60 results about "Pantograph" patented technology

This invention discloses a method and system for acquiring pantograph contactor images, belonging to the field of railway power supply contact network detection technology. It uses a photoelectric sensor signal as a trigger. When the photoelectric sensor module detects an approaching train, it controls the pantograph imaging module to take a picture based on a system-preset speed and the radar's measured speed. After the train passes, the image's stretching / compression ratio is calculated based on the radar's final detected speed and the system-preset speed. The identified pantograph contactor image is then stretched, compressed, and segmented to obtain the final pantograph contactor image. By introducing a photoelectric sensor, both the sensor and radar can identify approaching trains. Furthermore, by combining the imaging process based on real-time radar speed measurement and a system-preset speed, even if a train is missed by the radar, the entire image acquisition process can be completed based on the photoelectric sensor's identification and the system-preset speed, avoiding the problem of missed trains by the radar.

The application discloses a high-speed railway pantograph-catenary arc electromagnetic radiation interference modeling analysis method, constructs a pantograph-catenary arc-pantograph power supply system integrated model containing a traction substation model, a traction network model, a train traction transmission system model, a train-track return current grounding system model and a pantograph-catenary arc model; under a pantograph-off arc transient condition, arc current is obtained through simulation calculation; and based on the arc current, a relationship between arc radiation power and spatial equivalent electric field intensity is established to represent the influence of time-varying characteristics of traction network electrical parameters on pantograph-catenary arc electromagnetic radiation interference. Under the pantograph-off arc transient condition, the real-time changes of impedance and capacitive reactance parameters of the traction network are involved in the unified solution of arc current formation, radiation power evolution and spatial electric field intensity calculation, and meanwhile, key coupling factors of the train high-voltage system and the train-track grounding system are mainly considered, so that the accuracy and engineering applicability of pantograph-catenary arc electromagnetic radiation interference analysis are improved.

This invention discloses a method and system for identifying abnormal wear conditions of pantograph carbon sliding plates based on random forest, belonging to the field of fault diagnosis and intelligent operation and maintenance. The method collects characteristic data of pantograph carbon sliding plate wear; preprocesses the characteristic data, and establishes an input matrix and a target vector based on the preprocessed characteristic data; uses the input matrix and target vector as training data to train a random forest regression model, and fine-tunes the parameters of the random forest regression model through cross-validation to obtain a parametric model of abnormal wear of the pantograph carbon sliding plate; based on the feature importance index of the parametric model of abnormal wear of the pantograph carbon sliding plate, it identifies the key causes of abnormal wear of the pantograph carbon sliding plate. This method can identify the wear condition of the pantograph carbon sliding plate and analyze the key factors under abnormal wear conditions, playing a significant role in maintaining the safe operation of trains.

The application provides a kind of intelligent monitoring method and device for pantograph, it is related to train safety monitoring field, solve in the pantograph monitoring, ignore the quality irregularity reduction problem caused by contact pressure and temperature of pantograph, and ignore the technical problem of adaptive monitoring to pantograph;The method comprises: obtaining the target data of current train pantograph;Adaptively set monitoring frequency based on target data, obtain the monitoring data of current train pantograph according to monitoring frequency;Determine the temperature aging factor based on the temperature of pantograph, determine the characteristic temperature aging factor of current pantograph based on the historical temperature aging factor;Determine the wear factor based on the contact pressure of pantograph, determine the characteristic wear factor of current pantograph based on the historical wear factor, issue the maintenance notice of current pantograph based on characteristic temperature aging factor and characteristic wear factor;The application can improve the accuracy of pantograph health quality identification.

The application discloses a subway door defect and pantograph abrasion state synchronous detection unmanned aerial vehicle carrying device, and relates to the technical field of unmanned aerial vehicle equipment, which comprises a carrying frame, a top shooting mechanism, a clamping mechanism, a fixing mechanism and a side shooting mechanism arranged in sequence from front to back on the carrying frame, wherein the side shooting mechanism comprises an electric sliding rail, a hydraulic telescopic rod, a holder and a side camera, one side of the hydraulic telescopic rod is fixedly connected to a moving table of the electric sliding rail, the other end of the hydraulic telescopic rod is fixedly connected with the holder, and the bottom of the holder is connected with the side camera, and the top shooting mechanism is provided with a Y-shaped support rod and a holder, and a directional camera is arranged on the holder.

The utility model provides a kind of pantograph overhauling circuit, comprising first air switch, first fuse, first button, second button, first relay, second relay, third relay, first time relay, second time relay, first indicator light, second indicator light, first pressure controller, first differential pressure controller, first solenoid valve;The utility model is innovative design to air path and circuit, when opening U9 valve simulation air path leaks, solenoid valve is disconnected and closed, and total wind source is cut off.Real-time detection and safety control to air path are realized, problems in air path system can be found in time and handled through this innovative scheme, to avoid the occurrence of safety accident, pantograph overhauling work is provided with more safe and reliable guarantee.

This invention discloses a device for detecting and clearing ice and snow debris from power lines, comprising five parts: a crawling mechanism, an obstacle-crossing and clearing mechanism, an eddy current heating device, an autonomous power-collecting device, and a drone docking and flight device. The autonomous power-collecting device includes an electromagnetic power-collecting device and a pantograph contact power-collecting device. The crawling device and the eddy current heating device are located inside an openable structure, while the outside of the openable structure is connected to the electromagnetic power-collecting device and the obstacle-crossing and clearing mechanism. Drone docking and flight devices are located on both sides of the crawling device, with the pantograph contact power-collecting device placed on top of the drone docking and flight devices. A main control unit is located between the crawling device and the electromagnetic power-collecting device. This invention solves the problem that traditional mechanical clearing methods easily damage power lines and accelerate wear. Simultaneously, this invention also addresses the safety hazards faced by existing clearing equipment and personnel, as well as the problem of short single-operation time due to battery performance limitations.

This invention relates to a pantograph device with adjustable humidity for the carbon sliding plate's working environment. The device includes a pantograph head, a pantograph head bracket, and a carbon sliding plate. The pantograph head also includes a mounting base rotatably fixed to the pantograph head bracket, a carbon sliding plate adjustment device disposed on the mounting base, and a slidable humidity chamber disposed on the pantograph head bracket. The carbon sliding plate is mounted on the mounting base via the carbon sliding plate adjustment device, which adjusts the carbon sliding plate to a humidity-controlled position. The humidity chamber allows the carbon sliding plate to slide inward, allowing it to enter the chamber for humidity control. This invention ensures constant humidity for the pantograph's carbon sliding plate under different environmental conditions, thereby improving the stability of current collection in various environments.

This application relates to a method for adjusting a pantograph on a heavy-duty truck, including pantograph raising control steps, pantograph lowering control steps, and emergency lowering control steps. It also provides a pantograph adjustment system suitable for the aforementioned method, including a pantograph raising control module, a pantograph lowering control module, and an emergency lowering control module. The pantograph adjustment method and system of this application check the air pump pressure and carbon plate thickness before raising the pantograph to reduce accidents during driving. It determines whether to raise the pantograph based on the driver's raising control command, providing intelligent control to assist the driver in controlling the pantograph. In cases requiring emergency lowering control, a longitudinal emergency lowering control is first performed to separate the pantograph from the contact wire, preventing damage to the hardware from remaining energized in an emergency.

This utility model relates to a pantograph tension measurement device, comprising: a housing, a locking structure, and a control device; one side of the housing is provided with a rotary drive device, a winding device, and a lifting rope wound on the winding device; the other side of the housing is provided with a speed controller for controlling the rotation speed of the rotary drive device and a power module; a tension / compression sensor is provided in the middle of the bottom surface inside the housing, and the force-receiving end of the tension / compression sensor is connected to a hollow force-guiding structure, through which the lifting rope passes and is hung on the pantograph head via a hook at its end; the locking structure includes a fixed bracket and an adjustable bracket; it avoids measurement errors caused by individual human differences, as well as problems such as the inability to achieve uniform speed and stability in manual measurement, and the inability to read vertically by visual inspection, making it easy to store and manage, improving the safety and reliability of operation; it has good adaptability and is easy to promote.

The utility model belongs to the technology field of pantograph, concretely relates to electric locomotive pantograph ice breaking device, including bearing plate, two bow -shaped boards are fixedly connected in bearing plate top, bearing plate top is fixedly connected with support seat, bearing plate top is fixedly connected with angle adjusting seat, the ice breaking device that scrapes ice layer is provided at angle adjusting seat top, the ice breaking device includes two recesss, two recesss all are established on angle adjusting seat top, two recesss inner wall all have and insert the plug -in board that inserts, two plug -in board top fixedly connected with same upper frame. The utility model solves the problem that single electric heating exists low heating efficiency, ice melting is slow in extreme low temperature, and the problem that high energy consumption continues to heat increases electric power load, and the problem that local overheating risk reliability is insufficient in the device, thereby removes thick ice layer, enhances ice breaking efficiency and reduces energy consumption, reduces the dependence on electric heating and enhances reliability, and the effect that adapts to extreme low temperature environment.

This application relates to a fairing and a rail vehicle. The fairing includes two covers arranged in a front-to-back direction. A groove is formed through one side of each cover along its thickness direction, and the width of the groove gradually decreases from top to bottom along the thickness direction. A first guiding surface is formed on the surface of each cover. The groove openings of the two covers are connected, forming a pantograph hole. A second guiding surface is formed on the inner wall of the groove, circumferentially surrounding the pantograph hole. The first and second guiding surfaces are circumferentially connected. This fairing can effectively reduce the aerodynamic noise of the pantograph hole, improve the comfort of the driver and passengers, and reduce noise interference with normal train operation.

1. The name of the design product: the track train pantograph fairing. 2. The use of the design product: for installation on the train for protecting the train pantograph protection shell. 3. The design points of the design product: in shape. 4. The picture or photo that best shows the design points: perspective view 1.

This invention relates to the field of rail train technology, providing a pantograph contact force switching control circuit and method, and a rail train. The circuit includes: a contact network power supply system identification circuit, which identifies the current contact network power supply system and outputs the identification result; the power supply system includes at least DC power supply and AC power supply; a switching control circuit, which outputs a switching command based on the power supply system identification result; a control terminal of an air circuit switching valve group electrically connected to the switching control circuit, which switches to a first or second working position according to the switching command; and first and second pressure setting valve groups, the input terminal of the first pressure setting valve group being connected to the first working position and outputting a first preset contact force required for DC power supply; the input terminal of the second pressure setting valve group being connected to the second working position and outputting a second preset contact force required for AC power supply, both output terminals being connected to the pantograph lifting airbag. This invention achieves dynamic adaptation of contact force when the train is running on a DC / AC hybrid line.

The application discloses a kind of graphite lubricating material, lead-free copper-based pantograph slide and preparation method thereof, belong to rail transit vehicle accessory field.The graphite lubricating material includes base material and graphite strip;The base material includes copper base material, and a plurality of long slot is formed on the copper base material, and perpendicular to the movement direction;Graphite strip includes copper foil layer and graphite-based powder arranged in the copper foil layer, and the copper foil layer and graphite-based powder are formed by pressing, sintering integral part.The graphite strip of the application is formed by copper foil wrapping graphite-based powder, pressing, sintering integral part, so that the graphite strip has better structural strength, can be processed to form graphite strip with higher aspect ratio, and is arranged perpendicular to its movement direction, which not only can form continuous lubricating surface, thereby improving lubricating effect, but also reduces the number of graphite strip, thereby reducing the difficulty of assembly process.

This invention relates to the field of rail train technology, providing a pantograph contact force switching control circuit and method, and a rail train. The circuit includes: a contact wire type identification circuit, which identifies the current contact wire type and outputs the type identification result; the type includes at least rigid contact wire and flexible contact wire; a switching control circuit, which outputs a switching command based on the type identification result; a control terminal of an air circuit switching valve group electrically connected to the switching control circuit, which switches to a first or second working position according to the switching command; and first and second pressure setting valve groups, the input terminal of the first pressure setting valve group being connected to the first working position and outputting a first preset contact force required for the rigid contact wire; the input terminal of the second pressure setting valve group being connected to the second working position and outputting a second preset contact force required for the flexible contact wire, both output terminals being connected to the pantograph lifting airbag. This invention achieves dynamic adaptation of contact force when the train runs on a mixed rigid-flexible contact wire line.

This application relates to an intelligent pantograph fault monitoring system and method based on image processing. The system includes: a preprocessing module for acquiring multi-source raw data from the pantograph and preprocessing visible light image data from the multi-source raw data to obtain a pantograph image; an identification module for performing multi-dimensional independent fault identification based on the pantograph image to obtain fault identification results; an analysis module for performing correlation analysis on the relationships between faults based on all the fault identification results to obtain multi-fault correlation analysis results; a risk module for quantifying the fault identification results and the multi-fault correlation analysis results into fault severity to obtain a comprehensive risk assessment result; and a reporting module for generating a complete fault report corresponding to the pantograph based on the comprehensive risk assessment result. This system can take into account the hidden danger mechanisms of different parts of the pantograph and perform accurate analysis according to the fault type.

This invention provides a method for construction replacement and parameter verification of AC / DC converter devices, relating to the technical field of smart grids. The method includes: acquiring the first pantograph-catenary state sequence, geometric parameter set, and tension parameter set corresponding to the phase-splitting device; constructing a multi-pantograph coupling disturbance function based on the pantograph-catenary state sequence and generating a disturbance distribution set; performing dynamic negative sag parameter reconstruction processing on the phase-splitting device according to the disturbance distribution set; performing spatial curve reconstruction processing based on the dynamic negative sag parameters and geometric parameter set to obtain a target geometric parameter set; performing construction replacement and iterative adjustment control on the phase-splitting device according to the target geometric parameter set and tension parameter set; performing disturbance consistency verification based on the updated second pantograph-catenary state sequence, and performing reverse correction of the dynamic negative sag parameters according to the verification result, outputting the verification result when preset conditions are met. This invention can improve the efficiency of construction adjustment in multi-pantograph coupling operation scenarios.

The application provides a side pantograph for a mine dump truck, comprising a bow head assembly, a power head assembly and a limiting assembly. The bow head assembly is used for connecting a power arm, and the bow head assembly comprises a bow head supporting plate, and a bow head supporting groove is arranged on the bow head supporting plate. The power head assembly is used for contacting a power rail. The limiting assembly is arranged between the bow head assembly and the power head assembly, and the limiting assembly comprises a limiting column. When the limiting column is limited in the bow head supporting groove, the bow head assembly is limited in the power head assembly. When the limiting column is separated from the bow head supporting groove, the bow head assembly can rotate relative to the power head assembly. The side pantograph of the application is accurate in a contacting position with the power rail and has good contact after entering the power rail.

This invention discloses a multimodal data transmission system and method for a pantograph monitoring system, including a roof-mounted detection module, a transmission link, and an in-vehicle host computer. The roof-mounted detection module integrates a one-dimensional signal detection unit, a two-dimensional signal detection unit, a main control unit, and a buffer unit. The one-dimensional and two-dimensional signal detection units are respectively connected to the data input terminal of the main control unit through signal interfaces. The buffer unit is integrated with or electrically connected to the main control unit. The data output terminal of the main control unit is connected to the roof of the transmission link through a high-speed serial interface. The in-vehicle end of the transmission link is connected to the in-vehicle host computer. The in-vehicle host computer periodically sends a synchronization trigger signal through the transmission link to trigger the data packaging and uploading of the roof-mounted detection module. Time reconstruction and multimodal data alignment are performed based on the returned data. This invention improves the alignment accuracy of one-dimensional waveforms and two-dimensional images on the time axis from milliseconds to microseconds, ensuring the absolute accuracy of arcing event location.

This invention discloses a pantograph bracket with pressure detection function, belonging to the field of pantograph technology. It includes a bracket body and an integrated control system. A connecting end seat is fixedly installed at the end of the lower arm, and a pressure-detecting turntable is installed at the end of the rotating support arm. Balance measuring shafts, rotatably connected to the pressure-detecting turntable, are installed on both sides of the connecting end seat. A pressure-contact piston disc is connected to the outer wall of the balance measuring shaft via a torsion connector. By installing the pressure-detecting turntable and balance measuring shaft at the rotating part of the lower arm and upper frame, the lower arm and upper frame gradually develop an angle during pantograph raising. This allows for precise acquisition of the pantograph raising time during the raising phase, achieving accurate monitoring of the raising time, avoiding equipment damage and operational risks, and precisely controlling the raising distance of the sliding carbon plate after contact with the contact wire. This ensures that the pressure between the sliding carbon plate and the contact wire is not affected by carbon plate wear, maintaining constant contact pressure, significantly extending the carbon plate life, and reducing contact wire damage.

The application discloses a pantograph head assembly with a damage monitoring function and a pantograph, and the pantograph head assembly comprises a carbon slide plate and a slide plate beam, a sealed cavity is formed between the slide plate beam and the carbon slide plate, an air pressure sensor is connected with the sealed cavity, and an air pressure change signal is monitored. By forming the sealed cavity between the carbon slide plate and the slide plate beam and cooperating with the air pressure sensor to monitor the air pressure change of the sealed cavity in real time, online and real-time monitoring of the carbon slide plate fracture damage is realized, the monitoring response is rapid, the sensitivity is high, and carbon slide plate cracking, damage and other faults can be found in time. The sealed cavity can be formed in a vacuum extraction or pressurization mode to form an internal and external air pressure difference; when the carbon slide plate is fractured, the sealed cavity is connected with the atmosphere, the air pressure changes instantaneously and significantly, and once the air pressure sensor detects air pressure abnormity, the pantograph can be controlled to descend rapidly, secondary damage caused by the carbon slide plate rubbing against the overhead contact system after the carbon slide plate is fractured is avoided, safety accidents such as wire scratching and power failure are prevented, and the safety and reliability of the pantograph and track traffic operation are improved.

This application provides an expansion joint assembly and a rigid contact network. The expansion joint assembly includes two joint plates, each with its two ends used to connect to two adjacent beams, allowing for an expansion gap between the two beams. Each joint plate is provided with a jumper wire electrically connected to the corresponding beam, and the jumper wire is a flexible wire. It also includes a transition plate, fixedly connected to one of the joint plates. The beam corresponding to this transition plate is used to cooperate with the pantograph, and the transition plate spans the gap between the two corresponding beams. The transition plate is provided with a guide angle for cooperation with the pantograph. By connecting adjacent beams in the rigid contact network with the two joint plates, an expansion gap is reserved between adjacent beams. Furthermore, the transition plate is provided in the expansion gap between the beams cooperating with the pantograph, facilitating the pantograph to cross the gap between the two beams.

The application discloses a pantograph-catenary arc electrical characteristic and transient overvoltage analysis method considering the influence of time-varying parameters, in which, in the transient analysis of pantograph-catenary off-line arc, time-varying impedance and capacitive impedance parameters of a traction network are introduced into the pantograph-catenary arc electrical characteristic formation process for the first time, and an improved arc model considering the influence of train speed and a fine train-track grounding system model are combined to realize the unified analysis of the overvoltage of a train roof and a train body, avoid the overvoltage evaluation deviation caused by the static traction network parameters and the simplified grounding model, and improve the accuracy and engineering applicability of the pantograph-catenary off-line arc transient overvoltage analysis.

The present application provides a straddle-type monorail car pantograph copper slider thickness detection method, storage medium and system, belongs to the straddle-type monorail car technical field. Including step one, the pantograph copper slider image is collected, step two, based on the pantograph copper slider image collected, the image is pretreated;Step three, the wear coefficient is constructed, the pantograph copper slider wear threshold is preset, the wear coefficient is compared with the pantograph copper slider wear threshold, whether the pantograph copper slider meets the safety use requirement is identified;Step four, the wear trend index and the defect evaluation index are obtained;Step five, finally, the wear trend index and the defect evaluation index are associated, and the comprehensive influence coefficient is constructed. Through the pantograph copper slider image collection, processing, and based on the pantograph copper slider data atlas extraction of the thinnest and thickest thickness information, the wear coefficient is constructed, and whether it meets the safety use requirement is identified in time, so as to avoid the operation risk caused by excessive wear.

The application discloses a kind of synchronous control method, device, equipment and computer readable storage medium, applied to rail transit field, by parallel execution timer interrupt task and motion control task, timer interrupt task includes: when timer timing reaches preset value and triggers interrupt, the movement target point of synchronous update mechanical arm and the vibration target point of additional axis;Motion control task includes: control mechanical arm according to movement target point and continuous point to point logic executes multi-degree-of-freedom motion, and control additional axis according to vibration target point executes vibration.The application restores the complex motion state of pantograph under real working condition by the coordination of additional axis and mechanical arm, and solves the problems of response delay, trajectory jump, phase mismatch and other problems in traditional control architecture by the real-time response characteristics and synchronous control logic of timer interrupt, improves the real-time performance, motion smoothness and synchronization accuracy of pantograph-catenary simulation system, enhances the credibility and accuracy of simulation test.

This invention discloses a method and system for assessing the wear status of a pantograph, relating to the field of intelligent condition assessment technology for transportation equipment. The method includes: constructing a time-series window by performing time alignment and standardization processing on multi-source operational data; identifying abnormal change segments and extracting candidate abnormal fragments to generate event vectors; clustering the event vectors to obtain event cluster vectors and determining the hierarchical wear evolution intensity; updating the wear memory state based on this, generating wear adjustment actions and determining the wear increment, thereby obtaining the cumulative wear status and remaining lifespan. This method continuously characterizes the abnormal evolution process and combines multi-source information to achieve dynamic assessment of the wear status, improving the accuracy and stability of the assessment results.

This invention belongs to the technical field of railway traffic safety monitoring. It discloses a method and system for pantograph status recognition on high-speed trains based on an improved YOLOv8 model. The method includes: acquiring pantograph video streams during high-speed train maintenance and constructing a pantograph detection dataset; constructing an improved YOLOv8 target detection model, introducing a deformable convolutional network into the backbone network for feature map extraction; training the pantograph status recognition model; and inputting real-time video stream images into the trained pantograph status recognition model to output recognition results. This invention constructs an improved YOLOv8 target detection model, significantly improving the model's adaptability to changes in pantograph shape and size by introducing a deformable convolutional network structure in the feature map extraction stage. It can adapt to irregular pantograph shapes, effectively improving the recognition accuracy of pantograph lifting and lowering states, and can accurately extract features in complex backgrounds, achieving high detection accuracy.

The utility model discloses a pantograph frame deformation correction frock relates to rail transit equipment maintenance technical field, include: workstation, clamp arm, the two sides symmetrical setting of the pressing plate, its moving path is aligned with the deformation of the pantograph, the first arc part and the second arc part, the width of the lower triangle area of this scheme is greater than the width of the deformation of the pantograph, when the pantograph deformation enters into the lower triangle area, two clamp arms rotate to both sides, have the effect of guiding rotation, when the pressing plate goes up, the pantograph extrusion second arc part intersection, make second arc part and opposite first arc part contact, the upper triangle area reaches the steady state, can complete the traction to the deformation of the pantograph, can automatic guide and form the lifting area, need not the deliberate operation spacing structure to carry out the connection to the pantograph, and the operation is simple and convenient and quick.

The application discloses a kind of seismic time bridge on car bow-net current collection performance simulation test systems, including vibration table device, railway track simulation device, contact network simulation device and driving device;Railway track simulation device's track board is installed on the vibration table of vibration table device;Contact network simulation device is installed in the side of track board;Driving device's wheel is placed on the rail of railway track simulation device;Railway track simulation device is provided with line acceleration sensor, and contact network simulation device and driving device are respectively provided with wireless acceleration sensor;Through each sensor and numerical model simulation module real-time connection transmission data, the contact performance between bow-net is evaluated using the simulated seismic experimental data measured by acceleration sensor at different positions.The whole experimental measurement data is more accurate and scientific, and the test is also more simple and fast.