JP2002305936A - Combine harvester - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a combine harvester enabling grain culms to be conveyed in a favorable posture by longitudinal conveyance members malaffected by no vertical action of a reaping section. SOLUTION: This combine harvester functions to deliver the reaped grain culms of a reaping section 7 via longitudinal conveyance members 11 and 12 onto a feed chain 5 and thresh the grain culms, wherein there is provided a coordinating link 77 for linking the respective tip sides of the longitudinal conveyance members 11 and 12 to a raising case 8 of the reaping section 7.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a combine for continuously cutting and threshing grain culms.

[0002]

Problems to be Solved by the Invention For example, Japanese Utility Model Publication No. 53-5
No. 2851, a transport chain for transporting the harvested culm of the reaping section to the threshing section is arranged on the side of the threshing section, and the culm from the transport chain is inherited by the feed chain in the left and right direction behind the handling cylinder, and reaping is performed. There is a technology that reduces the front and rear width of the cutting section and makes the cutting section more compact, but not only does it not easily prevent mutual interference between the cutting section that can be raised and lowered and the transport chain and simplifies the drive structure of the raising case. However, there have been inconveniences such as the interference between the transfer chain and the feed chain interfering with the uncut culm, and the fact that the cutting blade crank travels above the cutting blade, so that the culm and weeds are easily caught by the cutting blade crank.

[0003]

SUMMARY OF THE INVENTION Accordingly, the present invention relates to a combine harvester in which a harvested culm of a cutting section is threshed by being passed to a feed chain via a vertical conveying member. A link is provided to connect the sides of the cutting unit, and when the mowing unit is raised and lowered, the tip side of the vertical conveying member is also raised and lowered by the amount of the raising and lowering to prevent inconvenience such as occurrence of disturbance in the grain culm conveying posture. Thus, the accuracy of conveying the culm is improved.

Further, in a combine provided with a grain stalk raking wheel behind the raising case, the raising case is raised by a raking wheel, and the raising case is interlocked and connected via a driving pipe to be raised by the driving force of the raking wheel. In addition to providing the drive of the case, the drive system of the raising case and the scraping wheel is simplified, and the compaction of the reaping unit can be easily performed.
It also improves the support strength of the scraping foil.

Further, in a combine for threshing by transferring the harvested grain culm of the cutting section to a feed chain in the left-right direction via a vertical conveying member, the rear end side of the side divider is brought close to a position where the vertical conveying member and the feed chain are connected. By extending the feed culm from the vertical conveying member to the feed chain, it is possible to prevent inconvenience such as interference of the stock side with the uncut culm and maintain the proper conveying posture of the conveyed culm.

[0006] Furthermore, a cutting blade crank for reciprocatingly driving the cutting blade is provided, and the driving locus of the cutting blade crank is provided so as to project up and down from the cutting blade. Is minimized, and proper driving of the cutting blade is easily enabled.

[0007]

Embodiments of the present invention will be described below in detail with reference to the drawings. 1 is an overall side view, FIG. 2 is a plan view of the same,
FIG. 3 is a front view of the same. In the figure, reference numeral 1 denotes a pair of left and right traveling crawlers mounted on a track frame 2, 3 denotes a handling drum 4, a feed chain 5, and an oscillating sorter 6. Is a harvesting unit having a raising case 8 and a raking mechanism 9 and a cutting blade 10 for two rows, and a stock transport chain 1 which is a vertical transport member on the left side of the threshing unit 3.
Grain stalk transport path 13 formed by 1 and ear tip tine 12
Is provided. Reference numeral 14 denotes a driver's cab provided with a step 15 for operator's boarding, a driver's seat 16 for seating, and a round steering handle 17, reference numeral 18 denotes a forward / reverse traveling speed change lever provided on the left side of the driver's seat 16, and reference numeral 19 denotes a gear from the threshing unit 3. A paddy tank into which grains are fed by a fryer cylinder 20, a cutter 21 that cuts and discharges straw from the threshing unit 3, a engine 22, and a transmission case 23.

A cutting section 7 is provided in front of the threshing section 3 and the cutting grain culm of the cutting section 7 is fed to the threshing section 3 with respect to the transport direction of the harvesting grain culm transport path 13, that is, the machine body traveling direction. The center of the handling cylinder 4 of the threshing unit 3 is inclined at approximately 90 degrees in plan view, and the waste straw is sent out to the cutter 21 by the feed chain 5 extending in parallel behind the handling cylinder 4, eliminating the need for the conventional straw chain. To reduce the weight by simplifying the transport mechanism,
A threshing unit 3 is provided substantially at the center of the fuselage, and the heavy and heavy parts are harvested on the left and rear sides of the handling drum 4 substantially at the center of the fuselage. The feed chain 11 and the feed chain 5 for conveying the culm are extended so as to reduce the size of the machine and improve the weight balance of the machine.

[0009] The cutting section 7 for raising the uncut crop culm.
The upper end side of the raising case 8 is provided to be inclined leftward, and the step 15 and the driver's seat 16 on which the operator rides are arranged at a low position near the center of the machine body on the upper right side of the cutting width of the reaper 7, and the operation with the reaper 7 is performed. The left and right installation width of the seat 16 is reduced to improve the right and left weight balance of the fuselage and to reduce the size of the machine body. The driver's seat 16 is provided at an angle to the side opposite to the driver's seat 16, the driver's seat 16 is provided at a low position above the reaper 7, and the raising case 8 is arranged close to the left side of the step 15 on which the driver gets on, and The center of gravity of the aircraft, where no workers are on board, is set at the center of the aircraft, eliminating the problem of the truck bed tilting due to unbalanced load when loaded on the truck bed, and using a small truck with a small loading weight It is configured to stabilize better transport.

Further, an operator's boarding step 15 is disposed above the right side of the cutting blade 10 of the cutting unit 7, and the cutting blade 10 and the step 15 are wrapped in a plan view. To make it smaller,
In addition, the operator is mounted near the center of the fuselage to improve the right and left weight balance of the fuselage, a driver's seat 16 is provided in the right half of the left and right crawler 1 installation width, and a two-row raising case 8 is provided in the left half. Right next to step 15 for passengers to board
An elevating case 8 is provided upright to reduce the lateral width of the fuselage and shorten the longitudinal length of the fuselage, thereby reducing the size and weight and improving the weight balance of the fuselage.

As shown in FIGS. 4 to 6, a machine frame 24 for integrally fixing the left and right track frames 2 to the lower end thereof is erected between the left and right traveling crawlers 1, and the machine frame such as the handle drum 4 and the feed chain 5 is provided. Threshing unit 3 attached to 24
And a lifting fulcrum shaft 26 forming a single-shaft cutting case is detachably fixed to the left and right bearing brackets 25 at the front end of the machine frame 24 via left and right bearings 25a.

A cutting triaxial case 29 is connected to the lifting fulcrum shaft 26 by a cutting biaxial case 27 and a pipe frame 28.
8 prevents the cutting unit 7 from swinging (laterally oscillating) in the left-right direction, and connects a weeding frame 31 provided with a weeding plate 30 to the cutting triaxial case 29.

Further, a square pipe frame 32 is connected between the right side of the cab 14 and the right weeding frame 31, and a parallel link 33 is formed by the cutting two-axis case 27 and the pipe frame 32 so as to extend in the front-rear direction. The mowing unit 7 that can move the mowing unit 7 with a small movement can be moved up and down.
The piston rod 36 of the lifting cylinder 34 is connected to a connection frame 35 connecting the shaft case 27 and the pipe frame 28, and the mowing unit 7 is moved up and down by drive control of the lifting cylinder 34.

As shown in FIGS. 7, 8, and 10, the scraping mechanism 9 includes a pair of left and right scraping wheels 37 and 38. And a left scraping wheel 38 meshing with a right scraping wheel 37 is provided on the driven side, and a single cutting shaft 3 is mounted on the lifting fulcrum shaft 26, the two cutting shafts and the three-axis cases 27 and 29, respectively.
9, the second shaft 40 and the third shaft 41 are interpolated, and the drive shaft 44 and the belt transmission system 45
Through the second reduction conveyor shaft 46 and the conveyor shaft 4
6 is connected to a cutting single shaft 39 via a belt transmission system 47, and the cutting single shaft 39 is connected to a cutting 2-shaft 40 via a bevel gear 48, and the cutting 2-shaft 40 is connected to a cutting 3-shaft 41 via a bevel gear 49. Then, the right scraping wheel 37 is attached to the cutting triaxial shaft 41 via the worm 50 and the worm wheel 51.
Of the right scraping wheel 3
7 is driven. In addition, 53 is a No. 1 conveyor shaft, 54 is a frying shaft of the fryer cylinder 20, and 55 is a fan drive shaft of a suction and exhaust fan 56.

As shown in FIGS. 6 and 8, a wheel drive shaft 52 is disposed at a rear side position with respect to the three cutting shafts 41.
A speed increasing chain case 57 for driving the right raising case 8a is provided above the right scraping wheel 37, and the right raising case 8 is provided.
The compaction of the mowing part 7 in which the lower end side of the right raising drive pipe 59 connected to the upper end side of the a through a bevel case 58 is connected to the upper surface of the chain case 57 to prevent interference between the scraping wheel 37 and the raising drive pipe 59 The right-raising drive shaft 6 inserted into the right-raising drive pipe 59
The speed increase sprockets 61 and 62 and the chain 63 for interlocking the wheel drive shaft 52 and the wheel drive shaft 52 are provided inside the chain case 57, and the left side surface 57 a of the chain case 57 is prevented from winding the grain stem around the right raising drive pipe 59. It is provided so as to act as a guide, so that the number of parts and the weight can be reduced. The left raising drive shaft 65 of the left raising driving pipe 64 for driving the left raising case 8b is directly linked to the left end of the trimmer 41 via a bevel gear 66.

Further, as shown in FIG. 8, the drive case of the right scraping wheel 37 in which the worm 50 and the worm wheel 51 are provided is integrated with the drive case of the cutting blade 10 and is provided in an integrated drive case 67. A pair of bevel gears 70 for interlockingly connecting the cutting blade drive shaft 69 of the cutting blade crank 68 and the cutting trishaft 41 for driving the gear 10 are assembled together with the worm 50 and the worm wheel 51 into the drive case 67, The cutting blade 10 is driven from the front side of the trimmer 41 and the right scraping wheel 37 is driven from the rear side.
The drive of the cutting blade 10 is taken out to make the drive structure of the cutting blade 10 small and compact, and the size of the scraping wheel 37 can be increased to improve the scraping performance.

As shown in FIG. 9, the movable blade 7 of the cutting blade 10
1 includes a crank receiving body 73 engaged and connected to a driving roller 72 of a cutting blade crank 68, and
9 is provided at a height position substantially on the front extension line, so that the upper and lower margins A, which are the driving trajectory of the cutting blade crank 68, protrude up and down from the cutting blade 10 and the fixed receiving blade 74 of the cutting blade 10
The height B between the upper surface and the maximum height of the receiving body 73 is kept to a minimum, and the protrusion of the receiving body 73 protruding above the cutting blade 10 is reduced, so that grain culm and weeds are hooked on the receiving body 73. It is configured to reduce such inconveniences as possible.

As shown in FIG. 4 and FIG.
The transfer tine 1 and the transfer tine 12 are integrally connected at the intermediate portion by a guide member 74, and a transfer drive case 76 on the rear end side is rotatably supported by a handle cylinder bearing case 75 fixed to the threshing left side surface of the machine frame 24. The tip of the transport tine 12 is connected to the left raising case 8b via a link 77, and a long and short culm adjusting electric depth motor 78 is provided in the bevel case 58 of the left raising case 8b. A coupling member 8 that rotatably supports the distal end side of the screw shaft 79 on a bearing member 80 on the rear surface of the left raising case 8 b and that is coupled to the screw shaft 79.
1 and the transport tine 12 are linked by the link 77 via a link shaft 82, and when the cutting unit 7 is raised and lowered, the transport chain 11 and the tine 12 are raised or lowered by the amount of the raising and lowering, and the grain culm transporting posture Of the transport chain 11 and the tine 12 without the need for a balance spring and the like. It is configured to be.

The right weeding frame 31 supports the front end of the side divider 83, and the frame mounting member 85 on the outer surface of the engine cover 84 on the rear side of the machine supports the rear extending end of the divider 83. The splitter attachment members 86 and 87 provided at the middle part of the divider 83 and the rear upper part of the outer surface of the engine cover 84 respectively support both ends of the culm guide rod 88 in a substantially slanted manner with the front low and the rear high. The culm guide rod 88 is provided on the left side with a substantially middle portion facing the culm guide rod 88. At the time of passing the culm from the vertical conveying chain 11 and the tine 12 to the feed chain 5, the stock interferes with the uncut culm and conveys the culm culm. The configuration is such that inconvenience such as occurrence of disturbance in the posture is eliminated.

FIG. 11 shows an example of a configuration in which the drive unit of the cutting blade 10 is provided at the right side of the machine body.
An eccentric ring 91 is provided at the right end of the cutting blade 10 via a crank plate 89 and an eccentric shaft 90, and one end of the cutting blade 10 is engaged and connected to the movable blade 71 of the cutting blade 10 so as to swing about an arm shaft 92. The ring 91 is engaged and connected to the other end of the arm 93, and the rotational movement locus of the cutting trishaft 41 is changed into a forward and backward movement locus by the eccentric wheel 91, and the cutting blade drive arm 93 is changed into a left-right reciprocating movement. It is configured to drive the cutting blade 10. The triaxial case 39 is shortened to reduce the weight, and the driving unit of the cutting blade 10 is arranged on the right side of the machine body, so that the driving unit of the cutting blade 10 does not hinder the transportation of the grain stalk. 7 is configured to be compact so that the body can be easily reduced in size and weight.

[0021]

As is apparent from the above embodiments, the present invention is directed to a combine harvester in which the harvested culm of the mowing section 7 is transferred to the feed chain 5 via the vertical conveying members 11 and 12 and threshed. The vertical transport members 11 and 12 are
Is provided with a linking link 77 for connecting the leading ends of the vertical transport members 11 when the cutting unit 7 is raised and lowered.
The tip side of 12 is also raised and lowered by an amount corresponding to the upward and downward movement, thereby preventing inconvenience such as occurrence of disturbance in the cereal culm conveying posture and improving the corn culm conveying accuracy.

Further, in a combine provided with a grain stalk scraping wheel 37 behind the raising case 8a, the scraping foil 3 is used.
7, the case 8a is interlocked and connected via the drive pipe 59, and the case 8a is driven by the driving force of the scraping wheel 37. Therefore, the case 8a and the scraping wheel 37 are driven. In addition to simplifying the drive system of the above, the compaction of the mowing unit 7 can be easily performed, and the support strength of the scraping wheel 37 can be improved.

Further, in a combine for threshing the harvested grain culm of the cutting section 7 by passing it through the feed chain 5 in the left-right direction via the vertical conveying members 11 and 12, the vertical conveying members 11 and 12 are used.
And the rear end of the side divider 83 is extended to near the transfer position of the feed chain 5, so that when the cereal stem is transferred from the vertical conveying members 11 and 12 to the feed chain 5,
It is possible to prevent an inconvenience such that the stock side interferes with an uncut culm and maintain the proper conveyance posture of the conveyed grain culm.

Further, since a cutting blade crank 68 for reciprocatingly driving the cutting blade 10 is provided, and the driving locus A of the cutting blade crank 68 is projected upward and downward from the cutting blade 10, the grain culm of the cutting blade crank 68 is formed. Thus, it is possible to minimize the hooking of the cutting blade 10 against weeds and the like, and to easily enable appropriate driving of the cutting blade 10.

[Brief description of the drawings]

FIG. 1 is an overall side view of a combine.

FIG. 2 is a plan view of the same.

FIG. 3 is a front view of the same.

FIG. 4 is a side view of the reaper.

FIG. 5 is a plan view of a reaper.

FIG. 6 is an explanatory side view of the cutting unit.

FIG. 7 is an explanatory plan view of the reaper.

FIG. 8 is an explanatory sectional view of a drive case of the scraping wheel.

FIG. 9 is an explanatory side view of the cutting blade.

FIG. 10 is an explanatory diagram of a mowing drive system.

FIG. 11 is a modified explanatory view of the cutting blade drive.

[Explanation of symbols]

 Reference Signs List 5 feed chain 7 cutting section 8.8a raising case 11 transport chain (vertical transport member) 12 transport tine (vertical transport member) 37 scraping wheel 59 raising drive pipe 68 cutting blade crank 77 linking link 83 side divider

──────────────────────────────────────────────────続 き Continued on the front page (51) Int.Cl. ⁷ Identification symbol FI Theme coat ゛ (Reference) A01D 67/00 A01D 67/00 DF Term (Reference) 2B076 AA03 CA01 CA10 CA18 CA19 2B081 AA01 BB05 BB11 CC01 DB02 DD05 DD57 EB02 EB16 2B382 GA03 GA09 GC02 GC03 GC04 GC21 HA01 HA12 HB02 HH13 HH22

Claims (4)

[Claims] 1. A combine harvester in which a harvested culm of a reaping unit is threshed by being passed to a feed chain via a vertical conveying member.
A combine which is provided with a link for connecting a leading end side of a vertical conveying member to a raising case of a mowing part. 2. A combine equipped with a grain squeezing wheel behind a raising case, wherein the stalk is raised by a driving force of the squeezing wheel by raising the stalk foil and raising the case via a driving pipe so that the case is interlocked. A combine provided to drive the case. 3. In a combine harvester, in which a harvested culm of a cutting section is transferred to a feed chain in the left-right direction via a vertical conveying member and threshing is performed, the rear end side of the side divider is brought close to the transfer position of the vertical conveying member and the feed chain. A combine that has been extended. 4. A combine having a cutting blade crank for reciprocatingly driving a cutting blade, wherein a driving locus of the cutting blade crank is provided so as to project up and down from the cutting blade.