57results about How to "With warning function" patented technology

The invention provides a portable air cleaner, aims to solve the problem that the conventional respirators are single in function and unpractical, and relates to the technical field of air purification. The portable air cleaner comprises a cleaning main frame and a respiration nasal mask, wherein the cleaning main frame and the respiration nasal mask are connected through a flexible duct; the interior of the cleaning main frame is divided into a pressure-boost filter cavity, a primary air storage cavity and a secondary air storage cavity; a filter and a booster pump are arranged in the pressure-boost filter cavity; a negative ion generator is arranged in the primary air storage cavity; and a refrigeration and heating device, a pressure sensor and a temperature sensor are arranged in the secondary air storage cavity. The portable air cleaner has the advantages of simple structure, small size and portability; a jet pump is arranged in the cleaner to achieve positive-pressure air supply, the air supply volume is large, and the air cleaner can meet the use requirement of a user in exercise; the negative ion generator and the refrigeration and heating device arranged in the air cleaner can further improve the air quality; and further, a display screen can display the key parameters such as the flow rate, the air pressure, the temperature, the residual electric quantity and the like, and has a warning function, so that the user can operate accurately and use the air cleaner safely.

The present invention discloses a fence applicable to roads and bridges. The fence applicable to roads and bridges comprises pillars, props, steel wire ropes and a baffle. Each prop is installed on one side of the corresponding pillar, the pillars and the props are fixedly connected, each prop is arranged at a certain angle, the steel wire ropes are installed on the inner side of the pillars, rubber sleeves are arranged on the both sides of the steel wire ropes, the baffle is fixed to the steel wire ropes, reflective strips which are equidistantly distributed are arranged on the baffle, illumination lamps are installed on the pillars, cross bars are installed at the bottoms of the pillars, the cross bars are fixedly connected with the pillars, steel splinters are arranged at the upper and lower ends of the cross bars, and the steel splinters are welded to the cross bars. The fence applicable to roads and bridges is high in structural strength and good in protective effect, and has an illumination warning function.

The invention discloses a dynamic weighing mechanism for a lifting device based on a comparison method. The dynamic weighing mechanism is effective in dynamic compensation, small in zero drift and high in precision and accuracy. The dynamic weighing mechanism comprises a lifting ring (1), a lifting hook (5) and a shell (9), and is characterized in that an upper bearing plate (2), a cargo weighing sensor (4) and a lower bearing plate (3) are sequentially arranged between the lifting ring (1) and the lifting hook (5); a standard mass block (7) is connected to the lower end face of the upper bearing plate (2) through a standard mass block weighing sensor (6); the dynamic weighing mechanism also at least comprises an accelerometer (8) used for monitoring the weighing environment. The dynamic weighing mechanism is characterized in that center axes of the lifting ring (1), the upper bearing plate (2), the lower bearing plate (3), the cargo weighing sensor (4), the lifting hook (5), the standard mass block weighing sensor (6), the standard mass block (7) and the accelerometer for monitoring the weighing environment coincide with one another in the vertical direction; the shell (9) is coated between the upper bearing plate (2) and the lower bearing plate (3).