JPS6337764Y2 - - Google Patents

Description

[Detailed explanation of the invention] The running direction sensing device in a combine controls the direction by sensing the position of the grain culm with the sensor bar of the direction sensor, so in the case of a solid culm such as an upright grain culm, the traveling direction sensing device controls the direction. The sensing position of the server may be high. However, if a fallen grain culm is sensed at a high level, the planting row will be incorrectly detected, and the plant base is also weak, so it will be pushed and deformed by the spring pressure of the sensor bar, and the sensing position will move closer to the grain culm. It will be too late.

The present invention aims to provide a running direction sensing device for a combine that can accurately detect the planting position of grain culms for both upright grain culms and lodging grain culms. A combine harvester equipped with a direction sensing sensor that senses by rotating in the front and back direction, characterized in that the sensor bar of the direction sensing sensor is tilted so that the inner side is lower, and the length is adjustable in the direction of the slope. That is.

The embodiment shown in the drawings will be explained below.1
are a pair of right and left grain culm triggers provided at the front of a reaping device in a combine harvester, and grass cutting bodies 3 and 4 are attached to the front ends of reaping frames 2 and 2 on the outside of their lower parts, respectively.

A right sensing sensor 5 having a right sensor bar 6 with a long horizontal portion is installed on the back of the right weeding body 3 (as seen from the pilot's seat), and the inward slope of the left weeding body 4 moving through the uncut grain culm is installed. is larger than that of the right weeding body 3, and a left sensing sensor 7 with a larger inward tilt than the right sensing sensor 5 is attached to the back of the left weeding body 4. The sensor bar 8 is horizontal only at the grain culm contacting part at the tip, but the rest is mostly an inclined part perpendicular to the mounting axis 9 of the left sensing sensor 7.

The base of the left sensor bar 8 is folded back into a slender length so that it can fit into the parallel cut-out part 9a at the tip of the mounting shaft 9 and adjust its movement as shown in FIGS. 2 and 3. ,10
and bolts 11 to the mounting shaft 9.

Note that the right sensor bar 6 is also the same as the left sensor bar 8.
The length can be adjusted as well, so the length can be adjusted appropriately according to the planting width.

When harvesting an upright grain culm, set the left sensor bar 8 to the length shown by the chain line a in Figure 1, and adjust it to an appropriate position such as the position shown by the solid line depending on the degree of lodging of the grain culm. For soft grain culms that have fallen down considerably, pull it out to the position indicated by chain line b and attach it.

If you adjust the length like this, the left sensor bar 8
The contact portion 8a at the tip of the left sensor bar 8 is located at a higher position as the length of the left sensor bar 8 is shortened, and lowers as the length of the left sensor bar 8 is lengthened.

As described above, the present invention is a combine harvester equipped with a direction sensor that detects grain culm rows by rotating them in the front-back direction, and the sensor bar of the direction sensor is tilted so that the inner side is lower, and the sensor bar is tilted in the direction of the inclination. Since the length is adjustable, the sensor bar can be adjusted to the appropriate length and height when harvesting upright grain culms. By simply adjusting the length of the bar, the contact portion at the tip of the sensor bar can be made to act on the base of the grain culm without having to move the entire sensor up or down or adjust its sensitivity.

At this time, the length of the sensor bar makes it possible to detect grain culms more sensitively, and the sensitivity can be adjusted at the same time as the length adjustment, making it possible to reliably detect the planting position of grain culms that have fallen down. .

In addition, since the sensor bar contacts the grain culm and rotates backward, even a fallen and soft grain culm can be detected more reliably due to the longer sensor bar.

Furthermore, since the sensor bar is tilted, the direction sensing sensor can be installed at a higher position even if the tip is lowered, and it is possible to prevent weeds from getting entangled with the sensor bar and mud from accumulating on the sensor bar.

[Brief explanation of the drawing]

The drawings show one embodiment of the present invention,
FIG. 1 is a front view of the reaping section of the combine, FIG. 2 is a side view of the main parts, and FIG. 3 is an exploded perspective view of the attachment section of the sensor bar. 4...Left branching body, 5...Right sensing sensor, 7...
...Left sensing sensor, 8...Left sensor bar.

Claims (1)

[Scope of utility model registration request] In a combine harvester equipped with a direction-sensing sensor that detects grain culm rows by rotating them in the front-back direction, the sensor bar of the direction-sensing sensor is inclined so that the inner side is lower, and the length is adjustable in the direction of the inclination. A traveling direction sensing device for a combine harvester, characterized in that: