Built-in climbing device of wind power tower
By introducing anti-fall limit and self-locking lifting mechanisms into the climbing device built into the wind turbine tower, the problems of cumbersome operation and high safety hazards of traditional devices have been solved, and an efficient and safe climbing process has been achieved.
Patent Information
- Application Number
- CN202511460797.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-10-14
- Publication Date
- 2025-11-25
AI Technical Summary
Traditional wind turbine tower climbing devices are cumbersome to operate and pose safety hazards during the descent process, affecting work efficiency.
A climbing device including a fall prevention limiting mechanism and a self-locking lifting mechanism was designed. Through the cooperation of the locking block and the limiting block, it automatically locks and unlocks, ensuring that the safety rope does not require manual operation during the climbing process, and provides an additional support platform to prevent falls.
It improves climbing efficiency and safety, reduces the workload of staff, and ensures safety and comfort during the climbing process.
Smart Images
Figure CN121006930A_ABST
Abstract
Description
Technical Field
[0001] This invention relates to the field of tower climbing technology, and more particularly to a built-in climbing device for wind turbine towers. Background Technology
[0002] Offshore wind power is a renewable energy technology that uses wind power to generate electricity in the ocean or coastal areas. Compared with traditional onshore wind power, offshore wind power has advantages such as higher wind speeds, more stable wind directions, and no need to occupy land resources, resulting in a relatively smaller impact on the surrounding environment and ecology. However, the wind turbines used in offshore wind power are relatively large and tall, with relatively high towers. Therefore, when maintaining offshore wind turbines, climbing structures are usually installed inside the towers, allowing workers to climb to the top of the tower to maintain the generators and other equipment.
[0003] Traditional wind turbine towers have built-in ladders with simple safety climbing devices, typically using safety ropes to protect workers. When workers climb down, they need to first pull to release the safety device and then pull the control device to lower it. During this process, the device is in a state of repeated unlocking and unlocking, requiring constant control by the workers. This operation is quite tedious, and the continuous physical exertion and complicated steps result in a slow descent rate, seriously affecting overall work efficiency and posing a significant safety hazard to workers. Summary of the Invention
[0004] The purpose of this invention is to solve the problems mentioned in the background art, and to propose a wind turbine tower built-in climbing device.
[0005] To achieve the above objectives, the present invention adopts the following technical solution: a wind turbine tower built-in climbing device, including a ladder, a plurality of fixed frames are fixedly connected to the side wall of the ladder, a connecting column is fixedly connected to the end of the plurality of fixed frames away from the ladder, a first limiting groove is opened through the interior of the connecting column, and an anti-fall limiting mechanism is provided on the inner wall of the first limiting groove, and an installation groove is opened on the side wall of the fixed frame, and a self-locking lifting mechanism is provided on the inner wall of the installation groove; The anti-fall limiting mechanism includes a locking block disposed on the inner wall surface of the first limiting groove, which blocks and positions the locking block in the downward direction to prevent it from falling rapidly. The self-locking lifting mechanism includes a lifting plate disposed on the side wall of the fixed frame. After the lifting plate is rotated, it provides support for the locking block and automatically locks and limits the position after rotation.
[0006] Furthermore, the anti-fall limiting mechanism includes a sliding block, the outer wall of the locking block is slidably connected to the inner wall of the sliding block, and a first spring is fixedly connected to the side wall of the locking block. A connecting plate is fixedly connected to the side wall of the locking block, and a through hole is opened through the surface of the connecting plate. A positioning block is fixedly connected to the outer wall of the sliding block. A U-shaped frame is fixedly connected to the top of the sliding block, and a positioning rod is slidably connected through the inside of the U-shaped frame. A horizontal plate is fixedly connected to the top of the positioning rod, and a tension spring is fixedly connected to the bottom of the horizontal plate. An installation ring is fixedly connected to the end of the sliding block, and a pull ring is fixedly connected to the end of the connecting plate.
[0007] Furthermore, the inner wall of the first limiting groove is provided with a second limiting groove, and a fixing block is fixedly connected to the inner wall of the second limiting groove. A stop block is slidably connected to the inner wall of the fixing block, and a second spring is fixedly connected to one end of the stop block inside the fixing block. The end of the second spring away from the stop block is fixedly connected to the inner wall of the fixing block.
[0008] Furthermore, the inner wall of the first limiting groove is fixedly connected to several limiting blocks, the outer wall of the sliding block is slidably connected to the inner wall of the first limiting groove, the outer wall of the end of the locking block corresponds to the outer wall of the end of the several limiting blocks, the end of the first spring away from the locking block is fixedly connected to the inner wall of the sliding block, the outer wall of the connecting plate is slidably connected to the inner wall of the sliding block, the outer wall of the positioning block is slidably connected to the inner wall of the first limiting groove, the outer wall of the end of the positioning rod corresponds to the inner wall of the through hole after displacement, the outer wall of the end of the horizontal plate is slidably connected to the inner wall of the second limiting groove, and the end of the horizontal plate located inside the second limiting groove corresponds to the outer wall of the end of the abutment block.
[0009] Furthermore, a safety rope is fixedly connected to the inner wall of the mounting ring, and a safety hook is fixedly connected to the end of the safety rope away from the mounting ring.
[0010] Furthermore, a rotating rod is fixedly connected to the end of the lifting plate, and a torsion spring is fixedly connected to both ends of the rotating rod. A support rod is slidably connected through the inside of the lifting plate, and a side plate is fixedly connected to the side wall of the support rod. A third spring is fixedly connected to the side wall of the side plate, and a through groove is opened through the inside of the lifting plate.
[0011] Furthermore, one end of the lifting plate is rotatably connected to the inner wall of the mounting groove, the outer wall of the rotating rod is rotatably connected through the interior of the fixed frame, and the end of the torsion spring away from the rotating rod is fixedly connected to the outer wall of the fixed frame.
[0012] Furthermore, the end of the support rod corresponds to the outer wall of the limiting block, the outer wall of the side plate is slidably connected to the inner wall of the through groove, the end of the third spring away from the side plate is fixedly connected to the inner wall of the through groove, and the ends of the two support rods that are close to each other are engaged with each other.
[0013] Compared with existing technologies, the above solution has the following advantages: 1. The installation ring will cause the sliding block to move down along the inner wall of the first limiting groove. At the same time, the sliding block will cause the locking block to move down synchronously. Then the locking block will contact the surface of the limiting block below it. At this time, the contact surface between the locking block and the limiting block is not inclined, so the locking block will not slide towards the inner wall of the sliding block. Thus, the limiting block will block the downward movement of the locking block, allowing the sliding block to pull up the worker through the safety rope, avoiding the situation where the worker will fall. No additional safety operations are required during the climbing process, effectively reducing the risk of errors caused by the worker needing to be distracted to control the device, and improving the comfort and efficiency of the work.
[0014] 2. The horizontal plate will drive the positioning rod to slide upward along the inner wall of the through hole. When the end of the rod disengages from the inner wall of the through hole, the spring force of the first spring will drive the locking block to slide outward. Then the locking block will return to its initial position. At this time, the end of the locking block will contact and press against the surface of the limiting block. The sliding block will then be restricted from moving downward by the locking block. This allows for timely remedial operation in case of worker error. When the worker needs to move downward again, the pull ring needs to be pulled again to disengage the locking block from the limiting block before it can move downward, ensuring that the worker is always in a safe environment.
[0015] 3. By pulling the lifting plates on the inner walls of the mounting slots on both sides, the lifting plates will rotate outward around the pivot rod, allowing the two support rods to be spliced together. The ends of the two support rods that are far apart from each other will slide to the inner wall of the first limiting slot, while their lower surfaces press against the upper surfaces of the corresponding limiting blocks. At the same time, the ends of the lifting plates will slide into the interior of the first limiting slot and align with the lower surface of the sliding block, thus blocking the path of the sliding block and further ensuring that the worker will not fall. The limiting blocks provide support for the support rods. At this time, the worker can sit on the upper surfaces of the two lifting plates, providing a resting platform. The worker's center of gravity will shift to the lifting plates, freeing their hands for better maintenance work and improving the portability of the work. Attached Figure Description
[0016] Figure 1 This is a schematic diagram of the overall structure proposed in this invention; Figure 2 This is a schematic diagram of the internal structure of the connecting column proposed in this invention; Figure 3 This is a schematic diagram of the structural connection between the card block and the horizontal plate proposed in this invention; Figure 4 This is a schematic diagram of the internal structure of the fixing block proposed in this invention; Figure 5 This is a schematic diagram of the transmission structure of the rotating rod and support rod proposed in this invention; Figure 6 This is a schematic diagram of the internal structure of the support plate proposed in this invention.
[0017] The markings in the attached diagram are as follows: 1. Ladder; 2. Fixing frame; 3. Connecting column; 4. First limiting groove; 5. Anti-fall limiting mechanism; 6. Limiting block; 7. Second limiting groove; 8. Mounting groove; 9. Self-locking lifting mechanism; 10. Safety rope; 11. Safety hook; 501. Sliding block; 502. Locking block; 503. First spring; 504. Connecting plate; 505. Through hole; 506. Positioning block; 507. U-shaped frame; 508. Positioning rod; 509. Horizontal plate; 510. Tension spring; 511. Mounting ring; 512. Pull ring; 513. Fixing block; 514. Abutment block; 515. Second spring; 901. Lifting plate; 902. Rotating rod; 903. Torsion spring; 904. Support rod; 905. Side plate; 906. Third spring; 907. Through groove. Detailed Implementation
[0018] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.
[0019] In the description of this invention, it should be understood that the terms "upper," "lower," "top surface," "bottom surface," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing the invention and simplifying the description, and do not indicate or imply that the indicated position or element must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the invention. Furthermore, the terms "first" and "second" are only used to distinguish an entity or operation from another entity or operation, and do not require or imply any actual relationship, order, or relative importance between these entities or operations.
[0020] Example 1, please refer to Figures 1-4 A wind turbine tower built-in climbing device includes a ladder 1, a plurality of fixed frames 2 are fixedly connected to the side wall of the ladder 1, a connecting column 3 is fixedly connected to the end of the plurality of fixed frames 2 away from the ladder 1, a first limiting groove 4 is opened through the inside of the connecting column 3, and an anti-fall limiting mechanism 5 is provided on the inner wall of the first limiting groove 4, and an installation groove 8 is opened on the side wall of the fixed frame 2, and a self-locking lifting mechanism 9 is provided on the inner wall of the installation groove 8. Furthermore, the anti-fall limiting mechanism 5 includes a locking block 502 disposed on the inner wall surface of the first limiting groove 4, which blocks and positions the locking block 502 in the downward direction to prevent it from falling rapidly. The anti-fall limiting mechanism 5 includes a sliding block 501, the outer wall of the locking block 502 is slidably connected to the inner wall of the sliding block 501, and a first spring 503 is fixedly connected to the side wall of the locking block 502. A connecting plate 504 is fixedly connected to the side wall of the locking block 502, and a through hole 505 is provided through the surface of the connecting plate 504. A positioning block 506 is fixedly connected to the outer wall of the sliding block 501, and a U-shaped frame 507 is fixedly connected to the top of the sliding block 501. A positioning rod 508 is slidably connected through the interior of the U-shaped frame 507. A horizontal plate 509 is fixedly connected to the top of the 8, and a tension spring 510 is fixedly connected to the bottom of the horizontal plate 509. An installation ring 511 is fixedly connected to the end of the sliding block 501. A pull ring 512 is fixedly connected to the end of the connecting plate 504. A safety rope 10 is fixedly connected to the inner wall of the installation ring 511, and a safety hook 11 is fixedly connected to the end of the safety rope 10 away from the installation ring 511. A plurality of limiting blocks 6 are fixedly connected to the inner wall of the first limiting groove 4. A second limiting groove 7 is opened on the inner wall of the first limiting groove 4, and a fixing block 513 is fixedly connected to the inner wall of the second limiting groove 7. A stop block 514 is slidably connected to the inner wall of the fixing block 513, and a second spring 515 is fixedly connected to the end of the stop block 514 located inside the fixing block 513. More specifically, when workers need to use the device to climb up the inside of the wind turbine tower via ladder 1, they first need to attach the safety hook 11 to their protective gear. During the climb, the protective gear will move the safety rope 10 accordingly. No pulling is required during the climb. Then, the other end of the safety rope 10 will pull the sliding block 501 upwards along the inner wall of the first limiting groove 4 via the mounting ring 511. The sliding block 501 will then move the positioning block 506 synchronously. The positioning block 506 slides against the inner wall of the first limiting groove 4, ensuring that the horizontal direction of the sliding block 501 does not deviate. Simultaneously, the sliding block 501 will also move its inner... The locking block 502 moves synchronously. Since the outer wall of the end of the locking block 502 corresponds to the outer wall of the end of several limiting blocks 6, after the locking block 502 moves a certain distance, its end will contact the corresponding limiting block 6. Then the inclined surface of the end of the locking block 502 will be squeezed and then slide towards the inner wall of the sliding block 501. At the same time, the first spring 503 will be compressed to generate squeezing force. Then, when the locking block 502 slides a certain distance, the end of the locking block 502 will pass the end of the limiting block 6. Then the locking block 502 will no longer be squeezed. Then, the squeezing force of the first spring 503 will expand and shrink, causing the locking block 502 to slide along the inner wall of the sliding block 501, so that the locking block 502 returns to the initial position. If a worker accidentally slips and falls during the climb, their protective gear will pull the mounting ring 511 via the safety hook 11 and safety rope 10. The mounting ring 511 will then cause the sliding block 501 to move downwards along the inner wall of the first limiting groove 4. Simultaneously, the sliding block 501 will cause the locking block 502 to move downwards. The locking block 502 will then contact the surface of the limiting block 6 below it. At this point, the contact surface between the locking block 502 and the limiting block 6 is not inclined, so the locking block 502 will not slide towards the inner wall of the sliding block 501. The limiting block 6 will then block the downward movement of the locking block 502, allowing the sliding block 501 to pull the worker up via the safety rope 10, preventing the worker from slipping and falling. No additional safety procedures are required during the climb, effectively reducing the risk of worker errors due to distraction while controlling the device, and improving work comfort and efficiency.
[0021] Example 2, please refer to Figures 1-6 Based on Embodiment 1, in this embodiment, the outer wall of the sliding block 501 is slidably connected to the inner wall of the first limiting groove 4, the outer wall of the end of the locking block 502 corresponds to the outer wall of the end of several limiting blocks 6, the end of the first spring 503 away from the locking block 502 is fixedly connected to the inner wall of the sliding block 501, the outer wall of the connecting plate 504 is slidably connected to the inner wall of the sliding block 501, and the outer wall of the positioning block 506 is slidably connected to the inner wall of the first limiting groove 4. Furthermore, the outer wall of the end of the positioning rod 508 corresponds to the inner wall of the through hole 505 after displacement, the outer wall of the end of the horizontal plate 509 is slidably connected to the inner wall of the second limiting groove 7, one end of the horizontal plate 509 located inside the second limiting groove 7 corresponds to the outer wall of the end of the abutment block 514, and the end of the second spring 515 away from the abutment block 514 is fixedly connected to the inner wall of the fixing block 513. More specifically, when the staff descends after climbing, the process involves manually pulling the ring 512 to move the connecting plate 504. Then, the connecting plate 504 causes the locking block 502 to slide to the inner wall of the sliding block 501. After the displacement, the connecting plate 504 causes the through hole 505 to move to a position below the positioning rod 508. Then, the tension of the tension spring 510 pulls the horizontal plate 509. The horizontal plate 509 then causes the positioning rod 508 to slide to the inner wall of the through hole 505 to complete the locking. After that, the staff can descend along the ladder 1. During this process, the locking block 502 will not contact the limiting blocks 6, and the staff can descend smoothly. If the foot slips and falls during the downward movement, it will cause the sliding block 501 to move rapidly downward along the inner wall of the first limiting groove 4. Then, the U-shaped frame 507 will drive the horizontal plate 509 to move synchronously. After moving rapidly downward to a certain distance, the two ends of the horizontal plate 509 will contact the outer inclined surface of the corresponding abutment block 514. Due to the large impact force of the rapid downward movement of the horizontal plate 509, the horizontal plate 509 will be subjected to a large reaction force. Then, the horizontal plate 509 will drive the positioning rod 508 to slide upward along the inner wall of the through hole 505. When the end of the rod disengages from the through hole 505... After the inner wall is closed, the elastic force of the first spring 503 will cause the locking block 502 to slide outward. Then the locking block 502 will return to its initial position. At this time, the end of the locking block 502 will contact and press against the surface of the limiting block 6. Then the sliding block 501 will be restricted from moving downward by the locking block 502, so that timely remedial operation can be performed when the staff makes a mistake. Afterwards, when the staff needs to move downward again, they need to pull the pull ring 512 again to make the locking block 502 disengage from the limiting block 6 before it can move downward, ensuring that the staff is always in a safe environment.
[0022] Example 3, please refer to Figures 1-6 Based on Embodiment 2, in this embodiment, the self-locking lifting mechanism 9 includes a lifting plate 901 disposed on the side wall of the fixed frame 2. After the lifting plate 901 is rotated, it provides support for the locking block 502. After rotation, it automatically locks and limits the position. A rotating rod 902 is fixedly connected to the end of the lifting plate 901, and a torsion spring 903 is fixedly connected to both ends of the rotating rod 902. A support rod 904 is slidably connected through the inside of the lifting plate 901, and a side plate 905 is fixedly connected to the side wall of the support rod 904. A third spring 906 is fixedly connected to the side wall of the side plate 905. A through groove 907 is opened through the inside of the lifting plate 901. Furthermore, one end of the lifting plate 901 is rotatably connected to the inner wall of the mounting groove 8, the outer wall of the rotating rod 902 is rotatably connected through the inside of the fixed frame 2, the end of the torsion spring 903 away from the rotating rod 902 is fixedly connected to the outer wall of the fixed frame 2, the end of the support rod 904 corresponds to the outer wall of the limiting block 6, the outer wall of the side plate 905 is slidably connected to the inner wall of the through groove 907, the end of the third spring 906 away from the side plate 905 is fixedly connected to the inner wall of the through groove 907, and the two support rods 904 are interlocked at their close ends. More specifically, when workers are climbing the inside of the wind turbine tower, if they need to stop for maintenance or rest after reaching a designated position, they can pull the lifting plates 901 on the inner walls of the mounting slots 8 on both sides. The lifting plates 901 will then rotate outward around the pivot rod 902, and the torsion spring 903 will be compressed by torque. Then, when the ends of the lifting plates 901 on both sides approach each other, the ends of the support rods 904 inside them will be squeezed and locked together. They will then squeeze each other and slide along the inside of the corresponding lifting plates 901. Then, the support rods 904 will drive the side plates 905 to slide along the inner wall of the through slot 907, and the third spring 906 will be compressed. After the two lifting plates 901 have finished flipping, the two support rods 904 will be spliced together, and their opposite ends will slide to the inner wall of the first limiting groove 4. At the same time, their lower surfaces will press against the upper surfaces of the corresponding limiting blocks 6. Simultaneously, the ends of the lifting plates 901 will slide into the interior of the first limiting groove 4 and correspond to the lower surface of the sliding block 501, thereby blocking the path of the sliding block 501 and further ensuring that the worker will not fall. The limiting blocks 6 provide support for the support rods 904. At this time, the worker can sit on the upper surfaces of the two lifting plates 901, providing a resting platform. The worker's center of gravity will shift to the lifting plates 901, freeing their hands for better maintenance work and improving the portability of the work.
[0023] The working principle of this invention is as follows: When a worker needs to use the device to climb up the inside of the wind turbine tower via the ladder 1, the safety hook 11 must first be attached to the worker's protective gear. Then, during the climb, the protective gear will move the safety rope 10 accordingly. No pulling action is required during the climb. Next, the other end of the safety rope 10 will pull the sliding block 501 upwards along the inner wall of the first limiting groove 4 via the mounting ring 511. Then, the sliding block 501 will move the positioning block 506 synchronously, causing the positioning block 506 to abut against the first limiting groove 4. The sliding of the inner wall of the groove 4 ensures that the horizontal direction of the sliding block 501 will not deviate. At the same time, the sliding block 501 will also drive the internal locking block 502 to move synchronously. After the locking block 502 moves a certain distance, its end will contact the corresponding limiting block 6. Then the inclined surface of the end of the locking block 502 will be squeezed and then slide towards the inner wall of the sliding block 501. At the same time, the first spring 503 will be compressed to generate squeezing force. Then, when the locking block 502 slides a certain distance, the end of the locking block 502 will pass the end of the limiting block 6, so that the locking block 502 is reset. If a worker accidentally slips and falls during the climb, their protective gear will pull the mounting ring 511 via the safety hook 11 and safety rope 10. The mounting ring 511 will then move the sliding block 501 down along the inner wall of the first limiting groove 4. At the same time, the sliding block 501 will move the locking block 502 down synchronously. The locking block 502 will then contact the surface of the limiting block 6 below it. At this time, the contact surface between the locking block 502 and the limiting block 6 is not inclined, thus the limiting block 6 will block the downward movement of the locking block 502. This allows the sliding block 501 to pull the worker up via the safety rope 10, preventing the worker from slipping and falling. No additional safety operations are required during the climb, effectively reducing the risk of the worker needing to be distracted to control the device and thus improving the comfort and efficiency of the work. After the staff climbs up the inside of the wind turbine tower to the designated position, if they need to stop for maintenance or a short rest, they can pull the lifting plate 901 located on the inner wall of the mounting slot 8 on both sides. At this time, the lifting plate 901 will flip outward around the rotating rod 902 as the axis. The ends of the support rods 904 inside the lifting plate 901 that are close to each other will squeeze and lock together. After locking, the support rods 904 will slide along their respective lifting plates 901 under the action of mutual squeezing. This sliding process drives the side plate 905 to slide synchronously along the inner wall of the through slot 907, thereby compressing the third spring 906. When the two lifting plates 901 are fully rotated into place, the two support rods 904 are spliced together. Their opposite ends slide to the inner wall of the first limiting groove 4, and the lower surface of the support rod 904 is tightly pressed against the upper surface of the corresponding limiting block 6. The end of the lifting plate 901 slides into the first limiting groove 4, corresponding to the lower surface of the sliding block 501, thus blocking the movement path of the sliding block 501 and further eliminating the risk of workers falling. During this process, the limiting block 6 plays a key supporting role for the support rod 904. At this time, the workers can sit steadily on the upper surface of the two lifting plates 901. The two lifting plates 901 provide a safe resting platform for the workers. The center of gravity of the workers is transferred to the lifting plates 901, freeing their hands and allowing them to focus more on and conveniently carry out maintenance work, greatly improving the convenience and efficiency of the work.
[0024] It should be noted that all the devices in this application are common devices on the market, and can be selected according to the needs of specific use. The circuit connection relationship of each device is a simple series and parallel connection circuit. There is no innovation in the circuit connection part. Those skilled in the art can easily implement it. It belongs to the prior art and will not be described in detail.
[0025] While the present invention has been disclosed above, it is not limited thereto. Any person skilled in the art can make various modifications and alterations without departing from the spirit and scope of the invention; therefore, the scope of protection of the present invention should be determined by the scope defined in the claims.
Claims
1. A climbing device built into a wind turbine tower, comprising a ladder (1), characterized in that: The side wall of the ladder (1) is fixedly connected to several fixed frames (2), and the end of the several fixed frames (2) away from the ladder (1) is fixedly connected to a connecting column (3). The interior of the connecting column (3) is provided with a first limiting groove (4), and the inner wall of the first limiting groove (4) is provided with an anti-fall limiting mechanism (5). The side wall of the fixed frame (2) is provided with an installation groove (8), and the inner wall of the installation groove (8) is provided with a self-locking lifting mechanism (9). The anti-fall limiting mechanism (5) includes a locking block (502) disposed on the inner wall surface of the first limiting groove (4) to block and lock the downward movement of the locking block (502); The self-locking lifting mechanism (9) includes a lifting plate (901) set on the side wall of the fixed frame (2). After the lifting plate (901) is rotated, it provides support for the locking block (502) and automatically locks and positions itself after rotation.
2. The wind turbine tower built-in climbing device according to claim 1, characterized in that, The anti-fall limiting mechanism (5) includes a sliding block (501), the outer wall of the locking block (502) is slidably connected to the inner wall of the sliding block (501), and a first spring (503) is fixedly connected to the side wall of the locking block (502). A connecting plate (504) is fixedly connected to the side wall of the locking block (502), and a through hole (505) is opened through the surface of the connecting plate (504). A positioning block (506) is fixedly connected to the outer wall of the sliding block (501). A U-shaped frame (507) is fixedly connected to the top of the sliding block (501), and a positioning rod (508) is slidably connected through the inside of the U-shaped frame (507). A horizontal plate (509) is fixedly connected to the top of the positioning rod (508), and a tension spring (510) is fixedly connected to the bottom of the horizontal plate (509). An installation ring (511) is fixedly connected to the end of the sliding block (501), and a pull ring (512) is fixedly connected to the end of the connecting plate (504).
3. The wind turbine tower built-in climbing device according to claim 2, characterized in that, The inner wall of the first limiting groove (4) is provided with a second limiting groove (7), and a fixing block (513) is fixedly connected to the inner wall of the second limiting groove (7). A stop block (514) is slidably connected to the inner wall of the fixing block (513), and a second spring (515) is fixedly connected to one end of the stop block (514) inside the fixing block (513). The end of the second spring (515) away from the stop block (514) is fixedly connected to the inner wall of the fixing block (513).
4. The wind turbine tower built-in climbing device according to claim 3, characterized in that, The inner wall of the first limiting groove (4) is fixedly connected with several limiting blocks (6). The outer wall of the sliding block (501) is slidably connected to the inner wall of the first limiting groove (4). The outer wall of the end of the locking block (502) corresponds to the outer wall of the end of several limiting blocks (6). The end of the first spring (503) away from the locking block (502) is fixedly connected to the inner wall of the sliding block (501). The outer wall of the connecting plate (504) is slidably connected to the inner wall of the sliding block (501). The outer wall of the positioning block (506) is slidably connected to the inner wall of the first limiting groove (4). The outer wall of the end of the positioning rod (508) corresponds to the inner wall of the displaced through hole (505). The outer wall of the end of the horizontal plate (509) is slidably connected to the inner wall of the second limiting groove (7). The end of the horizontal plate (509) located inside the second limiting groove (7) corresponds to the outer wall of the end of the abutment block (514).
5. A wind turbine tower built-in climbing device according to claim 4, characterized in that, A safety rope (10) is fixedly connected to the inner wall of the mounting ring (511), and a safety hook (11) is fixedly connected to the end of the safety rope (10) away from the mounting ring (511).
6. The wind turbine tower built-in climbing device according to claim 5, characterized in that, The lifting plate (901) is fixedly connected to a rotating rod (902) at one end, and both ends of the rotating rod (902) are fixedly connected to torsion springs (903). A support rod (904) is slidably connected through the interior of the lifting plate (901), and a side plate (905) is fixedly connected to the side wall of the support rod (904). A third spring (906) is fixedly connected to the side wall of the side plate (905). A through groove (907) is opened through the interior of the lifting plate (901).
7. A wind turbine tower built-in climbing device according to claim 6, characterized in that, One end of the lifting plate (901) is rotatably connected to the inner wall of the mounting groove (8), the outer wall of the rotating rod (902) is rotatably connected through the inside of the fixed frame (2), and the end of the torsion spring (903) away from the rotating rod (902) is fixedly connected to the outer wall of the fixed frame (2).
8. A wind turbine tower built-in climbing device according to claim 7, characterized in that, The end of the support rod (904) corresponds to the outer wall of the limiting block (6), the outer wall of the side plate (905) is slidably connected to the inner wall of the through groove (907), the end of the third spring (906) away from the side plate (905) is fixedly connected to the inner wall of the through groove (907), and the ends of the two support rods (904) that are close to each other are engaged with each other.