68results about How to "For precise control" patented technology

An intelligent control method, equipment and medium based on a flue gas desulfurization process belong to the technical field of dry and semi-dry desulfurization, solve the problem of how to improve the working condition adaptability of dry and semi-dry desulfurization processes, and comprise the following steps: a feedforward prediction step: based on historical operation data, predicting the theoretical addition amount of a desulfurizer through a feedforward prediction model; a feedback correction step: dynamically correcting the theoretical addition amount of the desulfurizing agent based on the real-time SO2 concentration deviation, obtaining the final addition amount of the final desulfurizing agent, executing the final addition amount, and performing secondary correction according to the execution result; a model iteration step: continuously optimizing the feedforward prediction model based on incremental data generated in a system operation process; according to the method, the deviation mode is analyzed by verifying the outlet SO2 concentration data in real time, secondary correction is executed, correction strategies are customized for various complex working conditions, the working condition adaptability of dry-method and semi-dry-method desulfurization processes is effectively improved, and accurate prediction and real-time control of the SO2 emission concentration are guaranteed.

The invention relates to the technical field of ferrous metallurgy casting, in particular to a drainage sand removing and recycling method and device. Comprising a mechanical arm, a lifting rotation controller, a controller arm, a sand suction cylinder, a sand conveying pipeline, a sand collecting tank and an injection pump. The lifting and rotating controller is fixedly mounted on the mechanical arm; the controller arm is connected with the lifting and rotating controller, and the lifting and rotating of the controller arm are controlled by the lifting and rotating controller; the sand suction cylinder is connected with the controller arm, the sand suction cylinder is of a U-shaped structure, and one end of the sand suction cylinder is a horn mouth used for sucking drainage sand; one end of the sand conveying pipeline is positioned above the tundish cover sprue gate, and the end part of the sand conveying pipeline is bent downwards to be connected with the other end of the sand suction cylinder; the other end of the sand conveying pipeline is connected with the sand collecting tank; the sand collecting tank is connected with an injection pump pipeline, and the injection pump provides suction power. The ladle filler sand, harmful gas in gaps of the ladle filler sand and a long nozzle and a small part of molten steel in contact with the ladle filler sand in a steel ladle can be discharged out of tundish molten steel and recycled.

The application relates to the technical field of infrared emission tube row production equipment, and discloses an infrared emission tube row discharging and stacking mechanism, which comprises a shell and a material collecting frame. Two vertical plates are fixedly connected with mounting seats at the upper ends, the mounting seats are fixedly connected with four positioning columns arranged in a rectangular array at the upper ends, the bottom end of the material collecting frame is provided with four positioning grooves arranged in a rectangular array, one side of the material collecting frame is fixedly connected with two guide rods arranged in a mirror image, one end of the material collecting frame away from the guide rods is fixedly connected with a handle, the upper end of the shell is fixedly connected with a conveying groove body, and one side of the conveying groove body is fixedly connected with a photoelectric sensor. The infrared emission tube row discharging and stacking mechanism is characterized in that the positioning columns on the mounting seats are matched with the positioning grooves at the bottom end of the material collecting frame, the accurate positioning and stable placement of the material collecting frame on the mounting seat are realized, the position of the material collecting frame is accurate and correct in the subsequent discharging and stacking process, and the stacking quality and product integrity are guaranteed.

This application provides a motion control method and system for an automated battery electrolyte filling process, comprising: acquiring the position information of each joint of a robotic arm; calculating the instantaneous position and orientation of the filling needle in three-dimensional space based on the position information of each joint and the kinematic model of the robotic arm; comparing the calculated instantaneous position and orientation of the filling needle with a preset ideal motion trajectory of the filling needle; determining the deviation between the actual spatial state and the ideal spatial state of the filling needle based on the comparison result; generating compensation commands for adjusting the motion of each joint of the robotic arm based on the deviation; and sending the compensation commands to the servo driver of the robotic arm to adjust the motion of each joint of the robotic arm. This application can improve the accuracy of battery electrolyte filling and product yield.

The invention provides a weak illuminometer calibration system and calibration method. The method specifically comprises the following steps: S1, determining a calibration coefficient of a measurement system; s2, calculating to obtain a corresponding illumination correction factor; and S3, calculating a standard micro-illuminance value of the calibrated illuminometer by combining the display value of the first luminosity detector, the calibration coefficient and the illuminance correction factor under the corresponding aperture, and obtaining a relative indication error of the calibrated illuminometer by comparing a response value Ex of the calibrated illuminometer with the standard micro-illuminance value. Based on a highly-integrated linear optical system, the problems that in a traditional mode, the calibration process is tedious and prone to being interfered by the environment, errors are transmitted step by step, and precision is insufficient due to light intensity attenuation are solved, efficient, high-precision and traceable calibration in a weak illumination interval is achieved, operation is easy and convenient, and cost is low.

The invention discloses a measurement and control method and a measurement and control device for preventing hydrogen sulfide corrosion of an oil well, and relates to the technical field of environmental protection. A stabilization method that a temperature sensor and a liquid level sensor are used for detecting the excessive amount of output zinc carbonate in the working environment of a medicament storage tank, a monitoring method that a 5G data transmission gateway is used for transmission and a central control system is used for monitoring the content of hydrogen sulfide are adopted, the injection amount of the medicament is comprehensively controlled and adjusted, and corrosion of hydrogen sulfide to the wall of an oil casing is prevented; corrosion and permeation to a gathering and transportation pipe network and equipment are prevented, the service life of the whole system from the well bottom to the gathering and transportation pipe network is prolonged, huge maintenance funds are reduced, and a new way for preventing hydrogen sulfide corrosion is developed for an oil field.

The invention belongs to the technical field of display driving, and particularly relates to a gate driving circuit, a local brush control method and a display panel, and an nth gate driving module comprises a pre-charging unit, a local brush control unit and an output unit; wherein the local refreshing control unit is used for responding to a first control signal output by a first control signal end in a full scanning frame in a local refreshing mode, and forming and maintaining a local refreshing pre-stored voltage on a voltage pre-stored node; pre-charging the driving control node according to time sequence cooperation of a local brush pre-stored voltage, a second control signal output by a second control signal end and a third control signal output by a third control signal end in a refresh starting line of a local brush frame in a local refresh mode; according to the invention, the local brush control unit is arranged between the pre-charging unit and the driving output unit, so that the refreshing starting line of the local brush frame can independently start scanning without depending on a preceding stage transmission signal, thereby improving the error output problem of a local refreshing edge position.

The application provides a copper-aluminum dissimilar metal resistance brazing method for a wind power generator, comprising the following steps: S1, temperature field regulation of partition resistance heating: a partition resistance heating mode of double-electrode independent power supply is adopted, current is respectively input to the copper side and the aluminum side for independent control, and the brazing interface temperature is controlled in the range of 580-620 DEG C; S2, interface diffusion control of nano nickel barrier layer: a nano-crystalline nickel barrier layer is prepared in advance on the surface of the copper matrix to be connected; S3, wetting and filling of zinc-based composite filler material: zinc-based composite filler material is used for brazing; S4, pressure-assisted brazing seam densification: axial pressure in the range of 0.5-2 MPa is applied during brazing; S5, atmosphere protection and surface activation: the brazing process is carried out under the condition of inert protective atmosphere. Through the cooperation of partition heating and nano nickel barrier layer, the strength of the copper-aluminum brazed joint is improved to more than 80% of the base material, and the contact resistance is reduced to 3 mu omega cm 2 The energy consumption of the single piece is reduced by 80%, and the qualified rate reaches more than 95%.

This invention provides an automated screw placement system and an orthopedic surgical robot, comprising: a Kirschner wire, including a wire body and a needle tip, the wire body and the needle tip being fixedly connected, the needle tip including a needle point located at the end of the needle tip; a pedicle screw, including a screw body and a milling assembly; and a power platform, including a wire placement module and a screw placement module. The wire placement module is used to place the Kirschner wire into the patient's spine, and the screw placement module is used to place the pedicle screw into the pedicle of the patient's spine. Through the collaborative design of the wire placement module and the screw placement module, the Kirschner wire positioning and screw implantation process are integrated into the same robotic arm operating platform. With the command control of the robot system, the operation time is significantly shortened, the surgical risk is further reduced, and the entire process from Kirschner wire placement to pedicle screw placement is automated.

The utility model discloses a gang saw automatic lubricating device relates to steel production equipment technical field, include: guide component, lubrication supply system and trigger mechanism, and guide component includes guide post and guide sleeve, and the outside of guide sleeve is fixedly connected with saw blade driver, lubrication supply system includes oil reservoir, plunger pump and two lubricating oil pipes, and the oil reservoir is installed in the top of saw blade driver to store lubricating oil, and the plunger pump is installed in the top of oil outlet ware, and the oil inlet of plunger pump communicates with oil reservoir, and the oil outlet of plunger pump communicates with lubricating oil pipe to deliver the quantitative lubricating oil to guide sleeve, trigger mechanism is installed on the guide post to when saw blade driver rises to the top set position, trigger mechanism and plunger pump contact pressurization and make plunger pump supply the quantitative hydraulic oil to guide sleeve, simple structure, convenient to use, realizes the automatic lubrication of gang saw guide sleeve under the condition of not introducing the complex electric control system, effectively improves the stability of gang saw equipment operation.

The application provides a method and equipment for processing microstructures by controlling Bessel laser side lobes, and is used for solving the problem that Bessel beam side lobe energy is not effectively utilized and it is difficult to realize high-quality and high-efficiency processing in the prior art. The application specifically comprises the following steps: in a first axial region, adjusting the number of sub-pulses of a burst pulse and laser power to determine first laser parameters that can make the main lobe process deep micro-holes and inhibit the side lobe processing; in a second axial region, adjusting corresponding parameters to determine second laser parameters that can make the main lobe and the side lobe processing region fuse to form a continuous Y-shaped groove; then, according to the obtained parameters, arch-shaped scanning is carried out in the two axial regions respectively, and high-depth-ratio micro-holes and micro-taper structure arrays are sequentially processed. The application realizes accurate control and utilization of Bessel side lobes by optimizing the parameters of Bessel burst pulses in different axial regions, and provides a technical scheme for high-performance manufacturing of special antireflection optical windows in aviation and aerospace.

The application relates to the technical field of industrial automation, and provides a device testing method and system, an electronic device and a computer readable storage medium, the method comprises the following steps: being applied to a device testing system, the device testing system comprises a plurality of devices to be tested, each device to be tested is connected with a physical port of a switch, the switch is connected with a test server, a structured configuration file is analyzed to obtain a device mapping relationship. Based on the device mapping relationship, a plurality of virtual network interfaces are created, and a corresponding network protocol address is allocated to each virtual network interface. An independent routing table is established for each virtual network interface, and a source network protocol address of the virtual network interface is bound to the routing table. Address resolution protocol response control parameters are set for each virtual network interface. A plurality of logically isolated virtual network interfaces can be automatically created, an automatic configuration driven testing environment can be built, and the testing efficiency is improved.

The utility model discloses an AC-AC chopping electronic transformer, which comprises a bus power supply unit, a chopping unit, a protection output unit, a current sampling unit, a voltage sampling unit, a control unit and a frequency zero crossing point sampling unit, the bus power supply unit is connected with the chopping unit; the chopping unit is connected with the protection output unit; the current sampling unit and the voltage sampling unit are respectively connected with the protection output unit; the current sampling unit and the voltage sampling unit are respectively connected with the control unit; the bus power supply unit is connected with the frequency zero crossing point sampling unit; the frequency zero crossing point sampling unit is connected with the control unit. By means of the transformer, the control precision can be improved, dynamic real-time monitoring is achieved, and the overload protection capacity is enhanced.

This utility model belongs to the technical field of automotive electrochromic lenses, specifically disclosing an automotive anti-glare rearview lens with an improved conductive structure. It includes a front glass substrate, a rear glass substrate, a front transparent conductive layer and a rear mirror conductive layer respectively disposed on their inner sides, and an electrochromic layer structure sandwiched between them. Grooves are provided on the mating surfaces of the front and rear glass substrates for embedding a conductive structure composed of conductive silver paste, which is connected to the conductive layer. It has the following advantages: it achieves an embedded low-resistance conductive path, effectively improves the uniformity of electrochromic coating, enhances the bonding force between the conductive structure and the glass, avoids the problem of easy detachment of traditional screen-printed conductive layers, improves lens reliability and assembly yield, and is suitable for the structural compatibility requirements of frameless rearview mirror designs.

This invention discloses a device and method for evaluating the proppant-carrying performance of fracturing fluid with continuously adjustable proppant concentration, relating to the field of oil and gas field production enhancement. The device includes a reactor body. The reactor body is equipped with a stirring assembly, a proppant-adding assembly, a heating assembly, and a visualization window. The proppant-adding assembly achieves quantitative and batch-wise addition of proppant within the high-pressure reactor through a series of upper valves, a proppant-to-be-added section, and a lower valve. The method includes: applying experimental temperature and pressure conditions, initiating stirring to simulate dynamic flow, continuously adding proppant in batches through the proppant-adding assembly, monitoring the proppant status in real time using a vision system, and recording and analyzing data to obtain a continuous proppant-carrying performance curve and a limit proppant-carrying value. This invention solves the problem of existing technologies being unable to conduct continuous gradient testing of proppant concentration under high-temperature and high-pressure dynamic conditions, and can obtain complete proppant-carrying performance data of fracturing fluid from low concentration to limit concentration in one go, with evaluation results closer to actual downhole operating conditions.

The utility model discloses a double-channel vertical radian product detection mechanism, which comprises a left test frame, a right test frame, a rapid adjustment track, a three-stage rapid adjustment mechanism and a driving cylinder, and the left test frame and the right test frame are respectively provided with an independent driving cylinder and an independent rapid adjustment track. The three-stage rapid adjusting mechanism is installed on the top of the driving air cylinder, and the problems that in the existing experiment process, operation is complex, the experiment period is long, and potential safety hazards are large are solved through the rapid adjusting track and the three-stage rapid adjusting mechanism; by means of automation and accuracy, products of different specifications can be rapidly positioned and adjusted, the experiment efficiency is improved, meanwhile, the stability and safety of the experiment process are ensured, and therefore the performance and use safety of the products are guaranteed.

The utility model relates to the technical field of raw material mixing, one embodiment of the utility model provides a feeding mechanism for powdery raw material mixing, the feeding mechanism comprises a supporting frame, a fixing plate is fixedly connected to the side surface of the supporting frame, a feeding box is fixedly connected to the top of the fixing plate, and a discharging pipe penetrates through the bottom of the feeding box; a feeding device is arranged at the top of the fixing plate and comprises a supporting rod, the supporting rod is fixedly connected to the top of the feeding box, a protective sleeve is fixedly connected to the top of the supporting rod, a reciprocating lead screw penetrates through the top of the protective sleeve, and a threaded block is in threaded connection with the circumferential face of the reciprocating lead screw. By means of the technical scheme, the technical problems that in the prior art, the effect of controlling opening and closing of the discharging opening is difficult to achieve, accurate control over the feeding process is difficult to guarantee, and excessive or insufficient feeding caused by other factors is difficult to avoid are solved.

The invention discloses a control method and device of transcranial electrical stimulation equipment, electronic equipment and a storage medium, the control method of the transcranial electrical stimulation equipment can be applied to the technical field of brain-computer interfaces, the transcranial electrical stimulation equipment comprises a plurality of electrodes, and each electrode is used for being in contact with a target stimulation object. Carrying out transcranial electrical stimulation and electroencephalogram signal acquisition on the target stimulation object; the method comprises the following steps: in a transcranial electrical stimulation process, acquiring electroencephalogram signals acquired by a plurality of electrodes; based on the electroencephalogram signals collected by the multiple electrodes, the contribution degree of each electrode to transcranial electrical stimulation is adjusted; for each electrode, updating a target electrical stimulation parameter corresponding to the electrode based on the initial electrical stimulation parameter corresponding to the electrode and the adjusted contribution degree corresponding to the electrode; and controlling the electrode to perform transcranial electrical stimulation based on the updated target electrical stimulation parameter corresponding to the electrode. According to the transcranial electrical stimulation system and method, individuation and accurate control of each electrode are achieved, and the effect and safety of transcranial electrical stimulation are improved.

The utility model relates to a sample pretreatment system for anhydrous acid detection. The sample pretreatment system for anhydrous acid detection comprises a mounting box as well as a V1 multi-way valve, a V5 multi-way valve, a first quantitative loop and an air inlet pipe which are positioned in the mounting box, and further comprises a V3 multi-way valve, a V4 multi-way valve, a V6 multi-way valve, a V7 multi-way valve, a peristaltic pump, a second quantitative loop, a third quantitative loop, a waste liquid injection pump, a carrier liquid injection pump and a diluent injection pump which are positioned on the outer side of the mounting box, a plurality of valve ports of the V1 multi-way valve are communicated with the anhydrous acid liquid inlet pipe, and the gas inlet pipe is communicated with the valve port of the V1 multi-way valve and one valve port of the V5 multi-way valve through the three-way valve; and one valve port of the V5 multi-way valve is communicated with a waste liquid pipe. According to the utility model, through the split design of the mounting box and the fixed box, the space layout is optimized, the multi-way valve through which the anhydrous acid does not flow cannot be damaged when the anhydrous acid with strong corrosivity leaks, only the multi-way valve in the mounting box needs to be replaced, the maintenance cost is low, and the use safety is high.

The utility model relates to the technical field of geological survey water injection test, disclose a water injection test device for water conservancy and hydropower engineering geological survey, including the bottom plate, the upper left side fixedly connected with water tank of bottom plate, the upper fixedly connected with water pump of water tank, the output fixedly connected with water pipe of water pump, install the flowmeter on one side of water pipe, one end fixedly connected with water box of water pipe, the right side bottom fixedly connected with water injection pipe of water box, the outside installation of water injection pipe lower side pressure sensor, the outside installation of pressure sensor is counterweight ring, the front and back both sides of water box all are fixedly connected with T block, the front side installation of T block front side is driven assembly, driven assembly is used for driving water injection pipe to move down and carries out water injection to the hole that hits.

The utility model relates to the field of pipe bending device, especially a bending device for steel structure production, including unilateral clamping mechanism, reinforcing bar guide pulley group, connecting rod, elbow, installation platform, limiting plate, because the length of the placement chute is less than reinforcing bar, when reinforcing bar moves to the root of placement chute, cylindrical slide block sticks to reinforcing bar one side wall surface, guide pulley sticks to reinforcing bar another side wall surface reinforcing bar, clamps reinforcing bar, thereby reduces the placement time of many reinforcing bars, and when placing reinforcing bar, artificial both hands hold the both ends of reinforcing bar, because artificial both hands as support point and reinforcing bar both end distance is close, thereby the stability when placing reinforcing bar is high, and the both ends of reinforcing bar are respectively inserted into two placement chutes.

The utility model relates to the technical field of metal processing, in particular to a metal surface grinding machine. A metal surface grinding machine comprises a base, a protective shell and protective doors, the protective shell is fixedly connected to the periphery of the upper portion of the base, the protective doors are rotationally connected to the two sides of the front portion of the protective shell, a machining table is fixedly connected to the top of the base, and the metal surface grinding machine further comprises the machining table, an electric sliding rail, an electric sliding block, an electric push rod, a connecting frame and a grinding assembly. An electric sliding rail is horizontally installed on the top in the protective shell, an electric sliding block is slidably connected to the lower portion of the electric sliding rail, an electric push rod is installed at the bottom of the electric sliding block, a horizontally-transversely-arranged connecting frame is fixedly connected to the telescopic end of the electric push rod, and a grinding assembly is installed on the lower portion of the connecting frame. Through a three-dimensional moving system composed of the electric sliding rail, the electric sliding block and the electric push rod, accurate control and positioning of the polishing assembly are achieved.

The invention relates to the technical field of transformer scheduling, in particular to an oil-immersed transformer scheduling and response system and method for power grid stability, and the method comprises the following steps: synchronously collecting the real-time operation state data and environmental meteorological data of a transformer; dynamically correcting a heat dissipation coefficient of a transformer thermal model based on the real-time air pressure; a winding hot-spot temperature dynamic change track is generated through the transformer thermal model; based on the dynamic change track, the multi-dimensional dynamic hot redundancy is calculated in parallel; taking the multi-dimensional dynamic hot redundancy as a core constraint, performing rolling optimization scheduling through model prediction control, and generating a coordination control instruction of the transformer and the new energy station by taking maximization of the total consumption amount of the new energy and minimization of the load fluctuation of the transformer in a scheduling period as optimization objectives; and executing the coordination control instruction to dynamically adjust the operation state of the power grid. According to the invention, collaborative improvement of transformer dynamic load safety and new energy efficient consumption can be realized.

The application discloses a kind of intelligent anti-seismic structure optimization design method and system for high-rise building, it is related to high-rise building anti-seismic design technical field, including taking seismic intensity zoning, site category and fault distribution information, establish the working condition database considering multi-directional ground motion and soil-structure interaction in combination with ground motion time history and site survey parameters;Structure model is constructed in BIM platform and is imported frequency characteristics and load to generate preliminary design;Inter-story drift angle, floor acceleration, plastic rotation and energy dissipation ratio index are set in the model, construct seismic performance comprehensive function, set constraint according to specification limit, convert structure model into optimization problem, realize optimization design by iteratively calling working condition database and automatically correcting key component parameters and damping arrangement.The method described in the application realizes the structure optimization design of high-rise building under multi-directional seismic action by establishing seismic working condition database, parameterized structure modeling and performance function constraint.

The application belongs to the technical field of electrical components, and particularly relates to a fuse, which comprises a body, a cavity arranged in the body, a fuse core arranged in the cavity, an insulating shell, an arc extinguishing medium and a fuse body, the fuse body is encapsulated in the insulating shell, the arc extinguishing medium is filled in the insulating shell and wraps the fuse body, the fuse core is respectively provided with a main contact at two ends, the cavity is provided with a facing anti-deviation unit, the facing anti-deviation unit comprises a rotating shaft installed in the cavity and a winding roller installed on the rotating shaft, the winding roller is connected with a cable, the body is provided with a handle dismounting device, the handle dismounting device comprises a retaining guide block installed in the cavity, the retaining guide block is located at the top end of the fuse core, and a retaining guide cylinder is connected to one side of the retaining guide block close to the fuse core, so that a novice can conveniently replace the fuse body, the practical application limitation of the fuse is reduced, and the use effect is improved.

The invention discloses a dynamic updating method and device and a storage medium. The method comprises the steps that a dynamic updating configuration instruction is received through a graphical user interface; generating a standardized dynamic update file based on the dynamic update configuration instruction; analyzing the standardized dynamic update file, and determining a target server and a target process to be updated according to an analysis result; establishing a communication connection with the target server, obtaining an update state of the target process through the communication connection, and judging whether the target process can execute an update operation or not based on the update state; and if the target process can execute the update operation, sending the update instruction content to the target process through the communication connection to execute a dynamic update operation. According to the method, the standardized file is generated through graphical configuration, the instruction is automatically sent based on update state judgment after analysis, update automation and accurate control are achieved, human errors are reduced, and update efficiency and reliability are improved.

The present application relates to the technical fields of semiconductor processing, and specifically relates to a semiconductor wafer processing device, which comprises a cracking furnace, a material sublimation chamber and a vacuum deposition chamber. A rotating cylinder is arranged in the material sublimation chamber, and helical blades with gradually increasing outer diameters are arranged on the outer wall of the rotating cylinder near the half section of the feeding port, so as to realize gradient pushing of raw materials in cooperation with a tapered cylinder with gradually increasing inner diameters. A preheating assembly is arranged in the rotating cylinder, and the heating temperature of the heating cylinder gradually increases in the direction away from the feeding port, so as to realize gradient precise heating. A collecting mesh frame is detachably inserted into the guide frame at the bottom of the discharging port. A heating plate with heating holes and a V-shaped concave collecting plate are arranged in the cracking furnace. The elastic mounting ring and the elastic placing net are vibrated by a plurality of driving elements in the vacuum deposition chamber. The present application solves the problems of high cost, large size or uneven coating, poor adhesion and difficult maintenance of the existing equipment, and has the advantages of uniform coating, strong adhesion, high raw material utilization rate, simple operation and adaptation to small workpieces.

The utility model discloses a construction site safety inspection device for dangerous engineering. The construction site safety inspection device comprises a supporting seat arranged on the inner wall of an installation hanging seat and a rolling guide wheel which can abut against an I-shaped sliding rail in a rolling mode. The upper ends of the first connecting rod and the second connecting rod are respectively connected with the brake assembly, and the lower ends of the first connecting rod and the second connecting rod are linked through an electromagnetic assembly; the electromagnetic assembly comprises an electromagnet and a magnetic guide column which are matched in a magnetic attraction mode, and a compression spring is arranged between the electromagnet and the magnetic guide column. Through cooperation of the electromagnetic assembly and the cross hinged connecting rod, quick response and reliable action of the braking mechanism are achieved. The magnetic attraction effect of the electromagnet and the magnetic guide column is combined with the elastic reset characteristic of the compression spring, braking can be automatically triggered in the power failure or emergency situation, and the inspection device is prevented from accidentally sliding. The cross hinged connecting rod structure optimizes a braking force transmission path, reduces mechanical impact, adapts to a narrow construction environment, and improves the safety and stability of high-altitude track inspection.

The utility model discloses a temperature control type electric actuator, and relates to the technical field of actuators. The electric actuator comprises an upper shell and a lower shell, and an electric actuator is arranged in the upper shell and the lower shell. The environment temperature is monitored in real time through the temperature sensor, when the temperature reaches a set value, the control chip on the circuit board automatically controls the electric actuating mechanism to act, automatic opening and closing of the valve are achieved, manual intervention is not needed, and the automation degree and the response speed of a system are improved; the angular displacement sensor is arranged on the surface of the execution shaft in a sleeving mode, the rotation angle of the execution shaft can be accurately detected, accurate control over the opening degree of the valve is ensured, the high-precision requirement for the position of the valve in the industrial process is met, the rotation angle of the execution shaft is limited through the design of the arc-shaped through groove and the convex shaft, and equipment damage caused by excessive rotation is avoided; when the convex shaft moves to the contact switches at the two ends of the arc-shaped through groove, the control chip automatically stops driving the motor, and over-position protection is provided.