JPH0343784Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Field of Application) The present invention relates to a tool for attaching and detaching a connecting pin in a suspension insulator chain.

(Prior art) Generally, this type of attachment/detachment tool is
As shown in Publication No. 23308, it is formed from a flat plate material, and at one end in the length direction, there is a part that touches the lower outer peripheral surface of the cap of the suspension insulator, and a suspension insulator is placed at an appropriate distance upward from this part. A hooking portion for a connecting pin is provided, and in order to pull out the connecting pin connecting the suspension insulator from the insulator, the contact portion is applied to the outer circumferential surface of the lower part of the cap, and the By inserting the hook part into the head hole of the connecting pin and swinging the tool using the abutment part as a fulcrum, the connecting pin is pulled out from the insulator by the hook part. There is.

(Problems to be Solved by the Invention) However, since the attachment/detachment tool disclosed in the above publication is formed from a flat plate material as described above, the surface width of the abutting portion is extremely narrow. Since the outer circumferential surface of the cap to which this abutting part is applied is an arcuate surface, when the pin is being pulled out, the abutting part may slip on the outer circumferential surface, so that the pulling out operation can be performed reliably. There is a problem that it cannot be done.

This idea was devised in view of the above circumstances.
It is an object of the present invention to provide an attachment/detachment tool in which the abutting portion does not slip against the lower outer circumferential surface of the cap when the pin is pulled out.

(Means for Solving the Problems) Accordingly, the present invention has a part 5b that touches the outer peripheral surface of the body part 10 of the cap 1 in the suspension insulator, and a part 5b that touches the outer peripheral surface of the body part 10 of the cap 1 in the suspension insulator. In the tool for attaching and detaching the connecting pin, which is provided with a hook portion 5c for the suspension insulator connecting pin 3 provided above, the connecting pin is attached to the abutting portion 5b along the circumferential direction with respect to the outer circumferential surface of the body portion 10 of the cap 1. It is characterized by providing a curved abutment surface 6.

(Function) According to the present invention, when the connecting pin 3 is pulled out, the contact surface 6 of the contact portion 5b is reliably brought into surface contact with the outer circumferential surface of the body portion 10 of the cap 1 having an arc shape. When the tool is swung using the surface 6 as a fulcrum, the risk of the abutting portion 6 slipping relative to the cap 1 is extremely reduced.

(Embodiments) A tool for attaching and detaching a connecting pin in a suspension insulator chain according to the present invention will be described below with reference to embodiments shown in the drawings.

First, as is known, the suspension insulator chain indicated by the symbol A in FIGS. 5 and 6 has an insulator insulator 2 assembled with a cap 1 having a cylindrical body 10 on its head, and a connecting pin 3 made of a split pin. A plurality of connecting rods 2 are connected in series by a so-called ball socket method using
At the same time, the connecting pin 3 is inserted into the cap 1, and the connecting pin 3 prevents the expanded portion 22 from coming off the fitting groove 11. The bodies 2 are connected in series.

The present invention relates to a tool for attaching and detaching the connecting pin 3 in the suspension insulator chain, and this tool will be explained below.

In the figure, 4 is a wooden tool body, 5 is a fixing part 5a fixed to one end in the length direction of the tool body 4,
The body portion 1 provided at one end in the length direction of the fixed portion 5a
0 A metal fitting equipped with a contact part 5b to the outer peripheral surface and a hook part 5c located above the contact part 5b, and the fixing part 5a of the metal fitting 5 is fixed in the longitudinal direction of the tool main body 4. It is fixed at one end.

However, in the embodiment shown in the figure, the abutting portion 5b
A patch plate 6 is provided with a curved patch surface 6 having approximately the same curvature as the outer circumferential surface of the body 10 of the cap 1.
0 is fixed by welding, and the abutment surface 6 is attached to the body part 1.
0, and the one shown in the drawing is the hook part 5.
The connecting pin 3 with c driven into the cap 1
When the tool body 4 is inserted into the head hole of the insulator 2 and the abutment surface 6 is in contact with the outer peripheral surface of the body 10, the tool body 4 extends obliquely upward and the tool body 4 is inserted into the head hole of the insulator 2.
The tool body 4 is set so as to touch the lower edge of the tool body 4, so that the swing angle θ of the tool body 4 can be set to a maximum value.

In the embodiment shown in the figure, the other end of the tool body 4 in the length direction is bulged in a direction perpendicular to the length direction of the tool body 4, and the iron plate 7 is attached to the end face of the bulge 41. In addition to fixing with screws 70, a fitting groove 71 is formed on the outer surface of the iron plate 7 into which the head of the connecting pin 3 can fit.

Next, the operation of pulling out and driving the connecting pin 3 using the tool having the above structure will be explained.

First, in order to pull out the connecting pin 3 that has been driven into the cap 1, as shown in FIG. After applying the contact surface 6 to the outer circumferential surface of the body 10 of the cap 1, the free end portion of the tool body 4 is swung downward using the contact surface 6 as a fulcrum, thereby producing a so-called lever action. Then, the connecting pin 3 is pulled out from the cap 1.

Thus, when the connecting pin 3 is pulled out, the arc-shaped contact surface 6 is in surface contact along the circumferential direction with the outer peripheral surface of the body portion 10 of the cap 1, which is also arc-shaped. When the tool is swung using the surface 6 as a fulcrum, there is very little risk that the abutment surface 6 will inadvertently slip against the cap 1.

Next, in order to drive the connecting pin 3 inserted into the pin hole of the cap 1, as shown in FIG. After fitting the head of the connecting pin 3 into the fitting groove 71 of the iron plate 7, the tool body 4 is held in a substantially horizontal state and the abutment plate 60 is struck to push the split pin 3 into the cap. 1
Push it inward.

Although the tool body 4 is made of wood in the above embodiments, it is not limited to this and may be made of synthetic resin, for example.

(Effects of the Invention) As described above, the present invention has the body part 10 of the cap 1 in the suspension insulator attached to one longitudinal end of the tool body 4.
A contact portion 5b to the outer peripheral surface and a hook portion 5c of the suspension insulator connecting pin 3 provided above the contact portion 5b.
In the tool for attaching and detaching the connecting pin, the tool includes:
By providing the abutment portion 5b with a curved abutment surface 6 that extends in the circumferential direction with respect to the outer peripheral surface of the body portion 10 of the cap 1, when the connection pin 3 is pulled out,
Since the abutment surface 6 of the abutment portion 5b reliably makes surface contact along the circumferential direction with the arc-shaped outer circumferential surface of the body portion 10 of the cap 1, when the tool is swung using the abutment surface 6 as a fulcrum, There is very little risk that the abutting portion 6 will accidentally slip against the cap 1, and the operation of pulling out the connecting pin 3 can be performed safely and easily.

[Brief explanation of the drawing]

Fig. 1 is a front view showing an embodiment of the attachment/detachment tool according to the present invention, Fig. 2 is an enlarged side view showing the metal fittings, and Fig. 3 is an enlarged side view showing one end of the tool body. , Fig. 4 is an explanatory diagram showing the relationship between the abutment surface of the caul plate and the cap, Fig. 5 is an explanatory diagram showing the state of driving the connecting pin by the tool, and Fig. 6 is an explanatory diagram showing the state of the connecting pin driving operation using the tool. It is an explanatory diagram showing the state of work. 1...Cap, 2...Insulator insulator, 3...Connecting pin, 4...Tool body, 5b...Abutment part, 5c
...Hook part, 6...Abutment surface.

Claims (1)

[Scope of utility model registration request] At one end in the length direction of the tool body 4, there is a part 5b that abuts against the outer circumferential surface of the body part 10 of the cap 1 in the suspension insulator.
In the tool for attaching and removing the connecting pin, which is provided with a hook portion 5c for the suspension insulator connecting pin 3 provided above the abutment portion 5b, the outer peripheral surface of the body portion 10 of the cap 1 is attached to the abutment portion 5b. A tool for attaching and detaching a connecting pin in a suspension insulator chain, characterized in that a curved abutment surface 6 is provided along the circumferential direction.