Automatic opening and closing device for safety cover plate of crawling ladder channel in tower drum
By designing an automatic opening and closing device in the climbing ladder passage inside the tower, and utilizing the sliding structure of the support plate and the climber, the safety cover can be opened and closed automatically, solving the problem of manual operation of the cover during the maintenance of wind turbine generator sets, improving climbing efficiency and reducing workload.
Patent Information
- Application Number
- CN202520256785.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-18
- Publication Date
- 2026-01-09
- Estimated Expiration
- 2035-02-18
AI Technical Summary
Wind turbine maintenance personnel need to frequently open and close the platform cover while climbing the tower, which increases the workload and physical exertion.
An automatic opening and closing device for the safety cover of the ladder passage inside the tower was designed. It utilizes a support plate, connecting block and sliding groove structure, and the support plate is slid by the climber to realize the automatic opening and closing of the safety cover, reducing manual operation.
It saves workers time during the climbing process, improves maintenance efficiency, and reduces workload.
Smart Images

Figure CN223781325U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of tower technology, specifically to an automatic opening and closing device for the safety cover of the ladder passage inside a tower. Background Technology
[0002] The operating status of wind turbine generators is related to the efficiency of wind power generation. Currently, wind turbine generator maintenance personnel need to climb nearly 100 meters high ladders to enter the nacelle. When maintenance personnel climb or use equipment to pass through each tower platform, the platform cover needs to be opened and closed after passing through the tower platform, which increases the workload and physical exertion of maintenance personnel.
[0003] A search revealed Chinese Patent Publication No. CN 210768328 U, published on June 16, 2020, which discloses an automatic platform cover device for efficiently utilizing the space of a wind turbine tower. The paper states that "the control system controls the drive motor, the drive motor is fixed on a fixed bracket, the drive motor drives the drive box to work, and the drive box drives the chain." When workers climb inside the tower, the safety cover needs to be opened and closed manually, increasing the workers' working time. In view of this, in-depth research was conducted to address the above problems, leading to this case. Utility Model Content
[0004] The purpose of this invention is to provide an automatic opening and closing device for the safety cover of the ladder passage inside the tower, so as to solve the problems mentioned in the background art.
[0005] To achieve the above objectives, this utility model provides the following technical solution: an automatic opening and closing device for a safety cover of a ladder passage inside a tower, comprising a tower, partitions, and a climbing ladder. The inner side of the tower is provided with multiple partitions, and a climbing ladder is installed on the left side inside the partitions. The outer side of the climbing ladder is connected to the inner wall of the tower. A climbing device is installed on the right side of the climbing ladder, and a movable structure is installed on the outer side of the climbing device.
[0006] The movable structure includes a support plate, connecting blocks, and a sliding groove. A support plate is installed on the lower right wall of the climber. Connecting blocks are installed on both sides of the right wall of the support plate. The connecting blocks are installed inside the sliding groove, which is located inside a first connecting plate. The first connecting plate is installed on the inner wall of the tower. Multiple connecting columns are installed on both sides above the support plate. A fixing column is installed above one of the multiple connecting columns on one side. A groove is provided above the fixing column, which is located inside a partition. A storage slot is provided above the groove, which is located inside the partition. A safety cover is provided inside the storage slot. One side of the safety cover is connected to the partition via a torsion spring. A second connecting plate is installed on the right side of the safety cover.
[0007] Preferably, the tower and the partition are fixedly connected, and the climbing ladder and the climbing device are slidably connected.
[0008] Preferably, the climbing ladder and the first connecting plate are arranged parallel to each other, and the climber and the support plate are arranged perpendicular to each other.
[0009] Preferably, the support plate and the connecting column are fixedly connected, and the connecting column and the fixed column are arranged perpendicular to each other.
[0010] Preferably, the support plate and the connecting block are fixedly connected, and the connecting block and the sliding groove are slidably connected.
[0011] Preferably, the slidable connection is between the chute and the first connecting plate, and the fixed connection is between the first connecting plate and the inner wall of the tower.
[0012] Preferably, the partitions are integrated with the grooves and storage tanks, and the grooves are correspondingly arranged with the climbing ladder, the first connecting plate and the fixing column.
[0013] Preferably, the torsion spring and the safety cover are rotatably connected, and the safety cover and the storage tank are correspondingly arranged.
[0014] Preferably, the safety cover plate and the second connecting plate are fixedly connected, and the outer walls of the second connecting plate and the first connecting plate are both arc-shaped.
[0015] Preferably, the interior of the storage tank is in communication with the interior of the recess, and the top of the safety cover, the top of the storage tank, and the top of the safety cover are on the same horizontal line.
[0016] Compared with existing technologies, the beneficial effects of this utility model are:
[0017] By setting up a support plate, connecting block, and slide, the worker stands on top of the support plate and activates the climbing device, causing the connecting block connected to the support plate to slide inside the slide. The support plate then causes the fixed column connected to the connecting column to slide upward, allowing the worker to climb to the top of the tower to perform maintenance. During the ascent, the worker passes the fixed column above the connecting column. As the worker ascends, the fixed column pushes the safety cover to rotate on the outside of the torsion spring, separating the safety cover from the storage tank. This allows the worker to move upward unimpeded, saving working time and improving the efficiency of the device. After the worker passes the safety cover, the torsion spring automatically closes the safety cover. Attached Figure Description
[0018] 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 drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort. In all drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.
[0019] Figure 1 This is a frontal cross-sectional view of the present invention.
[0020] Figure 2 This is a front view cross-sectional structural diagram of the movable structure of this utility model;
[0021] Figure 3 This is a cross-sectional structural diagram of the movable structure of this utility model;
[0022] Figure 4 This is a partial top view cross-sectional diagram of the movable structure of this utility model.
[0023] In the diagram: 1. Tower; 2. Baffle; 3. Climbing ladder; 4. Climber; 5. Moving structure; 501. Support plate; 502. Connecting block; 503. Slide groove; 504. First connecting plate; 505. Connecting column; 506. Fixed column; 507. Groove; 508. Safety cover; 509. Storage tank; 510. Second connecting plate; 511. Torsion spring. Detailed Implementation
[0024] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.
[0025] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.
[0026] The technical solutions of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.
[0027] Please see Figure 1-4 This utility model provides a technical solution for an automatic opening and closing device for a safety cover of a ladder passage inside a tower: an automatic opening and closing device for a safety cover of a ladder passage inside a tower includes a tower 1, a partition 2 and a climbing ladder 3. Multiple partitions 2 are provided on the inner side of the tower 1. A climbing ladder 3 is installed on the left side inside the partition 2. The outer side of the climbing ladder 3 is connected to the inner wall of the tower 1. A climbing device 4 is installed on the right side of the climbing ladder 3. A movable structure 5 is installed on the outer side of the climbing device 4.
[0028] The movable structure 5 includes a support plate 501, a connecting block 502, and a slide 503. The support plate 501 is installed on the lower right wall of the climber 4. The connecting blocks 502 are installed on both sides of the right wall of the support plate 501. The connecting blocks 502 are installed inside the slide 503. The slide 503 is located inside the first connecting plate 504. The first connecting plate 504 is installed on the inner wall of the tower 1. Multiple connecting columns 505 are installed on both sides above the support plate 501. A fixing column 506 is installed above the multiple connecting columns 505 on one side. A groove 507 is provided above the fixing column 506. The groove 507 is located inside the partition 2. A storage slot 509 is provided above the groove 507. The storage slot 509 is located inside the partition 2. A safety cover 508 is provided inside the storage slot 509. One side of the safety cover 508 is connected to the partition 2 by a torsion spring 511. A second connecting plate 510 is installed on the right side of the safety cover 508.
[0029] When a problem occurs with the device, the worker stands above the support plate 501 and activates the climbing device 4 to make the connecting block 502 connected to the support plate 501 slide inside the slide groove 503. The support plate 501 causes the fixed column 506 connected to the connecting column 505 to slide upward, so that the worker can climb to the top of the tower 1 to repair the device via the climbing device 4. During the ascent, the worker uses the fixed column 506 above the connecting column 505 to push the safety cover 508 to rotate outside the torsion spring 511. The safety cover 508 separates from the storage tank 509, allowing the worker to move upward without obstruction, saving the worker's working time and improving the working efficiency of the device.
[0030] The tower 1 and the partition 2 are fixedly connected, while the climbing ladder 3 and the climbing device 4 are slidably connected.
[0031] The climbing ladder 3 and the first connecting plate 504 are arranged parallel to each other, and the climbing device 4 and the support plate 501 are arranged perpendicular to each other.
[0032] The support plate 501 and the connecting column 505 are fixedly connected, and the connecting column 505 and the fixed column 506 are set perpendicular to each other.
[0033] The support plate 501 and the connecting block 502 are fixedly connected, while the connecting block 502 and the slide groove 503 are slidably connected.
[0034] The slid groove 503 is slidably connected to the first connecting plate 504, and the first connecting plate 504 is fixedly connected to the inner wall of the tower 1.
[0035] The partition 2 is integrated with the groove 507 and the storage tank 509, and the groove 507 is correspondingly set with the climbing ladder 3, the first connecting plate 504 and the fixing column 506.
[0036] The torsion spring 511 is rotatably connected to the safety cover 508, and the safety cover 508 is correspondingly set to the storage tank 509.
[0037] The safety cover 508 is fixedly connected to the second connecting plate 510, and the outer wall of the second connecting plate 510 and the outer wall of the first connecting plate 504 are both arc-shaped.
[0038] The interior of the storage tank 509 is connected to the interior of the recess 507, and the top of the safety cover 508, the top of the storage tank 509, and the top of the safety cover 508 are on the same horizontal line.
[0039] Although embodiments of the present utility have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present utility, the scope of which is defined by the appended claims and their equivalents.
Claims
1. An automatic opening and closing device for a safety cover plate of a ladder passage inside a tower, comprising a tower (1), a partition plate (2), and a ladder (3), characterized in that: The inner side of the tower (1) is provided with multiple partitions (2). A climbing ladder (3) is installed on the left side inside the partition (2). The outer side of the climbing ladder (3) is connected to the inner wall of the tower (1). A climbing device (4) is installed on the right side of the climbing ladder (3). A moving structure (5) is installed on the outer side of the climbing device (4). The movable structure (5) includes a support plate (501), connecting blocks (502), and a slide (503). The support plate (501) is installed below the right wall of the climber (4). Connecting blocks (502) are installed on both sides of the right wall of the support plate (501). The connecting blocks (502) are installed inside the slide (503). The slide (503) is located inside the first connecting plate (504). The first connecting plate (504) is installed on the inner wall of the tower (1). Multiple connecting columns (505) are installed on both sides above the support plate (501). A fixing post (506) is installed above the connecting post (505). A groove (507) is provided above the fixing post (506). The groove (507) is located inside the partition (2). A storage slot (509) is provided above the groove (507). The storage slot (509) is located inside the partition (2). A safety cover (508) is provided inside the storage slot (509). One side of the safety cover (508) is connected to the partition (2) by a torsion spring (511). A second connecting plate (510) is installed on the right side of the safety cover (508).
2. The automatic opening and closing device for the safety cover of the ladder passage inside the tower according to claim 1, characterized in that: The tower (1) and the partition (2) are fixedly connected, and the climbing ladder (3) and the climbing device (4) are slidably connected.
3. The automatic opening and closing device for the safety cover of the ladder passage inside the tower according to claim 2, characterized in that: The climbing ladder (3) and the first connecting plate (504) are arranged parallel to each other, and the climbing device (4) and the support plate (501) are arranged perpendicular to each other.
4. The automatic opening and closing device for the safety cover of the ladder passage inside the tower according to claim 3, characterized in that: The support plate (501) and the connecting column (505) are fixedly connected, and the connecting column (505) and the fixed column (506) are perpendicular to each other.
5. The automatic opening and closing device for the safety cover of the ladder passage inside the tower according to claim 4, characterized in that: The support plate (501) and the connecting block (502) are fixedly connected, and the connecting block (502) and the sliding groove (503) are slidably connected.
6. The automatic opening and closing device for the safety cover of the ladder passage inside the tower according to claim 5, characterized in that: The slid groove (503) is slidably connected to the first connecting plate (504), and the first connecting plate (504) is fixedly connected to the inner wall of the tower (1).
7. The automatic opening and closing device for the safety cover of the ladder passage inside the tower according to claim 6, characterized in that: The partition (2) is integrated with the groove (507) and the storage tank (509), and the groove (507) is correspondingly set with the climbing ladder (3), the first connecting plate (504) and the fixing column (506).
8. The automatic opening and closing device for the safety cover of the ladder passage inside the tower according to claim 7, characterized in that: The torsion spring (511) and the safety cover (508) are rotatably connected, and the safety cover (508) and the storage tank (509) are correspondingly arranged.
9. The automatic opening and closing device for the safety cover of the ladder passage inside the tower according to claim 8, characterized in that: The safety cover (508) and the second connecting plate (510) are fixedly connected, and the outer wall of the second connecting plate (510) and the outer wall of the first connecting plate (504) are both arc-shaped.
10. The automatic opening and closing device for the safety cover of the ladder passage inside the tower according to claim 9, characterized in that: The interior of the storage tank (509) is connected to the interior of the groove (507), and the top of the safety cover (508), the top of the storage tank (509), and the top of the safety cover (508) are on the same horizontal line.
Citation Information
Patent Citations
Automatic platform cover plate device utilizing space of fan tower
CN210768328U