Wind power cable twisting limiting protection mechanism

Abstract

The utility model provides a kind of wind power cable twisting limiting protection mechanism. The wind power cable twisting limiting protection mechanism includes support assembly, bearing, end seat, slide bar, mounting seat, mounting rack and cable clamp, two The support assembly is aligned in tower drum, and the bearing is arranged in the cable twisting hole, the bearing inner ring is equipped with annular end seat, and multiple slide bars are vertically arranged between upper and lower end seats, annular mounting seat is parallel between two end seats, and is penetrated by all slide bars, mounting seat is equipped with mounting rack, and multiple cable clamps are fixed. The wind power cable twisting limiting protection mechanism provided by the utility model solves the problem of large friction during the yaw process of the existing wind power cable twisting.

Description

Technical Field

[0001] This utility model relates to the field of wind power, specifically to a limit protection mechanism for wind power cable twisting. Background Technology

[0002] To ensure wind turbines maintain maximum wind energy absorption efficiency, a yaw system is commonly installed to adjust the rotor's orientation. The yaw system monitors wind direction in real time via a weather vane. When the wind direction changes and exceeds a certain threshold, the yaw system drives the nacelle to rotate the rotor until it faces the wind directly, maximizing wind energy capture and improving power generation efficiency. During yaw system operation, the connecting cables twist, accompanied by swaying and collisions. To protect the cables and reduce wear, limiting protection mechanisms are commonly installed in the middle and around the cables to reduce friction. However, significant friction still exists between the cables and these limiting protection mechanisms. Utility Model Content

[0003] To address the problem of significant friction in existing wind turbine torsion cables during yaw, this invention provides a limit protection mechanism for wind turbine torsion cables that solves the aforementioned problem.

[0004] A limit protection mechanism for wind turbine cable twisting includes a support assembly, a bearing, an end seat, a slide bar, a mounting base, a mounting frame, and cable clamps. Two support assemblies are vertically aligned inside the tower, and each has a bearing installed in its cable twisting hole. The bearing has an annular end seat on its inner ring. Multiple slide bars are vertically arranged between the upper and lower end seats. The annular mounting base is parallel to the two end seats and is penetrated by all the slide bars. The mounting frame is installed inside the mounting base and multiple cable clamps are fixed thereon.

[0005] In a preferred embodiment of the wind power cable torsion limit protection mechanism provided by this utility model, the bearing is a multi-lobed sliding bearing, with a flange on the outer side of the outer ring connected to the support assembly, and the outer side of the inner ring having a C-shaped structure that engages with the inner side of the outer ring.

[0006] In a preferred embodiment of the wind power cable torsion limit protection mechanism provided by this utility model, the end seat is a multi-lobed annular structure, and bolts are arranged radially to fix it to the inner ring of the bearing; the end seat has through holes of the same number as the slide rods for the slide rods to pass through, and a nut is provided on the side away from the mounting base to lock the slide rods.

[0007] In a preferred embodiment of the wind power cable twisting limit protection mechanism provided by this utility model, the mounting base is a multi-lobed annular structure with through holes of the same number as the sliding rods and a sliding sleeve therein, the sliding sleeve being connected to the sliding rods.

[0008] The mounting frame includes one or more concentric mounting rings, each a multi-lobed annular structure. Multiple support arms connect adjacent mounting rings, and the outermost mounting ring is radially bolted to the mounting base. Each support arm is an I-shaped structure with arc-shaped plates at both ends, which are attached to and bolted to adjacent mounting rings. The middle arm is a flat plate, and cable clamps are provided on both sides.

[0009] In a preferred embodiment of the wind power cable twisting limit protection mechanism provided by this utility model, the mounting frame includes three layers of mounting rings, with three support arms between the inner middle layer of mounting rings and nine support arms between the middle and outer layers of mounting rings.

[0010] Compared with existing technologies, the wind power cable torsion limit protection mechanism provided by this utility model has the following advantages:

[0011] 1. The solution provided by this utility model has both rotational and vertical travel. By fixing the twisted cable with a cable clamp, it reduces friction between cables and between the cable and the limit protection mechanism, while adapting to changes in the position of the twisted cable during use.

[0012] 2. The solution provided by this utility model adopts a multi-layer ring structure layout, and all of them adopt a modular structure, which is easy to install and arrange, and also convenient for later maintenance. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the limit protection mechanism for wind power cable twisting;

[0014] Figure 2 This is a schematic diagram of the structure of the wind turbine cable twisting protection mechanism after the support components have been removed;

[0015] Figure 3 This is a structural diagram of the mounting bracket.

[0016] The following components are labeled in the diagram: support assembly 1, sliding bearing 2, flange 21, end seat 3, nut 31, slide rod 4, mounting base 5, sliding sleeve 51, mounting bracket 6, mounting ring 61, support arm 62, cable clamp 7. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0018] Please also refer to Figures 1 to 3These are, respectively, a structural schematic diagram of the wind turbine cable twisting limit protection mechanism provided by this utility model, a structural schematic diagram of the wind turbine cable twisting limit protection mechanism after removing the support components, and a structural schematic diagram of the mounting frame. To clearly demonstrate the equipment structure, in... Figure 1 and Figure 2 The structure of the mounting bracket is shown in a simplified manner.

[0019] The limit protection mechanism for wind turbine cable twisting includes a support assembly 1, a sliding bearing 2, an end seat 3, a slide rod 4, a mounting base 5, a mounting frame 6, and a cable clamp 7.

[0020] Support assembly 1 has the same structure as similar products in the prior art, so it will not be described in detail. Two support assemblies 1 are installed vertically aligned inside the tower, with both ends fixedly connected to the inner wall of the tower. Sliding bearings 2 are installed in the cable twisting holes between the two support assemblies 1.

[0021] The sliding bearing 2 is a multi-lobed sliding bearing. The outer ring has a flange 21 connected to the support assembly 1, and the outer ring has a C-shaped structure that engages with the inner ring. That is, the inner ring can slide relative to the inner side in the circumferential direction, and can also bear the force in the vertical direction.

[0022] The inner ring of the sliding bearing 2 is provided with an annular end seat 3. The end seat 3 is a multi-lobed annular structure, and bolts are driven into it radially to fix it to the inner ring of the sliding bearing 2. There are six through holes along the end seat 3 for inserting six sliding rods 4, and nuts 31 are provided at the upper and lower ends that are far apart from each other. The nuts 31 are screwed in towards each other and abut against the end seat 3 to fix the sliding rods 4.

[0023] A ring-shaped mounting base 5 is provided parallel to the two end seats 3. The mounting base 5 also has a multi-lobed ring structure with six through holes along its length. The positions of the through holes are the same as those on the end seats 3, and a sliding sleeve 51 is provided in each of the through holes to connect with six sliding rods 4. Before installing the sliding rods 4, the mounting base 5 is inserted first, allowing them to slide up and down between the two end seats 3.

[0024] Mounting bracket 6 includes three concentrically arranged mounting rings 61, with multiple support arms 62 connecting adjacent mounting rings 61. The inner mounting ring 61 has the smallest diameter, and three support arms 62 are radially mounted on its outer side. The support arm 62 has an I-shaped structure, with an arc-shaped plate at one end that fits against the outer side of the inner mounting ring 61 and is fixed with screws driven in radially. The other end has an arc-shaped plate that fits against the inner side of the middle mounting ring 61 and is fixed with screws driven in radially. The middle section is a flat plate, with a cable clamp 7 on each side. Screws penetrating the flat plate are used between the two cable clamps 7 to lock them together, thus fixing them to the support arm 62.

[0025] The diameters of the middle mounting ring 61 and the outer mounting ring 61 increase sequentially, and both are multi-lobed annular structures. Nine support arms 62 are radially mounted on the outer side of the middle mounting ring 61. The structure of the support arms 62 and the cable clamps 3 used for their installation are the same as described above, and will not be repeated here. Bolts are driven into the outer mounting ring 61 radially to secure it to the mounting base 5.

[0026] The middle and outer mounting rings 61 preferably adopt a three-lobed structure, with ear plates connecting adjacent lobes and fixed with bolts. The mounting base 5 and end seat 3 preferably adopt a two-lobed structure, with ear plates connecting adjacent lobes and fixed with bolts. The sliding bearing 2 preferably adopts a four-lobed structure, with pins connecting adjacent lobes at the end faces.

[0027] In use, first set up the support assembly 1, sliding bearing 2, end seat 3, slide rod 4, and mounting base 5. Then, set up the mounting ring 61 and support arm 62 in order from the inside out. While setting up the mounting ring 61 and support arm 62, divide the position of each twisted cable. Finally, set up the cable clamp 7 to clamp and fix each twisted cable, and then install the whole assembly onto the support arm 62.

[0028] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made using the content of this utility model specification, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A limit protection mechanism for wind turbine cable twisting, comprising a support assembly, characterized in that: It also includes bearings, end seats, slide rods, mounting bases, mounting frames, and cable clamps. The two support components are aligned vertically inside the tower, and each has a bearing in its cable twisting hole. The inner ring of the bearing has an annular end seat. Multiple slide rods are vertically arranged between the upper and lower end seats. The annular mounting base is arranged parallel between the two end seats and is penetrated by all the slide rods. The mounting frame is provided inside the mounting base and multiple cable clamps are fixed thereon.

2. The limit protection mechanism for wind power cable twisting according to claim 1, characterized in that: The bearing is a multi-lobed sliding bearing with a flange on the outer side of the outer ring connected to the support assembly, and a C-shaped structure on the outer side of the inner ring that engages with the inner side of the outer ring.

3. The limit protection mechanism for wind power cable twisting according to claim 2, characterized in that: The end seat is a multi-lobed annular structure, with bolts arranged radially to fix it to the inner ring of the bearing; the end seat has through holes of the same number as the slide rod for the slide rod to pass through, and a nut is provided on the side away from the mounting base to lock the slide rod.

4. The limit protection mechanism for wind power cable twisting according to claim 3, characterized in that: The mounting base is a multi-lobed annular structure with through holes of the same number as the sliding rods, and a sliding sleeve is provided in each hole. The sliding sleeve is connected to the sliding rod.

5. The limit protection mechanism for wind power cable twisting according to claim 4, characterized in that: The mounting frame includes one or more concentric mounting rings, each mounting ring being a multi-lobed annular structure. Multiple support arms connect adjacent mounting rings, and the outermost mounting ring is fixedly connected to the mounting base by bolts arranged radially.

6. The wind power cable twisting limit protection mechanism according to claim 5, characterized in that: The support arm has an I-shaped structure with arc plates at both ends, which are attached to the adjacent mounting ring and bolted together. The middle part is a flat plate, and the cable clamps are provided on both sides.

7. The limit protection mechanism for wind power cable twisting according to claim 6, characterized in that: The mounting frame includes three layers of mounting rings, with three support arms between the inner and middle layers of mounting rings, and nine support arms between the middle and outer layers of mounting rings.

Images