JPS608670Y2 - combine - Google Patents

Description

[Detailed description of the invention] The present invention relates to a combine harvester with a culm cutting section installed at the rear of the main body. This invention relates to an improvement in the discharge culm switching function, which transfers the waste over the culm and collects it on the dropper.

The structure of a conventional combine harvester with a culm switching function is
As shown in the figure.

That is, the rear part of the culm cover A that covers the upper part of the combine is positioned directly above the rear wall a of the culm cutting part B, and the rear part of the culm cover A is placed between the rear end of the culm cover A and the rear wall a of the culm cutting part B. culm outlet C
The rear end of the conveyor chain D, which is housed inside the culm cover A, is located above the inlet opening opened at the center of the upper part of the culm cutting section B. Switching between the processing and the accumulation into the dropper F was performed by a folding door E pivotally attached to the rearmost end of the upper surface of the culm cutting section B.

In Fig. 3 A, the culm is transported beyond the upper part of the culm cutting part B without being cut, and is allowed to fall from the rearmost culm discharge port C onto the dropper F for accumulation. ,
The figure shows a state in which the culm inlet B2 is covered with a folding door E and the culm outlet C is opened.

In addition, in order to cut the waste culm and discharge it to the field, the opening in the figure is opened by folding the folding door E and standing it up.
2 is opened and the culm discharge port C is closed at the same time.

Conventional combine harvesters with such a structure had the following drawbacks.

That is, in the case of Fig. 3A, in order to smoothly guide the culm to the dropper F, it is necessary to make the upper part of the culm cutting part B steep. The arrangement and drive mechanism of the cutter blades Ba and B3' inevitably become complicated.

Furthermore, if the culms being transferred were to get caught on the edge of the folding door E, the folding door E would easily stand up, making it necessary to interrupt the culm accumulation process.

In the case of the opening in Figure 3, the steeper the slope of the upper part of the culm cutting part B, the narrower the actual opening degree of the culm introduction port B.
In some cases, the transferred culm gets stuck inside the culm cover A at the rear, causing the drive of the conveyor chain D to stop.

Further, the folding door E easily falls forward due to vibrations or shocks, and the culm introduction port B2 may become partially closed, which may impede the efficiency of the cutting process.

The present invention was devised in view of the above-mentioned drawbacks of the conventional technology and for the purpose of eliminating the drawbacks. A conveyance chain for conveying the culm is provided so as to protrude to the rear of the culm cutting section, and a culm discharge port is provided behind the culm cutting section of the culm cover that covers the upper part of the conveyance chain, and the culm cutting section A culm introduction port is provided in the upper part of the culm cutting part, and a base of a pivot member having a switching cover pivotally supported at the end thereof is pivoted to the lower part of the rear wall of the culm cutting part. The switching cover pivotally supported at the end of the culm is configured to be able to be reversed avoiding the conveying chain when selectively opening and closing the culm inlet and the culm outlet. .

Hereinafter, the present invention will be explained based on FIGS. 1 and 2 showing one embodiment thereof.

In the figure, 1 is a culm cutting section installed at the rear of the combine main body.

The culm cutting section 1 may be installed integrally at the rear of the combine main body, or may be installed as a separate and detachable unit.

The culm cutting part 1 has a box shape, and a scraping board 22 is installed inside.
A pair of disc blades 23 and 23 are attached, a culm inlet 1b is provided at the upper part, and an outlet 24 is provided at the lower part.

When the culm 9 is introduced from the culm introduction port 1b, the scraping board 22
rakes this in and shreds it with the disk blade 23.23.

The shredded culms 9 are discharged from an outlet 24 to the field.

A disk blade 2 is provided in the upper half of the rear wall 1a in the culm cutting part 1.
3. An inspection window 15 is opened for lubricating the bearings and other mechanical parts of 3.23, and for inspecting and repairing these machines.

A rotatable dropper 2 projecting rearward is provided at the lower part of the rear wall 1a, and the uncut culm 9 is deposited on the dropper 2.

In FIGS. 1 and 2, 11 is a culm cover.

The culm cover 11 is provided so as to cover the combine main body and the upper part of the culm cutting section 1, and further extends to protrude to the rear of the culm cutting section 1, and the rear end of the protruding portion is neatly shaped. It is shaped like an eave.

The rear end protrusion of the culm cover 11 is provided with a culm discharge port that is located directly above the dropper 2 and opens downward.

A culm conveyance mechanism is installed in the inner area covered by the culm cover 11.

The culm conveyance mechanism includes a foot chain 25 provided in the upper part of the combine main body from the front part to a position near the rear of the combine main body, and a foot chain 25 that extends from the rear part of the combine main body over the upper part of the culm cutting part 1. The conveyor chain 10 extends to the rear of the main body of the combine, the star-shaped rotary disk 20 and the rear end sprocket 10a1 foot chain 25 on which the front and rear ends of the conveyor chain 10 are respectively constructed, and the lower part of the conveyor chain 10. The lower guide rail and foot chain 25 extend to the position just before the culm introduction port 1b at the upper part and the upper part of the culm cutting section 1, and the upper guide rail 19 and the foot chain 25 extend over the entire upper part of the conveyor chain 10. It is composed of a guide plate 21 and the like provided between the rear end of the star-shaped rotary disk 20 and the star-shaped rotary disk 20.

The shed culms 9 that have been harvested and threshed from the field are transported backwards over the top of the combine main body by the transport mechanism,
When cutting this, it is introduced into the culm cutting section 1,
When this is to be accumulated, it is transferred onto the dropper 2.

The switching mechanism 7 switches between the cutting process and the accumulation process.

The switching mechanism 7 includes a pivot member 4 whose base is pivotally connected to brackets 3, 3 fixed to an intermediate portion of the rear wall 1a of the culm cutting section 1 in the vertical direction, and a pivot member 4 provided at the tip 4a of the pivot member 4. The switching cover 6 is pivotally supported by a hinge 5.

Both the pivot member 4 and the switching cover 6 are plate-shaped bodies.

Since the pivot member 4 also serves as a cover for opening and closing the inspection window 15 of the culm cutting section 1, it is rotatable in the vertical direction as shown by the white arrow A.

When the pivot member 4 is placed along the rear wall 1a of the culm cutting section 1 and the inspection window 15 is closed, the tip 4a of the pivot member 4 is located slightly above the upper end 8 of the rear wall 1a; is also an intermediate position between the culm inlet 1b and the culm outlet.

The switching cover 6 connects the pivot member 4 to the rear wall 1a of the culm cutting section 1.
, the culm introduction port 1b of the culm cutting part 1 and the culm discharge port at the rear end of the culm cover 11 are selected and alternately opened and closed, so it can be rotated forward and backward. (White arrow B
).

In FIG. 1, the switching cover 6 drawn with a solid line shows a state in which the culm discharge port is closed and the culm inlet port 1b is opened.

In this case, a recess 12 is provided on the rear edge 11a of the culm cover 11.
The tip edge 6a of the switching cover 6 is formed with a bulge to enable snap locking.

The switching cover 6 drawn with a three-dot chain line shows a state in which the exhaust culm introduction port 1b is closed.

In this case, a locking member 14 having a recess 14a is fixed to the front edge 13 of the culm introduction port 1b, so that the switching cover 6 can be locked with a snap.

When the switching cover 6 closes the culm introduction port 1b,
Needless to say, the culm discharge port is in an open state.

In FIGS. 1 and 2, 16 is an operating handle for vertically moving the pivot member 4, and 17 is an operating handle for rotating the switching cover 6 in reverse.

Next, the use of the present combine harvester constructed as in the above embodiment will be explained.

When cutting the culm, the switching mechanism 7 is moved so that the pivot member 4 is placed along the rear wall 1a of the culm cutting section 1, and the inspection window 15 is closed, as shown by the solid line in FIG. The leading edge 6a of the switching cover 6 is snapped into the recess 12 of the rear edge 11a of the culm cover 11.

As a result, all the conveyance mechanisms for conveying the exhaust culm 9 rearward, such as the conveyance chain 10, are completely shielded from the outside.

The culm 9 is thus transferred by the conveyor chain 10 over the lower guide rail 18 to the culm introduction port 1b of the culm cutting section 1, and is dropped from the culm introduction port 1b downward into the culm cutting section 1. , while the disk blade 2 is being scraped by the scraping board 22.
3.23, it is cut into small pieces and discharged from the discharge port 24 to the field.

In this case, if the concave portion 12 of the rear end edge 11a of the culm cover 11 is formed to be elastic, the culm 9 can be introduced and dropped from the culm introduction port 1b of the culm cutting part. figure,
Even if they may gather on the switching cover 6 that closes the exhaust culm discharge port, the pressure of the exhaust culm 9 in this case causes the recess 12 to elastically deform outward, and the tip edge 6a of the switching cover 6 and When the snap lock is released, the switching cover 6 is rotated downward, and the culm 9, which has been concentrated, is released onto the dropper 2.

Therefore, accidents such as a large amount of waste culms 9 gathering at the rear of the waste culm cover 11 and the conveyance chain 10 stopping will not occur.

If the culm 9 is to be collected in the dropper 2 without being cut, the switching cover 6 is placed in the state shown by the three-dot chain line in FIG.

At present, the switching cover 6 is placed in the state indicated by the solid line to cut the culm 9, and in order to reverse this to the stacking state, first the tip edge 6a of the switching cover 6 is placed in the state indicated by the solid line to cut the culm 9. After disengaging the rear end edge 11a from the recess 12 at 11 and rotating the switching cover 6 and the pivot member 4 rearward, only the switching cover 6 is rotated forward, and once as shown in FIG. Leave it in the state shown by the two-dot chain line.

Next, the pivot member 4 is rotated forward, the switching cover 6 is placed over the culm cutting part 1 so as not to interfere with the conveyance chain 10, the culm introduction port 1d is closed, and the tip edge 6a is engaged. It is snapped into the recess 14a of the stop member 14.

When the exhaust culm transport mechanism is driven in this manner, the exhaust culm 9 transferred by the foot chain 25 is moved upward by the star-shaped rotary disk 20 and the guide plate 21, and the upper guide rail 19 and the transport chain 10 It is transported backward by the transport chain, falls downward from the rear end lea of the conveyor chain, passes through the culm discharge port, and is accumulated on the dropper 2 directly below.

The culms 9 accumulated on the dropper 2 are discharged into the field in appropriate amounts.

In addition, the culm 9 is moved on the lower guide rail 18,
It may be allowed to pass over the switching cover 6 that covers the upper part of the culm cutting section 1, and fall and accumulate on the dropper 2 from below the rear end 10a of the conveyance chain 10.

As mentioned above, in the present combine harvester, the upper part of the culm cutting part installed at the rear of the main body can be made into a horizontal plane that continues to the upper part of the combine main body, so that the cutting mechanism installed inside the culm cutting part can be It can be made simple, and the culm can be smoothly introduced into the culm introduction port.

In particular, the structure of the switching mechanism between cutting processing and stacking processing is extremely simple, so it not only has few failures even after many years of use, but also allows the switching cover to be held stably in both cutting processing and stacking processing. Therefore, there are many advantages such as not interfering with the efficiency of the cutting process or interrupting the stacking process.

[Brief explanation of the drawing]

Figures 1 and 2 both illustrate an embodiment of the proposed combine, in which Figure 1 is a longitudinal sectional view of the rear part of the proposed combine, Figure 2 is a perspective view of the rear part of the proposed combine, and Figure 3 is a perspective view of the rear part of the proposed combine. Figures 9 and 9 are vertical cross-sectional views of the rear part of a conventional combine harvester, with Figure 9 showing the culm accumulation process and Figure 9 showing the cutting process. DESCRIPTION OF SYMBOLS 1... Exhaust culm cutting part, 1b... Exhaust culm introduction port, 2... Dropper, 4... Pivoting member, 6...・Switching -ht<-17...Switching mechanism, 9...Exhaust culm, 10...Transportation chain, 11...Exhaust culm cover, 11a... ...
- Posterior edge.

Claims (1)

[Scope of utility model registration request] In a combine harvester with a culm cutting section installed at the rear, a conveyor chain for conveying threshed culms is provided to protrude to the rear of the culm cutting section, and a culm cover covers the upper part of the conveyor chain. A culm discharge port is provided behind the cutting section, a culm introduction port is provided at the top of the culm cutting section, and a switching cover is provided at the end of the bottom of the rear wall of the culm cutting section. The base of the pivotally supported pivoting member is pivotally connected, and the switching cover pivotally supported on the end of the pivoting member is configured to rotate when the exhaust culm inlet and the exhaust culm outlet are selected and alternately opened and closed. A combine harvester that can be reversed avoiding the conveyance chain.