3results about How to "Decelerate fast" patented technology

The utility model relates to expressway emergency technology field, put forward a kind of vehicle-mounted automatic expressway rapid road sealing device, including mounting bracket, support plate, multistage telescopic frame, winding shaft, gear, servo motor and pull rope.Mounting bracket is located on vehicle, support plate is fixed in the middle part of mounting bracket, both sides are respectively equipped with multistage telescopic frame, winding shaft is rotatably connected with support plate, winding shaft top is equipped with gear, the output shaft of servo motor is fixedly connected with one gear, two gears are engaged with each other;Winding shaft winding pull rope is connected with multistage telescopic frame end respectively.Multistage telescopic frame is composed of multistage U-shaped frame body sleeve, and elastic sheet is equipped in each telescopic frame.One winding shaft upper end and lower end are equipped with threaded rod, threaded rod drives limit frame lifting by moving plate, limit frame is equipped with spring and limit block in it.Can be through the control multistage telescopic frame unfolding and contraction, form temporary roadblock behind expressway emergency operation vehicle, to realize rapid road sealing and vehicle deceleration.

The application provides a wing-body fusion back support engine reverse thrust device capable of inhibiting air intake distortion, which comprises a ring-shaped reverse thrust vane located on the inner side of a back support engine nacelle cover and reverse thrust flow guiding plates located on the two side surfaces of a back support engine nacelle support. When reverse thrust is needed, with the increase of the unfolding angle of the flow guiding plates, the hindering effect of the flow guiding plates on the forward movement of the reverse thrust air flow is more and more significant, so that the air intake quality of the turbofan engine during the reverse thrust work is ensured; in addition, the flow guiding plates also have the interference effect on the air flow similar to that of a spoiler, so that the form resistance is increased, which is beneficial to the faster deceleration of the airplane. The application effectively solves the adaptability problem of the reverse thrust device and the wing-body fusion back support engine, inhibits the occurrence of air intake distortion, strengthens the braking effect of the reverse thrust device, and guarantees the flight safety of the wing-body fusion back support engine layout.

The utility model relates to the technical field of handrail rails, in particular to a handrail rail for high-rise emergency escape, which comprises a rail and universal wheels, a separation mechanism is arranged on the rail, the separation mechanism comprises a fixed shaft, a torsion spring and a dust shield, the bottom of the dust shield is clamped with the torsion spring, and the bottom surface of the dust shield is rotatably connected with the fixed shaft. Through the arrangement of the separation mechanism, the two rows of dust shielding plates are separated through the universal wheels and the separation plate so that the universal wheels can roll in the universal wheel grooves, after the universal wheels pass through the dust shielding plates, the torsional springs are limited between the dust shielding plates and the rails, the dust shielding plates can cover the universal wheel grooves again through the bounce force of the torsional springs, and therefore dust and chippings are effectively prevented from entering the dust shielding plates, and the service life of the dust shielding plates is prolonged. Therefore, stagnation of the universal wheel caused by barrier blocking is avoided, meanwhile, jolting of the universal wheel caused by the barrier is avoided, the universal wheel runs more smoothly, and the best escape time is won for escapers.