Cable insulation resistance online detection device and method

Abstract

The invention relates to the technical field of cable detection, in particular to a cable insulation resistance online detection device and method.The cable insulation resistance online detection device comprises a detection box, a guide wheel, a liquid inlet and a working assembly; the working assembly comprises a bottom sealing plate, a top plate, an expansion component, a folding and guiding component and an adjusting component; the bottom sealing plate is slidably mounted at the lower part of the interior of the detection box, the top plate is slidably mounted at the upper part of the interior of the detection box, and the two groups of expansion components are respectively mounted above the bottom sealing plate and below the top plate and are used for guiding and extending a cable entering the detection box; the folding and guiding component is mounted in the detection box, and the adjusting component is connected with the detection box, so that the soaking length of the detection cable can be quickly and flexibly adjusted through the arranged components according to the actual detection condition, and the device is higher in flexibility and efficiency during detection.

Description

Technical Field

[0001] The present invention relates to the technical field of cable detection, and particularly relates to an on-line cable insulation resistance detection device and method. Background Art

[0002] Insulation resistance is the most basic insulation index of electrical equipment and electrical circuits. Cables are commonly used in urban underground power grids, outgoing lines of power generation stations, internal power supply of industrial enterprises, and underwater power transmission lines across rivers and seas. In power lines, the proportion of cables is gradually increasing. Power cables are cable products used to transmit and distribute high-power electric energy in the main lines of the power system. During cable production, a certain amount of samples are taken to test the insulation resistance to determine whether the insulation resistance of the cable meets the requirements. During the test, the cable sample is placed in a water-filled sink, and then both ends are connected to an insulation resistance tester to test the insulation resistance of the cable;

[0003] When the existing cable insulation resistance detection device detects a cable immersed in water, in order to obtain more detailed and accurate data, it is usually necessary to adjust the length of the cable immersed in water according to the actual detection requirements. However, when the existing detection device adjusts the length of the cable to be detected, most of them need to be manually adjusted, making the entire adjustment process very inconvenient and greatly affecting the detection flexibility of the overall device. Summary of the Invention

[0004] The purpose of the present invention is to provide an on-line cable insulation resistance detection device and method, which can quickly and flexibly adjust the immersion length of the detected cable according to the actual detection situation through the provided components, making the device more flexible and efficient during detection.

[0005] To achieve the above object, the present invention provides an on-line cable insulation resistance detection device, including a detection box, guide wheels, and a liquid inlet. The two guide wheels are respectively at the inlet and outlet of the detection box, and the liquid inlet is fixedly installed on one side of the detection box. It further includes a working component;

[0006] The working component includes a bottom sealing plate, a top plate, an expansion component, a folding guide component, and an adjustment component;

[0007] The bottom sealing plate is slidably installed below the interior of the detection box, the top plate is slidably installed above the interior of the detection box. Two groups of the expansion components are respectively installed above the bottom sealing plate and below the top plate, used for guiding and extending the cable entering the detection box. The folding guide component is installed in the detection box for guiding the cable, and the adjustment component is connected to the detection box for correspondingly adjusting and driving the bottom sealing plate and the top plate.

[0008] Among them, the expansion member includes a mounting bracket, an extension bracket, an expenditure wheel, a guiding rod, and a driving component. Two of the mounting brackets are fixedly installed above the bottom sealing plate and below the top plate respectively; the extension bracket is slidably installed on each of the mounting brackets; the expenditure wheel is rotatably installed at the end of the extension bracket; the guiding rods are installed on both the front and rear sides of the mounting bracket; the driving component is connected to the mounting bracket and is used to drive the extension bracket correspondingly.

[0009] Among them, the folding and guiding member includes a translation bracket, a folding and guiding wheel, a translation screw rod, and a translation motor. The translation bracket is slidably installed inside the detection box; the folding and guiding wheel is rotatably installed on the translation bracket; the translation screw rod is threadedly connected to the translation bracket and is rotatably installed inside the detection box; the output shaft of the translation motor is connected to the translation screw rod, and the translation motor is fixedly installed on one side of the detection box.

[0010] Among them, the adjustment member includes a sliding guide plate, a support member, a double-headed screw rod, and a synchronization component. The sliding guide plates are slidably installed on both the upper and lower sides inside the detection box; the sliding guide plate slidably arranged at the top of the detection box is connected to the top plate through the support member. One side of the support member is rotatably connected to the sliding guide plate, and the other side of the support member is rotatably connected to the top plate; the sliding guide plate slidably arranged at the bottom of the detection box is connected to the bottom sealing plate through the support member. One side of the support member is rotatably connected to the sliding guide plate, and the other side of the support member is rotatably connected to the bottom sealing plate; the two double-headed screw rods are respectively connected to the sliding guide plates arranged on the upper and lower sides of the detection box. The sliding guide plate is threadedly connected to the correspondingly arranged double-headed screw rod, and the double-headed screw rods are respectively rotatably installed on the upper and lower sides inside the detection box; the synchronization component is connected to the detection box and is used to drive the double-headed screw rods arranged on the upper and lower sides inside the detection box synchronously and correspondingly.

[0011] Among them, the driving component includes an expenditure screw rod, a driving worm gear, a driving worm, and a driving motor. The expenditure screw rod is threadedly connected to the extension bracket and is rotatably installed inside the mounting bracket; the driving worm gear is fixedly installed on one side of the expenditure screw rod; the driving worm is meshed with the driving worm gear and is rotatably installed inside the mounting bracket; the output shaft of the driving motor is connected to the driving worm, and the driving motor is fixedly installed inside the mounting bracket.

[0012] Among them, the synchronization component includes a linkage bevel gear, a double-headed bevel gear shaft, a driving shaft, a driving bevel gear, and a driving motor. The linkage bevel gears are fixedly sleeved on both of the double-headed lead screws. Corresponding bevel gears are arranged on both sides of the double-headed bevel gear shaft. The two double-headed bevel gear shafts are respectively rotatably installed on the upper and lower sides of the detection box. The bevel gears of the double-headed bevel gear shaft arranged inside the detection box are meshed with the corresponding linkage bevel gears. The driving shaft is rotatably installed outside the detection box. The two driving bevel gears are respectively meshed with the bevel gears of the double-headed bevel gear shaft arranged outside the detection box. The driving bevel gears are fixedly sleeved on the driving shaft. The output shaft of the driving motor is connected to the driving shaft, and the driving motor is fixedly installed on one side of the detection box.

[0013] Among them, the working component further includes an external support, a pushing frame, a tensioning support, a tensioning wheel, a pressure sensor, and a pushing mechanism. The external support is fixedly installed on one side of the feeding port of the detection box. The pushing frame is slidably installed on the external support. The tensioning support is connected to the pushing frame. The tensioning wheel is rotatably installed on one side of the tensioning support. The pressure sensor is installed on the side of the pushing frame close to the tensioning support. The pushing mechanism is connected to the external support and is used to drive the pushing frame.

[0014] Among them, a method for on-line detection of cable insulation resistance uses the on-line detection device for cable insulation resistance, and includes the following steps.

[0015] The cable to be detected enters the interior of the detection box through the guide wheel arranged at the feeding port of the detection box.

[0016] The cable entering the interior of the detection box is guided by the expansion member arranged on the bottom sealing plate, and then is led out through the guide wheel arranged at the discharging port of the detection box.

[0017] The liquid introduced from the liquid inlet is supported and blocked by the bottom sealing plate, so that the liquid level height inside the detection box can submerge the cable guided by the expansion member on the bottom sealing plate.

[0018] When the user needs to adjust the immersion length of the cable in the detection box, the expansion member on the bottom sealing plate can increase the actual immersion length of the cable by expanding and guiding the cable.

[0019] After the expansion member on the bottom sealing plate completes the maximum expansion of the cable, the folding guide member can cooperate with the expansion member arranged on the top plate to perform secondary expansion adjustment on the cable to be detected.

[0020] An on-line detection device for cable insulation resistance of the present invention, during actual operation, the cable to be detected enters the interior of the detection box through the guiding wheel disposed at the feed port of the detection box, and the cable entering the interior of the detection box is guided by the expanding member disposed on the bottom sealing plate, and then is led out through the guiding wheel disposed at the discharge port of the detection box. The liquid introduced from the liquid inlet is supported and blocked by the bottom sealing plate, so that the liquid level height inside the detection box can submerge the cable guided by the expanding member on the bottom sealing plate. When the user needs to adjust the immersion length of the cable inside the detection box, the expanding member on the bottom sealing plate can increase the actual immersion length of the cable by expanding and guiding the cable. After the expanding member on the bottom sealing plate completes the maximum expansion of the cable, the folding and guiding member can cooperate with the expanding member disposed on the top plate to perform secondary expansion adjustment on the cable to be detected, realizing the ability to quickly and flexibly adjust the immersion length of the detected cable according to the actual detection situation through the provided members, making the device more flexible and efficient during detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art.

[0022] Figure 1 It is a schematic structural diagram of the overall on-line detection device for cable insulation resistance of the present invention.

[0023] Figure 2 It is of the present invention Figure 1 Enlarged view of part A.

[0024] Figure 3 It is a side view of the detection box of the present invention with a side cut.

[0025] Figure 4 It is a schematic diagram of the internal structure of the detection box of the present invention with a side cut.

[0026] Figure 5 It is a schematic diagram of the structure of the detection box of the present invention with a top cut.

[0027] Figure 6 It is of the present invention Figure 5 Enlarged view of part B.

[0028] Figure 7 It is a schematic diagram of the structure of the mounting bracket of the present invention with a cut.

[0029] Figure 8 It is of the present invention Figure 7 Enlarged view of part C.

[0030] Figure 9It is a schematic diagram of the installation structure of the double-headed bevel gear shaft of the present invention.

[0031] Figure 10 It is a flowchart of the on-line detection method for the insulation resistance of the cable of the present invention.

[0032] In the figure: 101 - detection box, 102 - guide wheel, 103 - liquid inlet, 104 - bottom sealing plate, 105 - top plate, 201 - installation bracket, 202 - extension bracket, 203 - payout wheel, 204 - guiding rod, 205 - payout lead screw, 206 - driving worm gear, 207 - driving worm, 208 - driving motor, 301 - translation bracket, 302 - folding guide wheel, 303 - translation lead screw, 304 - translation motor, 401 - sliding guide plate, 402 - support member, 403 - double-headed lead screw, 404 - linkage bevel gear, 405 - double-headed bevel gear shaft, 406 - driving shaft, 407 - driving bevel gear, 408 - driving motor, 501 - peripheral bracket, 502 - pushing frame, 503 - tensioning bracket, 504 - tensioning wheel, 505 - pressure sensor, 506 - pushing mechanism. Specific embodiments

[0033] The embodiments of the present invention will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions from beginning to end. The embodiments described below with reference to the drawings are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

[0034] In the description of the present invention, it should be understood that the meaning of "a plurality of" is two or more unless otherwise specifically defined.

[0035] Please refer to Figures 1 to 9, the present invention provides an on-line cable insulation resistance detection device and method, which includes a detection box 101, guide wheels 102, a liquid inlet 103 and a working component. The working component includes a bottom sealing plate 104, a top plate 105, an expansion component, a folding guide component and an adjustment component. The expansion component includes a mounting bracket 201, an extension bracket 202, an extending wheel 203, a guiding rod 204 and a driving component. The folding guide component includes a translation bracket 301, a folding guide wheel 302, a translation screw rod 303 and a translation motor 304. The adjustment component includes a sliding guide plate 401, a support 402, a double-headed screw rod 403 and a synchronization component. The driving component includes an extending screw rod 205, a driving worm gear 206, a driving worm 207 and a driving motor 208. The synchronization component includes a linkage bevel gear 404, a double-headed bevel gear shaft 405, a driving shaft 406, a driving bevel gear 407 and a driving motor 408. Through the foregoing solution, the problem that when the existing cable insulation resistance detection device detects a cable immersed in water, in order to obtain more detailed and accurate data, it is usually necessary to adjust the length of the cable immersed in water according to the actual detection requirements. However, when the existing detection device adjusts the length of the cable to be detected, most of them need to be manually adjusted, making the entire adjustment process very inconvenient and greatly affecting the detection flexibility of the overall device is solved.

[0036] Further, the two guide wheels 102 are respectively at the inlet and outlet of the detection box 101. The liquid inlet 103 is fixedly installed on one side of the detection box 101. The bottom sealing plate 104 is slidably installed below the interior of the detection box 101. The top plate 105 is slidably installed above the interior of the detection box 101. Two groups of the expansion components are respectively installed above the bottom sealing plate 104 and below the top plate 105 for guiding and extending the cable entering the detection box 101. The folding guide component is installed in the detection box 101 for guiding the cable. The adjustment component is connected to the detection box 101 for correspondingly adjusting and driving the bottom sealing plate 104 and the top plate 105.

[0037] Specifically, guiding channels for cable entry and exit are respectively arranged on the front and rear sides of the detection box 101. The two guide wheels 102 are respectively arranged in the two guiding channels. The shape and size of the bottom sealing plate 104 are adapted to the inner bottom groove of the detection box 101. By changing the height of the bottom sealing plate 104 in the inner bottom groove of the detection box 101, the liquid level height of the liquid entering the detection box 101 can be adjusted. The liquid inlet 103 is arranged at the top of the inner groove of the detection box 101 so that the user can introduce the liquid into the detection box 101 through the provided liquid inlet 103.

[0038] The top plate 105 is slidably arranged on the top of the detection box 101 through four guide posts arranged on the top. Corresponding expansion members are arranged on the bottom surface of the top plate 105 and the top surface of the bottom sealing plate 104. A corresponding temperature control mechanism is also arranged on the side of the top surface of the bottom sealing plate 104 to facilitate the temperature control of the liquid inside the detection box 101. The temperature control mechanism is mainly composed of a heating plate structure for controlling temperature and a sensing structure for sensing the water temperature, which is convenient for users to control the liquid temperature inside the detection box 101;

[0039] During actual operation, the cable to be detected enters the detection box 101 through the guide wheel 102 arranged at the feed port of the detection box 101. The cable entering the detection box 101 is guided by the expansion member arranged on the bottom sealing plate 104, and then is led out through the guide wheel 102 arranged at the discharge port of the detection box 101. The bottom sealing plate 104 supports and blocks the liquid introduced from the liquid inlet 103, so that the liquid level inside the detection box 101 can submerge the cable guided by the expansion member on the bottom sealing plate 104. When the user needs to adjust the immersion length of the cable in the detection box 101, the expansion member on the bottom sealing plate 104 can increase the actual immersion length of the cable by expanding and guiding the cable. After the expansion member on the bottom sealing plate 104 completes the maximum expansion of the cable, the folding guide member can cooperate with the expansion member arranged on the top plate 105 to perform secondary expansion adjustment on the cable to be detected, realizing the ability to quickly and flexibly adjust the immersion length of the detection cable according to the actual detection situation through the provided components, making the device more flexible and efficient during detection.

[0040] Further, two installation brackets 201 are fixedly installed above the bottom sealing plate 104 and below the top plate 105; a stretching bracket 202 is slidably installed on each installation bracket 201; a payout wheel 203 is rotatably installed at the end of the stretching bracket 202; guiding rods 204 are installed on both the front and rear sides of the installation bracket 201; the driving component is connected to the installation bracket 201 for correspondingly driving the stretching bracket 202.

[0041] Further, the payout lead screw 205 is threadedly connected to the stretching bracket 202 and is rotatably installed inside the installation bracket 201; the driving worm gear 206 is fixedly installed on one side of the payout lead screw 205; the driving worm 207 meshes with the driving worm gear 206 and is rotatably installed inside the installation bracket 201; the output shaft of the driving motor 208 is connected to the driving worm 207, and the driving motor 208 is fixedly installed inside the installation bracket 201.

[0042] When this embodiment is in use, the mounting brackets 201 are fixed to both sides of the bottom surface of the top plate 105 and both sides of the top surface of the bottom sealing plate 104. A plurality of the extension brackets 202 are alternately arranged between the two mounting brackets 201 provided on the top plate 105 and the bottom sealing plate 104. The expenditure wheels 203 are rotatably mounted at the ends of each of the extension brackets 202. At the same time, the corresponding guide rods 204 are provided on the front and rear sides of the two mounting brackets 201. The guide rods 204 provided can guide the cable entering the detection box 101, so that the cable is soaked and matched with the liquid loaded inside the detection box 101;

[0043] The guide rod 204 mainly consists of a guide wheel in the middle and two limit guide columns on the sides of the guide wheel. The guide wheel in the middle can guide the normal transmission of the cable, and the two limit guide columns provided on the sides of the guide wheel can be used to limit the left and right sides of the cable after transmission, so as to cooperate with the extension brackets 202 and the expenditure wheels 203 provided to conduct subsequent expansion guidance on the cable;

[0044] Each of the extension brackets 202 is correspondingly driven by an expenditure lead screw 205. The drive worms 206 are fixed to the ends of the plurality of expenditure lead screws 205 provided on each mounting bracket 201. The drive worms 206 installed in the same mounting bracket 201 are driven by the drive worm 207 provided inside the mounting bracket 201. The drive worm 207 mainly consists of a drive part and a transmission part. The drive part is provided with a thread for cooperating with the drive worm 206, and the transmission part is a normal cylinder. A plurality of drive parts are provided on the drive worm 207 provided on each mounting bracket 201, so as to be able to synchronously drive the plurality of drive worms 206 provided inside the mounting bracket 201. The drive worm 207 is driven by the drive motor 208 provided. A set of independent drive motors 208 and their drive structures are provided inside each mounting bracket 201, so as to be able to correspondingly drive the plurality of extension brackets 202 provided on the mounting bracket 201;

[0045] During actual operation, the cable entering the detection box 101 will first be guided by the guide rod 204 provided on the specified side of the mounting bracket 201, and then guided by the guide rod 204 on the other side of the mounting bracket 201 to the guide wheel 102 provided at the discharge port of the detection box 101. The cable between the two guide rods 204 can be expanded and guided by the plurality of extension brackets 202 provided on the opposite sides of the two mounting brackets 201 in cooperation with the expenditure wheels 203;

[0046] The extension bracket 202 provided on the mounting bracket 201 is moved by the corresponding driving motor 208 and the driving mechanism, and then the expenditure wheels 203 provided at the end of the extension bracket 202 are used to alternately expand the cable, thereby increasing the guiding length of the cable. The working principles of the expansion members provided on the bottom sealing plate 104 and the top plate 105 are the same. When making minor length adjustments, only the mechanism provided on the bottom sealing plate 104 can be used for adjustment. At this time, the height of the bottom sealing plate 104 can submerge the surface of the cable guided on the bottom sealing plate 104 with the introduced liquid;

[0047] When a larger range of immersion length adjustment is required, the user needs to first perform secondary cooperative guiding of the cable introduced into the detection box 101 through the folding guiding member, and then the top plate 105 and the bottom sealing plate 104 will synchronously move downward under the action of the adjustment member. After the top plate 105 moves downward, the mounting bracket 201 provided at the bottom of the top plate 105 and the guiding rod member 204 provided on the mounting bracket 201 will cooperate with the cable until the top plate 105 moves to the original position of the bottom sealing plate 104. After that, the cable guided at the bottom of the top plate 105 is expanded and guided according to the expansion guiding principle above the bottom sealing plate 104, so that a larger range of adjustment can be made to the immersed cable in a limited space;

[0048] It should be noted that since the bottom sealing plate 104 will also move downward after the top plate 105 moves downward, the user needs to add a corresponding volume of liquid according to the final downward movement position of the bottom sealing plate 104 to ensure that the liquid can fully cooperate with the cable inside the detection box 101.

[0049] Furthermore, the translation bracket 301 is slidably installed inside the detection box 101; the folding guide wheel 302 is rotatably installed on the translation bracket 301; the translation lead screw 303 is threadedly connected to the translation bracket 301 and is rotatably installed inside the detection box 101; the output shaft of the translation motor 304 is connected to the translation lead screw 303, and the translation motor 304 is fixedly installed on one side of the detection box 101.

[0050] When this embodiment is in use, the corresponding guide grooves provided on both sides of the translation bracket 301 cooperate with the tracks inside the detection box 101. The side plate member of the translation bracket 301 is provided with a threaded hole matching the translation lead screw 303. The translation lead screw 303 is driven by the translation motor 304. In this way, the user can drive the translation bracket 301 through the translation motor 304 and the translation lead screw 303. The folding guide wheel 302 is provided at the middle end of the translation bracket 301;

[0051] When the user does not adjust the cable immersion length through the components on the top plate 105, the translation bracket 301 is located on the side close to the feeding port of the detection box 101. When the user needs to adjust the cable immersion length through the components on the top plate 105, the translation bracket 301 can move towards the side of the discharging port of the detection box 101 under the action of the translation motor 304 and the translation lead screw 303;

[0052] As the translation bracket 301 moves, the folding guide pulley 302 provided on the translation bracket 301 will guide the cable entering the bottom sealing plate 104 to fold over from above the bottom sealing plate 104, so that the cable is directly guided by the guide pulley 102 provided on the feeding port of the detection box 101 to move to the other folding guide pulley 302, and then is turned to the guide rod 204 provided on the side of the bottom sealing plate 104 close to the feeding port of the detection box 101 through the folding guide pulley 302;

[0053] After the translation bracket 301 and the folding guide pulley 302 complete the movement, the top plate 105 and the bottom sealing plate 104 can move on the adjusting components to complete the subsequent secondary adjustment.

[0054] Further, sliding guide plates 401 are slidably installed on both the upper and lower sides inside the detection box 101; the sliding guide plate 401 slidably provided at the top of the detection box 101 is connected to the top plate 105 through a support member 402. One side of the support member 402 is rotatably connected to the sliding guide plate 401, and the other side of the support member 402 is rotatably connected to the top plate 105; the sliding guide plate 401 slidably provided at the bottom of the detection box 101 is connected to the bottom sealing plate 104 through a support member 402. One side of the support member 402 is rotatably connected to the sliding guide plate 401, and the other side of the support member 402 is rotatably connected to the bottom sealing plate 104; two double-headed lead screws 403 are respectively connected to the sliding guide plates 401 provided on the upper and lower sides of the detection box 101. The sliding guide plate 401 is threadedly connected to the corresponding double-headed lead screw 403. The double-headed lead screws 403 are respectively rotatably installed on the upper and lower sides inside the detection box 101; the synchronization member is connected to the detection box 101 and is used for synchronously driving the double-headed lead screws 403 provided on the upper and lower sides inside the detection box 101 correspondingly.

[0055] Further, on both of the two double-headed lead screws 403, there is fixedly sleeved with the linkage bevel gear 404; on both sides of the double-headed bevel gear shaft 405, there are corresponding bevel gears provided. The two double-headed bevel gear shafts 405 are respectively rotatably installed on the upper and lower sides of the detection box 101. The bevel gears of the double-headed bevel gear shaft 405 arranged inside the detection box 101 are meshed with the correspondingly arranged linkage bevel gears 404; the driving shaft 406 is rotatably installed outside the detection box 101; the two driving bevel gears 407 are respectively meshed with the bevel gears of the two double-headed bevel gear shafts 405 arranged outside the detection box 101, and the driving bevel gears 407 are fixedly sleeved on the driving shaft 406; the output shaft of the driving motor 408 is connected to the driving shaft 406, and the driving motor 408 is fixedly installed on one side of the detection box 101.

[0056] When in use in this embodiment, on the top wall and the bottom wall of the detection box 101, there are provided two of the sliding guide plates 401. The sliding guide plates 401 cooperate with the guiding bosses provided inside the detection box 101. The two sliding guide plates 401 on the corresponding side of the detection box 101 are driven by the provided double-headed lead screw 403. The thread directions on both sides of the double-headed lead screw 403 are opposite. When the double-headed lead screw 403 rotates, the two sliding guide plates 401 that cooperate with the threads on both sides of the double-headed lead screw 403 will move correspondingly relative to each other, and then cooperate with the support members 402 provided on the sliding guide plates 401 to complete the driving of the corresponding plate members.

[0057] The driving structural principles of the top plate 105 and the bottom sealing plate 104 are the same, but the states of the sliding guide plates 401 on the upper and lower sides inside the detection box 101 are opposite. When the two sliding guide plates 401 on the top of the detection box 101 are in a state of being close to each other, the two sliding guide plates 401 at the bottom of the detection box 101 are in a state of being unfolded. In this way, the synchronous up and down movement of the top plate 105 and the bottom sealing plate 104 can be completed by synchronously driving the two double-headed lead screws 403 in opposite directions.

[0058] Adopting the above method to realize the synchronous driving of the top plate 105 and the bottom sealing plate 104 can ensure that there is a gap between the top plate 105 and the bottom sealing plate 104, thereby avoiding interference with the movement of the translation bracket 301.

[0059] A linkage bevel gear 404 is fixedly sleeved on the middle ends of the two double-headed lead screws 403. The upper and lower linkage bevel gears 404 are respectively engaged with the double-headed bevel gear shafts 405 arranged on the upper and lower sides of the detection box 101. The double-headed bevel gear shafts 405 are engaged with the driving bevel gears 407 fixedly arranged on the driving shaft 406. The two driving bevel gears 407 arranged on the driving shaft 406 have opposite driving directions, so as to synchronously and reversely drive the two double-headed bevel gear shafts 405, and further realize the synchronous and reverse driving of the two double-headed lead screws 403.

[0060] Preferably, the working component provided by the present invention further includes an external support 501, a pushing frame 502, a tensioning support 503, a tensioning wheel 504, a pressure sensor 505 and a pushing mechanism 506.

[0061] Furthermore, the external support 501 is fixedly installed on one side of the feeding port of the detection box 101; the pushing frame 502 is slidably installed on the external support 501; the tensioning support 503 is connected to the pushing frame 502; the tensioning wheel 504 is rotatably installed on one side of the tensioning support 503; the pressure sensor 505 is installed on the side of the pushing frame 502 close to the tensioning support 503; the pushing mechanism 506 is connected to the external support 501 and is used to drive the pushing frame 502.

[0062] During the use of this embodiment, the external support 501 is arranged in the feeding direction of the detection box 101. The pushing frame 502 is slidably installed on the external support 501. A guide groove for connecting the tensioning support 503 is arranged on the pushing frame 502. The tensioning wheel 504 is rotatably installed at the end of the tensioning support 503. The pressure sensor 505 is arranged at the position where the tensioning support 503 cooperates with the pushing frame 502. The pressure between the pushing frame 502 and the tensioning support 503 can be detected through the pressure sensor 505. The pushing frame 502 is driven by the pushing mechanism 506. The pushing mechanism 506 is composed of a corresponding lead screw and a motor, and the pushing frame 502 is driven by the cooperation of the lead screw and the threaded hole arranged on the pushing frame 502.

[0063] During the actual working process, the cable is guided by the tensioning wheel 504 and cooperates with the guiding wheel 102 provided at the feeding port of the detection box 101. Then, the tension change of the cable during the guiding process can be changed through the position change of the tensioning wheel 504, and the tension sensor 505 can also detect the tension force generated by the tensioning wheel 504 in real time. As for the position of the tensioning wheel 504, it can be adjusted by the sliding of the pushing frame 502 on the peripheral support 501. In this way, when the user adjusts the immersion length of the cable, the cable tension during the adjustment process can be adjusted through the above components, so as to facilitate the more stable and safe transmission of the cable.

[0064] Please refer to Figure 10 , a method for on-line detection of cable insulation resistance, using the on-line detection device for cable insulation resistance described above, including the following steps:

[0065] S1: The cable to be detected enters the interior of the detection box 101 through the guiding wheel 102 provided at the feeding port of the detection box 101;

[0066] S2: The cable entering the interior of the detection box 101 is guided by the expansion member provided on the bottom sealing plate 104, and then is led out through the guiding wheel 102 provided at the discharging port of the detection box 101;

[0067] S3: The liquid introduced from the liquid inlet 103 is supported and blocked by the bottom sealing plate 104, so that the liquid level height inside the detection box 101 can submerge the cable guided by the expansion member on the bottom sealing plate 104;

[0068] S4: When the user needs to adjust the immersion length of the cable in the detection box 101, the expansion member on the bottom sealing plate 104 can increase the actual immersion length of the cable by expanding and guiding the cable;

[0069] S5: After the expansion member on the bottom sealing plate 104 completes the maximum expansion of the cable, the folding and guiding member can cooperate with the expansion member provided on the top plate 105 to perform secondary expansion adjustment on the cable to be detected.

[0070] The above-disclosed are only one or more preferred embodiments of the present application, and the scope of rights of the present application cannot be limited thereby. Those of ordinary skill in the art can understand all or part of the processes of implementing the above embodiments, and the equivalent changes made according to the claims of the present application still fall within the scope covered by the present application.

Claims

1. An on-line cable insulation resistance detection device, comprising a detection box, guide wheels and a liquid inlet. The two guide wheels are respectively located at the feed inlet and the discharge outlet of the detection box. The liquid inlet is fixedly installed on one side of the detection box. It is characterized in that, It further comprises a working component; The working component includes a bottom sealing plate, a top plate, an expansion component, a folding guide component and an adjustment component; The bottom sealing plate is slidably installed below the interior of the detection box, and the top plate is slidably installed above the interior of the detection box. Two groups of the expansion components are respectively installed above the bottom sealing plate and below the top plate, and are used for guiding and extending the cable entering the detection box. The folding guide component is installed in the detection box and is used for guiding the cable. The adjustment component is connected to the detection box and is used for correspondingly adjusting and driving the bottom sealing plate and the top plate.

2. The on-line cable insulation resistance detection device according to claim 1, characterized in that, The expansion component includes a mounting bracket, an extension bracket, a protruding wheel, a guiding rod and a driving component. Two of the mounting brackets are fixedly installed above the bottom sealing plate and below the top plate respectively; the extension bracket is slidably installed on each mounting bracket; the protruding wheel is rotatably installed at the end of the extension bracket; the guiding rods are installed on the front and rear sides of the mounting bracket; the driving component is connected to the mounting bracket and is used for correspondingly driving the extension bracket.

3. The on-line cable insulation resistance detection device according to claim 1, characterized in that, The folding guide component includes a translation bracket, a folding guide wheel, a translation lead screw and a translation motor. The translation bracket is slidably installed inside the detection box; the folding guide wheel is rotatably installed on the translation bracket; the translation lead screw is threadedly connected to the translation bracket and is rotatably installed inside the detection box; the output shaft of the translation motor is connected to the translation lead screw, and the translation motor is fixedly installed on one side of the detection box.

4. The on-line cable insulation resistance detection device according to claim 1, characterized in that, The adjustment component includes a sliding guide plate, a support member, a double-headed lead screw and a synchronization component. The sliding guide plates are slidably installed on the upper and lower sides inside the detection box; the sliding guide plate slidably arranged at the top of the detection box is connected to the top plate through the support member. One side of the support member is rotatably connected to the sliding guide plate, and the other side of the support member is rotatably connected to the top plate; the sliding guide plate slidably arranged at the bottom of the detection box is connected to the bottom sealing plate through the support member. One side of the support member is rotatably connected to the sliding guide plate, and the other side of the support member is rotatably connected to the bottom sealing plate; the two double-headed lead screws are respectively connected to the sliding guide plates arranged on the upper and lower sides of the detection box. The sliding guide plate is threadedly connected to the corresponding double-headed lead screw, and the double-headed lead screws are respectively rotatably installed on the upper and lower sides inside the detection box; the synchronization component is connected to the detection box and is used for synchronously and correspondingly driving the double-headed lead screws arranged on the upper and lower sides inside the detection box.

5. The on-line cable insulation resistance detection device according to claim 2, characterized in that the driving member includes an extending screw rod, a driving worm gear, a driving worm and a driving motor. The extending screw rod is in threaded connection with the extending bracket and is rotatably installed in the mounting bracket; the driving worm gear is fixedly installed on one side of the extending screw rod; the driving worm is engaged with the driving worm gear and is rotatably installed in the mounting bracket; the output shaft of the driving motor is connected to the driving worm, and the driving motor is fixedly installed in the mounting bracket.

6. The on-line cable insulation resistance detection device according to claim 4, characterized in that the synchronizing member includes a linkage bevel gear, a double-headed bevel gear shaft, a driving shaft, a driving bevel gear and a driving motor. The linkage bevel gears are fixedly sleeved on both of the double-headed screw rods; corresponding bevel gears are arranged on both sides of the double-headed bevel gear shaft, and the two double-headed bevel gear shafts are respectively rotatably installed on the upper and lower sides of the detection box. The bevel gears of the double-headed bevel gear shaft arranged inside the detection box are engaged with the corresponding linkage bevel gears; the driving shaft is rotatably installed outside the detection box; the two driving bevel gears are respectively engaged with the bevel gears of the two double-headed bevel gear shafts arranged outside the detection box, and the driving bevel gears are fixedly sleeved on the driving shaft; the output shaft of the driving motor is connected to the driving shaft, and the driving motor is fixedly installed on one side of the detection box.

7. The on-line cable insulation resistance detection device according to claim 1, characterized in that the working assembly further includes an external support, a pushing frame, a tensioning support, a tensioning wheel, a pressure sensor and a pushing mechanism. The external support is fixedly installed on one side of the feed port of the detection box; the pushing frame is slidably installed on the external support; the tensioning support is connected to the pushing frame; the tensioning wheel is rotatably installed on one side of the tensioning support; the pressure sensor is installed on the side of the pushing frame close to the tensioning support; the pushing mechanism is connected to the external support and is used for driving the pushing frame.

8. An on-line detection method for cable insulation resistance, which uses the on-line detection device for cable insulation resistance as described in claim 1, is characterized in that, comprising the following steps the cable to be detected enters the interior of the detection box through the guide wheel arranged at the feed port of the detection box; the cable entering the interior of the detection box is guided by the expansion member arranged on the bottom sealing plate, and then is led out through the guide wheel arranged at the discharge port of the detection box; the liquid introduced from the liquid inlet is supported and blocked by the bottom sealing plate, so that the liquid level height inside the detection box can submerge the cable guided by the expansion member on the bottom sealing plate; when the user needs to adjust the immersion length of the cable in the detection box, the expansion member on the bottom sealing plate can increase the actual immersion length of the cable by expanding and guiding the cable; after the expansion member on the bottom sealing plate completes the maximum expansion of the cable, the folding guide member can cooperate with the expansion member arranged on the top plate to perform secondary expansion adjustment on the cable to be detected.

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