Complex rope control device

Abstract

To provide an auxiliary rope control device capable of narrowing a construction yard.SOLUTION: And an assist rope 31 having one end connected to the blade 15a to 15c and the other end connected to a rope support 32 provided on an upper body 21 of the mobile jib crane 20, wherein the jib 24 is provided with a rope guide 33 for guiding the assist rope 31 between the blade 15a to 15c and the rope support 32.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present disclosure relates to a kaishaku rope control device that controls the swinging of a suspended load. [Background technology]

[0002] When installing a wind turbine, a nacelle is installed on top of the tower body, which is the support for the wind turbine for wind power generation, a hub is then attached to the nacelle, and then multiple blades, which are long members, are attached to the hub. To lift the components of the wind turbine to the top of the wind turbine tower, a mobile jib crane is installed adjacent to the wind turbine tower, and then the jib is raised and lowered to lift the elemental members such as the blades to the top of the wind turbine tower.

[0003] Wind power generation facilities are constructed in windy locations with many windy days. When lifting the blade, which is a long component, as a suspended load, the effects of wind must be taken into consideration. Therefore, a kaishaku rope is connected to the blade to control the blade's load swing. The other end of the kaishaku rope is connected to a rope support such as a winch installed at a location away from the mobile crane.

[0004] Patent Document 1 describes a technique for using a kamikaze rope to lift blades when installing offshore wind power generation equipment. [Prior art documents] [Patent documents]

[0005] [Patent Document 1] Patent No. 7151236 Summary of the Invention [Problem to be solved by the invention]

[0006] In wind power generation facilities, wind turbines must be installed at higher elevations to increase power generation efficiency. In this case, when attempting to control a high-mounted load (e.g., a blade) with a kaishaku rope, ideally the kaishaku rope should be pulled to the ground so that it extends diagonally at an angle of at least 45 degrees from the load. This means that the location of the rope support unit (e.g., a winch) to which the other end of the kaishaku rope hanging from the blade is connected becomes farther away from the mobile crane. The higher the tower body of the wind power generation facility, the farther away the rope support unit 32 is located from the mobile crane's installation location. Accordingly, the construction yard for installing the wind turbine must be large enough to accommodate the rope support unit 32.

[0007] On the other hand, wind turbines are often installed in narrow locations such as mountainous regions. This is because such locations may have steep slopes or be areas where forests are protected. In such cases, it may be difficult to secure the necessary large construction yard, including a place to install the rope support parts.

[0008] Patent Document 1 describes a technique for using a kishaku rope to lift the blades when installing offshore wind power generation equipment. The technique in Patent Document 1 requires that a deflection roller, which serves as a guide for the kishaku rope, be attached to the main body of the wind turbine tower. [Means for solving the problem]

[0009] A kamikaze rope control device that solves the above problem comprises a crane with a jib and a kamikaze rope that has one end connected to the suspended load and the other end connected to a rope support part, and the jib is provided with a rope guide part that guides the kamikaze rope between the suspended load and the rope support part. [Effects of the Invention]

[0010] According to the present disclosure, it is possible to provide a kamikaze rope control device that makes it possible to narrow the construction yard. [Brief explanation of the drawings]

[0011] [Figure 1] FIG. 10 is a diagram showing a state in which a blade is lifted and transported using a mobile jib crane having a rope guide section provided on the jib in the present disclosure. [Figure 2] This is a diagram showing the state in which a blade is lifted and transported by a mobile jib crane that does not have a rope guide section on the jib. DETAILED DESCRIPTION OF THE INVENTION

[0012] An embodiment of a kaishaku rope control device that controls a kaishaku rope will be described with reference to FIGS. 1 and 2. FIG. <Wind turbine> As shown in FIG. 1, the wind turbine generator 10 comprises a tower body 11 installed on a foundation, a nacelle 12 installed on the top of the tower body 11, and a rotor 13 attached to the nacelle 12.

[0013] The tower body 11 is formed by stacking multiple towers 11b, 11m, and 11t. The tower body 11 is formed by, from the bottom up, a bottom tower 11b, multiple middle towers 11m, and a top tower 11t. Note that the number of middle towers 11m is not particularly limited to this.

[0014] The rotor 13 includes a hub 14 and a plurality of blades 15a, 15b, and 15c extending radially from the hub 14. The hub 14 is provided with a plurality of blade attachment holes to which the base ends of the plurality of blades 15a to 15c are attached, respectively. The three blades 15a to 15c are provided at 120-degree intervals in the circumferential direction of the hub 14.

[0015] The rotor 13 is constructed by transporting the hub 14 to the top of the tower body 11 and assembling it to the nacelle 12, and then transporting the blades 15a to 15c sequentially to the top of the tower body 11 and assembling them to the hub 14. The rotor 13 may also be constructed by transporting the blades 15a to 15c assembled to the hub 14 to the top of the tower body 11 and assembling them to the nacelle 12.

[0016] <Mobile jib crane> When constructing the wind turbine generator 10 as described above, the bottom tower 11b, middle tower 11m, and top tower 11t are stacked in this order by the mobile jib crane 20. Furthermore, the nacelle 12 is installed on top of the top tower 11t by the mobile jib crane 20, and then the hub 14 is installed. After that, the blades 15a to 15c are attached to the hub 14 in this order by the mobile jib crane 20.

[0017] The mobile jib crane 20 comprises an upper body 21 and a carrier 22. The upper body 21 is rotatably installed relative to the carrier 22. The upper body 21 comprises a telescopic boom 23 and a jib 24 attached to the tip of the boom 23. The mobile jib crane 20 may be a wheel crane, crawler crane, truck crane, crawler crane, or the like. A wire 26 attached to a hook 25 is suspended from the tip of the jib 24. The jib 24 lifts the multiple towers 11b, 11m, and 11t when constructing the tower body 11, and further lifts and transports the nacelle 12 and hub 14 in sequence.

[0018] In particular, when lifting and transporting blades 15a to 15c, which are long members, blades 15a to 15c are hung from hook 25 via hoisting balance 27. That is, hoisting balance 27 is installed with blades 15a to 15c in a horizontal position. Hook 25 is then hung from hoisting balance 27. When lifting and transporting blades 15a to 15c, a beheading rope 31 is connected to blades 15a to 15c to stabilize their position.

[0019] There are at least two kaishaku ropes 31, and one end of each of the at least two kaishaku ropes 31 is connected directly or indirectly to one side and the other side of the center in the longitudinal direction of each of the blades 15a to 15c. For example, one end of each kaishaku rope 31 is directly connected to each of the blades 15a to 15c, or to the hoist 27. The other end of each kaishaku rope 31 is connected to a rope support part 32 such as a winch. The rope support part 32 is arranged on the mobile jib crane 20 or in the vicinity of the mobile jib crane 20. In this embodiment, the rope support part 32 is provided on the upper body 21.

[0020] The jib 24 is provided with a rope guide unit 33. The rope guide unit 33 includes a guide support unit 34 extending in a direction intersecting the longitudinal direction of the jib 24 and a guide unit 35 around which the escalator rope 31 is wrapped. The guide support unit 34 is, for example, a long steel member and is fixed to the jib 24. The guide support unit 34 is located below the hub 14, which is the destination of the blades 15a to 15c. As an example, the rope guide unit 33 is located at a height such that, when the blades 15a to 15c, which are the loads, are lifted to their highest position, an angle formed between a perpendicular line extending from the ground to the blades 15a to 15c and the escalator rope 31 extending from the blades 15a to 15c to the guide unit 35 is ideally 45 degrees. As an example, the guide support unit 34 is located on the base end side of the jib 24.

[0021] The guide sections 35 are provided on both sides of the long guide support section 34 and are composed of pulleys, arcuate surfaces, etc. The number of guide sections 35 provided is at least equal to the number of the escalator ropes 31. One end of each escalator rope 31 is connected to the blades 15a to 15c, which are the suspended load, and is guided by rope guide sections 33 along the way.

[0022] As a result, the extension direction of the kamikaze ropes 31 extending from the blades 15a to 15c is bent at the guide parts 35, and extends in the direction of the jib 24 and the boom 23. The other end of the kamikaze rope 31 is connected to a rope support part 32 provided on the upper body 21. In this way, the mobile jib crane 20 also functions as a kamikaze rope control device that controls the kamikaze ropes 31.

[0023] <Operation of this embodiment> The kaishaku rope 31 is connected to the rope support part 32 through the rope guide part 33 provided on the jib 24, so that it hangs down at or near the position of the mobile jib crane 20. Therefore, the rope support part 32 can be installed at the position of the upper body 21 of the mobile jib crane 20.

[0024] <Effects of this embodiment> (1) The escalator rope 31 is connected to the rope support part 32 through the rope guide part 33 provided on the jib 24. As a result, the escalator rope 31 extending from the blades 15a to 15c to the guide part 35 is bent in its extending direction by the rope guide part 33 and extends near the jib 24 and the boom 23. Then, it is connected to the rope support part 32 provided on the upper body 21. This makes it possible to narrow the construction yard.

[0025] That is, as shown in Figure 2, if the rope guide unit 33 is not provided on the jib 24, the execution rope 31 will be pulled to the ground so that it ideally extends diagonally at an angle of approximately 45 degrees with respect to the perpendicular line extending from the ground to the blades 15a-15c. In this case, the position of the rope support unit 32 will be located away from the mobile jib crane 20. As a result, the construction yard will become wider. In this regard, if the rope guide unit 33 is provided on the jib 24, the other end of the execution rope 31 will hang down near the mobile jib crane 20 and can be connected to the rope support unit 32 provided on the upper body 21, thereby narrowing the construction yard.

[0026] (2) Since the rope support part 32 is provided on the upper body 21 of the mobile jib crane 20, it is no longer necessary to place the rope support part 32 in a location distant from the mobile jib crane 20, as shown in Figure 2. Therefore, the construction yard can be made narrower.

[0027] (3) Even if the load to be suspended is a long blade 15a to 15c that is easily affected by wind, the installation position of the rope support part 32 can be set on the upper body 21 of the mobile jib crane 20, so the construction yard can be made narrower.

[0028] <Modification> This embodiment can be modified as follows: This embodiment and the following modifications can be combined and implemented within the scope of technical compatibility.

[0029] A larger number of the beheading ropes 31 may be used as long as they are connected to one side and the other side of the center in the longitudinal direction of the long blades 15a to 15c. In such a case, the rope guide unit 33 may be provided with guide units 35 according to the number of the beheading ropes 31. The rope support units 32 may also be provided according to the number of the beheading ropes 31.

[0030] The location where the rope support part 32 is provided is not limited to the upper body 21 of the mobile jib crane 20. For example, it may be provided in the vicinity of the mobile jib crane 20. The crane with a jib may be other than the mobile jib crane 20. For example, it may be a tower crane in which a crane body with a jib is provided at the top of a mast so that it can rotate.

[0031] The rope support unit 32 is not limited to a winch. When the rope support unit 32 is installed near the mobile jib crane 20, it may be a construction machine other than the mobile jib crane 20, such as a crane.

[0032] The suspended load is not limited to the blades 15a to 15c of the wind power generator 10. The suspended load may be the nacelle 12, the hub 14, or the like. The structure is also not limited to the wind power generator 10, but may be an element of a tower-like structure such as a radio tower, or an element of a high-rise building for use as a complex facility.

[0033] <Additional Notes> Further technical ideas that can be understood from the above-described embodiments and modifications will be described below. (Appendix 1) The rope guide that guides the kaishakunin rope is located on the jib at a position below the destination of the suspended load. Execution rope control device.

[0034] (Appendix 2) A method for lifting and transporting a suspended load using a crane equipped with a jib, comprising: The jib includes a rope guide portion for guiding the kaisaku rope, The kaishaku rope, one end of which is connected to the suspended load, is connected to the rope support part via the rope guide part to stabilize the posture of the suspended load. Lifting and transport method. [Explanation of symbols]

[0035] 10...wind turbine generator, 11...tower body, 11b...bottom tower, 11m...middle tower, 11t...top tower, 12...nacelle, 13...rotor, 14...hub, 15a-15c...blades, 20...mobile jib crane, 21...upper body, 22...carrier, 23...boom, 24...jib, 25...hook, 26...wire, 27...hoisting beam, 31...assistance rope, 32...rope support part, 33...rope guide part, 34...guide support part, 35...guide part.

Claims

1. A crane with a jib, One end of the rope is connected to the load, and the other end of the rope is connected to the rope support part. The jib is provided with a rope guide portion that guides the kaisaku rope between the load and the rope support portion. Execution rope control device.

2. The rope support is provided on the upper body of the crane. The kaishakunin rope control device according to claim 1.

3. The rope support is a winch The interception rope control device according to claim 1 or 2.

4. The suspended load is a long member, The execution rope is at least two, At least two of the kaishakunin ropes are connected to one side and the other side of the center in the longitudinal direction of the elongated member, The rope support parts are provided in accordance with the number of the kaishakunin ropes. The kaishakunin rope control device according to claim 1.

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