JPH0116335Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Industrial Application Field) The present invention relates to an overhead line twist prevention device that prevents snow from accumulating on overhead lines by suppressing the twisting of the overhead lines due to snow accumulation.

(Prior Art) A conventional overhead wire twist prevention device 1 of this type has a clamp cap 3 rotatably connected to the upper part of a clamp body 2 by a hinge portion 4, and an overhead wire twist prevention device 1 is provided between the clamp body 2 and the clamp cap 3. Insert line 5,
The lower part of the clamp cap 3 is fixed to the clamp body 2 with a bolt 6 and supported by an overhead wire 5, and a pair of weights 8 are attached below the clamp body 2 via a horizontal arm 7.
The structure was such that it was suspended and supported.

However, the overhead wire twist prevention device 1 having such a structure has the following drawbacks.

(b) Tightening bolts in the air is difficult and tends to result in individual differences in tightening methods.

(b) If the bolt 6 becomes loose, there is a risk that the twist prevention device 1 will fall off.

(c) If the bolt 6 is loosened, the twist prevention device 1 will generate noise when the overhead wire 5 vibrates.

(d) Since the outer surface of this twist prevention device 1 has many unevenness,
When the overhead wire 5 vibrates greatly due to the gearropping phenomenon caused by the wind, there is a risk that the twist prevention device 1 will get caught on the adjacent overhead wire and become unable to be removed.

(Purpose of the invention) The purpose of the invention is to provide an overhead wire twist prevention device that can be installed without any difference between individuals, does not have the risk of falling off, does not emit noise, and does not have the risk of getting caught on other overhead wires and becoming unable to come off. There is something to do.

(Structure of the invention) The overhead wire twist prevention device according to the invention includes a hanging member that has an inverted U shape and has a wire insertion groove extending upward from the bottom, and is supported by the lower end of the hanging member. a pair of weights, a support plate insertion groove formed in each of the weights corresponding to the entrance of the electric wire insertion groove, and a support plate insertion groove formed in each of the weights corresponding to the entrance of the electric wire insertion groove; a support plate inserted into each of the support plate insertion grooves; a saddle arm movably penetrated through the support plate and projected into the electric wire insertion groove; and a saddle arm inserted into the electric wire insertion groove. a clamp saddle attached to the inner end of the arm; and a clamp fitted around the outer periphery of the saddle arm with both ends abutting the clamp saddle and the support plate to bias the clamp saddle in the clamping direction. The saddle arm is characterized by comprising a spring and a nut screwed onto the outer end of the saddle arm projecting outward from the support plate.

(Example) Hereinafter, an example of the present invention will be described in detail with reference to FIGS. 3 and 4. As shown in the figure, the overhead wire twist prevention device 1 of this embodiment has an inverted U-shaped hanging member 9, and a wire insertion groove 10 is formed in the hanging member 9 from the bottom upward. . This hanging member 9
A weight 11 is integrally formed at the lower end of each. These hanging members 9 and weight 11 are integrally formed of cast iron or the like. A support plate insertion groove 1 is provided in both weights 11 corresponding to the entrance 10A of the electric wire insertion groove 10.
2 are formed respectively. A support plate 13 is inserted into both support plate insertion grooves 12 across the entrance 10A of the electric wire insertion groove 10. A hole 14 is formed in the center of the support plate 13, and a saddle arm 15 is movably passed through the support plate 13 using the hole 14, and is projected into the wire insertion groove 10. A clamp saddle 16 is integrally attached to the inner end of the saddle arm 15 within the wire insertion groove 10. An arcuate wire gripping groove 17 is formed on the upper surface of the clamp saddle 16, and a wire gripping groove 18 is also formed on the inner surface of the upper end of the hanging member 9 to grip an overhead wire. clamp saddle 16
A clamp spring 19 is fitted to the outer periphery of the saddle arm 15 with both ends in contact with the support plate 13 and the clamp saddle 16 is biased in the clamping direction. A nut 20 is screwed onto the outer end of the saddle arm 15 that projects outward from the support plate 13.

Such an overhead wire twist prevention device 1 has a nut 20.
By tightening and compressing the clamp spring 15, the clamp saddle 16 is pressed against the folded part side of the hanging member 9, and the support plate 13 is
The mutually opposing forces pressing on 1 disappear,
Or, the clamp saddle 16, clamp arm 15, clamp spring 19, and support plate 1 are weakened.
3 and a nut 20 can be pulled out from the wire insertion groove 10. In this state, the hanging member 9 is fitted onto the overhead wire using the wire insertion groove 10, and then the clamp spring 1 is inserted.
9 is in a compressed state.
into the wire insertion groove 10, and then tighten the clamp saddle 1.
6 on the bottom surface of the overhead wire, and support plate 13 with both weights 1
1 into the support plate insertion groove 12 until it touches the bottom of the groove 12. In this state Natsuto 20
When loosened, the clamp saddle 16 is pushed up by the spring force of the clamp spring 19 and clamps the overhead wire, and the support plate 13 is pushed down by the reaction force and is pressed against the inner wall of the groove 12 to prevent it from coming off, and this twist prevention device 1 can be firmly fixed to the overhead wire.

(Effects of the invention) As explained above, the overhead wire twist prevention device according to the invention has a structure that uses the reaction force of the clamp spring to tighten, so it is possible to clamp with a constant force regardless of individual differences. It is possible to prevent the twist prevention device from falling off. Additionally, since the nut must be loosened in the air, the work efficiency is also improved. Furthermore, according to the present invention, since the belt is always tightened with a constant force, there is no loose part and noise generation can be prevented. Furthermore, according to the present invention, the irregularities on the outer periphery are small, and the entrance of the wire insertion groove is covered with a support plate, so even if the overhead wire vibrates greatly, this twist prevention device will prevent other overhead wires from shaking. It is possible to prevent accidents from getting caught and becoming impossible to remove.

[Brief explanation of the drawing]

1 and 2 are a front view and a side view of a conventional overhead wire twist prevention device, and FIGS. 3 and 4 are a front view and a side view of an embodiment of an overhead wire twist prevention device according to the present invention. be. 1...Twist prevention device, 5...Overhead wire, 9...Hanging member, 10...Wire insertion groove, 10A...Inlet, 1
1... Weight, 12... Support plate insertion groove, 13... Support plate, 14... Hole, 15... Saddle arm, 16
... Clamp saddle, 17, 18 ... Wire gripping groove, 19 ... Clamp spring, 20 ... Nut.

Claims (1)

[Scope of utility model registration request] a hanging member having an inverted U-shape and having a wire insertion groove extending upward from the bottom; a pair of weights respectively supported at the lower ends of the hanging member; Support plate insertion grooves correspondingly formed in both the weights, and support plates inserted into the respective support plate insertion grooves of the both weights across the entrances of the electric wire insertion grooves. a saddle arm movably penetrated through the support plate and projected into the wire insertion groove; a clamp saddle attached to an inner end of the saddle arm within the wire insertion groove; a clamp spring that is fitted onto the outer periphery of the saddle arm in contact with the clamp saddle and the support plate, and biases the clamp saddle in the clamping direction; and a clamp spring that protrudes outward from the support plate. 1. An overhead wire twist prevention device comprising a nut screwed onto an outer end.