JPH04330224A - Blade-fixing table of cutting mechanism of cylinder-type farm cutter - Google Patents

Abstract

PURPOSE:To form a fixing table with a simple machining work by fixing a straight rotary blade in a specific state to a blade-fixing table of a cutting mechanism of a cylinder-type farm cutter having parallelly arranged right and left blade-fixing tools continuously integrated with a common boss. CONSTITUTION:The protruded length L1 of a pair of parallelly arranged right and left blade-fixing tools 3, 3 from one boss 30 is made to be shorter than the protrusion length L1 from the other boss 30. The blade-fixing tool 3 of the shorter side is shifted forward in the rotational direction. A flat board 3a is extended between each outer edge of the blade-fixing tools 3,3 in such a manner as to incline downward from right or left side toward the other side by front-view and to protrude the declined side forward in rotational direction by top-view. Fixing bed 4 for the fixing of a rotary blade is formed on the outer surface of the board 3a in a state that the sheet faces 4a of the fixing beds are placed on one flat plane.

Description

[Detailed description of the invention]

0001

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a blade mount for assembling and mounting a rotary blade to a main shaft in a cylinder type cutting mechanism for an agricultural cutter for cutting grass, straw culms, etc.

More specifically, the cylinder-type cutting mechanism that is the object of the present invention has a rotary blade attached to the main shaft via a blade mount, and the blade is formed into a flat straight plate. This is a cutting mechanism in which a blade is assembled with the blade edge inclined with respect to the axial direction of the main shaft when viewed from the front.

0003

[Prior Art] The cylinder type cutting mechanism of the above-mentioned form is
This is known from the prior art as disclosed in Japanese Patent Application Laid-open No. 114894/1983.

As shown in FIG. 1, this means rotates with respect to a main shaft S mounted on the machine frame 1 and arranged so as to pass through the axial center of the cutting chamber 2 mounted on the machine frame 1. To assemble the blade a, as shown in FIG. The blade mounts 3, 3 are arranged in a pair, and mounting seats 4, 4 for assembling the rotary blades are formed at the outer ends of the blades 3, 3 in a radial direction centered on the main axis S, respectively. A rotary blade a having a straight plate-shaped blade is suspended over these with its blade edge inclined with respect to the axis W of the main shaft S when seen from the front, and assembled with set bolts 40. do.

[0005] At this time, the intermediate portion in the longitudinal direction of the blade edge of the rotary blade a has a rotation radius around the axis W of the main shaft S that is larger than the left and right end portions of the blade edge of the rotary blade a. It rotates with a shortened rotational trajectory, and moves away from the blade edge of the fixed blade b fixedly mounted at the entrance 20 of the cutting chamber 2 to the side closer to the main axis S, and the length of the blade edge of the fixed blade b Fixed blade b makes the blade alignment with the intermediate part of the direction worse,
As shown in Fig. 3, the blade edge is the axis W of the main shaft S.
On the other hand, the rotary blade a is assembled and mounted on the machine frame 1 in a state where it is tilted at an inclination angle β that substantially corresponds to the inclination angle α of the rotary blade a in a direction opposite to the inclination direction of the rotary blade a.

[0006]

[Problem to be solved by the invention] The above-mentioned conventional means are as follows:
FIG. 4 shows assembly seats 4, 4 for assembling rotary blades, which are installed at the outer ends of a pair of left and right blade mounts 3, 3 that are assembled and installed on both left and right ends of the main shaft S. Thus, when viewed from the direction of the axis W of the main shaft S, they are each formed as a pedestal along different planes.

[0007] For this reason, the left and right blade mounts 3, 3 to be assembled and attached to the main shaft S are formed so that their boss portions 30, 30 are integrally continuous to form one rigid blade mount. By doing so, when forming the assembly seats 4, 4 on the outer ends of the respective blade mounts 3, 3 so as to serve as pedestals for supporting both ends of the blade of the straight-edged rotary blade a. , it is necessary to finish each of these assembly seats 4, 4 separately, which creates a troublesome manufacturing process.

Moreover, a base plate for forming the assembly seat 4 is mounted on the outer end side of the left and right knife mounts 3, which are integrally continuous with the boss portion 30. It constitutes an even stronger blade mount, and the rotary blade a
If an attempt is made to form the mounting seats 4, 4 in the shape of a long platform that supports the entire blade of the blade, a problem arises in that the machining for forming the mounting seats 4, 4 becomes even more difficult.

The present invention has been made in order to solve these problems occurring in the conventional means.
The left and right cutter mounts 3, 3 attached to the main shaft S passing through the axial center of the machine are attached to one common boss part 30 so as to be continuous as one body, and a base plate is integrated between their outer ends. A rotary blade a with a blade shaped like a straight plate is formed on the upper surface side (outer surface side) of the base plate by continuously moving it across the rack to form a blade mount that constitutes one rigid frame. The purpose of the present invention is to provide a new means by which assembly seats 4, 4 for assembling the spindle in an inclined state with respect to the axis W of the main shaft S in a front view can be formed by simple machining. do.

0010

[Means for Solving the Problems] In the present invention, as a means for achieving the above-mentioned object, left and right knife mounts are provided which protrude integrally and continuously in the radial direction from the boss portion fitted to the main shaft. is formed so that the length of protrusion from the boss of one of the blade mounts is shorter than the length of the protrusion from the boss of the other blade mount, and the blade mount of the side with the shorter protrusion length is A flat base plate is placed between the outer ends of the long and short blade mounts, which are deviated forward in the direction of rotation, and tilted downward from one side of the left and right to the other when viewed from the front. A cone-shaped cutter mount is formed with a large diameter on one side of the left and right sides and a small diameter on the other side, and a rotary blade assembly is installed on the outer surface of the base plate at the outer end of the mount. The seat surface is a flat base parallel to the tangential direction of the circumferential surface of the main shaft when viewed from the side, and is inclined downwardly from one side of the left and right to the other side when viewed from the front, and the downwardly inclined side is flat. The present invention proposes a blade mount in a cutting mechanism of a cylinder-type agricultural cutter, which is characterized in that it is shaped so as to protrude forward in the rotational direction when viewed.

[0011]

[Example] Next, an example will be described in detail with reference to the drawings. Note that the same reference numerals in the drawings are used for structural members having the same effect as those of the conventional means.

FIG. 5 is a partially cutaway side view of a cylinder-type agricultural cutter A in which the present invention can be implemented.
1 is the machine frame, 2 is the cutting chamber mounted on the machine frame 1, S is the main shaft, K
4 is a blade mount for assembling a rotary blade attached to a portion of the main shaft S located in the cutting chamber 2, 4 is an assembly seat provided at the outer end of the blade mount K, and a is a blade mount. Assembly seat 4 on the outer end of K
b shows a fixed blade fixedly attached to the machine frame 1 located at the entrance of the cutting chamber 2.

The machine frame 1 is a stationary type that can be installed at a desired location, and is provided with supporting legs 1a.

The cutting chamber 2 is normally formed in the shape of a drum with its axis extending in the left-right direction, and an inlet 20 is open on the front side (the right side in the figure). A feed roll chamber 2a in which a pair of vertically opposing feed rolls 21 and 22 are stored and mounted is connected to the feed roll chamber 2.
The base end of the supply gutter 2b is connected to the open opening on the front side of a. Further, a discharge port is open on the rear side of the cutting chamber 2, and the base end of the discharge gutter 2c is connected to the discharge port.

The main shaft S is arranged so as to pass through the shaft center portion of the cutting chamber 2 from side to side, and the left and right shaft ends are assembled to the left and right sides of the machine frame 1. 10 (one of which is not clearly shown in the drawing) is horizontally supported on the machine frame 1 by being supported via a bearing, and an input pulley (not shown) provided at one end of the shaft. This is a normal type that is driven and rotated by being transmitted to the output shaft of the prime mover through the motor.

As shown in FIG. 6, the blade mount K is
A pair of left and right blade mounts 3 are attached via boss portions 30 to the left and right sides of the portion of the main shaft S located in the cutting chamber 2, and the boss portions 30 are continuous into one. By forming the pair of blade mounts 3, 3 to protrude in the radial direction from both ends of the single boss portion 30, the pair of blade mounts 3, 3 are formed so as to be continuous as one body, and the blades are connected to each other. Between each outer end of the mounting brackets 3 and 3, these blade mounting brackets 3
・The left and right blade mounts 3 are connected to the boss part 30 on the proximal end and the base plate 3 on the outer end by spanning the base plate 3a that is integrally continuous with the base plate 3.
It is of a form in which an integral rigid body frame is assembled by connecting the two parts by a and a, and this structure is the same as that of the conventional cutter mount.

However, the left and right blade mounts 3 are provided so as to protrude in the radial direction from the axially outer end of the boss portion 30.
3, as shown in FIG. 6 above, the protrusion length L1 from the boss portion 30 of the cutter mount 3 located on one side of the left and right is longer than the protrusion length L1 from the boss portion 30 of the cutter mount 3 located on the other side. Projection length L
2, and these blade mounts 3.
The base plate 3a, which is provided in a state of spanning between the respective outer ends of the blades 3, is lowered from the outer end of the blade mount 3 having a long protruding length toward the outer end of the blade mount 3 having a short protruding length, when viewed from the front. The boss portion 30 is installed in an oblique position with respect to the axis line W of the main shaft S which is coaxial with the axis line W of the main shaft S, so that the overall shape when viewed from the front can be changed from left to right. It is formed into a cone shape with a large diameter on one side and a small diameter on the other side.

Furthermore, as shown in FIGS. 7 and 8, the base plate 3a, which is provided so as to span between the outer ends of the left and right knife mounts 3, 3, has a protruding length in a plan view. The side of the shortened blade mount 3 is formed to protrude forward in the rotational direction (in the direction of the arrow in FIGS. 7 and 8) with respect to the axis of the boss portion 30.

An assembly seat 4 for assembling the rotary blade is formed on the front half side in the rotational direction of the upper surface (outer surface) of this base plate 3a, and the seat surface 4a for supporting the rotary blade a is is a flat table surface along the tangential direction of an imaginary circle centered on the axis of the boss portion 30 when viewed from the side, and as shown in FIG. As shown in FIGS. 7 and 8, the lower side is formed so as to protrude forward in the direction of rotation. And the seat surface 4a
Bolt holes 41 are formed in which the rotary blade a to be placed there is set using set bolts 40.

Further, on the upper surface of the base plate 3a, at a portion behind the seat surface 4a in the rotation direction, there is a blade edge of a rotary blade a placed on the seat surface 4a and set by set bolts 40. A rising wall 43 is provided on which adjustment bolts 42 are screwed together to adjust the rotation locus of the fixed blade b to move forward or backward relative to the edge of the fixed blade b.

The aforementioned assembly seat 4 for assembling the rotary blade a
The seat surface 4a has a concave portion in the middle between the left and right sides, and the rotary blade a
Both end portions that support the left and right end portions of the seat surface 4a are formed to be higher in a stepped manner, but both end portions of the seat surface 4a, which serve as the substantial support surface, are aligned as shown in FIGS. 6 and 7. It is formed into a plane along two flat surfaces.

[0022] This allows the seat surface 4a, which supports the straight rotary blade a whose blade body is formed into a straight plate shape, to be aligned with the tangent of an imaginary circle centered on the axis of the boss portion 30 or the main shaft S. Even if it is formed into a plane along two flat surfaces, the sheet surface 4
If a is inclined left and right as described above, and the downwardly inclined side is formed so as to advance forward in the direction of rotation, when the rotary blade a is set there as shown in Fig. 9, the rotary blade a
Both the left and right ends of the blade edge will be on the same rotation locus Z when viewed from the side, and the seat surface 4a will be formed in this way and the rotary blade a will be set. For example, the configuration of the assembly seat 4 for mounting the straight-edged rotary blade a with its blade edge inclined with respect to the axis of the boss portion 30, which is the axis of rotation, can be obtained by extremely simple machining. This is based on what was found.

In the above-described embodiment, the rotary blade a to be set on the assembly seat 4 has a bolt hole 50 for inserting the set bolt 40 in the blade in the front and back direction (rotation direction of the blade mount K). The rotary blade a
I am trying to set it directly on the assembly seat 4,
In some cases, the rotary blade a is assembled to a holder that can be set in a cassette shape on the assembly seat 4, and then indirectly assembled to the assembly seat 4 via this holder.

FIGS. 10 and 11 show an example in which the rotary blade a is assembled to a holding stand 6, and this holding stand 6 is set in the assembly seat 4 in the form of a cassette.

As shown in FIG. 10, the holding base 6 includes a base plate 6a having a fitting recess 60 on the front end side into which the blade of the rotary blade a is fitted, and a base plate 6a on the front half side of the upper surface of the base plate 6a. Cover it,
It consists of a presser plate 6b that presses down the blade of the rotary blade a fitted in the fitting recess 60, and the presser plate 6b holds the set screws 62, which are inserted into the through holes 61 provided therein, on the base plate 6a.
By screwing into the screw holes 63 opened in the base plate 6a, it is integrally closed with the base plate 6a, and at the same time, the blade of the rotary blade a is held between the holding plate 6b and the base plate 6a. It is in a state where it is integrally held.

[0026] The base plate 6a also has the above-mentioned knife mount K.
When the base plate 6a is placed on the seat surface 4a of the assembly seat 4, a bolt insertion hole for inserting the set bolt 40 is provided in a portion corresponding to the bolt hole 41 opened in the seat surface 4a. Similar to the bolt holes 50 formed in the blade of the rotary blade a of the above-described embodiment, the bolt holes 64 and 64 are formed in the shape of elongated holes that are long in the front-rear direction (rotation direction).

Then, with the rotary blade a held as shown in FIG. 12, the holding stand 6 is placed on the seat surface 4a of the assembly seat 4 and closed with the set bolts 40. The rotary blade a is assembled at
By loosening the tightening of the set bolts 40 and rotating the adjustment bolts 42, the rotating locus Z of the blade edge of the rotating blade a moves back and forth with respect to the blade edge of the fixed blade b. However, the blade alignment is adjusted in the same manner as in the previous embodiment.

This embodiment is suitable for the case where the rotary blade a is formed of a thin steel plate into a thin strip shape that can be freely bent.

Next, FIGS. 13 and 14 show, as described above,
Fixed blade b that corresponds to the rotating blade a that is assembled to the blade mount K
The assembled state is shown.

As shown in FIG. 13, the fixed blade b has an inclination angle with respect to the axis of the main shaft S when viewed from the front so that its blade edge is higher at one end of the left and right sides and lower at the other end. Assemble it to the machine frame 1 in the correct condition. The inclination angle of the blade edge of the fixed blade b when viewed from the front approximately corresponds to the inclination angle of the blade edge of the rotary blade a, which is assembled to the main shaft S via the blade mount K, with respect to the axis of the main shaft S. The direction of inclination is opposite to the direction of inclination of the blade edge of rotary blade a.

The fixed blade b in this example is shown in FIG.
Similarly to the rotary blade a in the embodiment shown in FIG. By assembling the holding frame 7 to the mounting bases 8 provided on the machine frame 1 with set bolts 80, the machine frame 1
It is mounted on a thick steel plate to form a thick flat straight blade like a conventional fixed blade, and both left and right ends of the blade are attached to a mounting base using set bolts 80. 8.8
It is best to attach it directly to the Of course, in this case as well, the blade edge is assembled so that it is inclined in the opposite direction at an inclination angle that substantially corresponds to the inclination angle of the blade edge of the rotary blade a.

[0032]

Effects of the Invention As explained above, the blade mount K of the cylinder-type agricultural cutter according to the present invention has a pair of blade mounts 3 parallel to each other on the left and right sides of the blade mount K, which are arranged on one side of the left and right sides. Projection length L1 of gold 3 from boss portion 30
The protrusion length L2 of the cutter mount 3' located on the other side from the boss part 30 is made longer, so that the cutter mount 3 with a longer protrusion length from the boss part 30 and the cutter mount 3' with a shorter protrusion are made. The blade mounts 3 on the side with the shorter protruding length are arranged in parallel on the left and right, and the blade mounts 3 on the side with the shorter protrusion length are offset forward in the rotational direction, and between the outer ends of the longer and shorter blade mounts 3 and 3'. , a flat platform 3a is hung diagonally across the board so that it slopes downward from one side of the left and right to the other when viewed from the front, so that the entire cone has a large diameter on one side of the left and right and a small diameter on the other side. On the outer surface of the base plate 3a on the outer end side thereof, there is an assembly seat 4 for assembling the rotary blade.
The seat surface 4a thereof is a flat table surface parallel to the tangential direction of the circumferential surface of the main shaft S when viewed from the side, and is inclined downwardly from one side of the left and right to the other side when viewed from the front, and the downwardly inclined side rotates when viewed from above. Since it is formed in a shape that protrudes forward in the direction, the right and left blade mounts 3, 3 are connected to the blade mount K where the straight blade rotary blade a is connected to the axis of the main shaft S when viewed from the front. When forming the assembly seat 4 for assembly so as to be inclined with respect to the core line W, the seat surface 4a of the assembly seat 4 is aligned with the outer surface of the flat base plate 3a, and one plane is formed. Since it is sufficient to form the mounting seat 4 for mounting the rotary blade on the blade mounting base K, which is formed to constitute one rigid frame, Processing becomes significantly easier.

[Brief explanation 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 cutting mechanism same as above.

FIG. 3 is an exploded explanatory diagram of the cutting mechanism.

FIG. 4 is a partially cutaway side view of the same as above.

FIG. 5 is a partially cutaway side view of a cylinder-type agricultural cutter in which the present invention can be implemented.

FIG. 6 is a front view of the blade mount same as above.

FIG. 7 is a side view of the blade mount shown above.

FIG. 8 is a plan view of the blade mount shown above.

FIG. 9 is an explanatory diagram of the operation of the blade mount.

FIG. 10 is an exploded perspective view of another embodiment of the rotary blade assembled to the blade mount.

FIG. 11 is a partially cutaway perspective view of the rotary blade attached to the holding stand.

FIG. 12 is a plan view of the rotary blade attached to the holding stand.

FIG. 13 is a front view of a cylindrical agricultural cutter in which the present invention can be implemented, with a fixed blade attached.

FIG. 14 is a vertical sectional side view of the fixed blade same as above.

[Explanation of symbols]

a...Rotary blade, b...Fixed blade, K...Cutter mount, S...Spindle,
W...axis center line of main shaft S, Z...rotation locus of blade edge of rotary blade a,
L1, L2...Protrusion length of the blade mounts 3, 3, α...Inclination angle of rotary blade a, β...Inclination angle of fixed blade b, 1...Machine frame, 1
a... Support leg, 10... Bearing support member, 2... Cutting chamber, 2a... Feed roll chamber, 2b... Supply gutter, 2c... Discharge gutter, 20... Inlet, 21, 22... Feed roll, 3... Blade mounting bracket , 3a... Base board, 30... Boss part, 4... Assembly seat, 4a... Seat surface, 40
...set bolt, 41...bolt hole, 42...adjustment bolt,
43... Standing wall, 5... Set bolt, 50... Bolt hole, 6
... Holding stand, 6a... Base plate, 6b... Holding plate, 60... Fitting recess, 61... Through hole, 62... Set screw, 63... Screw hole, 64
... Bolt insertion hole, 7... Holding frame, 70... Abutment, 71... Holding plate, 8... Mounting base, 80... Set bolt.

Claims (1)

[Claims] Claim 1: Left and right knife mounts 3, 3 that integrally and continuously protrude in the radial direction from a boss portion 30 fitted to the main shaft S.
is formed so that the protrusion length L1 of one of the blade mounts 3 from the boss part 30 is shorter than the protrusion length L2 of the other blade mount 3 from the boss part 30, and the protrusion length L1 The short side blade mount 3 is shifted forward in the rotational direction, and the long and short blade mounts 3 and 3 are arranged in parallel on the left and right sides.
A flat platform 3a is suspended diagonally between the outer ends of the base plate 3a so that it slopes downward from one side of the left and right to the other in front view, so that one side of the left and right has a large diameter and the other side has a small diameter as a whole. A cone-shaped blade mounting base K is formed, and a base plate 3 on the outer end side thereof is formed.
An assembly seat 4 for assembling the rotary blade is mounted on the outer surface side of a, and its seat surface 4a is a flat table surface that is parallel to the tangential direction of the circumferential surface of the main shaft S when viewed from the side. A blade mount in a cutting mechanism for a cylinder-type agricultural cutter, characterized in that the blade is inclined downwardly from one side toward the other side, and the downwardly inclined side thereof projects forward in the rotational direction in a plan view.