CN108200803B

CN108200803B - Harvester

Info

Publication number: CN108200803B
Application number: CN201711372446.7A
Authority: CN
Inventors: 山内一树; 山本洋也
Original assignee: Kubota Corp
Current assignee: Kubota Corp
Priority date: 2016-12-20
Filing date: 2017-12-19
Publication date: 2022-04-26
Anticipated expiration: 2037-12-19
Also published as: JP2018099074A; JP6861023B2; CN108200803A; KR102557143B1; KR20180071950A

Abstract

Provided is a harvester which enables an operator to easily access a harvesting driving shaft. The harvester is provided with: a harvesting unit that harvests crops in a field; a harvesting drive shaft provided at a lower portion of the harvesting section and extending in a left-right direction of the machine body; a drive box (7) which houses a harvesting drive shaft; left and right straw-dividing rods (9) provided at left and right end portions of the harvesting portion and extending in the front-rear direction of the machine body; and left and right dividers provided at the front ends of left and right divider bars (9), wherein the divider bar (9) has a first portion (91) and a second portion (92), the front end of the first portion (91) supports the divider, the rear portion of the first portion (91) is supported by the front portion of the second portion (92), the rear portion of the second portion (92) is supported by a box end portion (7a) which is an end portion of the drive box (7) in the left-right direction of the machine body, and the second portion (92) is connected to any one of the first portion (91) and the box end portion (7a) in a state of being capable of being disconnected.

Description

Harvester

Technical Field

The present invention relates to a harvester including a harvesting portion for harvesting crops in a field, and left and right straw dividers provided at left and right ends of the harvesting portion and extending in a front-rear direction of a machine body.

Background

As such a harvester, for example, a harvester described in patent document 1 is known. The harvester includes a harvesting drive shaft (a "drive shaft" in patent document 1) provided at a lower portion of a harvesting unit (a "harvesting unit" in patent document 1) and extending in a left-right direction of a machine body, and a drive box (a "horizontal frame" in patent document 1) accommodating the harvesting drive shaft.

In this harvester, the left and right branch bars (in patent document 1, "vertical frames") are disposed adjacent to the outside of the drive box in the left-right direction of the machine body. The rear end portions of the left and right grain-dividing bars are supported by the case end portions, which are the end portions of the drive case in the left-right direction of the machine body, by being fastened by bolts from the outside in the left-right direction of the machine body.

In addition, the left and right crop stalks of the harvester are connected to each other via an intermediate frame extending in the left-right direction of the machine body. The intermediate frame is connected to the grain lifter via an auxiliary vertical frame extending in the front-rear direction of the machine body. In addition, a cutting device having a fixed knife and a movable knife is connected to the left and right straw-dividing rods.

In this harvester, the rotational driving force of the engine is transmitted to the grain lifter and the feeder (in patent document 1, referred to as a "conveyor") via the harvesting drive shaft.

Documents of the prior art

Patent document

Patent document 1: japanese unexamined patent publication No. 2012-231712

Disclosure of Invention

Technical problem to be solved by the invention

In the harvester described above, the harvesting drive shaft is housed in the drive case. Therefore, when the operator maintains the parts such as the harvesting drive shaft and the gears attached to the harvesting drive shaft, the operator needs to expose the end of the box and then approach the harvesting drive shaft in the drive box from the exposed end of the box.

Here, in the above-described harvester, the left and right crop-dividing bars are disposed adjacent to the outside of the driving box in the left-right direction of the machine body. The rear end portions of the left and right grain-dividing bars are supported by the box end portions by being fastened by bolts from the left and right outer sides of the machine body.

Therefore, in order to expose the box end, the operator needs to detach the branch straw from the harvesting portion after releasing the connection between the branch straw and the drive box.

However, in this harvester, as described above, both the left and right branch bars are connected to the grain lifting device and the harvesting device. Therefore, in order to detach the branch straw from the harvesting portion, it is necessary to detach not only the connection between the branch straw and the drive box but also the connection between the branch straw and the grain lifting device and the harvesting device.

Therefore, in this harvester, when the operator approaches the harvesting drive shaft, the work of exposing the box end requires a relatively large number of steps.

The invention aims to provide a harvester which enables an operator to easily access a harvesting driving shaft.

Means for solving the problems

The present invention is characterized in that a harvester includes:

a harvesting unit that harvests crops in a field;

a harvesting drive shaft provided at a lower portion of the harvesting section and extending in a left-right direction of the machine body;

a drive case that houses the harvesting drive shaft;

left and right crop dividing bars provided at left and right end portions of the harvesting portion and extending in a front-rear direction of the machine body; and

left and right dividers provided at front end portions of the left and right dividing bars, wherein,

the crop divider bar has a first portion and a second portion,

the front end of the first part supports the crop divider, and the rear part of the first part supports the front part of the second part,

the rear part of the second part is supported at the end part of the driving box in the left and right direction of the machine body, namely the box end part,

the second portion is coupled to both the first portion and the tank end portion in a state in which the coupling can be released.

According to the present invention, even when the first portion of the straw splitting bar is connected to various components such as the grain lifter and the harvester, only the second portion of the first portion and the second portion of the straw splitting bar can be detached from the harvesting portion. That is, only the portion of the branch straw supported by the end of the box can be easily detached from the harvesting portion.

Therefore, the operator can easily expose the end of the tank. This allows the operator to easily access the harvesting drive shaft.

Also, in the present invention, it is preferable that,

the first portion is provided in a state of not overlapping with the drive case in a side view.

According to this structure, only the second portion of the first portion and the second portion of the straw overlaps with the drive case in a side view. Therefore, the operator can easily expose the box end portion only by detaching the second portion from the harvesting portion. This allows the operator to easily access the harvesting drive shaft.

Also, in the present invention, it is preferable that,

a power output mechanism mounted on the shaft end of the reaping drive shaft,

the drive case has an output case section that houses the power output mechanism,

the first portion is provided so as not to overlap with the output tank portion in a side view.

According to this structure, only the second portion of the first portion and the second portion of the straw overlaps with the output box portion in a side view. Therefore, the operator can easily expose the delivery box portion by simply detaching the second portion from the harvesting portion. This allows the operator to easily access the harvesting drive shaft and the power output mechanism.

Also, in the present invention, it is preferable that,

a box opening part is formed on the end surface of the output box part on the outer side of the machine body in the left and right directions,

the second portion connected to the tank end portion overlaps the tank opening portion in a side view.

According to this configuration, the operator can access the box opening portion only by detaching the second portion from the harvesting portion. This allows the operator to easily access the harvesting drive shaft and the power output mechanism.

Also, in the present invention, it is preferable that,

the driving box is provided with a box main body part extending along the left and right directions of the machine body,

the output box part is configured in a state of being adjacent to the outer side of the left and right directions of the machine body of the box main body part,

the output tank unit and the tank body unit are connected to each other in a releasable state,

the second portion connected to the tank end portion overlaps the output tank portion in a side view.

According to this configuration, the operator can access the delivery box section only by detaching the second portion from the harvesting section. Further, the operator can detach the output box section from the drive box by simply approaching the output box section.

That is, according to this configuration, the operator can easily detach the output box section from the drive box.

Also, in the present invention, it is preferable that,

the harvesting part is provided with a cutting knife for harvesting crops in the field,

the power take-off mechanism has an input shaft connected to the harvesting drive shaft via a bevel gear,

the rotational driving force of the harvesting drive shaft is transmitted to the cutter via the input shaft.

Bevel gears are relatively high frequency components that require replacement. Therefore, if the bevel gear is configured to be difficult for an operator to access, a large number of man-hours are required to replace the bevel gear.

Here, according to the above configuration, the operator can easily access the bevel gear. Therefore, according to the above configuration, the operator can easily replace the bevel gear.

Drawings

Fig. 1 is a top view of a combine harvester.

Fig. 2 is a perspective view of the harvesting section.

Fig. 3 is a top view of the harvesting portion.

Fig. 4 is a right side view of the harvesting portion.

Fig. 5 is a longitudinal sectional front view of the drive case.

Fig. 6 is an exploded perspective view showing a coupling structure of the outside straw-dividing bar and the drive box on the left side of the machine body.

Fig. 7 is an exploded perspective view showing a coupling structure between the outer straw-dividing bar and the drive box on the right side of the machine body.

Fig. 8 is an enlarged view of the right side of the harvesting portion.

Fig. 9 is a left side view of the harvesting portion.

Fig. 10 is a bottom view showing the structure of the front part of the harvesting part.

Fig. 11 is a vertical cross-sectional side view showing a mounting structure of the cutter blade.

Fig. 12 is a cross-sectional plan view showing the attachment structure of the cutter.

Fig. 13 is a perspective view showing a mounting structure of the cutter blade.

Description of the reference numerals

1 combine harvester (harvester)

2 reaping part

7 drive box

7a box end

8 reap the drive shaft

9 outside straw (straw)

11 outer divider (divider)

13 power output mechanism

14 input shaft

15 first bevel gear (bevel gear)

16 second bevel gear (bevel gear)

23 cutting knife

71 first output box part (output box part)

71a first case opening part (case opening part)

72 second output box part (output box part)

73 box main body

91 first part

92 second part

Detailed Description

A mode for carrying out the present invention will be described based on the drawings. In the following description, the direction of arrow F shown in fig. 1, 3, 4, and 8 to 11 is referred to as "front", the direction of arrow B is referred to as "rear", the direction of arrow L shown in fig. 1, 3, 5, and 10 is referred to as "left", and the direction of arrow R is referred to as "right". The direction of arrow U shown in fig. 4, 5, 8, 9, and 11 is referred to as "up", and the direction of arrow D is referred to as "down".

[ integral structure of combine harvester ]

As shown in fig. 1, a combine harvester 1 of a half-feed type (corresponding to a "harvester" of the present invention) is provided with a harvesting unit 2 at a front portion of a body thereof. The harvesting unit 2 harvests grains (corresponding to "crops" of the present invention) in a field.

In this way, the combine harvester 1 includes the harvesting unit 2 that harvests the crops in the field.

A conveying device H is arranged behind the harvesting part 2. In addition, a steering unit 3 is provided on the front right side of the combine harvester 1. An engine (not shown) as a power source of the combine harvester 1 is provided below the cab 3. The driver unit 3 has a driver seat 3 a.

In addition, the harvesting section 2 has a grain lifter 30 for lifting grain stalks (corresponding to "crops" of the present invention) planted in a field.

As shown in fig. 1, a threshing device 4 is provided on the left side of the rear part of the combine harvester 1. In addition, a grain tank 5 is provided on the rear right side in the combine harvester 1.

The grains harvested by the harvesting unit 2 are transported to the threshing unit 4 by the transporting unit H. In the threshing device 4, the grains are subjected to a threshing process. Grains obtained by the threshing process are stored in a grain tank 5. The grains stored in the grain tank 5 are discharged to the outside of the machine by the grain discharging device 6 as needed.

The combine harvester 1 can be driven by a crawler travel device (not shown) located at a lower portion of the machine body.

[ Structure of harvesting part ]

As shown in fig. 2 to 4, a drive box 7 is provided at a lower portion of the harvesting section 2. The drive box 7 extends in the left-right direction of the machine body.

As shown in fig. 5, a harvesting drive shaft 8 is disposed inside the drive box 7. That is, the drive box 7 houses the harvesting drive shaft 8. In addition, a harvesting drive shaft 8 is provided at a lower portion in the harvesting portion 2. Moreover, the harvesting drive shaft 8 extends in the left-right direction of the machine body.

In this way, the combine harvester 1 includes the harvesting drive shaft 8 provided at a lower portion of the harvesting unit 2 and extending in the left-right direction of the machine body. The combine harvester 1 further includes a drive box 7 for housing the harvesting drive shaft 8.

As shown in fig. 2 to 4, left and right outer straw dividers 9 (corresponding to "straw dividers" in the present invention) are provided at left and right ends of the harvesting section 2. The left and right outside straw-dividing rods 9 extend in the front-rear direction of the machine body.

In this way, the combine harvester 1 includes left and right outer straw dividers 9 provided at both left and right ends of the harvesting unit 2 and extending in the front-rear direction of the machine body.

Five inner grain dividing bars 10 are arranged between the left and right outer grain dividing bars 9. The inner straw dividers 10 extend in the front-rear direction of the machine body respectively. Further, five inner straw 10 are arranged at intervals in the left-right direction of the machine body.

Left and right outer dividers 11 (corresponding to the "dividers" of the present invention) are provided at the front ends of the left and right outer dividers 9. Further, inner dividers 12 are provided at the front ends of the five inner crop-dividing bars 10, respectively.

In this way, the combine harvester 1 includes the left and right outer dividers 11 provided at the front end portions of the left and right outer dividing bars 9.

As shown in fig. 2 to 4, the outer straw-dividing bar 9 has a first portion 91 and a second portion 92. The outer crop divider 11 is supported by the front end of the first portion 91. Also, the rear of the first portion 91 is supported at the front of the second portion 92.

Thus, the front end of the first portion 91 is supported by the outer crop divider 11, and the rear of the first portion 91 is supported by the front of the second portion 92.

In addition, the rear portion of the second portion 92 is supported by the tank end portion 7 a. The case end portion 7a is an end portion in the left-right direction of the machine body of the drive case 7.

Thus, the rear portion of the second portion 92 is supported by the case end portion 7a, which is the end portion of the drive case 7 in the left-right direction of the machine body.

As shown in fig. 6 and 7, the first portion 91 and the second portion 92 are coupled to each other by a bolt b 1. The operator can release the connection between the first portion 91 and the second portion 92 by loosening and removing the bolt b 1.

As shown in fig. 5 to 7, the second portion 92 is connected to the box end portion 7a by a bolt b 2. The operator can release the connection between the second portion 92 and the box end portion 7a by loosening and removing the bolt b 2.

Thus, the second portion 92 is coupled to both the first portion 91 and the tank end portion 7a in a state where the coupling can be released.

As shown in fig. 2 to 4, an intermediate frame 21 is provided at a lower portion of the harvesting portion 2. The intermediate frame 21 is a square tubular member extending in the left-right direction of the machine body. Both ends of the intermediate frame 21 are connected to the first portions 91 of the left and right outside straw-dividing bars 9, respectively.

The rear end of the inner straw 10 is fixed to the upper surface of the intermediate frame 21. As shown in fig. 2, the second and fourth inner straw 10 from the right among the five inner straw 10 are connected to the harvesting frame 22. The harvesting frame 22 supports a grain lifter 30 (see fig. 1 and 4).

As shown in fig. 2 to 4, the harvesting section 2 has a cutter 23. The cutter blade 23 is mounted to the front of the middle frame 21. The cutter 23 has a fixed blade 23a (see fig. 10) and a movable blade 23b, and is configured to cut the straw in the field.

In this way, the harvesting portion 2 has a cutter 23 for harvesting the agricultural product in the field.

Further, with this configuration, the first portions 91 of the left and right outside grain-dividing bars 9 are connected to the grain-lifting device 30 via the intermediate frame 21, the inside grain-dividing bar 10, and the harvesting frame 22. The first portions 91 of the left and right outside straw dividers 9 are connected to the cutter blades 23 via the intermediate frame 21.

As shown in fig. 5, power output mechanisms 13 are attached to the left and right shaft ends of the harvesting drive shaft 8, respectively. The drive box 7 includes a first output box section 71 (corresponding to the "output box section" of the present invention) and a second output box section 72 (corresponding to the "output box section" of the present invention).

The power output mechanism 13 located on the left side of the machine body is housed in the first output box section 71. The power output mechanism 13 on the right side of the machine body is housed in the second output box section 72.

In this way, the combine harvester 1 includes the power output mechanism 13 attached to the shaft end of the harvesting drive shaft 8. The drive box 7 includes a first output box section 71 and a second output box section 72 that house the power output mechanism 13.

As shown in fig. 5, the left and right power output mechanisms 13 each include an input shaft 14, a first bevel gear 15 (corresponding to the "bevel gear" of the present invention), and a second bevel gear 16 (corresponding to the "bevel gear" of the present invention).

The left and right input shafts 14 extend in a direction orthogonal to the harvesting drive shaft 8. Left and right first bevel gears 15 are attached to left and right shaft ends of the harvesting drive shaft 8, respectively. Further, a second bevel gear 16 is attached to the lower end of the input shaft 14. The first bevel gear 15 and the second bevel gear 16 are engaged with each other.

That is, the input shaft 14 is connected to the harvesting drive shaft 8 via a first bevel gear 15 and a second bevel gear 16.

In this way, the power take-off mechanism 13 has an input shaft 14 connected to the harvesting drive shaft 8 via a first bevel gear 15 and a second bevel gear 16.

As shown in fig. 5, the harvesting section 2 has a first transmission shaft 17. The first transmission shaft 17 extends in a direction orthogonal to the harvesting drive shaft 8. The first transmission shaft 17 is housed in the first transmission case 17C.

A third bevel gear 18 is attached to the lower end of the first transmission shaft 17. The rotational driving force from the engine is transmitted to the upper end side of the first transmission shaft 17. Further, a fourth bevel gear 19 is attached to an intermediate portion of the mowing drive shaft 8. The third bevel gear 18 and the fourth bevel gear 19 are engaged with each other.

With this configuration, the harvesting drive shaft 8 is connected to the first drive shaft 17 via the third bevel gear 18 and the fourth bevel gear 19. The rotational driving force from the engine is transmitted to the harvesting drive shaft 8 via the first transmission shaft 17, the third bevel gear 18, and the fourth bevel gear 19.

As shown in fig. 4, the upper end side of the input shaft 14 is connected to a cutter drive mechanism 24. As shown in fig. 3, the cutting blade drive mechanism 24 is connected to the movable blade 23b of the cutting blade 23.

With this configuration, the rotational driving force of the mowing drive shaft 8 is transmitted to the input shaft 14 via the first bevel gear 15 and the second bevel gear 16. Then, the rotational driving force of the input shaft 14 is transmitted to the movable knife 23b of the cutting knife 23 via the cutting knife driving mechanism 24.

In this way, the rotational driving force of the mowing drive shaft 8 is transmitted to the cutting knife 23 via the input shaft 14.

According to the above configuration, the grain stalks in the field are divided by the outer divider 11 and the inner divider 12 as the combine harvester 1 travels. Then, the divided grain stalks are cut by a cutter 23.

In addition, as shown in fig. 5, the harvesting section 2 has a second transmission shaft 27. The second transmission shaft 27 extends in a direction orthogonal to the harvesting drive shaft 8. The second propeller shaft 27 is housed in the second propeller shaft case 27C.

A fifth bevel gear 28 is mounted to the lower end of the second transmission shaft 27. The upper end side of the second transmission shaft 27 is connected to the conveying device H and the grain lifter 30. Further, a sixth bevel gear 29 is attached to the left end of the mowing drive shaft 8. The sixth bevel gear 29 is disposed adjacent to the right side of the first bevel gear 15. The fifth bevel gear 28 and the sixth bevel gear 29 are engaged with each other.

With this configuration, the harvesting drive shaft 8 is connected to the second transmission shaft 27 via the fifth bevel gear 28 and the sixth bevel gear 29. The rotational driving force of the mowing drive shaft 8 is transmitted to the second propeller shaft 27 via the fifth bevel gear 28 and the sixth bevel gear 29. In addition, the rotational driving force of the second transmission shaft 27 is transmitted to the conveying device H and the grain lifter 30.

As shown in fig. 4 and 8, the first portion 91 on the right side of the machine body is provided so as not to overlap the drive box 7 and the second output box portion 72 in the side view. As shown in fig. 9, the first portion 91 on the left side of the body is provided so as not to overlap the drive box 7 and the first output box section 71 in a side view.

Thus, the first portion 91 is provided so as not to overlap the drive case 7 in a side view. In addition, the first portion 91 is provided so as not to overlap the first outlet tank unit 71 and the second outlet tank unit 72 in a side view.

As shown in fig. 5, 6, and 9, a first tank opening 71a (corresponding to a "tank opening" in the present invention) is formed in an end surface of the first output tank 71 on the outer side in the left-right direction of the machine body, and a first cover 71b is attached to cover the first tank opening 71 a.

In fig. 9, the second portion 92 located on the left side of the machine body is connected to the box end portion 7a (see fig. 6). The second portion 92 in this state overlaps the first tank opening 71a in side view.

Thus, a first tank opening 71a is formed in the first output tank 71 on the outer end surface in the left-right direction of the machine body. In addition, in a side view, second portion 92 connected to case end 7a overlaps first case opening 71 a.

As shown in fig. 5, the drive box 7 has a box main body 73 extending in the left-right direction of the machine body. The box main body 73 includes a first main body 73a, a second main body 73b, and a third main body 73 c. The first body 73a, the second body 73b, and the third body 73c extend in the left-right direction of the machine body.

The right end of the first body 73a and the left end of the second body 73b are coupled to each other by a bolt b 3. The right end of the second body 73b and the left end of the third body 73c are coupled to each other by a bolt b 4. The left end of the first body 73a is integrally formed with the first output tank 71.

The second output box section 72 is disposed adjacent to the outside of the box main body section 73 in the left-right direction of the machine body. More specifically, the second output tank unit 72 is disposed adjacent to the right side of the third body 73 c. The right end of the third body portion 73c and the left end of the second output tank portion 72 are coupled to each other by a bolt b 5. The operator can release the connection between the third body portion 73c and the second output tank portion 72 by loosening and removing the bolt b 5.

Thus, the second output tank 72 and the tank main body 73 are connected to each other in a releasable state.

In fig. 8, the second portion 92 located on the right side of the machine body is connected to the box end portion 7a (see fig. 7). The second portion 92 in this state overlaps the second outlet tank 72 in side view.

In this way, the second portion 92 connected to the tank end portion 7a overlaps the second outlet tank portion 72 in a side view.

According to the above-described configuration, the first section 91 of the outside straw splitting bar 9 is connected to various components such as the grain lifter 30 and the cutter blade 23, but only the second section 92 of the first section 91 and the second section 92 can be detached from the harvesting section 2. That is, only the portion of the outside branch straw 9 supported by the box end portion 7a can be easily detached from the harvesting portion 2.

Therefore, the operator can easily expose the box end 7 a. This allows the operator to easily access the harvesting drive shaft 8.

[ method of removing bevel gears ]

Hereinafter, a method of removing the first bevel gear 15 and the second bevel gear 16 will be described.

As shown in fig. 5, the lower end of the input shaft 14 on the left side of the machine body is supported by the inner wall of the first output tank section 71 via a bearing 40. Further, a retaining circlip 41 for the bearing 40 is attached to the inner wall of the first output case portion 71.

Further, in the first output tank section 71, a second tank opening 71c is formed in a portion facing the lower end of the input shaft 14 and the bearing 40, and a second cover 71d is attached to cover the second tank opening 71 c.

When the operator detaches the first bevel gear 15 and the second bevel gear 16 on the left side of the machine body, the operator first loosens the bolt b2 to detach them, and releases the connection between the second portion 92 and the box end portion 7 a. The bolt b1 (see fig. 6) is loosened and removed, thereby releasing the connection between the second portion 92 and the first portion 91. Next, after the second portion 92 is detached from the box end portion 7a, the first cover 71b and the second cover 71d are detached.

Then, after the circlip 41 is removed, the input shaft 14 is struck with a hammer or the like from the side of the second case opening portion 71 c. Thus, the input shaft 14 is disengaged from the bearing 40 and the second bevel gear 16. Then, the bearing 40 and the second bevel gear 16 are removed. Finally, the first bevel gear 15 is extracted from the harvesting drive shaft 8.

With the above-described configuration, the first bevel gear 15 and the second bevel gear 16 on the left side of the machine body can be easily removed.

In addition, according to the above-described configuration, the first bevel gear 15 and the second bevel gear 16 positioned on the right side of the machine body can be easily removed in the same manner.

[ mounting structure of cutter ]

The following describes an attachment structure of the cutter blade 23.

As shown in fig. 10, an outer straw-dividing plate 9a is provided at a lower portion of the outer straw-dividing bar 9. Further, an inner straw-dividing plate 10a is provided at a lower portion of the inner straw-dividing bar 10.

As shown in fig. 4, the outer grass-dividing plate 9a is a plate-like member projecting downward. As shown in fig. 11 and 13, the inner grass-dividing plate 10a is also a plate-like member that protrudes downward.

As shown in fig. 11, the cutter blade 23 is supported by the intermediate frame 21 via a hinge portion 31. With this configuration, the cutter blade 23 can swing up and down about the axis P1 along the left-right direction of the machine body.

Further, a fixing arm 32 is connected to the cutter blade 23. The fixing arm 32 extends upward from the blade 23 and is bent forward. In addition, one fixing arm 32 is provided at each of the five inner straw dividers 10 at a position corresponding to the position of the second and fourth inner straw dividers 10 from the right. That is, two fixing arms 32 are connected to the cutter blade 23.

As shown in fig. 11 to 13, a support plate 33 is provided between the inner straw 10 and the fixing arm 32. As shown in fig. 12, the support plate 33 is fixed to the outer peripheral surface of the inner straw 10 by welding.

As shown in fig. 12, a straw opening 10b is formed in the inner straw 10. A nut n1 is fixed to the support plate 33 by welding. Further, the support plate 33 is arranged so that the nut n1 enters the stalk opening 10 b.

A bolt hole 33a is formed in the support plate 33 at a position corresponding to the nut n 1. As shown in fig. 11 to 13, an elongated hole 32a is formed in the distal end of the fixing arm 32.

The fixing arm 32 and the support plate 33 are coupled to each other by a bolt b6 and a nut n 1. As shown in fig. 12, the bolt b6 is fastened to the nut n1 by the long hole 32a and the bolt hole 33 a.

That is, the cutter 23 is fixed to the inner-side straw 10 via the fixing arm 32 and the support plate 33. Then, the posture of the cutter 23 is fixed.

As shown in fig. 11 to 13, a straw-separating support member 34 is connected to the upper surface of the intermediate frame 21. As shown in fig. 12, the straw support member 34 holds the rear end portion of the inner straw 10 from the left and right. The rear end of the inner straw 10 is fixed to the straw support member 34 by welding.

That is, the rear end portion of the inner branch shaft 10 is fixed to the upper surface of the intermediate frame 21 via the branch shaft supporting member 34.

[ other embodiments ]

(1) The number of the inner straw 10 is not limited to five. The number of the inner straw 10 may be four or less, or six or more. In addition, the inner straw 10 may not be provided.

(2) The number of the fixing arms 32 is not limited to two. The number of the fixing arms 32 may be one, or three or more. In addition, when the cutting blade 23 is provided so as not to be vertically swingable, the fixing arm 32 may not be provided.

(3) The tank body 73 may be formed of a single member.

(4) The tank body 73 and the first output tank 71 may be formed separately from each other.

(5) The tank body 73 and the second output tank 72 may be integrally formed.

(6) The first cover 71b may not be provided. In addition, the second cover 71d may not be provided.

(7) The first tank opening 71a may not be provided. The second tank opening 71c may not be provided.

Industrial applicability of the invention

The present invention can be applied to not only a semi-feeding type combine but also a general type combine, a corn harvester, and the like.

Claims

1. A harvester is provided with:

a harvesting unit that harvests crops in a field;

a drive case that houses the harvesting drive shaft;

left and right crop dividing bars provided at left and right end portions of the harvesting portion and extending in a front-rear direction of the machine body;

left and right dividers provided at front end portions of the left and right dividing bars;

the harvester is characterized in that,

the crop divider bar has a first portion and a second portion,

a front end portion of the first portion supports the crop divider, and an intermediate portion of the first portion is supported by a frame provided at a position further to the front side than the drive case, and a rear portion of the first portion is supported by a front portion of the second portion,

the second portion is provided so as to be supported by a box end portion, which is an end portion of the drive box in the left-right direction of the machine body, in a state in which a rear portion of the second portion covers the box end portion, and is coupled to only the first portion and the box end portion, and is coupled to both of the first portion and the box end portion in a state in which the coupling can be released,

by releasing the connection of the second portion to the first portion and the box end portion, the first portion is detached from the body without detaching the second portion, and the box end portion is opened.

2. A harvester according to claim 1,

the frame supports a cutter for harvesting the crop in the field.

3. A harvester according to claim 1 or 2,

4. A harvester according to claim 1 or 2,

a power output mechanism mounted on the shaft end of the reaping drive shaft,

5. A harvester according to claim 4,

6. A harvester according to claim 4,

7. A harvester according to claim 4,