JPH0336094U

JPH0336094U -

Info

Publication number: JPH0336094U
Application number: JP9675589U
Authority: JP
Priority date: 1989-08-21
Filing date: 1989-08-21
Publication date: 1991-04-09
Anticipated expiration: 2004-08-21
Also published as: JP2508330Y2

Description

[Brief explanation of the drawing]

図面はこの考案の一実施例を示し、第１図は小
口径管地中推進機械の全体図、第２図は先導管の
断面図、第３図は駆動機構の断面図、第４図はカ
ツタヘツドの拡大断面図、第５図はノズルの拡大
断面図、第６図は逆止弁の拡大断面図、第７図は
同分解斜視図である。１……発進立坑、４……推進装置、５……先導
管、６……小口径管、８……カツタヘツド、１０
……スクリユウコンベヤ、１０ａ……ケーシング
、１０ｃ……軸、１２……ピンチ弁、１８……ノ
ズル、１８ｃ……弾性シール、１９……噴出管、
２０……逆止弁。 The drawings show one embodiment of this invention; Fig. 1 is an overall view of a small diameter pipe underground propulsion machine, Fig. 2 is a sectional view of the leading pipe, Fig. 3 is a sectional view of the drive mechanism, and Fig. 4 is a sectional view of the driving mechanism. FIG. 5 is an enlarged sectional view of the cutter head, FIG. 5 is an enlarged sectional view of the nozzle, FIG. 6 is an enlarged sectional view of the check valve, and FIG. 7 is an exploded perspective view of the same. 1...Starting shaft, 4...Propulsion device, 5...Leading pipe, 6...Small diameter pipe, 8...Katsuta head, 10
... Screw conveyor, 10a ... Casing, 10c ... Shaft, 12 ... Pinch valve, 18 ... Nozzle, 18c ... Elastic seal, 19 ... Ejection pipe,
20...Check valve.

Claims

[Scope of Claim for Utility Model Registration] (1) A small-diameter pipe 6 with a leading pipe 5 attached to its tip is propelled underground by a propulsion device 4 installed in the starting shaft 1, and a Screw conveyor 1 installed in a leading pipe 5 and a small diameter pipe 6 to carry earth and sand excavated by a cutter head 8 provided therein.
In a small diameter pipe underground propulsion machine configured to discharge by 0, the shaft 1 of the screw conveyor 10 is
0c is formed from a pipe body, and fluid is injected into this shaft 10c from the starting shaft 1 side, and the shaft 10c is
A fluid ejection device for a small-diameter pipe underground propulsion machine, which is provided with a nozzle 18 and an ejection pipe 19 for ejecting fluid into the cutter head 8 and toward the face, at the end of the cutter head 8 side. (2) Inside the casing 10a of the screw conveyor 10 located inside the leading pipe 5, the casing 10
A claim comprising a pinch valve 12 that closes the inside of a.
(1) The fluid ejecting device described in (1). (3) The fluid ejecting device according to claim (1), wherein an elastic seal 18c and a check valve 20 are provided at the tips of the nozzle 18 and the ejecting pipe 19 to prevent backflow of earth and sand or sewage.