11 results about "Safety relay" patented technology

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 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 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.

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.

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.

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.

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.

This utility model discloses an engineering touch screen control cabinet and a vehicle manufacturing production line, relating to the technical field of engineering touch screen control cabinets. It includes a cabinet body, a cabinet door, a control PLC, and a safety PLC. The cabinet body forms a receiving cavity, and the cabinet door is rotatably mounted on the cabinet body, used to cover or open the receiving cavity. Both the safety PLC and the control PLC are mounted on the cabinet body and placed within the receiving cavity. The control PLC is used to connect to the actuator and is signal-connected to the safety PLC. The safety PLC includes a safety switch control component, a safety PLC input module, and a safety PLC output module. The safety PLC input module and the safety PLC output module are respectively signal-connected to the safety switch control component. By replacing the function of safety relays with a safety PLC, and having multiple safety PLC input modules and multiple safety PLC output modules, one safety PLC can replace multiple independent safety relays, thereby reducing the space occupied inside the control cabinet.

The application belongs to the field of automatic production line control, and particularly relates to a robot grabbing anti-collision control method and system for use in an automatic production line, the method comprising: in response to a trigger signal for the robot entering a grabbing track, continuously collecting multiple frames of two-dimensional code images during movement of a robot gripper towards a workpiece, and obtaining first workpiece model data through analysis and analysis; at the moment when the gripper contacts the grabbing workpiece, triggering collection again and obtaining second workpiece model data through analysis; comparing the workpiece model data obtained through analysis with preset target model data respectively; if the double comparisons are consistent, allowing the robot to lift and transfer the workpiece; if any comparison is inconsistent, immediately executing an emergency stop program: interrupting the grabbing program through a software instruction and triggering an audible and light alarm, while outputting a physical isolation signal to cut off a safety relay coil connected in series in a grabbing power loop, so that the robot maintains a current safe posture and prevents a collision accident from occurring.

The utility model discloses an intelligent ignition control cabinet safety interlocking protection device relates to ignition control safety technical field, including the explosion -proof cabinet body and signal acquisition subassembly, the inside of explosion -proof cabinet body is provided with interlock control unit, and interlock control unit includes PLC controller, safety relay and standby power module, the PLC controller electricity is connected with safety relay and standby power module, signal acquisition subassembly installs in the outside of explosion -proof cabinet body. This intelligent ignition control cabinet safety interlocking protection device, with PLC controller as the core, linkage safety relay and executing mechanism, constructs " monitoring - judge - execution " system interlocking logic, avoids traditional no unified central protection disorder problem, and electromagnetic gas cut -off valve responds quickly, and the sound -light alarm gives timely early warning, and the standby power module guarantees power -off protection not to interrupt, all -round improvement ignition system security and reliability, adapts to industrial combustion scene efficient operation demand.