JPH07155044A - Reaping apparatus of ordinary type combine harvester - Google Patents

Abstract

PURPOSE:To provide a reaping blade apparatus of an ordinary type combine harvester, capable of stably keeping the height of cut, stub, excellent in reaping performance and useful for threshing treatment of rice, wheat, soybeans, etc., by arranging a reaping blade for adjusting the height of cut stub behind a reaping blade for reaping grain culms. CONSTITUTION:The second reaping blade 22 for adjusting the height of cut stub is arranged behind the first reaping blade for reaping grain culms and the second reaping blade 22 is vertically movably connected through supporting frames 32 and 33 to the reaping rear part using a driving shaft for the second reaping blade as a supporting point and, simultaneously, the second reap blade 22-connecting side is formed in a state bent in the rear and a space region is ensured above the second reaping blade 22 to constitute the objective reaping blade apparatus of ordinary type combine harvester. Furthermore, the upper face side of a part for constituting the second reaping blade 22 is formed in backward inclined posture when viewed from the side.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a normal combine harvester blade for cutting grains such as rice, wheat and soybeans for threshing.

[0002]

2. Description of the Related Art A two-step cutting type of a first cutting blade for cutting grain culm and a second cutting blade for adjusting stump height, in which both the first and second cutting blades have a structure provided in a cutting portion Then, the mounting position of the second cutting blade is usually fixed at a fixed position.

[0003]

Therefore, when the height position of the first cutting blade is changed by controlling the raising and lowering of the cutting unit,
At the same time, the height position of the second cutting blade also changes, and even if an attempt is made to maintain an appropriate stump height, there is a problem that this retention becomes difficult.

[0004]

SUMMARY OF THE INVENTION Therefore, according to the present invention, in the ordinary combine combine in which the second cutting blade for adjusting the stump height is provided behind the first cutting blade for cutting grain, the drive shaft for the second cutting blade is provided. As a fulcrum, the second cutting blade is connected to the rear part of the mowing via a support frame so as to be vertically movable, and the second part of the support rame
By forming the cutting blade connecting side in a rearward bent shape and securing a space area above the second cutting blade, the second cutting blade is provided separately from the first cutting blade.
The height position of the cutting blade can be adjusted to maintain an appropriate stump height stably, and at the same time prevent the inconvenience such as straw being clogged in the gap between the second cutting blade and the support frame. It is possible to promote good cutting with the second cutting blade.

Further, by disposing the upper surface side of the second cutting blade constituent portion in a downwardly inclined rearward in a side view, it is inconvenient that straw or the like cut by the second cutting blade accumulates on the upper surface of the second cutting blade constituent portion. It is possible to prevent this, and to promote the discharge to the rear so that the performance of the second cutting blade can be stably maintained.

Further, in a normal combine combine in which a second cutting blade for adjusting the stump height is provided behind the first cutting blade for cutting grain, the second cutting blade drive shaft is used as a fulcrum to support the rear cutting frame via a support frame. By connecting and supporting the second cutting blade in a vertically movable manner, providing a grounding type sled body on the second cutting blade, and controlling the vertical position of the second cutting blade by detecting the grounding state of the sled body, Always secure a minimum height of the second cutting blade above a certain level, without any inconvenience such as damage to the second cutting blade,
The durability can be improved.

[0007]

Embodiments of the present invention will be described below in detail with reference to the drawings. 1 is a perspective explanatory view of the reaper, FIG. 2 is a side view of the whole,
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 a threshing unit equipped with an axial flow screw type handling cylinder (5), a processing cylinder (6), a sorting mechanism (7), etc., and is mounted on the machine stand (1), and (8) is a fried grain A grain tank for accumulating the grains of the threshing section (4) taken out through the tube (9), (1
0) is a hydraulic cylinder (1) in front of the lower part of the threshing section (4).
(1) A mowing section that is installed so as to be able to move up and down, (12) a driving cabin that includes a driver's seat (13) and a driving operation section (14), and is arranged in front of the grain tank (8).
Reference numeral 5) is an engine part provided behind the grain tank (8) and internally equipped with an engine (16), and (17) is a grain carry-out auger for taking out grains from the grain tank (8).

The mowing section (10) is connected to the grain mowing header (18) for receiving the uncut grain culm and the rear center of the header (18) so as to connect the mowing grain culm to the threshing section (4). It is composed of a feeder house (19) for feeding, and a reel (20) for scraping uncut grain, a first and second reciprocating drive type cutting blades (21) (22), and a grain scraping auger ( 23) is provided in the mowing header (18), and the mowing culm to be taken into the header (18) is internally provided in the feeder house (19).
It is configured to be sent to the threshing unit (4) via 4) and threshing processing.

A second reducing cylinder (25) is provided on the outer right side of the threshing section (4), and the second processed product is returned to the threshing section (4) through the processing cylinder (6) and re-threshed. And it is provided to re-sort.

As shown in FIGS. 4 to 6, the first cutting blade (21) has a cutting frame (2) of a cutting header (18).
6) Mowing the grain culms in preparation for the front end, and the second cutting blade (22) is the first for preparing the low position behind the first cutting blade (21).
The height of the stumps cut by the cutting blade (21) is adjusted, and the brackets (28) and (29) are provided on the left and right ends of the horizontal pipe (27) substantially below the middle of the cutting frame (26). The left and right second cutting blade rotation fulcrum shafts (30) (31) are attached, and the second cutting blade (22) is vertically moved to the fulcrum shafts (30) (31) via the left and right support frames (32) (33). It is movably supported.

As shown in FIG. 7, the support frame (32) on the left side is a receiving plate that extends and is fixed to the rear of the receiving blade (22b) of the second cutting blade (22) having an L-shaped section. (35)
The rear end of the frame (32) is connected to the rear end of the frame (32) via the vertical pipe (36) so that the left supporting frame (32) supports the second cutting blade (22) by a dimension (A) from the cutting blade (22). A space area (37) is formed above the cutting blade (22) so that no stagnant or clogged straw is generated in the rear side of the cutting blade (22) so as to avoid bending above the dimension (B).

The right side support frame (33) has a rear end of the frame (33) connected to a mounting plate (39) of a cutting blade drive case (38) fixedly mounted on the blade receiving stand (34). The second cutting blade drive shaft (4) having the same axis as the rotation fulcrum shaft (31)
0) is connected to the input shaft (38a) of the drive case (38) via the pulleys (41) (42) and the belt (43), and the driving force from the conveyor drive shaft of the feeder house (19) is applied. Pulleys (46) (47) are attached to the reaping input counter shaft (45) for inputting through the chain (44).
The drive shaft (40) is interlocked with each other via the belt (48) and the output shaft (38) of the drive case (38).
The output from b) is output to the second via the cutting blade crank mechanism (49).
The drive is performed by transmitting it to the movable blade (22a) of the cutting blade (22).

Furthermore, the left and right support frames (32) (3
3) is an upper horizontal frame (5) on the rear end side of the reaper (10).
0) through which the middle part can be moved up and down via the left and right hydraulic lifting cylinders (51) (52). The pivot (5) is attached to each bracket (53) fixed to the horizontal frame (50).
4) through which the base ends of the cylinders (51) (52) are swingably supported, and the tips of the piston rods (51a) (52a) of the cylinders (51) (52) are supported by the support frame (3).
2) It is connected to the fixed bracket (55) of (33) via the shaft (56), and the height position of the second cutting blade (22) is appropriately adjusted by operating the cylinders (51) and (52). Is configured.

As shown in FIG. 6, the left and right support frames (3
2) The second cutting blade (22) is supported by (33) by moving the left supporting frame (32) to the right inside by the dimension (L1) from the left end of the second cutting blade (22). The right support frame (33) is arranged on the left inner side by the dimension (L2) from the right end of the, and the rear surface of the blade holder (34) between these left and right support frames (32) and (33) is reinforced by bolts (57). Board (5
8) is attached, and the size (L2) on the right support frame (33) side that supports the drive case (38) is smaller than the size (L1) on the left support frame (32) side (L1> L2), The supporting load of these support frames (32) (33) is made substantially equal to the left and right to enable stable and good support, and a reinforcing plate (58) provided between these support frames (32) (33) Long cutting blade between spans (2
It is configured so as to allow the support of 2) without bending.

As shown in FIG. 8, the second cutting blade (2
Movable blades (22a) and receiving blades (22b) that are components of 2)
-A line (L) connecting the upper surfaces of the receiving table (34) and the reinforcing plate (58) is provided at a gentle downward slope (θ) backward with respect to the horizontal plane in side view, and the cutting blade (22) cuts the line. It is configured to promote the swift rearward discharge of the captured straw without accumulation.

Further, a wiping holder (59) is fixedly provided on the upper surface of the movable blade (22a) on the front side of the vertical pipe (36) position, and the holder (59) is projected upward through a bolt (60). Fixing the wiping plate (61), the movable blade (22
By moving the wiping plate (61) to the left and right integrally with a), it is configured to forcibly remove the straw or the like staying in the space region (37) in front of the vertical pipe (36).

Further, the support shaft (6) is attached to the receiving blade base (34) between the guard plate (62) at the left end of the second cutting blade (22) and the receiving plate (35).
3) via a ground sled body (64) so as to be swingable, and a potentiometer (65) for detecting a ground slanting state of the sled body (64) is provided on the support shaft (63). ) Is detected by the potentiometer (65), the second cutting blade (22) is controlled to move upward through the cylinders (51) (52) to keep the minimum height of the cutting blade (22) constant. It is configured to ensure the above.

The first cutting blade (21) and the second cutting blade (2)
In 2), the driving directions are opposite to each other, and the reciprocating inertial forces are made to cancel each other, thereby suppressing the occurrence of vibration to a minimum.

This embodiment is constructed as described above, and the first cutting blade (21) and the second cutting blade (22) are provided on the cutting unit (10) side, and these cutting blades (21) ( 22) enables the integrated lifting and lowering of the cylinder (51).
By allowing the second cutting blade (22) alone to move up and down by (52), the proper stump height can be stably maintained.

Further, the second cutting blade (22) is provided with a cutting unit (10).
The cutting blade connecting side of the left support frame (32) which is supported on the rear side is formed in a bent back shape through the receiving plate (35) and the vertical pipe (36), and a space area is provided above the second cutting blade (22). By forming (37), it is possible to prevent straw clogging at this part, and even if straw clogging occurs, the left and right forced exclusion by the wiping plate (61) can surely prevent straw clogging. You can do it.

Further, the constituent portion (22) of the second cutting blade (22)
a) Upper surface side line (L) of (22b) (34) (58)
By tilting backward in a side view (θ),
The second cutting blade (22) facilitates the backward discharge without the accumulation of straw or the like on the second cutting blade (22), so that the cutting performance of the second cutting blade (22) is stably maintained and the sled body ( 64) also ensures the minimum height position of the second cutting blade (22), maintains an appropriate stump height, and the second cutting blade (22).
The safety protection of

[0022]

As is apparent from the above embodiments, the present invention is a normal combine harvester in which a second cutting blade (22) for adjusting the stump height is provided behind the first cutting blade (21) for grain cutting. In the second cutting blade (2), the second cutting blade drive shaft (40) is used as a fulcrum, and the second cutting blade (2) is attached to the rear part of the cutting through the support frames (32) (33).
2) is vertically movably connected and supported, and the second cutting blade (22) connection side of the support frame (32) is formed in a rear bent shape so that a space area (37) is formed above the second cutting blade (22). To secure the second cutting blade separately from the first cutting blade (21).
The height position of the cutting blade (22) can be adjusted to maintain an appropriate stump height in a stable manner, and the straw is provided in the gap between the second cutting blade (22) and the support frame (32). It is possible to prevent inconveniences such as clogging, and promote good cutting with the second cutting blade (22).

Further, the second cutting blade constituent parts (22a) (22)
b) Since the upper surface sides of (34) and (58) are provided in a downward inclination (θ) in a side view rearward, straw cut by the second cutting blade (22) and the like are cut into the second cutting blade constituting section (22a). ) (22b)
It is possible to prevent inconveniences such as staying on the upper surfaces of (34) and (58), promote discharge to the rear, and maintain stable performance of the second cutting blade (22).

Further, in the normal combine combine in which the second cutting blade (22) for adjusting the stump height is arranged behind the first cutting blade (21) for cutting grain and culm, the drive shaft (40) for the second cutting blade is provided. As a fulcrum, the second cutting blade (22) is movably connected to the rear part of the cutting through support frames (32) and (33), and the grounding sled body (64) is provided on the second cutting blade (22). The vertical position of the second cutting blade (22) is controlled by detecting the grounding state of the sled body (64).
The minimum height of the cutting blade (22) is always secured above a certain level, and good cutting work can be performed without shortening the stump height above a certain level, and the second cutting blade (22) is damaged. There is a remarkable effect that the durability can be improved without any inconvenience.

[Brief description of drawings]

FIG. 1 is a perspective explanatory view of a reaping unit.

FIG. 2 is an overall side view of a normal combine.

FIG. 3 is an overall plan view of a normal combine.

FIG. 4 is a side view illustrating a second cutting blade section.

FIG. 5 is a side view of a second cutting blade section.

FIG. 6 is a plan view of a second cutting blade section.

FIG. 7 is an enlarged side view of a second cutting blade section.

FIG. 8 is an enlarged side view of a second cutting blade section.

[Explanation of symbols]

 (21) First cutting blade (22) Second cutting blade (22a) Movable blade (22b) Receiving blade (34) Receiving blade base (37) Space area (40) Drive shaft (58) Reinforcing plate (64) Sled body (Θ) inclination

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Tomohiko Ichikawa 1-40, Nisshin-cho, Omiya-shi, Saitama 2 Within the Institute for the Promotion of Specific Industrial Technology of Biological Systems (72) Takao Sugiyama Nissin, Omiya-shi, Saitama 1-cho, 1-cho 2 Biological specific industrial technology research promotion mechanism

Claims (3)

[Claims] 1. A normal combine combine in which a second cutting blade for adjusting the stump height is arranged behind the first cutting blade for cutting grain culm,
The second cutting blade drive shaft is used as a fulcrum, and the second cutting blade is movably connected and supported at the rear part of the cutting through a support frame.
A cutting blade device for a normal combine harvester, characterized in that the second cutting blade connecting side of the support frame is formed in a rearward bent shape so as to secure a space area above the second cutting blade. 2. The cutting blade device for a normal combine harvester according to claim 1, wherein the upper surface side of the second cutting blade constituting portion is provided so as to be downwardly inclined rearward in a side view. 3. A normal combine harvester in which a second cutting blade for adjusting the stump height is arranged behind the first cutting blade for cutting grain culm,
The second cutting blade drive shaft is used as a fulcrum, and the second cutting blade is movably connected and supported at the rear part of the cutting through a support frame.
An ordinary combine harvester blade characterized in that a grounding type sled body is provided on the second cutting blade and the vertical position of the second cutting blade is controlled by detecting the grounding state of the sled body.