3results about How to "Avoid unstable factors" patented technology

The utility model discloses a switch direct-current power supply with a filtering anti-burning circuit, which mainly solves the problem that the existing switch power supply is easy to short-circuit and cannot be used normally. The switch direct-current power supply comprises a full-bridge rectifier D connected in series with the input end of an alternating-current power supply, a power-on protection circuit connected with the input end of the alternating-current power supply, a surge protection circuit connected with the full-bridge rectifier D, a filtering anti-burning circuit connected with the surge protection circuit, and a short-circuit protection circuit connected with the filtering anti-burning circuit, and the direct-current output end is connected with the short-circuit protection circuit. Through the above design, the switch DC power supply effectively solves various unstable factors, such as voltage fluctuation, short circuit and surge, possibly encountered by a traditional DC power supply in a complex line and a severe environment through the accurately designed circuit assembly, thereby substantially improving the operation stability and safety of electronic equipment.

The utility model discloses a rapid steel wire rope winding and unwinding device which comprises a base plate (1), a rotating disc (2), a guiding device (3) and a rope winding and unwinding cage (4). The turntable (2) is located at the upper part of the chassis (1) and is rotationally connected with the chassis (1), the guide device (3) comprises a guide pulley (3-1) for guiding a steel wire rope, the rope winding and unwinding cage (4) is fixed on the turntable (2) and is formed by connecting a plurality of pipes, a rope winding space is formed in the rope winding and unwinding cage (4), and an opening is formed in the top of the rope winding and unwinding cage (4). And the steel wire rope can be wound outside the rope winding and unwinding cage (4), and when the rope is wound, the steel wire rope can be stored in the rope winding space through the opening. The steel wire rope replacing device is convenient to operate, saves manpower, effectively reduces the labor amount of personnel, shortens the replacing time, improves the replacing efficiency and reliability, and effectively prolongs the service life of the steel wire rope.

This utility model belongs to the technical field of metallurgical casting production equipment, and relates to a vacuum casting trolley system, including a casting ladle, a trolley body, a locking device, a movable support frame, and a lifting device. Its operation is interference-free; upon reaching the casting position, it automatically locks, and a hydraulic cylinder drives the pouring port of the sliding gate at the bottom of the ladle to descend into the receiving port of the tundish for casting. After casting, the hydraulic cylinder lifts the ladle back to its original position, and the trolley returns to its initial position. This utility model has a simple and reliable structure, effectively solving the problems of frequent malfunctions, high risk of molten steel leakage, poor casting stability, high operational difficulty, and a dirty environment associated with traditional crane-lifted ladle casting equipment. It significantly improves production efficiency, casting quality, and safety, reduces labor and equipment costs, and improves the production environment and worker occupational health conditions. It has broad application prospects and significant practical value in the iron and steel metallurgy field.