JPS6311435Y2 - - Google Patents
Info
- Publication number
- JPS6311435Y2 JPS6311435Y2 JP1980007277U JP727780U JPS6311435Y2 JP S6311435 Y2 JPS6311435 Y2 JP S6311435Y2 JP 1980007277 U JP1980007277 U JP 1980007277U JP 727780 U JP727780 U JP 727780U JP S6311435 Y2 JPS6311435 Y2 JP S6311435Y2
- Authority
- JP
- Japan
- Prior art keywords
- sheet
- belt
- width
- strip
- shaped sheet
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
- 239000000463 material Substances 0.000 claims description 22
- 238000009958 sewing Methods 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 238000005260 corrosion Methods 0.000 claims description 2
- 230000007797 corrosion Effects 0.000 claims description 2
- 239000012209 synthetic fiber Substances 0.000 claims description 2
- 229920002994 synthetic fiber Polymers 0.000 claims description 2
- 229920003002 synthetic resin Polymers 0.000 claims description 2
- 239000000057 synthetic resin Substances 0.000 claims description 2
- 238000009412 basement excavation Methods 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- -1 pinylon Polymers 0.000 description 3
- 238000009933 burial Methods 0.000 description 2
- 239000002131 composite material Substances 0.000 description 2
- 239000000470 constituent Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000004677 Nylon Substances 0.000 description 1
- 239000004698 Polyethylene Substances 0.000 description 1
- 239000004743 Polypropylene Substances 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000004745 nonwoven fabric Substances 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 229920000728 polyester Polymers 0.000 description 1
- 229920000573 polyethylene Polymers 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
- 239000002759 woven fabric Substances 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E10/00—Energy generation through renewable energy sources
- Y02E10/20—Hydro energy
Landscapes
- Protection Of Pipes Against Damage, Friction, And Corrosion (AREA)
- Laminated Bodies (AREA)
Description
本考案は、地表堀削作業に対して地中埋設物の
存在を警示する警示装置に関する。
ガス管、上下水道管、電力、通信ケーブルなど
の地中埋設物は地表から見えないため、工事等の
ため地表堀削時に損傷を受けることがあり、これ
が原因で大事故に発展した事例も少なくない。
従来からビニール等の帯状のシートを埋設物の
上の地表に近い個所に埋設する方法が用いられ、
また単なるシートでは堀削機械のシヨベルなどで
容易に切断されてしまうので、これを改良し、シ
ートを折り畳んで、引張られれば伸びるように考
案されたシートも開発されている（実公昭53−
34001）。
しかし、この改良されたシートは帯状のシート
を単に長手方向に折り畳んで形成されているため
に次の欠点を有している。
地下埋設管は道路の長手方向に沿つて敷設され
て居り、堀削機械もその方向に作業されることが
多い為に、埋設されたシートに対して側方よりも
むしろ長手方向からシヨベルが当たることが多
い。上記の改良されたシートを用いた場合、シヨ
ベルが側方から操作された時には所期の効果を得
られるが、シヨベルがシートの長手方向から操作
された時には、シヨベルの先端がシートを下方に
抑えつけて損傷を与えるだけでシヨベルがシート
を引掛けて持ち上げない。このような操作が繰返
される間に、シートは引裂かれてしまい、工事業
者にシートの存在が気付かれずに終つてしまつた
事例が見られる。
このような欠点を除去するめため、実公昭51−
5212に開示されているように、帯状シートの内部
から帯状シートの一方の縁に達する幅方向の弱化
部分（たとえば切れ目など）と他方の縁に達する
幅方向の弱化部分とを、間隔をおいて交互に設
け、パワーシヨベルなどによる負荷によつて弱化
部分が引き裂かれ、その結果帯状シートの伸びが
もたらされる構成を有する地中埋設物の警示シー
トが考案されている。しかしながらこのような帯
状シートも、シート内に切れ目などの弱化部分を
設け、これが引き裂かれることによつて帯状シー
トの伸びがもたらされるという構成を有するため
以下の欠点を有する。
帯状シートの効果を充分に果すためには、帯状
シートが地上に露出する途中で完全に切断されず
に、地表から充分に伸びきつて地上に露出するこ
とが必要である。そのため帯状シートの伸びを大
きくする必要があるが、その構成としては、各弱
化部分相互の間隔を狭めるか、弱化部分の幅方向
の長さを大きくすることが考えられる。前者の場
合には、各弱化部分相互の間隔が狭まるのに対応
して、帯状シート状に印刷された注意表示および
会社名の文字も小さくしなければならない。帯状
シート警示機能を考慮すれば、弱化部分相互の間
隔を極端に狭めることができず、その結果帯状シ
ートの伸びが制約される。また後者の場合には、
弱化部分の幅方向の長さが大きくなるのに対応し
て帯状シートの引裂き強度が弱まる。したがつて
弱化部分の幅方向の長さを極端に大きくすること
ができず、その結果帯状シートの伸びが制約され
る。さらに帯状シートが完全に切断されるのを防
ぐため、帯状シート素材の選定に際しても、引裂
き強度の大きい丈夫な素材を要する。したがつて
帯状シート素材の選定の困難さおよび帯状シート
素材のコストアツプを招来する。
また地下埋設物が、幅の広いものであつたり、
細いものであつても何本かが並列に埋設されてい
て、幅広く埋設物に存在することを警示しなけれ
ばならない場合、上記のシートによれば警示した
い幅と同じ幅のシートが必要で価格の高いものに
なつてしまう。
本考案は、地中埋設管などの上方の地表浅くに
埋設して使用する装置であるが、本考案は上記改
良製品の欠点を解決することを目的としている。
本考案を図面について詳しく説明すると、第１
図に示すようにナイロン、ポリエステル、ピニロ
ン、ポリプロピレン、ポリエチレンなどの耐水性
および耐腐触性があり、かつ適度の引張りおよび
引裂き強度を持つ合成樹脂または合成繊維からな
るシート、織布、不織布などの単体ないしは貼り
合わせ等による複合体などの素材からなる帯状シ
ート１に、注意表示、会社名、連絡電話番号など
を変色し難いインキで印刷する。この帯状シート
１は、第２図に示すように同一平面上で延長方向
に対して略一定の角度θをもつてジグザグに所望
幅Ｗ内で折り返し、かつ帯状シートの各折り返部
４の相互間に間隙部２が生ずるように構成され、
全体として所望幅Ｗの長尺シート状物Ａが形成さ
れる。このように形成された長尺シート状物Ａ
は、中央部を破断可能なミシン糸３で縫製するこ
とによつて、保持される。
第３図は、長尺シート状物Ａの長さＬと、帯状
シート１の長さｌとの倍率の関係を示す図であ
る。本考案の構成材の帯状シート１の幅Ｂは３〜
50cmが一般的であり、出来上つた長尺シート状物
Ａの幅Ｗは10cm〜１ｍが一般的である。尚、長尺
シート状物の長さＬと帯状シートの長さｌの倍率
はシートを折返す角度θによつて規定される。す
なわち以下の式で表わされる。
倍率＝ｌ／Ｌ＝secθ
従つてθを変えることにより倍率を自由に選択出
来ることも本考案の大きな特長の一つである。倍
率と角度の相関は下表の通りであるが一般的にこ
の倍率は２倍以上が望ましいので、折返し角度θ
は60゜以上となる。
The present invention relates to a warning device for warning of the presence of underground objects during surface excavation work. Because underground objects such as gas pipes, water and sewage pipes, electric power, and communication cables are not visible from the ground surface, they can be damaged during surface excavation for construction work, etc., and there are few cases where this has led to major accidents. do not have. Conventionally, a method has been used in which a strip-shaped sheet of vinyl or other material is buried near the ground surface above the buried object.
In addition, since a simple sheet would be easily cut by a excavating machine's shovel, sheets were developed that could be folded and stretched when pulled.
34001). However, since this improved sheet is formed by simply folding a band-shaped sheet in the longitudinal direction, it has the following drawbacks. Underground pipes are laid along the length of the road, and excavation machines are often operated in that direction, so the shovel hits the buried sheet from the longitudinal direction rather than from the side. There are many things. When using the improved sheet described above, the desired effect can be obtained when the shovel is operated from the side, but when the shovel is operated from the longitudinal direction of the sheet, the tip of the shovel holds the sheet downward. The excavator will catch the sheet and will not lift it. While such operations are repeated, the sheet is torn and there have been cases where the construction company has not been aware of the sheet's existence. In order to eliminate these drawbacks,
5212, a weakened portion in the width direction (for example, a cut) reaching one edge of the strip sheet from the inside of the strip sheet and a weakened portion in the width direction reaching the other edge are spaced apart from each other. A warning sheet for underground objects has been devised in which the weakened parts are torn apart by the load of a power shovel or the like, and the belt-like sheets are stretched as a result. However, such a belt-shaped sheet also has the following drawbacks because it has a structure in which a weakened part such as a cut is provided in the sheet, and when this is torn, the belt-shaped sheet is stretched. In order to achieve the full effect of the belt-shaped sheet, it is necessary that the belt-shaped sheet is fully extended from the ground surface and exposed above the ground, without being completely cut off on the way to being exposed above the ground. For this reason, it is necessary to increase the elongation of the belt-shaped sheet, which can be achieved by narrowing the distance between the weakened portions or by increasing the length of the weakened portions in the width direction. In the former case, as the distance between the weakened parts becomes narrower, the letters of the warning signs and company name printed on the band-like sheet must also be made smaller. If the belt-shaped sheet warning function is taken into consideration, the interval between the weakened parts cannot be extremely narrowed, and as a result, the elongation of the belt-shaped sheet is restricted. Also, in the latter case,
As the widthwise length of the weakened portion increases, the tear strength of the belt-shaped sheet decreases. Therefore, the length of the weakened portion in the width direction cannot be made extremely large, and as a result, the elongation of the belt-shaped sheet is restricted. Furthermore, in order to prevent the strip sheet from being completely cut, a durable material with high tear strength is required when selecting the material for the strip sheet. This results in difficulty in selecting a strip-shaped sheet material and an increase in the cost of the strip-shaped sheet material. Also, the underground objects may be wide,
If several of them are buried in parallel, even if they are thin, and it is necessary to warn that they are present in a wide range of buried objects, according to the above sheet, a sheet with the same width as the one you want to warn is required, and the price is low. It becomes expensive. The present invention is a device that is used by being buried shallowly above the ground surface, such as underground pipes, and the purpose of the present invention is to solve the drawbacks of the above-mentioned improved products. To explain the present invention in detail with reference to the drawings, the first
As shown in the figure, sheets, woven fabrics, non-woven fabrics, etc. made of synthetic resins or synthetic fibers, such as nylon, polyester, pinylon, polypropylene, and polyethylene, have water resistance and corrosion resistance, and have appropriate tensile and tear strength. A caution display, a company name, a contact telephone number, etc. are printed with ink that does not easily change color on a belt-like sheet 1 made of a single material or a composite material such as a composite material bonded together. As shown in FIG. 2, this strip-shaped sheet 1 is folded back within a desired width W in a zigzag manner at a substantially constant angle θ with respect to the extending direction on the same plane, and each folded portion 4 of the strip-shaped sheet is It is configured such that a gap 2 is created between the
As a whole, a long sheet-like material A having a desired width W is formed. Long sheet material A formed in this way
is held in place by sewing the central part with breakable sewing thread 3. FIG. 3 is a diagram showing the relationship in magnification between the length L of the long sheet-like material A and the length l of the strip-like sheet 1. The width B of the band-like sheet 1 of the constituent material of the present invention is 3 to
The width W of the finished long sheet material A is generally 10 cm to 1 m. Incidentally, the magnification of the length L of the long sheet-like material and the length l of the belt-like sheet is defined by the angle θ at which the sheet is folded. That is, it is expressed by the following formula. Magnification=l/L=secθ Therefore, one of the major features of the present invention is that the magnification can be freely selected by changing θ. The correlation between magnification and angle is shown in the table below, but it is generally desirable for this magnification to be 2 times or more, so the folding angle θ
is over 60°.
【表】
以上のように本考案によれば、以下の効果を奏
する。
(1) 全体としては延長方向に埋設されていても、
構成要素である帯状シート１がジグザグに走行
しているから、シヨベルがどの方向から、例え
ば長手方向から操作されても帯状シート１の側
端部が引掛けられシート全体が持ち上げられ
る。
本考案に於いて全体の長尺シート状物Ａの長
さＬに対してこれを構成する帯状シート１の長
さは余裕をもつているので、シートが持ち上げ
られた場合にジグザグの折返しが伸ばされる状
態で追随するので、適当な引張り力と引裂力の
材料を以つて構成された場合、容易に切断され
てしまうことがない。
(2) 構成する帯状シート１自体の幅Ｂとは無関係
に長尺シート状物Ａの幅Ｗを形成出来るので、
広幅のものを作る場合のコストが安い。さらに
今、倍率、帯状シートの幅Ｂ、長尺シート状物
の幅Ｗが決められたとする。長尺シート状物の
幅Ｗは、コストが同じであればある程度広い方
が警示装置として広い面積をカバー出来るので
望ましい。
(3) 帯状シートに切れ目などを設けている前述の
従来技術では、負荷によつて切れ目が裂きさか
れた場合に切れ目起点部に応力集中が生じシー
ト素材の許容応力を超えた応力が発生し、これ
によりシートを切断してしまうおそれがある。
そのため従来技術では、許容応力の大きい素材
を必要とする。一方、本考案の場合は上述した
構成を有することから、帯状シートそれ自体に
は切欠き部分は一切設けられていない。したが
つて本考案の場合は、従来技術に比べ許容応力
の小さいシート素材で充分である。それ故、シ
ート素材の選定が容易であり、かつシート素材
費も極めて安価に抑えることができる。
(4) 帯状シートに切れ目などを設けている前述の
従来技術では、前述のように帯状シートの伸び
が制約される。一方本考案は、シートの折返し
角度θおよび折返し長さによつて、帯状シート
の伸びを自由に調節することができる。したが
つて道路の堀削作業の態様によつて、予め地表
表面より深く埋設しても埋設警示機能を充分に
果すことが可能である。また大型シヨベルなど
による工事作業の場合などでも、帯状シートは
地表から充分に伸びきつて地上に露出すること
が可能であり、埋設警示装置としての使用用途
が広い。
(5) 間隙部２が設けられているので、帯状シート
に対してどの方向から機械が操作されても、引
掛り易いと言う利点を有する。さらに埋設場所
に帯状シートの埋設を困難にする岩、コンクリ
ート塊等が存在している場合にも、間隙部２を
利用して比較的容易に帯状シートを地上面に平
行に埋設することができる。したがつて帯状シ
ートの埋設作業が容易であり、かつ長尺シート
状物の幅の有効利用を図ることができる。
(6) 長尺シート状物の形状保持は、長尺シート状
物の中央部をミシン糸で縫製する手段が用いら
れているので、極めて容易な生産工程で警示装
置を提供することができる。[Table] As described above, the present invention provides the following effects. (1) Even if it is buried in the extension direction as a whole,
Since the component sheet 1 runs in a zigzag pattern, no matter which direction the shovel is operated from, for example from the longitudinal direction, the side edges of the sheet 1 are hooked and the entire sheet is lifted. In the present invention, the length of the band-like sheet 1 constituting the long sheet-like object A has a margin with respect to the length L of the entire long sheet-like object A, so that when the sheet is lifted, the zigzag folds are not stretched out. Therefore, if it is made of a material with appropriate tensile strength and tear strength, it will not be easily cut. (2) Since the width W of the elongated sheet material A can be formed independently of the width B of the constituent strip sheet 1 itself,
The cost of making wide ones is low. Furthermore, it is assumed that the magnification, the width B of the belt-like sheet, and the width W of the long sheet-like object have been determined. It is preferable that the width W of the elongated sheet-like material is a certain degree of width, provided that the cost is the same, because the warning device can cover a wide area. (3) In the above-mentioned conventional technology in which cuts are provided in a belt-shaped sheet, when the cuts are torn by a load, stress is concentrated at the starting point of the cuts, and stress exceeding the allowable stress of the sheet material is generated. , this may cause the sheet to be cut.
Therefore, the conventional technology requires a material with a large allowable stress. On the other hand, since the present invention has the above-described configuration, the belt-shaped sheet itself is not provided with any cutout portions. Therefore, in the case of the present invention, a sheet material having a smaller allowable stress than that of the prior art is sufficient. Therefore, it is easy to select the sheet material, and the cost of the sheet material can be kept extremely low. (4) In the above-mentioned conventional technology in which cuts or the like are provided in the belt-shaped sheet, the elongation of the belt-shaped sheet is restricted as described above. On the other hand, in the present invention, the elongation of the belt-shaped sheet can be freely adjusted by changing the folding angle θ and the folding length of the sheet. Therefore, depending on the manner of the road excavation work, it is possible to sufficiently perform the burial warning function even if it is buried deeper than the ground surface in advance. Furthermore, even in the case of construction work using a large shovel, etc., the belt-shaped sheet can be sufficiently extended from the ground surface and exposed above the ground, and has a wide range of uses as a buried warning device. (5) Since the gap 2 is provided, there is an advantage that the machine is easily caught in the belt-shaped sheet no matter which direction the machine is operated from. Furthermore, even if there are rocks, concrete blocks, etc. that make it difficult to bury the strip sheet at the burial site, the strip sheet can be buried parallel to the ground surface relatively easily by using the gap 2. . Therefore, the work of embedding the strip sheet is easy, and the width of the long sheet can be effectively utilized. (6) Since the shape of the long sheet-like object is maintained by sewing the central part of the long sheet-like object with sewing thread, the warning device can be provided with an extremely easy production process.
第１図は帯状シートの斜視図、第２図は本考案
の一実施例の平面図、第３図は伸長倍率の関係を
示す図である。
Ａ……長尺シート状物、１……帯状シート、２
……間隙部、３……ミシン糸、４……折り返し
部、θ……折返し角度、Ｗ……長尺シート状物の
幅。
FIG. 1 is a perspective view of a belt-shaped sheet, FIG. 2 is a plan view of an embodiment of the present invention, and FIG. 3 is a diagram showing the relationship between expansion magnifications. A...Long sheet-like material, 1...Band-like sheet, 2
... Gap portion, 3... Sewing thread, 4... Folded portion, θ... Folded angle, W... Width of the long sheet-like object.
Claims (1)
は合成繊維製の素材から成る帯状シート１に、注
意標示ならびに会社名などを変色し難いインキで
印刷し、長手方向に対して略一定の角度θで帯状
シート１をジグザグに折返し、折返し部４の各相
互間に間隙部２が生ずように構成され、全体とし
て一定幅Ｗの長尺シート状物Ａを形成し、この長
尺シート状物Ａの中央部を破断可能なミシン糸３
で縫製して長尺シート状物Ａの形状を保持するこ
とを特徴とする地中埋設物の警示装置。 A belt-like sheet 1 made of a synthetic resin or synthetic fiber material that is water-resistant and corrosion-resistant is printed with a caution sign, a company name, etc. in ink that does not easily discolor, and is set at a substantially constant angle θ with respect to the longitudinal direction. The belt-like sheet 1 is folded back in a zigzag manner so that a gap 2 is created between the folded parts 4, and a long sheet-like object A having a constant width W is formed as a whole. Sewing thread 3 that can break the center part of A
1. A warning device for underground objects, characterized in that the shape of a long sheet-like object A is maintained by sewing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1980007277U JPS6311435Y2 (en) | 1980-01-24 | 1980-01-24 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1980007277U JPS6311435Y2 (en) | 1980-01-24 | 1980-01-24 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS56109493U JPS56109493U (en) | 1981-08-25 |
| JPS6311435Y2 true JPS6311435Y2 (en) | 1988-04-04 |
Family
ID=29603937
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1980007277U Expired JPS6311435Y2 (en) | 1980-01-24 | 1980-01-24 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6311435Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109826230A (en) * | 2019-01-18 | 2019-05-31 | 南通市市政工程设计院有限责任公司 | A kind of town road pipeline reinforcement protection structure and its construction method |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS515212U (en) * | 1974-06-27 | 1976-01-14 |
-
1980
- 1980-01-24 JP JP1980007277U patent/JPS6311435Y2/ja not_active Expired
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS515212U (en) * | 1974-06-27 | 1976-01-14 |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109826230A (en) * | 2019-01-18 | 2019-05-31 | 南通市市政工程设计院有限责任公司 | A kind of town road pipeline reinforcement protection structure and its construction method |
| CN109826230B (en) * | 2019-01-18 | 2021-03-30 | 南通市市政工程设计院有限责任公司 | Municipal road pipeline reinforcement protection structure and construction method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS56109493U (en) | 1981-08-25 |
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