58 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 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.

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 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 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 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 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.

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.

This invention discloses a method for testing functional safety relays, belonging to the field of safety relay technology. The method includes the following steps: determining the pulse frequency for safety relay testing and setting its value; connecting the CPU's pulse input and pulse capture pins to the safety relay; filtering the pulse signal; detecting the closed state of the safety relay upon startup; detecting the open state of the safety relay upon startup; performing a re-check of the safety relay status during system operation; and comparing the re-checked safety relay status with the set safety relay status. This invention provides a method for testing functional safety relays that utilizes the characteristics of safety relays to test relay contacts, using idle contacts of the same safety relay to verify the used contacts, indirectly verifying the relay's operating status. It enables effective and comprehensive testing of safety relays during system operation, improving system safety.

The utility model discloses a motor protection circuit and a motor protection system. The motor protection circuit comprises a first switch circuit, a servo driver, an outer side forward limit switch, an outer side reverse limit switch, an emergency stop button and a safety relay. A first power supply end of the servo driver is connected with an external power supply through a first switching circuit, and an output end of the servo driver is connected with the motor; the outer side forward limit switch, the outer side reverse limit switch and the scram button are connected in series between the first input end and the second input end of the safety relay; the output end of the safety relay is connected with the first switching circuit; through linkage of the outer side forward limit switch, the outer side reverse limit switch and the scram button, when any one of the outer side forward limit switch, the outer side reverse limit switch and the scram button breaks down, other normal elements can be normally triggered, so that the servo driver drives the motor to stop moving in time, and the safety of the motor in the running process is improved.

The utility model discloses a safety control circuit and a safety control system. The safety control circuit is connected with semi-automatic equipment and / or automatic equipment, the safety control circuit comprises a door switch, a start key, a reset key, a locking relay, a safety relay, a buzzer and three-color lamps, and the three-color lamps comprise a red lamp, a yellow lamp and a green lamp; the safety relay is used for cutting off an equipment power source, the locking relay is used for locking the equipment power source, and the red lamp is used for door opening and closing action and lighting when receiving an external fault signal; the start key is used for starting the semi-automatic equipment and / or the automatic equipment, the green light is used for emitting light when the semi-automatic equipment and / or the automatic equipment normally works, and the yellow light is used for emitting light when the semi-automatic equipment and / or the automatic equipment is to be started. According to the utility model, a pure analog circuit is used and no IC is used to realize safety control of equipment, so that failure and damage of the safety control circuit caused by static electricity and other adverse factors are avoided, and damage of an equipment power source to people is avoided.

The application discloses a high-safety relay protection method and device, and relates to the technical field of relay protection, in particular to a high-safety relay protection method and device. The method comprises the following steps: for two groups of independently collected analog signals, first and second initial starting data are obtained by adopting first and second data processing methods respectively, and the two groups of initial starting data are mutually checked; for another two groups of independently collected analog signals, third and fourth initial starting data are obtained by adopting the first and second data processing methods respectively, and the two groups of initial starting data are mutually checked; when the first initial starting data meets a starting condition, the third initial starting data meets the starting condition, and the second initial starting data or the fourth initial starting data meets an action condition, a relay coil is actuated. The application prevents protection misoperation caused by chip operation errors and the possibility of protection refusal caused by common cause faults by means of a redundant processor, and improves the reliability and availability of the protection device as a whole.

This invention belongs to the field of laser cutting, specifically relating to a laser cutting machine cyclic processing control system and method. It includes a safety relay, an emergency stop input module and a ready input module connected to the safety relay, and related relays. The emergency stop input module controls the conduction of the dual safety circuit of the safety relay, and the ready input module controls the conduction of the reset circuit of the safety relay. Based on the working principle of the safety relay's dual safety circuit conduction followed by reset, a hard enable signal is sent to the processing console. The processing console responds to the hard enable signal to perform worktable exchange or cyclic processing. During processing, the operator performs loading / unloading operations and safety relay control operations from behind the equipment, eliminating the need to go to the front of the equipment. This achieves safe operation and cyclic processing, reducing operator complexity and improving work efficiency while ensuring safe loading / unloading.

The application discloses a control device, an elevator and a control method. The control device is used for the elevator, the elevator comprises a brake power supply and a brake, the brake power supply is electrically connected with the brake and is used for supplying power to the brake, the control device comprises a first control module, the first control module comprises a first controller, a first power relay and a second power relay, the first power relay and the second power relay are connected in series on a circuit of the brake power supply and the brake, the first controller is electrically connected with the first power relay and the second power relay respectively, and the first controller is configured to control the brake power supply to supply power to the brake according to on-off states of the first power relay and the second power relay. Since the power relay can bear larger current and voltage, the high-power circuit can be controlled by arranging the power relay between the brake power supply and the brake, the use range is improved, and the power relay is cheaper than the safety relay, so that the cost can be saved.

The utility model discloses an electric uncovering protection circuit and an electric uncovering system, and relates to the technical field of power electronics. In the electric cover opening protection circuit, an internal contact of a vacuum gauge and a normally open contact of a switch module are arranged in an input loop of a safety relay and are used for jointly controlling the on state of the input loop of the safety relay; the vacuum gauge is used for detecting the cavity air pressure in the equipment to be uncovered and closing or opening an internal contact of the vacuum gauge according to the cavity air pressure; the switch module is used for closing a normally open contact of the switch module in response to a cover opening control instruction of external personnel; and the safety relay is used for closing or opening the output contact of the safety relay according to the on state of the input loop so as to adjust the power supply state of the external power supply to the electric cover opening controller. According to the embodiment of the invention, the safety risk generated in the use process of the electric uncovering device can be avoided, so that the reliability and safety of uncovering work of the electric uncovering device are guaranteed.

The invention relates to an emergency stop safety control system for a natural gas compressor. The emergency stop safety control system comprises a signal acquisition unit, a data processing unit, an emergency stop output unit and a safety reset unit, the output end of the signal acquisition unit is in electric signal coupling with the input end of the data processing unit; the input end of the sudden stop output unit is respectively coupled with the output end of the signal acquisition unit and the output end of the data processing unit through electric signals; the input end of the safety reset unit is respectively coupled with the output end of the data processing unit and the output end of the signal acquisition unit through electric signals; the signal acquisition unit is used for acquiring an emergency stop signal, a reset signal and a safety relay signal; and the data processing unit is used for carrying out logic judgment on sudden stop and safety relay signals. The invention further relates to a control method using the sudden stop safety control system for the natural gas compressor. The reliability of the emergency stop control system is improved; the misoperation of sudden stop removal is effectively avoided, and the safety risks of field personnel and compressor equipment are reduced.

The utility model relates to the technical field of relays, and discloses a safety relay with a damping function, which comprises a relay body forming a core frame, and a damping base is arranged at the bottom of the relay body. A transmission seat is mounted in the middle of the bottom of the inner side wall of the relay body, a mounting groove is formed in the inner side wall of the damping base, and a mounting plate is mounted at the bottom of the inner side wall of the mounting groove. A damper is mounted in the middle of the top of the mounting plate, a connecting piece is connected to the middle of the top of the damper, an H-shaped connecting plate is mounted at the top of the connecting piece, and stress plates are rotationally connected to the two sides of the inner side wall of the H-shaped connecting plate. According to the utility model, the damping base, the damper, the first driven spring, the second driven spring and other parts in the damping base cooperate with each other, so that various vibrations borne by the relay in the working process can be effectively absorbed and buffered.

The invention relates to a rail transit vehicle brake output state fault self-recovery excitation system and method. The system comprises a sensor module, an AD acquisition module, a safety relay and a microcontroller. Wherein the safety relay comprises two groups of contacts which are connected with each other and is used for outputting the braking state of the vehicle; the microcontroller obtains the pressure value of the brake cylinder by reading the AD acquisition module and controls the contacts of the safety relay to be opened or closed, one set of contacts are used for outputting external states, the states of the other set of contacts are used for real-time detection, and when it is diagnosed that the contacts have adhesion faults, the safety relay is continuously excited. According to the self-recovery mechanism provided by the invention, the fault-tolerant capability of the system is greatly improved, the risk of failure of the vehicle braking system caused by relay faults is reduced, and the stability and reliability of the vehicle braking system are enhanced.

The utility model discloses a kind of cooperative anti-collision intelligent mechanical arm systems for underground drilling machine, comprising: intelligent mechanical arm and the PLC controller and safety relay of being set in control box, the PLC controller is electrically connected with mechanical arm driver and tactile sensor respectively, the mechanical arm driver is electrically connected with the intelligent mechanical arm, the tactile sensor is used to perceive the collision pressure from outside, the mechanical arm driver is used to drive intelligent mechanical arm to act on drill pipe, the safety relay is used to terminate intelligent mechanical arm action.The utility model perceives the collision pressure from outside in real time by tactile sensor, in combination with the quick response mechanism of safety relay, can terminate mechanical arm action in millisecond level time, effectively avoid equipment damage and personnel injury.

A safety control system and method for a battery production line are provided. The battery production line includes at least one independent safety area, and the safety control system includes at least a safety control unit (201), production equipment and a safety relay (202) corresponding to the production equipment within the safety area, the production equipment including at least a robot (203), wherein the safety control unit (201) is for generating a safety control signal in response to a safety trigger event, the safety relay (202) is connected to the safety control unit (201) and is for transmitting a shutdown control signal to the robot (203) controller in response to the safety control signal, and the robot (203) controller is connected to the safety relay (202) and is for controlling the robot (203) to enter a safe state in response to the shutdown control signal.

The application discloses a safety control system applied to wafer processing equipment, which comprises a safety door switch, a control module, a safety relay and a servo driver, the safety door switch is connected with the control module, the control module is connected with the safety relay, the safety relay is connected with the servo driver, the safety door switch outputs double-path switch signals and locking signals to the control module, the control module outputs a locking and unlocking command to the safety door switch, the control module outputs an STO signal to the safety relay according to the double-path switch signals and the locking signals, the safety relay outputs an action signal to the servo driver, and the servo driver outputs an STO feedback signal to the control module based on the working state.

The invention discloses a relay driving board card and a detection method thereof. The relay driving board card comprises an isolation module, a plurality of driving loops and a processor module, each driving loop comprises a power supply switching module, an electronic switch module, a current monitoring module and a voltage monitoring module; the input end and the output end of the power supply switching module are respectively connected with the output end of the isolation module and the input end of the electronic switch module; the processor module is respectively connected with the isolation module and the plurality of driving loops and is used for controlling and monitoring the isolation module and the plurality of driving loops, the electronic switch module is adopted to replace a safety relay in the traditional technology, and the hardware cost is reduced; the state of an electronic switch module in the relay drive board card can be monitored, and external short circuit and mixed line can be identified; and the power supply switching module is used for monitoring the state of the driving loop in real time when the driving loop is not driven, so that loop faults can be found in time.

The embodiment of the utility model provides a one-key self-rescue system of a villa elevator. The one-key self-rescue system comprises a one-key rescue button, a relay short circuit board, a control cabinet interface board and a control cabinet main board. The relay short-circuit board is provided with a relay K1, a relay K2 and a plurality of short-circuit lines which are connected in parallel; the control cabinet interface board is provided with a door lock loop interface, a safety loop interface, a control cabinet scram interface, a one-key rescue signal output interface, a safety relay signal feedback interface, a first power interface, a second power interface and a KM5 normally open contact; the control cabinet main board is in communication connection with the control cabinet interface board; normally open contacts and normally closed contacts of the relay K1 and the relay K2 are triggered and controlled by a normally open contact KM5, and the normally open contact KM5 is triggered and controlled by a one-key rescue button; the one-key rescue button is arranged in the elevator car, when the elevator suddenly breaks down in a safety circuit or a door lock breaks down, trapped passengers can be automatically rescued by pressing the one-key rescue button, the trapped passengers can be rescued in a short time, and the personal safety of the passengers is better guaranteed.

The application discloses a safety control system applied to wafer processing equipment, which comprises a safety door switch, a control module, a safety relay and a servo driver, the safety door switch is connected with the control module, the control module is connected with the safety relay, the safety relay is connected with the servo driver, the safety door switch outputs double-path switch signals and locking signals to the control module, the control module outputs a locking and unlocking command to the safety door switch, the control module outputs an STO signal to the safety relay according to the double-path switch signals and the locking signals, the safety relay outputs an action signal to the servo driver, and the servo driver outputs an STO feedback signal to the control module based on the working state.

The invention relates to a rail traffic signal machine wiring and fault analysis practical training device for teaching, which comprises a signal operation display panel part, an in-box control component part, a relay combination part and a direct-current stabilized power supply, the signal operation display panel part is provided with a five-lamp-position arrival signal machine model, an indoor indication lamp part and an open signal command issuing knob, and is used for simulating train signal display and operation; the control component part in the box comprises a power supply air switch, a driving relay group, an acquisition relay group and a wiring terminal strip, and is used for realizing signal driving and state acquisition; the relay combination part consists of a plurality of safety relays for railway signals, is connected through a plug terminal and is used for wiring welding and function verification; the direct-current stabilized power supply outputs 24V safety voltage, and training safety is guaranteed. Wiring, conduction verification and fault setting and troubleshooting are completed in a low-voltage environment, and the device has the advantages of being high in modularization degree, rapid in reset and suitable for rail transit signal teaching and skill assessment.

The utility model belongs to safe relay detection equipment technical field, and disclose frame type safe relay detection equipment portable protection structure, including the protection corner spare of four corner places of safe relay detector, through adjusting telescopic link connection between adjacent protection corner spare, first corner spare and second corner spare all adopt the double -deck structure design of outer layer rubber pad, inner layer rubber pad, form " first buffering after shock attenuation " double protection mechanism, the hardness of outer layer rubber pad is slightly higher, has stronger wear resistance and tear resistance, can effectively disperse impact force in equipment collision instant, the hardness of inner layer rubber pad is lower, the elasticity is extremely good, can convert the impact force of outer layer transmission into self deformation energy, absorb high -frequency vibration, protect equipment internal precision component, through setting adjusting telescopic link and interval adjusting assembly, can be fixed on the equipment of different length width height, to expand the scope of use, and also can reduce the volume and mutual split when not using, to facilitate storage.