JPH0458044U - - Google Patents

Description

[Brief explanation of the drawing]

Figure 1 is a front view of the jumper pipe, Figure 2 is a cut end view of the present invention, Figure 3 is a front view of the bolt and loosening pipe, Figure 4 is the front view, and Figure 5 is the side view. be. 1, 2...Pipe piece, 3...Bolt, 4...Nut, 5...Loosening stopper pipe, M...Crimping tool body, R
...Rum.

Claims (1)

[Scope of Claim for Utility Model Registration] (1) In a jumper pipe in which pipe pieces each having a connecting part with a solid semicircular cross section at the end are connected one after another, both sides in the axial direction of both pipe pieces overlapped at the connecting part. A groove provided in the groove, a bolt hole that passes through the groove and has a rectangular opening at one end, and a rectangular base that is adjacent to the dish-shaped head and engages with the square opening, and both sides of the tip of the leg are cut out in parallel. It consists of a bolt with a notch, a nut that is screwed into the bolt, and a loosening stopper that has a central screw hole that can be screwed into the leg end of the bolt and has rounded outer corners. , a loosening stopper device in which the outer periphery of the loosening stopper is crimped onto the notch of the bolt. (2) A protrusion is formed on the ram head and its corresponding receiving surface so that the loosening stopper described in claim 1 of the utility model registration can be crimped onto the bolt notch at a location corresponding to the bolt notch, A hydraulic crimping tool with positioning rods protruding from both sides of the ram of the crimping tool body.