JPH083236Y2 - Combine harvester - Google Patents

Description

[Detailed Description of the Invention] "Industrial field of application" The present invention relates to a combine harvesting device in which a grain culm harvested by a cutting blade is scraped by a scraping auger.

[Prior Art] Conventionally, a reel for scraping grain stalks, a cutting blade, and an auger for harvesting harvested grain stalks have been provided on the platform, and the harvested grain culms are fed to the threshing section from the center of the rear part of the platform through the feeder house, and also the feeder. There is a technique in which a center finger having a plurality of fingers for sending grain culms to a house is arranged in the central portion of the auger drum of the scraping auger, and left and right spirals are arranged on the outer periphery of the auger drum on both sides of the center finger.

[Problems to be Solved by the Invention] In the above-mentioned conventional technique, the center fingers, which are attached to the outer circumference of the auger drum so that they can be freely moved in and out, are arranged on substantially the same circumference, and are cut laterally in the central direction by left and right spirals. Since the grains were moved vertically in the feeder house direction by each finger, the spacing between the spiral and each finger becomes smaller at the end of the spiral feed, and the grains sent by the spiral are lumped and pushed to the sides of the fingers. At this time, the grain culms are easily sandwiched between the spira and the fingers, and the grain culm is not smoothly transferred from the spiral to the fingers, and there is a problem that the grain culms are retained at the end of the spiral feed.

[Means for Solving the Problems] Therefore, the present invention provides a reel for scraping grain culm, a cutting blade, and an auger for scraping grain culm on the platform, and threshing the harvested grain culm from the center of the rear part of the platform through the feeder house. A center finger having a plurality of fingers for feeding the grain to the feeder house and at the center of the auger drum of the scraping auger, and left and right spirals on the outer periphery of the auger drum on both sides of the center finger. In a combine harvesting device, two pairs of left and right finger rows are formed in the center finger, and the left and right finger rows are arranged substantially parallel to the feed action surface on the feed end side of the left and right spirals. And the left and right spiral groove feed ends of the left and right spiral grooves formed by the left and right spirals. It is characterized in that the feed start ends are connected.

[Action] Therefore, the finger row is arranged parallel to the feed action surface on the feed end side of the spiral, and the feed start end of the finger row is connected to the spiral groove feed end. Even if it is broken, the culm lumps can be smoothly transferred to the finger row, and the problem of jamming the culm between the spira and the fingers, which is a conventional problem, can easily be eliminated, and the spiral causes the central part to move to the center part. Efficiently feed the collected grain culms to the feeder house without stagnation.
It is possible to easily improve the transfer performance of the harvested grain stalk scraping auger and reduce the vibration and noise generated at the portion as compared with the conventional case.

[Embodiment] An embodiment of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a development explanatory view of the scraping auger, FIG. 2 is an overall side view,
FIG. 3 is a plan view of the same, in which (1) is a machine base equipped with a traveling crawler (2) on a track frame (3),
(4) is equipped with an axial-flow screw-type handling cylinder (5) and a sorting mechanism (6) that tilts forward, backward, and high.
(7) is a threshing unit (7) is a grain tank for storing the grains of the threshing unit (4) taken out through the fried cylinder (8) which is the most fried grain conveyor, and (9) is the threshing unit (4). A mowing section installed forward and downward via an elevating cylinder (10), (11) a driver's cab having a driver's seat and a driver operating section in a driver's cab (12), and (13) a driver's cab (11). Engine on the left side,
(14) is a grain discharging auger for taking out grains in the grain tank (7).

The cutting unit (9) includes a platform (15) for taking uncut grain culm, and a feeder house connected to substantially the center of the rear part of the platform (15) to feed the cut grain culm to the threshing unit (4). (16), a weeding board (17), a reel for grain cultivation (18), and a reciprocating drive type cutting blade (1
The platform (15) is provided with a cutting grain auger (20) and a cut grain culm auger (20), and a grain culm supply chain conveyor (15) is provided inside the feeder house (16) for cutting grain culms to be taken into the platform (15). It is configured to be fed to the threshing unit (4) via 21) for threshing.

As shown in FIG. 4 to FIG. 5, two lifting cylinders (10) for lifting and lowering the reaper (9) are provided on the left and right sides of the feeder house (16). The tip of the piston rod (10a) of the cylinder (10) is connected to the left and right mounting plates (24) fixed to the upper frame (22) on the front end side and the left and right side frames (23) via the shafts (25), respectively. At the same time, the cylinder (10) is attached to the left and right fixed brackets (27) of the horizontal frame (26) interposed between the machine base (1) and the track frame (3) via shafts (28), respectively.
The base end side of is connected. As shown in the solid line state in FIG. 5, the so-called reaping support side in which the tip end side of the piston rod (10a) is located above the base end side of the cylinder (10) is located even when the reaping section (9) is at the lowest position. When the lifting cylinder (10) is attached so as to be in a tilted posture and the mowing part (9) is raised from the lowest position, the piston rod (10
The extension force of a) directly acts on the upper frame (22) and the left and right side frames (23) as upward pushing force, centering on the cutting rotation fulcrum shaft (29) at the base end of the feeder house (16). As a result, the reaper (9) is configured to be stably lifted in a well-balanced right and left without causing a loss of force. In addition, the upper frame (22) and platform (15), which have high strength during this rising motion,
By pushing up the upper mounting frame (30) on the rear end side, it is possible to reduce the strength of the entire feeder house (16), thereby reducing the weight and the cost.

As shown in FIGS. 1 and 6 to 9, the scraping auger (20) has left and right spirals (symmetrically wound in opposite directions) on the left and right outer peripheral surfaces of the auger drum (31). 3
2) (33) is installed and these left and right spirals (3
2) A plurality of center fingers for transferring the grain culms gathered in the center by the spirals (32) (33) to the feeder house (16) between the forming parts of the (33), that is, the outer peripheral surface of the center of the drum (31) ( 34), and the left and right three side phongs (35) are provided on the outer peripheral surface of the drum (31) of the left and right spiral (32) (33) forming portions.

As shown in FIGS. 6 to 7, the fingers (34)
Reference numeral (35) denotes a stationary fixed shaft 837 eccentric to the front of the rotary shaft (36) of the drum (31), which supports the base end loosely fitting tubular shaft (38) to support the fingers for rotation of the drum (31). (34)
When (35) is in a substantially front horizontal position, it is set so as to project to the maximum extent from the surface of the drum (31), and the fingers (34) (35)
Is set in a substantially rearward horizontal posture so that the drum (31) is moved into the maximum retracted state so that the fingers (34) (35) can scrape and pass the grain culms.

Next, the arrangement of the fingers (34) (35) will be described with reference to the development views of the drum (31) in FIGS. 1 and 9.
In the developed view, the drum (31) having a circumference of 360 degrees is divided into 14 equal parts, and the angle of the equal part is expressed as α (α = 360/14).

The center finger (34) is composed of seven left and right fingers (34a) (34b) arranged in a row along the left and right spirals (32) (33), respectively. And these outermost left and right fingers (34a) (34b)
Left and right spiral (32) (33) spiral groove (32a) (33
a) Place the innermost left and right fingers (34a) (34b) so that they face the feed ends at approximately the center of the fingers (34a) (34b).
Of the left and right spirals (32) and (33) on the feed end side of the feed action surfaces (32b) and (33b) and fingers (34a) and (34b). ), A certain interval (a1) is secured to prevent accidents of clogging between these spirals (32) (33) and fingers (34a) (34b).

Further, the left and right spirals (32) (33) have a mutually symmetrical phase (β1) (β2) between the outermost and innermost ends.
On the other hand, in the center finger (34), the left and right fingers (34a) and (34b) are respectively arranged on the circumferential surface of the drum (31) once at equal intervals (every angle (2α)). At the same time, the phases (θ1) and (θ2) of the fingers (34a) and (34b) at the outermost and innermost symmetrical positions are made to differ from each other by approximately 180 degrees to maintain stable dynamic balance during rotation of the auger (20). At the same time, the scraped grain culms are smoothly gathered in a state of being dispersed approximately 180 degrees in the center to prevent the occurrence of culm accidents. As is clear from the above, the reel (18) for cutting grain culm, the cutting blade (19), and the auger (20) for harvesting grain culm are provided on the platform (15), and the feeder house (from the rear center of the platform (15) ( A center finger (34) having a plurality of fingers (34a) ... (34b) for sending the cut culms to the threshing section (4) via the 16) and sending the culms to the feeder house (16). A combine in which the scraping auger (20) is arranged in the center of the auger drum (31), and left and right spirals (32) and (33) are arranged around the outer periphery of the auger drum (31) on both sides of the center finger (34). In the reaping device, two pairs of left and right fingers (34a) ... (34b) ... are formed in the center finger (34) to form left and right spirals (32) (33).
The left and right fingers (34a) are substantially parallel to the feed action surfaces (32b) (33b) on the feed end side of the above while keeping a predetermined distance.
(34b) ... Rows are arranged and left and right spirals (32)
Left and right spiral grooves (32a) (33a) formed by (33)
a) The left and right fingers (34a) ... (34b) of the center finger (34) are connected to the feed start ends of the rows.

Further, also in the side finger (35), the left and right three fingers (35a) and (35b) respectively differ in phase (θ3) by about 120 degrees, and the left and right symmetrical positions (innermost, central, Each phase (θ4) (θ5) of fingers (35a) (35b) arranged at outermost positions
(Θ6) is made to differ by approximately 180 degrees so as to maintain stable dynamic balance and reduce vibration and noise when the auger (20) rotates.

This embodiment is configured as described above, and the feeder house (16) is used when the cutting unit (9) is moved up and down.
The two raising and lowering cylinders (10) arranged on both the left and right sides of the cylinder can raise and lower the reaping section (9) in a stable manner on the left and right, and at the time of the raising operation, the piston rod (10a) of the cylinder (10) is initially loaded. Reduces the work load of the cylinder (10) that makes it possible to effectively raise the reaper (9) without directly acting on the upward pushing side and causing unnecessary loss of force. be able to. Further, the piston rod (10a) exerts a pushing force on the upper frame (22) of the feeder house (16) and the upper mounting frame (30) of the platform (15) when the cutting unit (9) is moved upward. Therefore, the strength of the entire feeder house (16) and platform (15) can be reduced without the need for additional reinforcement, and the weight and cost can be reduced.

Further, during the mowing work, the scraping auger (20) can be rotated with good left-right dynamic balance to reduce the generation of vibration and noise, while the left-right spirals (32) (33) and the side fingers ( The cut culms scraped by 35a) and (35b) are smoothly taken over by the left and right center fingers (34a) and (34b) while being fed to the central portion, and fed into the feeder house (16). Especially in this case, the left and right center fingers (34a) (34b) are the left and right spirals (32).
Spiral (34a) (34b) while running substantially parallel to (33)
The left and right fingers (34a) (34
Ensure a minimum gap (a1) between b) and
These spirals (32) (33) and fingers (34a) (34
It is possible to improve the transportability of the grain culms according to b).

"Effects of the Invention" As is apparent from the above embodiments, the present invention provides the reel (18) for scraping crops, the cutting blade (19), and the auger (20) for scraping crops on the platform (15), A plurality of fingers (34a) for feeding the cut culms to the threshing section (4) from the center of the rear part of the platform (15) through the feeder house (16) and for feeding the culms to the feeder house (16).
A center finger (34) having (34b) ... is arranged in the central part of the auger drum (31) of the scraping auger (20), and left and right around the outer periphery of the auger drum (31) on both sides of the center finger (34). In a combine harvester in which the spoilers (32) (33) are arranged, two pairs of left and right fingers (34a) ... (34b) ... rows are formed in the center finger (34), and the left and right spirals (32) (33) The left and right fingers (34a) ... (34b) ... rows are arranged substantially in parallel to the feed action surfaces (32b) (33b) on the feed end side, while the left and right spirals (32) ( The left and right spiral grooves (32a) (33a) formed by 33) are connected to the left and right fingers (34a) ... (34b) of the center finger (34) ... On the feed end side of (33), slide the flap parallel to the feed action surface (32b) (33b). Nga (34a) ... (34b) ... is arranged a column, and spiral grooves (32a) (33a) feed end to the finger (34a) ... (34b) ...
Spiral (32) (33) because the feed end of the row is connected
Even if the lumps of cut culm are sent by the machine, the lumps of culms can be smoothly transferred to the fingers (34a) ... (34b) ... rows, and the conventional spirals (32) (33) and fingers (34a) ... (34b) ... can easily eliminate the problem of jamming the grain culms by clogging it, and the feeders can be retained without retaining the grain culms collected in the center by the spirals (32) (33). It is possible to efficiently feed to the house (16), and it is possible to easily improve the transfer performance of the harvested grain sprouting auger (20) and reduce the vibration and noise generated in the part compared with the conventional one. is there.

[Brief description of drawings]

FIG. 1 is a development explanatory view of a scraping auger part, FIG. 2 is an overall side view, FIG. 3 is a plan view of the same, FIG. 4 is a plan explanatory view of a mowing lifting part, and FIG. FIG. 6 is a side view of the scraping auger, FIG. 7 is a partial cross-sectional view of the same, FIG. 8 is a partial front view of the same, and FIG. (19) …… Cutting blade (20) …… Scraping auger (32) (33) …… Spiral (34) …… Center finger (a1) …… Interval

Claims (1)

[Scope of utility model registration request] 1. A reel (18) for cutting grain culm, a cutting blade (19), and an auger (20) for reaping grain culm are provided on a platform (15), and a feeder house (16) is provided from the rear center of the platform (15). The center finger (34) having a plurality of fingers (34a) ... (34b) for feeding the harvested grain culm to the threshing section (4) through the feeder and for feeding the grain culm to the feeder house (16) is scratched by the scraper. Included auger (20) auger drum (31)
It is arranged in the center of the center finger (34), and the left and right spirals (32) (3) are attached to the outer periphery of the auger drum (31) on both sides of the center finger (34).
In the combine harvester that arranges 3), two pairs of left and right fingers (34a) ... (34b) ... are formed in the center finger (34), and the feed ends of the left and right spirals (32) (33) are fed. The left and right fingers (34a) ... (34b) ... substantially parallel to the action surfaces (32b) (33b) while keeping a predetermined distance.
The rows are arranged, and the left and right fingers (34a) of the center finger (34) are provided at the feed ends of the left and right spiral grooves (32a) (33a) formed by the left and right spirals (32) (33).
4b)… A combine harvester characterized by connecting the feed start ends of the rows.