JPH0127388Y2 - - Google Patents

Description

[Detailed description of the invention] This invention is a gripping tool that fixes a tube that protects the branch connection of an underground communication cable line and the main cable that comes out from the end of the tube, and at the same time holds the branch cable that comes out of the tube. Regarding.

Branch connections of underground wiring communication cables are covered with protective cases such as lead pipes or UG connection pipes, but conventionally the protective case itself was fixed in the hand hole, and the protective case and this case were The main cable coming out of the cable has been fixed either by a lead worker who directly melts and fixes the lead pipe and the cable sheath, or by using a metal grip installed inside the protective case.

For this reason, in the lead construction method, when the cable moves due to an external force, the lead construction part may be destroyed and flooded. Also, Figures 6 and 7
As shown in the figure, when the UG connection pin 16 is used, the gripping hardware 17 is housed inside the connection case, so the case becomes large and the hand hole that accommodates it also becomes large, which is uneconomical. It was hot. Furthermore, in order to fix the connection part in the hand hole, bolts, flat steel plates, and metal supports 18 are usually installed in the hand hole and fixed with tie strings 19, which has disadvantages such as poor workability. . In the figure, 9 indicates a main cable, and 11 indicates a branch cable.

This idea solves these shortcomings,
To provide a gripping tool for connecting and fixing both ends of a connecting tube with a branch in place of a conventional protective case and a main cable coming out of the tube, and further holding a branch cable coming out of the tube.

This invention will be explained below based on illustrated embodiments.

Figures 1 to 3 show an embodiment of this invention, and a gripping tool 1 in this embodiment has grooves 2 and 2' in which the main cable is fitted at both ends of a long and thin plate-like body, and an end of a connecting tube with a branch. A base metal fitting 4 formed with a series of grooves 3, 3' into which the grooves 2, 2' and 3,
semicircular arc-shaped fastening fittings 6, 6' arranged opposite to 3' and fastened to the base fitting 4 by bolts 5;
It consists of a plurality of branch cable holding hangers 7 extending in the direction in which the metal fittings 6, 6' are tightened and having one end fixed to the base metal fitting 4. The hanger 7 in this embodiment includes:
A set of two pins 8 are arranged in parallel at intervals approximately equal to the diameter of the branch cable.
It is formed by assembling.

Next, how to use the gripping tool 1 described above will be explained.

As shown in FIG. 2, in the branch section of an underground communication cable that employs this gripping tool 1, the part of the main cable 9 with its jacket removed is liquid-tightly covered with an inverted U-shaped branch connection tube 10. A plurality of branch cables 11 are pulled out downward from the lower side of the tube 10. Note that the connecting portion between the core wires of the main cable 9 and the core wires of the branch cable 11 is covered by a connection sleeve 12 that is attached to the tube 10 in a liquid-tight manner.

In the branch connection formed as described above,
Both ends of the tube 10 are inserted into the grooves 3 and 3' of the base metal fitting 4.
Also, by fitting the main cable 9 coming out of the tube 10 into the grooves 2, 2', and then tightening the clamping fittings 6, 6' to the base fitting 4 using the bolts 5, both ends of the connecting tube 10 and the tube are connected. The main cable 9 coming out from the entrance/exit is connected and fixed.

On the other hand, the branch cable 11 coming out from the connecting tube 10 forms a loop portion as shown in FIG. 2, and this loop portion is connected to the hanger 7 as shown in FIG.
It is held between pins 8 arranged in parallel. Thereafter, using the hanging metal fittings 13 provided at both ends of the base metal fitting 4, the gripping tool 1 itself is fixed to a support bolt arranged inside the handball, and the attachment work is completed.

Note that the hanger 7 may be provided only on one side of the base metal fitting 4, or may be formed by two plates 14 arranged vertically facing each other as shown in FIG. 4, or as shown in FIG. Branch cable 11
The plates 15 provided with holes therein may be arranged horizontally and vertically facing each other.

Furthermore, as shown in FIG. 4, the number of hangers 7 may be increased by forming a protrusion 4' on the base metal fitting 4, and the member forming the hanger 7, that is, the pin or plate, may have an intermediate portion. It may be fixed to the base metal fitting 4 as shown in FIG.

As explained above, the gripping tool according to this invention is installed in a hand hole by connecting and fixing both ends of a connecting tube with a branch, the main cable coming out from the end of this tube, and the branch cable coming out from the bottom side of the tube. Since the cable is directly attached to the supporting bolt, all external forces applied to the cable can be absorbed by the gripping hardware, thereby avoiding any effect on the connecting tube.

Another advantage is that the branch cable can be easily held using the hanger, and the connecting portion can also be easily installed in the hand hole.

[Brief explanation of the drawing]

Figures 1 to 3 show one embodiment of this invention, with Figure 1 being an exploded perspective view, Figure 2 being a front view showing how it is used, and Figure 3 being a perspective view showing details of the branch cable holding hanger. Figures 4 and 5 are perspective views showing other embodiments of the hanger, Figure 6 is a partially cutaway front view of a conventional UG connection pin installed in the hand hole, and Figure 7 is a perspective view of another embodiment of the hanger. FIG. 1...Gripper, 2, 3...Groove, 4...Base metal fitting, 5...Bolt, 6...Tightening metal fitting, 7...Branch cable holding hanger, 9...Main cable, 10...
... Connection tube with branch, 11 ... Branch cable,
12... Connection sleeve.

Claims (1)

[Scope of utility model registration request] A base metal fitting with grooves formed at both ends into which the main cable coming out of the connection tube with an inverted U-shaped branch and the end of the connection tube are fitted, and a semicircular arc-shaped groove that is removably attached to the base metal fitting facing each of the grooves. It consists of a tightening metal fitting, and a plurality of branch cable holding hangers extending in the tightening direction of this metal fitting and having one end or an intermediate portion fixed to the base metal fitting, and the main cable fitted in each of the grooves and the connecting tube end are connected to the tightening metal fitting. In addition, the branch cable coming out from the connecting tube forms a loop portion, and this loop portion is held between the parallelly arranged members of the holding hanger. Grip for connecting tube with branch.