiple body components requires less labor than handling the entire detachable body section as a single unit. In addition, the circumferential length of each body component is shorter, which is advantageous in terms of strength.

[0010] Furthermore, in the present invention, The detachable body portion preferably has a half-split structure divided into two in the circumferential direction.

[0011] According to this characteristic configuration, it is easy to achieve a good weight balance in the radial direction of the fuselage between one fuselage constituent member and the other fuselage constituent member.

[0012] Furthermore, in the present invention, It is preferable that a circumferential connecting member be provided to connect adjacent ones of the plurality of body constituent members in the circumferential direction.

[0013] According to this characteristic configuration, by connecting the circumferentially adjacent body constituent members with the circumferential connecting member, the circumferentially adjacent body constituent members can be easily connected to each other.

[0014] Furthermore, in the present invention, It is preferable that the plurality of body constituent members are made of the same material and have the same arrangement of the handling teeth.

[0015] This characteristic configuration allows for a reduction in the number of parts by standardizing the body components. Furthermore, there is no risk of mixing up the body components when assembling the handling cylinder, allowing for more efficient work.

[0016] Furthermore, in the present invention, The fuselage has a plurality of fuselage sections divided into front and rear sections, the fuselage has, as the fuselage section, a front fuselage section located on the front side, a rear fuselage section located on the rear side, and an intermediate fuselage section located between the front fuselage section and the rear fuselage section, It is preferable that the front fuselage section, the rear fuselage section, and the intermediate fuselage section have approximately the same length in the front-to-rear direction.

[0017] According to this characteristic configuration, when assembling the threshing body, handling the body in multiple body sections reduces the labor required compared to handling the entire body as a single unit. Furthermore, the shorter front-to-rear length of each body section is advantageous in terms of strength. Furthermore, by making the strength of each body section approximately equal, the strength of the entire body can be made uniform.

[0018] According to this characteristic configuration, when assembling the handling drum, handling the fuselage in multiple fuselage sections requires less labor than handling the entire fuselage as a single unit. Furthermore, the shorter front-to-rear length of each fuselage section provides strength. Furthermore, by connecting adjacent front-to-rear fuselage sections with a front-to-rear connecting member, it is not necessary to overlap adjacent front-to-rear fuselage sections. The adjacent front-to-rear fuselage sections can be easily connected so that the outer peripheral surfaces of the front and rear fuselage sections are flush with each other.

[0019] Furthermore, in the present invention, The front and rear connecting members are preferably provided inside the fuselage.

[0020] According to this characteristic configuration, the front and rear connecting members do not come into contact with the stalks in the threshing chamber, thereby interfering with the threshing process, and the front and rear connecting members do not become worn out due to contact with the stalks in the threshing chamber. [Brief explanation of the drawings]

[0021] [Figure 1] FIG. 1 is a left side view showing a head-feeding combine harvester. [Figure 2] FIG. 1 is a plan view showing a head-feeding combine harvester. [Figure 3] FIG. 2 is a left side cross-sectional view showing the threshing device. [Figure 4] FIG. [Figure 5] FIG. [Figure 6] FIG. 10 is a diagram showing a state in which the front fuselage section, the rear fuselage section, and the intermediate fuselage section are connected to each other. [Figure 7] 7 is a cross-sectional view taken along line VII-VII in FIG. 4. [Figure 8] FIG. [Figure 9] FIG. [Figure 10] XX cross-sectional view of FIG. 6. [Figure 11] FIG. 10 is a diagram showing a process of attaching a tooth. [Figure 12] 10A and 10B are diagrams showing a process of attaching the front and rear connecting members. [Figure 13] FIG. 10 is a diagram showing the process of attaching the threshing drum shaft. [Figure 14] FIG. 10 is a diagram showing a front-rear connecting process. [Figure 15] FIG. 10 is a view showing a threshing drum according to a first alternative embodiment. [Figure 16] FIG. 10 is a view showing a threshing drum according to a second alternative embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0022] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described with reference to the drawings.

[0023] [Overall configuration of the combine] 1 and 2 show a head-feeding combine harvester. This combine harvester comprises a machine body frame 1 and a traveling device 2 that supports the machine body frame 1. A driver's cabin 3 is provided on the right side of the front of the machine body. The driver's cabin 3 comprises a driver's section 4 in which the driver sits, and a cabin 5 that covers the driver's section 4. An engine (not shown) is provided below the driver's section 4.

[0024] A reaping unit 6 that reaps the planted stalks is provided in front of the driver's cabin 3. A grain storage tank 7 that stores grain is provided behind the driver's cabin 3. A grain discharge device 8 that discharges the grain from the grain storage tank 7 is provided. A feed chain 9 that clamps and transports the reaped stalks is provided on the left side of the machine body. A threshing device 10 is provided to the left of the grain storage tank 7. The threshing device 10 threshes the reaped stalks transported by the feed chain 9 using a threshing drum 11. A straw waste conveying device 12 is connected to the rear of the threshing device 10. The straw waste conveying device 12 receives the threshed straw from the feed chain 9 and clamps and transports it to the rear.

[0025] [Reaping section] The reaping unit 6 is configured for multiple reaping (for example, six-row reaping) specifications. The reaping unit 6 is equipped with multiple (for example, seven) weed dividing tools 13, multiple (for example, six) lifting devices 14, cutting devices 15, and a transport device 16. The weed dividing tools 13 divide planted culms in the field. The raising device 14 raises the divided planted stalks. The cutting device 15 cuts the raised planted stalks. The conveying device 16 conveys the harvested stalks backward toward the threshing device 10.

[0026] [Threshing equipment] As shown in Figure 3, a threshing chamber 17 is formed in the upper part of the threshing device 10. A threshing drum 11 is provided in the threshing chamber 17. The threshing drum 11 is rotatable around a rotation axis Y1 extending in the front-to-rear direction of the machine body. A receiving net 18 is provided below the threshing drum 11. A dust exhaust fan 19 is provided behind the threshing chamber 17 to exhaust dust to the outside.

[0027] The lower part of the threshing device 10 is provided with an oscillating sorting device 20 that sifts and sorts the material to be sorted while transporting it to the rear of the machine body, a winnowing machine 21 that blows sorting air to the oscillating sorting device 20, a first collection section 22 that collects the first grains (single grains, etc.), and a second collection section 23 that collects the second grains (grains with stalks, etc.).

[0028] The first collection section 22 is provided with a first screw 24 that transports the first grains to the right. A grain lifting device 25 that lifts and transports the first grains to the grain storage tank 7 is interlocked with the right end of the first screw 24.

[0029] The second recovery section 23 is provided with a second screw 26 that transports the second grains to the right. A second return device 27 that returns the second grains to the oscillating sorting device 20 is interlocked with the right end of the second screw 26.

[0030] [Thrusting drum] As shown in Figures 3 to 5, the threshing drum 11 has a threshing drum shaft 28 extending in the longitudinal direction of the machine body, and a substantially cylindrical body 30 supported by the threshing drum shaft 28 and having a plurality of threshing teeth 29 attached to its outer periphery. The threshing drum 11 is rotatable around a rotation axis Y1 extending in the longitudinal direction of the machine body. The threshing drum 11 is supported by a front wall 31F and a rear wall 31B of the threshing chamber 17 via the threshing drum shaft 28. The body 30 has multiple (e.g., three) body sections obtained by dividing the body 30 into front and rear sections (e.g., three sections). The body sections of the body 30 include a front body section 32 located on the front side, a rear body section 33 located on the rear side, and an intermediate body section 34 (corresponding to the "detachable body section" according to the present invention) located between the front body section 32 and the rear body section 33. The front fuselage section 32, the rear fuselage section 33, and the intermediate fuselage section 34 are supported by a single threshing shaft 28 so that they rotate integrally. The front-to-rear length L1 of the front fuselage section 32, the front-to-rear length L2 of the rear fuselage section 33, and the front-to-rear length L3 of the intermediate fuselage section 34 are substantially equal. In other words, the front fuselage section 32, the rear fuselage section 33, and the intermediate fuselage section 34 have substantially equal lengths in the front-to-rear direction.

[0031] The threshing cylinder shaft 28 is rotatably supported on the front wall 31F via a front bearing 35, and is rotatably supported on the rear wall 31B via a rear bearing 36. An input pulley 37, to which driving force from the engine is input, is provided on the portion of the threshing cylinder shaft 28 that protrudes forward from the front wall 31F.

[0032] [Front body part] The front body section 32 is formed from a substantially cylindrical plate material. A front plate material 38 that closes the front end opening is fixed to the edge of the front end opening of the front body section 32 with bolts. A front boss 39 is fixed to the rear surface of the front plate material 38 (the surface facing the interior of the body 30) with a bolt 40. The front boss 39 is fixed to the threshing drum shaft 28 with a bolt 41. The front plate material 38 is supported by the threshing drum shaft 28 via the front boss 39 so as to be able to rotate constantly with the threshing drum shaft 28.

[0033] [Rear body part] The rear body section 33 is formed from a substantially cylindrical plate material. A rear plate material 42 that closes the rear end opening is fixed to the edge of the rear end opening of the rear body section 33 with bolts. A rear boss 43 is fixed to the front surface of the rear plate material 42 (the surface facing the interior of the body 30) with a bolt 44. The rear boss 43 is fixed to the threshing drum shaft 28 with a bolt 45. The rear plate material 42 is supported by the threshing drum shaft 28 via the rear boss 43 so as to be rotatable integrally with the threshing drum shaft 28.

[0034] [Intermediate fuselage section] The intermediate fuselage section 34 has a plurality (e.g., two) intermediate fuselage components 46 (corresponding to the "fuselage components" of the present invention) formed by dividing the intermediate fuselage section 34 (e.g., into two) in the circumferential direction of the fuselage 30. The intermediate fuselage components 46 are formed from a substantially semi-cylindrical plate material. The intermediate fuselage section 34 has a half-split structure, being divided into two in the circumferential direction of the fuselage 30. The two intermediate fuselage components 46 are formed from the same material and have the same arrangement of the handling teeth 29. Each intermediate fuselage component 46 is detachable from the forward fuselage section 32 and the aft fuselage section 33. A connecting portion 46a is provided on one edge of each intermediate fuselage component 46 in the circumferential direction of the fuselage 30, which connects to the other intermediate fuselage component 46. The connecting portion 46a is bolted to the other intermediate fuselage component 46 while being abutted against the inner circumferential side.

[0035] [Connecting member] 4 to 6, a front connecting member 48 and a rear connecting member 48 are provided in the front-rear intermediate portion inside the fuselage 30. The front connecting member 48 is provided at the boundary between the front fuselage section 32 and the intermediate fuselage section 34 inside the fuselage 30. The front connecting member 48 connects the front fuselage section 32 and the intermediate fuselage section 34, connects the threshing shaft 28 to the front fuselage section 32 and the intermediate fuselage section 34, and connects the front ends of intermediate fuselage component members 46 that are adjacent in the circumferential direction of the fuselage 30. The front connecting member 48 is detachably fixed to the front fuselage section 32 and the intermediate fuselage section 34 with bolts 47.

[0036] The rear connecting member 48 is provided at the boundary between the rear fuselage section 33 and the intermediate fuselage section 34 inside the fuselage 30. The rear connecting member 48 connects the rear fuselage section 33 and the intermediate fuselage section 34, connects the threshing shaft 28 to the rear fuselage section 33 and the intermediate fuselage section 34, and connects the rear ends of intermediate fuselage constituent members 46 that are adjacent in the circumferential direction of the fuselage 30. The rear connecting member 48 is detachably fixed to the rear fuselage section 33 and the intermediate fuselage section 34 with bolts 47.

[0037] The front connecting member 48 and the rear connecting member 48 are made of the same material. The connecting member 48 has a body portion connecting portion 49 (corresponding to the "circumferential connecting member" and "front-rear connecting member" according to the present invention) that runs along the inner surface of the body 30, and a radial connecting portion 50 that spans between the handling body shaft 28 and the body portion connecting portion 49.

[0038] The front fuselage section coupling section 49 couples the front fuselage section 32 and the intermediate fuselage section 34, and also couples the front ends of intermediate fuselage components 46 that are adjacent in the circumferential direction of the fuselage 30. Each intermediate fuselage component 46 is detachable from the front fuselage section coupling section 49. The rear fuselage section coupling section 49 couples the rear fuselage section 33 and the intermediate fuselage section 34, and also couples the rear ends of intermediate fuselage components 46 that are adjacent in the circumferential direction of the fuselage 30. Each intermediate fuselage component 46 is detachable from the rear fuselage section coupling section 49.

[0039] As shown in Figures 7 to 9, the body section connecting portion 49 is provided along the inner circumferential surface of the body 30. The body section connecting portion 49 is formed in a generally ring shape that follows the inner circumferential surface of the body 30. The body section connecting portion 49 is configured by being divided into multiple (for example, two) body section connecting portion constituent members 51 in the circumferential direction of the body 30. In other words, the body section connecting portion 49 has a half-split structure that is divided into two in the circumferential direction of the body 30. The two body section connecting portion constituent members 51 are configured from the same material.

[0040] The body connection component 51 is made of a plate material having a substantially semi-annular shape. One end of the body connection component 51 in the circumferential direction of the body 30 is formed with an overlapping portion 51a onto which the other body connection component 51 is overlapped. In the body connection component 51, the boundary between the overlapping portion 51a and the other portion is formed in a stepped shape so that the overlapping portion 51a is located closer to the inner periphery in the radial direction of the body 30 than the other portion. The body connection component 51 is formed with a bolt hole 51b for the bolt 47.

[0041] The body connection component 51 has a plurality of (for example, four) notches 51c into which the bolts 29a and nuts 29b that secure the treatment tooth 29 to the body 30 fit (see FIGS. 6 and 10). In the body connection component 51, two notches 51c open to one side in the direction of the rotation axis Y1, and two notches 51c open to the other side in the direction of the rotation axis Y1. The notches 51c opening to one side and the notches 51c opening to the other side are misaligned in the circumferential direction of the body 30.

[0042] The front radial connecting portion 50 connects the threshing body shaft 28 and the front body connecting portion 49 . An intermediate boss 52 is fixed to the front surface of the front radial connecting portion 50 by a bolt 53. The intermediate boss 52 is fixed to the handling cylinder shaft 28 by a bolt 54. The front connecting member 48 is supported on the handling cylinder shaft 28 via the intermediate boss 52 so as to be rotatable integrally with the handling cylinder shaft 28.

[0043] The rear radial connecting portion 50 connects the threshing body shaft 28 and the rear body connecting portion 49 . An intermediate boss 52 is fixed to the rear surface of the rear radial connecting portion 50 by a bolt 53. The intermediate boss 52 is fixed to the handling cylinder shaft 28 by a bolt 54. The rear connecting member 48 is supported on the handling cylinder shaft 28 via the intermediate boss 52 so as to be rotatable integrally with the handling cylinder shaft 28.

[0044] The radial connecting portion 50 is made of a plate material having a plate surface facing the direction of the rotation axis Y1. The radial connecting portion 50 is formed with a plurality of (for example, four) openings 50a that open toward the direction of the rotation axis Y1. The radial connecting portion 50 is formed with a recess 50b in which the to-be-overlapped portion 51a fits at a location corresponding to the to-be-overlapped portion 51a.

[0045] A plurality of (for example, four) connecting rods 55 are provided between the front connecting member 48 and the rear connecting member 48, connecting them. The front connecting member 48 and the rear connecting member 48 are connected by the connecting rods 55, thereby integrating the front connecting member 48 and the rear connecting member 48. In other words, the front connecting member 48, the rear connecting member 48, and the connecting rod 55 are configured as a unit (unitized). The connecting rod 55 is configured by a member having a substantially L-shaped cross section. A plurality of connecting rods 55 are arranged at equal angular intervals around the rotation axis Y1. In this embodiment, four connecting rods 55 are arranged at 90-degree intervals around the rotation axis Y1.

[0046] A restricting portion 56 is provided between the body portion and the connecting member 48 to restrict the connecting member 48 from entering the interior of the body portion through the opening edge of the body portion (see FIGS. 6 and 10). The restricting portion 56 is formed by inserting a protrusion 50c provided on the radial connecting portion 50 into an opening 51d formed in the body portion connecting portion 49 (body portion connecting portion constituent member 51). A plurality of openings 51d (for example, four) are formed in the body portion connecting portion 49 at equal angular intervals around the rotation axis Y1. The openings 51d are elongated holes that are long in the circumferential direction of the body 30.

[0047] A plurality of (for example, four) protrusions 50c are formed at equal angular intervals around the rotation axis Y1 in the radial coupling part 50. The protrusions 50c protrude radially outward from a portion of the radial coupling part 50 that faces the inner circumferential surface of the body 30 (the outer circumferential part of the radial coupling part 50). In the radial direction of the body 30, the protrusions 50c protrude outward beyond the outer circumferential surface of the body part coupling part 49, but do not protrude outward beyond the outer circumferential surface of the body 30.

[0048] With one body portion connection component 51 overlapping the overlapping portion 51a of the other body portion connection component 51 and with the protrusion 50c fitted into the opening 51d, the body portion connection portion 49 and the radial connection portion 50 are fixed (for example, welded) to form a connection member 48. The outer peripheral surface of one body portion connection component 51 and the outer peripheral surface of the other body portion connection component 51 are flush with each other. In other words, the outer peripheral surface of one body portion connection component 51 and the outer peripheral surface of the other body portion connection component 51 are located on circles (concentric circles) centered on the rotation axis Y1.

[0049] 6, the front fuselage connecting part 49 is fixed to the edge of the rear opening of the front fuselage part 32 by bolts 47, with the front fuselage connecting part 49 having entered the interior of the front fuselage part 32 from the edge of the rear opening of the front fuselage part 32. At this time, a restricting part 56 restricts the front connecting member 48 from entering the interior of the front fuselage part 32 from the edge of the rear opening of the front fuselage part 32. When the protrusion 50c abuts against the edge of the rear opening of the front fuselage part 32, the front connecting member 48 does not enter any further into the interior of the front fuselage part 32.

[0050] The rear fuselage connecting part 49 is fixed to the front opening edge of the rear fuselage part 33 with bolts 47, with the rear fuselage part 49 having entered the interior of the rear fuselage part 33 from the front opening edge of the rear fuselage part 33. At this time, the rear connecting member 48 is restricted by a restricting part 56 from entering the interior of the rear fuselage part 33 from the front opening edge of the rear fuselage part 33. When the protrusion 50c abuts against the front opening edge of the rear fuselage part 33, the rear connecting member 48 is prevented from entering any further into the interior of the rear fuselage part 33.

[0051] The intermediate fuselage 34 (intermediate fuselage constituent member 46) is fixed to the rear half of the front fuselage connecting section 49 and the front half of the rear fuselage connecting section 49 by bolts 47. By removing the bolts 47, each intermediate fuselage constituent member 46 can be removed from the front fuselage connecting section 49 and the rear fuselage connecting section 49.

[0052] [Manufacturing method of handling drum] Next, a manufacturing method of the threshing drum 11 will be described with reference to Figures 11 to 14. As shown in Figures 11 to 14, the manufacturing method of the threshing drum 11 includes a threshing teeth attaching step, a front and rear connecting member attaching step, a threshing drum shaft attaching step, and a front and rear connecting step.

[0053] As shown in Figure 11, the handling teeth attaching process is a process of attaching the handling teeth 29 to the front fuselage section 32, the rear fuselage section 33, and the intermediate fuselage section 34. As shown in Figure 12, the front-to-rear connecting member attaching process is a process of attaching the front connecting member 48 to the front fuselage section 32 and attaching the rear connecting member 48 to the rear fuselage section 33. After the handling teeth attaching process is performed, in the front-to-rear connecting member attaching process, the front connecting member 48 is fixed to the front fuselage section 32 with bolts 47 and the rear connecting member 48 is fixed to the rear fuselage section 33 with bolts 47. At this time, the front connecting member 48 is fixed to the rear end opening edge of the front fuselage section 32 with bolts 47 in a state where the restricting section 56 prevents the front connecting member 48 from entering the interior of the front fuselage section 32 from the rear end opening edge of the front fuselage section 32, and the rear connecting member 48 is fixed to the front end opening edge of the rear fuselage section 33 with bolts 47 in a state where the restricting section 56 prevents the rear connecting member 48 from entering the interior of the rear fuselage section 33 from the front end opening edge of the rear fuselage section 33.

[0054] 13, the threshing cylinder shaft installation process is a process of installing the threshing cylinder shaft 28 to the front body section 32 and the rear body section 33. After the front / rear connecting member installation process is performed, in the threshing cylinder shaft installation process, the threshing cylinder shaft 28 is fixed to the front boss 39 with the bolt 41, fixed to the front intermediate boss 52 with the bolt 54, fixed to the rear intermediate boss 52 with the bolt 54, and fixed to the rear boss 43 with the bolt 45.

[0055] 14, the front-to-rear connecting step is a step of connecting the intermediate fuselage section 34 to the front fuselage section 32 via the front connecting member 48 and to the rear fuselage section 33 via the rear connecting member 48. After the threshing shaft attaching step, in the front-to-rear connecting step, each intermediate fuselage component 46 is fixed to the front connecting member 48 with bolts 47 and to the rear connecting member 48 with bolts 47.

[0056] [Another embodiment] (1) In the above embodiment, the fuselage 30 is divided into three parts, front and rear. However, the fuselage 30 may be divided into four or more parts, front and rear. Alternatively, the fuselage 30 may be divided into two parts, front and rear. In this case, as shown in Figure 15, the front fuselage section 32 may be divided into two front fuselage constituent members in the circumferential direction of the fuselage 30, and each front fuselage constituent member may be configured to be detachable from the rear fuselage section 33. Alternatively, as shown in Figure 16, the rear fuselage section 33 may be divided into two rear fuselage constituent members in the circumferential direction of the fuselage 30, and each rear fuselage constituent member may be configured to be detachable from the front fuselage section 32.

[0057] (2) In the above embodiment, the front fuselage section 32, the rear fuselage section 33, and the intermediate fuselage section 34 have approximately the same length in the front-to-rear direction. However, the front fuselage section 32, the rear fuselage section 33, and the intermediate fuselage section 34 may have different lengths in the front-to-rear direction. In this case, the length of the intermediate fuselage section 34 in the front-to-rear direction may be longer than the lengths of the front fuselage section 32 and the rear fuselage section 33 in the front-to-rear direction.

[0058] (3) In the above embodiment, the intermediate body section 34 is detachable from the front body section 32 and the rear body section 33. However, any one of the front body section 32, the rear body section 33, and the intermediate body section 34 may be detachable.

[0059] (4) In the above embodiment, the intermediate body portion 34 is divided into two parts in the circumferential direction of the body 30. However, the intermediate body portion 34 may be divided into three or more parts in the circumferential direction of the body 30.

[0060] (5) In the above embodiment, each intermediate fuselage component 46 is detachable from the front fuselage section 32 and the rear fuselage section 33. However, only one of the two intermediate fuselage components 46 may be detachable from the front fuselage section 32 and the rear fuselage section 33.

[0061] (6) In the above embodiment, the two intermediate fuselage components 46 are made of the same material and have the same arrangement of the handling teeth 29. However, the two intermediate fuselage components 46 may be made of different materials and have different arrangements of the handling teeth 29.

[0062] (7) In the above embodiment, four openings 50a are formed in the connecting member 48 (radial connecting portion 50). However, one to three or five or more openings 50a may be formed in the connecting member 48 (radial connecting portion 50).

[0063] (8) In the above embodiment, no inspection hatch is provided in the peripheral wall of the fuselage 30. However, an inspection hatch may be provided in the peripheral wall of the fuselage 30. [Industrial Applicability]

[0064] The present invention can be used not only for head-feeding combine harvesters but also for conventional combine harvesters. [Explanation of symbols]

[0065] 10 Threshing equipment 11 Thrusting body 28 Handling shaft 29 Teeth Treatment 30 Torso 32 Front fuselage (fuselage) 33 Rear fuselage (fuselage) 34 Intermediate fuselage (fuselage, detachable fuselage) 46 Intermediate fuselage component (fuselage component) 49 Fuselage connection part (circumferential connection member, front and rear connection member) 55 Connecting rod

Claims

1. A head-threshing combine equipped with a threshing device that threshes harvested stalks using a threshing drum, The threshing drum has a threshing drum shaft extending in the fore-and-aft direction of the machine body, and a body supported by the threshing drum shaft and having a plurality of threshing teeth attached to its outer periphery, The fuselage has a plurality of fuselage sections divided into front and rear sections, At least one of the plurality of body sections is a detachable body section that can be detached during maintenance, Among the plurality of body sections, body sections other than the detachable body section are non-detachable body sections that are not detached during maintenance, A head-detaching combine harvester in which the inner surface of the non-detachable body section is accessible through an opening formed by removing the detachable body section.

2. 2. The head-feeding combine harvester according to claim 1, wherein the non-detachable body portion is not divided in the circumferential direction but is continuous over the entire circumferential direction.

3. The head-feeding combine harvester according to claim 1, wherein a front-rear connecting member is provided inside the body to connect adjacent front and rear body sections among the plurality of body sections.

4. The head-detachable combine harvester according to claim 3, wherein the front and rear connecting members connect the detachable body portion and the non-detachable body portion.

5. 2. The head-feeding combine harvester according to claim 1, wherein the detachable body portion has a plurality of body portion constituent members divided in the circumferential direction of the body.

6. The head-feeding combine harvester according to claim 5, wherein the detachable body portion has a half-split structure divided into two in the circumferential direction.

7. 7. The head-feeding combine harvester according to claim 5, further comprising a circumferential connecting member that connects adjacent body constituent members in the circumferential direction among the plurality of body constituent members.

8. The head-feeding combine harvester according to any one of claims 5 to 7, wherein the plurality of body constituent members are formed of the same material and the arrangement of the handling teeth is the same.

9. the fuselage has, as the fuselage section, a front fuselage section located on the front side, a rear fuselage section located on the rear side, and an intermediate fuselage section located between the front fuselage section and the rear fuselage section, The head-feeding combine harvester according to any one of claims 1 to 8, wherein the front body portion, the rear body portion, and the intermediate body portion have approximately equal lengths in the front-rear direction.

10. A plurality of longitudinally oriented connecting rods extending in the longitudinal direction are provided at intervals in the circumferential direction inside the detachable body portion, The head-detaching combine harvester according to any one of claims 1 to 9, wherein when the detachable body portion is detached, an opening portion that opens radially is formed between the connecting rods.

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