Multifunctional wireless insulation resistance tester and test method thereof

Abstract

The invention provides a multifunctional wireless insulation resistance tester and a test method thereof, the multifunctional wireless insulation resistance tester comprises a detection module, the bottom of the detection module is provided with a protective shell, the protective shell comprises a bottom shell and a top shell, the detection module is fixedly connected to the top shell, and the protective shell is internally provided with a storage cavity and an accommodating cavity. The device has the capability of automatically measuring the phase line of the cable and discharging, the diversity of the detection device is enhanced, a detector does not need to carry out tedious operation, the situation of inaccurate detection data caused by misoperation of the detector is avoided, the detector can detect the cable in a long distance, and the detection efficiency is improved. And detection data is taken out through the data terminal, so that the safety of detection personnel is improved, the convenience of data detection is also improved, the detector can be remotely controlled without an extension cord, and the condition that the extension cord is curled and wound is avoided.

Description

Technical Field

[0001] The invention relates to the technical field of cable detection equipment, in particular to a multifunctional wireless insulation resistance tester and a testing method thereof. Background Art

[0002] At present, there are many test items for electrical equipment in the power system, one of which is to test the insulation resistance of electrical equipment. The test instrument for insulation resistance is a megohmmeter. The voltage level of the megohmmeter varies according to the voltage level of the tested electrical equipment. Common voltage levels of megohmmeters are 500V, 2500V, 5000V, etc. Its main function is to detect the insulation capacity of cables or electrical appliances in the power system to avoid accidents such as electric shock casualties and equipment damage. The method for testing the insulation resistance of the cable is as follows: completely cut off the power to the cable and remove the external connection; wear personal protective equipment and ensure that the detector functions normally; ground the discharge rod and discharge the three-phase lines in turn, install the grounding wire on the bracket that fixes the cable, and then install the grounding wire on the three-phase line; connect the G terminal of the detector to the ground wire, and the discharge rod, three-phase line, and ground wire of the detector are not connected to the same ground electrode; remove the ground wire of the first phase line, connect the L terminal of the detector to the connector, start the detection equipment, record the detected value, disconnect the L terminal from the phase line after recording, and discharge the phase line with the discharge rod, reconnect the ground wire to the connector of the phase line after discharge, and then detect the remaining phase lines in turn; remove the ground wire after detection and restore the connection.

[0003] There are still the following problems when performing insulation testing on cables:

[0004] 1. When testing a single phase line, you need to first remove the ground wire on the phase line, connect the L terminal of the detector to the connector of the phase line, connect the e terminal to the ground wire, and use the detector to test the insulation resistance of the single-phase line. After the test, you need to use a discharge rod to discharge it, and finally reconnect the ground wire, and then test the remaining phase lines in turn. The steps are not only cumbersome, but also require manual connection of the detector to the phase line. After the test, you need to hold the discharge rod to discharge the phase line and reconnect the ground wire, so that the detector can only perform insulation resistance testing. It has a single functionality and cannot realize multiple functions. It is not convenient for testers to use. At the same time, the cumbersome and identical connection steps may cause the testers to miss a step, thereby affecting the accuracy of data measurement.

[0005] 2. The length of the detector cable is limited, so the inspectors need to inspect the high-voltage cables at a close distance, which is not conducive to the safety of the inspectors. Although the length of the detector cable can be increased to improve the safety of the inspectors, the cable will undoubtedly become entangled and curled, which is not convenient for the inspectors to use, and it will increase the time for cable retraction and release, thereby extending the detection time.

[0006] 3. During testing, the cables are fixed on cable brackets, but the cable brackets can only support the cables and do not have a structure to fix the separated three-phase lines. When testing the phase lines, the phase lines will swing back and forth due to shaking. If they touch other phase lines or equipment, it will affect the accuracy of the test data and is not conducive to the safety of the testers.

[0007] A Chinese patent with the authorization publication number CN116593783A discloses a high-voltage cable insulation resistance detection device and detection method, including a stabilizing mechanism fixedly mounted on the surface of the detection body, wherein a plurality of sets of elastic contact pieces are fixedly mounted at equal intervals on the inner wall of the outer shell; an extrusion mechanism, wherein the extrusion mechanism includes a connecting rod symmetrically mounted on the bottom surface of the outer shell, wherein one end of the connecting rod penetrates through a limit plate and is connected to a trapezoidal block; and a detection mechanism, wherein the detection mechanism includes an inner shell slidably connected to the inside of the outer shell and having a notch at one end. The problem solved by this device is that when performing cable insulation resistance detection, the chuck needs to be replaced frequently. By adjusting the position of the lever, the three sets of wire cores of the high-voltage cable can be clamped and detected in pairs. However, this device still requires manual memory to control the position of the lever and adjust it in sequence. Summary of the invention

[0008] In view of the above situation, in order to overcome the defects of the prior art, the present invention provides a multifunctional wireless insulation resistance tester and a testing method thereof to solve the problems raised in the above background technology.

[0009] The technical solution is that the present invention comprises a detection module, a protective shell is provided at the bottom of the detection module, the protective shell comprises a bottom shell and a top shell, the detection module is fixedly connected to the top shell, and a storage cavity and a receiving cavity are provided inside the protective shell;

[0010] A grounding plate is fixedly connected to the bottom of the accommodating cavity, a grounding wire extending out of the protective housing is fixedly connected to one end of the grounding plate, a plurality of contact plates are rotatably connected to the grounding plate, the plurality of contact plates are axially arrayed on the grounding plate, a spring is fixedly connected between the contact plate and the grounding plate, a conductive copper plate is arranged in the accommodating cavity, and an open groove for accommodating the contact plate is opened at one end of the conductive copper plate;

[0011] A threaded rod is rotatably connected in the accommodating cavity, a movable platform is threadedly connected to the outer wall of the threaded rod, the top of the movable platform is fixedly connected to an insulating pad, a connecting component, a measuring component and a discharging component are fixedly connected to the top of the insulating pad, the discharging component is located on a side close to the accommodating cavity, the connecting component includes a conductive slide plate, a T-shaped support frame and a measuring panel and a discharging panel fixedly connected to both sides of the support frame, the measuring panel is arranged toward the measuring component, the measuring component includes a measuring connecting line fixedly connected to the measuring panel, the discharging component includes a discharging connecting line fixedly connected to the discharging panel, and a double-bevel conductive block capable of contacting the measuring component and the discharging component is fixedly connected to the top of the conductive copper plate;

[0012] A strip bracket is fixedly connected to the top of the accommodating cavity, a measuring strip plate and a discharging strip plate are fixedly connected inside the strip bracket, the conductive slide plate and the measuring strip plate are slidably connected to the discharging strip plate, a measuring incoming line is fixedly connected between the measuring strip plate and the L end of the detection module, and one end of the discharging strip plate is fixedly connected to a discharging grounding line extending out of the protective shell.

[0013] Furthermore, the measuring panel and the discharge panel are fixedly connected with a boss at the top of one side away from the T-shaped support frame, the conductive slide plate is located at the upper and lower ends of the boss, a spring is fixedly connected between the conductive slide plate and the boss, and the T-shaped support frame is made of non-conductive material.

[0014] Furthermore, the discharge assembly further comprises a spline column fixedly connected to one end of the discharge connection line, the outer wall of the spline column away from one end of the discharge connection line is slidably connected to a discharge joint, the discharge joint is provided with a double bevel that is in sliding contact with the double bevel conductive block, the outer wall of the discharge connection line is fixedly connected to an insulating bracket, and the insulating bracket is fixed on an insulating pad;

[0015] The discharge joint forms a conductive channel with an external grounding electrode through a spline column, a discharge connecting line, a discharge panel, a spring, a conductive slide plate, a discharge strip plate, and a discharge grounding line.

[0016] Furthermore, the measuring assembly also includes a spline column fixedly connected to one end of the measuring connecting line, and the outer wall of the other end of the spline is slidably connected to a measuring connector, and the measuring connector is provided with a double bevel that is in sliding contact with the double bevel conductive block;

[0017] The measuring joint forms a conductive channel with the L end on the detection module through the spline column, the measuring connecting line, the measuring panel, the spring, the conductive slide plate, the measuring strip plate, the measuring incoming line, and the grounding end of the detection module is fixedly connected with the measuring grounding line.

[0018] Furthermore, an insulating box is fixedly connected to the outer wall of one end of the spline column, and a spring is sleeved on the outside of the spline column. The spring is arranged between the insulating box and the measuring joint and the discharging joint.

[0019] Furthermore, the bottom end of the mobile platform is fixedly connected with a folding plate, the top two sides of the contact plate are fixedly connected with inclined folding edges that can slidably contact with the folding plate, one end of the mobile platform is fixedly connected with a slider, the side wall of the accommodating cavity is fixedly connected with a slide rail, and the slider is slidably connected to the slide rail;

[0020] A motor and a power source are fixedly connected inside the storage cavity, an output end of the motor is fixedly connected to the threaded rod, the power source is connected to the detection module and the power supply terminal of the motor, and a wireless communication module is installed on the detection module.

[0021] Furthermore, the outer walls of the conductive copper plate and the double-bevel conductive block are fixedly connected with an insulating fixing frame, one end of the conductive copper plate is fixedly connected with a connecting wire extending out of the protective shell, one end of the connecting wire close to the conductive copper plate is sleeved with a rubber bracket, the connecting wire is fixedly connected to the side wall of the protective shell through the rubber bracket, the outer wall of the connecting wire is fixedly connected with a rubber sleeve, and one end of the rubber sleeve is fixedly connected to the protective shell;

[0022] An end of the connecting wire away from the conductive copper plate is fixedly connected with an alligator clip, and the alligator clip is clamped on a crimping terminal of a phase line at one end of the cable.

[0023] Furthermore, a cable bracket is provided on the outside of the protective shell, and the cable bracket includes a semi-arc support plate and a fan-shaped plate, a cable is placed on the top of the semi-arc support plate, a through groove is opened on the semi-arc support plate, a fixing belt is fixedly connected in the through groove on one side of the semi-arc support plate, and a rotating clamp is fixedly connected to the bottom of the through groove on the other side of the semi-arc support plate, the rotating clamp includes a fixed clamp and a movable clamp rotatably connected to the fixed clamp, the movable clamp is fixedly connected to the fixed clamp by bolts, and toothed plates are symmetrically fixedly connected to the facing surfaces of the fixed clamp and the movable clamp, and one end of the fixing belt is located in the symmetrical toothed plates.

[0024] Further, the fan-shaped plate is fixedly connected to the bottom of the semi-arc support plate, the bottom of one end of the fan-shaped plate close to the phase line is fixedly connected to a mounting frame, a telescopic rod is fixedly connected inside the mounting frame, a supporting claw is fixedly connected to the extended end of the telescopic rod, and the phase line is placed on the top of the supporting claw;

[0025] Support feet are fixedly connected to both sides of the sector plate and the semi-arc support plate.

[0026] Furthermore, the testing method of the tester comprises the following steps:

[0027] Step 1: Wear personal protective equipment and ensure that the device and the discharge rod of the present invention function normally. Completely power off the cable to be tested, remove the external connection, connect the cable bracket to the ground electrode through the connecting wire, use the discharge rod to discharge the three-phase line in sequence, place the cable on the cable bracket after discharge, and fix the cable with a fixing belt;

[0028] Step 2: Place the three-phase wires separated from the cable on the supporting claws on the cable bracket, connect the grounding wire, discharge grounding wire and measurement grounding wire of the equipment to different ground electrodes in turn to prevent current backflow during the test, and clamp the three connecting wires on the wiring terminals of the phase wires in turn through alligator clips. At this time, the detection module can be directly controlled or remotely wirelessly controlled. After the detection module is started, the three-phase wires will be tested in turn;

[0029] Step 3. During the test, the data will be directly displayed on the detection module and will also be transmitted to the data terminal through the wireless communication module. The detection data can be obtained from the data terminal. After the test, first use the discharge rod to discharge the three-phase line, then remove the crocodile clip on the phase line, remove the grounding wire, discharge grounding wire and measurement grounding wire fixed on different ground electrodes, then remove the cable from the cable bracket, and finally remove the connecting wire between the cable bracket and the ground electrode to complete the test.

[0030] Compared with the existing known technologies, the technical solution provided by the present invention has the following significant effects:

[0031] 1. Through the coordinated arrangement of the motor, threaded rod, mobile platform, measuring component and discharge component, the motor can drive the mobile platform to move. When the mobile platform moves, the connection between the phase line and the ground electrode can be disconnected. At the same time, the measuring component on the top can first measure the insulation resistance of the phase line, disconnect it after measurement, and then lead the current in the cable through the discharge component, and then measure the next phase line. It has the ability to automatically measure and discharge the phase line of the cable, which enhances the diversity of the detection device, eliminates the need for detection personnel to perform cumbersome operations, and avoids the situation where the detection data is inaccurate due to operational errors of the detection personnel.

[0032] 2. By setting up a wireless communication module on the detection module, the detection personnel can detect the cables at a long distance and retrieve the detection data through the data terminal, which improves the safety of the detection personnel and increases the convenience of data inspection. The detector can be remotely controlled without the need for an extension cord, avoiding the situation where the extension cord will curl and tangle.

[0033] 3. The telescopic rod and supporting claws on the cable bracket can support the phase line on the cable, avoiding the shaking of the cable due to vibration, increasing the safety during cable detection. At the same time, the telescopic rod can be extended and retracted to adapt to phase lines of different lengths, increasing the versatility of the equipment. BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Figure 1 It is a three-dimensional schematic diagram of the present invention.

[0035] Figure 2 It is a three-dimensional schematic diagram of the connection structure between the protective shell and the rubber sleeve in the present invention.

[0036] Figure 3 It is a three-dimensional schematic diagram of the connection structure between the storage cavity and the accommodating cavity in the present invention.

[0037] Figure 4 It is a three-dimensional schematic diagram of the connection structure between the ground plate and the contact plate in the present invention.

[0038] Figure 5 It is a partial three-dimensional cross-sectional schematic diagram of the connection structure between the ground plate and the ground wire in the present invention.

[0039] Figure 6 It is a three-dimensional cross-sectional schematic diagram of the connection structure between the contact plate and the conductive copper plate in the present invention.

[0040] Figure 7 It is a front perspective schematic diagram of the connection structure between the measuring component and the discharge component in the present invention.

[0041] Figure 8 It is a rear perspective schematic diagram of the connection structure between the measuring component and the discharge component in the present invention.

[0042] Fig. 9 It is a three-dimensional schematic diagram of the connection structure between the measuring panel and the measuring connecting line in the present invention.

[0043] Fig.10 It is a three-dimensional schematic diagram of the connection structure between the discharge panel and the discharge connection line in the present invention.

[0044] Fig.11 It is a three-dimensional schematic diagram of the connection structure between the connecting wire and the rubber sleeve in the present invention.

[0045] Fig.12 It is a three-dimensional schematic diagram of the connection structure between the conductive slide plate and the measuring strip plate in the present invention.

[0046] Fig.13 It is a three-dimensional schematic diagram of the cable support of the present invention when cables are placed thereon.

[0047] Fig.14It is a three-dimensional schematic diagram of the cable support in the present invention when no cables are placed.

[0048] Fig.15 It is a three-dimensional schematic diagram of the connection structure between the fixed clamp and the movable clamp in the present invention.

[0049] Explanation of the symbols in the schematic diagram:

[0050] 101. Detection module; 102. Protective shell; 103. Bottom shell; 104. Top shell; 105. Storage cavity; 106. Accommodating cavity; 107. Grounding plate; 108. Grounding wire; 109. Contact plate; 110. Spring; 111. Conductive copper plate; 112. Open slot; 113. Threaded rod; 114. Moving platform; 115. Insulating pad; 116. Connecting assembly; 117. Measuring assembly; 118. Discharging assembly; 119. Conductive slide plate; 120. T-shaped support frame; 121. Measuring panel; 122. Discharging panel; 123. Measuring connecting wire; 124. Discharging connecting wire; 125. Double-bevel conductive block; 126. Strip bracket; 127. Measuring strip plate; 128. Discharging strip plate; 129. Measuring incoming line; 130. Discharging grounding wire; 131 , boss; 132, spline column; 133, discharge connector; 134, insulation bracket; 135, measuring connector; 136, insulation box; 137, folding plate; 138, inclined folding; 139, slider; 140, slide rail; 141, insulation fixing bracket; 142, connecting wire; 143, rubber bracket; 144, rubber sleeve; 145, crocodile clip; 146, cable bracket; 147, semi-arc support plate; 148, fan-shaped plate; 149, through groove; 150, fixing belt; 151, rotating clamp; 152, fixing clamp; 153, movable clamp; 154, bolt; 155, tooth plate; 156, mounting bracket; 157, telescopic rod; 158, supporting claw; 159, supporting foot; 160, motor; 161, power supply; 162, wireless communication module; 163, measuring ground wire. DETAILED DESCRIPTION

[0051] In order to make the purpose, technical scheme and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention, that is, the embodiments described are only part of the embodiments of the present invention, rather than all of the embodiments. The components of the embodiments of the present invention described and shown in the drawings herein can be arranged and designed in various different configurations.

[0052] Depend on Figures 1 to 11It is given, including a detection module 101, the detection module 101 is an electronic megohmmeter, on which an L end and an E end are installed, the L end is connected to the cable, and the E end is used to connect to the ground electrode. The electronic megohmmeter is a mature device and will not be described in detail here. A wireless communication module 162 is installed on the detection module 101, which can transmit the detection data to the data terminal through a wireless signal. At the same time, the detection module 101 can be remotely controlled. A protective shell 102 is provided at the bottom of the detection module 101, and the protective shell 102 includes a bottom shell 103 and a top shell 104. The top shell 104 and the bottom shell 103 can be opened for easy maintenance. The detection module 101 is fixedly connected to the top shell 104, and a storage chamber 105 and an accommodating chamber 106 are provided inside the protective shell 102. The storage chamber 105 is used to store the motor 160 and the power supply 161, and the accommodating chamber 106 is used for the back and forth movement of the mobile platform 114. The initial position of the mobile platform 114 in the accommodating chamber 106 is close to one end of the storage chamber 105.

[0053] refer to Figures 3 to 6 A grounding plate 107 is fixedly connected to the bottom of the accommodating cavity 106. The grounding plate 107 is connected to the external ground electrode through a grounding wire 108. The top of the grounding plate 107 is connected to a conductive copper plate 111 through a contact plate 109 and a spring 110. One end of the grounding plate 107 is fixedly connected to a grounding wire 108 extending out of the protective housing 102. A plurality of contact plates 109 are rotatably connected to the grounding plate 107. The number of contact plates 109 is consistent with the number of phase lines on the cable. Three are shown in the figure. The plurality of contact plates 109 are axially arrayed on the grounding plate 107. A spring 110 is fixedly connected between the plate 109 and the grounding plate 107. The spring 110 is used to push the contact plate 109 to contact the conductive copper plate 111. When the mobile platform 114 moves to the top of the contact plate 109, the mobile platform 114 presses the contact plate 109 down through the folding plate 137 at the bottom, and the spring 110 at the bottom is compressed. The conductive copper plate 111 is arranged in the accommodating cavity 106. An open groove 112 for accommodating the contact plate 109 is opened at one end of the conductive copper plate 111. The open groove 112 can increase the contact area between the conductive copper plate 111 and the contact plate 109.

[0054] refer to Figure 3 to Figure 4A threaded rod 113 is rotatably connected in the accommodating chamber 106, and a movable platform 114 is threadedly connected to the outer wall of the threaded rod 113. One end of the threaded rod 113 is connected to the output end of the motor 160. The motor 160 drives the movable platform 114 to move through the threaded rod 113. The top of the movable platform 114 is fixedly connected to an insulating pad 115. The insulating pad 115 can increase the insulation to prevent the connection component 116, the measuring component 117, and the discharge component 118 from being turned on. The top of the insulating pad 115 is fixedly connected to the connection component 116, the measuring component 117 and the discharge component 118. The discharge component 118 is located on the side close to the accommodating chamber 106. When the movable platform 114 moves toward the end away from the storage chamber 105, the measuring connector 135 on the measuring component 117 will first contact the double-slope conductive block 125. When the measuring component 117 is out of the range of the double-slope conductive block 125, the measuring connector 135 on the measuring component 117 will first contact the double-slope conductive block 125. When the discharge component 118 is connected to the double-slope conductive block 125, the current during the detection is conducted away. The connecting component 116 includes a conductive slide plate 119, a T-shaped support frame 120, and a measuring panel 121 and a discharge panel 122 fixedly connected to both sides of the support frame. The measuring panel 121 is arranged toward the measuring component 117. The measuring component 117 includes a measuring connection line 123 fixedly connected to the measuring panel 121. The discharge component 118 includes a discharge connection line 124 fixedly connected to the discharge panel 122. The measuring panel 121 is connected to the measuring connector 135 through the measuring connection line 123 and the spline column 132. The discharge panel 122 is connected to the discharge connector 133 through the discharge connection line 124 and the spline column 132. The top of the conductive copper plate 111 is fixedly connected with a double-slope conductive block 125 capable of contacting the measuring component 117 and the discharge component 118.

[0055] refer to Fig.12 , a strip bracket 126 is fixedly connected to the top of the accommodating cavity 106, and the strip bracket 126 is used to support the measuring strip plate 127 and the discharging strip plate 128. The measuring strip plate 127 and the discharging strip plate 128 are fixedly connected inside the strip bracket 126, and the conductive slide plate 119 and the measuring strip plate 127 are slidably connected with the discharging strip plate 128. When the connecting component 116 moves, it will drive the conductive slide plates 119 on both sides to slide on the measuring strip plate 127 and the discharging strip plate 128. A measuring incoming line 129 is fixedly connected between the measuring strip plate 127 and the L end of the detection module 101, and the measuring strip plate 127 is connected to the L end of the detection module 101 through the measuring incoming line 129. A resistor is installed inside the discharge grounding wire 130 for resisting and discharging the measured cable, and then the current is led out through the ground electrode. One end of the discharge strip plate 128 is fixedly connected with the discharge grounding wire 130 extending out of the protective housing 102.

[0056] Specifically, refer to Figures 7 to 10A boss 131 is fixedly connected to the top of one side of the measuring panel 121 and the discharge panel 122 away from the T-shaped support frame 120. The boss 131 is used to support the conductive slide 119 and the spring 110. The conductive slide 119 is located at the upper and lower ends of the boss 131. A spring 110 is fixedly connected between the conductive slide 119 and the boss 131. When foreign matter appears at the sliding position between the conductive slide 119 and the discharge strip plate 128, it can pass over by being compressed by the spring 110, thereby preventing the foreign matter from affecting the movement of the T-shaped support frame 120. The T-shaped support frame 120 is made of non-conductive material.

[0057] Specifically, refer to Figures 9 and 10 The discharge assembly 118 also includes a spline column 132 fixedly connected to one end of the discharge connection line 124. When the measuring connector 135 and the discharge connector 133 are pressed back into the insulating box 136, they will slide along the spline column 132, so that the discharge connector 133 and the measuring connector 135 will not be separated from the spline column 132. The outer wall of the spline column 132 away from the end of the discharge connection line 124 is slidably connected with the discharge connector 133. The discharge connector 133 is provided with a double bevel that is in sliding contact with the double bevel conductive block 125. The discharge connector 133 and the measuring connector 135 can slide on the double bevel conductive block 125 through the bevel. The outer wall of the discharge connection line 124 is fixedly connected with an insulating bracket 134, and the insulating bracket 134 is fixed on the insulating pad 115.

[0058] The discharge connector 133 forms a conductive channel with the external grounding electrode through the spline column 132, the discharge connecting wire 124, the discharge panel 122, the spring 110, the conductive slide plate 119, the discharge strip plate 128, and the discharge grounding wire 130, so that the current in the cable after measurement can be conducted to the ground electrode. The grounding conductor 108, the discharge grounding wire 130 and the measurement grounding wire 163 are not fixed in the same ground electrode to prevent the current backflow from affecting the data detection.

[0059] Specifically, refer to Figures 9 and 10 The measuring assembly 117 further comprises a spline column 132 fixedly connected to one end of the measuring connecting line 123, and a measuring connector 135 is slidably connected to the outer wall of the other end of the spline, and a double bevel is provided on the measuring connector 135 for sliding contact with the double bevel conductive block 125;

[0060] The measuring connector 135 forms a conductive channel with the L end on the detection module 101 through the spline column 132, the measuring connecting line 123, the measuring panel 121, the spring 110, the conductive slide plate 119, the measuring strip plate 127, the measuring incoming line 129, and the ground end of the detection module 101 is fixedly connected with the measuring grounding line 163, so that the measuring connector 135 is connected with the L end of the detection module 101, thereby detecting the cable.

[0061] Specifically, refer to Figures 9 and 10 An insulating box 136 is fixedly connected to the outer wall of one end of the spline column 132. The insulating box 136 is made of insulating material to prevent current leakage. A spring 110 is sleeved on the outside of the spline column 132. The spring 110 is used to push the discharge connector 133 and the measuring connector 135 out of the insulating box 136 so that they come into contact with the double-bevel conductive block 125. The spring 110 is arranged between the insulating box 136 and the measuring connector 135 and the discharge connector 133.

[0062] Specifically, refer to Figures 5 to 8 The bottom end of the mobile platform 114 is fixedly connected with a folding plate 137, which is tilted upward and can press the contact plate 109 down by contacting the inclined folding edges 138 on both sides of the contact plate 109. The top two sides of the contact plate 109 are fixedly connected with inclined folding edges 138 that can slide in contact with the folding plate 137. One end of the mobile platform 114 is fixedly connected with a slider 139, and the side wall of the accommodating cavity 106 is fixedly connected with a slide rail 140. The slide rail 140 is used to maintain the stable sliding of the mobile platform 114, and the slider 139 is slidably connected to the slide rail 140;

[0063] refer to Figure 3 The storage chamber 105 is fixedly connected with a motor 160 and a power supply 161 inside. The detection module 101, the motor 160 and the wireless communication module 162 are signal-connected. The power supply 161 supplies power to them. The output end of the motor 160 is fixedly connected to the threaded rod 113. The power supply 161 is connected to the power supply terminals of the detection module 101 and the motor 160. The detection module 101 is equipped with a wireless communication module 162, which can transmit the detected data to the data terminal to facilitate the tester to retrieve it.

[0064] Specifically, refer to Figure 4 and Figure 6 The outer walls of the conductive copper plate 111 and the double-bevel conductive block 125 are fixedly connected with an insulating fixing frame 141, one end of the conductive copper plate 111 is fixedly connected with a connecting wire 142 extending out of the protective shell 102, and one end of the connecting wire 142 close to the conductive copper plate 111 is sleeved with a rubber bracket 143, and the rubber bracket 143 is sleeved between the connecting wire 142 and the protective shell 102 to prevent the connecting wire 142 from bending and causing damage. The connecting wire 142 is fixedly connected to the side wall of the protective shell 102 through the rubber bracket 143, and the outer wall of the connecting wire 142 is fixedly connected with a rubber sleeve 144, and the rubber sleeve 144 is used to protect the connecting wire 142. The connecting wire 142 has a wire inside and an insulating rubber outside. One end of the rubber sleeve 144 is fixedly connected to the protective shell 102;

[0065] refer to Figure 1 and Figure 2One end of the connecting wire 142 away from the conductive copper plate 111 is fixedly connected with an alligator clip 145, and the connecting wire 142 is fixed to the crimping terminal of the phase line through the alligator clip 145, and the alligator clip 145 is clamped on the crimping terminal of the phase line at one end of the cable.

[0066] Specifically, refer to Fig.13 and Fig.15 A cable bracket 146 is provided on the outside of the protective housing 102. The cable bracket 146 is used to support the cable. The cable bracket 146 includes a semi-arc support plate 147 and a fan-shaped plate 148. A cable is placed on the top of the semi-arc support plate 147. The inner diameter of the semi-arc support plate 147 is greater than or equal to the outer diameter of the cable. A through groove 149 is provided on the semi-arc support plate 147. The through groove 149 is used to connect the fixing belt 150. The fixing belt 150 is fixedly connected in the through groove 149 on one side of the semi-arc support plate 147. The bottom of the through groove 149 on the other side of the semi-arc support plate 147 is fixedly connected to the fixing belt 150. It is connected to a rotating clamp block 151, which is used to fix the fixing belt 150, thereby fixing the cable. The rotating clamp block 151 includes a fixed clamp 152 and a movable clamp 153 rotatably connected to the fixed clamp 152. The movable clamp 153 is fixedly connected to the fixed clamp 152 by a bolt 154. The fixed clamp 152 and the movable clamp 153 are symmetrically fixedly connected to the facing sides with a toothed plate 155. The teeth of the toothed plate 155 are set downward to prevent the fixing belt 150 from escaping from the rotating clamp block 151. One end of the fixing belt 150 is located in the symmetrical toothed plate 155.

[0067] Specifically, refer to Fig.13 and Fig.14 The fan-shaped plate 148 is fixedly connected to the bottom of the semi-arc support plate 147. The bottom of the fan-shaped plate 148 close to the phase line is fixedly connected to a mounting frame 156. A telescopic rod 157 is fixedly connected inside the mounting frame 156. The telescopic rod 157 can be telescopic. A supporting claw 158 is connected to the output end. The supporting claw 158 is set upward, and the top is used to place the phase line of the cable. The extended end of the telescopic rod 157 is fixedly connected to the supporting claw 158, and the top of the supporting claw 158 is placed with the phase line.

[0068] Support legs 159 are fixedly connected to both sides of the sector plate 148 and the semi-arc support plate 147 , and the support legs 159 can be fixed to the ground through a connecting piece.

[0069] Specifically, a testing method of a tester includes the following steps:

[0070] Step 1: Wear personal protective equipment and ensure that the device and the discharge rod of the present invention function normally. Completely power off the cable to be tested, remove the external connection, connect the cable bracket 146 to the ground electrode through the connecting wire, use the discharge rod to discharge the three-phase line in sequence, place the cable on the cable bracket 146 after discharge, and fix the cable with the fixing belt 150;

[0071] Step 2: Place the three-phase wires separated from the cable on the support claw 158 on the cable bracket 146, connect the grounding wire 108, the discharge grounding wire 130 and the measurement grounding wire 163 of the device to different ground electrodes in turn to prevent current backflow during the test, and clamp the three connecting wires 142 on the wiring terminals of the phase wires in turn through the alligator clips 145. At this time, the detection module 101 can be directly controlled or remotely wirelessly controlled. After the detection module 101 is started, the three-phase wires will be tested in turn;

[0072] Step three, during the test, the data will be directly displayed on the detection module 101, and will also be transmitted to the data terminal through the wireless communication module 162, and the detection data can be obtained from the data terminal. After the detection, first use the discharge rod to discharge the three-phase line, then remove the alligator clip 145 on the phase line, remove the grounding wire 108, the discharge grounding wire 130 and the measurement grounding wire 163 fixed on different ground electrodes, and then remove the cable from the cable bracket 146, and finally remove the connecting wire between the cable bracket 146 and the ground electrode to complete the detection.

[0073] The detection module 101, the motor 160 and the wireless communication module 162 in the present invention are signal-connected, the power supply 161 supplies power to them, the detection module 101 can be connected to a data terminal via the wireless communication module 162, and the detection module 101 can be controlled wirelessly.

[0074] When the alligator clip 145 is connected to the connection terminal of the phase line, the connection terminal, the alligator clip 145, the connecting wire 142 and the conductive copper plate 111 form a conductive path. Before use, the mobile platform 114 is located on the side of the accommodating cavity 106 close to the storage cavity 105, and the grounding plate 107 is connected to the conductive copper plate 111 through the spring 110 and the contact plate 109, so that the conductive copper plate 111 is connected to the external ground electrode through the contact plate 109, the spring 110, the grounding plate 107, and the grounding wire 108.

[0075] When the detection module 101 is started, the detection module 101 controls the start of the motor 160. The output end of the motor 160 drives the mobile platform 114 to move toward the other end through the threaded rod 113. When the mobile platform 114 moves to the first conductive copper plate 111, the folding plate 137 at the bottom of the mobile platform 114 will press the contact plate 109 down through contact with the inclined folding edge 138, so that the grounding plate 107 loses connection with the conductive copper plate 111. At this time, the measuring connector 135 on the measuring component 117 It will contact with the double-bevel conductive block 125. At this time, the conductive copper plate 111 forms a conductive channel with the L end on the detection module 101 through the measuring connector 135, the spline column 132, the measuring connecting line 123, the measuring panel 121, the spring 110, the conductive slide plate 119, the measuring strip plate 127, the measuring incoming line 129, and the E end of the detection module 101 is connected to the ground electrode through the measuring grounding line 163, generating a detection current, and transmitting the detection current to the cable, so that the connected phase line can be detected;

[0076] After the detection is completed, the detection module 101 drives the mobile platform 114 to move again. At this time, the measuring connector 135 is pressed into the insulating box 136 by contacting the inclined surface of the double-slope conductive block 125. When the measuring component 117 exceeds the range of the double-slope conductive block 125, the measuring connector 135 will be separated from the double-slope conductive block 125, and the discharge connector 133 will contact the double-slope conductive block 125, so that the current in the phase line passes through the discharge connector 133, the spline column 132, the discharge connecting line 124, the discharge panel 122, the spring 110, the conductive slide plate 119, and the discharge strip plate. 128. The discharge grounding wire 130 is released into the external ground electrode. After the release, the detection module 101 drives the mobile platform 114 to move toward the next phase line again until the three phase lines are detected in sequence. When the mobile platform 114 moves to the end away from the storage cavity 105, the detection module 101 controls the motor 160 to reverse and drives the mobile platform 114 back to the initial position through the threaded rod 113. It should be noted that when the mobile platform 114 is reset, although the double-bevel conductive block 125 will contact the discharge component 118, the detection module 101 does not generate current and will not affect the cable.

[0077] When the mobile platform 114 moves, the T-shaped support frame 120 will move laterally along the strip support 126, driving the discharge panel 122 and the measuring panel 121 on both sides to move, and the bosses 131 on the top of the measuring panel 121 and the discharge panel 122 drive the spring 110 and the conductive slide 119 to slide. At this time, the conductive slide 119 on the top of the discharge panel 122 will slide inside the discharge strip plate 128, and the conductive slide 119 on the top of the measuring panel 121 will slide inside the measuring strip plate 127.

[0078] The semi-arc support plate 147 on the cable bracket 146 is greater than or equal to the outer diameter of the cable. If it is greater, it can be suitable for cables of different models. The through grooves 149 on both sides of the semi-arc support plate 147 are convenient for tightening the fixing belt 150. The fixing belt 150 passes through the top of the cable to fix the cable. The movable clamp 153 is fixed to the fixing clamp 152 by the bolt 154, so as to clamp the fixing belt 150. The toothed plate 155 inside the rotating clamp block 151 can increase the clamping capacity of the fixing belt 150. The telescopic rod 157 on the fan-shaped plate 148 can be telescoped to adapt to phase lines of different lengths, and the support claw 158 supports the phase line.

[0079] The above-mentioned embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. A multifunctional wireless insulation resistance tester, comprising a detection module (101), characterized in that: A protective shell (102) is provided at the bottom of the detection module (101), the protective shell (102) comprises a bottom shell (103) and a top shell (104), the detection module (101) is fixedly connected to the top shell (104), and a storage cavity (105) and a receiving cavity (106) are provided inside the protective shell (102); A grounding plate (107) is fixedly connected to the bottom of the accommodating cavity (106), one end of the grounding plate (107) is fixedly connected to a grounding wire (108) extending out of the protective housing (102), a plurality of contact plates (109) are rotatably connected to the grounding plate (107), the plurality of contact plates (109) are axially arrayed on the grounding plate (107), a spring (110) is fixedly connected between the contact plate (109) and the grounding plate (107), a conductive copper plate (111) is provided in the accommodating cavity (106), one end of the conductive copper plate (111) is provided with an open groove (112) for accommodating the contact plate (109); A threaded rod (113) is rotatably connected in the accommodating cavity (106); the outer wall of the threaded rod (113) is threadedly connected to a movable platform (114); the top of the movable platform (114) is fixedly connected to an insulating pad (115); the top of the insulating pad (115) is fixedly connected to a connecting component (116), a measuring component (117) and a discharging component (118); the discharging component (118) is located on a side close to the accommodating cavity (106); the connecting component (116) comprises a conductive slide plate (119), a T-shaped support frame (120) and a fixed A measuring panel (121) and a discharge panel (122) connected to both sides of the support frame, the measuring panel (121) being arranged toward the measuring assembly (117), the measuring assembly (117) comprising a measuring connection line (123) fixedly connected to the measuring panel (121), the discharge assembly (118) comprising a discharge connection line (124) fixedly connected to the discharge panel (122), and a double-bevel conductive block (125) capable of contacting the measuring assembly (117) and the discharge assembly (118) being fixedly connected to the top of the conductive copper plate (111); The top of the accommodating cavity (106) is fixedly connected to a strip bracket (126), the interior of the strip bracket (126) is fixedly connected to a measuring strip plate (127) and a discharging strip plate (128), the conductive slide plate (119) and the measuring strip plate (127) are slidably connected to the discharging strip plate (128), a measuring incoming line (129) is fixedly connected between the measuring strip plate (127) and the L end of the detection module (101), and one end of the discharging strip plate (128) is fixedly connected to a discharging grounding line (130) extending out of the protective housing (102).

2. A multifunctional wireless insulation resistance tester according to claim 1, characterized in that: A boss (131) is fixedly connected to the top of one side of the measuring panel (121) and the discharge panel (122) away from the T-shaped support frame (120); the conductive slide plate (119) is located at the upper and lower ends of the boss (131); a spring (110) is fixedly connected between the conductive slide plate (119) and the boss (131); and the T-shaped support frame (120) is made of a non-conductive material.

3. A multifunctional wireless insulation resistance tester according to claim 2, characterized in that: The discharge assembly (118) further comprises a spline column (132) fixedly connected to one end of the discharge connection line (124); an outer wall of the spline column (132) away from one end of the discharge connection line (124) is slidably connected to a discharge joint (133); a double bevel is provided on the discharge joint (133) for slidably contacting the double bevel conductive block (125); an outer wall of the discharge connection line (124) is fixedly connected to an insulating bracket (134); and the insulating bracket (134) is fixed to the insulating pad (115); The discharge joint (133) forms a conductive channel with an external grounding electrode through a spline column (132), a discharge connecting line (124), a discharge panel (122), a spring (110), a conductive slide plate (119), a discharge strip plate (128), and a discharge grounding line (130).

4. A multifunctional wireless insulation resistance tester according to claim 2, characterized in that: The measuring assembly (117) further comprises a spline column (132) fixedly connected to one end of the measuring connecting line (123); the outer wall of the other end of the spline is slidably connected to a measuring connector (135); and the measuring connector (135) is provided with a double bevel that is in sliding contact with the double bevel conductive block (125); The measuring connector (135) forms a conductive channel with the L end on the detection module (101) through the spline column (132), the measuring connection line (123), the measuring panel (121), the spring (110), the conductive slide plate (119), the measuring strip plate (127), and the measuring incoming line (129); the grounding end of the detection module (101) is fixedly connected to the measuring grounding line (163).

5. A multifunctional wireless insulation resistance tester according to claims 3-4, characterized in that: An insulating box (136) is fixedly connected to the outer wall of one end of the spline column (132), and a spring (110) is sleeved on the outside of the spline column (132). The spring (110) is arranged between the insulating box (136) and the measuring joint (135) and the discharging joint (133).

6. A multifunctional wireless insulation resistance tester according to claim 1, characterized in that: The bottom end of the movable platform (114) is fixedly connected to a folding plate (137), the top two sides of the contact plate (109) are fixedly connected to inclined folding edges (138) that can slidably contact the folding plate (137), one end of the movable platform (114) is fixedly connected to a slider (139), the side wall of the accommodating cavity (106) is fixedly connected to a slide rail (140), and the slider (139) is slidably connected to the slide rail (140); A motor (160) and a power source (161) are fixedly connected inside the storage cavity (105); an output end of the motor (160) is fixedly connected to the threaded rod (113); the power source (161) is connected to the detection module (101) and the power supply terminal of the motor (160); and a wireless communication module (162) is installed on the detection module (101).

7. The multifunctional wireless insulation resistance tester according to claim 1, characterized in that: The outer walls of the conductive copper plate (111) and the double-bevel conductive block (125) are fixedly connected with an insulating fixing frame (141); one end of the conductive copper plate (111) is fixedly connected with a connecting wire (142) extending out of the protective housing (102); one end of the connecting wire (142) close to the conductive copper plate (111) is sleeved with a rubber bracket (143); the connecting wire (142) is fixedly connected to the side wall of the protective housing (102) through the rubber bracket (143); the outer wall of the connecting wire (142) is fixedly connected with a rubber sleeve (144); one end of the rubber sleeve (144) is fixedly connected to the protective housing (102); One end of the connecting wire (142) away from the conductive copper plate (111) is fixedly connected to an alligator clip (145), and the alligator clip (145) is clamped on a crimping terminal of a phase line at one end of the cable.

8. The multifunctional wireless insulation resistance tester according to claim 7, characterized in that: A cable bracket (146) is provided on the outside of the protective housing (102), and the cable bracket (146) comprises a semi-arc support plate (147) and a fan-shaped plate (148). A cable is placed on the top of the semi-arc support plate (147). A through groove (149) is provided on the semi-arc support plate (147). A fixing belt (150) is fixedly connected in the through groove (149) on one side of the semi-arc support plate (147). A rotating clamp block (151) is fixedly connected to the bottom of the fixing member (152), the rotating clamp block (151) comprising a fixing clamp (152) and a movable clamp (153) rotatably connected to the fixing clamp (152), the movable clamp (153) being fixedly connected to the fixing clamp (152) by means of a bolt (154), a tooth plate (155) being symmetrically fixedly connected to the opposite sides of the fixing clamp (152) and the movable clamp (153), and one end of the fixing belt (150) being located in the symmetrical tooth plate (155).

9. A multifunctional wireless insulation resistance tester according to claim 8, characterized in that: The fan-shaped plate (148) is fixedly connected to the bottom of the semi-arc support plate (147); the bottom of one end of the fan-shaped plate (148) close to the phase line is fixedly connected to a mounting frame (156); a telescopic rod (157) is fixedly connected inside the mounting frame (156); a supporting claw (158) is fixedly connected to the extended end of the telescopic rod (157); and a phase line is placed on the top of the supporting claw (158); Support feet (159) are fixedly connected to both sides of the fan-shaped plate (148) and the semi-arc support plate (147).

10. A tester testing method, used for testing a multifunctional wireless insulation resistance tester as claimed in any one of claims 1 to 9, characterized in that: The testing method of the tester comprises the following steps: Step 1: Wear personal protective equipment and ensure that the device and the discharge rod of the present invention function normally. Completely power off the cable to be tested, remove the external connection, connect the cable bracket (146) to the ground electrode through a connecting line, use the discharge rod to discharge the three-phase line in sequence, place the cable on the cable bracket (146) after discharge, and fix the cable with a fixing belt (150); Step 2: Place the three-phase wires separated from the cable on the support claw (158) on the cable bracket (146), connect the grounding wire (108), the discharge grounding wire (130) and the measurement grounding wire (163) of the device to different ground electrodes in sequence to prevent current backflow during testing, and clamp the three connecting wires (142) on the wiring terminals of the phase wires in sequence through alligator clips (145). At this time, the detection module (101) can be directly controlled or remotely wirelessly controlled. After the detection module (101) is started, the three-phase wires will be tested in sequence; Step 3: During the test, the data will be directly displayed on the detection module (101) and will also be transmitted to the data terminal through the wireless communication module (162). The detection data can be obtained from the data terminal. After the test, the three-phase line is first discharged using a discharge rod, and then the alligator clip (145) on the phase line is removed, and the grounding wire (108), the discharge grounding wire (130) and the measurement grounding wire (163) fixed on different ground electrodes are removed, and then the cable is removed from the cable bracket (146). Finally, the connection line between the cable bracket (146) and the ground electrode is removed, and the test is completed.

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