JPS58285B2 - reaping harvester - Google Patents

Description

[Detailed description of the invention] Generally, in a reaping harvester, when the machine reaches the end of one stroke and there are no planted stem culms left, the pre-reaping treatment section is brought into contact with the ground, stump, etc. for the next round. Moreover, when entering the stem culm group again after the rotation, the pre-harvesting processing section is lowered to the required cutting height position.

Recently, in order to save labor by promoting automation of the lifting and lowering operations of the aforementioned pre-harvesting processing section, a sensor installed at the front end of the pre-harvesting processing section detects the presence or absence of planted stem culms. A reaping harvester has been proposed in which a reaping pre-processing section is automatically controlled to rise to a set height, and is also automatically controlled to descend to a set height based on detection of the presence of a stem culm.

However, in the conventional case, the detection sensor was placed at a fixed position in the longitudinal direction of the aircraft, making it difficult to perform accurate elevation control.

In other words, when lowering the elevated pre-reaping treatment section, the sensor should be moved toward the front of the machine in order to lower it to the required cutting height before the pre-reaping treatment section enters the planted stem culm group. On the other hand, when raising the pre-reaping processing section, the sensor should be mounted on the machine in order to ensure that the pre-reaping processing section has reaped to the end of the planted stem culm and then raised. Although it is preferable to install it on the rear side, in the conventional case, the sensor was installed at a fixed position in the front and back direction, so the timing of raising the pre-reaping processing unit was too early, or
The lowering timing of the reaping pre-processing section may be delayed, making it difficult to perform a good reaping operation at the end or start of the -stroke.

The present invention has been made with the above-mentioned circumstances in mind, and
The present invention is characterized in that the sensor is configured to be displaced forward as the pre-reaping treatment section rises and to be moved backward as the pre-reaping treatment section descends.

That is, by displacing the sensor forward when the pre-reaping treatment section is raised, the presence of stem culms can be detected early, so before the pre-reaping treatment section enters the group of stem culms, The cutting height can be lowered accurately to the required cutting height position, and by displacing the sensor backwards when the cutting pre-processing section is lowered for reaping, the cutting pre-processing section can be lowered to the end of the stem culm. Since it is possible to detect the absence of stem culms after reaping, it is now possible to reliably cut to the desired height up to the end of the stem culm group, thereby solving the problem mentioned above. This made it possible to perform good reaping and harvesting work.

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

The figure shows a device 3 for pulling up multiple rows of planted stem culms into an upright position, and a device 3 for pulling up multiple rows of planted stem culms into an upright position. A reaping device 4 that cuts the base end of the stock, an auxiliary conveyance device 5 that conveys the harvested stem culms laterally and merges them, and a vertical conveyance of the merged stem culms toward the feed chain 6 of the rear threshing device 2. This figure shows a combine harvester that is connected and equipped with a pre-reaping processing section 8 that includes a device 7 and the like.

Next, a mechanism for automatically controlling the elevation of the reaping pre-processing section 8 based on the result of detecting the presence or absence of planted stems and culms will be explained.

That is, the machine is provided with an elevating frame 9 that can freely swing up and down about a fulcrum P, and this frame 9 supports the reaping pre-processing section 8, and the frame 9 and the machine are connected to each other. A hydraulic cylinder 10 is interposed between the
The reaping pre-processing section 8 is configured to be driven up and down by the expansion and contraction operation of the cylinder 10.

A sensor 11 for detecting the presence or absence of planted stem culms is provided on the lateral side of the reaping pre-processing section 8, in a portion that is close to uncut stem culms when the machine rotates.

This sensor 11 is connected to a support frame 1 extending from the main machine.
The sensor box 13 is supported by the sensor box 13 supported by the sensor box 2 so as to be able to swing back and forth, and is elastically biased to a position protruding in the lateral direction of the body, and detects the absence of a stem culm in the protruding position. It is configured to detect the presence of a stem culm by its backward swinging motion.

The box 13 is equipped with a switch mechanism (not shown) that electrically detects whether the sensor 11 is in the protruding position or in the backward swinging position.

When the machine reaches the end of one stroke and the absence of a stem culm is detected, the hydraulic cylinder 10 is extended based on a signal from the switch mechanism, and the reaping pretreatment section 8 is moved to an appropriate height set in advance. When the rotary extraction machine is about to enter the group of stem culms again and the presence of the stem culms is detected, the hydraulic cylinder 10 is operated to retract based on the signal from the switch mechanism. , the reaping pre-processing section 8 is configured to be automatically lowered to a preset reaping height position.

Further, the sensor 11 is configured to be displaced back and forth in conjunction with the elevation and descent of the preprocessing section 8.

That is, the support frame 12 is attached to the first
It is composed of a support frame 12a and a second support frame 12b that is fitted into the first support frame 12a so as to be freely retractable in the front-rear direction and is elastically biased toward the projecting side.

The second support frame 12b is interlocked and connected via a release wire 15 to an arm 14 erected from the pivot base of the lift frame 9, and as the lift frame 9 (reaping pre-processing section 8) descends. , is configured to be forcibly displaced rearward against the biasing force.

Then, the second support frame 12b is
The sensor 11 supported by the second support frame 12b is configured to be moved forward and backward by a biasing force when the sensor 11 is raised, and displaced backward against the biasing force when the sensor 11 is lowered. .

In the embodiment, the presence or absence of an adjacent uncut, planted, standing stem culm is detected, but the present invention may be implemented in a form in which the presence or absence of a planted stem culm immediately in front of the body is detected.

[Brief explanation of drawings]

The drawings illustrate embodiments of the reaping harvester according to the invention,
FIG. 1 is a side view of the front part of the combine, and FIG. 2 is a schematic plan view thereof. 8... Reaping pre-processing section, 11... Sensor for detecting the presence or absence of planted stems and culms.

Claims (1)

[Claims] 1 Based on the detection of the presence or absence of a stem culm by the planted stem culm presence/absence detection sensor 11 provided at the front end of the reaping preprocessing unit 8
In the reaping/harvesting machine configured to automatically control the rise to a set height and automatically control the lowering to the set height based on the detection of the presence of a stem culm, the sensor 11 is activated as the pre-reaping processing unit 8 rises. A reaping harvester characterized in that it is configured to be displaced forward and moved backward as it descends.