JPH036128Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to an improvement of a detention clamp for securing a power transmission line to a structure such as an iron tower.

The power transmission line is held down to the steel tower by a retaining clamp while it is being extended, and is stretched so as to jump over the steel tower. Conventionally, in order to connect a retaining clamp and a power transmission line, the power transmission line W is inserted into the clamp body 1 as shown in FIGS.
3 and the power transmission line W is used.

However, in such a conventional retaining clamp, the bolt insertion holes of the clamp body 1, wedge holding fitting 13, pull fitting 5, and splint fitting 6 are aligned at a high place, and the center bolt 2 is inserted to assemble the whole thing. work must be done. This work is not easy because each member is relatively heavy, and both the inner and outer members of the clamp body 1 must be assembled by matching the holes, and there is also a high risk of parts falling during the work. There was a problem.

The present invention was developed by focusing on the above-mentioned problems with conventional wedge-type retaining clamps.The wedge-holding metal fitting and the wedge are slidably connected in a dovetail style, and the wedge-holding metal fitting is equipped with a center bolt and a wedge. To solve the above-mentioned problem by providing a removable notch, inserting the wedge-holding metal fitting and the wedge together into the clamp body later, and engaging the wedge-holding metal fitting with the center bolt at this time. It is an object.

Hereinafter, embodiments of the present invention will be described with reference to the figures.
A clamp body 1 having a U-shaped cross section is connected to an iron tower via a handle fitting 5. The end of the pull fitting 5 is pivotally attached to the clamp body 1 with a center bolt 2. The splint 6, which has a U-shaped cross section and is attached so as to embrace the clamp body 1, is also attached to the center bolt 2.
It is fixed at

The wedge presser metal fitting 3 has a substantially triangular shape, with an arc-shaped notch 3a formed at one top, and a smooth dovetail-shaped bottom 3b.

A dovetail groove 4a is formed on the upper surface of the wedge 4 to slidably receive the dovetail 3b of the wedge holding fitting 3.
A groove 4b for receiving the power transmission line W is formed on the bottom surface. The dovetail groove 4a is slightly crushed on the tip side of the wedge 4 in order to prevent the wedge holding fitting 3 from coming off.

The jumper metal fitting 7 is used to guide the bending of the jump portion of the power transmission line W, and one end is connected to the base end of the wedge 4 by a U.
It is fixed with bolts 8, 8, and the other end is connected to the power transmission line W.
It is fixed to the jump portion with U bolts 9 and fastening fittings 10.

When using this restraining clamp to hold down a power transmission line, the power transmission line W is temporarily held on the iron tower using a come-along, etc., and the pull metal fitting 5 is attached to the iron tower in advance.
The power transmission line W is passed through the clamp body 1 connected via the clamp body 1. Next, the wedge presser metal fitting 3 and the wedge 4 are combined with each other at the dovetail 3b and the dovetail groove 4a, and with the wedge presser metal fitting 3 placed on the tip side of the wedge 4,
The wedge 4 is inserted into the clamp body 1 as one body, the top notch 3a of the wedge holding fitting 3 is engaged with the center bolt 2 in the clamp body, and in this state the wedge 4 is driven into the clamp body 1. Since the wedge holder 3 engages with the center bolt 2 and cannot move inside the clamp body 1, the wedge 4 enters the clamp body 1 while sliding against the bottom surface of the wedge holder 3, and the power line W is inserted into the clamp body 1. Tighten firmly.

As explained above, the present invention provides a wedge-type power transmission line retaining clamp with a notch 3a in the upper part of the wedge holding fitting 3 that can be connected to and detached from the center bolt 2.
, and since the wedge holder 3 and the wedge 4 are engaged with each other in a dovetail style so as to be able to slide relative to each other, the wedge holder can be inserted later into the clamp body 1 that has been installed in advance. 3 and the wedge 4 are integrated into one, which simplifies the work and reduces the risk of falling parts.

[Brief explanation of the drawing]

Fig. 1 is a front view, Fig. 2 is a sectional view of Fig. 1, Fig. 3 is a perspective view of the wedge presser and the wedge,
FIG. 4 is a sectional view of the same combination state, FIG. 5 is a front view of the conventional example, and FIG. 6 is a sectional view of FIG. 5. 1... Clamp body, 2... Center bolt, 3
...Wedge holding metal fitting, 3a...Notch, 3b...Dovetail, 4...Wedge, 4a...Dovetail groove, 5...Handle fitting, W...Power line.

Claims (1)

[Claims for Utility Model Registration] A power transmission line is inserted into a clamp body having a U-shaped cross section, which is pivotally attached to the end of a pull fitting connected to a structure by a center bolt, and In a clamp that holds down a power transmission line by driving a wedge between a wedge holding metal fitting supported by a bolt and the power transmission line, the wedge holding metal fitting has a state in which the center bolt is inserted into the clamp body, The clamp body has a notch at the top that can be freely engaged with and detached from the center bolt, and the wedge holding metal fitting and the wedge are engaged in a dovetail style so as to be slidable relative to each other so as not to separate from each other. A wedge-type retaining clamp characterized by being stopped.