JPH0583822A - Presser piece removing device for come along - Google Patents

Abstract

PURPOSE:To simplify a presser piece removing device and to eliminate trouble such as derailing of drawing rope during drawing work by additionally providing a swing metal having one end pivoted to the presser piece and the other end provided with a pulley. CONSTITUTION:A swing metal 6 has one end pivoted to a shaft 2a at the end of one presser piece 2 and the other end formed with a clevis for bearing a pulley 7. A drawing rope D is stopped, at one end thereof, to the central part of a tail metal 3 through a pin 3a. Upon finish of connecting work of split wire, a semi-wire S2 is loosened to transfer tension to a wire. Consequently, wire gripping force of cam lever 4 is weakened. The drawing rope D is then drawn on the ground. At that time, the swing metal 6 simply responds slightly to the direction of a worker even when he stands on the side of the wire, and the direction of drawing force matches with a line connecting between the shaft 2a and the pin 3a. Consequently, the presser piece 2 can be removed easily. Upon removal of the presser piece 2, wire W gripping force disappear completely and a come along falls naturally along the wire onto the ground.

Description

【発明の詳細な説明】Detailed Description of the Invention

【０００１】[0001]

【産業上の利用分野】本発明は延線作業に用いるカムア
ロングに於いて電線を把持する押圧片を抜取る装置に関
するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a device for removing a pressing piece for holding an electric wire in a cam along used for wire drawing work.

【０００２】[0002]

【従来の技術】プレハブ工法の延線作業では、カムアロ
ングで引止めた電線に、地上で割ワイヤの接続作業をす
る。そのあとカムアロングにかかる張力を電線に移し、
最後にカムアロングを撤去する。しかし張力を緩めてい
く間に、カムアロングは電線と共に、上部の鉄塔金車方
向へと上昇しているので、カムアロングは地上からの遠
隔操作で撤去可能なことを必要とする。2. Description of the Related Art In the wire extension work of the prefabricated construction method, a split wire is connected to an electric wire held by a cam along the ground. After that, the tension applied to the cam along is transferred to the wire,
Finally remove Kamalong. However, while the tension is being released, the come-along, along with the electric wire, is moving upward toward the tower tower rail car, so the come-along needs to be removable from the ground by remote control.

【０００３】この目的に添うカムアロングとして特願平
２−２９４５０１に次の構造のものが開示されている。
図２に於いて頭部金具１には対向１対の押圧片２が電線
を挾持可能に設けてある。また頭部金具１と尾部金具３
は、その左右両端を夫々カムレバ４とアーム５から成る
対向１対のリンク部材で結ばれており、尾部金具に図の
右方への張力がかかると、カムレバの回動で押圧片が押
圧され、電線を把持する。カムアロングを撤去する際
は、一方の押圧片２に抜取ロープ９の一端が係止してあ
るので、このロープを用いて抜取ればよい。ただしこの
ロープは抜取方向を維持しながらけん引せねばならぬた
め、まず尾部金具中央部に設けた滑車Ｐ１に係合させ、
そのあと２つの滑車Ｐ２，Ｐ３経て、地上へ垂下されて
いる。３つの滑車を用いるため、けん引作業中に抜取ロ
ープの脱輪が起こりやすく、構造の簡素化が望まれてい
た。Japanese Patent Application No. 2-294501 discloses a come-along structure having the following structure for this purpose.
In FIG. 2, a pair of facing pressing pieces 2 are provided on the head metal fitting 1 so as to be able to hold an electric wire. Also, the head metal fitting 1 and the tail metal fitting 3
Is connected at its left and right ends by a pair of facing link members each consisting of a cam lever 4 and an arm 5. When tension is applied to the tail bracket to the right in the figure, the pressing piece is pressed by the rotation of the cam lever. , Hold the wire. When removing the cam-along, one end of the extraction rope 9 is locked to the pressing piece 2 on one side, and therefore the removal can be performed using this rope. However, since this rope must be pulled while maintaining the extraction direction, first engage the pulley P1 provided at the center of the tail bracket,
After that, it is hung down on the ground through two pulleys P2 and P3. Since three pulleys are used, removal of the extraction rope is likely to occur during towing work, and simplification of the structure has been desired.

【０００４】[0004]

【課題解決の手段】一端が押圧片に枢着され、他端に滑
車を備えた首振金具を新設する。また抜取ロープ端の係
止を押圧片から尾部金具に移し、このロープを上記滑車
に係合させ、他端を地上でけん引する。SOLUTION: A swing fitting having one end pivotally attached to a pressing piece and a pulley at the other end is newly provided. Also, the locking of the end of the extraction rope is transferred from the pressing piece to the tail fitting, this rope is engaged with the pulley, and the other end is towed on the ground.

【０００５】[0005]

【実施例】対象とするカムアロングは抜取装置を除いて
は従来技術で述べた公知例（図２）と異ならないので、
共通部材の符号はそれをそのまま踏襲することとし、図
１について説明する。頭部金具１はその中央部で１対の
押圧片２を保持し、この押圧片によって電線Ｗを挾持可
能である。尾部金具３は三角形をなし、その一辺両端
が、カムレバ４，アーム５から成る対向１対のリンク部
材を介して、頭部金具両端へ夫々回動可能に連結されて
いる。尾部金具３の末尾にはカムアロング引止用のセミ
ワイヤＳ２が接続する。尾部金具への張力負荷により、
カムレバは回動し、押圧片を介して電線を把持する。EXAMPLE Since the target cam along is the same as the known example (FIG. 2) described in the prior art except for the extracting device,
The reference numeral of the common member is the same as that of the common member, and will be described with reference to FIG. The head metal fitting 1 holds a pair of pressing pieces 2 at the center thereof, and the electric wires W can be held by the pressing pieces. The tail fitting 3 has a triangular shape, and both ends of one side of the tail fitting 3 are rotatably connected to both ends of the head fitting via a pair of opposing link members composed of a cam lever 4 and an arm 5. A semi-wire S2 for holding the cam along is connected to the end of the tail fitting 3. Due to the tension load on the tail bracket,
The cam lever rotates and grips the electric wire via the pressing piece.

【０００６】次に本発明では首振金具６を追加する。こ
の金具は一端部で一方の押圧片２の末尾の軸２ａへ枢着
され、他端部はクレビスを形成し、これで滑車７を軸支
する。抜取ロープＤは一端が尾部金具の中央部へピン３
ａで係止され、滑車７と係合したあと、後方からけん引
可能に垂下している。Next, in the present invention, a swing fitting 6 is added. This metal fitting is pivotally attached at one end to the shaft 2a at the end of the one pressing piece 2, and the other end forms a clevis, which pivotally supports the pulley 7. One end of the extraction rope D is pin 3 to the center of the tail bracket.
It is locked at a, engages with the pulley 7, and then hangs down so that it can be towed from the rear.

【０００７】[0007]

【作用】割ワイヤの接続工事を終えたあと、セミワイヤ
Ｓ２を緩め、張力を電線に移す。これによりカムレバの
電線把持力は弱まる。このあと抜取ロープＤを地上から
けん引する。その際作業者が電線の側方にいたとして
も、首振金具６は若干その方向へ応動するのみで、抜取
力の方向はほぼ軸２ａとピン３ａを結ぶ線上にある。押
圧片の抜取は無理なく行われる。この抜取により電線Ｗ
を把持する力は完全に消え、カムアロングは電線に沿い
地上まで自然降下する。[Operation] After the split wire connection work is completed, the semi-wire S2 is loosened and the tension is transferred to the electric wire. This weakens the electric wire gripping force of the cam lever. After this, the extraction rope D is towed from the ground. At this time, even if the worker is on the side of the electric wire, the swing metal fitting 6 only slightly responds to that direction, and the direction of the extracting force is almost on the line connecting the shaft 2a and the pin 3a. The pressing piece can be extracted without difficulty. Wire W
The gripping force disappears completely, and Cam Along naturally descends along the wire to the ground.

【０００８】[0008]

【効果】電線引止の任務を果たしたあと、電線上方に位
置するカムアロングを撤去する作業に於いて、押圧片抜
取装置を著しく簡素化し、抜取作業中の引抜ロープ脱輪
等の支障を皆無とする。[Effect] In the work of removing the cam-along located above the electric wire after performing the task of stopping the electric wire, the pressing piece extracting device has been remarkably simplified, and there is no hindrance such as pull-out rope removal during the extraction work. To do.

【０００９】[0009]

【図面の簡単な説明】[Brief description of drawings]

【図１】本発明の平面図である。FIG. 1 is a plan view of the present invention.

【図２】公知例の正面図である。FIG. 2 is a front view of a known example.

【００１０】[0010]

【符号の説明】[Explanation of symbols]

１ 頭部金具 ２ 押圧片 ３ 尾部金具 ４ カムレバ ５ アーム ６ 首振金具 ７ 滑車 Ｄ 抜取ロープ Ｓ２ セミワイヤ Ｗ 電線 1 Head bracket 2 Pressing piece 3 Tail bracket 4 Cam lever 5 Arm 6 Swing bracket 7 Pulley D Extraction rope S2 Semi-wire W Electric wire

─────────────────────────────────────────────────────
─────────────────────────────────────────────────── ───

【手続補正書】[Procedure amendment]

【提出日】平成４年８月２７日[Submission date] August 27, 1992

【手続補正２】[Procedure Amendment 2]

【補正対象書類名】明細書[Document name to be amended] Statement

【補正対象項目名】図面の簡単な説明[Name of item to be corrected] Brief explanation of the drawing

【補正方法】変更[Correction method] Change

【補正内容】[Correction content]

【図面の簡単な説明】[Brief description of drawings]

【図１】本発明の平面図である。FIG. 1 is a plan view of the present invention.

【図２】首振金具６の詳細図である。FIG. 2 is a detailed view of a swing fitting 6.

【図３】図１のＡＡ断面矢視図である。3 is a cross-sectional view taken along the line AA of FIG.

【図４】図１のＢＢ断面図である。FIG. 4 is a cross-sectional view taken along the line BB of FIG.

【図５】公知例の正面図である。FIG. 5 is a front view of a known example.

Claims (1)

【特許請求の範囲】[Claims] 【請求項１】 頭部金具と尾部金具の左右両端を夫々カ
ムレバとアームからなる対向１対のリンク部材で結び、
尾部金具への張力負荷により、カムレバ先端が頭部金具
内の押圧片を介して電線を把持するようにしたカムアロ
ングに於いて、一端を一方の押圧片に枢着され他端に滑
車を備えた首振金具を設け、一端が尾部金具に係止され
た引抜ロープを上記滑車と係合させた後、地上でけん引
するようにしたカムアロングの押圧片抜取装置。1. A head metal fitting and a tail metal fitting are connected to the left and right ends by a pair of facing link members each comprising a cam lever and an arm,
In the cam along in which the tip of the cam lever grips the electric wire through the pressing piece in the head fitting due to the tension load on the tail fitting, one end is pivotally attached to one pressing piece and the other end is provided with a pulley. A pushing piece extracting device for a cam along which a swinging metal fitting is provided and a pulling rope whose one end is locked to a tail metal fitting is engaged with the pulley and then towed on the ground.