JPH0560244U - Cutting mechanism of cylinder type agricultural cutter - Google Patents

Abstract

(57) [Summary] (Correction) [Purpose] Both the rotary blade and the fixed blade of the cutting mechanism of a cylinder type agricultural cutter are formed in the shape of straight blades, and the blade edges are one end side in the longitudinal direction. The blade edges are rubbed with each other while maintaining a substantially constant gap over the entire width in the longitudinal direction while gradually rubbing from each other. [Structure] A main shaft S that penetrates the axial center portion of the cutting chamber to the left and right
In addition, the rotary blade 5 to be assembled is formed by a steel plate having elasticity into a straight plate shape with a blade plate 5a and a blade edge 50 that is bendable along a straight line, and one end of the blade edge 50 in the longitudinal direction. The ends are fixed to the blade assembly seat by inclining with respect to the axis S ′ of the main shaft S such that the side advances forward in the rotational direction and the other end lags, and the middle of the rotary blade 5 in the longitudinal direction of the blade 5 a. The part is bent so as to bulge in the radial direction of the main shaft S by the extrusion of the extruding member assembled to the blade mounting metal. The fixed blade 6 fixedly mounted on the machine frame at the entrance of the cutting chamber is attached to the tool mount 7 such that its blade edge 60 is substantially parallel to the axis S ′ of the main shaft S.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to an improvement of a cutting mechanism in a cylinder-type agricultural cutter that cuts grass and straw.

[0002]

[Prior Art]

 As shown in FIG. 1, a cylinder-type agricultural cutter A is usually constructed by mounting a cutting chamber 2 formed in a drum shape on a machine frame 1 in a posture in which the axial direction of the cutting chamber 2 is in the left-right direction. The feed roll case 3 for pivotally supporting the feed rolls 30 and 31 is connected to the front face of the inlet 20 formed on the front face side (the right face side in FIG. 1) of the peripheral wall of the machine frame so as to face each other. It is mounted on 1, and the base end side of the supply gutter 32 is connected to the opening on the front side thereof, and the discharge port 21 is opened on the rear side facing the entrance 20 of the cutting chamber 2. , The base end side of the discharge gutter 22 is connected thereto. Further, a main shaft S penetrating left and right is arranged at the shaft center portion of the cutting chamber 2, and the left and right shaft ends of the main shaft S are disposed via a bearing and a bearing support member (not shown). While being mounted on the machine frame 1, one shaft end is conducted 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.

Then, as shown in FIG. 2, a blade mounting metal 4 having a pair of left and right arm-shaped portions 4a, 4a is attached to the left and right shaft ends of the main shaft S in the cutting chamber 2, and The rotary blade 5 having the blade edge 50 along the axial direction of the main spindle S is assembled with the set bolts 41, 41 to the blade assembly seats 40, 40 formed at the ends of the radial direction of the The fixed blade 6 facing the blade 5 is fixed to the machine frame 1 by arranging the fixed blade 6 at a position along the edge of the entrance 20 of the cutting chamber 2 and assembling it on the tool mount 7 provided in the machine frame 1. By this, the material to be cut which is fed into the supply gutter 32 and sent into the cutting chamber 2 by the feeding roll 30.31 is provided at the entrance 20 of the cutting chamber 2. A fixed blade 6 fixedly installed at a position along the edge and a rotary blade 5 rotating around the main shaft S in a cylindrical shape. It is cut by the cutting mechanism a and is discharged from the discharge port 21 of the cutting chamber 2.

Further, the rotary blade 5 of the cutting mechanism a is mounted on the blade mounting seats 40, 40 provided on the blade mounting metal 4 in such a manner that the blade edge 50 of the rotary blade 5 is correctly parallel to the rotation axis of the main shaft S. When assembled, the range over the entire width of the blade edge 50 in the longitudinal direction will rub against the blade edge 60 of the fixed blade 6 at a time, which will increase the horsepower required for cutting the material to be cut. Therefore, as shown in FIG. 3, the rotary blade 5 is assembled by inclining it with respect to the axis S ′ of the main shaft S so that one end side in the longitudinal direction of the blade edge 50 advances in the rotation direction and the other end side lags. As a result, the rotary blade 5 is rubbed against the fixed blade 6 sequentially from one end of the blade edge 50. At this time, if the blade 5a is formed in a straight plate shape and the blade edge 50 is continuous in a straight line, the rotation locus of each portion of the blade edge 50 in the longitudinal direction is determined by the longitudinal direction of the blade edge 50. The rotary blade 5 is usually formed as shown in FIG. 2 because it has a knurled shape that gradually becomes smaller in diameter toward the central portion of the direction, and the friction between the fixed blade 6 and the blade edge 60 becomes unsatisfactory. The blade body 5a is formed into a twisted twisted blade.

[0005]

[Problems to be solved by the device]

 Since the cutting mechanism a in the conventional cylinder type agricultural cutter configured as described above forms the rotary blade 5 into a twisted blade, it is troublesome to manufacture the rotary blade 5, and moreover, the rotary blade 5 is However, there is a problem in that the operation of assembling and setting the fixed blade 6 so that the blade edge 60 of the fixed blade 6 rotates at a predetermined interval while rotating and the polishing means are troublesome.

The present invention has been made in order to solve the problem that has occurred in the cutting mechanism of the conventional cylinder type agricultural cutter, in which the blade of the rotary blade is a straight plate shape. The blade edge of the rotary blade and the blade edge of the fixed blade are aligned in the longitudinal direction with the blade edge of the rotary blade and the blade edge of the fixed blade sequentially rubbing from one end side in the longitudinal direction. It is an object of the present invention to provide a new means for facilitating the manufacturing and assembling of a cutting mechanism in which the required horsepower is reduced by allowing the width to keep a certain constant gap and to perform the mutual rubbing.

[0007]

[Means for Solving the Problems]

 Further, in the present invention, as a means for achieving the above-mentioned object, a rotary blade to be assembled through a tool attachment metal to a main shaft penetrating left and right through a shaft center portion of a cutting chamber is provided with elasticity. The blade is made of steel and has a straight plate shape, and the blade edge is formed into a straight blade shape that can be bent along a straight line, and one end side of the blade edge in the longitudinal direction advances forward in the rotational direction and the other end lags behind. The blade is attached to the blade mounting seat at the outer end of the blade mounting metal with the set bolts, and the intermediate portion in the longitudinal direction of the blade of the rotary blade is fixed to the blade mounting metal. The fixed blade is fixed to the machine frame via the blade mount at the entrance of the cutting chamber, and the blade is straight plate. The blade edge is formed in a straight blade shape along a straight line, and the blade edge is substantially the same as the axis of the main shaft. As a posture to move, we proposed a cutting mechanism in a cylinder-type agricultural cutter that is mounted on a tool mount, and also installed a tool mounting metal on a spindle that penetrates the shaft center of the cutting chamber to the left and right. The rotary blade to be attached is made of elastic steel and has a straight plate-like shape with a straight edge that can be bent along a straight line, and the blade edge has a posture that is substantially parallel to the axis of the spindle. Both ends are fixed to the blade assembly seat at the outer end of the blade mounting metal with set bolts, and the intermediate part in the longitudinal direction of the blade of the rotary blade is pulled by the towing member attached to the blade mounting metal. The blade is curved so that it is recessed toward the main shaft, and the fixed blade that is fixedly installed on the machine frame at the entrance of the cutting chamber via the tool mount is a straight blade and the blade edge is straight. It is formed in a blade shape, and one end side of the blade edge in the longitudinal direction is in front of the rotary blade in the rotation direction. Is intended to raise the switching 截 mechanism in the cylinder-type agricultural cutter comprising assembling a tool mount as the posture of inclined obliquely relative to the axial line of the main shaft so as to see the other end is delayed.

[0008]

【Example】

 Next, embodiments will be described in detail with reference to the drawings. The same reference numerals are used for the constituent members having the same effects as those of the conventional means.

FIG. 4 is an explanatory view in which a side sectional view and a development view of a main part of a cutting mechanism of a cylinder-type agricultural cutter according to the present invention are combined with each other, in which S is a main shaft and 5 is a rotary blade. , 6 are fixed blades.

Although the main shaft S is omitted in FIG. 4 described above, as shown in FIGS. 1 and 2 described above, the shaft center portion of the cutting chamber 2 mounted on the machine frame 1 is left and right. It is a normal type in which the left and right shaft ends are axially 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 assembly seat 40 in which the blade body 5 a is formed at the radial end of the blade mounting metal 4 mounted on the spindle S. The blade 5a is made of a steel material having elasticity and is formed in a straight plate shape with a blade edge 50 that can be bent along a straight line.

The fixed blade 6 has a blade body 6 a formed in a straight plate shape and a blade edge 60 formed in a straight blade shape which is continuous in a straight line. Then, both end portions of the blade body 6a thereof are brought into contact with a blade mounting base 7 fixedly installed on the machine frame 1 at the entrance 20 portion of the cutting chamber 2 and assembled and fixed by the set bolt 61. Then, it is fixed to the machine frame 1 by arranging it at a position along the lower edge of the inlet 20 of the cutting chamber 2 and it is the same as a conventionally known one, and the blade edge 60 of the blade edge 60 is the axis S ′ of the main shaft S. It is fixed to the tool mount 7 in a posture substantially parallel to.

Therefore, in the rotary blade 5, as shown in the development view of FIG. 4, the blade edge 50 that continues in a straight line has a predetermined shape with respect to the axis S ′ of the main shaft S in a plan view. The blade edge of the fixed blade 6 is set on the blade mount 7 such that the blade edge 60 is set substantially parallel to the axis S ′ of the main shaft S so that the blade edge 4 is assembled in a posture of inclining at an angle α. With respect to 60, the left end 50a, which occupies the forward position in the rotational direction shown by the arrow A in FIG. 4, is rubbed toward the right end 50c, which is located rearward.

The rotary blade 5 is formed in a straight blade shape as described above, and the blade edge 50 which is continuous in a straight line is assembled in a state of being inclined with respect to the axis S ′ of the main shaft S. The rotation locus of the edge 50 has a state in which a pull having a diameter smaller than that of the rotation locus Z of both end portions of the blade edge 50 is formed at an intermediate portion in the longitudinal direction of the blade edge 50.

Therefore, the rotary blade 5 is attached to the blade edge 60 of the fixed blade 6 which is fixedly installed at the entrance 20 portion of the cutting chamber 2 with the blade edge 60 parallel to the axis S ′ of the main shaft S. On the other hand, the left and right intermediate portions are separated from the main axis S by a distance corresponding to the above-mentioned pulling dimension, and a space corresponding to this pulling dimension is generated between the fixed blade 6 and the blade edge 60. ..

The extruding member 8 is inclined in the rotational direction with respect to the axis S ′ of the main shaft S formed in the shape of a straight blade and is set in the blade attachment metal 4 in the middle of the blade edge 50 of the rotary blade 5 in the longitudinal direction. This is to eliminate the pulling of the rotation trajectory that occurs in the part.

That is, as shown in FIGS. 5 and 6, the push-out member 8 is assembled and fixed by setting bolts 41, 41 at both end portions of the blade 5a of the rotary blade 5 of the blade mounting metal 4. Lock the screw rods 80 and 80, which are screwed so as to advance and retreat in the radial direction of the main shaft S, at a position intermediate between the right and left blade assembly seats 40 and 40, and the screwing position thereof. Lock nuts 81, 81, and by screwing the screw rods 80, 80, the tip side is projected to the rotary blade support base surface 4b of the blade mounting metal 4, and the blade of the rotary blade 5 5a is extruded in the radial direction of the main axis S by extruding an intermediate part in the longitudinal direction of the spindle 5a, and the intermediate part of the blade 5a is bent in the radial direction of the main axis S. The rotational trajectory of the part is the blade when viewed from the axial direction of the main axis S. When the rotation loci of both end portions of the edge 50 are aligned with each other, the lock nuts 81, 81 to be screwed into the screw rods 80, 80 are tightened to hold the above-mentioned state.

At this time, the dimension β of pushing out the intermediate portion of the blade edge 50 due to the bending of the blade 5a may be about 1 mm when the inclination angle α of the fixed blade 6 is within 10 degrees.

The extruding member 8 is curved so as to extrude an intermediate portion in the longitudinal direction of the blade 5a of the rotary blade 5 assembled to the blade mounting metal 4 in the radial direction of the main shaft S and to project in that direction. It is only necessary that the base plate whose outer end face is formed into an arc-shaped curved surface is attached to the front end side of the screw rods 80, 80 in the above-described embodiment, and the base plate 4 is screwed into the tool mounting metal 4. The base plate may be appropriately configured such that the base is pushed out in the radial direction of the main shaft S by the rotation of the screw rods 80.

In this embodiment, the rotary blade 5 formed in the shape of a straight blade is assembled by inclining it in the rotational direction with respect to the axis S ′ of the main shaft S in the longitudinal direction of the blade edge 50 of the rotary blade 5. The fixed blade 6 is separated from the edge 60 of the fixed blade 6 formed by pulling on the rotation locus of the intermediate portion of the rotary blade 5 formed in the shape of a straight blade on the blade mounting metal 4 to set bolts 4 1, 41. After being set by, the flexibility is imparted to the blade body 5a of the rotary blade 5, so that the blade body 5a can be bent by being extruded by the extruding member 8 so that the blade body 5a disappears. As a result, the rotary blade 5 itself can be easily manufactured and assembled, so that a cutting mechanism can be obtained that reduces the required horsepower and is easy to manufacture and assemble.

Next, FIGS. 7 to 9 show another embodiment. In this embodiment, the rotary blade 5 mounted on the main shaft S via the blade mounting member 4 is assembled such that the blade edge 50 of the rotary blade 5 is parallel to the axis S'of the main shaft S. 5, a fixed blade 6 fixedly installed on the machine frame 1 at a position of the inlet 20 of the cutting chamber 2 via a tool mount 7 with a blade edge 60 of the fixed blade 6 with respect to the axis S ′ of the spindle S. When the rotary blade 5 and the fixed blade 6 are slid in the rotation direction of the rotary blade 5 and fixedly installed, the rotary blade 5 and the fixed blade 6 are rubbed with each other to cut the material to be cut. This is an example in which the edge 50 is applied to the cutting mechanism a of a form in which the edge 50 sequentially rubs against the blade edge 60 of the fixed blade 6 from one end side in the longitudinal direction thereof to the other end side.

In this embodiment, the rotary blade 5 has a blade body 5 a formed in a straight plate shape and a blade edge 50 formed in a straight blade shape, and the blade edge 50 is formed as an axis S ′ of the main shaft S. As the postures are parallel to each other, since they are assembled to the blade assembly seat 40 of the blade mounting metal 4 mounted on the spindle S by the set bolt 41, the rotation locus of the blade edge 50 of the blade assembly seat 40 is as viewed in the axial direction of the spindle S. The rotational loci of the portion located at the end of the blade edge 50 in the longitudinal direction and the portion located in the middle are aligned.

However, in the fixed blade 6, the blade body 6a is formed in a straight plate shape and the blade edge 60 is formed in a straight blade shape, and the blade edge 60 is rotated with respect to the axis S ′ of the main shaft S. Since the blade 5 is tilted in the direction of rotation and assembled to the tool mount 7 with the set bolts 61, 61, in the assembled state, the blade edge 60 of the blade 5 is located at the intermediate portion in the longitudinal direction in plan view. It becomes a form that is projected in an arc shape to the side.

Therefore, the rotary blade 5 set on the blade mounting metal 4 is blade-aligned so that the end of the blade edge 50 in the longitudinal direction of the rotary blade 5 rubs against the end of the blade edge 60 of the fixed blade 6. When the adjustment is performed, the intermediate portion in the longitudinal direction of the blade edge 50 of the rotary blade 5 comes to mesh with the intermediate portion in the longitudinal direction of the blade edge 60 of the fixed blade 6 which is projected in an arc shape on the main shaft S side. come.

The pulling member 9 is for eliminating this meshing. That is, as shown in FIG. 8 and FIG. 9, the drafting member 9 is assembled on both ends of the blade 5a of the rotary blade 5 of the blade mounting metal 4 with the set bolts 41, and is fixed to the left and right. The blade rods 90, 90 are screwed into a portion located in the middle of the assembly seats 40, 40 so as to advance and retreat in the radial direction of the main shaft S by rotation, and the screw rods 90, 90 are screwed as desired. It is composed of a lock nut 91, 91 that locks in the retracted position, and its screw rod 90, 90 is inserted into a through hole 51, 51 that is opened at an intermediate portion of the blade blade 5a of the rotary blade 5 in the longitudinal direction to attach the blade. It is screwed onto the gold 4, and in that state, the screw rods 90, 90 are screwed into the blade mounting gold 4 so that the intermediate portion in the longitudinal direction of the blade 5a of the rotary blade 5 becomes the axis S of the spindle S. 'Toward the blade 5a of the rotary blade 5 The intermediate portion is curved so as to be pulled back toward the main axis S so that the blade edge 50 follows the shape of the blade edge 60 of the fixed blade 6 in a plan view, and when it is bent to a desired shape, it is locked by the lock nut 91. By doing so, it is possible to keep the curved state.

At this time, the dimension β for pulling the blade 5a in order to bend the blade 5a of the rotary blade 5 is the same as in the above-described embodiment if the inclination angle α of the rotary blade 5 is within 10 degrees. Similarly, about 1 mm is enough.

In addition, the blade mounting member 4 has a structure in which the blade 5 a of the rotary blade 5 is pulled by the pulling member 9 toward the main shaft S 2 to bend the blade mounting metal 4, so that the rotary blade 5 can be accurately moved. Of the table surface 4b on the outer end side where the blade 5a of the blade overlaps with the intermediate portion of the blade 5a of the rotary blade 5 by using the set bolts 41 at both ends of the blade 5a of the rotary blade 5. It is formed so as to be further lower in the radial direction of the main shaft S than the left and right blade assembly seats 40, 40 that are fixed. As a result, when the blade body 5a of the rotary blade 5 is assembled with the set bolts 41, 41, it is between the intermediate portion in the longitudinal direction of the blade body 5a and the base surface 4b on the outer end side of the blade mounting metal 4. The gap w is formed in the gap w, and the bending by the pulling of the intermediate portion of the blade 5a by the drafting member 9 is performed in this gap w.

In this embodiment, the fixed blade 6 is set on the tool mount 7 such that the blade edge 60 of the fixed blade 6 is inclined with respect to the axis of the main shaft S, so that the intermediate portion of the blade edge 60 is seen in a plan view. At the cutting chamber 2 side so that the blade edge 50 is parallel to the axis S ′ of the main shaft S and meshes with the blade edge 50 of the rotary blade 5 assembled to the blade mounting metal 4. This is prevented by bending the blade body 5a of the rotary blade 5 assembled to the blade mounting metal 4 by pulling the pulling member 9, so that the rotary blade 5 and the fixed blade 6 are formed in a straight blade shape. The cutting mechanism a can be easily manufactured and assembled.

Also in this embodiment, the pulling member 9 connects the holder for holding the intermediate portion of the blade 5a of the rotary blade 5 to the screw rod 90/90 screwed to the blade mounting metal 4, The holder may be suitably constructed such that it is pulled toward the main shaft S by the screw rods 90, 90.

[0030]

[Effect of the device]

 As described above, in the cutting mechanism of the cylinder type agricultural cutter according to the present invention, both the rotary blade 5 and the fixed blade 6 are formed in the shape of straight blades, and they are arranged from one end side in the longitudinal direction of the blade edges 50 and 60. Since the blade edge 50 of the rotary blade 5 and the blade edge 60 of the fixed blade 6 are rubbed with each other while maintaining a substantially constant gap over the entire width, the required horsepower is increased. It is possible to simplify the manufacturing and assembling of the cutting mechanism in the reduced size.

[Brief description of drawings]

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

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

FIG. 3 is an explanatory view in which a side sectional view and a developed view of the above cutting mechanism are combined.

FIG. 4 is an explanatory view showing a combination of a side sectional view and a development view of a cutting mechanism of a cylinder type agricultural cutter according to the present invention.

FIG. 5 is a partially cutaway front view of the assembly part of the rotary blade of the above cutting mechanism.

FIG. 6 is a partially cutaway side view of the assembly portion of the above.

FIG. 7 is an explanatory view synthesized from a side sectional view and a development view of another embodiment of the cutting mechanism in the cylinder type agricultural cutter according to the present invention.

FIG. 8 is a partially cutaway front view of the assembly portion of the rotary blade of the cutting mechanism of the above embodiment.

FIG. 9 is a side view in which the assembling portion is partially broken.

[Explanation of symbols]

A ... Agricultural cutter, a ... Cutting mechanism, S ... Spindle, S '... Shaft core line, Z ... Rotation locus, 1 ... Machine frame, 2 ... Cutting chamber, 20 ... Inlet, 21 ... Discharge port, 22 ... Discharge gutter. 3 ... Sending roll case, 30/31 ... Sending roll, 32 ... Supply gutter, 4 ... Blade mounting metal, 4a ... Arm-shaped part, 4b ... Table surface, 40 ... Blade mounting seat, 41 ... Set bolt, 5 … Rotating blade, 5a… blade
50 ... Blade edge, 50a ... Left end side, 50c ... Right end side, 51 ...
Through hole, 6 ... Fixed blade, 6a ... Blade, 60 ... Blade edge, 61 ... Set bolt, 7 ... Blade support, 7a ... Table surface, 8 ... Extruding member, 80 ... Screw rod, 81 ... Lock nut, 9 ... Towing member, 90 ... Screw rod, 91 ... Lock nut, w ... Gap.

Claims (2)

[Scope of utility model registration request] 1. A rotary blade 5 to be assembled to a main shaft S penetrating left and right through a shaft center portion of a cutting chamber 2 via a blade mounting metal 4, and a blade 5a made of an elastic steel material having a straight plate shape. The edge 50 is formed as a straight blade that is bendable along a straight line, and the edge 5
0 is inclined with respect to the axial center line S ′ of the main shaft S so that one end side in the longitudinal direction advances toward the front in the rotational direction and the other end side lags, and both ends thereof are the blade assembly seats 40, 40 at the outer ends of the blade mounting metal 4. To the main shaft S in the radial direction by pushing out the extruding member 8 assembled to the blade mounting metal 4 at the intermediate portion of the rotary blade 5 in the longitudinal direction of the blade 5a. A fixed blade 6 which is bent so as to come out and is fixedly installed on the machine frame 1 at a position of an entrance 20 of the cutting chamber 2 via a tool mount 7.
The blade body 6a is formed in a straight plate shape and the blade edge 60 is formed in a straight blade shape along a straight line, and the blade edge 60 is assembled to the tool mount 7 in a posture in which the blade edge 60 is substantially parallel to the axis S'of the main shaft S. A cutting mechanism for the attached cylinder type agricultural cutter. 2. A rotary blade 5 to be mounted on a main shaft S penetrating left and right through a shaft core portion of a cutting chamber 2 via a blade mounting metal 4, and a blade 5a made of an elastic steel material having a straight plate shape. The edge 50 is formed as a straight blade that is bendable along a straight line, and the edge 5
With the position 0 being substantially parallel to the axis S ′ of the main shaft S, both ends are fixed to the blade assembly seats 40, 40 at the outer ends of the blade mounting metal 4 with set bolts 41, 41, and the rotary blade 5 The middle portion of the blade body 5a in the longitudinal direction is bent so as to be recessed toward the main shaft S by the pulling of the pulling member 9 assembled to the blade mounting metal 4, and the blade mounting base is provided at the inlet 20 portion of the cutting chamber 2. The fixed blade 6 fixedly mounted on the machine frame 1 via
a is a straight plate shape and the blade edge 60 is formed in a straight blade shape along a straight line,
It is mounted on the tool mount 7 in such a manner that one end side of the blade edge 60 in the longitudinal direction thereof advances toward the front in the rotational direction of the rotary blade 5 and the other end side thereof lags with respect to the axis S ′ of the main shaft S. Cutting mechanism for cylinder type agricultural cutter.