JPS611318A - grass mower - 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 Use This invention relates to a mower used for cutting ridges and other grass during agricultural work.

BACKGROUND OF THE INVENTION In grass mowers used for mowing ridges and other grass during agricultural work, which the invention seeks to solve, a disc-shaped cutting blade is usually used because it has a simple structure. However, in the case of this disc-shaped cutting blade, it is normal that 11 cutting blades are used for mowing the top surface of the ridge and mowing the slope.
However, one or more cutting blades must be used to mow the slope, and handling such as adjusting the position of the cutting blade and maneuvering the vehicle body during the cutting operation is extremely troublesome and difficult.

In addition, the vertical position and angle of the cutting blade relative to the ground to be cut are usually fixed, and if the running wheels have front and rear wheels to handle uneven ground, the cutting height will not be stable, making it easy to cut.

With ring type blades, the angle of the cutting blade changes and the cutting quality is not stable.

Means for Solving the Problem The first invention is based on the direction of movement of the vehicle body (1) on the vehicle body (1).
(a) between the drive shaft (2) provided substantially along (2), which protrudes upward and is rotatable left and right around the drive shaft (2), and at the upper end of this vertical axis (5). - a horizontal axis (6) that intersects the downward axis (5) laterally and is rotatable left and right around the vertical axis (5); The mower is configured such that it is freely movable and has a front-rear axis (7) at its tip that interlocks the rotary cutting blade (3) with an angle 17 that can be changed in the vertical direction.

The second invention is based on this vehicle body traveling direction (on the vehicle body (1)).
A) between the drive shaft (2) provided almost along Intersect with (2)”
A vertical shaft (5) that protrudes to one side and is rotatable left and right around the drive shaft (2), and a downward shaft (5) located at the upper end of this vertical shaft (5). a horizontal axis (6) that intersects with the horizontal direction and is rotatable left and right around the vertical axis (5); and a front-back axis (7) that is vertically movable around the horizontal axis (6). ), a four-point link mechanism "9" consisting of this longitudinal axis (7) and a link rod (8) parallel to this longitudinal axis (7), and a front end of this four-point link mechanism (9). The mower has a structure in which the cutting blade shaft (4) is configured to be freely changeable in angle around the front lateral inner axis θQ.

Effects and effects of the invention The first invention is to first move up and down the drive shaft (2).

When the direction axis (5) is fixed in the vertical position, the rotary cutting blade (3) is in a horizontal position and is driven by the cutting blade shaft (4) to cut the grass on the top of the ridge. At this time, the car body (1) also moves. Cutting blade (3)
Since the center of the vehicle body (1) coincides with the center of the vehicle body (1), the vehicle can naturally run on the ridge surface. Next, tilt and rotate the downward axis (5) to the left and right with respect to the drive shaft (2), and at the same time arbitrarily rotate the horizontal axis (6) with respect to the vertical axis (5) to create a ridge surface. When fixed according to the angle of the slope, the rotary cutting blade (3) matches the angle of the slope and is driven by the cutting blade shaft (4) to cut grass on the ridge and slope. At this time, the vehicle body (1) also cuts. The position of the blade (3) can be rotated freely by the vertical axis (5) and the horizontal axis (6), so it can run on the ridge surface.

As shown in the figure above, both the top of the ridge and the slope can be cut with a single cutting blade (3), and the vehicle body (1) can be used at all times even when cutting ridges with complex shapes or intricate terrain. You can mow easily while driving in a stable place that is easy to maneuver.

The second invention is based on a horizontal inner shaft (6) that rotates arbitrarily with respect to the vertical axis (5), and a longitudinal axis (7).
, the four-point link mechanism (9) composed of the link rod (8), the front transverse axis 0Q, and the cutting blade axis (4) allows the mowing to proceed regardless of whether the top of the ridge or the slope is being mowed. The cutting angle of the cutting blade (3) with respect to the ground always remains parallel.

As mentioned above, the position of the cutting blade (3) is automatically adjusted to maintain optimal cutting quality even if the slope changes due to uneven ground or meandering ridges, so there is no need to worry about the cutting quality decreasing. .

A drive shaft (2) provided almost along the traveling direction (A) of the embodiment vehicle body (1) and a prime mover mounted behind the drive shaft (2) are housed in a clutch case 01). Connect via a clutch for power transmission. A gear 03 is attached to the other end of the drive shaft (2), and a mating gear a that engages with the gear 03 intersects with the drive shaft (2) and projects upward at one end of a vertical shaft (5). A tilting rotation case QQ, which is attached to the shaft and has the drive shaft (2) and the gear 03 C14) inside, is rotated left and right with the drive shaft (2) as a support axis and the vertical axis (5) inside. The gear α3α shaft is arranged so as to be rotatable to the left and right while being held together with the case 0Q. In addition, in order to fix the left and right tilted positions of the tilted rotation case Q0, a lever guide a″i) is fixed to the clutch case θυ,
Engage the guide 07) to move the tilting rotation lever 0 to the tilting rotation case 7.0! It sticks to the il. Next, two gears θ are attached to the other end of the vertical shaft (5), and a mating gear (E) to be held in position is attached to the upper end of the two downward shafts (5). ” - is attached to one end of a horizontal axis (6) that intersects the downward axis (5) in the horizontal direction, and the vertical axis (5), the gear 0 scratch (E), and the horizontal axis (6) The left and right rotating case H, which is equipped with a Arrange it like this. A deceleration gear Q1) is attached to the vertical shaft (5) in the middle of the left-right rotation case 0, and a mating gear (C) that engages with the gear (21) is attached to the vertical shaft (5). 5) and a mating gear (C) which is pivoted on one end of a horizontally rotating shaft that intersects in the horizontal direction in the middle part, and a gear (C) is pivoted on the other end, and is secured to the gear (goods). Pivotally attached to the horizontally rotating crankshaft (C), and connecting the horizontally rotating shaft (C) and the gear (goods), the gear (C) and the horizontally rotating crankshaft (E) to the middle of the left and right rotating case QQ. The crankshaft is installed inside the lateral protruding part, and the crankshaft and one end of the lever (A), which is shaped like a letter in plan view and whose intermediate portion is supported by the tilted rotation case 00, are connected by a connecting rod. ) length can be adjusted.

Next, a gear is attached to the other end of the horizontal shaft (6), and a mating gear rod that engages with the gear is attached to a longitudinal shaft (7) that intersects with the horizontal shaft (6) and protrudes forward. ), and a gear 01) is pivotally attached to the other end of the longitudinal axis (7), and a mating gear 0O held on the gear OI) is attached to the longitudinal axis (7).
(7) and the gear (to) 01).
(a) A longitudinally long vertically movable case □□□ with a
is arranged so that it can rotate up and down while engaging the gear @ (7). Also, a gear (2) is mounted on the other end of the front transverse axis OQ, and a mating gear (2) that engages with the gear (B) is arranged to intersect with the front transverse axis (00) and a rotary cutting blade (3) is attached to the other end. It is attached to one end of the cutting blade shaft (4) to be mounted, and the front horizontal axis 0Q and the gear H
) and the cutting blade shaft (4), the cutting blade rotating case 7 (to) is connected to the cutting blade shaft (4) with the front-lateral direction axis Ql as the supporting axis.
is arranged so that the rotation can be changed without engaging the gear (1). The arm protruding from the upper part of the cutting blade rotation case (to) and the arm protruding from the upper part of the left-right rotation case OQ are connected by a link rod (8). A four-point link mechanism (9) is configured by the rotation case (to) and the cutting blade rotation case (to).Furthermore, an arm protruding to the front side of the upper part of the left-right rotation case OQ and the cutting blade rotation case (to) constitute a four-point link mechanism (9). A spring (2) for vertical balance of the cutting blade (3) is attached to the connection pin of the link rod (8) of the cutting blade (3), and a bowl-shaped ground plate (to ) are installed integrally.

Q
l), and the front wheel θ
Provided at the front end of the front frame (G). Furthermore, the frame (1) extends obliquely toward the rear of the vehicle body (1), and a T-shaped steering handle θ■ is provided on the left and right sides at the end of the frame.

The mowing blade (3) attached to the front end of the vehicle body (1) is rotated from the prime mover through two clutches θ and each shaft/gear, and the cutting blade (3) is rotated back and forth from side to side while mowing the ridges and other grass. When mowing grass on the top of the ridge, use the tilt synchronized lever Q81.
Adjust the tilting rotation case a so that the cutting blade (3) can maintain a horizontal position, and adjust the length of the connecting rod (a) for left-right swinging and the fulcrum position of the lever (a) to adjust the cutting blade (3). Adjust the phase shift and stroke of the left-right swing as appropriate. When mowing grass on a ridge slope, the angle of the cutting blade (3) is adjusted to match the left and right ridge slopes by tilting the tilting case OQ left and right using the tilting rotation lever 0 barrel. Link for left and right swing (
Depending on the length of c) and the fulcrum position of the lever (a), the cutting blade (3)
However, if it is on a slope, it will be a vertical swing, but the phase and stroke should be adjusted as appropriate. In addition, when mowing the upper surface of a ridge or mowing a slope, the cutting angle of the cutting blade (3) in the front and back direction is maintained by the four-point link mechanism/9) even if the position of the cutting blade (3) is displaced vertically. Automatically maintains the optimum cutting angle at all times. Also, the vertical movement of the cutting blade (3) is kept balanced by the spring tension, and the ground plate (toward) on the lower side of the cutting blade (3) is always maintained.
touched the ground lightly, and due to the conditions of the ridge, the vehicle body (1)
No matter what, you can always cut the mowing in a stable manner. Matakariblade (3
) can be freely displaced, so the vehicle body (1) can always travel in a stable location that is easy to maneuver even on complex-shaped ridges and intricate terrain.

[Brief explanation of the drawing]

The figures show an embodiment of the invention, and Figure 1 is a plan view;
FIG. 2 is a side view, and FIG. 8 is a plan sectional view. In the figure, (1) is the vehicle body, (2) is the drive shaft, (3) is the cutting blade, (4) is the cutting blade axis, (5) is the vertical axis, (6) is the horizontal axis, (7 ) is the longitudinal axis, (8) is the link rod, (9
) indicates a four-point linkage mechanism, and α1 indicates the front transverse axis.

Claims (2)

[Claims] (1), a drive shaft (2) provided on the vehicle body (1) almost along the vehicle traveling direction (A), and a rotary cutting blade (3) that is to be rotated in conjunction with this drive shaft (2). a vertical shaft (5) that extends between the blade shaft (4), intersects with the drive shaft (2), projects upwardly, and is rotatable horizontally and horizontally around the drive shaft (2); a horizontal axis (6) located at the upper end of the vertical axis (5), intersecting the vertical axis (5) in the horizontal direction, and rotatable left and right around the vertical axis (5);
A mower that is movable up and down around this horizontal axis (6) and has a front-back axis (7) at its tip that interlocks the rotary cutting blade (3) so that the angle can be changed vertically. . (2), a drive shaft (2) provided on the vehicle body (1) almost along the vehicle traveling direction (A), and a rotary cutting blade (3) that is to be rotated in conjunction with this drive shaft (2). a vertical shaft (5) that extends between the blade shaft (4), intersects with the drive shaft (2), projects upwardly, and is rotatable horizontally and horizontally around the drive shaft (2); a horizontal axis (6) located at the upper end of the vertical axis (5), intersecting the vertical axis (5) in the horizontal direction, and rotatable left and right around the vertical axis (5);
A longitudinal axis (7) that is vertically movable around this transverse axis (6);
7) and a four-point link mechanism (9) consisting of a parallel link rod (8), and a four-point link mechanism (9) whose angle can be freely changed around the front transverse axis (10) with respect to the front end of the four-point link mechanism (9). A lawn mower with a mowing blade shaft (4) that is configured to interlock with each other.