JPH05199638A - Device for relaying electric cable to moving body - Google Patents

Abstract

PURPOSE:To provide a device which relays an electric cable for feeding power to a moving body such as a motor driven civil work machine while eliminating sag thereof. CONSTITUTION:A pair of turn tables 3A, 3B are mounted on a truck 1 and electric cable winding drums 4A, 4B, being driven through a hydraulic motor, are installed on the turn tables 3A, 3B. An electric cable 6A led out from a fixed electric facility is wound around one drum 4A whereas an electric cable 6B connected with the moving body is wound around the other drum 4B and then both cables 6A, 6B are connected electrically each other.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric cable relay device for connecting a power source from a fixed electric facility to a mobile body such as an electric civil engineering work machine.

[0002]

2. Description of the Related Art Conventionally, when supplying electricity from a fixed electrical equipment such as a power distribution equipment to a moving body such as a civil engineering work machine, an electric cable for movement is generally used, and the moving body moves along a fixed route. When doing so, it is common to dig a groove near the route and run a cable through it. On the other hand, there is no specific method for laying a cable from a fixed electrical equipment to a moving body that moves in any direction, a cable winding device is provided on the moving body itself, and a cable is drawn out according to the movement of the moving body. There are some that are designed to be wound up.

[0003]

However, it may be difficult to attach the cable winding device to the moving body itself due to the weight and size restrictions of the working machine which is the moving body. An unremovable cable will be dragged by the movement of a moving body, and it is easy for accidents such as excessive tension on the cable to break the wire or peeling of the outer skin due to rubbing due to friction with the ground to expose the live wire. There's a problem.

In order to avoid this, it is necessary for the operator to manually move the cable in accordance with the movement of the moving body, which forces the operator to always come into direct contact with the live cable, There was the problem of electrical dangers.

In view of such a conventional problem, the present invention allows the operator to pay out and wind the cable according to the movement of the moving body at a position closer to the movement range of the moving body without directly touching the cable. It is an object of the present invention to provide an electric cable relay device that can be used.

[0006]

SUMMARY OF THE INVENTION In order to solve the above-mentioned conventional problems and achieve the initial object, the gist of the present invention is to provide a pair of horizontally turntables on a carriage. The electric cable winding drum is installed on each of the two turntables, and the electric cables wound on the electric cable winding drums are electrically connected to each other via a rotary relay and an intermediate cable. There is an electric cable relay device for a moving body in which an electric cable leading to a fixed electric facility is wound on one side of an electric cable winding drum, and an electric cable leading to a moving body is wound on the other side and wound so as to be able to be drawn out.

[0007]

In the apparatus of the present invention, when the trolley is moved to a position close to the moving work range of the moving body, the cable on the fixed electric equipment side can be paid out or wound up according to the movement of the trolley. Also, the turntable rotates according to the direction of the electric cable from the fixed electric equipment, and the drum is oriented in the required direction.

On the other hand, when the moving body approaches or moves away from the carriage by moving in the work range, the electric cable on the moving body side can be paid out or wound up according to the distance. The turntable rotates according to the orientation of the and the drum is oriented in the desired direction.

Rotation of the drum for winding or unwinding each electric cable is carried out by human power or hydraulic power.

[0010]

Embodiments of the present invention will now be described with reference to the drawings.

In the figure, reference numeral 1 is a trolley provided with an axle 2. A pair of turntables 3 are arranged horizontally on the carriage 1.
A and 3B are installed, on which electric cable winding drums 4A and 4B are mounted, respectively.

On one drum 4A, an electric cable 6A connected to a fixed electric facility 5 (shown in FIG. 2) such as a power distribution facility.
Is wound up, and the other drum 4B is wound up with an electric cable 6B connected to a moving body 7 (shown in FIG. 2) such as an unmanned underwater working machine. Each drum 4A, 4B
Is driven to rotate by a hydraulic motor 8 as shown in FIG. 3, and this hydraulic motor 8 is driven by the drum 4 when the tension of the electric cable 6A (or 6B) falls below a certain level.
A (or 4B) is rotated in the winding direction, and conversely, when the tension exceeds a certain level, it is rotated in the unwinding direction. Especially, the electric cable 6B on the moving body 7 side is always pulled away from the ground. The tension is automatically adjusted so that the tension is maintained. This automatic adjustment of tension is
For example, the pressure generated in the hydraulic circuit of the hydraulic motor 8 is detected by a sensor.

The electric cable winding drums 4A and 4B are electrically connected by an intermediate cable 9, and although not shown in detail in the drawing, ring electrodes provided on the drum side and the bearing side, and Electric cables 6A, 6B wound on the respective drums through a relay device consisting of a brush sliding on the drum
And the intermediate cable 9 are electrically connected.

A power supply device 10 and a hydraulic device 11 for driving a hydraulic motor 8 are mounted in the carriage 1. In the figure, 12A and 12B are cable guides.

The above-described electric cable relay device for a moving body relays the electric cables 6A and 6B between the fixed electric equipment 5 and the moving body 7 as shown in FIG. 7 is moved to a position close to 7, so that the electric cable 6A can be moved according to the distance from the fixed electric equipment 5.
Is fed or wound up, and at the same time, the turntable 3A is rotated by the tension of the cable 6A, and the drum 4A is rotated.
Is oriented in the pulling direction.

On the other hand, the electric cable 6B between the moving body 7 and the carriage 1 is also automatically fed out or wound up according to the change in the distance between the moving body 7 and the carriage 1, and the turntable 3B is rotated by the tension at that time. Then, the drum 4B is oriented in the pulling direction.

In this way, when the moving body 7 moves according to the work while the carriage 1 is stopped at the desired position and the distance from the carriage 1 changes, the electric cable 6B is automatically paid out or wound. It is taken off and maintained in a tensioned state. Further, the drum 4B is swung according to the change in the pulling direction.

It should be noted that, as shown in FIG. 4, the power supply to the power supply device 10 is connected to the electric cable 6A via the intermediate cable 9A, and is connected to the electric cable 6B from the power supply device 10 via the intermediate cable 9B. You can The trolley 1 may be a traction drive type or a self-propelled type using an electric or hydraulic motor. Furthermore, each drum 4A, 4B
In addition to the hydraulic drive described above, an electric motor may be used, or a manual drive may be used.

[0019]

As described above, according to the present invention, the electric cable installed between the fixed electric equipment and the moving body is wound around the electric cable winding drum and fed out. By doing so,
The electric cable can be prevented from being dragged when the moving body is moved, and the worker can work away from the live electric cable, so that the safety is remarkably improved.

[Brief description of drawings]

FIG. 1 is a side view of an example of an electric cable relay device according to the present invention.

FIG. 2 is a plan view showing a usage state of the above.

FIG. 3 is a front view of the electric cable winding drum portion of the above.

FIG. 4 is a side view of another example of the electric cable relay device according to the present invention.

[Explanation of symbols]

 1 bogie 2 axles 3A, 3B turntable 4A, 4B electric cable winding drum 5 fixed electric equipment 6A, 6B electric cable 7 moving body 8 hydraulic motor 9, 9A, 9B intermediate cable 10 power supply device 11 hydraulic device 12A, 12B cable guide

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Jiro Otozu 134 Miyazaki, Noda, Chiba Prefecture Kanto District Construction Bureau, Ministry of Construction, Edogawa Construction Office (72) Inventor Biraku Harada 2-10-2 Otowa, Bunkyo-ku, Tokyo Foundation Law Institute Advanced Technology Center (72) Inventor Getaro Kajimura 2-8 Koraku, Bunkyo-ku, Tokyo Within Goyo Construction Co., Ltd. (72) Eiji Nakamaru 2-chome Koraku, Bunkyo-ku, Tokyo No. 8 Goyo Construction Co., Ltd. (72) Inventor Taizo Sano No. 2-8 Koraku 2-chome, Bunkyo-ku, Tokyo Within Goyo Construction Co., Ltd.

Claims (1)

[Claims] 1. A pair of horizontally rotatable turntables is mounted on a trolley, and electric cable winding drums are installed on both turntables, respectively. The cables are electrically connected via a rotary relay and an intermediate cable, and the electric cable leading to the fixed electrical equipment can be wound on one of the two electric cable winding drums, and the electric cable leading to the moving body can be wound on the other and fed out. An electric cable relay device for a moving body that is wrapped around a cable.