JPS6217929B2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a wire extending tool used to extend an electric wire through a steel wheel attached to a steel tower, and more specifically, it relates to a wire extending tool used to connect a messenger wire and an electric wire to be installed. The present invention also relates to a wire drawing tool that prevents untwisting of electric wires.

Generally, as shown in FIG. 1, the electric wire 1 passes through the steel towers 2, 3 in both directions from the steel towers 2, 3 at a downward slope or an upward slope. When the electric wire 1 is extended through a steel tower 2 that slopes down in both directions, the electric wire 1 passes through a metal wheel 6 suspended from the steel tower 2.

Conventionally, as shown in FIG. 2, a wire drawing tool used in such a case has a wire extending tool that is attached to the front of the middle part of the bendable connecting yoke 5 that connects the messenger wire 4 and the electric wire 1. A bendable counterweight 7 for preventing untwisting of electric wires is connected so as to be rotatable in the front-rear direction, and the side thereof is formed to fit into the groove of the metal wheel 6, and the rear side is formed so that the connecting yoke 5 can be fitted therein. I found something that was configured. However, when extending the line by passing through the metal wheel 6 suspended from the angle steel tower 2 (the steel tower at the position where the direction of the electric line changes), the messenger wire 4 is attached to the metal wheel 6 at an angle in the horizontal plane. As the wire drawing tool 6 is placed on the slanted metal wheel 6, it is inevitably tilted as shown in FIG. There was a defect in that the hanging counterweight 7 collided with the flange of the metal wheel 6, damaging the metal wheel 6 and also damaging the counterweight 7 itself.

In order to eliminate the above-mentioned defect, as shown in FIG. A pair of direction adjustment links 8 are rotatably articulated, and a counterweight 7 is suspended from the vicinity of the joint between the connecting yoke 5 and the direction adjustment link 8 so as to be rotatable in the front and back direction. A line tool was proposed. However, in this wire drawing tool, when the direction correction link 8, which fits into the groove of the metal wheel 6 and moves forward from this state, it pulls the metal wheel 6 forward, and the direction correction link 8 moves forward from the metal wheel. 6
At the same time, the metal wheel 6, which had been pulled forward and moved, returns to the rear, and as a result, the metal wheel 6 and the counterweight 7 collide (the metal wheel 6 is suspended according to the length of the insulator). Since the distance is about 2 to 7 meters, the impact force of the metal wheel 6 due to rotation is extremely large.

Furthermore, conventionally, as shown in FIG.
On the other hand, an adapter 9 made of an elastic material such as hard rubber whose lower surface gradually expands toward the rear so as to fit into the groove of the metal wheel 6 is placed in front of the joint between the connecting yoke 5 and the counterweight 7. An attached wire drawing tool has been proposed, but since the adapter 9 does not have sufficient bendability, it cannot fit snugly into the groove of the metal wheel 6. The posture control action that makes the counterweight 7 correspond to the groove is also insufficient, and in this improperly fitted state, there is a risk that unnatural force will locally act on the adapter 9 and damage the adapter 9. It was hot.

Furthermore, in wire drawing tools that use the conventional adapter 9, there is a risk that the connecting yoke 5 and the adapter 9 may rotate relative to each other, and as a result, even if the adapter 9 is temporarily engaged with the groove of the metal wheel 6, the connecting yoke 5 moved, the counterweight 7 did not correspond to the groove of the metal wheel 6, and there was a risk that the attitude control effect would be further deteriorated.

In addition, in order to reliably prevent the electric wire 1 from untwisting,
A wire drawing tool in which two counterweights 7 are hung apart from each other has a drawback that the wire drawing tool becomes longer and heavier, making it inconvenient to handle. Furthermore, when the front counterweight 7 passes the metal wheel 6, the counterweight 7 pulls the metal wheel 6 forward, and at the same time as the counterweight 7 passes the metal wheel 6, the metal wheel that was moving forward There was a defect in that the metal wheel 6 returned to the rear, and as a result, the metal wheel 6 and the rear counterweight collided, causing damage to the metal wheel 6 and the counterweight. When the two counterweights are suspended, in order to prevent the metal wheel 6 from colliding with the rear counterweight, if the two counterweights are further spaced apart, the wire drawing tool as a whole becomes even longer and weighs less. The disadvantages were that it was heavy, inconvenient to handle, and also expensive.

Now, as described above, the electric wire 1 may rise in both directions from the steel tower 3 and pass through the steel tower 3 in an inclined state. When the electric wire 1 is extended in both directions passing through a steel tower 3 with an upward slope, the electric wire 1 is pulled downward by a pair of upper and lower metal wheels 1, as shown in FIGS. 1 and 6.
0 (hereinafter referred to as the gold car), the upper gold car 10a
It passes while touching the bottom side of. In addition, the lower car 10
b is for guiding the counterweight. However, when the wire is to be extended through the steel tower 3, any of the conventional wire drawing tools described above is unsuitable for use. This is because the conventional wire drawing tool shown in FIG.
There is no function to control the posture of the inclination of the counterweight 7 due to the untwisting force, and therefore, the counterweight 7 does not correspond to the groove of the lower metal wheel 10b and collides with the flange of the lower metal wheel 10b. When the wire drawing tool shown in FIG. 4 passes over the metal wheel 6, its attitude is controlled for the time being.
It is clear that the structure is not designed to control the posture and pass through the lower side of a. Further, in the wire drawing tool shown in FIG. 5, only the lower surface of the adapter 9 is formed to fit into the groove of the metal wheel.
The structure is not such that it passes under the 0 metal wheel 10a while controlling its posture.

The present invention has been made in consideration of the above-mentioned deficiencies, and its purpose is to provide a first counterweight located in front of a counterweight that fits into the grooves of the connecting yoke and the metal wheel.
The attitude control connector is constructed by connecting a plurality of connector elements in series so that they can be bent in the vertical direction, and the lower and upper surfaces of the attitude control connector are formed so that they gradually fit into the grooves of the metal wheel. Furthermore, by connecting a second attitude control connector that is substantially similar to the first attitude control connector in the opposite direction to the rear end of the connection yoke, the first attitude control connector can be connected in any case of wire extension. As the attitude control connector passes through the metal wheel, it fully fits into the groove of the metal wheel, ensuring the attitude control action so that the counterweight corresponds to the groove of the metal wheel, and as a result, the metal wheel and counterweight collide. It can pass through the wire wheel smoothly without twisting, preventing damage to the wire wheel and counterweight, and is easier to handle than conventional wire drawing tools. To provide a wire drawing tool which surely prevents return and is cheaper than a wire drawing tool in which two counterweights are suspended.

Examples 7 to 2 which embody the present invention will be described below.
To explain based on FIG. 2, reference numeral 11 is a posture control connector connected to the rear part of the retaining member 13 for retaining the messenger wire 12 so as to be rotatable in the vertical direction by means of a screw pin 14. The ten connector elements 15 located on the front side and formed integrally with each other, and the nine connector elements 16 located on the rear side and assembled and formed, respectively, are connected to the screw pin 17.
It is constructed by connecting in series. Each of the nine connector elements 16 is formed by screwing together a lower first connector element piece 18 and an upper second connector element piece 19 using a pair of screws 20. Ten
The rear half of each of the nine connector elements 15 and the nine first connector element pieces 18 has convex portions 15a and 18a that are flat in the vertical direction, and the front half has a convex portion 15a of the connector element 15 immediately before or the first connector element piece. 18
It has recesses 15b, 18b into which the projection 18a is inserted, and the projections 15a, 18a and the recesses 15b, 18b.
At the engagement position with the screw pin 17, the screw pin 17 is connected to the screw pin 17 so as to be rotatable in the vertical direction. Further, the second connector element piece 19 is fixed to the upper surface of the front half of the first connector element piece 18, and a recess 19a corresponding to the recess 18b of the element piece 18 is provided on the front surface. In the posture control connector 11, which is configured to be able to be bent in the vertical direction as a whole, the third connector elements 15 from the front are formed to have the same shape and the same size, and the fourth to fourteenth connector elements 15 are formed to have the same shape and size. The lower and upper surfaces of the elements 15 and 16 gradually expand to fit into the grooves of the metal wheel 21, and the lower and upper surfaces of the 15th to last connector elements 16 just fit into the grooves of the metal wheel 21. shaped to fit.

Reference numeral 22 denotes a connecting fitting which is articulated to the convex portion 18a of the rearmost connector element 16 of the attitude control connector 11 by a pin 23 so as to be rotatable in the vertical direction about the pin 23, and 24 is the connecting fitting 22. A connecting yoke that is articulated to the rear part of the yoke by a screw pin 25 so as to be able to rotate vertically about the pin 25, and includes eight flat first yoke pieces 24a.
and seven second yoke pieces 24b, which are plate-shaped and have recesses at both ends into which the first yoke pieces 24a are inserted, are alternately and rotatably connected by screw pins 26. As shown in FIG. 15, the first yoke piece 24b has both lower end edges chamfered.

27 is the posture control connector 11 and the connecting fitting 22
The connecting fitting 22 is connected by the pin 23 that connects the
The counterweight is articulated and suspended so as to be rotatable in the front-rear direction so as to sandwich the front end of the counterweight, and has approximately the same length as the connecting yoke 24. Eight counterweight elements 28 are connected together by connecting pieces 29. Connecting piece 2
They are configured such that they can be bent with each other around 9 and are articulated so as to correspond to the connecting fitting 22 and the seven second yoke pieces 24b. The front side of the counterweight element 28 is formed to match the cross-sectional shape of the groove of the metal wheel 21, and the rear side is formed with a connecting yoke 2.
It has a concave portion 28a (see FIGS. 13 and 15) into which 4 can be inserted. Further, the counterweight element 28, which is connected to the posture control connector 11 and the connecting fitting 22 by the pin 23, has a notch 28b (first 7), and this notch 28b prevents it from rotating forward from its suspended state.

Further, as shown in FIG. 8, the counterweight element 28 has a chamfered inner edge at its rear end.
Furthermore, the outer surface of the counterweight 27 and the bottom surface of the recess 28a of the counterweight element 28 are the first
As shown in Figures 3 and 15, it is covered with an elastic body 30 such as rubber.

Reference numeral 31 denotes a second posture control connector connected to the rear end of the connecting yoke 24 so as to be able to rotate up and down, and is connected to the first yoke piece 2 at the rear end of the connecting yoke 24.
4a so as to sandwich the first yoke piece 24a, and a connector element 32 that fits into the groove of the metal wheel 21;
It consists of a group of connector elements in which attitude control connectors 11 are arranged in opposite directions. Connector element 32
is assembled into a first connector element piece 32a and a second connector element piece 32b so as to be separable. The lower and upper surfaces of the front end of the second attitude control connector 31 fit into the grooves of the metal wheel, and gradually contract toward the rear end. Further, an electric wire retaining member 34 similar to the retaining member 13 for retaining the messenger wire 12 is connected to the rear end of the second attitude control connector 31,
The electric wire 35 to be constructed is held in place by the holding member 34.

A pair of attitude control connectors 11 and 3
1. The connecting yoke 24 and the counterweight 27 constitute a wire stretching tool 36 that connects the messenger wire 12 and the electric wire 35 to be constructed and prevents the electric wire 35 from untwisting.

Next, in the embodiment configured as described above,
Metal wheel 21 with wire drawing tool 36 suspended from the angle steel tower
Explain the action when passing above.

Now, as shown in FIG. 7, the wire drawing tool 36 moves in the direction of arrow P and the metal wheel 2 is suspended from the angle steel tower.
1, as mentioned above, the messenger wire 12 is placed on the metal wheel 21 at an angle within the horizontal plane, so that the suspended metal wheel 21 is shown in FIG. As shown, it is inclined with respect to the counterweight 27. When the wire drawing tool 36 moves forward and the first attitude control connector 11 enters the groove of the metal wheel 21, the first attitude control connector 11, which can be bent only in the vertical direction, wraps around the metal wheel 21 while wrapping around the metal wheel 21. , the lower surface of the connector 11 gradually fits into the groove of the metal wheel 21. As a result, while the first attitude control connector 11 moves to the position shown in FIG. As the connector 11 is gradually rotated in the direction of the arrow in FIG. 11, the counterweight 27 is also rotated integrally.
7 corresponds to the groove of the metal wheel 21. When the five first connector element pieces 18 on the rear end side approach the metal wheel 21, the grooves of the metal wheel 21 and the counterweight 27 exactly correspond to each other.

When the wire drawing tool 36 moves further forward, the first
As shown in Figures 2 and 13, the counterweight 27
rotates backward around the pin 23 and rides on the groove of the metal wheel 21. At this time, since the bendable counterweight 27 is covered with an elastic body 30 such as rubber, the collision with the metal wheel 21 is alleviated, and the rattling in the left and right direction is reduced. It rides smoothly on the groove. Also, the front side of the counterweight 27 is the gold wheel 21.
Since it is formed to fit the groove of the first
Attitude control connector 11 to counterweight 2
The relative transition of the gold wheel 21 to 7 occurs smoothly.

When the wire drawing tool 36 moves further forward, the counterweight 27 is connected to the lower surface of the second posture control connector 31 with almost no gap between the counterweight 27 and the front surface of the counterweight 27, as shown in FIGS. 14 and 15. It is fitted into the yoke 24 and moves on the metal wheel 21. Even in this state, the counterweight 27
Since the lower surface of the wire fits tightly into the groove of the metal wheel 21, untwisting of the wire 35 is prevented. In addition,
Since both lower end edges of the connection yoke 24 and the inner edge of the counterweight 27 are chamfered, the connection yoke 24 and the counterweight 27 can be fitted smoothly.

When the wire drawing tool 36 moves further forward, the metal wheel 21 smoothly moves relatively from the counterweight 27 to the second attitude control connector 31, and at the same time the counterweight 27 rotates downward around the pin 23, As shown in FIG. 16, the curved counterweight 27 becomes straight due to the restoring force of the elastic body 30 and is suspended again, but the counterweight 27 is suspended in the vertical direction to prevent wire twisting to the maximum. Until it is lowered, the lower side surface of the front end of the second attitude control connector 31 fits tightly into the groove of the metal wheel 21 to reliably prevent the wires 35 from untwisting.

Furthermore, as the second posture control connector 31 moves forward from the position shown in FIG. 16, the connector 31 is gradually rotated in the direction opposite to the arrow direction in FIG. It is rotated and suspended vertically.

Next, when the electric wire is extended from the angle tower in both directions at an upward slope, the action when the wire extension tool 36 passes through the pair wheel will be explained.

Now, as shown in FIG. 17, when the wire drawing tool 36 approaches the pair wheel 37, the wire wire 12 contacts the lower side of the upper metal wheel 37a at an angle in the horizontal plane. Since they are in contact with each other, the counterweight wheel 37 is inclined with respect to the counterweight 27. When the wire drawing tool 36 moves forward and the first posture control connector 11 enters the groove of the upper metal wheel 37a, the connector 11 wraps around the upper metal wheel 37a and
The upper surface of the connector 11 gradually fits into the groove of the upper metal wheel 37a. As a result, while the first attitude control connector 11 moves to the position shown in FIG. 18, due to the winding action of the connector 11 on the upper metal wheel 37a and the adapting action on the upper metal wheel 37a on the upper side, As the connector 11 is gradually rotated in the direction of the arrow in FIG. 19, the counterweight 27 is also rotated integrally, so that the counterweight 27 comes to correspond to the groove of the lower metal wheel 37b. Then, when the five second connector element pieces 19 on the rear end side come under the upper metal wheel 37a, the grooves of the lower metal wheel 37b exactly correspond to the counterweight 27.

When the wire drawing tool 36 moves further forward, the second
0,21 As shown in the figure, the counterweight 27
rotates backward around the pin 23 and rides on the groove of the lower metal wheel 37b. And wire drawing tool 3
6 moves forward, the connecting yoke 24 is guided by the groove of the upper metal wheel 37a, and the counterweight 27 moves forward, as shown in FIG.
guided by the groove b. In this state,
Since the connecting yoke 24 wraps around the upper metal wheel 37a and the counterweight 27 fits tightly into the groove of the lower metal wheel 37b, untwisting of the electric wires 35 is reliably prevented.

When the wire drawing tool 36 moves further forward, the upper metal wheel 37a moves relatively from the connecting yoke 24 to the second posture control connector 31, and at the same time the counterweight 27 passes the lower metal wheel 37b and moves around the pin 23. Rotate downward. Until the counterweight 27 suspends the wires in a vertical direction that prevents untwisting of the wires to the maximum, the upper surface of the front end of the second posture control connector 31 fits tightly into the groove of the upper metal wheel 37a, and the wires 35 It reliably prevents untwisting.

The present invention provides a connection yoke 24 and a first attitude control connector 11 located in front of the counterweight 27.
is formed by connecting a plurality of connector elements 15 and 16 in series so that they can be bent in the vertical direction, and the lower and upper surfaces of the attitude control connector 11 are formed so that they gradually fit into the grooves of the metal wheel. Furthermore, by forming the counterweight 27 so that its front side fits into the groove of the metal wheel, the first attitude control connector 11 can fully fit into the groove of the metal wheel in any case of wire extension. The posture control action can be reliably performed so that the counterweight 27 corresponds to the groove of the metal wheel, and as a result, the counterweight 27 passes smoothly over the metal wheel, and damage to the metal wheel and the counterweight 27 is prevented.

In addition, the present invention connects a second attitude control connector 31, which is substantially similar to the first attitude control connector 11, to the rear end of the connection yoke 24 in the opposite direction to the first attitude control connector 11, so that the counterweight 27 is made of metal. Untwisting of the electric wires 35 can be reliably prevented even during and immediately after passing a car.

Furthermore, the present invention is shorter and lighter in weight than a wire drawing tool of conventional construction in which two counterweights are suspended, making it easier to handle and cheaper.

Further, in the present invention, the counterweight 27
Since only one counterweight is suspended, the problem of the metal wheel colliding with the rear counterweight and damaging the metal wheel and counterweight when two counterweights are suspended has been completely eliminated. .

Further, in the embodiment of the present invention, each connector element 16 on the rear side of the first attitude control connector 11 is connected to the first connector element piece 18 and the second connector element piece 1.
9, and similarly, the second
Since each connector element 32 on the front side of the attitude control connector 31 is assembled and formed in a separable manner, when the wire is drawn simply by passing the wire drawing tool 36 over the metal wheel 21, the second connector element piece 19 can be removed and used, which is convenient for handling the wire drawing tool.

Note that by forming the upper surface of the connecting yoke 24 to fit the groove of the metal wheel and eliminating the upper step between both attitude control connectors and the connecting yoke 24, the upper metal wheel 37a can be used as the attitude control connector. It may also be possible to smoothly transition between the connecting yoke and the connecting yoke.

Note that the present invention is not limited to the above-mentioned embodiments; for example, all the connector elements constituting the first and second attitude control connectors 11 and 31 may be integrally formed, or the number of connector elements may be changed as appropriate. , the counterweight 27 may be integrally formed, etc., and other modifications may be made without departing from the spirit of the present invention.

As detailed above, the wire drawing tool of the present invention reliably performs attitude control so that the counterweight corresponds to the groove of the metal wheel in any wire drawing, and as a result, the metal wheel and counterweight collide. It can pass through the wire wheel smoothly without causing damage to the wire wheel and counterweight, and it is easier to handle than conventional wire drawing tools. This invention is excellent for industrial use as a wire drawing tool because it reliably prevents untwisting of the wires and is less expensive than a wire drawing tool in which two counterweights are suspended.

[Brief explanation of the drawing]

Fig. 1 is a schematic diagram showing the electric wire installation state, Fig. 2 is a side view showing a conventional wire drawing tool, Fig. 3 is a rear view, and Figs. 4 and 5 are side views showing different examples of the conventional wire drawing tool. 6 is a side view showing a wire extension method using a pair of metal wheels, FIG. 7 is a side view showing an embodiment embodying the present invention, FIG. 8 is a partially enlarged plan view, and FIG. The figure is a sectional view taken along the line A-A in Figure 7, and Figure 10 is a cross-sectional view taken along line AA in Figure 7.
A partial side view showing the attitude control connector passing through the metal wheel, Figure 11 is an enlarged sectional view taken along the line B-B in Figure 10, and Figure 12 is a portion showing the state where the counterweight has started to ride on the metal wheel. A side view, FIG. 13 is an enlarged sectional view taken along the line CC in FIG. 12, FIG. 14 is a partial side view showing the state in which the counterweight passes over the metal wheel, and FIG. 15 is a D-D in FIG. 14. 16 is a partial side view showing the state in which the second posture control connector has begun to pass through the metal wheel; FIG. 17 is a front view showing the state in which it is approaching the metal wheel; FIG. 18
The figure is a partial side view showing the state in which the first attitude control connector passes through the pair wheel, and Figure 19 is E of Figure 18.
- An enlarged sectional view taken along the line E, Fig. 20 is a partial side view showing the state in which the counterweight has started to ride on the lower metal wheel, Fig. 21 is an enlarged sectional view taken along the line FF of Fig. 20,
FIG. 22 is a partial side view showing the state in which the counterweight passes over the lower metal wheel. First attitude control connector 11, messenger wire 12, connector elements 15, 16, 32, 3
3, first connector element piece 18, second connector element piece 19, metal wheel 21, pin 23, connection yoke 24,
Counterweight 27, second attitude control connector 31, electric wire 35, wire drawing tool 36, and pair wheel 37.

Claims (1)

[Claims] 1. A wire drawing tool that connects a messenger wire and an electric wire to be installed and prevents untwisting of the electric wire, in which a plurality of connector elements can be connected in series and bent in the vertical direction. The first attitude control connector is configured such that as the first attitude control connector moves along the metal wheel, the lower and upper surfaces of the connector gradually conform to the groove shape of the metal wheel. , the first attitude control connector is formed so as to gradually expand toward the opposite side of the moving direction of the messenger wire, and the connection yoke as a connection member is vertically connected to the rear end of the first attitude control connector. furthermore, the front side fits into the groove of the metal wheel and the rear side fits the connecting yoke at or near the connecting portion of the first attitude control connector and the connecting yoke. A counterweight for preventing untwisting of electric wires, which can be mounted on the wires, is articulated and suspended so as to be rotatable in the front-back direction, and the first
A wire drawing tool characterized in that a second attitude control connector, which is substantially similar to the attitude control connector, is articulated in a direction opposite to the attitude control connector so as to be rotatable in the vertical direction. 2. The wire drawing tool according to claim 1, wherein the first and second attitude control connectors are constructed by connecting a plurality of connector elements in series with screw pins. 3. The wire drawing tool according to claim 2, wherein at least the rearmost connector element of the first attitude control connector has a lower surface and an upper surface substantially the same shape as the front surface of the counterweight. 4. The connector element forming the front side of the first posture control connector is integrally formed, and the connector element forming the rear side is connected to the first connector element piece forming the lower surface that engages with the groove of the metal wheel; The wire drawing tool according to claim 3, wherein the wire drawing tool is separably assembled with a second connector element piece forming an upper surface that engages with a groove of a metal wheel. 5. The wire drawing tool according to claim 3, wherein the connector element is integrally formed. 6. The wire drawing tool according to claim 1, wherein the connecting yoke is constructed by connecting a plurality of connecting yoke elements that can be bent up and down using screw pins. 7. The wire drawing tool according to claim 1, wherein the counterweight is configured by connecting a plurality of counterweight elements so as to be bendable back and forth. 8. The wire drawing tool according to claim 1, wherein the first attitude control connector, the connection yoke, and the counterweight are connected to each other by one pin.