JPH08136258A - Steel mark stick and its manufacture - Google Patents

Abstract

PURPOSE: To provide a steel mark stick to satisfy functions demanded as mark stick flexibly. CONSTITUTION: Legs 13a, 13c, 13b and 13d as hollow steel cylindrical bodies are welded on the rear sides of steel plate-shaped bodies 12a and 12c or lid- shaped bodies 12b and 12d having recesses 15a-15d corresponding to marks formed on the upper surfaces. Marker plates 12a-12d as generic product for those mentioned above and the legs 13a-13d are made of stainless steel and feature toughness and excellent anticorrosion. The legs 13a-13d are hollow and easy to handle with a lighter weight. The legs 13a-13d are also allowed to mount anchors 17a and 17b as lock against slipping off when buried. Being opened inside, the legs 13a-13d have a limited sectional area of the tips to facilitate the driving into the soil as intact. The recesses 15a-15d are baked with a durable pigment to color, thereby achieving a clear display as marker.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a steel marker pile which is buried in the ground to display a boundary of a land or a buried object in the ground, or a display sign for a building or various pipes inside and outside the building. And a manufacturing method thereof.

[0002]

2. Description of the Related Art Conventionally, various marker piles as shown in FIG. 26 have been used for borders of countries, prefectures, municipalities, private lands, etc. in cities, private residential land, fields, mountainous areas, mountains, coastal areas, islands, etc. Temporary display at the time of land survey of, roads such as concrete, asphalt and gravel, railways, bridges, construction, electricity, gas,
Widely used for various indications associated with water supply, cable burial, etc. In the marker pile 1 shown in FIG. 26 (a), the threaded portion 3a at the upper end of the foot 3 embedded in the ground or a building such as a building is screwed into the mounting portion 2a on the back surface of the marker plate 2 left on the surface of the earth. The tip 3b of the foot 3 is tapered for the convenience of driving into the ground. The signboard 2 is generally made of concrete or synthetic resin, and may be made of metal, such as aluminum and its alloys, gun metal, etc., and symbols such as letters and arrows and combinations thereof. A recess corresponding to the sign to be displayed including, etc. is formed,
The inside of the recess is colored. The foot 3 is often made of steel including brass and stainless steel. FIG.26 (b) shows the pile-shaped marker pile 4. As shown in FIG. The upper surface of the marker pile 4 is a display portion 4a for displaying a marker, and the body portion 4b has a columnar shape, and a conical portion 4c is formed at the tip thereof, which is convenient for driving into the ground. There is. Such an integrated sign pile 4 is
In general, it may be formed by using recycled products of concrete and synthetic resins, especially various synthetic resins that have become industrial waste. FIG. 26C shows the land boundary mark 5 for embedding. The land boundary mark 5 is made of reinforced concrete, and as shown in FIG. 27, has a reinforcing bar 6 inside. A display portion 5a is formed on the upper surface, and a retaining (and rotation preventing) portion 5c is formed at the tip of the columnar portion 5b. Such a land boundary mark 5 may be formed by using stone, for example, granite also called granite. The standard size is 10 cm square × 75 cm long, and in FIG. 27, the length L1 of the columnar portion 5b is 65 cm, the height L2 of the retaining portion 5c is 10 cm,
Buried depth L3 = 60 cm, and length L of the retaining portion 5c
4 = 30 cm. The weight is 50 to 60 kg.

[0003]

Problems to be Solved by the Invention FIGS. 26 (a) and 26 (b)
Conventional marker piles 1 and 4 as shown in FIG.
The land boundary mark 5 as shown in (c) and FIG. 27 preferably has the following functions. In other words, once installed, it can be installed stably over a long period of time without being easily tilted, pulled out, or rotated, even though the installation site varies from urban areas to mountains and waterfronts. Must be readable accurately. In addition, it is desirable that it is not bulky because it is bulky because a large number of sign piles are bundled as much as possible and weighed while carrying out surveys and installing them in the necessary parts. Furthermore, it is desirable that handling such as construction by driving or embedding and large-scale transportation by people or vehicles is simple. Furthermore, it is desirable that the manufacturing and mass production can be performed by a simple process and the price is low.

(1) Immobility: To prevent the place from moving,
Be sure to bury it firmly so that it cannot be easily moved. (2) Clarity: It should be buried so that anyone can understand it. (3) Permanence: Manufactured from a material that will not be damaged or corroded, and the sign itself will survive for semi-permanent use so that it can be clearly identified. (4) Workability: Lightweight and easy to install, transport, and handle. (5) Versatility: A wide variety of signs can be displayed and used. (6) Flexible modification: As a sign pile, it basically has a simple structure and shape as much as possible, and it is easy to deal with the structure, shape, color, etc. of the sign itself and the sign pile as a whole, and the purpose of use. In addition, being able to respond flexibly, and being able to easily and quickly respond to sudden entry and small-lot production. (7) Variety of display ... Engraving, engraving, and coloring of desired characters and marks can be done inexpensively and easily. (8) Applicability: For concrete roads, asphalt roads,
Being able to support a wide range of applications such as gravel road, embedding, point clarification, and boundary clarification embedding. (9) Freedom of construction method: It can be either driven or embedded. (10) Toughness: It should have sufficient strength to withstand large and complex loads, and should not be deformed by forcible driving, and should not be broken or chipped. (11) Abrasion resistance: The signs themselves that have been engraved or engraved on the sign piles must be wear resistant so that they can be clearly identified semipermanently.

In the marker pile 1 as shown in FIG. 26 (a),
Since the foot 3 is screwed to the sign board 2, the production cost is increased due to the processing cost of the screw. Further, since the mounting portion 2a is formed on the back surface of the sign plate 2 so as to project, it is bulky when it is collectively transported, which hinders handling. FIG. 26
Marker pile 4 and land boundary mark 5 shown in (b) and (c)
Since it is formed as a whole as a whole, when it is made of stone or concrete, it becomes very heavy and difficult to transport and handle. When it is made entirely of plastic, that is, synthetic resin, it is lightweight and easy to handle, but it is poor in durability. Further, since the land boundary mark 5 is also formed by integrally projecting the retaining portion 5c at the tip of the columnar portion 5b, it is bulky and hinders transportation and handling.

That is, conventionally, there is a concrete marker pile such as the land boundary line 5 shown in FIG. 27. This concrete pile has a reinforcing bar 6 and is made of an aggregate such as sand. It is manufactured by fitting a mixture of the above and cement appropriately into a frame. The concrete itself lacks high quality sand such as river sand, making it difficult to obtain at low cost, and often uses sea sand, so the reinforcing bars 6 easily rust due to the adverse effects of chlorine and the like. Has a relatively short life because it easily cracks and weathers. The service life is about 10 years, and is said to be long and at most 20 to 30 years. In addition, concrete has a low toughness, and has the drawback that if the pile is driven poorly, it will crack or chip. Furthermore, water leaks from the cracks or cracks that have occurred or moisture is absorbed by the concrete itself to corrode the rebar 6 inside, and due to the hydration and oxidation of the rebar 6, the strength is suddenly lost and it becomes tattered. Due to such oxidization, the volume of the reinforcing bars 6 expands in the concrete pile, causing the pile itself to collapse and shortening its life, and its durability is easily lost.

[0007] In addition, all of the concrete products are filled or solid, and one of them is 30 to 60 in terms of weight.
Since it is close to kg, it is very heavy and difficult to transport and handle. Also, the shape and structure are not simple. Therefore, it is difficult to transport and handle, especially in mountainous areas. Furthermore, since concrete is fragile, it is particularly difficult to use it for driving.

Also, the sign pile made of synthetic resin, like the concrete pile, is completely filled with the inside. Materials made of synthetic resin include materials such as polyethylene and polyvinyl chloride, and intermolecular bonds are often formed of carbon-carbon single or multiple bonds. A general synthetic resin material which is not a special reinforcing resin is therefore low in strength and weak. In order to reinforce such weak portions, a large amount of fillers, binders, crosslinkers, etc. are mixed to reinforce the joint strength. Therefore, although it is good for a while after driving,
When it changes over time, so-called whitening or white flower phenomenon occurs, in which the filler, binder, or crosslinker is removed or reduced in a short period of time, and strength is lost in a short period of time. , Strength is lost in a short time, relatively short-lived and not durable. Synthetic resin piles are liable to chip when driven in, almost as well as concrete, and have the whitening phenomenon as described above, so the actual life is a few years or less, and the signs themselves are discolored or discolored. It becomes difficult to use it. In particular, if the usage environment is severe, the life will be shortened.

The object of the present invention is to make it possible to flexibly respond to the overall structure, shape, color or a combination of these as a sign pile, enhance the multi-functional aspect of the sign pile, and improve reproducibility and It is an object of the present invention to provide a steel marker pile that can easily and surely meet various requirements including overall efficiency and economic efficiency, and a manufacturing method thereof.

[0010]

DISCLOSURE OF THE INVENTION The present invention is a steel marker pile for driving or embedding, which is a plate or lid made of steel on which a marker is displayed and a hollow steel tube. A plate-like body, the base side of which is joined to the back side of the plate-like body or the end of the lid-like body, and the tip side of which extends in a direction substantially perpendicular to the surface of the plate-like body or the lid-like body or at a specific angle. It is a steel sign pile characterized by including the following. Further, the plate-shaped body or the lid-shaped body of the present invention is characterized in that the surface thereof is exposed on the ground surface, and at least a part of the cylindrical body is buried in the ground. Further, the present invention is characterized in that at least a part of the lid-like body is buried in the ground, and all of the tubular bodies are buried in the ground. Further, the steel of the present invention is characterized in that iron is mainly contained and chromium, or chromium and nickel are contained. Further, the steel of the present invention is characterized by containing copper. Further, the steel of the present invention is characterized in that the surface roughness is in a range of 0.2 or more and 3.5 or less in average value of the maximum height Rmax. Further, the tubular body of the present invention is characterized in that the cross-sectional shape perpendicular to the axis is substantially uniform in the axial direction. Further, the tubular body of the present invention is characterized in that the cross-sectional shape perpendicular to the axis changes in the axial direction. Further, the tubular body of the present invention is characterized in that the cross section perpendicular to the axis is endless in the circumferential direction. Further, the tubular body of the present invention is characterized in that there is a cut in the circumferential direction of the cross section perpendicular to the axis. Further, the present invention is characterized in that a cutting edge is formed on a tip side of the tubular body. Further, the present invention is characterized in that a tapered tip member is integrally formed in the opening portion on the tip side of the tubular body. Further, the present invention is characterized in that a spear-shaped body having a sharp tip can be detachably attached to the opening portion on the distal end side of the cylindrical body. Further, a branch member extending in a direction substantially perpendicular to the axial direction can be detachably attached to the tubular body of the present invention. Further, the present invention is characterized in that fin-shaped ribs extending in a direction substantially perpendicular to the axial direction are fixed to the tubular body. Further, the plate-shaped body of the present invention is characterized by being formed of a steel plate. Further, the lid-like body of the present invention is formed by joining a plate-like body to a short small tubular body, or by pressing a steel plate. It is characterized by being a steel bottomed tubular body. Further, the present invention has the same content as a marker displayed on the outer peripheral surface on the proximal end side of the tubular body or the lateral outer peripheral surface of the lid-shaped body, which is joined to the plate-shaped body or the upper surface of the lid-shaped body. The sign is displayed by designating the position and direction of the sign. Further, the joining of the plate-shaped body or the lid-shaped body of the present invention and the cylindrical body is performed by welding. The present invention is also a steel marker pile for driving or embedding, in which a marker is displayed on the upper surface, and a lid-shaped body mainly made of synthetic resin and formed in a solid columnar shape is a hollow steel cylinder. A steel marker pile characterized by being inserted into one end of a strip. Further, the lid-shaped body of the present invention is characterized in that a plurality of synthetic resins of different colors are formed in combination so that the same mark as the surface appears on a cross section perpendicular to the axial direction. Further, the present invention is a steel marker pile for driving or embedding, which is the same as the marker to be displayed on the upper surface of the plate or lid on one end side of the hollow steel cylindrical body. A solid columnar body formed by combining synthetic resins of a plurality of colors is inserted so that the marker appears in a cross section perpendicular to the axial direction by designating its position and direction, and from the outside of the columnar body, It is a steel sign pile characterized in that a plate-shaped body or a lid-shaped body made of steel with a sign displayed on the upper surface is welded to one end side of a cylindrical body. Further, the present invention forms a plate-shaped body or a lid-shaped body from a steel plate,
A concave portion or a convex portion corresponding to the mark is formed on the upper surface of the plate-like body or the lid-like body, and the back side of the plate-like body or the lid-like shape is formed on the base end side of the hollow tubular body made of steel formed in advance A method for manufacturing a steel marker pile, comprising welding an end portion of a body and coloring a concave portion or a convex portion on an upper surface of a plate-shaped body or a lid-shaped body to display a marker. Further, the present invention is characterized in that the steel hollow cylindrical body is formed by forming a steel plate. Further, the concave portion corresponding to the mark on the upper surface of the plate-shaped body or lid-shaped body of the present invention, press working, etching, electric discharge machining,
It is characterized by being formed by one or a plurality of methods selected from the group consisting of grinding, electric pen processing and laser processing.

[0011]

According to the present invention, the driving or embedding marker pile basically includes a plate-like body or a lid-like body and a tubular body, and is made of steel which is formed by joining the two. Since it is a hollow bottomed cylindrical body, it can be formed in a very simple structure and shape, and can be made lighter. Since it is basically made of steel and is hollow, it has high strength and toughness, and it is possible to secure more wear resistance than the same metal as aluminum and gun metal, while synthetic resin is used as a material for the entire marker pile. It becomes possible to use them together, and it is possible to increase the function as a sign pile and to provide a wide variety of sign piles. In addition, because it is made of steel, it is possible to make full and appropriate use of various advanced processing technologies such as joining technology, which includes advanced steel sheet forming technology, pipe forming technology, welding, etc., and drilling.
In comprehensively satisfying the multi-functions and various requirements according to the above-mentioned purpose of the present invention, without any adverse effect on the sign pile itself, the purpose of use in terms of the overall configuration, structure and shape of the sign pile and It is possible to deal flexibly and easily depending on the location and situation. Since it is hollow, it can be used without any hindrance for embedding, while the tip of the tubular body acts as a cutting edge during implantation for implantation, and the soil enters the inside of the tubular body, so there is little resistance and it is easy to implant. . Especially for embedding, by joining and integrating the base end side of the plate-like body or the lid-like body so that the tip end side of the cylinder extends at a specific angle, Etc. can be dealt with. In any case, it is possible to fulfill all of the above-mentioned multi-functions and various requirements that cannot be achieved with existing concrete and synthetic resin products, can be manufactured with simple processes, and responds to sudden mass production requests. Is easy.

According to the present invention, at least a part of a hollow steel tubular body is embedded in the ground below the plate-shaped body or the lid-shaped body whose surface is exposed on the ground surface. Since the tubular body is hollow, it has a small weight, is easy to carry and handle, and has excellent workability. Since the soil also intrudes into the hollow inside of the tubular body at the time of driving, it can be firmly buried from inside and outside so that the burying place does not move, and it has excellent immobility. The plate-like body or the lid-like body can be sufficiently exposed on the ground surface to facilitate identification even from a distance.

According to the invention, since at least a part of the lid-like body and the entire tubular body are buried in the ground, the joint portion between the lid-like body and the tubular body is also buried in the ground, and the lid is covered. The shape can also be firmly held in the ground. It is also applicable to the case where it is desired to expose only the surface portion where the plate-shaped or lid-shaped marker is displayed from the ground surface or the like.

According to the present invention, steel is mainly iron and contains chromium, or chromium and nickel.
It has excellent toughness such as typical stainless steels such as SUS304, 316, 430, 434, and alloy steels similar to it, and has sufficient durability to withstand long-term use in harsh environments, humid atmospheres, or underground. It is possible to obtain a steel sign pile that is not easily damaged or corroded and has excellent durability. Also, since the sign itself is permanent, it can be buried so that anyone can understand it, and it has excellent clarity. Even when it is buried as a sign pile, it is possible to construct it by using the driving or the embedding properly.

Further, according to the present invention, since the chromium or the steel containing chromium and nickel further contains copper, a slight patina is generated to cause slight toxicity, excellent antibacterial properties, and plants such as molds It rarely happens. Depending on the place of use and conditions, it is difficult for plants to grow around, and algae do not easily attach in water. For this reason, the sign is hard to disappear, and even if a mold or the like is generated, it can be wiped off lightly, providing excellent clarity and durability.

According to the invention, the surface roughness of steel is R
Since the average value of max is in the range of 0.2 or more and 3.5 or less, the surface finishing can be carried out in a practical range to manufacture. It can be used in the atmosphere on the ground and in the ground without any problem in durability. Since the surface roughness is sufficiently small, it has excellent durability, and especially when copper is included, dirt, algae, mold and the like are less likely to adhere to the surface. The design as a sign is also beautiful.

Further, according to the present invention, the cross-sectional shape of the tubular body perpendicular to the axis is substantially uniform in the axial direction regardless of whether the axial direction of the tubular body is substantially vertical or at a specific angle. The body can be easily manufactured, for example, by bending and welding a steel plate or the like, or can be easily manufactured by easily obtaining and using a commercially available steel pipe or steel cylinder. Since this tubular body has a uniform cross-section in the direction perpendicular to the axis, it is excellent in terms of functions such as the above-mentioned workability, flexible modification, applicability, and process flexibility.

Further, according to the present invention, since the cross-sectional shape of the tubular body at right angles to the axis changes in the axial direction, for example, the tip is tapered to facilitate driving into the ground or conversely to enlarge the tip. As a result, immobility and applicability can be ensured by providing the effect of retaining or rotating from the ground for embedding.

According to the present invention, since the cross section perpendicular to the axis of the tubular body is endless in the circumferential direction, the tubular body is manufactured as a round, triangular, square or polygonal pipe or tube, and has a length required in the longitudinal direction. It is possible to obtain a steel marker pile having excellent toughness, workability, immobility, applicability, and flexibility in construction method by cutting into pieces. In particular, since the incision into the ground at the time of driving is endless, deformation and bending are unlikely to occur, and the operation is stable.

Further, according to the present invention, since there is a break either in the state of abutting or in the condition of having a clear break in the circumferential direction of the cross section perpendicular to the axis of the tubular body, the steel sheet is bent and formed. In addition, the cylindrical bodies can be easily engaged with each other and can be bundled together without being bulky to be transported and handled in a large amount during transportation. Even if there is a break in the tubular body, it has not only workability but also immobility, flexible modification, applicability, and flexibility in construction method.

Further, according to the present invention, since the cutting edge is formed on the tip side of the tubular body, it can be easily driven into the ground or the like. The blade edge can be easily formed by grinding it from the outside with a rotary grindstone or by thinning the plate thickness by press working or the like when manufacturing the tubular body. Therefore, it is particularly excellent in the flexibility of construction method, applicability, flexible modification, and versatility.

Further, according to the present invention, since the tapered tip member made of synthetic resin or metal is integrally formed on the tip side of the tubular body, as in the case of the existing tapered marker pile, It becomes easy to drive inside. Particularly when the ground contains large gravel or the like, the tapered tip member can push away the gravel or the like and easily drive the gravel to an accurate position. Further, since the tip member is integrally molded, it is effective as a retainer after the driving. In particular, it has excellent workability, applicability, flexibility in construction method, and flexibility.

According to the invention, the tip side of the tubular body is
It may be left open, or the spear-shaped body may be detachably fitted into it. It can be used flexibly according to the conditions such as soil. If a spear-shaped body is attached, centering and guidance can be facilitated only at the time of driving, and it may be removed after driving and unnecessary.

Further, according to the present invention, since the branch member extending in the direction substantially perpendicular to the axial direction can be detachably mounted on the tubular body, it can be freely used for both driving and embedding. It is possible. If such a branch member is attached, it is possible to perform removal and rotation prevention after implantation for implantation. The branch member can be attached, for example, immediately before construction depending on the situation of the site such as soil. Therefore, since it can be transported without attaching the branch member to the tubular body, it can be efficiently handled without being bulky, and is excellent in workability, flexible modification, applicability, and flexibility in construction method.

Further, according to the invention, since the fin-shaped ribs extending in the direction substantially perpendicular to the axial direction are fixed to the cylindrical body, it is difficult to remove and rotate after being buried, and immobility is improved. .

Further, according to the present invention, since the plate-shaped body is formed of a steel plate, it is hard to wear after a recess or the like corresponding to the displayed content of the sign is once formed, and the plate-shaped body is not worn for a long time. A stable display can be performed over. Persistence,
It has excellent flexibility, versatility of display, and abrasion resistance.

Further, according to the present invention, the lid-like body is formed by joining a plate-like body to a short and small tubular body or is formed by pressing a steel plate to form a bottomed cylinder made of steel. Because it is a state,
Mass production is relatively easy and inexpensive. Also, the joint with the base end side of the tubular body can be buried in the ground, for example,
Further, welding to the base end side of the tubular body is also facilitated, the reliability of the welded portion is improved, and it is possible to stably function for long-term use as a marker pile. Therefore, it has excellent clarity, flexibility, versatility, display variety, applicability, and toughness.

According to the invention, a marker displayed on the outer peripheral surface of the tubular body on the base end side or the lateral outer peripheral surface of the lid-like body on the upper surface of the plate-like body or lid-like body to be joined. Since the sign with the same content as is displayed by specifying the position and direction of the sign, even if the plate or lid drops off after installation, the displayed content can be easily and reliably confirmed. . Therefore, it is particularly durable.

Further, according to the present invention, the plate-like body or the lid-like body is joined to the tubular body by welding. Therefore, it is possible to stably maintain the joined state for a long period of time by the excellent welding technique of today. it can. Even if it is used for driving,
There is no lack of strength and toughness, and it is possible to secure immobility as a sign, permanence, workability, flexible modification, display versatility, application flexibility, construction method flexibility, and toughness.

Further, according to the present invention, the lid-like body is mainly made of synthetic resin and is formed into a solid columnar shape, and is fitted on the base end side of the hollow cylindrical body. Since it has a hollow cylindrical body, a lid-shaped body made of synthetic resin and formed into a solid columnar shape can be inserted and used together like a plug. Moreover, even if the lid-shaped body is made of synthetic resin and lacks in toughness, the solid cylindrical-shaped tubular body that is inserted and integrated is made of steel. It can reinforce the body and secure toughness as a marker pile. In addition, since this lid-like body is mainly made of synthetic resin, it is easy to display the markings and it is highly versatile. You can easily provide things.

Further, according to the present invention, the lid-shaped body is formed by combining synthetic resins of different colors so that the same mark as the surface appears on the cross section perpendicular to the axial direction. Since the lid-shaped body is formed by such a multicolor molding, even if the surface of the lid-shaped body is worn, if the worn surface is lightly polished, a new marker is always produced like a so-called "Kintaro candy". It appears accurately on the surface and can reliably function as a label for a long period of time. Therefore, it is particularly excellent in durability, display variety, versatility, flexibility, and applicability.

Further, according to the present invention, in the inside of the steel plate-like body or lid-like body welded to the base end side of the cylindrical body, the same mark as the mark displayed on the upper surface thereof is provided. Since a solid columnar body made by combining multiple colors of synthetic resin is inserted so that it appears in a cross section perpendicular to the axial direction by specifying the position and orientation, it can be placed on a plate or lid. Even if the sign displayed on the surface is worn or worn for other reasons and cannot be identified, or if the plate-like or lid-like body falls off, the column like The function as a sign pile can be effectively and surely achieved by displaying the surface of the sign on the outside and confirming it. Therefore, it has excellent durability, flexibility, and applicability.

Further, according to the present invention, a plate-shaped body or a lid-shaped body is formed from a steel sheet by a forming method such as punching or deep drawing, and various kinds of etching or engraving are formed on the upper surface of the plate-shaped body or the lid-shaped body. A concave portion or a convex portion corresponding to the marker is formed by the method of 1), and is welded to the base end side of a preliminarily formed steel hollow cylindrical body. Since the concave portion or the convex portion corresponding to the mark is formed before welding, the handling at the time of the forming process is easy. Since the recesses or protrusions are colored by painting after welding, the colored parts are not damaged by the heat during welding, and the recesses can be colored or baked to be used as long-term markers. Stable coloring can be performed.

Further, according to the present invention, since the hollow tubular body made of steel is formed by forming a steel sheet, the mass production is easy and the processing cost can be reduced.

Further, according to the present invention, the concave portion or the convex portion corresponding to the mark on the upper surface can be formed by various methods such as pressing, etching, grinding, electric pen processing, and laser processing.

As described above, the marker pile made of stainless steel or a steel similar thereto has high strength and toughness, and is very strong against impact. Even if the cross-sectional shape is circular or quadrangular, no matter what you do with a wooden punch, it will be extremely strong, will not bend, and will not be damaged. It is also lightweight,
It is easy to carry, has a simple shape and structure, and has no protrusions, which makes it easy to carry out construction, transportation, and various handling. It is easy, and the tip member can be molded as if it is an integral one, or it can be detachably mounted and used when necessary, or can be detached and the tubular body can be driven into soil or the like. Therefore, it can sufficiently withstand strong driving with a large force, does not progress corrosion, has a shape and strength remaining for a long time and has a life of about 50 years or more, and has sufficient durability as a sign pile. Therefore, the sign pile made of stainless steel or a steel similar thereto is functionally as multifunctional as or made of concrete or synthetic resin, and is expected to have a life of 20 to 30 years longer than that of concrete.

[0037]

1 to 4 show the appearance structure of a sign pile according to an embodiment of the present invention, FIG. 5 shows an example of a manufacturing process of the sign pile of FIGS. 1 to 4, and FIG. Show the method of burying the sign pile,
FIG. 7 shows another method of burying the marker pile of FIG. 1, and FIG.
Fig. 9 to Fig. 11 show the results of a test of corrosion as a roofing material in the atmosphere, and Fig. 12 shows the surface roughness of the underground buried object such as a marker pile. 13 and 14 show a shape of a cylindrical body according to another embodiment of the present invention, FIG. 15 shows a shape of a sign board, and FIGS. 16 and 17 show still another embodiment of the present invention. 18 shows the cross-sectional shape of the tubular body in FIG. 18, FIG. 18 shows the advantage of the cross-sectional shape as in FIG. 17, and FIGS. 19 and 20 show the shape of the tubular body according to another embodiment, and FIG.
Shows a configuration of another embodiment regarding joining of a plate-shaped body or a lid-shaped body and a tubular body, and FIGS. 22 to 25 show a configuration using a stopper made of synthetic resin.

As shown in FIGS. 1 (a), 1 (b), 1 (c) and 1 (d), a marker pile 11 according to one embodiment of the present invention has a plate-shaped body 12a whose upper surface functions as a marker plate, Lid 12
b, the plate-shaped body 12c or the lid-shaped body 12d, and the legs 13a, 13b, 13c, 13d, which are cylindrical bodies, are basically included. The sign plate 12 and the foot 13 that collectively refer to these are made of, for example, stainless steel, and the rear surface of the sign plate 12 and the foot 13
The upper end of is welded at the welded portion 14. Sign board 12
The upper surface of is exposed to the surface of the earth and displays a sign. Corresponding to the sign, the surface of the sign plate 12 has recesses 15a, 15
b, 15c, and 15d are formed, and the bottom surface thereof is colored by baking a durable pigment. The direction in which the foot 13 extends with respect to the sign plate 12 may be formed at a specific angle,
Hereinafter, as a typical example, a normal almost vertical case will be shown. Lid 12b as lid 12 and lid 12
Reference character d denotes a bottomed tubular body having a marker portion 40 and a short tubular portion 41.

In the case of FIG. 1, the foot 13 has a hollow square tubular shape (cylindrical shape) or a circular tubular shape (cylindrical shape), and the upper end where the welded portion 14 is formed is the base end side, and the foot 13 is on the surface of the sign plate 12. It extends almost vertically downwards. An opening 16 is provided on the tip side of the foot 13.
Are formed. The foot 13 is further provided with openings 46 for inserting the anchors 17a and 17b, which are branch members extending in the horizontal direction, respectively, and the nut 18
It can also be fixed by a and 18b. The two anchors 17a and 17b are arranged vertically and are orthogonal to each other. If they interfere with the driving of the marker pile 11, they can be removed and driven, and especially when embedded and used for embedding, the retainer or Performs a detent effect.

As another embodiment, FIG. 2 shows a case where the marker plate 12 as a plate or the marker 40 of a lid has a larger cross-sectional area than the foot 13 as a cylinder, and FIG. Indicates that the lid-like body may be formed by joining plate-like bodies as the marking portions 40a and 40b and tubular bodies as the short small tubular portions 41a and 41b. In FIG. 12 has a step on the back side of the plate-shaped body, (b) shows a rounded surface on the plate-shaped body as the marker plate 12, and (c) shows a case with a plurality of legs 13. .

FIG. 5 shows a marker pile 11 as described above.
An example of the manufacturing process for manufacturing the
First, the foot 13 and the foot 13 are manufactured separately, and finally, they are integrally joined by, for example, welding. Sign board 12
Is punched or cut into a predetermined shape and dimension from the state of the steel plate in step a1, and a predetermined recess 15 is formed in a predetermined position and direction in step a3. Although the recess 15 is formed by various methods such as chemical etching by etching using a mask,
Here, it is formed by stamping with a die. It can also be formed by electrolytic processing, electric discharge processing, or cutting processing. It is also possible to form the recess to some extent by digging down by an electric pen process or the like. On the other hand, the foot 13 is continuously bent into a tubular shape or a tubular shape in step b2 from the state of the steel strip in step b1, or is roll-formed, the seam is welded in step b3, and the predetermined length is set in step b4. Be cut off.

In step c1, the sign plate 12 and the foot 13 are assembled and welded. For the welding, for example, MIG welding or laser beam welding is preferably used. In the next step c2, polishing is performed to adjust the appearance of the welded portion. In step c3, the inside of the recess 15 on the surface of the sign plate 12 is colored. As the coloring, for example, a method of applying a paint containing a durable pigment and baking it, melting a glassy coloring agent, or embedding a colored synthetic resin is possible. In this way, in step c4, the steel marker pile 11 according to this embodiment is manufactured. In particular, in the production of a small lot, the recess 15 may not be formed in step a3, and the marker may be formed by the electric pen processing or the like after the welding in step c1.

As shown in FIG. 6, the marker pile 11 of this embodiment.
Is inserted into a pre-drilled hole 20 in the ground 19,
Remaining soil, concrete, etc. are poured into the prepared hole 20 and buried therein. In the present embodiment, the portion of the marker plate 12 slightly projects from the surface of the earth, but it may be submerged until it reaches the surface.

As shown in FIG. 7, the marker pile 11 of this embodiment.
Is the cutting edge 2 because the tip of the foot 13 is cut, for example.
1 is formed and becomes the marker pile 11a. Such a marker pile 11a can be stabbed in the ground 19 by hitting with a wood hammer for driving as shown in FIG. 7 (a).
As shown in FIG. 7B, the anchors 17a and 17b may be driven up to the bottom surface of the prepared hole 22 and the upper portion thereof may be embedded. Since the foot 13 is manufactured by bending a stainless steel strip, for example, the steel strip has a plate thickness of about 1 to 2 mm and is relatively thin, and even if the special cutting edge 21 is not formed, it may be ordinary ground. For example, as shown in FIG.
Implantation exactly the same as in the case of (b) can also be performed.
Since the foot 13 is hollow, it is possible to allow the soil to invade the inside thereof, and after the burial, the marker piles 11 and 11a are firmly held by the soil from the inside and outside to easily tilt or pull out,
It can be prevented from rotating.

As shown in FIG. 8, the marker pile 11 of this embodiment.
Consists of a part buried in the ground 19 and a part protruding above the ground surface and exposed to the atmosphere. Corrosion resistance of stainless steel to soil is of little concern in normal homogeneous soil environments. However, in stainless steel pipes buried in soils with large soil differences or soils with high wetness such as underground spring water, macrocells are formed between different soils or between the top and bottom of soils, and corrosive factors in soil are Local corrosion may be caused by (chlorine ions, etc.).

Therefore, in the case where the marker pile 11 is used by vertically burying it, depending on the soil condition, stainless steel may form a wetting difference macrocell between the upper and lower portions of the pile due to a ventilation difference. FIG. 8 shows a conceptual diagram of the wet differential macrocell corrosion behavior in a vertically embedded stainless steel pipe. The dry portion above the ground 19 serves as a cathode, the submerged portion below the ground 19 serves as an anode, and the anode side corrodes.

Table 1 shows 1 of the vertically buried stainless steel pipe.
The field test results for 0 years are shown. In areas B, D, E, F and H where the wettability is low below the ground 19, no corrosion was observed, but in areas A, C and G with spring water, the length was 1.3 m. A brown color was observed in the lower part of the vertical pipe of No. 3, and in particular, corrosion was observed in SUS304 in the G area. Chloride ion concentration in the G area is 463 mg / kg, which is the highest compared to other areas. However, in the case of stainless steel, even if corrosion occurs, it is localized corrosion such as slight pitting and crevice corrosion. Therefore, for example, the shape as a pipe or a cylinder is not lost at all and is sound. In the results shown in Table 1, the corrosion that occurred in the G area was also a shallow erosion, and only two pits having a diameter of several mm occurred. Moreover, the pitting corrosion remains on the surface of the stainless steel plate, and does not proceed deeply until it penetrates the plate thickness.

[0048]

[Table 1]

If the foot 13 is made of stainless steel such as SUS304 in Table 1 (a) or SUS316 in (b), similar corrosion resistance should be obtained. Similar results are obtained for crevice corrosion. That is, these results show that the soil corrosiveness of the stainless steel pile has no problem, and demonstrate that the marker pile 11 has semipermanent functionality. In addition, stainless steel piles can be used in the same way whether hot rolled material or cold rolled material is used, and especially when hot rolled material is used, material cost can be further reduced. Is.

FIG. 9 and FIG. 10 show the results of the atmospheric exposure test for 10 years in the Okinawa area, which is a standard for judging the durability of the portion exposed to the atmosphere in FIG. Sample is SUS3
16, SUS304, SUS434, SUS430 (J
It is a standard steel grade such as IS G 4303) and is supposed to be used as a ridge material. FIG. 9 shows the number of grids in which red rust was generated when the vicinity of the center of the sample piece was divided into 100 grids, and the R. N. (Rading number) is shown. That is, the appearance is evaluated.

FIG. 10 shows the weather resistance after rust removal. When investigating the corrosion resistance (weather resistance) of each standard steel material in the atmosphere, the experimental results in the Okinawa area have become the most important recently. This is because the Okinawa area is the most corrosive environment in Japan. Since it is a hot and humid subtropical area and is an island, it is in an environment susceptible to the influence of sea salt particles (chlorine ions) due to wind from the sea.

Table 2 shows the maximum pit depth of various stainless steels in the atmospheric exposure test for 10 years in the coastal area, and shows that the Okinawa area is in the strongest corrosion state. It can be used anywhere in the world for stainless steel as long as it can be used in Okinawa where subtropical, hot and humid, high humidity islands contain chloride ions in the sea breeze and chloride ions in groundwater and ground water. Guaranteed to be possible.

[0053]

[Table 2]

FIG. 11 shows the maximum pit depth after 40 years of stainless steel estimated by statistical analysis from the results of atmospheric exposure tests for 10 years in the Okinawa area. Even in the Okinawa area, which has the most severe corrosive environment in Japan, in the case of stainless steel, the estimated maximum pit depth after 40 years is very locally SU.
0.2 mm or less for S304, 0.5 m for SUS430
m or less. From this, it is judged that if stainless steel is used as the material, the corrosion resistance in the atmosphere as the sign pile is sufficient. It is confirmed that the marker pile 11 has complete functionality even for an estimated 50 years or more than 100 years.

As shown in FIG. 12, the marker plate 12 and the feet 13
Various concepts of surface roughness are defined in relation to the surface state of No. 3, and Table 3 shows data on the stainless steel sheets used in this example. The average surface roughness Rmax is preferably in the range of 0.2 or more and 3.5 or less. From the standpoint of soil and other dirt adhering to the surface of the marker pile, and the generation of plants and molds, it is better to have a finer surface roughness, but in practice, use within this range without any problems. You can

The finish is indicated by a symbol for surface finish specified in JIS G 4305. The bright heat treatment (BA) finish has an average value of Rmax of about 0.21 and the 100 to 120th polishing (No. 3) finish. The average value of Rmax is 3.4
It is about 7.

[0057]

[Table 3]

As shown in FIGS. 13 and 14, as another embodiment of the present invention, feet 23a, 23b, 24a, 24 are provided.
The cross-sectional shape perpendicular to the axis of the axis b may be changed. In FIG. 13A, the cross-sectional shape perpendicular to the axis is uniform up to the middle of the foot 23a, and changes in a taper shape near the tip. In FIG. 13B, the cross-sectional shape of the foot 23b perpendicular to the axis changes smoothly in a tapered shape. In FIGS. 14A and 14B, the foot 24
Anchors 25a and 25b for preventing slip and rotation are formed at the tips of a and 24b.

As shown in FIG. 15, as another embodiment of the present invention, a case where the shape of the marker plate is changed is shown.
In FIG. 15A, an arrow pointing in a diagonal direction is displayed as a marker 27a on the rectangular marker plate 26a. In FIG. 15B, an arrow perpendicular to one side of the triangular marker plate 26b is displayed as a marker 27b. In FIG. 15C, a circular marker plate 26c
On the other hand, a sign 27c with a "+" mark is provided in the center thereof.

As shown in FIG. 16 and FIG. 17, as still another embodiment of the present invention, the cross-sectional shape of the foot is endless as shown in FIG.
You may have a break on the way like. As shown in FIGS. 16 (a) and 16 (b), the end portion 33 may be joined as described above to form a tube or a cylinder for reinforcement, or may simply be contacted endlessly. 17 (a), (b),
Feet 28a, 28b, 28 as shown in (c) and (d)
When c and 28d are used, the manufacturing cost can be reduced because the step of seam welding as a pipe or a cylinder as in step b3 shown in FIG. 5 is unnecessary. In addition, as shown in FIG. 18, when handling a plurality of marker piles, if the directions of the tips are alternately changed, the adjacent legs 28c and the like can be intertwined with each other to reduce the overall bulkiness and to carry and handle in large quantities. it can.

As shown in FIG. 19, tip members 29 and 30 can be attached to the tip of the foot 13 when used for driving. FIG. 19A shows a configuration in which a spear-shaped or conical tip member 29 made of metal or plastic is attached to the tip of the foot 13 having the same sectional shape as the sign plate 12 at the right angle to the axis. FIG. 19 (b) shows a configuration in which a conical tip member 30 made of plastic and having a large cross-sectional area is attached to the tip of a tubular foot 13 having a cross-sectional shape perpendicular to the axis of the marker plate 12. When the tip members 29 and 30 are driven,
Long-term durability is not required as it only has to fulfill its function once. As shown in FIG. 19B, when the cross-sectional area of the foot 13 perpendicular to the axis is small, a plurality of feet 13 can be welded to the back surface of the sign plate 13. In that case, each foot 13
They may be parallel to each other, but may be spaced from each other toward the tip. Tip member 2
If 9 and 30 are detachably attachable, it is possible to freely fit them in according to the condition of the soil or use them as they are in the open state. Further, the tip members 29, 3
If 0 is attached integrally, it can also function as a retainer after embedding.

As shown in FIGS. 20 (a) and 20 (b),
A fin-shaped rib 31 is formed at the tip of the foot 13 to prevent displacement when driving into the ground, prevent slipping out and rotation after burial, and further ensure stability. You can The rib 31 preferably has a divergent shape that extends toward the tip of the foot 13 in a direction perpendicular to the axial direction.

As shown in FIG. 21 (a), the foot 1 near the welded portion 14 between the marker plate 12 and the foot 13 as in the embodiment of FIG.
If the auxiliary sign 32 is provided by designating the position and direction on the upper part of the outer peripheral part of 3, even if the sign plate 12 comes off from the welded part 14, the display content can be confirmed later. it can. Instead of the auxiliary sign 32, the joint of the foot 13 when manufactured as a tube may be aligned with the display direction of the sign plate 12. Further, as shown in FIG. 21B, the auxiliary marker 32 may be provided on the short small tube portion 41 of the lid-shaped body so that the recess 15 of the marker portion 40 is aligned with the position and direction. It is easy to confirm the sign from the side.

In FIG. 22, as a further embodiment of the present invention, as shown in FIG. 22 (a), the base end side of the foot 13 is
A lid-like body made of synthetic resin and formed into a solid columnar shape, in other words, a configuration in which a synthetic resin plug 50 is inserted and sealed is shown.
The stopper 50 is formed by two-color molding of a marker resin 51 and a main body resin 52, and has the same sectional shape as the marker at a cross section perpendicular to the axial direction. If such a stopper 50 is used, even if the surface is worn or missing, if the surface is polished a little, a new surface appears in the "Kintaro candy" formula and the displayed contents of the marker are not damaged. , Persistent display is possible. As shown in FIG. 22B, in the embodiment shown in FIG.
A columnar plug 5 is provided on the base end side of the foot 13 that joins the foot 2 and the foot 13.
It is also possible to insert 3 in advance. This stopper 53 is also shown in FIG.
Similar to the plug 50 of (a), it is formed by a multicolor molding method such as two-color molding, and the color of the resin is changed between the marking resin 54 and the main body resin 55, and the marking is clearly left and displayed. So that

As shown in FIG. 23, the stopper 50 is displayed as shown in FIG. 23 (a) by combining the mark on the upper surface and the auxiliary mark 32, and the upper surface of the stopper 50 and the base end side of the foot 13 are shown. The end surface of the may be flush with the end surface.

In FIG. 24, a stopper 50 mainly made of synthetic resin is used.
And a steel foot 13 are shown in combination. In FIG. 24A, the stoppers 50 a and 53 are used in a state of protruding from the base end side of the foot 13. In FIG. 24B, similarly to FIG. 22B, the stoppers 50b and 53 are held inside the sign plate 12.
In FIG. 24C, the plugs 50c and 53 are inserted into the proximal end side of the foot 13 and can be fixed to the upper surface of the plug 50c with the Y stud 56. A sign board 12 is provided on which a sign is displayed. Y stud 56 and steel marking plate 12
Joining with is performed by welding or the like. Y into the stopper 50c
The stud 56 is embedded when the plug 50c is molded.

In FIG. 25, an adhesive 57 is applied to the joint between the plug 50 and the foot 13, and the plug 50 is hit from above with a wood hammer 58 and driven into the hollow cylindrical body of the foot 13. Indicates the status. The strength at the time of driving is secured by the adhesive 57, and in particular, in FIG. 25 (b), since the plug 50 is completely inserted into the hollow cylindrical body as the foot 13 to be reinforced,
Hard to be destroyed.

Table 4 below shows the characteristics of the above-described stainless steel sign piles in comparison with those of other typical materials. Overall, it can be seen that stainless steel is a superior material. Further, steel is provided with copper, for example, 0.5-2.
If it is contained in an amount of about 5%, the patina formed on the surface shows a slight toxicity to plants, and plant stains such as molds adhere to the pile body and its surroundings, and growth does not occur. Since it has such an antibacterial property, the label is not hidden, the clear display can be maintained for a long period of time, and the function as the label can be exerted.

[0069]

[Table 4]

[0070]

As described above, according to the present invention, the driving or embedding marker pile basically includes a plate-shaped body or a lid-shaped body and a cylindrical body, which are joined together. Since it is a hollow tubular body with a bottom and made of steel, it can be formed in a very simple structure and shape and can be made lighter. Basically made of steel and hollow,
It has high strength and toughness, and even if it is the same metal, it can secure more abrasion resistance compared to aluminum and gun metal, and on the other hand, it is possible to use synthetic resin together as a material that constitutes the entire sign pile, The function can be increased and a wide variety of sign piles can be provided. In addition, because it is made of steel, it is possible to make full and appropriate use of various advanced processing technologies such as joining technology, which includes advanced steel sheet forming technology, pipe forming technology, welding, etc., and drilling. In comprehensively satisfying the multi-functions and various requirements in accordance with the purpose of the present invention, without any adverse effect on the sign pile itself, the purpose and place or its use in terms of the overall configuration, structure and shape of the sign pile. It is possible to deal flexibly and easily depending on the situation. Since it is hollow, it can be used without any hindrance for embedding, while the tip of the tubular body acts as a cutting edge during implantation for implantation, and the soil enters the inside of the tubular body, so there is little resistance and it is easy to implant. . Especially for embedding,
By joining and integrating the proximal end side of the tubular body with the plate-like body or the lid-like body so that the distal end side thereof extends at a specific angle, it is possible to deal with the intended purpose or the specific application. In any case, it is possible to fulfill all of the multi-functions and various requirements that cannot be achieved with existing concrete or synthetic resin products, and it is possible to manufacture in a simple process,
It is easy to respond to sudden mass production requests. In particular, it has excellent durability, is lightweight, is easy to handle, has excellent workability, and can be manufactured at a relatively low cost.

Further, according to the present invention, since the tubular body is hollow, it is lightweight and easy to carry and handle. Immobility can be enhanced by infiltrating soil into the hollow part of the tubular body, at least a part of which is buried in the ground. The plate or lid can be sufficiently exposed on the ground surface.

Further, according to the present invention, only the surface portion of the plate-shaped body or lid-shaped body on which the marker is displayed is exposed from the ground surface or the like, and the joint portion with the cylindrical body is buried in the ground. Can be held firmly.

Further, according to the present invention, since steel containing mainly iron and chromium or containing chromium and nickel is used, stainless steel or an alloy steel similar thereto is obtained, which is excellent in a harsh environment or in a humid atmosphere or in the ground. It can exhibit excellent durability. As a result, it can be used stably for a long period of time and there is no concern about corrosion, so it has excellent durability and clarity, and the thickness of the tubular body is made thin to reduce weight and cost. You can also

Further, according to the present invention, since steel contains copper, mild patina is generated to show mild toxicity to plants, and it is excellent in antibacterial properties and has fungi and algae in water which impairs the content displayed on the sign. It is possible to prevent the adhesion of the like. Even if mold or algae adheres, it can be easily wiped off and removed.

Further, according to the present invention, since the surface roughness of the steel can be finished smooth within a range where it can be practically easily obtained, dirt and mold are unlikely to adhere even during long-term use,
Stable display can be continued. Signs can also be displayed beautifully.

Further, according to the present invention, since the tubular body has a cross-sectional shape perpendicular to the axis substantially uniform in the axial direction, it is easy to use a commercially available steel pipe or steel tube or to manufacture it by bending or welding. It is also excellent in terms of function as a sign pile, such as workability when buried in the ground, flexible modification, applicability, and flexibility of construction method.

Further, according to the present invention, since the cross-sectional shape of the cylindrical body at right angles to the axis changes in the axial direction, for example, it can be made into a tapered shape to facilitate implantation into the ground, or conversely, the tip can be enlarged to be embedded. It is possible to easily add the function of retaining and rotating when installing by the method.

Further, according to the present invention, since the cross section perpendicular to the axis of the cylindrical body is endless, it can be easily manufactured as a pipe or a cylinder, and the rigidity is sufficiently secured to enhance the mechanical strength. You can

Further, according to the present invention, since the cross section perpendicular to the axis of the tubular body is in the state of merely abutting in the circumferential direction or the state where there is a clear cut, when the steel sheet is bent to form the tubular body. Since it can be formed only by bending and there is no need to make it endless by welding, the processing cost can be reduced at low cost. In addition, by utilizing the cuts, the tubular bodies can be entangled with each other to reduce the occupied space when transporting a large number of pipes, thereby facilitating the handling. Even if there is a break in the circumferential direction of the cylindrical body, since it is made of steel, it has not only workability, but also immobility, flexibility, applicability, and flexibility in construction method.

Further, according to the present invention, since the cutting edge is formed on the tip side of the cylindrical body, the resistance of the soil when driving into the ground can be reduced and the driving can be facilitated. Since the tubular body is made of steel, the cutting edge can be easily formed by grinding or pressing.

Further, according to the present invention, since the tapered tip member is integrally formed on the tip side of the tubular body, when driving into soil with a lot of gravel, the gravel is pushed away without displacement. It can be typed in easily. The tip member serves as a retainer after driving.

Further, according to the present invention, a spear-shaped body made of synthetic resin or metal can be detachably attached to the tip. The spear may be attached to the tubular body just before use and used to drive it into the correct position. Alternatively, when the spear-shaped body is not needed, the tubular body may be driven into the soil with the tip open, and at that time the soil will enter the tubular body,
There is also an effect that the resistance to driving is extremely small.

Further, according to the present invention, since a branch member extending in a direction substantially perpendicular to the axial direction can be attached to the tubular body, it is possible to easily perform rotation stop and pull-out prevention after embedding for embedding. You can The branch member can be mounted immediately before construction depending on the situation of the site such as soil, and the marker pile can be transported without mounting the branch member.

Further, according to the present invention, the fin-like ribs prevent the slip-off and the rotation to improve the immobility.

Further, according to the present invention, since the plate-like body or the lid-like body is formed of a steel plate, it is possible to easily form a recess or the like corresponding to the mark on the surface by various processing methods. In particular, forming the recess corresponding to the mark by a stamping method has good productivity. The recess may be formed on the surface of the plate-like body or the lid-like body by etching, electric discharge machining, laser beam machining or the like, in addition to the above-mentioned press machining. Once formed, the recess or the like is less likely to wear and can provide a durable display.

Further, according to the present invention, since the lid-shaped body is a bottomed tubular body made of steel, it can be manufactured relatively easily and inexpensively by deep drawing or welding.

Further, according to the present invention, since the marker having the same content as the marker on the surface is displayed on the outer peripheral surface of the tubular body on the proximal end side or the lateral outer peripheral surface of the lid, Even if you have left, you can easily check the displayed contents.

Further, according to the present invention, the joining between the plate-shaped body or the lid-shaped body and the base end portion of the cylindrical body is performed by welding. Today's excellent welding technology also improves reliability,
The risk of the lid-like body coming off the weld is almost eliminated.

Furthermore, according to the present invention, a solid synthetic resin lid-like body can be inserted into a hollow steel tubular body to achieve various displays and toughness at the same time.

Further, according to the present invention, a synthetic resin is used as the lid-like body, and a plurality of types of synthetic resins have the same sectional shape perpendicular to the axis so that the markers to be displayed are the same in the section perpendicular to the axial direction. Since they are combined and molded in this way, the same sign can be clearly displayed on the part that becomes a new surface after light polishing even if the surface is slightly damaged by abrasion, as in the case of so-called "Kintaro candy". .

Further, according to the present invention, inside the connecting portion between the plate-shaped body or lid-shaped body made of steel plate and the base end side of the cylindrical body, the cross-sectional shape made of synthetic resin is the same as that of the marker in the axial direction. Since the pillars molded by combining resins of multiple colors to fit the shape are inserted, the signs of the plate or lid are worn, or the steel plate or lid is made of steel. Even if it should come off, the display contents can be confirmed by the column made of synthetic resin.

Furthermore, according to the present invention, the plate-like body or the lid-like body is welded to the plate-like body or the tubular body after forming the recesses or protrusions corresponding to the markers on the surface of the plate-like body or the lid-like body. It is possible to easily form a recess or the like in the lid-shaped body. Further, since the concave portion is colored after welding, the colored portion is not damaged by heat during welding, and a durable display can be easily performed.

Further, according to the present invention, since the hollow tubular body made of steel is formed by bending the steel plate, it is excellent in mass productivity and the manufacturing cost can be reduced. Further, it can be easily formed into an endless shape by bending, or can be formed into a shape having a notch in the circumferential direction of the cross section. If it is made endless and the ends are welded together, a tube is formed and sufficient strength is obtained.

Further, according to the present invention, it is possible to flexibly form a concave portion or a convex portion corresponding to the mark on the upper surface of the plate-like body or the lid-like body by various methods such as etching.

That is, the steel marker pile according to the present invention has a large strength by using stainless steel or the like,
It has toughness and is very strong even when hit. In addition, even if the pipe is made square, no matter what you hit with a wooden punch, it will be very strong, will not bend, and will not be lost. In addition, it is lightweight, easy to carry, and has a simple shape and structure.If the branch member is removed, it does not have a bulge. The spear-shaped body may be detachably attached and used when necessary, or may be detached and the tubular body may be directly driven into the soil or the like. Therefore, it is possible to sufficiently cope with strong driving with a large force, has a long life, and is durable. Therefore, the signpost made of stainless steel or similar steel can functionally replace concrete or synthetic resin.

Further, the marker pile having excellent durability is realized in the atmosphere, the ground, the seawater, etc., and can be used for a long period of, for example, about 50 years or more. Even if a large driving force is applied, the pile is not damaged and can be driven into hard soil.
Further, since it is hollow, the weight can be reduced, and therefore it is easy to carry and handle, which is particularly advantageous for use in mountains and the like.

[Brief description of drawings]

FIG. 1 is a perspective view of an embodiment of the present invention.

FIG. 2 is a perspective view of another embodiment of the present invention.

FIG. 3 is a perspective view of another embodiment of the present invention.

FIG. 4 is a front view of another embodiment of the present invention.

5 is a manufacturing process diagram of a steel marker pile according to the embodiment of FIG. 1. FIG.

6 is a cross-sectional view showing a buried state of the embodiment of FIG.

FIG. 7 is a cross-sectional view showing another embedded state of the embodiment of FIG.

8 is a conceptual diagram of corrosion by a wet differential macrocell in the ground of the embodiment of FIG.

FIG. 9 is a graph showing a corrosion state of a stainless steel water pipe due to wet differential macrocell corrosion in the ground.

FIG. 10 is a graph showing the appearance of red rust on the appearance of a stainless steel roof plate in the atmosphere.

FIG. 11 is a graph showing a corrosion state of a stainless steel roof plate in the atmosphere.

FIG. 12 is a schematic diagram showing the definition of surface roughness of stainless steel.

FIG. 13 is a simplified perspective view of another embodiment of the present invention.

FIG. 14 is a simplified perspective view of another embodiment of the present invention.

FIG. 15 is a simplified plan view of still another embodiment of the present invention.

FIG. 16 is a simplified axial cross-sectional view of a foot of yet another embodiment of the present invention.

FIG. 17 is a simplified axial cross-sectional view of a foot of yet another embodiment of the present invention.

FIG. 18 is a simplified cross-sectional view perpendicular to the axis showing the advantages of the embodiment of FIG.

FIG. 19 is a simplified front view of yet another embodiment of the present invention.

FIG. 20 is a perspective view of still another embodiment of the present invention.

FIG. 21 is a partial perspective view of still another embodiment of the present invention.

FIG. 22 is a partial perspective view of still another embodiment of the present invention.

FIG. 23 is a partial perspective view and front sectional view of a further embodiment of the present invention.

FIG. 24 is a partial front cross-sectional view of still another embodiment of the present invention.

FIG. 25 is a partial front sectional view of still another embodiment of the present invention.

FIG. 26 is a perspective view showing a typical configuration of a conventional marker pile.

27 is a front view, a side view and a cross-sectional view of the land boundary line of FIG. 26 (c).

[Explanation of symbols]

11, 11a Marking pile 12, 24a, 24b, 26a, 26b, 26c Marking plate 12a, 12c Plate-like body 12b, 12d Lid-like body 13, 23a, 23b, 23c, 43, 28a, 28b
Foot 14 Welded portion 15,45 Recess 16 Opening 17a, 17b Anchor 20,22 Prepared hole 21 Cutting edge 25a, 25b, 27a, 27b, 27c Mark 29, 30 Tip member 32 Auxiliary mark 42 Lid 50, 53 Plug

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Masahiko Kawamura 4976 Nomura Minami-cho, Shinnanyo-shi, Yamaguchi Nisshin Steel Co., Ltd. Shunan Steel Works (72) Inventor Nozomi Yamamoto 4976 Nomura-minami-cho, Shinnanyo-shi Nisshin, Nisshin Shunan Steel Works, Ltd. (72) Yosuke Okamura 4976 Nomura Minami-cho, Shinnanyo-shi, Yamaguchi Nisshin Steel Co., Ltd. Shunan Steel Works

Claims (25)

[Claims] 1. A steel marker pile for driving or embedding, comprising: a steel plate-shaped body or lid-shaped body on which a marker is displayed; and a hollow steel cylindrical body having a base end. A cylindrical body whose side is joined to the back side of the plate-like body or to the end of the lid-like body and whose tip side extends in a direction substantially perpendicular to the surface of the plate-like body or the lid-like body or at a specific angle. A steel marker pile characterized by. 2. The steel according to claim 1, wherein the plate-shaped body or the lid-shaped body has a surface exposed on the ground surface and at least a part of the cylindrical body is buried in the ground. Made sign pile. 3. The steel marker pile according to claim 1, wherein at least a part of the lid-shaped body is buried in the ground, and all of the cylindrical bodies are buried in the ground. 4. The steel marker pile according to claim 1, wherein the steel mainly contains iron and chromium, or chromium and nickel. 5. The steel marker pile according to claim 4, wherein the steel contains copper. 6. The steel has a surface roughness of a maximum height Rmax.
It is in the range of 0.2 or more and 3.5 or less as an average value of the steel marker pile according to claim 1. 7. The steel marker pile according to claim 1, wherein the tubular body has a cross-sectional shape perpendicular to the axis substantially uniform in the axial direction. 8. The steel marker pile according to claim 1, wherein the tubular body has a cross-sectional shape perpendicular to the axis that changes in the axial direction. 9. The steel marker pile according to claim 1, wherein the tubular body has a cross section perpendicular to the axis in an endless shape in the circumferential direction. 10. The steel marker pile according to claim 1, wherein the cylindrical body has a cut in a circumferential direction of a cross section perpendicular to the axis. 11. The steel marker pile according to claim 1, wherein a cutting edge is formed on the tip side of the tubular body. 12. The steel marker pile according to claim 1, wherein a tapered tip member is integrally formed in the opening on the tip side of the tubular body. . 13. The steel according to any one of claims 1 to 10, wherein a spear-shaped body having a sharp tip can be detachably attached to the opening portion on the distal end side of the tubular body. Signpost. 14. The steel product according to claim 1, wherein a branch member extending in a direction substantially perpendicular to the axial direction can be detachably attached to the tubular body. Signpost. 15. The steel marker pile according to claim 1, wherein fin-shaped ribs extending substantially perpendicular to the axial direction are fixed to the tubular body. 16. The steel marker pile according to claim 1, wherein the plate-shaped body is formed of a steel plate. 17. The lid-like body is formed by joining a plate-like body to a short and small tubular body, or by pressing a steel plate. It is a steel bottomed tubular body, The steel sign pile in any one of Claims 1-16 characterized by the above-mentioned. 18. The same content as a sign displayed on a plate-like body or an upper surface of a lid-like body which is joined to the outer circumferential surface of the tubular body on the proximal end side or the lateral outer circumferential surface of the lid-like body. The steel sign pile according to any one of claims 1 to 17, wherein the sign is displayed by designating the position and direction of the sign. 19. The steel marker pile according to claim 1, wherein the plate-shaped body or the lid-shaped body is joined to the cylindrical body by welding. 20. A steel marker pile for driving or embedding, wherein a marker is displayed on the upper surface, and a lid-like body mainly made of synthetic resin and formed into a solid columnar shape is a hollow steel cylinder. A steel marker pile characterized by being inserted into one end of a strip. 21. The lid-like body is formed by combining synthetic resins of a plurality of colors so that the same sign as the surface appears on a cross section perpendicular to the axial direction. 20. A steel marker pile described in 20. 22. A steel marker pile for driving or embedding, which is the same as a marker to be displayed on the upper surface of a plate or lid on one end side of a hollow steel cylindrical body. A solid columnar body made of a combination of synthetic resins of multiple colors is inserted so that the sign appears in the cross section perpendicular to the axial direction by specifying its position and direction. A steel sign pile, wherein a steel plate or lid having a sign on the upper surface is welded to one end of a tubular body. 23. A plate-shaped body or a lid-shaped body is formed from a steel plate, and a concave portion or a convex portion corresponding to a sign is formed on the upper surface of the plate-shaped body or the lid-shaped body, and a preformed steel hollow is formed. Weld the back side of the plate or the end of the lid to the base end of the tubular body, and color the concave or convex portion on the upper surface of the plate or lid to display the marker. A method for manufacturing a steel marker pile, characterized by: 24. The method for manufacturing a steel marker pile according to claim 23, wherein the steel hollow cylindrical body is formed by forming a steel plate. 25. The recess corresponding to the marker on the upper surface of the plate or lid is one or more selected from the group consisting of press working, etching, electric discharge machining, grinding, electric pen machining, and laser machining. 25. The method for manufacturing a steel marker pile according to claim 23 or 24, wherein the method is formed by the method of.