JPS6031465Y2 - Automatic sorting device in combine harvester - Google Patents

Description

[Detailed explanation of the idea] The present invention relates to an automatic sorting device in a combine harvester.

When the combine harvester reaches the edge of the field and turns around during work, or when it stops traveling and interrupts work, the chaff sieve in the threshing section is The flow rate of grain flowing down is significantly reduced.

However, even in this case, the chaff sieve performs the oscillating sorting function in the same way as during normal operation, so that the culm breaks and the normal grains leak between the horizontal bars of the chaff sieve.
This results in poor sorting.

Therefore, the present invention closes each horizontal bar of the chaff sheave to prevent poor sorting when the culm is not being harvested, such as when the aircraft turns or stops, and also closes each horizontal bar of the chaff sheave to prevent poor sorting, and also opens each horizontal bar during work. This is an attempt to solve the above-mentioned drawbacks of the conventional method by performing a normal sorting operation.

An embodiment of the present invention will be described below based on the drawings.

Figure 1 shows a combine harvester, and 1 is a reaping section installed at the front of the machine, which vertically transports the cutting body 2a, the pulling device 2, the cutting blade (not shown), and the stock side of the cut culm, and threshes the harvested grain. It is equipped with a vertical conveyance device 3, etc., which transfers the feed chain to the front end of the feed chain.

As shown in FIG. 2, the vertical conveyance device 3 is provided with a limit switch LSI on the path a side along which the shell culm is vertically conveyed, for detecting passage of the shell culm.

Further, in FIG. 1, 4 is a threshing section, which includes a feed chain 5, a handling drum 6 suspended horizontally on the handling room machine frame, a receiving net 7 stretched under the handling drum 6, and the receiving net 7. It is provided with a chaff sieve 8, etc., which is provided below the receiving net 7 and acts to shake and sort out the leakage material leaking from the receiving net 7.

Reference numeral 9 denotes an operation section provided on the front side of the aircraft body, and a driver's seat 10 is provided behind it.

In the figure, 11 is a running roller, 13 is a winnow, and 14 is the first opening.

The chaff sheave 8 has a front half portion 8a as shown in FIG.
is formed in a sawtooth shape, whereas in the second half portion 8b, plate-shaped horizontal bars 8c are arranged in parallel at appropriate intervals in an inclined posture.

Each of the horizontal bars 8c... is rotatably provided with respect to the left and right side plates 8d, 8d, and is extended to a plate piece 16... provided on the adjustment rod 15 as shown in FIG. The lower end portion is pivotally supported through a hole or the like, and is configured to be rotated by sliding the adjustment rod 15 in the front and rear directions.

In this case, if each horizontal bar 8C... turns to a horizontal position, the gap between each horizontal bar 8C... will almost disappear, resulting in a closed state, and conversely, if it assumes a substantially vertical position, it will be in an open state. .

Although the adjustment rod 15 is not shown in FIG. 2, it is usually provided at the lower part near the left and right side plates 8d, 8d, and is attached to the horizontal bar 8C.
This is done so as not to interfere with the grains flowing down when the ... is opened.

A worm 17 is provided at one end of the adjustment rod 15, and is meshed with a worm gear 1B attached to the shaft of the DC motor M. By rotating the DC motor M forward and backward, the adjustment rod 15 can be moved forward and backward. Sliding, horizontal bar 8C...
It is configured so that opening and closing can be controlled.

Furthermore, two limit switches LS2. Ls3 is provided,
One limit switch ts2 detects the open state of the horizontal beams 8c, and the other limit switch LS3 detects the closed state.

That is, one limit switch LS2 constitutes a detector for detecting the limit position of the horizontal bar 8C in the opening direction, and the other limit switch LS3 constitutes a limit position detector in the closing direction. The limit switch ts1 constitutes a detector for the culm passing through the vertical conveyance device 3.

and a limit switch L which is the limit position detector.
S2. Each of the LS3 is provided with a changeable limit detection position, so that the rotation range of the horizontal bar 8C can be changed.

That is, for example, in the case of a closed state, all the horizontal bars 8C...
You can set the degree of the closed state, from a completely closed state in a horizontal position to a closed state in an inclined position with some gap between each horizontal bar 8C, or if it is in an open state, completely closed state. The degree of opening of the horizontal bars 8C can be set from a fully open state in which the horizontal bars 8C are in a substantially vertical position to a slightly inclined open state.

This limit switch LS2. I, s3, DC motor M
1 and a limit switch LSI for detecting passage of the culm are connected as shown in the electrical circuit of FIG.

In the figure, E is a battery, Ry is a relay, Rya is a normally open contact of the relay Ry, and Ryb is a normally closed contact.

In this configuration, if the limit detection positions are set so that the limit switch ts2 detects the fully open state and the limit switch LS3 detects the completely closed state, the culm will detect the vertical conveyance device 3. When the limit switch LSI detects this, LSl is turned on, relay Ry is energized, normally open contact Rya is closed, and normally closed contact Ryb is opened.

Therefore, current flows through the DC motor M in the direction indicated by the arrow I, and the motor starts rotating in the normal direction.

The horizontal beams 8c are opened via the adjustment rod 15 by normal rotation of the DC motor M, but when they reach an appropriate open state,
The protrusion 19 contacts the limit switch LS2, and Ls2
In order to turn off the motor M, the motor M is stopped and the horizontal bars 8C... are maintained in an open state.

Therefore, when the husk passes through the vertical conveyance device and a normal amount of grain is flowing down into the chaff sieve 8, the horizontal bars 8c are opened to perform the necessary oscillating sorting action.

On the other hand, when the culm stops passing through the vertical conveyance device 3, the limit switch LSI detects this and turns off.

Then, relay Ry becomes de-energized, so normally open contact Rya
opens, the normally closed contact Ryb closes, and current flows through the DC motor M in the direction shown by the arrow ■ (opposite direction to the arrow I).
The motor M starts reversing.

When the motor M rotates in the reverse direction, the horizontal bars 8c, which had been in the open state until then, are rotated in the horizontal direction and become in the closed state.

When switching to this closed state, the limit switch LS3 comes into contact with the protrusion 19, so it is turned off, the motor M stops, and the horizontal bars 8C... are maintained in the closed state.

Therefore, when the culm is not being harvested, such as when the machine is turned or when work is interrupted, the horizontal bars 8C are closed to prevent culm fragments from passing between the horizontal bars 8c.

The switching of the horizontal bars 8c to fully open can be said to be suitable for sorting when the field conditions and the growth state of the shell culm are favorable and the yield of shell culm per unit area is large.

In other words, when the amount of sorting throughput is small, if the horizontal bars 8c are fully opened, culm breaks tend to leak between the horizontal bars 8, and in this case, when the horizontal bars 8c are fully open. It is inappropriate for the switch to switch to LS2, and if this happens, it is best to change the limit detection position of limit switch LS2 and set it to an open state that slightly reduces the gap between the horizontal bars. It is.

On the other hand, it can be said that the completely closed state of the horizontal bar 8c is suitable for sorting when the yield of culms per unit area is small.

In other words, if the horizontal bar 8c is completely closed when the harvest amount is large, many grains including the first grain will be processed as the second grain, and in such a case, the limit of the limit switch LS3 All you have to do is change the detection position to create a slight gap between the horizontal bars, and set it so that it is in a closed state that allows a certain amount of grain to leak out.

As explained above, the automatic sorting device for a combine harvester of the present invention has the horizontal crosspiece of the chaff sheave rotatable across the open position by a motor, and a detector that electrically detects the culm passing through the vertical conveyance device. and configured to reversibly rotate the horizontal bar in the opening direction based on the detection of grain culm passage by the detector, and detect the limit of the rotation range of the horizontal bar and stop the motor. The present invention is characterized in that a limit position detector is provided and the limit detection position of the limit position detector is configured to be changeable.

Therefore, considering the amount of threshing to be processed, if there is a large amount of threshing,
The horizontal bar can be switched between a fully open state and a closed state with a slight gap, and when the amount of threshing is small, the horizontal bar can be switched between an open state with a slightly smaller gap than fully open and a fully closed state. If the threshing amount is between the levels above, the opening/closing status of the horizontal bars can be set as desired, such as by switching the opening/closing status of the horizontal bar to the intermediate status above. A stable sorting effect can be expected in terms of performance.

Furthermore, the passage of the husk is detected by the vertical conveyance device, and the opening/closing of the horizontal crosspiece is controlled based on the detection result. Opening/closing control can be performed at the same time or earlier, so there is no response delay.
Therefore, the sorting performance does not deteriorate.

[Brief explanation of drawings]

The figures show one embodiment of the present invention, in which Fig. 1 is a partially cutaway overall side view of a combine harvester, Fig. 2 is a perspective view showing a vertical conveyance device,
FIG. 3 is a perspective view showing the chaff sheave, FIG. 4 is a diagram showing the main parts in detail, and FIG. 5 is an electric circuit diagram that controls the operation of the main parts. LSI... Passing shell culm detector, LS2. LS3・
...Limit position detector, M'-...Motor,
3...Vertical conveyance device, bottom...chaff sheave, 8c...horizontal crosspiece.

Claims (1)

[Scope of utility model registration request] A detector LS is provided in which horizontal bars 8c of the chaff sheave 8 are rotatably provided by a motor M from an open position to a closed position, and which electrically detects the culm passing through the vertical conveyance device 3.
I is provided so as to reversibly rotate the horizontal crosspiece 8c in the opening direction based on the detection of passage through the culm by the detector LSI, and also change the rotation range of the horizontal crosspiece 8c. a limit position detector LS2. which detects the limit of and stops the motor M; [S3 is provided, and the limit position detector LS2
．． An automatic sorting device for a combine harvester, characterized in that limit detection positions of I and S3 are configured to be changeable.