JPS6296004A - Automatic steering apparatus of combine - 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 (Field of Industrial Application) The present invention relates to an automatic steering device that automatically changes the course of a combine harvester along a row in which culms are planted.

(Prior Art) A conventional example of this type of automatic steering device will be described with reference to FIG. 1, which is an embodiment of the present invention.

Numbers 1 to 5 are five cutting rods that are placed in parallel with the reaping part of the combine harvester.The tips of the rods are inserted between the planting rows of the husk culms of rice or wheat, and the roots of the plants are divided while dividing the husk culms from side to side. Reap with clipper blade 6.

7.8 is a guide rod that protrudes in a chevron shape between the weeding rods, and is attached to the weeding rods 2 and 4, and guides the culm entering between the weeding rods to the rear raking body (not shown). .

9 to 12 are triggering bodies that raise the culm.

Then, attach the Ml culm sensor S1 with a built-in microswitch to the dividing rod 1 near the mowed field near the driver's seat 13.
The contact that activates the switch is placed near the top of the guide rod 7 that extends in a chevron shape, and the sensor S1 and Install a similar m2 culm sensor S2,
Push the contact into the culm entrance path between the dividing rods.

S3 is a third culm sensor for detecting whether or not there is a culm in the cutting section, and sensor S1. It has the same structure as S2, and its contacts face the rear side of the guide rod 8.

14.15 is a pair of left and right crawlers that propel the combine harvester, and if the culm touches the contacts of sensors S1 and S3 and the internal microswitch is turned on, and only sensor S2 does not touch the culm and is off, Crawlers 14 and 15 drive at the same speed and the combine moves straight.

On the other hand, if sensors Sl and S2 are off and only sensor S3 is on, the drive of the left crawler is stopped, the aircraft turns to the left, and sensors S1. When S2 and S3 are all on, the drive of the right crawler is stopped and the aircraft turns to the right.

By automatically changing the course in this way, the machine follows the planting row of the shell culm and harvests without stepping on the shell culm.

(Problems to be Solved by the Invention) In such a conventional automatic steering device, there are cases where the machine is moved forward in a direction perpendicular to the planting row to reap, which is called horizontal cutting, and
When the aircraft first enters the center of the field, which is called splitting, the sensors do not work correctly, causing the aircraft to change course and become unstable.

The present invention solves this serious drawback of the conventional art by making it possible to change the mounting position of sensor S1 and adjusting the operating range of sensors S1 and S2 in which the aircraft moves straight as necessary. , the purpose of which is to stabilize the aircraft's course.

(Means for solving the problem) Therefore, in the present invention, the first
The mounting position of the culm sensor S1 can be changed, and the distance between its contact and the guide rod 7 can be adjusted.

(Function) When the sensor S1 is brought closer to the guide rod 7 and the gap is narrowed, the range in which sensor S1 is on and sensor S2 is off, that is, the operating range of the sensor when traveling straight, is expanded, so the aircraft will not change course unnecessarily, and the opposite will occur. If sensor Sl is moved away from guide rod 7 to widen the gap between it and the guide rod, the range in which sensor S1 is on and sensor S2 is on becomes narrower, allowing the aircraft to more closely follow the culm line. .

(Example) Next, an example of the present invention will be described. However, explanations that overlap with the conventional example will be omitted.

Reference numeral 21 denotes a support rod for the first culm sensor S1 provided in a direction perpendicular to the weeding rod 1. The sensor S1 is connected to the inner end of the support rod, and the outer end thereof is connected to a gear box 22 provided on the weeding rod I. A pinion (not shown) in the gear box 22 is inserted into the groove 21a formed on one side of the support rod 21, and the support rod 21 is moved forward and backward in the left-right direction by a motor M for changing the sensor position that can be rotated forward and backward. The distance between the contact Sla provided in the sensor S1 and the guide rod 7 is freely changed from near to near.

Then, a polyurethane v1 for detecting the position of the sensor S1 is provided in the gear box 22, and a polyurethane V2 for position setting of the sensor S1 attached to the driver's seat 13 and the polyurethane v1 are connected to the controller 23. The motor M is rotated so that the output voltage of V2 is compared and the sensor S1 is at the set position. Therefore, in this example.

While sitting in the driver's seat, change the position of sensor SL,
The operating range of the sensor in which the aircraft moves straight can be adjusted.

Furthermore, the sensors S1, S2, and S3 are connected to the controller 23.
The left and right crawlers 14 are connected to the input side of the
．． 15 ``W!'' to connect the magnetic solenoid 24.

As explained in the conventional example, these sensors S1,
Solenoid 24 depending on the on/off combination of S2 and S3
Alternatively, by energizing 25 to drive or stop the crawler 14.15, the course of the combine is changed and the machine is aligned with the culm.

By the way, in addition to the above-mentioned motor M for changing the sensor position, a combine harvester incorporates a large number of electrical loads 21 to Zn, and each load has safety fuses F1 to Fn for overcurrent prevention.
is attached. Therefore, as shown in FIG.
If you connect an alarm such as a lamp L to the output side of the circuit, if any one of the fuses is disconnected, the output of the NAND circuit 30 will become high level and the lamp L will light up, so you can immediately detect abnormalities in the circuit. It is extremely convenient to detect.

(Effects of the Invention) In short, according to the present invention, the mounting position of the first culm sensor S1 mounted near the guide rod 7 can be changed, and the distance between the contact Sla and the guide rod 7 can be freely adjusted. Therefore, the operating range of the sensor in which the machine moves in a straight line can be adjusted to wide or narrow ranges, resulting in the effect that the course of the machine is stabilized even when using a special reaping method.

[Brief explanation of drawings]

Fig. 1 is a plan view showing an outline of a combine harvester embodying the present invention, Fig. 2 is an enlarged plan view of its main parts, Fig. 3 is its circuit diagram, and Fig. 4 is a circuit diagram for detecting fuse breakage. . Sl, S2 and S3 are first, second and third culm sensors, respectively, 1 to 5 are dividing rods, 9 to 12 are triggering bodies,
7 and 8 are guide rods, 14 and 15 are claws Fig. 3

Claims (1)

[Claims] A first shell culm sensor is installed at a position close to a guide rod protruding between parallel branching rods, and a second shell culm sensor is installed at a position farther from the guide rod, and these sensors are provided. By touching the contactor with the culm that enters between the dividing rods and detecting its presence or absence, it is possible to determine whether the culm entry position is uneven and automatically maneuver the aircraft to follow the planting row of the culm. An automatic steering device for a combine harvester, characterized in that the mounting position of the first shell culm sensor can be changed, and the distance between the contactor and the guide rod can be adjusted.