7results about How to "Ensure safe work" patented technology

The application discloses a linear voltage stabilizing circuit based on NMOS regulating tube, comprising a bias voltage generating circuit, a voltage division feedback circuit, an oscillator circuit, a charge pump circuit and a pre-voltage stabilizing circuit, wherein the bias voltage is generated through the bias voltage generating circuit; the output voltage is divided to obtain a feedback voltage through the voltage division feedback circuit; the feedback voltage is amplified and then input to the oscillator circuit to generate an oscillation signal; the generated oscillation signal is input to the charge pump circuit; the gate voltage of the NMOS regulating tube is adjusted through the charge pump circuit, so as to obtain the output voltage; the pre-voltage stabilizing circuit widens the input voltage range, so that the linear voltage stabilizing circuit can work in a high input voltage environment; the linear voltage stabilizing circuit based on the NMOS regulating tube has the characteristics of wide input range and low voltage difference, fast transient response speed, and is fully compatible with the thin gate oxide process.

The invention relates to the technical field of nuts, and discloses automatic feeding and rivet nut in-mold riveting equipment which comprises a workbench, a supporting frame is fixedly connected to the back of the workbench, two vibration discs are installed at the top of the supporting frame, and a driving assembly is installed at the top of the supporting frame. According to the automatic feeding device, the vibration disc is arranged, the vibration disc is started, the vibration disc automatically conveys nuts into the feeding rail through vibration, the nuts are moved into the guide groove, automatic feeding is achieved, the adjusting air cylinder is arranged, after the nuts are moved into the guide groove, the adjusting air cylinder is started, the adjusting air cylinder drives the moving plate to move towards the back, and therefore the nuts can be automatically fed. When the nut is conveyed, the clamping groove is communicated with the guide groove, the vibration disc continues to convey the nut at the moment, the nut enters the guide groove, the adjusting air cylinder is reset, the clamping groove and the guide groove are staggered, meanwhile, the clamping groove is communicated with the discharging opening, the nut falls on the containing plate and is limited and controlled by the limiting rod, and transferring of the nut is achieved.

The utility model relates to the technical field of helicopter rotors, in particular to a damping structure for a helicopter, which comprises a connecting shaft, a damping bearing and a swing identification structure, the damping bearing is used for reducing vibration in the operation process of the helicopter, and the swing identification structure is used for identifying the centrifugal force of blades on the connecting shaft. The damping bearing comprises a shell, damping blades, a damping body and an inner shaft sleeve, the inner shaft sleeve is used for containing a rotating shaft of the blades, the rotating shaft is rotationally connected with the inner shaft sleeve, and the damping blades are concentrically and evenly distributed along the axis of the inner shaft sleeve. The problem that an existing shimmy damping structure for the helicopter is complex and not easy to maintain or replace is effectively solved. The damping bearing composed of the shell, the damping blade, the damping body, the inner shaft sleeve and the limiting ring is adopted, deflection generated by the blade can be swung under the action of the damping body and the damping blade, and vibration generated by the blade can be absorbed by the damping body in the swinging process.

The utility model relates to the technical field of lift, and disclose a lift maintenance accurate position locking device, including base, first scissor arm, second scissor arm, movable frame, lead screw and motor, the movable frame slidingly arranged in the upper surface of base, the motor fixedly connected in the upper surface of base, the lead screw fixedly connected in the output shaft end portion of motor and is screwed in the inner wall of movable frame, the top of base is equipped with the lifting platform, the fixed end of first scissor arm and second scissor arm located top is fixedly connected with the rotating lever simultaneously. The utility model provides the starting hydraulic cylinder, the piston rod of hydraulic cylinder stretches out, pushes the connecting plate movement through the push -pull rod and drives the sliding block to slide in the sliding slot on the lifting platform, the sliding block is driven the locking clamp block to move to the arc limit frame through the drive rod, finally locking clamp block is pressed on the side wall of arc limit frame, locking the lifting platform in the current position, ensure that the maintenance work is carried out safely, guarantee stability.

The application discloses a kind of adjustable oil tank overflow interface components and oil tank expansion space size adjusting method, belong to aero-engine lubrication (oil) system design technical field. Overflow interface components are mainly composed of overflow joint, overflow elbow, sealing ring, bushing, bolt, locking type has broken slot steel wire screw, mounting seat etc..The application can control the size of expansion space in oil tank according to the actual demand of oil tank, control the overflow of liquid in oil tank by rotating overflow elbow, prevent oil leakage caused by excessive oiling, maintain system pressure balance, and automatically discharge in abnormal conditions.The application is applied to aero-engine oil system oil tank, with small volume, light weight, high integration and good maintenance, etc., can realize the role of oil tank adjusting expansion space.

The invention relates to the technical field of hydrogen and oxygen production through water electrolysis, in particular to a device for producing hydrogen and oxygen through alkaline water electrolysis. Comprising an electrolytic cell, an oxygen gas-liquid separator and a hydrogen gas-liquid separator, a gas outlet of the oxygen gas-liquid separator is connected with the oxygen storage device; a gas outlet of the hydrogen gas-liquid separator is connected with the hydrogen storage device; a flash tank is arranged between liquid outlets of the oxygen gas-liquid separator and the hydrogen gas-liquid separator, a pressure release valve is arranged at the top of the flash tank, and a dissolved oxyhydrogen gas sensor and a PLC (Programmable Logic Controller) connected with the dissolved oxyhydrogen gas sensor and the pressure release valve are arranged at the bottom of the flash tank; the PLC judges whether dissolved oxyhydrogen gas in the flash tank reaches a threshold value or not according to data collected by the dissolved oxyhydrogen gas sensor, and controls the pressure release valve to be opened; a buffer tank is arranged at a liquid outlet of the flash tank and is communicated with a liquid inlet of the electrolytic bath. The concentration of dissolved hydrogen and dissolved oxygen in the alkaline solution can be kept below a safety threshold value, and safe work of the system can be maintained.

The invention relates to the field of blend oil production, in particular to a blend oil production process DCS (Distributed Control System) decentralized control system, which comprises a blend oil production process module used for executing production and processing of blend oil; the DCS control system module is used for performing decentralized control on each blend oil production process module; the DCS control system module comprises a central control module and a plurality of sub-control modules, the sub-control modules are used for independently controlling all the blend oil production process modules, and the central control module directly completes configuration with all the sub-control modules based on stored structured HAZOP deviation analysis records and LOPA grading results. The DCS control system adopts a distributed structure, a plurality of system components are distributed on an open redundant communication network, and the system components are provided with independent function processors, have maintenance and self-diagnosis functions, and can perform early warning to ensure the safe work of the blend oil production process.