Gondola device

Abstract

A gondola device comprises: a horizontal front scaffolding frame (4) that faces the back of a blade (3) as well as a first and a second side scaffolding frame (5, 6) that are mounted to the front scaffolding frame (4) so as to be able to move freely in the horizontal direction; a snubber member (7) that is telescopically mounted on both sides of the front scaffolding frame (4) and that abuts the outer face of a tower (1); a first lifting device (9) that is provided on the front scaffolding frame (4) as well as a second and a third lifting device (10, 11) that are mounted on the first and the second side scaffolding frames (5, 6), respectively, so as to be able to swing; a first and a second driving device (15, 16) that are provided on the front scaffolding frame 4 and that drive the firstand the second side scaffolding frames (5, 6), respectively, in the horizontal direction; and a first, a second, and a third pull rope (12, 13, 14) that are provided between a nacelle (2) and the first, the second, and the third lifting device (9, 10, 11).

Description

technical field [0001] The present invention relates to a gondola device suitable for maintenance of blades of a wind power generating device. Background technique [0002] Such a wind turbine generator includes a columnar tower, a pod mounted on the tower, and blades provided in the pod, and the blades are rotated to operate the generator. [0003] After several years of construction of the above-mentioned blades, the coating on the outer surface will fall off or deteriorate due to wind blowing, lightning strikes and ultraviolet radiation, which will not only damage the function of the blade, but also have an unsightly appearance. [0004] Therefore, maintenance of the outer surface finishing, repair, etc. of the blade is required, and therefore, as disclosed in JP2004-293455(A) or JP2012-7525(A), a gondola device for maintenance has been developed. [0005] The gondola device shown in JP2004-293455(A) is a device that elevates the gondola attached to the outer surface of ...

AI Technical Summary

Problems solved by technology

[0015] and, for example, as Figure 14 As shown, when the gondola is arranged on the outside of the blade 114, the support frame 207 is extended toward the tower 1 and the roller 209 is brought into contact with the tower 1. However, according to the elongation, the roller 209 faces clockwise. When the torque increases, there is a danger that the working platform 201 will tilt clockwise, and it will become difficult to maintain the level. Therefore, the counterweight 208 is extended in the opposite direction to the support frame 207 to seek a balance with the increased moment, and the working platform is always maintained. 201 levels

[0016] However, since each of the above-mentioned conventional hanging basket devices is lifted and lowered via the pulling rope, the structure can be simplified compared with the hanging basket devices shown in the above-mentioned patent documents 1 and 2. On the other hand, since the pulling rope is two Therefore, it is difficult to maintain the level, so there is a disadvantage that a correction method for maintaining the level is required

[0017] That is, due to Figure 12 The hanging basket device 100 needs a parallelogram parallel frame 106 and wire ropes 109, 110 whose lengths on both sides can be adjusted freely. Therefore, the corresponding structure becomes complicated, and the telescopic operation of the wire ropes needs to be implemented on the platform every time. Disadvantages in performance, economy, and operability

[0018] also, Figure 14 The illustrated hanging basket device 200 is also provided with a counterweight 208 for horizontal maintenance, so the structure becomes correspondingly complicated, and the telescopic operation needs to be performed every time, which is still disadvantageous in terms of processability, economy, and operability.

[0019] In addition, since the gondola device 200 only arranges the working platform on the outside or inside of the blade 114, not only the working range for the blade 114 is limited, but also when it is arranged outside, for example, the following disadvantages also exist. That is, the traction rope 205 crosses the blade 114 obliquely, the two interfere, and there is a risk of damage to the blade 114 or the traction rope 205

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