JPH022363B2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention provides that when performing utility pole-related work in close proximity to a set of extra-high-voltage electric wires, etc. installed and supported on utility poles, even if the extra-high-voltage wires remain live, it will affect the worker. The pole is moved and supported under conditions similar to those in which it is supported by a utility pole until it reaches a position where there is no damage, so that work on the utility pole can be completed within a safe area, and after the work is completed, the pole is erected and supported again in the same way as before it was moved. The aim is to provide a simple and safe device that can be used to restore safety.

There is no problem when it comes to replacing utility poles on which conventional high-voltage power lines are erected, or other pole-related work, if the work can be done with the current cut off, but in many cases, cutting off the current is harmful to electricity consumers, etc. Since it would have a huge impact, construction work related to utility poles should be carried out while the wires are still live, and normally extra-high voltage power lines are not
It carries a voltage of 22,000 to 33,000V, and workers who work close to live wires must work at a distance of at least 80 cm, and working closer can pose a risk of death due to electric shock. As it is,
This is truly a very difficult problem. Incidentally, patent publications such as Japanese Patent Publication No. 37-2683 and Utility Model Publication No. 10763/1973 have also been disclosed, but in both cases, the supporting member on which the live wire is to be moved is fixed to the utility pole itself, so it is difficult to move the live wire. It is only possible to float and support it slightly directly above, and it is only capable of receiving live wires. High-voltage wires of about 6,600V can be used (as they are not dangerous even if they are held and moved with rubber gloves), but as mentioned above, in the case of extra-high-voltage live wires of 22,000 to 33,000V, In order to obtain a working space, it is necessary to move not only directly upward but also horizontally, so the above-mentioned known devices that use tools fixed to utility poles cannot be used safely.

However, in the present invention, in a state where remote control is possible from the ground etc., the present inventors devised and applied
No. 56-69875 (public notice decided on April 28, 1999), as shown in the specification and drawings related to the utility model registration application, a support device that can be opened and closed was installed on the top of the insulator, and the way it was fixed to the utility pole was changed. By using a supporting member that is supported separately from the ground, extra-high-voltage electric wires can be easily removed from utility poles, and even extra-high-voltage electric wires consisting of three wires in a set can be removed from utility poles in their supported state. It can be removed from the pole and moved horizontally by 80 cm, and can be used to safely carry out work on utility poles without any electrical effects on the workers. It was successful in supporting live wires, and it was effective because it enabled utility pole workers to easily complete their work in an extremely safe manner, with no danger at all. It's really big.

To explain in detail with reference to the attached drawing which shows an example of the implementation, 1 is a groove-shaped electric wire support, which has an elastic cover piece 1a at its upper end, and is installed on a crane vehicle or the like so that it can be expanded and contracted and tilted freely. a supporting member 9, a rotating operation rod 8,
It is mounted and supported on the pole 7, arm mounting bracket 5, etc., and lifts and supports the electric wire from below by adjusting the supporting member.It opens due to the pressing force of the overhead wire and returns to its original state once the electric wire passes through. It is designed so that it automatically restores to the shape of a lid, and when removing electric wires, the lid can be opened by remote control so that there is no problem in removing the electric wires, and there is a roll 1b at the bottom of the groove of the support. , to support the electric wire so that it can slide smoothly against the electric wire. Reference numeral 2 is an insulator which is interposed to maintain a high degree of insulation from other parts to which the groove-shaped electric wire support is attached. Reference numeral 3 denotes a support that passes through the rectangular through hole 3a and firmly supports the insulator 2 on its upper surface. Reference numeral 4 denotes a rectangular arm having a rectangular shape that fits tightly into the square through hole 3a, and is made of an insulating material such as glass fiber reinforced plastic. The square arm 4 passes through the through hole 3a and is fitted with a tightening screw 3b.
It is fixed at an appropriate position on the square arm. Reference numeral 5 denotes an arm mounting bracket, which has a rectangular through hole 5a at the top suitable for tightly fitting the arm 4, and has a T-shaped leg portion 5 with respect to the rectangular hole 5a.
b, and a worm gear 6 is provided at the bottom of the leg portion 5b.
be fixed. Reference numeral 7 designates an insulating pole, the top of which fits and supports the lower part of the leg portion 5b so as to be able to pivot freely, and is equipped with a worm gear 6a to be meshed with the worm gear 6. Reference numeral 8 denotes a rotary operating rod which hangs directly below the shaft 6b of the worm gear 6a, and by linearly moving the rotary operating rod 8 in the front and back direction from the ground, etc., the worm gear 6a is rotated and meshed with the worm gear 6a. The worm gear 6 is provided with a horizontal movement, and the square arm 4 is provided so as to rotate horizontally depending on the state of the overhead wire. Reference numeral 9 denotes a support member such as the tip of a terminal boom installed on a crane vehicle or the like, and supports the pole 7 in a vertically movable manner via a hydraulic system or the like.

In implementing the present invention, the base end of the pole 7 can be directly or indirectly pivoted to a stationary part so that it can be raised and lowered.

The present invention has the above-mentioned configuration, and is supported on the end boom of a crane vehicle, etc., and has a height and inclination suitable for supporting a set of live wires from below, and supports each set of live wires. It is supported by a groove-shaped electric wire support device, and is released from the fixed state on the utility pole by remote control from below, and then moved to an appropriate horizontal position and held still by one-pressure operation of the crane truck. be. In this case, since the square arm 4 should be perpendicular to the live wire, the direction of the square arm 4 can be adjusted horizontally in any way by intervening the worm gears 6, 6a. Since the arm is not round but rectangular, it can be maintained in a normal position without any risk of rotation.

[Brief explanation of drawings]

The accompanying drawing shows an example of the present invention, and is a perspective view showing a state in which a set of live wires can be moved and supported. 1...Moving electric wire support, 2...Insulator, 3
...Support, 4...Square arm, 5...Arm mounting bracket, 6...Worm gear, 7...Pole, 8
...Rotary operation rod, 9...Support member for the crane vehicle.

Claims (1)

[Claims] 1. A pole that is independently supported from the utility pole so that it can be raised and lowered,
An arm is supported so as to be rotatable in a horizontal direction, and a support device that can be opened and closed is provided on the arm above the insulator;
A device for moving and supporting electric wires while they are still live, characterized by changing the way they are fixed to utility poles and installing a moving electric wire support that supports them separately from the ground. 2. The operating device installed on the crane truck so that it can be raised and lowered,
A mobile electric wire support that supports a pole that has an arm that can be rotated in the horizontal direction, and that arm is equipped with a support device that can be opened and closed on the top of the insulator, and that the way it is fixed to the utility pole is changed so that it is supported separately from the ground. A device for moving and supporting electric wires while they are live, characterized by having a tool attached. 3 At the upper end of a pole that is supported so that it can be raised and lowered, an arm mounting bracket that can be rotated in the horizontal direction is attached via a worm gear that can be driven by a rotary operating rod for remote control, and an insulator is attached to the arm. A support device that can be opened and closed is provided on the top of the electric wire, the way it is fixed to the utility pole is changed, and a mobile electric wire support device is attached to support the electric wire separately from the ground. Device. 4 Attach the arm horizontally to the pole supported so that it can be raised and lowered using an arm mounting bracket having a square mounting hole, pass the arm through the support having a square mounting hole, and tighten the tightening screw. The insulator was installed in a fixed position, and the insulator was formed into an upward groove through an insulator, and a roll was attached to the bottom of the groove.A support device that could be opened and closed was installed on the top of the insulator, and the way it was fixed to the utility pole was changed. 1. A device for movably supporting electric wires while they are live, characterized in that a movable electric wire support which is supported separately is fixed, and an elastic opening/closing lid piece is attached to the upper end of the electric wire support.