JPH0411356Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Industrial Application) The present invention relates to an improvement of a repeater for branching power lines of construction power sources for cable installation and the like.

(Prior art) Generally, in construction work in which electric wire cables are laid on bridges or in underground tunnels, 10 to 30 caterpillar type pulling machines 2, 2 are installed at predetermined intervals as shown in Figure 1. A power line 1 such as a captire cable is used to supply power to the installation equipment of ', 2'', . This is a branch connection to the machine.
Note that 15 is a transformer.

Although these works are usually carried out outdoors, if the work is carried out in the rain or underground, it is necessary to take measures to prevent electrical leakage caused by water. For this reason, the outside of the points 5, 5', 5'', ... where the conductors are connected is covered with rubber.
It was molded using plastic. However, in order to frequently move the power line within a short period of time, it is necessary to cut the connected parts each time and perform the connection work one after another, which requires a great deal of labor and time.

Incidentally, it is not preferable to insulate the conductor connection points by wrapping them with rubber or plastic tape because there is a risk of water leakage from the weighted portion of the tape.

Also, some connections are made using a cable reel with a connector, but if a tensile force is applied to the cable at the connector insertion point, it may easily come off. It was accompanied by great difficulties.

Furthermore, the plug-in and screw-type connectors are easy to connect and disconnect, and when not in use, the blind cap can be screwed to prevent rainwater from entering. However, it is not possible to make multiple branch connections, and the measures for rainproofing and waterproofing during use are unreliable.

(Problems to be solved by the invention) As a result of intensive research in view of the current situation, the present invention is based on a rainproof and waterproof structure that enables multiple branch connections in a plug-in and screw-type connector, and is shockproof. We have developed a power line repeater that has excellent mechanical strength such as power and is easy to install.

(Means for solving the problem) The present invention is a power line repeater that branches from a power line to supply power to a desired number of electrical devices provided at predetermined intervals, and a partition plate that fixes a cable connector inside the power line repeater. A rainproof connector is attached to one end of a housing provided with a desired number of branch connectors on the outside surface, and a panel connector is attached to the other end, respectively, and a power source that can be inserted airtight into the housing via the rainproof connector and the panel connector. The wires are connected to the branch connector and branched, and an insulating resin is injected into the housing to cover each connector and power line within the housing with the insulating resin, and the outside of the housing is made of resin foam. It is characterized by being covered with the body.

The electrical equipment mentioned above is, for example, one used for general construction wiring such as a caterpillar type pulling machine, a lighting cable wiring device, and a power tool.

The power line repeater of the present invention is characterized in that the bottom or side surface of the housing is covered with a buoyant body made of a foam material such as polyethylene foam,
This allows the housing to float on the water surface.

The material of the housing is made of iron plate and plastic.

Also, an insulating material such as epoxy resin is injected into the inside of the housing to prevent moisture from penetrating into the housing.

(Example) As shown in FIG. 2, a power line 1 made of a four-core cable such as a captire cable is connected to a rainproof connector 7 and a panel connector from both ends into a housing 6 made of polyvinyl chloride and made of a main parallelepiped. A partition plate 9 connected through the terminals of 8 and provided inside.
Fix the rainproof connector 7 with a screw.

Also, branch connectors 10, 1 are provided on the side of the housing 6.
0' is inserted into the interior of the mounting casing 6, and the power line 1 is branched and connected to the terminal of the connector.

Note that a blind cap can be screwed into the outside of each connector.

As shown in FIG. 3, the bottom and side surfaces of the housing 6 are covered with a polyethylene foam 11, and the top thereof is covered with a cover 13 having a hanging device 12 such as a string or hanging belt made of rubber or plastic canvas. As shown in FIG. 4, the joints of the cover 13 were joined with fasteners or tie strings 14 to obtain a relay for the power line of the present invention.

Note that 16 and 16' are blind caps.

(effect) The effects of the present invention are as follows.

(1) The power line can be branched and connected to each caterpillar type pull-out line with simple work, and even if a tensile force is applied to the power line, the connector is firmly fixed with the partition plate, so the power line can be connected easily. It does not come off and can be used with confidence.

(2) Each connector and power line on the housing is coated with insulating resin, so even if rainwater etc. enters the housing, there is no risk of electrical leakage.

(3) Cable connection work can be easily performed during cable installation because it is sufficient to simply attach the repeater without having to perform work such as molding on the connection part.

(4) Since the outside of the repeater is covered with synthetic resin foam, it can be used above the water surface and has excellent waterproofness, shock resistance, and vibration resistance.

[Brief explanation of drawings]

Fig. 1 is a schematic explanatory diagram of cable installation work, Fig. 2 is a sectional view showing an example of the power line repeater of the present invention,
FIG. 3 is a side sectional view showing another example of the power line repeater of the present invention, and FIG. 4 is a top view showing another example of the power line repeater of the present invention. 1... Power line, 2, 2', 2"... Catapillar type pulling machine, 3... Cable drum, 4... Cable, 5, 5', 5"... Connection part, 6... Housing, 7...
...Rainproof connector, 8...Panel connector, 9
...Partition plate, 10,10'...Branch connector,
11...foam, 12...hanger, 13...cover.

Claims (1)

[Scope of utility model registration request] In a power line repeater that branches from a power line and supplies power to each of a desired number of electrical devices installed at predetermined intervals, a housing has a partition plate for fixing cable connectors inside and a desired number of branch connectors on the outside surface. A rainproof connector is attached to one end of the housing, and a panel connector is attached to the other end of the housing, and a power line that can be airtightly inserted into the housing is connected to the branch connector for branching, The power line relay is characterized in that an insulating resin is injected into the housing, each connector and power line inside the housing is coated with the insulating resin, and the outside of the housing is covered with a resin foam. vessel.