JPH1138A - Device for scattering cut discharged straws - Google Patents

Abstract

PROBLEM TO BE SOLVED: To eliminate a problem that places where cut straws are not released are generated on the straw-cut side of a field, because a discharged straw-cutting device has a smaller width than the whole width of a middle or large combine harvester and is disposed in a position deviated on the non-cut side in the middle or large combine harvester. SOLUTION: In the structure of a combine harvester where a discharge straw-cutting device is disposed in the rear portion of the combine harvester, the improvement comprises allowing the exhaust port of an engine to communicate with an exhaust gas pipe 22, rearwardly extending the exhaust pipe 22, connecting the rear end of the exhaust pipe 22 to a muffler 23, allowing the exhaust port of the muffler 23 to communicate with an extrusion pipe 25, and placing the extrusion port of the extrusion pipe 25 in the lower direction on the ear tip side of the discharged straw-cutting device.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for diffusing cut straw provided below a device for cutting straw disposed at the rear of a combine, and more particularly, to a device for diffusing cut straw for medium- and large-sized combine harvesters with five or more cuts. About.

[0002]

2. Description of the Related Art Conventionally, a straw cutting device has been attached to the rear of a combine to cut the thresh after threshing and discharge it onto a field. , So that the cut straw is stuck together in one place so that it is not released, and that the straw is not released to the uncut side,
A spiral was provided below the cutting blade. In other words, if they are released together in a streak at one location, the straw is hard to rot, and the floating straw is increased during rice planting and hinders planting. Variations occur in the harvest. In addition, if the waste is released to the uncut side, the waste may be clogged in the weeding plate or the transport device in the next cutting process, or the waste may accumulate on the cutting blade portion and the cutting performance may be reduced. Was.

[0003] Therefore, a spiral is arranged below the cutting blade (disk cutter) in parallel with the rotation axis of the cutting blade, and the cut straw is discharged while being transported from the uncut side to the already cut side, and is placed on the field. It was intended to be diffused and released.
For example, Japanese Utility Model Laid-Open No. 61-100951 and Japanese Utility Model No. 6-39
No. 562.

[0004]

[Problems to be solved by the invention]
The technique of No. 100951 merely conveys the cut straw to the cut side by a spiral, and has a poor diffusibility. In addition, the technology disclosed in Japanese Utility Model Publication No. 6-39562 is diffused and discharged within the width of the straw cutting device. However, for medium and large-sized combiners, the width of the straw cutting device is larger than the entire width of the airframe. Since it is short and biased toward the uncut side, there is a portion on the cut side where no cut straw is released. In view of the above, the present invention is configured such that the cut straw is released to the cut side by using exhaust gas from the engine, and the cut straw is spread over the entire width of the machine.

[0005]

The problems to be solved by the present invention are as described above. Next, means for solving the problems will be described. That is, in a configuration in which a straw cutting device is arranged at the rear of the combine, an exhaust pipe is connected to an exhaust port of the engine, the exhaust pipe is extended rearward, and a rear end of the exhaust pipe is connected to a muffler. A discharge pipe is communicated with a discharge port of the muffler, and the discharge port of the discharge pipe is positioned downward of the tip side of the straw cutting device.

[0006]

Next, embodiments of the present invention will be described. 1 is an overall side view of the combine, FIG. 2 is a side view of the straw cutting device, FIG. 3 is a plan view thereof, and FIG. 4 is a rear view thereof.

Referring to FIG. 1, the overall structure of a combine harvester with six rows will be described. The combine mounts the body frame 2 on the crawler-type traveling device 1, the mowing / raising device A is arranged at the front of the machine frame 2, and the transport device B is arranged at the rear of the machine frame 2. 3. Grain culm weeded by 3 is harvested and raised by the raising and raising device A, the root is cut by the cutting blade 4, and transported backward by the transport device B,
It is delivered to the feed chain 7, conveyed to the threshing device D, threshed by the rotation of the handling drum of the threshing device D, and the grains after threshing are sorted by a rocking sorting device arranged below the threshing device D, and the fines are threshed. Glen tank 5 located on the right side of device D
To be stored. A cabin 20 is located in front of the Glen tank 5.
Is disposed to cover the driving unit, and an engine E is disposed below a seat of the driving unit.

The straw that has been threshed by the threshing device D is passed from the feed chain 7 to a straw chain 9 disposed at the rear thereof and is conveyed backward. A dust exhaust fan 21 is disposed below and in front of the straw chain 9 (FIG. 2). The dust, dust, straw waste, and the like after the sorting are sucked by the sorting device and discharged to the lower rear. In addition, a straw cutting device C is disposed below and below the straw chain 9,
In the straw cutting device C, a disk blade is provided on a rotating shaft horizontally extending in the left-right direction, and a spiral is disposed below the disk blade.

That is, as shown in FIGS. 2, 3, and 4, a low-speed rotating shaft 10, a high-speed rotating shaft 11, and a spiral shaft 12 are sequentially rotatable on the side plates 6L and 6R of the cutter device C from above. Horizontally, the low-speed rotating shaft 10 and the high-speed rotating shaft 1
1. One end of the spiral shaft 12 protrudes outside the side plate 6, and an input pulley is fixed on the low-speed rotating shaft 10,
The power from the engine is transmitted via a belt and further transmitted to the high-speed rotating shaft 11 via a gear. Further, power is transmitted from the low-speed rotation shaft 10 or the high-speed rotation shaft 11 to the spiral shaft 12 via a belt or a chain.

A disk-shaped low-speed rotating blade is fixed on the low-speed rotating shaft 10 at a constant interval, and a disk-shaped high-speed rotating blade is fixed on the high-speed rotating shaft 11 at a constant interval. The low-speed rotary blades and the high-speed rotary blades are arranged alternately. The straw conveyed between the low-speed rotary blade and the high-speed rotary blade is cut by the low-speed rotary blade and the high-speed rotary blade, and cut into a length corresponding to the interval between the rotary blades.

The screw blades 13 and 14 are fixed in series on the spiral shaft 12, and the length of the screw blade 13 on the stock side is smaller than that of the screw blade 14 on the tip side. . In other words, since the volume of straw is larger from the center to the tip of the spike than at the base of the stock, the diameter of the straw is increased so that more straw can be transported from the center to the tip of the spike.

An upper end of a straw guide 15 is supported at the lower end of the side plate 6L on the stock side (left side) so as to be rotatable left and right, and is fixed at the time of shipping according to the number of harvesting strips of the combine. In other words, in the case of a combine harvested by 6 rows, 15
At the position of 15 'in the case of a 5-row combine, and at the position of 15 "in the case of a combine with 7-row cut, and the parts are shared. An upper end of a straw guide 16 is rotatably attached to a lower end of the side plate 6R on the tip side (right side), and the straw guide 16 can be fixed by rotating in the left-right direction according to work. That is, when the cut straw is diffused and discharged into the field, the straw guide 16 is rotated to the right (outside) and fixed, so that it can be split, or the cut straw can be collected and used as a feed or burned. In this case, the straw guide 16 is rotated to the left (inside) and fixed (at the position 16 ') so that the cut straw is discharged to the center of the machine body. The lower cover 17 extends downward from the lower part of the plate, and dust, small cut straw, etc. Is prevented from scattering to the surroundings. The inside of the lower cover 17 by the current plate 19 is fixed as shown in FIG. 4, and established a diffusion state of the straw discharge.

In the present invention, the exhaust wind of the engine E is guided to the rear to promote the diffusion of the cut straw. That is, in the case of a combine having five or more cuts, the width of the straw cutting device C is shorter than the lateral width of the machine body, and the straw cutting device C is arranged biased to the uncut side (feed chain side). The cut straw is not discharged to the portion of the difference between the width of the machine body and the width of the straw cutting device C. Therefore, the present invention provides an exhaust pipe 2 at a mounting portion of a conventional muffler of the engine E.
2, the other end of the exhaust pipe 22 is extended downward, and then extended rearward between the crawlers 1 a of the crawler-type traveling device 1 along the lower position of the body frame 2. I do. A muffler 23 is connected to the rear end of the exhaust pipe 22. The muffler 23 is fixed to the body frame 2 or the track frame of the crawler-type traveling device 1 via a plate 24, and is discharged to the discharge port of the muffler 23. The tube 25 is connected.

The discharge port of the discharge pipe 25 is a crawler 1a.
1a is located between the rear portions thereof, and its discharge direction is directed downward at the tip side of the straw cutting device C. More specifically, in the rear view and the plan view, the sixth line at the rear end of the body (the fifth line in the case of five-cutting). , The angle is set so as to discharge toward the stump of the seventh row. In the side view, the discharge is set to be more backward than the rear end of the body.

Since the grain culm includes a long culm and a short culm, the discharge direction of the discharge pipe 25 can be changed according to the grain culm length. That is, the angle of the discharge pipe 25 attachment portion to the discharge port of the muffler 23 is configured to be changeable, for example, by changing the discharge direction by rotating the discharge pipe 25,
The diffusion state can be arbitrarily changed by forming a bellows and bending it arbitrarily. Further, the discharge pipe 25 is configured to be detachable, and can be replaced with a discharge pipe 25 having a different tip shape, so that maintenance can be easily performed. The shape of the tip of the discharge pipe 25 is wide as a fan, diffused by intensively exhausting and diffusing the tapered and hardened part, and rotating the discharge part to form a turbulent flow by discharging in a vortex shape. It can also be configured to diffuse to

In such a configuration, the straw after threshing is sent to the straw cutting device C by the straw chain 9 and cut and dropped. When the straw is spread and spread on the field by rotation of the screw blades 13 and 14. The cut straw with the spouted side with the volume is dropped by the exhaust wind from the engine E in the middle of the fall, and the direction of the cut is spread and discharged over the entire body width toward the cut side. It becomes.

[0017]

The present invention is configured as described above.
The following effects are obtained. That is, an exhaust pipe is communicated with the exhaust port of the engine, and the discharge port of the discharge pipe communicated via the muffler is positioned below the straw cutting device,
Since the cut straw is configured to be diffused by the exhaust air of the engine, the exhaust energy of the engine, which has not been used at all, can be used effectively for the diffusion of the straw with an extremely simple configuration. Due to the synergistic effect of the diffusion by the spiral and the diffusion by the exhaust air, the cut straw can be evenly diffused even by the straw cutting device arranged at a high position above the ground. In addition, since exhaust gas is exhausted from the rear of the aircraft, the exhaust sound of the engine is so small that it can hardly be heard from the driver's seat, and the exhaust does not flow around to the driver's seat due to tailwind or wind from the side It is.

[Brief description of the drawings]

FIG. 1 is an overall side view of a combine.

FIG. 2 is a side view of the straw cutting device.

FIG. 3 is a plan view of the same.

FIG. 4 is a rear view of the same.

[Explanation of symbols]

 E Engine C Waste cutting device 22 Exhaust pipe 23 Muffler 25 Discharge pipe

Claims (1)

[Claims] An exhaust pipe is communicated with an exhaust port of an engine, the exhaust pipe is extended rearward, and a rear end of the exhaust pipe is connected to a muffler. And a discharge pipe communicating with the discharge port of the muffler, wherein the discharge port of the discharge pipe is positioned downward of the tip side of the straw cutting apparatus.