UHV overhead conductor DC resistance test fixture assembly

Abstract

The utility model discloses an extra -high voltage overhead strand direct current resistance test fixture subassembly relates to resistance test fixture subassembly technical field. The utility model discloses a base and the slide rail of fixed connection at the top of base still include: clamp part, the clamp part is provided with two, two the clamp part all sets up on the slide rail, the interval adjusting part is set up on the slide rail, the clamp part includes drive assembly, and drive assembly sets up on the slide rail, clamping subassembly, clamping subassembly installs on drive assembly, drive assembly includes the support frame of sliding connection in the slide rail outer wall. The utility model discloses through setting up the clamp part, has solved the single of fixed mode in the use process of current fixture subassembly, leads to the contact pressure uneven of clamp and strand surface, the contact area is not consistent, and then makes the contact resistance in the test loop to appear greater fluctuation, influences the stability problem of judging the conductivity of extra -high voltage overhead strand.

Description

Technical Field

[0001] This utility model belongs to the technical field of resistance testing fixture components, and in particular relates to a DC resistance testing fixture component for ultra-high voltage overhead stranded wires. Background Technology

[0002] With the accelerated development of the global energy internet, ultra-high voltage (UHV) power transmission technology, with its advantages of large capacity, low loss, and long-distance transmission, has become a core support for ensuring a safe and stable energy supply. As a key carrier of UHV transmission lines, the conductivity of UHV overhead stranded wires directly determines the transmission efficiency and operational safety of the lines. The DC resistance value is the core indicator for measuring its conductivity. Therefore, high-precision UHV overhead stranded wire DC resistance testing fixtures are needed to accurately detect its DC resistance.

[0003] However, the existing clamping components have a relatively simple fixing method during use, which leads to uneven contact pressure and inconsistent contact area between the clamp and the stranded wire surface. This results in large fluctuations in the contact resistance in the test circuit, affecting the stability of the judgment on the conductivity performance of UHV overhead stranded wire. Utility Model Content

[0004] The purpose of this utility model is to provide a DC resistance test fixture assembly for ultra-high voltage overhead stranded wires. By setting up a fixture part, it solves the problem that the existing fixture assemblies have a relatively simple fixing method during use, which leads to uneven contact pressure and inconsistent contact area between the fixture and the stranded wire surface, resulting in large fluctuations in contact resistance in the test circuit and affecting the stability of the judgment of the conductivity performance of ultra-high voltage overhead stranded wires.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution: This utility model relates to a DC resistance testing fixture assembly for ultra-high voltage overhead stranded wires, comprising a base and a slide rail fixedly connected to the top of the base, and further comprising: a clamping part, wherein two clamping parts are provided, both of which are mounted on the slide rail; a spacing adjustment part, wherein the spacing adjustment part is mounted on the slide rail; each clamping part includes a driving assembly, wherein the driving assembly is mounted on the slide rail; a clamping assembly, wherein the clamping assembly is mounted on the driving assembly; the driving assembly includes a support frame slidably connected to the outer wall of the slide rail, wherein an electric telescopic rod is fixedly connected to the bottom inner wall of the support frame, and a driving plate is fixedly connected to the output end of the electric telescopic rod; a fixed connection is made between the top inner wall and the bottom inner wall of the support frame. Two sliding rods, both of which pass through a drive plate, are slidably connected to the drive plate and the two sliding rods. A hinge block is fixedly connected to both the front and rear sides of the support frame. An L-shaped connecting rod is hinged to each of the two hinge blocks, and a transmission component is mounted on each of the two L-shaped connecting rods. The two sliding rods are located at the front and rear sides of the electric telescopic rod, respectively. The transmission component includes two transmission rods hinged to the drive plate, each of which is hinged to one of the two L-shaped connecting rods. A connecting rod is hinged to each of the two L-shaped connecting rods, and the sides of the two connecting rods closest to each other are hinged to the two hinge blocks. The two connecting rods are mirror images of each other, ensuring smooth and synchronous movement of the clamp.

[0006] Furthermore, the spacing adjustment unit includes an adjustment component mounted on a slide rail and a power component mounted on a base.

[0007] Furthermore, the clamping assembly includes a trapezoidal groove formed on the top of the support frame, and two clamps are provided on the top of the support frame. The bottom of both clamps extends into the trapezoidal groove, and both clamps are slidably connected to the trapezoidal groove. A hinge block two is fixedly connected to the side of the two clamps that is far apart from each other. The two clamps are mirror images of each other to avoid uneven contact with the stranded wire caused by the clamps tilting.

[0008] Furthermore, the adjustment assembly includes a cylindrical rod fixedly connected to the top of the slide rail. Two long slotted rods are rotatably connected to the outer wall of the cylindrical rod. Connecting blocks are fixedly connected to the sides of the two support frames that are close to each other. Connecting members are provided on the two connecting blocks. Each connecting member includes two short slotted plates that are respectively hinged to the two connecting blocks. The sides of several short slotted plates that are close to each other are hinged to the two long slotted rods, so as to transmit the power of the adjustment assembly to the clamping part and ensure the transmission of the adjustment action.

[0009] Furthermore, the power assembly includes a fixed block fixedly connected to the front side of the support frame located on the right side, and a power component is provided on the top of the base; the power component is located on the front side of the slide rail, and the power component includes an electric telescopic rod II fixedly connected to the top of the base, the output end of the electric telescopic rod II being fixedly connected to the fixed block, thereby reducing the operational intensity and improving the adjustment efficiency.

[0010] This utility model has the following beneficial effects: 1. By setting up clamping parts, after the stranded wire passes through two clamping parts, the electric telescopic rod one is activated, which drives the drive plate to slide on the slide rod. The drive plate pushes the L-shaped connecting rod to rotate around the hinge block one through the transmission rod. The L-shaped connecting rod then drives the hinge block two through the connecting rod, so that the two clamps slide in the trapezoidal slide groove and move closer to each other. Through the same operation process, the two clamping parts jointly achieve clamping of the stranded wire, reducing manual intervention, improving the convenience of operation, avoiding the limitations of a single fixing method, making the clamping fit the stranded wire better, and providing a guarantee for the stability of subsequent tests. 2. By setting up a spacing adjustment section, the distance between the two clamping sections can be adjusted according to the required spacing. After starting the electric telescopic rod, it drives the right support frame to move through the fixed block. The right support frame then drives the two short slotted plates to move through the corresponding connecting block, which in turn pushes the two long slotted rods to rotate on the cylindrical rod. The two long slotted rods then drive the left support frame to slide on the slide rail through the two short slotted plates and the connecting block on the left side, respectively. Finally, the two support frames move simultaneously and move closer to each other, realizing the adjustment of the spacing between the two clamping sections. This reduces the intensity of manual operation, improves the convenience and efficiency of spacing adjustment, and avoids the limitations caused by fixed spacing.

[0011] Of course, any product implementing this utility model does not necessarily need to achieve all of the advantages described above at the same time. Attached Figure Description

[0012] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments 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 these drawings without creative effort.

[0013] Figure 1 This is a schematic diagram of the overall structure of this utility model; Figure 2 This is a partial cross-sectional view of the clamping part of this utility model; Figure 3 This utility model Figure 2 A magnified structural diagram of A in the middle; Figure 4 This is a schematic diagram of the connection structure of the clamping part of this utility model; Figure 5 This is a partial cross-sectional view of the spacing adjustment part of this utility model.

[0014] The attached diagram lists the components represented by each number as follows: 111. Base; 112. Slide rail; 2. Clamping unit; 21. Drive assembly; 211. Support frame; 212. Electric telescopic rod one; 213. Drive plate; 214. Slide rod; 215. Hinge block one; 216. L-shaped connecting rod; 217. Transmission rod; 218. Connecting rod; 22. Clamping assembly; 221. Trapezoidal slide groove; 222. Chuck; 223. Hinge block two; 3. Spacing adjustment unit; 31. Adjustment assembly; 311. Cylindrical rod; 312. Long slotted rod; 313. Connecting block; 314. Short slotted plate; 32. Power assembly; 321. Fixing block; 322. Electric telescopic rod two. Detailed Implementation

[0015] 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 protection scope of the present utility model.

[0016] Please see Figure 1-5 As shown, this utility model is a DC resistance testing fixture assembly for ultra-high voltage overhead stranded wires, including a base 111 and a slide rail 112 fixedly connected to the top of the base 111, and also including: a clamping part 2, two clamping parts 2 are provided, both clamping parts 2 are set on the slide rail 112; and a spacing adjustment part 3, the spacing adjustment part 3 is set on the slide rail 112.

[0017] The clamping unit 2 includes a drive assembly 21, which is mounted on the slide rail 112; and a clamping assembly 22, which is mounted on the drive assembly 21. The drive assembly 21 includes a support frame 211 slidably connected to the outer wall of the slide rail 112. An electric telescopic rod 212 is fixedly connected to the bottom inner wall of the support frame 211. A drive plate 213 is fixedly connected to the output end of the electric telescopic rod 212. Two slide rods 214 are fixedly connected between the top inner wall and the bottom inner wall of the support frame 211. Both slide rods 214 pass through the drive plate 213, and the drive plate 213 is slidably connected to the two slide rods 214. Hinges 215 are fixedly connected to the front and rear sides of the support frame 211. L-shaped connecting rods 216 are hingedly mounted on both hinges 215. Transmission components are mounted on the two L-shaped connecting rods 216. The two slide rods 214 are located at the front and rear sides of the electric telescopic rod 212, respectively. The transmission components include hinged... Two transmission rods 217 on the drive plate 213 are hinged to two L-shaped connecting rods 216 respectively. Each of the two L-shaped connecting rods 216 is hinged to a connecting rod 218. The sides of the two connecting rods 218 that are close to each other are hinged to two hinge blocks 223 respectively. The two connecting rods 218 are mirror images of each other. The clamping assembly 22 includes a trapezoidal slide groove 221 opened on the top of the support frame 211. Two clamps 222 are provided on the top of the support frame 211. The bottom of the two clamps 222 extends into the trapezoidal slide groove 221. The two clamps 222 are slidably connected to the trapezoidal slide groove 221. The sides of the two clamps 222 that are far from each other are fixedly connected to the hinge blocks 223. The two clamps 222 are mirror images of each other. By setting the clamping part 2, manual intervention is reduced, the ease of operation is improved, the limitation of a single fixing method is avoided, the clamping fits the stranded wire better, and the stability of subsequent testing is guaranteed.

[0018] The spacing adjustment unit 3 includes an adjustment assembly 31, which is mounted on the slide rail 112; and a power assembly 32, which is mounted on the base 111. The adjustment assembly 31 includes a cylindrical rod 311 fixedly connected to the top of the slide rail 112. Two long slotted rods 312 are rotatably connected to the outer wall of the cylindrical rod 311. Connecting blocks 313 are fixedly connected to the sides of the two support frames 211 that are close to each other. Connecting members are provided on the two connecting blocks 313. The connecting members include two short slotted plates 314 respectively hinged to the two connecting blocks 313, and several short slotted plates 314. The plates 314 are hinged to two long slotted rods 312 on their adjacent sides. The power assembly 32 includes a fixed block 321 fixedly connected to the front side of the support frame 211 on the right side. A power component is provided on the top of the base 111. The power component is located on the front side of the slide rail 112. The power component includes an electric telescopic rod 322 fixedly connected to the top of the base 111. The output end of the electric telescopic rod 322 is fixedly connected to the fixed block 321. By setting the spacing adjustment part 3, the intensity of manual operation is reduced, the convenience and efficiency of spacing adjustment are improved, and the limitations caused by fixed spacing are avoided.

[0019] It should be noted that the control of the two electric telescopic rods 212 and 322 in this application can both be achieved by using a program set in the control panel and inputting relevant parameters as needed for automated control. This control method can be implemented using existing technologies, such as PLC.

[0020] A specific application of this embodiment is as follows: During use, the distance between the two clamping parts 2 is adjusted according to the required spacing. At this time, the electric telescopic rod 322 is activated. The electric telescopic rod 322, through the fixing block 321, drives the support frame 211 on the right side to move. The support frame 211 on the right side, through the corresponding connecting block 313, drives the two short slotted plates 314 to move and push the two long slotted rods 312 to rotate on the cylindrical rod 311. Meanwhile, the two long slotted rods 312, through the two short slotted plates 314 and the connecting block 313 on the left side, drive the support frame 211 on the left side to slide on the slide rail 112, causing the two support frames 211 to move simultaneously and move closer to each other, thereby adjusting the two clamps. The spacing of part 2 is adjusted, and then the stranded wire passes through the two clamping parts 2. Then, the electric telescopic rod 212 is activated. At this time, the electric telescopic rod 212 drives the drive plate 213 to slide on the two slide rods 214. At this time, the drive plate 213 drives the two transmission rods 217 to move and push the two L-shaped connecting rods 216 to rotate on the corresponding hinge blocks 215. At this time, the two L-shaped connecting rods 216 push the two hinge blocks 223 through the two connecting rods 218, causing the two clamps 222 to slide in the trapezoidal slide groove 221 and move closer to each other. Through the same operation process as above, the two clamping parts 2 are activated to clamp the stranded wire. At this time, one clamping part 2 is energized and the other reads data.

[0021] In the description of this specification, references to terms such as "an embodiment," "example," "specific example," etc., indicate that a specific feature, structure, material, or characteristic described in connection with that embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0022] The preferred embodiments of this utility model disclosed above are merely illustrative of the present utility model. These preferred embodiments do not exhaustively describe all details, nor do they limit the utility model to the specific implementations described. Clearly, many modifications and variations can be made based on the content of this specification. This specification selects and specifically describes these embodiments to better explain the principles and practical applications of this utility model, thereby enabling those skilled in the art to better understand and utilize it. This utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A DC resistance testing fixture assembly for ultra-high voltage overhead stranded wires, comprising a base (111) and a slide rail (112) fixedly connected to the top of the base (111), characterized in that, Also includes: The clamping part (2) is provided in two, and both clamping parts (2) are provided on the slide rail (112); A spacing adjustment part (3) is provided on a slide rail (112); The clamping part (2) includes a drive assembly (21) disposed on the slide rail (112); and A clamping assembly (22) is mounted on a drive assembly (21); The drive assembly (21) includes a support frame (211) slidably connected to the outer wall of the slide rail (112). An electric telescopic rod (212) is fixedly connected to the bottom inner wall of the support frame (211). A drive plate (213) is fixedly connected to the output end of the electric telescopic rod (212). Two slide rods (214) are fixedly connected between the top inner wall and the bottom inner wall of the support frame (211). Both slide rods (214) penetrate the drive plate (213). The drive plate (213) is slidably connected to the two slide rods (214). A hinge block (215) is fixedly connected to the front and rear sides of the support frame (211). An L-shaped connecting rod (216) is hinged on each of the two hinge blocks (215). A transmission component is provided on each of the two L-shaped connecting rods (216). Among them, the two sliding rods (214) are located on the front and rear sides of the electric telescopic rod (212), respectively.

2. The UHV overhead stranded wire DC resistance testing fixture assembly according to claim 1, characterized in that, The spacing adjustment section (3) includes an adjustment assembly (31) mounted on a slide rail (112); and A power assembly (32) is mounted on a base (111).

3. The UHV overhead stranded wire DC resistance testing fixture assembly according to claim 2, characterized in that, The clamping assembly (22) includes a trapezoidal groove (221) formed on the top of the support frame (211). The top of the support frame (211) is provided with two clamps (222). The bottom of both clamps (222) extends into the trapezoidal groove (221). Both clamps (222) are slidably connected to the trapezoidal groove (221). A hinge block (223) is fixedly connected to the side of the two clamps (222) that is far apart from each other. The two clamps (222) are mirror images of each other.

4. The UHV overhead stranded wire DC resistance testing fixture assembly according to claim 3, characterized in that, The adjustment assembly (31) includes a cylindrical rod (311) fixedly connected to the top of the slide rail (112). Two long slotted rods (312) are rotatably connected to the outer wall of the cylindrical rod (311). Connecting blocks (313) are fixedly connected to the sides of the two support frames (211) that are close to each other. Connecting parts are provided on the two connecting blocks (313).

5. The UHV overhead stranded wire DC resistance testing fixture assembly according to claim 4, characterized in that, The power assembly (32) includes a fixing block (321) fixedly connected to the front side of the support frame (211) located on the right side, and a power component is provided on the top of the base (111); The power component is located on the front side of the slide rail (112).

6. The UHV overhead stranded wire DC resistance testing fixture assembly according to claim 5, characterized in that, The transmission component includes two transmission rods (217) hinged on the drive plate (213). The two transmission rods (217) are respectively hinged to two L-shaped connecting rods (216). Each of the two L-shaped connecting rods (216) is hinged to a connecting rod (218). The two connecting rods (218) are respectively hinged to two hinge blocks (223) on their sides that are close to each other. The two connecting rods (218) are mirror images of each other.

7. The UHV overhead stranded wire DC resistance testing fixture assembly according to claim 6, characterized in that, The connector includes two short slotted plates (314) respectively hinged on two connecting blocks (313), and the short slotted plates (314) are hinged to two long slotted rods (312) on the side of each other.

8. The UHV overhead stranded wire DC resistance testing fixture assembly according to claim 7, characterized in that, The power component includes an electric telescopic rod two (322) fixedly connected to the top of the base (111), and the output end of the electric telescopic rod two (322) is fixedly connected to the fixing block (321).

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