JP2552618B2 - Weeder in the lawn - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a weeder that removes only weeds that occur in lawns, especially grass weeds on a golf course from the root without damaging the lawn.

[0002]

2. Description of the Related Art Conventionally, for weeding in a place where weeds are growing all over the field or in a field, a machine for weeding with a few wings attached to a horizontal axis is well known, and they are all dug up soil. Weeds are not used in the market yet because the roots are cut off and the shoots bud again later.

Even less, weeds growing on the whole lawn,
Weeds that grow on the grass of the golf course can only be removed by weeding one by one, and the use of some kind of machine will quickly damage the grass itself. In addition, the conventional machine is almost impossible to respond carefully to weeds, it does not show the behavior to extract even the roots of weeds, and it is necessary to cut it and stop it for a while even if it is weeding. It had been.

[0004]

Problems to be Solved by the Invention To eliminate the above-mentioned troubles and to make a machine capable of completely removing and removing the weeds growing in the lawn, including the roots, to carry out trial experiments and directly annoy human labor. However, the most important object of the present invention is to develop a machine that can be carefully weeded by hand.

[0005]

[Means for Solving the Problems]

1. A rectangular frame 1 of a machine frame 1 is raised upward to form a handle portion, and front and rear of the machine frame 1 are provided with a floating front wheel 11 and a directional rear floating wheel 8 , respectively, and a rear wheel. The machine frame 1 can be moved up and down by the spring 9 of the column 4 .
Inside the lawn with two left and right rotary blades 25, 25 ' driven by the power from the prime mover E in the middle position of the front and rear wheels
Weeder, each part of which has the following characteristics:
It B. The rotary blades 25 and 25 'are bent at the tips alternately on either side.
It consists of a curved cutting blade 25 and a straight blade 25 '. The rotary blades 25 and 25 'are attached to the pulley 17.
Supported by the rotating plate 20 and the rotating plate supporting arm 24 which are rotated together.
The rotary blade opening / closing member 21 and the rotary blade fixed member 21 fixed to the stationary shaft 19
It is sandwiched between the rotary blade support member 22 and
It C The left and right rotary blades 25, 25 'are rotary blade opening / closing members
Due to the angular gradient of 21, the angle with respect to axis 19
The tip of the blade 25, 25 'hangs on the ground when moving forward.
The blades 25 and 25 'have narrowed tips before
Fully closed so that the edges of both blades 25, 25 'are fully closed.
Fully open at a closed position and a line of symmetry passing through the center
It has a structure. D The rotary blade opening / closing member 21 and the rotary blade supporting member 22
The fixing angle to 19 is the screw 181 of the shaft fixing base 18.
Fine adjustment is performed with the screws 211 and 221. Power from the prime mover E is applied to each pulley 12, 15, 1
Transmission to weeding blades 25 and 25 'by 6, 17 and V belt
Rotate.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION Next, an embodiment of the present invention will be described.
This will be described in detail in comparison with the drawings. The machine frame 1 of FIG. 1 encloses the whole in a substantially rectangular shape, and the part to be the handle on the right side is lightly pushed by a person and is raised to a horizontal position.
An operating lever L for the prime mover E is provided on the right side, and the machine frame 1
Idler wheel 11 via a shaft 10 in front of and at the rear has a spring 9 direction freely idler rear wheel 8 is supported (Figure 2) which can move up and down with little force the machine frame 1, the direction You can take it freely. Supports 2 are independently welded to the left and right sides of the machine frame 1, and a column 4 is provided in a hole formed in the center of a support plate 3 protruding horizontally to the side, and a wheel support member 5 with a spring 9 interposed therebetween. There is a rear wheel 8 which is fixed to the wheel support 6 by means of a shaft 7 on the wheel support 6. With this spring 9, the column 4 can be easily lowered by X length by simply pushing the machine frame 1 downward, and accordingly, the rotary blades 25 and 25 'are embedded by Y length under the turf ground, and the depth of the weed root is increased. Depending on the condition, the two blades are closed, and the root is pinched in the palm-shape and pulled out (Fig. 2). The fulcrum of the vertical movement of the machine frame 1 is the shaft 10 of the idle front wheel 11.

In FIG. 1, the rotation from the gasoline engine E is transmitted from the pulley 12 to the large pulley 15 by the V belt B, and from the pulley 16 fixed to the shaft 14 of the bearing bearing 13 to the pulley 17. On both sides of this, there are rotating plates 20 and 20 which are integrated with the pulley 17 and rotate by sliding with respect to the shaft 19.
It is fixed by ~ 6 rotating plate support arms 24. In FIG. 3, the rotary blade opening / closing member 2 fixedly integrated with the shaft 19
1, the rotary blade support member 22, and the rotary blade holding spring 23 attached to the rotary blade support member 22 are the same as the shaft fixing base 18 shown in FIGS.
The screw 181 is fixed. When changing the angle of the rotary blade opening / closing member 21, loosen the screw 181 and
It can be done freely by turning 9. In addition, fine adjustment
The rotary blade support member 22 and the screw 221 of the opening / closing member 21 and
And 211.

Next, the rotating behavior of the rotary blades 25, 25 ', which is an important point of the present invention, will be explained. The rotary blade on the left side of FIG. 3 is attached to the rotary blade mounting member 251, and the tip thereof is an inverted L-shape. Cutting blade 25 bent into a straight line and straight straight blade 2
The number 5 'and is designed alternately with the left and right is determined by the width and length of the blade. The two rotary blades 25, 25 ' are penetrated by the shaft 19 and the rotary plate support arm 24, and are attached with play in the elliptical hole 29 and the shaft hole, which are considerably tapered, and the rotary blade opening / closing member 21. It is dynamically held by the rotary blade support member 22. Although the sliding portion 28 does not generate much friction, it is also within the scope of the present invention to use a ball bearing or a material having a good sliding property. In FIG. 2, 26 is an engine support frame and 27 is a pool.
Lee's support frame.

The shaded portion in the right side of FIG . 3 is a fixed portion, and the rotary blades 25 and 25 'are rotated by the rotary plate support arm 24, and are substantially parallel to the ground due to the angle of the rotary blade opening / closing member 21.
Set the two blades to be fully open slightly above, sink the machine frame 1 and move forward to near the root of the weed, and in order, it is the P point where the cutting blade H and the straight blade K joined together, that is, fully closed. At that point pull out the grass roots. The length at the time of the palm palm may be about 2 cm, and then the two blades 25 and 25 ' start to open by the forward movement, slightly below the parallel to the ground, that is, at a position symmetrical with the fully open point passing through the axis 19. The driven rotary blades 25, 25 ' are about 150-200
Rotation / minute, the width of the blade that penetrates into the lawn is about 2 cm, and the length is about 12 to 13 cm, which hardly damages the grass itself. It is important to make one cutting blade H and one straight blade K alternately. However, when mounting two rotary blades 25, 25 'on the left and right, the cutting blade H and the straight blade K must be attached to the palm plane P. Must be formed. Therefore, in one rotary blade, the opposite sides of the cutting blade H and the straight blade K on the center line do not have to have the same shape.

Further, a support shaft is provided at the rear of the machine frame, and a nylon brush that bites into the rotary blade is set in the same direction as the rotary blade, and the grass that has fallen is dropped through a wire mesh tube to the rear box. The ones to be collected in have already been prototyped. In addition, a machine made with two wheels is an excellent machine that can be used very easily.

The machine frame 1 floats on a spring type 9 and moves, and when a weed is present, a handle is pushed to cause the blade to bite into the soil, and when the root is sandwiched and pulled out, the machine frame 1 is automatically lifted. Even if you bite a stone or the like, the blade will open due to the spring action. Not only this machine can open and close two rotary blades, but also the inverted L-shaped cutting blade H and the straight blade K come into contact with the inner angles of the cutting blades to engage the palm (Fig. 3), so that they can be pinched. The action of digging from under the roots works well and weeds can be well weeded.

[0012]

[Example] When the blade is sunk approximately 7 cm in front of the weeds scattered in the lawn that is neatly present on one side, the two blades that were in a closed state sandwiched the root and removed it almost completely. I was able to do it. Even the slightly taller wormwood could be picked up cleanly by squeezing it with the machine frame floating before sinking the blade and continuing to sink the blade.

[0013]

EFFECTS OF THE INVENTION Conventionally, only weeds generated in golf courses, gardens, and other lawns have to be weeded without damaging the turf. , Using conventional machinery, it damages the turf extensively and has only been able to stir the soil. The machine of this invention does the work of carefully uprooting and weeding, and it does it as if relying on humans while checking it with human eyes. A person can find the grass while standing and carry the machine to that position,
The operation is light and compact, so it is very small and very excellent.

[0014]

[Brief description of drawings]

FIG. 1 is a plan view of a weeder according to the present invention.

[Figure 2] Side view of the weeder

FIG. 3 is a plan view showing a structure of a rotary blade portion of the weeder.

[Explanation of symbols]

1 Machine Frame 2 Support 3 Support Plate 4 Strut 5 Wheel Support Member 8 Floating Rear Wheel 9 Spring 11 Floating Front Wheel 12, 15, 16, 17 Pulley 18 Shaft Fixing Base 181 Shaft Fixing Screw 19 Shaft 20 Rotating Plate 21 Rotating Blade Opening / Closing Member 22 rotary blade support member 211 rotary blade opening / closing member adjusting screw 221 rotary blade supporting member adjusting screw 23 rotary blade holding spring 24 rotary plate support arm 25 rotary cutting blade 25 'rotary linear blade 251 rotary blade mounting member 26 engine support frame 27 pulley support Frame 28 Sliding part 29 Elliptical hole

Claims (1)

(57) [Claims] 1. A rectangular frame 1 of a machine frame 1 is raised upward to form a handle portion, and front and rear of the machine frame 1 are provided with a floating front wheel 11 and a directional rear floating wheel 8 , respectively, and a rear wheel. The machine frame 1 can be moved up and down by the spring 9 of the column 4 .
Inside the lawn with two left and right rotary blades 25, 25 ' driven by the power from the prime mover E in the middle position of the front and rear wheels
Weeder, each part of which has the following characteristics:
It B. The rotary blades 25 and 25 'are bent at the tips alternately on either side.
It consists of a curved cutting blade 25 and a straight blade 25 '. The rotary blades 25 and 25 'are attached to the pulley 17.
Supported by the rotating plate 20 and the rotating plate supporting arm 24 which are rotated together.
The rotary blade opening / closing member 21 and the rotary blade fixed member 21 fixed to the stationary shaft 19
It is sandwiched between the rotary blade support member 22 and
It C The left and right rotary blades 25, 25 'are rotary blade opening / closing members
Due to the angular gradient of 21, the angle with respect to axis 19
The tip of the blade 25, 25 'hangs on the ground when moving forward.
The blades 25 and 25 'have narrowed tips before
Fully closed so that the edges of both blades 25, 25 'are fully closed.
Fully open at the closed position and the symmetry line passing through the center
With . D The rotary blade opening / closing member 21 and the rotary blade supporting member 22
The fixing angle to 19 is the screw 181 of the shaft fixing base 18.
Fine adjustment is performed with the screws 211 and 221. E prime mover
Power from machine E is applied to each pulley 12, 15, 16, 17 and
And the V-belt transmits and rotates to the weeding blades 25, 25 '.