JP5090882B2 - Tension introducing device and wire reeling equipment equipped with the tension introducing device - Google Patents

Description

  In the present invention, when a suspension bridge cable is installed by a tension introducing device that sends out the wire to be a starting point for applying tension to the wire wound from the run winding coil set in the uncoiler and the air spinning method, the run winding coil The present invention relates to a wire reeling facility provided with a tension introducing device for aligning and winding a wire wound in a run on a pre-winding reel.

  Conventionally, when installing a suspension bridge cable by the air spinning method, first, the wire for suspension bridge cable (wire of galvanized steel wire) is wound in a run-wound state in a factory or at the construction site. Wire reeling is performed in which the wire is unwound and re-wound so as to be aligned with the winding reel and to be in the required squeezed state. The run-wound coil is formed in a cylindrical shape by hanging around a vertical center guide so as to circulate a wire from the upper part and laminating from the lower part upward. Since the run coil is wound in a rough state as described above, even if the wire is unwound from the run coil and an attempt is made to construct the suspension bridge cable by the air spinning method, the unwinding of the wire is not stable, In order to cause problems such as catching, wire reeling is performed to rewind around the winding reel.

  6 and 7 show an example of a conventional wire reeling facility provided at a construction site of a suspension bridge. As described above, the run-wound coil 2 wound in the run-wound state is used by using a crane or a wrecker. Set against undriven uncoiler 3 of wire reeling equipment. The uncoiler 3 has a guide 3b in the upper center of a turntable 3a that can freely rotate about a vertical axis, and the cylindrical run-wound coil 2 has a central opening fitted into the guide 3b. Set. Next, the wire 1 is unwound from the run winding coil 2 set in the uncoiler 3 and one of the winding reels 6a and 6b provided in the winding / unwinding device 5 via the tension applying device 4 (in FIG. The tip of the wire 1 is set on the winding reel 6a), and the winding reel 6a of the winding / unwinding device 5 is driven by the winding drive device 15 to rotate the uncoiler 3 via the tension applying device 4. The wire 1 drawn out from the side portion of the run-wound coil 2 is taken up in a necessary amount aligned state by one of the winding reels 6a.

  When the suspension bridge cable is installed by the air spinning method, the wire 1 drawn out from the other winding reel 6b that has already finished the aligned winding of the wire 1 by the wire reeling equipment is used as the strand tension tower in FIG. 7, the wire sheave 8, the strand guide roller 9, the spinning wheel 10, and the strand shoe 12 attached to the strand adjusting device 11 are sequentially hooked to temporarily fix the tip of the wire 1 to the anchor 13. By applying a braking operation to the rotation of the winding reel 6b of the winding / unwinding device 5 while observing the vertical movement, the winding / unwinding is performed at the driving speed of the rope driving device 14, that is, the construction speed of the spinning wheel 10. Unwinding is performed by following the feeding speed of the winding reel 6b in the apparatus 5, and then the winding of the wires 1 is completed during this time. And configured to perform the Ang ring work by one of Seimaki reel 6a, it had to unwind Seimaki reel 6a, 6b of alternately.

In addition, as a conventional apparatus of the above-mentioned wire reeling equipment, there exists a thing as shown, for example in patent document 1. FIG.
Japanese Patent Laid-Open No. 51-52636

  However, the conventional wire reeling equipment as disclosed in Patent Document 1 has the following various problems.

  That is, the run-wound coil 2 is obtained by winding the wire 1 so as to drop from the upper side to the lower side, and is set on the uncoiler 3 so that its axis is vertical. When unwinding 2, the wire 1 is unwound from the side of the uncoiler 3 in a tangential direction, that is, in a substantially horizontal direction. In some cases, the wire 1 is caught by being drawn and drawn, and the wire 1 is caught. This causes a problem that the wire 1 cannot be unwound. When the unwinding of the wire 1 becomes impossible in this way, it is necessary to stop the winding / unwinding device 5 and to loosen the wire 1 that is caught by the run winding coil 2 so that it can be wound again. However, there was a problem that the recovery work for this was very difficult and time consuming. Moreover, when the wire 1 is forcibly pulled and squeezed, there is a possibility that the coating such as zinc plating on the surface may be peeled off.

  In addition, when the wire 1 is being taken up by one winding reel 6a of the winding / unwinding device 5, if the driving of the winding reel 6a is suddenly stopped, it rotates following. Since the run-wound coil 2 is heavy and continues to rotate due to inertia, the wire 1 is undesirably unwound from the run-wound coil 2, and even in this case, the restoration work is very difficult and takes time. Had.

  In order to prevent the occurrence of the above trouble, the actual winding speed by the conventional wire reeling equipment has been limited to about 100 to 200 m / min.

  On the other hand, when suspending a suspension bridge cable by the air spinning method, the wire 1 is generally drawn out so as to maintain the erection speed of about 240 m / min. In conventional wire reeling equipment, 70 to 100 kgf (≈ The wire 1 is wound by the winding / unwinding device 5 so that a tension of about 70 × 9.8 to 100 × 9.8 N) is maintained.

  And according to the said conventional wire reeling equipment, the wire 1 is wound up by the winding speed of about 100-200 m / min with the one winding reel 6a with which two winding / unwinding apparatuses 5 were equipped. Occasionally, the wire 1 is fed out by the other winding reel 6b, so that the speed of the suspension bridge cable installed at around 240 m / min can be accommodated, and thus the wires of the winding reels 6a and 6b. 1 can be continuously fed out alternately. Incidentally, in the wire erection, it is necessary to process the starting end and the terminal end after the wire 1 is drawn out, and there is no problem even if the reeling speed is slower than the wire erection speed.

  However, in recent years, it has been studied to increase the erection speed of the suspension bridge cable to around 400 m / min. If the erection speed is increased in this way, the wire reeling equipment that cannot increase the winding speed as in the past. Then, winding is not in time, and it is necessary to install a plurality of wire reeling equipments for this reason, and there is a problem that equipment costs increase.

  Further, in the tension applying device 4 provided in the conventional wire reeling equipment, the tension of the wire 1 taken up by the winding reels 6a and 6b is not stable, and the wire 1 is kept in an arbitrary tension. It was not possible to wind up stably.

  In view of such circumstances, the present invention provides a tension introducing device capable of stably and surely adjusting the tension of the wire, which is a starting point for applying tension to the wire wound from the run winding coil set in the uncoiler, and a smooth It is an object of the present invention to provide a wire reeling facility equipped with a tension introducing device that can continuously operate and can meet the demand for high-speed operation.

In the present invention, the run-wound coil wound by running the wire so as to drop from the upper side to the lower side is set on the uncoiler so that its axis is vertical. A tension introducing device that feeds out the wire so as to serve as a starting point, the shaft being arranged in parallel at a required interval in a direction perpendicular to the feeding direction of the wire that is unwound from the run-wound coil in the axial direction upward A presser roller disposed above the run-wound coil set in the uncoiler so as to be rotatable about the center and feeding out the wire while pinching the wire, and urging the presser roller toward each other and pinching the wire and clamping force adjusting means for adjusting the force, and the rotation load imparting means for imparting a load to rotation of the pressing roller, and Tsutomu Cho introduction apparatus that having a, the tensioning On the exit side of the device, the wire fed from the tension introducing device is hung between the fixed sheave and the moving sheave movable in the vertical direction, and the moving sheave moves up and down in accordance with the change in the length of the wire due to the tension fluctuation. An accumulator device that absorbs the wire, and the wire is wound around the winding reel on the downstream side of the accumulator device and wound into an aligned state by driving the winding drive device. A winding and unwinding device adapted to unwind for the purpose, wherein the fixed sheave is fixed on a mount of the accumulator device provided at a required height, and the tension introducing device is mounted on the mount It is related to the wire reeling equipment provided with the tension | tensile_strength introduction apparatus characterized by being arrange | positioned .

  In the wire reeling equipment provided with the tension introducing device, a tension applying device that applies tension to the wire wound around the winding reel of the winding / unwinding device on the entry side of the winding / unwinding device. Can also be arranged.

  According to the tension introducing device of the present invention, it is possible to obtain an excellent effect that the tension of the wire can be adjusted stably and reliably as a starting point for applying tension to the wire wound from the run-wound coil set in the uncoiler. .

According to the wire reeling equipment equipped with the tension introducing device of the present invention, the wire wound from the run coil of the uncoiler is guided to the tension introducing device, and the tension of the wire is stably and reliably used as a starting point for applying tension to the wire. Since the wire winding operation by the winding / unwinding device can be stably performed while adjusting , it is possible to continuously perform smooth operation and meet the demand for high-speed operation. Can have an effect.

  In the wire reeling equipment equipped with the tension introducing device according to the present invention, in the wire reeling equipment equipped with the tension introducing device, the wire fed from the tension introducing device is fixed to the outlet side of the tension introducing device. By placing an accumulator device that hangs around a moving sheave that can move in the vertical direction and absorbs the change in length caused by fluctuations in the tension of the wire by moving the sheave up and down, the wire As a starting point for applying tension to the wire, the wire tensioning device adjusts the wire tension stably and reliably, while the wire is guided to the accumulator device and the wire tension is kept constant. An excellent effect that the winding operation can be performed more stably can be achieved.

  In the wire reeling equipment equipped with the tension introducing device of the present invention, a tension applying device for applying tension to the wire wound around the winding reel of the winding / unwinding device on the entry side of the winding / unwinding device If it arrange | positions, the outstanding effect that the tension | tensile_strength of the wire wound up by the winding reel can be stabilized further can be show | played.

  Embodiments of the present invention will be described below with reference to the accompanying drawings.

  1 is a plan view showing an example of the tension introducing device of the present invention, FIG. 2 is a front view showing an example of the tension introducing device of the present invention, and FIG. 3 is a side view showing an example of the tension introducing device of the present invention. FIG. 5 is an overall side view showing an example of a wire reeling facility equipped with the tension introducing device of the present invention, and FIG. 5 is an overall plan view showing an example of a wire reeling facility equipped with the tension introducing device of the present invention.

  First, the wire reeling equipment provided with the tension introducing device will be described. As shown in FIGS. 4 and 5, the wire reeling equipment is equipped with a run winding coil 2 around which the wire 1 is wound and the wire 1 is wound. An uncoiler 16 that pulls out the wire, a tension introducing device 50 that sends out the wire 1 to be a starting point for applying tension to the wire 1 that is unwound from the run winding coil 2 set in the uncoiler 16, and the tension introducing device 50 that is fed out. An accumulator device 17 in which the wire 1 is wound between a fixed sheave 34 and a movable sheave 35 movable in the vertical direction so as to absorb the variation of the length due to the tension variation of the wire 1, and the accumulator device The wire 1 from 17 is wound around one of the two winding reels 6 a and 6 b and driven by the winding drive device 15. A winding / unwinding device constructed in substantially the same manner as in the prior art, wherein the wire 1 wound in a row and simultaneously wound on the other winding reel 6b is wound for the construction of a suspension bridge cable. 18 and a tension applying device 19 that applies tension to the wire 1 wound around the winding reels 6a and 6b of the winding / unwinding device 18. In the figure, reference numeral 20 denotes a wire 1 wound around the winding reels 6a and 6b of the winding / unwinding device 18 and slides in the width direction of the winding reels 6a and 6b, thereby winding in an aligned state. The winding / unwinding device 18 includes a brake device (not shown) for braking the rotation of the winding reels 6a and 6b.

  The uncoiler 16 includes a horizontal rotating unit 21 that horizontally rotates while holding the run-wound coil 2 so that the axis of the run-wound coil 2 is vertical, and an unwinding drive device 22 that rotationally drives the horizontal rotating unit 21. It is configured. Further, a guide 21 a for guiding the wire 1 drawn upward from the run-wound coil 2 so as to be wound in the outer circumferential direction of the run-wound coil 2 is detachable on the axial center part of the horizontal rotating part 21. Is provided. The uncoiler 16 drives the unwinding drive device 22 to unwind the wire 1 from the run winding coil 2, and drives the winding drive device 15 to adjust the winding reels 6a of the winding / unwinding device 18. The operation of winding the wire 1 by 6b is performed simultaneously.

  The tension applying device 19 for applying tension to the wire 1 wound around the winding reels 6a and 6b of the winding / unwinding device 18 hangs the wire 1 between the spaced winding sheaves 23 and 24 at least once. Friction force increasing means 25 that rotates to increase the frictional force and the rotation of the brake disk 26 provided in the winding sheave 24 are braked by the pressing force of the brake shoe 27 that is actuated by the braking actuator 27a, and the winding reel 6a , 6b, and tension adjusting means 28 for adjusting the tension of the wire 1 wound up.

  Further, the accumulator device 17 provided between the uncoiler 16 and the tension applying device 19 includes a tower main body 29 having a required height, and extends to the top of the uncoiler 16 at the upper end of the tower main body 29. A gantry 30 is provided, and a conduit 32 provided at the upper end of a bowl-shaped guide cone 31 having a conical shape is fixed to the lower surface of the tip of the gantry 30. Further, a turning sheave 33 is provided above the tip of the pedestal 30, and a fixed sheave 34 that rotates with a plurality of guide grooves 34 a is fixed to the top of the tower body 29. The tip of the wire 1 unwound upward from the run coil 2 of the uncoiler 16 is guided from the conduit 32 to the turning sheave 33 through the inside of the guide cone 31, and then guided to the fixed sheave 34. The moving sheave 35 is suspended in the space 36 of the tower body 29 so as to be movable up and down by hanging around the stationary sheave 34 and the moving sheave 35 provided with a plurality of guide grooves 35a in the same manner as the fixed sheave 34. I try to lower it. At this time, a weight 37 is attached to the moving sheave 35 as necessary, and the tension of the wire 1 on the upstream side of the tension applying device 19 is adjusted by the weight of the weight 37 and the moving sheave 35. It is also possible to adjust the tension of the wire 1 upstream of the tension applying device 19 with the weight of only the moving sheave 35 without providing the weight 37.

  Thereby, the accumulator device 17 is connected to the uncoiler 16 according to the difference between the unwinding speed of the wire 1 unwound from the uncoiler 16 and the unwinding speed of the wire 1 wound around the winding / unwinding device 18. Variations in the length of the wire 1 occurring between the tension applying device 19 and the moving sheave 35 are absorbed.

  The tip of the wire 1 led out from the fixed sheave 34 of the accumulator device 17 is wound at least once between the winding sheaves 23 and 24 of the tension applying device 19 and then the winding reel of the winding / unwinding device 18. It winds around one of 6a, 6b.

  On the other hand, in the above-described wire reeling equipment, as shown in FIG. 4, the pressure roller 39 is pressed against the wire 1 between the tension applying device 19 and the winding / unwinding device 18, and the reaction force is measured. Thus, a tension meter 40 is provided so as to detect the tension of the wire 1 wound by the winding / unwinding device 18, and the tension applying device so that the detected tension 41 by the tension meter 40 becomes the tension set value 42. 19 is provided with a tension control device 43 for controlling the brake actuator 27a of the tension adjusting means 28.

  The accumulator device 17 is provided with a position detection sensor for detecting the upper limit position A and the lower limit position B of the moving sheave 35. That is, an upper limit switch 45a that operates when the striker 44 provided on the moving sheave 35 moves to an upper portion of a predetermined height, and a lower limit switch 45b that operates when the striker 44 provided on the moving sheave 35 moves to a lower portion of a predetermined height. Are attached to the tower main body 29 to constitute the position detection sensor 45. Furthermore, in the state where the wire 1 is being wound at a constant winding speed by the winding / unwinding device 18, the height position of the moving sheave 35 detected by the position detection sensor 45 is the upper limit position A and the lower limit position. A wire length control device 46 for controlling the driving of the unwinding drive device 22 of the uncoiler 16 is provided so as to be always located between the wire B and the wire B. That is, when the upper limit switch 45a is actuated by moving the moving sheave 35 up and down, the uncoiler 16 is insufficient to unwind the wire 1, so that the unwinding speed of the unwinding drive device 22 is controlled to be increased. When the lower limit switch 45b is actuated by moving the moving sheave 35 up and down, the uncoiler 16 unwinds the wire 1 so that the unwinding speed by the unwinding drive device 22 is controlled. Like to do.

  The wire length control device 46 unwinds the wire 1 by the uncoiler 16 as an emergency state when the position of the moving sheave 35 of the accumulator device 17 does not return beyond the range of the upper limit position A or the lower limit position B. And the control which stops winding of the wire 1 by the winding / unwinding device 18 is performed. At this time, an emergency detection switch may be provided above the upper limit switch 45a and below the lower limit switch 45b to detect an emergency.

  The tension introducing device 50 is installed on a pair of base frames 51 fixedly arranged on the gantry 30 of the accumulator device 17 so as to be positioned immediately above the conduit 32, as shown in FIGS. As described above, the wire 1 is disposed at an upper position on the exit side of the uncoiler 16 so as to be rotatable about a shaft 52 arranged in parallel in a direction perpendicular to the feeding direction of the wire 1 and sandwiching the wire 1. The pressing roller 53 that feeds out while pressing, the clamping force adjusting means 54 that urges the pressing roller 53 in a direction to approach each other and adjusts the clamping force of the wire 1, and a rotational load that applies a load to the rotation of the pressing roller 53 Means 55.

  A protective member 53a made of rubber or urethane resin is integrally provided on the surface of the pressing roller 53 so as to prevent the coating such as galvanizing on the surface of the wire 1 from being peeled off. . In addition, instead of providing the protective member 53a integrally on the surface of the pressing roller 53 as described above, the pressing roller 53 itself can be configured by a tire or the like.

  The clamping force adjusting means 54 is arranged on the base frame 51 so that a roller pedestal 57 for supporting the bearing 56 of the presser roller 53 is slidable in a direction approaching or separating from each other. A jack 58 is attached so as to be stretched over, and the pressing roller 53 is urged in a direction to approach each other by a contracting operation of the jack 58 and the holding force of the wire 1 is adjusted. The clamping force adjusting means 54 may be of a type in which the roller pedestal 57 is driven using a rack and a pinion instead of using the jack 58 as described above, and various driving mechanisms can be selected.

  The rotation load applying means 55 applies a load to the rotation of the presser roller 53 by braking the rotation of the brake disc 59 fitted to the shaft 52 of the presser roller 53 with the pressing force of the brake shoe 61 operated by the brake actuator 60. It is configured to give.

  The upper surface of the base frame 51 is coated with Teflon (registered trademark) or the like for facilitating the sliding of the roller pedestal 57 to form a slide surface 62, and the roller pedestal 57 is attached to the base frame 51. A slide holder 63 that is slidably held so as not to drop off from the frame 51 is attached. Between the base frames 51, guide rollers 64 for guiding the wire 1 fed from below to the press rollers 53 are disposed.

  Next, the operation of the illustrated example will be described.

  A tubular run coil 2 is formed by winding a wire 1 for a suspension bridge cable (a galvanized steel wire) in a run winding state at a factory or a construction site. The axis is set to the horizontal rotating part 21 of the uncoiler 16 of the wire reeling equipment provided at the construction site of the suspension bridge by a tow truck or the like, and the guide 21a is mounted on the upper part of the axial center part of the horizontal rotating part 21. .

  The wire 1 is unwound from the outer periphery of the run-wound coil 2, and the tip of the wire 1 passes through the inside of the guide cone 31 provided in the accumulator device 17 and between the guide roller 64 and the guide roller 64, and the tension introducing device 50. After being guided between the presser rollers 53 and guided to the turning sheave 33 from here, the guided sheave 35 is guided to the fixed sheave 34, and is hung around the stationary sheave 34 and the moving sheave 35 a plurality of times, thereby moving the moving sheave 35 to the tower body 29. The tip of the wire 1 led out from the fixed sheave 34 is wound at least once between the winding sheaves 23 and 24 of the tension applying device 19, that is, after being wound around the winding sheave 24 by 180 °. The winding sheave 23 is wound 180 °, and then wound around one of the winding reels 6a and 6b of the winding / unwinding device 18, for example, the winding reel 6a. At this time, the position of the moving sheave 35 suspended from the fixed sheave 34 of the accumulator device 17 is adjusted so as to be positioned between the upper limit position A and the lower limit position B by the position detection sensor 45.

  From this state, the winding drive device 22 of the uncoiler 16 is driven to wind the wire 1 from the run winding coil 2, and the winding drive device 15 of the winding / unwinding device 18 is driven to adjust the winding reel. The winding operation of the wire 1 is started by simultaneously performing the operation of winding the wire 1 with 6a.

  At this time, in the tension introducing device 50, the presser roller 53 is urged in the direction close to each other by the contraction operation of the jack 58 of the holding force adjusting means 54, and the holding force of the wire 1 is adjusted. The rotation of the brake roller 59 of the rotational load applying means 55 fitted to the shaft 52 of the 53 is braked by the pressing force of the brake shoe 61 operated by the brake actuator 60, so that a load is applied to the rotation of the presser roller 53. The wire 1 is fed from between the presser rollers 53 of the tension introducing device 50 so as to be a starting point for applying tension to the wire 1 wound from the run coil 2 set on the uncoiler 16.

  The tension of the wire 1 wound around the winding reel 6a of the winding / unwinding device 18 is detected by a tension meter 40, and the detected tension 41 is input to the tension control device 43. The tension control device 43, the tension adjusting means 28 of the tension applying device 19 is controlled so that the detected tension 41 becomes the tension set value 42.

  As a result, the tension of the wire 1 wound around the winding reel 6a of the winding / unwinding device 18 is determined from the tension introducing device 50 serving as a starting point for applying tension to the wire 1 and the tension application for actually applying the tension. In order to cope with the increase in tension when installing a suspension bridge cable by the air spinning method due to the synergistic action with the device 19, it is ensured to an arbitrarily high tension set value 42 of, for example, 100 kgf (≈100 × 9.8 N) or more. Thus, stable winding operation can be performed.

  As described above, the tension of the wire 1 taken up by the winding / unwinding device 18 by the tension applying device 19 is set to 100 kgf (≈100 × 9.8 N) while using the tension introducing device 50 as a starting point for applying tension to the wire 1. Since the run winding coil 2 of the uncoiler 16 is rotationally driven by the unwinding drive device 22 to assist the unwinding of the wire 1, the unwinder 2 is unwound from the run winding coil 2 set on the uncoiler 16. For example, the tension of the wire 1 can be stably held at a low value of about 5 kgf (≈5 × 9.8 N). Thus, by reducing the tension acting on the wire 1 to be unwound from the run-wound coil 2 and unwinding the wire 1 from the run-wound coil 2, the run-wound coil 2 is wound and the wire 1 is It is possible to reliably prevent the occurrence of a problem such as being caught. Therefore, as the construction speed for constructing the suspension bridge cable by the air spinning method is increased, the winding speed of the wire 1 by the winding / unwinding device 18 is increased to 300 m. Even if it is performed at a high speed of not less than / min or 400 m / min or more, a stable winding operation can be performed without causing a problem that the wire 1 is caught. Further, in the above case, when the wire 1 is simply pulled upward from the horizontal run-wound coil 2 and unwound, the wire 1 is caught when the wire 1 is greatly distorted and bent due to twisting. However, since the unwinding drive device 22 drives the run coil 2 horizontally in the unwinding direction to assist unwinding of the wire 1, for example, a thick wire 1 such as 5 mm or more or 7 mm or more is used. Even so, it is possible to prevent the problem of being caught by twisting.

  On the other hand, the diameter of the run coil 2 and the diameter of the winding reel 6a change as the winding proceeds, and the winding speed of the wire 1 unwound from the uncoiler 16 is wound around the winding / unwinding device 18. When the winding speed of the wire 1 to be taken is slower, the moving sheave 35 of the accumulator device 17 is raised, and the winding speed of the wire 1 unwound from the uncoiler 16 is set to the winding / unwinding device 18. When the winding speed of the wire 1 being wound on the wire 1 is higher than the winding speed of the moving sheave 35 of the accumulator device 17, the moving sheave 35 of the accumulator device 17 moves up and down to move the wire 1 unwound from the uncoiler 16. Between the uncoiler 16 and the tension applying device 19 in accordance with the difference between the unwinding speed of the wire 1 and the winding speed of the wire 1 wound on the winding / unwinding device 18. Jill the variation in length of the wire 1 is absorbed, it is possible to prevent that, as the wire 1 in problems or reverse such caught by the wire 1 slackens is pulled forcibly.

  When the upper limit switch 45a is actuated by raising the moving sheave 35, the uncoiler 16 is insufficient to unwind the wire 1, and therefore control is performed to increase the unwinding speed by the unwinding drive device 22. On the other hand, when the lower limit switch 45b is actuated by lowering the moving sheave 35, the uncoiler 16 has excessively unwound the wire 1, so that the unwinding speed by the unwinding drive device 22 is controlled to be reduced. Is done.

  When the position of the moving sheave 35 of the accumulator device 17 exceeds the range of the upper limit position A or the lower limit position B, the wire length control device 46 unwinds the wire 1 by the uncoiler 16 and winds / unwinds. Since the winding of the wire 1 by the apparatus 18 is stopped, and the operation can be stopped without causing the wire 1 to be slack, the recovery operation can be easily performed.

  Furthermore, the tension of the wire 1 on the upstream side of the tension applying device 19 is maintained at a required value by adjusting the weight of the weight 37 and the moving sheave 35 or the weight of the moving sheave 35 alone.

  In this way, the wire 1 unwound from the run coil 2 of the uncoiler 16 is guided to the tension introducing device 50, and the wire 1 is guided from the accumulator device 17 to the tension applying device 19 while being the starting point for applying tension to the wire 1. Since the winding and unwinding device 18 can stably perform the winding operation of the wire 1 in a state in which the tension of the wire is stably and reliably adjusted, smooth operation can be continuously performed and the operation speed can be increased. It is possible to achieve an excellent effect of being able to meet the demands of

  In the illustrated example, the case where the tension applying device is disposed on the downstream side of the tension introducing device and the upstream side of the winding / unwinding device has been described. However, the wire is wound by the winding reel of the winding / unwinding device. In the case where the tension necessary for winding is obtained only by the tension introducing device, the tension applying device is not necessarily provided.

  In the illustrated example, the case where the tension introducing device is provided in the wire reeling equipment has been described. However, in addition to the tension introducing device provided in the wire reeling equipment, the wire having rigidity to be unwound from the run coil is used. Of course, the present invention can also be applied to a tension introducing device that sends out the wire so as to serve as a starting point for applying tension.

It is a top view which shows an example of the tension | tensile_strength introducing apparatus of this invention. It is a front view which shows an example of the tension | tensile_strength introducing apparatus of this invention, Comprising: It is the II-II arrow equivalent view of FIG. It is a side view which shows an example of the tension | tensile_strength introducing apparatus of this invention, Comprising: It is the III-III arrow equivalent view of FIG. It is a whole side view showing an example of wire reeling equipment provided with the tension introducing device of the present invention. It is a whole top view showing an example of wire reeling equipment provided with the tension introducing device of the present invention. It is a side view which shows an example of the conventional wire reeling installation. It is a top view which shows an example of the conventional wire reeling installation. It is a side view which shows the state which has performed the overhead wire by the air spinning method using an example of the conventional reeling equipment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Wire 2 Run coil 5 Winding / unwinding device 6a Adjusting reel 6b Adjusting reel 7 Strand tension tower 15 Winding drive device 16 Uncoiler 17 Accumulator device 18 Winding / unwinding device 19 Tension applying device 21 Horizontal rotation Part 22 Unwinding drive device 23 Winding sheave 24 Winding sheave 34 Fixed sheave 35 Dynamic sheave 50 Tension introduction device 51 Base frame 52 Shaft 53 Pressing roller 53a Protective member 54 Holding force adjusting means 55 Rotating load applying means 56 Bearing 57 Roller receiver Table 58 Jack 59 Brake disc 60 Brake actuator 61 Brake shoe 62 Slide surface 63 Slide holder 64 Guide roller

Claims (2)

A starting point for applying tension to the wire wound from the run-wound coil in a state in which the run-wound coil wound by dropping the wire from the upper side to the lower side is set in the uncoiler so that its axis is vertical. A tension introducing device for feeding out the wire so that the wire can be rotated around a shaft arranged in parallel at a required interval in a direction perpendicular to the feeding direction of the wire that is unwound from the run-wound coil in the axial direction. The presser roller disposed above the run-wound coil set in the uncoiler and feeding out while sandwiching the wire, and the presser roller are urged in the direction of approaching each other and the holding force of the wire is adjusted. A tension introducing device having clamping force adjusting means and rotational load applying means for applying a load to the rotation of the pressing roller;
On the exit side of the tension introducing device, a wire fed from the tension introducing device is hung between a fixed sheave and a moving sheave that can move in the vertical direction, and a change in length due to a change in the tension of the wire is dynamically moved. An accumulator device that absorbs by moving up and down,
A winding / winding device in which a wire is wound around a winding reel on the downstream side of the accumulator device, wound in an aligned state by driving a winding drive device, and further, the wire of the winding reel is unwound for installation of a suspension bridge cable. An unwinding device,
The fixed sheave is fixed on a gantry of the accumulator device provided at a required height,
A wire reeling facility equipped with a tension introducing device, wherein the tension introducing device is disposed on the gantry. The tension introducing device according to claim 1 , wherein a tension applying device that applies tension to a wire wound around a winding reel of the winding / unwinding device is disposed on an inlet side of the winding / unwinding device. Wire reeling equipment.

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