JPS58159258U

JPS58159258U - Composite protective cap for the threaded end of the steel pipe unit

Info

Publication number: JPS58159258U
Application number: JP5606082U
Authority: JP
Inventors: 木島　清一
Original assignee: エツチ・アンド・ケ−株式会社
Priority date: 1982-04-17
Filing date: 1982-04-17
Publication date: 1983-10-24

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of drawings]

第１図は鋼管ユニットの中間部分を切除した断面図、第
２図は鋼管ユニット末端のめねじを対象とするこの考案
による複合保護キャップの部分断面図、第３図は鋼管ユ
ニット末端のおねじを対象とするこの考案による複合保
護キャップの一構成要素となる内外二重の短調管の斜視
図、第４図は　　　　　、鋼管ユニット末端のおねじを
対象とするこの考案による複合保護キャップの部分断面
図、第５図は第４図に示した保護キャップの倒立部分断
面図である。１・・・・・・鋼管ユニット、３・・・・・・鋼管ユニ
ット末端の台形めねじ、４・・・・・・鋼管ユニット末
端の台形おねじ、５・・・・・・台形めねじ用保護キャ
ップの一構成要素となる短調管、１０・・・・・・前記
短調管外周に形成した台形めねじ、１１．２２・・・・
・・レンチ溝、１９・・・・・・前記台形おねじ４に螺
着する前記短調管内周に形成した台形めねじ。Figure 1 is a cross-sectional view of the middle part of the steel pipe unit, Figure 2 is a partial cross-sectional view of the composite protective cap of this invention that targets the female thread at the end of the steel pipe unit, and Figure 3 is the male thread at the end of the steel pipe unit. Fig. 4 is a perspective view of a double inner and outer short tube, which is a component of the composite protective cap of this invention, which is intended for use with a steel pipe unit. 5 is an inverted partial sectional view of the protective cap shown in FIG. 4. 1...Steel pipe unit, 3...Trapezoidal female thread at the end of the steel pipe unit, 4...Trapezoidal male thread at the end of the steel pipe unit, 5...Trapezoidal female thread A short adjustment tube, which is a component of the protective cap for
... Wrench groove, 19... Trapezoidal female thread formed on the inner periphery of the short adjustment tube to be screwed into the trapezoidal male thread 4.

Claims

[Scope of utility model registration request]

(1) Trapezoidal female thread 3 with a slope cut on one end of the m-tube unit 1 and trapezoidal male thread 4 with a slope cut on the other end
Then, a hard elastic polyurethane elastomer having trapezoidal male threads 10 and trapezoidal female threads 19 with slopes, which can be screwed on and removed separately, formed at local key points, is made into a continuous integral piece of minor key, which is one component of the protective cap. A composite protective cap for the threaded end of a steel pipe unit that is fixed to the pipe.

(2) Large opening 6 at one end, slightly smaller opening 9 at the other end
and a short adjustment tube 5 which is a constituent element of the protective cap.
A hook-shaped part 7 formed on the periphery of the large opening of The trapezoidal male screw 10 to be formed is fixed to the minor adjustment cylinder 5 as a continuous piece of hard elastic polyurethane elastomer, and further, opposing wrench grooves 11 having a rectangular cross section are drilled on the surface of the hooked portion 7. A composite protective cap for a threaded end portion of a steel pipe unit as claimed in claim 1 of the registered utility model.

(3) The outer tube 15 is a short tube having a large opening 13 at one end and a large occlusion plate 14 at the other end, and the diameter of the opening in the center of the large occlusion plate 14 is approximately 1/3 of the diameter of the large occlusion plate. One end has a small opening 16 corresponding to , and the other end has a small closing plate 17,
Moreover, a trapezoidal female thread is formed on the inner periphery of the outer tube of the short adjustable tube 12, which is a short adjustable tube shorter than the outer tube 15 as the inner tube 18, so that it can be screwed into and removed from the trapezoidal male screw 4 cut at the end of the steel pipe unit. 19, a thick wall portion 20 formed on the surface of the large occluding plate 14 having a small opening 16' in the center, and a surrounding interior 21 formed on the outer periphery of the inner tube 18, made of hard elastic polyurethane. A continuous piece of elastomer is fixed to the inner and outer double short adjustment tube 12, and a wrench groove 22 with a rectangular cross section is drilled in the surface of the thick part 20 on the large occlusion plate surface across the small opening 16. A composite protective cap for a threaded end portion of a steel pipe unit as claimed in claim 1 of the registered utility model.