JPH02101894U

JPH02101894U -

Info

Publication number: JPH02101894U
Application number: JP947789U
Authority: JP
Priority date: 1989-01-31
Filing date: 1989-01-31
Publication date: 1990-08-14

Description

[Brief explanation of drawings]

第１図は本考案の一実施例を示す縦断面図、第
２図は第１図のア，イ部詳細図、第３図は本考案
の他の実施例を示す縦断面図、第４図は第３図の
左側面図、第５図は第３図の―断面図、第６
図は第３図、第５図のウ，エ部詳細図、第７図、
第８図は従来技術の油圧回路図である。２……カツタヘツド、９……カツタヘツド中心
軸、１４……余掘りジヤツキ、１５……プツシユ
プルワイヤ、１６……ワイヤ、１６Ａ……ジヤツ
キ側ワイヤ端、１６Ｂ……機内側ワイヤ端、１７
……導管、１７Ａ……ジヤツキ側端末金具、１７
Ｂ……機内側端末金具、２１……指針、２２……
スケール、２４……スリツト開閉ジヤツキ。 Fig. 1 is a longitudinal sectional view showing one embodiment of the present invention, Fig. 2 is a detailed view of parts A and A of Fig. 1, Fig. 3 is a longitudinal sectional view showing another embodiment of the invention, and Fig. 4 is a longitudinal sectional view showing an embodiment of the present invention. The figure is a left side view of Fig. 3, Fig. 5 is a sectional view of Fig. 3, and Fig. 6 is a sectional view of Fig. 3.
The figures are Fig. 3, a detailed view of parts C and E of Fig. 5, Fig. 7,
FIG. 8 is a hydraulic circuit diagram of the prior art. 2... Cut head, 9... Cut head center axis, 14... Over-digging jack, 15... Push pull wire, 16... Wire, 16A... Jack side wire end, 16B... Machine inside wire end, 17
... Conduit, 17A ... Jack side terminal fitting, 17
B...Inside terminal fitting, 21...Pointer, 22...
Scale, 24...Slit opening/closing jack.

Claims

[Scope of utility model registration request]

In a shield excavator having a rotating cutter head, a push-pull wire that can be pushed and pulled by passing the wire through a conduit is pulled out from the jack storage part of the cutter head to the inside of the machine through the inner cavity of the center shaft of the cutter head, and the push-pull wire One wire end of the wire is attached to the rod side of the jack stored in the cutter head or a driven part connected thereto, one end of the conduit is attached to the cutter head or the head side of the jack, and the other end of the conduit is attached to the cutter head central axis. 1. A jacking stroke measuring device for a shield excavator, characterized in that the jacking stroke is indicated by the displacement of the other wire end which is attached to the inside end of the machine and pulled out to the inside of the machine.