Wind power cable anti-wear protection equipment

Abstract

The invention belongs to the technical field of cable protection, and discloses wind power cable anti-wear protection equipment, which comprises a connecting frame, a fixing mechanism mounted in the connecting frame, a cable main body movably connected in the connecting frame, a buffer guide mechanism rotatably connected in the connecting frame, and a protection mechanism mounted in the connecting frame. Through cooperation of the guide wheels, the buffer arc sheets, the first buffer springs and other structures, the device can guide a cable to advance and buffer vibration, frictional wear between the cable and equipment is reduced, the four sets of symmetrically distributed guide wheels make contact with a cable body, sliding friction is converted into rolling friction, the wear probability is reduced, and when the cable extrudes the buffer arc sheets, the service life of the cable is prolonged. The first buffer springs in the annular array absorb vibration energy through elastic deformation, the toughness of the buffer arc sheets is matched with the reset force of the springs, the extrusion stress of the cable is quickly counteracted, the cable sheath is prevented from being damaged by rigid contact, and finally the purposes of guiding the trend of the cable and improving the vibration buffer effect are achieved.

Description

Technical Field

[0001] This invention belongs to the field of cable protection technology, specifically a wind power cable anti-wear protection device. Background Technology

[0002] The cables inside the wind turbine tower and nacelle need to connect to various electrical equipment. The laying path needs to pass through multiple areas such as partitions, cable trays, and equipment interfaces. They are also exposed to complex conditions such as wind turbine vibration, salt spray, and temperature changes for a long time. Existing protection methods mostly rely on single bushings, fireproof putty, or conventional clamps, which have significant defects. First, the cables slide against the partitions, supports, and other structural components. The high-frequency vibration of the wind turbine aggravates the wear of the sheath, which can easily lead to safety hazards such as insulation damage and short circuits. Second, the fixed structure lacks a buffer and vibration reduction design. Vibration causes the cables to shift and collide, further aggravating the wear problem. Third, when the cables pass through the rotating interface, there is no dedicated guiding and protective structure. The cables are prone to entanglement and twisting, causing the sheath to tear. As the capacity of a single wind turbine increases, the cross-section of the cables increases and the number of cables increases. The risk of wear increases exponentially, which not only increases the cost of operation and maintenance replacement, but may also lead to downtime accidents due to cable failures.

[0003] CN215333264U discloses a cable anti-wear device inside a wind turbine tower, including a clamping mechanism and a sliding mechanism. The clamping mechanism is used to clamp the cable. The sliding mechanism includes a guide rod and a sliding member. The guide rod is fixed to the wind turbine tower and extends along the length of the wind turbine tower. The sliding member is slidably sleeved on the guide rod and is fixedly connected to the clamping mechanism. The beneficial effect of the proposed technical solution is that by clamping the cable with the clamping mechanism, when the cable moves up and down, the clamping mechanism moves up and down with the cable. The clamping mechanism drives the sliding member to move up and down along the guide rod. Therefore, when the cable moves up and down, there is no relative movement between the cable and the clamping mechanism, which can prevent the cable from being worn out and improve the safety of the wind turbine generator.

[0004] The device clamps the cable using a clamping mechanism, which prevents the cable from being worn out and improves the safety of the wind turbine. However, the device cannot protect the cable from wear when it passes through the partition between two areas. Therefore, a wind power cable wear protection device is proposed, which can protect the cable from wear in the partition between two areas and provide buffer protection for the cable's travel path. Summary of the Invention

[0005] To address the problems mentioned in the background section, this invention provides a wind power cable abrasion protection device.

[0006] To achieve the above objectives, the present invention provides the following technical solution: a wind power cable anti-wear protection device, comprising a connecting frame, a fixing mechanism installed inside the connecting frame, a cable body movably connected inside the connecting frame, a buffer guide mechanism rotatably connected inside the connecting frame, and a protective mechanism installed inside the connecting frame; The fixing mechanism includes a bidirectional screw, a first limiting plate, and a first limiting post. The bidirectional screw is rotatably connected inside the connecting frame, and the first limiting plate is threadedly connected to the outside of the bidirectional screw. The first limiting post is fixed to the outside of the first limiting plate. The buffer guide mechanism includes a guide wheel, a buffer arc plate, and a first buffer spring. The guide wheel is rotatably connected inside the connecting frame. A buffer arc plate is fixed inside the guide wheel, and a first buffer spring is fixed at the bottom end of the buffer arc plate. The protective mechanism includes a first electromagnet, a connecting rod, and a piston. The first electromagnet is fixed inside the connecting frame, the connecting rod is slidably connected inside the connecting frame, and the piston is fixed outside the connecting rod.

[0007] Preferably, the bidirectional screw is externally threaded with a second limiting plate, and a second limiting post is fixed to the outside of the second limiting plate. Several groups of bidirectional screws are provided, and the bidirectional screws are distributed in an array.

[0008] Preferably, the first limiting plate and the second limiting plate are symmetrically distributed about the central axis of the bidirectional screw, and two sets of the first limiting posts are provided, which are symmetrically distributed about the first limiting plate.

[0009] Preferably, four sets of guide wheels are provided, and the guide wheels are symmetrically distributed about the central axis of the connecting frame. Several sets of buffer arc plates are provided, and the buffer arc plates are arrayed about the central axis of the guide wheels.

[0010] Preferably, the first buffer spring is provided in several groups, and the first buffer spring is distributed in a circular array. The first buffer spring is used to compress the buffer arc plate.

[0011] Preferably, a second electromagnet is fixed to the outside of the piston, a buffer plate is fixed to the outside of the connecting rod, a second buffer spring is sleeved on the outside of the connecting rod, and a ball bearing is rotatably connected inside the buffer plate.

[0012] Preferably, the first electromagnet is provided in several groups, and the first electromagnet is symmetrically distributed about the central axis of the connecting frame. The outer wall of the connecting rod is attached to the inner wall of the connecting frame, the outer wall of the piston is attached to the inner wall of the connecting frame, and the piston is slidably connected to the connecting frame.

[0013] Preferably, the first electromagnet and the second electromagnet are attracted by each other, the buffer plate is provided in four sets, the buffer plate is symmetrically distributed about the central axis of the connecting frame, and the inner wall of the buffer plate is provided with a guide groove.

[0014] Preferably, four sets of connecting rods are provided, and the connecting rods are symmetrically distributed about the central axis of the buffer plate. One end of the second buffer spring is fixed to a connecting frame, and the other end of the second buffer spring is fixed to a buffer plate.

[0015] Preferably, the second buffer spring is used to pull the buffer plate, and the ball bearings are arranged in several groups at equal intervals.

[0016] Compared with the prior art, the beneficial effects of the present invention are as follows: This invention, through the combination of guide wheels, buffer arc plates, and a first buffer spring, enables the device to guide the cable and buffer vibration, reducing friction and wear between the cable and the equipment. Four sets of symmetrically distributed guide wheels contact the cable body, converting sliding friction into rolling friction and reducing the probability of wear. When the cable squeezes the buffer arc plates, the first buffer spring in the ring array absorbs vibration energy through elastic deformation. The toughness of the buffer arc plates, combined with the spring's restoring force, quickly offsets the cable's compressive stress, avoiding rigid contact damage to the cable sheath. Ultimately, this achieves the purpose of guiding the cable's path and improving the vibration buffering effect.

[0017] This invention, through the coordinated arrangement of a first electromagnet, a connecting rod, a piston, and other structures, enables the device to adapt to cable vibration and displacement, further enhancing wear protection. The first and second electromagnets are magnetically attracted, and together with the second buffer spring, they pull the buffer plate, ensuring that the buffer plate always fits against the cable body. When the cable vibrates and shifts, the connecting rod drives the piston to slide along the connecting frame. The ball bearings inside the buffer plate reduce friction with the cable. The multiple buffer structures offset the vibration impact force, ultimately achieving the effect of adapting to cable displacement and reducing the risk of wear.

[0018] This invention, through the combination of a bidirectional screw, a first limiting plate, and a first limiting post, enables the device to be securely fixed to the wind turbine tower diaphragm, adapting to the installation requirements of diaphragms of different thicknesses. The rotating array of bidirectional screws drives the symmetrically distributed first and second limiting plates to move in opposite directions, causing the first and second limiting posts to clamp the two sides of the diaphragm. No additional drilling is required for fixing, avoiding damage to the diaphragm structure. The two sets of first limiting posts are symmetrically distributed, enhancing clamping stability and preventing the device from shifting due to wind turbine vibration. Ultimately, this achieves the effect of rapid adaptation and installation, ensuring the reliability of equipment fixation. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the overall installation state of the partition plate of the present invention; Figure 2This is a schematic diagram of the overall structure of the present invention; Figure 3 This is a schematic diagram of the fixing mechanism structure of the present invention; Figure 4 This is a schematic diagram of the overall half-sectional structure of the present invention; Figure 5 This is a schematic diagram of the overall cross-sectional cable line structure of the present invention; Figure 6 This is a schematic diagram of the buffer guide mechanism of the present invention; Figure 7 This is a schematic cross-sectional view of the protective mechanism of the present invention; Figure 8 This is a schematic diagram of the protective mechanism structure of the present invention.

[0020] In the diagram: 1. Connecting frame; 2. Fixing mechanism; 201. Bidirectional screw; 202. First limiting plate; 203. First limiting post; 204. Second limiting plate; 205. Second limiting post; 3. Cable body; 4. Buffer guide mechanism; 401. Guide wheel; 402. Buffer arc plate; 403. First buffer spring; 5. Protective mechanism; 501. First electromagnet; 502. Connecting rod; 503. Piston; 504. Second electromagnet; 505. Buffer plate; 506. Second buffer spring; 507. Ball bearing. Detailed Implementation

[0021] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0022] like Figures 1 to 8 As shown, the present invention provides a wind power cable anti-wear protection device, including a connecting frame 1, a fixing mechanism 2 installed inside the connecting frame 1, a cable body 3 movably connected inside the connecting frame 1, a buffer guide mechanism 4 rotatably connected inside the connecting frame 1, and a protective mechanism 5 installed inside the connecting frame 1.

[0023] The above solution is adopted: by fixing the connecting frame 1 to the partition inside the wind power tower, and passing the cable body 3 through the connecting frame 1 at that location for abrasion protection, it is avoided that the cable body 3 is damaged due to direct contact with the outer edge of the partition opening.

[0024] like Figures 1 to 3As shown, the fixing mechanism 2 includes a bidirectional screw 201, a first limiting plate 202, and a first limiting post 203. The bidirectional screw 201 is rotatably connected to the inside of the connecting frame 1. The first limiting plate 202 is threadedly connected to the outside of the bidirectional screw 201. The first limiting post 203 is fixed to the outside of the first limiting plate 202. The second limiting plate 204 is threadedly connected to the outside of the bidirectional screw 201. The second limiting post 205 is fixed to the outside of the second limiting plate 204. Several sets of bidirectional screws 201 are provided, and the bidirectional screws 201 are distributed in an array. The first limiting plate 202 and the second limiting plate 204 are symmetrically distributed about the central axis of the bidirectional screw 201. Two sets of first limiting posts 203 are provided, and the first limiting posts 203 are symmetrically distributed about the first limiting plate 202.

[0025] The above solution is adopted: by setting the connecting frame 1 at the splicing point of the partition, and by rotating multiple sets of bidirectional screws 201, the bidirectional screws 201 drive the first limiting plate 202 and the second limiting plate 204 to move in opposite directions, thereby driving the first limiting post 203 and the second limiting post 205 to move in opposite directions.

[0026] like Figures 1 to 6 As shown, the buffer guide mechanism 4 includes a guide wheel 401, a buffer arc plate 402, and a first buffer spring 403. The guide wheel 401 is rotatably connected inside the connecting frame 1. The buffer arc plate 402 is fixed inside the guide wheel 401. The first buffer spring 403 is fixed at the bottom end of the buffer arc plate 402. There are four sets of guide wheels 401, which are symmetrically distributed about the central axis of the connecting frame 1. There are several sets of buffer arc plates 402, which are arrayed about the central axis of the guide wheels 401. There are several sets of first buffer springs 403, which are arranged in a ring array. The first buffer springs 403 are used to compress the buffer arc plate 402.

[0027] The above scheme is adopted: after the cable body 3 passes through the connecting frame 1 and then through the partition, the edge of the cable body 3 contacts the guide wheel 401 and the buffer arc plate 402. When the guide wheel 401 and the buffer arc plate 402 contact the cable body 3, the rotation of the guide wheel 401 protects and guides the cable body 3. The buffer arc plate 402 has toughness, and the first buffer spring 403 can squeeze the buffer arc plate 402 to reset the buffer arc plate 402. This allows the buffer arc plate 402 to quickly reset after being squeezed by the cable body 3.

[0028] like Figures 1 to 8As shown, the protective mechanism 5 includes a first electromagnet 501, a connecting rod 502, and a piston 503. The first electromagnet 501 is fixed inside the connecting frame 1. The connecting rod 502 is slidably connected inside the connecting frame 1. The piston 503 is fixed outside the connecting rod 502. Several sets of first electromagnets 501 are provided. The first electromagnets 501 are symmetrically distributed about the central axis of the connecting frame 1. The outer wall of the connecting rod 502 is attached to the inner wall of the connecting frame 1. The outer wall of the piston 503 is attached to the inner wall of the connecting frame 1. The piston 503 is slidably connected to the connecting frame 1.

[0029] like Figures 1 to 8 As shown, a second electromagnet 504 is fixed to the outside of the piston 503, and a buffer plate 505 is fixed to the outside of the connecting rod 502. The first electromagnet 501 and the second electromagnet 504 are attracted by magnetic force. There are four sets of buffer plates 505, which are symmetrically distributed about the central axis of the connecting frame 1. The inner wall of the buffer plate 505 is provided with a guide groove. There are four sets of connecting rods 502, which are symmetrically distributed about the central axis of the buffer plate 505. One end of the second buffer spring 506 is fixed to the connecting frame 1, and the other end of the second buffer spring 506 is fixed to the buffer plate 505. The second buffer spring 506 is sleeved on the outside of the connecting rod 502. A ball bearing 507 is rotatably connected inside the buffer plate 505. The second buffer spring 506 is used to pull the buffer plate 505. There are several sets of ball bearings 507, which are arranged at equal intervals.

[0030] The above solution is adopted: by sliding the connecting rod 502, piston 503 and buffer plate 505 in the guide groove of the connecting frame 1, and the guide groove of the buffer plate 505 matches the guide groove of the connecting frame 1, the cable body 3 can pass through the two sets of guide grooves, and the second buffer spring 506 pulls the buffer plate 505 so that the guide groove of the connecting frame 1 and the buffer plate 505 are always in contact with the cable body 3, thereby resisting the fluctuations generated when the cable body 3 vibrates.

[0031] The working principle and usage process of this invention are as follows: First, the connecting frame 1 is fixed to the partition inside the wind power tower, and the cable body 3 is passed through the connecting frame 1 at this location for wear protection, so as to avoid direct contact with the outer edge of the partition opening and damage to the outer edge of the cable body 3. By setting the connecting frame 1 at the splice of the partition, and by rotating multiple sets of bidirectional screws 201, the bidirectional screws 201 drive the first limiting plate 202 and the second limiting plate 204 to move in opposite directions, thereby driving the first limiting post 203 and the second limiting post 205 to move in opposite directions, so that the entire device is fixed at the splice of the partition.

[0032] Secondly, by sliding the connecting rod 502, piston 503 and buffer plate 505 in the guide groove of the connecting frame 1, and the guide groove of the buffer plate 505 matches the guide groove of the connecting frame 1, the cable body 3 can pass through the two sets of guide grooves. The second buffer spring 506 pulls the buffer plate 505, so that the guide groove of the connecting frame 1 and the buffer plate 505 are always in contact with the cable body 3, thereby resisting the fluctuations generated when the cable body 3 vibrates. At the same time, the attraction of the first electromagnet 501 and the second electromagnet 504 further improves the buffering effect, thereby further improving the wear protection effect of the cable body 3.

[0033] Finally, after the cable body 3 passes through the connecting frame 1 and then through the partition, the edge of the cable body 3 contacts the guide wheel 401 and the buffer arc plate 402. When the guide wheel 401 and the buffer arc plate 402 contact the cable body 3, the rotation of the guide wheel 401 provides protective guidance to the cable body 3. The buffer arc plate 402 is resilient, and the first buffer spring 403 can squeeze the buffer arc plate 402 to reset it. This allows the buffer arc plate 402 to quickly reset after being squeezed by the cable body 3. The restoring force of the buffer arc plate 402 and the first buffer spring 403 offsets the squeezing force on the cable body 3, thereby providing shock absorption and anti-wear protection for the cable body 3.

[0034] Furthermore, during the operation of the device, when the cable body 3 experiences axial or radial displacement due to fan vibration, the ball bearings 507 on the inner wall of the buffer plate 505 contact the surface of the cable body 3, converting sliding friction into rolling friction and reducing contact wear. The four sets of buffer plates 505 are symmetrically distributed about the central axis of the connecting frame 1, which can limit the cable body 3 from four directions. Combined with the tension of the second buffer spring 506 and the attraction force of the first electromagnet 501 and the second electromagnet 504, the buffer plate 505 is always in contact with the surface of the cable body 3, avoiding direct collision between the cable and the inner wall of the connecting frame 1. When the cable displacement is large, the connecting rod 502 drives the piston 503 to slide along the inner wall of the connecting frame 1. The contact structure between the piston 503 and the inner wall of the connecting frame 1 can limit the offset of the connecting rod 502, ensuring the stability of the movement trajectory of the buffer plate 505 and further improving the accuracy of the buffer guidance.

[0035] The guide wheels 401 are arranged in four symmetrical groups, corresponding to the entry and exit paths of the cable body 3. When the cable passes through the connecting frame 1, its two side edges simultaneously contact two groups of guide wheels 401, forming bidirectional guidance to avoid cable deviation and aggravation of wear on one side. The buffer arc plates 402 are arranged in an array along the central axis of the guide wheels 401. Each group of buffer arc plates 402 corresponds to a group of first buffer springs 403. When the cable squeezes the buffer arc plates 402, multiple groups of buffer arc plates 402 deform synchronously to disperse the pressure applied by the cable. The first buffer springs 403 absorb vibration energy through elastic contraction. After the cable displacement is restored, the restoring force of the first buffer springs 403 pushes the buffer arc plates 402 back to the initial position to ensure that the buffer guide mechanism 4 continues to function.

[0036] In the fixing mechanism 2, the array of bidirectional screws 201 can rotate synchronously, driving the first limiting plate 202 and the second limiting plate 204 to evenly clamp the partition. The two sets of first limiting posts 203 and second limiting posts 205 respectively contact the two sides of the partition, increasing the contact area and improving the fixing stability. The distribution structure of the first limiting posts 203 and the second limiting posts 205 can avoid excessive pressure on the partition during fixing, preventing the partition from breaking. After the device is installed, the fixing mechanism 2 and the connecting frame 1 form a stable whole, which can resist the high-frequency vibration generated by the fan during operation and prevent the device itself from shifting, causing the cable protection to fail.

[0037] When the cable body 3 expands and contracts due to temperature changes, the synergistic action of the buffer guide mechanism 4 and the protective mechanism 5 can adapt to changes in cable length. When the cable elongates or shortens, the rotation of the guide wheel 401 and the rolling of the ball 507 reduce motion resistance. The elastic adjustment structure of the buffer spring and the electromagnet can compensate for the tension caused by changes in cable length, preventing damage to the sheath caused by cable stretching or compression. During the entire operation, the fixing mechanism 2, the buffer guide mechanism 4, and the protective mechanism 5 form a triple protection. The three work together to achieve comprehensive wear protection for the wind power cable passing through the partition area. It can operate stably for a long time without manual intervention and is suitable for installation scenarios with different specifications of cables and partitions of different thicknesses, reducing the operation and maintenance costs and downtime risks of wind power equipment.

[0038] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0039] Although embodiments of the invention 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 invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A wind power cable wear protection device, comprising a connecting frame (1), characterized in that: The connecting frame (1) is equipped with a fixing mechanism (2), the connecting frame (1) is movably connected to a cable body (3), the connecting frame (1) is rotatably connected to a buffer guide mechanism (4), and the connecting frame (1) is equipped with a protective mechanism (5). The fixing mechanism (2) includes a bidirectional screw (201), a first limiting plate (202) and a first limiting post (203). The bidirectional screw (201) is rotatably connected to the inside of the connecting frame (1). The first limiting plate (202) is threadedly connected to the outside of the bidirectional screw (201). The first limiting post (203) is fixed to the outside of the first limiting plate (202). The buffer guide mechanism (4) includes a guide wheel (401), a buffer arc plate (402) and a first buffer spring (403). The guide wheel (401) is rotatably connected to the inside of the connecting frame (1). The buffer arc plate (402) is fixed inside the guide wheel (401), and the first buffer spring (403) is fixed at the bottom end of the buffer arc plate (402). The protective mechanism (5) includes a first electromagnet (501), a connecting rod (502) and a piston (503). The first electromagnet (501) is fixed inside the connecting frame (1). The connecting rod (502) is slidably connected inside the connecting frame (1). The piston (503) is fixed outside the connecting rod (502).

2. The wind power cable anti-wear protection device according to claim 1, characterized in that: The external thread of the bidirectional screw (201) is connected to a second limiting plate (204), and a second limiting post (205) is fixed to the outside of the second limiting plate (204). The bidirectional screw (201) is provided in several groups, and the bidirectional screw (201) is distributed in an array.

3. The wind power cable anti-wear protection device according to claim 2, characterized in that: The first limiting plate (202) and the second limiting plate (204) are symmetrically distributed about the central axis of the bidirectional screw (201). There are two sets of the first limiting post (203), which are symmetrically distributed about the first limiting plate (202).

4. The wind power cable anti-wear protection device according to claim 1, characterized in that: The guide wheels (401) are provided in four groups, and the guide wheels (401) are symmetrically distributed about the central axis of the connecting frame (1). The buffer arc plates (402) are provided in several groups, and the buffer arc plates (402) are distributed in an array about the central axis of the guide wheels (401).

5. The wind power cable anti-wear protection device according to claim 1, characterized in that: The first buffer spring (403) is provided in several groups, and the first buffer spring (403) is distributed in a ring array. The first buffer spring (403) is used to compress the buffer arc plate (402).

6. The wind power cable anti-wear protection device according to claim 1, characterized in that: The piston (503) is fixed with a second electromagnet (504) on the outside, the connecting rod (502) is fixed with a buffer plate (505) on the outside, the connecting rod (502) is sleeved with a second buffer spring (506), and the buffer plate (505) is rotatably connected with a ball (507).

7. The wind power cable anti-wear protection device according to claim 1, characterized in that: The first electromagnet (501) is provided in several groups. The first electromagnet (501) is symmetrically distributed about the central axis of the connecting frame (1). The outer wall of the connecting rod (502) is attached to the inner wall of the connecting frame (1). The outer wall of the piston (503) is attached to the inner wall of the connecting frame (1). The piston (503) is slidably connected to the connecting frame (1).

8. The wind power cable anti-wear protection device according to claim 6, characterized in that: The first electromagnet (501) and the second electromagnet (504) attract each other with their magnetic forces. The buffer plate (505) is provided in four sets. The buffer plate (505) is symmetrically distributed about the central axis of the connecting frame (1). The inner wall of the buffer plate (505) is provided with a guide groove.

9. The wind power cable anti-wear protection device according to claim 6, characterized in that: The connecting rod (502) is provided in four sets. The connecting rod (502) is symmetrically distributed about the central axis of the buffer plate (505). One end of the second buffer spring (506) is fixed with a connecting frame (1), and the other end of the second buffer spring (506) is fixed with a buffer plate (505).

10. The wind power cable anti-wear protection device according to claim 6, characterized in that: The second buffer spring (506) is used to pull the buffer plate (505), and the ball bearings (507) are arranged in several groups at equal intervals.

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