JPH02255012A - Controlling unit for tilling depth in combine - Google Patents

Abstract

PURPOSE:To optimize the threshing depth by providing a threshing depth- controlling means so that the actuator operates on the deep threshing side, when the height detector in the reaping unit is in a specific state. CONSTITUTION:The reaping unit is equipped with a sensor S3 for detecting the height from the ground and with an electric motor 10 as an actuator for controlling the threshing depth. The threshing depth control unit 100 allows the electric motor 10 to operate toward the deeper threshing side, when it judges that the increase for the unit time in the reaping unit exceeds the prescribed amount and the reaping amount exceeds a prescribed level, based on the detection information from the sensor S3.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention is characterized in that the reaping section is provided to be able to swing up and down with respect to the machine body, and the vertical conveyance device for conveying the cut husk to the threshing device can be operated at a handling depth. A sensor for detecting the handling depth is provided to detect the position of the tip of the culm being transported by the vertical transport device, and the handling depth The present invention relates to a handling depth control device for a combine harvester, which is provided with a handling depth control means for controlling an actuator for adjusting the handling depth so as to maintain a set handling depth based on detection information of a detection sensor.

[Conventional technology]

Conventionally, the handling depth control device of this type of combine harvester adjusts the handling depth based on the detection information of the handling depth detection sensor even when the cutting section is raised when cutting the culm apart. was configured to do so.

[Problem to be solved by the invention]

In the above conventional technology, when the reaping part is suddenly raised,
The amount of adjustment of the handling depth cannot keep up with the amount of rise of the cutting section, resulting in a plate-forming state. As a result, unhandled grains and spilled ears occurred.

An object of the present invention is to eliminate the above-mentioned conventional drawbacks.

[Means to solve the problem]

In order to achieve this object, the handling depth control device for a combine harvester according to the present invention is characterized in that a height detection means for detecting the height of the reaping section relative to the machine body or the height relative to the ground is provided, and the handling depth control device The means further controls the actuator upon determining that the amount of rise of the reaping section per unit time exceeds a set amount based on the detection information of the height detecting means and that the amount of rise of the reaping section exceeds the set amount in that state. It is designed to operate toward the side.

[For production]

When the height detection means detects that the reaping section has suddenly risen, the adjustment is made to the deeper handling side, which prevents the cutting from becoming a plate and ensures proper handling depth. Can be maintained.

〔Effect of the invention〕

Since it is possible to maintain an appropriate handling depth even when the reaping section is suddenly raised during special handling, etc., it is possible to use a combine harvester handling depth control device that reduces the risk of unhandled ears or spilled ears. I was able to obtain it.

〔Example〕

Embodiments of the present invention will be described below based on the drawings.

As shown in Figure 6, a pair of left and right crawler traveling devices (1
), a threshing device (2), and a control section (3), and a reaping section (4) is installed at the front of the machine body, thereby forming a combine harvester.

The reaping section (4) includes a raising device (5), a cutting blade (6) that cuts the stock base of the raised husk, and a receiver that passes the cut husk to the threshing feed chain (7) of the threshing device (2). It is provided with a vertical conveyance device (8) and an auxiliary conveyance device (9) for conveying the cut husk to the vertical conveyance device (8).

The reaping unit (4) also includes a non-contact height detection sensor (S3) using a reflection type ultrasonic sensor, and a non-contact height detection sensor (S3) that uses a reflection type ultrasonic sensor, and a non-contact height detection sensor (S3) that is conveyed at the conveyance start end of the vertical conveyance device (8). A stock base sensor (SO) is provided that comes into contact with the base of the stem culm to detect whether or not the cutting operation is in progress.

In other words, the height detection sensor (S3) above the ground corresponds to the height detection means.

As shown in FIG. 5, the vertical conveyance device (8) includes a clamping and conveying means (8A) that clamps and conveys the stock side of the cut husk culm, and a locking conveyor that locks and conveys the tip side of the cut husk culm. It consists of a device (8B) and a culm guide plate (8C), and the auxiliary conveyance device (
9) The reaped husk culm is conveyed toward the rear of the machine in an upright position, and the reaped husk culm whose posture is changed to a sideways position at the end of the conveyance is transferred to the threshing feed chain (7). has been done.

The vertical conveyance device (8) has a terminal end with a horizontal axis (P
), and as the vertically swinging movement changes the support position of the reaped husk culm supplied from the auxiliary transport device (9) toward the culm, this vertical transport device (8)
The position of the cut husk culm, which is passed from the threshing feed chain (7) to the threshing feed chain (7), is changed toward the culm, and the threshing device (
The processing depth in step 2) is adjusted.

To explain the swing operation configuration of the vertical conveyance device (8), as shown in FIG. 1, an electric motor (10) is provided as an actuator for adjusting the handling depth, and
A rack (12) is attached to an arm (11) that can freely swing around the arm, and a pinion (13) engages with the rack (12).
) is attached to the electric motor (10).

Further, an inverted U-shaped member (14) which also serves as a frame of the vertical conveyance device (8) and the arm (11) are interlocked and connected via a push rod (15), and the electric motor (10
) by operating the vertical conveyance device (8) in the forward and reverse directions.
) is configured to be swung up and down.

As shown in FIGS. 1 and 5, the inverted U-shaped member (
14), a pair of upper and lower handling depth detection sensors (S1), (
S2) is attached so as to be in contact with the culm being transported by the vertical transport device (8).

That is, as shown in FIGS. 3 to 5, each of the pair of handling depth detection sensors (St) and (S2) is connected to a sensor bar ( 1
6) and a detection unit (17) using a switch to detect the backward swing of the sensor bar (16), and the position on the tip side of the reaped culm is determined by the sensor on the tip side (Sl) and the sensor on the stock base side. (S2), that is, the point on the tip side of the culm is the pair of upper and lower handling depth detection sensors (S1);
(S2), and only the sensor (S2) on the plant side detects the presence of the culm is considered to be within the appropriate handling depth range.

Although not described in detail, as shown in FIG. 3, the detection sensors (S1) and (S2) are configured to be swing-adjustable in the direction of the culm. In other words, the handling depth can be finely adjusted by swinging the swing operating lever (L). and the operation lever (L)
A potentiometer (Pl) is provided to detect the operating position of.

The detection information of this potentiometer (Pl) is used to correct the amount of husk supplied to the threshing device (2), which is detected based on the thickness of the husk layer conveyed by the feed chain (7). It will be done. Incidentally, the detected amount of husk supply is used as control information to automatically adjust the chaff opening of the sorting plate of the threshing device (2) and the air flow rate of the winnower.

As shown in FIG. 1, the detection sensor (Sl).

Based on the detection information of (S2), the electric motor (10
) is provided with a control device (H) using a microcomputer that outputs a drive command to the drive circuit (18).

In other words, a handling depth control means (100) is configured that uses the control device (H) to adjust the handling depth based on the detection information of the pair of detection sensors (S1) and (S2). become.

In the figure, (20) is a threshing switch that detects the on/off operation of the threshing clutch lever (21), and (22) is a switch for starting and superimposing the handling depth control.

In other words, the handling depth control is controlled by the control activation switch (2).
2) is operated to ON, the threshing clutch lever (21)
The control is activated when the stock sensor (So) is in a state of detecting the presence of a culm.

Next, the operation of the control device (H) will be explained based on the flowchart shown in FIG.

First, when the control operation is turned on, the height (v) of the reaping section (4) above the ground at that time is set as the reference height (VM) (#l).

Next, the amount of rise (△■) of the reaping section (4) per unit time is determined based on the detection information of the sensor for detecting the height above the ground (S3).
Determine whether or not exceeds the set amount (△S) (#2)
. If it is not exceeded, reset the flag (F)#
3) If it exceeds, please set the flag (F)#
4), then the height (V) of the cutting section (4) above the ground at that point.
It is determined whether the difference between the reference height (VM) and the reference height (VM) exceeds a set amount (Vs) (#5).

As a result of this determination, if the amount of increase per unit time (△V) does not exceed the set amount (△S), the handling depth detection sensors (S1), (S2)
Normal control is performed to adjust the treatment depth according to the detected information (#6).

If the difference between the height above the ground (■) and the reference height (VM) exceeds the set amount (Vs), deep handling control is performed (#
7). That is, 11 seconds after the deep handling control command, the electric motor (10) is driven to the deep handling side for 12 seconds.

Then, reset the flag (F) (#8).

Check the flag (F) after control command (#9).

If the flag (F) is zero, the reaping section (4) at that time
The setting is updated using the height above the ground (■) as the reference height (VM) (#10). If the flag (F) is not zero, the previous setting is maintained. In other words, this flag (F) is the reaping part (4)
This is used to set a reference height (VM) for checking the amount of rise due to a sudden rise in the height.

Then, the process is repeated from step (#2) of checking the amount of increase (ΔV) per unit time of the reaping section (4).

[Another example]

In the above embodiment, the height of the reaping section relative to the ground is detected, but the height relative to the vehicle body may also be detected.

In the above embodiment, when deep handling control is performed when the reaping part suddenly rises, a certain period of time (t2) after a certain period of time (tl) from the control command.
) Although the electric motor is driven, for example, the control amounts for the vehicle speed and the amount of rise of the reaping section may be tabulated and the control amounts may be changed based on such information.

Incidentally, although reference numerals are written in the claims section for convenient comparison with the drawings, the present invention is not limited to the structure shown in the accompanying drawings.

[Brief explanation of drawings]

The drawings show an embodiment of the handling depth control device for a combine harvester according to the present invention, FIG. 1 is a block diagram of the control configuration, FIG. 2 is a flowchart of control operation, and FIGS. 3 to 5 show handling depth detection. The installation of the sensor is shown in Figure 3, a rear view of the main part,
FIG. 4 is a plan view of the main part, and FIG. 5 is a front view. FIG. 6 is a front side view of the combine. (2)... Threshing device, (4)... Reaping section, (8)... Vertical conveyance device, (10)...
...Actuator, (S1), (S2)...
Sensor for detecting handling depth, (S3)...Height detection means, (△V)...Amount of rise, (△S), (V
s)... Setting amount, (100)... Handling depth control means.

Claims (1)

[Claims] The reaping section (4) is provided to be able to swing up and down with respect to the machine body, and a vertical conveying device (
8) is provided so as to be able to swing freely around the end of the conveyance as a fulcrum to adjust the handling depth, and the handling depth detection sensors (S_1) and (S
_2) is provided to detect the position of the tip of the culm being transported by the vertical transport device (8), and the setting handling is performed based on the detection information of the handling depth detection sensors (S_1) and (S_2). A handling depth control device for a combine harvester, which is provided with a handling depth control means (100) for controlling an actuator (10) for adjusting the handling depth so as to maintain the depth of the cutting part (4). A height detection means (S_3) for detecting the height relative to the aircraft body or the height relative to the ground is provided, and the handling depth control means (100) is controlled by the height detection means (S_3).
When it is determined that the amount of increase (△V) of the reaping section (4) per unit time exceeds the set amount (△S) based on the detection information of A handling depth control device for a combine harvester, which is provided to operate the actuator (10) toward a deeper handling side.