115 results about "Electric train" patented technology

The invention is directed to a foldable electric bicycle with power assist having a front portion attached to a rear portion via a central pivot post. The front portion maintains a steering column, handle bar system and a front wheel assembly having a front wheel and an electric power train. The rear portion includes a rear connecting arm to maintain the rear wheel. The central pivot post includes a first end that connects with the front portion and a second end which connects with the rear portion. A peddle assembly connects below the central pivot post and communicates with the rear wheel through a drive chain. A rechargeable battery capable of providing electricity to the electric power train is shaped to fit within a cavity and is located within the central pivot post. The rechargeable battery is positioned proximate the user so as to vertically align with the user's girth.

The present invention makes it possible to let a user arbitrarily and easily see any other scene than himself or herself in his or her view (the scene seen from any other moving body than him or her). In a display device (an image pickup and display device 1 or a display device 40), specification information is generated to specify a specific image pickup device of outer image pickup devices (the image pickup and display device 1 or and image pickup device 30), and image data are received from the image pickup device specifyed by the specification information and are displayed. As an outer image pickup device, for example, and image pickup device wore by some other person, image pickup devices set at a car, an electric train, and the like, or further mage pickup devices set at an animal, a bird, and the like are supposed. Image data picked up by these image pickup devices are transmitted to the display side and the image display is carried out in the display device. Thus, a user of the display device can see images of viewing scenes watched by other people, for example, images of viewing scenes seen from a car, an electric train, and the like, or images of viewing scenes seen from an animal, a bird, and the like.

The present invention relates to one copper-base composite material comprising multiple wall carbon nanotube 0.2-4.5 wt%, TiB2 0.1-1.3 wt%, except Cu-Sn alloy containing Sn in 0.35-12.0 wt%. It has excellent wear resistance, low friction coifficient, relatively high compression and tensile strength, moderate hardness, excellent electric conductivity and heat conductivity. It may be used in productino transmission bush, current collecting slid board for electric train and electric contact material.

A control unit is provided that controls a motor that opens and closes a door of an electric train such that, if an abnormality is detected by a position sensor, continuation of its open/closing operation can be maintained. The control unit includes an arrangement for computing the actual rotation speed and the magnetic polar position of the motor; a position sensor abnormality-detecting identifier unit for detecting abnormalities in the output of the position sensor; and a first controlling arrangement that generates voltage-instructing values by applying the magnetic polar position so as to cause a speed detection value to correspond to the speed instruction value. The control unit further includes a second controlling arrangement, which in turn includes an F/V arithmetic unit 24 and integrator 25; and a switcher unit 27. The F/V arithmetic unit 24 generates a voltage instruction value having a specific magnitude and phase corresponding to the speed instruction value by utilization of magnetic polar position data that is obtained via integration of a frequency corresponding to the speed instruction value. The switcher unit 27 selects either of the first and second controlling arrangements so as to generate voltage-instructing values for a power converter 3. When the output of the position sensor is normal, the switcher unit 27 selects a specific voltage-instructing value delivered from the first controlling arrangement, whereas if the position of the sensor 5 is abnormal, the switcher unit 27 selects a specific voltage-instructing value delivered from the second controlling arrangement.

A wireless system uses a direct UHF radio frequency (RF) signal to control electric trains and train accessories. A controller, such as a handheld unit used by the toy train operator, accepts control commands and transmits encoded control data over a high frequency radio link directly to a receiver, on the toy train or train accessory, which decodes the commands and controls the toy train or toy train accessory functions with either unidirectional or bidirectional communication between the controller and the model train or train accessory. One controller has the ability to control many trains and other model train layout components such as signals and track switches even while other train operators are operating their trains on the same electric train track layout.

The invention discloses an optical fiber distributed train monitoring system. The system comprises a rail roadbed and a main railway track arranged at the top of the rail roadbed, wherein a first branch railway track and a second branch railway track are connected with two sides of the main railway track respectively, the main railway track is provided with an interval detecting optical cable outside a station, a station area detecting optical cable with one end connected with the interval detecting optical cable is arranged between the first branch railway track and the second branch railway track, station area annular detecting optical cables are arranged on the station area detecting optical cable and located at the main railway track, the first branch railway track and the second branch railway track, and an interval running train runs on the main railway track. The system has the advantages that a detection front-end device is passive and resists electromagnetic interference, so that the system can still work normally and guarantee running safety of the train under the condition that other electric train control systems cannot work due to outage faults.

A collector device of an electric train and a collector method thereof are provided. The collector device includes a collector unit and a magnetic unit. The collector unit has a first side, a second side and a graphite skateboard. The first side and the second side are the two opposite sides of the collector unit, and the graphite skateboard is disposed on the first side, wherein the first side of the collector unit is in contact with a power source having a magnetically permeable capacity via the graphite skateboard, so as to draw an operation voltage. The magnetic unit has an electromagnetic coil body. The magnetic unit is configured on the second side of the collector unit, for providing an attractive force between the collector unit with the power source, so as to reduce a contact loss rate.

A plastic film distinguished in corona resistant characteristic having a low cost without a low mechanical strength, which plastic film is particularly suitable for making insulated wires, coils, and electric motors capable of fully responding to demands for providing electric trains with higher running speeds and higher acceleration and deceleration. In accordance with one embodiment, the film includes a base layer and at least one thermally conductive layer having a minimum thermal conductivity of 2 W/m.K, preferably 6 W/m.K, more preferably 15 W/m.K laminated horizontally on at least one surface of the base layer. In accordance with another embodiment, the film has a minimum volume electrical resistivity of 1014 OMEGA.cm, preferably 1015 OMEGA.cm, and includes a base layer and at least one low-electrical-resistance layer having a maximum superficial electrical resistance of 1013 OMEGA.cm, preferably 1012 OMEGA.CM. The thermally conductive layer is preferably formed from at least one inorganic compound or inorganic material selected from the group consisting of metal nitrides, metal carbides, metal silicides, and metal oxides.

The present invention is pantograph pan made of whisker reinforced C-Al-Cu composite material and its making process, and the pantograph pan of new material is used in high speed electric train. The composite material for the pantograph pan has whisker as reinforcing material, Al-Cu base material, C as self-lubricating anti-wear material, and Ni, Sn and Nb as additives. The pantograph pan is made through mixing all the components and hot pressing to form. The pantograph pan of the present invention has excellent conducting performance, high wear resistance, good shock resistance and less wear n the contact lines, and the material is suitable for high speed electric train as well as underground train and other electric vehicles.

The invention discloses a Cu-Cr in-situ composite with boron, silver and rare earth elements added and a preparation method thereof. The invention is characterized by adopting multimode comprehensive strengthening technology such as multi-micro alloying, solid solution strengthening, aging strengthening, fine grain strengthening, distortion strengthening, fiber strengthening and the like, using Cu as the base and adding a little Cr and trace Ag and B, rare earth or rare earth compounds to prepare the high performance copper alloy in-situ composite through smelting, casting, hot forging or hot rolling, solid solution treatment, cold rolling or cold drawing, aging and the like. The prepared material has the advantages of high strength, good electric and thermal conductivity, simple preparation process and low cost, thus realizing industrial application in the aspects such as electrician switches, contact materials, resistance electrodes, rotor conductors of large electrical high speed turbine generators, overhead conductors of electric cars and electric trains, lead frames of very large scale integrated circuits and the like.

A rotating electric machine for driving a drive object is provided. The rotating electric machine includes a motor case, a stator, a winding, a rotor, a base cap, an end cap, an output rod, base cap holes, end cap holes, and through bolts. The base cap has base cap flanges formed on a circumferential edge and extending radially-outward beyond an outer wall of the motor case. The end cap has end cap flanges formed on a circumferential edge and extending radially-outward beyond the outer wall of the motor case. Base cap holes are formed on the base cap flanges and end cap holes in axial alignment with the base cap holes are formed on the end cap flanges. Through bolts fasten the base cap flanges to the end cap flanges.

The embodiment of the invention relates to the field of power electronics, and discloses a braking resistor protection method and equipment for a main circuit of an electric train. Wherein, the braking resistor protection method includes: measuring the voltage VR applied to both ends of the braking resistor of the main circuit of the electric train; measuring the current IR flowing through the braking resistor of the main circuit of the electric train; calculating the ratio of the voltage VR and the current IR The quotient value is the real-time resistance value RR of the braking resistor of the main circuit of the electric train; compare the real-time resistance value RR with the braking resistance value RTmax corresponding to the set protection temperature, if the real-time resistance value RR If it is greater than or equal to the braking resistance value RTmax corresponding to the set protection temperature, the chopper circuit where the braking resistance of the main circuit of the electric train is located is disconnected. The embodiment of the invention can realize accurate protection of the braking resistor of the main circuit of the electric train, improve the reliability of the whole system and reduce the cost.

In a controller for an AC electric train which can perform powering and regenerating operations and can detect any power failure on AC overhead wires for supplying the AC power, detection of any powerfailure on AC overhead wires is carried out quickly without fail. A power failure detector (14) provided on an electric train controller (8) includes a specific frequency signal arithmetic operationsection (16) which extracts a current component corresponding to a specific frequency setting value (26) from a main transformer output current detection signal (7) to output the extracted signal as aspecific frequency current signal (18), a subtracter (19) which subtracts the main transformer output current detection signal (7) from the specific frequency current signal (18) to output the subtraction result as a current deviation (20), and a power failure detection section (23) which compares the current deviation (20) with a specified power failure detection setting value (22) and outputs apower failure detection signal (15) when the current deviation (20) is greater than the power failure detection setting value (22).

The invention discloses an economical power matching and distributing method for an electric train. The method comprises the steps of S1, obtaining train information, line information and a target running curve of a to-be-calculated area; S2, according to the train information, the line information and the target running curve, calculating a demand power percentage curve when the train runs basedon the target running curve; S3, forming a minimum power unit number and train running position curve according to the total number of minimum power units of the train and the demand power percentagecurve, and distributing the working states of all the power units according to the minimum power unit number and train running position curve to obtain instruction sequences for inputting or removingthe power units; S4, calculating the power units, put into work at all positions of the target running curve, among the power units, and calculating an actual level instruction sequence of each powerunit; S5, outputting the instruction sequences for inputting or removing the power units and the actual level instruction sequence of each power unit.

The invention provides an electric train power supply control method and system and an electric train. The electric train power supply control method is applied to an electric train power supply system; the electric train power supply system comprises a super capacitor, a fuel cell and at least one energy controller, the super capacitor and the fuel cell are electrically connected to the energy controller, and the energy controller is used for respectively controlling the working states of the super capacitor and the fuel cell; and the method includes the steps that the energy controller acquires the current motion state of an electric train, and the energy controller determines the working states of the super capacitor and the fuel cell according to the electric train motion state. By means of the electric vehicle power supply control method, an existing electric train power supply system is greatly simplified; a high-efficiency discharge interval of the fuel cell and the charge-discharge characteristics of the large-capacity super capacitor are used, corresponding design is carried out for power allocation of the fuel cell and the super capacitor under different running working conditions, the power supply system is simpler in control, and the electric train running energy consumption is comprehensively reduced.

A model vehicle, such as a model electric train, includes a model pantograph. The operation of the pantograph is automated using a motor, drive train, and control circuit. An upper articulating portion of the pantograph is mounting to the model vehicle using a breakaway assembly. The upper articulating portion may also be coupled to a drive motor via an elastic coupling permitting elastic movement of the upper portion independently of the drive motor.

An exciting inrush current suppression apparatus (6) for suppressing an exciting inrush current of a breaker (2) that opens/closes the connection of electric train lines (1) with a Scott connection voltage transformer (3). The exciting inrush current suppression apparatus (6) detects breakage phases when the connection of the voltage transformer (3) is broken. The exciting inrush current suppression apparatus (6) then measures the phase voltages of the phases of the electric train lines (1), and uses the detected breakage phases to turn on the breaker (2) on the basis of the measured phase voltages of the phases of the electric train lines (1).

[Problem] To propose a control apparatus for an electric train, in which the regenerative energy of a DC power feed circuit can be consumed without disposing the brake chopper or electric-double-layer capacitor of the DC power feed circuit.

[Means] A control apparatus for an electric train according to this invention includes an AC electric motor which drives the electric train, and a variable-voltage variable-frequency inverter which controls the AC electric motor, and further includes an auxiliary power source device connected to a DC power feed circuit, and load control means for controlling a load connected to the auxiliary power source device, wherein the load control means receives an inverter state signal representative of an operation state of the variable-voltage variable-frequency inverter from the it, and the load control means controls the load in accordance with the inverter state signal. Besides, the control apparatus for the electric train includes detection means for detecting DC power feed information representative of the DC power feed state of the DC power feed circuit, and the load control means controls the load in accordance with the DC power feed information.

A model electric train car possessing various movable parts which allow the train car's pivotally-mounted truck and coupler assembly to maneuver around tight curves without interference from model train steps, skirts or other train car parts in close proximity to the train coupler, thereby, avoiding derailment of the toy train. The steps, skirts or other train parts to swing, slide, rotate, or otherwise move away from the truck and coupler assembly, being attached to the train car by pins, hinges, slides, snap connectors or the like to allow the free movement of the train parts.

The invention discloses a method for manufacturing an aluminum alloy casting of an electronically controlled sliding door for a high-speed train and the casting. Temperature field wall thickness; metal type low-pressure mold preparation, when preheating the mold, heat the metal type low-pressure mold in different regions, and the temperature gradually decreases from the bottom to the top from the feed inlet to create a stable field of sequential solidification; spray paint When the paint thickness is from bottom to top, the order is from thick to thin, and the heat preservation is from top to bottom, from strong to weak; determine the aluminum alloy composition, Si6.5‑7.0%, Mg0.30‑0.40%, Ti0.13 ‑0.18%, Fe≤0.19%, Cu≤0.1%, Mn≤0.1%, Zn≤0.1%, other impurities≤0.1%, others are Al; low-pressure casting, low-pressure casting according to the preset low-pressure casting process parameters; casting Heat treatment, heat treatment of castings after pouring. The casting made by the aluminum alloy casting of the electronically controlled sliding door of the high-speed train provided by the invention has low cost and good quality.

This rotating electric machine includes a rotor including a rotating shaft portion, a rotor yoke surrounding the rotating shaft portion and a rotor core, arranged on the outer peripheral surface of the rotor yoke, having a plurality of permanent magnets circumferentially arranged thereon at intervals, and a stator arranged to be opposed to the outer peripheral surface of the rotor, while the rotor yoke and the inner peripheral portion of the rotor core are fixed to each other with a fixing member.

The invention provides a control method for a trackless electric train. The control method comprises the steps that terrain data of the scene where the trackless electric train is located are obtained through a sensing assembly; the position of the trackless electric train is determined in a geographic information system (GIS) according to a label included in the terrain data and the distance between the trackless electric train and the label; and a control strategy corresponding to the position is looked up according to the position of the trackless electric train, and a push motor and/or a differential control motor are/is controlled by generating a corresponding rotating speed control instruction according to the control strategy. According to the trackless electric train, multiple carriages can travel in a balanced mode through precise differential control, and the transport capacity of the trackless electric train can be conveniently increased.