JPH03203198A - Lightning arrestor - Google Patents

Abstract

PURPOSE:To install a lightning rod fixed by engaging and inserting a lower stage expansion lever in a containing lever, engaging and inserting an upper expansion lever having a needle at the forward end in the lower expansion level, and forming then to expand/contract freely through a wire rope. CONSTITUTION:When a wire rope W is wound around a wire reel 61 of an elevater 60, the rope W between a forward end Wa of the rope W and a guide roller R6 becomes shorter, and an upper expansion lever 40 moves up to be elongated. The rope W between a guide roller R4 installed at a lower expansion lever 30 and a guide roller R3 installed at a containing lever 20 also becomes shorter, and the lower expansion lever 30 is elongated. Elongation of the expansion levers 40, 30 is stopped by stoppers 41, 31. In the meanwhile, when winding the rope W by the elevater 60 is stopped, the expansion levers 30, 40 move down by their own weight to be contained in the containing lever 20. A lead 71 connected between a needle 50 and a grounding rod 80 is released and wound by a constant load spring mechanism of a lead winding machine 70 corresponding to above elongation and contraction.

Description

[Detailed description of the invention] <Industrial application field> BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lightning arrester that is extendable and retractable.

<Prior Art> Lightning rods are generally installed on the roofs of buildings and the tops of steel towers to prevent fires and damage to equipment caused by lightning strikes.

Moreover, the longer the lightning rod is, that is, the higher it is, the wider the range of protection from lightning strikes.

<Problem to be solved by the invention> Is installing lightning rods at high places as described above an effective means to prevent disasters caused by lightning strikes?It is not necessarily possible to install lightning rods at high places in all places.

For example, golf courses are generally built in mountainous areas, so they are often struck by lightning. For this reason, evacuation huts are set up at designated locations, and lightning rods are attached to the roofs of these huts to protect the players. However, in order to reliably protect players from the danger of lightning strikes, in other words, to protect players over a wide area, it is necessary to install lightning rods at higher positions. However, installing tall steel towers and installing lightning rods will impede play and also spoil the scenery of the golf course.

- In places where there are no tall buildings or steel towers nearby, such as event plazas or loading docks at ports, there is a high risk that temporary tents and luggage will be struck by lightning. However, if a fixed lightning rod is installed,
This will hinder the operation of events and the movement of transport vehicles. Furthermore, special locations such as outdoor electromagnetic wave measurement sites are often located on hilly areas in order to distinguish between external electromagnetic waves and noise from the equipment under test, and therefore there is a high risk of lightning strikes.

However, there must be no metal protrusions on the top of the flat metal clamp brain on which the test machine is mounted. Therefore, it is not possible to permanently install lightning rods.

As a result, protection against lightning strikes for expensive measuring instruments, test machines, measuring personnel, etc. cannot be said to be complete.

<Means for Solving the Problems> The present invention was developed to solve each of the above-mentioned problems, and includes a lower telescopic rod inserted into a storage rod erected on a foundation, and a needle attached to the tip. This is a lightning arrester in which the upper stage telescopic rod is inserted into the lower stage telescopic rod to form the -1 stage telescopic rod and the lower stage telescopic rod so that they can be expanded and contracted. A wire rope is wound around a kite roller attached to the lower part, and its tip is fixed to the do part of the upper telescoping rod via the kite roller attached to the -L part of the lower telescoping rod, and this wire rope is operated manually or electrically. a wire winding machine that releases and winds up the conductor connecting the needle and the ground rod in response to the extension and contraction of the upper telescopic rod and the lower telescopic rod; It has been established.

According to the lightning arrester of the present invention, when the wire rope is wound up by the winding operation of the elevator, the L-stage telescopic rod and the lower-stage telescopic rod each extend in one direction, and the wire rope is rolled up by the winding operation of the elevator. Place it above the attached needle. Furthermore, when the wire rope is unwound by the elevator, the upper telescopic rod and the lower telescopic rod are respectively reduced in size and stored in the storage chamber, and the needle is placed near the ground.

Therefore, normally, the upper telescopic rod and the lower telescopic rod are stored in respective storage rods, and by operating the elevator just before a lightning strike and placing the needle upward, it is possible to avoid disasters caused by lightning strikes.

<Example> Next, the lightning arrester of the present invention will be explained in detail.

FIG. 1 is a schematic sectional view illustrating the lightning arrester l in an extended state, and FIG. 2 is a schematic sectional view illustrating the lightning arrester l in a contracted state.

This lightning arrester l includes a storage rod 20 erected on a foundation 10 via a base plate 11 and anchor holes 1 to 12.
, a lower telescopic rod 3° fitted into the storage rod 20, an upper telescopic rod 40 fitted into the lower telescopic rod 30, a needle 50 attached to the tip of the upper telescopic rod 40, and a wire rope. The lower telescopic rod 3o and the upper telescopic rod 40 are made independent in extension and contraction through W.) The conductive wire 71 connected to the descending rod 60, the protrusion needle 50, and the grounding rod 80 buried underground is wound up. The main structure is a releasable conductor winding Jj&70.

The lower telescopic rod 30 is fitted into the storage rod 2), and -1-
As a result of the stage telescopic rod 40 being fitted into the lower stage telescopic rod 30,
During contraction, both telescopic rods 30 and 40 are stored within the storage rod 20.

Further, an elevating rod 41160 is attached to the storage rod 20, and the wire rope W from the 11 lowering device 60 extends the lower telescopic rod 30 and the upper telescopic rod 40 via guide rollers R (R, to R6), respectively.

FIG. 3 is an enlarged view of the X section in FIG. 1, and FIG. 4 is an enlarged view of the Y section. That is, the wire rope W whose rear end Wa is connected to the wire reel 6I of the elevator 60 is wound around the guide rollers R2, R3, and R:+ attached to the upper part of the storage rod 20 via the guide roller R1, and is expanded and contracted at the lower stage. The guide roller R attached to the -L section of the lower telescopic rod 30 via the guide roller R4 attached to the lower part of the rod 30,
,, R6, and its tip wb is fixed to the lower part of the upper telescopic rod 40.

Such wire rope W is the wire reel 61 of the elevator 60.
When the wire rope W is wound up, the wire rope W between the tip Wa of the wire rope W and the guide roller R6 becomes shorter, and the upper stage telescopic rod 40 rises by -L, that is, expands accordingly. Similarly, the wire rope W between the guide roller R4 attached to the lower telescopic rod 30 and the guide roller R3 attached to the storage rod 20 is shortened, and the lower telescopic rod 30 is accordingly lengthened. The extension of both telescopic rods is accompanied by stoppers 41, 3].

On the other hand, when the winding of the wire rope by the elevator 60 is released, the lower telescopic rod 30 and the upper telescopic rod 40 are lowered by their own weight and are stored in the storage rod 20 as described above. Also, a conductor 7 connected between the prong needle 5 () and the grounding rod 80
1 is a conductor winding machine 7 corresponding to the above-mentioned expansion and contraction.
It is released and wound up by a constant force spring mechanism of 0.

Figure 5 shows J with a structure for winding wire rope W manually.
4 is a partially cutaway view showing a fourth disembarkation 60. FIG.

This elevator 60 is attached to the storage rod 20 by a fixed hunt 21. Further, the internal wire reel 61 is rotatably provided by a rotating shaft 63 supported by a flaket 62. One cap gear 84a is attached to the rotating shaft 63 of this wire reel 61, and meshes with another cap gear 64b in a substantially orthogonal state. They mesh together to form a so-called deceleration plow 4 (mechanism).

A crank-shaped handle 65 is attached to rotate the shade wheel 64c.

Therefore, when the handles 65 are rotated to a predetermined direction, each of the cap gears 64a, 64b, and 64c is rotated to the wire reel 61.
rotate at a predetermined speed. This rotation causes the wire rope W to be wound up.

Further, FIG. 6 shows an elevator 60 that rotates a wire reel 61 electrically. In other words, it is an electric winch-based elevating mechanism. Inside the elevator 60, a motor 66 is provided in place of the handle 65. By directly turning on and off the power supply connected to the motor 66, it is possible to perform the winding operation electrically.

Further, by using the electric elevator 60, it is possible to predict a lightning strike and automatically perform the winding operation. 7th
The figure shows an automatic extension (winding) control circuit. In this control circuit, there is a lightning sensor (surge sensor) 91, a rain sensor 92, and other signals 93, such as a lightning strike condition. Under certain conditions (during experiments that may affect measurements), a signal to suspend the extension of the telescopic rod may be sent to the control panel 9.
0 and outputs the driving flow from the power source 95 to the motor 66 via the power panel 94. Therefore, the motor 66, that is, the elevator 60 receives signals from the lightning sensor 91 and the rain sensor 92,
Furthermore, the wire rope W is automatically wound up in response to another information signal 93. This makes it possible to operate lightning arresters unmanned.

As the power source 95, a commercial power source, a normal battery, a battery such as a solar battery, a generator, or the like is used.

Lifting and lowering 41 manually or electrically (automatically) as described above.
When the lower telescopic rod 30 and the upper telescopic rod 40 are expanded or contracted, the wire winding machine 70 releases and winds up the conductive wire 71 in response to the expansion or contraction.

1-, the end of the conductive wire 71 wound as shown is connected to a grounding rod 80 pushed underground (first F'36
), so the surge caused by a lightning strike is grounded.

FIG. 8 is a diagram illustrating the wire winding machine 70. This winding machine 70 winds up or releases a conducting wire 71 inserted into the machine using a conducting wire reel 73.

The conducting wire reel 73 is urged in a direction to wind up the hitachi conducting wire 71 by the restoring force of the constant load spring 74. Therefore, as described above, when the lower telescopic rod 30 and the upper telescopic rod 40 are extended, the conductive wire 71 connected to the needle 50 becomes a constant force spring 74.
It is released from the conductor runner 73 against the restoring force of the wire. That is, the conducting wire 7I is automatically let out from the conducting wire reel 73 in response to the extension of each telescopic rod 30, 40.

On the other hand, when the lower stage telescopic rod 30 and the upper stage telescopic rod 40 are contracted, the conductor reel 73 rotates due to the restoring force of the constant load spring 74, and the 4 wires 71 rolled as described above are rotated.
Or 1 is given and wound up.

0 In order to wind the conducting wire 71 evenly during this winding, a level wine turf 5 is provided on the conducting wire reel 73, and the conducting wire 71 is wound uniformly in the width direction within the conducting wire reel 73. Also, between the conductor winding machine 70 and the needle 50, conductor protection tubes 72 and 73 for protecting the conductor 71 are installed. The conductor protection tube 72 is made of hard vinyl, and the conductor protection tube 73 is a flexible tube made of plastic and can be expanded and contracted.

The lower end of the conductor protection tube 73 is fixed within the conductor protection tube 72, and the upper end is fixed to a single portion of the lower telescopic rod 30.

The lightning arrester 1 described above may be of a type that is grounded on the ground, or the lightning arrester 1 may be installed in a basement and extended to the ground if necessary.

FIG. 9 is a schematic cross-sectional view of the lightning arrester l installed in a basement 100 constructed underground. That is, a concrete basement 100 is created underground. This basement 100 is slightly higher in height than the lightning arrester 1 in its reduced state, and is spacious enough to take maintenance into account. The lid 1o1°102 is attached. An elongated hole 103 is formed approximately at the center of both heavy-duty lids. A drip-proof cover 104 is attached to the top of the elongated hole 103.

The lightning arrester l installed in such a state is extended manually or electrically (automatically) as described above, and as shown in FIG. The lower telescopic rods 30 each protrude from the elongated holes 103 to the ground. At this time, the drip-proof cover 104 is in close contact with the periphery of the lower telescopic rod 30 to prevent dirt and rainwater from entering the basement 100 from outside.

Then, as mentioned above, when it is contracted manually or electrically (automatically), the lower telescopic rod 30. Upper telescopic rod 40. The needles are reduced in size by 5 degrees and stored in the underground installation room 100 as shown in FIG. In addition, when periodically inspecting or maintaining the lightning arrester l, the heavy-duty lids 101 and 102 may be opened as shown in FIG. 11, and entry may be made through the inspection ramp 105 provided on the inner wall of the basement 100. Furthermore, a train 106 is provided on the floor of the basement 100 to drain rainwater etc. that have entered the room to the outside.

As described above, since the lightning arrester l of the present invention is formed with an extension/reduction opening 1 2 , it can be operated manually or electrically (automatically) only during lightning strikes.
This makes it possible to extend it to prevent lightning strikes.

<Effects of the Invention> As mentioned above, the lightning arrester of the present invention is formed so that it can be expanded and contracted, so if it is kept in a contracted state above ground or underground, it will not interfere with play on a golf course or the like. Also, it does not spoil the surrounding scenery. Furthermore, even in places where there are no tall buildings or steel towers nearby, such as event plazas or loading docks at ports, by installing it in a basement, there will be no obstruction to the operation of the event or the transportation of loaded items. Moreover, it becomes possible to protect spectators, workers, and even conveyed objects from lightning strikes as appropriate.

Furthermore, even in special locations such as outdoor electromagnetic wave measurement sites, the lightning arrester can be contracted during measurement work and expanded only in the event of a lightning strike. By elongating it appropriately at times, damage to expensive measuring instruments and test materials can be prevented, and the safety of the person being measured can also be ensured.

[Brief explanation of drawings]

1 is a schematic cross-sectional view illustrating the lightning arrester in an extended state; FIG. 2 is a schematic cross-sectional view illustrating the lightning arrester in a contracted state; FIG. 3 is an enlarged view of the X section in FIG. 1; The figure is the same Y
Figure 5 is an enlarged view of the part, and Figure 6 is a cutaway view of the elevator.
Partially cutaway diagram to explain other elevators, Figure 7 is a control circuit diagram for electric and automatic operation of the elevator, Figure 8 is a schematic diagram to explain the wire hoist, and Figure 89 is a diagram showing the inside of the basement. Figures showing the installed lightning arrester; Figure 1O is a top view of the basement; Figure 11 is a diagram showing the expanded state inside the basement. l...Lightning arrester, 10...Foundation, 20...Storage rod. 3 4 30... Lower stage telescopic rod, 40... Upper stage telescopic rod. 50... needle, 60... elevator. 70...Conductor winding machine, 71...Conductor wire. 100...basement, W...wire rope. R (R, ~R6)... Kiterolla.

Claims (1)

[Scope of Claims] A lower telescopic rod is inserted into a storage rod erected on a foundation, and an upper telescopic rod with a protrusion attached to the tip is inserted into the lower telescopic rod to separate the upper and lower telescopic rods. A lightning arrester formed to be expandable and contractible, the lightning arrester being wound around a guide roller attached to a lower part of a lower telescopic rod via a guide roller attached to the storage rod, and a guide roller attached to an upper part of the lower telescopic rod. A wire rope whose tip is fixed to the lower part of the upper telescopic rod via a wire rope, an elevator that can wind up and unwind the wire rope manually or electrically, and connect the protrusion needle to a ground rod buried underground. 1. A lightning arrester comprising: a conductor winding machine that releases and winds up the conductor wire in response to the expansion and contraction of the upper telescopic rod and the lower telescopic rod.