JPS6036996Y2 - Cable burial position and depth indicator - Google Patents

Description

[Detailed Description of the Invention] Technical Field of the Invention The present invention relates to a jig for indicating the buried position and depth of a directly buried cable.

Technical background of the idea and its problems Conventionally, in cable burying work especially in foreign countries, direct burying has been used, in which the cable is laid directly in the cable trench without using a protective trough, and then backfilled with mountain sand, etc. method is being adopted.

When backburying, the burial depth is specified for each cable, but conventionally there was no special jig to measure or mark the burial depth, so a box measure was placed on the laid cable. The conventional method of backfilling is to measure the approximate burial depth by placing a measuring tool such as a measuring tool, and it has been difficult to maintain a constant burial depth throughout the cable installation route.

Furthermore, even when re-excavating a cable route that has already been laid, conventionally the depth of burial under the cable protection plate often varied depending on the location for the above reasons, resulting in the difficulty of easily damaging the sheath. was there.

Purpose of the invention The present invention was made to solve these difficulties, and its purpose is to provide a jig that is used when burying a cable and indicates the buried position and depth of the cable.

Summary of the invention In this invention, a rod-like body is vertically erected at the center of the outer peripheral surface of a rubber or plastic semi-cylindrical body whose inner diameter is approximately equal to the outer diameter of the cable, and the burial depth is marked on the surface of the rod-like body. Relates to a cable burial position and depth indicator that includes marks.

Embodiments of the Invention The present invention will be further explained below based on embodiments shown in the drawings.

As shown in the drawings, the indicator of the present invention includes a semi-cylindrical body 1 made of a soft material such as rubber or plastic that does not cause damage to the cable sheath and having an inner diameter approximately equal to the outer diameter of the cable, and an outer peripheral surface of the semi-cylindrical body 1. A hole is cut out from the rod-shaped body 2 which stands perpendicularly to the contact surface of the circumferential surface at the center of the rod-shaped body 2, and on the surface of the rod-shaped body 2 there is a position of a predetermined size measured from the joint with the semi-cylindrical body 1. A mark 3 indicating the depth to be buried is attached to the hole.

Therefore, in order to perform cable burying work using the inventive marking device with such a structure, the semi-cylindrical body should be placed around the outer periphery of the cable at appropriate cable length intervals (for example, about 10 m). This indicator is placed so as to cover the surface, and earth and sand is covered up to the position of the mark indicating the burial depth made on the surface of the bar, and then the indicator is pulled out as necessary.

Further, in the present invention, the length of the rod-like body can be set to correspond to the burial depth from the beginning.

In that case, there is no need to pull out the indicator after burying the cable, and the cable can be buried as is.

Effects of the invention As is clear from the above description, the marking device of the invention allows the cable to be buried at a constant depth over its entire length, so even when the same cable route is re-excavated, There is no damage to the cable sheath etc.

Further, if the cable is left buried even after the cable burying work is completed, there is an advantage that the buried position of the cable becomes clear.

[Brief explanation of drawings]

The drawing is a front view of the present invention. 1... Semi-cylindrical body, 2... Rod-shaped body, 3.
·····mark.

Claims (1)

[Scope of utility model registration request] It has an inner diameter approximately equal to the outer diameter of the cable to be buried,
A rod-shaped body is erected at the center of the outer peripheral surface of a short semi-cylindrical body made of rubber or plastic perpendicular to the contact surface of the circumferential surface, and the burial depth is marked at a predetermined position on the surface of the rod-shaped body. A cable burial position and depth indicator comprising a mark attached thereto.