JP2603756B2 - Combine handling depth control device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to a handling depth adjusting means for adjusting the handling depth of the threshing device in a grain culm conveying path to the threshing device, and the handling depth A first sensor for detecting the tip position of the transported grain culm is provided in a path portion on the lower side in the grain culm transport direction than the handling depth adjustment point by the adjusting means, and a target handling is performed based on the detection information of the first sensor. The present invention relates to a combine depth control device provided with control means for operating the depth control means to maintain the depth.

[Conventional technology]

Conventionally, in the combine handling depth control device as described above, if the handling depth adjusting means is operated based only on the detection information of the first sensor, the culm length and cutting height of the harvested grain culm rapidly increase. When the culm length of the transported grain culm fluctuates, even if the handling depth adjusting means is operated to correct the change in the culm length of the transported grain culm, the change in the culm length is caused by the transported grain culm being the first. Since the detection is not performed until the sensor reaches the sensor, the operation of the handling depth adjusting means is delayed, and the change in the culm length cannot be followed, and the occurrence of shallow or deep handling cannot be avoided.

Therefore, in order to prevent a problem such as the above-described shallow handling from occurring, the culm length detecting means for detecting the culm length of the transported cereal culm in the path portion on the upper side in the cereal culm transport direction from the handling depth adjustment point is used as a culm length detecting means. Three sensors are arranged at intervals in the direction, and based on culm length detection information determined from a combination of information on the presence or absence of grain culm of each sensor, if the culm length is long, the handling depth adjusting means is set to shallow. An improved technique has been proposed in which the handle is operated on the handling side, and when the culm length is short, the handling depth adjusting means is operated on the deep handling side (Japanese Patent Publication No. 1-3184).
No. 4).

[Problems to be solved by the invention]

However, in the above-described improved technology, the detection accuracy of the culm length is low while the detection accuracy of the culm length is high, since the ear position of the grain culm is detected as the same culm length in a range located between the adjacent sensors. When a large number of sensors are installed at narrow intervals, there is a disadvantage that the apparatus configuration for the culm length detecting means and its control processing becomes complicated and expensive.

An object of the present invention is to solve the above-described drawbacks and to perform appropriate handling depth control while avoiding the occurrence of shallow or deep handling even when the culm length of the transported grain stalk suddenly changes, and to control the handling depth. Another object of the present invention is to obtain a simple and inexpensive configuration of the handling depth control device by obtaining only the culm length detection information necessary for the adjustment.

[Means for solving the problem]

In order to achieve this object, a first characteristic configuration of the combine-depth control device according to the present invention is as follows. A second sensor for detecting the position is provided so as to be capable of adjusting the position in the culm body direction so as to be able to be positioned corresponding to the position corresponding to the lower limit of the predicted culm length change range, and the control means is provided with the second sensor. The sensor is configured to actuate the handling depth adjusting means to the deep handling side as the sensor detects the absence of the grain culm.

A second characteristic configuration is that a third sensor that detects a tip position of a transported grain culm is located at a position closer to the grain culm than the second sensor,
The position is adjustable in the culm direction so that the culm can be positioned corresponding to the position corresponding to the upper limit of the predicted culm length change range, and the control means detects the presence of the grain culm by the third sensor. As a result, the handling depth adjusting means is operated to the shallow handling side.

(Operation)

It is considered that the culm length of the cereal culm in the same field usually does not vary so much. That is, it is considered that a predicted change range of the grain stem length corresponding to the field can be set. When the grain culm length deviates from the predicted culm length change range, it can be determined that the culm length has rapidly changed.

Therefore, in the first characteristic configuration, the change in the position of the second sensor in the culm length direction is adjusted to correspond to the position corresponding to the lower limit of the predicted culm length change range. Can be detected. Then, when the second sensor detects the absence of the grain culm, it is possible to suppress the shallow handling by operating the handling depth adjusting means in advance to the deep handling side.

In the second characteristic configuration, the change in the position of the third sensor in the culm direction is adjusted to correspond to the position corresponding to the upper limit of the predicted culm length change range, thereby detecting a change in the grain culm length to the long culm side. it can. Then, when the third sensor detects the presence of the grain culm, by operating the handling depth adjusting means to the shallow handling side in advance, it is possible to suppress the deep handling.

〔The invention's effect〕

Therefore, even if the culm length of the transported grain culm changes rapidly,
In the first feature configuration, the occurrence of shallow handling can be avoided, and in the second feature configuration, the occurrence of deep handling can be avoided. As a result, appropriate handling depth control can be performed, and the handling depth can be reduced. When performing control, the position of a single sensor (first or second sensor) is adjusted in the direction of the culm body, and only the culm length detection information necessary for avoiding the occurrence of shallow or deep handling is accurately obtained. As compared with the conventional arrangement of a large number of sensors to form a culm length detecting means, a simple and inexpensive apparatus for the culm length detecting means and its control processing is used for a combine. A depth control device can be obtained.

〔Example〕

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

As shown in FIG. 6, the combine is equipped with a reaper (4) at the front of the machine having a pair of right and left crawler traveling devices (1), a threshing device (2), and a driver's seat (3). ing.

The reaping unit (4) includes a pair of right and left raising devices (5),
A cutting blade (6) for cutting the stem of the raised stem and stem, a vertical transport device (8) for transporting the harvested grain culm to the threshing feed chain (7), and a vertical transport device (8) for transporting the harvested grain culm. The auxiliary transport device (9) is provided.

As shown in FIG. 1, an engine (E) and the crawler traveling device (1) are interlocked and connected via a hydraulic stepless transmission (10), and the engine (E) and the threshing device are connected. And (2) are interlocked and connected via a belt tension type threshing clutch (11).

The transmission (10) is interlockingly connected to a manually operated shift lever (13) via a link mechanism (12). A speed change motor (14) is linked to the link mechanism (12) via a friction type transmission mechanism (15). In other words, the gear shift operation can be automatically performed by the gear change motor (14) while the gear shift lever (13) can be artificially operated to change the gear.

Further, a threshing clutch lever (16) for manually turning on and off the threshing clutch (11) is provided, and a threshing switch (S ₃ ) that is turned ON in accordance with the on / off operation is provided.

As shown in FIG. 6, the vertical transport device (8) includes a gripping transport device (8A) for gripping and transporting the harvested grain culm with the root of the harvested grain, and a locking transport for locking and transporting the tip side of the harvested grain culm. A feed chain (7) for transporting the harvested grain culm from the auxiliary transport device (9) to the rear of the machine in an upright position and changing the harvested grain culm, which has been changed to the sideways-down attitude at the transport end portion, (7).
It is configured to supply to. The vertical transport device (8) has a terminal end pivotally supported around the horizontal axis (P) so as to adjust the handling depth by swinging up and down. That is, the support position of the harvested grain culm supplied from the auxiliary conveying device (9) is changed in the direction of the culm along with the vertical swing, and as a result, the vertical conveying device (8) is used to remove the threshing feed chain (7). The position of the harvested grain culm to be transferred to the culm is changed to the culm body direction.

The swing operation structure of the vertical transport device (8) will be described. As shown in FIG. 6, an arm (18) which is vertically swung by a handling depth adjusting motor (17) as a handling depth adjusting means is provided. At the same time, the arm (18) and the vertical transport device (8) are interlocked and connected via a relay link (19), so that the arm (18) is swingably operated by the operation of the motor (17). I have.

As shown in FIG. 5 and FIG. 6, the grain threshing device (2) is located on the lower side in the grain stem transport direction than the handling depth adjustment point of the grain culm transportation route and the threshing device (2). Grain stalk entrance (2
In the path where the grain culm is transported in a sideways posture while guiding the tip side with the placement guide plate (21) that receives and guides the grain culm tip side toward 0), the handling depth is detected. A pair of first
Sensors (S ₁ ) are arranged side by side in the culm direction of the transported grain culm.

As shown in FIG. 5, the first sensor (S ₁ ) detects a sensor bar (22) that can swing to the lower side in the grain culm conveying direction with the upper end as a fulcrum, and detects the swing of the sensor bar (22). Switch section (23).

In the following description, of the two sensors (S ₁ ), the one on the tip side (S _1A ) is called a long culm sensor, and the one on the stock side (S _1B ) is called a short culm sensor.

As shown in FIG. 3 and FIG. 6, a second sensor (S ₂ ) is provided on the right side elevating device (5), and the second sensor (S ₂ ) is located closer to the tip of the grain stem than the second sensor (S ₂ ). third sensor (S ₃₎ is provided. Each of the second sensor (S ₂ ) and the third sensor (S ₃ ) includes a sensor bar (30) that retreats and swings rearward in the grain conveying direction and is urged to return to the conveying upper side, and the sensor bar (30). ) Switch to detect backward swing (3
1) In other words, each sensor bar (30), (30)
Are provided so as to protrude into a path portion on the upstream side in the grain culm transport direction from the handling depth adjustment point.

As shown in FIG. 2, the third sensor (S ₃ ) is predicted so that the second sensor (S ₂ ) can be positioned corresponding to the position corresponding to the lower limit of the predicted culm length change range. The two sensors (S ₂ ) and (S ₃ ) are provided so as to be capable of changing the position in the direction of the culm so that they can be positioned corresponding to the position corresponding to the lower limit of the culm length change range. The addition of description, both sensors slidably supported in稈身direction (S _2), respectively the rack (33A), is (33B) formed in the support bracket _{(S 3) (32A),} (32B) , Pinions (34A), (34B) screwed to these racks (33A), (33B)
Are linked to the electric motors (35A) and (35B) for position adjustment. That is, the positions of both sensors (S ₂ ) and (S ₃ ) can be changed by driving the electric motors (35A) and (35B). Both electric motors (35A) and (35B) are driven based on instructions from manual switches (36A) and (36B) for position adjustment provided in the driver's seat (3), respectively (see FIG. 1).

Incidentally, (S ₀ ) in FIG. 3 is a stock switch.

Then, the first to third sensors (S ₁ ), (S ₂ ), (S ₃ )
A control device (H) for controlling the handling depth adjusting motor (17) based on detection information such as the above is provided.

 Incidentally, (24) in the figure is an alarm device.

If you add a description about adjusting the handling depth, in principle,
Based on the detection information of the first sensor (S _1), actuating the motor (17) to maintain the target threshing depth.

However, as the second sensor (S ₂ ) detects the absence of the cereal stalk, the motor (17) is operated to the side where the set time is deepened. The third sensor (S ₃₎ actuates the said motor (17) a set time superficial ironing side with the detecting the presence of culms.

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

First, the stock sensor (S ₀ ) is checked to determine whether or not the harvesting operation is being performed.

If the harvesting operation is being performed, it is checked whether the detection information of the second sensor (S ₂ ) has changed.

When it changes from ON to OFF, the motor (1
7) Operate to the deep handling side.

Then, it is checked whether or not the detected information of the third sensor (S ₃₎ is changed. When it changes from OFF to ON, it is operated to the shallower side for a set time.

When there is no change in the detection information of the second sensor (S ₂ ) and the third sensor (S ₃ ), based on the detection information of the first sensor (S ₁ ), the long culm sensor (S _1A ) and the short culm sensor ( The motor (17) is controlled so as to maintain the state in which the spikes of the transported grain culm pass through S _1B ).

The long culm sensor (S _1A ) is ON and the short culm sensor (S _1A )
_{If 1B} ) is OFF, an alarm is generated.

That is, using the control device (H), based on the detection information of the first sensor (S ₁ ), the handling depth adjusting means (17) is operated to maintain the target handling depth, and As the second sensor (S ₂ ) detects the absence of the grain stalk, the handling depth adjusting means (17) is moved to the deep handling side, and the third sensor (S ₃ ) detects the presence of the grain stalk. The control means (100) for operating the handling depth adjusting means (17) to the shallow handling side in response to the detection of the pressure.

[Another Embodiment] In the above embodiment, the second sensor (S ₂ ) and the third sensor (S ₂ ) are operated by the manual switches (36A) and (36B) provided in the driver's seat (3).
The support brackets (32A) and (32B) of the sensor (S ₃ ) were configured to be slidable in the stem direction by remote control.
A configuration in which remote control is not possible may be employed. For example, the mounting hole of the support bracket may be formed as a long hole whose longitudinal direction is the culm direction.

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]

The drawings show an embodiment of a combine depth control device according to the present invention. FIG. 1 is a block diagram of a control structure, FIG. 2 is a side view of a main part showing a mounting portion of a second sensor, and FIG. FIG. 4 is a rear view of a main part of the raising device, FIG.
FIG. 5 is a schematic rear view of the first sensor mounting portion, and FIG. 6 is a side view of a main part of a front portion of the combine. (2) ...... threshing apparatus (17) .... threshing depth adjustment means (100) ... control unit, (S ₁₎ ... first sensor, (S ₂₎ ...... second sensor, (S ₃ )... Third sensor.

Claims (2)

(57) [Claims] 1. A handling depth adjusting means (17) for adjusting the handling depth of said threshing device (2) in a grain culm conveying path to the threshing device (2), and the handling depth adjusting means (17). ), A first sensor (S ₁ ) for detecting the tip position of the transported grain culm is provided in a path portion on the downstream side of the grain culm transport direction from the handling depth adjustment point according to ( ₁ ), and the first sensor (S ₁ ) detects the first sensor (S ₁ ). A combine depth control device provided with control means (100) for operating said depth control means (17) to maintain a target depth based on the information. A second part for detecting the position of the tip of the transported cereal stem in the path portion on the upstream side in the transport direction of the cereal stem from the location
The sensor (S ₂ ) is provided so as to be position-adjustable in the direction of the culm body so that it can be positioned corresponding to the position corresponding to the lower limit of the predicted culm length change range.
0) is the handling depth of the combine configured to operate the handling depth adjusting means (17) to the deep handling side as the second sensor (S ₂ ) detects the absence of grain culm. Control device. 2. A combine depth control device according to claim 1, wherein said third sensor detects a tip position of a transported grain culm at a position closer to a grain culm tip than said second sensor (S ₂ ). (S ₃₎
Is provided so as to be position-adjustable in the culm body direction so as to be able to be positioned corresponding to the position corresponding to the upper limit of the predicted culm length change range, and the control means (100) is provided with the third sensor (S ₃ ) A combine depth control device configured to actuate the depth control means (17) to the shallow side when detecting the presence of grain culm.