JPH0534511Y2 - - Google Patents

Description

[Detailed description of the invention] (a) Field of industrial application The present invention relates to a grain culm lifting transmission device in a self-shredding combine harvester that reaps and threshes grain culms.

(B) Prior Art Conventionally, a grain culm raking path from a pair of grain culm pulling bodies of approximately equal height provided on the uncut land side of the front part of the cutting blade,
A grain culm raking route from one grain culm pulling body on the mown field side and a grain culm transport route from their confluence to the rear threshing device are formed in a substantially Y shape in plan view, and the A combine harvester in which the upper part of each grain culm pulling body is driven by a transmission shaft rising from a transmission case at the rear of the cutting blade is already known.

In addition, in a three-row combine harvester, the middle grain culm pulling body is lower than the grain culm pulling bodies on both sides, and the drive device is connected to the transmission shaft attached to the grass cutting frame in the front and rear direction along the ground, and from its front end. It is also already known that the transmission shaft is configured with a transmission shaft disposed diagonally upward laterally.

(c) Problems to be solved by the invention Generally, in the grain transfer path of a self-removing combine harvester, the harvested grain culm that has been raked from the raking path is transferred to one side of the machine using a horizontal conveying device, and then transferred vertically. There are two methods: one is to feed the grain to the threshing device using a conveyor, and the other is to connect multiple raking paths and the conveyance path in a Y-shape. The latter allows for smooth inheritance of the front grain culm, but has the problem of increasing the length of the body. It was hot.

In particular, when the central grain culm pulling body of a three-row mowing type is set to approximately the same height as the grain culm pulling bodies on both sides in order to improve the lifting performance, the transmission shaft that drives the grain culm pulling body is located near the confluence of the raking paths. Since the grain culm is vertically raised from the top, it is possible to avoid the grain culm from interfering with the transmission shaft, and the front part of the grain culm conveying body, which also serves as a handling depth adjustment device, from interfering with the front transmission shaft. In order to achieve this, the merging section and the grain culm conveying device had to be separated rearward, which caused the problem that the length of the machine body became even longer.

In addition, the drive device for the central, low grain culm pulling body is configured with a power transmission shaft running in the front-rear direction along the ground and a power transmission shaft tilting laterally upward from its front end.
Even though the grain culm puller is low, the entire transmission shaft becomes long, which increases the cost, and if this is applied to the transmission device of the middle grain culm puller, which is almost as tall as the left and right grain culm pullers, the grain culm puller becomes unstable, making it difficult to pull up the grain culm accurately.Furthermore, the inclined shaft that tilts laterally and upward becomes an obstacle to the movement of the grain culm that is pulled up and pushed backwards, and this cannot be prevented. Then,
The tilting shaft had to be surrounded by a guide plate that was wide in width and long in the front and back direction.

(d) Means for solving the problem The present invention provides a grain culm raking path from a pair of grain culm pulling bodies of approximately equal height provided on the uncut land side of the front part of the cutting blade, and A grain culm raking path from one grain culm pulling body on the side and a grain culm transport path from their confluence to the rear threshing device are formed into a substantially Y-shaped line in plan view, and each grain culm In a combine harvester in which the upper part of the raising body is driven by a transmission shaft that rises from a transmission case at the rear of the cutting blade, the transmission shaft that drives the central grain culm pulling body is connected to a position slightly above the confluence of the raking paths. It is configured to be inclined forward and upward from the front through the middle scraping body, and its upper part is bent upward at the back of the central grain culm pulling body to form a dogleg shape when viewed from the side. By doing so, the above-mentioned problems were solved.

(e) Effect Grain culms are raised by the grain culm pulling body on the uncut land side, cut and raked backwards, and grains are harvested and raked by the grain culm pulling body on the already cut land side. The grain culms merge at the rear of the cutting blade, and the grain culm conveying device conveys the merged grain culms diagonally rearward and supplies them to the threshing device.

In the region where the harvested grain culms join together, the transmission shaft that drives the central grain culm pulling body is tilted forward, so the merging region can be moved forward within the range where the grain culms do not interfere with the transmission shaft. In addition, since the front part of the grain culm conveying device faces the merging section, which is located further forward than the conventional one, the length of the machine body can be shortened.

Then, smooth grain culm inheritance, which is unique to the Y-shaped moving route, can be carried out at the merging part that is the connecting part between the raking route and the grain culm transport route.

(F) Example An example of the present invention will be explained with reference to the drawings.
The threshing device is mounted on one side of the machine base 2 which has the running position 1, and the operation panel 3, driver's seat, threshing tank, etc. are arranged in order from the front on the other side. is equipped with a complete processing device consisting of a reaping device 5 and a grain culm conveying device 6.

The preprocessing frame 7 of the preprocessing device includes a horizontal shaft holding cylinder 10 which has a horizontal input shaft having an input pulley 8 on the operation panel 3 side and is rotatably supported by the support column 4. Vertical shaft holder with built-in transmission shaft that is inclined so that the tip part is deviated toward the operation panel 3 side when seen from the input pulley 8 side, and hangs forward and downward when viewed from the side while being close to the transmission case 11. It is composed of a cylinder 12, a horizontal transmission case 13 connected to the lower part of the vertical shaft holding cylinder 12 and extending substantially over the entire width of the reaping device 5, and a reaping frame 15 protruding forward from the transmission case 13. The transmission case 13 is connected to the vertical shaft holding cylinder 12.
It protrudes largely from the connection part with the feed chain 16 side of the threshing device toward the operation panel 3 side.

The reaping device 5 includes grass division bodies 17, grain culm raising bodies 18, 18, 18a, a cutting blade 19, a raking wheel 20, whose heights are approximately equal, and the two in the uncut area form a pair.
. . . A stem raking belt 21 with lugs meshes with the drive sprocket 22 on the left (travel direction) side of the transmission case 13 and drives the raking wheel 20 and the stem raking belt 21 on that side. At the same time, the left side stock original raking chain 23, which forms the grain culm raking path from the pair of grain culm pulling bodies 18, 18a, is meshed with the drive sprocket 25 on the right side of the transmission case 13 and is engaged with the raking chain on that side. A right-side stock raking chain 26 forms a grain culm raking path that continues to the right grain culm pulling body 18 while driving the wheel 20 and the stalk raking bed 21, and a transmission rising from both sides of the transmission case 13. Tubes 27, 27
Ear side raking chain 2 with raking claws driven by
8, 28, and a panicle side scraping chain 28a further above the right panicle side scraping chain. The stock base scraping chain 23 and the right stock base scraping chain 26 are approximately V-shaped in plan view, and the rear part of the left stock base scraping chain 23 is directed diagonally outward toward the starting end of the field chain 16. There is a grain culm raking path that continues to the integrated grain culm triggering bodies 18, 18a on the uncut land side, and a grain culm triggering body 18 on the mown field side.
The grain culm raking passage that follows is V-shaped in plan view.

Further, the grain culm conveying device 6 has clamping rails facing each other on the conveying surface, and the right side stock stock raking chain 2.
The stock head conveying chain 30 extends from the vicinity of the upper part of the left stock head holding chain 23 to the upper part of the starting end of the feed chain 16 along the rear conveyance surface of the left stock head holding chain 23, and the scraping locus of the front end portion is the same as that of the ear side scraping chains 28, 28, An ear-side conveying chain 3 with conveying claws that substantially overlaps the scraping locus at the end of 28a in plan view, and whose rear portion faces onto an inlet plate 31 from which the supply port of the threshing device protrudes forward from the bottom.
2, the conveyance path formed by this grain culm conveyance device 6 and the V-shaped grain culm raking path form a Y-shape as a whole, and the grain culm conveyance device 6 The handling depth is adjusted by raising and lowering the transverse shaft holding cylinder 10 together with the gear case 6a using a suitable lifting device.

Furthermore, the horizontal shaft holding cylinder 10 and the transmission case 1
The feed chain 16 side of No. 3 is integrally connected by an auxiliary frame 34, and the joint portion of the external auxiliary frame 34, the vertical shaft holding cylinder 12, the horizontal shaft holding cylinder 10, and the transmission case 13 has a substantially rectangular shape. The stock transport chain 3 of the auxiliary frame 34
A portion corresponding to the stock conveyance path formed by 0 is bent downward to form a recess 34a.

Of the grain culm lifting bodies 18..., those on both sides are driven by transmission cylinders 33, 33 rising from both sides of the transmission case 13, and the transmission cylinder 35 of the middle grain culm lifting body 18a is driven by: The feed chain 16 is inserted from immediately after the upper grain culm pulling body 18a of the transmission case 13.
By protruding forward with a gentle slope toward the middle of the height of the grain culm pulling body 18a from the part slightly deviated to the side, and further bending along the back surface of the grain culm pulling body 18a via the bevel gear case 36. It has a dogleg shape when viewed from the side, and the center scraping wheel 20 is driven by meshing with the left scraping wheel 20. 38 is the vertical shaft holding cylinder 1
A hydraulic cylinder 39 is a guide rod that tilts the pretreatment device up and down about the horizontal axis holding cylinder 10 by raising and lowering the hydraulic cylinder 2.

In the above-mentioned combine harvester, the grain culms that are divided by the weed cutting bodies 17, raised by the grain culm pulling bodies 18, and harvested by the cutting blades 19 are moved to the raking wheels 20, which are cut by the cutting blades 19.
..., by the grain culm raking path which is approximately V-shaped in plan view and formed by the left and right stock root raking chains 23, 26, the stem raking belt 21..., and the panicle side raking chain 28...a. The grains are scraped backward and merged, and then transferred to the grain culm conveying device 6, where the stalk part is conveyed from the terminal end of the grain stalk conveying chain 30 to the starting end of the feed chain 16, and the grain side is conveyed through the ear side conveying chain 32. The grain is inserted into the handling chamber of the threshing device from the end thereof through the inlet plate 31 and the supply port, and is subjected to threshing processing.

The central transmission cylinder 35 is connected to the transmission case 13 in the same way as the transmission cylinders 33 on both sides.
Since it protrudes forward at a gentle rising angle, the parts corresponding to the left and right stock head raking chains 23 and 26 are largely deviated forward, so that the confluence part A can be moved from the center of the width of the reaping device 5. If it is moved slightly to the left (feed chain side), the right side stock former scraping chain 26
By bringing the merging section A closer to the transmission tube 35 to a required width of the conveying path, the merging section A can be set further forward than in the conventional system, and the reaping device 5 can be brought closer to the grain culm conveying device 6 by that amount. This allows the length of the machine body to be shortened, and even with this configuration, grain culms can be transferred smoothly at the merging section.

In addition, during reaping and threshing work, the reaping device 5 and the transmission case 13 extend farther from the vertical shaft holding cylinder 12 toward the operation panel 3 side than toward the feed chain 16 side, so when the machine body vibrates due to unevenness in the field, etc. As the operation panel 3 side is rolled downward, a large torsional force is applied to the vertical shaft holding cylinder 12. However, since the shaft support frame resists the torsion, the cutting height may vary from side to side. , the vertical shaft holding cylinder 12 will not be damaged.

Furthermore, the stem portion of the grain stem conveyed by the grain stem conveying device 6 is connected to the vertical shaft holding cylinder 1 by the stem conveying chain 30.
The stock is transferred from near the front of the stock to the outside beyond the auxiliary frame 34, but since the part of the auxiliary frame 34 corresponding to the stock transport path is a downwardly curved concave part, the stock part is transferred to the outside beyond the auxiliary frame 34. It is transported in an orderly manner without colliding with the object and disturbing its posture.

(g) Effects of the invention The present invention provides a grain culm raking path from a pair of grain culm raising bodies 18 of approximately equal height provided on the uncut land side at the front of the cutting blade 19, and a grain culm raking path from the grain culm raising body 18 provided on the uncut land side at the front of the cutting blade 19. The grain culm raking path from each of the grain culm pulling bodies 18 and the grain culm transporting path from their confluence to the rear threshing device are formed in a substantially Y shape in plan view, and each of the grain culm lifting bodies Cut the upper part of the cutting blade 19
In the combine harvester, which is driven by a transmission shaft rising from the rear transmission case 13, the transmission shaft that drives the central grain culm lifting body 18a is moved from slightly ahead of the confluence A of the raking paths to the intermediate raking path. It is tilted forward and upward through the top of the body, and its upper part is bent upward at the back of the central grain culm pulling body 18a to form a dogleg shape when viewed from the side. The confluence of the grain culm raking paths can be set at the front along the inclination of the transmission shaft that drives the intermediate grain culm pulling body, so that the front end faces the confluence of the grain culm conveying device and the reaping device. 5 can be brought closer to each other to shorten the length of the fuselage, reducing costs and reducing the weight of the fuselage, as well as providing a combine harvester with excellent maneuverability.

Further, the front part of the grain culm conveying device is a grain culm lifting body 18,
18a, it is possible to take over and convey the grain culms in an orderly standing position immediately after being raised, and to prevent the grain culms from being disturbed.

Furthermore, although the center grain culm pulling body 18a is formed to be as high as the left and right ones, the transmission shaft supports the grain culm pulling body 18a in an inclined position facing forward and upward. As a result, the tall grain culm pulling body can be supported firmly and stably, and the grain culm can be raised reliably.Moreover, the transmission shaft can be tilted forward and upward through the upper part of the intermediate raking body. Therefore, the grain culms are not raised and become an obstacle to the movement of the grain culms being scraped, and the grain culms can be scraped in orderly and smoothly to join together.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention,
Figure 1 is a side view of the combine with the rear part omitted. FIG. 2 is a plan view of the same as above. 5... Reaping device, 6... Grain culm conveying device, 10...
...Horizontal shaft holding cylinder, 12...Vertical shaft holding cylinder, 13...Transmission case, 23...Left side stock former scraping chain, 26...
...Right-side stock scraping chain, 30... stock transport chain, 33, 35... transmission cylinder, A... merging section.

Claims (1)

[Scope of utility model registration request] A grain culm raking path from a pair of grain culm pulling bodies 18 of approximately equal height provided on the uncut land side of the front part of the cutting blade 19, and a grain culm pulling path from one grain culm pulling body 18 on the mowed land side. The grain culm raking path and the grain culm transport path from their confluence to the rear threshing device are formed in a substantially Y shape in plan view, and the upper part of each grain culm pulling body is connected to the cutting blade 19. In a combine that is driven by a transmission shaft rising from the rear transmission case 13, the transmission shaft that drives the central grain culm raising body 18a is moved from slightly ahead of the confluence A of the raking path to the middle of the raking path. It is characterized in that it is inclined forward and upward through the body, and its upper part is bent upward at the back of the central grain culm pulling body 18a to form a dogleg shape in side view. Grain culm pulling transmission device in a combine harvester.