JPH08317717A - Mower for two-face mowing - Google Patents

Abstract

PURPOSE: To make a mower capable of mowing with a slight increase of power required for spreading mowing breadth corresponding to an increase of a breadth to mow weeds on a slope according to an increase of the height of a levee. CONSTITUTION: In a mower for two-faces mowing wherein a mowing mechanism 5 for a flat face mowing and a mowing blade mechanism 8 for a slope mowing are installed in parallel at right and left in a front side of a machine body 1 in a front view, a fitting frame 6 vertically revolving around a longitudinal supporting shaft S is fitted in the machine body 1 and a supporting frame 7 longitudinally revolving around a vertical supporting shaft W is supported by the frame 6, and rotatable blade mechanisms 80 each composed of a rotatable blade 81 of a small diameter and a rotating shaft 82 are supported in multiple on the supporting frame 7 to obtain the mowing blade mechanism 8 for mowing a slope.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a mower that freely travels so that weeds vegetated on the two surfaces of the ridge and the slope can be mowed in one stroke. On the front side, there are a cutting blade mechanism for cutting planes that cuts along a horizontal surface and a cutting blade mechanism for cutting slopes that cuts along an inclined surface that is desired to incline to a horizontal surface. In (1), the present invention relates to improvement of a two-sided mowing machine that is mounted side by side in parallel.

[0002]

2. Description of the Related Art Grasses that vegetate on a flat surface along a horizontal surface, such as the upper surface of a ridge, and grass that grows on an inclined surface that is inclined with respect to a horizontal surface, such as the slope of a ridge, are A two-sided mowing machine A, which is designed to be mowed in the working process, is usually shown in FIG.
As shown in Fig. 5, by operating the pair of left and right handle rods 3 and 3 protruding rearward, the front side of the traveling type machine body 1 traveling by the traveling wheels 2 is used for horizontal mowing. The blade mechanism 5 and the cutting blade mechanism 8 for slope cutting are arranged side by side so that the posture of the cutting blade mechanism 5 for horizontal cutting is fixed to the machine body 1. Assemble the support,
In the cutting blade mechanism 8 for cutting slopes, the machine body 1 is provided with the assembly machine frame 6 which swings and swings freely up and down around the support shaft S in the front-rear direction, and is assembled and supported by this. By the swinging rotation of the assembling machine frame 6, a reaping operation is performed along an inclined surface inclined at a desired inclination angle with respect to the horizontal surface, and a horizontal surface and an inclined surface inclined with respect to the horizontal surface. It is designed to be able to mow grass on two sides.

[0003]

The above-mentioned mower A for two-sided mowing is used, for example, to mow grass vegetated on two sides of the ridge and the slope of a paddy field. In this case, the inclination angle of the slope can be dealt with by inclining and rotating the assembling machine frame 6 supported by the machine body 1 via the support shaft S, but the change in height above and below the slope. Therefore, there is a problem that it cannot be adapted to the change of the cutting width which is expanding and contracting.

This problem can be dealt with by increasing the cutting width (working width) of the cutting blade mechanism 8 for slope cutting, which is mounted on the assembly machine frame 6. When the blade mechanism 8 is configured by a rotary blade mechanism that rotates by a rotary shaft, the rotary blade is formed to have a large diameter in order to increase the cutting width, so that the horsepower required to rotate it increases. Another problem arises that causes a malfunction in the mowing operation and a malfunction in the operation of the mower A.

[0005]

[Purpose] The present invention has been made in order to solve the above-mentioned problems occurring in the conventional means, and when the height of the ridge has increased, the width for cutting grass on the slope has increased. Moreover, it is an object of the present invention to provide a new means by which it is possible to easily expand the cutting width to accommodate it, without increasing the required horsepower.

[0006]

In the present invention, as means for achieving the above object, a cutting blade mechanism for plane cutting and a cutting blade mechanism for slope cutting are provided on the front side of the machine body. In a two-sided mowing machine that is mounted side by side in the front view, the machine frame is provided with an assembly machine frame that rotates up and down around a support shaft in the front-rear direction. A supporting machine frame that rotates back and forth around the shaft is supported, and a rotating blade mechanism consisting of a small-diameter rotating blade and a rotating shaft that rotates the rotating blade mechanism is mounted in parallel on the supporting machine frame. The present invention proposes a double-sided mower, which is characterized by having a cutting blade mechanism for chamfering.

[0007]

According to the means of the present invention configured as described above,
When the height of the ridge increases and the cutting width of the slope to be mowed by the cutting blade mechanism 8 for cutting slope increases, the rotary blade mechanism 80 for cutting slope increases its number. The supporting machine frame 7 which is axially supported in parallel is rotated in the front-rear direction of the machine body 1 about the support shaft W which is a vertical axis with respect to the assembly machine frame 6 which is swingable about the support shaft S. By making the projecting direction of the supporting machine frame 7 project to the side of the machine body 1, the entire cutting width of the rotary blade mechanisms 80 ... Which are arranged in parallel is increased.

In each of the rotary blade mechanisms 80 for slope cutting, which are mounted side by side in parallel with the support frame 7, each rotary blade 81 has a small rotation path at its rotary end. With such a configuration, each rotary blade mechanism 80 can be driven and rotated by a small driving force, and one large rotary blade mechanism 80 having a plurality of parallel-aligned diameters of the rotary loci of the rotary blades. As compared with the case where the cutting blade mechanism 8 for slope cutting is configured with a rotary blade having a diameter, it can be driven with a significantly smaller rotational power.

When the cutting blade mechanism 8 for slope cutting is constructed by arranging a plurality of rotary blade mechanisms 80 ... 8
By setting the rotation direction of 1 in a direction in which the side facing the front of the machine body 1 faces from the lower side to the upper side, when mowing grass vegetated on the slope, the grass mowed on the slope is It will be sent to the upper surface of the ridge to prevent it from falling into the field.

Further, the rotary blades 81 of each rotary blade mechanism 80 mounted on the supporting machine frame 7 and mounted on the supporting machine frame 7 in parallel are arranged in such a manner that their blade edges have a phase difference in the rotational direction. The support machine frame 7 relative to the assembling machine frame 6 so as to expand and contract the cutting width by arranging them in parallel so that the outer edge sides of the respective rotation loci of the blade edges overlap each other. Even if it is turned to, the grass on the slope can be mowed down within the range of the mowing so that no cutting remains.

[0011]

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

FIG. 2 is a plan view of a two-sided mowing machine A according to the present invention. In FIG. 2, 1 is a machine body, E is an engine mounted on the upper surface side of the rear end of the machine body 1, 2 is a running wheel mounted on the lower surface side of the rear end of the machine body 3, 3 and 3 are left and right handle rods mounted so as to project rearward at the rear end of the machine body 4, 4 is a front end of the machine body 1. A guide wheel 5 mounted axially on the section is a cutting blade mechanism for plane cutting mounted on the front side of the machine body 1 in a state in which the posture of the machine body 1 is fixed. Assembly frame for supporting up and down swinging, 7
Is a supporting machine frame rotatably supported on the assembling machine frame 6 in the front-rear direction, 80 ... is a rotary blade mechanism axially mounted on the supporting machine frame 7 in parallel, and 8 is a rotary blade mechanism 80 ... 2 shows a cutting blade mechanism for slope cutting.

The vehicle body 1 has left and right handle rods 3 mounted on the rear end side of the vehicle body 1 by a driver who walks behind the vehicle body 1 and follows.
-By operating 3, the vehicle is a walking type that travels with the traveling wheel 2 pivotally supported on the rear end side and the guide wheel 4 pivotally supported on the front end side. In some cases, the drive shaft may be transmitted to the axle through the output shaft of the engine E through the transmission mechanism. In addition, the guide wheel 4 is a pillar 1 that projects forward from a machine frame 10 fixed to the machine body 1 at the front end of the machine body 1.
A floating shaft is supported on the projecting end of 1.

The cutting blade mechanism 5 for plane cutting is the above-mentioned machine body 1.
The bearing support member 50 is assembled to the machine frame 10 that is fixedly installed at the front end of the rotary shaft 51 with the axial direction being the vertical direction,
The rotary shaft 51 is rotatably supported by a bearing, and a rotary blade 52 formed in a propeller shape is attached to the lower end of the rotary shaft 51.
Is transmitted to the output shaft of the engine E described above through an appropriate transmission mechanism such as a flexible shaft that can be housed in the main body portion 1a of the machine body 1 formed in the shape of a tubular cylinder, so that the engine E is driven and rotated. There is.

Further, the cutting blade mechanism 8 for slope cutting is provided in the body 1
An assembling machine frame 6 that freely pivots up and down around a support shaft S in the front-rear direction is supported on this, and is slidably fitted to the handle rod 3 and engaged at a desired sliding position. By associating the other end side of the wire 61 whose one end side is connected to the sliding cylinder 60 that can be mounted so as to be stopped, by pulling out or pulling in the wire 61 by sliding the sliding cylinder 60 with respect to the handle rod 3, The tilt angle of the machine frame 6 is adjusted to a desired value, and a support machine frame 7 that freely rotates back and forth by a vertical support shaft W is supported on the assembly machine frame 6, and the support machine frame 6 is supported. 7, a rotary blade 8 which is rotated by a vertical rotary shaft 82
The rotary blade mechanisms 80 composed of 1 are mounted in parallel in multiples so as to be mounted on the shaft so that the rotary blade mechanisms 80 arranged in parallel form the cutting blade mechanism 8 for slope cutting.

The support frame 7 is formed of a rigid frame including a support plate 70 extending laterally and a conductive case 71 having a channel-shaped cross section joined to the upper surface of the support plate 70. The support frame 70 has a base end. The disc-shaped mounting seat plate 72 provided on the side is joined to the assembling machine frame 6 and overlapped so as to be freely rotatable around the vertical support shaft W, and the peripheral edge of the mounting seat plate 72 is attached. Is fastened to the assembling machine frame 6 by tightening set bolts 74 ... Inserted in arc-shaped long grooves 73, 73 formed along a virtual circle centered on the above-mentioned support shaft W in the portion. 7 is integrally fixed to the assembling machine frame 6, and the set bolts 74 are loosened to rotate the supporting machine frame 7 with respect to the assembling machine frame 6 by a desired angle about the spindle W. I am trying to get the movement.

The rotary blade mechanism 80, ..., which is rotatably supported in parallel on the supporting machine frame 7 in multiple rows, is provided with bearing supporting members 83 on the upper surface of the supporting machine frame 7 at predetermined intervals. To
As shown in FIGS. 3 and 4, the vertical rotating shaft 82
Are respectively supported, their lower ends are projected to the lower surface side of the support plate 70, and propeller-shaped rotary blades 81 ... Are attached to their respective lower ends. And, these rotary blade mechanisms 80 ...
As shown in FIG. 3, sprockets are provided on the upper ends of the chains 2, ...
5 are wound so as to rotate in synchronization with each other at the same speed in the same direction, and at this time, the propeller-shaped rotary blades 81 mounted on the rotary shafts 82 are rotated by the adjacent ones. By arranging them so as to be displaced by approximately 90 degrees in the direction, the peripheral edges of the rotation loci are arranged close to each other so as to overlap each other while avoiding mutual interference.

Among the rotary blade mechanisms 80 ... Which are arranged in parallel, the rotary blade mechanism 80 located on the base end side of the supporting frame 7 is
The rotation shaft 82 thereof is arranged at a position where the axis line coincides with the support shaft W and is axially supported by the bearing support member 83, and the conduction shaft portion provided at the upper end of the rotation shaft 82 is described above through an appropriate conduction mechanism. The engine E is driven by being transmitted to the output shaft of the engine E.

In the illustrated example, the transmission mechanism for transmitting the output shaft of the engine E to the cutting blade mechanism 8 for cutting the slope is, in the illustrated example, a machine frame 10 provided at the front end of the machine body 1 described above.
The power take-off shaft provided at the upper end of the rotary shaft 51 of the rotary blade 52 of the cutting blade mechanism 5 for plane cutting mounted on the rotary blade mechanism 80.
The input shaft formed at the upper end of the rotary shaft 82 is configured to be conducted by a flexible shaft housed in the flexible tube 90, but may be appropriately configured such as by gear conduction. Is.

Further, in the illustrated example, the cutting blade mechanism 5 for plane cutting is provided with a machine frame 10 on the front end side of the machine body 1 and mounted on the machine frame 10. The cutting blade mechanism 8 for cutting is provided at a position parallel to the assembly machine frame 6 so that the cutting blade mechanism 5 for plane cutting and the cutting blade mechanism 8 for slope cutting are arranged side by side. There are cases.

[0021]

As described above, in the two-sided mowing machine according to the present invention, the cutting blade mechanism 8 for the slope cutting has the body 1
On the other hand, a rotary blade mechanism 80 including a rotary blade 81 having a small diameter is mounted on a supporting machine frame 7 which is supported by an assembling machine frame 6 which rotates up and down around a support shaft S so as to rotate back and forth around a support shaft W. Are arranged in parallel in a multiple line, the power for driving and rotating the rotary blades 81 can be reduced. Then, by rotating the supporter frame 7 about the support shaft W and inclining the supporter frame 7 in the front-back direction at a desired angle, the action width for mowing the grass is expanded or contracted, so that the height of the ridge varies. The cutting width of the cutting blade mechanism 8 for cutting the slope can be expanded / reduced in response to the change in the width (height) of the slope without increasing the required power.

[Brief description of drawings]

FIG. 1 is a plan view of a conventional two-sided mowing machine.

FIG. 2 is a plan view of a two-sided mowing machine according to the present invention.

FIG. 3 is a cross-sectional plan view of a main part of the above mower.

FIG. 4 is a vertical cross-sectional view of the main part of the above mower.

FIG. 5 is an explanatory view of an operation of a main part of the above mower.

[Explanation of symbols]

A ... Mower, E ... Engine, SW ... Spindle, 1 ... Airframe,
1a ... Main part, 10 ... Machine frame, 11 ... Struts, 2 ... Running wheels,
3 ... Handle rod, 4 ... Guide wheel, 5 ... Cutting blade mechanism, 50 ... Bearing support member, 51 ... Rotating shaft, 52 ... Rotating blade, 6 ... Assembly machine frame, 60 ... Sliding cylinder, 61 ... Wire, 7 … Supporting machine frame, 7
0 ... Supporting plate, 71 ... Conductive case, 72 ... Mounting seat plate, 73
... long groove, 74 ... set bolt, 8 ... cutting blade mechanism, 80 ... rotary blade mechanism, 81 ... rotary blade, 82 ... rotary shaft, 83 ... bearing support member, 84/85 ... chain, 90 ... flexible tube.

Claims (3)

[Claims] 1. A grass cutting for two-sided cutting, in which a cutting blade mechanism 5 for plane cutting and a cutting blade mechanism 8 for slope cutting are mounted on the front side of the machine body 1 side by side in a front view. In the machine
The machine body 1 is provided with an assembling machine frame 6 that rotates up and down about a support shaft S in the front-rear direction, and a support machine frame 7 that rotates back and forth about a support shaft W in the up-and-down direction is supported by the support frame 7. A rotary blade mechanism 80 including a rotary blade 81 having a small diameter and a rotary shaft 82 for rotating the rotary blade 81 is mounted on the machine frame 7 in parallel and mounted to form a cutting blade mechanism 8 for slope cutting. A mower for double-sided cutting. 2. A rotary blade mechanism 80, which is mounted in parallel on the supporter frame 7 in parallel, is rotated in the same direction at the same speed by the rotary blade mechanisms 81 ... The mower for double-sided mowing according to claim 1, characterized in that the front side of those turning loci is driven so as to turn upward. 3. The rotary blades 81 of a rotary blade mechanism 80 ... Mounted in parallel on the supporting machine frame 7 in parallel are formed in a propeller shape, and the rotary blades 81 of adjacent rotary blade mechanisms 80 ... 7. The rotary blade mechanisms 80 ... Are mounted in parallel so that the two are driven to rotate with a phase difference in the rotational direction, and the peripheral edges of their rotational loci are brought close to each other so as to overlap each other. A two-sided mowing machine according to 1.