Connecting device for wind power tower drum and cable

Abstract

The invention relates to the technical field of wind power generation equipment, in particular to a wind power tower tube and cable connecting device which comprises a mounting ring fixedly arranged in a tower tube, a plurality of clamping jaw units are arranged on the mounting ring, and each clamping jaw unit comprises a first clamping jaw and a second clamping jaw. A mounting seat matched with the first clamping jaw and the second clamping jaw is fixedly arranged on the inner wall of the mounting ring, a mounting plate is arranged between the first clamping jaw and the second clamping jaw, a third clamping jaw is arranged on the mounting plate, and a guide frame matched with the mounting plate is fixedly arranged on the inner wall of the mounting ring; a driving structure in power connection with the mounting plate is arranged on the guide frame, the mounting plate and the second clamping jaw are driven to move by rotating the hand wheel, so that a cable is clamped, fixed and unfixed, the first clamping jaw and the second clamping jaw are both arranged on the mounting ring, the first clamping jaw and the second clamping jaw are more attached to the inner wall of a tower drum, and space is saved.

Description

Technical Field

[0001] The present invention relates to the technical field of wind power generation equipment, and in particular to a connecting device between a wind power tower and a cable. Background Art

[0002] Wind energy is a type of usable energy provided to humans by the work done by air flow. It is a renewable energy source. The higher the air flow rate, the greater the kinetic energy. People can use windmills to convert the kinetic energy of wind into rotational motion to drive generators to generate electricity. Modern turbine blades are used to convert the mechanical energy of airflow into electrical energy to become generators. In ancient times, windmills were used to collect mechanical energy to grind grains and pump water. The wind turbine tower is the tower pole of wind power generation. It mainly plays a supporting role in the wind turbine generator set and absorbs the vibration of the set.

[0003] The cables of existing wind turbines are usually introduced into the ground along the internal space of the tower to reduce the possibility of cable damage. In order to fix the cables at the same time, a fixed connection device is set inside some wind turbine towers to clamp and fix the cables to prevent the cables from being damaged by friction with the inner wall of the tower, and also to prevent the cables from being entangled with each other. For example, Chinese patent announcement No. CN220368404U discloses "a cable fixing device in a wind turbine tower", which drives a bidirectional screw to rotate by a motor so that two slides approach each other in the horizontal direction. The side walls of the two slides are symmetrically fixed to multiple support blocks, and a groove is provided on the side wall of each support block. The clamping half ring is elastically connected in the groove by a first spring. When the slides approach each other, the cables are clamped and fixed by two clamping half rings on the same plane, so that multiple cables can be clamped and fixed at one time.

[0004] However, in actual use, since many wind turbines are installed in remote areas and power supply is inconvenient, the use of motor control to clamp and fix the cables has limitations. At the same time, due to the high location, it is inconvenient to power the motor, and the clamping part occupies a large space, resulting in the space for climbing in the tower being compressed, affecting the maintenance personnel's climbing and maintenance. Summary of the Invention

[0005] The purpose of the present invention is to solve the shortcomings of the prior art, such as the limitations of cable clamping and fixing, the large space occupied, and the compression of the space used for climbing in the tower, and to propose a connection device between a wind turbine tower and a cable.

[0006] In order to achieve the above object, the present invention adopts the following technical solutions:

[0007] A connecting device for a wind turbine tower and a cable is designed, comprising a mounting ring fixedly arranged in the tower, a plurality of clamping units being arranged on the mounting ring, the clamping units comprising a first clamping jaw and a second clamping jaw, a mounting seat being fixedly arranged on the inner wall of the mounting ring and cooperating with the first clamping jaw and the second clamping jaw, a mounting plate being arranged between the first clamping jaw and the second clamping jaw, a third clamping jaw being arranged on the mounting plate, a guide frame being fixedly arranged on the inner wall of the mounting ring and a drive structure being dynamically connected to the mounting plate.

[0008] Furthermore, a limiting structure is provided between the mounting seat and the first clamping jaw and the second clamping jaw.

[0009] Furthermore, the driving structure includes a first bevel gear rotatably arranged on the guide frame, and a first rack meshingly connected to the first bevel gear is fixedly arranged on the mounting plate.

[0010] Furthermore, a transmission shaft is fixedly provided on one side of the first bevel gear, and the transmission shaft passes through the guide frame and is fixedly connected to a handwheel.

[0011] Furthermore, a slot is provided on the mounting seat, and an insert block matching the slot is fixedly provided on the first clamping jaw and the second clamping jaw.

[0012] Furthermore, the limiting structure includes a guide groove provided on the mounting seat, a positioning bolt is provided in the guide groove, and the positioning bolt is threadedly connected to the insert block.

[0013] Furthermore, a tension spring is provided in the guide groove, and the other end of the tension spring is connected to the insertion block.

[0014] Furthermore, a linkage groove is provided at the lower end of the guide groove, and a second rack matched with the linkage groove is fixedly provided on the inserting block.

[0015] Furthermore, a second bevel gear meshing with the second rack is rotatably provided in the linkage groove, and a tooth groove meshing with the second bevel gear is provided on the mounting plate.

[0016] Furthermore, the first clamping jaw, the second clamping jaw and the third clamping jaw are all arc-shaped structures, and rubber pads are fixedly provided on the inner walls of the first clamping jaw, the second clamping jaw and the third clamping jaw.

[0017] The invention provides a device for connecting a wind turbine tower and a cable, which has the following beneficial effects:

[0018] In the present invention, the mounting plate and the second clamping jaw are driven to move by rotating the hand wheel, thereby clamping and fixing the cable and releasing the cable, which facilitates the installation of the wind turbine in an area without electricity and improves the scope of application. By arranging both the first clamping jaw and the second clamping jaw on the mounting ring, the first clamping jaw and the second clamping jaw are more closely fitted to the inner wall of the tower, saving space, facilitating the installation of the climbing frame and facilitating the passage of maintenance personnel.

[0019] Secondly, in the present invention, when the hand wheel is rotated to drive the mounting plate to move, the mounting plate drives the first clamping jaw and the second clamping jaw to move under the action of the second bevel gear, thereby causing the first clamping jaw and the second clamping jaw to move in the opposite direction to the third clamping jaw, increasing the distance between the first clamping jaw and the second clamping jaw and the third clamping jaw, thereby facilitating the installation of the cable. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a structural schematic diagram of a connection device between a wind turbine tower and a cable proposed by the present invention;

[0021] Figure 2 Schematic diagram of the structure of the third clamping jaw of the present invention;

[0022] Figure 3 This is a schematic diagram of the enlarged structure of area A of the present invention;

[0023] Figure 4 Schematic diagram of the structure of the first rack of the present invention;

[0024] Figure 5 It is a structural schematic diagram of the mounting plate of the present invention;

[0025] Figure 6 This is a schematic diagram of the enlarged structure of region B of the present invention.

[0026] In the figure: 1. Mounting ring; 2. Clamping jaw unit; 21. First clamping jaw; 22. Second clamping jaw; 23. Mounting seat; 24. Third clamping jaw; 25. Insert block; 26. Positioning bolt; 27. Tension spring; 28. Second rack; 29. Second bevel gear; 3. Mounting plate; 4. Guide frame; 5. Drive structure; 51. First bevel gear; 52. First rack; 53. Transmission shaft; 6. Limiting structure. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0028] Reference Figure 1-6A connecting device for a wind turbine tower and a cable includes a mounting ring 1 fixedly arranged in the tower, a plurality of clamping units 2 are arranged on the mounting ring 1, the clamping unit 2 includes a first clamping jaw 21 and a second clamping jaw 22, a mounting seat 23 matched with the first clamping jaw 21 and the second clamping jaw 22 is fixedly arranged on the inner wall of the mounting ring 1, a mounting plate 3 is arranged between the first clamping jaw 21 and the second clamping jaw 22, a third clamping jaw 24 is arranged on the mounting plate, a guide frame 4 matched with the mounting plate 3 is fixedly arranged on the inner wall of the mounting ring 1, and a driving structure 5 dynamically connected to the mounting plate 3 is provided on the guide frame 4.

[0029] In the present invention, a clamping unit composed of a first clamping jaw 21, a second clamping jaw 22 and a third clamping jaw 24 is used to clamp and fix the cable to prevent the cable from falling off. At the same time, a driving structure is used to control the position of the mounting plate 3 and the third clamping jaw 24. The third clamping jaw 24 can be moved when installing or replacing the cable, reducing the difficulty of installation and replacement.

[0030] Furthermore, in this embodiment, a limiting structure 6 is provided between the mounting base 23 and the first clamping jaw 21 and the second clamping jaw 22, and the limiting structure 6 is used to limit and fix the first clamping jaw 21 and the second clamping jaw 22 to prevent the first clamping jaw 21 and the second clamping jaw 22 from moving when clamping and fixing the cable, resulting in fixation failure.

[0031] Furthermore, in this embodiment, the driving structure 5 includes a first bevel gear 51 rotatably arranged on the guide frame 4, and a first rack 52 is fixedly arranged on the mounting plate 3 and is meshed with the first bevel gear 51. The first rack 52 is an arc-shaped structure and is provided with teeth meshing with the first bevel gear 51, similar to two bevel gears meshing with each other.

[0032] In this embodiment, a transmission shaft 53 is fixedly provided on one side of the first bevel gear 51. The transmission shaft 53 passes through the guide frame 4 and is fixedly connected to a handwheel. In some embodiments, a torsion spring is provided between the transmission shaft 53 and the guide frame 4 for resetting the first bevel gear 51, and then resetting the mounting plate 3 and the third clamping jaw 24, to ensure that the third clamping jaw 24 abuts against the cable to fix the cable.

[0033] It should be noted that, in this embodiment, a slot is provided on the mounting seat 23, and an insert block 25 that matches the slot is fixedly provided on the first clamping jaw 21 and the second clamping jaw 22. The slot is a T-slot or a dovetail slot, and the insert block 25 is a corresponding T-block or dovetail block, which guides and fixes the first clamping jaw 21 and the second clamping jaw 22 at the same time to prevent the first clamping jaw 21 and the second clamping jaw 22 from separating and falling off from the mounting seat 23.

[0034] In this embodiment, the limiting structure 6 includes a guide groove opened on the mounting seat 23, and a positioning bolt 26 is provided in the guide groove. The positioning bolt 26 is threadedly connected to the insert block 25. When the first clamping jaw 21 and the second clamping jaw 22 reach the appropriate position, the positioning bolt 26 is rotated so that its nut abuts against the mounting seat 23, thereby fixing the insert block 25 and fixing the position of the first clamping jaw 21 and the second clamping jaw 22.

[0035] In addition, in some embodiments, a tension spring 27 is provided in the guide groove, and the other end of the tension spring 27 is connected to the plug block 25. By providing the tension spring 27, force is applied to the plug block 25, and then force is applied to the first clamping jaw 21 and the second clamping jaw 22, so that the first clamping jaw 21 and the second clamping jaw 22 are tightly in contact with the cable to fix the cable.

[0036] In detail, in this embodiment, a linkage groove is opened at the lower end of the guide groove, and a second rack 28 that cooperates with the linkage groove is fixedly provided on the plug block 25. When the second rack 28 moves, the plug block 25 is driven to move. The guide groove and the plug block 25 are both arc-shaped structures, and the second rack 28 is also an arc-shaped structure.

[0037] In this embodiment, a second bevel gear 29 meshing with the second rack 28 is rotatably provided in the linkage groove, and a tooth groove meshing with the second bevel gear 29 is provided on the mounting plate 3. That is, when the mounting plate 3 moves, the first clamping jaw 21 and the second clamping jaw 22 will be driven to move in the opposite direction, thereby increasing the distance between the first clamping jaw 21 and the second clamping jaw 22 and the third clamping jaw 24, making it easier to install the cable.

[0038] More specifically, in some embodiments, the first clamping jaw 21 , the second clamping jaw 22 , and the third clamping jaw 24 are all arc-shaped structures, and rubber pads are fixedly provided on the inner walls of the first clamping jaw 21 , the second clamping jaw 22 , and the third clamping jaw 24 to increase friction.

[0039] Working method: When working, the first bevel gear 51 is driven to rotate by rotating the handwheel, and the first rack 52 and the mounting plate 3 are driven to move by the first bevel gear 51, and the third clamping jaw moves accordingly. At the same time, the second bevel gear 29 rotates, driving the plug block 25 to move, driving the first clamping jaw 21 and the second clamping jaw 22 to move in the opposite direction, thereby increasing the distance between the first clamping jaw 21 and the second clamping jaw 22 and the third clamping jaw 24, and fixing the plug block 25 through the limiting structure 6 to facilitate the installation of the cable. After the cable is installed, the limiting structure 6 is cancelled, and the tension spring 27 applies force to the plug block 25, thereby moving the first clamping jaw 21 and the second clamping jaw 22, so that the first clamping jaw 21 and the second clamping jaw 22 are tightly in contact with the cable to fix the cable. At the same time, the mounting plate 3 and the third clamping jaw 24 move under the action of the second bevel gear 29 to clamp and fix the cable.

[0040] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A device for connecting a wind turbine tower and a cable, comprising a mounting ring (1) fixedly arranged in the tower, characterized in that: A plurality of clamping units (2) are provided on the mounting ring (1), and the clamping units (2) include a first clamping jaw (21) and a second clamping jaw (22). A mounting seat (23) matching with the first clamping jaw (21) and the second clamping jaw (22) is fixedly provided on the inner wall of the mounting ring (1), a mounting plate (3) is provided between the first clamping jaw (21) and the second clamping jaw (22), a third clamping jaw (24) is provided on the mounting plate, a guide frame (4) matching with the mounting plate (3) is fixedly provided on the inner wall of the mounting ring (1), and a driving structure (5) connected to the mounting plate (3) in a dynamic manner is provided on the guide frame (4).

2. The device for connecting a wind turbine tower and a cable according to claim 1, characterized in that: A limiting structure (6) is provided between the mounting seat (23) and the first clamping jaw (21) and the second clamping jaw (22).

3. The device for connecting a wind turbine tower and a cable according to claim 1, characterized in that: The driving structure (5) comprises a first bevel gear (51) rotatably arranged on the guide frame (4), and a first rack (52) meshingly connected with the first bevel gear (51) is fixedly arranged on the mounting plate (3).

4. The device for connecting a wind turbine tower and a cable according to claim 3, characterized in that: A transmission shaft (53) is fixedly provided on one side of the first bevel gear (51), and the transmission shaft (53) passes through the guide frame (4) and is fixedly connected to a hand wheel.

5. The device for connecting a wind turbine tower and a cable according to claim 1, characterized in that: A slot is provided on the mounting seat (23), and an inserting block (25) matching the slot is fixedly provided on the first clamping jaw (21) and the second clamping jaw (22).

6. The device for connecting a wind turbine tower and a cable according to claim 5, characterized in that: The limiting structure (6) includes a guide groove provided on the mounting seat (23), a positioning bolt (26) is provided in the guide groove, and the positioning bolt (26) is threadedly connected to the insert block (25).

7. The device for connecting a wind turbine tower and a cable according to claim 6, characterized in that: A tension spring (27) is provided in the guide groove, and the other end of the tension spring (27) is connected to the inserting block (25).

8. The device for connecting a wind turbine tower and a cable according to claim 7, characterized in that: A linkage groove is provided at the lower end of the guide groove, and a second rack (28) matched with the linkage groove is fixedly provided on the inserting block (25).

9. The device for connecting a wind turbine tower and a cable according to claim 8, characterized in that: A second bevel gear (29) meshingly connected to the second rack (28) is rotatably arranged in the linkage groove, and a tooth groove meshingly connected to the second bevel gear (29) is provided on the mounting plate (3).

10. The device for connecting a wind turbine tower and a cable according to claim 1, characterized in that: The first clamping jaw (21), the second clamping jaw (22) and the third clamping jaw (24) are all arc-shaped structures, and the inner walls of the first clamping jaw (21), the second clamping jaw (22) and the third clamping jaw (24) are all fixedly provided with rubber pads.

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