JPS6391600U - - Google Patents
Info
- Publication number
- JPS6391600U JPS6391600U JP18576086U JP18576086U JPS6391600U JP S6391600 U JPS6391600 U JP S6391600U JP 18576086 U JP18576086 U JP 18576086U JP 18576086 U JP18576086 U JP 18576086U JP S6391600 U JPS6391600 U JP S6391600U
- Authority
- JP
- Japan
- Prior art keywords
- recessed hole
- hole
- lock bolt
- existing tunnel
- fixing nut
- 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.)
- Pending
Links
- 230000002093 peripheral effect Effects 0.000 claims 2
- 239000011324 bead Substances 0.000 claims 1
- 230000001681 protective effect Effects 0.000 description 3
Description
第１図は本考案保護キヤツプの斜視図、第２図
は補修用ロツクボルトが打設された既設トンネル
の断面図、第３図は本考案保護キヤツプの装着状
態を示す拡大縦断面図。
１は保護キヤツプ本体を成す略円柱体、２は凹
穴、３は雌ねじ付穴、４は頂面。
FIG. 1 is a perspective view of the protective cap of the present invention, FIG. 2 is a cross-sectional view of an existing tunnel in which repair lock bolts have been driven, and FIG. 3 is an enlarged vertical cross-sectional view showing the protective cap of the present invention installed. 1 is a substantially cylindrical body forming the main body of the protective cap, 2 is a recessed hole, 3 is a female threaded hole, and 4 is a top surface.
Claims (1)
コンクリートを通して打設されたロツクボルトの
定着ナツトを覆い隠す凹穴を有し、更にその凹穴
の底面の中央に、定着ナツトから突出している雄
ねじ部にねじ込まれる上記凹穴と同心状の雌ねじ
付穴を有し、凹穴の内径は、その凹穴の内周面と
定着ナツトの外周面との間に、そのナツトとアン
カープレートとの溶接ビードを覆い得る大きさに
形成されている既設トンネル補修用ロツクボルト
の頭部保護キヤツプ。 (2) 略円柱体の凹穴と反対側の端面は球面に形
成されている実用新案登録請求の範囲第１項記載
の既設トンネル補修用ロツクボルトの頭部保護キ
ヤツプ。[Claims for Utility Model Registration] (1) One end surface of a substantially cylindrical body has a recessed hole that covers the fixing nut of the lock bolt cast through the concrete lining of the existing tunnel, and the bottom surface of the recessed hole In the center, there is a female threaded hole concentric with the above-mentioned recessed hole into which the male threaded part protruding from the fixing nut is screwed, and the inner diameter of the recessed hole is between the inner peripheral surface of the recessed hole and the outer peripheral surface of the fixing nut. A cap to protect the head of a lock bolt for repairing an existing tunnel is sized to cover the weld bead between the nut and anchor plate. (2) The head protection cap for a lock bolt for repairing an existing tunnel as set forth in claim 1 of the utility model registration claim, wherein the end surface of the substantially cylindrical body opposite to the concave hole is formed into a spherical surface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18576086U JPS6391600U (en) | 1986-12-02 | 1986-12-02 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18576086U JPS6391600U (en) | 1986-12-02 | 1986-12-02 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6391600U true JPS6391600U (en) | 1988-06-14 |
Family
ID=31134689
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18576086U Pending JPS6391600U (en) | 1986-12-02 | 1986-12-02 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6391600U (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4827311U (en) * | 1971-08-06 | 1973-04-02 | ||
| JPS5121265U (en) * | 1974-08-03 | 1976-02-17 | ||
| JPS5515299A (en) * | 1978-07-17 | 1980-02-02 | Int Rectifier Corp | Large power transistor |
-
1986
- 1986-12-02 JP JP18576086U patent/JPS6391600U/ja active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS4827311U (en) * | 1971-08-06 | 1973-04-02 | ||
| JPS5121265U (en) * | 1974-08-03 | 1976-02-17 | ||
| JPS5515299A (en) * | 1978-07-17 | 1980-02-02 | Int Rectifier Corp | Large power transistor |
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