205 results about "Electroscope" patented technology

The invention discloses an electricity testing measuring device for power equipment. The invention relates to the field of space electric field measurement, and solves the problems of unsafety and low anti-interference capability of an existing electricity testing scheme. The electric field sensor collects the electric field intensity in a non-contact manner, and the distance sensor synchronously collects the detection distance, so that a conventional contact type electroscope does not need to contact equipment through a telescopic insulating rod. The signal processing circuit preprocesses electric field intensity information and distance information respectively to obtain effective analog signals representing the electric field to be measured, and the defect that a traditional non-contact plate electrode sensor induces stray electric fields indifferentially is overcome. Besides, the judgment control circuit judges the electrification state according to the preset electric field threshold value corresponding to the current distance analog signal instead of a single fixed threshold value of a traditional device instead of adopting a fixed threshold value, the electric field distribution characteristics of equipment with different voltage grades are adapted, manual intervention is not needed, and personal safety is guaranteed. And the occurrence rate of production accidents caused by abnormal electrification of equipment is reduced.

The invention discloses an application method and system of an intelligent electroscope in marketing operation, and the system employs a non-contact electric field sensing module to detect the power-on state of an electric power line, avoids manual contact measurement, reduces the risk of electric shock of personnel, carries out the filtering and feature extraction (time domain and frequency domain features) of an electric field signal through a data processing unit, and improves the detection precision. A machine learning model (such as SVM and DNN) is combined to train historical data, real electrified signals and interference signals can be effectively distinguished, and detection errors are reduced; electricity testing data remote transmission is achieved by means of a wireless communication module, task issuing, automatic result uploading and abnormal alarm are completed in combination with a marketing operation system, manual recording and feedback are not needed, the problems that remote confirmation is difficult and information transmission lags behind in a traditional mode are solved, and intelligence and high efficiency of electricity marketing operation are improved; the positioning module records the geographic position of the electricity testing point and synchronizes the geographic position to the marketing operation system, thereby facilitating operation flow tracing and task overall scheduling, and optimizing the marketing operation flow.

The invention, which relates to the technical field of power transmission line electricity verification, discloses a power transmission line power failure maintenance operation unmanned aerial vehicle-mounted electricity verification device comprising an unmanned aerial vehicle, a camera shooting mechanism is arranged below the unmanned aerial vehicle through an elastic damping mechanism, the camera shooting mechanism comprises a mounting rack, and a camera shooting device is rotatably arranged in the mounting rack. A second driving motor is fixed to the side face of the mounting frame, and an output shaft of the second driving motor is fixedly connected with the camera. An adjusting mechanism and an electricity testing mechanism are arranged at the bottom of the mounting frame, the adjusting mechanism is used for adjusting the position of the electricity testing mechanism, and a mounting mechanism used for being rapidly fixed to the electricity testing mechanism is arranged on one side of the adjusting mechanism; the electricity testing mechanism comprises an electroscope, a clamping block is fixed at the end part of the electroscope, an insulating rod is arranged on the electroscope, a conductive terminal is arranged at the end part of the insulating rod, and the electroscope, the insulating rod and the conductive terminal are arranged, so that the electric wire can be detected by utilizing the electroscope, the insulating rod and the conductive terminal, whether the electric wire is electrified or not is judged, and the detection work is realized.

The invention belongs to the technical field of power transmission line maintenance, and discloses an unmanned aerial vehicle electricity testing auxiliary ground wire hanging and dismounting device which comprises an unmanned aerial vehicle body and a first hook installed on the unmanned aerial vehicle body and further comprises a non-contact electroscope and a communication module which are both installed on the unmanned aerial vehicle body. According to the scheme, the unmanned aerial vehicle body is operated by an operator to drive the first hook to lift the whole mounting frame assembly, the frame body is firstly kept static under the gravity of the frame body, a power transmission cable is clamped between the frame body and the pressing block through resetting of the pressing block, and then the rope is driven by the operation motor to be paid off; meanwhile, the end of the connecting fastener moves downwards to fasten the grounding wire with the connecting fastener, and then an operator lifts the connecting fastener and the grounding wire by pulling the other end of the rope and makes contact with the end part of the guide rod, so that the problems that the grounding wire is hung on the power transmission line in a manual climbing manner, which is relatively tedious and low in safety are solved.

The invention belongs to the technical field of electroscopes, and discloses an electricity testing device. The electricity testing device comprises a shell, a conducting rod, two electricity testing rods, a driving mechanism and an electricity testing mechanism, the conducting rod is arranged in the shell, a sliding groove is formed in one end of the conducting rod in the radial direction of the conducting rod, the two electricity testing rods are arranged in the sliding groove in a sliding mode, at least part of the electricity testing rods stretch out of the shell, and the driving mechanism comprises two driving assemblies. The two driving assemblies are arranged in the shell, the output end of each driving assembly is connected with one electricity testing rod, the two driving assemblies are used for driving the two electricity testing rods to be close to or far away from each other in the radial direction of the conducting rod so as to clamp or loosen a to-be-tested electric wire, and the electricity testing mechanism is arranged in the shell. The end, away from the two electricity testing rods, of the conductive rod is connected with the electricity testing mechanism, and the electricity testing mechanism is used for detecting whether the to-be-tested wire clamped by the two electricity testing rods is electrified or not, so that the operation process is simplified, the clamping force is more uniform, the clamping stability is improved, and the accuracy and reliability of the electricity testing result are ensured.

The underground electric locomotive overhead line straightening tool comprises a rod body, one end of the rod body is fixedly connected with a rolling wheel mounting frame, the rolling wheel mounting frame is arranged in an L shape, rolling wheels are fixed to the two ends of the rolling wheel mounting frame respectively, the side wall of the rod body is fixedly connected with a high-voltage electroscope, and the high-voltage electroscope has the length telescopic function; and electricity testing can be carried out on the cable clamped between the two rollers. The underground electric locomotive overhead line straightening tool can well straighten a bent cable, so that a pantograph and the cable are in good contact, and the stability of power supply is ensured. And the tool is provided with the high-voltage electroscope, so that whether the cable is electrified or not can be detected before construction, and the construction safety of workers is guaranteed.

The utility model provides high-voltage electrician simulation examination equipment, and relates to the technical field of electrician simulation examination, the high-voltage electrician simulation examination equipment comprises a transformer examination system and a line hanging protection grounding wire examination system, the transformer examination system comprises a touch screen all-in-one machine, a control panel, a wire column, a transformer, a power box, an insulation column, a power cable, a drop-out fuse and a wind direction indicating lamp, the line hanging protection grounding wire examination system comprises a grounding box, a grounding wire, a grounding rod and an insulating rod. The technical key points are that a touch screen all-in-one machine, a control panel, a wire column, a transformer, a power box, an insulating column, a power cable, a drop-out fuse and a wind direction indicating lamp are utilized to form a transformer examination system, and a grounding box, an electroscope, a grounding wire and a grounding rod are added to form a line hanging protection grounding wire examination system. According to the invention, after a student re-completes simulation examination work in an existing computer examination simulation system, practical operation can be carried out, so that theoretical and practical operation training of the student is ensured, and the training effect is ensured.

The invention provides an electroscope operation intelligent control system based on an intelligent sensing technology, and belongs to the field of electroscope control. Comprising a processor which is in communication connection with a maintenance analysis module, a fault monitoring module and a prediction analysis module. The maintenance analysis module is used for carrying out maintenance analysis on the electroscope; the fault monitoring module is used for monitoring the operation fault of the electroscope in real time, and marking the execution process corresponding to the electricity verification operation of the electroscope as a normal process or a fault process. And the prediction analysis module is used for performing prediction analysis on the fault probability of the normal process at the end moment of the normal process, and marking the corresponding normal process as a risk process when the normal process has a fault risk. According to the invention, the fault probability of the normal process can be predicted and analyzed at the end time of the normal process through the prediction and analysis module, so that the electroscope is actively maintained when the fault probability is abnormal, the fault frequency of the electroscope is reduced, and the actual operation risk of the electroscope is effectively suppressed.

The utility model provides an electroscope power supply reliability test device comprising a high-voltage box which is provided with a to-be-tested electroscope potential so as to install a to-be-tested electroscope, and a circuit which provides a test voltage for the to-be-tested electroscope through the high-voltage box; and the control box is electrically connected with the high-voltage box so as to control timing and on-off of a circuit for providing the test voltage by the high-voltage box. The reliability test device can automatically test the reliability of the electroscope power supply, is simple to use and convenient to operate, improves the flexibility and accuracy of the reliability test of the electroscope power supply, and improves the automation degree.

The utility model relates to the technical field of electric power, in particular to a detachable safety tool auxiliary device. The detachable safety tool auxiliary device comprises a plurality of insulation pull rods, an electroscope connection auxiliary device and a grounding wire clamp connection auxiliary device. The plurality of insulating pull rods are detachably connected, the left side of each insulating pull rod is provided with a grounding wire clamp connection auxiliary device and an electroscope connection auxiliary device which are detachably connected, and the electroscope connection auxiliary device and the grounding wire clamp connection auxiliary device are connected with the working device; according to the detachable safety tool auxiliary device provided by the utility model, an original telescopic insulating pull rod is changed into the threaded detachable hollow insulating pull rod, so that the weight of the insulating pull rod is reduced, and the situation that electricity testing cannot be carried out at a specified height due to failure of a telescopic buckle is avoided; through detachable connection between the grounding wire clamp connection auxiliary device and the electroscope connection auxiliary device, two kinds of work can be completed by using the same tool, so that the purpose of reducing safety accidents is achieved.

The embodiment of the utility model provides a maintenance safety auxiliary device convenient to use. Comprising a moving base, a first driving assembly, a lifting assembly, a second driving assembly and an electroscope, wherein rollers are arranged at the bottom of the moving base; the first driving assembly is used for driving the moving base to move; the lifting assembly is vertically arranged on the moving base; the detection place and the detection height of the electroscope can be adjusted by moving the base and the lifting assembly, and use is convenient; a mounting block is fixedly arranged at the top end of the lifting assembly, a slot is formed in the top of the mounting block, and a clamping block is slidably arranged in the slot; the bottom of the electroscope is provided with an insertion block, the insertion block is detachably inserted into the slot, and the insertion block is provided with a clamping groove for clamping the clamping block, thereby facilitating the installation.

1. The name of the design product: electricity detector indicator. 2. The use of the design product: the design product is used for the complete electricity detection device with electricity detection insulation operating rod, and is the main component of electricity detection device for electricity detection operation. 3. The design points of the design product: in shape. 4. The picture or photo that can best show the design points: perspective view.

The invention discloses a shielded cable electricity testing method based on ground loop impedance potential lifting, and relates to the technical field of measurement. The electroscope comprises an electricity testing step, an induction electrode on the cambered surface of the electroscope is used for obtaining induced electricity, a broadband direct sampling framework is formed on the physical level, and broadband direct sampling of millivolt-level power frequency displacement current characteristics is achieved. Based on a variational mode decomposition-Duffing oscillator fusion weak signal extraction algorithm, a variational mode decomposition algorithm is utilized to adaptively strip broadband noise and higher harmonics, a reconstructed signal is subjected to scale normalization and then introduced into a critical chaotic state Duffing oscillator algorithm, phase transition of a phase track from a chaotic attractor to a large-scale limit cycle is monitored, and a weak signal is extracted. A non-linear dynamic weak signal extraction algorithm is formed on the algorithm level, and weak power frequency features masked by strong noise are accurately recognized; a broadband direct acquisition framework and a weak signal extraction algorithm form a dual detection framework, and a quasi-induction electric signal is detected and judged in the live part verification process of the shielded cable.

The present invention provides a power circuit continuity testing device, which relates to the technical field of power circuit continuity testing devices, including a measuring plug, a detection body and an electrical measuring mechanism; in actual operation, a measuring plug corresponding to a socket to be tested is selected, and the measuring plug can be directly inserted into the jack of the socket to be tested. The electrical measuring mechanism is electrically connected to the measuring plug through the detection body, and the electrical measuring mechanism can be used to directly detect the smooth flow of the circuit in the socket to be tested. When it is detected that the circuit in the socket is blocked, the electrical measuring mechanism can be used to further judge the missing information of the live wire in the circuit in the socket to be tested. The electrical measuring mechanism can be used to check whether the circuit of the socket to be tested is smooth, and whether the live wire is missing when the circuit is blocked, thereby meeting the electrical testing requirements for the socket to be tested and alleviating the technical problems in the prior art that the existing electrical tester cannot meet the electrical testing requirements of various socket types and there are safety hazards when the socket is removed for electrical testing.

The invention provides an electricity testing device, and relates to the technical field of electricity testing equipment. The electricity testing device comprises a supporting rod, a transmission assembly and at least one electroscope. The electroscope comprises an insulating rod and an electricity testing piece connected with the insulating rod, the transmission assembly comprises a transmission rod and at least one first transmission piece, the transmission rod is connected with the first transmission piece, the first transmission piece is located in the supporting rod, the transmission rod partially extends out of the supporting rod and is detachably connected with the insulating rod, and the first transmission piece is configured to rotate relative to the supporting rod. The electroscope is driven by the transmission rod to rotate relative to the supporting rod. During electricity testing, the electroscope can rotate relative to the supporting rod to face the to-be-tested equipment according to the position of the to-be-tested equipment, so that the contact between the electricity testing piece and the to-be-tested equipment is more convenient, the electricity testing operation time is shortened, and the electricity testing efficiency is improved.

The invention discloses the technical field of electroscopes, and particularly relates to a detachable connector which comprises a supporting block made of an insulating material. The fastening mechanism comprises a connecting piece and a fastening piece, the connecting piece is connected with the supporting block through the fastening piece, the connecting piece is made of an insulating material, the side wall of the supporting block is provided with a first groove and a second groove, the first groove and the second groove are arranged in a mirror image mode along the longitudinal central axis of the supporting block, and the first groove and the second groove are connected with the connecting piece through the fastening piece. The connecting mechanism is simple and reliable, the adopted connecting mode is not in butt joint with the insulating rod, abrasion of a screw thread of the insulating rod is reduced, the connector of the corresponding size is designed according to the size of the electroscope and the size of the insulating rod, and the connector can be detached from the electroscope after auxiliary installation of the electroscope connector is completed through manual fixing and detachable design. And the original appearance of the electroscope insulating rod is recovered.

The utility model discloses an electric power overhaul tool, and belongs to the technical field of electric power. Comprising a plug-in frame provided with an insulating telescopic rod. The elastic pressing piece is mounted in the insertion frame in a hinged manner; the transmission gear is fixedly connected to one end of the elastic pressing piece; the clamping rod frame is connected in the insertion frame in a sliding manner; the toothed plate is fixedly connected to one side of the clamping rod frame and is in meshing transmission with the transmission gear; and the fastening screw rod is in threaded connection with one side of the insertion frame and can be tightly pressed and limited with the toothed plate. According to the application, the high-voltage electroscope is inserted into the insertion frame and is in rolling friction contact with the elastic press-fit piece, so that the elastic press-fit piece drives the clamping rod frame in meshing transmission to move in a limiting manner while limiting the overturning action, the inserted high-voltage electroscope is tightly pressed and limited, and the position of the clamping rod frame is limited under the rotation of the fastening screw rod; therefore, the installation stability and convenience of the high-voltage electroscope are ensured.

The utility model discloses a multi-thread electricity testing hook. The multi-thread electricity testing hook comprises an electricity testing hook main body and an electroscope main body, the electroscope main body comprises a first sub-electroscope hook, a second sub-electroscope hook and a third sub-electroscope hook, the first sub-electroscope hook is rotatably connected with the electroscope main body, the second sub-electroscope hook is fixedly connected with the electroscope main body, and the third sub-electroscope hook is rotatably connected with the electroscope main body; the electroscope main body is internally provided with an inspection circuit, and the inspection circuit is electrically connected with the electroscope hook main body. According to the utility model, the live part inspection hook is divided into three sub live part inspection hooks, and the three sub live part inspection hooks can simultaneously detect whether different cables have discharge conditions, so that the detection efficiency is accelerated.

This invention relates to the field of high-voltage voltage detection technology and discloses a split-type wireless high-voltage voltage detector with dual-mode applications for handheld and drone use. The detector adopts an upper and lower shell structure. The upper shell houses a metal probe, a high-voltage contact plate, and a battery limiting plate; the lower shell integrates a telescopic rod interface, strap lugs, a sensing plate, a lithium battery, and a circuit board, supporting handheld or drone mounting. The sensing plate senses the voltage of the high-voltage conductor based on the principle of capacitive coupling. The signal is processed and transmitted to the receiver via a LORA module, enabling remote voltage detection over distances of several kilometers. The circuit board includes a main control chip, a self-test circuit, a Type-C interface, charge / discharge management, DC-DC step-down, positive and negative voltage, and signal processing modules. The shell is filled with epoxy resin to enhance high-voltage insulation. This structure separates detection and display, combining safety with applicability to multiple scenarios.

The utility model discloses a mounting rack for mounting an electroscope on an unmanned aerial vehicle, which comprises a support frame, the support frame comprises a support plate and a support block, two sides of the support block are connected with a first slide block through a slide rail, the first slide block is connected with a second slide block through a slide rail, a first cylinder is arranged between the second slide block and the support block, and a second cylinder is arranged between the second slide block and the support block. A fixing plate and a third sliding block are arranged on the second sliding block, a clamping frame is arranged on the third sliding block, clamping grooves are symmetrically formed in the clamping frame, clamping blocks are symmetrically arranged in each clamping groove, clamping rings are arranged on the clamping blocks, clamping springs are arranged between the clamping blocks and the clamping grooves, limiting blocks are arranged on the clamping blocks, and limiting grooves matched with the limiting blocks are formed in the clamping grooves. The first sliding block and the second sliding block are driven by the first air cylinder to adjust the position of the electroscope in the horizontal direction, the clamping block and the clamping ring are arranged on the clamping frame in a sliding mode, and under the extrusion effect of the clamping spring, the electroscope is clamped and installed.

The application belongs to the technical field of electroscope, and discloses an electroscope device. The electroscope device comprises a shell, a conductive rod, two electroscope rods, a driving mechanism and an electroscope mechanism. The conductive rod is arranged inside the shell. A sliding groove is formed in the radial direction of the conductive rod at one end of the conductive rod. The two electroscope rods are both slidingly arranged in the sliding groove. At least part of the electroscope rods extends out of the shell. The driving mechanism comprises two driving assemblies. The two driving assemblies are both arranged in the shell. The output end of each driving assembly is connected with one electroscope rod. The two driving assemblies are used to drive the two electroscope rods to move closer to or away from each other in the radial direction of the conductive rod, so as to clamp or release the electric wire to be tested. The electroscope mechanism is arranged inside the shell. One end of the conductive rod away from the two electroscope rods is connected with the electroscope mechanism. The electroscope mechanism is used to detect whether the electric wire to be tested clamped by the two electroscope rods is electrified. The operation process is simplified. The clamping force is more uniform. The stability of clamping is improved. The accuracy and reliability of the electroscope result are ensured.

The utility model discloses an operating rod with comprehensive functions, which comprises a rod body, one end of the rod body is provided with a grab handle, the other end of the rod body is provided with a transition rod, at least two insulating rods are arranged between the grab handle and the transition rod, the insulating rods are matched with each other through a connecting rod, and the connecting rod is connected with the handle. One end part of the grab handle and one end part of the transition rod are respectively matched with one end of the adjacent insulating rod, the other end of the transition rod is provided with a fixed head, the transition rod is connected with the working head through the fixed head, and the working head can be replaced by a stringing device, an electroscope and a saw, so that various construction requirements of constructors can be met; different working heads are replaced according to different construction scenes, the types of construction tools needing to be carried are greatly reduced, the construction cost of constructors is reduced, and the construction efficiency is improved.

The auxiliary support comprises an unmanned aerial vehicle body, a connecting frame is fixedly arranged on the lower end face of the unmanned aerial vehicle body, a rotating shaft is rotationally arranged at the position, located in the middle, of the lower end face of the connecting frame, and a first bevel gear is arranged at the upper end of the rotating shaft; a first motor is arranged on the outer wall of the connecting frame, a second bevel gear is arranged at the output end of the first motor, the first bevel gear and the second bevel gear are installed in a meshed mode, and an adjusting box is fixedly arranged at the lower end of the rotating shaft; therefore, a user can control a first motor to enable a second bevel gear to drive a first bevel gear and a rotating shaft to rotate so as to rotate an adjusting box and the electroscope body at the lower end of the adjusting box, thereby adjusting the installation angle of the electroscope body, and facilitating the adjustment of different positions on a line.

The invention relates to the field of power system safety monitoring, and discloses a large iron main line electricity testing method, system and device and a storage medium, which are used for improving the accuracy and efficiency of electricity testing. The method comprises the steps: obtaining a first voltage value and a second voltage value at the two ends of a contact network section, and the contact state of a network isolation disconnecting link at the two ends of the contact network section; on the basis of the first voltage value, the second voltage value and the contact state of the Internet-surfing isolation disconnecting link, determining that the Internet-surfing isolation disconnecting link is in an opening / closing state, and determining comparison results of the voltage values at the two ends of the contact network section with a preset non-electricity threshold value, a virtual electricity threshold value and a real electricity threshold value, so as to judge the electrification condition of the contact network section; detecting the voltage of the overhead line system through an electroscope to obtain an electroscope result of an overhead line system maintenance operation point; according to the electrification condition and the electricity verification result, obtaining indication information of whether grounding is allowed or not; and indicating a worker to perform corresponding operation based on the indication information.

The present invention discloses an anti-misoperation device and a working method thereof. The device comprises: the anti-misoperation device is composed of a tester, a locking lock and a computer key; the tester and the locking lock respectively have operation logic data, wherein the operation logic data refers to the forced test relationship and operation logic rules between the tester and the locking lock; the computer key is used to obtain the test data and operation logic data of the tester; the computer key is also used to obtain the operation logic data of the locking lock and determine whether it matches the operation logic data of the tester; if it matches, the computer key controls the locking lock to perform an unlocking operation. Through the present invention, the problem of complex composition and high cost of the anti-misoperation device in the related art is solved.

The application discloses a kind of electric testing grounding ring loosening fault monitoring method and system, specifically related to overhead line hardware mechanical connection state monitoring technical field, to solve the problem that existing method is difficult to identify early fretting wear of electric testing grounding ring connection interface from environmental interference under icing and ice melting alternating conditions;By obtaining the temperature signal and strain signal at the connection interface of aluminum wire clamp and copper grounding body, the temperature slowly varying trend component, strain slowly varying trend component and strain high frequency component are obtained by empirical mode decomposition, a temperature-strain hysteresis curve is constructed based on the temperature slowly varying trend component and strain slowly varying trend component, and the envelope area is calculated, when the envelope area is greater than the preset reference area, the rising edge steepness of local peak points in each segment of strain high frequency component and the signal energy ratio of the front and rear time periods are extracted to form statistical distribution characteristics, and the statistical distribution characteristics are matched with the pre-stored stick-slip characteristic template to determine whether fretting wear occurs at the connection interface.

The invention discloses a 12kV high-voltage switch cabinet electricity testing device, and relates to the field of switch cabinet electricity testing, and the device comprises a first pedestal; the lifting unit is arranged at the top of the first base; the electroscope is arranged on the lifting unit; the second base is arranged behind the first base and is connected with the first base through a first electric push rod; the metal shielding shell is arranged at the top of the second base; the control module is arranged in the metal shielding shell, is electrically connected with the electroscope, the first electric push rod and the lifting unit, and is used for acquiring a signal of the electroscope, controlling the first electric push rod to move and controlling the electroscope to ascend and descend through the lifting unit; according to the high-voltage electricity testing cabinet, an operator can quickly and accurately perform electricity testing operation by using the electricity testing device, and then the electroscope is controlled to move back and forth, move left and right and move up and down, so that manual participation is reduced, the electricity testing efficiency of the high-voltage electricity testing cabinet is improved, and the safety of the operator is ensured.

The invention provides a phase-changeable T-shaped bus structure taking clean air as an insulating medium, which comprises a shell, the clean air is adopted as the insulating medium in the shell, a corrugated heat dissipation structure is cast on the surface of the shell, the top, the bottom and the left part of the shell are connected with basin-type insulators through flanges, and the basin-type insulators are connected with the outer side of the shell. The basin-type insulator is connected with the support conductor and the outlet conductor through the metal insert, and the butt joint surfaces of the support conductor and the outlet conductor are connected through the butt joint assembly. The right part of the housing is provided with an electroscope / adsorbent and an explosion-proof device, and is also provided with a density relay. The method has the beneficial effects that the insulating medium adopts clean air, so that low-carbon and environment-friendly effects are realized; the phase change function adopts a modular design, so that the phase change flexibility is realized; and the conductor adopts a rounded rectangular through-flow cross section, so that edge electric field distortion is weakened and the like.

The present invention discloses an electric power safety IoT capacitive voltage detector, which includes a voltage detector circuit box body, an insulating operating rod and a handle. A detection probe and a display screen are provided on the voltage detector circuit box body. The voltage detector circuit box body includes a microcontroller module and a self-checking circuit module. The insulating operating rod includes a first sleeve, a second sleeve and a third sleeve. The first sleeve, the second sleeve and the third sleeve are inserted into each other, and the diameters of the first sleeve, the second sleeve and the third sleeve decrease in sequence. A secondary display screen is provided on the outer surface of the handle, and the secondary display screen is electrically connected to the display screen. Fastening devices are respectively provided on the first sleeve and the second sleeve. The present invention can change the length of the insulating operating rod and fix it by setting the fastening device, so that the device can be conveniently extended into a relatively narrow area for detection. By setting the secondary display screen on the handle, it is convenient to observe the detection result.

1. The name of the design product: electroscope display screen. 2. The use of the design product: the design product is a component part of the electroscope device, which is used to display the value of the voltage (digital or analog) on the electrical device when the electroscope device is used to test the electrical device. 3. The design points of the design product: in shape. 4. The picture or photo that best indicates the design points: perspective view.