JP2002354978A - Apparatus for maintaining lawn - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an apparatus by which removal of weeds without using a herbicide which is not solved only by mowing a lawn and planarizing and weeding of a lawn ground by mowing the lawn at a constant height at an uneven part caused by treading or wind and rain can be carried out with a saved labor in raising and maintenance of the lawn at a park, etc. SOLUTION: This apparatus comprises stroking the root side of the lawn by running the apparatus when finishing the work, driving two pairs of rotating drum shafts attached with a plurality of comb-shaped blades while tilting within the range of about 45 to 60 deg. to the running direction of the shafts when defining the ground plane of wheels as a reference plane, cutting the lawn and weeds with the preceding rotating drum at a constant height from the reference plane to an oblique pattern at a plurality of wavy lines and plowing the underground of the lawn with the other rotating drum at a constant depth from the reference plane to the oblique pattern at a plurality of the wavy lines to remove the weeds while cutting the excess lawn and the weeds, leaving the lawn like beating the air and planarizing the protruded part of the lawn ground.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION Turf cultivation is managed in parks and the like, but the turf surface becomes uneven due to the breeding environment and stepping in. In addition, weeds that grow every season are not easy to remove by relying on humans who do not kill the turf with herbicides and germination inhibitors. The present invention relates to an operation for flattening a turf ground surface after turf and weeds have been cut, and for removing weeds while leaving the turf.

[0002]

2. Description of the Related Art Stadiums requiring extensive lawn management,
At a golf course, etc., a device similar to a cultivator under a lawn surface, a drum equipped with a plurality of comb-toothed blades spaced at intervals of 7 to 10 mm is rotated in a direction perpendicular to the rotation axis, and a plowing operation is performed. The lawn is then leveled with a lawn mower to a certain height. It was known that weeds were partially blown away by attaching a plowing blade to the drum, but small weeds slipped through between the blades and were not effective. Herbicide that does not kill turf, turf management that denies the use of germination inhibitors has been the eternal theme of labor saving of weeds growing in lawn. Lawn management for small-scale areas is full of lawn mowing, lawn mowers are leveled by putting soil in the concave parts, uniformity of the turf surface is raised, convex parts are repositioned down, weed removal is manual, lawn mowing only in places where there is no budget The lawn is uneven and weeds are remarkable.

[0003]

In a multi-purpose lawn open space or the like, it is inevitable that the surface of the lawn is made uneven due to the effects of the growing condition of the lawn, treading, weeds, wind and rain. Herbicides that do not kill turf, germination inhibitors, etc. Cut the grass of the convex part that was made partly, remove the soil on the ground with the inside out and return it to the original level,
The concave parts are required to be flattened by filling in the ground, or to reduce the labor of partially re-turfing, and to achieve the highest level of flatness using simple equipment.

Also, weeds have roots and growing points below the mowing surface, and weeds with vitality thrive earlier than grass.
There is a limit to manual weeding in which the seasons are different and the seasons are limited. In ball games such as gate balls, putter golf and grand golf courses where flattening of the lawn is required, the rolling of the ball may be prevented by uneven grass and weeds growing on the grass surface, so that the lawn is in good condition, only for management It is preferable to provide a general-purpose management device that can be easily used without using a machine.

According to the present invention, two sets of rotary drums with cutting blades are inclined in the direction of travel of a device on a lawn surface on which a weed with irregularities has been grown on the grass crest and the upright stem.
On the other hand, lawn and weeds are cut diagonally at a certain width and height. On the other hand, we determine the nature of the turf and plow diagonally below the ground with a fixed width and combing hair. The lawn mowing surface is roughly flattened, and then a part of the turf is cut by plowing to activate the lawn while reducing the height of the protruding portion, thereby enabling the flattening of the turf surface. Plunging diagonally across multiple rows of wavy lines at a fixed width below the surface of the lawn in millimeters, the lawn is pressed against the curtain and only weeds can be removed. The purpose is to provide a weed removal device that grows in the lawn while flattening the ground while mowing the lawn.

[0006]

[Means for Solving the Problems] Upright stems are grown up by roots of cheeks extending endlessly on the grass surface. The stem is wire-like and relatively hard, and moves under the lawn with a rotating drum-shaped rake of a threshing machine while plowing diagonally. Where the forearm stem is perpendicular to the rake,
The crests and upright stems remain on the curtain, and the relatively soft weeds are caught like a rake, and the small weeds grow to the roots. The point is scraped off and scattered. The growing point of the turf is at the rising part of the upright stem, so it is not easily damaged.

[0007] The rakes and projections of one of the rotating drums are comb-shaped projections for combing hair, and a plurality of disk-shaped holders having one or more blades are provided on the rotating drum at regular intervals in the drum axis direction. The projection is attached in a spiral or multiple spiral manner, and the rotation axis of the rotating drum is inclined in a range of about 45 degrees to about 60 degrees with respect to the traveling direction of the device. It becomes possible to weed and to weed by plowing the turf under the oblique stripe pattern of multiple wavy lines during the operation of the device. The spacing between the plows is determined by the combination of the number of rotations and the number of blades of the rotating drum and the speed of the movement of the apparatus. When plowing the lawn, the blade does not need to be sharp and only needs to be durable.

Further, the other rotating drum is attached to the apparatus in the same manner as described above, and the blade of the projection is formed in the same form as that of the mowing blade of a known weeding machine. Or, attach them in a multiple spiral shape. A rotary drum configuration using a grooving circular saw blade for general-purpose woodworking may be used. It is possible to cut grass and weeds with a fixed width and height on the lawn surface with a multi-line wavy diagonal stripe pattern. From this, the two sets of rotating drums are simultaneously rotated, and the preceding one is used exclusively for cutting grass and weeds, and the other is used for flattening and weeding the entire surface of the turf ground in millimeters. Can be used.

[0009]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a plan view, FIG. 2 is a side view, and FIG. 3 is an explanatory view of a blade-mounted rotary drum. The blade-mounted rotary drum YZ shown in FIG.
The structure is the same as the rotary drum Y for cutting weeds and the rotary drum Z for weeding. Since the purpose of use is different, the names are distinguished into Y and Z. Comb-shaped blade X that can be fixed and detached with two screws X
Are mounted on a disc-shaped holder W, and a plurality of spacers U are interposed in the axial direction of the rotary drum shaft V to form a rotary drum YZ with a plurality of blades fixed at both ends at fixed intervals and nuts at both ends of the shaft. A screw hole T is provided on the outer peripheral portion of the disc-shaped holder W so that a plurality of comb-tooth-shaped blades X can be mounted, and a hexagonal hole is formed in a center portion to fit with a mounting shaft in preparation for a work environment. Prevent rotation stop during rotation. Normally, only one comb tooth-shaped blade X is mounted on the disk-shaped holder W, and the blades are illustrated and spirally mounted on the rotating drum in order to achieve a sufficient load during the work. Alternatively, a comb-shaped blade X can be added to the outer peripheral portion of the disk-shaped holder W to make the rotary drum mounting blade a double spiral shape. The outer diameter of the disc-shaped holder W is desirably a dimension capable of mounting about two comb-tooth-shaped blades X. The mounting interval is such that a semicircular wavy line in which the cutting edge is plowed below the turf surface in a diagonally proceeding manner, and a semicircular wavy line of an adjacent cutting edge is formed. Decide so that it partially overlaps the wavy line.

The rotary drum YZ mounted on the blade is held by a frame F.
An embodiment in which the rotation axis is inclined with respect to the traveling direction by about 5 degrees will be described with reference to FIGS. A device with moving wheels, a cart B for rotatably supporting wheels A at four corners, a rotating drum Y for cutting grass and weeds, a rotating drum Z for weeding and weeding ground, a ground copying wheel G, and a plowing depth adjusting screw H The cutting height adjusting screw E, the idler I, the power transmission shaft J, and the engine K are collectively held by the frame F. In the middle of frame F and bogie B,
With the frame left / right swinging support L interposed, the frame left / right swinging axis and the fulcrum N, and the vertical swinging part fulcrum M, the frame F on the carriage B is used as the vertical swinging part fulcrum M, and the vertical and frame left / right swinging axes are used. And the fulcrum N to support swinging up and down and left and right. When the bogie B separates from the working ground during the movement of the uneven surface, the ground F is swung by two sets of ground copying wheels G, and the frame F can be swung. Is generally maintained in the intended working environment. Since the blade-mounted rotary drum YZ hinders the movement of the carriage B during non-working time, a movement retracting hook C is provided, and the end of the frame up-down / left-right swing support portion L is set to the standby position by operating the reset lever S to avoid the movement obstacle. I do.

The output of the engine K is transmitted from a pulley with a centrifugal clutch to a power transmission shaft J via a V-belt.
V-belts are transmitted to the rotating shafts of the weed cutting rotary drum Y and the ground plowing rotary drum Z. The number of revolutions of the rotary drum Z for ground plowing and weeding is related to the distance between running and plowing.
The rotation speed of the rotary drum Y for cutting turf and weeds increases as the peripheral speed of the cutting edge increases, because a mowing effect can be obtained. The operation handle necessary for the operation, the safety protection cover of the drive system of the blade-mounted rotary drum, and the like are not shown, but it goes without saying that they are mounted. In addition, self-propelled equipment, when working unless the equipment becomes large,
The load is light even when pushed or pulled by human power, and can be handled at about half the speed of walking by a person.

With the above configuration, the apparatus is actually used by moving the frame up and down and left and right swing support parts L up to the lawn where weeds grow.
Moved with the end set to the movement standby hook S standby position. Reset the movement retracting hook S, take the blade edge of the ground plowing weeding rotary drum Z into rotation about 0 to 7 mm below the lawn contact surface of the ground copying wheel G in consideration of the state of the lawn, and adjust the plowing depth adjusting screw. Adjust with H and secure plowing depth P. Next, the lock screw of the cutting height adjustment fulcrum D is loosened, and the cutting height Q at the time of rotation of the turf and weed cutting rotary drum Y is determined to be about 10 to 20 mm by adjusting the cutting height adjustment screw E. When the engine K is started and the rotation speed is increased, the centrifugal clutch is engaged and power is transmitted. The rotating drum Y for cutting grass and weeds, and the rotating drum Z for ground plowing are rotated, but in the same place, the cutting edge crosses above and below the lawn surface, but the wavy line having a semicircle diameter in the vertical direction, and the number of disk-shaped holders W are oblique. It only makes a plow line. By moving the cart B in the direction of the arrow, it is possible to cut grass and weeds in a wide width in the form of a plurality of wavy lines in an oblique stripe pattern, and to plow the ground.

As the work of plowing the ground progresses, the ground copying wheel G plows the edge of the roughly flat turf, which is a standard for cutting, so that substantially stable work is possible as long as the copying wheel does not fall into the concave portion. When there is one comb-shaped blade X on the disc-shaped holder W with the ground plowing weeding rotary drum Z, the plowing interval is set to about twice the blade thickness per rotation, and two comb-shaped blades X are used. At that time, the possible movement speed is doubled. A moving speed suitable for the number of rotations is desirable. When the speed of the rotating drum Y for cutting grass and weeds is increased and the number of the comb-shaped blades X is increased in the disc-shaped holder W, the cut intervals are eliminated and the cutting drums overlap. It goes without saying that the peripheral speed and height of the cutting edge for cutting grass and weeds, and the peripheral speed and depth of the cutting edge for plowing the ground during work depend on the working environment.

[0014]

According to the present invention, the use of turf herbicides and germination inhibitors in lawn weeding contributes to environmental destruction and adverse effects on the human body. It is said that it takes about In a multipurpose lawn open space with a large area, there are many places where weeding can not be done due to budgetary reasons only by lawn mowing, and rescue in which lawn weeding is remarkable is possible. It is possible to cope with a large area by moving the device with a conventional traction device by arranging a plurality of devices in a staggered manner. In addition, if a rotary drum for weeding and weeding is installed in front of the mobile trolley with the ground surface of the wheel as the reference surface, only a mowing and plowing height adjustment is necessary. Work similar to flattening work becomes possible, and a riding work type becomes possible.

In ball games such as gate balls, putter golf, and ground golf courses that require flattening of the ground, which cannot be solved only by mowing the lawn, the rolling of the ball is prevented by irregularities on the lawn and weeds growing on the lawn surface. There is. The concave part can be partially raised by filling in the soil, but the convex part can be eliminated by removing the soil under the ground and replacing the part of the lawn or lawn, even if the convex part of the lawn is partially shaved, the ground surface appears and the flattening bulk It does not fall below. Practical removal of convexities on the ground, which was the highest requirement, and weeding have a comb-shaped structure.
The blade is inclined about 60 degrees from the ground, and the cutting edge of each lawn is cut in a diagonal striped pattern with multiple wavy lines under the lawn mower and lawn, and the lawn mower and lawn mower are plowed. Similar structure can be achieved with a simple and inexpensive device. It is remarkable that environmental protection of pesticide avoidance, efficiency of leveling work and reduction of weeding costs relying on humans are remarkable.

The apparatus can be produced and supplied as an extension of the conventional lawn mower manufacturing technology. Comb-shaped blades, which are treated as consumables, do not require sharpness. Plowed comb-shaped blades are easy to produce from a flat plate and can be supplied at low cost. Turf and weed cutting comb-shaped blades can be shared with plowing blades. Also, blades for cutting grass and weeds can be used as small-sized general-purpose grooving circular saw blades for woodworking. In parks, etc., there are many people coming and going, what is on the lawn surface, you may not know what is left, do not damage even if you flip obstacles, do not hinder work even if damaged There are many blades with a wide blade width General-purpose products can be selectively used. Conventional rotary and reel systems for cutting lawn and weeds have no effect of flattening the ground merely by cutting to a fixed height of the ground, and do not allow thinning of grass. It can be effectively used for turf cultivation in a multi-purpose lawn open space in which turf honey thinning and dead leaf slashing, ventilation at the base of the turf is improved, and pest and insect damage prevention effects are secondary.

[Brief description of the drawings]

FIG. 1 is a plan view

FIG. 2 is a side view

FIG. 3 Rotary drum with blade mounted

[Explanation of symbols]

 Reference Signs List A wheel B cart C moving evacuation hook D cutting height adjustment fulcrum E cutting height adjustment screw F frame G ground copying wheel H plowing depth adjustment screw I idler J power transmission shaft K engine L frame vertical swing support M Vertical swing part support point N Frame left and right swing axis and fulcrum P Plowing depth Q Cutting height S Set reset lever Y Rotary drum for cutting turf and weeds Z Rotary drum for ground plowing weeding X Comb tooth blade W Disk Holder V Rotary drum shaft U Spacer T Screw hole YZ Blade mounted rotary drum

Claims (1)

[Claims] The driving drum moves two sets of rotary drums each having a blade with a ground surface of a ground-following wheel and a ground surface of a lawn as a reference surface. Weeds are cut in oblique stripes with multiple wavy lines, and the other rotating drum is plowed in a diagonal stripe pattern below the turf ground surface at a constant depth from the reference plane with multiple wavy lines, cutting grass and weeds A lawn management device that removes weeds while flattening the convex parts of the ground and leaving the combined turf.