JPS6022751Y2 - Compression type detention clamp for overhead power transmission lines - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a compression type detention clamp for overhead power transmission lines.

A conventional compression type retaining clamp for overhead power transmission lines is a steel for overhead ground wire in which a GAC3R steel core or an optical fiber is centrally inserted into a compression pipe 3 fixed to the bottom 2 of a steel clevis 1, as shown in Fig. 1. A twisted optical fiber 4 is inserted and pulled out from a hole 5 provided in the bottom 2 of the clevis.

In this case, the position of the retaining bolt 6 of clevis 1 is
The steel wire or optical fiber 4 drawn out due to its proximity to the bottom 2 has to be bent sharply in order to take it out.

7 is tightened with a nut. In the case of steel wires, this makes construction difficult due to the size of the steel wires and the distance between the bottom of the clevis and the retaining bolt, and in the case of optical fibers, it can cause failures due to breakage or disconnection.

The present invention solves the above-mentioned drawbacks, and in order to safely take out the steel wire or optical fiber by bending it into a large arc, the present invention fixes a pipe through which the steel wire or optical fiber is inserted, and communicates with the pipe through a bottom through-hole. The two clevises are connected by two opposing bolts such that the open end of the second clevis faces the through hole inside the clevis, and there is a gap on the axis of the through hole into which the steel wire or optical fiber enters. This is a compression type detention clamp for overhead power transmission lines.

This will be explained in detail with reference to the drawings in FIG.

49, the same reference numerals as in FIG. 1, which is a plan view and a front view, indicate the same parts, 1 is the first clevis, 8 is the second clevis, and 9 is the open end of the first clevis. Opposed to 5.

Reference numeral 10.11 is a facing bolt which connects and supports the first clevis 11 and the second clevis 8 on opposite sides, and the through hole 5 is connected between the tips of the two bolts on the axis of the through hole 5. a gap 12 into which the steel wire or optical fiber 4 passes;
will be established.

Numerals 13 and 14 are tightening nuts, and 15 is an insulator connecting portion of the second clevis.

The compression clamp for overhead power transmission lines of the present invention fixes an iron tube into which a copper wire or an optical fiber is inserted, and the open end of a second clevis is connected to the inside of a first clevis that communicates with the iron tube through a bottom through hole. The two clevises are connected by two opposing bolts such that there is a gap on the axis of the through-hole in which the steel wire or optical fiber enters, so that the steel wire or optical fiber that exits the through-hole is connected by two opposing bolts. The bolt can pass through the gap at the tip of the bolt, and can be taken out with a larger arc than before, and the length of the first clevis can be shortened.

[Brief explanation of drawings]

The drawings show a compression type retaining clamp for overhead power transmission lines. Figure 1A is a plan view of the conventional one, Figure 1A is a side view of the same, Figure 2A is a plan view of the present invention, and Figure 2A is its front view. It is a diagram. 1 is the clevis, 2 is the bottom, 3 is the compression pipe, 4 is the AC
3R central optical fiber to be inserted into the central steel wire or overhead ground wire, 5 is the through hole, 6 is the retaining bolt, 8 is the second clevis 1
．． 10.11 is the opposite connection bolt.

Claims (1)

[Scope of utility model registration request] A pipe through which a copper wire or an optical fiber is inserted is fixed, and the open end of a second clevis is located inside a first clevis communicating with the pipe through a bottom through hole, and the open end of a second clevis faces the through hole, and a steel wire or an optical fiber is attached on the axis of the through hole. A compression type retaining clamp for an overhead power transmission line, which is constructed by connecting the two clevises with two opposing bolts so that there is a gap through which the optical fiber enters.