JPS6232811A - Rotary 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] Industrial applications This invention relates to a rotary mowing device and a tractor.

It is used by attaching it to a tiller, etc.

Prior Art and Problems to be Solved by the Invention In a rotary mowing device in which a suitable number of horizontal rotary cutting blades for rotating and cutting grass are arranged side by side in the left and right direction with respect to the cutting progress direction, one of these is usually used. Since each rotary cutting blade is fixed integrally, for example, if there is a tree or other obstacle at one end or both ends of the mowing path, avoid the obstacle and cut the grass. It is not easy to perform the work, and
If the entire rotary mowing device is moved largely to avoid obstacles, there is a risk that uncut mowing may occur.

Means for Solving the Problems This invention provides an appropriate number of rotary cutting blades (1) that cut grass by rotating around a vertical axis, and that a suitable number of rotary cutting blades (1) are arranged in a row in the left and right directions with respect to the cutting progress direction, and Rotary cutting blade body (1)
(1) One or both rotary cutting blade bodies (1),
The rotary mowing device is configured such that the rotary mower body (1) is provided with a rotation adjustment mechanism (2) that can adjust the rotation in the front and back direction around the adjacent rotary mower body (1).

Functions and Effects of the Invention The rotary cutting blade bodies (1) at the − side end portion or both side end portions of the rotary cutting blade bodies (1) (1) (1) connected in the left and right direction,
The rotation adjustment mechanism (2) allows the rotary mowing device (1) to move horizontally to the adjacent rotary mower body (1) (when positioned at the outer position, the cutting width of the rotary mowing device is maximized; In addition, the rotary cutting blade body (1) at this side end is connected to the adjacent rotary cutting blade body (
1) When the blade is rotated forward or backward, the cutting width decreases with the amount of rotation.

During mowing work with this rotary mowing device, for example, if an obstacle exists at one end of the mowing path, the rotary mowing blade (1) at the side end that is about to collide with the obstacle will be moved. , the rotation adjustment WJ mechanism (2) can be used to rotate the robot rearward, reduce the cutting width, and avoid obstacles.

In this way, there is no need to move the entire rotary mowing device to avoid obstacles, thus making the mowing work easier, and reducing the cutting width just before the obstacle or immediately after passing the obstacle position. Since it is possible to expand the cutting width,
You can reduce the amount of grass left uncut.

Embodiment As shown in the figure, a pair of left and right front wheels (4) (4) are installed at the front of the chassis (3), and a pair of left and right rear wheels (5) (5) are installed at the rear of the chassis (3).
an engine room (6) in which the engine is housed in the front part of the chassis (3), a control handle (7) and a driver's seat (8) on the rear side of the engine room (6).
In a general tractor in which the left and right front wheels (4) (4) and the left and right rear wheels (5) (5) are provided, the underside of the chassis (3) is provided with a A pair of left and right telescopic cross links (9) (9) are provided on the chassis, and the upper ends of the left and right cross links (9) (9) are attached to the chassis (9).
3).

Further, on the lower side of the left and right cross links (9), there is a vertical solid bearing part (10) at the center position of the left and right cross links (9), and There is also a vertical shaft bearing part (11) in the rear right side position of the real shaft bearing part (10).
) with an open lower part.
2) is provided and pivotally supported at the lower end portions of the left and right cross links (9) (9).

Moreover, on the upper side of the mounting base (12) of the solid shaft bearing part (10), there is a vertical rotation support part (13) of the rotation adjustment WJ mechanism (2).
A curved arm (15) having a vertical bearing part (14) at the left end thereof is rotatably provided on the rotary support part (13), and the solid shaft bearing part (lO) is rotatably provided. , shaft bearing part (1
1) and the shaft bearing part (14) have a pulley (16
) and the cutting blade (17) at the lower end respectively support the transmission shaft (18) of the rotary cutting blade body (1) fixed to each other, and between these pulleys (1B) (1B) (1B) At the same time as winding the belt (19), this interlocking belt (19)
) to tension the spring (20)
A tension pulley (22) supported by a tension arm (21) having is provided with a reciprocating hydraulic cylinder (24) that can rotate the arm (15) in the front and rear directions.

Moreover, the cutting blade (
A cover (25) is provided to cover the rotational outer circumference and upper side of the mounting body (17), and the outer circumferential rear part of the cover (25) and the mounting base (1
A gauge roller (26) which is in contact with the ground and supports the rear part of the rotary mowing device is pivotally attached to the rear part of the outer circumferential surface of 2), so as to be rotatable from side to side.
A front roller (27) is provided which touches the ground and supports the front part of this rotary mowing device.

In addition, (28) is a wire that allows the rotary mowing device to be lifted and lowered from an arm (31) attached to the lower link (30) of the tractor via a pulley (29), and (32) is a wire that is attached to the front part of the tractor. This is a belt transmission mechanism that transmits power from the power output shaft to the rotary mower.

Next, the effect will be explained. When the lower link (30) is raised, the rotary mowing device moves upward via the arm (31) and the wire (28) while being maintained in a horizontal state by the pair of cross links (9), and vice versa. When the lower link (30) is lowered, the rotary mowing device is lowered by its own weight and is supported by the front roller (27) and the left and right gauge rollers (213) (2B) coming into contact with the ground.

The power of the front power take-off shaft of the tractor is transferred to the transmission shaft (1 day) of the solid shaft bearing (10) via the belt transmission mechanism (32).
The power is transmitted to each pulley (1B) (16) and the transmission shaft (+8) (18) by the transmission bell) (+9).
) through each cutting blade (17) (17) (17
).

When the hydraulic cylinder (24) is hydraulically operated to the shortening side, the arm (15) and the rotary cutting blade body (1) rotate forward, thereby increasing the cutting width to the left from the center of the rotary mowing device. Conversely, when the hydraulic cylinder (24) is hydraulically operated to the extension side, the arm (15) and the rotary cutting blade body (1) rotate rearward, thereby reducing the cutting width to the left from the center of the rotary mowing device. .

Note that the transmission belt (
19) is kept constant by a tension pulley (22) on which a spring (20) acts.

Moreover, as shown in FIGS. 4 and 5, each of the cutting blades (1) (1
) (1) has a vertical bottle hole and an arc-shaped long hole (33) with the bottle hole as the arc center, and the upper surface of this cutting blade (1) has an L-shaped hole. A plate-shaped vane (34) is supported by a pin (35) in the bottle hole, and a pin (36) for regulating the rotation range of the vane (34) is inserted through the elongated hole (33).

This blade plate (34) receives resistance from the grass clippings by rotating together with the rotary cutting blade (17), and rotates at an angle to one side with respect to the rotating cutting blade (1) within the regulation range of the elongated hole (33). Then, a wind is generated in the direction in which the grass clippings are released, and the grass clippings are released. Also, if the direction of rotation of the rotary cutting blade (17) is reversed, the blade plate (3)
4) is also tilted in the opposite direction, so the direction in which the grass clippings are released can be changed.

[Brief explanation of the drawing]

The figures show one embodiment of the present invention, in which Fig. 1 is a plan view, Fig. 2 is a partial front sectional view, Fig. 3 is a side view including the tractor, and Figs. FIG. In the figure, reference numeral (1) indicates a rotary cutting blade body, and reference symbol (2) indicates a rotation adjustment mechanism.

Claims (1)

[Claims] A rotary cutting blade that cuts grass by rotating around the vertical axis (1)
A suitable number of rotary cutting blade bodies (1) are arranged in a row in the left and right directions with respect to the cutting progress direction, and one or both of the rotary cutting blade bodies (1) at the left and right end portions (1), This rotary mowing device is provided with a rotation adjustment mechanism (2) that can adjust the rotation in the front-rear direction around the adjacent rotary mower body (1) on the rotary mower body (1).