JPH10276562A - Combine - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cutter device for discharging waste straw cut by a cutter while mixing it with dust after sorting by integrally attaching a dust fan to the cutter unit of combine since the cut waste straw flows to the unreaped side together with dust while flying around at the back of main body because of the configuration of simply backward discharging dust through a dust fan provided at the rear part of sorter for combine. SOLUTION: The cutter unit is arranged at the rear part of combine, the dust fan for discharging dust generated at the sorter is provided at the lower part of cutter unit while being positioned at the back of sorter, the rear part of fan case 25 for the dust fan is positioned under a rotary blade for cutting waste straw, and a discharge guide 36 inclined to the reaped side is provided at the rear end of fan case 25.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a cutter device in which a dust exhaust fan is integrally mounted on a cutter unit of a combine, and the dust cut by a cutter and the sorted dust are mixed and discharged.

[0002]

2. Description of the Related Art Conventionally, culms are harvested by a combine, and after threshing, paddy is sorted, fine grains are stored in a Glen tank, and dust and straw debris after being sorted by a sorting device are removed by a dust exhaust fan. It was sucked and discharged backward. The dust exhaust fan is disposed at the rear of the sorting device of the main body, sucks dust generated by the sorting device and discharges the dust backward. Then, a cutter device is disposed at the rear portion, and the cutter device is configured to be able to rotate rearward for easy maintenance.

[0003]

Conventional dust exhaust fans are provided on the side and rear of the sorting device, and both are disposed on the main body side, making maintenance difficult. Also,
Since the dust was exhausted by the dust exhaust fan, the dust was only discharged backward, so that the dust soared behind the main body, and the cut straw along with the dust was flown to the uncut side. When the streaks were cut off, the straw was in the way, and in the case of tailwind, dust might flow to the driver's seat.

[0004]

The problems to be solved by the present invention are as described above. Next, means for solving the problems will be described. That is, a cutter device is provided at the rear of the combine, and a dust exhaust fan is provided at a lower portion of the cutter device and located behind the sorting device to discharge dust generated by the sorting device. The rear of
A discharge guide is provided below the rotary blade for cutting waste straw, and a discharge guide inclined to the cut side is provided at the rear end of the fan case. In addition, a plurality of the discharge guides are provided, and the discharge guides are sequentially arranged so that these discharge guides become shorter as the cutting is completed.

[0005]

Embodiments of the present invention will be described below in detail with reference to the drawings. Fig. 1 is an overall side view of the combine, Fig. 2
3 is a front view of the same, FIG. 3 is a rear perspective view of the cutter unit with a rear cover removed, FIG. 4 is a perspective view of a state in which the cutter unit is pivotally opened about one side of the main body, and FIG.
6 is a rear side view with the cutter cover removed, FIG. 6 is a plan view of a dust discharge fan portion, and FIG. 7 is a partial rear view of the cutter unit support.

1 and 2, the overall structure of the combine will be described. The body frame 2 is mounted on the crawler type traveling device 1, and a reaping portion A is projected forward and leftward on the body frame 2, and the reaping input portion at the rear of the reaping frame 4 is attached to the body frame 2. It is rotatably supported with respect to it and can be moved up and down by a hydraulic cylinder. A weeding board 3 is arranged at the front end of the mowing frame 4, an elevating device F is arranged at a rear portion thereof, and a cutting blade 5 is arranged below the weeding board F. The root is lifted and cut by the cutting blade 5, and is conveyed rearward by the conveying device.

A threshing unit D is arranged at the rear of the cutting unit A,
The root of the grain culm conveyed by the conveying device is passed on to the feed chain 7, and while being nipped and conveyed by the feed chain 7, the tip portion passes through the threshing device D and is threshed. Sorted by the sorting device arranged below, and the sorted granules are stored in the Glen tank 8 arranged on the right side of the threshing unit D via the frying conveyor.

Reference numeral 9 denotes a discharge auger for transferring the grains in the Glen tank 8 out of the machine. An operating section C having a driver's seat 10, a traveling lever 11, a main shift lever 12, and the like is arranged at the front of the Glen tank 8, and an engine, a transmission, and the like are arranged below the operating section C.

On the rear side of the feed chain 7 above the threshing section D, a straw chain 13 is arranged,
The cutter device of the present invention is disposed below and below the straw chain 13, and the straw after threshing by the threshing unit D is conveyed backward by the straw chain 13, cut by the cutter device, and placed on a field. To be released.

3 to 7, the construction of the cutter device will be described. The cutter device is the left and right cutter side plates 15L.
A low-speed cutter shaft 16, a high-speed cutter shaft 17, and a diffusion shaft 18 are rotatably suspended from above during 15R, and a disc-shaped low-speed rotary blade 20 is placed on the low-speed cutter shaft 16.
Are fixed on the high-speed cutter shaft 17 at fixed intervals with a disk-shaped high-speed rotary blade 21. The low-speed rotary blade 20 and the high-speed rotary blade 21 are alternately arranged. , So that they are partially overlapped in a side view. A spiral blade 22 is provided on the diffusion shaft 18 so that the cut straw is conveyed and discharged while being diffused to the cut side, and a cutter unit G is configured by the rotating blade and the diffusion blade. ing.

A dust exhaust fan 23 is disposed in front of the high-speed cutter shaft 17 and the diffusion shaft 18 with the fan shaft directed to the left and right. The dust exhaust fan 23 is a cross-flow fan. As shown in FIG. 4, when the cutter device is rotated forward and closed substantially in line with the width of the straw rack 24 arranged at the rear of the sorting device, the front of the dust discharge fan 23 faces the rear of the sorting device. It is arranged so that dust and straw chips generated by the sorting device are sucked and discharged backward.

The dust exhaust fan 23 is housed in a fan case 25, and a drive shaft 26 of the dust exhaust fan 23 penetrates the cutter side plate 15L and has a pulley 27 fixedly mounted on an end thereof.
Further, pulleys 28 and 29 are fixed on the ends of the high-speed cutter shaft 17 and the diffusion shaft 18, respectively, and a belt 30 is wound around the pulleys 28 and 29 and the pulley 27.
Power is transmitted from the sorting device. A locking rod 31 is provided laterally on the cutter side plate 15L in the front-rear direction on the outer side of the pulley 29, and a locking rod 32 is also provided on the upper part of the cutter side plate 15L to cover the left side of the cutter unit G. An engaging portion provided on the inner surface side of the cover (pulley cover) can be locked.
It also plays the role of a belt slippage prevention member. In addition,
Gears are fixedly provided on the right ends of the low-speed cutter shaft 16 and the high-speed cutter shaft 17 so as to mesh with each other, so that rotational power in the opposite direction is transmitted from the high-speed cutter shaft 17 to the low-speed cutter shaft 16. .

The front part of the fan case 25 projects forward from the front cover 33 of the cutter unit G. When the cutter unit G is closed, the front part of the fan case 25 fits over the straw rack 24. A gap is formed between the front cover 33 and the rear cover 34 of the main body. An electrical box 35 is disposed in the gap, and a connector or the like is housed in the electrical box 35 to effectively use this space. doing.

The rear part of the fan case 25 is provided with a diffusion shaft 18.
The fan case 25 has a plurality of discharge guides 36 projecting from the rear end thereof. That is, the rear portion of the fan case 25 is formed in a tubular shape, and the discharge guides 36a, 36b,... 36b project inclining in the direction of the cut side (right). This is because the fan case 25 is located on the left side with respect to the main body because it is located behind the sorting device, so that the blowout direction from the dust discharge fan 23 is directed to the cut side, and the dust is removed to the uncut side. Etc. are prevented from accumulating. These discharge guides 36a, 36b,.
Is configured to be shorter (36a> 36b) on the cut side, so that it is proportional to the amount of straw and the diffusion is uniform. A rubber dripping 37 is arranged at the left end of the rear part of the fan case 25 to guide the exhaust air in the same manner as the exhaust guide 36. However, the number of the discharge guides 36 is not limited, and the rubber sagging 37 may be used as the discharge guide. Further, the discharge guide 36 can be tilted not only in the horizontal direction in plan view but also in the vertical direction in rear view according to the amount and diffusion state of the straw.

Since the rear portion of the fan case 25 is disposed below the cutter device, the exhaust air from the exhaust fan 23 is directed to the cut side by the exhaust guide 36 and cut from above. The discharged straw falls, and the cut straw is mixed with the dust and the waste of the straw and diffused, so that the rising of the dust is suppressed.

The cutter unit G provided with the rotary blades 20 and 21 and the dust exhaust fan 23 is rotatably supported on the right side at the rear of the main body, and has a locking device 14 on the upper left side.
(FIG. 5) is provided, and by releasing the lock device 14 by removing the belt 30, the cutter unit G can be pivoted backward and opened as shown in FIG. 4, so that maintenance and the like can be facilitated. I have to.

As shown in FIGS. 5 and 7, a bracket 39 is fixed to a lower rear portion of the cutter side plate 15L, and a rear end of a support pipe 40 is fixed to the bracket 39. The support pipe 40 extends downward and forward.
Is bent in an L-shape. On the other hand, the receiving plate 41 is fixed to the rear surface of the body frame 2 (or is fixed to the body frame 2 via a mounting member), and
Reference numeral 1 denotes a “L” shape when viewed from the side, and the front end of the support pipe 40 bent in an L shape is a receiving plate 41.
Riding along the slope of the vehicle allows positioning. In this state where the cutter unit G is fixed to the machine side by the lock device 14,
The support pipe 40 is laid between the left side of the lower rear of the cutter device and the machine frame 2 of the lower front, and a weeding action for preventing the grain stalk from falling down to the machine body side, Acts as a guard member to prevent the body from hitting the ridges etc. when moving backward or turning, and also acts as a handle when turning and opening or closing the cutter unit G backward. ing.

[0018]

The present invention is configured as described above.
The following effects are obtained. That is, since a dust exhaust fan located in the lower part of the cutter device and located behind the sorting device and discharging dust generated by the sorting device is provided in the left-right direction, the dust exhaust fan is also rotated when the cutter device is rotated backward. It rotates at the same time, making maintenance easier, and
The rear part of the fan case of the dust exhaust fan is positioned below the rotary blade for cutting the straw, and a discharge guide inclined to the cut side is provided at the rear end of the fan case. The straw waste is guided by the discharge guide and discharged to the cut side, and the discharged wind is mixed with the cut waste falling from above, the spread of the cut straw is promoted, and the rising of the dust is suppressed. It is. Further, since a plurality of discharge guides are provided and these discharge guides are sequentially arranged so as to be shorter as the mowing side, it is spread according to the amount of waste straw, and it is possible to discharge dust substantially uniformly. It is.

[Brief description of the drawings]

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

FIG. 2 is a front view of the same.

FIG. 3 is a rear perspective view of the cutter unit with a rear cover removed.

FIG. 4 is a perspective view of a state in which the cutter unit is opened by pivoting around one side of a main body.

FIG. 5 is a rear side view in a state where a cutter cover is removed.

FIG. 6 is a plan view of a dust exhaust fan portion.

FIG. 7 is a partial rear view of the cutter unit support portion.

[Explanation of symbols]

 G Cutter unit 20 Low-speed rotating blade 21 High-speed rotating blade 23 Dust exhaust fan 25 Fan case 36a / 36b / 36c / 36d Discharge guide

Claims (2)

[Claims] 1. A cutter device is provided at a rear portion of the combiner, and a dust fan is disposed below the cutter device and located behind the sorting device to discharge dust generated by the sorting device. A combiner characterized in that a rear part of the fan case is positioned below a rotary blade for cutting waste straw, and a discharge guide inclined to a cut side is provided at a rear end of the fan case. 2. The combine according to claim 1, wherein a plurality of the discharge guides are provided, and the discharge guides are arranged in such a manner that the discharge guides become shorter as the cutting is performed.