JPH0112586Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention connects a weed cutting tool to the upper end of a rising part formed at the front end of its support rod, and connects an ultrasonic sensor for detecting the ground height of the reaping device to the weed cutting tool. The present invention relates to a reaping harvester disposed between the tool and the rising portion.

The above-mentioned reaping/harvesting machine is designed so that the sensor is placed within the width of the weeding tool to prevent the stem culm from getting caught in the sensor. Conventionally, when there are stem culms or weeds on the side between the weeding tool and its support rod,
When the machine orientation is performed, as shown in FIG. The object enters behind the weeding tool 4a while it is located inside the machine, and as shown in FIG. The drawback was that troubles that interfere with transmission and reception tend to occur.

The purpose of the present invention is to prevent stems and weeds from getting tangled with the weeding rod and interfering with sensor detection even if they get behind the weeding tool.

The characteristic configuration of the present invention is that in the above-mentioned reaping and harvesting machine, the guide tool that slides the stem culm that has entered the back of the weeding tool downward on the proximal end side connected to the rising part of the support rod is connected to the sensor. The reason is that the ultrasonic wave path is detoured.

In other words, even if stem culms or weeds get behind the weeding tool, the guiding tool guides them downwards on the proximal end of the weeding tool support rod so that they do not get caught on the rising part of the weeding tool support rod. It is now possible to better prevent objects that get behind the weeding tool from becoming entangled with the weeding tool support rod, and the sensor can transmit and receive sound waves without any hindrance, allowing reliable height detection. It became.

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

As shown in FIGS. 1 and 2, a self-propelled machine having a crawler-type traveling device 1 is equipped with a threshing section 2, a driving section 3, etc. Two weeding tools for separating weeds 4
a, 4b, three weeding tools 5 for separating the grain culms to be reaped into four pulling paths, four pulling devices 6 for the grain culms to be reaped, pulling up and reaping the grain culms A reaping pre-processing section including a device 7 and a conveying device 8 for supplying reaped grain culms to the threshing section 2 is connected to a cylinder 9.
It is connected to the front part of the self-propelled body in a state where it can be freely swung up and down, thereby forming a combine harvester capable of cutting four rows.

As shown in FIG. 2, an ultrasonic sensor 10 that transmits ultrasonic waves at set time intervals and receives reflected sound waves from the field is provided in the reaping pre-processing section, and the transmitting section of the sensor 10 10a
The height of the reaping device 7 above the ground is detected based on the time required from when the signal is transmitted until the receiver 10b receives the signal, and the cylinder 9 is automatically operated so that the detection result is within a set range. , a device (not shown) for controlling the elevation of the reaping pre-processing section so that the height of the reaping device 7 above the ground is approximately constant is mounted on the self-propelled aircraft;
This allows work to be done while maintaining the stump height almost constant regardless of pitching of the machine.

In order to provide the ultrasonic sensor 10, as shown in FIGS. 3 and 4, a rising portion 12 is provided at the front end of a support rod 12 extending forward from the transmission case 11.
a, and at the upper end of this rising portion 12a, one of the weeding tools 4a, 4b on the left side of the machine body 4a is attached.
are connected by a stay 13 extending from the top thereof, and the sensor 10 is connected to the sensor 10 so that the grain culm is not caught thereon, and the support rod 12 is connected to the sensor 1 by a stay 13 extending from the top thereof.
The blade is fixed to the stay 13 while being placed between the weeding tool 4a and the rising portion 12a so as not to interfere with the transmission and reception of sound waves. and,
A bracket 14 attached to the lower end of the weeding tool 4a
From there, the grain culm guide 15 is extended rearward while bypassing the ultrasonic path R of the sensor 10, and its extended end is positioned below the weeding tool support rod 12, as shown in FIG. Even if grain culms or weeds are located behind the weeding tool 4a with one of the stock base side and the ear side located outside the body of the support rod 12, and the other side located inside the body of the support rod 12, Even if the support rod 12 enters the rising portion 1 of the support rod 12, the guide tool 15
It is slidably guided downward on the proximal end side connected to 2a so as not to be caught by the rising portion 12a. Furthermore, the extending end of the guide tool 15 is formed into a curved shape with the tip pointing inward to the aircraft body, so that when the aircraft moves backward, grain culms and weeds are pushed out laterally and outwardly by the curved part and caught on the guide tool 15. We are trying to prevent this from happening.

When the guide tool 15 is provided, as shown in the above embodiment, if it is extended in a state where it is supported in a cantilever manner by the weeding tool 4a and the extended end side is not connected to the support rod 12, the grain culm Short leaves and grass serve as guides 15 and support rods 1
2, it is advantageous that it can be prevented from being caught between the guide tool 15 and the support rod 12 by coming out from between them. support rod 1
It may be extended from 2. Furthermore, as shown in FIG. 6, the extending end side is arranged so as to pass slightly in front of the support rod 12 to form a gap between the guide tool 15 and the support rod 12 through which leaves of the grain culm, etc. can escape. By doing so, it is possible to prevent pinching between the guide tool 15 and the support rod 12.

The present invention can also be applied to a harvester that harvests various stems and culms other than rice and wheat.

[Brief explanation of the drawing]

The drawings show an embodiment of the reaping harvester according to the present invention, in which Fig. 1 is a side view of the front part of the combine, Fig. 2 is a schematic plan view of the pre-reaping processing section, and Fig. 3 is a side view of the sensor mounting section. FIG. 4 is a plan view of the guide tool, FIG. 5 is a front view showing the operating state of the guide tool, and FIG. 6 is a plan view showing another implementation structure of the guide tool. FIG. 7 is a side view of the conventional structure. 4a... Weeding tool, 7... Reaping device, 10... Sensor, 12... Support rod, 12a... Rising part,
15... Guide tool, R... Ultrasonic path.

Claims (1)

[Claims for Utility Model Registration] The weeding tool 4a is connected to the upper end of the rising portion 12a formed at the front end of the support rod 12, and the ultrasonic sensor 10 for detecting the height above the ground of the reaping device 7
is a reaping/harvesting machine disposed between the weeding tool 4a and the rising portion 12a, wherein the weeding tool 4
A guide tool 15 for sliding the stem culm that has entered the rear part b downward on the proximal end side connected to the rising part 12a of the support rod 12 is provided so as to bypass the ultrasonic path R of the sensor 10. A reaping harvester featuring: The reaping/harvesting machine according to claim 1, wherein the guide tool 15 extends from the weed cutting tool 4a in a cantilevered manner.