JPH0218596U - - Google Patents

Info

Publication number
JPH0218596U
JPH0218596U JP9737488U JP9737488U JPH0218596U JP H0218596 U JPH0218596 U JP H0218596U JP 9737488 U JP9737488 U JP 9737488U JP 9737488 U JP9737488 U JP 9737488U JP H0218596 U JPH0218596 U JP H0218596U
Authority
JP
Japan
Prior art keywords
cylinder
passage
over
excavation
piston
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
Application number
JP9737488U
Other languages
Japanese (ja)
Other versions
JPH0542156Y2 (en
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to JP9737488U priority Critical patent/JPH0542156Y2/ja
Publication of JPH0218596U publication Critical patent/JPH0218596U/ja
Application granted granted Critical
Publication of JPH0542156Y2 publication Critical patent/JPH0542156Y2/ja
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Landscapes

  • Excavating Of Shafts Or Tunnels (AREA)

Description

【図面の簡単な説明】[Brief explanation of drawings]

第１図は本考案に係るシールドの余掘装置の一
実施例を示す図、第２図はそのシールドの縦断面
図、第３図は第１図のＡ部の拡大図、第４図は余
掘装置を駆動する他の油圧回路を示す図である。 図中、１１は余掘りカツタ、１２はピストン、
１３はシリンダ、２５，２６は通路、２７，２８
は弁である。 Fig. 1 is a diagram showing an embodiment of a shield excavation device according to the present invention, Fig. 2 is a vertical cross-sectional view of the shield, Fig. 3 is an enlarged view of section A in Fig. 1, and Fig. 4 is It is a figure showing other hydraulic circuits which drive an overexcavation device. In the figure, 11 is an extra digging cutter, 12 is a piston,
13 is a cylinder, 25 and 26 are passages, 27 and 28
is a valve.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] トンネル切羽を掘削する回転カツタの周縁部に
径方向外方に出没自在にシリンダで作動する余掘
りカツタを設けたシールドの余掘装置において、
上記シリンダのピストンに該ピストンによつて仕
切られたシリンダ内の両圧力室を連通する通路を
形成し、該通路にストロークエンドでこれを解放
する弁を設けたことを特徴とするシールドの余掘
装置。 In a shield over-excavation device, an over-excavation cutter operated by a cylinder is provided on the periphery of a rotary cutter for excavating a tunnel face, and is operated by a cylinder so as to be able to freely move outward in the radial direction.
An over-excavation of the shield characterized in that a passage is formed in the piston of the cylinder to communicate both pressure chambers in the cylinder partitioned by the piston, and a valve is provided in the passage to release the passage at the end of the stroke. Device.
JP9737488U 1988-07-25 1988-07-25 Expired - Lifetime JPH0542156Y2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9737488U JPH0542156Y2 (en) 1988-07-25 1988-07-25

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9737488U JPH0542156Y2 (en) 1988-07-25 1988-07-25

Publications (2)

Publication Number Publication Date
JPH0218596U true JPH0218596U (en) 1990-02-07
JPH0542156Y2 JPH0542156Y2 (en) 1993-10-25

Family

ID=31322785

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9737488U Expired - Lifetime JPH0542156Y2 (en) 1988-07-25 1988-07-25

Country Status (1)

Country Link
JP (1) JPH0542156Y2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08109793A (en) * 1994-10-12 1996-04-30 Kawasaki Heavy Ind Ltd Auxiliary cutter device for shield machine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08109793A (en) * 1994-10-12 1996-04-30 Kawasaki Heavy Ind Ltd Auxiliary cutter device for shield machine

Also Published As

Publication number Publication date
JPH0542156Y2 (en) 1993-10-25

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