JPH0193298U - - Google Patents
Info
- Publication number
- JPH0193298U JPH0193298U JP18599487U JP18599487U JPH0193298U JP H0193298 U JPH0193298 U JP H0193298U JP 18599487 U JP18599487 U JP 18599487U JP 18599487 U JP18599487 U JP 18599487U JP H0193298 U JPH0193298 U JP H0193298U
- Authority
- JP
- Japan
- Prior art keywords
- grippush
- along
- segment
- stay member
- wall
- 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
- 230000002093 peripheral effect Effects 0.000 claims 2
- 230000003028 elevating effect Effects 0.000 claims 1
- 230000005641 tunneling Effects 0.000 claims 1
- 238000009412 basement excavation Methods 0.000 description 1
Description
第１図は本考案の一実施例である真円保持装置
の縦断正面図、第２図は同上真円保持装置におけ
る縦断側面図、第３図は従来の真円保持装置の縦
断正面図、第４図は同上従来の真円保持装置にお
ける縦断側面図である。
図中、１は真円保持装置、２は作業台、３は上
部グリツパシユ、４は下部グリツパシユ、５は地
山、６は掘削トンネル、７はシールド掘進機、８
はスライドジヤツキ、９は真円保持ジヤツキ、１
１はセグメントである。
Fig. 1 is a longitudinal sectional front view of a perfect circle holding device which is an embodiment of the present invention, Fig. 2 is a longitudinal sectional side view of the same perfect circle holding device as above, and Fig. 3 is a longitudinal sectional front view of a conventional perfect circle holding device. FIG. 4 is a longitudinal sectional side view of the conventional perfect circle holding device same as above. In the figure, 1 is a perfect circle holding device, 2 is a workbench, 3 is an upper grippash, 4 is a lower grippash, 5 is a ground, 6 is an excavation tunnel, 7 is a shield excavator, 8
is the slide jack, 9 is the perfect circle holding jack, 1
1 is a segment.
Claims (1)
ネルの内周壁に沿つて組み立てられるセグメント
壁を、その上部内周壁に沿つた上部グリツパシユ
と下部内周壁に沿つた下部グリツパシユとを互い
に径方向外方に離間移動させるべく押圧して真円
を保持するための装置において、上記下部グリツ
パシユを上部グリツパシユよりセグメントの内周
壁に大きく沿うように成型すると共に上記上部グ
リツパシユの両端部より下部グリツパシユ側に臨
んでステイ部材を垂下し、該ステイ部材の外側部
に上記下部グリツパシユの両端部を起立させてス
テイ部材の長手方向に沿つて移動自在に係合する
係合部を設け、該係合部と上記ステイ部材の外側
部との間に各グリツパシユを互いに径方向外方に
離間移動させて保持する昇降ジヤツキを介設した
ことを特徴とするセグメントの真円保持装置。 A segment wall that is assembled along the inner circumferential wall of an excavated tunnel excavated by a shield tunneling machine, etc. is constructed such that an upper grippash along the upper inner peripheral wall and a lower grippash along the lower inner peripheral wall are radially outward from each other. In a device for holding a perfect circle by pressing to move the lower grippush apart, the lower grippush is molded so as to follow the inner circumferential wall of the segment more closely than the upper grippush, and the lower grippush is shaped so as to face the lower grippush side from both ends of the upper grippush. The member hangs down, and an engaging portion is provided on the outer side of the stay member to engage with both ends of the lower grippush so as to be movable along the longitudinal direction of the stay member, and the engaging portion and the stay member A device for holding a segment into a perfect circle, characterized in that an elevating jack is interposed between the gripper and the outer portion of the gripper to move the grippers apart from each other in a radial direction and hold the grippers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987185994U JPH0619679Y2 (en) | 1987-12-08 | 1987-12-08 | Roundness holding device for segment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987185994U JPH0619679Y2 (en) | 1987-12-08 | 1987-12-08 | Roundness holding device for segment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH0193298U true JPH0193298U (en) | 1989-06-19 |
| JPH0619679Y2 JPH0619679Y2 (en) | 1994-05-25 |
Family
ID=31477246
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987185994U Expired - Lifetime JPH0619679Y2 (en) | 1987-12-08 | 1987-12-08 | Roundness holding device for segment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0619679Y2 (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS558798U (en) * | 1978-07-05 | 1980-01-21 | ||
| JPS5923120A (en) * | 1982-07-27 | 1984-02-06 | Koyo Seiko Co Ltd | Direct-acting ball bearing |
| JPS5923120U (en) * | 1982-08-04 | 1984-02-13 | アルプス電気株式会社 | push button switch |
-
1987
- 1987-12-08 JP JP1987185994U patent/JPH0619679Y2/en not_active Expired - Lifetime
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS558798U (en) * | 1978-07-05 | 1980-01-21 | ||
| JPS5923120A (en) * | 1982-07-27 | 1984-02-06 | Koyo Seiko Co Ltd | Direct-acting ball bearing |
| JPS5923120U (en) * | 1982-08-04 | 1984-02-13 | アルプス電気株式会社 | push button switch |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0619679Y2 (en) | 1994-05-25 |
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