JPH032425A - Repairing method of manhole cover receiving frame - Google Patents
Repairing method of manhole cover receiving frameInfo
- Publication number
- JPH032425A JPH032425A JP1136697A JP13669789A JPH032425A JP H032425 A JPH032425 A JP H032425A JP 1136697 A JP1136697 A JP 1136697A JP 13669789 A JP13669789 A JP 13669789A JP H032425 A JPH032425 A JP H032425A
- Authority
- JP
- Japan
- Prior art keywords
- receiving frame
- manhole cover
- side wall
- padding
- grinder
- 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.)
- Granted
Links
- 238000000034 method Methods 0.000 title claims description 8
- 238000003466 welding Methods 0.000 claims abstract description 17
- 239000000463 material Substances 0.000 claims abstract description 15
- 229910001018 Cast iron Inorganic materials 0.000 claims abstract description 5
- 230000002093 peripheral effect Effects 0.000 claims abstract description 5
- 239000002826 coolant Substances 0.000 claims abstract 2
- 239000002689 soil Substances 0.000 claims 1
- 239000000498 cooling water Substances 0.000 abstract description 5
- UGKDIUIOSMUOAW-UHFFFAOYSA-N iron nickel Chemical compound [Fe].[Ni] UGKDIUIOSMUOAW-UHFFFAOYSA-N 0.000 abstract description 3
- 238000010276 construction Methods 0.000 abstract description 2
- 229910000669 Chrome steel Inorganic materials 0.000 abstract 1
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 abstract 1
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 6
- 229910001220 stainless steel Inorganic materials 0.000 description 5
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 description 3
- QDLZHJXUBZCCAD-UHFFFAOYSA-N [Cr].[Mn] Chemical compound [Cr].[Mn] QDLZHJXUBZCCAD-UHFFFAOYSA-N 0.000 description 3
- 235000011089 carbon dioxide Nutrition 0.000 description 3
- 238000005520 cutting process Methods 0.000 description 3
- 229910052742 iron Inorganic materials 0.000 description 3
- 229910000617 Mangalloy Inorganic materials 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 239000010935 stainless steel Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229910001209 Low-carbon steel Inorganic materials 0.000 description 1
- 239000010426 asphalt Substances 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000005552 hardfacing Methods 0.000 description 1
- 238000011900 installation process Methods 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 239000011572 manganese Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
Landscapes
- Underground Structures, Protecting, Testing And Restoring Foundations (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明は、損傷したマンホール蓋受枠の現場補修方法に
関するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for on-site repair of a damaged manhole cover frame.
マンホール蓋受枠は、長期間使用することによってマン
ホール蓋と擦れて摩滅したり、あたってクラックが入っ
たりする。そのままの状態で使用を続ければガタつき及
び騒音が激しくなる、車両通過時に鉄蓋に加わる衝撃荷
重を高める為亀裂の発生原因となって鉄蓋の耐用年数を
低下させる等の弊害が起きて（る為、定期的に検査を行
っである限度以上摩滅したり損傷したマンホール蓋受枠
は、新品と取替えていた。When the manhole cover frame is used for a long period of time, it may become worn out due to rubbing against the manhole cover, or cracks may appear due to contact with the manhole cover. If you continue to use the iron lid in this condition, it will cause problems such as rattling and noise, and increase the impact load applied to the iron lid when vehicles pass, which will cause cracks and reduce the service life of the iron lid ( To ensure this, manhole cover frames were inspected periodically and any manhole cover frames that were worn beyond a certain limit or damaged were replaced with new ones.
〔発明が解決しようとする課題］
マンホール蓋受枠の摩滅する部分は主としてその両者の
当接面であり、又クランクが入るとしても極く一部の部
分の場合が殆どである。このため、従来のように全て新
品と取り替えていたのでは不経済である。しかし、土中
に埋設されコンクリートで固められているマンホール蓋
受枠を取り外し、補修し、取りつけることを路上でやろ
うとすると多大な時間と労力を要し、そのマンホール蓋
受枠が交通量の多い場所に設置されている時には、著し
い交通障害の原因となることが予想される。また、マン
ホール蓋受枠を取り外さずに補修しようとすると取り外
し、取りつけの工程が省けるので工事時間の短縮は図れ
るものの、溶接等の熱の為にマンホール蓋受枠に歪みを
生じたり、冷却までの時間が多大にかかったり、周辺の
アスファルトを傷めることが予想されていた。このため
、従来は、不経済であるにも拘らず新品と取替える方法
がとられてきた。[Problems to be Solved by the Invention] The part of the manhole cover receiving frame that wears out is mainly the abutting surface between the two, and even if the crank is inserted, in most cases it is only a part of the part. For this reason, it would be uneconomical to replace all the parts with new ones as in the past. However, it takes a lot of time and effort to remove, repair, and install manhole cover frames that are buried in the ground and hardened with concrete on the street. When installed, it is expected to cause significant traffic disruption. In addition, if you try to repair the manhole cover frame without removing it, the removal and installation process can be omitted and construction time can be shortened, but the manhole cover frame may become distorted due to the heat of welding, and it may take longer to cool down. It was expected that it would cause a lot of damage and damage to the surrounding asphalt. For this reason, the conventional method has been to replace it with a new one, even though it is uneconomical.
本発明は、マンホール蓋受枠補修時に用いる溶接工程等
の熱のかかる場合に、効率的にマンホール蓋受枠を冷却
する方法に関するものである。The present invention relates to a method for efficiently cooling a manhole cover frame when heat is applied, such as during a welding process used in repairing the manhole cover frame.
すなわち、マンホール蓋受枠の有する溝に予め水および
又はドライアイスを満たしておくことで補修時にかかる
熱を効率的に吸収しようとするものである。That is, by filling the groove of the manhole cover frame with water and/or dry ice in advance, the heat applied during repair is efficiently absorbed.
マンホール蓋受枠の有する溝に予め満たされた冷却水又
はドライアイスがマンホール蓋受枠補修時に発生する熱
を吸収するので、マンホール蓋受枠が加熱されることは
ない。Cooling water or dry ice that is prefilled in the groove of the manhole cover frame absorbs the heat generated during repair of the manhole cover frame, so the manhole cover frame is not heated.
本発明は、マンホール蓋受枠を土中に埋設したままの状
態で、その摩滅損傷面を削落仕上げをなし（仕上げをな
し、受枠外周側壁と、その内側に外周側壁との間に凹溝
を形成するように設けられた内周側壁との間の凹溝内に
水および又はドライアイスを満たした後、該仕上げ面に
対鋳鉄用溶接材料を肉盛溶接し、更にその上に高マンガ
ン鋼あるいは高マンガン−クロム鋼等の硬化肉盛材料を
肉盛溶接するものである。この時に用いる本発明のマン
ホール蓋受枠の全体図が第１図であり、第２図は第１図
の断面図を拡大したものである。In the present invention, while the manhole cover receiving frame remains buried in the ground, its wear-damaged surface is polished off (finished), and a concave groove is created between the outer circumferential side wall of the receiving frame and the outer circumferential side wall on the inside thereof. After filling water and/or dry ice into the concave groove between the inner peripheral side wall and the inner peripheral side wall, welding material for cast iron is overlaid on the finished surface, and high manganese steel is further welded on top of the welding material for cast iron. Alternatively, hardened overlay materials such as high manganese-chromium steel are overlaid welded. An overall view of the manhole cover frame of the present invention used at this time is shown in Fig. 1, and Fig. 2 is a sectional view of Fig. 1. This is an expanded version of
ここで仕上げ面に対し、まず最初に行う肉盛溶接は、ニ
ッケル系材料、鉄−ニッケル系材料、軟鋼系材料あるい
は鋼−マンガン系材料等鋳鉄に対し接合性が良い材料を
用いるものとし、次いでその上に例えば高マンガン鋼や
高マンガン−クロム鋼等の硬化肉盛材料を肉盛溶接する
。For the first overlay welding performed on the finished surface, a material that has good bonding properties to cast iron, such as nickel-based material, iron-nickel material, mild steel material, or steel-manganese material, is used, and then A hardened overlay material such as high manganese steel or high manganese-chromium steel is welded thereon.
工程を追ってみると以下のようになる。If you follow the process, it will look like this:
■補修対象のマンホールの蓋を外し、■マンホール内へ
の物の落下を防止する為に、仮の中蓋やシールを張り、
■受枠の溝内に堆積した土砂等の異物を空気圧を利用し
たジェットタガネにより除去し、■クラックが入ったり
摩耗等で損傷している部分を、グラインダーまたは現場
切削加工機械を用い削る。■マンホール蓋受枠３の外周
側壁４と内周側壁５との間の凹溝６内に冷却水７を満た
し、■下剤りされた面に鉄−ニッケル系溶接材料を用い
肉盛溶接をする。この場合第２図に示す様に角の部分の
熟練度を要する為に、ステンレス鋼製丸棒１をこの角部
に当て、その外側に溶接金属２を盛る様にすると作業性
がよい。又この肉盛溶接の時にはマンホール蓋受枠の周
上の１カ所を集中的に溶接することなく、種種分散状に
溶接し、出来る限り受枠の温度を上昇させない様にする
。■Remove the cover of the manhole to be repaired; ■Place a temporary inner cover or seal to prevent objects from falling into the manhole;
■Remove dirt and other foreign matter that has accumulated in the grooves of the receiving frame using a jet chisel that uses air pressure. ■Remove cracked or damaged parts by using a grinder or on-site cutting machine. (1) Fill the groove 6 between the outer circumferential side wall 4 and the inner circumferential side wall 5 of the manhole cover frame 3 with cooling water 7, and (2) perform overlay welding on the treated surface using an iron-nickel welding material. In this case, as shown in FIG. 2, since skill at the corner portion is required, it is easier to work by applying the stainless steel round rod 1 to the corner portion and applying the weld metal 2 to the outside thereof. Also, during this build-up welding, welding is performed in a variety of distributed manner without concentrating welding on one location on the circumference of the manhole cover receiving frame, so as to prevent the temperature of the receiving frame from rising as much as possible.
■次いでグラインダにより肉盛部表面を仕上げ研削し、
■引続き高マンガン−クロム鋼等の硬化肉盛を施す。第
２図では２′が硬化肉盛材料を肉盛溶接することにより
形成された溶接金属部分である。なおこの硬化肉盛の時
もピーニングを行うと効果的である。■次いでグライン
ダーまたは現場切削加工機械を用いて肉盛部表面を仕上
げ加工す〔発明の効果〕
以上述べた来た様に、従来は損傷した受枠は、それを掘
り起こし新品と交換していた為に、その作業及びコンク
リートが固化する迄に多くの時間を要し、交通障害の原
因となっていたが、本発明によれば、損傷した受枠を埋
設したままの状態で、現場的に切削→肉盛溶接→研削仕
上げするので、作業開始から終了までに４〜５時間もあ
れば済むものであり、かつ又この作業はそれも分割して
行う事も出来るので殆ど交通障害の原因となる事はない
。■Next, finish grinding the surface of the built-up part using a grinder,
■Continue applying hardening of high manganese-chromium steel, etc. In FIG. 2, 2' is a weld metal portion formed by overlay welding a hard overlay material. It is also effective to perform peening during hardfacing. ■Then, use a grinder or on-site cutting machine to finish the surface of the built-up part [Effects of the invention] As stated above, in the past, damaged receiving frames were dug up and replaced with new ones. However, according to the present invention, while the damaged receiving frame remains buried, it takes a lot of time to perform the work and for the concrete to harden, and the process can be carried out on-site by cutting → fleshing. Since welding is then finished by grinding, it only takes 4 to 5 hours from start to finish, and since this work can be done in parts, it rarely causes traffic disturbances. do not have.
又肉盛溶接に際しては、マンホール受枠の独特の形状を
生かし、その凹溝内に冷却水を満たした状態で行うので
受枠やコンクリートの温度上昇による品質の低下はなく
、しかも用いる溶着金属によって耐摩耗性が大なる受枠
とする事も出来るものである。In addition, during overlay welding, we take advantage of the unique shape of the manhole receiving frame and fill the concave groove with cooling water, so there is no deterioration in quality due to temperature rises in the receiving frame or concrete, and the weld metal used has excellent wear resistance. Gender can also be a major factor.
第１図はマンホール蓋受枠の一部切欠側面図、第２図は
本発明方法を示す要部断面説明図である１・・・ステン
レス鋼製丸棒、２，２′・・・溶接金属、３・・・受枠
、４・・・外周側壁、訃・・内周側壁、６・・・凹溝、
７・・・冷却水、訃・・マンホール蓋。Fig. 1 is a partially cutaway side view of a manhole cover receiving frame, and Fig. 2 is a cross-sectional explanatory view of main parts showing the method of the present invention. 1... Stainless steel round bar, 2, 2'... Welded metal, 3... Receiving frame, 4... Outer circumferential side wall, butt... Inner circumferential side wall, 6... Concave groove,
7...Cooling water,...manhole cover.
Claims (1)
損傷面を削落仕上げをなし（仕上げ面）、受枠外周側壁
と、その内側に外周側壁との間に凹溝を形成する如く設
けられた内周側壁との間の凹溝内に冷却媒体を満たした
後、該仕上げ面に対鋳鉄用溶接材料を肉盛溶接し、更に
その上に硬化肉盛材料を肉盛溶接することを特徴とする
マンホール蓋受枠補修方法。While the manhole cover receiving frame remains buried in the soil, the wear-damaged surface is polished off (finished surface), and a groove is formed between the outer peripheral side wall of the receiving frame and the outer peripheral side wall on the inside thereof. After filling the concave groove between the inner circumferential side wall and the finished surface with a cooling medium, a welding material for cast iron is overlay welded on the finished surface, and a hard overlay material is further overlay welded on top of that. A manhole cover frame repair method.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1136697A JP2642192B2 (en) | 1989-05-30 | 1989-05-30 | Manhole cover receiving frame repair method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1136697A JP2642192B2 (en) | 1989-05-30 | 1989-05-30 | Manhole cover receiving frame repair method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH032425A true JPH032425A (en) | 1991-01-08 |
| JP2642192B2 JP2642192B2 (en) | 1997-08-20 |
Family
ID=15181362
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1136697A Expired - Lifetime JP2642192B2 (en) | 1989-05-30 | 1989-05-30 | Manhole cover receiving frame repair method |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP2642192B2 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20020083702A (en) * | 2001-04-30 | 2002-11-04 | 정희창 | Manhole |
| US6799921B2 (en) * | 2002-04-26 | 2004-10-05 | Shiga Sangyo Kabushiki Kaisha | Manhole cover/frame exchange method |
| US7723636B2 (en) | 2003-06-11 | 2010-05-25 | Ishikawajima-Harima Heavy Industries Co., Ltd. | Method for repairing machine part, method for forming restored machine part, method for manufacturing machine part, gas turbine engine, electric discharge machine, method for repairing turbine component, and method for forming restored turbine component |
-
1989
- 1989-05-30 JP JP1136697A patent/JP2642192B2/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20020083702A (en) * | 2001-04-30 | 2002-11-04 | 정희창 | Manhole |
| US6799921B2 (en) * | 2002-04-26 | 2004-10-05 | Shiga Sangyo Kabushiki Kaisha | Manhole cover/frame exchange method |
| US7723636B2 (en) | 2003-06-11 | 2010-05-25 | Ishikawajima-Harima Heavy Industries Co., Ltd. | Method for repairing machine part, method for forming restored machine part, method for manufacturing machine part, gas turbine engine, electric discharge machine, method for repairing turbine component, and method for forming restored turbine component |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2642192B2 (en) | 1997-08-20 |
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