JP6054573B1 - Tyne and aeration equipment - Google Patents

Abstract

The present invention provides a tine for reliably cutting old grass roots and efficiently aerating grass. A main body having a discharge port opened by cutting a part of a side peripheral surface of a cylindrical body having an opening at the tip, and a tip formed in a tapered shape so as to narrow the opening at the tip of the main body A plurality of spiral strips spirally projecting from the opening to the discharge port along the inner periphery of the main body, and when the main body is stabbed into the ground, the opening from the opening The root of the turf is cut with the tip blade by twisting the turf introduced into the main body along the spiral strip. [Selection] Figure 1

Description

  The present invention relates to a tine for aeration of grass.

  On the turf planted site such as a golf course, it is necessary to perform aeration regularly as a lawn management. Aeration activates the lawn by making holes in the lawn and supplying air to the roots in the ground. As described in Patent Document 1, the invention of Tyne that cuts a lawn in a certain shape suitable for lawn regeneration is also disclosed.

Japanese Patent No. 4555194

  However, in the invention described in Patent Document 1, the tine is stabbed perpendicularly to the ground and the soil inside is discharged from the side opening, but when the old root cannot be cut at the tip of the tine, it is sufficient. There is a possibility that a hole cannot be made.

  Then, an object of this invention is to provide the tine for cut | disconnecting the old root of a lawn reliably and performing aeration of a lawn efficiently.

  In order to solve the above-described problems, the tine according to the present invention includes a main body having a discharge port opened by cutting off a part of a side peripheral surface of a cylindrical body having an opening at the tip, and A tip blade formed in a tapered shape so as to narrow the opening, and a plurality of spiral strips spirally protruding from the opening to the discharge port along the inner periphery of the main body, and the main body is grounded When the blade is stabbed into the main body, the turf introduced into the main body through the opening is twisted along the spiral strip to cut the root of the turf with the tip blade. .

  Further, the spiral strip is inclined at the tip toward the tip blade so as not to form irregularities on the tip blade.

  In addition, the spiral strip has a shape in which a straight line inclined from the longitudinal direction at an interval equal to or less than an interval between adjacent spiral strips is annularly wound.

  Further, the spiral strip is tilted by 10 to 30 degrees from the longitudinal direction.

  Furthermore, the aeration apparatus according to the present invention is characterized in that the tine is attached.

  According to the present invention, it is possible to reliably cut the old roots of the turf and efficiently aerate the turf.

It is a perspective view of the tine which is this invention. It is a top view of the tine which is this invention. It is a side view of the tine which is this invention. It is a figure which shows the use condition of the tine which is this invention. It is sectional drawing which cut | disconnected the tine which is this invention in the horizontal direction. It is an enlarged view of the front-end | tip of the tine which is this invention. It is an expanded view inside the tine which is this invention.

  Embodiments of the present invention will be described below in detail with reference to the drawings. In addition, what has the same function attaches | subjects the same code | symbol, and the repeated description may be abbreviate | omitted.

  First, the structure of the tine according to the present invention will be described. FIG. 1 is a perspective view of a tine, FIG. 2 is a plan view of the tine, and FIG. 3 is a side view of the tine.

  As shown in FIGS. 1 to 3, the tine 100 is a metal tool for piercing the ground during the aeration of the lawn to make a hole, and is formed on the cylindrical body 200 serving as a main body and the distal end side of the cylindrical body 200. The taper portion 300 and the attachment portion 220 formed on the rear end side of the cylindrical body 200 are included. For example, carbon tool steel or alloy tool steel may be processed and heat-treated.

  As shown in FIG. 1, the cylindrical body 200 has an elongated cylindrical shape with a hollow inside whose front end is open and the rear end is closed, and a discharge port 210 is opened by cutting a part of the side peripheral surface. A plurality of spiral strips 400 are formed on the inner peripheral surface of the cylindrical body 200.

  As shown in FIG. 2, the tapered portion 300 is a portion in which the distal end side of the cylindrical body 200 is tapered in a truncated cone shape so that the tine 100 can be easily stabbed into the ground. The end surface of the taper portion 300 becomes an opening 320 having a circular edge.

  The attachment part 220 is a part for attaching the tine 100 to the aeration apparatus. The aeration apparatus may be a large machine that attaches a large number of tines 100 to make holes simultaneously, or may be a small tool that makes holes manually.

  The spiral strip 400 is formed by processing the inner peripheral surface of the cylindrical body 200 to form a linear protrusion from the opening 320 to the discharge port 210 in a spiral shape. A plurality of spiral strips 400 may be provided at a predetermined interval.

  The opening 320 is an entrance for introducing soil into the cylindrical body 200 when the tip of the tine 100 is pierced into the ground. The diameter of the opening 320 is narrowed from the cylindrical body 200 to the tapered portion 300, and the tip 320 becomes a sharp tip blade 310.

  The tip blade 310 is a circular blade for cutting grass roots or the like at the edge of the opening 320 when the tine 100 is stabbed into the ground. Since the tine 100 is vertically pierced from top to bottom, the tine 100 is rotated by the spiral strip 400 and is pulled by the tip blade 310.

  The discharge port 210 is an outlet for discharging the soil introduced into the cylindrical body 200 onto the ground when the tine 100 is stabbed into the ground. As shown in FIG. 3, the discharge port 210 is formed so as to cut out the upper half from the upper part to the middle part of the cylindrical body 200 when the tine 100 is turned sideways.

  Next, the use of tine will be described. FIG. 4 is a view showing a use state of the tine, and FIG. 5 is a cross-sectional view of the tine cut in the lateral direction along AA in FIG.

  As shown in FIG. 4, the tine 100 is attached to the aeration apparatus 500, and the aeration apparatus 500 is used with respect to the ground 510 on which the turf 520 grows. The aeration apparatus 500 lowers the tine 100 vertically and pierces the ground 510 from the tapered portion 300.

  Soil containing turf 520 is introduced into the inside of the cylindrical body 200 through the opening 320 while making a hole in the soil with the tip blade 310. The soil and turf 520 rise inside the cylinder 200 while being twisted along the spiral strip 400. Since the soil and the like are discharged through the inside of the cylindrical body 200, the tip of the hole is not pressed.

  As shown in FIG. 5, the root 530 of the turf 520 in contact with the tip blade 310 rotates along the tip blade 310 at the tip of the pierced tine 100. The root 530 is cut by the tip blade 310 by applying a pulling force in addition to the pressing force in the vertical direction.

  The root 530 that has not been cut only by the vertical pressing force can be cut by the pulling force, and the tine 100 can be easily pierced into the ground 510. The soil including the grass 520 and the roots 530 is discharged from the discharge port 210, and a hole is surely formed.

  Next, the structure of the tine for more effective aeration will be described. FIG. 6 is an enlarged view of the tip of the tine, and FIG. 7 is a developed view of the inside of the tine.

  As shown in FIG. 6, in order to make it easy to cut the grass roots with the tip blade 310, the tip of the spiral strip 400 protruding from the inner peripheral surface of the cylindrical body 200 is inclined toward the tip blade 310. By making 400 thin, unevenness is prevented from occurring at the position of the tip blade 310.

  A plurality of (for example, six) spiral strips 400 are provided at equal intervals along the inner peripheral surface of the cylindrical body 200. The spiral strip 400 is a linear protrusion so that the resistance to the passage of soil or the like introduced into the inside is reduced. Moreover, it is set as the height and width required as a guide which assists soil etc. to rotate helically. The spiral strip 400 has a rectangular cross section. However, the spiral strip 400 is smoothly connected to the inner peripheral surface of the cylindrical body 200 to reduce resistance to soil and the like so that the spiral strip 400 does not deteriorate due to wear or the like. Anyway.

  As shown in FIG. 7, when the vertical cylindrical body 200 is developed and expressed in a planar shape, the spiral strip 400 is in a state where a plurality of inclined straight lines are arranged. The closer the spiral strip 400 is to the vertical, the higher the speed of passing through the inside. Therefore, the angle of the spiral strip 400 may be larger than 0 degree and smaller than 90 degrees.

  The spiral strip 400 is inclined by shifting the lower end (tip) from the vertical direction (longitudinal direction) by a horizontal distance 410. In addition, what is necessary is just to make it incline from a longitudinal direction below by making the space | interval of one spiral strip 400 and the adjacent another spiral strip 401 into the maximum distance 420. In addition, since the cylindrical body 200 is vertically long, the spiral strip 400 is preferably at an angle smaller than 45 degrees from the longitudinal direction, and more preferably at an angle inclined by 10 to 30 degrees.

  For example, when the length of the cylindrical body 200 is about 10 cm, the inner diameter is 8 mm, and the outer diameter is 12 mm, when the spiral strip 400 is inclined at an angle of about 20 degrees from the vertical direction, the internal soil or the like becomes the height of the discharge port 210. It takes almost one revolution to reach. If there are six spiral strips 400, each spiral strip 400g will reach the position of the adjacent spiral strip 401 if the soil or the like is rotated 60 degrees along the tip blade 310. Continues for one round.

  Thus, by using the tine 100, the old roots of the turf can be cut reliably and the aeration of the lawn can be performed efficiently. By making a hole in the lawn, air is supplied into the ground and the lawn can be activated. Moreover, the growth of turf can be promoted by cutting the roots of the old turf. In addition, the soil loosens and drains well, preventing turf disease.

  When aeration is performed by arranging a large number of tines, using a tine with the rods protruding in a spiral shape requires a mechanism for rotating the rods and scrapes soil around the rods. Not only is it necessary to secure a space between adjacent tines, but the soil or the like at the end of the hole is pressed and solidified with a rod, but if the tine 100 of the present invention is used, the soil or the like will move inside the cylinder 200. Since it passes efficiently, it is possible to narrow the distance between adjacent tines 100 and the tip of the hole is not compressed. By increasing the efficiency of the aeration operation, it is possible to maintain the grass satch layer so that it is not thicker than necessary.

  As mentioned above, although the Example of this invention was described, it is not limited to these. In the present invention, a plurality of spiral strips are projected on the inner peripheral surface of the cylindrical body. However, since the soil or the like in the cylindrical body may be rotated, a spiral groove may be used. Moreover, although the cross section of the spiral strip in the present invention is rectangular, other shapes such as a triangle may be used. Furthermore, the spiral shape in the present invention is a straight line shape when unfolded, but may be another shape such as a curved line shape.

DESCRIPTION OF SYMBOLS 100: Tine 200: Cylindrical body 210: Discharge port 220: Attachment part 300: Tapered part 310: Tip blade 320: Opening part 400: Spiral strip 401: Spiral strip 410: Horizontal distance 420: Maximum distance 500: Aeration apparatus 510: Ground 520: turf 530: root

Claims (5)

A main body in which a discharge port is opened by cutting a part of a side peripheral surface of a cylindrical body having an opening at a tip;
A tip blade formed in a tapered shape so as to narrow the opening at the tip of the main body;
A plurality of spiral strips spirally projecting from the opening to the discharge port along the inner periphery of the main body,
When the main body is stabbed in the ground, the turf introduced into the main body through the opening is twisted along the spiral strip to cut the base of the turf with the tip blade.
Tyne characterized by that. The spiral strip is inclined toward the tip blade at the tip so as not to form irregularities on the tip blade.
The tine according to claim 1. The spiral strip has a shape in which a straight line inclined from the longitudinal direction at an interval equal to or less than an adjacent spiral strip is wound in an annular shape,
The tine according to claim 1 or 2, wherein The spiral strip is inclined 10 to 30 degrees from the longitudinal direction,
The tine according to any one of claims 1 to 3, characterized in that: The tine according to any one of claims 1 to 4 is attached.
An aeration apparatus characterized by the above.

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