Power supply overhead cable tightening device

Abstract

The utility model discloses an electric power supply overhead cable tightening device which comprises a tightener hand wheel and a wrench, a rotatable winding part is arranged in the tightener hand wheel, one end of the winding part extends to the outer side of the tightener hand wheel, a ratchet wheel a and a flywheel set are installed at the end, extending to the outer side of the tightener hand wheel, of the winding part, and the flywheel set is composed of a plurality of fluted discs. Wrench supports corresponding to the fluted discs in number are installed on the tightener hand wheel, and the wrenches are connected with the wrench supports through bolts. According to the electric power supply aerial cable tightening device, through a multi-gear meshing mode of the flywheel set, the flywheel set can be meshed with different fluted discs, adjustment is carried out according to different requirements, and cables are tightened by selectively using different torques.

Description

Technical Field

[0001] This utility model relates to the technical field of cable tensioners, specifically a cable tensioning device for overhead power supply cables. Background Technology

[0002] A wire tensioner, also known as a ratchet tensioner, is used to tighten conductors during overhead line installation. To use it, first loosen the wire rope or galvanized iron wire on the tensioner and secure it to the crossarm. Clamp the conductor with wire clamps, then operate the special wrench. Due to the anti-reverse action of the pawls, the wire rope or galvanized iron wire is gradually wound around the ratchet drum, tightening the conductor. Secure the tightened conductor to the insulator. Then, first loosen the pawls to loosen the wire rope or galvanized iron wire, then loosen the wire clamps, and finally wind the wire rope or galvanized iron wire around the ratchet drum.

[0003] The cable tensioner uses a special wrench to drive a ratchet roller to rotate, winding steel wire rope or galvanized iron wire to achieve the purpose of tightening. Due to different specifications and materials, the weight of the cables also varies, and the spacing of overhead installations is also different, resulting in excessively long cable distances. This makes it difficult to drive the power arm of the cable tensioner wrench, and the length of the power arm cannot be adjusted. Therefore, technical improvements have been made to the existing cable tensioner technology. Utility Model Content

[0004] The purpose of this utility model is to provide a power supply overhead cable tensioning device to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A power supply overhead cable tensioning device includes a tensioner handwheel and a wrench. The tensioner handwheel has a built-in rotatable winding part, one end of which extends to the outside of the tensioner handwheel. A ratchet a and a flywheel assembly are installed at the end of the winding part that extends to the outside of the tensioner handwheel. The flywheel assembly consists of multiple toothed discs. A wrench bracket corresponding to the number of toothed discs is installed on the tensioner handwheel. The wrench is connected to the wrench bracket by bolts.

[0007] As a further improvement of this utility model, the tensioner handwheel is provided with a pawl a that can restrict the ratchet a from rotating in one direction.

[0008] As a further embodiment of this utility model: the wrench is provided with a mounting shaft, a drive wheel, a ratchet b, and a pawl b. The drive wheel and ratchet b are mounted on the wrench via the mounting shaft, and the wrench is provided with a pawl b that can restrict the ratchet b from rotating in one direction.

[0009] As a further improvement of this utility model: the diameter of the toothed discs of the flywheel assembly is arranged in ascending order, and the ratchet a is located between the flywheel assembly and the tensioner handwheel.

[0010] As a further improvement of this utility model: the wrench bracket is arranged in a fan shape and gradually extends inward from the winding part as the center, with the extension distance being the difference in diameter between two adjacent toothed discs.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] This overhead power cable tensioning device uses a multi-gear meshing method with a flywheel assembly to engage with different gear discs, allowing for adjustments based on different needs and selectively using different torques to tighten the cable. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of a power supply overhead cable tensioning device;

[0014] Figure 2 A schematic diagram of an embodiment of a wrench assembly in a power supply overhead cable tensioning device;

[0015] Figure 3 This is a schematic diagram of the ratchet b in a power supply overhead cable tensioning device;

[0016] Figure 4 A schematic diagram of the drive wheel in a power supply overhead cable tensioning device;

[0017] Figure 5 This is a schematic diagram of the torsion spring in a power supply overhead cable tensioning device.

[0018] In the diagram: 1. Tensioner handwheel; 2. Winding section; 3. Flywheel assembly; 4. Wrench holder; 5. Wrench; 6. Pad b; 7. Ratchet a; 8. Pad a; 9. Mounting shaft; 10. Drive wheel; 11. Ratchet b; 12. Torsion spring. Detailed Implementation

[0019] Please see Figures 1-4In this embodiment of the utility model, a power supply overhead cable tensioning device includes a tensioner handwheel 1 and a wrench 5. The tensioner handwheel 1 has a built-in rotatable winding part 2, one end of which extends to the outside of the tensioner handwheel 1. A ratchet a7 and a flywheel assembly 3 are installed at the end of the winding part 2 extending to the outside of the tensioner handwheel 1. The flywheel assembly 3 consists of multiple toothed discs. A wrench bracket 4 corresponding to the number of toothed discs is installed on the tensioner handwheel 1. The wrench 5 is connected to the wrench bracket 4 by bolts, and the wrench 5 forms a rotatable connection with different wrench brackets 4. The relationship is that the rotation of the wrench bracket 4 drives the gear plate of the meshing flywheel assembly 3 to rotate, and the rotation of the gear plate drives the winding part 2 to rotate to achieve the purpose of winding. The tensioner handwheel 1 is equipped with a pawl a8 that can limit the unidirectional rotation of the ratchet a7. The ratchet a7 and pawl a8 are ratchet mechanisms in the prior art, which are unidirectional intermittent motion mechanisms composed of ratchet and pawl. Ratchet mechanisms are commonly used in the intermittent feeding or rotation of rotary tables in various machine tools and automatic machines, and are also commonly used in jacks. This application uses the same technology to prevent the winding part 2 from being reversed by traction force.

[0020] In a preferred embodiment, the wrench 5 is provided with a mounting shaft 9, a drive wheel 10, a ratchet b11, and a pawl b6. The drive wheel 10 and the ratchet b11 are mounted on the wrench 5 via the mounting shaft 9. The wrench 5 is provided with a pawl b6 that can limit the unidirectional rotation of the ratchet b11. The ratchet b11 and the pawl b6 are also ratchet mechanisms, so that the wrench 5 forms a unidirectional rotation drive relationship with the tensioner handwheel 1 after installation. The pawl b6 is provided with a torsion spring 12 to keep the pawl b6 in contact with the ratchet b11.

[0021] In a preferred embodiment, the toothed discs of the flywheel assembly 3 are arranged in ascending order of diameter. The ratchet a7 is located between the flywheel assembly 3 and the tensioner handwheel 1. The size of the toothed disc diameter determines the torque. The wrench 5 rotates by the same amount each time. The larger the meshing diameter of the toothed disc, the greater the torque and the less force required, resulting in a smaller angle for the winding part 2 to rotate. Conversely, the smaller the meshing diameter of the toothed disc, the less the torque and the greater the force required, resulting in a larger angle for the winding part 2 to rotate. Operators can adjust according to different needs and selectively use different torques to tighten the cable.

[0022] In a preferred embodiment, the wrench bracket 4 is arranged in a fan shape and gradually extends inward from the center of the winding part 2. The extension distance is the difference in diameter between two adjacent toothed discs. Since the diameters of the toothed discs are different, the wrench 5 can only mesh with toothed discs of different diameters by changing the position of the fulcrum of the wrench 5, that is, the position of the wrench bracket 4, to compensate for the distance caused by the difference in the diameters of the toothed discs.

[0023] It should be noted that all the above embodiments belong to the same utility model concept, and the descriptions of each embodiment have different focuses. Where the description in a particular embodiment is not detailed, please refer to the description in other embodiments.

[0024] The embodiments described above merely illustrate the implementation of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A tensioning device for overhead power supply cables, comprising a tensioner handwheel (1) and a wrench (5), wherein the tensioner handwheel (1) has a built-in rotatable winding portion (2), one end of which extends to the outside of the tensioner handwheel (1), characterized in that, The winding part (2) extends to one end outside the tensioner handwheel (1) and is equipped with a ratchet a (7) and a flywheel assembly (3). The flywheel assembly (3) consists of multiple toothed discs. A wrench bracket (4) corresponding to the number of toothed discs is installed on the tensioner handwheel (1). The wrench (5) is connected to the wrench bracket (4) by bolts.

2. The overhead power supply cable tensioning device according to claim 1, characterized in that, The tensioner handwheel (1) is provided with a pawl (8) that can restrict the ratchet a (7) from rotating in one direction.

3. The overhead power supply cable tensioning device according to claim 1, characterized in that, The wrench (5) is provided with a mounting shaft (9), a drive wheel (10), a ratchet b (11) and a pawl b (6). The drive wheel (10) and the ratchet b (11) are mounted on the wrench (5) via the mounting shaft (9). The wrench (5) is provided with a pawl b (6) that can restrict the ratchet b (11) from rotating in one direction.

4. A power supply overhead cable tensioning device according to claim 1, characterized in that, The flywheel assembly (3) has its gear discs arranged in ascending order of diameter, and the ratchet a (7) is located between the flywheel assembly (3) and the tensioner handwheel (1).

5. A power supply overhead cable tensioning device according to claim 4, characterized in that, The wrench bracket (4) is arranged in a fan shape and gradually extends inward from the center of the winding part (2), with the extension distance being the difference in diameter between two adjacent toothed discs.

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