JPS6449329U - - Google Patents
Info
- Publication number
- JPS6449329U JPS6449329U JP14588887U JP14588887U JPS6449329U JP S6449329 U JPS6449329 U JP S6449329U JP 14588887 U JP14588887 U JP 14588887U JP 14588887 U JP14588887 U JP 14588887U JP S6449329 U JPS6449329 U JP S6449329U
- Authority
- JP
- Japan
- Prior art keywords
- segment
- cross
- view
- sectional
- section
- 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
- 238000010586 diagram Methods 0.000 description 4
- 239000002184 metal Substances 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
Landscapes
- Lining And Supports For Tunnels (AREA)
Description
第１図は本考案の実施例メカニカルエキスパン
ダーヘツドの要部構造を示す軸方向（スグメント
長手方向）断面図、第２図ａは第１図のＡ―Ａ断
面図での軸直角断面拡大図、第２図ｂは第１図の
Ｂ―Ｂ断面図での軸直角断面拡大図、第３図は従
来のメカニカルエキスパンダーヘツドの基本構造
を示す軸方向断面図、第４図は同軸直角断面図、
第５図は従来のメカニカルエキスパンダーの要部
構造を示す軸方向（セグメント長手方向）断面図
、第６図ａは第５図のＤ―Ｄ断面における軸直角
断面拡大図、第６図ｂは第５図のＥ―Ｅ断面にお
ける軸直角断面拡大図、第７図ａは別の従来構造
を示すＤ―Ｄ断面における軸直角断面拡大図、第
７図ｂは同Ｅ―Ｅ断面における軸直角断面拡大図
、第８図〜第９図ａ，ｂ，ｃはそれぞれ実公昭６
１―４５９４０号公報に記載されたエキキスパン
ダーヘツドの要部構成を示す軸方向（セグメント
長手方向）断面図、及びＦ―Ｆ断面での軸直角断
面拡大図、Ｇ―Ｇ断面での軸直角断面拡大図、Ｈ
―Ｈ断面での軸直角断面拡大図、第１０図は第６
図ａ及び第６図ｂで示した構造のセグメントにお
いて拡管作業中セグメントに加わる負荷とセグメ
ントに発生する応力の状況を模式的に示した図、
第１１図は第７図ａ及び第７図ｂで示したセグメ
ントについて同様に示した模式図、第１２図は第
８図〜第９図ａ，ｂ，ｃで示したセグメントにお
いて同様に示した模式図である。
１……セグメント、２……コーン、３……金属
管（被加工体）、４……フランジ、５……Ｔガイ
ド、６……〓型キー溝、７……締結ボルト、８…
…丸底Ｖ型キー溝、９……補強ピン、１０……セ
グメントのボルト穴、１１……Ｔガイドのボルト
穴、１２……締結ボルト、１３……締結ボルトの
非ねじ加工部、１４……締結ボルトのねじ加工部
、１５……Ｔガイドのねじ加工部。
FIG. 1 is an axial sectional view (longitudinal direction of the segment) showing the main structure of a mechanical expander head according to an embodiment of the present invention, FIG. Fig. 2b is an enlarged cross-sectional view at right angles to the axis taken along line BB in Fig. 1, Fig. 3 is an axial cross-sectional view showing the basic structure of a conventional mechanical expander head, and Fig. 4 is a coaxial cross-sectional view at right angles.
Fig. 5 is an axial cross-sectional view (segment longitudinal direction) showing the main structure of a conventional mechanical expander, Fig. 6 a is an enlarged cross-sectional view perpendicular to the axis taken along the line DD in Fig. 5, and Fig. 6 b is Fig. 5 is an enlarged cross-sectional view perpendicular to the axis on the E-E cross section in Fig. 5, Fig. 7 a is an enlarged cross-sectional view perpendicular to the axis on the D-D cross section showing another conventional structure, and Fig. 7 b is a cross-sectional view perpendicular to the axis on the E-E cross section. Enlarged views, Figures 8 to 9 a, b, and c are from Jikko 6, respectively.
Axial direction (segment longitudinal direction) sectional view showing the main part configuration of the expander head described in Publication No. 1-45940, an enlarged view of the axially perpendicular cross section at the FF cross section, and an axis perpendicular view at the GG cross section Enlarged cross-sectional view, H
- An enlarged cross-sectional view perpendicular to the axis in the H section, Figure 10 is the 6th
A diagram schematically showing the load applied to the segment and the stress generated in the segment during pipe expansion work in the segment having the structure shown in Figures a and 6b,
Fig. 11 is a schematic diagram similarly shown for the segments shown in Figs. 7a and 7b, and Fig. 12 is a schematic diagram similarly shown for the segments shown in Figs. 8 to 9 a, b, and c. It is a schematic diagram. 1... Segment, 2... Cone, 3... Metal tube (workpiece), 4... Flange, 5... T guide, 6... Keyway, 7... Fastening bolt, 8...
... Round bottom V-shaped keyway, 9 ... Reinforcement pin, 10 ... Bolt hole of segment, 11 ... Bolt hole of T guide, 12 ... Fastening bolt, 13 ... Non-threaded part of fastening bolt, 14 ... ... Threaded portion of the fastening bolt, 15... Threaded portion of the T guide.
Claims (1)
各面にセグメントを配置し両者の軸方向の相対移
動により、セグメントの集合群が拡縮する方式の
メカニカルエキスパンダーにおいて、個々のセグ
メントとコーンの案内支承を行うＴ型のガイドを
セグメントにボルト止めする方式とし、該締結ボ
ルトの首下の非ねじ加工部分外径を、セグメント
の非ねじボルト穴及びＴ型ガイドの非ねじボルト
穴の両者に対し、ガタの無い様精度良く嵌合せし
める様にしたことを特徴とするメカニカルエキス
パンダー。 In a mechanical expander in which segments are arranged on each side of a cone that has a polygonal cross section and tapers in the axial direction, and the group of segments expands and contracts by relative movement of both in the axial direction, the guiding support of each segment and cone is The T-shaped guide is bolted to the segment, and the outer diameter of the unthreaded part under the neck of the fastening bolt is adjusted to ensure that there is no play in both the unthreaded bolt hole of the segment and the unthreaded bolt hole of the T-shaped guide. A mechanical expander that is characterized by being designed to fit together with high precision without any cracks.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14588887U JPS6449329U (en) | 1987-09-24 | 1987-09-24 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14588887U JPS6449329U (en) | 1987-09-24 | 1987-09-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6449329U true JPS6449329U (en) | 1989-03-27 |
Family
ID=31414874
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14588887U Pending JPS6449329U (en) | 1987-09-24 | 1987-09-24 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6449329U (en) |
-
1987
- 1987-09-24 JP JP14588887U patent/JPS6449329U/ja active Pending
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