JPH0438615Y2 - - Google Patents

Description

[Detailed description of the invention] [Summary] Regarding the power supply cable end fixing mechanism of equipment for testing repeaters onboard a submarine cable laying ship, the present invention has been developed to allow the power supply cable to be fixed and removed with good workability and without damaging the power supply cable. A power supply cable termination having a power supply device, a power supply cable end fixing mechanism for fixing the end of the power supply cable connected to the repeater, and a connection mechanism for switching and connecting the power supply device to the power supply cable end fixing mechanism. The power supply cable end fixing mechanism of the repeater test device comprises: a fixed pedestal; a presser lid portion rotatable with respect to the fixed pedestal to cover or expose the upper surface of the fixed pedestal; It consists of a fixing screw that fixes the presser cover part so as to cover the fixed cradle, and an external conductor receiving bracket fixed to the fixed cradle so as to receive the external conductor of the power supply cable. A power supply cable outer sheath which is sandwiched and fixed between the fixing cradle and the presser cover, and the outer conductor of the power supply cable is sandwiched and fixed between the outer conductor receiver and the presser cover. a receiving metal fitting having an external conductor fixing mechanism, a terminal block, and a receiving part screwed onto the terminal block to receive a center conductor of the power supply cable and a connecting part to which the switching connection mechanism is connected; The center conductor of the power supply cable is connected between the receiving part of the receiving fitting and the holding terminal, which has a groove on the lower surface into which the central conductor fits, and a holding terminal that is screwed and fixed onto the receiving part. It is composed of a center conductor fixing mechanism section that is sandwiched between the central conductor fixing mechanism section and conductively fixed therebetween.

[Industrial application field]

The present invention relates to a power supply cable end fixing mechanism for a device for testing repeaters on a submarine cable laying ship.

When laying submarine cables, repeaters are tested on board the laying ship.

Figure 9 shows the configuration of the repeater test equipment onboard the installation ship. 1 is a power supply device, 2 is a cable termination device, and both are connected by a power supply cable 3.

The cable termination device 2 includes three power supply cable end fixing mechanisms 4, 5, and 6 on the power supply side, a switching connection mechanism 7 that is switched and connected to these, and a power supply cable end fixing mechanism 9, 10, and 11 on the Sea Earth 8 side and these. A switching connection mechanism 12 is provided which is switched and connected to.

In this relay test device, three cable drum repeaters can be tested at the same time by switching the switching connection mechanisms 7 and 12 described above.

15, 16, and 17 are cable drums.

The cable drum 15 has a repeater 18 on the way,
A submarine cable 21 to which cables 19 and 20 are connected is wound. A submarine cable 2 with repeaters 22, 23, and 24 connected to the cable drum 16 is connected to the cable drum 16.
5 is wound. A submarine cable 29 is wound around the cable drum 17 and has repeaters 26, 27, and 28 connected therebetween.

30 to 35 are power supply cables.

One end of the power supply cables 30 to 35 is connected to the power supply cable end fixing mechanisms 4 to 6, 9 to 11, and the other end is connected to the submarine cables 21, 25, 29 via joint boxes 36 to 41, and further to the test It is connected to repeaters 18-20, 22-24, and 26-28.

In the state shown in FIG. 9 in which the switching connection mechanisms 7 and 12 are connected to the cable end fixing mechanisms 4 and 9, respectively, power is supplied to the repeaters 18 to 20 of the cable drum 15, and these repeaters 18 to 20 are used for testing. be done.

By switching and connecting the switching connection mechanisms 7 and 12 to the cable end fixing mechanisms 5 and 10, respectively, power is supplied to the repeaters 22 to 24 of the cable drum 16,
The repeaters 22-24 are tested.

By switching and connecting the switching connection mechanisms 7 and 12 to the cable end fixing mechanisms 6 and 11, respectively, power is supplied to the repeaters 26 to 28 of the cable drum 17,
Repeaters 26-28 are tested.

After the test is completed, each of the power supply cables 30 to 35 may be removed from the power supply cable end fixing mechanisms 4 to 6, 9 to 11. All of this work is performed by the customer.

Therefore, the power supply cable end fixing mechanisms 4 to 6, 9 to
11, it is required that the power supply cable 30 can not only be firmly fixed, but also that the power supply cable 30 can be easily fixed and removed without damaging the power supply cable 30.

[Conventional technology]

FIG. 10 shows a conventional power supply cable end fixing mechanism 4A for fixing the end of the power supply cable 30. As shown in FIG.

The power supply cable 30 has a structure including, from the outside, a jacket (outer insulation coating) 50, an outer conductor 51 which is a metal braid, an insulator 52, and a center conductor 53.

The power supply cable end fixing mechanism 4A includes a jacket fixing mechanism section 54, an outer conductor fixing mechanism section 55, and a center conductor fixing mechanism section 56.

The outer covering fixing mechanism section 54 has a structure in which fixing metal fittings 57 are screwed at four locations with screws 58 to fix the outer covering 50.

The external conductor fixing mechanism section 55 has a structure in which a fixing metal fitting 59 is soldered to the external conductor 51 with solder 60, and this fixing metal fitting 59 is screwed at two places with screws 61.

The center conductor fixing mechanism section 56 has a structure in which the center conductor 53 is soldered to the connection terminal 62 using solder 63 .

[Problem that the invention attempts to solve]

As mentioned above, some parts depend on soldering, so
Power supply cable end fixing mechanism 4B for power supply cable 30
The work of fixing and removing the product requires the use of a soldering iron and melting the solder, which is difficult.

Moreover, as the fixation and removal are repeated several times, the power supply cable 30 deteriorates and its reliability decreases.

Furthermore, the workability is not good because there are a total of 6 screw-fastening locations.

SUMMARY OF THE INVENTION An object of the present invention is to provide a cable end fixing mechanism for a repeater testing device that allows a power supply cable to be fixed and removed with good workability and without damaging the power supply cable.

[Means for solving problems]

The present invention comprises a power feeding device, a power feeding cable end fixing mechanism for fixing an end of a power feeding cable connected to a repeater, and a connecting mechanism for switching and connecting the power feeding device to the power feeding cable fixing mechanism. The above-mentioned power supply cable end fixing mechanism of the repeater test device comprises: a fixed pedestal, a presser cover part that is rotatable with respect to the fixed cradle to cover or expose the upper surface of the fixed cradle, and the presser cover. a fixing screw for fixing the part to cover the fixed cradle, and an external conductor receiving bracket fixed to the fixed cradle so as to receive the outer conductor of the power supply cable, and the outer sheath of the power supply cable is A power supply cable jacket/outer conductor fixing which is sandwiched and fixed between the fixed cradle and the presser cover, and the outer conductor of the power supply cable is sandwiched and fixed between the outer conductor receiver and the presser cover. a mechanism section, a terminal block, a receiving metal fitting screwed onto the terminal block and having a receiving part for receiving the center conductor of the power supply cable and a connecting part to which the switching connection mechanism is connected; It has a groove into which the center conductor fits, and a holding terminal is screwed onto the receiving part, and the central conductor of the power supply cable is sandwiched between the receiving part of the receiving fitting and the holding terminal. and a center conductor fixing mechanism part that conducts and fixes the conductor.

[Effect]

The power supply cable jacket/external conductor fixing mechanism part fixes the power supply cable jacket with only screws without using solder, and conductively connects the external conductor to the receiving metal fitting.

The above-described center conductor mechanism secures the center conductor of the power supply cable by making the metal fitting electrically conductive by simply screwing the center conductor without using solder.

〔Example〕

Figure 1 shows the power supply cable end fixing mechanism 4 of the present invention.
Indicates one of B, 5B, 6B or 9B, 10B, 11B.

Each cable end fixing mechanism 4B, 5B, 6B, 9
B, 10B, and 11B have the same structure.

The power supply cable end fixing mechanism 4B includes a power supply cable jacket/outer conductor fixing mechanism section 70 and a center conductor fixing mechanism section 71. Both are fixed on an insulating base 72 at a predetermined distance apart.

First, regarding the fixing mechanism section 70, see FIGS. 1 and 3.
This will be explained with reference to FIG. 4, FIG. 5, and FIG. 6.

Reference numeral 73 denotes a fixed pedestal made of glass epoxy resin, which is fixed onto the base 72 with screws 81a to 81c. On the top surface of the fixed pedestal 73,
A groove 74 corresponding to the outer shape of the power supply cable 30 is formed.

In addition, on the top surface of the fixed pedestal 73, there are
The external conductor receiving fitting 75 shown in FIG. 1 is screwed with its solder tube-shaped receiving portion 75a fitting into the end of the groove 74 and the terminal portion 75b protruding outward from the fixed receiving base 73.

Reference numeral 76 denotes a presser cover, which is made of glass epoxy resin and is attached to the fixed pedestal 73 via a hinge 77, so that the upper surface of the fixed pedestal 73 is exposed as shown by the two-dot chain line in FIG. It is rotatable in the directions of arrows A and B between the position shown in FIG.

This presser lid portion 76 has a groove 78 at a portion opposite to the groove 74 described above.

Numerals 79 and 80 are fixing screws, respectively, which are provided on the presser cover portion 76 in such a manner that they will not fall off.

Next, regarding the center conductor fixing mechanism section 71, the seventh
This will be explained with reference to FIGS.

90 is a terminal block made of glass epoxy resin.

Reference numeral 91 denotes a receiving metal fitting, which includes a center conductor receiving part 92 for receiving the center conductor of the power supply cable, and a connecting part 93 extending forward from this.

This receiving metal fitting 91 is placed on the terminal block 90 and screwed together with the terminal block 90 onto the base 72 using screws 94a and 94b.

Reference numeral 95 denotes a holding terminal, which corresponds to the lower surface with a center conductor as shown in FIGS. 8A and 8B.

Reference numeral 95 denotes a holding terminal, and as shown in FIGS. 8A and 8B, a terminal plate 97 is screwed to the bottom surface of a terminal block 96 made of glass epoxy resin with screws 98a and 98b.

The lower surface of the terminal plate 97 has a U-shaped groove 99 that substantially corresponds to the center conductor.

The holding terminal 95 is placed on the center conductor receiving portion 92 of the receiving metal fitting 91.

Reference numerals 100 and 101 are fixing screws, respectively, and as shown in FIG. 8A, they are provided on the presser terminal 95 in such a manner that they will not fall off.

Next, operations for fixing the power supply cable 30 to the cable end fixing mechanism 4B having the above configuration will be explained.

The end of the power supply cable 30 is treated in the same manner as the conventional one shown in FIG.

First, the fixing screws 79 and 80 are loosened, and the presser cover portion 76 is rotated as shown by the two-dot chain line in FIG. 5 to expose the upper surface of the fixing pedestal 73. Further, the fixing screws 100 and 101 are loosened so that the holding terminal 95 can be lifted above the receiving metal fitting 91.

Next, as shown in FIG. 4, the power supply cable 3
0 is fitted into the lower half groove 74 of the outer sheath 50, the outer conductor 51 is fitted into the receiving part 75a, and placed on the receiving stand 73, and the central conductor 53 at the tip is connected to the receiving part 92 with a presser. The groove 99 is inserted between the terminal 95 and the terminal 95.
mated with.

Next, the presser lid part 76 is rotated in the direction of arrow B in FIG. Tighten.

Also, tighten the fixing screws 100 and 101.

Thereby, the power supply cable 30 is fixed as shown in FIGS. 1 and 3.

The jacket 50 of the power supply cable 30 has a groove 74 and a groove 7.
8 and is positioned by the fixed cradle 73.
and the presser cover part 76 and are fixed.

The external conductor 51 is sandwiched between the receiving portion 75a and the groove 78, and is electrically connected and fixed to the external conductor receiving fitting 75.

That is, the exterior 50 and the outer conductor 51 of the power supply cable 30 are fixed by the power supply cable jacket/outer conductor fixing mechanism section 70.

The center conductor 53 is positioned by fitting into the groove 99 and has a large contact area, and is sandwiched between the receiving portion 75a and the terminal plate 97 of the holding terminal 95, and is electrically connected to the receiving metal fitting 91. Fixed.

That is, the center conductor 53 of the power supply cable 30 is fixed by the center conductor fixing mechanism section 71.

As shown in FIG. 2, each power supply cable 30 to 3
5 is in the fixed state as described above, and one end is connected to the power supply device 1.
is connected to. By sequentially switching and connecting the switching connection mechanism 7 to the cable end fixing mechanisms 4B, 5B, and 6B, power is supplied to the repeater and the repeater is tested.

The fixed power supply cable 30 can be removed by performing the opposite operation to the above, that is, by tightening the fixing screws 79 and 8.
0, 100, and 101, and open the presser cover 76 by rotating it in the direction of arrow A, the power supply cable 30 is released from being clamped and removed.

In this way, since there is no soldering involved in fixing the end of the power supply cable 30, the power supply cable 30 will not be damaged at all even if it is repeatedly fixed and removed, and the power supply cable 30 can be used even after the fixation has been removed several times. can be connected reliably. Therefore, testing of the repeater can be performed with high reliability.

Firstly, no soldering work is required.
Second, since there are only four screws to be operated, the end of the power supply cable 30 can be fixed and removed with good work efficiency.

[Effect of idea]

As explained above, according to the present invention, the end of the power supply cable can be fixed entirely with screws without using solder, so no matter how many times it is fixed and removed, the power supply cable will not be damaged. Therefore, the reliability of the power supply cable can be guaranteed, the power supply cable can be used without any problem even after it has been repeatedly fixed and removed several times, and repeater tests can be performed with high reliability. There is also no need to discard the power supply cable after it has been fixed and removed several times, so there is no waste. Furthermore, since no soldering is required and all screws are required, the end of the power supply cable can be fixed and removed with good work efficiency.

[Brief explanation of drawings]

FIG. 1 is a front view of an embodiment of the power supply cable end fixing mechanism of the repeater testing device of the present invention, FIG. 2 is a plan view showing the power supply cable end fixing mechanism of the present invention in a juxtaposed state, and FIG. A plan view of the power supply cable end fixing mechanism of the present invention, Fig. 4 is a diagram similar to that shown in Fig. 3, with the presser cover and the presser terminal omitted, and Fig. 5 shows the power supply cable jacket/outer conductor fixing mechanism. Figure, Figure 6 A, B
Figure 7 is a perspective view of the center conductor fixing mechanism, Figure 8 A and B are diagrams showing the holding terminals, and Figure 9 shows the state of the relay test equipment during a repeater test. FIG. 10 is a diagram showing a conventional power supply cable end fixing mechanism. In the figure, 1 is a power supply device, 2 is a cable termination device, 3 is a power supply cable, 4B to 11B are power supply cable end fixing mechanisms, 18 to 20, 22 to 24, 2
6 to 28 are repeaters, 21, 25, and 29 are submarine cables, 30 to 35 are power supply cables, 50 is an outer jacket,
51 is an outer conductor, 53 is a center conductor, 70 is a power supply cable jacket/outer conductor fixing mechanism, 71 is a center conductor fixing mechanism, 72 is a base, 73 is a fixed pedestal,
74 is a groove, 75 is an external conductor receiving metal fitting, 75a is a receiving part, 75b is a terminal part, 76 is a holding lid part, 77 is a hinge, 78 is a groove, 79, 80, 100, 101 are fixing screws, 90 is a terminal block , 91 is a receiving metal fitting, 92
93 is a connecting portion, 95 is a holding terminal, 96 is a terminal block, 97 is a terminal plate, and 99 is a groove.

Claims (1)

[Claims for Utility Model Registration] Power supply device 1 and repeaters 18-20, 22-2
4, power supply cable 30 to which 26 to 28 are connected
Power supply cable end fixing mechanism 4B that fixes the end of 35
11B and a power supply cable termination device 2 having connection mechanisms 7 and 12 for switching and connecting the power supply device to the power supply cable end fixing mechanism, the power supply cable end fixing mechanism of the repeater test device includes: a fixed pedestal 73; , a presser lid part 76 that is rotatable relative to the fixed holder to cover or expose the upper surface of the fixed holder, and fixing screws 79 and 80 that fix the presser lid part in a state covering the fixed holder. and an external conductor receiving fitting 75 fixed to the fixed pedestal so as to receive the external conductor of the power supply cable, and the outer sheath 50 of the power supply cable 30 is placed between the fixed pedestal and the holding lid part. a power supply cable jacket/external conductor fixing mechanism section 70 that secures the power supply cable by sandwiching it between the outer conductor 51 of the power supply cable and sandwiching and fixing the outer conductor 51 of the power supply cable between the external conductor receiving fitting and the holding lid part;
and a terminal block 90, a receiving part 92 which is screwed onto the terminal block and receives the center conductor of the power supply cable, and a connecting part 93 to which the switching connection mechanism is connected.
and a holding terminal 95 having a groove 99 on the lower surface into which the center conductor fits and is screwed and fixed onto the receiving part, and the center conductor of the power supply cable is connected to the receiving metal fitting. A power supply cable end fixing mechanism for a repeater testing device, comprising a center conductor fixing mechanism part 71 which is sandwiched between the receiving part and the holding terminal to fix the conductor conductively.