164 results about "Safety relay" patented technology

The invention discloses an automobile bumper stamping die change locking mechanism and relates to the technical field of automobile stamping dies, a stamping base is used as a basic support, vertical force bearing columns on the periphery of the stamping base are connected with a top protection plate, a central power execution cylinder of the protection plate is connected with a workpiece bearing table through a hydraulic driving rod, and an upper die opposite to a lower die is mounted at the lower end of the bearing table. According to the mold rapid locking mechanism, adjusting supporting blocks are welded to the two sides of a base table, and transmission screws on the adjusting supporting blocks can adjust the position of a locking control box; a rotating gear in the box is meshed with an L-shaped clamping arm tooth block, a rubber clamping pad at the front end of a driving arm and a rubber extrusion block in front of the box, a lower die is clamped from the periphery and the two sides, a stroke limiting supporting column of a supporting base is matched with a bearing table guiding structure to ensure stable lifting, and the bearing table is provided with an infrared mistaken touch prevention sensor and a safety relay module to guarantee safety. The upper die is detachably installed through the lifting lug plate and the fastening nut, the scrap collecting bin automatically enters and exits through the driving motor and the transmission screw, and the stamping die changing requirement of the bumper is met.

The present invention discloses a safety monitoring circuit for an equipment control system. The control contacts of a safety relay are connected in series in the control signal loop of the controller to the actuator. Only when the working condition of the safety relay is normal, its control contacts can be closed, and the actuator can act under the control of the control signal of the controller. The fault state of the controller and other emergency situations can be monitored and judged. When the controller fails, the safety relay can be automatically activated immediately to make the actuator shut down safely and automatically keep shutting down until the controller fault is eliminated and the reset button is pressed after manual confirmation. The actuator can work normally, and the actuator can be prevented from automatically re-acting after the controller fault is eliminated. The safety monitoring circuit of the equipment control system has simple circuit wiring, high safety and high reliability.

The invention relates to the field of rail transit, and particularly discloses a platform door system adopting PEDC hot standby redundancy design, a platform on each side of the system adopts at least two sets of complete and independent PEDCs, and a platform door on the same side is subjected to redundancy control by a master PEDC board and a slave PEDC board. And a safety relay group and a communication module are integrated on the PEDC board and are used for realizing door opening and closing actions and communication exchange of each interface. According to the control system in the platform door PSC cabinet, master-slave redundancy switching information is adopted by the platform on each side of the control system, and a hard line design is adopted, so that the overall safety of the platform door system is improved. The defects that when a PEDC board card breaks down in the normal operation period, a train is delayed, and a platform door cannot be linked are overcome, the problem that the PEDC board card cannot be replaced is solved, the maintainability of the platform door system is improved, and through support of alignment isolation, the situation that the platform door cannot be linked due to the fact that a train door or the platform door breaks down can be avoided. Operators operate platform doors, and consequently people stream chaos and train delay are caused.

The invention discloses an equipment emergency stop system and mechanical equipment, and belongs to the technical field of safety control. In the application, a signal reset end of a safety relay is connected in series with a normally closed auxiliary contact of a contactor; a main contact of the contactor is arranged on a power supply loop of an equipment load; a signal output end of the safety relay is connected in series with a normally open contact of the relay and then is connected with a coil of the contactor; one end of the state detection switch is connected with a power supply anode, and the other end is connected with a power supply cathode after being connected with a coil of the relay in series; and the state detection switch is used for being switched off when an abnormal state is monitored in the equipment and switched on when the abnormal state is not monitored. When the equipment is in an abnormal state, even if a worker fails to stop the operation of the equipment through the emergency stop button in time, the equipment can be automatically and rapidly stopped through the state detection switch and the relay, so that the operation safety of the equipment is improved.

The embodiment of the utility model provides a safety interlocking device of an ion implanter, which is applied to the technical field of ion implanters and comprises an emergency safety relay, and the emergency safety relay comprises a power supply unit, a plurality of safety input units and a plurality of related output units. The power supply unit is used for supplying power to the emergency safety relay, the safety input unit is respectively connected with an emergency stop circuit which is formed by connecting emergency stop devices inside and outside the ion implanter equipment in series, and each related output unit is connected with each control circuit of the ion implanter equipment. When a certain group of coils in the safety relay are adhered or abnormal, or the state of a certain emergency stop device in the emergency stop circuit changes to change the safety input unit from a normal state to an abnormal state, each control circuit of the ion implanter equipment can be disconnected, so that the problem that in the prior art, a key control device is abnormal, so that the safety input unit is in an abnormal state can be effectively solved. And the disconnection of the control circuit cannot be realized.

A traction battery device for an electric or hybrid motor vehicle, comprising a battery equipped with electrochemical cells (4), an electromagnetic safety relay (10) including a winding surrounding a core connected to a contact carrying battery current, and a return spring applying an opening force to this contact, this device including a battery management system (6) which commands a direct current to the winding in one direction to close the contact, and in the opposite direction to open this contact. Figure 1

A frequency converter remote safety parking system belongs to the field of electrical control technology and comprises a safety relay A1, three intermediate relays KA1, KA2 and KA3, a key switch-Sx and a PLC (programmable logic controller) control system. Wherein the-KA1 controls a monitoring channel of a frequency converter control unit, the-KA2 controls a monitoring channel of a frequency converter motor module, and the PLC control system is used for sending a frequency converter safe stopping instruction and monitoring whether the STO function of the frequency converter is effective or not through the-KA3; the PLC control system comprises two PLC digital quantity input channels, a PLC digital quantity output channel and a man-machine interface picture; and the normally open contact of the key switch-Sx is connected with the digital quantity input of the PLC. According to the utility model, a method for realizing remote safe stopping of the frequency converter by utilizing the safe torque function STO can be widely applied to industries such as chemical engineering, metallurgy and mechanical manufacturing.

The utility model discloses a semiconductor equipment control circuit based on a safety relay, which comprises a molded case circuit breaker, a programmable logic controller, a control loop, a first switching power supply and a second switching power supply, the input end of the first switching power supply is connected with the molded case circuit breaker, and the output end of the first switching power supply is connected with an EMO / emergency stop loop; the input end of the second switching power supply is connected with the molded case circuit breaker through the alternating current contactor, and the output end is connected with the programmable logic controller and the control loop; the EMO / emergency stop loop comprises an active dual-channel safety relay, and the active dual-channel safety relay is a relay with an indicating lamp. According to the utility model, a relay with an indicating lamp is added or another indicating lamp is added behind each or more EMO / emergency stop loop, so that the fault position of the EMO / emergency stop loop can be quickly positioned, and the fault point can be quickly repaired to realize quick recovery; meanwhile, the operation difficulty is reduced, and the operation safety is improved.

The invention provides a 3D galvanometer welding safety logic control system and method based on cooperation of hardware safety and software safety, and the system comprises a 3D galvanometer device, and also comprises two safety relays, two scram buttons, a board card and a PLC which are arranged in the 3D galvanometer device.

The utility model relates to automatic control technical field especially, and it is a kind of sound control emergency stop control device for realizing the accurate control to equipment stop or start by sound (decibel) size to ensure safe production, be equipped with sound signal acquisition circuit, controller, emergency stop control circuit, reset circuit, wherein, controller uses PLC controller, controller is connected with sound signal acquisition circuit, emergency stop control circuit, reset circuit respectively, the sound signal acquisition circuit is equipped with receiver BM and internal relay K1, the control end of internal relay K1 is connected with receiver output end, the output end of internal relay K1 is connected with the PLC controller, the emergency stop control circuit is equipped with safety relay K2, and safety relay K2 is connected in the power supply circuit of electric equipment, compared with prior art, can realize equipment fast stop, accurate control, maximizes the risk of mechanical injury in production process.

A brake control device and method with output voltage ramp start, which relates to the field of elevator control, includes a first rectifier filter circuit, a switch power supply, a brake power supply control relay, a brake voltage control circuit, a second rectifier filter circuit, a chopper output circuit, an output filter circuit, an output voltage acquisition circuit and an output current acquisition circuit. The brake power supply control relay adopts two safety relays to control the neutral line and the live line of the mains input respectively. The feedback contact signal of the safety relay is output to the input end of the elevator main control board to ensure that when the relay contact is fused, the elevator main control board can report the elevator fault and stop running to ensure the safety of the elevator operation; the chopper output circuit and the output filter circuit effectively ensure the output power of the brake power supply, which can increase the rated output power of the original component and improve the power of the entire brake voltage output. The output voltage acquisition circuit adopts a resistor voltage divider, and the output current acquisition circuit adopts a milliohm resistor for sampling.

The invention belongs to the field of automatic production line control, and particularly relates to a robot grabbing anti-collision control method and system used in an automatic production line, and the method comprises the steps: responding to a triggering signal that a robot enters a grabbing track, continuously collecting a plurality of frames of two-dimensional code images in a process that a robot gripper moves towards a workpiece, analyzing and analyzing to obtain first workpiece model data; at the moment that the gripper makes contact with the grabbed workpiece, the collection is triggered again, and second workpiece model data are obtained through analysis; performing double comparison on the parsed workpiece model data and preset target model data; if the double comparison is consistent, allowing the robot to lift and transfer the workpiece; if any comparison is inconsistent, an emergency stop program is executed immediately, the grabbing program is interrupted through a software instruction, sound-light alarm is triggered, meanwhile, a physical isolation signal is output, a safety relay coil connected in a grabbing power loop in series is cut off, the robot is made to keep the current safety posture, and collision accidents are prevented.

The utility model provides handheld laser welding equipment which comprises a welding gun, a laser device and a control device electrically connected with the welding gun and the laser device. The welding gun comprises a gun body and a handle connected with the gun body, the gun body is provided with a red light indicator, the handle is provided with a first switch and a second switch, and the control device comprises a safety relay, a first current relay and a second current relay; wherein the first switch, the first current relay and the red light indicator are electrically connected in sequence to form a red light control circuit, the second switch is electrically connected with the laser to form a laser control circuit, and the first current relay is further electrically connected with the second switch, the second current relay and the safety relay to form an interlocking circuit. According to the invention, the safety interlocking among the electrical elements can be realized, and the laser can emit light for welding only when the two switches are activated in sequence, so that personnel burn and workpiece damage caused by misoperation are avoided to the greatest extent.

The application specifically relates to a wind turbine hardware safety chain system, which comprises a safety relay, a main control input module, an emergency stop switch, an overspeed switch, a cable twisting switch, a vibration switch, a variable pitch safety chain switch, a converter safety chain switch, a main control disconnection safety chain relay switch, a control module, a main control output module and a disconnection safety connection relay, wherein the emergency stop switch, the cable twisting switch, the overspeed switch, the vibration switch, the variable pitch safety chain switch, the converter safety chain switch and the main control disconnection safety chain switch are connected in series to the input port of the safety relay, A1 and A2 of the safety relay are connected to the two ends of a power supply, the safety chains are connected to the main control input module, the safety chain state information is collected by the main control input module and fed back to the control module, and the coil of the disconnection safety connection relay is connected to the port of the main control output module, so that the effect of avoiding the interference and false triggering of the software safety chain is achieved.

The invention discloses a railway signal safety type relay electrical characteristic testing device, which comprises a testing device body, a guide frame, a screw rod and a placing plate, a connecting groove is formed in the top end of the testing device body, a plug matched with a railway signal safety type relay is fixedly mounted at the bottom end of the inner wall of the connecting groove, and the plug is electrically connected with the testing device body. A guide frame is fixedly mounted at the top end of the test equipment body, a placement groove is formed in the inner wall of the guide frame, traditional manual insertion and extraction operation is replaced through screw conveying, an electric push rod drives a placement plate to ascend and descend and other structures, and non-axial operation such as manual shaking and twisting caused by large friction force is fundamentally avoided. And in cooperation with accurate positioning of the hydraulic centering assembly, the relay socket and the plug can be stably butted and separated in the axial direction, the problems of socket pin bending, plug contact abrasion, shell cracking and the like are effectively reduced, and the service life of the relay and the service life of test equipment are remarkably prolonged.

The present invention relates to a programmable power supply and method for testing the electrical characteristics of a railway safety relay, which can output a programmable DC power supply with a programming resolution of 0-15V and 0-5A and can reach 5mV, and provides a low-cost, high-precision, programmable and stable measuring power supply for measuring the electrical characteristics of the current coil of the railway safety relay, and comprises a core processing unit, a power module, a display module, a control module, an output module, a current expansion module, an acquisition module, a communication module, etc. The DC programmable power supply receives an instruction from a host computer to output a voltage through the communication module, and the core processing unit calculates the voltage value to be output into internal control data, and drives the control module to output the control voltage, which is then converted into the voltage to be output by the output module, and the DC programmable power supply collects the output voltage and current values ​​in real time through the acquisition module, and compares them with the set values, so as to achieve a higher-precision output, and at the same time displays the output voltage and current values ​​in real time through the display unit.

The invention provides a rail transit safety relay simulation method and device and a teaching system, and belongs to the field of rail transit signal teaching training. The problems that the rail transit signal teaching training efficiency is low, after-class practical training is difficult, and teaching equipment is expensive are solved. The method comprises the following steps: reading a target relay type from the interior of a controller or receiving a target relay type through a simulator internal configuration switch or a communication unit; detecting the level state of N insert terminals connected with the relay socket in real time; according to an excitation judgment rule corresponding to the target relay type, whether the electrical connection state of the coil terminal meets an excitation condition is judged; dynamically configuring the input or output direction of the contact terminals based on the excitation judgment result; when the excitation condition is met, controlling the front contact terminal group to form a closed loop; and when the excitation condition is not met, the rear contact terminal group is controlled to form a closed loop. The method is mainly used in the safety relay simulation field.

The invention provides a novel AC annunciator controller and an annunciator control method, and the method comprises the steps: collecting the working current data of an annunciator in real time through a current collection module, and synchronously transmitting the working current data to an MCU1 and an MCU2; opening and closing state information of the safety relay is obtained through the relay node state acquisition module and is synchronously transmitted to the MCU1 and the MCU2; the working current data and the opening and closing state information of the safety relay are verified through the MCU1 and the MCU2 respectively, and when verification results are consistent, the working state of the signal machine is uploaded to interlocking equipment through an interlocking communication interface; according to a control command issued by interlocking equipment, a driving signal is generated and output to the series output control module; the series output control module comprises an execution circuit formed by connecting a first solid-state relay and a second solid-state relay in series; and when the MCU1 and the MCU2 simultaneously output conduction driving signals, the first solid-state relay and the second solid-state relay are synchronously conducted, and the signal machine is electrified to work. The working state of the annunciator can be correctly judged, and the annunciator is accurately and reliably controlled according to the command issued by the interlocking equipment.

The invention provides a hydrogen fuel cell hybrid power locomotive charging isolation device, and relates to the technical field of new energy automobile charging devices. The hydrogen fuel cell hybrid power locomotive charging isolation device comprises a power supply module, a control conversion module, a fault detection module, a transformer and a vehicle battery system, the power supply module outputs alternating current and provides electric power needed by charging to the control conversion module, the output end of the power supply module is connected with a locomotive charging interface through a charging wire, and the fault detection module is connected with the transformer. The output end of the locomotive charging port is connected with the input end of the control conversion module, and the control conversion module converts alternating current into direct current suitable for charging. The normal state and the redundant state of the system are monitored through the two safety relays respectively, when one relay detects a fault, the other relay can still keep operating, it is ensured that the power supply is not powered off, and therefore it is ensured that the system can continue to run safely when the fault occurs.

The utility model relates to a kind of low-pressure four-axis robot hardware circuit, comprising: core board, mainboard, drive board, safety relay, switching power supply and AC contactor;The core board is connected with the mainboard, the mainboard is connected with the drive board, and the mainboard is connected with safety relay by relay control line, and the safety relay is connected with the AC contactor by contact control line, and the AC contactor is connected with the drive board by switching power supply;The core board, mainboard and drive board constitute electronic circuit part, optimize the controller multi-core heterogeneous computing architecture, realize software and hardware collaborative processing, provide powerful computing power for controller;With modularization thought design relevant PCB, guarantee the multiplicity of PCB;Using safety relay and AC contactor designs double-loop structure, through hardware redundancy, real-time monitoring and high-level safety certification, complete fault tolerance to single point is realized, while giving consideration to quick response and maintainability.

The present invention discloses an electronic simulation device for a four-wire DC switch machine, which includes a forced guidance type safety relay, a first Hall current sensor, a second Hall current sensor, a first resistor, a second resistor, a diode, a positioning drive indicator light, a reverse position drive indicator light, a positioning indication indicator light, and a reverse position indication indicator light. The secondary coils of the first Hall current sensor and the second Hall current sensor control the operation of the forced guidance type safety relay through an indicator light control circuit and light up the positioning drive indicator light, the reverse position drive indicator light, the positioning indication indicator light, and the reverse position indication indicator light. The indicator light control circuit includes a first field effect transistor, a second field effect transistor, and a magnetic latching relay. The electronic simulation device for a four-wire DC switch machine of the present invention has a simple structure, a small volume, a light weight, is convenient to install, and is more in line with the characteristics of a real four-wire switch machine.

The invention discloses a starter circuit protection system, comprising a battery pack, an ignition switch, a first contactor, a starter motor and a circuit loop formed by a generator, characterized in that: the circuit loop is further added with a second contactor and a safety relay, the 86th pin of the safety relay is connected to the N end of the generator, the 87a pin of the safety relay is connected to the S pin of the second contactor, the 30th pin of the safety relay is connected to a fuse box, the B pin of the second contactor is connected to the B end of the starter motor, and the A pin of the second contactor is connected to the positive electrode of the battery pack; the invention adds the second contactor and the safety relay, so that the power main line of the starter and the starter circuit can avoid short circuit or adhesion after the engine is working, thereby preventing the starter from being damaged and the circuit from catching fire, and effectively ensuring the safe operation of the equipment.

The present invention discloses a communication control server based on packet domain communication, and its system and method. The communication control server comprises: a core logic processing communication unit, which includes a main processing unit for core logic processing and a communication unit for information exchange with the outside world; a network interaction unit connected to the communication unit, which is connected to the core logic processing communication unit. The network interaction unit is respectively connected to the dispatching centralized control system, the train control center, and the on-board equipment, and exchanges information with the on-board equipment based on a packet domain wireless network. The communication unit transmits a main check word to a safety supervision module. When the safety supervision module determines that the main check word is incorrect, a safety relay driver disconnects the external data transmission channel between the communication unit and the network interaction unit. Advantageously, the communication control server exchanges information with the outside world based on a packet domain wireless network, eliminating the need for an additional ISDN wireless communication server, thereby simplifying the overall structure and cost.

The invention relates to the technical field of wind power grid-connected control, and discloses a wind turbine generator reactive power dynamic collaborative distribution method for whole-field loss reduction and voltage stabilization. The invention aims to solve the technical problem that the existing reactive power distribution strategy is difficult to consider the transient stability of the grid-connected point voltage and the internal operation economy of the station in a complex current collection system. The method comprises the following steps: analyzing a unit reactive power reserve space by collecting whole-field synchronization parameters; screening an initial distribution value with the minimum total loss based on the full-path impedance and the voltage sensitivity; a compensation amount is calculated through response time delay to generate a cooperation instruction, and full-field action synchronization is achieved; and on-line parameter correction and safety relay distribution are executed in combination with voltage slope monitoring. According to the invention, the grid-connected voltage control precision is improved, the electric energy loss of the system is reduced, and the safe operation of converter equipment is ensured.

This application discloses a method and system for preventing dragging of rail transit vehicle doors based on contact-type sensitive edge resistance detection. The method includes: acquiring train zero-speed signals, door closing and locking status signals, and isolation status signals; and using a controller to determine whether to activate sensitive edge detection based on the combined logic of the acquired signals. When sensitive edge detection is activated, the controller detects the resistance change of the sensitive edge, and converts the detected sensitive edge resistance signal into a voltage signal via a resistance sampling circuit inside the controller. The voltage value corresponding to the converted voltage signal is used as a decision variable. If the decision variable corresponding to the sensitive edge meets a first preset condition, it is determined that the sensitive edge has been triggered and an object is being clamped. The controller then controls the disconnection of the safety relay contacts to cut off the train traction circuit, and simultaneously triggers an alarm device to issue an audible and visual warning signal. This application can reliably identify and lock soft, thin objects clamped by the vehicle, eliminating the risk of dragging.

The present invention provides a braking logic transformation circuit suitable for a wind turbine generator set. The system includes: after the hardware safety relay contacts 11 and 14 are connected in series with the software safety relay contacts 11 and 14, they jointly control the on and off of the high-speed brake solenoid valve of the unit with the newly added parallel branch 1; the yaw brake relay contacts 11 and 14 and the newly added parallel branch 2 jointly control the on and off of the yaw brake solenoid valve; the left yaw relay contacts 11 and 14 and the newly added parallel branch 3 are connected in parallel to jointly control the power on and off of the left yaw relay coil. The braking logic transformation circuit suitable for a wind turbine generator set provided by the present invention gives priority to air braking, crosswind yaw backup, and mechanical brake assistance when the unit is shut down, which to a certain extent avoids the friction fire of the brake system caused by excessive input of the brake system, and maximizes the reduction of the speed of the unit when it is in an overspeed state.

The application discloses a wind turbine high-speed shaft brake control system and method, which comprises a high-speed shaft brake power supply control loop, a high-speed shaft brake temperature detection control loop, a main control PLC, a safety relay and a rotating speed monitor, wherein the main control remote brake release switch K1 and the main control brake holding switch K4 of the high-speed shaft brake power supply control loop are connected with the main control PLC respectively, the safety relay switch K3 of the high-speed shaft brake power supply control loop is connected with the safety relay, the rotating speed control switch K2 of the high-speed shaft brake power supply control loop is connected with the rotating speed monitor, and the high-speed shaft brake temperature sensor R1 and the cabin temperature sensor R2 of the high-speed shaft brake temperature detection control loop are connected with the temperature acquisition module of the main control PLC respectively. The application can effectively solve the problems of high-speed shaft brake wear, loss of power generation of the unit and even cabin fire caused by the failure of the high-speed shaft brake control loop.

The utility model provides an aging test tool for a safety relay module, which relates to the technical field of relay testing and comprises a shell, a fixed shell is fixedly mounted on the inner wall of the shell, a plurality of sliding holes are formed in the top of the fixed shell, sliding plates are slidably connected to the inner walls of the sliding holes, a telescopic rod is fixedly connected to one side of each sliding plate, and the telescopic rod is fixedly connected to the other side of each sliding plate. One end of the telescopic rod is fixedly connected with a sliding plate, the other end of the telescopic rod is fixedly connected with the inner wall of the fixing shell, the top of the sliding plate is fixedly connected with a fixing frame, one side of the fixing frame is fixedly connected with a baffle, and a testing mechanism is fixedly installed on the inner wall of the shell. The safety relay can be fixed through the fixing frame and the baffle, the moving track of the fixing frame can be limited through the sliding plate and the sliding hole, then the fixing frame is more stable in the moving process, the template can be fixed through the clamping hole and the fixing block, and then the position of the fixing frame is fixed.

This utility model relates to the field of relay technology, and provides an anti-arc safety relay for charging piles, including a relay housing and a coil installed at the center of the bottom of the housing; an iron core, which is slidably inserted into a through hole running vertically through the center of the coil; a transmission column, which is installed at the top of the iron core; a moving contact assembly, which is installed at the top of the transmission column; and two arc-extinguishing components, which are symmetrically installed on the left and right side walls near the top of the relay housing. This anti-arc safety relay for charging piles, through the scientific layout of multi-layer arc-extinguishing grids, a fast-rebound disconnection mechanism, and a buffer reset design, can effectively suppress and quickly eliminate the arc generated between the moving and stationary contacts, significantly improving the safety performance and service life of the relay.