JPH07108045B2 - Wire drawing tool - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a wire drawing tool used when an electric wire is drawn by passing through a metal wheel attached to a steel tower, and more specifically, a messenger wire and an erected electric wire. The present invention relates to a wire drawing tool for connecting a wire and preventing untwisting of the wire.

[Prior Art and Problems to be Solved by the Invention] Conventionally, as a wire drawing tool of this type, for example, JP-A-59-59
Those already proposed in Japanese Patent Laid-Open No. 006, Japanese Patent Laid-Open No. 59-59007, etc. are known. The wire drawing tools of these publications are particularly effective when they are used to wire an electric wire by passing through a gold wheel suspended from an angle steel tower located at a position where the electric line direction changes.

That is, in the angle tower, since the messenger wire is mounted on the gold wheel with an angle in the horizontal plane, the suspended gold wheel inevitably tilts, and as a result, the wire drawing tool tilts. When passing through the money train, there is a risk that the counterweight depending on its own weight may collide with the collar portion of the money car and damage the money car, and the counterweight itself may be damaged. Therefore, in order to prevent the counterweight from colliding with the money train, an attitude control connector composed of a plurality of connector elements connected in series in the wire drawing tool is provided, and it is sufficiently fitted in the groove of the money train. The posture is surely controlled so that the counterweight corresponds to the groove of the gold wheel, and the counterweight smoothly passes without hitting the gold wheel to prevent damage to the gold wheel and the counterweight and to be installed. It is designed to prevent the wires from untwisting.

As described above, various wire drawing tools have been proposed that perform the attitude control action for preventing the counterweight from colliding with the gold wheel in the angle steel tower. And
At present, a device for further exerting the effect of the posture control action in such a wire drawing tool is desired.

The present invention has been made in view of more reliably performing the posture control action of the wire drawing tool described above, and an object thereof is to be able to quickly determine the posture control direction and to further improve the posture control action. It is to provide a wire drawing tool that can be reliably performed.

[Means for Solving the Problems] In order to achieve the above object, in the present invention, a messenger wire and an erected electric wire are connected with a connecting link that can be bent up and down to prevent untwisting of the electric wire. In a wire drawing tool provided with a counterweight for doing, a link of a front end portion of the connecting links located on the front side of the counterweight with respect to the traveling direction of the messenger wire is set to the traveling direction of the messenger wire. The lateral bulge amount is larger than the vertical bulge amount.

[Operation] Therefore, after the messenger wire has passed through the gold wheel suspended on the angle tower, the link at the front end of the connecting links following the messenger wire is in an unstable state in which it is inclined with respect to the groove of the gold wheel. When entering, that is, when the connecting link comes into contact with the groove of the gold wheel with the bulging part in the left and right direction as the fulcrum, the action of the combined force of the messenger wire tension and the wire tension applied to the bulging connecting link As a result, turning force in the left-right direction is applied to the bulging connecting link, and the connecting link comes into contact with the groove of the gold wheel in a stable state. By this, the orientation control direction of the wire drawing tool is determined.

[Embodiment] An embodiment of the present invention will be described below in detail with reference to the drawings.

As shown in FIG. 6, in this embodiment, a wire drawing tool 3 for connecting the messenger wire 1 and the erected electric wire 2 and preventing the electric wire 2 from untwisting is provided in the traveling direction of the messenger wire 1. It is composed of a first connecting body 4 located on the front side of P and a second connecting body 5 located on the rear side thereof.

First, the first connecting body 4 will be described. The first connecting body 4 includes an anchoring metal 6 for retaining the messenger wire 1. As shown in FIGS. 2 and 3, the retractable metal fitting 6 has a front concave portion 6a and a rear convex portion 6b. 6c
A ring piece 6d is rotatably attached to the top. An attitude control connector 8 is articulated to the rear portion of the retractable metal fitting 6 by a screw pin 7 so as to be vertically rotatable. The attitude control connector 8 is formed by connecting ten connector elements 9, 10, 11 located on the front side and nine connector elements 12 located on the rear side in series with screw pins 13. It constitutes a series of connecting links. 1st, 2nd,
As shown in FIGS. 6 and 7, a series of ten connector elements 9 to 11 on the front side are each a single molded element.
As shown in the figure, the leading connector in which the two connector elements 9 and 10 located on the front end side first act on the gold wheel 14.
It is 15. A series of nine connector elements 12 on the rear side are formed by screwing a lower first connector element piece 16 and an upper second connector element piece 17 with a pair of screws 18. .

As shown in FIGS. 1, 2, and 7, a series of 10 connector elements 9
˜11 and 9 first connector element pieces 16 have convex portions 9a, 10a, 11a, 16a whose rear half portions are flat in the vertical direction, and convex portions of the retractable metal fitting 6 and connector elements 9 to 11 whose front half portions are immediately preceding. 6b, 9a, 10
a, 11a or a concave portion 9b, 10b, 11b, 16b that inserts the convex portion 16a of the first connector element piece 16, and each convex portion 9a, 10a, 11a, 16a and concave portion 9b, 10b, 11b, 16b And the screw pin 13 in the engaged state.
Is connected to the pin 13 so as to be vertically rotatable. The second connector element piece 17 is fixed to the upper surface of the rear half of the first connector element piece 16, and the front surface is provided with a recess 17a corresponding to the recess 16b of the element piece 16.

The attitude control connector 8 thus configured is vertically bendable as a whole, and is a connector element that constitutes the second leading connector 15 from the front end.
9,10 are messenger wires 1 as shown in Figs.
Bulging portions 9c, 9d, which bulge in the left-right direction with respect to the traveling direction P of
The shape has 10c and 10d. That is, 1st and 2
The adjacent portions of the first connector elements 9 and 10 are wider than the third and subsequent connector elements 11, and the planar shapes of both connector elements 9 and 10 are continuous so as to form a substantially oval shape. ing. That is, the planar shape of the leading connector 15 is such that it gradually expands and gradually narrows from the front side toward the rear side. In addition, the third connector element 11 from the front has a substantially circular cross section as shown in FIG. 5, while the second connector element 10 from the front has a substantially circular shape as shown in FIG. It has a substantially rhombic cross section that fits into the groove 14a of the gold wheel 14, and similarly the first connector element 9 from the front also has a substantially rhombic cross section. That is, the first and second connector elements 9 and 10 are shaped such that the bulging amount in the left-right direction is larger than the bulging amount in the up-down direction with respect to the traveling direction of the messenger wire 1. ing.

Also, in the attitude control connector 8, from the third from the front
The lower and upper surfaces of the fourteenth connector elements 11 and 12 are enlarged so as to gradually fit into the groove of the gold wheel 14, and the lower and upper surfaces of the connector elements 12 from the fifteenth to the end are made of gold. Car 14
It is formed so as to fit exactly into the groove 14a.

As shown in FIG. 7, a connecting metal fitting 20 is articulated to the convex portion 16a of the connector element 12 at the rearmost end of the attitude control connector 8 so as to be rotatable in the vertical direction about the pin 19, and the same connection is made. Metal fittings
A series of connecting links 22 are connected to the rear part of the 20 by a screw pin 21 so as to be vertically rotatable around the screw pin 21. The connecting link 22 includes eight flat plate-shaped first link pieces 22a and seven flat plate-shaped second link pieces 22b having recesses for inserting the first link pieces 22a at both ends. Are alternately connected so as to be rotatable.
As shown in FIG. 14, the first link piece 22a is chamfered at both lower end edges.

As shown in FIGS. 6 and 7, the counterweight 24 for preventing the twisting back of the electric wire 2 includes the attitude control connector 8 and the connecting fitting 20.
A pin (19) that connects (1) and (2) holds the front end portion of the connecting fitting (20) so that the connecting end is rotatably hung so as to be rotatable in the front-rear direction and has substantially the same length as the connecting link (22). The counterweight 24 is configured such that eight counterweight elements 25 can be bent by a connecting piece 26 around the connecting piece 26 and correspond to the connecting fitting 20 and the seven second link pieces 22b. It is composed of many joints. As shown in FIG. 14, the counterweight element 25 has a groove 14a of the gold wheel 14 on the front side.
It has a concave portion 25a which can be fitted with the connecting link 22 on the rear side. Also pin 1
The uppermost counterweight element 25, which is connected to the attitude control connector 8 and the connecting fitting 20 by means of 9, has a cutout portion 25b to which the rear half of the rearmost connector element 12 is joined, on the front side of the upper end portion thereof. The cutout portion 25b restricts rotation from the suspended state to the front side.

Further, the counterweight element 25, as shown in FIG.
The inner edge at the rear end is chamfered, and further the outer surface of the counterweight 24 and the recess 25a of the counterweight element 25 are provided.
As shown in FIGS. 12 and 14, the bottom surface of the is covered with an elastic body 27 such as rubber.

Further, the posture controlling connector 8 constituting the first connecting body 4 is formed by removing the three connector elements 9 to 11 at the front end thereof, and has a configuration substantially similar to that of the first connecting body 4. The second connecting body 5 is connected to the connector element 28 at the front end thereof so as to be vertically rotatable by the screw pin 29 so as to hold the latter half of the first link piece 22a located at the rearmost end of the first connecting body 4. ing. Further, at the rear end of the connecting link of the second connecting body 5, there is provided a retracting metal fitting 30 for holding the electric wire 2 to be installed.

The wire connecting tool 3 configured to connect the messenger wire 1 and the erected electric wire 2 and prevent the electric wire 2 from untwisting is configured by the first connecting body 4 and the second connecting body 5 configured as described above. Has been done.

Next, the operation when the wire drawing tool 3 configured as described above passes through the gold wheel 14 suspended from the angle steel tower will be described.

Now, as shown in FIG. 6, when the wire drawing tool 3 moves in the traveling direction P and approaches the gold wheel 14 suspended from the angle tower, as described above, the messenger wire 1
Is mounted on the gold wheel 14 at a predetermined angle in the horizontal plane, and thus the suspended gold wheel 14 is tilted with respect to the counterweight 24 as shown in FIG.

From this state, when the wire drawing tool 3 moves forward, the retaining metal fitting 6 enters in an inclined state with respect to the groove 14a of the gold wheel 14 as shown in FIG. 15
The first and second connector elements 9 and 10 that compose the
It will enter the groove 14a of 14 in an inclined state.
Since both connector elements 9 and 10 have a shape that bulges in the left-right direction with respect to the traveling direction P of the messenger wire 1, the bulged connector elements 9 and 10 rotate to lead the connector. 15 attitude controls are performed.

That is, as shown by the chain double-dashed line in FIG. 4, when the connector element 10 is tilted and becomes unstable without corresponding to the groove 14a of the gold wheel 14, that is, the connector element 10 bulges out on one side. When contacting the groove 14a of the gold wheel 14 with the portion 10c as a fulcrum, the tension F1 of the messenger wire 1 applied to the connector element 10 is applied.
By the action of the resultant force F0 of the tension F2 of the wire 2 and the tension F2 of the electric wire 2, a turning force as indicated by an arrow X is applied to the connector element 10. As a result, as shown by the solid line in FIG. 4, the connector element 10 fits into the groove 14a of the gold wheel 14 and contacts in a stable state. This pivoting action is similarly performed in the connector element 9 located in front of the connector element 10.
Moreover, since the planar shape of the leading connector 15 composed of both connector elements 9 and 10 is substantially egg-shaped, the connector element 9 and
10 is gradually and smoothly rotated while passing through the groove 14a of the gold wheel 14.

By this, the attitude of the leading connector 15 is controlled, and at the same time, the third connector element 11 following the leading connector 15 is controlled.
However, as shown in FIG. 5, it enters the groove 14a of the gold wheel 14 in a state in which the attitude is controlled.

When the wire drawing tool 3 moves forward from this state and the other connector elements 11 and 12 of the attitude control connector 8 enter the groove 14a of the gold wheel 14, the attitude control is possible only in the vertical direction. While the connector 8 winds around the gold wheel 14, the lower side surface of the connector 8 gradually fits into the groove 14a of the gold wheel 14.

As a result, while the attitude control connector 8 moves to the position shown in FIG. 9, the attitude of the attitude control connector 8 is increased by the winding action of the connector 8 and the matching action of the groove 14a of the gold wheel 14 on the lower surface. The control connector 8 is gradually rotated in the direction of the arrow in FIG. 10, and the counterweight 24 of the first connecting body 4 is also integrally rotated.
It corresponds to the groove 14a of 14. And 5 on the rear end side
When the individual first connector element pieces 16 approach the gold wheel 14, the groove 14a of the gold wheel 14 and the counterweight 24 correspond to each other. The attitude control action by the attitude control connector 8 becomes more reliable because the attitude control direction is already determined by the leading connector 15 at the front end portion thereof as described above.

Then, when the wire drawing tool 3 moves further forward, the 11th, 12th
As shown in the figure, the counterweight 24 rides on the groove 14a of the gold wheel 14 while rotating rearward about 19 as a center. At this time, since the front side surface of the counterweight 24 that can be bent is covered with the elastic body 27 such as rubber,
The collision with 14 is alleviated, and the rattling in the left-right direction is reduced, and the metal wheel 14 smoothly rides in the groove 14a.
Therefore, the gold weight 14 is hardly pulled forward by the counterweight 24 moving forward, so that when the gold wheel 14 returns to the original suspended state, the second connecting body 5
It does not collide with the counter weight of.

Further, since the front side of the counterweight 24 is formed so as to fit into the groove 14a of the gold wheel 14, the relative movement of the gold wheel 14 from the attitude control connector 8 to the counterweight 24 is smoothly performed. Further, the connecting fitting 20 and the second link piece 22b,
Since the counterweight element 25 is just fitted, the connecting link 22 and the counterweight 24 as a whole are wound around the gold wheel 14 and are easily bent, so that the attitude control action is more reliable. To be done.

When the wire drawing tool 3 moves further forward, the counterweight 24 is fitted on the connecting link 22 and moves on the gold wheel 14 as shown in FIGS. In this state, the counterweight of the second connector 5 prevents the electric wire 2 from being untwisted.

In addition, both edges of the lower end of the connecting link 22 and the counterweight 24
Since the inner edge portion of C is chamfered, the connection link 22 and the counterweight 24 can be fitted smoothly.

When the wire drawing tool 3 moves further forward, the counterweight 24 passes through the gold wheel 14 and pivots downwards around the pin 19, and the curved counterweight 24 is restored by the elastic body 27. Straightened and hung again.

Then, when the wire drawing tool 3 moves further forward, the second connecting body 5 passes over the gold wheel 14, but this action is the same as when the first connecting body 4 passes through the gold wheel 14, The counterweight of the first connecting body 4 is prevented by the counterweight of the second connecting body 5 while the electric wire 2 is prevented from untwisting while the counterweight is passing over the gold wheel 14.
Done by 24.

In addition, in the above description, the case where the electric wire 2 is extended from the angle steel tower in both directions with a slight downward slope is described, but in the case where the electric wire 2 is extended from the angle steel tower in both directions with an upward slope. However, the wire drawing tool 3 performs the same attitude control action as described above, and also prevents the wire 2 from untwisting.

As described above, the wire drawing tool 3 of this embodiment is provided with the attitude control connector 8 including the plurality of connector elements 9 to 12 connected in series, and the attitude control connector 8 is the gold wheel 14.
The counterweight 24 fits well in the groove 14a of the
The posture control action can be surely performed so as to correspond to the groove 14a of the wheel 14 and the counterweight 24 can smoothly pass without colliding with the gold wheel 14 to prevent the gold wheel 14 and the counterweight 24 from being damaged. In addition, the untwisting of the electric wire 2 to be installed can be reliably prevented. Moreover, the leading connector 15 provided at the front end portion of the attitude control connector 8 can perform the attitude control at an early stage, and the attitude control direction of the attitude control connector 8 can be quickly determined.
The posture control action as described above can be performed quickly, smoothly, and more reliably.

The present invention is not limited to the above embodiment,
A part of the configuration may be modified as appropriate without departing from the spirit of the invention, and the present invention may be implemented as follows.

(1) In the above embodiment, the two connector elements 9 at the front end are
The bulging portions 9c, 9d, 10c, 10d are provided in each of 10 to form a substantially egg-shaped plane, but a plurality of connector elements 31 having the same shape as the connector element 11 as shown in FIG. And the hemispherical bulge portions 31a may be provided on both left and right sides of the connector element 31 at the front end thereof.

(2) In the above embodiment, the wire drawing tool 3 having the attitude control connector 8 formed so as to gradually expand in the direction opposite to the traveling direction P of the messenger wire 1 is embodied. As shown, the link piece 33 located at the front end of the wire drawing tool provided with a series of connecting links 32 and a counterweight 24 that does not gradually expand in the direction opposite to the traveling direction P of the messenger wire 1 A shape that bulges in the direction, or as shown in FIG. 17, is provided with a "-shaped" direction correction link 34 for attitude control, which is connected to a position on the front side of the counterweight 24, at the front end thereof. Attach the link piece 35 that has a shape that swells in the left-right direction to the messenger wire 1
It is provided so as to articulate to the retracting metal fitting 6 connected to the messenger wire, or as shown in FIG. Attach the adapter 37 made of hard rubber, etc., which is formed so that it gradually expands.
Link piece 38 that has a shape that bulges in the left-right direction to the front side
May be provided.

(3) In the above-mentioned embodiment, the first piece and the second piece following the retractable metal fitting 6
The connector elements 9 and 10 of the third are shaped to have the bulges 9c, 9d, 10c and 10d, but some of the connector elements 11 from the third to the tenth may be shaped to have the bulges. Good.

(4) In the above embodiment, both connector elements 9 and 10 have a substantially rhombic cross section, but they may have an elliptical cross section.

(5) In the above embodiment, the attitude control connector 8 of the first connecting body 4 is composed of 19 connector elements 9 to 12, but the attitude control connector may be composed of other number of connector elements. Good.

(6) In the above embodiment, the wire drawing tool 3 is composed of the two connecting bodies 4 and 5, but the wire drawing tool may be composed of one or three or more connecting bodies.

(7) In the above embodiment, a plurality of counterweight elements 25
Although the counterweight 24 is formed by the above, the counterweight may be integrally formed.

[Effect of the Invention] As described in detail above, according to the present invention, when the wire drawing tool passes through the tilted wheel, when the link at the front end portion of the connecting links passes, the left-right direction A turning force is applied to the wheel, and the turning force can be used to quickly determine the attitude control direction when passing through the gold wheel, and the excellent effect that the attitude control action can be performed quickly and more reliably.

[Brief description of drawings]

1 to 14 are drawings showing an embodiment of the present invention, in which FIG. 1 is a plan view showing a leading connector and the like provided at the front end of a wire drawing tool, and FIG. FIG. 3 is a perspective view showing the leading connector and the like, FIG. 3 is a sectional view taken along the line AA of FIG.
4 is a sectional view taken along line BB of FIG. 1, and FIG. 5 is C of FIG.
6 is a side view showing the entire wire drawing tool, FIG. 7 is a partially enlarged plan view of the wire drawing tool, and FIG.
Fig. 9 is a sectional view taken along the line D-D of Fig. 9, Fig. 9 is a partial side view showing a state in which the attitude control connector passes through the gold wheel, Fig. 10 is an enlarged sectional view taken along line EE of Fig. 9, and Fig. 11 is Figure 12 is a partial side view showing the state in which the counterweight has begun to ride on the gold wheel.
FIG. 13 is an enlarged cross-sectional view taken along the line FF of FIG. 6, FIG. 13 is a partial side view showing a state in which the counterweight passes through the gold wheel, and FIG. 14 is an enlarged cross-sectional view taken along the line GG of FIG. FIG. 15 is a plan view showing a front end portion of a wire drawing tool in another embodiment embodying the present invention, and FIGS. 16 to 18 are partially cutaway side views showing the wire drawing tool in another embodiment. is there. In the figure, 1 is a messenger wire, 2 is an electric wire, 8 is an attitude control connector that constitutes a connecting link, 9, 10 and 31 are connector elements, 9c, 9d, 10c, 10d and 31a are bulging parts, and 22 is a connection. The link, 24 is a counterweight, 33, 35, 38 are link pieces having a shape that bulges in the left-right direction, and P is the traveling direction.

Claims (1)

[Claims] 1. A wire drawing tool provided with a connecting link for connecting a messenger wire and an erected electric wire, which can be bent in the vertical direction, and provided with a counterweight for preventing untwisting of the electric wire. Of the connecting link located on the front side of the counterweight with respect to the traveling direction of the messenger wire, the link at the front end is swollen in the left-right direction more than in the up-down direction in the traveling direction of the messenger wire. A wire drawing tool characterized by having a shape with a larger amount.