JPS61173710A - Moving grass reaper - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application This invention relates to a mobile mower that cuts grass while moving, and can be used as a ridge mower that cuts grass along an inclined surface.

Conventional technology A device that switches the direction of rotation of a rotary cutting blade between forward and reverse, and a device that tilts the rotating surface of the cutting blade against the grass surface to be cut. There are examples.

Problems to be Solved by the Invention For example, in ridge mowing, when mowing the grass on the upper surface of the ridge and the slopes on both the left and right sides of the ridge, if the ridge grass cut into the paddy fields on both the left and right sides of the ridge is cut away by the rotation of the cutting blade. However, it was necessary to collect the scattered grasses in the rice fields, as they could impede the growth of rice. In addition, separately switching the rotational direction of the rotary cutting blade and switching the inclination of the rotating surface is complicated both in structure and operation.

Means for Solving the Problems This invention provides a switching device (4) for switching the direction of rotation of a rotary cutting blade (3) to the left or right, which is provided on a traveling vehicle body (2) having a driving force 11 (1) and traveling; a tilting device (5) that tilts the rotating surface of the rotary cutting blade (3) to the left and right with respect to the traveling vehicle body (2);
), and the mowing mower is configured such that switching of the rotation direction of the rotary cutting blade (3) and switching of the inclination of the rotating surface can be switched in conjunction with each other.

Functions and Effects of the Invention When the prime mover (1) of the movable mower is started, the rotary mower (3) is rotated, and the grass is mowed while moving forward, the cut grass is spread in the direction of rotation of the rotary mower (3). being hit by a mower blade,
It is guided by the frictional force with the top surface of the blade, or by the air flow generated by rotation, and is blown away.
Considering the convenience of collecting grass after work, a device (4) is provided to change the direction of rotation of the cutting blade (3) in the direction in which you want the cut grass to be thrown.
It is to be switched depending on. In addition, in a terrain where the traveling body (2) of the mobile mower is on a horizontal grassland and either the left or right side is an uphill or downhill slope,
When the traveling vehicle body (2) moves on flat ground and cuts grass on the slopes on the left and right, the rotary cutting blades (3) are moved relative to the traveling vehicle body (2) in order to align the rotating surface of the rotary cutting blades (3) with the slopes. The rotating surface of the rotor is tilted by a tilting device (5).

In mowing work involving such sloped land, the rotational direction of the rotary cutting blade (3) and the tilting direction are appropriately combined and the rotational direction switching device (4) and the tilting device" (5) are linked. By configuring the switch to be switchable, the switching operation can be made smooth and simple.

Embodiment In the illustrated example, the mobile mower is a paddy field ridge mower, and the traveling vehicle body (2) is supported by left and right wheels (6), and has a traveling interlocking mechanism and a cutting blade interlocking shaft (7) inside. The prime mover (1) is mounted on the upper part of the interlocking case (8), and the interlocking case (8)
8) A bar handle (9) to be attached to the rear upper part is provided so as to protrude obliquely upward to the rear. In addition, a horizontal shaft (11) that transmits power to the cutting blade (3) is supported on a boss portion (10) projecting forward in the direction of travel (A) at the bottom of the interlocking case (8). The rear end of the shaft (1, 1) and the cutting blade interlocking shaft (7)
The bail gear (12) (12) provided at the lower part is configured to mesh with the bail gear (12) for transmission.

The rotary cutting blade (3) is a disc cutting blade having a blade on the outer periphery of the disc, and is fitted into a horizontal shaft (11) provided on the front side of the interlocking case (8) and rotates around the shaft (11). A cutting blade shaft (14) is provided at the lower part of the cutting frame (13), which is rotatably supported and suspended from the tip of the cutting frame (13).

The rotation direction switching device (4) of the cutting blade (3) vertically connects a rotatable shaft (16) to a vertical portion (15) formed at the attachment base of the cutting frame (13) to the traveling vehicle body (2). The lower end of the shaft (16) is provided with a gear gear (17) that meshes with the front end of the horizontal shaft (11), and the upper end of the shaft (16) is is a pair of pulleys (1B) (
1B) are arranged through the interval (B). These pulleys (
A gear part (20) is provided on the inside of each of the opposing parts 18) and (19), and facing the gap (b) part,
A clutch gear (21) is provided that fits into a spline portion provided on the shaft (16) and can slide up and down along the shaft (IB). The clutch gear (21) has the upper and lower pulleys (1
9) Gear part (20) provided in (18) (2
0) to mesh with the upper and lower internal gear parts (22) (22
), and a groove (23) is provided on the outer periphery, and a shifter (20) supported by the reaping frame (13) is fitted into this groove (23).The shifter (24) is attached to the reaping frame ( The clutch gear (21)
A spring (2B) is connected to the opposite side of the groove (23) to be pulled upward, and a wire (27) is connected to the other end of the wire (27) to be pulled downward. By operating the connected switching lever (28),
The shifter (20) engages and interlocks the clutch gear (21) with the upper pulley (18), and the lower pulley (18)
It is configured to be interlocked so as to perform a switching operation that meshes with and interlocks with the switch.

The bell (29) wound around the lower pulley (18) is
The cutting blade (3) is suspended between the cutting blade shaft (11) and a pulley (30) provided thereon to rotate the cutting blade (3) in conjunction with the pulley (30) provided on the cutting blade shaft (11).
) is suspended between a pulley (33) provided on a counter shaft (32) arranged on the side of the cutting blade shaft (14), and ) and a gear (34) that is provided on the cutting blade shaft (14) and meshes with the blade shaft (14).
(34), the cutting blade (3) is configured to be interlocked and rotated in a reverse direction. The tilting device (5) is configured with an interlocking rotation direction so that the cutting blade (3) rotates clockwise when the lower bell) (29) is transmitted. The reaping frame (13) is configured to be tilted from side to side around the horizontal axis (11) which projects forward from the interlocking case (8) at its mounting base. , wires (37) and (38) wound around pulleys (35) and (3B) that protrude rearward from the reaping frame (13) and have the transverse shaft (11) inserted therein, respectively. The left and right ends of the switch/
<-(28) is connected to the operation.

The interlocking structure of the rotational direction switching device (4) and this tilting device (5) that switches the tilting direction is such that the rotary cutting blade (3)
The configuration is such that when tilting to the right, the rotation is switched to the left, and when tilting to the left, the rotation is switched to the right.

The switching lever (28) is provided with a lever case attached to the left and right bar handles (9), and a left-right axis (40) supported by the left and right walls of (38). A rotatable switching lever (28) is provided, and the upper lever (28)
) is provided with a pin (42) in order to be able to tilt from side to side. Moreover, on the left and right sides of the boss portion (41),
Left and right shift arms (43) and (44) are provided rotatably around a shaft (40).

The shift arms (43) and (44) are raised above their respective homo parts and then bent symmetrically inward, bringing their tips close together to form a gate shape, and forming a gate shape between the left and right shift arms. (43) (44) Shift arm (45) (45) and (41) protrude from the boss in the front and back direction.
3) (4B) and the running vehicle body (2) in the traveling direction (
b) The left shift arm (45) (45) is connected to both ends of a wire (37) that is wound around a pulley (35) that tilts the cutting blade (3), and the right shift arm (4B) Both ends of the wire (38) wound around the pulley (3B) are connected to (4G).

The rotation direction switching arm (47) is connected to the lever case (3).
The switching arm (48) is supported by a shaft (48) provided in the front-rear direction below the negative side of the left-right shaft (40) in
The shift arm (50), which is provided in a branch-like manner and protrudes from the inclined switching lever (2), is inserted into the elongated hole (48) provided in the switching arm (47).
One end of the rotational direction switching wire (27) is connected to the lower arm (51) of 7), and when the switching lever (28) is switched from side to side, the rotational direction switching arm (47) is connected to the lower arm (51).
) is configured to switch left and right. This switching lever (
The operation pattern of 28) is formed into a gate shape, and the lever (28)
A forward-opening gate-shaped guide hole (52) is provided on the upper slope of the lever case (38) to guide the lever (28). A lever stopper (53) is installed in the guide hole (52) so that the degree of inclination can be set from horizontal to three levels.
) is provided and displayed on the panel. (54) is the upper surface of the ridge, and (55) is the inclined surface of the ridge.

Note that the rotary cutting blade (3) may be of a type that rotates around one end of the blade-like cutter.

When starting the prime mover (1), moving the ridge mower to position it at the right end of the upper surface (54) of the ridge, and moving the switching lever (28) toward the lower right end of the panel guide hole (52), press the switching lever ( 28) is tilted to the right around the link pin (42) at its lower end, so the shift arm (50) protruding branch-like from the switching lever (28) is in the long hole of the switching arm (47) in the rotational direction. The arm (47) is moved in the right tilting direction, the switching arm (47) is tilted about the axis (48), and the lower arm (51) to which the wire (27) is connected loosens the wire (27). The shifter (20) provided on the vertical part (15) of the reaping frame (13) is pulled up by the spring (28) and moves upward together with the shifter stay (25), and the clutch gear (
21) upward so that its gear part (22) meshes with the gear part (20) of the upper pulley (18), and the upper belt (
31), the counter shaft (3) of the rotary cutting blade (3)
2) When pushing up the zero-order switching lever (28) upward of the guide hole (52), which causes the cutting blade shaft (14) on which the cutting blade (3) is provided to be rotated counterclockwise by the gear (34) (34) , the switching lever (28) is connected to the right shift arm (44).
) in the traveling direction (a) of the traveling vehicle body (3), the pulley (36) is rotated clockwise via the wire (38) that is locked and connected to the shift arm (46) (4B), so the reaping frame (13) is inclined to the right. The degree of this inclination is determined by the stop (53) at the position where the rotating surface of the rotary cutting blade (3) is aligned with the inclined surface (55) on the right side of the ridge.
All you have to do is lock the switching lever (28) to the sloping surface.Then, when the traveling vehicle body (2) is moved forward and the mowing continues, the cut grass is moved to the slope by the rotational action of the cutting blade (3), which rotates to the left. (55) to prevent it from being blown to the left in the high direction of the slope (55) and into the rice fields etc. that are connected to the lower end of the slope (55).
While moving the traveling vehicle body (2) forward, the slope on the left side of the ridge (55
), move the switching lever (28) to the left side of the guide hole (52) and then push it forward.
Since the mowing blade (3) can be tilted to the left and rotated to the right by the interlocking action opposite to the above, the cut grass can be accumulated in the ridge without scattering into the rice field on the left side. In this way, it is convenient to collect grass, and there is no scattering of grass clippings that would impede the growth of rice in the paddy field.

[BRIEF DESCRIPTION OF THE DRAWINGS] The drawings show an embodiment of the present invention, in which FIG. 1 is a partially sectional side view, FIG. 2 is a partially sectional side view, and FIG.
4 is a front sectional view of a portion, FIG. 5 is a diagram illustrating the operation, FIG. 6 is a front view of a portion, and FIG. 7 is a diagram illustrating the operation. In the figure, code (1) is the prime mover, (2) is the running vehicle body, and (3)
(4) shows a switching device, and (5) shows a tilting device.

Claims (1)

[Claims] A switching device for switching the direction of rotation of a rotary cutting blade (3) provided on a traveling vehicle body (2) having a prime mover (1) and running from side to side (
4) and the rotating surface of the rotary cutting blade (3) to the traveling vehicle body (2).
A mobile mower comprising a tilting device (5) for tilting the rotary mowing blade (3) from side to side, and switching the direction of rotation of the rotary cutting blade (3) and switching the inclination of the rotating surface in conjunction with each other.