JPS642364Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a cylindrical cutout.

Conventionally, as shown in FIG. It is connected to the high-voltage distribution line) 5 and to the primary side of the transformer 9 via the lower part 7. Therefore, although there are differences in the various post mounting methods, all require a cross arm 3 for fixing the cutout and a support insulator 8 for supporting the draw wire 7.

Then, on the pillar, the high voltage line 5, the dedicated power line 5a, the electric light line 5b, etc. are supported by support insulators 8a, 8b fixed to the arms 3a, 3b, and stretched.
and other power distribution equipment is mounted on poles. As a result, conventional pillar installations have become complicated, require a large space for installation, and have problems such as being very complicated and difficult to work with.

The present invention was made in order to solve the above-mentioned conventional problems, and the main insulator is provided with a mounting bracket that can be directly attached to a utility pole in the approximate center thereof, and the upper end of the main insulator is provided with a mounting bracket that can be directly attached to the utility pole. By providing a clamp device that serves both the electrical connection with the electrode and the fixing of the bus bar to the utility pole, the installation of the pole can be simplified.
It is possible to reduce the equipment space, and
The purpose is to provide a cylindrical cutout that can reduce the number of supporting insulators.

An embodiment embodying the present invention will be described below with reference to FIGS. 2 to 4. Reference numeral 11 denotes a mounting member for fixing each of the upper and lower three cylindrical cut-out body insulators 12, each of which is attached to the outer periphery of a telephone pole 13. It consists of a pair of fixing fittings 15 which are in contact with each other and fixed at both ends with a pair of bolts 14, and a mounting arm 16 as a mounting fitting provided on one of the fixing fittings 15. As shown in FIG. 4, each of the mounting arms 16 extends in a bent manner so that its tip is located at a location that does not correspond to the utility pole 13. 17 connects the base end to each mounting arm 1
This is a tightening band having bolts 18 attached to the tips of the body insulators 6, and in particular tightens and fixes approximately the center portion of each body insulator 12 in the height direction, as shown in FIG.

The lower end of each main body insulator 12 is the telephone pole 13
It is mounted and supported obliquely so that it faces to the side.

Reference numerals 19 and 20 represent an upper electrode and a lower electrode provided at both upper and lower ends of each main body insulator 12, and 21 and 22 represent an upper contact and a lower contact, respectively. 23 is a fuse tube provided between both contacts 21 and 22 as a blocking section. 24 is a hook member at the lower end of the main insulator 12, and 25 is a sealing plug.

Reference numeral 26 denotes a clamp device fixed to the upper end of each main body insulator 12, and is a clamp device fixed to the upper end of each main body insulator 12.
electrically connected to. Reference numeral 27 denotes a fixed clamp member, which is fixed to the upper end of the main body insulator 12 in a crowned manner. Reference numeral 28 designates a locking groove recessed in the center of each fixed clamp member 27, and reference numeral 29 designates a pair of bolts protruding from the clamp member 27 on both sides thereof.

Reference numeral 30 denotes a movable clamp member attached to one bolt 29 so as to be rotatable laterally as shown in FIG. is formed. Reference numeral 32 denotes a clamping protrusion protruding from the central lower surface of each movable clamp member 30, and a clamping projection 32 is provided on the lower surface of the movable clamp member 30 so that the bus bar 33 can be clamped between the clamping groove 28 of the fixed clamp member 27. A groove 34 is formed.

Nuts 35 are screwed onto each pair of bolts 29, and both the fixed and movable clamp members 27, 3
The movable clamp member 30 is fixed to the clamp member 2 with the bus bar 33 clamped between the clamping grooves 28 and 34 of 0.
This is for pressing strongly towards the 7 side.

Reference numeral 36 denotes a draw wire led downward from the lower end of each main body insulator 12, and the base end of each is electrically connected to each lower electrode 20.

Reference numeral 37 denotes three lead bushings attached to the utility pole 13 via a support member below the bus bar 33 at the lowest end, and each of the lead bushings 37 is inserted through each of the lead wires 36 and connected to the transformer 38 below. guiding.

The cylindrical cutout configured as described above is provided with a clamp device 26 at its upper end, and the bus bar 33 is directly clamped by the clamp device 26, so that the insulator 10 for supporting the bus bar 5 in the conventional example and the The armrest 3 and the upper lead wire 4 are no longer necessary. Therefore, it is possible to simplify the mounting of the support insulator 8 on the pillars and to reduce the space for mounting the pillars.

Further, since the cutout of the above embodiment is directly fixed to the utility pole 13 by the mounting member 11 without using a cross arm, the space for mounting the pole can be reduced by the length of the cross arm.

Furthermore, in the above embodiment, the three upper and lower cutouts were installed diagonally on the pole with their lower ends facing the sides of the utility pole 13, so the fuses in these support insulators would melt and cause each main insulator 12 to Even if arc-extinguishing gas is ejected from the lower end, the ejected gas will not hit the utility pole 13, nor will it hit other cutouts, busbars 33, transformers 38, etc. located directly below.

Furthermore, if the cutout is provided so as to be shifted laterally from the utility pole 13 in this way, the operation rod will not get stuck on the utility pole 13 when the operation is performed from below, making the operation easier.

In addition, in order to prevent the gas ejected from the cutout located above from hitting the telephone pole 13 or the cutout below, the length of the arm 16 of each mounting member 11 is changed as shown in FIG. may be shifted laterally relative to each other.

Approximately in the center of the main insulator is a mounting bracket that can be directly attached to a utility pole, and the upper end of the main insulator serves both as an electrical connection to the upper electrode and for fixing the bus bar to the utility pole. By installing a clamping device to attach the support insulator to the utility pole, which conventionally supported and fixed the power distribution line to the utility pole, there is no need for the arms and upper lead wire of the cylindrical cutout to attach the support insulator to the utility pole. Therefore, there is no need to connect the upper lead wire to the distribution line, and it is possible to simplify and reduce the installation space by using a cylindrical cut-out pole, which is an excellent idea for industrial use. be.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing a cylindrical cutout mounted on a column, Fig. 2 is a perspective view showing a cylindrical cutout embodying the present invention in a column mounted state, and Fig. 3a is a cross section of the cylindrical cutout. FIG. 3b is an enlarged perspective view of the cut-out clamp device, FIG. 4 is a partially enlarged plan view of FIG. 2, and FIG. 5 is a front view showing another example of the present invention. It is a diagram. 12... Body insulator, 13... Utility pole, 19... Upper electrode, 20... Lower electrode, 26... Clamp device, 33... Bus bar, 36... Underline.

Claims (1)

[Scope of Claim for Utility Model Registration] 1. A cylindrical cut-out which is provided with an upper electrode and a lower electrode in both upper and lower ends inside the main insulator, and in which a cut-off part made of a fuse tube or the like can be attached to the upper and lower electrodes. , A mounting bracket that can be directly attached to the utility pole is provided approximately at the center of the body insulator, and a mounting bracket that can be directly attached to the utility pole is provided at the upper end of the body insulator, and electrical connection with the upper electrode and fixing of the bus bar to the utility pole are provided at the upper end of the body insulator. A cylindrical cutout characterized by being equipped with a clamping device that also serves as a cylindrical cutout. 2. The clamp device is supported by a fixed clamp member which is fixed to the outer upper end of the main body insulator, and a pair of bolts protruding from the fixed clamp member, and fixes the generatrix between the fixed clamp member and the fixed clamp member. The cylindrical cutout according to claim 1, characterized in that the cutout is constituted by a movable clamp member which is made wet.