JPS608494Y2 - Pole-mounted maintenance device for pole-mounted inspection equipment - Google Patents

Description

[Detailed description of the invention] The present invention relates to a pole-mounting device for a tester used when inspecting pole-mounted equipment installed on a pole, such as a sectional switch or a controller for controlling the switch. be.

Conventionally, for example, distribution lines have been equipped with sectional switches and switch controllers that automatically detect and disconnect faulty sections in the event of an accident on the line to keep the power outage section to a minimum. It is installed.

In order to ensure that these pole-mounted devices operate reliably and smoothly in the event of an accident or recovery, it is necessary to periodically inspect the control relays installed inside the devices.

During the inspection, we inspected the terminal block, which is connected via lead wires to the control relay in the pole-mounted equipment and the transformer that supplies low-voltage power for operating the relay, and installed on the pole in advance, and the terminal block installed on the pole on the ground. After connecting a tester that inspects the control relays inside the equipment with a cable, the tester was operated to check whether the equipment's control relays were working properly.

However, with this method, the tester is large and cannot be carried on the pole, and each time an inspection is performed, the terminal block on the pole must be connected to the tester on the ground, which is extremely time-consuming. This was extremely uneconomical as it required a worker on the top to operate the cables and a worker on the ground to operate the tester.

For this reason, recently, testers have been devised that use semiconductors such as ICs and transistors to make them small and lightweight so that they can be carried on poles, making it possible to inspect pole-mounted equipment on the poles. The method involves connecting the tester to a terminal block with a lead wire on a pole where live wires are not easily accessible, or tying and fixing the tester to an arm on the pole with a string before performing inspection work, which requires a considerable amount of work preparation. It is difficult to carry out the work quickly and efficiently, as it requires time and effort, and during the work, one must always be extremely careful to ensure that the tester does not become loose and fall to the ground. Ta.

The present invention eliminates the above-mentioned drawbacks and has a simple structure in which the pole-mounted inspection equipment is removably installed on the pole so that inspection work on the equipment can be carried out quickly and easily. To explain, 1 is a tester, and a tester main body (not shown) made of a semiconductor such as an IC is housed in a box 2 made of a thin metal plate. The switch 3 for operating the tester main body, the digital time display device 4, etc. are appropriately arranged, and the rear surface of the box 2 (
In the left direction 5 in FIG. 1, a suitable number of clamping type terminal fittings 5 to be connected to the tester body are horizontally protruded in two rows in the vertical direction.

6, a locking piece 7 is provided by bending both longitudinal ends of a horizontally long plate into an inverted shape, and further bending the tips of these bent pieces horizontally in directions facing each other, as shown in FIG. This fastener 6 has a fixed shaft 8 inserted between the bent pieces at both ends, and is attached to the rear side of the upper surface of the box 2.
The fixing shaft 8 is fixed by screws or the like with the fixing shaft 8 perpendicular to the front-rear direction of the box 2.

Reference numeral 9 denotes a fixing plate consisting of a horizontally long plate, on the tip of which a tightening bolt 11 with a wing nut 10 fixed in a non-removable manner is installed upright, and in the center part there is an I. Furthermore, the proximal end of the fixing plate 9 is folded back into a substantially rectangular shape toward the distal end of the fixing plate 9, as shown in FIG. (left and right direction in Figure 1)
The fixing plate 9 has a locking portion 12 with a space 12a along it, and by fitting the locking portion 12 to the fixing shaft 8 of the stopper 6, the fixing plate 9 can be used to insert the tightening bolt 11. With the distal end located on the rear side of the box 2, place the top of the box 2 on the hook part 1.
It is mounted so that it can move along the longitudinal direction (longitudinal direction) of the box 2 within the range of the space 12a of the box 2, and is received by the locking piece 7 of the stopper 6 so as not to rotate.

As a result, the fixing plate 9 moves in the longitudinal direction of the box 2 on the top surface of the box 2, but does not turn over. The time display device 4 of the tester 1 is caused by swinging and hitting the box 2, or by turning around and tightening bolts 11 and wing nuts 10.
will not cause any damage.

Reference numeral 13 denotes a terminal block made of an insulating material such as synthetic resin, and a receiving hole 14 for receiving the terminal fitting 5 of the tester 1 is bored in the front at a position corresponding to the fitting 5, and an opening of the receiving hole 14 is formed inside. A terminal 15 that is connected to the terminal fitting 5 by pressure is arranged facing the terminal 15, and a control relay (not shown) in the pole-mounted equipment and a transformer that supplies low-voltage power for operating the relay are arranged on the side. A through hole 16 for an electric wire connecting the two is bored.

After this terminal block 13 is housed in the terminal box 17 at its rear end and fixed to the terminal box 17 with fixing bolts 18, a pole support 19 such as an arm attached to a telephone pole is projected from the terminal box 17. The terminal box 17 is held in place by the fixing bolts 18 and brought into contact with the above-mentioned column support 19, and a patch plate 20 is fitted onto the tip of the fixing bolt 18 and pressed against the column support 19, and the fixing bolt 18 is tightened with a nut. 21, the terminal block 13 is firmly attached to the column support 19 via the terminal box 17.

22 is a fixing plate 9 provided on the tester 1 at the upper end of the butterfly box 17.
When the is moved to the terminal box 17 side using the space 12a of the hooking part 12, this locking plate is attached to the side of the fixing plate 9 so that it can overlap with the tip of the fixing plate 9. Locking plate 2
In the protruding portion of 2, a cutout groove 23 through which the tightening bolt 11 of the fixing plate 9 is inserted is perpendicular to the fixing shaft 8 of the stopper 6 toward the mounting position of the terminal block 13, as shown in FIG. It is drilled in the direction.

Reference numeral 24 denotes a lid body which is pivotally attached to the lower end of the terminal box 17 and covers the terminal box 17 so as to be able to be opened and closed, and a tightening bolt 11' having a wing nut 10' hinged thereon so that it cannot be removed is attached to the lower part of the lid body. The terminal block 13 is secured by flipping the lid 24 upward and placing it over the butterfly box 17, passing the tightening bolt 11' through the cutout groove 23 of the locking plate 22, and tightening the butterfly nut 10'. Cover it to prevent it from being exposed to the outside.

Reference numeral 25 denotes a bushing which is fitted into a hole opening at the lower part of the back surface of the terminal box 17 and allows a plurality of electric wires connecting the terminal block 13 and a pole-mounted device (not shown) to be inserted and supported in the terminal box 17 in a non-swingable manner. , 26 is a handle attached to the front of the tester 1.

When using the tester 1, climb the telephone pole with the tester 1, first loosen the wing nut 11' and release the lid 24 of the terminal box 17 from the locking plate 22, and then open the terminal box 17. 13 is exposed to the outside, and the tester 1 is inserted into the receiving hole 14 of this terminal block 13.
The tester 1 and the terminal block 13 are connected by inserting the terminal fitting 5 and compressing the terminal 15 by the fitting 5.

At this time, the fixing plate 9 provided on the tester 1 is mounted on the top surface of the case 2 with the hook part 12 fitted to the fixing shaft 8, as shown by the two-dot chain line in FIG. There is.

Next, lift the tightening bolt 11 of the fixing plate 9, move the fixing plate 9 to the lower side of the locking plate 22 using the space 12a of the hooking part 12, and then tighten the tightening bolt 11 to the second position. 2
As shown in the figure, when the wing nut 10 is tightened by inserting it into the cutout groove 23 of the locking plate 22, the tip of the fixing plate 9 overlaps the lower side of the locking plate 22 and is fixed. The tester 1 maintains a good connection with the terminal block 13) and the terminal box 17.
Fixedly supported.

After the tester 1 is fixed in this manner, various inspections are performed on the control relays in the pole mounted equipment using the tester 1.

The tester 1 is securely connected to the terminal block 13 by the fixing plate 9 during use.
Since it is connected to the pole, inspection work on the pole can be easily performed.

When the inspection work is completed, task 1 can be easily removed from the terminal block 13 by unfastening the fixing plate 9 and the locking plate 22 and removing the terminal fitting 5 of the tester 1 from the terminal 15 of the terminal block 13. .

Further, the terminal block 13 can be easily isolated from the outside by attaching the lid 24 to the terminal box 17, so that it can be completely protected from rainwater, dust, etc.

In addition, in this case, the center part of the fixing plate 9 is! Although the explanation has been given on a terminal box 17 that is bent into a shape, if the upper surface of the terminal box 17 is provided at almost the same height as the fixed shaft 8 of the stopper 6,
The fixing plate 9 does not need to be bent into an F-shape at its central portion, and the present invention can be achieved even if the fixing plate 9 is formed using a straight plate.

Also, in this case, instead of attaching the terminal block 13 to the pole support 19 via the terminal box 17, the terminal block 13 is directly attached to the pole support 19, and the locking plate 22 is attached to the upper end of this terminal block 13. It may be installed.

As mentioned above, the present invention includes a fastener with a fixed shaft attached to the top surface of a tester box, which is equipped with a terminal fitting on one side to be connected to the terminal of a terminal block attached to a pole support such as an arm. The fixing plate has a tightening bolt at its tip, the other end is folded back into a rectangular shape to create a space, and a hook is provided on the fixed shaft. Once fitted, place it on the box so that it can move within the range of the locking part, and insert the tightening bolt provided at the tip of the fixing plate into the notch of the locking plate attached to the top end of the terminal block. By inserting and tightening the tester into the groove and fixing the fixing plate and locking plate together, the tester can be removed and attached to the terminal block, making it possible to perform inspections on a pole as in the past. This is completely different from carrying out inspection work by tying the tester to a support arm or the like and using it in an unstable mounting condition.In this case, the tester is mounted on a pole using a terminal fitting installed on one side of the tester. The tester can be connected to the terminal block with one touch, and by simply moving the fixing plate attached to the tester to the terminal block side and firmly tightening the fixing plate to the locking plate using screws, the tester can be easily connected to neighboring trees, etc. Since it can be easily attached to a pole support, the tester can be quickly, easily and safely mounted on the pole, and therefore inspection work on the pole can be carried out easily and safely.

In addition, the fixing plate has a tightening bolt attached to the tip of one plate, and the other end is folded back toward the tip side to form a latching part with a horizontally long space, and this latching part can be attached to the tester box. By fitting the fixing shaft of the fastener provided on the body, the fixing plate can be easily moved along the longitudinal direction of the tester within the space of the catch, making it easy to connect the tester to the terminal block. When installing the tester, the fixing plate can be moved toward the front of the tester using the space in the locking part so as not to hit the locking plate provided on the terminal box, etc., making it easy to install the tester. After connecting the tester to the terminal block, simply move the fixing plate to the rear of the tester through the space in the locking part, insert the tightening bolt into the notch in the locking plate, and tighten it. Since the fixing plate can be easily fixed to the locking plate of the terminal box, the tester can be held in a good connection state without falling off the terminal block.

Furthermore, the fixing plate can be manufactured from a single plate with a simple structure and at low cost by simple sheet metal work.Moreover, the fixing plate has a fixing shaft that is inserted through the latching part and the fixing shaft is fixed to the stopper. This has many excellent practical effects, such as simplifying the installation process.

[Brief explanation of drawings]

FIG. 1 is a side view showing the device according to the present invention in use, FIG. 2 is a plan view, and FIG. 3 is a front view of the terminal block. 1... Tester, 2... Box, 5...
... Terminal fitting, 6... Fastening fitting, 9...
・Fixing plate, 12...Latching part, 13...
Terminal block, 15... terminal, 17... terminal box, 22... locking plate, 23... notch groove.

Claims (1)

[Scope of utility model registration request] A cutout groove 23 is formed at the upper end of the terminal block 13 attached to a pole support 19 such as a cross arm, toward the mounting position of the terminal block 13.
A locking plate 22 with a cutout is attached parallel to the terminal block 13, and a terminal fitting 5, which is detachably connected to the terminal 15 provided on the terminal block 13, is attached to one side of the case 2. , a stopper 6 with a fixing shaft 8 attached orthogonally to the cutout groove 23 of the above-mentioned locking plate 22 is fixed facing the locking plate 22, and the fixing shaft 8 of the stopper 6 has a fastener at its tip. Attached bolt 1
The fixing plate 9 is provided with a hooking part 12 by folding the other end of the plate having the fixing plate 1 planted therein into a rectangular shape to form a space 12a.
The tightening bolt 11 is positioned on the locking plate 22 side and loosely fitted by the locking part 12, and the fixing plate 9 is placed on the box 2 along the notch groove 23 in the space of the locking part 12. The fixing plate 9 is placed so that it can move within the range of the portion 12a, and the tip of the fixing plate 9 is overlapped with the lower side of the locking plate 22, and the tightening bolt 11 is inserted into the notch groove 23 and tightened. and a locking plate 22 are fixed together, and the tester 1 is integrally held on the terminal block 13 via the fixing plate 9.