JP2574064B2 - Combine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a mowing unit capable of raising and lowering a culm,
A transport device for transporting the harvested grain culm, a threshing device for threshing the transported grain culm, and a handling depth adjusting means for adjusting the handling depth in the threshing device; Instructing means for instructing a mowing operation for mowing a stalk while performing, and controlling means for operating the handling depth adjusting means to a deep handling side in accordance with an indication that the mowing operation is instructed by the instructing means. And the combine provided.

[Conventional technology]

In this type of combine, when the mowing operation is performed while traveling toward the ridge in a field with a surrounding ridge, the front end of the reaping portion collides with the ridge a little before the end of one mowing work process. In order to prevent this, it is necessary to cut and mow the cereal stalk while raising the cutting section.

However, when such a harvesting operation is performed, the culm length of the harvested grain culm that is mowed and conveyed to the threshing device becomes shorter than the culm length in a normal cutting state. When the mowing operation is instructed, the handling depth adjusting means is operated to the deep handling side to reduce the possibility of unhandled operation in the threshing operation by the threshing device.

By the way, in this type of combine, conventionally, the weeding tool serving as the front end of the mowing part has always been fixed in the operating posture protruding forward in the body.

[Problems to be solved by the invention]

In the above prior art, the weeding tool has a large amount of protrusion toward the front of the fuselage, so when the ridge approaches, the mowing operation is started early to prevent the weeding tool from colliding with the ridge. There is a need to.

Therefore, the cutting length of the cereal stem located near the ridge becomes extremely short, which may hinder threshing work.
In addition, the amount of uncut culm near the furrow increases, and it takes time and effort to cut the culm at the work site.

Therefore, an object of the present invention is to provide a combine having high workability by solving the above-mentioned conventional drawbacks by a reasonable configuration without lowering the operability.

[Means for solving the problem]

In order to achieve this object, the characteristic configuration of the combine according to the present invention includes a cutting unit that can freely move up and down to cut the culm,
A transport device for transporting the harvested grain culm, a threshing device for threshing the transported grain culm, and a handling depth adjusting means for adjusting the handling depth in the threshing device; Instructing means for instructing a mowing operation for mowing a stalk while performing, and controlling means for operating the handling depth adjusting means to a deep handling side in accordance with an indication that the mowing operation is instructed by the instructing means. In the combine provided with, the weeding tool provided in the cutting unit, with respect to the cutting unit,
Attitude switching means is provided for switching between a working attitude protruding forward on the fuselage and a retracted attitude retracting rearward on the fuselage, and the control means is instructed by the instructing means to perform the mowing operation. When the weeding implement is in the retracted position, and when it is not instructed that the mowing operation is performed, the posture switching means is operated so that the weeding implement is in the working posture. The operation and effect are as follows.

[Action]

During normal mowing work, that is, when the mowing part is positioned below and the mowing operation is running, the weeding tool provided on the front side of the machine should be switched to the working posture projecting forward on the machine body. Thus, the original function as a weeding tool can be exhibited.

When the mowing operation is instructed by the instructing means when approaching the ridge in one mowing work process, the handling depth adjusting means is operated to the deep handling side, and the weeding device is moved to the body. The attitude switching means is operated so as to switch from the acting attitude protruding forward to the retracted attitude retreating rearward of the fuselage.

In other words, in the mowing operation, the amount of protrusion of the weeding tool toward the front side of the fuselage becomes small, so that collision with the ridge can be avoided even if the start of the mowing operation is made relatively late.

〔The invention's effect〕

Therefore, while minimizing the collision of the weeding tools with the ridges, the cutting length of the grain stalks near the ridges is suppressed from becoming extremely short,
It is possible to avoid hindrance to the threshing operation, and to reduce the amount of cereal culm in the uncut area near the ridges, thereby reducing the labor for manual cutting.

In addition, since the operation of the handling depth adjusting means toward the deep handling side and the switching operation of the weeding implement attitude switching means are executed together in response to a command from one commanding means, Compared to a configuration in which dedicated instruction means for instructing switching is provided, the configuration can be simplified accordingly, and
There is no disadvantage that the operation becomes troublesome.

〔Example〕

 Hereinafter, embodiments of the present invention will be described with reference to the drawings.

As shown in FIG. 4, a cutting unit (B) is vertically attached to the front of the machine (A) including a pair of left and right crawler traveling devices (1), a threshing device (2), and a control unit (3). It is swingably mounted to form a combine.

The cutting unit (B) includes a weeding device (9) for weeding the planted grain culm, a raising device (4) for causing the weeded grain culm, and a cutting device for cutting the origin of the caused grain culm. A blade device (5), an auxiliary transport device (6) for collecting and transporting the harvested grain culm rearward, and a feed chain (2) of the threshing device (2) while gradually transporting the transported harvested grain culm sideways. It is configured to include a transfer device (8) to be transferred to 7). The mowing part (B) is entirely provided with a hydraulic cylinder so as to be vertically movable about a rear horizontal axis (P) so that the mowing height of the grain stalk can be changed.

The weeding implement (9) has an action posture projecting forward of the fuselage,
It is provided to be switchable between a retracted posture and a retracted posture to the rear of the machine.

In addition, as shown in FIG. 1, a long hole (a) is formed in the plate-like mounting frame (20A) at the tip of the weed supporting frame (20).
Is formed, and the holding body (9a) of the weeding implement (9) is slidably engaged in the longitudinal direction of the long hole (a). In addition, the weeding implement (9) and the electric motor (M ₁ ) as the attitude switching means are linked and connected via a release wire (21).
Further, a spring (22) for urging the weeding implement (9) to return to the working posture is provided. That is, the electric motor (M ₁ )
Can be switched between the acting posture and the retracted posture by driving the. In FIG. 1, (S ₃ ) and (S ₄ ) are limit switches that are turned ON when the weeding implement (9) is in the operating posture or the retracted posture.

As shown in FIG. 1, the transporting device (8) includes a pinching transporting device (8A) that pinches and transports the root side of the harvested grain culm, and a tip-locking transport that locks and transports the tip side of the harvested grain culm. Equipment (8B)
And the tip guide plate (8C), which transports the harvested grain culm from the auxiliary transport device (6) toward the rear of the machine in a vertical posture, and changes the posture to a horizontal position at a transport end to feed threshing. Functions to deliver to the chain (7).

In addition, the vertical transport device (8) is pivotally attached to the end portion so as to be vertically swingable around the horizontal axis (P). When it is vertically swung, the support position of the harvested grain culm supplied from the auxiliary transport device (6) is changed in the direction of the culm body, and is further transferred from the vertical transport device (8) to the threshing feed chain (7). The position of the harvested grain culm is changed in the culm direction, and the handling depth in the threshing device (2) is changed and adjusted.

The swing operation structure of the vertical transport device (8) will be described. As shown in FIG. 1, an electric motor (M ₂ ) is provided, and the depth of operation can swing around the horizontal axis (Q). A rack (11) is attached to the adjusting lever (10), and a pinion (12) engaging with the rack (11) is attached to the electric motor (M ₂ ). Further, an inverted U-shaped member (13) also serving as a frame of the vertical transport device (8) and an arm (14) are operatively connected via a push-pull rod (15), and an electric motor (M ₂ )
The vertical transport device (8) is configured to swing up and down by performing the forward / reverse rotation operation of. That is, the vertical transport device (8), arm (14), rack (11), pinion (1
2) The handling depth adjusting means (C) is constituted by the electric motor (M ₂ ) and the like.

As shown in FIG. 2, a pair of upper and lower tip sensors (S ₁ ) and (S ₂ ) for detecting the tip position is transferred to the inverted U-shaped member (13) by the vertical transfer device (8). It is attached so as to be in contact with the culm. Head sensor (S ₁ )
Each of (S ₂ ) includes a sensor lever (16) that retreats to the lower side of the conveyance due to contact with the grain stalk and a detection unit (1) that uses a switch that detects the reciprocation of the sensor lever (16).
7), the front side position of the harvested grain culm is located between the upper head sensor (S ₁ ) and the lower head sensor (S ₂ ), and the lower head sensor (S ₂ ) is Is detected as being in the proper handling depth range.

Next, a control structure for operating the handling depth adjusting means (C) and switching the posture of the weeding implement (9) will be described.

As shown in FIG. 1, a control device (H) using a microcomputer is provided, and the control device (H) has an instruction switch (S ₅ ) as instruction means for instructing a mowing operation, and the limit switch (S). ₃ ), (S ₄ ), the head sensors (S ₁ ), (S ₂ ), a stock sensor (S ₀ ) for detecting whether or not grain culm is supplied to the transport start end of the vertical transport device (8). The start command switch (S ₆ ) and the threshing switch (S ₇ ) for handling depth control are connected respectively.

Then, when an instruction switch (S ₅₎ is not turned ON, like the reaper culms tip side position of is located between the upper tip sensors (S ₁₎ and a lower tip sensor (S ₂₎ Activate the handling depth adjusting means (C) and switch the weeding implement (9) to the working posture.

On the other hand, is instruction switch (S ₅₎ is turned ON, with the Kariage operation is instructed, the partial grass tool actuates the threshing depth adjusting means (C) Time depth set the ironing side (9) stores The posture is switched.

That is, the control means (100) using the control device (H)
Is configured.

Next, the control operation of the control device (H) will be described based on the flowchart of FIG. However, this control operation takes several ms.
It will be repeated once per ec.

First, the handling depth is checked by checking the start command switch (S ₆ ) and the threshing switch (S ₇ ), and if both are ON, the presence of grain stalks from the output of the stock sensor (S ₀ ). Detect whether or not.

If the stock sensor (S ₀ ) is in the ON state, it is determined that the harvesting operation is being performed, and it is detected whether or not the instruction switch (S ₅ ) is turned on.

If an instruction switch (S ₅₎ is OFF, threshing depth so as to be located between the tip sensor reaper tip position of the culms of the top as described above (S ₁₎ and a lower tip sensor (S ₂₎ Control and switch the weeding implement (9) to the working posture.

On the other hand, if the instruction switch (S ₅₎ is ON, with increasing setting time reaper the (B), threshing depth adjusting means (C)
To the deep handling side. In addition, the weeding implement (9) is switched to the storage posture.

If the stock sensor (S ₀ ) is in the OFF state, weeding tools (9)
Then, it is checked whether or not the state is after the operation toward the deep handling side is performed, and if so, the adjustment to the shallow handling side by the set amount is performed, and then the adjustment of the handling depth is stopped. However, if the operation to the shallow handling side is not performed, the process returns as it is. With this configuration, when it is necessary to prevent the collision in the ridge near the end of the working stroke during working reaper, when the indication switch (S ₅₎ starts Kariage operation is turned ON, The mowing part (B) cuts the planted grain culm while ascending, but at this time, the weeding implement (9) is switched to the retracted posture, so that the mowing operation is performed by the weeding implement (9). Even if it is started later than in the case, it is possible to avoid collision with the ridge as much as possible, and to avoid disadvantages such as extremely shortened culm length of harvested grain culm and increase of uncut grain culm. Can be.

(Another embodiment)

In the above embodiment, the case where the handling depth is automatically adjusted based on the detection information of the tip sensors (S ₁ ) and (S ₂ ) when the mowing operation is not instructed has been described. ,
The present invention can be applied even when the handling depth is not automatically adjusted.

The specific configuration of each part can be variously changed, such as a configuration in which the feed chain (7) is moved in parallel in a direction away from the threshing device (8) as the handling depth adjusting means (C).

Further, in the above embodiment, the mowing unit (B) is automatically raised, but the mowing unit (B) may be manually raised.

In the claims, reference numerals are provided for convenience of comparison with the drawings, but the present invention is not limited to the configuration shown in the attached drawings.

[Brief description of the drawings]

Drawings show an embodiment of a combine concerning the present invention, Drawing 1 is a figure showing the side and control composition of an important section, Drawing 2 is a front view of a mounting part of a tip sensor, Drawing 3 is a flow chart of control operation, FIG. 4 is a side view of the front part of the combine. (2) threshing device, (8) transport device, (9)
Weeding tools (100) Control means (B) Cutting unit
(C)… handling depth adjustment means, (M ₁ )… attitude switching means,
(S ₅₎ ...... instruction means.

Claims (1)

(57) [Claims] A cutting unit (B) capable of raising and lowering a grain stalk, and a transport device (8) for transporting the harvested grain stalk.
A threshing device (2) for threshing the transported grain culm, and a handling depth adjusting means (C) for adjusting the handling depth of the threshing device (2); and the cutting unit (B). ) with increasing and instruction means for instructing that the Kariage actuating reap culms (S _5), along with the fact is indicated a Kariage actuated by the instruction means (S _5), the threshing depth Control means (10) for operating the adjusting means (C) to the deep handling side
0), and an action posture in which the weeding implement (9) provided in the cutting unit (B) is projected forward with respect to the cutting unit (B). Attitude switching means (M ₁ ) for switching to a retracted attitude to the rear of the fuselage is provided, and the control means (100) is instructed by the instructing means (S ₅ ) to perform the mowing operation. The weeding tool (9) is in the retracted position when
And a combiner configured to actuate the position switching means (M ₁ ) such that the weeding implement (9) is in the operating position when it is not instructed to perform the mowing operation.