JPS5959534A - Cable transportation truck - Google Patents

Abstract

PURPOSE:To load a cable twice as long as one in the conventional method on one truck by juxtaposing a liftable drum and a fixed drum both having the same diameter on the rear body of a truck and providing a freely retractable projections for winding up a cable on said liftable drum. CONSTITUTION:Two drums 2, 7 with the same diameter are juxtaposed on the rear body 5 of a track. Freely retractable projections 6 are provided on the both side edges of the drum 7, while a jack 8 for raising the drum 7 is mounted on the rear body 5. A motor 9 for driving both drums 2, 7 through belts 11 is also installed on the rear body 5. On operating the device, first, the drum 7 is raised and the projections 6 are extended, and a cable 10 is wound up around the drum 7 up to the amount to be wound by the drum 2. Then, the winding lengths of the both drums 2, 7 are equalized and the drum 7 is lowered while the projections 6 are retracted, and the truck is moved. And the cable 10 is again wound up around the drum 7 before being extended out into a vertical shaft 4.

Description

[Detailed Description of the Invention] Conventionally, as a method of laying power transmission lines in urban areas, conduit type, tunnel type, etc. have been adopted for laying underground power lines due to the availability of land and environmental considerations in accordance with road maintenance plans. ing. Furthermore, when laying underground power lines in urban areas, conventional cable carriers can be used! In this case, the diameter of the high-voltage cable 275,000 ports is 13 cm, and the building limit is stipulated as 4.5 m, so the diameter of the winding drum is limited to 3 to 3.5 m, and one cable Approximately 800 can be laid with
m. For this reason, the longest interval between shafts is also approximately 800 m.

However, in the future, the demand for electricity will tend to increase as urbanization and overcrowding become more pronounced, and large-capacity electricity will be required, and it is expected that high-voltage cables will use 500,000 to 1,000,000 volts. As a result, the diameter of the power transmission line has become 15 cm, and the conventional method of winding underground power lines using a ram is inefficient as it can only wind up about half the length of the cable. As the acquisition of land for construction has become more and more time-consuming, the problem is how to lay cables without making the distance between shafts shorter than before.

The present invention provides a cable carrier that solves the above-mentioned problems. Next, embodiments of the present invention will be described based on the drawings. A diameter of 3 to 3 mm is placed on the loading platform 1 of the vehicle body.
This figure shows a state in which only one 5 m fixed drum 2 is placed, the cable 3 is wound up, and then the cable 3 is suspended into a shaft 4 at the site.

Fig. 2 shows a vertically movable drum 7 and a fixed drum 2 of the same diameter placed front and back on a loading platform 5 of a 1ull car body, and a plurality of telescopic cable windings radially arranged on both side edges of the vertically movable drum 7. A mounting protrusion 6 is provided, and a jack 8 that is connected to the central axis of the drum 7 and can move the drum 7 up and down is installed on the loading platform 5, and the drum 7.2 is attached to the belt 1.
A motor 9 driven via 1 is installed in the center. First, the vertically movable drum 7 is raised by operating the jack 8, the protrusion 6 is extended to make the diameter larger, and the cable 10 is wound up by driving the motor 9 via the belt 11 until it reaches the length of the fixed drum 2. Next, the end portion A of the cable 10 of the drum 7 is wound onto the fixed tram 2, and the motor 9 is driven to make the winding length on the drums 7 and 2 equal to each other. The jack 8 is operated to lower the vertically movable drum 7 and return it to the same height as the fixed drum 2. In this state, the height is within the limit during transportation, and the general vehicle can be moved to the predetermined shaft 4. Next, the vertically movable drum 7 is again jacked 8.
After raising the fixed drum 2 by extending the protrusion 6 and winding the cable 10 of the fixed drum 2 around the vertically movable drum 7, insert the end θ111 part A of the cable 10 into the shaft 4 and perform the lifting operation. Bye.

As mentioned above, according to this invention, a cable that is twice the length of a conventional cable can be loaded onto one IM vehicle.
When using cables for 75,000 volts, it is possible to extend shafts at twice the spacing of conventional shafts, and when using cables for 500,000 volts, cable joints are required at the spacing between conventional shafts. It is possible to install it without having to do so.

[Brief explanation of the drawing]

FIG. 1 is a schematic side view of a conventional cable transport vehicle. FIG. 2 is a schematic side view of a cable transport IB vehicle according to the present invention. 1.5: Transport vehicle loading platform 2: Fixed drum 3, io, to: Cable 4: Shaft 6: Cable winding protrusion 7: Vertically movable drum 8: Jacket 9: Motor 11: Drive belt A: Cable tip

Claims (1)

[Claims] A cable transport system in which a vertically movable drum and a fixed drum of the same diameter are juxtaposed front and back on the loading platform of the body of a transport vehicle, and a plurality of telescopic cable winding protrusions are provided radially on both side edges of the vertically movable drum. car