JPH0445466Y2 - - Google Patents

Description

[Detailed description of the invention] (a) Industrial application field The present invention relates to a grain culm pulling device for a multi-row combine harvester that cuts three or more rows.

(b) Prior art Conventionally, the grain culm pulling device in a multi-row harvester can easily construct a transmission mechanism by driving each grain culm pulling body by a transmission shaft suspended horizontally above; At the same time, if the transmission shaft is low, the ears collide with the transmission shaft, disturbing the posture of the culm and causing a delay in the tip of the ears.

To solve these problems, the grain culm pulling bodies on both sides were tilted toward the center, the middle grain culm pulling body was made lower than those on both sides, and each grain culm pulling body was driven upward. A grain culm pulling device for a combine harvester is already known from Japanese Patent Application Laid-Open No. 121714/1983.

(C) Problems to be solved by the invention The grain culm pulling device in the known combine harvester has a pulling claw protruding from the left and right grain culm pulling bodies to form a grain culm pulling path above the intermediate grain culm pulling body. There is a large distance between the tips of the grain culms, and the pulling claws tilt downward.As a result, when pulling up long culms, the grain culms fall off and cannot be pulled up accurately.This phenomenon causes problems such as lodging grain culms. It occurred significantly in soft and weak items.

In addition, the transmission device attached to the intermediate triggering body was made to protrude forward from the transmission case provided at the rear of the cutting blade, and then rose further from the front end, making the structure complicated and unstable. Moreover, there was no suitable means for supporting the lower part of the raising body.

In order to improve the above-mentioned drawbacks, if the intermediate grain culm lifting device is driven at the top by a shaft rising from the bottom in the same way as the side parts, this shaft becomes an obstacle, causing the grain culm conveying device to become a grain culm lifting device. This resulted in problems such as the grain culm transfer to the grain culm conveyance device becoming unsmooth, and the length of the machine being long from front to back.

(d) Means for solving the problem The present invention has grain culm lifting bodies upright on both sides and the middle part of the front part of the machine body, and a cutting blade and a grain culm raking device are installed at the lower part of the rear part of the machine. In a combine harvester in which grain culms are conveyed and supplied to a threshing device by a grain culm conveying device, side grain culm pulling bodies are driven upward, and an intermediate grain culm pulling body is disposed below the grain culm raking device. At the same time, the intermediate grain culm pulling body is supported by a support member installed upright on the machine frame, and the rear part of the intermediate grain culm pulling body is provided with a structure surrounding the support member and on both sides and A guide plate whose rear part serves as a series of grain guide surfaces along the grain culm movement route is provided, the upper end of the guide plate is attached to the rear surface of the intermediate grain culm pulling body, and the lower part is attached to the grain culm raking device. By doing so, it is possible to firmly support the intermediate grain culm pulling body and to perform stable driving, and even long culms can be reliably raised.
Furthermore, the above-mentioned problem has been solved by making it possible to shorten the longitudinal length of the machine body by bringing the grain culm conveying device closer to the grain culm lifting device.

(E) Action Grain culms separated by the tiller are raised by the grain culm pulling device and raked backward by the grain culm raking device.

At this time, the grain culm pulling bodies on both sides are driven from above, and the grain culm pulling bodies between them are driven from below.

When the grain culm is a long culm, not only the grain culm pulling paths on both sides, but also the grain culm lifting path between them can be reliably pulled up while being guided by a guide plate to the tip side, and The support member that supports the upper part of the grain culm puller is surrounded by a guide plate, so it can be raked in an orderly manner without getting in the way of raking.In this state, the front part of the grain culm puller is The grain is transferred to the grain conveying device that has entered the lower part and is transported and supplied to the threshing device.

(F) Example An example of the present invention will be explained with reference to the drawings.
The threshing device 1 is mounted on one side of the machine base 3 having the traveling device 2, and the other side is provided with an operation panel 4, a driver's seat 5, a grain tank, an engine, etc. in order from the front. The preprocessing device installed in front of the grain culm 1 is composed of a reaping device 6 and a grain culm conveying device 7, and its preprocessing frame 8 is centered around a horizontal intermediate shaft 10 supported by the machine stand 3 and the threshing device 1. tilts up and down,
The reaping device 6 includes a weed splitter 13 attached to the tip of a reaping frame 12 protruding forward from a horizontal transmission case 11 containing a horizontal shaft, and upper and lower sprockets 14, 14a, etc. At least three grain culm lifting bodies 15 each having a chain with a lifting claw attached to the driven side (the driven side may be a roller)
A grain culm lifting device consisting of ..., a cutting blade 16 attached to the lower surface of the reaping frame 12 near the rear,
It consists of a grain culm raking device 17 for raking the grain culm backwards, and the grain culm lifting bodies 15 on both sides have lower parts supported by reaping frames 12, 12, and upper parts rising from the horizontal transmission case 11. The upper sprocket 14 is supported by internally installed pipes 18, 18, and the upper sprocket 14 is driven by the internally installed transmission shaft. A pipe 20 protruding forward through the lower part of the fitting device 17 and housing a transmission shaft therein, and gear cases 21 and 22, and as shown in FIGS. The gear case 22 on the tip side drives the lower sprocket 14a of the intermediate grain culm lifting body 15, and the gear case 21 on the base side drives the reaping frame 12 in the vicinity. The diameter of the lower sprocket 14a, which is supported by a bracket 21a protruding from the top and serves as a driving body for the intermediate grain culm pulling body 15, is the third sprocket.
As shown in the figure, the diameter of the lower sprockets 14a, 14a (rollers in this embodiment) of the grain culm lifting bodies 15, 15 on both sides is smaller than the diameter (however, the length of the lifting claws is the same as on both sides). The circular locus of the front end of the pulling pawl becomes small, thereby widening the distance from the circular locus of the lifting pawl that pulls up the right side one thread to prevent them from interfering with each other.

Further, a slightly upper part of the intermediate grain culm pulling body 15 is supported by a support member 28 erected at the middle part of the pipe 20, and the grain culm pulling body 15, 15 on the mown field side constitutes a grain culm pulling path for two rows, and the grain culm pulling body 15 on the uncut land side configures a grain culm pulling path for one row.

The grain culm raking device 17 includes a star foil-shaped raking ring 25..., a raking belt 26 with a flexible lug that projects diagonally forward from above, and a raking belt 26 with a flexible lug that extends from above the raking ring 25 on the uncut land side. Stocking chain 27 extending to the rear
It consists of a horizontal conveyance device 32a, a stem section raking body 35 that goes from the mown field side toward the front end rotating section of the ear side conveying body 40 of the grain culm conveying device 7, and an ear section raking body 36 above the stem section raking body 35. , the stem raking body 35 and panicle raking body 36 on the mowed field side and the stem raking body 27a on the uncut field side are arranged in a V-shape in plan view, ring 25,2
5 and the rear V pulleys 26a, 26a of the scraping belts 26, 26 are connected to the vertical shafts 29 in the holding cylinders 29, 29, which are erected on both sides of the horizontal transmission case 11.
a, 29a, and the intermediate scraping ring 25 and V-pulley 26a are attached to a holding cylinder that stands up from the middle part of the horizontal transmission case 11 and is supported by a support arm 30 whose upper part is bent diagonally forward. Vertical axis 2 within 29
9a, this raking wheel 25 is meshed with the raking wheel 25 on the mown field side so that it is driven, and is attached to the upper end of the intermediate holding cylinder 29, and the raking belt 2
The guide plate 32 attached on the cover 31 covering the
It has a substantially U-shape with an open front in plan view, and guides the grain culm on both left and right sides and rear surface, and supports the grain culm by screwing the front both sides to the back surface of the intermediate grain culm pulling body 15. The guide plate 32 cooperates with the member 28 to support the intermediate grain culm triggering body 15, and the guide plate 32 surrounds the supporting member 28.

Further, at the rear of the grain culm raking device 17, a horizontal conveying device 32a consisting of a chain is provided, and the shaft 34 of the sprocket 33 at the starting end of the conveying device extends upward and has two upper and lower stages protruding diagonally outward and forward. The rear parts of the stem part raking body 35 and panicle part raking body 36 are supported, and the chain raking claws 37 installed in these raking bodies 35 and 36 stand up at the front rotating part. It protrudes and locks the grain culm, scrapes it diagonally to the right rear, and then collapses at the rear rotating part, and the front part of the stem scraper body 35 faces onto the outer scraper wheel 25, and the horizontal transmission case 11
A rotation shaft in the front and back direction that transmits power is housed in the pretreatment frame 8 made of a cylindrical body. The scraping conveyance surface and the scraping bodies 35, 36 are arranged in a V-shape with a narrower rear part as shown in FIG. 2 when viewed from above.

The grain culm conveying device 7 is composed of a stock conveying chain 39 driven by a horizontal intermediate shaft 10 and a lug-equipped ear side conveying body 40.
The handling depth is adjusted by tilting up and down about the center, and the stock head of the transported grain culm is transferred to the feed chain 43 of the threshing device 1 and the starting end of the pinch rail, and the ear side is fed to the supply port.

45, 46, and 47 are stock guide bodies made of elastic bodies.

Next, to explain the operation of the above-mentioned combine harvester, the grain culm split by the weed cutting body 13 is raised by the grain culm lifting body 15 and at the same time is raked rearward by the grain culm raking device 17. It can be done.

When the grain culm is a long culm, it goes without saying that the grain culm pulling bodies 15 on both sides reliably pull up to the ears, and the middle grain culm pulling body 15 is driven at the lower part. Therefore, the transmission device can be simplified without becoming an obstacle to raking the grain culm, and can be constructed as high as the ones on both sides, thereby ensuring that all the grain culms are pulled up to the ear side. Moreover, even if each grain culm pulling body 15 is lowered, the ear side can pass through the upper open space between them, and the upper portion of the intermediate grain culm pulling body 15 is supported by the support member 28. Since it is supported, the grain culm is pulled up in a strongly supported state.

In addition, the two rows of grain culms that have been raked by the raking wheels 25, 25 and the raking belts 26, 26 in the middle of the mowed field side and cut by the cutting blade 16 have stems diagonally directed toward the uncut field side. The rake claws 37 of the part rake body 35 and the ear part rake member 36...
The intermediate scraping wheel 2 is conveyed from the front by...
5, the grain is guided by the guide plate 32 and moves toward the starting end rotation part of the ear-side conveying body 40 of the grain culm conveying device 7.

Subsequently, the intermediate raking wheel 25 and the horizontal conveyance device 32a convey the stock head laterally, and the guide plate 32 guides it with its diagonally rearward surface and rear surface, and the guide plate 32 is guided from the uncut land side. Guided by the side, the raking wheel 25 on the uncut land side, the stock raking chain 27 and the stem raking body 2
The harvested grain culms that have been raked by 7a join the grain culms that were laterally conveyed from the cut field side near the intermediate curved part of the lateral conveyance device 32a, and are moved to the outside by the side guide body 42. The grain side that is received and guided is transferred to the starting end of the stock transfer chain 39 of the grain culm transfer device 7, and the ear side is transferred to the starting end of the ear side transfer body 40.

At this time, even if the front part of the grain culm conveying device 7 is tilted up and down centering on the rear part, it remains in front of the pipe 18 in side view as shown in FIG.
Since the grain culm can be pulled up and scraped, the grain culm can be transferred to the grain culm conveying device 7 at the same time, and the reaping device 6 and the grain culm conveying device 7 can be brought close to each other to improve the longitudinal length of the machine. The length can be shortened.

Further, by providing the side guide body 42 made of a guide rod or a guide plate on the uncut land side, the stock head raking chain 27 on the outside thereof can be omitted.

(g) Effects of the invention The present invention has grain culm lifting bodies 15 erected on both sides and the middle part of the front part of the machine body, and a cutting blade 16 at the rear lower part.
In this combine harvester, a grain culm raking device 17 is provided, and the harvested grain culm is transported and supplied to the threshing device 1 by a grain culm conveying device. The lifting body 15 is driven via a transmission device disposed at the lower part of the grain culm raking device 17, and the intermediate grain culm pulling body 15 is supported by a support member 28 erected on the machine frame. A guide plate 32 is provided at the rear of the raising body 15, surrounding the supporting member 28, and having both sides and the rear serving as a series of grain culm guide surfaces along the grain culm movement route. Attached to the rear surface of the intermediate grain culm triggering body 15,
Since the lower part is attached to the grain culm raking device, it is possible to open the upper part of each grain culm raising body 15 and configure each grain culm raising body 15 to be low without causing an obstacle to raising long culms. However, the intermediate grain culm pulling body 15 is supported by the lower machine frame, and the support member 28 whose upper part is erected on the lower machine frame which is strong, and the guide plate mounted on the grain culm raking device 17. Since the culm is supported by the culm 32, it can be held at the same height as the side culm and held in an extremely stable state, thereby allowing even long culms to be raised reliably without stagnation.

Further, as described above, the guide plate 32 receives and guides the upper part of the grain culm that is being scraped in while supporting the intermediate grain culm pulling body 15 so as not to come apart, and also prevents the upper part of the grain culm from becoming entangled with the support member 28. do.

Moreover, the transmission device of the intermediate grain culm pulling body 15 can be configured simply, thereby reducing the weight and cost of the front part of the machine body.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention,
FIG. 1 is a side view of the combine with parts of the rear and side reaping frames of the threshing device omitted, FIG. 2 is a plan view of the same, and FIG. 3 is a front view of the combine. 7... Grain culm conveyance device, 12... Reaping frame,
15... Grain culm pulling body, 16... Cutting blade, 17... Grain culm raking device, 25... raking ring, 28... Support member.

Claims (1)

[Scope of utility model registration request] Grain culm lifting bodies 15 are installed on both sides of the front part of the fuselage and in the middle part...
... is installed upright, a cutting blade 16 and a grain culm raking device 17 are provided at the rear lower part of the combine harvester, and the harvested grain culm is transported and supplied to the threshing device 1 by the grain culm conveying device. The lifting body 15 is driven upwardly, and the intermediate grain culm pulling body 15 is driven via a transmission device disposed at the lower part of the grain culm raking device 17, and the intermediate grain culm pulling body 15 is erected on the machine frame. Support member 2
8, and a guide plate 32 is provided at the rear of the intermediate grain culm pulling body 15, surrounding the support member 28 and having both sides and the rear serving as a series of grain culm guide surfaces along the grain culm movement path. A grain culm lifting device for a combine harvester, characterized in that the upper end of the guide plate 32 is attached to the rear surface of the intermediate grain culm pulling body 15, and the lower part is attached to a grain culm raking device.