5606results about "Apparatus for overhead lines/cables" patented technology

An unmanned aerial vehicle and associated methods for inspecting infrastructure assets includes a multirotor, electrically driven helicopter apparatus and power supply; a flight computer; positioning and collision avoidance equipment; and at least one sensor such as a camera. The flight computer is programmed for automated travel to and inspection of selected waypoints, at which condition data is collected for further analysis. The method also includes protocols for segmenting the flight path to accomplish sequential inspection of a linear asset such as a power line using limited-range equipment.

A method of communicating utility usage data is provided. In one embodiment, the method comprises transmitting real-time utility usage data from a plurality of utility meters, receiving the real-time utility usage data from the plurality of utility meters, storing the real-time utility usage data in a memory, storing address information of the plurality of utility meters in memory, receiving requests from a plurality of utility users for real-time utility usage information and wherein the requests traverse a communication path that includes the Internet, processing the utility usage data of the utility users to provide the real-time utility usage information for each utility user, and transmitting the real-time utility usage information to the utility users over a communication path that includes the Internet.

The invention discloses a high-tension transmission line inspection robot based on a multi-rotor aircraft, which comprises a four-rotor aircraft and an inspection system, wherein a double-power module supplies power to the four-rotor aircraft and the inspection system; the four-rotor aircraft comprises a robot body, four rotors, four rotor motors and four rotor motor drivers, the rotors, the rotor motors and the rotor motor drivers are matched, the four rotors are fixedly arranged on respective rotor motors, and the four drivers are respectively connected with respective rotor motors 3; and the inspection system performs shooting and data transmission on high-tension transmission lines. The robot disclosed by the invention performs air flight inspection based on four rotors, and is high in air flight stability and good in inspection speed. Through wireless camera shooting control, a visible light camera can be moved to a position near a suspected fault point so as to realize the emphasized detection of suspected fault points of the high-tension transmission lines.

The invention discloses a power transmission line polling system. The system comprises a personal computer (PC) side control terminal, a server and a handheld personal digital assistant (PDA), wherein the PC side control terminal, namely a PC side management system, performs polling task management, polling condition management, defect management, defect standard management and geographic information system (GIS) geographic information management; the server receives and transmits information and stores data in real time, comprises an enterprise database and a Socket detectaphone which is used for detecting wireless data in real time, and is called a server Socket data receiving and transmitting system for short; and the handheld PDA performs field polling, is a mobile terminal which feeds back polling information through general packet radio service (GPRS), and is called a PDA mobile terminal polling system for short. The advanced technologies of a global positioning system (GPS) and a palm computer are fused in the system, and power transmission line polling is realized by using a component GIS technology and introducing the concept of embedded GIS; the system performs relatively precise positioning and complete defect data acquisition, can be used for a line polling step in a power system which is used for power transmission, power distribution and the like, and also can be widely applied to the management of the outdoor entities of telecommunication, coal gas, natural gas and the like which are related to the polling; and the operating cost is effectively lowered, and the economic benefit is effectively improved.

The invention relates to a line navigation amphibious power circuit comprehensive maintenance robot and a circuit maintenance method thereof. The line navigation amphibious power circuit comprehensive maintenance robot comprises a flight subsystem, an online subsystem and an operation subsystem, wherein when the robot is in a flight operation mode, the flight subsystem is used for executing far-distance or short-distance cruising of the power circuit; when the robot is in an online operation mode, the online subsystem is used for realizing the moving of the robot on the power circuit; and when the robot is in the online operation mode, the operation subsystem is used for maintaining the power circuit. According to the scheme, high stability, easy operability and controllability and flexibility of a multi-rotor unmanned aerial vehicle technique are utilized, and the specificity and intelligence of online robot technique are also utilized; and by organic combination of the two techniques, the limitation of each technique is overcome, and the superiority of the two techniques in comprehensive maintenance of strong and smart grid is exerted to a maximum extent.

The invention relates to a power transmission tower climbing robot and a power transmission tower routing inspection mode thereof and belongs to the technical field of robots. The robot is formed by a telescopic module, a clamping module and traction modules. The clamping module is divided into an upper clamping module and a lower clamping module, the upper clamping module and the lower clamping module are connected through the telescopic module, and the traction modules are installed on the two sides of the upper clamping module. According to the power transmission tower routing inspection mode of the power transmission tower climbing robot, robots with the corresponding number are installed on corresponding tower piece main materials of a power transmission tower according to routing inspection power transmission tower pieces, the robots of the tower pieces are connected to the corresponding traction modules through traction ropes with detection and maintenance devices, the clamping module and the telescopic module are in linkage to complete climbing and barrier crossing, and thus the detection and maintenance working of the power transmission tower is achieved.

The high-voltage hot-line work robot equipment includes moving vehicle, lifting mechanism, insulated support platform, working mechanical arm, hydralic mechanical hand, isolated transformer, power generator, hydraulic pump and control box. The lifting mechanism, power generator and hydraulic pump are mounted on the chassis of vehicle, the insulated support platform is coupled with tail end of lifting mechansm, the working mechanical arm, isolated transformer and low-voltage control box are mounted on the insulated support platform. The working mechanical arm is driven by motor, the mechanicalhead is driven by hydraulic system, and computer can utilize low-voltage control device to control working mechanical arm, mechanical hand and its holding tool to implement various high-voltage hot-lint works.

The invention discloses a method for detecting the safe power-line-cruising distance of a UAV (unmanned aerial vehicle), which comprises the following steps of: (1) carrying out analysis according to the characteristics of electromagnetic fields of to-be-detected high-tension transmission lines in different voltage levels, and establishing corresponding electromagnetic-field simulation calculation models; (2) determining the maximum errors of electronic devices (which are susceptible to electromagnetic interference) carried by the power-line-cruising UAV and measuring devices used in the process of route planning making before routing inspection; (3) according to the requirements of the determined electronic devices on electromagnetic fields in the process of normal operating, by using the electromagnetic-field simulation calculation models of the high-tension transmission lines in different voltage levels and electromagnetic-field simulation calculation software, calculating the similarities and differences of an electromagnetic environment when the UAV has different distances away from a transmission conductor in the process of carrying out line-cruising operation on each high-tension transmission line, thereby determining the range of the safe distance between the UAV and the transmission conductor; and (4) carrying out line-cruising by the UAV according to the determined safe distance of each to-be-detected transmission line, thereby avoiding the situations that the devices run disorderly, the flight communication is interfered, a flight mission is failed, and the like caused by the electromagnetic field of the transmission conductor, and then ensuring the safety, stability and reliability of a flight.

The invention discloses a fast image recognition method of an insulator contour, comprising the following steps: (1) transforming a taken color image to a gray image through brightness calculation and extracting the edge contour of the image, and obtaining the shape of a known region after the extraction; (2) carrying out ellipse fitting on the edge contour of the known region, utilizing hough transform to detect a boundary curve and obtain each parameter of a prolate axis, a minor axis and a central point of an ellipse; (3) carrying out threshold processing on contour area, and setting a proper area threshold according to the contour area; (4) carrying out linear fitting on the center of the ellipse, and fitting a line through a two-dimensional point set by seeking sumi rho(ri); and (5) demarcating and outputting insulator pixels. The invention aims at specific requirements of patrol and examination of a helicopter or a robot to an electric transmission line, realizes real-time and precise extraction of the insulator, provides solid foundation for realizing close shot and part defect diagnosis of a follow-up camera, and has favorable theory and application prospect.

The invention discloses an automatic photography control device for a power line inspection unmanned aerial vehicle, and a control method thereof. The automatic photography control device is fixed on metal structure at the front end of an unmanned aerial vehicle body and located above a detection head. The automatic photography control device mainly comprises a control circuit and a battery. The control circuit and the battery are disposed in a box. The control circuit comprises a single-chip microcomputer, a servo steering engine, a wireless receiver, an LCD (liquid crystal display), keys, a camera photography control module, a power management module, and a battery. The single-chip microcomputer is respectively connected with the servo steering engine, the wireless receiver, the LCD, the keys, the camera photography control module, the power management module and the battery. The battery is further connected with the power management module. The automatic photography control device is obtained according to experiments and practical needs in power line inspection with the unmanned aerial vehicle, and allows the unmanned aerial vehicle to take photos efficiently, quickly and simply during power line section.

This invention is a robot walking automatically along 110kV transmitting wire and its operational method. It is composed of the robot reality, the control device, the sensor, the detecting device and wireless image transmitting device; the control device and the wireless image transmitting device are set in the control box in the middle of the robot reality, the position sensors are equipped at the terminals of every joint, the visual sensor CCD measuring the distance of sensors and obstacle is equipped in the front of every hand, the detecting device includes high speed vidicon and the hot imaging device connected to the robot reality through the platform. It can walk stably on the 110kV transmitting wire and automatically span all kinds of obstacles on the wire, and it replaces the human to patrol the transmitting wire and reduces the working amount of patrolling, and improves the working efficiency and detecting precision to assure the safe operation of the electric wire.

The invention provides a three-dimensional visual processing method of an extra high voltage transmission line, which comprises the following steps: synchronously acquiring laser point cloud data and digital image data along a transmission line corridor through an airborne laser radar measurement system, and carrying out three-dimensional visual processing and professional analysis in combination of line design parameters and operating parameters after data processing and three-dimensional modeling so as to provide an efficient means for the maintenance and the management of the transmission line of an electric power enterprise. The invention further provides a three-dimensional visual processing system for the extra high voltage transmission line, which comprises a three-dimensional data generation module and a three-dimensional data visual operation module, wherein the three-dimensional data generation module is used for receiving digital image data and laser point cloud data obtained by the laser radar measurement system and generating the three-dimensional scene of the transmission line corridor; and the three-dimensional data visual operation module is used for carrying out three-dimensional visual operation on the three-dimensional data of the transmission line corridor.

The invention relates to a robot for polling a transmission line. The robot comprises a mobile body; two body slipways capable of changing the relative distance are arranged on the mobile body; a positive and negative screw is arranged in the mobile body and comprises a positive screw section and a negative screw section, screw nuts are arranged on the two screw sections and fixedly connected with the body slipways, and one end of the positive and negative screw is provided with a first motor; one side of each body slipway is provided with a Y-shaped groove with narrow underside and wide upside, each body slipway is connected with a swing mechanism, a mechanical arm is fixedly arranged on the swing mechanism, the mechanical arm is provided with a clamping mechanism and a running mechanism in turn from the bottom to the top, a second screw controlled by a second motor is arranged in the mechanical arm, and a second locking nut is arranged outside the second screw. The robot has the advantages of simple structure, convenient operation, safety and high efficiency, has the capability of passing through a barrier on the transmission line with rolling or crawling, and has the function of adapting to variable curvature track copying motion.

The invention relates to a mobile robot, in particular to an inspection robot mechanism with lifting and clamping functions, which comprises a front arm, a front travelling wheel, a rear arm, a rear travelling wheel, a box body and a lifting and clamping mechanism, wherein the front arm and the rear arm are respectively arranged on the box body; the rotatable front travelling wheel and the rotatable rear travelling wheel are respectively installed on the front arm and the rear arm; the front travelling wheel and the rear travelling wheel are respectively driven by a front travelling motor and a rear travelling motor which are respectively installed on the front arm and the rear arm to run; the lifting and clamping mechanism for increasing the positive pressure of the front travelling wheel and the rear travelling wheel on overhead earth wires is arranged between the front arm and the rear arm in the box body; the lifting and clamping mechanism comprises a front clamping wheel, a rear clamping wheel, a group of lifting components and a plurality of groups of guide components; the front clamping wheel and the rear clamping wheel are installed on the lifting components; and the guide components are uniformly distributed at the peripheries of the lifting components. By adopting the clamping mechanism capable of lifting and clamping, the inspection robot mechanism of the invention can increase the positive pressure of the travelling wheels on the overhead earth wires, is favorable for running, climbing and obstacle surmounting, and has good security protection property, simple obstacle surmounting processes and short obstacle surmounting time.

The invention discloses an optimal route selection method for overhead transmission line route. Onboard lidar equipment is adopted to acquire laser point cloud data and aerial digital photo data of the transmission line route corridor range; the onboard lidar data is processed after the wave filtering and the sorting of the laser point cloud data, and the points of the ground surface are made into a digital elevation model with high precision; then data processing is carried out by utilizing the data of the digital elevation model with high precision and ortho-rectification is carried out to the aerial photo by utilizing the internal and external orientation elements of the aerial digital photo to generate digital orthophoto maps; through the overlying of the digital elevation model and the digital orthophoto maps, the tridimensional visualization of the transmission line route corridor can be realized to optimize the transmission line route selection; finally prearrangement of power pole and power pole arrangement are carried out according to the data of plane cross sections. The route selection platform of the invention has simple operation and lifelike tridimensional scene, thus being convenient for full roaming and multi-view observation and greatly improving the efficiency of the inner plane cross section survey operation. Compared with the optimal route selection technology based on the aerial photographing measuring method, the efficiency of the inner plane cross section survey operation can be improved by about 75 percent.

FIG. 1 is a perspective view of transmission tower 10, phase conductors 12, insulators 14, and shield wires 16. They are to be inspected by unmanned aerial vehicle UAV 20 with embedded processor and memory 22, radio 24, location rover 26, and camera 28. Base station 30 has processor and memory 32, radio 34, and location base 36. The relative location between UAV 20 and base station 30 can be accurately calculated by location base 36 and location rover 26 communicating over radios 24 and 34. Camera 28 on UAV 20 is first used to capture two or more orientation images 38 and 39 of tower 10; lines 12 and 16; and insulators 14 from different vantage points. Terrestrial or close-range photogrammetry techniques are used create a three dimensional model of tower 10; lines 12 and 16; and insulators 14. Based on inspection resolution and safety objectives, a standoff distance 50 is determined. Then a flight path with segments for ascent 40, one or more loops 42, 44, 46, and a descent 48 is designed to ensure full inspection coverage via inspection images like 52 and 54.

An implantable lead is provided that includes a lead body configured to be implanted in a patient. The lead body has a distal end and a proximal end, and a lumen extending between the distal and proximal ends and includes a connector assembly provided at the proximal end of the lead body. The connector assembly is configured to connect to an implantable medical device and includes an electrode provided proximate to the distal end of the lead body with the electrode configured to at least one of deliver stimulating pulses and sense electrical activity. A multi-layer coil is located within the lumen and extends at least partially along a length of the lead body. The coil includes a first winding formed with multiple winding turns, the winding turns being segmented in an alternating pattern of insulated segments and non-insulated segments along the length of the lead body. The multi-layer coil further includes a winding turn connective layer extending along and interconnecting the winding turns within at least one of the non-insulated segments. The multi-layer coil further includes a first winding formed with multiple winding turns, the winding turns being segmented into an alternating pattern of insulated segments and non-insulated segments along a length of the winding with a winding turn connective layer extending along and interconnecting the winding turns within at least one of the non-insulated segments.

The invention discloses a suspended line walking robot which comprises a walking part and a suspending cabin, wherein the walking part consists of two trunks and three driving wheel claws; the two trunks form double parallelogram structures; the three driving wheel claws are guaranteed to face toward the same direction; five motors on the trunks drive the trunks to longitudinally swing, transversely swing and stretch to ensure that each obstacle detouring driving wheel can realize three-freedom-degree translational upper and lower lines; each driving wheel claw comprises a driving wheel and a clamping device, and the motors drive the driving wheels to ensure that the robot moves on the line; each clamping device comprising a motor, a ball screw pair, a spring, a clamping wheel, and the like guarantees that enough friction force is maintained between the driving wheels and the lines; the suspending cabin and the walking part are connected through two steel belts; and two motors on the suspending cabin adjust own gravity center position relative to the trunks through a steel belt so as to guarantee the flexibility of the mechanism while crossing an obstacle. The invention guarantees that the line walking robot can cross various line obstacles including corner line towers, can climb a diagonal tensile line larger than 60 degrees, has high safety factor and can replace man power to realize autonomous line walking.

An insulator bushing wildlife guard having features for easier alignment and installation of the guard on the bushing. The guard has two hinged body sections of insulating material. An outer edge of each body section is provided with a plurality of flexible fingers that allow conductors to pass through from the interior to the exterior of the enclosure when the two portions of the guard are engaged. In one embodiment, the guard is spring biased toward a closed position. A handle on the back has inner grooves to make it easier to grasp and manipulate the guard using a shotgun stick. On a lower front side of each portion of the guard, spaced-apart, curved, horizontal upper and lower flanges help align the guard with the topmost skirt of a bushing. Medial walls having a curved, sloped, concave or otherwise inwardly-directed configuration between the two flanges facilitate forcing the guard open by pushing it against the bushing. An external tab limiter, disposed above the upper flange, makes it difficult to install the guard over any part of the bushing other than the topmost skirt of the bushing. An alternative version of the guard has a releasable trigger, which is used to hold the two portions in an open position until the bushing or power line displaces the trigger and allows the biasing spring to close the two cover portions. The guard is provided with a handle for grasping by a manipulator tool. In one embodiment the handle is provided with inner grooves for grasping by a shotgun stick. In another embodiment, an adapter releasably engages the handle and provides means for attachment to a hotstick.

The invention relates to a multi-rotor-wing automatic positioning detector used for a transmission line. A patrol nacelle of the detector is fixedly connected with a multi-rotor-wing micro air vehicle by a connection structure; a master control board is fixed on the airframe of the multi-rotor-wing micro air vehicle; a power supply module is fixed on the patrol nacelle; a crawling mechanism is formed by a power device fixed on a side arm of the patrol nacelle and idler wheels connected with the power device; the master control board controls the power supply module to supply power for a driving mechanism of the multi-rotor-wing micro air vehicle or the power device of the crawling mechanism; an infrared video camera and a visible light camera are arranged on the inner wall of the patrol nacelle; the visible light camera is used for shooting the transmission line and the ambient environments and transmitting the information of the shot images to a ground station system by the master control board in real time; and the infrared video camera is used for detecting faults of the transmission line and transmitting the fault information to the ground station system by the master control board in real time. The multi-rotor-wing automatic positioning detector can be used in fields, has the advantages of high working efficiency and good safety, and has a real-time visual patrol function.

The telescopic joint type robot for superhigh voltage live cleaning is used in cleaning. The robot has hand claw connected to small arm via the first joint, hand claw rotating oil cylinder with piston rod hinged to hand claw and cylinder hinged to small arm, small arm connected to the large arm via the second joint, small arm rotating oil cylinder with piston rod hinged to small arm and cylinder hinged to large arm, large arm fixed onto the rotary platform, rotary platform fixed onto movable carrier, automatic hydraulic leveling system and cradle head on the movable carrier and remotely controlled operating terminal for data exchange with central control system via radio communication. The present invention has less joints, simple structure, light weight and easy working and assembling, and may position ceramic insulator accurately.

The invention relates to an inspection robot walking and clamping mechanism with fault release function. The inspection robot walks on an overhead power transmission line and includes a walking mechanism and a clamping mechanism arranged on a support. The clamping mechanism comprises a clamping motor arranged on the support; a drum arranged on the output shaft of the clamping motor; and a front clamp and a rear clamp having the same structure and rotatably arranged on a front bracket and a rear bracket of the support through a sector gear, wherein windings on the drum are respectively connected with the tail ends of one pawls of the front clamp and the rear clamp through a front pulley and a rear pulley fixed on the support; the front clamp and the rear clamp are respectively located on the front side and the rear side of a walking wheel of the walking mechanism; each clamp includes two pawls; the tail ends of the pawls are connected with each other through a spring; and the two pawls are engaged with each other through the sector gear. By adopting the wheel-pawl composite mechanism of walking mechanism and the clamping mechanism, the inspection robot walking and clamping mechanism facilitates walking and barrier crossing of the inspection robot to achieve good safe protection. In addition, the inspection robot walking and clamping mechanism has fault release function and suits field operation and on/off transmission line.

The invention discloses a device and method for laser remote removal of foreign matter on a transmission line. The device comprises a laser, a numerical control base, a light beam collimator, a visible indicating light unit, a scanning galvanometer, a distance measuring instrument, an electronic telescoping sighting device, a controller and an emitting barrel. By the adoption of the device and method, only one operator is needed, large-sized equipment or other auxiliary equipment is not needed, the operator does not have to climb a tower or a rope ladder, environment conditions such as the terrain and the line height do not needed to be considered, the device simply needs to be adjusted so as to be aligned to a target and emit lasers, the foreign matter can be removed or shot down within tens of seconds, the operator do not make any contact with facilities and equipment of the transmission line in the whole process, hot-line work can be conducted, the foreign matter on the transmission line can be remotely, rapidly and safely removed in time, and the application prospect is good.

The invention provides an unmanned plane patrol method and system. The method comprises steps that a data acquisition step, the data is acquired; a facial area generation step, a facial area object is generated; a task sub area planing step, the DEM data is processed through GIS buffer area analysis to generate the facial area object, and the facial area object is divided into multiple sub areas according to a height difference threshold of an unmanned plane; a course data generation step, the preliminary course data is sequentially connected to generate the course data; a patrol data acquisition step, the unmanned plane flies along a line determined by the course data and acquires the patrol data, and the patrol data comprises the original image data and the POS data; and an automatic line defect analysis step, a power line dangerous point interpretation result is automatically generated. Through the method, automatic patrol of the unmanned plane is realized through automatic task area patrol planning and automatic line defect analysis of the unmanned plane.

The invention discloses an inspection robot for ultra-high voltage power transmission lines, which is characterized by comprising a robot main body (3), walking and clamping mechanisms and a charging device, wherein the robot main body (3) has a framed box structure and comprises a control device, a detection device and a wireless image transmission device; each walking and clamping mechanism comprises a walking mechanism (1) and a clamping mechanism (6); two sets of the walking and clamping mechanisms are provided and are connected with the robot main body (3) by arms (5) having a structure of a hollow tube; and the charging device is positioned on the two sides of the robot main body (3) and connected with the robot main body (3) by a hinge (15). The inspection robot has the advantages of greatly improving the working efficiency and meeting requirements of specific robots for overhead operation, along with simple structure, easy implementation, light weight, safety, and environmental protection.

The invention provides a power line inspection apparatus comprising a vehicle body to which is mounted a power line traversal means, a power line inspection means to draw power from a power line to which it is attached, in use.

The invention discloses a rapid image-recognizing method of a power line profile. The method comprises the following steps: (1) conversing a shot color image into a grey image by brightness calculation and extracting the border profile of the image; (2) adopting an improved probability Hough transformation method to make self-adaptive adjustment of a line segment length and a statistics number obtained from the image in a known region; (3) adopting fitting of a line and a direction template for the two-dimensional fitting of a direction pixel template and a distance pixel template with linear characteristics and realizing linear fitting by deriving sumi rho(ri); and (4) calibrating and outputting power line pixels by storing and displaying the finally detected and calibrated linear pixels in a polar coordinate mode or a rectangular coordinate mode. Aiming at the concrete requirements of helicopters or robots for inspecting transmission lines, the invention precisely extracts the transmission lines in real time, provides a solid foundation for the subsequent zoom-in shooting of a camera and the defect detection of parts hereafter and has favorable theoretical and application prospects.

The present disclosure provides a wildlife guard for electrical power equipment including a disc having a central opening for fitting onto the equipment. The disc includes an electrically insulating material with a conductive filler material in quantity sufficient for the disc to maintain an electrostatic charge. The disc has an insertion slot extending from an outer portion to the central opening for movement of the disc onto the equipment. The present disclosure also provides a wildlife guard for an electrical insulator bushing having an electrical conductor extending outwardly therefrom. The wildlife guard includes an electrically nonconductive cover for covering at least a portion of the electrical conductor, the cover being adapted to mount upon the bushing and a conductive panel attached to the cover.

The invention relates to a split line moving platform. A power transmission lead is used as a working path in the platform, various barriers (a vibration damper, a crimping pipe, a spacing bar, a suspension line clamp, an insulator string and the like) are spanned and avoided, the platform is provided with a camera which can observe the condition of the running line and timely discover the defects of the line and hardware tools, and other working mechanical arms can be expanded to finish clearing line barriers and the like. A robot has flexible action and large working range, has the effect of protecting devices during jumping the barriers, and has high safety and reliability. The platform mainly consists of a traveling device, a driving arm device, an anti-tilting device and a power supply control box; and the traveling device is arranged on an electric cable and connected with the driving arm device, and the anti-tilting device is arranged at the tail end of the traveling device.

The invention discloses a method and a two-connection board device for replacing tension insulator strings of high-voltage transmission lines with upspinning and charging. The insulator strings are loosened first by using special tools such as end wing clips and insulating pull plates; The pulleys and screw rods on the side make all the ends of the insulator strings disengage; finally, the pulleys on the ground wire brackets are used to rotate the porcelain bottle strings from the horizontal state to the vertical state, thus changing the complex operation into a relatively simple operation, which greatly shortens the time Potential working time to ensure the safe operation of the line; live replacement of the high-voltage transmission line tension insulator string double-connected plate device, including two wing cards and two screw screws, and also includes two pairs of insulating pull plates, one end of the two pairs of insulating pull plates They are respectively connected with two wings of the wing card, and the other ends are respectively connected with a lead screw, and the other ends of the two lead screws are respectively connected with the two wings of the other wing card. The structure is simple, easy to operate and low in cost.