JPH084661Y2 - Switch lifting tool - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present application is mainly a hoisting tool for hoisting a switch so that the hoisting tool can be securely attached to a wire arm of a utility pole.

(Prior art and problems) Various types of switch hoisting tools of this kind have been devised and used from the past, but all of them are lifted by a rope from directly above the switch and set on a braid, so the rope has a high pressure. Since there are low-voltage lines and other obstacles under the power poles and between the lines, it was necessary to take preventive measures such as protection or temporary removal in case of contact with these. Therefore, there is a drawback that it is difficult and difficult to carry out the pillar work.

(Means for Solving the Problems) Therefore, according to the present application, it is possible to use an aerial work vehicle to lift a switch from a position distant from an electric wire on a utility pole or a mounting object and set the switch on a armor as shown in FIG. As shown in FIG. 10, the frame 1 bent into an approximate U shape is used in a horizontally long shape, and the hanging ring portion 4 is provided on the upper side and the hanging hooks 2 and 3 are provided on the lower side, and the hoisting wire is lifted up to the arm height, and from the outside of the high voltage line. It is to be moved and attached at a predetermined position.

(Example) As shown in the drawings, the present application is one in which two frames 1 bent into an approximate U shape are horizontally long, and a hanging ring portion 4 is provided on the upper side and hanging hooks 2 and 3 are provided on the lower side. A connecting plate 11 for retaining and reinforcing is bolted to the upper end, and a retaining metal 12 is also tacked to the lower end.

The hanging hooks 2 and 3 are approximately L-shaped, and one end is welded with a collar with a wing bolt which is fitted and fixed to the frame 1, and the other end is also welded with a retaining hook. The hanging hook 2 is oriented in a direction perpendicular to the longitudinal direction of the frame 1, and the hanging hook 3 is oriented in the same direction as the longitudinal direction of the frame 1, which is the direction of the hanging ear of the switch. It is something that is selected in a timely manner.

The suspension ring portion 4 has a collar 42 with butterfly bolts, in which the frames 1 and 1 are fitted and fixed to a ring frame 41 bent in a U shape, welded to both ends, and a suspension ring 43 is rotatably bolted to the upper center part. The bolt for attaching the retractable rope 5 for preventing the switch from falling is pierced through the ring frame 41 and pulled out at a symmetrical position by sandwiching the suspension ring 43.

The suspension ring portion 4 moves to the center of gravity line when the switch is lifted and is fastened and fixed with butterfly bolts.

To describe in detail how to use it, first select the hanging hooks 2 and 3 according to the direction of the switch's hanging ears, insert them into the straight part on the lower side of the frame, and expand the frame 1 so that it fits between the switch's hanging ears. Also, move the hanging hooks 2 and 3 in the same manner, hook the hanging ears 12 at the four corners, and tighten and fix them with the butterfly bolts of the hanging hook.

Next, lift the switch a little and check if the switch is hung horizontally. If it is tilted, lower the switch once, move the suspension ring part to the center of gravity line, and tighten it with butterfly bolts. Then, using a crane provided on a work vehicle for aerial work (bucket, etc.), the hoisting wire is inserted from the outside of the high-voltage line toward the arm. After that, the worker who boarded the bucket attaches it to the arm with the switch attachment fitting.

It is installed in the above order, and can be safely and easily installed not only on newly installed and existing utility poles but also on complicated utility poles (communication lines, signboards, low voltage lines, etc.).

(Effect of the Invention) Since the present application has the structure as described above, the suspension rope does not have to pass between the high voltage lines, and there is a risk of contact with other obstacles without approaching the high and low voltage charging line. Since it is not necessary, the safety is improved, and the work of protecting or avoiding the low-voltage line and other obstacles is not required, so that there is a practical effect such that the work efficiency is improved.

[Brief description of drawings]

 FIG. 1 is a front view of the present invention, FIG. 2 is a right side view of the same, FIG. 3 is a partial front view in which a suspension hook is replaced, FIG. 4 is a right side view of the same, and FIGS. FIG. 7 is a perspective view of the hook, FIG. 7 is a front view of a state of using the hanging hook (2), FIG. 8 is a right side view of FIG. 8, and FIG. 9 is a front view of a state of using the hanging hook (3). The figure is the right side view. Symbols in the figure 1 ... Frame, 2, 3 ... Suspension hook 4 ... Suspension ring part, 11 ... Connection plate 12 ... Locking metal fitting, 41 ... Ring frame 42 ... Collar with butterfly bolt, 43 ... … Suspension ring 5 …… Retraction rope

 ─────────────────────────────────────────────────── ─── Continuation of front page (72) Yoshinori Nishimura Inventor Yoshinori Nishimura 4-1053 Mitake, Morioka-shi, Iwate Tohoku Electric Works Co., Ltd. Morioka Sales Office (72) Inventor Hitoshi Inoue 4-62 Shimotakino, Takino-cho, Kato-gun, Hyogo Prefecture Address Tatsuya Yamazaki, Examiner, Fujii Electric Works Co., Ltd.

Claims (1)

[Scope of utility model registration request] 1. Arrangement of approximately U-shaped frames 1 and 1 in a horizontally long shape,
A movable suspension ring portion 4 is provided by being fitted in the upper linear portion of the frame 1,1 and the upper ends of the frames 1,1 are connected by a connecting plate 11, and a movable suspension hook is provided in the lower linear portion. , 3 are inserted and provided, and a retaining metal fitting 1 is attached to the lower end.
A switch lifting tool characterized by having 2.