JP3111137B2 - Waste straw shredder - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a disk-shaped cutting blade in which a plurality of disk-shaped cutting blades are arranged at predetermined intervals on a cutting shaft along the left-right direction and cooperates with the cutting blades. The present invention relates to a waste straw shredding device in which a supply blade is arranged on a supply shaft parallel to the cutting axis in a state corresponding to each cutting blade.

[0002]

2. Description of the Related Art Conventionally, in this type of a waste straw shredding device, as disclosed in, for example, Japanese Patent Application Laid-Open No. 3-198715, the waste straw shredded by a cutting blade and a supply blade is located below. Is well-known in the art, and is further scattered as fertilizer while being scattered on a field by a shredder disperser disposed below the cutting blade and the supply blade. This shredder disperser is configured by providing a blade that is rotatably driven around an axis along a vertical direction, and the blade is used to strike and disperse the shredder. Met.

[0003]

However, in the above-mentioned conventional structure, the shredder is scattered by the tapping action of the blade of the disk which rotates substantially along the horizontal plane. Since the direction tends to be biased in one direction, it is difficult to scatter evenly along the left and right widths of the body even if the direction of the body is caused to collide with, for example, the wall of the case of the shredder. . Conversely, it is also desired that the shredder be concentrated on a specific location in the lateral direction of the aircraft and drop the shredder into the field, so that the shredder can be easily collected. The chopped straw could not be dropped at a specific location. The present invention has been made in view of the above-described circumstances, and it is possible to discharge shredded straw into the field almost uniformly in the lateral width of the machine, and to concentrate on a specific location in the lateral direction of the machine by simple switching. It is an object of the present invention to provide a waste straw shredding device capable of discharging shredded straw into a field.

[0004]

According to the present invention, in order to attain the above object, a plurality of disk-shaped cutting blades are arranged at predetermined intervals on a cutting shaft extending in the left-right direction. the supply blade disc which cleave the exhaust straw in the cutting blade and cooperating, a discharge straw shredding device disposed in the cutting axis parallel to feed axis in a state corresponding to each cutting blade, the Cutting blade
Below the feed blade and around the horizontal axis
The screw shaft that is driven to rotate and the left of this screw shaft
A diffusion plate that extends radially from the middle right
From the left and right sides of the application plate to the left and right sides, respectively
Consists of left and right screw plates wound in opposite directions
The screw body to be installed is installed, and this screw body is
It is characterized in that it is configured to be able to switch the rotation .
Further, the diffusion plate may be provided so as to be inclined with respect to the horizontal axis of the screw shaft. Further, the length of the diffusion plate in the radial direction about the horizontal axis may be freely changeable. The operation and effect of this characteristic configuration are as follows.

[0005]

In other words, the screw body disposed below the cutting blade and the supply blade is driven to rotate around the horizontal axis, and the rotational drive drives the shredder that has fallen downward to screw. In this case, the sheet is dropped downward while being fed sideways while being sorted to the left and right.
The screw body has a diffusion plate at an intermediate position in the left-right direction, and the diffusion plate also rotates in conjunction with the rotation of the screw body, thereby cutting the shredder in the middle of the screw body. A tapping action is provided so as to scatter at the position. As a result, the shredder falls downward while being transported left and right by the screw body, but what falls into the middle part is scattered without the action of transporting the shredder left and right by the diffusion plate body. As a result, it is possible to prevent the downward spraying of the chopped straw at the intermediate portion from being less than the left and right sides. Also, by switching the rotation direction of the screw so as to reverse the direction of spraying and discharging the chopped straw as described above, the chopped straw that has fallen downward from the cutting blade and the supply blade is in the horizontal direction of the machine. Is discharged to the field while being transported so as to gather at the middle part of the field, the shredded straw is left in a streak shape in the field, and the shredded straw can be easily collected later. Furthermore, by providing the plate for diffusion in a state of being inclined with respect to the horizontal axis of the screw body, the plate surface of the plate for diffusion drops to an intermediate portion thereof as compared with the plate along the horizontal axis. It is easy to promote the distribution of the shredded straw that has been left and right, and therefore, even if a relatively large number of shredders fall particularly at the center, there is relatively uniform in the left and right direction Shredded straw is discharged to the field. And by making the length in the radial direction around the horizontal axis of the diffusion plate material variable, the radial length of the diffusion plate member is shortened so as to reduce scattering at the center. Then, while the screw body can be more appropriately brought to the center of the shredder by the reverse rotation drive, and conversely, if the radial length of the plate for diffusion is made longer, the diffusion performance increases, so It is suitable for discharging chopped straw so as to be dispersed.

[0006]

Therefore, compared to the conventional method in which the blades are scattered by the wings, the shredders can be scattered in the field without bias in the left-right direction by feeding the shredders to the left and right by the screw body. In addition, by reversely rotating the screw body, it is possible to discharge the shredded straw to the field in a state where it is brought to the center, and it becomes possible to easily collect the straw later.

[0007]

Embodiments of the present invention will be described below with reference to the drawings. As shown in FIG. 1, a waste straw shredding device 2 according to the present invention is provided at the rear of a threshing device 1 mounted on a combine. As shown in FIGS. 1 to 3, the waste straw shredding device 2 shreds a waste straw in a horizontal posture, which is transported from the threshing device 1 by a waste straw transport chain 3.
A plurality of disk-shaped cutting blades 6 are arranged side by side on a cutting shaft 5 laid on the left and right sides of the outer case 4, and a disk-shaped supply blade 7 is provided on a supply shaft 7 parallel to the cutting shaft 5 at a position corresponding to the cutting blade 6. The blades 8 are arranged side by side. Furthermore, the cutting blades 6 and the supply blades 8
Below the group, there is a screw body 9 along the left and right direction.
And the screw body 9 is configured to be rotatable around a horizontal axis P of the screw shaft 10. As shown in FIG. 6, the cutting shaft 5 is guided by a guide groove 11 provided in the lateral wall of the outer case 4 so that the supply blade 8 and the cutting blade 6 do not interfere with each other. The cutting shaft 5 can be integrally removed from the outer case 4.

As shown in FIGS. 3 to 5, the screw body 9 is provided with a diffusion plate 21 at an intermediate portion of the screw shaft 10 in the left-right direction. Screw plate 1 wound in the opposite direction from the side to the left and right outward.
3L and 13R are connected to the screw shaft 10. The rotation of the screw shaft 10 is driven by an endless rotating belt 14 having a hexagonal cross section as shown in FIG.
Over the drive pulley 15 at the left outer end of the cutting shaft 5, the relay pulley 16, the tension pulley 17, and the input pulley 18 at the left outer end of the screw shaft 10, The rotation is performed in conjunction with the rotation of the cutting shaft 5. The tension pulley 17 is pivotally supported at the end of a tension arm 19 that is swingably supported about the horizontal axis P. The rotation direction of the screw shaft 10 is changed between forward rotation and reverse rotation. The positions of the tension arm 19 and the tension pulley 17 with respect to the input pulley 18 can be changed so that the switching can be performed. In the figure, reference numeral 20 denotes a coil spring for urging the tension arm 19 to swing the belt tension.

And, as described above, the screw shaft 1
0, a pair of diffusion plates 21,
21 in the direction opposite to the horizontal axis P in the radial direction,
That is, it extends radially around the horizontal axis P. Each of the diffusion plates 21 and 21 is provided with ribs 22 # formed on both left and right sides thereof so as to form flanges in a tapered shape in a side view. Furthermore, the left screw plate 1
At the end of the 3L, a scraping plate 23 that can scrape the shredder sent by the screw plate 13L so as not to adhere to the inner wall of the outer case 4 is provided continuously.

According to the above configuration, the shredder that has been cut by the cutting blade 6 and the supply blade 8 and falls downward depends mainly on the culm length of the waste straw, but falls mainly toward the center in the left-right width direction. However, the left and right screw plates 13L and 13R of the screw body 9 in the normal rotation state will be slightly transferred to the left and right outwards during the fall, and the shredded straw is almost uniformly distributed in the left and right direction on the field. Can be sprayed. Further, the diffusion plate 21 is in a state where there is no transfer action of the shredder in the left and right direction so that the scattering at the central portion where the plate 21 is disposed is not reduced. The shredded straw in the body 21
The inner wall is made to collide with the inner wall, thereby increasing the dispersibility of the shredded straw at the center. Further, by setting the screw body 9 to the reverse rotation driving state, the left and right screw plates 13L, 1
The paper is slightly transported toward the center by the 3R, and is discharged downward in a state where it is substantially concentrated at the center in the left-right width direction. In this case, the shredded straw is discharged onto the field in a state of forming a row after the traveling of the combine, and it becomes easy to collect the shredded straw later.

[Other Embodiment] As shown in FIG. 7, the diffusion plate 21 of the screw body 9 is radially disposed with respect to the screw shaft 10 at a position inclined at a predetermined angle to the horizontal axis P thereof. May be. With this configuration, compared to the above-described embodiment in which the plate surface of the diffusion plate 21 is along the horizontal axis P, the distribution of the shredded straw that has fallen to the intermediate portion thereof is distributed to the left and right. Therefore, even in the case where a relatively large number of shredders fall particularly at the center, such as a straw with a short culm, for example, it is relatively uniform in the horizontal direction. The broken straw is discharged to the field.

As shown in FIG. 8, the diffusion plate 21 in the screw body 9 is moved with respect to the screw shaft 10.
A pair of the plate surfaces radially protrude in the radial direction along the horizontal axis P, and each diffusion plate 21 is divided into two in the radial direction. That is, each diffusion plate 21 is provided with a base plate 21A fixed to the screw shaft 10 and a distal plate which can be radially changed with respect to the base plate 21A and which can be connected and fixed with the bolts 24,24. 21B, and the mutual fixing after the position change is performed by fastening with the bolts 24, 24 inserted into the elongated holes 25, 25 formed in the distal end side plate 21B along the radial direction. Therefore, after loosening the bolts 24, 24, the distal end side plate 21B is set at an appropriate position within the range of the long holes 25, 25, and then fixed by the bolts 24, 24. With this configuration, when the screw body 9 is rotated in the normal direction and the shredder is discharged almost uniformly in the left-right width direction, the diffusion plate 21 is most protruded as shown in FIG. When the screw body 9 is reversed and the shredded straw is concentrated and discharged at the center in the left-right width direction, as shown in FIG. By making the 21 most protruding, the diffusion action is weakened, so that the shredder can be more concentrated on the central portion.

The diffusion plate may be configured such that only one plate is provided on the screw shaft, or three or more diffusion plates may be provided on the screw shaft.

In the claims, reference numerals are provided for convenience of comparison with the drawings, but the present invention is not limited to the configuration shown in the attached drawings.

[Brief description of the drawings]

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

FIG. 2 is a vertical cross-sectional view showing a waste straw shredding device.

FIG. 3 is a rear view of a partly broken view showing a waste straw shredding device.

FIG. 4 is a perspective view showing a screw body.

FIG. 5 is a longitudinal sectional side view showing a screw body.

FIG. 6 is a left side view showing the waste straw shredding device,
(A) shows the case of forward rotation of the screw body, and (B) shows the case of reverse rotation of the screw body.

FIG. 7 is a rear view, partially broken away, showing a waste straw shredding device according to another embodiment.

FIG. 8 is a rear view showing a screw body of a waste straw shredding device according to still another embodiment, wherein (a) shows a state in which the diffusion plate is in an extended state, and (b) is in a shortened state. It shows what was done

[Explanation of symbols]

 Reference Signs List 5 cutting shaft 6 cutting blade 7 supply shaft 8 supply blade 9 screw body 10 screw shaft 21 diffusion plate P lateral axis

──────────────────────────────────────────────────続 き Continuing on the front page (72) Takashi Mizobe, Inventor Kubota Seiki Co., Ltd., 4-5-1-5 Mitsudori, Mihara-cho, Minamikawachi-gun, Osaka (56) Reference Kaisho 55-114554 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) A01F 12/40 A01F 29/00-29/22

Claims (3)

(57) [Claims] A plurality of disk-shaped cutting blades (6) are arranged on a cutting shaft (5) along the left-right direction at predetermined intervals on the left and right sides, and a circle for cutting a waste straw in cooperation with the cutting blade (6). A waste straw shredding device in which a plate-shaped supply blade (8) is arranged on a supply shaft (7) parallel to the cutting shaft (5) in a state corresponding to each cutting blade (6), wherein the cutting blade (6) and the horizontal direction below the supply blade (8)
That is driven to rotate about the horizontal axis (P) along the axis
Screw shaft (10) and the left and right middle of this screw shaft (10).
A diffusion plate (21) extending radially from the gap;
From the left and right sides of the diffusion plate (21)
Left and right screws wound in opposite directions
Screw composed of plates (13L) and (13R)
A body (9) is erected, and the screw body (9) is turned forward and reverse.
A waste straw shredding device that is configured to be replaceable . 2. The waste straw shredding device according to claim 1, wherein the diffusion plate (21) is provided so as to be inclined with respect to the horizontal axis (P) of the screw shaft (10). . 3. The exhaust straw according to claim 1, wherein a length of the diffusion plate in a radial direction about the lateral axis is variable. Cutting device.