JPS58152765A - Locking method for cable wind starting end - Google Patents

Abstract

PURPOSE:To lock the starting end of a cable wound onto a cable drum in an easy and accurate manner, by binding the cable wind starting end tight to one end of plural cords and pulling these cords by sectioning them in the longitudinal direction of the cable drum, while securing the other end tight enough to a flange plate of the cable drum. CONSTITUTION:Round bars 12 are disposed along the circumference of a flange plate 7 of an iron drum. On the other hand, a cable wind starting end part 3 is placed on a rack plate 9 secured tight to the outer surface of a drum barrel 8 and then the wind starting end part 3 is bound fast to each end of two hemp ropes 13 and 13', etc. In addition, these hemp ropes 13 and 13' are pulled in both cable winding and delivery directions of the cable drum, i.e., in the longitudinal direction of the cable drum while the other end is bound tight to the round bars 12 in front and rear of the cable binding part. And, in a state of pulling the cable wind starting end part 3 in the longitudinal diretion, the end part 3 is placed on the rack plate 9, then these hemp ropes 13 and 13' are bound firm to the flange plate 7 via the round bars 12 and the cable wind starting end part 3 is thus locked. According to this method, the conventional U-band settig for locking the said wind starting end part 3 can be well omitted.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for fixing the winding start end of a cable on a cable drum, particularly the winding start end of an OF cable on a steel cable drum.

Conventionally, the winding start end of an OF cable on an iron drum has generally been fixed by the method shown in FIGS. 1 and 2. To explain this, Fig. 1 is a schematic cross-sectional end view of an iron cable drum for explaining the conventional method of fixing the winding start end of an OF cable iron cable drum frame, and Fig. 2 is a schematic cross-sectional end view of an OF cable winding start end fixing method in Fig. 1. FIG. 2 is a schematic end view in vertical cross section, and the same parts in FIGS. 1 and 2 are designated by the same reference numerals. In Figures 1 and 2, l is O
In the F cable, 2 is a pressure oil tank fixed inside the drum body 8. Reference numeral 8 denotes the winding start end of the OF cable. One end of the winding start end 8 is fixed to the inner surface of the flange plate 7 of the iron drum Σ, the other end is fixed to the outer circumferential surface of the drum body 8, and the terminal end is fixed to the outer peripheral surface of the drum body 8. It is placed on a shelf board 9 formed by being fixed to the outer peripheral surface, and is held on the shelf board 9 by U bands 6,
The bolt parts fixed to the tips of both legs of the U band are inserted into through holes 10, 10 drilled in the collar plate 7 so as to protrude from the inside of the collar plate 7 to the outside, and nuts 11, 11 are inserted into the protruding bolt parts. 11 was screwed in and tightened, and the gripped cable winding start end 8 was fixed to the inner surface of the collar plate 7. On the other hand, the pressure control tank 2 and the end of the winding start end 8 of the OF cable are generally connected through a steel pipe or lead pipe 4 so as to communicate with each other. Connect the required length of OF cable l to the drum body 8 of the iron drum y.
When winding the cable 1 and transporting the drums to the destination, for example, when laying the OF cable 1 through an underground manhole, the drum body 8 is continuously rotated, unlike when the cable 1 is wound one by one on an iron drum. It is possible to install cables,
It is common practice to repeatedly start and stop the cable trunk 8 to lay the cable l. In this case, due to the shock of starting and stopping the cable body 8, the cable winding start end 8 tends to protrude from the shelf board 9 as indicated by the two-dot chain line 8' in FIG. There are cases where the steel pipe or lead pipe 4 that communicates and connects the terminal of the starting end 3 breaks and the OF cable is damaged, but such accidents can be prevented by the method of fixing the cable winding starting end 3 with a value-added configuration. Ru. However, in the more expensive method of fixing the cable winding start end 8, processing the collar plate 7, manufacturing the U band 6 itself, and attaching the U band 6 are troublesome, and therefore the cost of fixing the cable winding start end 3 is high. becomes.

The present invention was developed in view of cost considerations, and an object of the present invention is to provide a method for fixing the winding start end of an OF cable, which is simple and can reduce construction costs.

The gist of the invention lies in the structure of the cable winding start end fixing method described in the above claims.

Hereinafter, the present invention will be explained in detail with reference to the drawings showing embodiments thereof. FIG. 3 is an explanatory schematic end view of a cross section of an iron cable drum in which the present invention is implemented, and FIG. FIG. 4(b) is a sectional view taken along the line X--X in FIG. 4(a). Identical parts in FIGS. 3 and 4(a) and 4(b) are indicated by the same reference numerals, and the same parts as in FIGS. 1 and 2 are also indicated by the same reference numerals. Figures 8 and 4 (,)
In (b), 7 is a flange plate of an iron drum with radial corrugations formed for reinforcement. Inside the corrugated convex portion, round rods 12 having both ends fixed to the inside of the flange are arranged along the circumference of the flange plate 7 at appropriate pitches as shown in FIG. One solution is to place the cable winding start end 3 on a shelf board 9 similar to the shelf board 9 shown in FIGS. The hemp ropes 18 and 13' are tied together at one end of each string, and the hemp ropes 18 and 13' are pulled in the cable winding and sending directions of the cable drum, that is, in the front-rear direction of the cable drum, and the other ends are tied at the front and back of the cable lashing part. Then, the round rod 1 is secured to the provided round rod 12.
2, the hemp rope 13, 18' is fixed to the collar plate 7 to fix the cable winding start end 3.

Since this invention has a cost-effective configuration, it is possible to omit the U-band attachment for fixing the winding start end of the cable drum, and the U-band itself can be attached to the flange plate 7 for U-band attachment. It is no longer necessary to drill through holes 1O11O... for installation, and it is better to fix the cable winding start end with a string such as a hemp robe than to fix the cable winding start end with a U band. It is much easier to work with, and since the cable winding start end is directly fixed to the collar plate via a string such as hemp rope, the winding start end is fixed by the frictional force between the U-band and the cable winding start end. The starting end of the cable winding can be fixed more securely than when

This invention has an advantageous structure and effect, and according to this invention, the winding start end of the iron drum of the OF cable can be securely and economically fixed, and the winding start end of the iron drum of the OF cable can be fixed securely and economically. Since there is no risk of the connecting pipe connecting the pressure oil tank and the winding start end breaking, there will be no damage to the OF cable due to this, and the reliability of the steel cable will be greatly improved, resulting in industrial and economic benefits. The effect is remarkable.

Furthermore, the method of the present invention can be applied not only to fixing the winding start end of the cable body of an iron cable drum of an OF cable, but also to general cables such as CV cables, and has a wide range of applications.

[Brief explanation of the drawing]

Fig. 1 is a schematic cross-sectional end view of an iron drum for explaining the conventional method for fixing the winding start end of an OF cable iron cable drum frame, Fig. 2 is a schematic longitudinal cross-sectional end view of the OF cable winding start end fixing part in Fig. 1, The figure is a schematic cross-sectional explanatory end view of an iron cable drum in which the present invention is implemented, FIG.
) is a sectional view taken along the line X-X in FIG. 4 (,). l...OF cable knob, 2...pressure oil tank, 8
...OF cable winding start end, 4...Communication connection pipe, 7
...Brim part, 8...Body, 9...Shelf board, 12...
Round bar, 18.18'...hemp rope. #/Diagram, 2 Diagram, 3 [2] Pit 40

Claims (1)

[Claims] In an iron cable drum that winds and sends out cables, the starting end of the cable winding is tied to one end of a string such as multiple hemp ropes, and the strings are tied in the cable winding direction and the sending direction of the cable drum. That is, a cable winding start end fixing method is characterized in that the cable drum is divided in the front and back direction, and each string is pulled to fix the other end to the collar plate of the iron cable drum.