A climbing assembly for maintenance and protection of modular wind turbine towers

Abstract

This application discloses a climbing assembly for maintenance and protection of prefabricated wind turbine towers, relating to the field of wind turbine tower technology. The application includes a ladder with two sliding rails. Each rail has a fixing plate, protective components, and limiting components. The fixing plate has a connecting part, and a safety rope is connected to the connecting part. The protective components include guardrails spaced apart from the rails, with multiple connecting rods hinged to the rails. One of the connecting rods has a locking component on it. This application eliminates two existing protection methods. Compared to the first method, it effectively reduces the number of guardrails and eliminates the need to directly install guardrails on the ladder, while also reducing space occupation when not in use. Compared to the second method, it uses two sliding rails instead of guide rails, working in conjunction with a safety rope. Since the two sliding rails are located on opposite sides of the ladder, they do not restrict the climbing space for workers.

Description

Technical Field

[0001] This application relates to the field of wind turbine tower technology, specifically to a climbing component for maintenance and protection of assembled wind turbine towers. Background Technology

[0002] Wind power, or wind energy generation, is a clean and renewable energy source that converts the kinetic energy of wind into electrical energy. A wind turbine tower is the supporting structure for a wind turbine generator, typically a modular column or cone structure. When maintenance and protection of a wind turbine generator are required, workers need to climb to the top using a ladder on the wind turbine tower. Currently, there are two common methods for worker protection: the first involves installing multiple evenly distributed guardrails from bottom to top on the ladder, forming a cage structure between the ladder and the guardrails; the second involves installing a guide rail in the middle of the ladder, used in conjunction with a safety rope. However, both methods have drawbacks. The first method takes up more space, and installing multiple guardrails is time-consuming; the second method restricts the climbing space and reduces climbing speed. Therefore, a climbing component for maintenance and protection of modular wind turbine towers is proposed. Summary of the Invention

[0003] The purpose of this application is to provide a climbing assembly for maintenance and protection of assembled wind turbine towers, in order to solve the problems mentioned in the background art.

[0004] To achieve the above objectives, this application specifically adopts the following technical solution:

[0005] A climbing assembly for maintenance and protection of prefabricated wind turbine towers includes a ladder with two sliding rails. Each rail has a fixing plate, protective components, and limiting components. The fixing plate has a connecting part to which a safety rope is connected. The protective components include guardrails spaced apart from the rails. Multiple connecting rods are hinged between the guardrails and the rails. One of the connecting rods has a locking component on it, which locks or unlocks the guardrail. Multiple guardrails are positioned between two guardrails, and limiting components limit or unlock the guardrails.

[0006] Furthermore, a lifting rod is provided on the slide rail, and a lifting ring is provided on the lifting rod.

[0007] Furthermore, the connecting part includes a connecting plate disposed on the fixed plate, and a connecting ring is disposed on the connecting plate, the safety rope being connected to the connecting ring.

[0008] Furthermore, the fixed plate is provided with a receiving groove, and a rotating shaft is rotatably arranged in the receiving groove. The connecting plate is arranged on the rotating shaft and abuts against and overlaps with the ladder. A first torsion spring sleeved on the rotating shaft is provided between the connecting plate and the receiving groove.

[0009] Furthermore, the locking component includes a sleeve disposed on the connecting rod, a wedge-shaped block disposed on the sleeve, a locking hole disposed on the wedge-shaped block, a fixed cylinder disposed on the protective rod that abuts against and overlaps with the sleeve, a sliding rod disposed inside the fixed cylinder, a locking block disposed at one end of the sliding rod that engages with the locking hole, and an elastic element disposed between the other end and the protective rod.

[0010] Furthermore, the fixed cylinder has a notch, and the sliding rod is provided with a gripping rod that passes through the notch and engages with the fixed cylinder.

[0011] Furthermore, the elastic element includes a relief groove formed on the protective rod, a positioning block that engages with the relief groove is provided on the slide rod, and a return spring sleeved on the positioning block is provided between the slide rod and the protective rod.

[0012] Furthermore, the limiting component includes a fixing band and a connecting band both disposed on the slide rail. The fixing band has a through hole, the connecting band has a protrusion, and the protrusion has a hemispherical block that engages with the through hole.

[0013] Furthermore, support blocks are provided on opposite sides of both guard rods, and a support rod that abuts and overlaps with the support block is hinged to one of the guard rods. A locking part is provided on one of the guard rods to lock or unlock the support rod.

[0014] Furthermore, the locking part includes two crossbars disposed on the protective rod, one of which is hinged to a stop bar that abuts against the support rod, and a second torsion spring is disposed at the hinge of the stop bar, and the other crossbar is disposed to have two stops.

[0015] The beneficial effects of this application are as follows:

[0016] This application abandons the two existing protective methods. Compared with the first method, it effectively reduces the number of guardrails and eliminates the need to install guardrails directly on the ladder. It also reduces the space occupied when not in use. Compared with the second method, it uses two sliding rails instead of guide rails and works with a safety rope. Since the two sliding rails are located on both sides of the ladder, they do not restrict the climbing space of the workers or affect the climbing speed, thus making it more practical. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural view of this application;

[0018] Figure 2 This is a three-dimensional view of part of the structure of this application;

[0019] Figure 3 This application Figure 2Enlarged view of point A in the middle;

[0020] Figure 4 This application Figure 2 Enlarged view of point A in the middle;

[0021] Figure 5 This is another structural perspective view of this application;

[0022] Figure 6 This application Figure 5 Enlarged view of point C in the middle;

[0023] Figure 7 This application Figure 5 Enlarged view of point D in the middle;

[0024] Figure 8 This application Figure 5 A three-dimensional sectional view;

[0025] Figure 9 This application Figure 8 Enlarged view of point E in the middle.

[0026] Reference numerals: 1. Ladder; 2. Slide rail; 3. Fixing plate; 4. Protective component; 401. Protective rod; 402. Connecting rod; 403. Locking component; 40301. Sleeve; 40302. Wedge block; 40303. Locking hole; 40304. Fixing cylinder; 40305. Slide rod; 40306. Notch; 40307. Grip rod; 40308. Clearance groove; 40309. Positioning block; 403010. Return spring; 403011. Locking block; 4 04. Guardrail; 5. Limiting component; 501. Fixing strap; 502. Connecting strap; 503. Through hole; 504. Protrusion; 505. Hemispherical block; 6. Connecting part; 601. Connecting plate; 602. Connecting ring; 7. Hanging rod; 8. Hanging ring; 9. Receiving groove; 10. Rotating shaft; 11. First torsion spring; 12. Support block; 13. Support rod; 14. Locking part; 1401. Crossbar; 1402. Stop bar; 1403. Second torsion spring; 1404. Stop block. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings.

[0028] like Figures 1-9As shown in one embodiment of this application, a climbing assembly for maintenance and protection of assembled wind turbine towers includes a ladder 1, which is vertical. Two slide rails 2 are slidably mounted on the ladder 1, and are vertically oriented and slide along the vertical direction. The two slide rails 2 are symmetrically distributed. Each slide rail 2 is provided with a fixing plate 3, a protective component 4, and a limiting component 5. The fixing plate 3 is fixed to the slide rail 2, and the two fixing plates 3 are symmetrically distributed. A connecting part 6 is provided on the fixing plate 3, and a safety rope is connected to the connecting part 6. The protective component 4 includes protective rods 401 spaced apart from the slide rails 2, which are vertical. Multiple connecting rods 402 are hinged between the protective rods 401 and the slide rails 2. One of the connecting rods 402 and the protective rod 401 is provided with a locking component 402. 3. The protective rod 401 is locked or unlocked by the locking member 403. The connecting rod 402 can rotate within a 90-degree range, which means that the connecting rod 402 can rotate from the vertical direction to the horizontal direction or from the horizontal direction to the vertical direction. When the connecting rod 402 is in the horizontal direction, it is locked by the locking member 403, thereby locking the protective rod 401. Multiple guardrails 404 are provided between the two protective rods 401. The guardrails 404 are arc-shaped and fixed on the two protective rods 401. The multiple guardrails 404 are all in the horizontal direction and are arranged in an array along the vertical direction. The limiting member 5 limits or unlocks the protective rod 401. When the connecting rod 402 is in the vertical direction, the limiting member 5 limits the protective rod 401.

[0029] In the initial state, the guardrail 401 is close to the slide rail 2, and the connecting rod 402 is in a vertical direction. The guardrail 401 is limited by the limiting member 5. At this time, the space occupied by the multiple guardrails 404 is small. When the staff needs to maintain and protect the wind turbine, the limit member 5 is used to release the limit on the guardrail 401, so that the guardrail 401 moves away from the slide rail 2. The connecting rod 402 rotates from the vertical direction to the horizontal direction. The guardrail 401 is locked by the locking member 403. At this time, the multiple guardrails 404 and the climbing ladder 1 form a cage structure. The staff crawls into the cage structure, connects the safety rope to the connecting part 6, and then climbs up the climbing ladder 1. During the climbing process, the two slide rails 2 slide upward together. The sliding of the slide rails 2 can be driven by the staff, or a lifting mechanism can be set at the top of the tower. The lifting mechanism drives the slide rails 2 to slide. The cage structure protects the staff. The slide rails 2 are used in conjunction with the safety rope to further enhance the protection.

[0030] In summary, this application abandons the two protection methods in the prior art. Compared with the first method, it effectively reduces the number of guardrails 404 and does not require the guardrails 404 to be directly installed on the ladder 1. At the same time, it can reduce the space occupied when not in use. Compared with the second method, it uses two slide rails 2 instead of guide rails and works with safety ropes. Since the two slide rails 2 are located on both sides of the ladder 1, they do not restrict the climbing space of the workers and do not affect the climbing speed, so it is more practical.

[0031] like Figure 3 As shown, in some embodiments, a hanger 7 is provided on the slide rail 2. The hanger 7 is vertical and fixed to the top of the slide rail 2. A lifting ring 8 is provided on the hanger 7. The lifting ring 8 is vertical and fixed to the free end of the hanger 7.

[0032] Referring to the above, when choosing to install a lifting mechanism at the top of the tower, the lifting mechanism is connected to the lifting ring 8 so as to drive the slide rail 2 to slide.

[0033] like Figure 4 As shown, in some embodiments, the connecting part 6 includes a connecting plate 601 disposed on the fixing plate 3, a connecting ring 602 disposed on the connecting plate 601, the connecting ring 602 being vertical and fixed on the connecting plate 601, and the safety rope being connected to the connecting ring 602.

[0034] Referring to the above, when climbing, connect the connecting rope to the connecting ring 602. The connection method can be to hook the hook to the connecting ring 602, which makes the operation more convenient.

[0035] like Figure 4 As shown, in some embodiments, a receiving groove 9 is provided on the fixed plate 3, and a rotating shaft 10 is rotatably arranged in the receiving groove 9. The rotating shaft 10 is in a horizontal direction. A connecting plate 601 is arranged on the rotating shaft 10 and abuts against the ladder 1. The connecting plate 601 is fixed on the rotating shaft 10 and its free end abuts against the ladder 1. A first torsion spring 11 is provided between the connecting plate 601 and the receiving groove 9 and is sleeved on the rotating shaft 10. The two ends of the first torsion spring 11 are fixedly connected to the connecting plate 601 and the receiving groove 9 respectively.

[0036] Referring to the above, in the initial state, the first torsion spring 11 is in its natural state. At this time, the connecting plate 601 tends to be vertical and its free end is away from the ladder 1. During the climbing process, since the body is in a vertical state, the connecting plate 601, the rotating shaft 10, and the first torsion spring 11 will not move significantly. When the worker misses a step, the body will lean back and tend to be horizontal. At this time, the connecting plate 601 and the rotating shaft 10 will move together to tend to be horizontal. The first torsion spring 11 is compressed, and the connecting plate 601 and the ladder 1 collide and connect, thereby preventing the worker from falling and thus playing a fall prevention role.

[0037] like Figure 9 As shown, in some embodiments, the locking member 403 includes a sleeve 40301 disposed on the connecting rod 402, the sleeve 40301 being fixed to the connecting rod 402, a wedge block 40302 disposed on the sleeve 40301, the wedge block 40302 being fixed to the sleeve 40301, a locking hole 40303 being formed on the wedge block 40302, and a fixing sleeve 4030 that abuts against and overlaps with the sleeve 40301 on the protective rod 401. 4. The fixed cylinder 40304 is fixed on the guard rod 401. A sliding rod 40305 is slidably arranged inside the fixed cylinder 40304. The sliding rod 40305 slides along the length of the fixed cylinder 40304. One end of the sliding rod 40305 is provided with a locking block 403011 that is inserted into the locking hole 40303. An elastic element is provided between the other end and the guard rod 401. The locking block 403011 is fixedly connected to the sliding rod 40305.

[0038] Referring to the above, in the initial state, the elastic element is in its natural state, the connecting rod 402 is vertical, and the sliding rod 40305 is away from the protective rod 401. When the connecting rod 402 rotates to the horizontal direction, it drives the sleeve 40301 and the wedge block 40302 to move together. The locking block 403011 and the wedge block 40302 abut against each other. Through the transition effect of the inclined plane, the locking block 403011 and the sliding rod 40305 are forced to move together to be close to the protective rod 401, and the elastic element is compressed. Then, the fixing cylinder 40304 and the sleeve 40301 abut against each other, and the elastic element returns to its natural state. In the initial state, the slide bar 40305 and the locking block 403011 move together to the initial position, and the locking block 403011 is inserted into the locking hole 40303. At this time, the connecting rod 402 cannot rotate, and the protective rod 401 cannot move, so as to lock the protective rod 401. Conversely, the slide bar 40305 is driven to slide close to the protective rod 401, which drives the locking block 403011 to move together to exit the locking hole 40303. The elastic element is squeezed, and then the connecting rod 402 can rotate to the vertical direction. Then the slide bar 40305 is released, and the protective rod 401 can be unlocked.

[0039] like Figure 9 As shown, in some embodiments, the fixed cylinder 40304 is provided with a notch 40306, and the slide rod 40305 is provided with a gripping rod 40307 that passes through the notch 40306 and engages with the fixed cylinder 40304. The gripping rod 40307 is fixedly connected to the slide rod 40305.

[0040] Referring to the above, when using the device, pressing or releasing the grip lever 40307 will cause the slide lever 40305 to slide, making operation more convenient.

[0041] like Figure 9As shown, in some embodiments, the elastic element includes a relief groove 40308 formed on the protective rod 401, the relief groove 40308 being horizontal, a positioning block 40309 provided on the slide rod 40305 that is inserted into the relief groove 40308, the positioning block 40309 being fixedly mounted on the slide rod 40305, and a return spring 403010 sleeved on the positioning block 40309 being provided between the slide rod 40305 and the protective rod 401, the two ends of the return spring 403010 being fixedly connected to the slide rod 40305 and the protective rod 401 respectively;

[0042] Referring to the above, when the slide bar 40305 slides, it drives the positioning block 40309 to move together. The positioning block 40309 will enter or exit the clearance groove 40308, and the return spring 403010 will be squeezed or returned to its natural state. Through the cooperation of the positioning block 40309 and the clearance groove 40308, the return spring 403010 is limited, preventing the return spring 403010 from deviating from its original movement trajectory.

[0043] like Figure 6 As shown, in some embodiments, the limiting member 5 includes a fixing band 501 and a connecting band 502 both disposed on the slide rail 2. The fixing band 501 and the connecting band 502 are both fixed on the slide rail 2 and both are made of rubber. The fixing band 501 has a through hole 503, and the connecting band 502 has a protrusion 504. The protrusion 504 has a hemispherical block 505 that is inserted into the through hole 503. The connecting band 502, the protrusion 504 and the hemispherical block 505 are fixedly connected in sequence.

[0044] Referring to the above, in the initial state, both the fixing strap 501 and the connecting strap 502 pass around and are close to the guard rod 401. The hemispherical block 505 passes through the through hole 503. The guard rod 401 is limited by the fixing strap 501 and the connecting strap 502. When it is necessary to release the guard rod 401 from the limit, the fixing strap 501 or the connecting strap 502 is pulled, which forces elastic deformation. The diameter of the through hole 503 increases, causing the hemispherical block 505 to exit the through hole 503. Then the fixing strap 501 or the connecting strap 502 is released, and the guard rod 401 can move, so as to release the limit of the guard rod 401.

[0045] like Figures 5-7 As shown, in some embodiments, support blocks 12 are provided on opposite sides of the two guard rods 401. The support blocks 12 are fixed on the guard rods 401. A support rod 13 that abuts and overlaps with the support block 12 is hinged on one of the guard rods 401. A locking part 14 is provided on one of the guard rods 401. The support rod 13 is locked or unlocked by the locking part 14.

[0046] Referring to the above, in the initial state, the support rod 13 is vertical and locked by the locking part 14, preventing it from rotating. When the worker needs to take a short break during the climb, the locking part 14 is used to unlock the support rod 13, allowing it to rotate to the horizontal direction. The support rod 13 then contacts and overlaps with both support blocks 12, allowing the worker to rest briefly while supported by the support rod 13. After resting, the support rod 13 is rotated to the vertical direction and locked by the locking part 14, allowing the worker to continue climbing.

[0047] like Figure 7 As shown, in some embodiments, the locking part 14 includes two horizontal bars 1401 disposed on the protective rod 401. The horizontal bars 1401 are horizontal and fixed on the protective rod 401. The two horizontal bars 1401 are symmetrically distributed. One of the horizontal bars 1401 is hinged to a stop bar 1402 that abuts against the support rod 13. A second torsion spring 1403 is disposed at the hinge of the stop bar 1402. The two ends of the second torsion spring 1403 are fixedly connected to the stop bar 1402 and the horizontal bar 1401, respectively. The other horizontal bar 1401 is provided with two blocks 1404. Both blocks 1404 are fixed on the horizontal bar 1401 and are symmetrically distributed.

[0048] Referring to the above, in the initial state, the support rod 13 is vertical and located between the two horizontal bars 1401. The second torsion spring 1403 is in its natural state, and the stop bar 1402 is horizontal and abuts against the support rod 13. The stop bar 1402 blocks the support rod 13, thereby locking the support rod 13 and preventing it from rotating. Conversely, driving the stop bar 1402 to rotate to the vertical direction forces the second torsion spring 1403 to be compressed. The support rod 13 loses the obstruction of the stop bar 1402 and can rotate to the horizontal direction. Finally, releasing the stop bar 1402 allows the second torsion spring 1403 to return to its natural state, thereby unlocking the support rod 13.

[0049] The above description of the disclosed embodiments enables those skilled in the art to make or use this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A climbing assembly for maintenance and protection of assembled wind turbine towers, comprising a ladder (1), characterized in that, The ladder (1) is slidably provided with two slide rails (2). The slide rails (2) are provided with a fixing plate (3), a protective component (4), and a limiting component (5). The fixing plate (3) is provided with a connecting part (6), and the safety rope is connected to the connecting part (6). The protective component (4) includes protective rods (401) spaced apart from the slide rails (2). Multiple connecting rods (402) are hinged between the protective rods (401) and the slide rails (2). One of the connecting rods (402) is provided with a locking component (403) on the protective rod (401), and the protective rod (401) is locked by the locking component (403). Or unlocking, multiple guardrails (404) are provided between the two guardrails (401), and the guardrails (401) are limited or unlocked by the limiting member (5). The slide rail (2) is provided with a hanging rod (7), and the hanging rod (7) is provided with a hanging ring (8). The connecting part (6) includes a connecting plate (601) provided on the fixed plate (3), and a connecting ring (602) is provided on the connecting plate (601). The safety rope is connected to the connecting ring (602). The locking member (403) includes a sleeve (40301) provided on the connecting rod (402). The protective rod (401) is provided with a wedge block (40302), and a locking hole (40303) is provided on the wedge block (40302). The protective rod (401) is provided with a fixed cylinder (40304) that abuts against and overlaps with the sleeve (40301). A sliding rod (40305) is slidably provided in the fixed cylinder (40304). One end of the sliding rod (40305) is provided with a locking block (403011) that is inserted into the locking hole (40303), and an elastic element is provided between the other end and the protective rod (401). The fixed plate (3) is provided with a receiving groove (9). The receiving groove (9) is provided with... A rotating shaft (10) is provided, and a connecting plate (601) is provided on the rotating shaft (10) and abuts against the ladder (1). A first torsion spring (11) is provided between the connecting plate (601) and the receiving groove (9) and is sleeved on the rotating shaft (10). Support blocks (12) are provided on opposite sides of the two guard rods (401). A support rod (13) that abuts against the support block (12) is hinged on one of the guard rods (401). A locking part (14) is provided on one of the guard rods (401) to lock or unlock the support rod (13).

2. The climbing assembly for maintenance and protection of assembled wind turbine towers according to claim 1, characterized in that, The fixed cylinder (40304) has a notch (40306), and the sliding rod (40305) is provided with a gripping rod (40307) that passes through the notch (40306) and engages with the fixed cylinder (40304).

3. The climbing assembly for maintenance and protection of assembled wind turbine towers according to claim 1, characterized in that, The elastic element includes a relief groove (40308) formed on the protective rod (401), a positioning block (40309) provided on the slide rod (40305) and inserted into the relief groove (40308), and a return spring (403010) sleeved on the positioning block (40309) is provided between the slide rod (40305) and the protective rod (401).

4. The climbing assembly for maintenance and protection of prefabricated wind turbine towers according to claim 1, characterized in that, The limiting member (5) includes a fixing band (501) and a connecting band (502) both disposed on the slide rail (2). The fixing band (501) has a through hole (503), and the connecting band (502) has a protrusion (504). The protrusion (504) has a hemispherical block (505) that is inserted into the through hole (503).

5. The climbing assembly for maintenance and protection of assembled wind turbine towers according to claim 1, characterized in that, The locking part (14) includes two crossbars (1401) provided on the guard rod (401). One of the crossbars (1401) is hinged to a stop bar (1402) that abuts against the support rod (13). A second torsion spring (1403) is provided at the hinge of the stop bar (1402). The other crossbar (1401) is provided with two stops (1404).

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