Tower drum ladder extension device and wind turbine

Abstract

This application discloses a tower ladder extension device and a wind turbine generator. The tower ladder extension device includes a support and an installation mechanism. The support includes a connecting section and an extension section extending outward from the connecting section, and the extension section is equipped with a step. The installation mechanism is located on the connecting section and is used to detachably mount the support onto the ladder. When the support is mounted on the ladder, the installation mechanism is connected to the ladder, the extension section extends outward from the ladder, and the step is located on the outside of the ladder. The technical solution provided by this application, through the installation mechanism of the connecting section attached to the ladder and the extension section extending outward, allows the step to extend to the outside of the ladder's width boundary, enabling workers to reach areas that traditional ladders cannot cover. This solves the problem of cable clamp nails being difficult to maintain due to their distance from the ladder, and is also suitable for the limited maintenance space around large-diameter tower ladders, eliminating blind spots in operation and maintenance due to insufficient operating range.

Description

Technical Field

[0001] This application relates to the field of wind turbine technology, and in particular to a tower ladder extension device and a wind turbine. Background Technology

[0002] Wind turbine towers typically have ladders inside for personnel access. These ladders consist of side beams and spaced-out steps, serving as the main path for maintenance personnel to access various parts of the tower. Cables inside the tower must be secured to the inner wall using cable clamps and nails to ensure safe operation.

[0003] In existing technologies, cable clamp nails often fall off during tower maintenance operations. Some nails are installed far from the ladder, exceeding the operating range of workers standing on the ladder, making it impossible to maintain the fallen nails in a timely manner. Secondly, with the increasing prevalence of large-diameter towers, the working range of personnel on the ladder is limited. Even for components such as cable clamps near the ladder, their installation and maintenance are difficult to complete directly by relying on the ladder, resulting in low efficiency and high difficulty in the maintenance of cable clamps inside the tower. Utility Model Content

[0004] The purpose of this application is to provide a tower ladder extension device and a wind turbine that allows workers to reach areas that traditional ladders cannot cover.

[0005] In a first aspect, this utility model provides a tower ladder extension device, comprising: The bracket includes a connecting section and an extension section extending outward from the connecting section, and the extension section is provided with a foot pedal; An installation mechanism is provided on the connecting section, and the installation mechanism is used to detachably mount the bracket on the ladder; When the bracket is mounted on the ladder, the mounting mechanism is connected to the ladder, the extension extends to the outside of the ladder, and the treads are located on the outside of the ladder.

[0006] Beneficial effects: This tower ladder extension device allows workers to carry the device while maintaining components (such as cable clamps) inside the tower, climb the ladder to the target location, retrieve the device, and then fix it to the corresponding position on the ladder using the installation mechanism, ensuring a stable connection between the support and the ladder. At this time, the extension section of the support extends outwards from the ladder, causing the step to extend beyond the ladder's width boundary. Workers can then stand on the step to reach the component to be maintained, which is far from the ladder. After maintenance is completed, workers can return to the ladder and disassemble the installation mechanism to complete the operation. The entire operation requires no complicated tools, meeting the convenience requirements of high-altitude maintenance.

[0007] By attaching the connecting section to the ladder and extending it outwards, the treads extend beyond the ladder's width boundary, allowing workers to reach areas inaccessible by traditional ladders. This solves the problem of cable clamp nails being difficult to maintain due to their distance from the ladder, and also adapts to the limited maintenance space around large-diameter tower ladders, eliminating blind spots in maintenance due to insufficient operating range.

[0008] Furthermore, the tower ladder extension device is detachably installed along the ladder, allowing workers to carry it to any ladder location requiring maintenance, installing it as needed and disassembling it after use, without being limited to fixed maintenance points. It can flexibly adapt to various needs, from temporarily fixing loose nails to maintaining cable clamps on towers of different heights and diameters. Compared to related technologies that require adding permanent maintenance treads or extra ladders to each tower section, this detachable installation mechanism, attached to the existing ladder, eliminates the need for permanent tower modifications and separate fixing devices for each maintenance point. This not only saves on the material and construction costs of permanent devices but also avoids resource waste caused by long-term idleness of fixed devices, significantly reducing the overall operation and maintenance costs of the tower throughout its lifecycle.

[0009] In one optional embodiment, the mounting mechanism includes at least one mounting portion having a supporting section, one end of which is connected to the connecting section, and the other end of which protrudes outward toward the connecting section. When the support is installed on the ladder, the supporting section overlaps the ladder's treads and is located on one side of the ladder beam.

[0010] Beneficial effects: When the support frame is installed on the ladder, the supporting section directly overlaps the rungs, transferring the load of the worker standing on the rungs directly to the rungs. The rungs, as the core load-bearing component of the ladder, have sufficient load-bearing capacity, preventing uneven stress caused by load dispersion. Simultaneously, the support section's location on one side of the ladder beam creates lateral restraint, reducing swaying of the device along the width of the ladder and improving stability during high-altitude operations.

[0011] In one optional embodiment, the mounting portion further includes a limiting section, which is connected to the other end of the supporting section to form an L-shaped structure; When the bracket is installed on the ladder, the limiting section and the supporting section are arranged around the outside of the ladder beam.

[0012] Beneficial effects: The L-shaped structure can wrap the ladder beam inside, with the supporting section fitting against one side of the ladder beam and the limiting section fitting against the other side, forming a circumferential constraint. This can limit the sliding of the device along the width of the ladder, while preventing the device from detaching from the ladder beam due to the lateral force generated by workers stepping on the pedals. It solves the problem of easy displacement under unilateral force that may occur with simple overlapping supporting sections, ensuring structural stability during high-altitude operations.

[0013] In one optional embodiment, two mounting portions are provided at intervals along the height direction of the bracket on the connecting segment; When the bracket is installed on the ladder, the two mounting parts are respectively connected to the two adjacent steps of the ladder.

[0014] Beneficial effects: The load on the footplate is distributed through two mounting sections to the two adjacent footplates, rather than being concentrated on a single footplate. This distributed load-bearing prevents deformation of a single footplate due to localized overload, reduces single-point stress on the mounting section, and extends the service life of the device and ladder.

[0015] In one optional embodiment, the mounting mechanism further includes a limiting part, which is disposed on the connecting segment and protrudes outward toward the outside of the connecting segment; When the bracket is installed on the ladder, the limiting part and the supporting section are located on opposite sides of the ladder beam.

[0016] Beneficial effects: During installation, workers do not need to precisely align the ladder beam to specific positions. Simply clamp the limiting part and the supporting section onto both sides of the ladder beam, and the lateral positioning will be automatically completed through the clamping relationship between the two, eliminating the need to repeatedly adjust the left and right positions of the device.

[0017] In one alternative embodiment, the mounting mechanism further includes a locking component, which is disposed on both sides of the connecting section, and the locking component is used to lock the bracket onto the rungs of the ladder.

[0018] Beneficial effects: The supporting section of the installation unit overlaps the foot bar from one side of the connecting section, and the locking component locks the foot bar from the other side. Both are connected with the foot bar on both sides of the connecting section, which not only prevents the installation unit from slipping upward due to excessive load, but also prevents the locking component from loosening downward due to unilateral force. It can counteract the longitudinal force generated when the worker steps on the pedal, and solve the hidden danger of easy displacement and loosening of simple overlap. It is especially suitable for the vibration environment of tower high-altitude operation.

[0019] In one optional embodiment, the locking assembly includes a locking part and a locking pin. The locking part is provided with a receiving groove for accommodating ladder steps, and the locking part is provided with a socket for the locking pin to be inserted. The locking assembly has a locked state and an unlocked state. In the locked state, the locking pin is inserted into the socket, locking the ladder runner in the receiving groove. In the unlocked state, the locking pin is disengaged from the socket, allowing the ladder runner to be removed from the receiving groove.

[0020] Beneficial effects: The receiving groove of the locking part can completely cover the ladder rungs, forming an initial positioning; after the locking pin is inserted into the socket, it can form a rigid constraint from the direction perpendicular to the rung, directly preventing the rungs from coming out along the opening direction of the receiving groove. It can resist the external forces generated by tower vibration and personnel stepping on it, and prevent the locking components from being accidentally unlocked.

[0021] In one alternative embodiment, when the bracket is mounted on a ladder, the locking part is at least partially located at the bottom of the ladder treads.

[0022] Beneficial effects: In routine operations, the device is primarily subjected to downward forces. However, in complex high-altitude environments, there may be upward risks. For example, when a worker stands on the platform and applies a downward force, the supporting section exerts a downward force on the foot rod. If the supporting section remains stationary, the locking part may tilt upwards. The locking part located at the bottom of the foot rod specifically prevents the device from moving upwards and detaching from the foot rod.

[0023] In one alternative implementation, the connecting segment and the extension segment are arranged at an angle.

[0024] Beneficial effect: The angled setting allows for adjustment of the extension direction of the extension section based on the positional relationship between the ladder inside the tower and the components to be maintained (such as cable clamps).

[0025] Secondly, this utility model also provides a wind turbine generator, comprising: The tower has an internal ladder. A tower ladder extension device, wherein the bracket is detachably mounted on the ladder via the mounting mechanism.

[0026] Beneficial effects: This wind turbine, because it includes a tower ladder extension device, has the same effect as the tower ladder extension device, which will not be elaborated here. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 This is a schematic diagram of the structure of the tower ladder extension device installed on the ladder in one embodiment of the present application; Figure 2 This is a schematic diagram of the structure of a tower ladder extension device in one embodiment provided in this application; Figure 3This is a structural schematic diagram of the tower ladder extension device from another perspective in one embodiment provided in this application; Figure 4 This is a schematic diagram of the installation part in one embodiment of the tower ladder extension device provided in this application; Figure 5 This is a schematic diagram of the locking component in a tower ladder extension device according to one embodiment provided in this application.

[0029] Explanation of reference numerals in the attached figures: 100. Bracket; 110. Connecting section; 120. Extension section; 121. Pedal; 200. Installation mechanism; 210. Installation part; 211. Support section; 212. Limiting section; 220. Limiting part; 230. Locking assembly; 231. Locking part; 2311. Receiving groove; 2312. Insertion hole; 232. Locking pin; 233. Chain; 1000, ladder; 1100, step bar; 1200, ladder beam; 2000, Cable clamps. Detailed Implementation

[0030] In related technologies, cable clamp nails often fall off during tower maintenance operations. Some nails are installed far from the ladder, exceeding the operating range of workers standing on the ladder, making it impossible to maintain the fallen nails in a timely manner. Secondly, with the widespread use of large-diameter towers, the working range of personnel on the ladder is limited. Even for components such as cable clamps near the ladder, their installation and maintenance cannot be directly completed by relying on the ladder, resulting in low efficiency and high difficulty in the maintenance of cable clamps inside the tower.

[0031] In the early stages of the research and development of this application, in order to expand the working range of the ladder inside the tower, two solutions were first tried: one was to add a fixed maintenance step on the side of the ladder, and the other was to lay an additional independent maintenance ladder inside the tower. Although these two solutions allowed workers to reach the cable clamps at a distance through the added platform or passage, thus initially solving the problem of insufficient maintenance range, they had obvious drawbacks.

[0032] Because the cable clamp maintenance points inside the tower are scattered and in various locations, each maintenance point in each section of the tower needs to be equipped with a fixed step or ladder. This not only requires a high investment in materials and construction costs, but also leads to long-term idleness of the fixed devices and waste of resources. Furthermore, it cannot flexibly adapt to temporary maintenance needs and fails to meet the requirements of economy and flexibility. Therefore, the research and development team abandoned this approach.

[0033] Based on this, the inventors of this application have redesigned the tower ladder extension device. During maintenance of components to be maintained inside the tower (such as cable clamps), workers can carry the device and climb the ladder to the target location. After retrieving the device, it is fixed to the corresponding position on the ladder by the installation mechanism, so that the bracket is stably connected to the ladder. At this time, the extension section of the bracket extends outward from the ladder, causing the step to exceed the width boundary of the ladder. Workers can reach the component to be maintained away from the ladder by standing on the step. After maintenance is completed, workers return to the ladder and remove the installation mechanism from the ladder to complete the operation. The whole operation does not require complicated tools and meets the convenience requirements of high-altitude operation and maintenance.

[0034] By attaching the connecting section to the ladder and extending it outwards, the treads extend beyond the ladder's width boundary, allowing workers to reach areas inaccessible by traditional ladders. This solves the problem of cable clamp nails being difficult to maintain due to their distance from the ladder, and also adapts to the limited maintenance space around large-diameter tower ladders, eliminating blind spots in maintenance due to insufficient operating range.

[0035] Furthermore, the tower ladder extension device is detachably installed along the ladder, allowing workers to carry it to any ladder location requiring maintenance, installing it as needed and disassembling it after use, without being limited to fixed maintenance points. It can flexibly adapt to various needs, from temporarily fixing loose nails to maintaining cable clamps on towers of different heights and diameters. Compared to related technologies that require adding permanent maintenance treads or extra ladders to each tower section, this detachable installation mechanism, attached to the existing ladder, eliminates the need for permanent tower modifications and separate fixing devices for each maintenance point. This not only saves on the material and construction costs of permanent devices but also avoids resource waste caused by long-term idleness of fixed devices, significantly reducing the overall operation and maintenance costs of the tower throughout its lifecycle.

[0036] 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. Obviously, the described embodiments are some embodiments of this application, but not all embodiments.

[0037] The following is combined with Figures 1 to 5 The following describes embodiments of the present invention.

[0038] According to embodiments of the present invention, on the one hand, such as Figures 1 to 5 As shown, a tower ladder extension device is provided, including a bracket 100 and an installation mechanism 200.

[0039] Specifically, such as Figures 1 to 3 As shown, the bracket 100 includes a connecting section 110 and an extension section 120, wherein the connecting section 110 is connected to the extension section 120, and the extension section 120 extends outward from the connecting section 110.

[0040] Specifically, such as Figure 2 As shown, a footboard 121 is installed on the extension section 120, allowing workers to stand on the footboard 121 to maintain the internal devices of the tower.

[0041] Specifically, such as Figures 1 to 3 As shown, the mounting mechanism 200 is disposed on the connecting section 110 of the bracket 100, and the bracket 100 is detachably mounted on the ladder 1000 via the mounting mechanism 200.

[0042] Specifically, such as Figures 1 to 3 As shown, when the bracket 100 is installed on the ladder 1000, the mounting mechanism 200 is connected to the ladder 1000, and the extension 120 of the bracket 100 extends to the outside of the ladder 1000, such that the tread 121 on the extension 120 is located outside the width boundary of the ladder 1000.

[0043] This tower ladder extension device allows workers to carry the device while maintaining components (such as cable clamps 2000) inside the tower. They can climb the ladder 1000 to the target location, retrieve the device, and then fix it to the corresponding position on the ladder 1000 via the installation mechanism 200, ensuring a stable connection between the support 100 and the ladder 1000. At this time, the extension section 120 of the support 100 extends outward from the ladder 1000, causing the step 121 to extend beyond the width boundary of the ladder 1000. Workers can then stand on the step 121 to reach the components that are far from the ladder 1000. After maintenance, workers can return to the ladder 1000 and remove the installation mechanism 200 from the ladder 1000 to complete the operation. The entire operation requires no complicated tools and meets the convenience requirements of high-altitude maintenance.

[0044] The installation mechanism 200 of the connecting section 110 is attached to the ladder 1000, and the extension section 120 extends outward, allowing the treadle 121 to extend to the outside of the width boundary of the ladder 1000, enabling workers to reach areas that cannot be covered by a traditional ladder 1000. This solves the problem of difficult maintenance of the cable clamp 2000 nails due to their distance from the ladder 1000, and also adapts to the limited maintenance space around the large-diameter tower ladder 1000, eliminating blind spots in operation and maintenance due to insufficient operating range.

[0045] Furthermore, the tower ladder extension device is detachably installed on the ladder 1000, allowing workers to carry it to any location on the ladder 1000 requiring maintenance, installing it as needed and disassembling it after use, without being limited to fixed maintenance points. It can flexibly adapt to both temporary handling of loose nails and maintenance of cable clamps 2000 on towers of different heights and diameters. Compared to related technologies that require adding permanent maintenance steps 121 or additional ladders 1000 to each tower section, the detachable installation mechanism 200, attached to the existing ladder 1000, eliminates the need for permanent tower modifications and separate fixing devices for each maintenance point. This not only saves on the material and construction costs of permanent devices but also avoids resource waste caused by long-term idleness of fixed devices, significantly reducing the overall operation and maintenance costs of the tower throughout its lifecycle.

[0046] Specifically, the connecting section 110 and the extension section 120 of the bracket 100 can be integrally formed, or they can be detachably connected or fixedly connected, etc. In this embodiment, no specific restrictions are placed on the connection method of the connecting section 110 and the extension section 120.

[0047] Specifically, the pedal 121 can be fixed to the extension section 120 by welding or by bolts. In this embodiment, no specific limitation is made on the connection method between the pedal 121 and the extension section 120.

[0048] To prevent workers from slipping while standing on pedal 121, anti-slip textures can be installed on pedal 121.

[0049] Specifically, the installation mechanism 200 can be a snap-on clamping installation mechanism 200, an overlapping locking installation mechanism 200, a hook plug-in installation mechanism 200, etc. In this embodiment of the application, no specific limitation is made on the type of installation mechanism 200.

[0050] For example, the mounting mechanism 200 is a hook-type mounting mechanism 200, which includes a downwardly curved hook (the inner diameter of the hook matches the diameter of the step bar 1100) and a laterally telescopic positioning pin. The hook is attached to the step bar 1100 of the ladder 1000, and the positioning pin is inserted laterally into a preset hole in the step bar 1100 (or the gap in the ladder beam 1200), which restricts the device from sliding up and down and swaying left and right.

[0051] In one embodiment, such as Figures 1 to 4As shown, the mounting mechanism 200 includes at least one mounting portion 210, wherein the mounting portion 210 has a supporting section 211. One end of the supporting section 211 is connected to the connecting section 110, and the other end of the supporting section 211 protrudes outward toward the connecting section 110. When the bracket 100 is installed on the ladder 1000, the supporting section 211 overlaps the step bar 1100 of the ladder 1000, and the supporting section 211 is located on one side of the ladder beam 1200 of the ladder 1000.

[0052] When the support frame 100 is installed on the ladder 1000, the supporting section 211 directly overlaps the step bar 1100, which can directly transfer the load (including the weight of the device) of the worker standing on the step 121 to the step bar 1100. As the core load-bearing component of the ladder 1000, the step bar 1100 itself has sufficient load-bearing capacity, which can avoid uneven local stress caused by load dispersion. At the same time, the supporting section 211 is located on one side of the ladder beam 1200, which can form a lateral limit with the ladder beam 1200, reduce the swaying of the device along the width direction of the ladder 1000, and improve the stability during high-altitude operations.

[0053] The overlapping connection between the support section 211 and the step bar 1100 allows for initial fixation without complex installation steps. Workers on the ladder 1000 can easily position the support section 211 onto the step bar 1100 without tools or with only simple assistance. Further reinforcement can be achieved by using locking components 230 (such as locking pin 232). The overall operation is simple, meeting the needs of rapid installation and disassembly after use in high-altitude tower maintenance, reducing unnecessary work time.

[0054] In practical applications, the support section 211 can be directly attached to the rungs 1100 of the ladder 1000 without modifying the existing ladder 1000 (such as the standard rungs 1100 and ladder beams 1200 inside the tower). Its protruding length and shape can adapt to the spacing of rungs 1100 and the width of ladder beams 1200 of different specifications of ladder 1000, without the need for separate design for specific ladder 1000, reducing the adaptation cost of the device, and can be directly applied to various tower ladder 1000 scenarios.

[0055] In one embodiment, such as Figure 1 and Figure 4 As shown, the mounting section 210 also includes a limiting section 212, which is connected to the other end of the supporting section 211, and the limiting section 212 and the supporting section 211 form an L-shaped structure after being connected. When the bracket 100 is installed on the ladder 1000, the L-shaped structure formed by the limiting section 212 and the supporting section 211 is arranged around the outside of the ladder beam 1200 of the ladder 1000.

[0056] The L-shaped structure encloses the ladder beam 1200 of the ladder 1000 on its inner side. The supporting section 211 fits against one side of the ladder beam 1200, and the limiting section 212 fits against the other side of the ladder beam 1200, forming a circumferential constraint. This restricts the sliding of the device along the width of the ladder 1000, and prevents the device from detaching from the ladder beam 1200 due to the lateral force generated by workers stepping on the pedal 121. It solves the problem of easy displacement under unilateral force that may occur when simply overlapping the supporting section 211, ensuring the structural stability during high-altitude operations.

[0057] In practical applications, when installing the device on the ladder 1000, workers do not need to repeatedly adjust the device position. They only need to overlap the support section 211 on the step bar 1100, align the opening of the L-shaped structure with the ladder beam 1200 and fit it in. The installation position can be quickly found by the surrounding relationship between the support section 211 and the limiting section 212, without the need for additional measurement or calibration.

[0058] In one embodiment, such as Figure 1 As shown, along the height direction of the bracket 100, two mounting portions 210 are provided at intervals on the connecting section 110. When the bracket 100 is installed on the ladder 1000, the supporting sections 211 of the two mounting portions 210 overlap on two adjacent steps 1100 of the ladder 1000.

[0059] The load (including the device's own weight) on the worker standing on the footplate 121 is transferred to the two adjacent footplates 1100 through the two mounting parts 210, rather than being concentrated on a single footplate 1100. This distributed load-bearing avoids deformation of a single footplate 1100 due to local overload, while also reducing the single-point stress on the mounting parts 210 (such as the support section 211), thus extending the service life of the device and the ladder 1000.

[0060] In one embodiment, such as Figures 1 to 3 As shown, the installation mechanism 200 also includes a limiting part 220, which is mounted on the connecting section 110 and protrudes outward from the connecting section 110. The limiting part 220 and the supporting section 211 protrude on the same side of the connecting section 110. When the bracket 100 is installed on the ladder 1000, the limiting part 220 and the supporting section 211 are located on opposite sides of the ladder beam 1200 of the ladder 1000.

[0061] During installation, workers do not need to precisely align the ladder beam 1200 to a specific position. They only need to clamp the limiting part 220 and the supporting section 211 onto both sides of the ladder beam 1200, and the lateral positioning will be automatically completed through the clamping relationship between the two, without the need to repeatedly adjust the left and right positions of the device.

[0062] The limiting part 220 protrudes from one side of the ladder beam 1200 and forms a clamping state with the supporting section 211 on the other side of the ladder beam 1200, which can limit the sliding of the device along the ladder beam 1200. Compared with the support section 211 supporting only one side, the two-way clamping can offset the lateral force generated when the worker steps on the pedal 121, prevent the device from deviating from the ladder beam 1200 due to force, and improve the stability of the device.

[0063] Specifically, the distance between the limiting part 220 and the supporting section 211 can be designed to adapt to the thickness range of common tower ladder beams 1200. As long as the thickness of the ladder beam 1200 is within this range, it can be stably fixed by clamping the two together, without the need to design a separate installation mechanism 200 for ladder beams 1200 of different thicknesses.

[0064] In one embodiment, such as Figures 1 to 5 As shown, the mounting mechanism 200 also includes a locking assembly 230, which is mounted on opposite sides of the connecting section 110, along with the mounting part 210. The locking assembly 230 is used to lock the bracket 100 onto the rung 1100 of the ladder 1000.

[0065] The supporting section 211 of the installation part 210 overlaps the foot rod 1100 from one side of the connecting section 110, and the locking component 230 locks the foot rod 1100 from the other side. The two are connected to the foot rod 1100 on both sides of the connecting section 110, which not only prevents the installation part 210 from slipping upward due to excessive load, but also prevents the locking component 230 from loosening downward due to unilateral force. It can counteract the longitudinal force (such as vertical vibration, accidental pulling) generated when the worker steps on the pedal 121, and solve the hidden danger of easy displacement and loosening of simple overlap. It is especially suitable for the vibration environment of tower high-altitude operation.

[0066] The locking assembly 230 rigidly connects the bracket 100 and the footplate 1100 through mechanical locking. Compared with the overlapping fixation by gravity or friction alone, the locking assembly 230 can withstand greater lateral and longitudinal loads. Even if the operator operates sideways on the footplate 121 and generates a large lateral force, the locking assembly 230 can limit the shaking of the device and ensure load-bearing stability.

[0067] Specifically, the locking component 230 can be selected from a pin-type locking structure, a bolt-type locking structure, an elastic snap-locking structure, etc. In this embodiment, the type of locking component 230 is not specifically limited.

[0068] In one embodiment, such as Figure 1 and Figure 5As shown, the locking assembly 230 includes a locking part 231 and a locking pin 232. The locking part 231 and the locking pin 232 are detachably connected. The locking part 231 has a receiving groove 2311 for holding the ladder 1000's footrail 1100. The locking part 231 also has a socket 2312 corresponding to the locking pin, which can be inserted into the socket 2312. The locking assembly 230 has a locked state and an unlocked state. In the locked state, the locking pin is inserted into the socket 2312, locking the ladder 1000's footrail 1100 in the receiving groove 2311, preventing the footrail 1100 from detaching from the receiving groove 2311. In the unlocked state, the locking pin disengages from the socket 2312, allowing the footrail 1100 to be removed from or placed back into the receiving groove 2311.

[0069] The receiving groove 2311 of the locking part 231 can completely cover the step bar 1100 of the ladder 1000, forming a preliminary positioning; after the locking pin 232 is inserted into the insertion hole 2312, it can form a rigid constraint from the direction perpendicular to the step bar 1100, directly restricting the step bar 1100 from coming out along the opening direction of the receiving groove 2311. It can resist the external force generated by tower vibration and personnel stepping on it, and prevent the locking component 230 from being accidentally unlocked.

[0070] Switching between locked and unlocked states is accomplished simply by "inserting / removing the locking pin 232," requiring no complex tools or multiple steps. Workers can insert or remove the locking pin 232 with one hand while on the ladder 1000, eliminating the need to use both hands to adjust the structure. This significantly reduces the difficulty of working at heights, minimizes unnecessary work time, and improves maintenance efficiency.

[0071] The entire locking process is achieved solely through the locking part 231 and the locking pin 232, eliminating the need for drilling, welding, or scraping of the ladder 1000's steps 1100. This fully protects the original structure of the ladder 1000, preventing permanent damage to the ladder 1000 caused by the installation device and reducing subsequent maintenance costs.

[0072] Specifically, in combination Figure 3 and Figure 5 As shown, a chain 233 can be installed on the bracket 100 and connected to the locking pin 232. In the unlocked state, the locking pin 232 is fixed by the chain 233 to prevent the locking pin 232 from falling off.

[0073] Specifically, in the locked state, a limiting element can be set on the locking pin to limit the locking pin and prevent it from sliding or loosening on its own, causing the locking pin to automatically disengage from the socket 2312.

[0074] In one embodiment, such as Figure 1 and Figure 5As shown, when the bracket 100 is mounted on the ladder 1000, the locking part 231 is at least partially mounted on the bottom of the step bar 1100 of the ladder 1000.

[0075] In normal operation, the device is mainly subjected to downward forces. However, in complex high-altitude environments, there may be upward risks. For example, when a worker stands on the footplate 121 and applies a downward force to it, the supporting section 211 applies a downward force to the foot rod 1100. If the supporting section 211 remains stationary, the locking part 231 may tilt upwards. The locking part 231, located at the bottom of the foot rod 1100, specifically prevents the device from moving upwards and detaching from the foot rod 1100.

[0076] If the locking pin 232 bears all the load, long-term use will easily lead to deformation of the pin or wear of the insertion hole 2312. After the bottom of the locking part 231 supports the pedal 1100, it can share most of the longitudinal load, so that the locking pin 232 only needs to bear the function of preventing the pedal 1100 from coming out laterally, which greatly reduces the stress on the locking pin 232, reduces the wear of parts, and extends the service life of the locking assembly 230.

[0077] In one embodiment, such as Figure 2 and Figure 3 As shown, the connecting section 110 and the extension section 120 are connected at an angle.

[0078] The connecting section 110 and the extension section 120 are set at an angle, and the extension direction of the extension section 120 can be adjusted according to the positional relationship between the ladder 1000 inside the tower and the component to be maintained (such as the cable clamp 2000).

[0079] For example, when the connecting section 110 and the extension section 120 are designed at a 90° right angle, the extension section 120 can extend outward perpendicular to the ladder 1000, accurately reaching the distant maintenance point on the side of the ladder 1000; if designed at a 120° obtuse angle, it can adapt to the curvature of the inner wall of the tower, avoiding collision between the extension section 120 and the tower wall. The angle design can flexibly utilize the limited space inside the tower, ensuring that the step 121 stops precisely below the part to be maintained, eliminating the problem of the traditional ladder 1000 being unable to reach it.

[0080] Specifically, the angle between the connecting segment 110 and the extension segment 120 can be set to a fixed angle or an adjustable angle. In this embodiment, no specific restrictions are placed on the connection relationship between the connecting segment 110 and the extension segment 120.

[0081] For example, the connecting segment 110 and the extension segment 120 are connected by a hinge, that is, the extension segment 120 can rotate around the connecting segment 110, so that the angle between the connecting segment 110 and the extension segment 120 is adjustable.

[0082] According to an embodiment of the present invention, on the other hand, as... Figures 1 to 5 As shown, a wind turbine generator is also provided, including a tower and a tower ladder extension device.

[0083] Specifically, such as Figure 1 As shown, a ladder 1000 is installed inside the tower, and a support 100 is detachably mounted on the ladder 1000 via an installation mechanism.

[0084] This wind turbine, since it includes a tower ladder extension device, has the same effect as a tower ladder extension device, and will not be described in detail here.

[0085] The terms "upper" and "lower" are used to describe the relative positions of the various structures in the accompanying drawings. They are only for clarity of description and are not intended to limit the scope of implementation of this application. Any changes or adjustments to the relative positions without substantially altering the technical content shall also be considered within the scope of implementation of this application.

[0086] It should be noted that, in this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0087] Furthermore, in this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0088] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of this disclosure. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0089] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A tower section extension device, characterized in that, include: The bracket (100) includes a connecting section (110) and an extension section (120) extending outward from the connecting section (110), and the extension section (120) is provided with a pedal (121). An installation mechanism (200) is provided on the connecting section (110), and the installation mechanism (200) is used to detachably mount the bracket (100) on the ladder (1000); When the bracket (100) is mounted on the ladder (1000), the mounting mechanism (200) is connected to the ladder (1000), the extension section (120) extends to the outside of the ladder (1000), and the tread (121) is located on the outside of the ladder (1000).

2. The tower climb extension of claim 1, wherein, The mounting mechanism (200) includes at least one mounting part (210), the mounting part (210) having a supporting section (211), one end of the supporting section (211) being connected to the connecting section (110), and the other end protruding outward toward the connecting section (110); When the bracket (100) is placed on the ladder (1000), the supporting section (211) overlaps the step bar (1100) of the ladder (1000) and is located on one side of the ladder beam (1200) of the ladder (1000).

3. The tower ladder extension device according to claim 2, characterized in that, The mounting section (210) further includes a limiting section (212), which is connected to the other end of the supporting section (211) to form an L-shaped structure; When the bracket (100) is installed on the ladder (1000), the limiting section (212) and the supporting section (211) are arranged around the outside of the ladder beam (1200) of the ladder (1000).

4. The tower ladder extension device according to claim 3, characterized in that, Along the height direction of the bracket (100), two mounting portions (210) are provided at intervals on the connecting section (110). When the bracket (100) is mounted on the ladder (1000), the two mounting parts (210) are respectively attached to the two adjacent steps (1100) of the ladder (1000).

5. The tower ladder extension device according to claim 2, characterized in that, The installation mechanism (200) further includes a limiting part (220), which is disposed on the connecting section (110) and protrudes outward toward the connecting section (110); When the bracket (100) is installed on the ladder (1000), the limiting part (220) and the supporting section (211) are located on opposite sides of the ladder beam (1200) of the ladder (1000).

6. The tower ladder extension device according to any one of claims 2 to 5, characterized in that, The installation mechanism (200) further includes a locking component (230), which is provided on both sides of the connecting section (110) and the installation part (210). The locking component (230) is used to lock the bracket (100) onto the step bar (1100) of the ladder (1000).

7. The tower ladder extension device according to claim 6, characterized in that, The locking assembly (230) includes a locking part (231) and a locking pin (232). The locking part (231) is provided with a receiving groove (2311) for accommodating the step bar (1100) of the ladder (1000), and the locking part (231) is provided with a socket (2312) for the locking pin to be inserted. The locking assembly (230) has a locked state and an unlocked state. In the locked state, the locking pin is inserted into the socket (2312) to lock the ladder (1000) runner (1100) in the receiving groove (2311). In the unlocked state, the locking pin is disengaged from the socket (2312) to allow the ladder (1000) runner (1100) to be removed from the receiving groove (2311).

8. The tower ladder extension device according to claim 7, characterized in that, When the bracket (100) is mounted on the ladder (1000), the locking part (231) is at least partially located at the bottom of the step (1100) of the ladder (1000).

9. The tower ladder extension device according to claim 6, characterized in that, The connecting segment (110) and the extension segment (120) are set at an angle.

10. A wind turbine generator, characterized in that, include: The tower has an internal ladder (1000). The tower ladder extension device according to any one of claims 1 to 9, wherein the bracket (100) is detachably mounted on the ladder (1000) via the mounting mechanism (200).

Images