JP3111139B2 - Waste straw cutting device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a waste stirrer cutting device equipped with a combine or a harvester and the like to cut a stirrup of a threshed grain stem, wherein a plurality of disc-shaped receiving blades are arranged in an axial direction. The receiving blade shafts that are arranged at intervals and the cutting blade shafts at which a plurality of disc-shaped cutting blades are arranged at intervals in the axial direction are supported in parallel or substantially parallel to each other, A cutting length capable of changing the cutting length of the waste straw by selecting a combination of the receiving blade and the cutting blade capable of cutting the waste straw by changing a distance between the receiving blade shaft and the cutting blade axis. The present invention relates to a waste straw cutting device provided with a change means.

[0002]

2. Description of the Related Art As one example of a waste straw cutting device, there is one provided with a rear portion of a combine as disclosed in, for example, Japanese Patent Laid-Open No. 1-181728. Disc-shaped receiving blade (9 in FIG.
a, 9b) are arranged in the axial direction at a distance from each other in a receiving shaft (8 in FIG. 6 of the above publication) and a plurality of disc-shaped cutting blades (7 in FIG. 6 of the above publication) in the axial direction. The cutting blade shaft (6 in FIG. 6 of the above-mentioned publication) which is arranged at an interval is supported in parallel or substantially in parallel, and a plurality of disc-shaped receiving blades are first large-diameter receiving blades (see the publication of the above publication). 6a) and a small-diameter second receiving blade (see FIG.
9b), and the supporting member (11 in FIG. 1 of the above-mentioned publication) of the receiving blade shaft is movably supported in a direction perpendicular to the shaft, and the receiving member shaft is cut by the movement of the supporting member. By changing the distance between the blade shaft and the shaft, a combination of the receiving blade and the cutting blade capable of cutting the waste straw, that is, the combination of the first receiving blade and the second receiving blade and the cutting blade cuts the waste straw short. A cutting length changing means capable of changing a cutting length of the discharged straw by selecting one of a state and a state in which the discharged straw is cut long by a combination of only the first receiving blade and the cutting blade is provided. I have.

Further, the receiving blade and / or the cutting blade for cutting the waste straw are worn and their sharpness deteriorates when used for a long period of time, and the outer diameter thereof is gradually reduced, so that a combination capable of cutting the waste straw is used. The overlap margin in the axial direction of the receiving blade and the cutting blade that constitutes is insufficient, and it becomes impossible to cut the waste straw well.In such a case, conventionally, the receiving blade or the cutting blade that cuts the waste straw or Both of them are removed from the waste straw cutting device and polished again, or replaced with new blades.Especially, the overlap between the receiving blade and the cutting blade in the axial direction is insufficient and the waste straw is removed. If you can't cut it well, you can replace it with a new blade.

[0004]

Therefore, in order to maintain a predetermined cutting performance, it is necessary to frequently remove the receiving blade and / or the cutting blade for cutting the waste straw from the waste straw cutting device. There is a disadvantage that the efficiency is reduced.

The present invention has been made in view of the above circumstances, and focuses on a structure in which the center distance between a receiving blade shaft and a cutting blade shaft is changeable. An object of the present invention is to provide a waste straw cutting device that can easily maintain a predetermined cutting performance for a long period of time without frequently removing a receiving blade and / or a cutting blade or both of the waste straw from the waste straw cutting device.

[0006]

To achieve the above object, the present invention is characterized by a receiving blade shaft in which a plurality of disk-shaped receiving blades are arranged at intervals in the axial direction, and a plurality of disks. Cutting blades are arranged in parallel with each other or substantially parallel to each other, and the receiving blades are arranged in parallel with each other.
The remaining surface on one side of the blade or the cutting blade or both blades
A thin hard layer with more wear resistance than one side of
And a combination of the receiving blade and the cutting blade capable of cutting a waste straw.
Between the receiving blade axis and the cutting blade axis.
Cutting length changing means that can change the cutting length of the waste straw by selecting
And the waste straw selected by changing the cutting length changing means.
Fine adjustment of the inter-axis distance while maintaining the cutting length of
There is a simple adjusting means provided .

[0007]

As shown in FIG. 9, the receiving blades 5a and 5b or the cutting blade 4
Alternatively, a thin hard layer 4c having more wear resistance than the remaining one surface is provided on one surface 4e of both blade portions 27, so that the tip of the blade portion 27 is worn. The blade 2
7 do not wear uniformly, and the degree of progress of wear of the one side 4e on which the hard layer 4c is provided is smaller than that of the remaining one side, so that the blade portion 27 wears out during long-term use. However, as shown by the imaginary line in the figure, the end surface of the thin hard layer 4c with a small degree of progress of wear is always the tip edge 4 of the blade portion 27.
By forming d, the blade portion 27 can be maintained sharp for a long period of time.

[0008] Even if the blade 27 is worn, the blade 2
7 can be maintained sharply, but the outer diameter gradually decreases, so that, during long-term use, the receiving blade and the cutting blade, which constitute a combination capable of cutting the waste straw, as viewed in the axial direction. The overlapping allowance is insufficient, and the straw cannot be cut well,
In this case, it is necessary to replace the blade with a new blade. In particular, according to the present invention, since the adjusting means capable of finely adjusting the distance between the receiving blade axis and the cutting blade axis is provided, the fine adjustment by this adjusting means The overlapping allowance of the receiving blade and the cutting blade in the axial direction can be corrected to an overlapping allowance in a predetermined range, and the distance between the receiving blade shaft and the cutting blade axis is provided to be changeable. By utilizing the structure, this adjusting means can be provided by a simple structural change.

That is, if the distance between the receiving blade axis and the cutting blade axis is not provided so as to be changeable, even if the distance between the receiving blade axis and the cutting blade axis is finely adjusted, It is necessary to modify the transmission structure so that the cutting blade shaft or both can be driven.However, since the center distance between the receiving blade shaft and the cutting blade shaft is already provided so as to be changeable, such a modification is required. The adjusting means can be provided by a simple structural change without any further application.

[0010]

Accordingly, it is easy to maintain the predetermined cutting performance for a long period of time without frequently removing the receiving blade and / or the cutting blade for cutting the waste straw from the waste straw cutting device with a simple structure change. .

[0011]

DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the present invention will be described below with reference to the drawings. [First Embodiment] FIG. 1 shows a waste stirrer cutting device A provided at the rear of a combine. A waste stirrer coming out of a threshing device B is fed into a waste stirrer cutting device A from a transport device C and cut. It is processed.

As shown in FIGS. 1 and 2, the waste straw cutting device A has a cutting blade shaft 2 and a receiving blade shaft 3 supported in parallel with each other across right and left side plates 1. A plurality of disk cutters 4, which are disk-shaped cutting blades, are arranged on the shaft 2 at predetermined intervals D in the axial direction with a spacer interposed therebetween. Of the first receiving blade 5a and the second
The receiving blades 5b are arranged at predetermined intervals D and E in the axial direction with the spacer interposed therebetween.

An input pulley 6a fixed to the cutting blade shaft 2
The power of the threshing device B is transmitted via the output pulley 6b and the transmission belt 6c, and the cutting blade shaft 2 is driven to rotate counterclockwise in FIG. The power from the input pulley 6a is transmitted to the input gear 7a via the output sprocket 7b, the transmission chain 7c, the input sprocket 7d, and the gear 7e, and the receiving blade shaft 3 is lower in speed than the cutting blade shaft 2; Is rotated clockwise.

The cutting blade shaft 2 is supported at a fixed position with respect to the left and right side plates 1, and the receiving blade shaft 3 is provided on each of the left and right side plates 1 around a support shaft 8 concentric with a gear 7e. Pivotally supported over left and right support members 9 which are swingably mounted,
The support member 9 is swung while maintaining the mesh between the gear 7e and the input gear 7a, so that the center distance between the receiving blade shaft 3 and the cutting blade shaft 2 can be changed.

As shown in FIG. 3 and FIG.
A fixing means for fixing the relative shaft support position of the receiving blade shaft 3 to the cutting blade shaft 2 at any one of two positions near and far between the receiving blade 5 and the side plate 1 is provided. The cutting length changing means F is configured to select a combination of 5b and the disk cutter 4 by changing the center distance between the receiving blade shaft 3 and the cutting blade shaft 2 and change the cutting length of the waste straw. I have.

The fixing means holds one of a pair of left and right hook members 11a and 11b, which are swingably supported around a pin 10 fixed to a support member 9, at a distance from the side plate 1 in the longitudinal direction of the body. Is fixed to one of the two lock pins 12a, 12b formed in the shape of a bottomed cylindrical shaft fixed at a distance from each other, so that the shaft supporting position of the receiving blade shaft 3 with respect to the cutting blade shaft 2 can be any one of near and far. The left and right hook members 11a and 11b are pulled and urged at a position above the pin 10 so that the hook members 11a and 11b and the lock pin 12 are fixed.
a, 12b and a tension spring 13 for maintaining the locked state.
And a regulating pin 1 for regulating the swing range of the left and right hook members 11a and 11b with respect to the support member 9 at a position below the pin 10.
4, hook members 11a, 11b and lock pins 12a,
An operating means G for releasing the engagement with 12b is provided.

Then, as shown in FIG. 3, the first hook member 11a is locked to the first
Is fixed, the pivotal support position of the receiving blade shaft 3 with respect to the cutting blade shaft 2 becomes the first receiving blade 5 a and the second receiving blade 5
The combination of the receiving blade 5b and the disk cutter 4 switches to a first cutting position where the waste stirrer is cut short, releases the engagement between the first hook member 11a and the first lock pin 12a, and then moves the support member 9 to the body. When the second hook member 11b is locked and fixed to the second lock pin 12b as shown in FIG. 4, the pivotal support position of the receiving blade shaft 3 with respect to the cutting blade shaft 2 is adjusted as shown in FIG. As shown in the right half of the figure, the second receiving blade 5b is separated from the disk cutter 4 and is switched to the second cutting position where the combination of the first receiving blade 5a and the disk cutter 4 cuts the waste straw longer.

The operating means G includes a receiving member 3
A ring member 15 rotatably supported around the shaft, and an operating lever 1 rotatably supported around a shaft member 17
6 and a link mechanism 18 for linking the swinging operation of the operating lever 16 and the rotational movement of the ring member 15, and the operating lever is switched to the first cutting position shown in FIG. When the base member 16 is pivoted downward, the projecting piece 19 integrally formed on the outer peripheral side of the ring member 15 rotates while pressing the lower end side of the first hook member 11a, and the first hook member 11a is rotated by the first lock pin 12a. When the operation lever 16 is swung upward in a state in which the operation lever 16 is forcibly swung to a position for releasing the engagement with the second hook member 11b while being switched to the second cutting position shown in FIG. The second hook member 11b is forcibly pivoted to a position where the second hook member 11b releases the engagement with the second lock pin 12b while pressing the lower end of the second hook member 11b.

As shown in FIGS. 5 and 6, the first lock pin 12a and the second lock pin 12b are provided on a base plate 20 fixed to the outer surface of the side plate 1 so as to cover the front and back of the base plate 20. The base plate 20 and the side plate 1 are screwed from the outer side of the side plate 1 with the upper part of the base plate 20 being screwed to the nut 21 welded and fixed to the inner side of the side plate 1. And the lower part of the base plate 20 is screwed from the inner side of the side plate 1 into the female screw formed on the inner peripheral surface of the first lock pin 12a and the second lock pin 12b. Second bolts 2
3, the first bolt 22 and the second bolt 22 are fixed.
An adjusting means capable of finely adjusting the inter-axis distance between the cutting blade shaft 2 and the receiving blade shaft 3 is provided in the fastening portion fixed by the bolt 23.

The adjusting means forms a dharma hole 24 through which one first bolt 22 is inserted and a long groove-shaped notch 25 through which the other first bolt 22 is inserted in the base plate 20, and a second bolt Dharma hole 2 through which each of 23 is inserted
6 is formed on the side plate 1.

When the disc cutter 4 and the first receiving blade 5a and the second receiving blade 5b are normally worn little during normal operation, the first bolt 22 is inserted into the darma hole 24 and the notch 25 on the rear side of the machine, and the second bolt 22 is inserted. The base plate 20 is fixed by inserting the bolt 23 into the body front side portion of the darma hole 26, and the first and second hook members for the first and second lock pins 12 a and 12 b positioned by fixing the base plate 20. 1
Switching to the first cutting position or the second cutting position is performed by the locking of 1a and 11b.

The wear of the disk cutter 4, the first receiving blade 5a and the second receiving blade 5b progresses, and the axial center of the disk cutter 4 and the first and second receiving blades 5a and 5b at the first cutting position. When the overlap margin in the direction view or the overlap margin in the axial direction view between the disc cutter 4 and the first receiving blade 5a at the second cutting position is insufficient and the predetermined cutting performance cannot be maintained, the first bolt The base plate 20 is fixed by inserting the second bolt 23 into the body rear side portion of the darma hole 26 and the notch 25, and the second bolt 23 is inserted into the body rear side portion of the darma hole 26. When the first and second hook members 11a and 11b are engaged with the positioned first and second lock pins 12a and 12b to switch to the first cutting position or the second cutting position, the first cutting position and the second cutting position are switched. Any of the cutting position Also in location, cutting shaft 2 and the receiving blade shaft 3
Is finely adjusted in the approaching direction by an amount corresponding to the change in the insertion position of the first and second bolts 22 and 23, and the disk cutter 4 and the first and second receiving blades 5a and 5b at the first cutting position are adjusted.
The overlap margin of the disc cutter 4 and the first receiving blade 5a at the second cutting position in the axial direction is corrected to a necessary overlap margin, and the predetermined cutting is performed. Performance can be restored.

FIGS. 7 and 8 show the disk cutter 4. The blade portion 27 of the disk cutter 4 has a circular plate-like metal main body 4.
After the outer peripheral portion 4b is pressed into a shape in which the corrugated shape is annularly continuous, as shown in FIG. 9, an abrasion-resistant compound such as a vanadium alloy or the like is welded or sprayed on one surface 4e. Forming a thin hard layer 4c having a micro Vickers hardness of about 3200 and a thickness of about 8 microns, which is more wear-resistant than the remaining one side, and the outer peripheral portion 4b from the side where the hard layer 4c is not formed. Is formed into a saw blade shape by diagonally cutting the peripheral edge of the thin layer 4c so as to intersect with the plate surface.
Form a sharp tip edge 4d of the blade portion 27.
Since the first receiving blade 5a and the second receiving blade 5b are also configured in the same manner as the disk cutter 4, the description thereof will be omitted.

[Second Embodiment] FIG. 10 shows another embodiment of an adjusting means capable of finely adjusting the center distance between the cutting blade shaft 2 and the receiving blade shaft 3, and includes a first lock pin 12a and a second lock. Pin 12b
Is welded and fixed to a base plate 20 fixed to the inner surface of the side plate 1 and protrudes toward the outer surface of the side plate 1 through an elongated hole 28 formed in the side plate 1. The base plate 20 and the side plate 1 A fixing bolt 29 protruding inward is fixed by welding, and the bolt 29 is formed in a long hole 3 formed in the base plate 20.
The base plate 20 is configured to be slidable in the longitudinal direction of the machine by loosening the nut 31.

The adjusting means may be configured such that one end of the base plate 20 is L
An adjusting bolt 33 welded and fixed to the inner surface side of the side plate 1 is inserted into a tongue piece 32 formed by bending into a letter shape, and a double nut 34 for fixing the base plate 20 slid to a desired position to that position. By changing the fixing position of the base plate 20 to the side plate 1, the fixing positions of the first lock pin 12a and the second lock pin 12b to the side plate 1 are changed, and the first and second lock pins 12a and 12b are changed.
a and 12b with respect to the first and second hook members 11a and 11b.
changing the fixing position of the support member 9 in the state where b is locked,
The center distance between the cutting blade shaft 2 and the receiving blade shaft 3 can be continuously adjusted within a certain range. Other configurations are the same as in the first embodiment.

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 a schematic side view of a waste stirrer cutting device provided at a rear portion of a combine.

FIG. 2 is a schematic plan view showing the inside of a waste straw cutting device.

FIG. 3 is a side view of a main part at a first cutting position.

FIG. 4 is a side view of a main part at a second cutting position.

FIG. 5 is a schematic side view of a main part.

FIG. 6 is a partial sectional view of a main part.

FIG. 7 is a side view of a main part.

FIG. 8 is an enlarged view of the end face of the blade portion viewed from a radial direction.

FIG. 9 is a radial cross-sectional view of the blade portion.

FIG. 10 is a schematic side view of a main part showing a second embodiment.

FIG. 11 is a sectional view of a main part.

[Explanation of symbols]

 2 Cutting blade shaft 3 Receiving blade shaft 4 Cutting blade 4c Hard layer 4e One surface 5a Receiving blade 5b Receiving blade 27 Blade portion F Cutting length changing means

──────────────────────────────────────────────────続 き Continuation of the front page (72) Noboru Kishida, Inventor 64 Ishizukita-cho, Sakai-shi, Osaka Kubota Sakai Works Co., Ltd. (56) References JP-A-1-181728 (JP, A) JP-A-5-181 103536 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) A01F 29/00-29/22 A01F 12/40

Claims (1)

(57) [Claims] 1. A receiving shaft (3) in which a plurality of disc-shaped receiving blades (5a, 5b) are arranged at intervals in an axial direction, and a plurality of disc-shaped cutting blades (4) in an axial direction. A cutting blade shaft (2) arranged at an interval is supported in parallel or substantially parallel to each other, and the receiving blade (5a, 5b) or
One surface (4) of the cutting blade (4) or both blade portions (27)
e) a thin, harder, more abrasion-resistant
Receiving blade provided with a material layer (4c) and capable of cutting waste straw
(5a, 5b) and the combination of the cutting blade (4)
By changing the distance between the receiving shaft (3) and the cutting blade shaft (2)
Cutting length changing hand that can select and change the cutting length of waste straw
By changing the step (F) and the cutting length changing means (F)
While maintaining the cut length of the selected straw,
A waste stirrer cutting device provided with adjusting means capable of finely adjusting the separation .