JP2005229996A - Apparatus for cutting root of lawn and killing weed - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an apparatus capable of conducting both operations of killing weeds in lawn and cutting roots of the lawn for activating the lawn with the same apparatus by changing specifications thereof and switching over between them, for the purpose of avoiding effects of treading, wind, and rain on the lawn, formation of irregular areas caused by unevenness of growth, etc., and degradation with the elapse of time, while a problem of killing the weeds is not solved only by fertilizing the lawn, nor by cutting the lawn, when the lawn is grown, kept, and maintained. <P>SOLUTION: This apparatus for cutting the roots of the lawn and killing the weeds comprises a handcart, is used in the operation of cutting the roots, by arranging a rotary shaft line of a rotary drum to which blades for killing the weeds and cutting the roots are attached in the perpendicular direction to traveling of a truck of the apparatus, and further used in the operation of killing the weeds, by arranging the shaft line to be inclined at an angle of about 35° toward the perpendicular direction, wherein four wheels are attached to the truck, so that the shaft line is kept in a state of being parallel to a surface to which tires of the wheels of the truck are attached, namely, the ground surface of the lawn, and a distance between the shaft line and the surface is changeable in any of the operations. Further, the apparatus is structured so that the truck is supported by three wheels among the four wheels and the distance between the shaft line and the surface are changeable. Furthermore, the distance between the rotary shaft line of the rotary drum to which the blades are attached and the ground surface of the lawn in the parallel state is controlled, by changing a distance between one of the three supporting wheels and the ground surface, in any of the operations of cutting the roots and killing the weeds. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

Detailed Description of the Invention

This is related to the removal of weeds that grow faster than the lawn after mowing the lawn in the park, schoolyard, ground, etc., and the rooting and branching of the lawn necessary to activate the lawn to avoid lawn deterioration.

In the maintenance and management of multi-purpose lawn open spaces etc., lawn weeding with lawn weeds, including fertilization and weeds, is thorough in denying pesticide control that causes ecological environment destruction. Japanese Patent Application Laid-Open No. 2002-354978 lawn management device is known for removing weeds that grow faster than lawn after mowing. These devices do not have a function equivalent to plowing the lawn under the lawn and branching the lawn under the lawn to prevent the lawn from deteriorating. Large-scale devices that are activated by rotating the cutter, cutting the roots of the grass, cutting the roots, etc., and activating them by inserting a plurality of rod-like pins into the grass ground are already in practical use, but the devices are expensive. It is unsuitable for small-scale lawn maintenance.

Problems to be solved by the invention

An attempt was made to supply a practical hand-holding device that can be easily handled even by low-cost elderly people who are easy to produce by combining the already known lawn management device and the lawn root cutting device function necessary for avoiding lawn aging in a practical manner. Even if the rotation axis of the rotating drum axis of rotation of the comb-shaped blade is perpendicular to the traveling direction and at an angle, the wheel is parallel to the lawn surface and one of the four wheels supporting the chassis is ungrounded according to the work. If the support position is changed by operating the handle, the work can be easily performed, and the blade-mounted rotary drum can be separated from the non-working device.

Means for solving the problem

Weeding, root cutting blade mounted rotating drum, removable comb-shaped blade mounted on the side of the circumference of the disc-shaped holder, spacers in the axial direction of the rotating drum shaft, a plurality of fixed intervals, both ends A rotating drum with a blade is configured with a nut. By rotating the rotating drum shaft and keeping the blade edge at a certain height or depth with the lawn ground, each blade edge moves diagonally in the manner of combing the hair with a semicircular wavy line on the lawn ground. . It overlaps with the semi-circular wavy line of the adjacent blade edge, and the width is expanded by multiple. Further, when the rotation shaft is rotated at a right angle in the traveling direction and the blade edge is kept at a certain depth on the lawn ground, a plurality of grooves having a certain depth and a blade width can be formed at regular intervals. Mounted a rotating drum equipped with weeding and root cutting blades on an engine-equipped four-wheel moving chassis. Adjusting the height of the moving chassis with three wheels of the four wheels according to the work environment, with one wheel height support adjustment at the tip of the traveling direction During weeding and root cutting operations, the rotation axis of the rotary drum mounted on the blade is always parallel to the lawn ground so that the distance can be changed.

This will be described with reference to the drawings based on the examples. FIG. 1 is an explanatory view of a comb-shaped blade-mounted rotary drum A for weeding and root cutting. Spacer E is interposed on the rotating shaft B of hexagonal material processing, and the comb-shaped weeding and root cutting blade D is detachable with two screws on the circumferential side of the disc-shaped blade holder C, taking into account the load balance during work. Place and fix the spiral blade in a spiral shape. A plurality of disk-shaped blade holders C are arranged at regular intervals, and both ends thereof are tightened and fixed with a tightening nut F to form a blade-mounted rotating drum A. Needless to say, the center of the disc-shaped blade holder C is a hexagonal hole into which a hexagonal material of a rotating shaft is fitted. In addition, weeding and mounting two or three root cutting blades D on the circumferential side surface can be achieved by increasing the holder diameter according to the work situation.

In FIG. 2, a small gate type frame J for rotating and holding the power transmission shaft I is arranged on the driving unit G for mounting the blade-mounted rotary drum A and the portal frame H for holding the rotary drum shaft. An engine mounting base K is fixed to the upper center portion of the portal frame H, and an engine M is fixed with an anti-vibration rubber material L interposed therebetween. A V pulley N with a centrifugal clutch is connected to the engine output shaft, and both ends of the V pulley and the transmission shaft I are connected. The rotation is transmitted to the V pulley of the blade-mounted rotary drum A via the V pulley O and the V belt, respectively.

FIG. 3 is a plan view showing a state where the apparatus is completely cut. The chassis P on which the drive unit G is mounted is supported by the rear wheel left R, the rear wheel right S, the intermediate wheel T, and the wheel U in the front center for supporting the chassis on the rear side of the chassis frame Q. Is done. The support distance can be changed for the point that supports the chassis frame Q from the ground surface of each wheel tire. On the rear wheel left R, the rear wheel right S, and the intermediate wheel T, a wheel holding vertical adjustment tool V is fixed to the chassis frame Q and the chassis P is supported. The positional relationship between the rear wheel left R, the rear wheel right S, and the tire ground contact surface of the intermediate wheel T is shown in FIG. 4, and the intermediate wheel T is supported by a positional relationship of approximately 35 degrees. The front center wheel U may be located at a position where the chassis P is stabilized by supporting three wheels.

By turning the vertical adjustment knob attached to the upper part of the wheel holding vertical adjustment tool V, the support distance between the tire ground contact surface and the chassis frame Q can be changed. The wheel U in the center of the front is connected to the wheel support Y and the main height adjustment handle W by the connection shaft X. By rotating the main height adjustment handle W, the wheel U is attached to the end of the connection shaft and the wheel U is attached to the wheel support Y. While drawing an arc with the support fulcrum of the wheel as a support, the wheel U support fulcrum is pushed up from the ground surface while approaching the carriage frame side. A moving operation handle Z necessary for moving and operating the chassis is provided behind the chassis frame Q.

FIG. 5 is a side view of a rooted state where the rotary drum axis of the blade-mounted rotary drum A of the drive unit G is mounted at a right angle in the traveling direction, and a plan view is shown in FIG. FIG. 4 shows the blade-mounted rotary drum A of the drive unit G. The rotary drum shaft is supported by the angle change support point ZB and is shifted by about 35 degrees from the right angle in the direction of travel. The positional relationship parallel to the line connecting the T tire contact surface is maintained.

See FIG. 3, FIG. 4, and FIG. 5 for actual use with the above configuration. In the root cutting operation, the axis of rotation of the drive unit G and the rotary drum A of the blade-mounted rotary drum A is fixed at a right angle to the traveling direction of the chassis P, and the lawn surface, that is, the ground contact surface of the tire and the axis of the blade-mounted rotary drum A are parallel. The rear wheel left R rear wheel right S and front wheel U in the direction of travel are adjusted by the wheel holding vertical adjustment tool V so that the weeding and root cutting blade D can be kept parallel to the work surface. This is done by operating the height adjustment handle W. At this time, since the intermediate wheel T is not necessary for work or the like, the ground contact of the tire is made as far as possible from the work surface to the illustrated intermediate wheel clearance ZD distance. Next, when the engine M is started and the rotation is increased, the centrifugal clutch enters and the blade mounted rotary drum A rotates. The main height adjusting handle W is operated to push the front wheel U of the wheel support Y forward until the cutting edge of the weeding / root cutting blade D reaches a predetermined root cutting constant depth ZC. In this state, a plurality of semicircular cut grooves are formed on the lawn surface at regular intervals with a constant root cutting depth ZC and a width of the weeding / root cutting blade D. At this time, the drive-equipped chassis P can be advanced in the direction of travel even with a little external force by the force of the rotation root of the blade-mounted rotary drum A, and the manual operation control is performed at the speed at which the person pushes the moving operation handle Z and slowly walks. To do. It is possible to perform rooting work of lawn in the same way as plowing under the lawn ground with multiple rows of grooves at constant depth and blade width at regular intervals. Foreign matter on the lawn, when moving, the operation handle Z is pushed down and the blade mounted rotary drum A is temporarily deviated from the foreign matter with the tire surface of the rear wheel left R rear wheel right S as a fulcrum, and the direction can be changed to another place. I can do it. Needless to say, when the work is completed, the main height adjusting handle W can be operated to move the blade-mounted rotary drum A away from the lawn and the moving surface and move it to another place.

In the weeding operation, FIG. 4 shows the driving unit G of the blade-equipped rotating drum A, the rotation axis of the drum being rotated with the angle change support point ZB supported more than the right angle with respect to the moving direction of the chassis, and fixed by shifting about 35 degrees in the figure. The rear wheel left R and the intermediate wheel T in front of the ground, that is, the ground contact surface of the tire and the axis of the blade-equipped rotating drum A are parallel and the parallel state is maintained even when the weeding / root cutting blade D is separated from the work surface. The wheel U is operated by operating the wheel holding vertical adjustment tool V and the main height adjustment handle W, respectively. At this time, since the rear wheel right S is not necessary for the work, the tire surface is placed away from the lawn ground so as not to hinder the work. Next, the engine M is started, the rotation of the engine M is increased, the main height adjustment handle W is operated, the blade mounting rotary drum A is rotated on the lawn ground, and the cutting edge of the weeding / root cutting blade D is the predetermined height and depth of the lawn ground. The front wheel U of the wheel support Y is pushed forward until this is reached. In this state, the blade can pass through a plurality of semicircular diameters at a constant interval by stepless adjustment of the predetermined depth and height of the lawn ground. The blade mounting rotary drum A weeding and root cutting blade D will rotate the drive unit mounting platform P in an oblique direction, but it will not go sideways and can be moved straight forward with a little external force. Then, the push operation control is performed so that a person walks slowly. Depending on the progress, multiple rows of slanted semicircular striped stripes overlap with the adjacent grooves, forming a wave shape, and weeds in the lawn are caught on the blade edge while combing the hair with a comb, and the weeds are pulled It is pulled out or shredded and scattered. The stalks of the lawn and the upright stalks are inexhaustible in length and breadth, and the stems on the surface that intersect with the passage of the blade are cut, but are partial. In order to activate lawn nurturing, thickening and the like are rather preferable for thinning. Foreign matter on the lawn, when the accident occurs, depress the moving operation handle Z and move the wheel-equipped rotary drum A away from the foreign matter to another place with the rear wheel right R as the fulcrum, which is ungrounded and separated from the rear wheel left R. I can do it. Needless to say, when the work is completed, the main height adjusting handle W can be operated to move the blade-mounted rotary drum A away from the lawn and the moving surface and move it to another place.

The invention's effect

It depends on weed control that is used as a herbicide that does not wither turf and is used as a soil conditioner, and when it depends on weed control, it can contribute to environmental damage such as water quality and soil contamination, adverse effects on the ecosystem and the human body. Become. It is said that the cost is about 15 times that when using pesticides, if people rely on socially recognized lawn weed control. If the lawn is a small area, there is manual work, but in the multi-purpose lawn open space such as a place of relaxation for large area citizens, weeding is very difficult due to the budget because there are many places where weed control is difficult just by mowing the lawn. is there. Weeds grow faster than lawn after mowing, and it is impossible to remove lawn weeds in such a field, work efficiency is poor in work with the waist down, and weed removal that grows in various conditions every season Was the highest demand for weeding with a labor-saving machine, but there was no practical simple device. It is easy to operate at the speed at which the elderly walk, and the operation is very simple and the work efficiency is very good.

In addition, lawn maintenance and fertilization, mowing only by mowing, weeded debris, the surface of the lawn becomes uneven due to wind and rain, etc. Although activation is measured, not only does the maintenance cost increase, but the lawn surface is partially raised by accumulation of joints, dust, etc., and growth spots tend to occur. By switching between weeding and root cutting functions, the work is equivalent to cutting and cultivating grass roots by running the device in a grid pattern with a plurality of blades of a blade-mounted rotating drum at a distance of about 25 mm and a depth of about 30 mm. Sprouting of the stems and activation of the turf may have been rarely done after the lawn has been stretched, but the active effect appears remarkably. By weeding and root cutting, turf surface flattening and removal of dead leaves with appropriate number of dense buds will improve root ventilation and prevent disease and insect damage. The production of the equipment is as simple as the extension of the conventional lawn mower manufacturing technology, and most of the components can be covered with general-purpose products, so that it can be supplied at a low cost that meets the highest requirements, and the social contribution is great.

Blade mounted rotary drum A Drive unit G Equipment root cutting state plan view Equipment weeding state top view Side view of the device with the root cut

Explanation of symbols

A Blade-equipped rotating drum B Rotating shaft C Disc-shaped blade holder D Weeding / Root cutting blade E Spacer F Tightening nut G Drive unit H Gate frame I Power transmission shaft J Small gate frame K Engine mount L Anti-vibration rubber M Engine N V-Ple with Centrifugal Clutch V-Ple P Chassis Q Chassis frame R Rear wheel left S Rear wheel right T Middle wheel U Front wheel V Wheel holding vertical adjustment tool W Main height adjustment handle X Connection shaft Y Wheel support tool Z Movement Operation handle ZA Protective cover ZB Angle change support point ZC Root cut constant depth ZD Intermediate wheel clearance

Claims (1)

The wheel shaft ground contact surface, that is, the lawn, in any state where weed removal is carried out by pushing the rotation axis of the rotating drum with a blade for weeding and root cutting at right angles to the moving direction of the chassis and further shifting by about 35 degrees. Four wheels are arranged on the chassis so that the distance can be changed while maintaining a parallel state with the ground, and the distance can be changed by supporting the chassis with 3 wheels, so that one wheel can be supported for both root cutting and weed removal. Lawn root cutting and weed removal device, which is characterized by adjusting the distance between the rotation axis of the blade-equipped rotary drum and the lawn ground by changing the distance.

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