Cable and return wire fixer

Abstract

The utility model discloses a cable and return wire fixer, comprising a hoop unit comprising a first hoop and a second hoop which are arranged in parallel; the adjusting unit comprises an arc-shaped seat, a sliding block and a sliding rod, the arc-shaped seat is arranged on the periphery of the first hoop in the circumferential direction, a sliding groove is formed in the arc-shaped seat in the circumferential direction of the arc-shaped seat, the sliding block is slidably installed in the sliding groove, the sliding rod is arranged in the radial direction of the sliding groove, and the arc-shaped seat is arranged on the sliding rod. One end of the sliding rod is connected with the sliding block, and the other end of the sliding rod is connected with the second hoop. The arc-shaped seat, the sliding block and the sliding rod are arranged between the first hoop and the second hoop, so that the cable and the return wire are fixed, the positions and the distance of the cable and the return wire can be adjusted and limited, the mounting efficiency is improved, and the safe distance between the cable and the return wire can be ensured.

Description

Technical Field

[0001] This utility model relates to a cable and return cable fixing device, belonging to the technical field of cable and return cable installation. Background Technology

[0002] For single-core cable lines with direct grounding at a single point, during a power frequency short circuit, first calculate whether the sheath induced voltage requirement is met, assuming the entire circuit is grounded. If the power frequency induced voltage generated by the cable's metallic sheath during a system short circuit exceeds the cable sheath insulation withstand strength or the power frequency withstand voltage of the sheath voltage limiter, or if it is necessary to suppress the electrical interference intensity of nearby weak current lines, a return conductor with lower impedance should be laid parallel to the cable line. The return conductor generally has an insulation layer. The impedance of the return conductor and the grounding resistance at both ends should be sufficient to suppress the power frequency induced overvoltage of the cable's metallic sheath, and its cross-section should meet the thermal steady-state requirements under the action of the maximum transient current. The arrangement of the return conductor should minimize the losses generated on the return conductor during normal cable operation. When any terminal of the cable line is in a power plant or substation, the return conductor should be connected to the grounding grid for the power, source, and neutral grounds. When a single-circuit cable is arranged in a straight line (horizontal or vertical), the return conductor should be arranged in a "3-7" pattern, with one equidistant transposition. However, in engineering projects, cables and return lines are usually installed separately. Due to differences in laying environment and construction technology, the distance between return lines and cables is often not effectively guaranteed, which poses certain safety risks. Utility Model Content

[0003] Based on the above, this utility model provides a cable and return line fixing device to overcome the shortcomings of the prior art.

[0004] The technical solution of this utility model is: a cable and return cable fixing device, comprising:

[0005] A clamp unit, comprising a first clamp and a second clamp arranged side by side;

[0006] The adjustment unit includes an arc-shaped seat, a sliding block, and a sliding rod. The arc-shaped seat is disposed on the periphery of the first clamp, and a sliding groove is provided on the arc-shaped seat along its periphery. The sliding block is slidably installed in the sliding groove, and the sliding rod is disposed on the radial side of the sliding groove. One end of the sliding rod is connected to the sliding block, and the other end is connected to the second clamp.

[0007] In one example, the sliding rod includes a threaded rod, a threaded sleeve, a first nut, and a second nut. The threaded rod is connected to the sliding block, the threaded sleeve is fitted onto the threaded rod, the outer end of the threaded sleeve is connected to the second clamp, the first nut is fitted between the threaded sleeve and the sliding block, and the second nut is fitted outside the threaded sleeve.

[0008] In one example, the sliding groove is a convex groove or a dovetail groove.

[0009] In one example, the first clamp includes two first half clamps and a first fastener that closes the two first half clamps together; the arc-shaped seat is disposed on the circumferential outer side of the first half clamp.

[0010] In one example, the second clamp includes two second half clamps and a second fastener that closes the two second half clamps together; the end of the sliding rod is connected to the outer middle of one of the second half clamps.

[0011] The beneficial effects of this utility model are as follows: by setting an arc-shaped seat, a sliding block and a sliding rod between the first clamp and the second clamp, the cable and return line can be fixed at the same time, and the position and distance between them can be adjusted and limited. This not only improves the installation efficiency, but also ensures the safe distance between them. Attached Figure Description

[0012] Figure 1 A three-dimensional schematic diagram of the cable and return cable clamp;

[0013] Figure 2 Front view of the cable and return cable clamp;

[0014] Figure 3 This is a schematic diagram of the first clamp;

[0015] Figure 4 This is a schematic diagram of the adjustment unit and the second clamp;

[0016] Figure 5 This is an installation diagram;

[0017] Explanation of reference numerals in the attached figures:

[0018] Clamp unit: 11 First clamp, 111 First half clamp, 112 First fastener, 12 Second clamp, 121 Second half clamp, 122 Second fastener;

[0019] Adjustment unit: 21 arc-shaped seat, 22 sliding block, 23 sliding rod, 231 threaded rod, 232 threaded sleeve, 233 first nut, 234 second nut, 24 sliding groove. Detailed Implementation

[0020] To make the above-mentioned objectives, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0021] Please see Figures 1 to 5 This embodiment provides a cable and return cable fixing device, including a clamp unit and an adjustment unit.

[0022] The clamp unit includes a first clamp 11 and a second clamp 12 arranged side by side. The first clamp 11 includes two first half clamps 111 and a first fastener 112 that closes and connects the two first half clamps 111. The first fastener 112 can be a bolt and nut, and the first clamp 11 can fix the cable. The second clamp 12 includes two second half clamps 121 and a second fastener 122 that closes and connects the two second half clamps 121. The second fastener 122 can be a bolt and nut, and the second clamp 12 can fix the return cable.

[0023] The adjustment unit includes an arc-shaped seat 21, a sliding block 22, and a sliding rod 23. The arc-shaped seat 21 is fixedly installed on the outer circumferential direction of the first clamp 11. The arc-shaped seat 21 is provided with a sliding groove 24 along its circumference. The sliding groove 24 is a convex groove. The sliding block 22 is slidably installed in the sliding groove 24. The sliding rod 23 is located in the radial direction of the sliding groove 24. One end of the sliding rod 23 is connected to the sliding block 22, and the other end is fixedly connected to the outer middle of the second half clamp 121 of the second clamp 12.

[0024] By using the arc-shaped seat 21, sliding block 22 and sliding rod 23, the cable and return line can be fixed while their positions and distances can be adjusted and limited, which not only improves installation efficiency but also ensures a safe distance between them.

[0025] For ease of operation, the sliding rod 23 includes a threaded rod 231, a threaded sleeve 232, a first nut 233, and a second nut 234. The threaded rod 231 is connected to the sliding block 22. The threaded sleeve 232 is fitted onto the threaded rod 231, and the outer end of the threaded sleeve 232 is connected to the second clamp 12. The first nut 233 is fitted between the threaded sleeve 232 and the sliding block 22, and the threaded rod 231 is fixed to the arc-shaped seat 21 by the first nut 233. The second nut 234 is fitted outside the threaded sleeve 232, and the second nut 234 prevents the threaded sleeve 232 from detaching from the threaded rod 231.

[0026] For ease of operation, the arc-shaped seat 21 is fixed to the outer circumferential side of the first half-clamp 111, and the arc-shaped seat 21 can be integrally formed with the first half-clamp 111.

[0027] The working principle of the above-mentioned cable and return line fixing device is as follows: First, the cable is installed in the first clamp 11, then the sliding block 22 and the sliding rod 23 are installed on the arc-shaped seat 21 and adjusted to the predetermined distance, and then the return line is installed in the second clamp 12.

[0028] The embodiments described above are merely illustrative of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this 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 cable and return cable fixing device, characterized in that, include: The clamp unit includes a first clamp (11) and a second clamp (12) arranged in parallel. The adjustment unit includes an arc-shaped seat (21), a sliding block (22), and a sliding rod (23). The arc-shaped seat (21) is disposed on the periphery of the first clamp (11). The arc-shaped seat (21) is provided with a sliding groove (24) along its periphery. The sliding block (22) is slidably installed in the sliding groove (24). The sliding rod (23) is disposed on the radial side of the sliding groove (24). One end of the sliding rod (23) is connected to the sliding block (22), and the other end is connected to the second clamp (12).

2. The cable and return cable holder according to claim 1, characterized in that, The sliding rod (23) includes a threaded rod (231), a threaded sleeve (232), a first nut (233), and a second nut (234). The threaded rod (231) is connected to the sliding block (22). The threaded sleeve (232) is sleeved on the threaded rod (231). The outer end of the threaded sleeve (232) is connected to the second clamp (12). The first nut (233) is sleeved between the threaded sleeve (232) and the sliding block (22). The second nut (234) is sleeved outside the threaded sleeve (232).

3. The cable and return cable holder according to claim 1, characterized in that, The sliding groove (24) is a convex groove or a dovetail groove.

4. The cable and return cable holder according to claim 1, characterized in that, The first clamp (11) includes two first half clamps (111) and a first fastener (112) that closes and connects the two first half clamps (111); the arc-shaped seat (21) is disposed on the circumferential outer side of the first half clamp (111).

5. The cable and return cable holder according to claim 1, characterized in that, The second clamp (12) includes two second half clamps (121) and a second fastener (122) that closes the two second half clamps (121); the end of the sliding rod (23) is connected to the middle of the outer side of one of the second half clamps (121).

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