Tension clamp applied to power transmission line of wind turbine generator

Abstract

The utility model discloses a kind of strain clamp applied to power transmission line of wind turbine, it is related to strain clamp technical field, the strain clamp applied to power transmission line of wind turbine includes clamp shell, U-shaped anti-drop piece and clamp pressing block, the both sides of clamp shell are protrudingly provided with cylindrical fixed part, and the center perforation between cylindrical fixed part and arc through slot is equipped with avoidance recess, so that the straight edge section of U-shaped anti-drop piece is inserted into cylindrical fixed part, then gasket and bolt are used again, the straight edge section of U-shaped anti-drop piece is locked in the lower of cylindrical fixed part. In this way, cylindrical fixed part can evenly transmit the load of U-shaped anti-drop piece along circumferential direction, avoid the stress concentration problem caused by two clamping blocks single point or line contact, reduce the loosening risk generated by vibration of bolt, so that the wear degree of gasket and bolt is weakened, guarantee the stable fixation of gasket and bolt in the straight edge section of U-shaped anti-drop piece, and the stability of entire strain clamp is good.

Description

Technical Field

[0001] This utility model relates to the field of wire clamp technology, and in particular to a tension wire clamp for transmission lines of wind turbine generators. Background Technology

[0002] Tension clamps are used to secure conductors and withstand conductor tension. In wind turbine transmission lines, tension clamps are required to restrain high-voltage transmission lines, ensuring they do not shift due to wind force.

[0003] Most existing technologies involve installing the anti-derailment component between two clamping blocks and then securing it to the clamp housing with bolts. However, when faced with frequent vibrations in transmission lines, the impact force of the vibration is directly transmitted to the bolts and washers. This method often carries the risk of bolts loosening due to vibration, resulting in significant wear on the bolts and washers, and even washers breaking or falling off, leading to poor stability of the entire tension clamp. Utility Model Content

[0004] The main purpose of this invention is to propose a tension clamp for transmission lines of wind turbine generators, aiming to solve the problem of poor stability of existing tension clamps.

[0005] To achieve the above objectives, the tension clamp for transmission lines used in wind turbine generators proposed in this utility model includes:

[0006] The wire clamp housing is provided with an arc-shaped through groove for inserting a power transmission line. The two sides of the wire clamp housing are provided with cylindrical fixing parts protruding from them. An avoidance groove is provided between the central through hole of the cylindrical fixing part and the arc-shaped through groove.

[0007] The U-shaped anti-detachment component has its straight edge section installed on the cylindrical fixing part, and the gasket and bolt are used to lock the straight edge section of the U-shaped anti-detachment component to the bottom of the cylindrical fixing part;

[0008] A wire clamping block is provided, which is clamped between the U-shaped anti-detachment component and the power transmission line. The side of the wire clamping block facing the U-shaped anti-detachment component is provided with a receiving groove, and the side of the wire clamping block facing the power transmission line is provided with an arc-shaped groove. The receiving groove and the arc-shaped groove are arranged perpendicularly.

[0009] In some embodiments, the cylindrical fixing part includes a partition and a semi-cylindrical part. The partition is located on the side of the wire clamp housing and protrudes in the width direction of the wire clamp housing. The semi-cylindrical part is fixedly connected to the partition to form a U-shaped cylindrical structure. The semi-cylindrical part is provided with the central through hole.

[0010] In some embodiments, the partition is provided with the clearance groove, and the wall surface of the clearance groove near the central perforation is a guide wall surface, which is configured with a rounded corner structure.

[0011] In some embodiments, the top of the semi-cylindrical portion is at the same height as the tops of the two side walls of the clamp housing.

[0012] In some embodiments, the wire clamping block includes an upper clamping block and a lower clamping block. The upper clamping block is provided with the receiving groove, and the lower clamping block is provided with the arc-shaped groove. Guide blocks are provided on opposite sides of the lower clamping block along the length direction of the arc-shaped groove.

[0013] In some embodiments, the inner bottom wall of the receiving groove is configured to be arc-shaped.

[0014] In some embodiments, the receiving groove has two inner sidewalls, each inner sidewall being provided with a guide slope and a blocking slope, the guide slope being inclined toward the center of the bottom wall of the receiving groove, and the blocking slope being inclined toward the center of the receiving groove.

[0015] In some embodiments, the outer top wall of the upper pressure block is configured with a rounded corner structure.

[0016] In some embodiments, the number of gaskets is greater than or equal to three.

[0017] In some embodiments, the number of cylindrical fixing parts provided on each side of the clamp housing is greater than 3, and adjacent cylindrical fixing parts are spaced apart.

[0018] The technical solution of this utility model employs cylindrical fixing parts protruding from both sides of the tension clamp housing. A clearance groove is provided between the central through hole and the arc-shaped through groove of the cylindrical fixing part, allowing the straight edge of the U-shaped anti-slip component to be inserted into the cylindrical fixing part. Then, washers and bolts are used to lock the straight edge of the U-shaped anti-slip component below the cylindrical fixing part. In this way, the cylindrical fixing part can evenly transmit the load of the U-shaped anti-slip component along the circumferential direction, avoiding stress concentration problems caused by single-point or line contact of two clamping blocks, reducing the risk of bolt loosening due to vibration, reducing the wear of the washers and bolts, and ensuring the stable fixation of the washers and bolts to the straight edge of the U-shaped anti-slip component. The overall stability of the tension clamp is good. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0020] Figure 1 A schematic diagram of the structure of an embodiment of the tension clamp provided by this utility model;

[0021] Figure 2 An exploded structural diagram of an embodiment of the tension clamp provided by this utility model;

[0022] Figure 3 This is a schematic diagram of the structure of an embodiment of the wire clamping block provided by this utility model.

[0023] Explanation of icon numbers:

[0024] 100. Tension clamp; 10. Clamp housing; 11. Arc-shaped through groove; 12. Cylindrical fixing part; 121. Central perforation; 13. Dividing part; 14. Semi-cylindrical part; 15. Clearance groove; 151. Guide wall; 20. U-shaped anti-slip component;

[0025] 30. Wire clamping block; 31. Upper clamping block; 311. Receiving groove; 312. Guide slope; 313. Stopping slope; 32. Lower clamping block; 321. Arc-shaped groove; 322. Guide block;

[0026] 40. Washer; 50. Bolt.

[0027] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0028] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model.

[0029] It should be noted that if the embodiments of this utility model involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a specific posture. If the specific posture changes, the directional indicators will also change accordingly.

[0030] Furthermore, if the embodiments of this utility model involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the use of "and / or" or "and / or" throughout the text includes three parallel solutions. For example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0031] Tension clamps are used to secure conductors and withstand conductor tension. In wind turbine transmission lines, tension clamps are required to restrain high-voltage transmission lines, ensuring they do not shift due to wind force.

[0032] Most existing technologies involve installing the anti-derailment component between two clamping blocks and then securing it to the clamp housing with bolts. However, when faced with frequent vibrations in transmission lines, the impact force of the vibration is directly transmitted to the bolts and washers. This method often carries the risk of bolts loosening due to vibration, resulting in significant wear on the bolts and washers, and even washers breaking or falling off, leading to poor stability of the entire tension clamp.

[0033] This utility model proposes a tension clamp 100 for use in transmission lines of wind turbine generators. Please refer to [link / reference needed]. Figures 1 to 3 In one embodiment of this utility model, the tension clamp 100 for transmission lines used in wind turbine generators proposed by this utility model includes:

[0034] The wire clamp housing 10 is provided with an arc-shaped through groove 11 for inserting a power transmission line. The two sides of the wire clamp housing 10 are provided with cylindrical fixing parts 12. An avoidance groove 15 is provided between the central through hole 121 of the cylindrical fixing part 12 and the arc-shaped through groove 11.

[0035] U-shaped anti-detachment component 20, the straight edge of which is installed on the cylindrical fixing part 12, and the gasket 40 and bolt 50 are used to lock the straight edge of the U-shaped anti-detachment component 20 below the cylindrical fixing part 12.

[0036] The wire clamp 30 is clamped between the U-shaped anti-detachment component 20 and the power transmission line. The wire clamp 30 has a receiving groove 311 on the side facing the U-shaped anti-detachment component 20 and an arc-shaped groove 321 on the side facing the power transmission line. The receiving groove 311 and the arc-shaped groove 321 are arranged perpendicularly.

[0037] The technical solution of this utility model employs a cylindrical fixing part 12 protruding from both sides of the online clamp housing 10. A clearance groove 15 is provided between the central through hole 121 of the cylindrical fixing part 12 and the arc-shaped through groove 11, allowing the straight edge of the U-shaped anti-slip member 20 to be inserted into the cylindrical fixing part 12. Then, a washer 40 and a bolt 50 are used to lock the straight edge of the U-shaped anti-slip member 20 below the cylindrical fixing part 12. In this way, the cylindrical fixing part 12 can evenly transmit the load of the U-shaped anti-slip member 20 along the circumferential direction, avoiding stress concentration problems caused by single-point or line contact of two clamping blocks, reducing the risk of loosening of the bolt 50 due to vibration, reducing the wear of the washer 40 and bolt 50, and ensuring the stable fixation of the washer 40 and bolt 50 to the straight edge of the U-shaped anti-slip member 20. The overall stability of the tension clamp 100 is good.

[0038] The cylindrical fixing part 12 includes a partition part 13 and a semi-cylindrical part 14. The partition part 13 is provided on the side of the wire clamp housing 10 and protrudes in the width direction of the wire clamp housing 10. The semi-cylindrical part 14 is fixedly connected to the partition part to form a U-shaped cylindrical structure. The semi-cylindrical part 14 is provided with the central through hole 121.

[0039] The cylindrical fixing part 12 is provided with a semi-cylindrical part 14 so that the straight edge of the U-shaped anti-detachment member 20 can be directly inserted into the central through hole 121, thereby achieving rapid positioning of the U-shaped anti-detachment member 20. The cylindrical fixing part 12 is provided with the partition part 13 to reduce the friction between the gasket 40 sleeved on the U-shaped anti-detachment member 20 and the outer wall of the wire clamp housing 10.

[0040] In order to facilitate the smooth insertion of the straight edge of the U-shaped anti-detachment component 20 into the central through hole 121, the partition 13 is provided with the avoidance groove 15. The wall surface of the avoidance groove 15 near the central through hole 121 is a guide wall surface 151, and the guide wall surface 151 is set with a rounded corner structure.

[0041] In one embodiment, the top of the semi-cylindrical portion 14 is at the same height as the tops of the two side walls of the clamp housing 10.

[0042] In one embodiment, the wire clamping block 30 includes an upper clamping block 31 and a lower clamping block 32. The upper clamping block 31 is provided with the receiving groove 311, and the lower clamping block 32 is provided with the arc-shaped groove 321. Guide blocks 322 are provided on opposite sides of the lower clamping block 32 along the length direction of the arc-shaped through groove 11.

[0043] The lower pressure block 32 is provided with an arc-shaped groove 321, which presses against the power transmission line located at the arc-shaped through groove 11 to ensure that the power transmission line is limited in the arc-shaped through groove 11 and is not easy to shake.

[0044] The inner bottom wall of the receiving groove 311 is arc-shaped, and part of the structure of the U-shaped anti-detachment component 20 is confined within the receiving groove 311.

[0045] Furthermore, the receiving groove 311 has two inner sidewalls, each of which is provided with a guide slope 312 and a blocking slope 313. The guide slope 312 is inclined toward the center of the bottom wall of the receiving groove 311, and the blocking slope 313 is inclined toward the center of the receiving groove 311. This arrangement facilitates the U-shaped anti-detachment member 20 to slide into the receiving groove 311, and makes it more difficult for the U-shaped anti-detachment member 20 to slide out of the receiving groove 311, thereby reducing the likelihood of the U-shaped anti-detachment member 20 sliding out of the receiving groove 311 under frequent vibrations of the transmission line.

[0046] The outer top wall of the upper pressure block 31 is configured with a rounded corner structure.

[0047] In one embodiment, the number of gaskets 40 is greater than or equal to three.

[0048] Optionally, the number of cylindrical fixing parts 12 provided on each side of the wire clamp housing 10 is greater than 3, and adjacent cylindrical fixing parts 12 are spaced apart. In one embodiment, each side of the wire clamp housing 10 is provided with 4 cylindrical fixing parts 12.

[0049] The above description is merely an exemplary embodiment of the present utility model and does not limit the scope of protection of the present utility model. Any equivalent structural transformations made based on the technical concept of the present utility model and the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the scope of protection of the present utility model.

Claims

1. A tension clamp for transmission lines used in wind turbine generators, characterized in that, include: The wire clamp housing is provided with an arc-shaped through groove for inserting a power transmission line. The two sides of the wire clamp housing are provided with cylindrical fixing parts protruding from them. An avoidance groove is provided between the central through hole of the cylindrical fixing part and the arc-shaped through groove. The U-shaped anti-detachment component has its straight edge section installed on the cylindrical fixing part, and the gasket and bolt are used to lock the straight edge section of the U-shaped anti-detachment component to the bottom of the cylindrical fixing part; A wire clamping block is provided, which is clamped between the U-shaped anti-detachment component and the power transmission line. The side of the wire clamping block facing the U-shaped anti-detachment component is provided with a receiving groove, and the side of the wire clamping block facing the power transmission line is provided with an arc-shaped groove. The receiving groove is perpendicular to the arc-shaped groove. The cylindrical fixing part includes a partition and a semi-cylindrical part. The partition is located on the side of the wire clamp housing and protrudes in the width direction of the wire clamp housing. The semi-cylindrical part is fixedly connected to the partition to form a U-shaped cylindrical structure. The semi-cylindrical part has a central through hole. The partition has a relief groove. The wall surface of the relief groove near the central through hole is a guide wall surface with rounded corners. The top of the semi-cylindrical part is at the same height as the tops of the two side walls of the wire clamp housing. The wire clamping block includes an upper clamping block and a lower clamping block. The upper clamping block is provided with the receiving groove, and the lower clamping block is provided with the arc-shaped groove. Guide blocks are provided on opposite sides of the lower clamping block along the length of the arc-shaped groove. The inner bottom wall of the receiving groove is arc-shaped. The receiving groove has two inner side walls, each of which is provided with a guide slope and a blocking slope. The guide slope is inclined toward the center of the bottom wall of the receiving groove, and the blocking slope is inclined toward the center of the receiving groove. The outer top wall of the upper clamping block is rounded.

2. The tension clamp as described in claim 1, characterized in that, The number of gaskets is greater than or equal to 3.

3. The tension clamp as described in claim 1, characterized in that, The number of cylindrical fixing parts provided on each side of the clamp housing is greater than 3, and two adjacent cylindrical fixing parts are spaced apart.

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