JPH04200318A - Combine harvester handling depth control device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention provides a processing depth adjusting means for adjusting the processing depth in the threshing device, and a processing depth adjusting means for adjusting the processing depth in the threshing device, on a culm conveying path to the threshing device. A first sensor for detecting the position of the tip of the conveyed culm is provided in a path portion on the downstream side in the culm conveyance direction from the handling depth adjustment point by the adjustment means, and based on the detection information of the first sensor,
The present invention relates to a handling depth control device for a combine harvester, which is provided with a control means for operating the handling depth adjusting means to maintain the handling depth at a target handling depth.

[Conventional technology]

Conventionally, the handling depth control device for a combine harvester as described above is configured to operate the handling depth adjusting means only based on the detection information of the first sensor.

[Invention or problem to be solved]

When the culm length or cutting height of the reaped husk culm changes suddenly, the culm length of the conveyed husk culm changes. Therefore, in order to maintain the target handling depth, the handling depth adjusting means must be operated to correct the change in the culm length.

However, in the above conventional technology, the change in the culm length is not detected until the conveyed culm reaches the first sensor, so the operation of the handling depth adjustment means is delayed, and the change in the culm length cannot be followed, resulting in shallow handling or deep handling. It is not possible to avoid the occurrence of mistreatment.

An object of the present invention is to provide a combine that eliminates the above-mentioned conventional drawbacks and can avoid shallow handling or deep handling and perform appropriate handling depth control even when the culm length of the conveyed shell culm changes rapidly. The point is to obtain a handling depth control device.

[Means to solve the problem]

In order to achieve this object, a first characteristic configuration of the handling depth control device for a combine harvester according to the present invention is such that a softening point of the conveyed shell culm is placed in a path portion on the upper side in the direction of conveying the shell culm than the handling depth adjustment point. A second sensor for detecting the position is provided so as to be adjustable in position in the direction of the culm, and the control means adjusts the handling depth toward the deep handling side as the second sensor detects the absence of the culm. It is configured to actuate the means.

A second characteristic configuration is that a third sensor is provided at a position closer to the culm end than the second sensor, the position of which is adjustable in the direction of the culm; The handling depth adjusting means is configured to operate toward the shallow handling side when the presence is detected.

[For production]

It is thought that the culm length of shell culms in the same field usually does not vary greatly. In other words, it is possible to set the appropriate range of shell culm length corresponding to the field. Furthermore, if the culm length deviates from the above-mentioned appropriate range, it can be determined that the culm length has changed rapidly.

Therefore, in the first characteristic configuration, a change in the shell culm length toward the short culm side can be detected by adjusting the second sensor to the lower end position of the appropriate range. In addition, shallow handling can be suppressed by operating the handling depth adjusting means to the deep handling side in advance.

In the second characteristic configuration, a change in the shell culm length toward the long culm side can be detected by adjusting the third sensor to the upper end position of the appropriate range. Further, deep handling can be suppressed by operating the handling depth adjusting means to the shallow handling side in advance.

〔Effect of the invention〕

Therefore, even if the culm length of the transported shell culm changes rapidly, the first characteristic configuration can avoid the occurrence of shallow handling, and further,
With the second characteristic configuration, it is possible to avoid the occurrence of excessive handling. As a result, it is possible to obtain a combine harvester handling depth control device that can perform appropriate handling depth control.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings.

As shown in Fig. 6, the combine harvester is equipped with a reaping section (4) at the front of the machine, which is equipped with a pair of left and right crawler running devices (1), a threshing device (2), and a driver's seat (3). are doing.

The reaping section (4) includes a pair of left and right pulling devices (5), a cutting blade (6) that cuts the stock base of the pulled stem culm, and a vertical conveyance device that conveys the cut culm to the threshing feed chain (7). (8),
It also includes an auxiliary conveyance device (9) for conveying the cut husk to the vertical conveyance device (8).

As shown in FIG. 1, the engine (E) and the crawler traveling device (1) are interlocked and connected via a hydraulic continuously variable transmission (IO), and the engine (E) and the threshing device ( 2) or belt tension type threshing clutch (
11).

The transmission device (10) is operatively connected to a manually operated transmission lever (13) via a link mechanism (12). It is operatively connected to the link mechanism (12) via a speed change motor (14) or a friction type transmission mechanism (15). In other words, instead of being able to manually perform a speed change operation using the speed change lever (13), the speed change operation can also be performed automatically using the speed change motor (14).

Further, a threshing clutch lever (16) for manually operating the threshing clutch (11) on and off is provided, and a threshing switch (S1) is provided which is turned on when the threshing clutch lever (16) is engaged.

As shown in Fig. 6, the vertical conveyance device (8) includes a clamping conveyance device (8A) that clamps and conveys the stock side of the cut husk culm, and a locking conveyance device that locks and conveys the tip side of the cut husk culm. A threshing feed chain (8B) conveys the cut husk from the auxiliary conveyance device (9) to the rear of the machine in an upright position, and at the end of the conveyance changes the cut husk culm to a sideways posture.
). Further, this vertical conveying device (8) is pivoted around its terminal end or horizontal axis (P), and the handling depth can be adjusted by vertically swinging it. In other words, the supporting position of the cut husk culm supplied from the auxiliary conveyance device (9) is changed in the direction of the culm with the vertical swing, and as a result, the threshing feed chain (7) is moved from this vertical conveyance device (8) to the culm. The position of the harvested husk culm delivered to the culm is changed in the direction of the culm.

To explain the swinging operation structure of the vertical conveyance device (8), as shown in FIG. 6, an arm (
18) is provided, and its arm (18) and vertical conveyance device f! (8) and are interlocked and connected via a relay link (19), so that they can be oscillated by the operation of the motor (17).

As shown in FIGS. 5 and 6, the culm conveyance path to the threshing device (2) is located on the lower side of the handling depth adjustment point in the direction of the husk conveyance, and Culm receiving port (20
) A guide plate (21) for receiving and guiding the tip side of the shell culm is placed on the path where the tip side of the shell culm is conveyed in a sideways posture with a guide plate (21) that receives and guides the tip side of the shell culm. first of a pair
The sensors (S1) are arranged in parallel in the culm direction of the conveying shell culm.

As shown in FIG. 5, the first sensor (S1) detects a sensor bar (22) that is swingable downward in the culm transport direction using the upper end as a fulcrum, and the swing of the sensor bar (22). It consists of a switch section (23).

In the following description, of the two sensors (S1), those on the tip side (S, A) will be referred to as long culm sensors, and the one on the plant side (Sl-) will be referred to as short culm sensors.

Further, as shown in FIGS. 3 and 6, a second sensor (S1) is provided on the right-hand pulling device (5), and a third sensor (S1) is provided at a location closer to the tip of the culm than the second sensor (S1). Sensor (S1
) is provided. The second sensor (S1) and the third sensor (S1) each include a sensor bar (30) that is swung backward in the direction of conveyance of the culm and urged back to the upper side of conveyance, and It consists of a switch part (31) that detects rocking. That is, each sensor bar (30
), (30) are provided so as to protrude into the path portion on the upper side in the shell culm conveyance direction than the handling depth adjustment location.

As shown in FIG. 2, both the sensors (S1), (S1
) is provided so that its position can be freely changed and adjusted in the culm direction. To explain, both sensors (S1) are slidably supported in the culm direction, a support bracket (32A) for (S1),
(32B) are formed with racks (33A) and (33B), respectively, and pinions (34A) and (34B) screwed into these racks (33A) and (33B) are electric motors (35A) and (34B) for position adjustment. 35B). In other words, the positions of both sensors (S1), (S1) can be changed by driving the electric motors (35A), (35B). Both electric motors (35A)
, (35B) are driven based on instructions from position adjustment manual switches (36A) and (36B) provided in the driver's seat (3), respectively (see FIG. 1).

In addition, (So) in FIG. 3 is a stock switch.

And the first to third sensors (S1), (sz),
A control device (H) is provided that controls the handling depth adjustment motor (17) based on detected information such as (sz).

Note that (24) in the figure is an alarm device.

To explain the adjustment of the handling depth, in principle, the motor (17) is operated to maintain the target handling depth based on the detection information of the first sensor (S1).

However, when the second sensor (S2) detects the absence of the culm, the motor (17) is operated to the deep handling side for a set time. Further, when the third sensor (S3) detects the presence of the culm, the motor (17) is operated for a set time.

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

First, the stock sensor (S1) is checked to determine whether or not reaping work is in progress.

If the reaping work is in progress, it is checked whether the detection information of the second sensor (S2) has changed.

When changing from ON to OFF, the motor (
17) to the deep handling side.

Next, it is checked whether the detection information of the third sensor (S3) has changed. Then, when it changes from OFF to ON, it is operated to the shallow handling side for a set time.

When there is no change in the detection information of the second sensor (S2) and the third sensor (S3), based on the detection information of the first sensor (S1), the long culm sensor (S, A) and the short culm sensor (S,
1), the motor (17) is controlled so as to maintain the condition in which the tokumitsu part of the conveying shell culm passes through the interior of the conveyor shell (1).

Further, if the long culm sensor (S+A) is ON and the short culm sensor (S, 1) is OFF, an alarm is generated.

That is, by using the control device (H), the control means (10
0) is configured.

[Another example]

In the above embodiment, the second sensor (S2
) and a support bracket (32A) for the third sensor (S3).

(32B) may be configured so that it can be slid in the culm direction by remote control, or it may be configured such that remote control cannot be performed. It can be formed into a hole.

It should be noted that the present invention is not limited to the structure of the attached drawings by adding numerals in the claims for convenient comparison with the drawings.

[Brief explanation of the drawing]

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 side view of the main part showing the mounting part of the second sensor, and FIG. A rear view of the main parts of the lifting device, Figure 4 is a flowchart of control operation,
FIG. 5 is a schematic rear view of the first sensor mounting part, and FIG. 6 is a side view of the main parts of the front part of the combine. (2)... Threshing device, (17)... Handling depth adjustment means, (100)... Control means, (S
+)...First sensor, (S2)...Second sensor. (S3)...Third sensor.啼 Representative Patent Attorney Osamu Kitamura Figure 1 Figure 41i! ! 2 51st! II 23 Figure 6

Claims (1)

[Claims] 1. A handling depth adjusting means (17) for adjusting the handling depth in the threshing device (2), on the culm conveying path to the threshing device (2), and a handling depth adjustment means (17) for adjusting the handling depth in the threshing device (2). A first sensor (S_1) for detecting the position of the tip of the conveyed shell culm is provided in a path portion on the downstream side in the direction of conveyance of the shell culm from the handling depth adjustment point by the means (17), and the first sensor (S_1) A handling depth control device for a combine harvester, comprising a control means (100) for operating the handling depth adjusting means (17) to maintain the handling depth at a target handling depth based on detection information, A second sensor (S_2) for detecting the position of the tip of the conveyed culm is provided in a path portion on the upper side of the adjustment point in the direction of conveyance of the culm, and the position can be freely changed and adjusted in the direction of the culm.
The control means (100) is configured to control the second sensor (S_2).
A handling depth control device for a combine harvester, wherein the handling depth control device for a combine is configured to operate the handling depth adjusting means (17) toward a deeper handling side when the controller detects the absence of a shell culm. 2. The handling depth control device for a combine harvester according to claim 1, wherein a third sensor (S_2) is provided at a location closer to the tip of the culm than the second sensor (S_2), the position of which is adjustable in the direction of the culm. and the control means (100) controls the third sensor (
A handling depth control device for a combine harvester, wherein S_3) is configured to operate the handling depth adjusting means (17) to the shallow handling side when detecting the presence of a culm.