JPH06351121A - Roller apparatus for laying cable - Google Patents

Abstract

PURPOSE:To enable a wire and accessories such as wire connection to easily paas through the wire guide hole of a roller unit without being caught in the hole. CONSTITUTION:A guide plate 22 is mounted in the manner of holding the end of the guide face 11A of any pair of adjacent rollers 11 from both sides viewed from the direction of wire extension. Time guide face 22C of this guide plate 22 previously raises the wire and its connection, which are going to pass through a wire guide hole 13, before they come into contact with the rollers 11 so that they pass through a place near the center of the wire guide hole 13. Therefore, the passage is smoothed and the wire and connection and the guide face ends of the rollers are prevented from rubbing against each other and being damaged.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric wire drawing roller device for guiding electric wires or linear objects such as messenger ropes on electric poles in the work of drawing overhead distribution lines.

[0002]

2. Description of the Related Art Overhead power distribution lines are suspended from utility poles arranged at appropriate intervals, and processing such as branching is performed on the utility poles.
FIG. 2 shows a side view of a main part of a general electric pole. As shown in the figure, the arm pole 2 bent in a U-shape, for example, is attached to the telephone pole 1. In the example of this figure, three insulators 3 are fixed to the armrest 2 in the vertical direction, and the electric wires are bundled here. In the case of performing such construction, the electric wire is previously extended along the electric pole, and at this time, the wire extension roller device is fixed to the arm member 2 at the mounting positions A1 to A3 in the figure.

FIG. 3 shows a front view of a main part of an electric wire drawing roller device developed and applied by the present inventors. The device shown in the figure is fixed to the armrest 2 shown in FIG. 2 by a clamp (not shown). A support frame 4 as shown in the drawing extends from the clamp, and a roller unit 10 is attached thereto. The roller unit 10 rotatably supports three rollers 11 by a bearing frame 12. As shown in the figure, the three rollers 11 are arranged at the positions of the sides of an equilateral triangle, and each form a wire guide hole 13 with the guide surface 11A facing inward. The electric wire 15 is drawn in here, and the electric wire is smoothly extended from the electric pole to the electric pole in order.

[0004]

By the way, the above-described electric wire drawing roller device has conventionally had the following problems to be solved. As shown in FIG. 3, this wire-rolling roller device is configured to guide the electric wire 15 by means of three rollers 11, so that the weight is reduced and the handling is facilitated.
However, as shown in FIG. 3, the end portions of the guide surface 11A of each roller 11 are arranged close to each other, but it is difficult to make the wire guide hole 13 itself a perfect circle. Therefore, it is necessary to prevent the electric wire 15 from being rubbed against the end of the guide surface of the roller 11 and damaged. Further, the electric wire 15 may be subjected to a branching process or the like, and the connecting portion may pass through the electric wire guide hole 13. However, in that case, there arises a problem that the connection portion is caught in the wire guide hole 13 especially near the end portion of the guide surface of the roller, and the passage thereof is not smoothly performed.

The present invention has been made paying attention to the above points, and an electric wire can easily pass through the roller unit having the above-described structure, and further, an accessory such as an electric wire connecting portion does not get caught. An object of the present invention is to provide an electric wire drawing roller device configured to easily pass through.

[0006]

SUMMARY OF THE INVENTION An electric wire drawing roller device of the present invention is installed so as to surround an electric wire to be drawn, and has a plurality of rollers each having a wire guide hole with its rolling surface facing the electric wire. And a bearing frame that supports the rotation shaft of each roller, and the bearing frame end portions of a pair of adjacent rollers of the plurality of rollers that are sandwiched from both sides when viewed from the extending direction. And a guide plate that is installed above and holds the electric wire in the electric wire guide hole.

[0007]

In this device, a guide plate is attached so as to sandwich the end portions of the guide surfaces of any pair of adjacent rollers from both sides when viewed from the extending direction. The guide surface of this guide plate is preliminarily lifted up before contacting the roller with the electric wire which is going to pass through the electric wire guide hole, and the connecting portion thereof, so that the electric wire and the connecting portion pass through a place near the center of the electric wire guide hole. Therefore, the laying work is facilitated, and the electric wire and the connecting portion are not scratched by rubbing against the end portion of the guide surface of the roller.

[0008]

The present invention will be described in detail below with reference to the embodiments shown in the drawings. FIG. 1 is a front view of main parts showing an embodiment of an electric wire drawing roller device of the present invention. This device is obtained by mounting guide plates 22 and 32 (not shown in FIG. 1) on both sides of the bearing frame 12 of the conventional device shown in FIG. That is, the bearing frame 12 is fixed by the bolt 5 to the tip of the support frame 4 that supports the wire drawing roller device. The bearing frame 12 has a dogleg shape as a whole, and bearing pieces 16A and 16B are attached to both ends thereof. Thus, the three rollers 11 are rotatably supported at the positions of the sides of the equilateral triangle as shown in the figure. The roller 11 supported by the bearing pieces 16A and 16B in the figure is supported by one rotation shaft 11C of the roller piece 16A so that the roller 11 can be opened and closed with respect to the bearing piece 16A in a plane perpendicular to the plane of the drawing. Further, the other rotating shaft 11B of the roller 11 is supported by a snap-type support body with respect to the bearing piece 16B. As a result, the roller 11 is opened and closed in a direction perpendicular to the paper surface as described later, and the roller 11 can be inserted into the wire guide hole 13 without cutting the wire between the bearing pieces 16A and 16B. .

The roller unit 10 is mainly used by being fixed on a telephone pole so that the right side portion of the drawing is on the bottom. Therefore, a guide plate 22 as shown in the figure is fixed to the right center portion of the bearing frame 12 with screws 21. The positioning hole 2 is provided at the center of the guide plate 22.
2A is provided, and the positioning pin 23 is fitted therein to accurately set the position of the guide plate 22.

FIG. 4 shows a concrete structure of the guide plate 22 as described above. (A) is a front view, (b) is a left side view, and (c) is a top view. As shown in the figure, the guide plate 22 has a configuration in which the upper portion is shaved off, a positioning hole 22A is provided in the center, and a screw hole 22B is provided on the right side thereof. Furthermore, a guide surface 22C is formed on the upper portion so as to guide the wire smoothly so as to be inclined at about 45 °. On the other hand, a guide plate fixed to the bearing frame 12 is also provided on the opposite side of the guide plate 22 as described above.

FIG. 5 shows an embodiment of such a guide plate 32. (A) is a front view, (b) is a left side view, (c)
Is a top view. As shown in this figure, the guide plate 3 fixed so as to sandwich the bearing piece 16C together with the guide plate 22.
2, the screw hole 32B is provided in the center, and the positioning hole 32A is provided symmetrically in the upper portion. This positioning hole 32
A is configured to be fitted into two shaft fixing pins for the rollers 11 (not shown) provided on the back surface (not shown) of the bearing piece 16C shown in FIG. Similar to the guide plate 22 shown in FIG. 4, a guide surface 32C inclined at approximately 45 ° is also formed on the upper portion of the guide plate 32.

FIG. 6 is a side view showing the entire wire drawing roller device of the present invention. As shown in the drawing, the roller unit 10 described with reference to FIG. 1 is supported by a support frame 4 which is bent in an L shape as shown in the drawing, and the other end of the support frame 4 has a holder 40. Is attached. The holder 40 is for fixing the wire drawing roller device to the arm 2 provided on the electric pole. The holder 40 has a base 41 and a chain 4
2, male screw 43 and the like are provided. The male screw 43 is the base 4
The tip is fixed to the support shaft 44 fixed to 1.
The chain 42 has one end fixed to the base 41 and the other end connected to a washer 45. This washer 45
Is fitted into the male screw 43 and is tightened in the direction of the support shaft 44 by the thumbscrew 46. With the above-described structure, the chain 42 is wound around the armband 2 and the thumbscrew 46 is tightened to fix the wire-rolling roller device to the armband 2.

As can be seen from the portion of the roller unit 10 shown in FIG. 6, guide plates 22 and 32 are fixed to both sides of the bearing frame 12 of the roller unit 10. Therefore, the electric wire 15 is connected to the guide plates 22 and 32.
While being in contact with, the wire is extended in the direction of arrow C in the figure. It should be noted that the work of stripping and connecting the electric wire 15 is performed at the portion of the circle B in the drawing. FIG. 7 shows a side view showing the operation of the guide plate as described above. As shown in the figure, when the two guide plates 22 and 32 are arranged in the state as shown in the figure, when the electric wire 15 is extended in the direction of the arrow C, the connecting portion 15A is just the guide plate 32. As it rides on the guide surface 32A, it enters the wire guide hole 13 of the roller unit 10. On the other hand, when the wire 15 is extended in the direction opposite to the arrow C direction, the wire 15 enters the wire guide hole 13 so as to ride on the guide surface 22A of the guide plate 22. Therefore, in the state where the guide plates 22 and 32 are not provided, the connecting portion 15A suddenly collides with the roller 11, but is guided by the guide plates 22 and 32 and smoothly passes through the wire guide hole 13.

The present invention is not limited to the above embodiments. In the above embodiment, the shapes of the two guide plates are different from each other, but this is because the bearing frame 12 is asymmetric with respect to the wire guide hole. The location and number can be changed freely according to the situation. Of course, the shape of the bearing frame, the number of rollers for guiding, etc. may be freely changed. Also, the bearing piece 16C and the guide plate 2
There is no problem even if 2, 32 are integrated with each other, or the bearing frame and the bearing pieces 16A, 16B, 16C, etc. are all integrated with each other.

[0015]

In the electric wire drawing roller device of the present invention described above, a plurality of rollers are arranged so as to surround the electric wire to be drawn, and the guide surface of the roller is provided with respect to the bearing frame supporting these rotating shafts. Since the guide plate is arranged so as to sandwich the end from both sides when viewed from the extending direction,
The electric wire is smoothly drawn into the electric wire guide hole of the roller unit, and it is possible to prevent a trouble such as a connection portion being caught. Therefore, it is possible to smoothly perform the wire extending work without damaging the electric wire. In addition, since the workability is extremely improved, it is possible to shorten the period for wire extension work.

[Brief description of drawings]

FIG. 1 is a front view of main parts showing an embodiment of an electric wire drawing roller device of the present invention.

FIG. 2 is a side view of a main portion of a telephone pole.

FIG. 3 is a side view of a main part of a conventional wire drawing roller device.

FIG. 4 is an example of a guide plate used in the device of the present invention,
(A) is a front view, (b) is a left side view, and (c) is a top view.

FIG. 5 is another embodiment of the guide plate used in the apparatus of the present invention, (a) is a front view, (b) is a left side view, and (c) is a top view.

FIG. 6 is a side view showing the entire apparatus of the present invention.

FIG. 7 is an explanatory view showing the action of the guide plate of the device of the present invention.

[Explanation of symbols]

 4 Support Frame 10 Roller Unit 11 Roller 11A Guide Surface 12 Bearing Frame 22 Guide Plate

Claims (1)

[Claims] 1. A plurality of rollers which are installed so as to surround the extended electric wire and each of which has a guide surface facing the electric wire to form an electric wire guide hole, and a bearing frame which supports a rotating shaft of each roller. , The guide surface ends of any one of a pair of adjacent rollers of the plurality of rollers are sandwiched from both sides when viewed from the extending direction, are installed on the bearing frame, and the electric wire is inserted into the electric wire guide hole. An electric wire drawing roller device comprising: a guide plate for holding the wire.