7results about How to "Decelerate fast" patented technology

The invention relates to the technical field of detection equipment, in particular to a ship propeller static balance detection device which comprises a rotary table, a rotating and fixing arm and a supporting shaft, the axis of the rotary table is vertical, the rotating and fixing arm is horizontally installed on the rotary table, the length direction of the rotating and fixing arm is in the radial direction of the rotary table, and the supporting shaft is installed at the end, away from the rotary table, of the rotating and fixing arm. The axis of the supporting shaft is vertical, the supporting shaft rotates on the rotating and fixing arm, and a clamping structure used for fixing the propeller is arranged on the supporting shaft; the gravity center shift of the propeller is detected by using centrifugal force to replace the action of gravity in a traditional mode, and larger acting force can be provided for the propeller, so that small unbalance can be detected more easily, and the detection sensitivity is improved; through the damping structure, the propeller can be rapidly decelerated and stopped as soon as possible, the situation that the propeller needs to be naturally decelerated for a long time to stop in a traditional method is avoided, and the detection time is greatly shortened.

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 invention discloses a low-altitude manned aircraft, and relates to the technical field of manned aircrafts, the low-altitude manned aircraft comprises a cavity, the lower surface of the cavity is fixedly connected with a fixing plate, the upper surface of the cavity is provided with a flight mechanism, the flight mechanism comprises a fixing frame and a fixing box, the fixing box is fixedly connected to the outer surface of the cavity, and the fixing plate is fixedly connected to the fixing frame. The fixing frame is fixedly connected to the upper surface of the fixing box, and the flying mechanism is arranged, so that the cavity can complete take-off work under control, and the effect of flying in different directions in the air under control is achieved; an air circulation mechanism penetrates through the upper surface of the cavity, the air circulation mechanism is used for purifying air in the cavity, the air circulation mechanism comprises an exhaust pipe, the exhaust pipe penetrates through the upper surface of the cavity, and a first supporting rod is fixedly connected to the top end of the exhaust pipe; the end of the first supporting rod is fixedly connected with a stepping motor, and the effect that the aircraft can be flexibly changed to stop on the water surface and the ground is achieved.

The utility model relates to a tackle speed reducer which comprises a fixing frame, a rotating frame arranged above the fixing frame and provided with one end hinged to the fixing frame, and a plurality of rubber sheets evenly arranged on the two sides of the top of the rotating frame in the advancing direction of a tackle, and a rotating cam is rotationally assembled at the end, away from the hinged position of the fixing frame and the rotating frame, of the fixing frame. The rotating cam is located below the rotating frame, and the rotating cam can abut against the bottom face of the rotating frame and drive the rotating frame to rotate upwards in the upward rotating process, so that the tackle moves from low to high on the rotating frame. A plurality of grooves in one-to-one correspondence with the rubber sheets are formed in the top of the rotating frame, compression springs stretching out and drawing back in the direction perpendicular to the length extension direction of the rotating frame are arranged between the bottom faces of the grooves and the bottom faces of the corresponding rubber sheets, and the compression springs are used for jacking the rubber sheets upwards so that the rubber sheets can make friction contact with the tackle. The technical problems that a pulley is slow in speed reduction and long in braking distance are solved.

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.

The invention provides an emergency braking system and method of a vehicle and the vehicle. The emergency braking system includes an input module configured to receive an emergency braking request from a user and generate an input signal; the control module comprises a vehicle control unit, and the vehicle control unit is configured to generate an emergency braking instruction based on the input signal; a processing module including a battery management system configured to generate a power-off signal based on the emergency braking command; and the driving module comprises a motor, and the motor is configured to stop running in response to the power-off signal. According to the emergency braking system, the vehicle can be braked under the emergency condition according to needs. In addition, the emergency braking system of the present invention brakes the vehicle based on a user request and using the battery management system, whereby the vehicle can decelerate or stop faster, improving the safety of the user and the vehicle.