JP2789718B2 - Second harvester in combine harvester - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a second reaping device in a combine.

[Conventional technology]

2. Description of the Related Art Conventionally, there has been a mowing part of a compaine provided with a first cutting blade on a front side and a second cutting blade on a rear side.

In this method, a first cutting blade cuts and harvests the tip of a grain stalk standing upright in a field, and a second cutting blade cuts off the root portion of the stalk left behind.

[Problems to be solved by the invention]

In the prior art, when the remaining culm left behind by the first cutting blade is cut by the second cutting blade, the remaining cutting culm is not easily postured by the second cutting blade. I can't pay. In many cases, the posture of the residual culm is not good, and this causes the failure of the mowing by the second cutting blade,
There was a drawback that the mowing marks were disturbed.

In addition, the grain stalks that have been brushed by the second cutting blade accumulate on the second cutting blade, causing a reduction in the cutting ability of the second cutting blade.

[Means for solving the problem]

The present invention employs the following technical suitable means in order to solve the above-mentioned problems.

That is, a threshing device 2 provided above the traveling device 1 and a reaping unit 3 provided in front of the threshing device 2 so as to be vertically movable.
A first cutting blade 4 provided on the front side of the cutting unit 3 and a second cutting blade 5 provided on the rear side; and a rotation axis centered in the left-right direction, located above the second cutting blade 5. A rotating body 6, wherein when the rotating body 6 rotates, the rotating body 6 is configured to press the upper part of the grain culm left uncut by the first cutting blade 4 rearward. This is a second reaping device.

[Actions and Effects of the Invention]

The traveling device 1 is driven to move the machine forward, and the first cutting blade 4 cuts the tip of the culm to be planted in the field, threshing and harvesting. Then, the root of the culm left behind in the field is cut by the second cutting blade 5. At this time, the remaining grain culm is pressed rearward by the rotation of the rotating body 6 provided above the second cutting blade 5, so that the remaining grain culm is in a position where it can be easily cut by the second cutting blade 5. Pressed to 5. This allows the second mowing blade 5 to cut off the remaining culm culm smoothly, and also makes the mowing marks smooth.

The cereal stem cut by the second cutting blade 5 is a rotating body 6.
Is sent out behind the second cutting blade 5 by the rotation of
There is no accumulation on the upper part of the second cutting blade 5. As a result, a smooth operation can be performed without lowering the cutting ability of the second cutting blade 5.

〔Example〕

 An embodiment of the present invention will be described with reference to the drawings.

Reference numeral 7 denotes a machine frame, 1 denotes a traveling device provided at a lower portion of the machine frame 7, 2 denotes a threshing device provided at an upper portion of the machine frame 7, and 3 denotes a mowing unit provided in front of the threshing device 2. The cutting section 3 is mainly composed of a cereal stem guiding frame 8, provided with a raking reel 9 above the front side, and a first cutting blade 4 below the raking reel 9.

10 is an elevator from the mowing unit 3 to the threshing room of the threshing device 2, 11 is a weeding body, 12 is a forced weeding device provided behind the weeding body 11, 13 is a grain culm conveyer, and 14 is a mowing unit 3. It is a vertical moving cylinder of the mowing part to be moved up and down.

Thus, a second cutting blade 5 described in detail below is provided between the rear surface of the grain stem guiding frame 8 and the front end of the traveling device 1.

A support frame 15 in the left-right direction is provided on the rear surface of the cereal stem guiding frame 8. The support frame 15 is
Of the left end bent portion 16 is fixed to the left vertical rod 17 on the rear surface, and the right end bent portion 18 is fixed.
Is fixed to the vertical rod 19.

A side position vertical axis tube 20 is fixed to the left end bent portion 16, and a center of gravity position vertical axis tube 21 is fixed to the right end bent portion 18. A vertical position side support rod 22 in the vertical direction is fitted to the side position vertical axis cylinder 20 so as to be slidable up and down. A center-of-gravity position vertical support rod 23 is fitted to the center-of-gravity position longitudinal axis tube 21 so as to be vertically slidable.

The lower end of the side position vertical support rod 22 is on the left side of the second cutting blade frame 24 of the second cutting blade 5, and the lower end of the center of gravity position vertical support rod 23 is the left and right sides of the second cutting blade frame 24. Install each center of gravity position.

A lower end portion of a mounting arm 25 rising upward is fixed to the upper surface of the support frame 15 on the right bent portion 18 side. The upper end of the mounting arm 25 is bent toward the vertical support rod 23 at the position of the center of gravity so as to face the rear position of the vertical support rod 23 at the position of the center of gravity. The upper end of the second cutting blade vertical movement cylinder 26 is attached to the upper end of the mounting arm 25. The lower end of the rod of the second cutting blade vertical moving cylinder 26 is attached to the lower end of the vertical support rod 23 at the center of gravity.

A drive mechanism for the second cutting blade 5 is provided on the right side of the rear surface of the cereal stem guiding frame 8. Reference numeral 27 denotes a drive shaft.
The belt 31 is looped between the driving pulley 28 of the above and the passive pulley 30 attached to the gear box 29. Gear box 29
The upper end of the transmission shaft 32 which can be extended and contracted is attached to the upper end. The transmission shaft 32 is configured such that the upper end of a lower shaft 34 is inserted into an upper shaft cylinder 33 so as to be vertically movable, and the upper shaft cylinder 33 and the lower shaft 34 transmit rotation by spline coupling. Lower shaft 34
Is indirectly fixed to the left end of the second cutting blade frame 24, and the transmission shaft 32 has the same action as the side position vertical support rod 22 and the center of gravity position vertical support rod 23.

A crank 35 is attached to the lower end of the lower shaft 34, and one arm 37 of a bell crank 36 is attached to the crank 35,
The other arm 38 of the bell crank 36 is attached to the sliding blade of the second cutting blade 5.

39, 40 are left and right sensors for controlling the height of the second cutting blade 5, and a rod 41 which moves up and down by the rotation of the left and right sensors 39, 40 is vertically movably inserted into the barycentric position vertical support rod 23, A switch is provided on the upper part of the vertical support rod 23 at the center of gravity, and the switch is turned on and off by the up and down movement of the rod 41 to control the height of the second cutting blade 5.

Thus, a rotating body 6 having substantially the same width as the left and right sides of the second cutting blade 5 is provided above the second cutting blade 5. The rotating body 6 is formed by providing circumferentially pressing wing pieces 43 at predetermined intervals in the left-right direction on the outer peripheral surface of the cylinder 42 in the left-right direction. Further, the rotating body 6 may be of a star wheel shape in a side view. Shafts 44 are provided on both left and right sides of the cylinder 42, and both right and left ends of the shafts 44 are mounted on mounting portions 45 provided from the second cutting blade frame 24 by being mounted on the shafts.

A gear 46 is provided at a position near the lower end of the lower shaft 34 on the side where the drive mechanism of the second cutting blade 5 is provided, and meshes with a gear 47 provided at one end of the shaft 44 to drive and rotate the rotating body 6. .
48 is a cover for covering the gears 46 and 47.

The rotation of the rotating body 6 is performed in such a manner that the uncut grain culm whose ears have been clipped by the first cutting blade 4 is rotated in a direction of sending the same backward, and the rotation speed follows the increase or decrease of the forward speed of the body by the traveling device 1. Is configured to be increased or decreased.

The body is advanced, the culm to be planted in the field is weeded by the weeding body 11, the scraping reel 9 is rotated to rake the culm, and the stalk is slid by the sliding blade of the first cutting blade 4. Only the tip of the stalk is harvested and joined to the beginning of the elevator 10 by the cereal culm conveyer 13,
It is sent to the threshing apparatus 2 by the elevator 10 and threshed.
Therefore, only the tip of the grain culm is supplied to the threshing apparatus 2, and the load on the threshing apparatus 2 is reduced.

When the body is further advanced, the second cutting blade 5 located behind the first cutting blade 4 cuts off the culm stock left behind in the field. At this time, the remaining grain culm is forcibly pushed toward the second cutting blade 5 by the pressing wing pieces 43 on the outer peripheral surface of the cylinder 42 of the rotating body 6. Therefore, the remaining culm becomes a favorable posture by the rotation of the rotating body 6, and smoothes the mowing by the second cutting blade 5. The grain culm cut by the second cutting blade 5 is sent out behind the second cutting blade 5 by the pressing wings 43 of the rotating body 6 and discharged to the field. Thereby, accumulation of grain culm on the second cutting blade 5 can be prevented, and a smooth work can be performed without lowering the cutting ability of the second cutting blade 5.

[Brief description of the drawings]

BRIEF DESCRIPTION OF THE DRAWINGS The drawings show an embodiment of the present invention. FIG. 1 is a side view of a mowing part, FIG. 2 is a rear view of the same, and FIG. DESCRIPTION OF SYMBOLS 1... Traveling device 2... Threshing device 3... Cutting section 4... First cutting blade 5... Second cutting blade 6... Rotating body 7. Grain stalk guiding frame 9 ... Scraping reel, 10 ... Elevator 11 ... Weeding body, 12 ... Forced weeding device 13 ... Grain stalk collecting and feeding device, 14 ... Cutting unit vertical moving cylinder 15 ... Support Frame, 16 Left bent part 17 Vertical rod, 18 Right bent part 19 Vertical rod, 20 Side position vertical axis tube 21 Center of gravity position vertical axis tube, 22 Side position Vertical support rod 23 Center of gravity position Vertical support rod 24 24 Second cutting blade frame 25 Mounting arm 26 Vertical cutting blade vertical movement cylinder 27 Drive shaft 28 Driving pulley 29 Gear box, 30 Passive pulley 31 Belt 32 Transmission shaft 33 Upper shaft cylinder 34 Lower shaft 35 Crank 36 Bell crank 37 Arm 38 Arm 39 …… Left Sen , 40 ...... right sensor 41 ...... rod, 42 ...... cylindrical 43 ...... pressing wings, 44 ...... shaft 45 ...... attachment portion, 46 ...... gear 47 ...... gear, 48 ...... cover

Claims (1)

(57) [Claims] 1. A threshing device 2 provided above a traveling device 1, a cutting unit 3 provided vertically movable in front of the threshing device 2, and a first cutting blade 4 provided in front of the cutting unit 3. And a second cutting blade 5 provided on the rear side, and a rotating body 6 having a rotation axis in the left-right direction, which is located above the second cutting blade 5, and the rotating body 6 rotates when it rotates. A second harvesting device in a combine, characterized in that the upper part of the culm left behind by the first cutting blade 4 is pressed rearward.