JP3252238B2 - Combine harvester - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a combine harvester for preventing dust generated in a mowing section from affecting a worker in a driver's seat.

[0002]

Conventionally, Japanese Utility Model Application Laid-Open No. 59-3
No. 8740, or Japanese Utility Model Laid-Open No. 2-90940,
Alternatively, as shown in Japanese Utility Model Application Laid-Open No. 2-142117, reaping is performed.
There is a technology to cover the upper surface with a dust-proof dust cover.
Cover was formed in a single shape, so the dust cover
Is too large to open and close easily.
When the dust cover is formed small,
It is necessary to make the dust cover of the raising part large.
There is a problem with the cover structure. Therefore, before and after dust dust
By dividing into bars, you can handle
Can easily open and close the rear dust cover.
Questions such as simplification of the bar mounting structure cannot be achieved easily
There is a title .

[0003]

SUMMARY OF THE INVENTION The present invention provides a combine harvester in which a dust protection front and rear dust cover is provided in front of a threshing unit to cover the upper part of a cutting unit.
The front dust cutter is attached to the mowing part, which is rotatably supported via the point shaft.
The receiving frame for fixing the bar and supporting the bar
Move the rear dust cover back and forth through the parallel link
Freely provided, the cutting section around the connecting shaft on the rear side of the parallel link
The rear dust cover is attached rotatably in conjunction with the lifting
The front dust cover using the raising structure of the mowing part
After the dust cover is opened and closed, the dust cover
Can be easily supported by the cantilever structure, and the front dust cover
Separate support mechanism and rear dust cover support mechanism
Easily simplify each cover and its mounting structure
Rear dust cover that can be opened and closed
The cutter is rotated by the raising and lowering action of the reaper,
The rear dust cover to the front dust while preventing interference with the front cover.
It can be supported by being superimposed on the cover, preventing dust from scattering at the mowing part.
And can easily improve the workability.
You .

[0004]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below in detail with reference to the drawings. 1 is an explanatory side view of a dust cover portion, FIG. 2 is a side view of the entire combine, and FIG. 3 is a plan view of the same, where (1) is a track frame on which a traveling crawler (2) is mounted, and (3) Is a machine frame which is a body frame installed on the truck frame (1), and (4) is a threshing machine in which a feed chain (5) is stretched to the left and a handling cylinder (6) and a processing cylinder (7) are built in. , (8) is a cutting section provided with a cutting blade (9) and a grain culm transport mechanism (10), (11) is a straw processing section facing the end of a straw chain (12), and (13) is a driver's seat (14) and a cab provided with a driving operation unit (15);
6) is an engine disposed substantially below the driver's seat (14), and (17) is a kernel (1) for transferring the grains from the threshing unit (4).
8) A grain tank fed through the grain tank, and 19 is a grain discharge conveyor for taking out grains in the grain tank (17) to the outside, and configured to continuously perform cutting and threshing operations. .

As shown in FIGS. 4 to 6, threshing unit (4)
In front of the hood, there are provided dust protection front and rear dust covers (20) and (21) for covering the front half and the rear half of the upper part of the reaper (8), and the dust covers (20) and (21) are on the right side in rear view. (20a) Left side from (21a) (20b) (21b)
(3) formed in a gate shape with a small vertical width
A cutting main frame (24) supported by a receiving stand (22) erected and fixed at the front end via a fulcrum shaft (23) so as to be vertically rotatable.
And the tip guide plate (2) of the raising connection pipe (27) stretched between the raising drive case (26) of the raising case (25).
8), the lower end of the right side surface (20a) of the front dust cover (20) is fixed, the front end of the cover (20) faces the upper end of the raising case (25), and the guide plate (2) is fixed.
A rear end of the cover (20) is provided around a horizontal horizontal portion at the upper end of the horizontal connecting pipe (30) viewed from the rear and extending between the bracket (8) and the bracket (29) on the left side of the cutting frame.

The rear dust cover (21) is formed to have a larger left and right width than the front dust cover (20), and the rear dust cover (21) is overlapped on the outside of the front dust cover (20). (22) Receiving plate (22a) and driver's seat (1)
4) The right end side of the rear dust cover (21) through a pair of front and rear parallel links (33) to a substantially L-shaped receiving pipe (32) that is supported between the left side column (31) and the left side. Are supported in a cantilever manner so as to be movable back and forth.

The lower ends of the parallel links (33) and (34) and the substantially horizontal portion (32a) of the upper end of the receiving pipe (32) are swingably connected via front and rear pivots (35) and (36). 33) (34) The upper end and the rear end side of the cover (21) are swingably connected via front and rear pivots (37) and (38), and a link (39) links the front and rear pivots (37) and (38).
The pivot shaft (38) is rotatably supported by a receiving member (40) fixed to the cover (21), and a swing plate (41) fixed to the front end of the link (39) is long. The receiving member (4) fixed to the cover (21) through the hole (42)
3) engagingly connecting the pivot pin (44), a tension spring (45) for opening the cover between the receiving pipe (32) and the rear link (34), and the front link (33) and the pivot pin. (4
4) A tension spring (46) for lowering the cover is stretched in between, and the rear dust cover (21) is moved back and forth by swinging the parallel links (33) and (34) back and forth to open and close. It is composed.

[0008] Further, as shown in FIG.
8) A torsion spring (49) is attached to a hook pin (48) fixed to the front of the threshing unit (4) via a bracket (47).
The pin (48) is engaged with the hook (50) when the cover (21) against the spring (45) is closed (rearwardly moved). It is configured to perform the closing lock of (21).

Further, the cover (20) is attached to the guide (2) at the lower end of the right side surface (20a) of the front dust cover (20).
8), a mounting bracket (51) for fixing from the outside is provided, and a locking pin (52) is protruded inward at the lower portion of the front end inside the right side surface (21a) of the rear dust cover (21). When the rear dust cover (21) is closed as shown in
When the front dust cover (20) also rises with the rise of the mowing part (8) about the fulcrum shaft (23), the right-end bent edge (51a) of the metal fitting (51) is connected to the pin (52). The pin (44) is moved along the long hole (42) about the rear pivot shaft (38), and the front end side of the rear dust cover (21) is lifted up. It is configured to prevent interference with the cover (20).

Further, a stopper pin (54) is provided on the right end vertical portion (30a) of the pipe (30) via a fixed mounting plate (53) so as to project rightward and leftward. When the front link (33) is brought into contact with the pin (54) at the time of opening (forward movement), the cover (21) is held at the open position.

Reference numeral (55) denotes an unlocking lever for releasing the rear dust cover (21).

As is clear from the above, the threshing unit (4)
Dust-proof front and rear dust covering the upper part of the mowing part (8) in front
Combine harvester with covers (20) and (21)
At the receiving base (22) through the fulcrum shaft (23)
The front dust cover (2)
0) is fixed and supported by the receiving table (22).
Parallel link (3) to the receiving pipe (32)
3) Rear dust cover (21) forward and backward through (34)
It is provided movably, and the rear side of the parallel link (33) (34)
The reaping unit (8) is raised around the pivot (38), which is a connecting shaft.
The rear dust cover (21) is rotatably mounted in conjunction with the lowering
I can. And, using the raising structure of the mowing part (8),
After fixing the dust cover (20) and opening and closing it,
Cover (21) cantilevered parallel link (33) (34)
Supported by the structure, supporting the front dust cover (20)
The mechanism and the support mechanism for the rear dust cover (21) are configured separately.
Of each cover (20) (21) and the mounting structure
After opening and closing by opening and closing
The dust cover (21) is moved up and down by the mowing unit (8).
To prevent interference with the front dust cover (20).
Back dust cover (21) to front dust cover (20)
Stacked and supported to prevent the scattering of dust from the mowing part (8)
And improve the workability.

This embodiment is configured as described above, and when the rear dust cover (21) is in the closed state due to the rearward movement, the upper area of the threshing unit (4) and the cutting unit (8) in front of the threshing unit (4). 20) The dust generated by the mowing part (8) during the mowing operation is covered by the (21), and the dust is generated by the driver's seat (14).
Inconveniences such as scattering to other workers are prevented.

Further, when it is desired to manually feed the culm into the handle (4a) of the threshing unit (4) from the position of the driver's seat (14), or at the entrance of the threshing unit (4) or the cutting unit (8) near this entrance. ), If you want to perform maintenance and inspection of the rear dust cover (2)
By moving 1) forward to open, each of these operations can be performed easily and safely.

[0015]

Obviously the present invention from the above examples according to the present invention is co provide a threshing section (4) forward the reaper (8) front and rear dust cover dustproof covering above (20) (21)
In the harvester of Minevine, a fulcrum shaft is attached to the cradle (22).
To the mowing part (8) which is rotatably supported via (23)
Fix the front dust cover (20), and
Parallel links to support frames for supporting (32) to (2 2)
(33) Via the rear dust cover (21) via (34)
Provided movably behind, after the parallel links (33), (34)
Around the connecting shaft (38) on the side and linked with the raising and lowering of the mowing part (8)
With the rear dust cover (21) rotatably mounted
The front dust cover uses the raising structure of the mowing part (8).
ー (20) can be fixed and the dust cover (2
1) is formed by the cantilever structure of the parallel links (33) and (34).
Support mechanism for the front dust cover (20)
And the support mechanism for the rear dust cover (21)
Simplification of each cover (20) (21) and its mounting structure
Can be easily performed, and
The dust cover (21) that can be opened and closed
The front dust cover (2
0) while preventing the rear dust cover (21) from
It can be supported by overlapping the strike cover (20), and the mowing part (8)
Prevents scattering of dust and improves workability
It can be aimed at .

[Brief description of the drawings]

FIG. 1 is an explanatory side view of a dust cover portion.

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

FIG. 3 is an overall plan view of the combine.

FIG. 4 is an explanatory diagram of a dust cover in a use state.

FIG. 5 is an explanatory front view of a dust cover.

FIG. 6 is an explanatory view showing a lifted state of the dust cover.

FIG. 7 is a partial explanatory view of a dust cover.

[Explanation of symbols]

(4) Threshing unit (8) Cutting unit (20) Front dust cover (21) Rear dust cover (22) Cradle (23) Support shaft (32) Receiving pipe (receiving frame) (33) (34) Parallel link ( 38) Back axis (connection axis)

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) A01D 67/00

Claims (1)

(57) [Claims] 1. A dust protection front and rear dust cover (20) (21) for covering an upper part of a mowing part (8) in front of a threshing part (4).
In a combine harvester provided with a pedestal (22)
Reaper that is rotatably supported via a fulcrum shaft (23)
While fixing the front dust cover (20) to (8),
Flat on the receiving frame (32) supported by the receiving table (22).
Rear dust cover (2) via the row link (33) (34)
1) is provided movably back and forth, and the parallel links (33) (3)
4) Raise the mowing part (8) around the rear connecting shaft (38).
The rear dust cover (21) is rotatably mounted in conjunction with the lowering
Combine cutting device, characterized in that digit.