JPS592627A - Height control apparatus of pretreating part of self-running agricultural machine - 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 The disclosed technology belongs to the technical field of automatically adjusting the cutting height of a pre-processing section.

Therefore, this invention detects the shell culm and disengages the steering clutch.
This invention relates to a height control device for a pre-processing section of a self-propelled agricultural machine that is linked to a lever set for detecting a culm and a pre-processing section hydraulic lifting device. The vibration wave is detected in a non-contact manner to properly operate the hydraulic lifting device, while the wave control device interrupts the transmission of the vibration wave in response to the grain culm sensing state of the culm sensing sensor lever, and further, The opening end of a cone integrally extended from the wave emitting/receiving device toward the field is substantially at the water level with the sensor lever, so that the field detection level of the vibration wave and the grain culm sensing level of the sensor lever are made the same. This invention relates to a pre-processing section height control device for eight self-propelled aircraft.

As is well known, conventionally, the cutting height of the pre-processing section while agricultural machinery such as a combine harvester is in motion is determined by rotating a lever of a sensor attached downward from the pre-processing section divider to follow the shape of the field, and depending on the amount of rotation, the hydraulic pressure is controlled. The elevator was activated and adjusted.

Therefore, the pretreatment section has the disadvantage that it moves up and down in response to upheavals and depressions in the field, making it difficult to maintain a stable posture.

On the other hand, when working in wet fields, the lever has the disadvantage that it sinks due to its own weight, making it impossible to accurately measure the cutting height.

Further, a culm sensing sensor is installed in the pre-processing section, and the automatic steering control device turns on/off the steering clutch depending on the culm sensing state of the sensor, and changes the attitude of the pre-processing section with respect to the culm. It is designed to maintain proper maintenance.

The purpose of this invention is to solve the problem of height control of the pre-processing section of self-propelled agricultural machines such as combine harvesters based on the above-mentioned conventional technology, and to solve the problem of controlling the height of the pre-processing section of self-propelled agricultural machines such as combine harvesters based on the above-mentioned conventional technology. It is an object of the present invention to provide an excellent pre-processing section height control device that can accurately measure the cutting height regardless of whether it is mowing or stacking, and which is useful for the agricultural machinery application field in the agricultural industry.

In order to solve the above-mentioned problems, the configuration of the present invention according to the above-mentioned purpose measures the reflection time of vibration waves from the cone opening end of the wave transmitting/receiving device installed in the pre-processing section of the self-propelled agricultural machine during reaping work. , the height of the pretreatment section is controlled in a predetermined manner by operating a hydraulic lifting device in accordance with the measured value;
When the grain culm detection sensor, which is located approximately horizontally with respect to the opening end of the corn and is provided approximately above and below the corn opening, comes into a sensing state, the wave control device cuts off the transmission or reception of the first shark wave and performs row cutting. The gist of this paper is that technical measures have been taken to prevent erroneous measurements of cutting height, regardless of the classification.

Next, one embodiment of the present invention will be described below based on the drawings. In addition, in each drawing, the same reference numerals are used to describe the same parts.

1 is a combine harvester as a self-propelled agricultural machine, and a two-row pre-treatment section 2 is installed at the front of the machine with dividers 3.3.4 attached to the middle on both sides of the lower tip, and is mounted on a crawler 5 at the rear. The link 8 of the hydraulic lifting device @ 7 is attached to the after-treatment device 6 installed.
They are connected via a hydraulic cylinder 9 that engages with the link 8.

Further, the post-processing device 6 includes the pre-processing section 2 and the transport device M1.
A threshing section 11, a brain tank 12, and the like are provided which are connected to each other through a threshing section 11 and a brain tank 12.

In addition, 13 is a field and 14 is a grain culm.

On the other hand, the intermediate divider 4 is equipped with a pre-processing part attitude height control (A I-I C) device 1 which constitutes the gist of the present invention, which will be described later.
A well-known appropriate ultrasonic wave emitting/receiving device @16 as a wave emitting/receiving device of No. 5 and a culm sensing sensor 18 of an automatic steering control device 17, which will be described later, are also provided.

As shown in FIG. 3, the culm detection sensor 18 is attached to the lower part of the intermediate divider 4, and levers 19 and 19', which can be pivoted back from the front and back to both sides, touch the outer step 20. The ultrasonic transmitter/receiver device 16 is formed and extends rearward.
is located behind the culm sensing sensor 18 and inside the divider 4, and is interposed between the two levers 19 and 19', and is oriented toward the field 13 as shown in FIGS. 4a to 5b. The ultrasonic transmitting cone 20 is integrally extended, and its open end 20
' is in the same horizontal position as the levers 19, 19'.

On the other hand, 21 is an ultrasonic 0N10FF as a wave control device.
The switch is linked to the culm detection sensor 18, is connected to the ultrasonic transmitting/receiving device 20, and is connected to the lever 1.
9. One or both of 19' is OFF when the culm is detected.
It is made to work.

In addition, 22 are the four parts of the footprints buried between the row-cut culms.

Therefore, as shown in Fig. 6, the pre-processing section automatically cuts the height
(A) IC) device 15 and the automatic steering control (AD) device 15;
C>17, the input interface 23 that connects the culm sensing sensor 18 and the ultrasonic transmitter/receiver 16, respectively, is connected to the output device 25 via the central processing unit (CPU) 24; is the above ADC device 1
7 side is connected to the steering clutch 21 of the crawler 6 via the hydraulic control device 2G, and the other side is connected to the above-mentioned ultrasonic wave 0N10
The AHC device 15 side is connected to the FF switch 21, while the AHC device 15 side is connected to the pre-processing section hydraulic lifting device 1 via a hydraulic control device 28.
is connected to a hydraulic cylinder 9.

In the above configuration, arrow B in Fig. 2a is used to perform row cutting work.
When the combine 1 is driven in the direction shown in FIG. Input interface 2 shown in Figure 6 for receiving No. 4
The central processing unit (CPU) 24 from the input interface 1 interface 23 measures the reflection time of the ultrasonic waves and supplies an operating current according to the measured value from the output device 25 to the hydraulic control device M28. do.

Then, the hydraulic cylinder 9 is actuated by pressure oil supplied from the hydraulic control device 28, and the cutting height of the pre-processing section 2 is adjusted to the set position.

Of course, even if the ultrasonic wave transmitting/receiving device 16 passes over the recess 22, the cutting height will not be measured from the depth because the ultrasonic wave is irradiating a wide field.

As shown in FIG. 3, the automatic steering control (ADC) device 17 detects when the lever 19 of the culm sensing sensor 18 provided on the intermediate divider 4 of the pre-processing section 2 comes into contact with the culm 14. When the lever 19 senses the culm 14, the CPU 24 energizes the hydraulic control device 26 via the output device 25 and activates the corresponding steering clutch 27 so as to rotate the machine in the direction of mowing. The left and right drive of the cutting crawler 5 is controlled to properly orient the pre-processing section 2 in the direction of the cut culm 14, and furthermore, when both are detected, it is caused to run straight, and at the same time, the sensing signal is transmitted to the ultrasonic wave 0N10FF. switch 21
to cut off the upper air ultrasonic output.

Therefore, as shown in FIG. 2b, the combine 1 is
When traveling in the direction G and exiting the grain separation work, the gaps between the grain culm planting rows are generally narrower than the rows, and the planting rows are also irregular, and the divider 4 divides the stock base of one husk culm 14. Even if one of the levers 19 and 19' are tilted and sensed, the ultrasonic transmitting/receiving device 1G is located between the levers 19 and 19', and the ultrasonic output is cut off. The reflected waves of the pre-processing section are not measured, and the cutting height of the pre-processing section is set in the posture just before sensing.
Even when the user is lying down in the front-rear direction, as shown in FIG. 1, the front end 20' of the cone 20 of the ultrasonic transmitting/receiving device 16 is at the same horizontal position as the lever 19, 19', so there is no possibility of erroneous measurements.

It goes without saying that the embodiments of the present invention are not limited to the above embodiments; for example, the wave emitting and receiving device may be an electromagnetic wave emitting and receiving device, and the wave control device operates to weaken the output of vibration waves. Various aspects can be adopted, such as the following.

As mentioned above, according to the present invention, in the pre-processing section height control device of a self-propelled agricultural machine, the wave transmitting/receiving device basically measures the gap between the field and the pre-processing section in a non-contact state using its vibration waves. Since the hydraulic lifting device in the pre-treatment section is operated, the cutting height can be accurately determined from above the water surface when working in wet fields, and regardless of the soft or hard surface of the field when working in dry fields. Excellent effects are produced.

Further, a wave control device connected to the wave emitting/receiving device is linked to the culm sensing sensor, and in the culm sensing state, controls the transmission output or reflected wave receiving input of the wave emitting/receiving device, but does not measure it; There is no malfunction caused by nearby culms, and the cutting height is maintained at the position immediately before the grain culm is detected. Therefore, the handling depth during threshing is always constant, and there is no unhandled grain or shedding, resulting in a stable harvest. The excellent effect of being able to perform the work easily is achieved.

At this time, since the open end of the cone integrally extended from the wave emitting/receiving device is located approximately horizontally with the culm detection sensor, even if a lodging culm or a divider breaks into the grain culm, Even so, as long as the sensor senses the cutting height, the cutting height will not be measured at the same position, and therefore, a unique stable posture is maintained regardless of the row cutting area, which is an excellent effect.

Therefore, in the grain culm non-sensing state, it is not controlled and the field scene is widely sensed to cover a wide sensing area, and as long as this is the case, the set cutting height can be measured regardless of field holes etc.

[Brief explanation of drawings]

The drawings are explanatory diagrams of one embodiment of the present invention, in which FIG. 1 is a schematic explanatory diagram of a combine harvester, FIG. 2a is a plan explanatory diagram of the row cutting state of the combine harvester, FIG. 3
Figure 1.28 is an enlarged plan view of part A, and Figure 4a is part 3.
Figure 4b is a front explanatory diagram of the same side, Figure 5a is a front explanatory diagram of the operating state of the wave control device in Figure 4a, Figure 5b is a side explanatory diagram of the same side, and Figure 6 is a circuit explanatory diagram. . 27... Steering clutch, 11... Automatic steering control device, 18... Culm sensing sensor, 2... Pre-processing section,
7... Lifting device, 15... Height control device, 20
... cone, 16 ... wave emitting and receiving device, 21.
...Wave control device, 20'...Open end. Applicant Kubota Iron Works Co., Ltd.

Claims (1)

[Claims] A wave generation/reception system that integrally extends a cone in a preprocessing section height control device of a self-propelled agricultural machine that is linked to a culm sensing sensor of an automatic steering control device connected to a steering clutch and a preprocessing section lifting device. and a wave control device for the wave emitting/receiving device, the wave emitting/receiving device being connected to the pre-treatment section hydraulic lifting device, while the wave controlling device is linked to the culm sensing sensor, and A pre-processing section height control device for a self-propelled agricultural machine, wherein the opening end of the cone is positioned substantially horizontally with the culm sensing sensor.