JPH10295135A - Combine - Google Patents

Abstract

(57) [Summary] [PROBLEMS] To secure the mounting strength of the middle cutting blade (60) and the receiving stand (63) to prevent interference with the left and right cutting blades (9) (9). SOLUTION: Left and right cutting blades (9) (9) are arranged on substantially the same straight line.
The middle cutting blade (60) is arranged above the joining end of the left and right cutting blades (9) and (9), and the middle cutting blade (9) is mounted on one of the right and left cutting blades (9). Blade (60)
Is fixed, the pedestal (63) of the middle cutting blade (60) is fixed to the pedestal (52) of the other cutting blade (9), and each pedestal (51) of the left and right cutting blades (9) and (9) is fixed. And (52) are fixed to the cutting frame (12).

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a combine for continuously cutting and threshing grain culms.

[0002]

Conventionally, the cutting width is long in a large reaping section such as for 5-row or 6-row cutting.
There is a problem that one cutting blade is easily deformed, and the left and right cutting blades are divided into right and left to prevent deformation of the cutting blade. There is a problem that mud or straw debris sticks to the joining portion of the cutting blade, and the cutting operation is likely to be defective. In addition, the cutting blade crank mechanism that transmits the driving force to the cutting blade is arranged on the same plane, so that a vertical component driving force is easily generated due to positional displacement after assembly of the parts, and the cutting blade crank mechanism is easily deformed and damaged. There is a defect.

[0003]

SUMMARY OF THE INVENTION The present invention provides a combine harvester in which left and right cutting blades are slidably reciprocated on substantially the same straight line, wherein a middle cutting blade is disposed above a joining end of the left and right cutting blades. Fix the middle cutting blade to one of the left and right cutting blades, fix the middle cutting blade to the rest of the other cutting blade, and cut the mating end of each of the left and right cutting blades to the cutting frame. In addition to securing the mounting strength of the middle cutting blade and the pedestal, it is possible to easily prevent interference with the left and right cutting blades, prevent the deformation of the middle cutting blade and the pedestal, and reduce sliding resistance. Can be easily achieved.

Further, a gap is provided between the joining ends of the left and right cutting blades, which is larger than the width of one blade, so that mud or straw chips can be smoothly dropped from between the joining portions of the left and right cutting blades. The mowing operation can be prevented from becoming defective.

[0005] Further, since the crank yoke is connected to the cutting blade crank for driving the cutting blade via the self-aligning bearing, it is possible to easily prevent the vertical displacement after the mounting of the cutting blade crank and the like. Thus, it is possible to easily prevent deformation and damage of the cutting blade crank mechanism due to generation of a driving force in the direction.

[0006]

Embodiments of the present invention will be described below in detail with reference to the drawings. Fig. 1 is an overall side view of the combine, Fig. 2
Is a plan view of the same, in which (1) is a track frame on which the traveling crawler (2) is mounted, (3) is a machine frame installed on the track frame (1), and (4) is a feed chain (5). Threshing unit, which is a threshing machine having a handling drum (6) and a processing drum (7) built therein, and a cutting blade (9) having a cutting blade (9) and a culm transport mechanism (10). Department, (11)
Is a hydraulic cutting cylinder for raising and lowering the cutting unit (8) via the cutting frame (12), and (13) is a straw chain (14).
A straw cutter having a terminal end, (15) a grain tank for carrying the grains from the threshing unit (4) through a fryer (16), and (17) a machine for grain from the tank (15). A discharge auger to be carried out, (18) an operation cabin provided with an operation section (19) and a driver's seat (20), and (21) an engine provided below the operation cabin (18), for continuously feeding grain culms. It is configured to cut and thresh.

Further, as shown in FIGS. 4 and 5, a raising case (2) for 6 rows having raising tines (23) for raising uncut culms which are taken in through weeding plates (22).
4) ..., a six-stroke star wheel (25) and a scraping belt (26) that scrape the stem side of the raised grain stalk, and a cutting blade that cuts the scraped grain stem (S). 9) and the lower right transport chain (2
7) and the upper right transport tine (28), and the central lower transport chain that joins the cut culm of the central two rows to the rear lower right transport chain (27) and the vicinity of the feed intermediate position of the upper right transport tine (28). (29) and the upper center transport tine (3
0) and the cut culm for the left two rows are transported to the lower right transport chain (2
7) and a lower left transport chain (31) and an upper left transport tine (32) which join near the feed end position of the upper right transport body (28); and 6 which merges with the feed end of the lower right transport chain (27). A vertical transport chain (33) for inheriting and transporting the root side of the harvested grain culm of the row, and the upper right transport tine (2)
8) a rear upper transport tine (34) for transporting the spike end side of the cut stalk culm for 6 rows that joins the feed end to the threshing unit (4);
A chain before auxiliary transfer (35) and a chain after auxiliary transfer (3) which are provided at the feed end portion of the vertical transfer chain (33) and carry over the harvested culm in a proper posture to the feed chain (5).
6) is provided in the cutting section (8) for cutting 6 rows, the cut and harvested culm for 6 rows is inherited and joined to the vertical transport chain (33), supplied to the feed chain (5), and threshed. It is composed.

A raising drive pipe (37) is erected on the mowing frame (12), and a raising drive case (38) is attached to the upper end of the pipe (37).
The driving force is transmitted to each raising case (24)... As a set of two lines via a pulley, and a raising conveyance tine (39) is attached to the raising driving case (38). The tip side is configured to be passed on to the rear tines (28), (30), and (32) by the three tines (39) for six rows.

Further, as shown in FIG. 5, the driving force of the engine (21) is transferred to the input shaft (4) of the counter case (40).
1) to transmit the threshing driving force to each part such as the handle cylinder (6) of the threshing unit (4) via the counter case (40), and to transmit the right and left traveling crawlers (2) and (2) to the transmission case (42). ) Is transmitted from the counter case (40). Also, the constant speed driving force from the counter case (40) and the vehicle speed tuning driving force from the transmission case (42) are transmitted to the cutting single shaft (43), and the cutting single shaft (43) is connected to the cutting double shaft (44). The harvesting three shafts (44) are connected to each other via a shaft, and the three shafts (44) are connected to the raising shaft (47) via the raising input shaft (46).

Then, the chain (36) is driven after the auxiliary conveyance through the cutting single shaft (43), and the belt (2) is driven into the star wheels (25) (25) for the right two rows.
6) (26), the right transport chain (27) and the transport tine (28), the vertical transport chain (33), the rear upper transport tine (34), and the chain before the auxiliary transport (35) Drive through). Also, the left and right cutting blade input shafts (48) and (48) are connected to the three cutting shafts (45) to drive the left and right cutting blades (9) and (9), which are divided into right and left, respectively. Minute star wheel (25) ... and scraping belt (26) ..., middle and left transfer chains (29) (3)
1) and the transport tines (30) and (32) are driven via the raising input shaft (46). In addition, each of the raised tines (23) for six rows and three raised transport tines (39) ...
Is driven through the raising shaft (47), and while maintaining the minimum speed by the constant speed driving force of the counter case (40), the traveling speed and the vehicle speed tuning driving force of the transmission case (42) are controlled. The mowing unit (8) is configured to be driven at the synchronized speed.

Further, FIGS. 6 and 7 are enlarged explanatory views of the joining portion of the left and right cutting blades (9) and (9). To fix the cutting blade frame (50) integrally, and attach the mating ends of the left and right cradle (51) (52) to the cutting blade frame (50).
With bolts (53) and (53) fixed to the
1) The left and right cutting blades (9) and (9), which are bolted and fixed to the left and right knife bars (55) and (56), are fixed with the left and right receiving blades (54) and (54) on the upper surface of the (52). 5
4) (54) slidably mounted on the top surface, and the pedestal (51)
The cutting blade (9) is supported on the upper surface of the receiving blade (54) by a holding plate (57) which is bolted and fixed to (52). Also,
The left end side of the middle knife bar (58) is fixedly fastened to the left knife bar (55) by bolts (59), and three middle cutting blades (60) are fastened and fixed to the middle knife bar (58) by bolts (61). An intermediate support (63) integrally formed with a plurality of intermediate receiving blades (62) is provided, and a holding plate (64) and an intermediate support (6) are formed.
3) Bolt (65) (6)
5) The bolt (66) fixed to the right cradle (51) is fixed and the right side of the middle cradle (63) is bolted (67) to the head of the bolt (66) fixed to the right cradle (51).

The spacing (A) between the joining portions of the left and right cutting blades (9) is formed to be about twice as large as the blade width (B) of one cutting blade (9). The mounting interval (A) of the left and right cutting blades (9) is substantially equal to the width of the two middle cutting blades (60) and (60). A right edge of the middle receiving blade (60) is disposed almost immediately above a left edge of the right receiving blade (54);
The joining portion of the left and right cutting blades (9) and (9) is closed by the middle cutting blade (60), and a tapered surface (68) is formed on the upper surface of the left end of the right knife bar (56). The right knife bar (56) is easily inserted into the side.

As is apparent from the above description, in the combine in which the left and right cutting blades (9) and (9) are slidably reciprocated on substantially the same straight line, the right and left cutting blades (9) and (9) are disposed above the mating ends thereof. A middle cutting blade (60) is provided, and the middle cutting blade (60) is fixed to one of the left and right cutting blades (9).
Both ends of the receiving blade (63) of the middle cutting blade (60) are fixed to the left and right receiving trays (51) and (52) of (9), and the receiving trays (51) and (52) of the left and right cutting blades (9) and (9). Is fixed to the cutting blade frame (50) of the cutting frame (12), and the mounting strength of the middle cutting blade (60) and the receiving stand (63) is ensured to secure the right and left cutting blades (9), (9). ) To prevent interference with the middle cutting blade (60).
In addition to preventing deformation of the receiving stand (63) and reducing sliding resistance, a large gap is provided between the joining ends of the left and right cutting blades (9) and (9), which is larger than one blade width. Cutting blade (9)
(9) It is configured such that mud or straw waste is smoothly dropped from between the joining portions, and a mowing operation failure is prevented from occurring.

Further, as shown in FIG. 8, a cutting blade drive shaft (69) is connected to the cutting blade input shaft (48), and a cutting blade arm (70) is fixed to the upper end of the drive shaft (69). The crank yoke (72) is connected to the blade arm (70) via the self-centering bearing (71), and the cutting frame (12) is connected to the cutting frame (12) via the fulcrum shaft (73).
4) The middle is rotatably mounted, one end of the cutting blade crank (74) is connected to the cutting blade (9) via the engagement arm (75), and the self-aligning bearing is connected to the other end of the cutting blade crank (74). The crank yoke (77) is connected via (76),
The crank yokes (72) and (77) are connected by a crank rod (78), and the cutting blade arm (70)
The cutting blade crank (74) and the crank rod (78) are cranked on substantially the same plane by one-way rotation so that the cutting blade (9) reciprocally slides left and right.

As is apparent from the above, the crank yoke (77) is attached to the cutting blade crank (74) for driving the cutting blade (9).
Are connected via a self-centering bearing (76), and the vertical misalignment after mounting the cutting blade arm (70) and the cutting blade crank (74) to the crank yokes (72) (77) is automatically centered. The bearings (71) and (76) are used to prevent breakage of the crank rod (78) and the like due to generation of a vertical driving component and deformation and damage of the cutting blade crank (74) mechanism.

FIG. 9 shows the structure of a cutting section (8) for five-row cutting. In the six-row cutting structure shown in FIG. 5, the third star wheel (25) from the right and the scraping belt (2) are used.
By omitting 6) and omitting the one-row raising tine (23) on the right side, the 5-row cutting structure shown in FIG. 9 can be constructed using the 6-row cutting structure shown in FIG. The part of the reaping part (8) is shared by the and the six-row cutting, so that the manufacturing cost can be reduced and maintenance parts management can be simplified.

[0017]

As is apparent from the above embodiments, the present invention relates to a combine harvester in which left and right cutting blades (9) and (9) are slidably reciprocated on substantially the same straight line.
The middle cutting blade (60) is disposed above the mating end of the above, and the middle cutting blade (60) is fixed to one of the left and right cutting blades (9).
The middle cutting blade (60) is attached to the receiving stand (52) of the other cutting blade (9).
Is fixed, and the mating end of each of the receiving pedestals (51) and (52) of the left and right cutting blades (9) and (9) is fixed to the cutting frame (1).
2), securing the mounting strength of the middle cutting blade (60) and the pedestal (63) to the left and right cutting blades (9) and (9).
Interference can be easily prevented, the deformation of the middle cutting blade (60) and the pedestal (63) can be prevented, and the sliding resistance can be easily reduced.

In addition, a large gap is provided between the joining ends of the left and right cutting blades (9) and (9), which is larger than the width of one blade.
Mud or straw debris can be smoothly dropped from between the left and right cutting blades (9) and (9) to prevent a poor harvesting operation.

A crank yoke (77) is connected to a cutting blade crank (74) for driving the cutting blade (9) via a self-aligning bearing (76). It is possible to easily prevent vertical displacement after mounting, and easily prevent deformation and damage of the cutting blade crank (74) mechanism due to generation of a vertical driving component.

[Brief description of the drawings]

FIG. 1 is an overall side view of a combine.

FIG. 2 is an overall plan view of the combine.

FIG. 3 is an explanatory side view of a cutting unit.

FIG. 4 is an explanatory plan view of a reaper.

FIG. 5 is a drive system diagram of a mowing unit.

FIG. 6 is an explanatory plan view of the cutting blade.

FIG. 7 is an explanatory cross-sectional view of the back surface.

FIG. 8 is a side view of a cutting blade crank portion.

FIG. 9 is a drive system diagram of a 5-row cutting unit.

[Explanation of symbols]

 (9) Cutting blade (12) Cutting frame (51) (52) Receiving stand (60) Medium cutting blade (63) Middle receiving stand (74) Cutting blade crank (76) Self-aligning bearing (77) Crank yoke

Claims (3)

[Claims] 1. A combine harvester in which left and right cutting blades are slidably reciprocated on substantially the same straight line, wherein a middle cutting blade is disposed above a mating end of the left and right cutting blades, and a middle cutting blade is provided on one of the right and left cutting blades. A combine blade wherein the cutting blade is fixed, the middle cutting blade cradle is fixed to the other cutting blade cradle, and the mating ends of the left and right cutting blade cradles are fixed to the cutting frame. . 2. The apparatus according to claim 1, wherein a gap larger than one blade width is provided between the joining ends of the left and right cutting blades.
Combine described in. 3. The combine according to claim 1, wherein the crank yoke is connected to the cutting blade crank for driving the cutting blade via an automatic centering bearing.