JP4314485B2 - Electric wire replacement device - Google Patents

Description

  In the present invention, when an existing electric wire (transmission line) installed between a plurality of steel towers is replaced with a new electric wire Q, the collision of electric wires (or gold wheels, ropes, etc.) between each other is ensured. In the process in which the new electric wire Q having the clamp portion S at the front end passes through the gold wheel located on the lower side, the gold wheel and the new electric wire Q are in strong contact with the gold wheel. It eliminates the occurrence of strong pressing force in the traveling direction, and when the clamp part S of the newly installed electric wire Q passes through the gold wheel located on the lower side, the existing electric wire P on which the gold wheel located on the upper side is mounted. A downward pulling force is generated, and then the clamp part S passes through the gold wheel to eliminate the jumping of the existing electric wire P due to the release of the pulling force, and a new electric wire Q or a gold wheel that passes through the gold wheel is mounted. To prevent the occurrence of damage to the existing electric wire P It relates wire Chokawa device.

  Conventionally, the thing of various structures is proposed as an electric wire replacement apparatus used for the replacement work of an electric wire (transmission line).

  For example, as shown in FIG. 8, knots 106 are formed by taping at both ends of a connecting rope 100 having a stop 103 of the coasting rope R in the center, and a substantially O-shaped carabiner fitting 101 is connected to each knot 106. In addition, there is an electric wire replacement device in which gold wheels 102A and 102B for hanging electric wires (power transmission lines) are connected. This electric wire changing apparatus is formed in a length of about 1.5 m to 5 m as a whole.

  The anchor 103 of the coasting rope R used in this electric wire spanning device is disposed at the center of the connecting rope 100 and has a rod 107 provided with a groove portion 104 for inserting the coasting rope R formed in a skewed manner on the side surface. And a cylindrical body 105 screwed along the rod 107 so as to close and open the groove 104. When connecting the coasting rope R to the groove portion 104 of the rod 107, the cylindrical body 105 is rotated to open the groove portion 104 of the rod 107, and after inserting the coasting rope R into the groove portion 104, the open end of the groove portion 104 is opened. The cylindrical body 105 is rotated in the direction of closing.

  By arranging the wire repositioning device configured as described above at intervals of about 20 m to 30 m along the wires (power transmission lines) between the steel towers, the wire reshaping work is performed. For example, as shown in FIG. 9, in order to arrange and deploy the wire replacement device along the existing electric wire P, the coasting rope R is connected to the groove portion 104 of each wire replacement device, and the upper gold wheel 102A is installed. Attach to the electric wire P.

  Further, a rope for replacement is passed through the lower gold wheel 102B, the wire W is connected, and the rope is wound up. And the newly established electric wire Q is connected to the wire W via the clamp part S, and the wire W is wound up.

  Then, the existing electric wire P is relaxed and the new electric wire Q is tensioned, so that the electric wire is replaced by reversing the upper and lower sides.

  In addition to this, as an electric wire replacement device used for electric wire (transmission line) replacement work, for example, as disclosed in Patent Document 1, a gold wheel (large) 102A and a gold wheel (small) 102Aa is arranged on the frame body 201A, similarly, the gold wheel (large) 102B and the gold wheel (small) 102Bb are arranged on the frame body 201B, and the upper frame body 201A and the lower frame body 201B are connected to each other via the connection fitting 108. Have been proposed to be integrated together.

Moreover, as disclosed in Patent Document 2, an upper frame body in which a gold wheel is disposed and a lower frame body in which a gold wheel is disposed are integrally connected via a metallic annular portion. Proposed.
JP-A-6-225420 JP 2002-315122 A

  However, since the conventional wire reversing device shown in FIG. 8 is formed to have a total length of about 1.5 m to 5 m with the gold wheels 102A and 102B connected to both ends of the connecting rope 100, The overall weight is increased, and many parts of the structure are manually made. Therefore, workability is poor, and much effort is required to remove the device itself.

  In addition, the transportation cost from the equipment storage location to the construction site is correspondingly high, and the quantity and type of storage are increased, so that the storage location, inspection cost, inspection period, etc. are considerably required.

  In addition, if the wire replacement device shown in FIG. 8 is attached to an electric wire (transmission line), the tension of the electric wire (transmission line) installed between steel towers increases. The force acting on the steel tower needs to be kept within the set allowable strength range. For this reason, it is necessary to carry out the work after relaxing the tension of the existing electric wires P installed between the steel towers before the work.

  As a result, the slack in the air of the new electric wire Q between the steel towers became large, and the situation where the position of the electric wire (transmission line) drooped greatly during the work occurred. Therefore, it becomes more susceptible to the influence of the wind, and when the wind blows, the electric wire (transmission line) shakes greatly, and if there are obstacles or charged parts nearby, there is a possibility that a collision accident or an electric shock accident may occur. It was dangerous. In addition, depending on the strength of the wind, it was necessary to take measures to prevent the electric wire (transmission line) from rolling and to temporarily suspend the work.

  Furthermore, since the wire replacement device shown in FIG. 8 uses the connecting rope 100 having a predetermined length, the connecting rope 100 is made of gold during the work of inverting the existing electric wire P and the new electric wire Q up and down. When such a situation occurs, it is necessary to suspend the work and remove the hooked rope 100 from the gold wheels 102A and 102B. Moreover, the existing electric wire P and the newly installed electric wire Q may cross | intersect, and there existed a possibility that the surface of an electric wire (power transmission line) might be damaged when electric wires (power transmission line) contact.

  On the other hand, the wire replacement device disclosed in Patent Documents 1 and 2 is a new installation with a clamp portion S at the tip, for example, forces in various directions acting on a gold wheel or electric wire (power transmission line) during construction. In the process in which the electric wire Q passes through the gold wheel located on the lower side, the gold wheel and the new electric wire Q are in strong contact with each other and a strong pressing force is generated in the traveling direction of the new electric wire Q against the gold wheel. When the clamp part S of the new electric wire Q passes through the position of the gold wheel, a downward pulling force is generated in the existing electric wire P on which the gold wheel located on the upper side is mounted, and then the clamp part S passes through the gold wheel. Then, the existing electric wire P jumps up due to the release of the pulling force, and there is a risk that the new electric wire Q passing through the gold wheel or the existing electric wire P equipped with the gold wheel may be damaged.

  For example, as shown in FIG. 10 (a), the clamp portion S of the new wire Q reaches the lower gold wheel 102B, and the clamp portion S is moved to the gold wheel while the gold wheel 102B is pushed out in the traveling direction of the new wire Q. Due to the load that rides on 102B, the whole of the electric wire replacement device is inclined. Then, since the load of the clamp part S is concentrated on the gold wheel 102B and the wire replacement device itself is forcibly pulled downward, the existing electric wire P mounted on the gold wheel 102A located on the upper side is moved downward. It will be in the state bent to the side.

  Then, when the entire clamp portion S passes through the gold wheel 102B, as shown in FIG. 10 (b), the gold wheel 102B that has been pushed out in the traveling direction of the newly installed electric wire Q instantaneously returns to the original position, The load on 102B is released, and the wire repositioning device itself bounces upward. After bouncing, the wire repositioning device falls downward. Due to such a bounce phenomenon, the gold wheel 102B and the new electric wire Q passing through the gold wheel 102B collide strongly, so that there is a risk that the new electric wire Q is damaged and the function as the electric wire (transmission line) is lowered. It was.

  Further, as shown in FIG. 10 (b), when the gold wheel 102B instantaneously returns to the original position, the gold wheel 102B and the new electric wire Q collide strongly while being rubbed, so that the new electric wire Q may be damaged. there were. In addition, there is a risk of damaging the existing electric wire P on the upper side where the gold wheel 102A to which a full load is applied is caused by a strong drop impact due to the bounce phenomenon.

  Moreover, also in terms of safety, the actual situation is that such an electric wire replacement device that does not use the connecting rope 100 is not generally used.

  Therefore, the present invention was created in view of the existing circumstances as described above. When replacing an existing electric wire (transmission line) installed between a plurality of steel towers with a new electric wire Q, an electric wire ( In the process in which a new electric wire Q having a clamp portion S at the tip portion passes through a gold wheel located on the lower side is reliably prevented. The car and the new electric wire Q are in strong contact with each other, eliminating the strong pressing force in the direction of travel of the new electric wire Q against the gold wheel, and the clamp part S of the new electric wire Q passes through the lower gold wheel. When a pulling force is generated downward on the existing electric wire P on which the gold wheel located on the upper side is mounted, the clamp portion S passes through the gold wheel and the existing electric wire P jumps up due to the release of the pulling force. Eliminate and install a new electric wire Q or gold car that passes through the gold car And to provide an electric wire Chokawa apparatus reliably prevent the existing wire P which has the occurrence of a situation where damage occurs to.

The present invention is an electric wire replacement device used to replace an existing electric wire installed between a plurality of steel towers with a new electric wire, and is used for attaching an electric wire to both ends of a connecting body via a frame. A gold wheel is attached, and the connecting body is provided with ball-shaped support holes at both ends. A frame that supports the gold wheel by attaching a frame body that supports the gold wheel to the shaft portion of the ball shaft that has a slight gap between the frame body that supports the gold wheel and the connecting body. The above-mentioned problem has been solved by attaching the body so as to be tiltable with respect to the coupling body .

  Moreover, the gold wheel attached to the connection body can be tilted in the front-rear direction of the existing electric wire and the new electric wire, thereby solving the above-described problem.

  Furthermore, since the gold wheel attached to the connecting body is rotatable with respect to the connecting body, the above-described problem has been solved.

  In addition, a frame that supports the gold wheel by providing a hole at the end of the frame, inserting the shaft portion of the ball shaft protruding from the coupling body into the hole of the frame, and screwing a nut into the shaft portion. By attaching the body to the connecting body, the above-mentioned problem was solved.

In addition, the connecting body is provided with a grooved portion for inserting the coasting rope on the peripheral surface, and provided with a stopper with a screw cylinder that closes and opens the grooved portion by changing the screwing height along the connecting body. The problem described above has also been solved.

  Moreover, the groove | channel part which inserts a coasting rope solved the problem mentioned above similarly by being provided in the slanting form in the surrounding surface of the coupling body.

  Furthermore, the electric wire replacement device is formed to have a length of about 40 cm, thereby solving the above-described problem.

  According to the present invention, the distance between the two metal wheels attached to both ends of the connecting body is shortened, thereby realizing a reduction in the size and weight of the wire replacement device, and dramatically improving workability on the steel tower and the ground. ing.

  Specifically, by reducing the weight of the wire replacement device, it is possible to reduce the degree of tension of the electric wires (transmission lines) installed between the steel towers before construction, and to increase the electric wires (transmission lines). It becomes difficult to be affected by the wind that causes rolling. Further, since both the gold wheels are not connected using the connecting rope as in the prior art, the connecting rope is not caught on the gold wheel portion during the upside down operation of the existing electric wire and the new electric wire. In addition, since the distance between the two gold wheels of the wire replacement device is short, the existing electric wire and the new electric wire do not cross each other.

  Furthermore, in the process in which a new electric wire having a clamp at the tip passes through the gold wheel located below, the gold wheel and the new electric wire are in strong contact with each other, and a strong pressing force is applied to the gold wheel in the direction of travel of the new electric wire. In addition, when the clamp part of the new electric wire passes through the gold wheel located on the lower side, a downward pulling force is generated on the existing electric wire equipped with the gold wheel located on the upper side. Eliminates the jumping of the existing wire due to the release of its pulling force when the clamp passes through the gold wheel, ensuring that the new wire passing through the gold wheel and the existing wire with the gold wheel are damaged Blocking.

  These are the effects brought about by attaching the wire wheels for hanging electric wires to both ends of the connecting body through the frame so as to be tiltable with respect to the connecting body. Since the gold wheel attached to the connecting body can tilt in the front-rear direction of the existing electric wire or the new electric wire, for example, when the new electric wire with a clamp portion passes through the gold wheel, a large load is applied to the gold wheel. Even if this works, a smooth buffering operation is ensured and damage to newly installed electric wires and the like is avoided.

  For example, when passing through the clamp part during wire replacement work, the frame that supports the lower gold wheel slightly tilts in the direction of travel of the new electric wire due to the load acting on the lower gold wheel, and the load is absorbed efficiently.・ Relieved. Therefore, the risk of damaging the electric wire (transmission line) during construction can be greatly reduced.

  On the other hand, when the clamp part passes the gold wheel, the frame supporting the lower gold wheel returns to its original position, but the load when passing the clamp part is originally buffered by the tilting of the frame. For this reason, the load is extremely small even in this return operation, and in addition, the small amount of load is absorbed and alleviated by the electric wire replacement device, so that the bounce phenomenon of the entire device can be minimized.

  In addition, since the gold wheel attached to the connecting body can tilt in the left-right direction, for example, in the wire switching device installed at a position about 50 m away from the armrest of the steel tower, the wire switching device is vertical. Rather, even if it is in a slightly slanted state, the new electric wire or the existing electric wire will contact the gold wheel appropriately, and the new electric wire passing through the gold wheel or the existing electric wire equipped with the gold wheel will be damaged. The occurrence of the situation is surely prevented.

  Furthermore, since the gold wheel attached to the connection body can rotate with respect to the connection body, for example, new electric wires and existing electric wires with different tensions are affected by wind, etc. Even when the movement is not performed, a smooth buffering operation can be secured.

  In this way, the gold wheel attached to the coupling body can be tilted in all directions, front and rear, left and right, and can be rotated, so that the usability of the electric wire switching device is improved and the electric wire (transmission line) is improved. The smooth shock absorbing operation corresponding to the movement in every direction is ensured, and the damage to the newly installed electric wire or the like is avoided.

  In addition, compared to the conventional case where the wire replacement device is installed on the electric wire (transmission line) at intervals of 20 to 30 m, it can be arranged and deployed at intervals of 40 to 60 m by reducing the weight and shortening of the device itself. It becomes possible, and the whole weight concerning the electric wire (transmission line) between steel towers can be reduced significantly. Therefore, the work can be performed without greatly reducing the tension of the existing electric wire. Moreover, the position from the ground of the new electric wire at the time of work can be maintained highly. Furthermore, it becomes difficult to be affected by the wind, the amount of rolling of the electric wire (transmission line) is reduced, and workability can be greatly improved.

  And as a cost reduction effect, the operation | work which ensures the separation from another workpiece | work etc. can be abbreviate | omitted in the lower crossing location of an electric wire (power transmission line), or the operation | work which installs a protection scaffold can be abbreviate | omitted. In addition, in the case of 4 or more wires (transmission lines), it is possible to easily secure the separation from the lower line when the upper line is replaced, and the live lines near the construction site (transmission lines) Can be done easily. Furthermore, the weight and size of the entire device can be reduced, so that the transportation cost of the device itself and the inspection and storage management cost can be reduced.

  In addition, since there are many component connection parts in the past when creating the wire re-spanning device and attaching the wire re-sending device to the wire (transmission line), the device was created on the ground for each site and completed. The equipment was lifted onto a steel tower using heavy equipment and attached to a power line (transmission line). By the present invention, the entire equipment was reduced in size and the weight of the equipment was greatly reduced. This eliminates the need for work and requires only work on the steel tower, enabling efficient wire replacement work and shortening the work period.

  Further, the connecting body has ball-shaped support hole portions at both ends, and a ball projecting from both ends of the connection body by fitting the ball portion of the ball shaft composed of the ball portion and the shaft portion into the support hole portion of the connection body. Since the frame body supporting the gold wheel is attached to the shaft portion of the shaft, various movements of the frame body are realized via the shaft portion, and various loads are efficiently absorbed and relaxed.

  Further, the frame body is provided with a hole at the end of the frame body, the shaft portion of the ball shaft protruding from the coupling body is inserted into the hole portion of the frame body, and a nut is screwed into the shaft portion to support the metal wheel. Since it is attached to the connecting body, it is possible to freely adjust the degree of absorbing and relaxing the strong load acting on the gold wheel, the vertical jump and the like.

  Further, since a slight gap is provided between the frame body that supports the gold wheel and the coupling body, smooth movement in the frame body is ensured.

  In addition, since the connecting body is provided with a groove portion for inserting the coasting rope on the peripheral surface and is provided with a stopper for closing and opening the groove portion, the coasting rope inserted into the groove portion can be easily fixed.

  Moreover, since the groove part which inserts a coasting rope is provided in the slanting shape in the surrounding surface of a coupling body, insertion of a coasting rope to a groove part is very easy.

  Furthermore, since the length of the electric wire changing device is about 40 cm and is small, the work on the steel tower or the ground is extremely easy.

  In addition, since the wire replacement device can cope with the replacement of multi-conductor electric wires, various wire replacement work can be performed efficiently.

  The best mode for carrying out the present invention will be described below with reference to the drawings. As shown in FIGS. 1 and 2, the present invention is an electric wire replacement device 1 used to replace an existing electric wire P installed between a plurality of steel towers with a new electric wire Q. Are provided with wire wheels 3 and 4 for hanging electric wires. Further, the wire wheels 3 and 4 for hanging electric wires are attached to the connecting body 2 via the frames 5 and 6 so as to be tiltable and rotatable. This electric wire changing apparatus 1 is a small and light integrated apparatus that does not require the creation of parts according to the purpose of use or the connection of a plurality of parts, and is formed in a length of about 40 cm. .

  As shown in FIGS. 3 and 4, the connecting body 2 includes ball-shaped support hole portions 7 at both ends, and the ball portion 8 of the ball shaft 10 including the ball portion 8 and the shaft portion 9 is connected to the support hole of the connection body 2. The frame 5 that supports the gold wheel 3 is attached to the shaft portion 9 of the ball shaft 10 that is fitted to the portion 7 and protrudes from the upper end of the connecting body 2.

  Also, a hole 11 is provided at the end of the frame 5, the shaft 9 of the ball shaft 10 protruding from the upper end of the connecting body 2 is inserted into the hole 11 of the frame 5, and a nut 12 is inserted into the shaft 9. A frame body 5 that is screwed to support the gold wheel 3 is attached to the connecting body 2.

  Specifically, as shown in FIGS. 3 and 4, the base end portion of the frame body 5 formed in a substantially U shape so as to support the gold wheel 3 is provided with a predetermined width and height. It is formed in a trapezoidal shape, and a rectangular recess 13 is provided on the side surface of the substantially trapezoidal portion. A hole 11 is provided on the lower surface of the rectangular recess 13. Then, the shaft portion 9 of the ball shaft 10 is inserted into the hole portion 11 in the rectangular recess 13 from below, and the nut 12 is screwed to the tip of the shaft portion 9 protruding into the rectangular recess 13. At this time, as shown in FIGS. 1, 4, and 7, a slight gap T is generated between the frame body 5 that supports the gold wheel 3 and the connecting body 2.

  The connection structure by the hole 11, the nut 12, the ball shaft 10, and the support hole 7 in the rectangular recess 13 is the same in the other gold wheel 4, the frame body 6, and the connection body 2. In the other gold wheel 4, the shaft portion 9 of the ball shaft 10 is inserted into the hole 11 in the rectangular recess 13 from above, and the nut 12 is screwed to the tip of the shaft portion 9 protruding into the rectangular recess 13. It is combined. At this time, as shown in FIGS. 1 and 7, a slight gap T is generated between the frame body 6 that supports the gold wheel 4 and the connecting body 2.

  Further, the frame body 5 that rotatably supports the gold wheel 3 is formed in a substantially U shape by two frame body pieces 5A and 5B, as shown in FIGS. As shown in FIGS. 1 and 3, the two frame body pieces 5 </ b> A and 5 </ b> B are rotatably attached to the frame body pieces 5 </ b> A and 5 </ b> B via a shaft 14 that supports the gold wheel 3. A bolt shaft 16 projects from a vertical wall 15 extending toward the rectangular recess 13 at the base portion of one frame piece 5A, and a cylindrical fastening member having a predetermined length is provided on the bolt shaft 16. Attaching nut 17 is screwed.

  Then, the hook groove 18 formed in the base portion of the other frame piece 5B is fitted into the bolt shaft 16 to tighten the tightening nut 17. The hook groove 18 is provided in the vertical plate 19 that contacts the vertical wall 15 of the frame piece 5A, and the vertical wall 15 of the frame piece 5A and the vertical plate 19 of the frame piece 5B are brought into contact with each other and tightened. The vertical wall 15 of the frame piece 5A and the vertical plate 19 of the frame piece 5B are fixed by the nut 17. At this time, by arranging protective members such as rubber and plastic on the inner side surfaces of the two frame pieces 5A and 5B, it is possible to more reliably prevent occurrence of damage to the new electric wire Q and the existing electric wire P. it can. In addition, also in the frame body 6 which supports the gold wheel 4 rotatably, the same rotation structure and fixing structure by two frame body pieces are adopted.

  The connecting body 2 is provided with a groove portion 20 for inserting the coasting rope R on the peripheral surface, and is provided with a stopper 21 for closing and opening the groove portion 20. The groove portion 20 into which the coasting rope R is inserted is provided on the peripheral surface of the connecting body 2 in an oblique manner. The stopper 21 is a cylindrical body screwed along the connecting body 2, and closes and opens the groove 20 by changing the screwing height of the cylindrical body.

  As another configuration of the stopper 21 in the electric wire switching device 1, as shown in FIG. 5, a swingable opening / closing lever 22 for connecting the coasting rope R to the reversible high-tension coupling body 2. Is attached. The opening / closing lever 22 is fixed to a rotating portion 23 that has a U-shaped groove 24 and is attached to the connecting body 2 so as to be rotatable. Then, the coasting rope R is in an open state in which the U-shaped groove portion 25 into which the coasting rope R provided in the connecting body 2 is inserted and the U-shaped groove 24 provided in the rotating portion 23 that fixes the opening / closing lever 22 are matched. Is inserted. Thereafter, the opening / closing lever 22 is rotated approximately 90 degrees to rotate the rotating portion 23 so that the groove portion 25 into which the coasting rope R is inserted is closed by the peripheral wall of the rotating portion 23.

  Further, as shown in FIG. 6, by forming the shaft portion 9 of the ball shaft 10 held in the support hole portion 7 of the connecting body 2 to be thin, the gold wheels 3 and 4 are supported with respect to the connecting body 2. The frame members 5 and 6 can be tilted freely over an angle of 90 degrees.

  Next, an example of use and operation of the best mode of the present invention configured as described above will be described.

  First, in order to arrange and deploy the electric wire replacement device 1 along the existing electric wires P, the coasting rope R is connected to the groove portion 20 of each electric wire replacement device 1, and the existing electric wires P are attached to the upper gold wheel 3. . Further, the existing electric wire P is attached to the lower gold wheel 4.

  The gold wheel 3 is attached to the existing electric wire P by loosening the fastening nut 17 provided on the frame piece 5A and rotating the other frame piece 5B to open the frame pieces 5A and 5B. Then, the open portions of the frame pieces 5A and 5B are hooked on the existing electric wire P so that the existing electric wire P is brought into contact with the gold wheel 3 from below, and the gold wheel 3 is supported from below by the existing electric wire P. Thereafter, the frame piece 5B is rotated to close the frame pieces 5A and 5B, and the fastening nut 17 is tightened to fix the frame piece 5A and the single frame 5B.

  When connecting the coasting rope R to the connector 2, the stopper 21 is rotated to open the groove portion 20, and after inserting the coasting rope R into the groove portion 20, stop the opening portion of the groove portion 20 in the closing direction. The coasting rope R is fixed to the coupling body 2 by rotating the tool 21.

  Then, the new electric wire Q is connected to the existing electric wire P mounted on the lower gold wheel 4 via the wire W and the clamp portion S. In this state, the new electric wire Q passes over the gold wheel 4 while the new wire Q provided with the clamp portion S is supported by the gold wheel 4.

  At this time, as shown in FIG. 7 (a), the frame body 6 supporting the lower gold wheel 4 by the load of the clamp portion S acting on the lower gold wheel 4 moves in the traveling direction of the new electric wire Q. The load acting on the gold wheel 4 is slightly absorbed and relaxed with a slight tilt. Therefore, the risk of damaging the electric wire (transmission line) during construction can be greatly reduced.

  On the other hand, as shown in FIG. 7 (b), when the clamp part S passes through the gold wheel 4, the frame body 6 supporting the lower gold wheel 4 returns to its original position. Since the load when passing through the portion S is originally buffered by the tilting of the frame body 6, the load is extremely small even in this return operation, and in addition, the wire realignment device 1 further absorbs and relaxes the small load. Therefore, the bounce phenomenon of the entire apparatus can be minimized.

  Then, after the existing electric wire P is relaxed and the new electric wire Q is tensioned, the electric wire (transmission line) is turned upside down, and the existing electric wire P moved downward is replaced with the new electric wire Q.

  INDUSTRIAL APPLICABILITY The present invention can be widely used for various constructions as an electric wire replacement apparatus 1 for replacing an existing electric wire P installed between a plurality of steel towers with a new electric wire Q.

It is a perspective view which shows the use condition which attached the electric wire replacement apparatus to the electric wire (power transmission line). It is a perspective view which shows the state which rotated the lower gold wheel. It is a disassembled perspective view which shows the state which fixes the both frame piece which comprises a frame, and the state which inserts a coasting rope in the groove part of a connection body. It is a perspective view which shows the state which fixed both the frame piece which comprises a frame, and the state which inserted the coasting rope in the groove part of the connection body. It is a front view which shows the structure of the electric wire spanning apparatus provided with the opening / closing lever. It is a partially expanded side view which shows the structure of the electric wire replacement apparatus which can tilt the frame which supports a gold wheel at an angle of 90 degree | times. The operation of the electric wire changing device is shown. (A) is a new electric wire with a frame body supporting the lower gold wheel by a load acting on the lower gold wheel when passing the clamp part in the electric wire changing work. The side view which shows the state which is tilting in the advancing direction of (b), (b) is a side view which shows the state which the frame which supports the lower gold wheel returns to the original position after passing a clamp part. is there. It is a partially expanded front view which shows the structure of the conventional electric wire spanning apparatus. It is the schematic which illustrates the conventional electric wire stretching method. The structure of the conventional electric wire reversing apparatus is illustrated, (a) is the side which shows the state by which the electric wire rewiring apparatus was pulled below with the load which acts on a money wheel at the time of the clamp part passage in electric wire rewiring work FIG. 4B is a side view showing a state in which the load acting on the gold wheel is released after passing through the clamp portion and the electric wire changing device bounces upward.

Explanation of symbols

P ... Existing electric wire Q ... New electric wire R ... Laying rope W ... Wire S ... Clamping part T ... Gap 1 ... Wire replacement device 2 ... Connector 3,4 ... Gold wheel 5,6 ... Frame 5A, 5B ... Frame Piece 7 ... Bearing hole portion 8 ... Ball portion 9 ... Shaft portion 10 ... Ball shaft 11 ... Hole portion 12 ... Nut 13 ... Rectangular recess 14 ... Shaft 15 ... Vertical wall 16 ... Bolt shaft 17 ... Tightening nut 18 ... Hook Groove 19 ... Vertical plate 20 ... Groove portion 21 ... Stopper 22 ... Opening / closing lever 23 ... Turning portion 24 ... U-shaped groove 25 ... Groove portion 100 ... Connecting rope 101 ... Carabiner fittings 102A, 102Aa ... Gold wheel 102B, 102Bb ... Gold wheel 103 ... Stopper 104 ... Groove 105 ... Tube 106 ... Knot 107 ... Rod 108 ... Connection fitting 201A, 201B ... Frame

Claims (7)

This is a wire replacement device used to replace existing wires installed between multiple steel towers with newly installed wires. At both ends of the connecting body, a gold wheel for wire suspension is attached via a frame. The connecting body has ball-shaped support hole portions at both ends, the ball shaft of the ball shaft composed of the ball portion and the shaft portion is fitted into the support hole portions of the connecting body, and protrudes from both ends of the connection body. A frame body that supports the gold wheel is attached to the shaft portion of the frame, and a slight gap is provided between the frame body that supports the gold wheel and the connection body, so that the frame body that supports the gold wheel is connected to the connection body. An electric wire changing device characterized in that it can be tilted with respect to the wire.   The electric wire replacement apparatus according to claim 1, wherein the gold wheel attached to the coupling body is tiltable in the front-rear direction of the existing electric wire or the new electric wire.   The electric wire replacement apparatus according to claim 1 or 2, wherein the gold wheel attached to the connection body is rotatable with respect to the connection body. A hole is provided at the end of the frame body, the shaft portion of the ball shaft protruding from the connection body is inserted into the hole portion of the frame body, and a nut is screwed into the shaft portion to connect the frame body supporting the metal wheel. The electric wire replacement apparatus according to any one of claims 1 to 3, which is attached to a body. The connecting body includes a stopper provided with a screw cylinder body that is provided with a groove portion for inserting a coasting rope on a peripheral surface, and that closes and opens the groove portion by changing a screwing height along the connecting body. The electric wire replacement apparatus in any one of. 6. The electric wire replacement device according to claim 5 , wherein the groove portion into which the laminating rope is inserted is provided in a slanting manner on the peripheral surface of the coupling body. The electric wire changing apparatus according to any one of claims 1 to 6 , wherein the electric wire changing apparatus has a length of about 40 cm.

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