Electrical performance detection device for the tension state of cables and wires in ring network boxes and pole-mounted circuit breakers

Abstract

The present invention relates to the technical field of cable detection and analysis, and discloses a device for detecting the electrical performance of cables and wires in a stretched state of a ring network box and a pole-mounted circuit breaker, comprising a support platform, a stretching component, a transmission component, a detection component, a regulating component, a fixing component and a winding component. The support platform is provided with a stretching component, and the stretching component comprises a conveying member and a stretching member relatively arranged on the support platform, the conveying member is used for inputting a cable of a set length, and the stretching member is used for stretching the input cable. The support platform is provided with a fixed conveying member and a sliding stretching member, respectively, and the stretching member slides on the support platform. When the fixing component is not triggered, the cable is loaded, and when the fixing component is triggered, the cable is fixed, and the cable is stretched while the stretching member is continuously moving, thereby further improving the length consistency of the cable stretching, that is, improving the data accuracy of electrical performance detection in the stretched state of the cable.

Description

Technical Field

[0001] The invention relates to the technical field of cable detection and analysis, and in particular to a device for detecting the electrical performance of cables and wires in a stretched state of a ring network box or a pole-mounted circuit breaker. Background Art

[0002] The ring main box is an electrical device commonly used in medium-voltage distribution networks. It can be connected to other ring main boxes, substations, loads, etc. through cables to form a ring network; the pole-mounted circuit breaker is a switching device installed on a power pole tower, mainly used for protection in the power distribution system. The ring main box and the pole-mounted circuit breaker are both connected to cables and wires.

[0003] During the use of cables and wires, they often encounter various stresses and loads, such as tension, pressure and other forces acting on the cables, which cause changes in the electrical properties of the cables. Especially in windy areas, in order to prevent the electrical performance of the cables from failing to meet the requirements of normal use, it is necessary to understand the electrical performance of the cables under tension. Traditional cable electrical performance testing tools can often only test the electrical performance of the cables under normal working conditions, and cannot promptly detect potential electrical performance defects that may occur when the cables are stretched.

[0004] According to the Chinese invention patent number: CN117572173A, a cable testing device and a cable electrical performance testing method are proposed, wherein the device includes a shell, two tension modules, two clamping modules and two cable terminals. The tensile section of the cable to be tested is clamped by the clamping module and then stretched by the tension module. The two ends of the cable to be tested are respectively connected to the two cable terminals. The cable to be tested can be connected to the test circuit through the cable terminals in a stretched state for electrical performance testing, which is conducive to timely discovery of potential electrical performance defects that may occur when the cable is under stress.

[0005] However, since the cable is not a completely rigid structure, during the cable clamping process, the middle part of the cable is in a suspended and sunken state, resulting in inaccurate test data and the inability to ensure the consistency of the cable clamping length each time, resulting in differences in the stretching conditions for each test. Summary of the invention

[0006] 1. Technical issues to be resolved

[0007] In view of the shortcomings of the prior art, the present invention provides an electrical performance detection device for the stretched state of cables and wires in a ring network box and a pole-mounted circuit breaker, which has the advantages of being able to improve the consistency of the clamping length of the cable each time and being able to complete the continuous stretching of the cable. It solves the problem in the above-mentioned prior art that the clamping and fixing length of the cable each time is inaccurate, resulting in inconsistent stretched states and differences in electrical detection data.

[0008] (II) Technical solution

[0009] To achieve the above objectives, the present invention provides the following technical solutions: a device for detecting the electrical performance of cables and wires in a ring network box or a pole-mounted circuit breaker in a stretched state, comprising a support platform, a stretching assembly, a transmission assembly, a detection assembly, a regulating assembly, a retaining assembly and a winding assembly.

[0010] A stretching assembly is installed on the support platform, and the stretching assembly includes a conveying member and a stretching member relatively arranged on the support platform. The conveying member is used to input a cable of a set length, and the stretching member is used to stretch the input cable. The stretching member moves in a direction away from the conveying member to achieve the effect of stretching the cable.

[0011] Both the conveying part and the stretching part are composed of a base plate, a triangular bracket and a right-angle plate. The base plate in the conveying part is fixed on one end of the support table, while the base plate in the stretching part is on the support table and slides along its length direction. A triangular bracket is fixed on the base plate, and a right-angle plate is fixed on the triangular bracket. The base plate of the stretching part is on the support table and slides along its length direction to take out a cable of a set length, and during the continuous movement, the taken out cable is subjected to a physical stretching test.

[0012] A transmission assembly is arranged on the triangular bracket, and the transmission assembly includes a transmission box which fixes the opposite side of the triangular bracket, a transmission interface is provided on the side of the transmission box, a transmission roller is movably connected in the transmission box, a cable is movably connected in the transmission interface, and the side of the cable is fitted on the side of the transmission roller. Transmission boxes are fixed on the opposite sides of the triangular brackets of the conveying member and the stretching member, and interconnected transmission interfaces are provided at both ends of the transmission box. The cable continuously passes through the transmission interfaces provided by the two transmission boxes. When the stretching member moves toward the end away from the conveying member, the transmission roller rotates to realize the cable pulling and input operation, and at a set distance, the cable pulling is stopped, and the electrical performance detection and analysis operation of the pulled cable in the stretched state is carried out, and in this way, the cable can be prevented from detaching from the detection assembly when being stretched.

[0013] A detection component for detecting the electrical performance of the cable is arranged on the right-angle plate. When the tensile member is in the process of stretching the cable, the detection component detects and analyzes the electrical performance data of the cable when it is stretched.

[0014] The right-angle plate is also provided with a regulating component for controlling the stretching member to slide on the support platform. The regulating component includes a base fixed on the right-angle plate in the conveying member and the stretching member. A driving motor is fixed on the base of the conveying member. A spiral rod is fixed on the output end of the driving motor. The spiral rod is threadedly connected to the base in the stretching member. The output end of the driving motor drives the spiral rod to rotate, so that the stretching member slides on the support platform.

[0015] A retaining assembly for clamping and fixing the cable is installed on the support platform. When the retaining assembly clamps the cable, the input operation of the cable is stopped, and the input cable is stretched by continuously moving the stretching member.

[0016] As a further improvement of the above solution, two slide rails are arranged on the support platform along its length direction, the bottom plate in the conveying member is fixed to one end of the slide rail, and the bottom plate in the stretching member is slidably connected to the side of the slide rail.

[0017] Through the above technical solution, the conveying member is fixed at one end of the slide rail, the bottom plate in the stretching member slides on the slide rail, and the movement stability of the stretching member is improved.

[0018] As a further improvement of the above scheme, two sets of transmission rollers are installed in the transmission box. The transmission rollers are composed of an auxiliary wheel and two connecting shafts. The auxiliary wheel is fixed between the connecting shafts. At the same time, a limit slide button is fixed on the connecting shaft, and a limit slide groove is opened on the transmission box. The limit slide button is slidably connected in the limit slide groove.

[0019] Through the above technical solution, the limiting sliding button slides in the limiting sliding groove, thereby improving the stability of the displacement of the driving roller.

[0020] As a further improvement of the above scheme, a stabilizing hole is penetrated through the connecting shaft, and a stabilizing rod is movably sleeved in the stabilizing hole. One end of the stabilizing rod is fixed in the transmission box. At the same time, a tension spring is movably sleeved on the side of the stabilizing rod, and the tension spring is fitted between the side of the connecting shaft and the inner wall of the transmission box.

[0021] Through the above technical solution, the tension spring is used to push the transmission roller so that the transmission roller approaches the rear end of the transmission interface, thereby clamping the cable.

[0022] As a further improvement of the above scheme, the detection component includes two connection terminals, which are respectively connected to the two ends of the cable. The connection terminals are externally connected to an external test circuit for measuring the electrical properties of the cable. The test circuit can adopt an existing test circuit to test the power frequency withstand voltage, impulse voltage, partial discharge, etc. of the cable to be tested. The test circuit is not an improvement point of the present invention and will not be described in detail in this specification.

[0023] As a further improvement of the above scheme, the detection component also includes a tensile gauge fixed on the right-angle plate, a connecting plate is fixed to the output end of the tensile gauge, both ends of the connecting plate are rotatably connected to control tubes, an extension rod is threadedly connected to the control tube, one end of the extension rod is fixed to a mounting plate, a retaining plate is fixed to the mounting plate, a retaining groove is provided on the retaining plate, the side of the cable is fitted in the retaining groove, and a connecting groove is provided on the transmission box, and the retaining plate is movably connected in the connecting groove.

[0024] Through the above technical solution, while the electrical performance of the cable is tested, the cable is stretched, so that the output end of the tensile gauge is stressed, thereby also being able to detect and analyze the tensile strength and other data of the cable.

[0025] As a further improvement of the above solution, the retaining assembly includes a retaining plate, which is attached to the side of the transmission box in the conveying member. A clamping groove is opened on the side of the retaining plate, and the clamping groove corresponds to the transmission interface.

[0026] Through the above technical solution, the retaining plate is subjected to pressure drop, causing the clamping groove and the transmission interface position to be staggered, thereby fixing the cable and stopping the cable conveying operation.

[0027] As a further improvement of the above scheme, a convex strip is provided on the retaining plate, a support rod is fixed at one end of the convex strip, a fitting plate is fixed at one end of the support rod, and a fitting groove is opened on the support platform along its length direction, the fitting plate is movably sleeved in the fitting groove, a spring rod is fixed in the fitting groove, one end of the spring rod is fixed on the fitting plate, and a heightening pad is fixed at one end of the fitting plate, and the heightening pad is fitted to the bottom of the bottom plate in the tensile member.

[0028] Through the above technical solution, the spring rod is used to push the set plate upward so that the top surface of the set plate is flush with the top surface of the support platform and the heightening pad is raised. When the tensile member moves, the bottom plate presses the heightening pad downward to move the retaining plate downward, thereby achieving the effect of clamping and fixing the cable.

[0029] As a further improvement of the above scheme, a winding assembly is installed in the support table, and the winding assembly includes a protective shell movably connected in the support table, a sleeve rail is provided on the side of the protective shell, and a sliding rail bar is fixed on the side of the support table along its length direction, and the sleeve rail is slidably connected to the sliding rail bar. At the same time, a retaining screw is mounted on the auxiliary plate, and one end of the retaining screw is threadedly connected to the protective shell.

[0030] Through the above technical solution, the sleeve rail slides on the slide rail bar to improve the stability of the movement of the winding assembly, and the protective shell is connected to the stretching member through the retaining screw, so that the stretching member drives the winding assembly to move simultaneously.

[0031] As a further improvement of the above scheme, a rotating gear is rotatably connected inside the protective shell, a transmission rod is fixed on the rotating gear, a transmission gear is rotatably connected on the bottom plate in the stretching member, the transmission gear is fixed to the transmission rod, and at the same time, a transmission groove is opened on the support table along its length direction, a rack is fixed on one side of the transmission groove, and the rack is meshed with the transmission gear.

[0032] Through the above technical solution, when the protective shell moves, the transmission gear drives the transmission rod to rotate under the force of the meshing of the transmission gear and the rack.

[0033] As a further improvement of the above scheme, an assembly groove is provided on the side of the protective shell, and a gear disc is rotatably connected in the assembly groove. The gear disc is engaged with the rotating gear, and a sleeve is fixed on the gear disc. One end of the cable is sleeved on the sleeve. At the same time, a check valve is installed in the assembly groove, and an auxiliary plate is fixed on the side of the bottom plate of the tensile member. A guide hole is provided on the auxiliary plate, and the guide hole is located above the edge of the gear disc.

[0034] Through the above technical solution, the rotating gear is connected to the toothed disc to rotate the sleeve, which has the effect of winding the cable. The check valve is used to limit the reverse rotation of the toothed disc, and the guide hole is used to guide the cable to be smoothly transported into the sleeve.

[0035] Compared with the prior art, the present invention provides a device for detecting the electrical performance of cables and wires in a ring network box and a pole-mounted circuit breaker in a stretched state, which has the following beneficial effects:

[0036] 1. The electrical performance detection device for the stretched state of cables and wires of the ring network box and the pole-mounted circuit breaker is provided with a fixed conveying member and a sliding stretching member on the support platform. The stretching member slides on the support platform. When the retaining component is not triggered, the cable is loaded. When the retaining component is triggered, the cable is fixed, and the cable is stretched while the stretching member is continuously moving, thereby further improving the length consistency of the cable stretching, that is, improving the data accuracy of the electrical performance detection under the stretched state of the cable.

[0037] 2. The electrical performance detection device for the cables and wires in the stretched state of the ring network box and the pole-mounted circuit breaker can set the length of the cable wire by adjusting the position of the heightened pad in the retaining assembly on the set plate near the front end or the rear end, so as to meet the electrical performance detection of cables of different lengths in the stretched state.

[0038] 3. The electrical performance detection device for the stretched state of cables and wires of the ring network box and the pole-mounted circuit breaker can complete the feeding and stretching operations through the reciprocating operation of the stretching member. At the same time, the stretching member can also drive the winding component to move synchronously, and during the movement, the sleeve is rotated under the force of the meshing of the transmission gear and the rack to reel in the cable line that has completed the electrical performance detection in the stretched state, and the sleeve is limited to rotate in the opposite direction by the check valve. Therefore, when the stretching member is feeding, the undetected cable line is pulled and fed, thereby achieving the effect of continuity detection of the cable line, further improving the flexibility of the use of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Figure 1 It is a schematic diagram of the overall external front structure of the device of the present invention;

[0040] Figure 2 It is a schematic diagram of the overall external rear view structure of the device of the present invention;

[0041] Figure 3 It is a schematic diagram of the local structure of the support platform of the present invention;

[0042] Figure 4 It is a front view structural schematic diagram of the partial connection between the support platform and the conveying member of the present invention;

[0043] Figure 5 It is a schematic diagram of the rear view structure of the partial connection between the support platform and the conveying member of the present invention;

[0044] Figure 6 It is a front view structural diagram of the partial connection between the support platform and the tensile member of the present invention;

[0045] Figure 7 It is a schematic diagram of the rear view structure of the partial connection between the support platform and the stretching member of the present invention;

[0046] Figure 8 This is a schematic diagram of the bottom structure of the tensile member of the present invention;

[0047] Fig. 9 It is a schematic diagram of the structure of the transmission roller as a whole and the stabilizing rod separated from each other in the present invention;

[0048] Fig.10 It is a schematic diagram of the overall structure of the detection component of the present invention;

[0049] Fig.11 It is a schematic diagram of the local structure of the retaining assembly of the present invention;

[0050] Fig.12 It is a schematic diagram of the overall structure of the winding assembly of the present invention.

[0051] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0052] 1. Support platform; 102. Slide rail; 103. Transmission slide groove; 104. Rack; 105. Set groove; 106. Spring rod; 107. Slide rail;

[0053] 2. stretching assembly; 21. conveying member; 22. stretching member; 201. bottom plate; 202. triangular bracket; 203. right-angle plate; 204. transmission gear; 205. auxiliary plate; 2051. retaining screw; 206. guide hole;

[0054] 3. Transmission assembly; 301. Transmission box; 302. Transmission interface; 303. Limiting slide groove; 304. Transmission roller; 3041. Auxiliary wheel; 3042. Connecting shaft; 3043. Stable hole; 3044. Limiting slide button; 305. Stable rod; 306. Tension spring; 307. Connecting groove; 308. Cable;

[0055] 4. Detection assembly; 401. Tension gauge; 402. Connecting plate; 403. Control tube; 404. Extension rod; 405. Mounting plate; 406. Retention plate; 407. Retention groove;

[0056] 5. Control component; 501. Base; 502. Drive motor; 503. Screw rod;

[0057] 6. Retention assembly; 601. Retention plate; 602. Clamping groove; 603. Raised strip; 604. Support rod; 605. Set plate; 606. Heightening pad;

[0058] 7. Winding assembly; 701. Protective shell; 702. Rotating gear; 703. Transmission rod; 704. Assembly groove; 705. Toothed disc; 706. Sleeve; 707. Sleeve rail; 708. Backstop. DETAILED DESCRIPTION

[0059] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0060] Embodiment 1

[0061] See also Figure 1-Figure 12 As shown, a device for detecting the electrical performance of cables and wires in a stretched state of a ring network box and a pole-mounted circuit breaker proposed in this embodiment includes a support platform 1, a stretching component 2, a transmission component 3, a detection component 4, a regulating component 5, a fixing component 6 and a winding component 7.

[0062] A stretching assembly 2 is installed on the support platform 1. The stretching assembly 2 includes a conveying member 21 and a stretching member 22 relatively arranged on the support platform 1. The conveying member 21 is used to input a cable (including electric wires) of a set length, and the stretching member 22 is used to stretch the input cable. The stretching member 22 moves in a direction away from the conveying member 21 to achieve the effect of stretching the cable.

[0063] The conveying member 21 and the stretching member 22 are both composed of a base plate 201, a triangular bracket 202 and a right-angle plate 203. The base plate 201 in the conveying member 21 is fixed at one end of the support platform 1, while the base plate 201 in the stretching member 22 slides on the support platform 1 along its length direction. The triangular bracket 202 is fixed on the base plate 201, and the right-angle plate 203 is fixed on the triangular bracket 202. The base plate 201 of the stretching member 22 slides on the support platform 1 along its length direction to take out a cable of a set length, and during the continuous movement, the taken-out cable is subjected to a physical stretching test.

[0064] The triangular bracket 202 is provided with a transmission assembly 3, which includes a transmission box 301 fixed to the opposite side of the triangular bracket 202, a transmission interface 302 is provided on the side of the transmission box 301, a transmission roller 304 is movably connected in the transmission box 301, a cable 308 is movably connected in the transmission interface 302, and the side of the cable 308 is attached to the side of the transmission roller 304. The transmission boxes 301 are fixed to the opposite sides of the triangular bracket 202 of the conveying member 21 and the stretching member 22, and the two ends of the transmission box 301 are provided with mutually communicating transmission interfaces 302. The cable 308 continuously passes through the transmission interface 302 opened by the two transmission boxes 301 (the side of the cable 308 is fitted between the side close to the triangular bracket 202 and the transmission roller 304). When the stretching member 22 moves toward the end away from the conveying member 21, the transmission roller 304 rotates to realize the pulling and input operation of the cable 308. At a set distance, the pulling of the cable is stopped (this state is: rope locking state), and the electrical performance detection and analysis operation of the pulled cable 308 in the stretched state is carried out (this state is: detection state).

[0065] A detection component 4 for detecting the electrical performance of the cable is disposed on the right-angle plate 203. When the tensioning member 22 is in the process of stretching the cable 308, the detection component 4 detects and analyzes the electrical performance data of the cable when being stretched.

[0066] The right-angle plate 203 is also provided with a regulating component 5 for controlling the stretching member 22 to slide on the support platform 1. The regulating component 5 includes a base 501 fixed on the right-angle plate 203 in the conveying member 21 and the stretching member 22. A driving motor 502 is fixed on the base 501 of the conveying member 21. A screw rod 503 is fixed on the output end of the driving motor 502. The screw rod 503 is threadedly connected to the base 501 in the stretching member 22. The output end of the driving motor 502 has a bidirectional rotation function. During operation, the output end drives the screw rod 503 to rotate. Under the force of the threaded connection between the screw rod 503 and the base 501 in the stretching member 22, the stretching member 22 slides on the support platform 1.

[0067] A retaining assembly 6 for clamping and fixing the cable 308 is installed on the support platform 1. When the retaining assembly 6 clamps the cable 308, the input operation of the cable 308 is stopped (this mode is the above-mentioned rope locking state), and at the same time, the input cable is stretched by the continuous movement of the stretching member 22 (this mode is the above-mentioned detection state).

[0068] The working principle of the electrical performance detection device for the stretched state of cables and wires of the ring network box and the pole-mounted circuit breaker proposed in this embodiment is: when in use, the stretching member 22 is attached to the conveying member 21, and one end of the cable 308 is sequentially passed through the transmission interfaces 302 opened by the two transmission boxes 301 (the cable is in a U shape at this time), and the side of the cable 308 is squeezed by the transmission roller 304, so that the side of the cable 308 is tightly attached to the tail end of the transmission interface 302 (located on the side of the transmission box 301), forming a compression effect on the cable 308, at this time, the control and regulation component 5 is operated to make the stretching member 22 move toward the end away from the conveying member 21, and the clamped cable 308 is pulled to a set length, and the retaining component 6 is triggered, and the cable is locked by the retaining component 6. At this time, the stretched member 22 is continuously moved, and the pulled cable 308 is stretched. During the stretching process, the electrical performance of the cable 308 when stretched is detected and analyzed by the detection component 4.

[0069] Furthermore, two slide rails 102 are provided on the support platform 1 along its length direction, the bottom plate 201 in the conveying member 21 is fixed to one end of the slide rail 102 , and the bottom plate 201 in the stretching member 22 is slidably connected to the side of the slide rail 102 .

[0070] More specifically, the bottom of the conveying member 21 is fixed to one end of the slide rail 102 by screws, so that the conveying member 21 remains stationary during the stretching process, and a slide groove that matches the slide rail 102 is provided at the bottom of the base plate 201 in the stretching member 22. The slide groove is sleeved on the slide rail 102 to slide, thereby ensuring the stability of the movement of the stretching member 22.

[0071] Furthermore, two sets of transmission rollers 304 are installed in the transmission box 301. The transmission rollers 304 are composed of an auxiliary wheel 3041 and two connecting shafts 3042. The auxiliary wheel 3041 is fixed between the connecting shafts 3042. At the same time, a limit slide button 3044 is fixed on the connecting shaft 3042. A limit slide groove 303 is opened on the transmission box 301, and the limit slide button 3044 is slidably connected in the limit slide groove 303.

[0072] More specifically, corresponding limit slide grooves 303 are provided at both ends of the upper and lower surfaces of the transmission box 301, and limit slide buttons 3044 are provided at both ends of the transmission roller 304. The limit slide buttons 3044 are slidably connected in the corresponding limit slide grooves 303 to improve the stability of the displacement of the transmission roller 304. The auxiliary wheel 3041 is in the shape of a concave semicircular groove, so that the cable 308 can fit in the semicircular groove, stabilize the cable 308, and avoid up and down swinging.

[0073] Furthermore, a stabilizing hole 3043 is penetrated on the connecting shaft 3042, and a stabilizing rod 305 is movably sleeved in the stabilizing hole 3043. One end of the stabilizing rod 305 is fixed in the transmission box 301. At the same time, a tension spring 306 is movably sleeved on the side of the stabilizing rod 305, and the tension spring 306 is fitted between the side of the connecting shaft 3042 and the inner wall of the transmission box 301.

[0074] More specifically, the tension spring 306 is used to push the transmission roller 304 so that the transmission roller 304 approaches the rear end of the transmission interface 302 to clamp the cable 308, so that when the tension member 22 moves, the cable 308 can be pulled.

[0075] Furthermore, the detection component 4 includes two connection terminals (not shown), which are respectively connected to two ends of the cable. The connection terminals are externally connected to an external test circuit for measuring the electrical performance of the cable 308 .

[0076] While testing the electrical performance of the cable 308, the tensile performance of the cable 308 can also be tested. Furthermore, the detection component 4 is also fixed to a dynamometer 401 on the right-angle plate 203, and a connecting plate 402 is fixed to the output end of the dynamometer 401. The two ends of the connecting plate 402 are rotatably connected to a regulating tube 403, and the inner thread of the regulating tube 403 is connected to an extension rod 404. A mounting plate 405 is fixed to one end of the extension rod 404, and a retaining plate 406 is fixed to the mounting plate 405. A retaining groove 407 is provided on the retaining plate 406, and the side of the cable 308 is fitted in the retaining groove 407. At the same time, a connecting groove 307 is provided on the transmission box 301, and the retaining plate 406 is movably connected in the connecting groove 307.

[0077] More specifically, the retaining groove 407 is flush with the auxiliary wheel 3041. When the cable 308 is stretched, the tension generated causes the transmission roller 304 to move, so that the cable 308 fits in the retaining groove 407. When stretched, the output end of the dynamometer 401 is subjected to force, thereby detecting and analyzing the tensile strength and other data of the cable 308.

[0078] Embodiment 2

[0079] See also Figure 1 , Figure 3 , Figure 4 and Fig.11 As shown, the electrical performance detection device for the ring network box and the pole-mounted circuit breaker cable wire tensile state mentioned in this embodiment, on the basis of the first embodiment, this embodiment also includes that the retaining component 6 includes a retaining plate 601, the retaining plate 601 is attached to the side of the transmission box 301 in the conveying member 21, and the side of the retaining plate 601 is provided with a clamping groove 602, and the clamping groove 602 corresponds to the transmission interface 302.

[0080] The retaining plate 601 is pressed down, causing the clamping groove 602 and the transmission interface 302 to intersect each other, thereby achieving the function of retaining the cable 308 and stopping the conveying operation of the cable 308.

[0081] Furthermore, a convex strip 603 is provided on the retaining plate 601, a support rod 604 is fixed at one end of the convex strip 603, a set plate 605 is fixed at one end of the support rod 604, and a set groove 105 is opened on the support platform 1 along its length direction, the set plate 605 is movably sleeved in the set groove 105, a spring rod 106 is fixed in the set groove 105, one end of the spring rod 106 is fixed on the set plate 605, and a heightening pad 606 is fixed at one end of the set plate 605, and the heightening pad 606 is fitted to the bottom of the bottom plate 201 in the stretching member 22.

[0082] More specifically, the spring rod 106 is used to push the set plate 605 upward so that the top surface of the set plate 605 is flush with the top surface of the support platform 1, thereby making the heightened pad 606 bulge. When the stretching member 22 moves, the bottom plate 201 presses the heightened pad 606 downward so that the set plate 605 moves downward to the depth of the set groove 105. At the same time, the spring rod 106 is tightened to pull the retaining plate 601 downward, thereby achieving the effect of clamping the cable 308 by staggering the clamping groove 602 and the transmission interface 302.

[0083] It should be further explained that the length of the heightened pad 606 is set according to the actual stretching distance required for the cable 308, and the heightened pad 606 is fixed to the set plate 605 with screws, and can be adjusted according to the length of the cable 308 tested each time, thereby meeting the purpose of electrical performance testing of the cable 308 under equidistant stretching states of different lengths.

[0084] When the heightening pad 606 is installed at one end close to the conveying member 21, the time for triggering the rope locking state becomes shorter when the stretching member 22 moves, and when the heightening pad 606 is installed at one end close to the stretching member 22, the time for triggering the rope locking state becomes longer, thereby being able to flexibly set the stretching length of each batch of cables 308, so that the electrical performance detection effect of each batch of cables 308 under the equidistant stretching state can be achieved.

[0085] Furthermore, the thickness of the heightened pad 606 can be set according to the diameter of the cable 308. When the thickness of the heightened pad 606 is relatively large, when the retaining plate 601 moves downward, the overlapping space between the clamping groove 602 and the transmission interface 302 becomes smaller, so that the cable 308 with a smaller diameter can be clamped and fixed. When the thickness of the heightened pad 606 is relatively thin, the overlapping space between the clamping groove 602 and the transmission interface 302 becomes larger, so that the cable 308 with a larger diameter can be clamped and fixed.

[0086] Embodiment 3

[0087] See also Figure 1 , Figure 6 , Figure 7 and Fig.12 As shown, the electrical performance detection device for the tensile state of the ring network box and the pole-mounted circuit breaker cable and wire mentioned in this embodiment, on the basis of embodiment one and embodiment two, this embodiment also includes that a winding assembly 7 is installed in the support platform 1, and the winding assembly 7 includes a protective shell 701 movably connected in the support platform 1, and a sleeve rail 707 is provided on the side of the protective shell 701. A slide rail bar 107 is fixed on the side of the support platform 1 along its length direction, and the sleeve rail 707 is slidably connected to the slide rail bar 107, and at the same time, a retaining screw 2051 is mounted on the auxiliary plate 205, and one end of the retaining screw 2051 is threadedly connected to the protective shell 701.

[0088] When the protective shell 701 moves, it slides on the slide rail 107 through the sleeve rail 707 to improve the stability of the movement of the winding assembly 7. The protective shell 701 is connected to the stretching member 22 through the retaining screw 2051. When the stretching member 22 moves, it can drive the winding assembly 7 to move at the same time.

[0089] Furthermore, a rotating gear 702 is rotatably connected inside the protective shell 701, a transmission rod 703 is fixed on the rotating gear 702, a transmission gear 204 is rotatably connected on the base plate 201 in the stretching member 22, the transmission gear 204 is fixed to the transmission rod 703, and at the same time, a transmission groove 103 is opened on the support platform 1 along its length direction, a rack 104 is fixed on one side of the transmission groove 103, and the rack 104 is meshed with the transmission gear 204.

[0090] More specifically, when the protective housing 701 moves, the transmission gear 204 drives the transmission rod 703 to rotate under the force of the meshing between the transmission gear 204 and the rack 104 .

[0091] Furthermore, an assembly groove 704 is provided on the side of the protective shell 701, and a toothed disc 705 is rotatably connected in the assembly groove 704. The toothed disc 705 is meshed with the rotating gear 702. A sleeve 706 is fixed on the toothed disc 705, and one end of the cable 308 is sleeved on the sleeve 706. At the same time, a check valve 708 is installed in the assembly groove 704. An auxiliary plate 205 is fixed on the side of the bottom plate 201 of the tensile member 22, and a guide hole 206 is provided on the auxiliary plate 205. The guide hole 206 is located above the edge of the toothed disc 705.

[0092] More specifically, when the stretching member 22 moves toward the conveying member 21, the rotating gear 702 rotates, and through the meshing force, the toothed disc 705 drives the sleeve 706 to rotate in the opposite direction, so that the cable 308 that has been tested is wound up. When the stretching member 22 moves in the opposite direction of the conveying member 21, the check valve 708 limits the reverse rotation of the toothed disc 705 to avoid the phenomenon of the wound cable 308 falling off.

[0093] Furthermore, after passing through the guide hole 206 , the cable 308 is wound around the side of the sleeve 706 , playing a guiding role, thereby preventing the cable 308 from contacting the toothed disc 705 during the winding process, thereby causing friction damage.

[0094] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A device for detecting the electrical performance of cables and wires in a tensioned state of a ring network box or a pole-mounted circuit breaker, comprising a support platform (1), a tensioning component (2), a transmission component (3), a detection component (4), a regulating component (5), a retaining component (6) and a winding component (7), It is characterized by: A stretching assembly (2) is mounted on the support platform (1), the stretching assembly (2) comprising a conveying member (21) and a stretching member (22) which are arranged relative to the support platform (1), the conveying member (21) being used to input a cable of a set length, and the stretching member (22) being used to stretch the input cable; The conveying member (21) and the stretching member (22) are both composed of a bottom plate (201), a triangular bracket (202) and a right-angle plate (203); the bottom plate (201) in the conveying member (21) is fixed to one end of the support platform (1), while the bottom plate (201) in the stretching member (22) slides on the support platform (1) along its length direction, the triangular bracket (202) is fixed to the bottom plate (201), and the right-angle plate (203) is fixed to the triangular bracket (202); The triangular support (202) is provided with a transmission assembly (3), the transmission assembly (3) comprising a transmission box (301) fixed to the opposite side of the triangular support (202), a transmission interface (302) being provided on the side of the transmission box (301), a transmission roller (304) being movably connected in the transmission box (301), a cable (308) being movably connected in the transmission interface (302), a side of the cable (308) being attached to a side of the transmission roller (304), the transmission boxes (301) being fixed to the opposite sides of the triangular support (202) of the conveying member (21) and the stretching member (22), and mutually communicating transmission interfaces (302) being provided at both ends of the transmission box (301); Two sets of transmission rollers (304) are installed in the transmission box (301), and the transmission rollers (304) are composed of an auxiliary wheel (3041) and two connecting shafts (3042). The auxiliary wheel (3041) is fixed between the connecting shafts (3042), and a limit sliding button (3044) is fixed on the connecting shaft (3042). A limit sliding groove (303) is provided on the transmission box (301), and the limit sliding button (3044) is slidably connected in the limit sliding groove (303); The connecting shaft (3042) is penetrated by a stabilizing hole (3043), a stabilizing rod (305) is movably sleeved in the stabilizing hole (3043), one end of the stabilizing rod (305) is fixed in the transmission box (301), and a tension spring (306) is movably sleeved on the side of the stabilizing rod (305), and the tension spring (306) is fitted between the side of the connecting shaft (3042) and the inner wall of the transmission box (301); The right-angle plate (203) is provided with a detection component (4) for detecting the electrical performance of the cable; The right-angle plate (203) is also provided with a regulating component (5) for controlling the stretching member (22) to slide on the support platform (1), the regulating component (5) comprising a base (501) fixed on the right-angle plate (203) in the conveying member (21) and the stretching member (22), a driving motor (502) being fixed on the base (501) of the conveying member (21), a screw rod (503) being fixed at the output end of the driving motor (502), and the screw rod (503) being threadedly connected to the base (501) in the stretching member (22); A retaining assembly (6) for clamping and fixing the cable (308) is installed on the support platform (1).

2. The electrical performance detection device for the tension state of cables and wires of ring network boxes and pole-mounted circuit breakers according to claim 1 is characterized by: The support platform (1) is provided with two slide rails (102) along its length direction; the bottom plate (201) in the conveying member (21) is fixed to one end of the slide rail (102), and the bottom plate (201) in the stretching member (22) is slidably connected to the side of the slide rail (102).

3. The electrical performance detection device for the tension state of cables and wires of ring network boxes and pole-mounted circuit breakers according to claim 1 is characterized by: The detection component (4) comprises two connection terminals, which are respectively connected to two ends of the cable, and the connection terminals are externally connected to an external test circuit for measuring the electrical performance of the cable (308).

4. The electrical performance detection device for the tensile state of cables and wires of a ring network box and a pole-mounted circuit breaker according to claim 3, wherein the detection component (4) further comprises a dynamometer (401) fixed on the right-angle plate (203), a connecting plate (402) being fixed to the output end of the dynamometer (401), a regulating tube (403) being rotatably connected to both ends of the connecting plate (402), an extension rod (404) being internally threadedly connected to the regulating tube (403), a mounting plate (405) being fixed to one end of the extension rod (404), a retaining plate (406) being fixed to the mounting plate (405), a retaining groove (407) being provided on the retaining plate (406), a side of the cable (308) being fitted in the retaining groove (407), and a connecting groove (307) being provided on the transmission box (301), the retaining plate (406) being movably connected in the connecting groove (307).

5. According to the device for detecting the electrical performance of the cable wire in the tensile state of the ring network box and the pole-mounted circuit breaker of claim 1, the retaining component (6) comprises a retaining plate (601), the retaining plate (601) is attached to the side of the transmission box (301) in the conveying member (21), and a clamping groove (602) is provided on the side of the retaining plate (601), and the clamping groove (602) corresponds to the transmission interface (302); The retaining plate (601) is provided with a convex strip (603), one end of which is fixed with a support rod (604), one end of which is fixed with a set plate (605), and at the same time, a set groove (105) is provided on the support platform (1) along its length direction, the set plate (605) is movably sleeved in the set groove (105), a spring rod (106) is fixed in the set groove (105), one end of the spring rod (106) is fixed on the set plate (605), and at the same time, a heightening pad (606) is fixed at one end of the set plate (605), and the heightening pad (606) is fitted on the bottom of the bottom plate (201) of the stretching member (22).

6. The electrical performance detection device for the tension state of cables and wires of ring network boxes and pole-mounted circuit breakers according to claim 5 is characterized by: A winding assembly (7) is installed in the support platform (1), and the winding assembly (7) includes a protective shell (701) movably connected to the support platform (1), and a sleeve rail (707) is arranged on the side of the protective shell (701). A slide rail (107) is fixed to the side of the support platform (1) along its length direction, and the sleeve rail (707) is slidably connected to the slide rail (107). At the same time, a retaining screw (2051) is mounted on the auxiliary plate (205), and one end of the retaining screw (2051) is threadedly connected to the protective shell (701).

7. The electrical performance detection device for the tension state of cables and wires of ring network boxes and pole-mounted circuit breakers according to claim 6 is characterized by: A rotating gear (702) is rotatably connected inside the protective shell (701), a transmission rod (703) is fixed on the rotating gear (702), a transmission gear (204) is rotatably connected to the bottom plate (201) in the stretching member (22), the transmission gear (204) is fixed to the transmission rod (703), and a transmission slot (103) is provided on the support platform (1) along its length direction, a rack (104) is fixed on one side of the transmission slot (103), and the rack (104) is meshed with the transmission gear (204).

8. The electrical performance detection device for the tension state of cables and wires of ring network boxes and pole-mounted circuit breakers according to claim 7 is characterized by: The protective housing (701) has an assembly groove (704) on the side thereof, a toothed disc (705) is rotatably connected in the assembly groove (704), the toothed disc (705) is meshed with the rotating gear (702), a sleeve (706) is fixed on the toothed disc (705), one end of the cable (308) is sleeved on the sleeve (706), and a check valve (708) is installed in the assembly groove (704), an auxiliary plate (205) is fixed on the side of the bottom plate (201) of the tension member (22), a guide hole (206) is formed in the auxiliary plate (205), and the guide hole (206) is located above the edge of the toothed disc (705).

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