JPS63121698U

JPS63121698U -

Info

Publication number: JPS63121698U
Application number: JP1073087U
Authority: JP
Priority date: 1987-01-29
Filing date: 1987-01-29
Publication date: 1988-08-08
Anticipated expiration: 2002-01-29
Also published as: JPH053594Y2

Description

[Brief explanation of the drawing]

第１図は本考案のシールド型トンネル掘削機の
一実施例を示す図であつて掘削機のシールド本体
を断面して示す図、第２図は第１図の掘削機を示
す拡大断面図、第３図は第２図の左側面図、第４
図は第３図の４―４線に沿つて得た断面図、第５
図はメカニカルシールの部位の拡大断面図である
。１０：シールド型トンネル掘削機、１２：シー
ルド本体、２６：隔壁、３２：クランク軸、３０
：内歯歯車、３６：ロータ、４８：メカニカルシ
ール、５０：凹所、５２：リング、５４：受け座
、５６：ばね、４６：外歯歯車。 Fig. 1 is a diagram showing an embodiment of the shield type tunnel excavator of the present invention, and is a cross-sectional view of the shield main body of the excavator, and Fig. 2 is an enlarged sectional view showing the excavator of Fig. 1. Figure 3 is the left side view of Figure 2,
The figure is a cross-sectional view taken along line 4-4 in Figure 3.
The figure is an enlarged sectional view of the mechanical seal. 10: Shield type tunnel excavator, 12: Shield body, 26: Bulkhead, 32: Crankshaft, 30
: Internal gear, 36: Rotor, 48: Mechanical seal, 50: Recess, 52: Ring, 54: Receiver, 56: Spring, 46: External gear.

Claims

[Claims for Utility Model Registration] (1) A shield main body, a rotor disposed in the front area of the bulkhead within the shield main body, and a rotor disposed within the shield main body behind the rotor, the rotor being disposed in the front area of the bulkhead within the shield main body, The rotor includes means for supporting the main body so as to be eccentrically movable around a central axis of the main body, a driving means for eccentrically moving the rotor, and a sealing means disposed between the supporting means and the rotor, the sealing means comprising: provided at a location where one of the support means and the rotor faces the other, and opened toward the other of the support means and the rotor;
an annular recess around the central axis, a ring disposed in the recess so as to be movable in the direction of the central axis and having a substantially constant outer diameter; where the diameter of the ring is D ₁ , the maximum diameter of the support means and the rotor at a point in contact with the other ring is D ₂ , and the amount of eccentricity of the eccentric movement is e , D ₁ ≦D ₂ −2e. (2) the ring has a main body slidably received in the recess and a ring extending from an end of the main body on the other side of the support means and the rotor toward the other of the support means and the rotor; The shield type tunnel excavator according to claim (1), which has a protrusion extending coaxially with the main body. (3) The shield according to claim (1) of the utility model registration, wherein a receiving seat that comes into contact with the ring is arranged at a portion of the support means and the other of the rotor that comes into contact with the ring. model tunnel excavator.