JPS6038085B2 - combine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a method for transporting reaped stalks in an upright position by using a tip locking and conveying device.
The present invention relates to a combine harvester configured to be transported toward a shelling device while being supported by a stock clamping and transporting device.

In recent years, in combine harvesters, research and development has been carried out on so-called handling depth control, which operates a handling depth adjustment device to maintain the handling depth within a certain range based on the results of the gutter length detection by the gutter length detection device. And, in configuring the Azusa length detection device,
Although a means of detecting the position of the tip of the stalk is adopted,
It was difficult to obtain accurate detection values because the tips of stems and panicles tend to move unexpectedly.

The present invention aims to prevent unexpected movement of the tip of the stalk and to obtain an accurate value of the glen length detection,
In the combine harvester having the above-mentioned structure, the conveyance speed of the stock head holding conveyance device is set higher than the conveyance speed of the ear tip locking conveyance device, and at the starting end of both conveyance speeds, the ear tip side is set higher than the stock head side. The stem length detection device is arranged to detect the position of the stem tip side in the dense state, and the desired mechanism is operated based on the detection result. Features.

In other words, the tips of the stalks, which are in a dense state, are less likely to move unexpectedly due to mutual support, and are properly maintained in an extended posture, thereby making it possible to obtain accurate shaft length detection values. It has become possible to accurately operate a desired mechanism based on this detection result. Moreover, the present invention
The desired purpose can be achieved by simple improvement of the existing ear tip locking and conveying device and stock head clamping and conveying device without installing a special device to regulate the posture of the stalk tip, and has practical effects. It's large.

The embodiments of the present invention will be described in detail with reference to the illustrative drawings.

FIG. 1 shows a combine harvester in which a reaping section is connected to the front part of the machine in which a shelling device 2 is mounted on a crawler traveling device 1.

To explain the reaping section, three lifting devices 3 installed diagonally at the front section pull up the three stalks standing upright, and the reaping device 4 pulls up the stalks at the base of the stock. While reaping the ends, the reaped stems of Azusa are raked rearward and delivered to the cross-feeding section of the ear-end locking and conveying device 5 and the plant head locking and conveying device 6, where they are conveyed laterally to one side and merged.

Then, the tip side of the merged stem is continuously held and conveyed by the rear conveyance section of the ear tip locking and conveying device 5, and the root side is held and conveyed sequentially by the first pinching and conveying device 7 and the second pinching and conveying device 8. The structure is such that, after being conveyed rearward while changing the shape to a fallen position at the end of conveyance, the stock end side is delivered to the feed chain 9 of the shelling device 2. Further, as mentioned above, the first clamping and conveying device 7 installed in the reaped stalk conveying path is configured such that its starting end side is swingable up and down with the starting end side serving as a fulcrum, and as shown in FIG. , are interlocked and connected to the hydraulic cylinder 10 via a link mechanism.

Then, as the position of the terminal end side is changed and adjusted by the expansion and contraction operation of the cylinder 10, the handling depth is adjusted by changing the position of handing over the stalks to the second pincher conveying device 8 in the direction of the catalpa length. The device is configured. Further, the conveyance speed of the first pinching and conveying device 7 is set higher than the conveying speed of the ear tip locking and conveying device 5, so that the rear conveying section of the ear tip locking and conveying device 5 and the starting end of the first pinching and conveying device 7 The structure is such that the tip side of the plant is transported in a denser state than the root side. Further, this combine harvester is configured to automatically adjust the striping depth within a certain range (as described below).

That is, a device 11 is provided which detects the position where the tips of the stems of Azusa that are conveyed by the second clamping conveyance device 8 and the tip locking conveyance device 5 passes, thereby detecting the handling depth.

As shown in FIG. 3, this handling depth detection device 11 urges two rocking sensors 14a and 14b juxtaposed along the stem diameter direction to protrude from a case 13 attached to the stem azalea guide cover 12. At the same time, as the sensor bulbs 14a and 14b swing backward due to their contact with the stalk, the normally closed type switch S and the normally closed type switch S2 in the case 13 are operated. Both the switches S,, S2
The solenoid portion of the electromagnetic three-position switching valve 15 for controlling the expansion and contraction of the hydraulic cylinder 10 is connected as shown in FIG. 5, and the handling depth is automatically controlled as described below.

In other words, when the deep handling state in which the stem tip hits both sensors 14a and 14b is detected, the switch S is closed and controlled to the shallow handling side. When a shallow handling state in which the stem does not come into contact with both sensors 14a, 14b is detected, switch S2 is closed and controlled to the deep handling side, thereby placing the stem tip into the sensors 14a, 14b. The handling depth is automatically controlled to maintain the depth.

Note that S3 in the figure is a manually operated start switch. In addition, in general, the tip of the stalk is in the direction of the drooping part, and the longer it becomes a camphor tree, the more prone it becomes. Therefore, it is inserted into the shelling device 2 much deeper than the actual handling depth.

Therefore, in order to prevent this, the following configuration is adopted. That is, as described above, the hair length detection device 1 detects the position of the tip of the ear, which does not become dense and sag.
6 is equipped.

As shown in FIG. 4, this gimlet length detection device 16 has a swing sensor 18 which is pivoted to a case 17 connected to the upper part of the lifting device 3 so as to be freely spread around the shaft center, and is held in a hanging position by its own weight. When the sensor 18 is energized and the sensor 18 is oscillated backward by the bale contact with the stalk, the rocking displacement layer is used to detect the length of the gimlet, and the sensor 18 is
The sensor 18 is configured to close and open the normally open switch T and the normally closed switch T2 when the switch is swung backwards significantly. Note that the setting level is
This setting is made in accordance with the length of the gimlet that has dust that causes the handling depth detection device 11 to detect a large amount of dirt. the switch T;
are connected in series with the switch S2, as shown in FIG. 5, and the switch L is connected to the switch S,
are connected in parallel.

Therefore, when the gutter length detection device 16 detects the gutter length equal to or higher than the set level, the switch T is opened to prevent automatic control on the depth handling side, and the switch L is closed to increase the depth of handling. The adjusting device is forcibly adjusted to the shallow handling limit position to prevent at least an extremely deep handling condition from occurring. In carrying out the present invention, the detection device 16 may be linked with other desired mechanisms such as automatic depth control based on the detection results of the girth length detection device 16.

[Brief explanation of the drawing]

The drawings illustrate embodiments of the combine harvester according to the invention,
Fig. 1 is a side view, Fig. 2 is a schematic perspective view of the processing depth adjustment device, Fig. 3 is a rear view of the processing depth and gimlet length detection device, Fig. 4 is a side view of the gimlet length detection device, and Fig. 5 is a side view of the gimlet length detection device. The figure is an operating circuit diagram. 2... Shelling device, 5... Spike tip locking and conveying device, 7... Stock head clamping and conveying device, 16...
...Stem length detection device. Figure 1 Figure 2 Figure 3 Figure 4 Figure 5

Claims (1)

[Claims] 1. With the harvested stem culm in an upright position being supported by the ear tip locking and conveying device 5 and the plant head clamping and conveying device 7, the dehulling device 2
In a combine harvester configured to transport
The conveyance speed of the stock head clamping conveyance device 7 is set higher than the conveyance speed of the ear tip locking conveyance device 5, so that at the starting ends of both conveyance devices 5 and 7, the ear tip side is denser than the stock head side. A combine harvester characterized in that it is configured to have a culm length detecting device 16 for detecting the position of the tip of the stalk in the dense state, and is configured to operate a desired mechanism based on the detection result. .