JPS6437595U

JPS6437595U -

Info

Publication number: JPS6437595U
Application number: JP13223587U
Authority: JP
Priority date: 1987-09-01
Filing date: 1987-09-01
Publication date: 1989-03-07

Description

[Brief explanation of the drawing]

第１図は本考案の一実施例を示す断面図、第２
図は屈折状態を示す断面図、第３図は従来例の断
面図である。１：後胴、２：前胴、３，４：ガイド部材、３
ａ：球面状内側摺動面、４ａ：球面状外側摺動面
、５：弾性シール部材。 Fig. 1 is a sectional view showing one embodiment of the present invention;
The figure is a cross-sectional view showing a refracted state, and FIG. 3 is a cross-sectional view of a conventional example. 1: Rear body, 2: Front body, 3, 4: Guide member, 3
a: Spherical inner sliding surface, 4a: Spherical outer sliding surface, 5: Elastic sealing member.

Claims

[Scope of utility model registration request]

In a shield excavator having a shield body in which the front part of the rear body and the rear part of the front body are connected so as to be bendable about a refraction center on the axis, a spherical shape centered at the refraction center is provided on the front peripheral edge of the rear body. A guide member with an inner sliding surface is provided protrudingly, and a guide member with a spherical outer sliding surface that is in sliding contact with the spherical inner sliding surface is provided protrudingly on the rear peripheral edge of the front body, and the guide member with a spherical outer sliding surface is in sliding contact with the front peripheral edge. 1. A shield excavator, characterized in that an elastic seal member is disposed in succession between the rear peripheral edge portions, and lubricating oil is sealed between the guide member and the outer elastic seal member.