JPH0119524Y2 - - Google Patents

Description

【考案の詳細な説明】 〔考案の属する技術分野〕 本考案は配電盤の点検時等に安全のため主回路
を接地する台車形接地装置の鎖錠装置に関する。[Detailed description of the invention] [Technical field to which the invention pertains] The present invention relates to a locking device for a trolley-type grounding device that grounds the main circuit for safety when inspecting a switchboard.

台車形接地装置は台車の引出し中および引入れ
操作中に接地開閉器を開に保つて接地操作ができ
ないようにし、台車を引入れてはじめ接地開閉器
の操作が可能となり、接地開閉器を開にしなけれ
ば台車が引出せないようにする鎖錠装置を設ける
のが普通であるが、鎖錠装置はできるだけ構造簡
易な機械的鎖錠装置であることがのぞましい。 The trolley-type grounding device keeps the grounding switch open during the pull-out and pull-in operations of the trolley to prevent grounding operations, and only when the trolley is pulled in can the earthing switch be operated, and the earthing switch is opened. It is normal to provide a locking device that prevents the cart from being pulled out unless the locking device is pulled out, but it is preferable that the locking device is a mechanical locking device that is as simple in structure as possible.

〔従来技術とその問題点〕[Prior art and its problems]

第１図は従来の鎖錠装置を有する台車形接地装
置の正面図、第２図は側面図である。これらの図
において１は引出形台車、２は台車に碍子３、導
体バー４を介して取付けられ、図示しない配電盤
の遮断器接続口に挿入される可動接触子であり、
上下の遮断接続口を選択して取付位置が変えられ
るようになつている。５は台車引入れ操作軸でね
じ棒となつており、ハンドル６で回動され、図示
しない盤側に設けたねじ穴に螺合し、ハンドル回
動につれて台車を引入れ引出すようになつてい
る。７は接地開閉器であり、その操作軸７１をハ
ンドル８で回動することにより、クランク７２を
介して開閉軸７３を回動し、開閉軸に固着された
ブレード７４を導体バー４に接続された固定接触
子７５に対して開閉操作するようになつている。
７６は投入ばねである。開閉軸７３は図示しない
電線によつて台車下部に設けた接地用接触子９に
接続されており、接地接触子９は台車を引入れる
につれて盤側に設けた接地母線１０に接続される
ようになつている。１１は台車引入れ操作軸５と
接地開閉器操作軸７１との間にかけ渡される鎖錠
棒である。 FIG. 1 is a front view of a trolley type grounding device having a conventional locking device, and FIG. 2 is a side view. In these figures, 1 is a pull-out type truck, 2 is a movable contact that is attached to the truck via an insulator 3 and a conductor bar 4, and is inserted into a circuit breaker connection port of a switchboard (not shown).
The mounting position can be changed by selecting the upper and lower cut-off connection ports. Reference numeral 5 denotes a trolley pull-in operation shaft, which is a threaded rod, which is rotated by a handle 6 and screwed into a screw hole provided on the panel side (not shown), so that as the handle is rotated, the trolley is pulled in and pulled out. . Reference numeral 7 denotes a grounding switch, and by rotating its operation shaft 71 with a handle 8, an opening/closing shaft 73 is rotated via a crank 72, and a blade 74 fixed to the opening/closing shaft is connected to the conductor bar 4. The fixed contact 75 is opened and closed.
76 is a closing spring. The opening/closing shaft 73 is connected by an electric wire (not shown) to a ground contact 9 provided at the bottom of the truck, and as the truck is pulled in, the ground contact 9 is connected to a ground bus 10 provided on the panel side. It's summery. Reference numeral 11 denotes a locking rod that is stretched between the trolley pull-in operating shaft 5 and the earthing switch operating shaft 71.

第３図は鎖錠棒の詳細を示すもので、第３図Ａ
は接地開閉器操作時の正面図、第３図Ｂは台車引
入れ操作時の正面図である。台車引入れ操作軸５
および接地開閉器操作軸７１にはそれぞれカム板
５１および７７が取付けられている。カム板５１
は台車を引入れた位置で凹み５１ａが真上に、ま
たカム板７７は接地開閉器を開とした時に凹み７
７ａが真下にくるように凹みが設けられている。
鎖錠棒１１の両端は二又に分れ、これら二又部の
基端部にロツキングピン１１１ａ，１１１ｂが設
けられている。そして二又部でそれぞれカム板５
１および７７を挟みこんで両カム間にかけ渡さ
れ、一端のロツクピンが一方のカム板の凹みには
まり込んだ時、他端のロツクピンが他方のカム板
の外周に接して移動するように鎖錠棒の長さが決
められている。１２は鎖錠棒１１を長穴１１２を
介して台車の固定部に固定する固定ねじである。
第３図Ａに示すごとく台車を引入れると鎖錠棒１
１が下がりロツクピン１１１ｂがカム板５１の凹
み５１ａにはまり込むので台車引出操作軸がロツ
クされ接地開閉器の操作が可能となる。また第３
図Ｂに示すごとく接地開閉器の開位置において鎖
錠棒１１を引上げると接地開閉器操作軸がロツク
され、台車の引入れ引出し操作が可能となる。 Figure 3 shows the details of the locking rod, and Figure 3A
is a front view when the earthing switch is operated, and FIG. 3B is a front view when the trolley is pulled in. Carriage pull-in operation shaft 5
Cam plates 51 and 77 are attached to the earthing switch operating shaft 71, respectively. Cam plate 51
The recess 51a is directly above when the trolley is pulled in, and the recess 7 is on the cam plate 77 when the earthing switch is opened.
A recess is provided so that 7a is directly below.
Both ends of the locking rod 11 are bifurcated, and locking pins 111a and 111b are provided at the base ends of these forked portions. And each cam plate 5 at the forked part
1 and 77 are sandwiched between both cams, and when the lock pin at one end fits into the recess in one cam plate, the lock pin at the other end moves in contact with the outer periphery of the other cam plate. The length of the rod is determined. Reference numeral 12 denotes a fixing screw for fixing the locking rod 11 to a fixed part of the truck through an elongated hole 112.
When the trolley is pulled in as shown in Figure 3A, the locking rod 1
1 is lowered and the lock pin 111b is fitted into the recess 51a of the cam plate 51, so that the trolley pull-out operation shaft is locked and the earthing switch can be operated. Also the third
As shown in Figure B, when the locking rod 11 is pulled up when the earthing switch is in the open position, the earthing switch operating shaft is locked and the trolley can be pulled in or pulled out.

前記鎖錠装置は台車の引入れ操作軸および接地
開閉器操作軸を直接ロツクするようにしたもので
あるから、強度的に丈夫にしなければならず、ま
た寸法精度が要求され、調整に手間がかかるとい
つた欠点があつた。 Since the locking device is designed to directly lock the pull-in operating shaft of the trolley and the grounding switch operating shaft, it must be strong and durable, and dimensional accuracy is required, making adjustment difficult. It had some drawbacks.

〔考案の目的〕[Purpose of invention]

本考案は前記の欠点を除去し、構造簡易、組み
立て容易で調整に手間のかからない台車形接地装
置の鎖錠装置を提供することを目的とする。 SUMMARY OF THE INVENTION The object of the present invention is to eliminate the above-mentioned drawbacks and provide a locking device for a trolley type grounding device that has a simple structure, is easy to assemble, and requires no effort to adjust.

〔考案の要点〕[Key points of the idea]

上記目的は、本考案によれば、接地開閉器を搭
載した引出形台車に取付けた可動接触子を配電盤
の遮断器接続口に挿入して母線または負荷ケーブ
ルを接地するようにした台車形接地装置におい
て、次の如く構成したことにより達成される。す
なわち、台車前面板に、台車引入れ操作軸および
接地開閉器操作軸のハンドル挿入孔を上下方向並
びに左右方向に関して互いにずらして配置し、台
車前面板後方側で各ハンドル挿入孔をそれぞれ覆
い台車前面板前方からの摺動操作により該当ハン
ドル挿入孔の開放するシヤツター板を設け、両シ
ヤツター板は、該当ハンドル挿入孔開放のための
摺動操作時に相手側シヤツター板の摺動を直接に
妨げるところに位置するように同一平面内におい
て一方が上下方向に他方が左右方向に摺動可能と
なしたことである。 According to the present invention, the above object is a trolley-type grounding device in which a movable contact mounted on a pull-out trolley equipped with an earthing switch is inserted into a circuit breaker connection port of a switchboard to ground a bus bar or load cable. This is achieved by the following configuration. That is, the handle insertion holes of the trolley pull-in operating shaft and the grounding switch operating shaft are arranged on the front panel of the trolley so as to be offset from each other in the vertical and horizontal directions, and each handle insertion hole is covered on the rear side of the front panel of the trolley. A shutter plate is provided that opens the corresponding handle insertion hole by sliding operation from the front of the face plate, and both shutter plates are placed in a place that directly impedes the sliding of the other shutter plate during the sliding operation to open the corresponding handle insertion hole. One can be slid in the vertical direction and the other can be slid in the horizontal direction within the same plane so that the two can be positioned in the same plane.

〔考案の実施例〕[Example of idea]

第４図は本考案の実施例の鎖錠装置を有する台
車形接地装置の正面図、第５図は側面図で第１図
および第２図と同一符号で示すものは同一部品で
ある。接地開閉器７はその開閉軸７３に固着した
突起レバー７８に操作ハンドル１３を引掛けて回
動操作することにより開閉されるようになつてい
る。台車１の正面板の内側に台車引入操作軸５の
ハンドル６の挿入孔を覆うシヤツタ板１４と接地
開閉器操作ハンドル１３の挿入孔を覆うシヤツタ
板１５とが、シヤツタ板１４は上下に、シヤツタ
板１５は左右に摺動可能に取付けられている。 FIG. 4 is a front view of a trolley type grounding device having a locking device according to an embodiment of the present invention, and FIG. 5 is a side view, in which the same parts are denoted by the same reference numerals as in FIGS. 1 and 2. The earthing switch 7 is opened and closed by hooking the operating handle 13 onto a protruding lever 78 fixed to the opening/closing shaft 73 and rotating the operating handle 13. A shutter plate 14 that covers the insertion hole for the handle 6 of the truck pull-in operation shaft 5 and a shutter plate 15 that covers the insertion hole for the earthing switch operation handle 13 are provided on the inside of the front plate of the truck 1. The plate 15 is attached so as to be slidable left and right.

第６図はこれらのシヤツタ板の拡大斜視図であ
る。シヤツタ板１４を台車前面に突出させたノブ
１４１を持つて上に上げると引入れ操作軸５へハ
ンドル６を挿入して台車の引入れ引出し操作が可
能となるが、その際シヤツタ１４に横移動を阻止
されるので接地開閉器の操作は不可能となる。ま
たシヤツタ板１４を下げた位置でシヤツタ板１５
をノブ１５１を持つて横移動させると接地開閉器
操作ハンドルを突起レバー７８に引掛けて接地開
閉器の開閉操作が可能となるが、その際シヤツタ
板１４が上げられないので台車の引入れ引出し操
作は不可能となる。なお接地開閉器７の開閉軸７
３に設けた突起レバー７９に２本の鎖錠アーム１
６が回動自在に取付けられ、鎖錠アーム１６の先
端がシヤツタ板１４の側壁に垂直に設けた長穴１
４２に係合させられている。開閉軸７３は矢印方
向に回動すると接地開閉器が閉になるようにして
いる。開閉軸７３を矢印方向に回動すると鎖錠ア
ーム１６の先端は長穴１４１の下端部まで押し下
げられ、この位置すなわち接地開閉器を閉にした
位置ではシヤツタ板１４を引上げることができ
ず、台車の引入れ引出し操作を不可能とするが、
接地開閉器の開位置では鎖錠アーム１６の先端が
上に上がつているのでシヤツタ板１４を押し上げ
て台車の引入れ引出し操作が可能となるようにし
ている。 FIG. 6 is an enlarged perspective view of these shutter plates. When the shutter plate 14 is lifted up by the knob 141 protruding from the front of the truck, the handle 6 is inserted into the pull-in operation shaft 5 and the truck can be pulled in or pulled out, but at this time the shutter 14 is moved laterally. The earthing switch will not be able to be operated. Also, when the shutter plate 14 is lowered, the shutter plate 15
If you hold the knob 151 and move it laterally, you can hook the grounding switch operating handle to the protruding lever 78 and open/close the grounding switch, but at this time, the shutter plate 14 cannot be raised, so the trolley cannot be pulled in or pulled out. Operation becomes impossible. In addition, the opening/closing shaft 7 of the earthing switch 7
The two locking arms 1 are attached to the protruding lever 79 provided in the
6 is rotatably attached, and the tip of the locking arm 16 is perpendicular to the side wall of the shutter plate 14 through the elongated hole 1.
42. When the opening/closing shaft 73 is rotated in the direction of the arrow, the earthing switch is closed. When the opening/closing shaft 73 is rotated in the direction of the arrow, the tip of the locking arm 16 is pushed down to the lower end of the elongated hole 141, and in this position, that is, the position where the earthing switch is closed, the shutter plate 14 cannot be pulled up. Although it is impossible to pull in or pull out the trolley,
In the open position of the earthing switch, the tip of the locking arm 16 is raised upward, so that the shutter plate 14 is pushed up and the trolley can be pulled in or pulled out.

〔考案の効果〕[Effect of idea]

本考案によれば台車形接地装置が構造簡易で精
度を要せず調整容易な鎖錠装置で完全にインタロ
ツクされるので保守性向上と価格低減の効果があ
る。 According to the present invention, the trolley type grounding device is completely interlocked with a locking device that has a simple structure, does not require precision, and is easy to adjust, thereby improving maintainability and reducing costs.

【図面の簡単な説明】[Brief explanation of the drawing]

第１図は従来の鎖錠装置を有する台車形接地装
置の正面図、第２図は側面図、第３図は鎖錠棒の
正面図、第４図は本考案の実施例の鎖錠装置を有
する台車形接地装置の正面図、第５図は側面図、
第６図はインタロツクシヤツタ板の斜視図であ
る。 １……引出形台車、２……可動接触子、３……
碍子、４……導体カバー、５……台車引入れ操作
軸、６……ハンドル、７……接地開閉器、９……
接地用接触子、１０……接地母線、１３……操作
ハンドル、１４，１５……シヤツタ板、１６……
鎖錠アーム、７３……開閉軸。 Fig. 1 is a front view of a trolley type grounding device with a conventional locking device, Fig. 2 is a side view, Fig. 3 is a front view of a locking rod, and Fig. 4 is a locking device according to an embodiment of the present invention. 5 is a front view of a trolley type grounding device having a
FIG. 6 is a perspective view of the interlock shutter plate. 1... Drawer type trolley, 2... Movable contact, 3...
Insulator, 4... Conductor cover, 5... Carriage pull-in operation shaft, 6... Handle, 7... Earthing switch, 9...
Ground contact, 10... Ground bus bar, 13... Operating handle, 14, 15... Shutter plate, 16...
Locking arm, 73...opening/closing shaft.

Claims (1)

【実用新案登録請求の範囲】 接地開閉器を搭載した引出形台車に取付けた可
動接触子を配電盤の遮断器接続口に挿入して母線
または負荷ケーブルを接地するようにした台車形
接地装置において、 台車前面板に、台車引入れ操作軸および接地開
閉器操作軸のハンドル挿入孔を上下方向並びに左
右方向に関して互いにずらして配置し、 台車前面板後方側で各ハンドル挿入孔をそれぞ
れ覆い台車前面板前方からの摺動操作により該当
ハンドル挿入孔の開放するシヤツター板を設け、 両シヤツター板は、該当ハンドル挿入孔の開放
ための摺動操作時に相手側シヤツター板の摺動を
直接に妨げるところに位置するように同一平面内
において一方が上下方向に他方が左右方向に摺動
可能となしたことを特徴とする台車形接地装置の
鎖錠装置。[Scope of claim for utility model registration] In a trolley-type grounding device in which a movable contact mounted on a draw-out-type trolley equipped with an earthing switch is inserted into a circuit breaker connection port of a switchboard to ground a bus bar or load cable, The handle insertion holes of the trolley pull-in operating shaft and the grounding switch operating shaft are arranged on the front panel of the trolley so as to be offset from each other in the vertical and horizontal directions, and each handle insertion hole is covered on the rear side of the front panel of the trolley. A shutter plate is provided that opens the corresponding handle insertion hole by a sliding operation from A locking device for a trolley type grounding device, characterized in that one side is slidable in the vertical direction and the other side is slidable in the horizontal direction within the same plane.