JP7412816B1 - Tip part of ground-mounted anchor type fixture - Google Patents

Abstract

An object of the present invention is to provide a tip member 20 of a ground-installed anchor-type fixture that can be easily installed by digging into the ground, and can be more appropriately fixed to the ground as an anchor. [Solution] A ground surface is formed in a substantially spiral shape on the outer circumferential surface of an elongated body 10 with a circular cross section so that the main body 10 has a circular cross section so as to be installed by cutting into the ground by rotating around an axis. A tip member 20 of a ground-installed anchor-type fixture fixed to form a tip of the ground-installed anchor-type fixture provided with a biting portion 13, which is continuous with an elongated main body 10 having a circular cross section. a circular base 21 that is fixed to the circular base 21; a conical main body 22 that is pointed toward the distal end from the circular base 21; A linear protrusion 30 is integrally provided in a form that protrudes outward between the cone and extends linearly along the generatrix of the cone. [Selection diagram] Figure 1

Description

This invention provides a ground-cutting part formed in a substantially spiral shape on the outer circumferential surface of an elongated main body having a circular cross-section so that it can be installed by cutting into the ground by rotating around an axis. The present invention relates to a tip member of a ground-mounted anchor-type fixture that is secured to form a tip of the ground-mounted anchor-type fixture provided with an opening.

Conventionally, piles in the technical field similar to ground-mounted anchor-type fixing devices include a shaft tube made of a steel pipe with at least one spiral wing spirally protruding from the outer periphery near the tip, and a shaft tube with an outer diameter larger than the inner diameter of the shaft tube. The inner tube is made of a slightly smaller steel pipe, and the other side of the bottom plate with at least one excavated piece protruding from one side is fixed to the tip, and the inner tube is inserted into the shaft tube with the excavated piece directed toward the tip side of the shaft tube. A steel pipe pile (Patent Document 1) has been proposed.

In addition, conventionally, as a pile in a technical field similar to a ground-mounted anchor type fixture, a first tapered part is formed in the pile body, the diameter of which becomes smaller toward the tip, and the tip side of this first tapered part Next, a second tapered part is formed which has a continuous shaft diameter with the first tapered part, has a larger taper angle, and whose shaft diameter becomes smaller toward the tip thereof. Further, a spiral rotor blade is formed in the first tapered portion, and a digging blade is formed in the second tapered portion. When the ground is excavated with this rotary penetrating pile, the boulders in the earth and sand are removed from the vicinity of the tip of the rotary blade by contact with the excavation blade and the second tapered part, so that the excavation is obstructed by the boulders. Not done. Further, since a part of the earth and sand between the blades is pushed out to the outside in the radial direction of the shaft center by the first taper part, the earth and sand is less likely to become clogged between the blades, and the excavation efficiency does not decrease (Patent Document 2) Rotary Penetrating Pile is proposed.

Japanese Patent Application Publication No. 2003-176535 (page 1) Japanese Patent Application Publication No. 2009-91807 (page 1)

The problems to be solved regarding the tip member of a ground-mounted anchor-type fixture are that, compared to the member that makes up the tip of a conventional pile, it is easier to install because it digs into the ground more easily, and it can be more properly fixed to the ground as an anchor. The problem lies in the fact that nothing that can be done has been proposed.
There is a particular thing.

SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a tip member of a ground-installed anchor type fixture that can be easily installed into the ground, and can be more appropriately fixed to the ground as an anchor.

The present invention includes the following configuration to achieve the above object.
According to one embodiment of the tip member of the ground installation anchor type fixture according to the present invention, the tip member is attached to the outer peripheral surface of the elongated main body with a circular cross section so that it is installed by biting into the ground by rotating around the axis. A tip member of a ground-mounted anchor-type fixture that is secured to form a tip of the ground-mounted anchor-type fixture that is provided with a substantially helically formed ground-penetrating portion for biting into the ground. a circular base continuously fixed to the elongated main body having a circular cross section; a conical main body that is pointed toward the distal end from the circular base; and a conical main body on the outer surface of the conical main body. It is provided with a linear protrusion that is integrally provided in a form that protrudes outward between the maximum outer diameter part and the top of the cone, and extends linearly along the generatrix of the cone.

According to one embodiment of the tip member of the ground installation anchor type fixing device according to the present invention, the shoulder portion of the linear protrusion portion, which is the portion of the conical maximum outer diameter portion that protrudes most outwardly; The elongated main body having a circular cross section may be protruded outward from the outer circumferential surface of the elongated main body, and may be provided so as not to protrude outward from the outer diameter portion of the ground biting portion.

According to one embodiment of the tip member of the ground installation anchor type fixture according to the present invention, the height at which the linear protrusion portion projects outward from the outer surface of the conical main body portion is such that The conical shape may be characterized in that the conical shape is tapered and gradually lowered from the maximum outer diameter portion toward the top of the conical shape.

According to one embodiment of the tip member of the ground-mounted anchor type fixture according to the present invention, the linear protrusions are provided at three positions equally divided on the circumference of the outer surface of the conical main body. It can be a feature.

According to one embodiment of the tip member of the ground installation anchor type fixture according to the present invention, the elongated main body having a circular cross section is provided in a cylindrical shape with a hollow portion into which a rod-like body can be inserted; It can be characterized in that it is fixed to the tip of the elongated main body so as to close the hollow part.

The tip member of the ground-installed anchor-type fixture according to the present invention has the particularly advantageous effect of being able to more easily dig into the ground, making it easier to install, and more appropriately fixing it to the ground as an anchor.

It is a front view showing an example of the form of the tip member of the ground installation anchor type fixing device concerning the present invention. FIG. 2 is a rear view of the embodiment of FIG. 1; FIG. 2 is a plan view of the embodiment of FIG. 1; FIG. 2 is a bottom view of the embodiment of FIG. 1; FIG. 2 is a left side view of the embodiment of FIG. 1; FIG. 2 is a right side view of the embodiment of FIG. 1; FIG. 2 is a front view of the ground-mounted anchor-type fixture for explaining the state of use of the embodiment of FIG. 1; FIG. 8 is a plan view of the embodiment of FIG. 7; FIG. 8 is a right side view of the embodiment of FIG. 7; 8 is a front view center vertical section of the embodiment of FIG. 7; FIG.

Hereinafter, embodiments of the tip member of the ground-mounted anchor type fixture according to the present invention will be described in detail based on the drawings (FIGS. 1 to 10).

The tip member 20 of the ground installation anchor type fixture according to the present invention is attached to the outer circumferential surface 11 of the elongated main body 10 with a circular cross section so that it is installed by biting into the ground by rotating around the axis. It is provided as a member to be fixed to form the tip of a ground-mounted anchor-type fixture provided with a substantially helically formed ground-biting portion 13 for biting. Note that the ground digging portion 13 shown by dotted lines in the examples of the ground installation anchor type fixtures in FIGS. 7 and 9 to 10 has a continuous spiral shape, but the shape is not limited to this. , for example, may be formed intermittently in a spiral shape.

Further, as shown in FIGS. 1 to 6, the tip member 20 of the ground-installed anchor type fixture according to the present invention includes a circular base 21 that is continuously fixed to the elongated main body 10 with a circular cross section, and It has a conical main body part 22 that is pointed from the base part 21 to the distal direction. The circular base 21 of this embodiment has substantially the same outer diameter as the elongated main body 10 with a circular cross section, has a required thickness in the direction of extension of the axis, and has a low height cylindrical shape. is formed. Further, in this embodiment, the circular base 21 having the required thickness is continuously fixed to the end of the elongated main body 10 with a circular cross section by welding, but the present invention is not limited to this. Instead, it is also possible to fix it to the end of the elongated body 10 having a circular cross section using a screw, and it goes without saying that known fixing means can be selectively used as appropriate.

As shown in FIGS. 1 to 6, the tip member 20 of the ground-mounted anchor-type fixture according to the present invention has a maximum outer diameter portion of the conical portion on the outer surface 23 (conical side surface) of the conical main body portion 22. 24 (outer diameter of the bottom surface) to the top 25 of the conical shape, and is integrally provided in a form that projects outward and extends linearly along the generating line 26 of the cone (see FIG. 6). It has a striped protrusion 30. In this embodiment, the linear protrusion 30 is cut off from a required portion near the tip of the cone. Even if the striped protrusion 30 is provided near the tip of the cone, the effect of loosening the ground is small, and in this embodiment, the striped protrusion 30 is integrally fixed to the conical main body 22 by welding. However, this is because it is difficult to weld near the tip of the cone, and the shape is not particularly limited to this, and the length, thickness, etc. may be set as appropriate.

According to the tip member 20 of this ground-installed anchor-type fixture, when the ground-installed anchor-type fixture is bitten into the ground, the linear protrusion 30 properly covers the required diameter range so as to make a hole in the ground. It acts to loosen the elongated body 10, which has a circular cross section and is continuous with the tip member 20, so that it can be burrowed into the ground. That is, since the outer surface 23 of the conical main body part 22 is provided with the linear protrusion part 30 extending linearly along the generatrix 26 of the cone, the force for screwing in the ground-mounted anchor-type fixing device is reduced. It acts to receive appropriate resistance for drilling a hole in the ground, and has the particularly advantageous effect of being able to penetrate into the ground more easily, making it easier to install, and being more appropriately fixed to the ground as an anchor.

In addition, in the tip member 20 of the ground-mounted anchor type fixture of this embodiment, the shoulder portion 31, which is the portion of the linear protrusion 30 that is on the side of the conical maximum outer diameter portion 24 and protrudes most outwardly, It is provided so as to protrude outward from the outer circumferential surface 11 of the elongated main body 10 having a circular cross section and not to protrude outward from the outer diameter part 14 of the ground biting part 13.

That is, the linear protrusion 30 in which the shoulder portion 31 is formed acts to loosen the ground within a suitable diameter range to create a hole into which the elongated main body 10 with a circular cross section can enter. On the other hand, since the spiral ground-biting part 13 does not dig into and unfasten the underground part excessively, the spiral ground-biting part 13 bites firmly into sand or soil underground. act to become a state. According to this, the ground-mounted anchor type fixture can be easily installed on the ground, and can be reliably and firmly installed and fixed as an anchor so that it will not easily be pulled out from the ground.

In addition, in the tip member 20 of the ground-mounted anchor type fixture of this embodiment, the height at which the linear protrusion 30 projects outward from the outer surface 23 of the conical main body 22 is the same as that of the conical main body 22. It is provided so as to be tapered gradually from the maximum outer diameter portion 24 toward the conical top portion 25 .

According to this, the force for making a hole in the ground by the linear protrusion 30 is applied from the distal end side of the linear protrusion 30 to the conical bottom surface of the conical main body 22 (the conical bottom surface of the conical main body 22 It can be made to act so as to gradually increase in size toward the maximum outer diameter portion 24). That is, according to the linear protrusion 30, the force for making a hole in the ground is transmitted smoothly so as to gradually increase from the tip side of the conical shape, so that the force to make a hole in the ground is transmitted continuously to the tip member 20. The elongated main body 10 having a circular cross section can be smoothly inserted into the ground, and the ground anchor type fixture can be easily installed on the ground.

Further, in the tip member 20 of the ground-mounted anchor-type fixture of this embodiment, the linear protrusions 30 are provided at three positions equidistant on the circumference of the outer surface 23 of the conical main body 22. That is, a plurality of striped protrusions 30 are provided at symmetrical positions (three locations in this embodiment) on the outer surface 23 of the conical main body 22, and when biting into the ground, each striped protrusion 30 is provided as substantially as possible. It works by transmitting force evenly so that the axis of the ground-mounted anchor-type fixing device properly digs into the ground without shaking in an upright state.

According to this, the three striped protrusions 30 can transmit the force for making a hole to the ground in a well-balanced manner, so that it is possible to more smoothly pick the hole as if making a hole in the ground, and it is possible to set the hole on the ground. The anchor type fixture can be properly installed and fixed in the inserted state by screwing it into the ground.

Further, in the tip member 20 of the ground-mounted anchor type fixture of this embodiment, as shown in the embodiments of FIGS. 7 to 10, the elongated main body 10 with a circular cross section includes a hollow portion 12 into which a rod-shaped body can be inserted. It is provided in a cylindrical shape, and is fixed to the tip of the elongated main body 10 having a circular cross section so as to close the hollow part 12. Note that the elongated main body 10 having a circular cross section in this embodiment is made of a cylindrical steel pipe material (straight pipe).

According to this, it is possible to rationally and appropriately manufacture a ground-mounted anchor type fixture that can erect a support for a flag, tent, tarp, or the like.

Next, a method of using an embodiment of a ground-installed anchor-type fixture (see FIGS. 7 to 10) in which the distal end member 20 of the ground-installed anchor-type fixture according to the present invention is fixedly provided at the tip will be described.

This type of ground-mounted anchor-type fixture is installed on the earthen ground or sandy ground such as a sandy beach, and is used for multiple purposes such as fixing or mooring objects such as tents, tarps, canoes, and small boats. It is a fixture that can be used for In addition, this ground-mounted anchor type fixture can also be used to erect poles for flags, tents, tarps, etc., and the lower end of the pole is inserted to support the cylindrical body (circular in cross section). A long main body 10) is provided, and a nut-like screw portion with a hexagonal head 15 is provided on the upper part of the cylindrical main body, and a helical ground cutting part (for ground cutting) is provided on the outer periphery of the cylindrical main body. Section 13) is provided.

In this ground-installation anchor type fixture, an adapter is fitted into the hexagonal head 15 from above, and the adapter is pressed down from above with an impact wrench (power tool) connected to it and screwed into the ground. can be fixed to. For example, by fixing it to the ground on a sandy beach, it can be used to moor a small boat or the like using a rope or carabiner. Furthermore, when setting up a tent or sheet, it is possible to prevent the tent or sheet from flying away either directly or via a rope, carabiner, or the like. In addition, when fixing or mooring an object via a rope, a carabiner, etc., it is possible to utilize a washer-shaped portion (washer-shaped portion 16) and a hole 17 that can be provided in that portion. Further, an eye bolt can be screwed using the nut-like thread part of the hexagonal head 15, and the eye bolt can also be used to tie a rope or hang a carabiner.

Although the present invention has been variously explained above using preferred embodiments, the present invention is not limited to these embodiments, and can also be used as a tip member of a pile to be buried underground. Of course, many modifications can be made without departing from the spirit of the invention.

10 Long body with circular cross section 11 Outer circumferential surface 12 Hollow part 13 Ground-biting part 14 Outer diameter part 15 Hexagonal head 16 Washer-shaped part 17 Hole 20 Tip member of ground-mounted anchor type fixture 21 Circular base 22 Conical main body Part 23 External surface 24 Maximum outer diameter of cone 25 Top of cone 26 Generator of cone 30 Linear projection 31 Shoulder

Claims (5)

A ground digging part formed substantially in a spiral shape is provided on the outer peripheral surface of the elongated body with a circular cross section so that it can be installed by biting into the ground by rotating around an axis. a distal end member of a ground-mounted anchor-type fixture fixed to form a distal end of the ground-mounted anchor-type fixture;
a circular base portion continuously fixed to the elongated body having a circular cross section;
a conical main body portion that is pointed from the circular base toward the distal end;
An integral part is formed on the outer surface of the conical main body in a form that protrudes outward between the maximum outer diameter of the conical part and the top of the conical form, and extends linearly along the generatrix of the conical part. 1. A tip member of a ground-installed anchor-type fixing device, characterized in that the tip member includes a linear protrusion provided on the ground. A shoulder portion of the linear protrusion portion, which is a portion of the conical maximum outer diameter portion that protrudes most outwardly, is protruded outwardly from the outer circumferential surface of the elongated main body having a circular cross section; The tip member of a ground-installed anchor type fixture according to claim 1, wherein the tip member is provided so as not to protrude outward beyond the outer diameter portion of the ground-biting portion. The height at which the linear protrusion protrudes outward from the outer surface of the conical main body gradually tapers from the maximum outer diameter of the conical shape of the conical main body toward the top of the conical shape. The tip member of a ground-mounted anchor type fixture according to claim 2, characterized in that it is provided so as to be lowered. 4. The tip member of a ground-mounted anchor type fixture according to claim 3, wherein the striped protrusions are provided at three positions equally spaced on the circumference of the outer surface of the conical main body. The elongated main body with a circular cross section is provided in a cylindrical shape so as to have a hollow part into which a rod-like body can be inserted, and the elongated main body with a circular cross section is fixed to the tip of the elongated main body so as to close the hollow part. The tip member of a ground-mounted anchor type fixture according to claim 4.

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