Wire drawer support device and wire drawer support method

Abstract

To easily install a wire pulley while easing restrictions on the installation location of the wire pulley. [Solution] The wire pulling wheel support device 10, 20 comprises a support rope 11, 21, a pair of mounting parts 12, 22 connected to each end of the support rope and capable of being attached by hooking onto a step bolt 30 on a utility pole located at a high place or a cable 40 strung between utility poles, and a holding part 13, 23 supported by the support rope so as to be movable between the pair of mounting parts and which holds the wire pulling wheel.

Description

[Technical Field]

[0001] The present disclosure relates to a wire pulley support device and a wire pulley support method. [Background technology]

[0002] A common outdoor cable extension method involves attaching multiple extension metal wagons to existing communication cables or pole mounting fixtures on utility poles, and then pulling new communication cables onto these extension metal wagons.

[0003] Patent Document 1 discloses an attachment jig that hoists a wire trolley by engaging with a pole bracket attached to a utility pole. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Utility Model Registration No. 3210756 Summary of the Invention [Problem to be solved by the invention]

[0005] However, in Patent Document 1, a pole arm is required on the utility pole to attach the wire trolley, which limits the locations where the wire trolley can be attached.

[0006] An object of the present disclosure is to provide a wire pulley support device and a wire pulley support method that allow wire pulleys to be easily attached while easing restrictions on the attachment location of the wire pulleys. [Means for solving the problem]

[0007] In order to solve the above problems, a wire pulling pulley support device according to one aspect of the present disclosure includes: A support rope; A pair of attachment parts connected to both ends of the support rope, respectively, and capable of being attached by being hooked onto an attachment object at a high place; a holding portion that is movably supported by a support rope between the pair of mounting portions and that holds a wire pulley; Equipped with. [Effects of the Invention]

[0008] According to the present disclosure, there is provided a wire pulley support device and a wire pulley support method that allow wire pulleys to be easily attached while easing restrictions on the attachment location of the wire pulleys. [Brief explanation of the drawings]

[0009] [Figure 1] 2 is a diagram showing the configuration of a first wire pulling wheel support fixture 10 according to the first embodiment. FIG. [Figure 2] 2 is a detailed view showing the configuration of a first wire pulling wheel support fixture 10 according to the first embodiment. FIG. [Figure 3] 10 is a diagram showing the configuration of a second wire pulling wheel support fixture 20 according to a second embodiment. FIG. [Figure 4] 10 is a detailed view showing the configuration of a second wire pulling wheel support fixture 20 according to a second embodiment. FIG. [Figure 5] 2 is a diagram showing the configuration of a wire pulling wheel 50 according to the present embodiment. FIG. [Figure 6] 1 is a flowchart showing a wire pulling wheel supporting method using a first wire pulling wheel support fixture 10 and a second wire pulling wheel support fixture 20 according to the present embodiment. DETAILED DESCRIPTION OF THE INVENTION

[0010] Hereinafter, embodiments of the present disclosure will be described with reference to the drawings. In all drawings describing the embodiments, common components are designated by the same reference numerals, and repeated description will be omitted. Note that the following embodiments do not unduly limit the content of the present disclosure described in the claims. Furthermore, not all components shown in the embodiments are necessarily essential components of the present disclosure. Furthermore, each drawing is a schematic diagram and is not necessarily a precise illustration.

[0011] In addition, in the following description, when describing elements of the same type without distinguishing between them, reference symbols (or common symbols among the reference symbols) may be used, and when describing elements of the same type with distinction between them, the identification numbers (or reference symbols) of the elements may be used.

[0012] <Summary> The wire pulley support device of this embodiment is a device that supports a wire pulley used to pull a new communication cable to be newly installed between utility poles, when attached to a step bolt, which is a pole mounting device for an outdoor utility pole, or to an existing communication cable already installed between utility poles. The wire pulley is a metal pulley that has a hook portion that can be hooked onto the wire pulley support device, and can pull in the new communication cable while suspended from the wire pulley support device by the hook portion. A step bolt on a utility pole or an existing communication cable already installed between utility poles are examples of an attachment target at a high altitude.

[0013] In this embodiment, "high place" is not limited to a place that is 2 meters or more above the ground, but also includes a place that is so high that a worker on the ground cannot reach it even if he or she stretches out his or her hand. Also, in this embodiment, "tip" refers to one of the longitudinal ends, and "base end" refers to the other of the longitudinal ends.

[0014] First Embodiment The configuration of the first wire pulling trolley support fixture 10 according to the first embodiment will be described. The first wire pulling trolley support fixture 10 according to the first embodiment is a fixture that is attached to a step bolt 30, which is a pole mounting fixture for a utility pole, and supports the wire pulling trolley 50.

[0015] Fig. 1 is a diagram showing the configuration of a first wire pulling pulley support fixture 10 according to the first embodiment. Fig. 2 is a detailed diagram showing the configuration of the first wire pulling pulley support fixture 10 according to the first embodiment.

[0016] As shown in FIG. 1, the first wire pulling pulley support device 10 includes a first support rope 11, a pair of first mounting portions 12, and a first holding portion 13.

[0017] The first wire pulling trolley support device 10 is attached to step bolts 30 on the utility pole by a pair of first mounting portions 12. Step bolts 30 are installed so that workers can place their feet when climbing the utility pole, and multiple step bolts 30 are installed on each of one side and the other side of the utility pole. The multiple step bolts 30 are installed in order at different heights on one side and the other side of the utility pole. That is, of the multiple step bolts 30, odd-numbered step bolts 30 from the bottom are installed on one side of the utility pole, and even-numbered step bolts 30 are installed on the other side. One of the pair of first mounting portions 12 is hooked onto the step bolt 30 on one side of the utility pole, and the other of the pair of first mounting portions 12 is hooked onto the step bolt 30 on the other side that is close to (one step apart from) the step bolt 30 on one side of the utility pole.

[0018] The first wire drawing wheel support device 10 holds the wire drawing wheel 50 by hooking the hook portion 53 of the wire drawing wheel 50 onto the first holding portion 13. The wire drawing wheel 50 supports the new communication cable with the roller portion 51, and extends the new communication cable by rotating the roller portion 51.

[0019] As shown in FIG. 2, the first support rope 11 is a rope that can deform depending on the position of the step bolt 30 to which it is attached. The first support rope 11 has enough strength to support the wire pulley 50 and the newly installed communication cable. The first support rope 11 is a string-like member made of twisted fibers or metal wires, such as a nylon rope. The first support rope 11 has a length that allows slack to occur when a pair of first mounting portions 12 are attached to a step bolt 30 on one side of a utility pole and an adjacent step bolt 30 on the other side of the utility pole. Therefore, when the first support rope 11 is attached to the step bolts 30 on the utility pole, the center portion is located below the lower step bolt 30. Here, the center portion refers to any position between one end and the other end of the first support rope 11.

[0020] Each of the pair of first mounting portions 12 is connected to one end of the first support rope 11. That is, one of the pair of first mounting portions 12 is connected to one end of the first support rope 11, and the other of the pair of first mounting portions 12 is connected to the other end of the first support rope 11. The pair of first mounting portions 12 has a loop portion that can be attached by hooking it onto a step bolt 30 of the utility pole. The pair of first mounting portions 12 is formed of a rope that is integral with the first support rope 11. Specifically, the pair of first mounting portions 12 is formed into a loop by folding back the tip of the first support rope 11 and tying it at the base end side (center side). For example, the pair of first mounting portions 12 is attached to the tip of a control rod or the like, and is lifted up to the step bolt 30 of the utility pole by a worker on the ground operating the control rod or the like, and then hooked onto the step bolt 30.

[0021] The first holding portion 13 is supported by the support rope 11 so as to be movable between the pair of mounting portions 12. The first holding portion 13 includes a ring portion that can hold the wire pulling trolley 50 by hooking onto the hook portion 53 of the wire pulling trolley 50. The first holding portion 13 has enough strength to hold the wire pulling trolley 50. The first holding portion 13 is formed of, for example, metal. As shown in FIG. 1 , when the pair of first mounting portions 12 are attached to a step bolt 30 on one side of a utility pole and an adjacent step bolt 30 on the other side of the utility pole, the first holding portion 13 moves to the center of gravity position due to the weight of the wire pulling trolley 50.

[0022] Second Embodiment The configuration of the second wire pulling trolley support device 20 according to the second embodiment will be described. The second wire pulling trolley support device 20 according to the second embodiment is a device that is attached to an existing communication cable 40 that is strung between utility poles, and supports a wire pulling trolley 50.

[0023] Fig. 3 is a diagram showing the configuration of the second wire drawing pulley support fixture 20 according to the second embodiment. Fig. 4 is a detailed diagram showing the configuration of the second wire drawing pulley support fixture 20 according to the second embodiment.

[0024] As shown in FIG. 3, the second wire pulling pulley support device 20 includes a second support rope 21, a pair of second mounting portions 22, and a second holding portion .

[0025] The second wire pulling trolley support device 20 is attached to the existing communication cable 40 that is strung between utility poles by a pair of second attachment portions 22. The existing communication cable 40 is strung on each utility pole by, for example, a straight suspension method or an intermediate dead-end method. The pair of second attachment portions 22 are hooked onto the existing communication cable 40 at a distance along the existing communication cable 40.

[0026] The second wire drawing pulley support device 20 holds the wire drawing pulley 50 by hooking the hook portion 53 of the wire drawing pulley 50 onto the second holding portion 23. The wire drawing pulley 50 supports the new communication cable with the roller portion 51, and extends the new communication cable by rotating the roller portion 51.

[0027] As shown in Fig. 4, the second support rope 21 is a rope that can be deformed according to the position of the existing communication cable 40 to which it is attached. The second support rope 21 has a strength sufficient to support the pulling pulley 50 and the new communication cable. The second support rope 21 is a string-like member made of twisted fibers or metal wires, such as a nylon rope. The second support rope 21 has a length sufficient to create slack when the pair of second mounting portions 12 are attached to the existing communication cable 40.

[0028] Each of the pair of second mounting portions 22 is connected to each of both ends of the second support rope 21. That is, one of the pair of second mounting portions 22 is connected to one end of the second support rope 21, and the other of the pair of second mounting portions 22 is connected to the other end of the second support rope 21.

[0029] Each of the pair of second mounting portions 22 includes a hook portion 22a, an arm portion 22b, and a ring portion 22c. The hook portion 22a can be mounted by hooking it onto the existing communication cable 40. The arm portion 22b is rotatably supported at the base end of the hook portion 22a via a rotation shaft. The arm portion 22b opens and closes relative to the tip of the hook portion 22a as shown by the arrows in FIG. 4. The ring portion 22c is connected to the arm portion 22b so as to rotate in conjunction with the arm portion 22b. Each portion of the second mounting portion 22 is formed of, for example, metal.

[0030] When ring portion 22c of second attachment portion 22 is attached to the tip of, for example, a control rod or the like, ring portion 22c rotates upward. Arm portion 22b rotates in conjunction with the rotation of ring portion 22c, and the tip of arm portion 22b moves away from the tip of hook portion 22a. On the other hand, when ring portion 22c is detached from the tip of the control rod or the like, ring portion 22c rotates downward due to its own weight. Arm portion 22b rotates in conjunction with the rotation of ring portion 22c, and the tip of arm portion 22b returns to a state in which it is in contact with the tip of hook portion 22a. In other words, second attachment portion 22 is lifted up to the existing communication cable 40 by a ground worker with ring portion 22c attached to the tip of a control rod or the like and arm portion 22b open. Then, the second mounting portion 22 is attached to the existing communication cable 40 by a ground worker operating an operating rod or the like, hooking the hook portion 22a onto the existing communication cable 40 and removing the ring portion 22c from the tip of the operating rod or the like, thereby closing the arm portion 22b and attaching it to the existing communication cable 40.

[0031] A groove into which the existing communication cable 40 engages may be formed on the inner side (the side of the contact surface with the existing communication cable 40) of the hook portion 22a of the second attachment portion 22. This allows the pair of second attachment portions 22 to be fixed at any position on the existing communication cable 40, and the pair of second attachment portions 22 can be spaced apart at any distance.

[0032] The second holding portion 23 is supported by the support rope 21 so as to be movable between the pair of mounting portions 22. The second holding portion 23 includes a ring-shaped portion that can hold the wire pulling pulley 50 by hooking the hook portion 53 of the wire pulling pulley 50. The second holding portion 23 has sufficient strength to hold the wire pulling pulley 50. The second holding portion 23 is formed of, for example, metal. As shown in FIG. 3 , when the pair of second mounting portions 22 are attached to the existing communication cable 40, the second holding portion 23 moves to the center of gravity position due to the weight of the wire pulling pulley 50.

[0033] <Configuration of the wire extension car> FIG. 5 is a diagram showing the configuration of a wire pulling wheel 50 according to this embodiment.

[0034] As shown in FIG. 5, the wire pulling pulley 50 includes a roller portion 51, a support portion 52, a hook portion 53, an arm portion 54, and a ring portion 55.

[0035] The roller portion 51 supports the towing rope and the new communication cable and extends the towing rope and the new communication cable by rotating. The support portion 52 rotatably supports the roller portion 51 at both ends. The hook portion 53 can be attached by hooking it onto the first holding portion 13 of the first wire drawing pulley support device 10 and the second holding portion 23 of the second wire drawing pulley support device 20. The arm portion 54 is rotatably supported at the base end of the hook portion 53 via a rotating shaft. The arm portion 54 opens and closes relative to the tip of the hook portion 53 as shown by the arrow in Figure 5. The ring portion 55 is connected to the arm portion 54 so as to rotate in conjunction with the arm portion 54.

[0036] In the wire drawing pulley 50, when the ring portion 55 is attached to the tip of, for example, an operating rod or the like, the ring portion 55 rotates upward. The arm portion 54 rotates in conjunction with the rotation of the ring portion 55, and the tip of the arm portion 54 moves away from the tip of the hook portion 53. On the other hand, when the ring portion 55 is detached from the tip of the operating rod or the like, the ring portion 55 rotates downward under its own weight. The arm portion 54 rotates in conjunction with the rotation of the ring portion 55, and the tip of the arm portion 54 returns to a state in which it is in contact with the tip of the hook portion 53. In other words, the wire drawing pulley 50, with the ring portion 55 attached to the tip of the operating rod or the like and the arm portion 54 open, is lifted up to the first wire drawing pulley support device 10 and the second wire drawing pulley support device 20 by a worker on the ground. Then, when an operator on the ground operates an operating rod or the like, the hook portion 53 is hooked onto the first holding portion 13 and the second holding portion 23 and the ring portion 55 is removed from the tip of the operating rod or the like, causing the arm portion 54 to close and attach to the first holding portion 13 and the second holding portion 23.

[0037] <Wire extension wheel support method> A description will now be given of a wire pulling trolley installation method using the first wire pulling trolley support fixture 10 and the second wire pulling trolley support fixture 20 according to this embodiment. Figure 6 is a flowchart showing a wire pulling trolley support method using the first wire pulling trolley support fixture 10 and the second wire pulling trolley support fixture 20 according to this embodiment.

[0038] First, as shown in FIG. 6, the wire pulling trolley support fixture (the first wire pulling trolley support fixture 10 or the second wire pulling trolley support fixture 20) is attached to an attachment target located at a high place (step S11).

[0039] Specifically, when installing the first wire pulling pulley support device 10, one of the pair of first mounting portions 12 of the first wire pulling pulley support device 10 is hooked onto the tip of an operating rod or the like. In this state, an operator operates the operating rod or the like, so that one of the pair of first mounting portions 12 is lifted up to the step bolt 30 of the utility pole, which is the installation target and is located at a high place, and hooked onto the step bolt 30 on one side of the utility pole. At this time, the other of the pair of first mounting portions 12 is in a hanging state. This other of the pair of first mounting portions 12 is hooked onto the tip of an operating rod or the like. Then, an operator operates the operating rod or the like, so that it is hooked onto the step bolt 30 on the other side of the utility pole.

[0040] On the other hand, when installing the second wire pulling pulley support device 20, one of the pair of second mounting portions 22 of the second wire pulling pulley support device 20 is hooked onto the tip of an operating rod or the like. In this state, the worker operates the operating rod or the like, so that one of the pair of second mounting portions 22 is lifted up to the existing communication cable 40, which is the installation target and is located at a high place, and is hooked onto any position of the existing communication cable 40. At this time, the other of the pair of second mounting portions 22 is in a hanging state. This other of the pair of second mounting portions 22 is hooked onto the tip of an operating rod or the like. Then, the worker operates the operating rod or the like, so that one of the pair of second mounting portions 22 is hooked onto any position of the existing communication cable 40 that is spaced apart from one of the pair of second mounting portions 22.

[0041] Next, a towing rope for towing the new communication cable is set on the wire pulley 50 (step S12). The towing rope is connected to the new communication cable and is used to tow the new communication cable and place it on the roller portion 51 of the wire pulley 50. The new communication cable is not placed on the wire pulley 50 from the beginning because the new communication cable is heavy, and if it were placed on the wire pulley 50, it would be difficult to lift the wire pulley 50.

[0042] Next, the wire drawing pulley 50 is attached to the first wire drawing pulley support device 10 or the second wire drawing pulley support device 20 (step S13). Specifically, the ring portion 55 of the wire drawing pulley 50 is attached to the tip of an operating rod or the like. As a result, the ring portion 55 rotates upward, and the arm portion 54 rotates in conjunction with the rotation of the ring portion 55, becoming open. In this state, the wire drawing pulley 50 is lifted up to the first wire drawing pulley support device 10 or the second wire drawing pulley support device 20 by a worker on the ground. Then, the worker on the ground operates the operating rod or the like, and the hook portion 53 is hooked onto the first holding portion 13 of the first wire drawing pulley support device 10 or the second holding portion 23 of the second wire drawing pulley support device 20, and the ring portion 55 is removed from the tip of the operating rod or the like, thereby closing the arm portion 54. As a result, the wire drawing pulley 50 is attached to the first holding portion 13 or the second holding portion 23.

[0043] <Summary> As described above, the wire pulley support device in this embodiment comprises a support rope, a pair of mounting sections connected to both ends of the support rope and capable of being attached by hooking onto an elevated attachment target, and a holding section supported by the support rope and movable between the pair of mounting sections to hold the wire pulley. This allows the wire pulley support device to be attached by hooking it onto any location on the step bolt 30 of the utility pole and the existing communication cable 40. By attaching the wire pulley 50 to this wire pulley support device, the wire pulley 50 can be easily attached while easing restrictions on where the wire pulley 50 can be attached.

[0044] Furthermore, each of the pair of mounting portions in this embodiment includes an annular portion that can be attached to the step bolt of the utility pole as the mounting target, thereby making it possible to easily attach the first wire pulley support device 10 to the step bolt 30 of the utility pole.

[0045] Furthermore, each of the pair of mounting portions in this embodiment includes a hook portion that can be attached to a cable strung between utility poles as the attachment target. This allows the second wire-drawing pulley support device 20 to be easily attached to the existing communication cable 40. Furthermore, when the existing communication cable 40 is fastened to the utility pole using the intermediate anchoring method, the existing communication cable 40 is strung so that it passes through the central axis of the utility pole. If the wire-drawing pulley 50 were attached directly to the existing communication cable 40 in this situation, there is a risk that the new communication cable will come into contact with the utility pole during the extension work and be damaged. In contrast, by attaching the wire-drawing pulley 50 to the existing communication cable 40 via the second wire-drawing pulley support device 20 in this embodiment, the new communication cable can be extended away from the utility pole, thereby avoiding contact between the new communication cable and the utility pole and preventing damage to the new communication cable.

[0046] In this embodiment, a groove into which the cable is engaged is provided on the inside of the hook portion, which allows the pair of second attachment portions 22 to be fixed at any position on the existing communication cable 40, and allows the pair of second attachment portions 22 to be spaced apart at any distance.

[0047] In addition, the holding portion in this embodiment includes a ring portion that can hold the wire pulley wheel by hooking the hook portion of the wire pulley wheel, which makes it easy to attach the wire pulley wheel 50 to the wire pulley wheel support device (the first wire pulley wheel support device 10 and the second wire pulley wheel support device 20).

[0048] (Variation) In the above embodiment, the first wire pulley support device 10 is attached to the step bolt 30 of the utility pole, but the present invention is not limited to this. The first wire pulley support device 10 may also be attached to a pole mounting device, such as an arm, to which the first mounting portion 12 can be attached.

[0049] In the above embodiment, the first mounting portion 12 of the first wire pulley support device 10 is a ring-shaped portion formed solely from rope, but the present invention is not limited to this. For example, a shape-maintaining portion that maintains the ring-shaped shape of the rope may be provided at any location on the first mounting portion 12. This allows the step bolt 30 to be easily inserted into the hole in the ring-shaped portion when attaching it to the step bolt 30. Furthermore, the first mounting portion 12 may be formed from a material other than rope, such as a metal material.

[0050] In the above embodiment, the first holding portion 13 and the second holding portion 23 of the first wire pulling chain support device 10 and the second wire pulling chain support device 20 are formed as a single ring portion, but the present invention is not limited to this. The number of ring portions may be increased to match the number of hook portions 53 of the wire pulling chain 50. For example, if the number of hook portions 53 of the wire pulling chain 50 is two, the number of ring portions may be two.

[0051] In the above embodiment, the first support rope 11 and the second support rope 21 of the first pulley support device 10 and the second pulley support device 20 are string-like members made of twisted fibers or metal wires, but the present invention is not limited to this. The first support rope 11 and the second support rope 21 may be string-like members made of multiple members connected together, such as a chain made of linked rings.

[0052] In the above embodiment, the traction rope is set in step S12 as the method for attaching the wire pulleys, but this is not limited to this. For example, the traction rope may be set after the installation of all the wire pulleys 50 is completed. Also, in step S12, a new communication cable may be set from the beginning, instead of a traction rope.

[0053] In the above embodiment, the second wire pulling trolley support device 20 is attached to the existing communication cable 40, but the present invention is not limited to this. If there is no existing communication cable 40 between the utility poles, a temporary suspension wire may be temporarily installed between the utility poles, and the second wire pulling trolley support device 20 may be attached to this temporary suspension wire.

[0054] In the above embodiment, the object of the wire-extension work is an outdoor communication cable, but the present invention is not limited to this. For example, the object of the wire-extension work may be an electric wire, which is an example of a cable.

[0055] Although several embodiments of the present disclosure have been described above, these embodiments can be embodied in various other forms, and various omissions, substitutions, and modifications can be made without departing from the spirit of the invention. These embodiments and modifications are intended to be included in the scope of the inventions and their equivalents as defined in the claims, as well as in the scope and spirit of the inventions.

[0056] <Additional Notes> The matters described in the above embodiments will be supplemented below.

[0057] (Appendix 1) A support rope; A pair of attachment parts connected to both ends of the support rope, respectively, and capable of being attached by being hooked onto an attachment object at a high place; a holding portion that is movably supported by a support rope between the pair of mounting portions and that holds a wire pulley; A wire pulling trolley support device.

[0058] (Appendix 2) Each of the pair of mounting portions includes an annular portion that can be attached to a step bolt of a utility pole as the mounting object, (Appendix 1) A wire pulling trolley support device.

[0059] (Appendix 3) One of the pair of mounting parts is attached to a first step bolt on one side of the utility pole, and the other of the pair of mounting parts is attached to a second step bolt on the other side of the utility pole that is at a different height from the first step bolt. (Appendix 2) A wire pulling trolley support device.

[0060] (Appendix 4) The loop portion is a rope that is integral with the support rope, and is formed by folding back the tip of the support rope and tying it at the base end side. (Appendix 2) A wire pulling trolley support device.

[0061] (Appendix 5) Each of the pair of mounting portions includes a hook portion that can be attached to a cable that is installed between utility poles as the mounting target. (Appendix 1) A wire pulling trolley support device.

[0062] (Appendix 6) A groove for engaging the cable is provided on the inside of the hook portion. (Appendix 5) A wire pulling trolley support device.

[0063] (Appendix 7) The holding portion includes a ring portion that can hold the wire pulley by hooking the hook portion of the wire pulley. (Appendix 1) A wire pulling trolley support device.

[0064] (Appendix 8) A support rope; A pair of attachment parts connected to both ends of the support rope, respectively, and capable of being attached by being hooked onto an attachment object at a high place; a holding portion that is movably supported by a support rope between the pair of mounting portions and that holds a wire pulley; A wire pulling trolley support method using a wire pulling trolley support device comprising: Attaching the wire pulley support tool to the attachment target; attaching the wire pulley to the attachment portion; A wire pulling trolley support method including: [Explanation of symbols]

[0065] 10...1st wire extension wheel support equipment 11. First support rope 12 First mounting part 13...1st holding part 20...Second wire extension wheel support equipment 21 Second support rope 22 Second mounting part 22a Hook part 22b Arm section 22c···Ring section 23...Second holding part 30···Step bolt 40 Existing communication cable 50...wire extension car 51 Roller part 52...Support part 53 Hook part 54 Arm section 55···Ring section

Claims

1. A support rope; A pair of attachment parts connected to both ends of the support rope, respectively, and capable of being attached by being hooked onto an attachment object at a high place; a holding portion that is movably supported by a support rope between the pair of mounting portions and that holds a wire pulley; A wire pulling trolley support device.

2. Each of the pair of mounting portions includes an annular portion that can be attached to a step bolt of a utility pole as the mounting object, The wire pulley support device according to claim 1.

3. One of the pair of mounting parts is attached to a first step bolt on one side of the utility pole, and the other of the pair of mounting parts is attached to a second step bolt on the other side of the utility pole that is at a different height from the first step bolt. The wire pulley support device according to claim 2.

4. The loop portion is a rope that is integral with the support rope, and is formed by folding back the tip of the support rope and tying it at the base end side. The wire pulley support device according to claim 2.

5. Each of the pair of mounting portions includes a hook portion that can be attached to a cable that is installed between utility poles as the mounting target. The wire pulley support device according to claim 1.

6. A groove for engaging the cable is provided on the inside of the hook portion. The wire pulling trolley support device according to claim 5.

7. The holding portion includes a ring portion that can hold the wire pulley by hooking the hook portion of the wire pulley. The wire pulley support device according to claim 1.

8. A support rope; A pair of attachment parts connected to both ends of the support rope, respectively, and capable of being attached by being hooked onto an attachment object at a high place; a holding portion that is movably supported by a support rope between the pair of mounting portions and that holds a wire pulley; A wire pulling trolley support method using a wire pulling trolley support device comprising: Attaching the wire pulley support tool to the attachment target; attaching the wire pulley to the attachment portion; A wire pulling trolley support method including:

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