JPH0620355Y2 - Winding prevention plate for combine auger - Google Patents

Description

[Detailed Description of the Invention] (a) Field of Industrial Application The present invention relates to a winding prevention plate for a combine auger.

(B) Conventional technology Conventionally, a combine auger has a scraping auger mounted behind a cutting blade of a mowing unit in parallel with the cutting blade, and a grain culm cut by the cutting blade is drumed by the auger. The left and right spiral blades convey it to the front of the feed chamber that is connected to the rear of the mowing section, and then move the grain culms into the feed chamber by a plurality of retractable fingers that are provided in front of the feed chamber of the drum. It is configured to throw in.

(C) Problems to be solved by the invention However, when the harvested grain culm is too long or soft, the grain culm is wound around the portion provided with the finger of the drum to convey the grain culm, In addition, there is a drawback that it impedes charging into the feed chamber.

In order to eliminate this drawback, it was considered that a winding prevention plate is provided on the outer circumference of the drum so as to increase the apparent diameter of the drum to prevent the winding of the grain culm. The winding prevention plate may cause problems such as scattering the grain culms to the outside of the mowing section, or inhibiting the actions of the left and right spiral blades and fingers.

(D) Means for solving the problem In the present invention, a cutting auger is mounted on the rear side of the cutting blade of the mowing section in parallel with the cutting blade, and the grain culm cut by the cutting blade is also scraped. The left and right spiral blades on the drum of the auger convey it to the front of the feed chamber that is connected to the rear of the mowing section, and the position of the retractable fingers on the drum that corresponds to the front of the opening of the feed chamber. In a combine harvester auger configured to throw a grain culm into a feed chamber by a plurality of retractable center fingers provided in, a wrap in front view with at least the left and right outermost fingers of the plurality of center fingers. In addition, a winding prevention plate is projected on the outer periphery of the drum at a position where it overlaps with the inner ends of the left and right spiral blades in a front view, and the winding prevention plate rotates from the base end to the tip of the drum attachment. Direction to pair A receding angle is provided, and the protrusion height from the drum outer peripheral surface is regulated within a range of 1/3 to 1/2 of the maximum protrusion height of the fingers from the drum outer peripheral surface. It is intended to provide a winding prevention plate for the built-in auger.

(E) Action / Effect According to this invention, the winding prevention plate attached to the outer periphery of the drum wraps at least the left and right outermost fingers of the plurality of center fingers in a front view, and the left and right spiral blades. Since the winding prevention plate is provided on the outer periphery of the drum at the position where it is wrapped in front view with the inner end portion of the winding prevention plate, the winding prevention plate does not hinder the conveying action of the grain stem by the left and right spiral blades, and Since the winding prevention plate has a receding angle with respect to the drum rotation direction from the base end to the end attached to the drum, the grain stem can be pushed to the outside of the drum to assist the scraping action of the retractable finger. it can.

Also, the protrusion height of the winding prevention plate from the drum outer peripheral surface is 1/3 of the maximum protrusion height of the fingers from the drum outer peripheral surface.
By restricting to a range of ~ 1/2, it prevents the above-mentioned action of pushing the culm to the outside of the drum from becoming excessive, and prevents the culm from bouncing upward or forward. can do.

(E) Embodiment An embodiment of the present invention will be described in detail with reference to the drawings. In FIG. 1, (A) shows a combine, and a body frame (2) is provided above a traveling part (1) composed of a pair of left and right crawlers. Is installed,
A threshing section (3) and a sorting section (4) are arranged vertically on the left side of the upper surface of the frame (2), on the right side there is an operating section (5) in the front and a Glen tank (6 ) Is provided.

Further, in front of the fuselage frame (2), the feed chamber (7)
The mowing section (8) is vertically connected via the.

The feed chamber (7) is provided between the front part of the threshing section (3) on the left side of the machine and the cutting section (8).
(7) is offset to the left from the aircraft centerline.

The mowing part (8) connects a case (9) with an open top to the front end of the feed chamber (7), and the inside of the case (9) and the feed chamber
While communicating with the inside of (7) through the opening (19),
The scraping auger (10) is horizontally mounted inside the case (9) and rotated by the drive mechanism (11).
A cutting blade (12) is connected to the front end of the cutting blade (12), a grass plate (13) is arranged in front of the cutting blade (12), and a reel tine (14) is arranged above.

As shown in FIGS. 2 and 3, the scraping auger (10) includes a drum (15) connected to the drive mechanism (11) and left and right spiral blades (16) protruding from the outer periphery of the drum (15). (17) and a plurality of retractable fingers (18-1) (18-2) (18-3) (18-4) (18-) provided at the front position of the feed chamber (7) of the drum (15). The left and right spiral blades (16) and (17) are respectively provided from the left and right ends of the case (9) to a slightly inner side in front of the opening (19). In 17), the winding direction is opposite. Further, since the feed chamber (7) is offset to the left, the left spiral blade (16) has a smaller width than the right spiral blade (17).

Retractable fingers (18-1) (18-2) (18-3) (18-4) (18-m)
Insert a finger insertion hole (20) on the outer periphery of the drum (15), insert a bushing (21) into the insertion hole (20), and insert the finger body (22) into the bushing (21). The inner end (22a) of the finger body (22) to an eccentric crank pin (23) below the fixed crank (23) inserted in the drum (15).
It is supported by a).

Therefore, while the finger body (22) rotates with the drum (15), the outer end (22b) of the finger body (22) is substantially flush with the outer surface of the bushing (21) at the upper position, and at the lower position. It is configured to project from the outer peripheral surface of the drum (15) by about twice the eccentric amount.

The fixed crank (23) is an assembly type, and the crank pin (23a) and the crank journal (23b) axially supported on the center line of the drum (15) are connected via a crank web (23c). It is configured and one end is fixed to the mowing part (8).

Such retractable fingers (18-1) (18-2) (18-3) (18-4) (1
8-m) is the left and right side fingers (18-1) (18-2) provided at the left and right ends of the drum (15) and the opening (1) of the feed chamber (7).
9) a plurality of center fingers (18-3) (18-4) arranged substantially evenly distributed on the drum (15) portion corresponding to the front of 9),
Right side finger (18-2) and center finger (18-4)
It is composed of an intermediate finger (18-m) provided between and, the left and right spiral blades (16) (17) inner end portions (16a) (17a), and a plurality of center fingers (18-3) ( It partially overlaps with the part where 18-4) is arranged.

And the drum of this left and right overlap part (25) (25 ')
(15) Winding prevention plates (26a) and (26b) are provided on the outer periphery, and the winding prevention plates (26a) and (26b) are provided with a plurality of center finger fingers as shown in FIGS. 3 and 4. (18-3) Fingers (18-3a) (18-4a) arranged at least on the left and right outermost sides of (18-4) and the third finger (18-3c) inward while wrapping in front view
It is arranged on the outer peripheral surface of the drum (15) extending to (18-4c).

Then, at least one of the winding prevention plates (26a) and (26b) is provided at a position immediately before facing the rotation direction of the center fingers (18-3) and (18-4). In the example, the winding prevention plate (26b) is provided immediately in front of the center finger (18-4) in the rotation direction.

Therefore, when the center finger (18-4) corresponding to the same winding prevention plate (26b) is sunk in the radial direction of the drum (15) and the grain culm is thrown into the feed chamber (7), the same winding prevention is performed. Since the plate (26b) has already passed the position of the center finger (18-4) at this time, it does not hinder the action of inserting the finger, such as bouncing the culm to the outside.

It should be noted that FIG. 4 is in a state of 3/4 rotation for easier understanding.

By the way, when attaching the winding prevention plates (26a) and (26b), the base portion (27a) of the mounting plate (27) for attaching the winding prevention plates (26a) and (26b) is attached to the outer peripheral surface of the drum (15). Fixed to the tip
(27b) is bent, and substantially rectangular winding prevention plates (26a) and (26b) are connected to the tip portion (27b).

Further, the winding prevention plates (26a) and (26b) are provided with a receding angle (θ) of about 30 ° with respect to the rotation direction of the drum (15). This pushes the culm to the outside of the drum (15) and assists the retracting action of the retractable fingers (18-1) (18-2) (18-3) (18-4) (18-m). be able to.

Furthermore, the protrusion height (H) of the anti-winding plates (26a) and (26b) from the outer peripheral surface of the drum (15) can be adjusted by using the retractable fingers (18-1) (18-2) (18
-3) (18-4) (18-m) 1 / of the maximum protruding height (h) from the outer peripheral surface
The range is 3 to 1/2 to prevent the above-mentioned action of pushing the grain culms to the outside of the drum (15) from becoming excessive, and preventing the problem that the grain culms bounce upward or forward. is doing.

The embodiment of the present invention is configured as described above, and the cutting blade
The grain culms harvested in (12) are scraped by the left and right spiral blades (16) and (17) of the scraping auger (10) in front of the feed chamber (7) of the case (9), and the retractable center finger. (18-3) (18-4) and the left and right winding prevention plates (26a) (26b) are charged into the feed chamber (7).

At this time, the winding prevention plates (26a) (26b) are attached to the left and right spiral blades (16).
While wrapping with the inner end (16a) (17a) of (17) in a front view,
Moreover, the left and right outermost fingers (18-3) of the center fingers (18-3) (18-4) provided in front of the feed chamber (7) are
a) Wrap with (18-4a) in front view and at least
Since one of the winding prevention plates (26a) (26b) is arranged at the position immediately before the left and right outermost fingers (18-3a) (18-4a) in the rotation direction, the feed chamber ( In parts other than the front of 7), the action of the left and right spiral blades (16) (17) is not hindered, and the grain culms are not splashed outside.

In addition, in the front of the feed chamber (7), the grain culm is prevented from being wrapped and the receding angle (θ) is provided, so that the grain culm pushing action of pushing the grain culm to the outside of the drum (15) works. This assists the retracting action of the retractable center fingers (18-3) (18-4).

Also, the protruding height (H) of the left and right winding prevention plates (26a) and (26b) from the outer peripheral surface of the drum (15) is retractable finger (18-1) (18-2)
(18-3) (18-4) (18-m) by the maximum protruding height (h) of 1/3 to 1/2, the grain culm extrusion action becomes excessive, It prevents the problem that the grain culm is bounced upward or forward.

[Brief description of drawings]

FIG. 1 is an overall side view of a combine having an anti-winding plate according to the present invention. FIG. 2 is a partially cutaway plan view of the scraping auger. FIG. 3 is a sectional view taken along the line I-I in FIG. 2. FIG. 4 is a sectional view taken along line II-II in FIG. 2. (A): Combine (H): Projection height (h): Maximum projection height (θ): Sweep angle (7): Feed chamber (8): Mowing part (10): Scratch auger (12): Mowing Blade (15): Drum (16): Left spiral blade (16a): Inner edge (17): Right spiral blade (17a): Inner edge (18-1): Left side finger (18-2): Right Side finger (18-3): Center finger (18-4): Center finger (18-3a): Left outermost finger (18-4a): Right outermost finger (19): Opening (26a): Winding prevention plate (26b): Winding prevention plate

Claims (1)

[Scope of utility model registration request] 1. The cutting blade (1) is provided behind the cutting blade (12) of the cutting unit (8).
Left and right spiral blades (16) (16) with the scraping auger (10) mounted on the drum (15) of the scraping auger (10) It is conveyed to the front of the feed chamber (7) that is connected to the rear of the mowing section (8) at 17) and the retractable fingers (18-1) (18-2) (18) provided on the drum (15). -3) (18-4) (18-m), a plurality of retractable center fingers (18-3) provided at positions corresponding to the front of the opening (19) of the feed chamber (7)
(18-4) in the auger (10) of the combine (A) configured to throw the culm into the feed chamber (7), the plurality of center fingers (18-3) (18-4) home,
Wrap with at least the left and right outermost fingers (18-3a) (18-4a) in front view, and also with the inner ends (16a) (17a) of the left and right spiral blades (16) (17) in front view. Drum in position
Winding prevention plates (26a) and (26b) are provided on the outer periphery of (15) in a protruding manner, and the winding prevention plates (26a) and (26b) extend in the drum rotation direction from the base end to the tip of the drum (15). In addition to providing a receding angle (θ), the protrusion height (H) from the outer peripheral surface of the drum (15) is set to the above-mentioned fingers (18-1) (18-2) (18-3) (18-4) (18- (1) A winding prevention plate for a combine auger that is regulated within a range of 1/3 to 1/2 of a maximum protruding height (h) from the outer peripheral surface of the drum (15) of m).