JPS5925808Y2 - Iron drum for oil-filled cables - Google Patents

Description

[Detailed description of the invention] This invention relates to an iron drum around which an oil-filled cable (hereinafter referred to as OFF cable) is wound, and more specifically, to an iron drum with an improved connection between the bottom port of the OFF cable and the oil tank. be.

OFF cable is a type of cable in which the cable is always filled with insulating oil to a pressure higher than atmospheric pressure and sealed, so it is necessary to oil it not only after installation but also when it is wrapped around a drum. A fuel tank is installed in the tank.

Conventional pig iron drum for OF cables As shown in FIG. Cable bottom port 5
A lead oil supply pipe 7 connecting the cable lower port 5 to the drum oil tank 6 installed inside the winding drum 2 is inserted into a hole 9 drilled in the body plate 8. I was trying to do that.

Naturally, even when the OFF cable 0 is pulled out from the drum 1 and laid, it is necessary to supply oil from the oil supply tank 6.

However, as mentioned above, in the conventional drum in which the oil supply lead pipe 7 connecting the cable lower port 5 and the oil tank 6 passes through the body plate 8, when the cable lower port 5 is laid, the cable as shown in FIG. After attaching the oil tank 6a or 5'a, which is separate from the oil tank 6 fixed to the drum 1, to the upper cable port 11 or the lower cable port 5, the oil tank 6 attached to the drum 1 and the lower cable port It is necessary to perform separation work from 5.

As is clear from the foregoing, the oil tank 6 with good performance is the drum 1.
However, the drum winding cylinder becomes a hindrance during cable installation and requires constant lubrication.
Not only the oil tank 6 cannot be used, but also a separate oil tank 6a
In addition, there is a disadvantage that 6a is required, and it is necessary to switch the oil tank under pressure.Switching work requires a lot of man-hours and equipment, and improvements are desperately needed. is the current situation.

This idea was made in order to eliminate the above-mentioned drawbacks, and the lead pipe that connects the cable bottom and the oil tank is routed through a cut groove in the collar. To provide an iron drum in which an oil supply tank can be removed from the drum and used as it is when installing an OFF cable, eliminates the need for a separate oil supply tank or switching work, and allows extremely easy installation of an OFF cable.

Hereinafter, an embodiment of this invention will be explained with reference to the attached drawings of FIGS. 3 to 6. An inner ring 21 fixed to both sides of the winding drum 2 and an outer ring 22 concentric with the inner ring are welded or otherwise connected by corrugated side plates 23. By this means, an iron drum having a collar 3 which is connected and fixed in one piece is formed.

The corrugated side plate 23 and outer ring 22 of one collar 3 of the drum
The inner and outer rings 21 and 22 on both sides of this cut part are removed.
An inner wall 32 is provided between the opposing side walls 31 and 31, and cut grooves 25 and 33 are provided on the outside of the inner ring 21 and the outer peripheral edge of the inner wall 32, and rubber is provided at the edge of each cut groove. The oil supply is removably attached to the lower cable opening 5 of the oil-filled cable 10, which is fitted with a pipe protection ring 35 and supported on the shelf 4 provided inside the corrugated side plate 23, and inside the winding drum 2. The tank 6 is connected to the tank 6 by a lead oil supply pipe 26 that passes from the cut groove 33 between the side plates 31 and 31 and via the cut groove 25.
1. An end plate 34 that has the same peripheral surface as the outer ring 22 at the outer peripheral end of 1.31
The bolt receivers fixed to the inner sides of the side plates 31 and 31 are removably fixed with bolts 37 so that the bolt heads do not protrude from the projections 26.

The drum of this invention is constructed as described above, and the refueling lead pipe 26 connected to the cable lower port 5 does not protrude to the outside due to the cut groove 33 of the inner wall 32, the end plate 34, the side walls 31, 31, and the cut groove 25. By removing the end plate 34 and the oil tank 6, the cable 10 and the oil tank 6 can be removed from the drum while remaining connected by the lead oil pipe 26.

Therefore, there is no need to use a separate oil tank when laying the cable, and the need for complicated switching work and the use of equipment can be eliminated, and the efficiency and workability of the OF cable installation work can be greatly improved. .33 is fitted with a protective ring 35, which prevents the oil supply lead pipe 26 from shaking and is not damaged by the cut groove.

In addition, the side walls 31, 31 protect the refueling lead pipe 26 passing outside the collar 3, reinforce the cut portion of the corrugated side plate 23, and serve as a support for the end plate 34 that closes the cut groove 33, as shown in FIG. When the drum is supported and rotated by the under roller 38, there are practical effects such as the ability to completely protect the cut grooves 33.

[Brief explanation of the drawing]

Fig. 1 is a partially cutaway front view of a conventional iron drum, Fig. 2 is an explanatory diagram of the same cable laying work, Fig. 3 is a side view of the drum of this invention, and Fig. 4 is a main part of the same as above. FIG. 5 is a front view, FIG. 5 is a longitudinal sectional side view of the same, FIG. 6 is a plan view of the main part with the outer ring removed, and FIG. 7 is a side view showing the drum being rotated by an under roller. 2... Winding body, 3... Tsuba, 21...
... Inner ring, 22 ... Outer ring, 23 ... Waveform side plate, 25 ... Cut groove, 31 ... Side wall, 32 ... Inner wall, 33... cut groove,
34... End plate, 35... Protective ring,
37...Bolt.

Claims (1)

[Scope of utility model registration request] A flange is formed by connecting and fixing an inner ring fixed to both sides of the winding drum and a concentric outer ring to the inner ring with a corrugated side plate.The outer ring and the corrugated side plate of one of the flange of the iron drum are cut out, and the inner and outer rings of the cut part are cut out. The two wheels are reinforced with opposing side walls and inner walls, cut grooves are provided on the outside of the inner ring between the two walls, and on the outer circumferential surface of the inner wall, and a protective ring is fitted to the groove edge to form the same circumferential surface as the outer ring. An iron drum for an oil-filled cable, characterized in that an end plate is removably fixed to the cutout part of the outer ring.