JPS6115712Y2 - - Google Patents

Description

[Detailed description of the invention] This invention relates to a cutter that shreds waste straw from a combine harvester.The discharge guide installed at the shredded straw discharge port can be opened and closed in response to changing the running speed of the combine harvester. make it possible,
To provide a straw cutter for a combine harvester, which allows continuous work to be carried out without causing clogging in the cutter at any working speed.

Hereinafter, the present invention will be explained in detail based on specific examples shown in the drawings.

The combine harvester according to the embodiment is equipped with a reaping conveyance section in front of a chassis 2 supported by a crawler-type traveling section 1, a driving operation section is arranged behind the side of the reaping conveyance section, and a rear chassis of the reaping conveyance section. It has a conventionally known arrangement in which the threshing section 3 is mounted on the top, and the paddy extracting section of the threshing section, the engine, etc. are installed on the side of the threshing section 3. is equipped with a straw cutter A, and a focusing device B is attached to the rear side.
are arranged side by side. A straw conveying mechanism 5 is installed above the straw cutter A and the concentrator B to take over and convey the group of straw that is conveyed by the feed chain mechanism 4 of the threshing section 3 while being held at the base of the straw. This waste straw conveying mechanism 5 is configured to be able to transport waste straw from a position at the end of the feed chain mechanism 4 where waste straw can be transferred to above the receiving port 6 of the waste straw cutter A or further to the collecting device B at the rear. By changing the posture of the guide body 7, the group of removed straw is supplied to the removed straw cutter A or to the convergence device B.

The straw cutter A has a pair of rotating shafts 9 and 10 supported in a case 8 with the above-mentioned receiving port 6 opened upward, and a large number of disc blades 11 on the rotating shaft 9 side.
..., and the disk blade 11 on the rotating shaft 10 side.
The raking rotors 12 corresponding to the... are installed in parallel at required intervals in the axial direction, and the waste straw C supplied from the receiving port 6 in parallel to the rotating shafts 9, 10 is collected from the stock. It is configured to shred simultaneously across the tip.

Further, a discharge port 13 for discharging shredded waste straw is opened at the bottom of the case 8, and the discharge port 13
Rotating pivot parts 14, 14' are provided on the left and right end walls in the width direction.
The shredded straw discharge guides 15, 15' are swingably attached by the screws.

Each discharge guide 15, 15' has an actuating rod 1
6 and 16' are respectively connected to the connecting portion of the actuating body 17, and the actuating body 17 is operated around the rotation fulcrum shaft 18, for example, as shown in FIGS. 2 and 3, between the tip parts. Let the dimensions of the opening formed by L, L ₁ ,
It is made so that the opening can be adjusted as shown in L ₂ .

The inner wire end of the push-pull operating cable 19 is connected to the operating cable connecting portion of the operating body 17, and the other end of the wire is connected to the traveling speed change switching mechanism D of the combine harvester body, and the switching mechanism D
When the operating lever 20 is operated in the high speed direction, the opening degree of the tips of the discharge guides 15, 15' is increased, and when the operating lever 20 is operated in the low speed direction, the discharge guide 1 is increased.
5, 15' are connected so that the opening degree at the tips is small.

Furthermore, the converging device B installed at the rear side of the straw cutter A is constructed as shown in FIGS. 4 and 5, for example.

That is, on the rear wall of the case 8 of the cutter A, on the already-cut side, there is provided a regulation plate 21 in an upright state for regulating the fall of the waste straw C, and a condensing plate 21 with the free end close to the lower end of the regulation plate 21 is installed in an upright position. The mounting tool 22 is configured to be able to swing in the direction of arrow A around a rotation fulcrum 23 located on the uncut side of the rear wall of the cutter. It is energized to take the receiving posture as shown by the solid line in the figure, and when a predetermined amount of waste straw is deposited on the focusing device 22, it swings as shown in the phantom line in FIG. The structure is such that the waste straw C is discharged as shown by arrow B.

In the figure, 24 is a push-pull wire for changing gears, 25 is a safety cover for the straw cutter, 26 is a pinching guide rod, 27 is an urging spring, and 28 is a stopper.

Therefore, when working with the combine harvester according to the present invention, if the waste straw C is to be shredded, the guide rod 7 and the pinching guide rod 26 of the waste straw conveying mechanism 5 should be configured as shown in Fig. 1. Because I do it,
When the speed change mechanism D is activated and the aircraft operating speed is set appropriately, the discharge guides 15, 15' of the straw cutter A are activated.
The opening degree is the opening degree that matches the set speed. Therefore, the waste straw group discharged from the threshing section 3 is input into the receiving port of the waste straw cutter A, is shredded, and when discharged from the discharge port 13, the opening degree is maintained to match the machine running speed. This allows the discharge guides 15, 15' to smoothly discharge to the trajectory of the aircraft without stagnation.

In addition, if the waste straw C is to be discharged without being shredded and buried, the guide body 7 and the pinching guide rod 26 of the waste straw conveyance mechanism 5 can be switched as shown in FIG. At this time, after a predetermined amount has been accumulated on the mounting device 22 in the receiving position, the weight is transferred to the mounting device 22.
The straw swings as shown in the imaginary line in Fig. 5, and the collected waste straw is discharged to the already cut field.

As explained above, the present invention is configured so that the opening degree of the discharge guides 15, 15' installed at the shredded straw discharge port 13 can be adjusted as appropriate in conjunction with the operation to change the traveling speed of the combine machine. Therefore, even if the combine working speed is changed quickly during operation and a large amount of straw is supplied to the straw cutter, the opening degree of the discharge guides 15 and 15' will be increased to accommodate this increase. Therefore, there is no clogging caused by shredded straw, and smooth discharge is always carried out, allowing efficient combine harvester operation.

[Brief explanation of the drawing]

The drawings show a specific example of the present invention, and FIG. 1 is a schematic side view of the main parts showing the structure of an example of the invention, and FIGS. 2 and 3 are schematic back views showing its operating state. FIGS. 4 and 5 are a schematic side view and a schematic back view of the main parts showing the structure and operation of the focusing device. A... Straw cutter, B... Focusing device, C...
... Discarded straw, 3... Threshing section, 5... Discarded straw transport mechanism, 13... Discharge port, 15, 15'... Discharge guide, D... Travel speed changeover mechanism.

Claims (1)

[Scope of utility model registration request] Discharge guide device 1 installed at shredded straw discharge port 13
5 and 15' are constructed so that the opening degree can be adjusted in conjunction with an operation for changing the traveling speed of the combine machine.