JP2000092965A - Reaping apparatus of combine harvester - Google Patents

Abstract

PROBLEM TO BE SOLVED: To decrease the resistance of a stock base part in the transfer of culm reaped and collectively transferred by a reaping apparatus of a combine. SOLUTION: A reaping transmission case 5 having a reaping blade 6, a culm-raising apparatus 7, etc., is positioned in such a manner that the upper face A of the central mid-case 8 passing the base part of culm reaped and collectively transferred by the front-side reaping blade 6 is placed at a level lower than the upper face B of the right and left side cases 9 and nearly equal to or lower than the backward extension plane of the upper face C of the reaping blade 6.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a combine harvester, and more particularly, to reducing the transport resistance of the root end face of a harvested grain culm.

[0002]

SUMMARY OF THE INVENTION In a combine harvester, when a harvested culm is transferred to a transport device while being collected, a component such as a transmission case is projected upward from the rear side of the cutting blade device. This is likely to be the transport resistance of the end face of the stock. The present invention is intended to solve the above-described defects by the configuration of the mowing transmission case.

[0003]

According to the present invention, a cutting blade device 6 is provided.
And the cutting blade transmission case 5 equipped with a grain culm moving device 7 and the like. The lower side of the upper surface B of the side case 9 on both sides and the cutting blade device 6
The combine harvester is provided at substantially the same height as or lower than the rear extension surface of the upper surface C.

[0004]

The cutting blade device 6, the grain culm moving device 7, and the like are transmitted through the transmission mechanism of the cutting transmission case 5. The grain stalks harvested by the cutting blade device 6 are collected and sent to the mid case 8 at the center of the mowing transmission case 5, and the end face of the stock is conveyed rearward through the upper surface A of the mid case 8 part. .

The upper surface A of the mid case 8 is lower than the upper surface B of the left and right side cases 9 and has substantially the same height as the rear extension surface of the upper surface C of the front cutting device 6. Since it is provided at a lower position than the above, it can be configured with a simple configuration and a gentle slope, and the root end face of the cut cereal culm cut by the cutting blade device 6 is removed while the mid case 8 is being collected. The transport resistance due to the upper surface A of the portion can be reduced.

In addition, by forming the upper surface B of the side case 9 higher than the upper surface A of the mid case 8, the transmission mechanism to the cutting blade device 6 and the grain culling moving device 7 can be easily configured. .

[0007]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A combine vehicle body 1 has a crawler traveling device 15 and a rear end of a mowing elevating frame 2 of a mowing device 4 is provided on a front side of a suspension bracket 17 on a transmission case 16 in a lateral direction. And is lifted and lowered by a lift cylinder 20 which is provided between the bracket 19 below and the vehicle body 1 and which expands and contracts due to hydraulic pressure.

At the rear of the vehicle body 1, a threshing device 21 is mounted, receiving the supply of cereal stalks conveyed from the cereal stalk conveying device 22 of the reaper 4, and interlocking the lower feed chain 23 and the upper nip. While being held between the rods 24 and conveyed rearward, the spikes are fed into the threshing chamber 25 with a rotating drum and threshing.
The thresh is configured to be sorted on a swing sorting shelf or the like in the lower sorting chamber 26.

At the rear of the threshing device 21, a culm chamber 27 is provided.
, And can be focused and discharged by a dropper or the like while inheriting the threshed culms and transporting them backward. In addition, this culm room 27
A suction / dust generator is provided at a lower rear portion of the apparatus, and can suction and discharge the sorted dust to the outside of the apparatus. On the lateral side of the vehicle body 1, a cockpit 28 from the front, a cockpit 29 above the engine room, a grain tank 30 for frying out and storing the grains sorted in the sorting room 26, Glen tank 3
A vertical auger 31 for discharging grains discharged from the outside of the machine and a rotatable horizontal auger 32 are arranged and mounted.

The reaping device 4 includes a reaping transmission case 5 with a link mechanism 3 interposed at a lower front portion of the reaping lifting frame 2.
And a reciprocating cutting blade device 6 is provided at the front of the cutting transmission case 5 between the left and right weeding rods 33. The grain stem raising device 7 is supported by upper and lower support rods 34, 35, and a pair of left and right scraping star wheels 36, 37, a scraping rug belt 38, and the like are provided on the rear side of the grain stem raising device 7. Reference numeral 39 denotes a weeding plate attached to the front end of the weeding rod 33.

The cutting transmission case 5 includes a left and right cutting blade device 6.
A middle case 8 having a small diameter at a substantially central portion of the width, and a side case 9 having a large diameter connected to both left and right sides. The width of the mid case 8 is set to be low so as not to cause a conveyance resistance at the root of the culm to be cut and collected. The mid case 8 is coupled with the upper surface deviated downward with respect to the side case 9, and the
The upper surface A of the cutting blade device 6 is substantially the same as the rear extension surface of the upper surface C of the cutting blade device 6 or lower than the upper surface C.
In front of the center of the mid case 8 is a weeding rod 3 at the center.
The projecting rod 3 projects forward through the upper side of the cutting blade device 6. Reference numeral 40 denotes a stock guide plate protruding forward from the upper end of the mid case 8, and is also integrally connected to the intersection with the weeding rod 33 by welding.

The upper side of the side case 9 is formed to be higher than the rear extension surface of the upper surface C of the cutting blade device 6, so that it is difficult to limit the accommodation of the transmission mechanism to the moving device 7, the cutting blade device 6, and the like. I have. In mounting the cutting blade device 6 on the weeding rod 33 at both ends, a plate 82 fixed to the inner surface of the weeding rod 33 by welding or the like is overlapped on the upper surface of the cutter bar 66, and this overlapped part is bolted. Tighten it and fix it. Further, the plate 82 may be widened to a position overlapping the upper part of the front movable blade 62.

In this manner, the mounting surface of the cutting blade device 6 is widened so that the cutting blade device 6 is firmly mounted, and it is possible to reduce straw chips and mud accumulation in the mounting portion. The moving configuration of the mowing transmission case 5 by the link mechanism 3 includes a rotatable case 41 having a link pin 47 rotatable left and right at the lower end of the mowing elevating frame 2 and an outer end of a support arm 42 integrated in a lateral direction. And a rotating arm 44 that is rotatable with a link pin 43.

The inner side case 9 is rotatably connected to the front end of the turning case 41 by a pipe-shaped link pin 45, and the front end of the turning arm 44 is made up and down forked so that the outer side case 9 is connected. The link pins 46 are connected so as to be freely rotatable. Further, a pair of left and right rotating cases 41 and a rotating arm 44 are supported in a parallel link form, and the mowing transmission case 5 is set in a parallel state and rotated left and right to an offset position inside and outside the width of the vehicle body 1. The cutting position of the cutting device 4 with respect to the vehicle body 1 can be moved.

The operator can move the mowing device 4 by pushing and pulling a part of the mowing device 4 right and left, and can operate the lock mechanism separately to fix the moving position. A support rod 3 for supporting the lower part of the grain stem raising device 7
5 is attached to a mounting seat 48 at the outer end of the side case 9 and protrudes forward. In the support rod 35, a raising drive shaft 49 is provided, which is interlocked with a bevel gear from the transmission mechanism in the side case 9, and the sprocket 51 in the raising case 50 at the tip is interlocked with the chain 53 of the raising lug 52.
Drive.

The left and right large-diameter scraping star wheels 36
Are arranged symmetrically above the central part of the cutting blade device 6 and the mowing transmission case 5, and can rotate while engaging with each other. The outer scraping star wheel 36 is supported by a support case on the mounting seat 54 of the lower side case 9, and can be rotated in conjunction with a bevel gear from a transmission mechanism in the side case 9.

A pair of left and right small-diameter rake star wheels 37 are rotatably supported by a guide plate 55 mounted on the weeding rod 33 at the center in front of the rake star wheels 36. The left and right rake star wheels 37 are engaged with each other, and are also engaged with the opposed large-diameter rake star wheels 36 on the front side. By the occlusal rotation of these scraped star wheels 36, 37, the culm culled along the left and right sides of the guide plate 55 is moved between the occlusal portions with the raked star wheel 36 by the rotation of the scraped star wheel 37. It is scraped, cut by the cutting blade device 6, and further collected between the left and right scraping star wheels 36 on the rear side of the guide plate 55,
The bite is conveyed to the rear.

While these large-diameter left and right rake star wheels 36 are axially mounted at symmetrical positions with respect to the weeding rod 33 at the center, the small-diameter left and right rake star wheels 3 are arranged.
Numeral 7 is mounted on one of the right and left sides, for example, the inner side of the rake star wheel 36 with a slight deviation. The raking and feeding of the grain stalk between the outer raking star wheels 37 and 36 is facilitated.

The scraping rug belt 38 is supported by pulleys 56 on the left and right scraping star wheels 36 and pulleys supported by brackets 58 on supporting rods 35 on the lower rear side of the grain stem raising device 7 on the left and right sides. 57, and engages with the upper part of the crushed grain culm to collect and transport. A crankshaft 59 protrudes forward from the inner side case 9 and is interlocked with a bevel gear from a transmission mechanism in the side case 9. A bearing 60 is fitted to the crankshaft 59, and the bearing 60 is fitted to a drive groove 64 of a bracket 63 integrated with a movable blade 62 sliding on the lower surface of a fixed blade 61 of the cutting blade device 6.

An elastic body 65 such as rubber is integrally formed on the outer periphery of the bearing 60 with the elastic body 65 interposed therebetween.
By the rotation of the crankshaft 59, the movable blade 62 integral with the bracket 63 can be reciprocated to the left and right to mow, absorb vibrations, and buffer. Reference numeral 66 denotes a cutter bar, which has weeding rods 33 at the left and right ends.
The center part is fixed to the stock guide plate 40 below the weeding rod 33. The upper surface of the cutter bar 66 constitutes the upper surface C of the cutting blade device 6. A fixed blade 61 is attached along the lower front end. Reference numeral 67 denotes a slide bar for connecting the movable blade 62, which has the bracket 63 and slides along the lower surface of the cutter bar 66. A blade holder 68 presses the movable blade 62 against the lower surface of the fixed blade 61. 69
Is a balance weight of the crankshaft 59.

The cereal culm conveying device 22 engages with the conveying chain 10 and the clamping rod 11 for clamping and conveying the root portion of the cereal stem collected and conveyed by the scraping star wheel 36, and the spike side is engaged with a lug. And a spike transport chain 70 for transporting the same. These grain culm conveying devices 22 are mounted on the upper part of the mowing elevating frame 2 on the elevating shaft 18, and are linked with the mowing drive shaft 71 in the elevating shaft 18.

The transport chain 10 is located inside the grain culm transport route, and the clamping rod 13 is located outside. The sprockets 72 and 73 around which the transport chain 10 is wound, the chain frame 75 on which the chain rails 74 and the like are arranged, and the outer clamping table 12 are U-shaped so as to straddle the transport path of the grain culm. They are connected by a connecting arm 76.

The supporting structure of the clamping rod 11 is composed of a clamping table 12
Are supported between the front ends of the front leaf spring 13 and the rear leaf spring 14 that are curved in an L shape and protrude downward from the front and rear portions of the front leaf spring 13. The front and rear leaf springs 13 and 14 are made of leaf spring material, and set the elastic coefficient of the front leaf spring 13 to be smaller than that of the rear leaf spring 14 to clamp the grain as weak elasticity.
Each of the leaf springs 13 and 14 is formed by overlapping one side of an L-shaped curved leaf spring with one side of a bracket 77 integrated with the clamping table 12 and the back surface of the clamping rod 11, and bolting the overlapped portion to the bolt. It is fastened and fixed at 78 and 79.

In this manner, the holding rod 11 supported by the holding table 12 via the front leaf spring 13 and the rear leaf spring 14.
Since the front end side is repelled by the weak front leaf spring 13, it is easy to open for the feeding of the collected grain culm between the scraped star wheels 36, and the inheritance of the grain stalk to the start end of the transport chain 10. And the stagnation of the grain stalk between the scraping star wheel 36 and the starting end of the transport chain 10 can be reduced.

The grain culm conveyed while being held between the conveying chain 10 and the holding rod 11 in this way is held by the strong elastic force of the rear leaf spring 14, so that the culm is fed on the way. It is unlikely that the body is pulled out or leaks, and the feeding and feeding to the starting end of the feed chain 23 of the threshing device 21 is performed accurately. The front and rear leaf springs 13 and 14 protrude from the clamping table 12 at a position away from the clamping body 12 in the direction of the culm, and the middle part thereof is elastically bent to support the clamping force of the clamping rod 11. Therefore, there is no place where straw waste generated from the grain stalk being conveyed stagnates or is trapped, and smooth grain stalk conveyance can be performed. Further, the configuration can be simplified.

The transmission case 16 has an HST motor M of a hydraulic continuously variable transmission HST at the rear upper portion.
The ST motor M transmits the sprocket 80 of the traveling device 15 via the transmission mechanism in the transmission case 16 and also transmits the cutting drive shaft 71 from the power take-out shaft to link the respective portions of the cutting device 4. The transmission of each part of the mowing device 4 is linked with the power transmitting shaft in the mowing power transmission case 5 via the mowing drive shaft 71 and the power transmitting mechanism in the rotating case 41. By rotating the crankshaft 59 from the transmission shaft in the mowing transmission case 5, the movable blade 62 is reciprocated to perform mowing.

Furthermore, the raising drive shaft 4 in the left and right support rods 35
9, the raising chain 53 is driven to cause the raising of the grain stem by the raising lugs 52. Further, by rotating the outer scraping star wheel 36, the other scraping star wheels 36 and 3 are rotated.
While rotating the mesh 7 and rotating the scraping rug belt 38, the grain stalks are scraped and fed, and are sent to the rear grain stalk transport device 22 via the upper side of the mid case 8.

An oil tank T for storing oil and a small oil pump as a hydraulic device P intermittently driven by the expansion and contraction of the lift cylinder 20 are provided on the outer side of the reaper 4. H3 is linked. The refueling hose H3 is laid from the outer side to the inner side along the rear side of the mowing transmission case 5. Branched by 9 parts of the inner side case, the cereal stalk transport device 22
The lubrication hose H connected to the grain culm transfer nozzle N for lubricating 10 parts of the conveying chain, the lubrication hose H1 connected to the raising nozzle N1 for lubricating the raising chain 53, and the cutting oil for lubricating the sliding portion of the cutting blade device 6. The blade nozzle N2 and the connected oil supply hose H2 are branched.

The refueling hose H connected to the grain culm transport nozzle N extends around the rotating case 41, and the refueling hose H is fixed along the side surface of the rotating case 41 with the clamp 81. . Further, a rear portion of the refueling hose H is provided along the reaping elevating frame 2. The refueling hose H laid on the side surface of the rotating case 41 in this way is integrated with the rotating case 41 even when the mowing device 4 is moved up and down or the cutting transmission case 5 is moved left and right. In addition, the length of the refueling hose H is less likely to be greatly loosened or pulled, and is less likely to hinder the collecting culm.

The oil supply hose H may be configured such that a hydraulic device P is provided on the side of the cutting and lifting frame 2 to supply oil to the raising nozzle N1, the cutting blade nozzle N2, and the like.

[Brief description of the drawings]

FIG. 1 is a plan view of a mowing transmission case section.

FIG. 2 is a partial plan view and a partial enlarged cross-sectional view.

FIG. 3 is a side view thereof.

FIG. 4 is a side view of the reaper unit.

FIG. 5 is a plan view of a grain culm conveying device and a partial front view.

FIG. 6 is a side view of the combine.

[Explanation of symbols]

 Reference Signs List 5 Cutting transmission case 6 Cutting blade device 7 Grain culm moving device 8 Mid case 9 Side case A Upper surface of mid case portion B Upper surface of side case portion C Upper surface of cutting blade device

Claims (1)

[Claims] 1. A cutting blade transmission case 5 on which a cutting blade device 6, a grain culm moving device 7, and the like are mounted, is attached to a central mid portion of a stem portion of a cereal stem cut and collected by the front cutting blade device 6. The upper surface A of the case 8 is provided at a lower level than the upper surface B of the side case 9 at the left and right sides, and substantially at the same height as or lower than the rear extension surface of the upper surface C of the cutting blade device 6. Mowing equipment.