JPS621860Y2 - - Google Patents

Description

[Detailed description of the invention] The present invention provides a direction sensor on the side of the divider in combine harvesters, etc., detects the position of the machine relative to the stock row, and automatically directs the machine to follow the stock row. The present invention relates to an automatic direction control device.

Conventionally, direction sensor 1' of multi-row combine harvester
As shown in FIG. 1, the divider is provided inside the right-most divider 2a of the large number of dividers 2a, 2b, 2c, etc., and performs direction control while detecting the outermost row of plants 3a in the uncut area 3. Ta. but,
The spacing between dividers 2 and the spacing between planting rows are not necessarily consistent, and if the row spacing is too wide due to side-to-side vibration of the machine due to automatic direction control, the leftmost divider will remove the rows, and if the row spacing is narrow, the row spacing will be removed. The outer rows were also intermittently harvested, leaving irregular plants as shown in the row of plants 3a shown in Figure 1.
For this reason, the sensor 1' judges the cut plants 3a' in the row of plants 3a in the uncut section to be the already cut section 5, and controls the direction of the combine harvester as shown by dotted line A, resulting in uncut areas. It was hot. Also, a double-sided sensor has been proposed that protrudes from both sides of the divider 2 and is pivotally supported in a bell crank shape to detect the rows of plants on both sides of the divider 2. was determined to be an already mowed area, and good control could not be expected, and according to this, horizontal mowing work as shown in Fig. 6 could not be performed.

Therefore, the present invention provides a direction sensor on the second divider from the mowed area side.
It is an object of the present invention to provide an automatic direction control device that eliminates the above-mentioned drawbacks.

Hereinafter, the present invention will be described in detail based on embodiments shown in the drawings.

As shown in FIG. 2, the combine 10 has dividers 2a, 2b, 2c, and 2d at the front of the machine, and further includes a cutting blade and a grain culm conveying device 11. A grain culm detection sensor 12 is provided on the conveyance path of the conveyance device 11, and when the grain culm is conveyed to the conveyance device 11, a switch of the sensor 12 is activated, and an automatic direction control device is activated. In addition, in the figure, 13 is a conveyance chain, 15 is a feed chain, and 16 is a handling cylinder. Also, divider 2
The second divider 2b from the right side has a single cutting width on the right side in the traveling direction, and the direction sensor 1 is provided inside the divider 2b.

The direction sensor 1 has a sensor arm 17, as shown in FIGS. 3 and 4, and has a ground 1.
The limit switches 1a and 1b are operated by the rotation of the switch 7. That is, when the ground 17 rotates in range a, the left-turn switch 1a operates, when it rotates in range c, the right-turn switch 1b operates, and in range b, it is a straight-ahead zone in which both switches do not operate. Furthermore,
The switch 1a is connected to a left turn solenoid 20a of a solenoid valve 20 shown in FIG. 5 via a timer 18 for cutting short pitch rotations due to gaps between plants, and the switch 1b is connected to a right turn solenoid 20b. It is connected. In the figure, 21 is a direction control main switch, 12a is a switch operated by the sensor 12, 18a is a switch operated by the timer 18, and 22 is a battery. The solenoid valve 20 communicates directly with an oil tank 26 via a pump 25 driven by an engine 23, and also with hydraulic cylinders 27a, 27 for operating the left and right clutches.
b are connected to each other in a switchable manner. In addition,
In the figure, 28 is a relief valve, and 29 is a suction filter.

Since the present invention has the above-described configuration, when the combine harvester 10 is moved forward with the main switch 21 turned on, the harvested grain culm is transported by the transport device 11, and the grain culm detection sensor 12 turns on the switch 1.
2a is turned on. This activates the automatic direction control device. Even if a part of the outermost row of plants 3a in the uncut area 3 has been cut in the previous operation, the direction sensor 1 is installed on the second divider 2b, and When the sensor arm 17 comes into contact and its rotation turns the switches 1a and 1b on and off to switch the solenoid valve 20, and by operating the left and right clutches, the aircraft automatically moves in the direction along the second stock row 3b. controlled. Therefore, the automatic control is triggered by the partially cut stump 3a', and no uncut stumps are left.

In addition, in the horizontal mowing operation shown in FIG. 6, although the already cut sections 5 are uneven, even if the combine advances as shown by the dotted line B, there will be no uncut area on the right side.

As explained above, according to the present invention, since the direction sensor 1 is provided on the second divider 2b from the mowed section 5 side, the outermost plant row 3a of the uncut section
Even if the boundaries between the uncut section 3 and the cut section 5 are uneven due to part of the cutting being cut in the previous work or due to horizontal cutting work, etc., automatic direction control can be performed well, and there will be no uncut areas. Therefore, there is no need to perform troublesome manual harvesting work.

[Brief explanation of the drawing]

Fig. 1 is a diagram showing direction control by a conventional combine harvester, Fig. 2 is a plan view schematically showing a combine harvester to which the present invention is applied, Fig. 3 is a diagram showing a direction sensor, and Fig. 4 is its electric circuit. 5 is a hydraulic circuit diagram for directional control, and FIG. 6 is a diagram showing a state in which the machine is used for horizontal mowing work. 1... Direction sensor, 2... Divider, 2
a...Divider at outer end, 2b...Second divider, 3...Uncut area, 3a...Outermost plant row, 3b...Second plant row, 5...Already cut area,
10... Combine harvester.

Claims (1)

[Claims for Utility Model Registration] A three-row mower or more having four or more dividers corresponding to rows of plants, and a directional sensor protruding from one side of the divider portion to detect a predetermined row of plants. In the combine harvester, the direction sensor is installed in the second divider part from the cut area side, protruding from the uncut side of the divider part, and the direction sensor is installed in the second divider part from the outermost side of the uncut area,
An automatic direction control device characterized by detecting the second stock row.