JP2559936Y2 - Cutting mechanism in cylinder type agricultural cutter - Google Patents

Description

[Detailed description of the invention]

[0001]

BACKGROUND OF THE INVENTION The present invention relates to a cylinder type agricultural cutter for cutting grass, straw culm, etc., in a posture in which a blade is parallel to a main shaft penetrating right and left through a shaft portion of a cutting chamber. A cylinder type comprising a rotary blade to be assembled via a blade mounting metal, and a fixed blade fixedly mounted on a blade support base fixedly installed at an entrance portion of the cutting chamber so that the blade body is in a posture parallel to the main shaft. The improvement of the cutting mechanism.

[0002]

2. Description of the Related Art A cylinder-type agricultural cutter A is usually
As shown in FIG. 1, a cutting chamber 2 formed in the shape of a drum is mounted on a machine frame 1 in such a manner that the axial direction thereof is in the left-right direction, and the front side of the peripheral wall of the cutting chamber 2 ( A feed roll case 3 that supports feed rolls 30 and 31 is connected to the front surface of the entrance 20 of the cutting chamber 2 formed on the right side in FIG. And a base end of the supply gutter 32 is connected to an opening on the front side thereof, and a discharge port 21 is opened on the rear side of the cutting chamber 2 facing the inlet 20. The base end of the discharge gutter 22 is connected thereto. In addition, a main shaft S penetrating left and right is arranged at a shaft center portion of the cutting chamber 2, and left and right shaft ends of the main shaft S are
Machine frame 1 via a bearing and a bearing support member (not shown)
And one end of the shaft is transmitted to an output shaft of a prime mover (not shown) via a transmission mechanism to drive the main shaft S to rotate clockwise in FIG. And
As shown in FIG. 2, a blade mounting metal 4 having a pair of left and right arm-shaped portions 4a is attached to left and right shaft ends in the cutting chamber 2 of the main shaft S, and radial ends of the blade mounting metal 4 are provided. The rotary blade 5 whose blade edge 50 extends along the axial direction of the main shaft S is mounted on the blade mounting seats 40, 40 formed in the portion, and the fixed blade 6 facing the rotary blade 5 is cut. Entrance 20 of cutting room 2
And fixedly mounted on the machine frame 1 by assembling the fixed blade support 7 provided on the machine frame 1 at a position along the edge of the machine frame 1. The material to be cut, which is fed into the cutting chamber 2 by the feeding rolls 30 and 31, is fixedly mounted at a position along the edge of the entrance 20 of the cutting chamber 2 and around the main shaft S. Cutting by a cylinder type cutting mechanism a comprising a rotary blade 5 rotating in a cylindrical shape,
The gas is discharged from the discharge port 21 of the cutting chamber 2.

The rotary blade 5 of the cutting mechanism a
The blade assembly seats 40 and 4 provided on the blade mounting bracket 4 with the blade edge 50 of the blade mounting shaft 4 positioned so as to be in parallel with the rotation axis of the main shaft S.
When it is mounted on the blade 0, the range over the entire width in the longitudinal direction of the blade edge 50 of the rotary blade 5 comes into contact with the blade edge 60 of the fixed blade 6 at a time. Since the required horsepower when moving is increased, the rotary blade 5 has an axial center line S ′ of the main shaft S such that one end in the longitudinal direction of the blade edge 50 advances in the rotation direction and the other end delays as shown in FIG. , So that the rotary blade 5 sequentially contacts the fixed blade 6 from one end of the blade edge 50. At this time, the rotary blade 5 has a blade body 5a having a straight plate shape and a blade edge 50.
Is formed in the shape of a straight blade that is continuous in a straight line, the rotation trajectory of each portion of the blade edge 50 in the longitudinal direction becomes a continuous shape that gradually becomes smaller in diameter toward the central portion of the blade edge 50 in the longitudinal direction. Since the fixed blade 6 is not properly aligned with the blade edge 60, the rotary blade 5 is usually formed as a twisted blade having a twisted blade body 5a as shown in FIG.

[0004]

The cutting mechanism a in the conventional cylinder type agricultural cutter configured as described above is as follows.
Since the rotary blade 5 is formed as a twisted blade, the rotary blade 5
Is troublesome to manufacture, and furthermore, there is a problem that the operation of assembling and setting the rotary blade 5 so as to rotate while maintaining a predetermined interval with respect to the blade edge 60 of the fixed blade 6 and the polishing means are troublesome. .

SUMMARY OF THE INVENTION The present invention has been made in order to solve the problem which has occurred in the cutting mechanism of the conventional cylinder type agricultural cutter, and has a rotary blade in which the blade has a straight plate shape. So that the edge of the blade is inclined with respect to the axis of the main shaft so that the edge of the fixed blade is sequentially rubbed against the edge of the fixed blade from one end in the longitudinal direction. However, the blade edge of the rotary blade and the blade edge of the fixed blade are rubbed with each other while maintaining a substantially constant gap over their entire width in the longitudinal direction, thereby reducing the required horsepower. It is intended to provide a new means for facilitating manufacture and assembly.

[0006]

According to the present invention, as a means for achieving the above-mentioned object, a cutting shaft is attached to a main shaft which penetrates the shaft portion of the cutting chamber to the left and right. A rotary blade is formed in a straight blade shape with a blade body in a straight plate shape and a blade edge along a straight line, and the axis of the main shaft is such that one end in the longitudinal direction of the blade edge is forward in the rotation direction and the other end is delayed. At the entrance of the cutting chamber, a fixed blade support is provided, and the fixed blade mounting surface facing the cutting chamber is convex toward the cutting chamber in plan view. The fixed blade is fixedly mounted on the fixed blade mounting surface of the fixed blade support base, and the fixed blade is bent by a resilient steel material so that the blade has a straight plate shape and the blade edge is along a straight line. It is formed into a possible straight blade shape and abuts it, and the blade body is fastened to the fixed blade support base with a set bolt, and the blade body is Is intended to raise the chopped mechanism in the cylinder-type agricultural cutter, characterized in that mounted in allowed curved in shape to follow the fixed blade mounting surface.

[0007] At the same time, a rotary blade to be assembled via a blade mounting metal to a main shaft penetrating the shaft center portion of the cutting chamber to the left and right,
The blade body is formed in the shape of a straight plate and the blade edge is formed in a straight blade shape along a straight line, and the blade edge is inclined with respect to the axis of the main shaft so that one end in the longitudinal direction moves forward in the rotation direction and the other end delays. The fixed blade has a fixed blade mounting surface on the fixed blade mounting surface of the fixed blade support that is fixedly installed at the entrance of the cutting chamber, and a tip mounting seat formed on the side facing the cutting chamber on the cutting edge side. The blade body is formed in contact with an arcuate surface having a tip mounting seat protruding convexly toward the cutting chamber in plan view, and the blade body is fixed to a fixed blade support base with a set bolt. In the body chip mounting seat,
A chip made of a steel material having elasticity and formed into a bendable strip having a blade edge along a straight line is abutted, and the chip is detachably fastened to a blade of a fixed blade by a set screw so as to be detachable. The present invention proposes a cutting mechanism in a cylinder type agricultural cutter, wherein the cutting mechanism is mounted so as to be curved so as to follow the arcuate surface of a chip mounting seat.

[0008]

Next, an embodiment will be described in detail with reference to the drawings. In the drawings, the same reference numerals are used for components having the same effects as those of the conventional means.

FIG. 4 is an explanatory view obtained by combining a side sectional view and a development view of a main part of a cutting mechanism of a cylinder type agricultural cutter embodying the present invention, wherein S is a main shaft, and 5 is a rotary blade. ,
Reference numeral 6 denotes a fixed blade.

Although the main shaft S is omitted in FIG. 4 described above, as shown in FIG. 1 and FIG. It is a normal one that is arranged so as to penetrate and that the left and right shaft ends are supported by the machine frame 1 via a bearing support member.

As shown in FIGS. 1 and 2, the rotary blade 5 has a blade body 5a mounted on a blade mounting seat 40 formed at the radial end of the blade mounting metal 4 mounted on the main shaft S. Although it is a normal one assembled by the set bolt 41, the blade body 5a is formed in a straight plate shape and the blade edge 50 is formed in a straight blade shape along a straight line.

As shown in the developed view of FIG. 4, the rotary blade 5 has a blade edge 50 that extends linearly at a predetermined angle α with respect to the axis S ′ of the main shaft S in plan view.
4 is attached to the blade mounting metal 4 as a tilting posture, whereby the left end 50a, which occupies the forward position in the rotational direction shown by the arrow A in FIG. Aiming at the edge of the stationary blade 6, the blade 6 sequentially comes into contact with the edge 60.

Since the rotary blade 5 is formed in the shape of a straight blade as described above, and the linearly continuous blade edge 50 is assembled so as to be inclined with respect to the axis S 'of the main shaft S, The rotation locus of the blade edge 50 is shown in a side sectional view of FIG. 4 with respect to the rotation locus Z of both end portions of the blade edge 50 at the intermediate portion 50b in the longitudinal direction of the blade edge 50. In this state, a pull of the dimension β is formed.

Therefore, in the rotary blade 5, the fixed blade 6 fixed to the machine frame 1 at the entrance 20 of the cutting chamber 2 is formed in a straight blade shape, and the blade edge 60 is linearly continuous. In this case, the left and right intermediate portions 50b are separated from the blade edge 60 of the fixed blade 6 toward the main shaft S by a distance corresponding to the above-described dimension β, and an interval corresponding to the dimension β occurs. I will come.

Thus, the fixed blade 6 is formed in a straight blade shape in which the blade body 6a has a straight plate shape and the blade edge 60 is linearly continuous, and the blade body 6a is made of a steel material having elasticity so that it can be bent. Molding. The fixed blade 6 is arranged at a position along the lower edge of the rim of the entrance 20 of the cutting chamber 2 as shown in FIGS. The blade 6a is brought into contact with the fixed blade mounting surface 7a of the fixed blade support 7, and the left and right ends of the blade 6a are set with set bolts 61.
The fixed blade 6 is fixed to the machine frame 1 in the same manner as the fixed blade 6 in the conventional cylinder type agricultural cutter by being fixed to the machine frame 1 by being fixedly attached to the fixed blade support 7. The fixed blade support 7 has a fixed blade mounting surface 7a facing the cutting chamber 2 protruding in a convex shape toward the cutting chamber 2 in a plan view as shown in FIGS. It is formed on a lonely surface. When the fixed blade mounting surface 7a is assembled in such a manner that the arcuate convex surface in a plan view is inclined with respect to the axis S 'of the main shaft S, the straight blade-shaped rotary blade 5 is assembled. It has a shape corresponding to a concave solitary surface formed by the rotation locus of each portion of the blade edge 50 of the rotary blade 5 in the longitudinal direction.

The fixed blade 6 to be mounted on the fixed blade mounting surface 7a of the fixed blade support 7 is made of an elastic steel material.
The blade body 6a has a straight plate shape, the blade edge 60 has a straight blade shape along a straight line, and is formed to be flexible. Then, the blade 6a of the fixed blade 6 is brought into contact with the fixed blade mounting surface 7a of the fixed blade support 7, and both ends of the blade 6a in the longitudinal direction are attached to both ends of the fixed blade support 7. By tightening with the set bolts 61, the blade body 6a of the fixed blade 6 is curved into a shape following the convex arcuate surface formed on the fixed blade mounting surface 7a of the fixed blade support 7; Thereby, the blade edge 6 of the fixed blade 6
In the plan view, as shown in FIG. 7, the central portion protrudes toward the cutting chamber 2 and the blade edge 50 is inclined with respect to the axis S ′ of the main shaft S, and the rotary blade 5 is assembled. Thereby, the rotation trajectory of each part in the longitudinal direction of the blade edge 50 thereof is
The blade edge 60 of the fixed blade 6 and the blade edge 50 of the rotary blade 5 and the blade of the fixed blade 6 which correspond to a state where the blade edge 50 is inclined into a concave arc shape with respect to the blade edge 60 of the fixed blade 6. Edge 60,
Each portion in the longitudinal direction is rubbed at substantially equal intervals.

In the illustrated embodiment, reference numeral 6b denotes a tip which forms the cutting edge of the blade 6a of the fixed blade 6.
a and formed integrally with the blade 6a by brazing or forging. The tip 6b forming the cutting edge may be omitted by forming the cutting edge on the blade body 6a itself.

Next, FIG. 9 shows another embodiment. This embodiment is different from the above-described embodiment in that the tip
Is detachably attached to the blade body 6a, and the tip 6b is used so that the blade edge 60 has an arc shape that protrudes toward the cutting chamber 2 in a plan view. This is an example.

That is, in this embodiment, the fixed blade support 7
The fixed blade mounting surface 7a is formed in a flat surface like the fixed blade support 7 of the conventional means. Then, the tip 6b is brought into contact with the cutting edge of the blade 6a of the fixed blade 6 which comes into contact with the fixed blade mounting surface 7a and is fixed by the set bolts 61, and is assembled by the set screws 63. The tip mounting seat 62 is formed in an arc shape protruding in a convex shape toward the cutting chamber 2 side in a plan view, and the tip 6b forming the cutting edge portion can be bent by a steel material having elasticity. The tip 6b is formed in a strip shape, and the tip 6b is brought into contact with the tip mounting seat 62, and both ends are fastened to the blade body 6a with set screws 63, 63, thereby forming a convex surface formed on the tip mounting seat 62. The tip 6b is curved in a shape following the arc surface of the tip 6b.
0 is formed in an arc shape that projects in a convex shape toward the cutting chamber 2 in a plan view.

[0020]

The embodiment of the present invention operates as follows. The rotary blade 5 to be assembled to the main shaft S via the blade mounting metal 4 is formed in a straight blade shape in which the blade body 5a is formed in a straight plate shape, and the blade edge 50 thereof is inclined with respect to the axis S ′ of the main shaft S. In order to correspond to the pulling of the intermediate portion in the longitudinal direction of the blade edge 50 of the rotary blade 5 that occurs when the rotary blade 5 is assembled as
In the first embodiment, the fixed blade 6, which is in a state of protruding toward the cutting chamber 2 in a convex shape when viewed from a plane 0, is removed from the fixed blade support 7 by removing the set bolts 61. Then, the blade body 6a becomes a straight plate-shaped straight blade. Further, in the second embodiment, the set screws 63, 63 may be removed while the blade 6a of the fixed blade 6 is set on the fixed blade support 7 or removed from the fixed blade support 7. When the strip-shaped chip 6b forming the cutting edge is removed and removed, the strip-shaped chip 6b becomes a straight plate.

Therefore, when the cutting edge of the fixed blade 6 is polished, it can be polished as a straight blade in which the blade edge 60 is straight.
After finishing the polishing, the blade 6a is fastened to the fixed blade mounting surface 7a of the fixed blade support 7 by the set bolts 61, and the blade 6a is formed in a convex shape of the fixed blade mounting surface 7a. The chip 6b, which has been set so as to follow the surface or has been polished at the cutting edge, is fastened to the chip mounting seat 62 provided on the blade body 6a with set screws 63. By setting it so as to follow the convex arcuate surface 62, the blade edge 60 of the fixed blade 6 projects in a convex arc shape toward the cutting chamber 2 toward the center in plan view. This corresponds to the milling of the intermediate portion in the longitudinal direction of the blade edge 50 of the rotary blade 5.

[0022]

As described above, in the cutting mechanism of the cylinder type agricultural cutter according to the present invention, the rotary blade 5 to be mounted on the main shaft S is formed into a straight blade shape, and the blade edge 50 thereof is connected to the main shaft S. The blade edge 60 of the fixed blade 6 is seen in a plan view in correspondence with the pulling of the intermediate portion in the longitudinal direction of the blade edge 50 of the rotary blade 5 that occurs when the blade is mounted at an angle with respect to the axis S ′. In order to make the middle portion in the longitudinal direction project toward the cutting chamber 2 side in a convex arcuate surface, the fixed blade mounting surface 7a of the fixed blade support 7 or the blade 6a of the fixed blade 6 The chip mounting seat 62 to be formed is formed in a solitary surface that projects in a convex shape toward the cutting chamber 2 side in a plan view, and the blade 6a or the chip 6b is set with the set bolts 61, 61 or the set screws. 63, the blade 6a or the tip 6b is The blade 6a is formed by curving it into a shape that follows the convex solitary surface described above.
When polishing the edge of the tip or the edge of the tip 6b,
By removing them, it becomes possible to grind them into a straight blade state, and since the fixed blade 6 can be easily assembled and set, manufacturing and assembling are easy and maintenance can be performed easily.

[Brief description of the drawings]

FIG. 1 is a partially cutaway side view of a conventional cylinder-type agricultural cutter.

FIG. 2 is a perspective view of a cylinder type cutting mechanism of the above.

FIG. 3 is an explanatory diagram of the cutting mechanism, which is composed by combining a side sectional view and a development view.

FIG. 4 is an explanatory view of the cylinder type cutting mechanism according to the present invention, which is combined with a side sectional view and a development view.

FIG. 5 is a side sectional view of a fixed blade support of the cutting mechanism.

FIG. 6 is a longitudinal sectional view of the cutting mechanism with the fixed blade of the fixed blade support set.

FIG. 7 is a partially cutaway plan view of the cutting mechanism with the fixed blade of the fixed blade support set.

FIG. 8 is a longitudinal sectional side view of a fixed blade of the cutting mechanism.

FIG. 9 is a partially broken plan view of the fixed blade support base and the fixed blade set on the fixed blade support base in another embodiment of the cutting mechanism.

FIG. 10 is a vertical sectional side view of the fixed blade of the embodiment.

[Explanation of symbols]

A: agricultural cutter, a: cutting mechanism, S: spindle, S ': axis, Z: rotation locus, α: angle, β: dimension, 1: machine frame,
2 ... cutting room, 20 ... entrance, 21 ... discharge outlet, 22 ... discharge gutter, 3 ... feed roll case, 30/31 ... feed roll,
32: supply gutter, 4: blade mounting metal, 4a: arm-shaped part, 4
0: blade mounting seat, 41: set bolt, 5: rotary blade, 5
a: Blade body, 50: Blade edge, 50a: Left end side, 50c: Right end side, 6: Fixed blade, 6a: Blade body, 60: Blade edge, 61: Set bolt, 62: Tip mounting seat, 63: Set screw , 7
... fixed blade support, 7a ... fixed blade mounting surface.

Claims (2)

(57) [Scope of request for utility model registration] 1. A rotary blade 5 to be assembled to a main shaft S passing through a shaft center portion of a cutting chamber 2 to the left and right through a blade mounting metal 4, a blade body 5a having a straight plate shape, and a blade edge 50 extending along a straight line. It is formed in a straight blade shape, and it is attached to the blade mounting metal 4 by being inclined with respect to the axis of the main shaft S so that one end in the longitudinal direction of the blade edge 50 moves forward in the rotation direction and the other end is delayed. At the inlet 20 of the cutting chamber 2, the fixed blade support 7 is formed as an arcuate surface having a fixed blade mounting surface 7a facing the cutting chamber 2 projecting convexly toward the cutting chamber 2 in plan view. The fixed blade 6 is fixed to the fixed blade mounting surface 7a of the fixed blade support base 7 by using a steel material having elasticity so that the blade body 6a has a straight plate shape and the blade edge 60 can be bent along a straight line. The blade 6a is formed into a straight blade shape and abuts, and the blade 6a thereof is fastened to the fixed blade support base 7 with set bolts 61
A cutting mechanism in a cylinder type agricultural cutter, wherein the blade body 6a is mounted with a blade edge 60 curved so as to follow the fixed blade mounting surface 7a. 2. A rotary blade 5 to be assembled via a blade mounting metal 4 to a main shaft S penetrating left and right through a shaft center portion of the cutting chamber 2, a blade body 5a has a straight plate shape, and a blade edge 50 extends along a straight line. It is formed in a straight blade shape, and it is attached to the blade mounting metal 4 by being inclined with respect to the axis of the main shaft S so that one end in the longitudinal direction of the blade edge 50 moves forward in the rotation direction and the other end is delayed. Fixed blade mounting surface 7a of fixed blade support 7 fixedly installed at the entrance 20 of cutting chamber 2
And the tip mounting seat 62 on the side facing the cutting chamber 2 on the cutting edge side.
The blade 6a of the fixed blade 6 formed with an abutment is formed on an arcuate surface of which the tip mounting seat 62 projects convexly toward the cutting chamber 2 in plan view, and abuts the blade 6a. It is fastened to the base 7 by set bolts 61, and the tip mounting seat 62 of the blade body 6a is provided with a blade edge 6 made of an elastic steel material.
0 is a chip 6b formed in a flexible strip shape along a straight line
And the tip 6b is removably fastened to the blade body 6a of the fixed blade 6 with set screws 63, 63 so that the blade edge 60
A cutting mechanism in a cylinder type agricultural cutter characterized in that it is mounted so as to be curved so as to follow the arcuate surface of the tip mounting seat 62.