32results about How to "Avoid or reduce harm" patented technology

The invention relates to a vibration-reducing and damping structural part of a portable electronic device and a notebook computer. The vibration-damping structural part of the portable electronic device includes: a damping cavity, which is opened on the casing of the portable electronic device; a cover plate, which covers the damping cavity; and a vibration-damping component, which is placed in the above-mentioned damping cavity. The above-mentioned damping cavity can be independent, or divided into several sub-damping cavities by partitions. The vibration-damping components mentioned above can be particles, thin rods, flat plates and the like. The vibration-damping structural components of the portable electronic equipment of the present invention, when periodic or non-periodic vibrations are caused by external forces such as vibration, drop, impact, etc., especially random vibrations, the vibration-damping components enclosed in the cavity move and collide with each other It consumes a lot of energy, absorbs and consumes a lot of vibration energy, and reduces the harm caused by vibration. The damping structure is compact, light and thin, and the damping does not change with temperature in the range of -40-80°C, which is its excellent characteristic.

The invention relates to a structure of gas vibration isolation, buffering and anti-dropping damping and a laptop. The gas vibration isolation, buffering and anti-dropping structure comprises a substrate, a cover board which covers the substrate to form a gap with the substrate and is provided with a channel for the gas to flow in or out of the gap. The difficulty and resistance of gas flowing should be considered during the designing process. The cover board is connected with the substrate by a plurality of screws and a gap is formed between the cover board and the substrate. An air membraneis formed between the cover board and the substrate of the structure. The air membrance is oppressed high -speedily by the vibrating cover board and the substrate in case of mechanical vibration, dropping and impacting, and the air becomes viscous and swirly when passing the channel (gap). Due to the viscosity of the air, the energy consumption includes two parts of viscosity and eddy current loss which increase the damping of the system that rapidly attenuates the vibration or reduces the resonance amplitude, thus avoiding or reducing the harm caused by the external load.

The invention provides a metal double-wall dismountable thermal insulation cover and a manufacturing method. The metal double-wall dismountable thermal insulation cover mainly comprises a metal outer shell and an inner thermal insulation layer, wherein the metal outer shell is a block-shaped box body formed by four side wall boards, an outer wall board and an inner wall board, fireproof bricks are arranged inside the block-shaped box body in an overlaying mode, fill the inner cavity of the block-shaped box body and form at least two parallel layers between the outer wall board and the inner wall board which are opposite, the outer wall board and the inner wall board correspondingly form an arc-shaped board, and an inner supporting frame is arranged inside the block-shaped box body and connect the four side wall boards, the outer wall board and the inner wall board. The manufacturing method comprises the following steps of selecting materials, cutting components, blanking, presetting the fireproof bricks, fixedly arranging the inner supporting frame through spot welding, respectively and fixedly arranging the four side wall boards and the outer wall board on the inner supporting frame through group spot welding, fill the inner supporting frame with the fireproof bricks and fixing, and group-riveting the inner wall board and the supporting frame to form the block-shaped box body.

The invention discloses an independent smoke exhaust method for a tunnel, which includes: (1) setting a smoke exhaust air duct with an independent structure outside the main tunnel section, and setting exhaust air ducts at intervals along the longitudinal axis of the tunnel above the main air duct section of the tunnel; The smoke outlet and the smoke exhaust outlet are connected with the smoke exhaust duct by the smoke exhaust cross duct, the smoke exhaust damper is arranged on the smoke exhaust cross duct, and the smoke exhaust fan is installed in the smoke exhaust connecting air duct; (3) When a fire occurs in the tunnel and smoke needs to be exhausted, open the smoke exhaust damper near the smoke source, and the smoke will pass through the smoke exhaust duct, The smoke exhaust connection duct is discharged from the tunnel to the outside of the cave. The invention also discloses a tunnel smoke exhaust system implementing the above method, and the smoke exhaust system is provided with an independent smoke exhaust device. The invention simplifies the complexity of the control of the smoke exhaust system, reduces the normal operation energy consumption, improves the smoke exhaust efficiency, and is beneficial to structural design and construction treatment.

The invention discloses an air intake and exhaust pressure-bearing bidirectional pressure-regulating type water hammer protective device, and relates to a pipeline water hammer protective device. According to the invention, the problems of high installation height and water pollution existing for a directional pressure regulating tower are solved. According to the invention, the lower end of a pressue bearing water tank is provided with a supporting body; the top plate of the pressure bearing water tank is provided with an air valve opening and an overhauling port; the air valve opening is provided with an air valve; the overhauling port is provided with an overhauling closed cover; the bottom plate of the pressure bearing water tank is provided with a water injection opening and an air releasing opening; the water injecton opening is provided with a water injection pipe; the water injection pipe is provided with an overhauling valve; the air releasing opening is provided with an air releasing pipe; the air releasing pipe is provided with an air releasing vavle; the inner wall of the pressure water tank is provided with an air bag supporting plate; the air bag supporting plate is provided with an air bag; one side of the air bag is connected with the air bag supporting plate through an elastic pulling rope, and the other side of the air bag is connected with the inner wall of the pressure bearing water tank through the elastic pulling rope; and an energy dissipation plate is installed fixedly on the inner wall of the pressure bearing water tank. The air intake and exhaust pressure-bearing bidirectional pressure-regulating type water hammer protective device provided by the invention is especially suitable for a water pipe with obvious changes of topographic inequality.

The invention provides an urban road network brittleness evaluation method based on anomaly detection. The urban road network brittleness evaluation method comprises the following steps: A, identifying abnormal edges in an urban road network based on anomaly detection; b, proposing a road network brittleness evaluation method based on an abnormal index; c, proposing a road network brittleness evaluation method based on the abnormal region; and D, analyzing evolution characteristics of urban road network brittleness. According to the method, the road network brittleness evaluation method basedon anomaly detection is constructed by utilizing actual road network operation data, and a decision maker can intuitively analyze an anomaly generation period, a propagation period and a recovery period, so that a reasonable adjustment and control opportunity is selected; according to the geographical distribution condition of the abnormal area, key area adjustment and control are carried out preferentially; frequently-occurring abnormal road sections are excavated, road section level prevention and control and dispersion measures are provided, and therefore harm caused by road network brittleness is avoided or reduced; the method has the advantages of real-time performance, systematicness, easiness in research and judgment, wide application and the like.

The invention discloses a tunnel smoke exhaust method, which includes: (1) isolating an independent smoke exhaust air duct in the tunnel, the smoke exhaust air duct is provided with a smoke exhaust damper, and an exhaust air duct connected with the smoke exhaust air duct; The smoke connecting air duct is equipped with a smoke exhaust fan; (2) The smoke exhaust duct, the smoke exhaust damper, the smoke exhaust connecting air duct and the smoke exhaust fan do not work under normal conditions; (3) when When the smoke needs to be exhausted in the tunnel, open the smoke exhaust damper near the smoke source, discharge the smoke from the opened smoke exhaust damper into the smoke exhaust duct, and then exit the tunnel through the smoke exhaust contact duct. The invention also discloses a tunnel ventilation system implementing the above method, and the ventilation system is provided with an independent smoke exhaust device. The invention solves the harm caused by fire smoke easily spreading along the longitudinal direction when longitudinal ventilation is adopted in the tunnel, and the ventilation system is energy-saving and safe, and is suitable for one-way and two-way tunnels with various cross-sections such as arched, circular and rectangular. .