Hub ladder of wind generating set

Abstract

The utility model provides a hub ladder of a wind generating set, which is used for being mounted in a hub main body, two groups of opposite mounting surfaces are arranged in the hub main body, the hub ladder comprises a ladder main body, a connecting plate and a fixing frame, one end of the ladder main body is provided with a fixing part, and the fixing part is connected with one group of mounting surfaces. A connecting column is arranged at the other end of the ladder main body, a connecting plate is arranged on the other group of mounting surfaces in a longitudinal sliding manner through a first connecting assembly, a mounting plate connected through a hinge is arranged at the end part of the connecting plate, a fixing frame is arranged on the mounting plate in a transverse sliding manner through a second connecting assembly, and a cavity for accommodating the connecting column is defined by the fixing frame and the mounting plate; the connecting column is slidably arranged in the cavity along the axis of the connecting column. The hub ladder can adapt to the deviation of two groups of mounting surfaces on the inner side of a hub in multiple directions in the mounting and using processes, and effectively prevents parts at the mounting ends from being damaged due to long-term stress influence after being mounted with difficulty.

Description

Technical Field

[0001] The utility model relates to the technical field of wind power generation, and particularly relates to a hub ladder of a wind turbine generator set. Background Art

[0002] As an important part of renewable energy, the safety and efficiency of wind turbines have always been the focus of research. Most of the interiors of the hubs of wind turbines are equipped with ladders to carry workers, which facilitates the maintenance of the interiors of the hubs of wind turbines. As an important facility for maintaining and overhauling wind turbines, the design and optimization of hub ladders are of great significance for ensuring the normal operation of wind turbines.

[0003] The self-structure and installation method of the hub ladder must be able to bear the weight of maintenance personnel and ensure stability under various weather conditions. At present, there are some spaces in the hub of the wind turbine with large dimensional errors, and there are errors in the angles and spacings of the installation surfaces at both ends of the ladder. Since the hub is a casting, there are large errors when the hub ladder manufactured according to the design dimensions is installed in this space, resulting in inability to install or damage to the components at the installation end due to long-term stress after forced installation.

[0004] Therefore, in view of this, a hub ladder of a wind turbine generator set is proposed to solve the above technical problems. Content of the Utility Model

[0005] Aiming at the deficiencies of the prior art, the utility model provides a hub ladder of a wind turbine generator set to solve the technical problems that when the traditional ladder used inside the generator hub is installed, the installation surfaces at both ends of the ladder are prone to deviation, resulting in the inability to install the ladder or the components at the installation end being easily damaged due to long-term stress after forced installation as mentioned in the above background art.

[0006] To achieve the above object, the utility model provides the following technical solution. A hub ladder of a wind turbine generator set is used for installation inside a hub main body. There are two sets of opposite installation surfaces inside the hub main body, including:

[0007] A ladder main body, with a fixing part at one end, the fixing part is connected to one of the sets of installation surfaces, and a connecting column at the other end;

[0008] A connecting plate, which is longitudinally slidably arranged on the other set of installation surfaces through a first connecting component, and an installation plate is arranged at the end of the connecting plate through a hinge; and

[0009] A fixing frame, which is horizontally slidably arranged on the installation plate through a second connecting component, and encloses a cavity for accommodating the connecting column with the installation plate, and the connecting column is slidably arranged along its axis in the cavity.

[0010] In a preferred embodiment, the fixing part includes a fixing plate, a longitudinal first sliding groove is formed in the fixing plate, a first screw is slidably inserted into the first sliding groove, and the first screw is screwed onto one of the mounting surfaces.

[0011] In a preferred embodiment, the first connecting component includes a second screw, a longitudinal second sliding groove is formed in the connecting plate, the second screw is slidably inserted into the second sliding groove, and is screwed onto the other mounting surface.

[0012] In a preferred embodiment, the second connecting component includes:

[0013] A connecting wing plate, which is arranged at the end of the fixing frame; and

[0014] A third screw, which is inserted through the connecting wing plate, a transverse third sliding groove is formed in the mounting plate, the third screw is slidably inserted into the third sliding groove and is screwed with a nut.

[0015] In a preferred embodiment, both ends of the hinge are fixedly connected to the connecting plate and the mounting plate by bolts and / or welding.

[0016] Compared with the prior art, the present utility model has the following beneficial effects:

[0017] When the hub ladder is in use, first, the connecting plate is longitudinally slidably mounted on one of the mounting surfaces through the first connecting component, the fixing frame is transversely slidably arranged on the mounting plate through the second connecting component, and the angle of the mounting plate is rotated through the hinge. At the same time, the longitudinal position of the connecting plate on the mounting surface is adjusted, and the transverse position of the fixing frame on the mounting plate is adjusted. Then, the connecting column at the end of the ladder body is inserted into the cavity formed between the fixing frame and the mounting plate, and at the same time, the connecting column slides in the cavity along its axis, so that the fixing part at the other end of the ladder body can be attached to the other mounting surface. Finally, the fixing part is fixed to the other mounting surface, and the installation of the hub ladder can be completed. During the installation and use of the hub ladder, it can adapt to the deviations in multiple directions of the two sets of mounting surfaces on the inner side of the hub, effectively preventing the components at the installation end from being damaged due to long-term stress after forced installation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the specific embodiments of the present utility model, the drawings required for use in the specific embodiments will be briefly introduced below. In all the drawings, the components or parts do not necessarily draw according to the actual scale.

[0019] Figure 1Schematic diagram of the installation structure of a hub ladder for a wind turbine provided by the present utility model;

[0020] Figure 2 Schematic three-dimensional structure diagram of a hub ladder for a wind turbine of the present utility model;

[0021] Figure 3 Schematic diagram of the structure of a connecting plate in a hub ladder for a wind turbine of the present utility model;

[0022] Figure 4 Schematic diagram of the structure of a fixing frame in a hub ladder for a wind turbine of the present utility model.

[0023] Reference numerals:

[0024] 1, hub body; 11, mounting surface;

[0025] 2, ladder body; 21, fixing plate; 22, first chute; 23, first screw; 24, connecting column;

[0026] 3, connecting plate; 31, second chute; 32, second screw; 33, hinge; 34, mounting plate; 35, third chute;

[0027] 4, fixing frame; 41, connecting wing plate; 42, third screw. Detailed implementation manners

[0028] The present utility model will be further described in detail below with reference to the accompanying drawings. It is necessary to point out here that the following detailed implementation manners are only used to further illustrate the present utility model and cannot be understood as limiting the protection scope of the present utility model. Those skilled in the art can make some non-essential improvements and adjustments to the present utility model according to the above application content.

[0029] Embodiment:

[0030] As Figures 1 to 3 shown, the present utility model provides a hub ladder for a wind turbine, which is used to be installed in the hub body 1. There are two sets of opposite mounting surfaces 11 in the hub body 1. It includes a ladder body 2. One end of the ladder body 2 is provided with a fixing part, the fixing part is connected to one of the sets of mounting surfaces 11, and the other end is provided with a connecting column 24. The fixing part includes a fixing plate 21. A longitudinal first chute 22 is opened on the fixing plate 21. A first screw 23 is slidably inserted through the first chute 22, and the first screw 23 is screwed onto one of the sets of mounting surfaces 11.

[0031] One end of the ladder main body 2 can be connected to one set of mounting surfaces 11 through the cooperation of the fixing plate 21 and the first screw 23. And through the arrangement of the first chute 22, the fixing plate 21 can longitudinally slide along one set of mounting surfaces 11 to adjust the mounting height of the ladder main body 2.

[0032] As Figure 2 , 3 shown, in this embodiment, the connecting plate 3 is longitudinally slidably arranged on the other set of mounting surfaces 11 through the first connecting component. An installation plate 34 connected by a hinge 33 is arranged at the end of the connecting plate 3. The first connecting component includes a second screw 32. A longitudinal second chute 31 is formed on the connecting plate 3. The second screw 32 slidably penetrates through the second chute 31 and is screwed on the other set of mounting surfaces 11.

[0033] Among them, the connecting plate 3 can be installed on the other set of mounting surfaces 11 through the second screw 32. And through the arrangement of the second chute 31, the connecting plate 3 can longitudinally slide on the other set of mounting surfaces 11 to adjust the mounting height of the connecting plate 3. Cooperating with the adjustment of the fixing plate 21, when the two sets of mounting surfaces 11 form a certain angle, both ends of the ladder main body 2 can be connected to the two sets of mounting surfaces 11. Through the arrangement of the hinge 33, the angle between the installation plate 34 and the connecting plate 3 can be adjusted to adapt to the installation angle of the ladder main body 2.

[0034] Both ends of the hinge 33 are fixedly connected to the connecting plate 3 and the installation plate 34 by bolts and / or welding. The appropriate installation method of the hinge 33 can be selected according to the actual weight borne by the ladder main body 2 to adapt to the use requirements.

[0035] As Figure 3 , 4 shown, in this embodiment, a fixing frame 4 that is horizontally slidably connected through a second connecting component is arranged on the installation plate 34. The fixing frame 4 and the installation plate 34 enclose a cavity for accommodating the connecting column 24. The connecting column 24 is slidably arranged along its axis in the cavity. The second connecting component includes a connecting wing plate 41 arranged at the end of the fixing frame 4. A third screw 42 penetrates through the connecting wing plate 41. A horizontal third chute 35 is formed on the installation plate 34. The third screw 42 slidably penetrates through the third chute 35 and is screwed with a nut.

[0036] Among them, the fixing bracket 4 can be installed on the mounting plate 34 through the third screw 42, and the lateral position of the fixing bracket 4 can be adjusted through the arrangement of the third sliding groove 35 to adapt to the lateral deviation of the mounting points at both ends of the ladder body 2. Moreover, the connecting column 24 can slide within the cavity formed by the fixing bracket 4 and the mounting plate 34 to adapt to the spacing deviation of the mounting points at both ends of the ladder body 2. By coordinating with the arrangements of the first sliding groove 22, the second sliding groove 31, and the third sliding groove 35, the positions and angles of the mounting points at both ends of the ladder body 2 in multiple directions can be adjusted, so that both ends of the ladder body 2 can be reliably connected to two groups of mounting surfaces 11 with large errors.

[0037] Specific usage method and beneficial effects of the present utility model:

[0038] When the hub ladder is in use, first, the connecting plate 3 is longitudinally slidably installed on one group of mounting surfaces 11 through the cooperation of the second screw 32 and the second sliding groove 31. The fixing bracket 4 is transversely slidably arranged on the mounting plate 34 through the cooperation of the third screw 42 and the third sliding groove 35, and the angle of the mounting plate 34 is rotated through the hinge 33. At the same time, the longitudinal position of the connecting plate 3 on the mounting surface 11 is adjusted, and the transverse position of the fixing bracket 4 on the mounting plate 34 is adjusted. Then, the connecting column 24 at the end of the ladder body 2 is inserted into the cavity formed between the fixing bracket 4 and the mounting plate 34. At the same time, the connecting column 24 slides along its axis within the cavity, and the fixing bracket 4 is tightened, so that the fixing part at the other end of the ladder body 2 can be attached to the other group of mounting surfaces 11. Finally, the fixing part and the other group of mounting surfaces 11 are fixed through the cooperation of the first sliding groove 22 and the first screw 23, and the installation of the hub ladder can be completed. During the installation and use of the hub ladder, it can adapt to the deviations in multiple directions of the two groups of mounting surfaces 11 inside the hub, effectively preventing the components at the installation end from being damaged due to long-term stress after forced installation.

[0039] The above shows and describes the basic principles, main features, and advantages of the present utility model. For those skilled in the art, it is obvious that the present utility model is not limited to the details of the above exemplary embodiments. Based on the present utility model, some modifications or improvements can be made, which are obvious to those skilled in the art. Therefore, these modifications or improvements made without departing from the spirit of the present utility model all fall within the scope of protection required by the present utility model.

Claims

1. A hub ladder for a wind turbine generator, which is used to be installed inside a hub body (1), and two sets of opposite mounting surfaces (11) are arranged inside the hub body (1), and is characterized in that, Comprising: A ladder main body (2) with a fixing part provided at one end, the fixing part being connected to one set of the mounting surfaces (11), and a connecting column (24) provided at the other end; A connecting plate (3) slidably arranged longitudinally on the other set of the mounting surfaces (11) through a first connecting component, and a mounting plate (34) connected by a hinge (33) being provided at the end of the connecting plate (3); and A fixing bracket (4) slidably arranged transversely on the mounting plate (34) through a second connecting component, and enclosing a cavity for accommodating the connecting column (24) with the mounting plate (34), the connecting column (24) being slidably arranged along its axis in the cavity.

2. The hub ladder of a wind turbine according to claim 1, characterized in that: The fixing part includes a fixing plate (21), a longitudinal first sliding groove (22) being formed in the fixing plate (21), a first screw (23) being slidably inserted through the first sliding groove (22) and screwed onto one set of the mounting surfaces (11).

3. A hub ladder of a wind turbine according to claim 1, characterized in that: The first connecting component includes a second screw (32), a longitudinal second sliding groove (31) being formed in the connecting plate (3), the second screw (32) being slidably inserted through the second sliding groove (31) and screwed onto the other set of the mounting surfaces (11).

4. A hub ladder of a wind turbine according to claim 1, characterized in that, The second connecting component includes: A connecting wing plate (41) provided at the end of the fixing bracket (4); and A third screw (42) inserted through the connecting wing plate (41), a transverse third sliding groove (35) being formed in the mounting plate (34), the third screw (42) being slidably inserted through the third sliding groove (35) and screwed with a nut.

5. A hub ladder of a wind turbine according to claim 1, characterized in that: Both ends of the hinge (33) are fixedly connected to the connecting plate (3) and the mounting plate (34) by bolts and / or welding.

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