1589results about "Trolley lines" patented technology

Retard energy regenerated from an electrical motor during braking action is reinjected into a power system via trolley lines. The retard energy may be transmitted to a bidirectional electric substation and returned to a utility grid. The retard energy may also be transmitted to an auxiliary energy storage system, such as an ultracapacitor system or a battery system. Installing trolley lines for mining haul trucks on a downhill slope may be used to capture and re-use substantial quantities of retard energy.

A system for evaluating the condition of a pantograph, the system comprising: a track-side pantograph monitoring station that captures one or more images of a pantograph, while a locomotive comprising the pantograph is in normal service; a station management system that analyses one or more images captured at the monitoring site and determines the condition of the pantograph; and a user interface that controls the system and presents the results of the analysis to the user. A user may control the track-side monitoring station and station management system remotely.

The invention relates to an ice melting method for overhead contact system of an electrified railway and an ice melting system thereof. Major hazards of ice coating of the overhead contact system include accidents that pantograph of electric locomotives can not contact with a contact line to obtain current, contact system brandishes, even falls of piles and collapses, and the like. In the ice melting method and the ice melting system thereof, an upper overhead contact system and a lower overhead contact system are connected in series to form a circuit by a section post, AC or DC ice melting current is input at the head end of the circuit, ice coating thickness and safe ice melting current value are obtained by analyzing meteorological and overhead contact system parameters with an ice coating data processing and control module, and then the ice melting system is controlled to output the ice melting current at the end of the circuit, thus ice is molten by Joule heat generated by the current. In the ice melting method and the ice melting system thereof, ice attached to the contact line is molten by joule heat, and compared with the deicing modes of artificial knock and the like of operation departments, the ice melting method and the ice melting system thereof greatly improve deicing efficiency, thus reducing the effect on railway transport, and eliminating damages of external force on the contact line.

An electron emission device is provided comprising first and second substrates facing each other and separated from each other by a predetermined distance. An electron emission unit is disposed on the first substrate, and an image display unit is disposed on the second substrate. A focusing electrode comprising a plurality of beam-guide holes is disposed between the first and second substrates. The portion of the focusing electrode located near a beam-guide hole comprises a thin layer. The remainder of the focusing electrode comprises a thick layer having a thickness larger than the thickness of the thin layer.

An electric drive system is provided for use in a vehicle that is operated in environments with stringent emissions and ventilation regulations. In one embodiment, the electric drive system comprises a motor capable of propelling the vehicle and an energy storage device coupled to the motor, and selectively couplable to a catenary line, wherein the catenary line is capable of supplying electrical power to the vehicle and to the energy storage device. Additionally, the vehicle includes a mining device that is operable to be powered by energy from one or more of the catenary line and the energy storage device.

The invention discloses a preparation method of overlength Cu-Cr-Zr alloyed contact line. The smelting content in an induction furnace is Cu-(0.30-0.60) %Cr-(0.10-0.15) %Zr-(0.01-0.02) %Si alloy. By processes of continuous casting, extrusion, heat treatment, cold drawing and rolling, a contact line with a nominal area of 110-150mm<2> is prepared, under the conditions that processes are simplified and equipment and alloying components are fairly simple, the contact line with a length of simple root of the finished product being up to 1000-1500m has fine tensile strength, electrical conductivity and high temperature softening resistance.

A mining haul truck driven by electrical wheel motors is powered by a trolley power system during an uphill climb. Retard energy captured during braking action on either the uphill climb or downhill descent is stored by an on-board electrical energy storage system. Electrical power is supplied from the on-board electrical energy storage system to reduce the peak power demand on the trolley power system during the uphill climb. One implementation of the on-board electrical energy storage system uses an ultracapacitor system.

[Object] To ensure a wear measurement over an entire section of a trolley wire and to facilitate the wear measurement, and also to perform the measurement during daytime, without being affected by structures existing around the trolley wire.

[Means to solve] A line sensor 5 and an illumination lamp 6, which are placed in a direction of a scanning line perpendicular to a laying direction of a trolley wire, are mounted on a test car 1. The line sensor 5 shoots a pantograph contact surface of the trolley wire by the running of the test car, and this image signal is saved in a recording device 8 through a measurement computer 7. The measurement computer 7 arranges luminance signals of scanning lines, obtained by the line sensor 5, in time series, and creates a line sensor image. The measurement computer 7 gets a binary operated line sensor image from this line sensor image. The measurement computer 7 further removes sky parts from this binary operated line sensor image and detects edges of a trolley wire worn portion, then determines a width of the trolley wire worn portion through an overall width of the trolley wire and a height, viewed from the line sensor, of the trolley wire.

The chemical constituent (weight percentage) of the copper alloy material includes Te 0.1-1.2, Mg 0.2-1.3, Li 0.02-0.50 and Cu as the rest as well as unavoidable impurities. According to specification needed, the contact line of conducting wire is made through the procedures of getting conventional materials ready, mixture making, melting, casting ingot as well as cold working and hot working. Its copper alloy possesses the properties of tensile strength as 523-576 MPa, resistivity as 0.022695-0.023764 ohm mm2/m, recrystallization temperature as 390-410 deg.C. The invented alloy provides the capability of anti electric arc equivalent to the alloy of 0.3Ag-Cu but with lower cost than the 0.3 Ag-Cu alloy about 10-20%.

The railway system has a DC voltage catenary (20) connected to a rectifier bridge block (40) that is in turn connected to a transformer (30) joined to a three-phase AC grid (10). The device (50) has a first DC/DC voltage raising block (51) connected between the catenary (20) and an intermediate bus that is connected to a second DC/AC three-phase current generation block (52) joined to the transformer (30). The first block (51) allows raising the DC voltage of the catenary (20) generating a controlled voltage with which the second block (52) generates a high-quality three-phase current that is delivered to the grid (10).

The invention discloses a method for preparing a copper magnesium alloy contact wire. In the method, an as-cast copper magnesium alloy structure is broken by continuous extrusion and is re-crystallized to obtain a tiny and even grain structure so as to make the copper magnesium alloy contact wire have the super fine-grain strengthening effect. The method comprises production process flows of continuous casting, continuous extrusion and cold machining molding. Compared with the conventional production process for the copper magnesium alloy contact wire, the method ensures that as-cast grains of an oxygen-free copper magnesium alloy casting pole molded by continuous casting are broken by the continuous casting and continuous extrusion processes, and are re-crystallized under the action of thermal deformation to form a copper magnesium alloy contact wire pole blank having a fine-grain structure, and the pole blank is subjected to cold machining to prepare the high-strength copper magnesium alloy contact wire having the super fine-grain strengthening effect. The production process is simple and reliable, and yield and quality completely meet the requirements of the conventional high-speed electrified railways.

The invention relates to a contact screen detecting and overhauling car based on laser radar. The contact screen detecting and overhauling car comprises a detecting car body, a data acquisition unit, a lifting and rotating operation platform and a server used for data analyzing and processing. The data acquisition unit is arranged on the detecting car body. The lifting and rotating operation platform can be rotationally arranged on the back of the top of the detecting car body in a lifted mode and is provided with a display and control panel. The server is connected with the data acquisition unit and the display and control panel. Data collected through the data acquisition unit are analyzed and processed by the server and then transmitted to the display and control panel. According to the contact screen detecting and overhauling car based on the laser radar, the operation effect is improved significantly, the operation time is saved, and the labor intensity is relieved; moreover, after contact screens are maintained, the yield of the contact screens can reach 100%, and artificial misoperations in the maintenance process are avoided effectively.

A mining haul truck driven by electrical wheel motors is operated with all electrical power sources; that is, without a diesel engine. While travelling on the loading site, the mining haul truck is powered by an on-board energy storage system, which can comprise a bank of ultracapacitors. The mining haul truck then moves to the bottom of a trolley ramp and is coupled to trolley lines. While travelling uphill, the mining haul truck is powered by the trolley lines, and the on-board energy storage system is charged by the trolley lines. When the mining haul truck reaches the top of the trolley ramp, the mining haul truck is uncoupled from the trolley lines. While travelling on the unloading site, the mining haul truck is powered by the on-board energy storage system. The on-board energy storage system can also be charged by retard energy generated by the wheel motors during braking.

The present invention provides a monitor for monitoring a condition of a railway supply line when the supply line is in contact with a head of a pantograph of a vehicle in order to power the vehicle. The monitor includes a camera for monitoring parameters indicative of operating capability of the railway supply line and a reflective element including a pattern arranged on the pantograph head. The camera is arranged on the vehicle so as to register the pattern position with respect to a vertical direction. A pantograph and a vehicle are also provided.

The invention is concerned with a contact net system of high-speed electrical railroad made of some anchoring segments connecting with each other. Each anchoring segment relates to positioning device to wrist and arm, anchoring compensator, electric connecting equipment, suspension bowstring equipment and mid-point anchor equipment. The anchoring compensator sets at the two ends of each anchoring segment and the mid-point anchor equipment sets at the middle part of each anchoring segment. The connecting equipment of electricity sets at the inside of anchoring compensator and between the anchoring compensator and mid-point anchor equipment. Each anchoring segment has some positioning devices to wrist and arm and suspension bowstring equipments. It is fit to sustain, suspend, locate, machine, electric connecting and terminal anchoring to contact net system of electrical railroad with 200km/h, 50Hz single-phase and 25kV alternating current.

A full-compensation elastic chain hanging construction method for high-speed rail contact network, which comprises a construction preparing process, a construction measuring process, a software calculating process, a precasting process for sling and dropper, a mounting adjusting process for sling and dropper, and an ending process; each process is equipped with uniform and high-quality construction standards, and is assisted by modern construction meanses for satisfying with technical requirements for construction of high-speed rail contact network of 350 km/h; the software calculating process especially can obtain more accurate pre-stowage data of dropper length via a brand new calculating method finding form based on sling net, and then improve elastic chain hanging construction accuracy for high-speed rail contact net of 350 km/h. So the construction method does not only benefit for improving accuracy of sling and droppser calculation, and the construction method but also has high-quality construction standards and modern construction meanses, and is capable of improving quality and speed of construction of high-speed rail contact net of 350 km/h.

The invention belongs to the technical field of traction power supply and relates to an urban rail transit traction power supply system and a train-network matched parameter optimizing method. The urban rail transit traction power supply system comprises N traction stations, a direct-current contact system, an alternate-current power grid, a track and M to-be-tested trains. By setting inversion voltage starting thresholds of medium-voltage energy feedback devices in the traction stations, direct-current power energy generated by regenerative brake of the to-be-tested trains is inverted into alternate-current power energy with the same amplitude and the same phase as a first alternate current, the regenerative brake ability of the trains is exerted to the greatest extent, and the minimum circuit loss is realized.

The invention provides an automatic passing phase separation control device and a passing phase separation control system for multi-locomotives. The automatic passing phase separation control device comprises a phase separation section functional position signal receiving unit (10) for receiving and recognizing a phase separation section functional position signal, a level acquiring unit (20) for acquiring a level signal of a control handle, and a passing phase separation control unit (30) for receiving the phase separation section functional position signal from the phase separation section functional position signal receiving unit (10) and receiving the level signal from the level acquiring unit (20), outputting a level control signal based on the pulse width modulating form of the level signal according to the received functional position signal to control lifting of the level, and outputting a secondary control signal and a main circuit breaker on/off control signal to respectively control starting and shutting of a secondary machine and the switch off and switch on of the main circuit breaker. The passing phase separation device and system are beneficial to stably finish passing phase separation processes of a single locomotive and the multi-locomotive.

The invention provides a rigid contact net expansion joint, which belongs to the field of rail transit equipment and solves the problems that the existing expansion joint has low compensation amount to cause high total manufacturing cost and the like. The rigid contact net expansion joint is arranged between two bus bars. The rigid contact net expansion joint is characterized by comprising a fixed joint and a movable joint which can conduct electricity; the fixed joint and the movable joint are used for fixing with the connecting end of one of the bus bars respectively; a guide piece with electric conductivity for connecting the fixed joint and the movable joint is arranged between the fixed joint and the movable joint; the fixed joint is fixed with the guide piece; the movable joint can move along with the guide piece; and a contact line 1 for transmitting current to an electric system of a train is fixedly arranged on the guide piece. The rigid contact net expansion joint is a plug-in expansion joint, and the adjacent two bus bars and the expansion joint are arranged on the same straight line, so the expansion joint is favorable for improving the utilization rate of the bus bars, equivalently improving the length of an anchorage section, and has large compensation amount.

The invention discloses a novel power supply system applying an electrified railway of an outdoor modularized electric appliance to directly supply power, which comprises a traction substation, wherein the output side of the traction substation is connected with an uplink/downlink contact net; parallel equipment and skip zone equipment are arranged between tail ends of power supply arms of uplink/downlink contact nets of two adjacent traction substations; opening and closing equipment is arranged between the uplink/downlink contact nets and the feeder ends; the uplink/downlink contact nets are connected with the opening and closing equipment through two electric isolating switches; the opening and closing equipment is connected with two feeder ends through two internet insolating switches; the parallel equipment comprises a first parallel power supply unit and a second parallel power supply unit; the skip zone equipment comprises a first skip zone power supply unit and a second skip zone power supply unit; the two parallel power supply units are parallel modularized electric appliances for power supply; and the opening and closing equipment comprises four modularized electric appliances for opening and closing. The system has little floor area, reduces investment cost, and has high reliability, non maintenance, high industrial manufacturing degree and short construction period.

The present invention relates to a cantilever calculation and installation method of electrified contact line of high-speed railway, which comprises calculating the length of the flat cantilever, the length of the inclined cantilever pipe, the position of the positioning ring on the inclined cantilever and the cantilevers, preparing the cantilevers, and installing the cantilevers. The method belongs to the electromechanical field of rail traffic, in particular to the construction method of installing the flat cantilever and the inclined cantilever on the contact line of the high-speed railway. The method solves the problem that a large amount of line time is consumed in the construction because of the complex positioning of the flat cantilever and the inclined cantilever in the installation process. The construction method has high efficiency, makes full use of the time of non-closed points, accurately calculates and prepares the cantilevers, reduces a large amount of on-site adjusting time and railway holding time, and greatly improves the economic benefits.

The invention discloses a method for producing copper and aluminium composite slide wire, belonging to the technical field of material machining, characterized by comprising the following steps: making copper alloy bar into a prefabricated copper blank by using the continuous extruding process, extruding the made prefabricated copper blank and aluminium alloy bar in a continuous extruding machine for compositing, drawing, aligning, obtaining the copper and aluminium composite slide wire. The invention adopts the new continuous extruding process, the coiling product with the length of thousands of meters or more can be continuously extruded only by using the continuous feeding, the usage rate of the material is also high and can reach 95% to 98%. Copper and aluminium are composited in a vacuum cavity by extruding, the combined force is improved, the composited surface is clean and neat without the impurity, the electric performance is better.

The invention relates the constant tension compensation equipment, and belongs to the electrolyzed railway power supply technology field. The equipment comprises the spring on the substrate, and the said spring is the constant turning rule or linear changeable turning rule plane turbination spring with one end fixed opposite to the substrate and the other to the main shaft; the said main shaft is supported on the substrate and the shaft is rigidly set with the crown chute, the screw chute, the linear chute that are enwound by the steel wire lines. When the stress cable and the contacting wire lead the length change as the environmental temperature changing, the matching group of the springs and the chutes can be compensatively adjusted through the tension of the springs and maintain the constant tension on the stress cable and the contacting wires so as to meet the demand of the electrolyzed railway engineering. The invention has the strong points of tight structure, small volume, light weight and convenient equipment.