33results about How to "Good speed limit" patented technology

The invention relates to a car driving speed-limiting system based on the GIS and a running method of the car driving speed-limiting system based on the GIS. The car driving speed-limiting system comprises an information collecting device, a GIS speed-limiting control unit, an output display end and an execution device; the information collecting device senses the distance between a car and a car in the front, the running speed of the current car and the throttle position information of the current car, collects positioning information of the current car and displays and updates static state road network information in real time; the GIS speed-limiting control unit extracts the initial speed-limiting value and the road characteristic parameter of a current road section according to the positioning information of the current car and the static state road network information, amends the initial speed-limiting value in combination with the distance between the car and the car in the front and the road characteristic parameter, obtains the best speed-limiting value, obtains the maximum allowing throttle percentage value through conversion and limits the car speed of the car. According to the car driving speed-limiting system and the running method, the speed-limiting values of the car in all road sections will be continuously adjusted along with changes of the road condition, the car cannot exceed the maximum speed-limiting value in the road section even though a driver does any operation, and the running safety is guaranteed.

The embodiment of the invention provides a speed limiting method, device and system, electronic equipment and a computer readable storage medium. The method comprises the following steps: acquiring alimiting rate of a current target network flow to be limited in speed; obtaining a target slave node for limiting the speed of the target network flow and a target speed limiting unit of the target slave node; obtaining the total inflow flow of the target network flow flowing into each target speed limiting unit in the current first time period; obtaining the next token generation rate of the token bucket of each target speed limiting unit in the next first time period according to the total inflow flow and the limiting rate of the target network flow flowing into each target speed limiting unit in the current first time period; and issuing the next token generation rate of each target speed limiting unit in the next first time period to each target slave node, so that the token bucket ofeach target speed limiting unit generates a token by adopting the next token generation rate in the next first time period, and the flow of the target network flow flowing out of the gateway cluster is less than the limit rate.

The present invention discloses an internal three-ring decelerator, which consists of a bearing frame, an output axle, an input gear axle, two side tooth ring plates, a middle tooth ring plate, an internal tooth ring, and three eccentric crank axles, etc., wherein three eccentric crank axles are mutually paralleled; synchronous planet gears are respectively arranged on three eccentric crank axles, and arranged in a triangle, the small teeth number difference transmission is realized in the meshing process of two side tooth ring plates and the middle tooth ring plate with the internal tooth ring, the phase difference is 180 degrees finally, the qualities of two side tooth ring plates are respectively arranged into one seconds of the quality of the middle tooth ring plate; the bearing frame and the output axle are connected as a rigid frame structure, the circular disks at two end of the frame support three eccentric crank axles, the positions of the input gear axle and the output axle are positioned in an identical axial line, and the input gear axle is meshed with three synchronous planet gears. The present invention has the advantages that the reliability is high, the transmission ratio is large, the movement is steady, the carrying capacity is strong, and the layout is reasonable, thus being particularly suitable for being used under the working condition that the large power and the large torque are required.

A novel drive mechanism for a bicycle, featuring a scissor assembly defined by plurality of arms pivotally interconnected in an expandable sequence. The scissor assembly is attached pivotally to a frame on both sides and via a rigid slot attached pivotally to pedal cranks whereby permitting cranks oscillating motion. The cranks reciprocal oscillating motion is transferred by the assembly into a linear pulling force connected to a drive wheel axle, equipped with a freewheeling reel, by a flexible ligament spiraled in the reel. The efficiency of assembly's power transfer kinetics lessens required human force, in addition, the speed is substantially increased because the cranks motion is confined to the most efficient frontal segment of the 360-degree orbit whereby eliminating back-upward segment of the circular motion pedals.

The invention provides an electric rotating machine. A tooth portion 30 of a stator is divided into first and second tooth portions 31, 32 and in a relatively movable manner between a first position in which a magnetic resistance between the tooth portions is small and a second position in which the magnetic resistance is relatively larger than in the first position. When the second tooth portion is in the first position, the following equation is satisfied: (total magnetic resistance of main magnetic circuit C1)<(total magnetic resistance of magnetic short-circuit C2)<=(total magnetic resistance of magnetic circuit between permanent magnets C3). When the second tooth portion is in the second position, it is satisfied: (total magnetic resistance of the magnetic short-circuit C2)<(total magnetic resistance of the main magnetic circuit C1), and (total magnetic resistance of the magnetic short-circuit C2)<=(total magnetic resistance of the magnetic circuit between permanent magnetics C3).

The invention discloses a spiral line rail aligning lift. The spiral line rail aligning lift comprises a lift car, guide rails and bearings. At least two spiral line guide rails are arranged on the wall face of a wall. Spiral line reels are arranged in the lift car. The center of the lift car is connected with central shafts of the spiral line reels through the bearings. The lift car is provided with turning wheels. The spiral line reels are provided with wheel rails, and the turning wheels are located on the wheel rails. Protection plates are arranged on the lift car and are attached to the spiral line guide rails, so that the lift car does not rotate when positioned. The spiral line reels are provided with driven teeth, and when driving force or rope power is applied to the driven teeth, the lift car ascends or descends in a spiral direction. Accordingly, the stable, safe and reliable potent effect is achieved.

The invention discloses a mechanical sealing structure for an air turbine assembly of a hypersonic aircraft. The mechanical sealing structure comprises a metal corrugated pipe, a corrugated pipe support, a clamping base, a static ring, a movable ring, a flexible graphite packing, a flexible graphite gasket, a baffle plate and a metal base. Fuel oil for cooling is injected into a bearing cavity through an oil conveying hole and flows around the baffle plate, and flowing and heat exchange of the area nearby the corrugated pipe are enhanced. The oil flows into a bearing ring cavity along an interlayer between a shaft and the baffle plate and finally flows out of a bearing cavity. The corrugated pipe is fixed by welding a metal support and the corrugated pipe, so that a good sealing effect can be achieved, and the strength of the joint can be ensured to reach the standard. Circumferential rotation is limited in a mode that grooves and convex teeth are arranged on the outer circle and matched with each other, and axial displacement compensation can be provided. The mode that the metal base clamps a silicon carbide moving ring is adopted, and the eccentric motion degree of the moving ring is reduced. The sealing device has the characteristics of high working temperature and rotating speed upper limit, good cooling and heat exchange effects, lower bearing working temperature and simple and reliable structure.

An optical phase-shifting component is used for shifting the phase and modifying the intensity of the light beam injected into the fiber (MMF2). The component is inserted upstream or downstream of, or at an intermediate position in, the fiber. The component uses two mirrors and multiple beam paths between the mirrors. An optical phase-shifting structure (e.g., a reflective phase mask with a structured surface, which can be a mirror is effective at each reflection of the beam and gradually splits the beam into faster and slower propagation modes. The faster modes are subjected to one or more reflections more than the slower modes and are thereby decelerated. The fast and slow modes are combined again and are then transmitted in a multimode fiber in which the modes have different propagation speeds. The difference in the propagation speeds is thus at least partly compensated.

The invention discloses an air-cooled structure of a magnetic levitation motor, comprising a rotor, a stator, a casing, a first radial magnetic bearing, a second radial magnetic bearing and a first thrust magnetic bearing, the first radial magnetic bearing, a stator, a second The radial magnetic bearing and the first thrust magnetic bearing are sequentially arranged in the casing from left to right, and the rotor is supported in the first radial magnetic bearing, the stator, the second radial magnetic bearing and the first thrust magnetic bearing, and the thrust disc is also included , a cooling fan and a second thrust magnetic bearing, the thrust disk is sleeved on the right end of the rotor, the cooling fan is fixed on the outer peripheral wall of the thrust disk, and the second thrust magnetic bearing is located in the housing and on the right side of the thrust disk. The axial length of the rotor in the thrust disk fan layout is shorter, the cantilever section at the tail is greatly shortened, and the volume of the heavy object at the cantilever end is also reduced by half. Under the condition that other structures of the rotor remain unchanged, the structure of the present invention can effectively improve the bending stiffness of the rotor, thereby Increasing the upper limit of the rotor speed is conducive to giving full play to the advantages of the magnetic suspension bearing.

According to a guide mechanism for a printing head of a 3D printer, the printing head is arranged on a sliding seat, the sliding seat is clamped between two horizontal guide rods, rollers and guide bottom plates are arranged in the horizontal guide rods in a sliding mode, the guide bottom plates play a main supporting role, and the rollers are only arranged for limiting the sliding speed of the sliding seat; and a speed limiting mechanism is arranged between each roller and the sliding seat, so that the printing head can follow a driving mechanism to act accurately in real time, and the transmission mechanism clearance is eliminated; and meanwhile, air cylinders are used as specific limiting mechanisms, so that the structure is simple and novel.

The invention discloses an inner three-ring reducer, which includes a bearing frame, an output shaft, an input gear shaft, two side gear ring plates, a middle gear ring plate, an inner gear ring, three eccentric crankshafts and other components, and three eccentric crankshafts They are parallel to each other, and synchronous planetary gears are respectively installed on them, and they are arranged in an equilateral triangle. The two side gear ring plates and the middle gear ring plate realize transmission with less tooth difference during the meshing process with the inner gear ring, and the phase difference It is always 180°, and the mass of the two side gear ring plates is set to half of the mass of the middle gear ring plate; the bearing frame and the output shaft are connected to form a rigid frame structure, and the discs at both ends of the frame support three eccentric crankshafts , the positions of the input gear shaft and the output shaft are on the same axis, and the input gear shaft meshes with three synchronous planetary gears. The invention has the advantages of high reliability, large transmission ratio, stable movement, strong bearing capacity and reasonable layout, and is especially suitable for use under working conditions requiring high power and high torque.

The invention discloses a vehicle type identification method based on base station switching and a computer-readable storage medium. The method includes: each base station separately collects the signal direction angles of passenger cars and commercial vehicles when switching to the base station, and according to the signal direction angles, Calculate the first direction angle characteristic interval corresponding to the passenger car of each base station and the second direction angle characteristic interval corresponding to the commercial vehicle; when a base station detects that a mobile terminal is switched to the base station, obtain the signal direction angle of the mobile terminal; The signal direction angle of the mobile terminal is compared with the first direction angle characteristic interval and the second direction angle characteristic interval of the one base station to obtain the vehicle type judgment result of the vehicle to which the mobile terminal belongs by the one base station; Based on the determination result of the vehicle model of the vehicle to which the mobile terminal belongs, the vehicle model of the vehicle to which the mobile terminal belongs is determined. The invention can effectively identify the types of vehicles on road sections, and can provide management basis for traffic control departments.

The high-precision 3D printer with a camera of this application is equipped with a speed limiting mechanism at the sliding guide rail of the printing head, so as to ensure that the printing head can follow the action of the driving mechanism in real time and accurately, eliminate the problem of the gap between the transmission mechanism, and at the same time, enhance the The adaptability of the system will not affect the printing operation of the printing head when the driving mechanism is suddenly excited, which improves the printing accuracy of the 3D printer and improves the ability of the printer to resist external interference.

In the 3D printer print head guiding mechanism of the present application, the print head is arranged on the sliding seat, and the sliding seat is sandwiched between two horizontal guide rods, and the rollers and the guide bottom plate are slid to be arranged in the horizontal guide rod, and the guide bottom plate plays the main role. Supporting function, the roller is only set to limit the sliding speed of the sliding seat, and a speed limiting mechanism is set between the roller and the sliding seat, so as to ensure that the print head can follow the driving mechanism in real time and accurately, eliminating the gap between the transmission mechanism At the same time, using the cylinder as the specific limit mechanism has a simple and novel structure.

The invention discloses a buffer device (1) which comprises a bumper transverse rod (10). The bumper transverse rod (10) is attached onto a vehicle frame (3) by a bumper connecting piece (15) and can longitudinally move relative to the vehicle frame (3). The buffer device is characterized in that the bumper connecting piece (15) comprises a support rod (105) and a pivot plate (107), the support rod (105) longitudinally extends, and the pivot plate (107) is pivotally connected with a buffer frame (3') by a second rotary shaft (106); the pivot plate (107) can rotate relative to the buffer frame (3') within preset angles. The buffer device has the advantages that the bumper transverse rod can sensitively react to deform even under the effect of low impact force, accordingly, excellent pedestrian protection effects can be realized by the buffer device in a low-speed state, and the buffer device with small deformation can be voluntarily restored.

The invention relates to a generator, in particular to a high-speed generator directly driven by an air turbine, wherein the high-speed generator is used for an air vehicle. The high-speed generator directly driven by the air turbine comprises a generator outer shell, a generator receiver and a turbine rotor, and further comprises a permanent magnet combination and a coil winding, wherein an annular airflow channel is formed by the turbine rotor and the generator receiver, the permanent magnet combination is in an circular ring shape and fixed on the periphery of a final-level rotor body of the turbine rotor, the coil winding forms a cylindrical shape and is arranged on the outer surface of the generator receiver in a surrounding mode, and the coil winding is fixed on the generator receiver through the generator outer shell. The high-speed generator directly driven by the air turbine has the advantages of being high in specific power, high in design total pressure dropping ratio, capable of well and automatically balancing the acting force of airflow on a wheel hub, compact in structure, capable of carrying out automatic cooling and capable of providing cooling air sources for the external.

The invention discloses a variable capacity small wind power generation device and a method thereof. The wind power generation device comprises a front generator, a disc friction clutch, a centrifugal clutch, a rear generator, a main shaft, blades and supporting structures of the blades. A front friction disc and a rear friction disc of the friction clutch are fixed to the front generator and a blade hub respectively, a throwing block and an outer cup of the centrifugal clutch are fixed to the main shaft and the rear generator respectively, only the friction clutch is engaged under the low wind speed condition, at the moment, the front generator generates electricity, as the wind speed increases, axial force and centrifugal force, borne by the blades and the supporting structures of the blades, increase, accordingly friction clutch is separated, meanwhile the centrifugal clutch is combined, and the rear generator starts to generate electricity. The wind power generation device is independent of a servo system, automatically adapts to a large wind speed range at low cost and can continuously operate, and improves wind energy use efficiency.

The invention discloses a mechanical sealing structure for an air turbine assembly of a hypersonic aircraft, comprising a metal bellows, a bellows support, a clamping base, a static ring, a moving ring, flexible graphite packing, a flexible graphite gasket, folding Flow plate and metal base; fuel for cooling is injected into the bearing cavity through the oil delivery hole, and flows around the baffle to enhance the flow and heat exchange in the area near the bellows parts; it flows into the bearing ring cavity along the interlayer between the shaft and the baffle Inside, and finally out of the bearing cavity. The metal support and the bellows are welded to fix the bellows, which can not only achieve a good sealing effect, but also ensure that the strength of the joint reaches the standard. The circumferential rotation is limited by the arrangement of grooves and convex teeth on the outer circle, and axial displacement compensation can be provided. The metal base clamps the silicon carbide moving ring to reduce the degree of eccentric movement. The sealing device has the characteristics of high working temperature and rotating speed upper limit, good cooling and heat exchange effect, low bearing working temperature and simple and reliable structure.

The application discloses a mechanical seal structure suitable for fuel cooling turbines, and relates to the field of mechanical seals. It is used for the oil-air seal between the rotary and static systems of the oil-immersed cooling bearing structure under the condition of high temperature and high speed, and solves the problem of high temperature in the working environment of the bearing. It includes a fixed base, a movable support, a rubber spring, a static friction ring, a dynamic friction ring and a baffle. The fuel oil for cooling is injected into the bearing cavity through the oil delivery pipe, and flows around the baffle plate to enhance the flow and heat exchange in the internal cavity area of ​​the friction dynamic and static rings. It flows into the bearing ring cavity along the interlayer between the sleeve and the baffle, and finally flows out of the bearing cavity. The rubber spring component is used in the mechanical seal structure, which can not only achieve a good sealing effect, but also provide the axial force required for the pre-tightening of the frictional static and dynamic rings by pressing and fitting with the end wall. Therefore, the mechanical seal structure has the characteristics of high working temperature and speed limit, good cooling and heat exchange effect, low bearing working temperature, and simple and reliable structure.