JPS582203Y2 - Cutters and focusing devices in combine harvesters - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a cutter and focusing device in a combine harvester.

In other words, the straw can be cut with a cutter, and the straw can be collected and released into the field without being cut.In particular, the cutter itself can switch between cutting the waste straw and collecting it by passing the waste straw through the inside of the cutter. It can be constructed compactly so that the rear part of the fuselage does not become large, and it is provided with a simple structure.

Next, the embodiment shown in the drawings will be described.

FIG. 1 shows a side view of a combine harvester, in which a threshing device A is mounted on a platform 6 supported by a track-type traveling body 5, and a reaping and conveying device 1 is installed in front of the device. A straw evacuation check 71 extends from the terminal end of the foot chain 8 of A with the upper part of the rear cover a facing rearward, and the terminal end 1a of the straw evacuation check 71 extends rearward and upper from the rear end of the rear cover a. At the same time, a lower guide rod 9 corresponding to the straw removal check 71 is configured to extend to the upper rear end of the rear cover a.

A cutter B is attached to the rear part of the rear cover a below the terminal end 1a of the straw removal check 71, and both parallel rotating shafts 2 and 2' are installed inside the cutter B. , 2' have corresponding rotary blades 3, 3' as in the conventional type.
are fitted at regular intervals.

In addition, an appropriate number of star wheels 4, 4' having a diameter slightly larger than that of the rotary blades 3, 3' are fitted onto both rotating shafts 2, 2', respectively, at appropriate intervals, and both rotating shafts 2, 2' are connected to each other. It is constructed so that the direction of reversing can be operated, and a space of 10° 10' facing downward is formed outside both star wheels 4, 4' and both sides of the rotary blades 3, 3'. Configure.

Reference numeral C denotes a concentrator, which is installed directly below the cutter B. The concentrator C has a known structure, and has a large number of curved rods 11 arranged side by side at intervals, and their bases. is rotatably attached to the support device 12, and when the waste straw accumulates on it from the upwardly supported state and the load exceeds a certain level, it rotates and turns downward to collect the collected waste straw and drop it downward, It is configured so that when it is dropped, it can rotate upward again and become a straw receiving state.

Therefore, when cutting straw in combine harvester operation, both star wheels 4, 4' and circumferential rotary blades 3, 3' are interlocked with each other as shown by arrows A and A' in Fig. 2. When it is operated and rotated in the reverse state, the straw conveyed by the straw removal cheno 1 reaches the terminal end 1a side and falls into the cutter B, and the star wheel 4 rotates in the reverse direction as shown by arrows A and A'. , 4', the straw is cut by the circumferential rotary blade 3°3', and the cut straw, which has been cut into short pieces, falls downward and onto the field.

In that case, even if the concentrator C is held upward, as shown by the solid line in FIG. It can also be rotated.

If you want to concentrate and discharge the waste straw without cutting it, switch the rotating shafts 2 and 2' so that they rotate in the opposite directions of arrows A and A', respectively. The waste straw falling from part 1a into cutter B is sent to both sides by star wheels 4 and 4' rotating in the opposite directions of arrows A and A', respectively, and falls in spaces 10 and 10', respectively.
The straw is placed on the receiving rod 11 of the concentrator C as it is, and when a certain amount of straw is collected, the receiving rod 11 rotates downward as shown by the imaginary line in FIG. From there, it is released onto the field, and the receiver 11 rises again to repeat the next focused release.

In this way, the present invention has a large number of rotary blades 3 on parallel rotating shafts below the terminal end of the straw removal chino 1 at the rear of the threshing device A.
In a combine harvester in which a cutter B having a configuration in which two blades 3' are disposed opposite each other and a concentrator C is installed below the cutter, the parallel rotating shafts 2 and 2' of the cutter B are set at positions f & 2 with a constant distance between the axes. At the same time, the rotating shafts are configured so that the directions in which they rotate can be freely switched between forward and reverse directions.
A suitable number of star wheels 4, 4' having a diameter slightly larger than that of the rotary blades 3, 3' are attached to each rotating shaft, and a space of 10° facing downward is provided outside both star wheels 4, 4' on both sides. 10'
Since the cutter for cutting the waste straw and the concentrator for concentrating the waste straw without cutting it are installed vertically overlapping each other, the waste straw processing section has a compact structure. However, the cutting process and focusing process can be changed by simply changing the direction of rotation while holding both rotating shafts of the cutter in a predetermined position, so the transmission structure, shaft support structure, and operation structure are complicated. However, the overall structure is simple and easy to manufacture and handle.

In addition, the star foil 4 has a larger diameter than the rotary blades 3 and 3'.
, 4' are not installed only on one rotating shaft of the cutter, but are installed on both rotating shafts 2 and 2', and furthermore, both rotating shafts 2 and 2' rotate in reverse relative to the rotation during the cutting process when converging. In this way, the downwardly facing space 10.10'
are formed correspondingly on the outer sides of the star wheels of both rotating shafts, so even when the amount of straw thrown into the cutter B from the straw exhausting cheno 1 is extremely large, the large amount of straw can be removed by the above structure. Therefore, since the straw is separated and discharged simultaneously from the spaces 10 and 10' on both sides to the concentrator, smooth straw removal processing is achieved without the straw clogging and stagnation in the cutter. It was.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, with FIG. 1 being a side view of the combine harvester, and FIG. 2 being a sectional view of the main parts. A... Threshing device, 1... Straw removal cheno,
2, 2'... Rotating shaft, 3, 3'... Rotating blade, 4, 4'... Star foil, B...
・Cutter C...;...Concentrator.

Claims (1)

[Scope of utility model registration request] A cutter B having a configuration in which a large number of rotary blades 3, 3' are disposed opposite to each other on parallel rotating shafts is installed below the terminal end of the straw discharging check 71 at the rear of the threshing device A, and a concentrator C is installed below the cutter. In the combine harvester equipped with the cutter B, the parallel rotating shafts 2 and 2' of the cutter B are fixed in position and supported at a constant distance between the shafts, and the directions in which the respective rotating shafts rotate mutually can be switched between forward and reverse directions. A star wheel 4°4 whose diameter is slightly larger than that of the rotating blades 3 and 3' is attached to each rotating shaft.
A cutter and a focusing device for a combine harvester, in which an appropriate number of star wheels 4, 4' are provided with downwardly directed spaces 10 and 10' formed outside both sides of the star wheels 4 and 4', respectively.