JPH0353635Y2 - - Google Patents

Description

[Detailed description of the invention] (a) Industrial application field The present invention relates to a grain culm raking device for a harvester that rakes grain culms harvested by a reaping device into a rear processing section.

(b) Prior Art Conventionally, a raking device of a harvester that rakes the grain culm harvested by a reaper device rearward with a star foil has teeth that are exposed on the working side extending from the front lower part to the rear upper part of the upper surface of the star foil. On the non-active side, which extends from the upper rear to the lower front, the rotation locus of the star foil teeth was also covered with a cover.

(c) Problems to be solved by the invention The raking device of the known harvesting machine has a tendency to collect weeds including straw and mud that have been raked by the star foil on the top surface of the cover. There is a disadvantage that the above-mentioned straw waste, etc. gets caught on the shaft of the culm, and this accumulated straw waste, etc., obstructs the movement of the stock base of the harvested grain culm into which it is raked, and the posture of the grain culm is significantly disturbed. Work was occasionally interrupted to remove deposits.

(d) Means for solving the problem The present invention consists of a reaping device installed at the front of the machine that includes a cutting blade, a grain culm puller, a star wheel for raking grain whose front part is tilted lower, and a grain cutting device installed at the front of the machine. In a harvesting machine consisting of a culm raking band, etc., the part of the star foil that rotates diagonally downward is the non-working side, and the part that rotates diagonally upward from the front part is the working side,
A portion of the cover covering the upper surface of the star foil extending from the front outer side of the non-active side to the circumference of the cylinder in which the vertical axis of the star foil is housed is configured as a notch,
A raking belt having a large number of lugs is stretched between a pulley attached to the upper part of the vertical shaft and a pulley arranged in front of the star foil, and the raking belt surrounds the outer upper surface of the notch in plan view. By configuring it as follows, the above-mentioned problem was solved.

(E) Action The base of the grain culm cut by the cutting blade is raked from the front lower part to the rear upper part by the working side of the raking belt and star foil.

At this time, the star foil scrapes up the weeds and also scraps of straw called hakama that have fallen off from the base of the plant, and when the raking process moves from the end to the non-raking process, the star foil covers the top surface of the star foil. However, since a notch is provided on the outside of the lower half of the non-active side of the cover, the teeth of the star foil that rotates downward can remove the straw, etc. hanging down from the notch from the outside. Actively scrape off the area around the tube, and scrape off any straw particles that try to get caught in the tube that covers the shaft of the star foil.

Further, the stalk of the grain culm that is raked in by the star foil is also raked in by a raking belt with lugs, and the raking belt is provided on the outer side of the front part of the cover, and is raked in from around the tube. Since it covers the outside of the notch along the outer periphery, it prevents the grain culm from falling down toward the notch.

(F) Example An example of the present invention will be explained with reference to the drawings.
Reference numeral 1 denotes a threshing device mounted on a machine base 3 having a traveling device 2. At the front part of the threshing device, a rear part of a preprocessing frame 5 on which a reaping device 4 is attached is supported on a horizontal shaft 6 so as to be tiltable up and down. Between the reaping device 4 and the threshing device 1, there is provided a grain side conveyor 7 and a stock head conveyor 8, and the rear of the grain culm conveyor 9, which also serves as a handling depth adjustment device, is connected to the horizontal shaft 6. It is supported via a vertical shaft 10 and a transmission case 11 so as to be tiltable up and down.

Further, the reaping device 4 includes a cutting blade 12, a weeding body 13,
..., grain culm pulling body 14..., star foils 15, 15 that engage with each other and scrape the stock base of the grain culm, and scraping belts 16 each stretched above them and having a large number of lugs. . do.

Further, a holding cylinder 22 is provided in which the forward-inclined vertical shaft 21 of the star wheels 15, 15 is fixed to the transmission case 17.
A worm gear 24 supported through bearings 23, 23 and fixed to the lower end of the worm gear 24 is attached to the transmission case 11.
A boss 2 is driven by a worm 26 fixed to a drive shaft 25 inside and keyed to the middle part of the vertical shaft 21.
The star foil 15 that is loosely fitted onto the vertical shaft 21 and a cylinder 28 that covers the upper part of the vertical shaft 21 at a distance are screwed onto the flange of 7. A pulley 29 loosely fitted into the center hole is welded, and a metal 30 is loosely fitted onto the upper end of the vertical shaft 21.

The cover 31 that covers the upper surface of the star foil 15 has a cylindrical part 31a in the center that covers the outer periphery of the cylinder 28, and a narrow hanging part 31b in the outer periphery.
In plan view, as shown in FIG.
The rear half of the non-operating side from the rear to the front lower part covers the entire rotation locus of the teeth, and the succeeding half is formed in a notch 33 continuing to the cylindrical part 31a, and the front part of the cover 31 is The scraping belt 16 is suspended from the belt cover 34 with a short distance from the star foil 15 by a stay 36 whose length can be adjusted with a bolt 35, and the rear outer side is erected on the machine frame. It is screwed onto a stay 38 extending from a support 37.

Further, the belt cover 34 has its front part screwed onto the upper end of a shaft 40 that pivotally supports the front pulley 39, and its rear part attached to the metal 30.
The support frame 41 is fixed to a column 42 erected on the cutting blade frame.

Further, a lower surface cover 43 covering the rear lower surface of the star foil 15 is screwed onto a disc 22a fixed to the holding tube 22.

In addition, 44 and 45 in the drawing are the star foils 1.
5, 15 are a pair of left and right culm guides along the upper surface.

In the above-mentioned harvesting machine, the grain culms to be planted in the field are divided by the weed cutting body 13... and then by the grain culm raising body 14...
The grain culm that is raised by the cutting blade 12 and harvested by the cutting blade 12 has its root part held by the star foils 15 , 15 , and the above-mentioned grain culm is held by the lugs of the raking belt 16 to the rear of the tooth bottom part (trough) of the star foil 15 . The grain culms are raked into the grain culm conveying device 9, and lifted to the rear by the grain culm conveying device 9 while being adjusted to an appropriate handling depth. During the grain culm raking, the star foils 15, 15 also rak in soil-adhered weeds and straw debris in the stock culm raking section, and these may be deposited on the cover 31 and deposited on the cover 31. Although it gets caught in the cylindrical part 31a,
The cover 31 and the starch 15 are inclined so that the front part is lower, and the lower part of the non-active side of the cover 31 is formed in a notch 33, so that the straw that has accumulated and hangs down from the notch 33 is removed. Debris and weeds are scraped off by the teeth of the star foil 15, and at this time,
The straw and weeds that accumulate and get caught in the cylindrical body 31a are caused to fall from the notch 33 by tailgating.

(g) Effects of the invention As described above, the present invention combines the reaping device 4 installed at the front of the machine with a cutting blade 12, a grain culm pulling body 14, and a raking star whose front part is tilted lower. foil 1
5 and a grain culm rake band, etc., and the part of the star foil 15 that rotates diagonally downward is the non-working side, and the part that rotates diagonally upward from the front part is the working side. In the machine, a portion of the cover 31 covering the top surface of the star foil 15 extending from the front outer side of the non-active side to the circumference of the cylinder 28 in which the vertical shaft 21 of the star foil 15 is housed is configured as a notch 33, and A raking belt 16 having a large number of lugs is stretched between a pulley 29 attached to the upper part of the vertical shaft 21 and a pulley disposed in front of the star foil 15, and the raking belt 16 cuts the notch 3 in plan view.
Since the star foil 15 is configured so as to surround the outer upper surface of the star foil 15, when the straw and weeds that have been carried around and accumulated on the non-active upper surface of the cover 31 hang down from the notch 33, the teeth of the star foil 15 will prevent the hanging. When the straw and weeds are scraped off, the debris that has accumulated near the tube 28 is also shifted and pulled down, resulting in straw and weeds being accumulated on the non-active side of the cover 31 and in the vicinity of the tube 28. And it is possible to prevent them from wrapping around the tube 28.

Further, a notch 33 is provided on the front outer side of the cover 31, and the scraping belt 16 is inserted into the notch 33.
Since the grain culm is received on the outside and the raking operation is performed, it is possible to prevent the grain culm from entering the notch portion 33.

[Brief explanation of drawings]

The drawings show one embodiment of the present invention,
FIG. 1 is a plan view of the main parts, FIG. 2 is a cross-sectional view of the same as above, FIG. 3 is a cross-sectional view of the supporting portion of the star foil, and FIG. 4 is a schematic diagram of the combine harvester with the rear part omitted. 4... Reaping device, 9... Grain culm conveying device, 12...
...Mowing blade, 15...Star foil, 17...Transmission case, 22...Holding cylinder, 31...Cover, 33...
...Notch.

Claims (1)

[Scope of utility model registration request] The reaping device 4 provided at the front of the machine is composed of a cutting blade 12, a grain culm pulling body 14, a star wheel 15 for raking that is inclined so that the front part is lower, a grain culm raking belt, etc. A cover 31 that covers the top surface of the star foil 15 in a harvester in which the portion of the star foil 15 that rotates diagonally downward is the non-active side and the portion that rotates diagonally upward from the front portion is the active side. A notch 33 is formed in a portion extending from the front outer side of the non-active side to the circumference of the cylinder 28 in which the vertical shaft 21 of the star foil 15 is housed, and the pulley 29 attached to the upper part of the vertical shaft 21 and the star foil 15
A raking belt 16 having a large number of lugs is stretched around a pulley disposed at the front of the notch 33, so that the raking belt 16 surrounds the outer upper surface of the notch 33 in plan view. Grain raking device of a harvester.