562 results about "Contact wire" patented technology

The invention relates to the technical field of measurement and automation, in particular to a non-contact wire diameter identification method and system, and the method comprises the steps: enabling a CCD camera and a laser range finder to aim at a remote cable identification target, and obtaining a cable image and the spatial position information of the cable image; inputting the cable image into a trained cable type identification model for feature extraction and classification processing to obtain a cable type, and determining an edge detection preset parameter corresponding to the cable type; edge extraction and contour segmentation are carried out based on the cable image and edge detection preset parameters, and the pixel length of the cable diameter is obtained according to geometric characteristic estimation of the segmented contour; based on the spatial position information of the cable and the pixel length of the diameter of the cable, performing scale conversion from an image to a physical world to obtain the actual length of the diameter of the cable; and based on the actual length of the cable diameter and the cable type, searching a matching item in a preset cable model database to obtain a cable model identification result.

The application discloses a hanging rail type contact wire abrasion detection robot clamping and walking device, which realizes quick, automatic and reliable installation and locking of the detection robot on a narrow tunnel space and a Π-shaped busbar, and discards traditional heavy manual operation. The detection robot can automatically identify and smoothly pass through a pre-tightening bolt on the Π-shaped busbar, realizes uninterrupted continuous detection, overcomes the blockage of fixed obstacles, is not prone to be stuck, and improves the applicability of the overall device.

The invention discloses an intelligent detection method for a catenary concealment defect based on a multi-modal large model, and belongs to the technical field of intelligent inspection of a rail transit power supply system. According to the method, multi-source sensing data such as images, laser point clouds, infrared thermograms and structural sound waves are fused, and a unified multi-modal input data set is constructed. And the data quality and the fusion precision are improved through processing means such as space-time synchronization, registration and feature normalization. A multi-mode large model based on a Transform framework is adopted to carry out deep semantic modeling on fused data, feature information related to hidden defects is automatically extracted, and accurate recognition and positioning of early defects such as insulator fine cracks, early corrosion of hardware fittings, local corrosion of contact lines and micro displacement of a suspension system in an overhead line system are achieved. According to the method, the automatic and intelligent recognition capability of the catenary concealment defect can be remarkably improved, and the method is suitable for various scenes such as high-speed railways, urban rail transit and heavy haul railways.

The invention discloses a modeling method and system for a vehicle network field circuit coupling model under a contact line short-circuit working condition, and relates to the technical field of modeling, and the method comprises the following steps: constructing a short-circuit arc equivalent model under the contact line short-circuit working condition based on an isolation switch equivalent model, one end of the short-circuit arc equivalent model is connected with a contact line in sliding connection with a pantograph in the chain type lumped tau-shaped network model through a switch element, the other end of the short-circuit arc equivalent model is connected with a steel rail in the chain type lumped tau-shaped network model, and a vehicle network circuit model under the contact line short-circuit working condition is obtained; and taking the short-circuit arc current at any short-circuit phase obtained through simulation of the vehicle network circuit model as a current excitation source of the three-dimensional model, and obtaining a vehicle network field model under the contact line short-circuit working condition. The rise rate, peak value and attenuation process of the short-circuit current can be accurately simulated by adding the short-circuit arc, the arc voltage drop is reflected, and the authenticity and practicability of simulation are remarkably improved.

The invention relates to the technical field of electrical equipment, in particular to relay protection equipment with a wire harness carding structure, the equipment is mainly composed of a power distribution cabinet, a support frame and an adjusting mechanism, a cabinet door is arranged on the front side of the power distribution cabinet, the support frame is fixed on the inner wall of the power distribution cabinet, and the adjusting mechanism is matched with the support frame to realize a wire harness carding function. The adjusting mechanism comprises a first sliding frame, a rotating frame, a stress frame, an auxiliary assembly and the like. The first sliding frame slides in the first sliding groove of the supporting frame through the first sliding wheel, and the position can be adjusted. The rotating frame is slidably connected with the first sliding frame and can drive the auxiliary assembly to deflect. The auxiliary assembly can clamp and comb the wire harness, the first clamping plate is connected with the elastic assembly, the elastic assembly deforms when making contact with the wire harness, the contact area is increased, and the wire harness is prevented from being damaged. And the auxiliary assembly can also drive the second clamping plate to overturn to clamp the wire harness, so that the stability is enhanced. The equipment effectively solves the problem that the wiring harnesses of different types of relay protection equipment are bent during installation, and the operation stability of the equipment is improved.

The invention relates to the technical field of grinding, and particularly discloses a grinding system for an anti-electro-corrosion contact line, which is used for solving the problem of potential safety hazards caused by lack of real-time anomaly detection on the ground contact line in the prior art. Contact line polishing parameters are obtained through laser scanning, ultrasonic detection and a sensor, a standard contact line polishing image is obtained through a high-pixel camera to serve as a first polishing image, and a real-time contact line polishing image is obtained to serve as a second polishing image. First surface feature data is extracted according to the contact line surface data for data processing, and first polishing image features are obtained based on the first polishing image and second polishing image features are obtained based on the second polishing image; and according to the contact line polishing parameters, the first polishing image features and the second polishing image features, a layered abnormal response model is constructed to obtain abnormal polishing parameters, and polishing abnormality judgment is performed based on the abnormal polishing parameters, so that the contact line polishing quality is ensured, and the potential safety hazard of electric corrosion is prevented.

The invention provides a wire clamping type overhead line system elastic sling hydraulic driving device, which belongs to the technical field of overhead line system installation and comprises a supporting beam, a balance weight, a supporting frame and a balance weight adjusting assembly. According to the wire clamping type hydraulic driving device for the elastic sling of the contact network, under the condition of non-extreme strong wind weather, the balance weight can automatically adjust the carrier cable and the contact wire, so that the carrier cable and the contact wire are kept in a straightened state, the use cost input of a hydraulic driving structure is reduced, and the working efficiency is improved. And under the condition of extremely strong wind weather, the carrier cable and the contact line can be adjusted by means of the hydraulic cylinder, so that the carrier cable and the contact line are kept in a straightened state, and the working stability of the carrier cable and the contact line is effectively guaranteed. In addition, the control assembly can timely discover falling of the balance weight and send a warning signal to a worker, the reaction time is shortened, and the operation risk is reduced.

Control cables in a surgical instrument are kept parallel to the instrument's longitudinal axis to prevent transverse forces from the cables being sensed by a transverse force sensor in the instrument. A surgical instrument includes an elongated hollow shaft having a longitudinal center axis. Multiple cables extend within the shaft. A force sensor includes a beam disposed within the shaft and one or more strain gauges disposed on the beam. A proximal anchor is disposed within the shaft and in contact with a proximal end of the beam. A distal anchor is at the distal end of the shaft and in contact with a distal end of the beam. A cable guide is disposed within the shaft to constrain portions of the multiple cables disposed alongside the beam to movement parallel to the center axis, and so prevent force from the moving cables causing transverse force on the beam.

The invention discloses a system for simulating the contact condition of a pantograph and a contact net after an earthquake. Relates to the field of railway bridge contact net anti-seismic tests. The system comprises a contact network simulation assembly, a train simulation assembly and a vibration table assembly. The contact network simulation assembly comprises a winch, a contact rope and two supporting columns. The two supporting columns are fixedly arranged at intervals, the winch is arranged at the top ends of the supporting columns and used for driving the contact rope to slide between the two supporting columns, the train simulation assembly comprises a train body, wheel parts arranged below the train body and a pantograph arranged on the train body, and the pantograph is in contact with the contact rope; the vibration table assembly comprises a table body and a vibrator used for vibrating the table body. The table body comprises a plurality of table tops which are independently arranged; the wheel part is placed on the table body; the vibration table assembly is adopted, each wheel below the train head is placed on the corresponding vibration table, and compared with the situation that a large vibration table top is placed below each wheel of a front bogie and a rear bogie, the real situation that the vibration states of all the wheels are different when a train runs on an unsmooth track after an earthquake is better met, the requirement for laboratory equipment conditions is lower, and the working efficiency is improved. Theoretically, test simulation is easier to realize, and the test result is more real, accurate and comprehensive.

The utility model discloses a printer which comprises a main machine, a conveying assembly and a printing assembly, the conveying assembly comprises a conveying rubber roller and a floating rubber roller, a conveying channel is formed between the conveying rubber roller and the floating rubber roller and extends in the first direction, the printing assembly comprises a printing rubber roller and a printing piece, and a printing channel is formed between the printing rubber roller and the printing piece. The printing channel extends in the second direction, the second direction and the first direction form an included angle, and the side face, close to the printing channel, of the printing piece faces the conveying channel and forms a printing face used for making contact with the thermal transfer ribbon, so that the contact area of the to-be-printed piece and the thermal transfer ribbon can be reduced, and friction between the to-be-printed piece and the thermal transfer ribbon is reduced. And the pressure of the thermal transfer ribbon which is not in contact with the wire marking tube on the printed piece can be reduced, so that the scratch of the printed piece on the thermal transfer ribbon can be reduced.

The utility model relates to the technical field of contact line processing, in particular to a drawing device for rigid contact line production, which comprises a bottom plate and a drawing mechanism, conveying mechanisms are arranged on the front side and the rear side of the bottom plate, the drawing mechanism is positioned in the middle of the bottom plate and comprises a drawing component and a lifting component, and the lifting component is used for adjusting the height of the drawing component. A drawing die is arranged between the two clamping plates, a lubricating assembly is arranged between the guide wheel and the drawing die, and a cleaning assembly is arranged on the rear side of the drawing die. The drawing die has the beneficial effects that residual sweeps may adhere to the inner wall of the drawing die, and the sweeps on the inner wall of the drawing die are cleaned and brushed in all directions through the cleaning assembly, so that the sweeps adhering to the inner wall of the drawing die are reduced, frequent replacement of the drawing die is reduced, the influence of the residual sweeps on the drawing of the contact line is prevented, and the drawing quality of the contact line is improved. And the drawing quality of the contact wire is improved.

The invention discloses a clamping and walking device of a rail-mounted contact line abrasion detection robot, which realizes rapid, automatic and reliable installation and locking of the detection robot in a narrow tunnel space and on an n-shaped busbar, and abandons traditional heavy manual operation. The detection robot can automatically recognize and stably cross the pre-tightening bolts on the n-shaped busbar, uninterrupted continuous detection is achieved, blocking of fixed obstacles is overcome, clamping stagnation is not prone to occurring, and the applicability of the whole device is improved.

The utility model relates to a high-speed railway power supply contact line laying device which comprises a movable base, a traction device and an erecting device. The movable base is provided with a supporting seat, walking wheels and a first driving part. The traction device comprises a mounting frame, a cable tray, a rotating shaft, a second driving part and a tension monitoring system; the erecting device is composed of an elevator and an outgoing line guiding device. According to the device, accurate regulation and control of tension in the stringing process are achieved through the control device, the stability and consistency of wire laying are ensured, meanwhile, the device has the multi-stage braking function and the visual monitoring capacity, the construction efficiency and safety are effectively improved, the device adapts to complex working condition requirements, and the quality and reliability of high-speed railway contact wire laying are remarkably optimized.

The invention relates to a general type crimping terminal and an integral dropper of a contact network, which are applied to the integral dropper of the high-speed rail contact network, the crimping terminal is internally provided with a wire through hole through which a dropper wire used by the contact network can penetrate, one crimping terminal is connected with a first dropper wire clamp for clamping a carrier cable, and the other crimping terminal is connected with a second dropper wire clamp for clamping a carrier cable. The other crimping terminal is connected with a second dropper wire clamp for clamping the contact wire; and after the dropper wire passes through the wire through hole, the periphery of the crimping terminal is pressed to limit the displacement of the dropper wire. The crimping terminal of an integrally formed structure is adopted, the two ends of the dropper line are connected with the first current-carrying hole and the second current-carrying hole respectively after passing through the line passing holes, and compared with a connection mode that a current-carrying ring and the dropper line are separated in the prior art, the use reliability is improved; and a process of crimping the current-carrying ring is reduced, so that the integrity of the whole dropper can be ensured even if the crimping part is loosened.

A clamping assembly 10 (e.g., jumper clamping assembly for a catenary system) comprises a clamp 100 and a strain relief guide 200 (e.g., sleeve). The clamp comprises first and second clamping members

The utility model provides a polishing device for a contact line of a rigid contact net, which relates to the field of polishing of the contact line of the rigid contact net, and adopts the technical scheme that a polishing mechanism comprises a polishing motor and a polishing wheel, the polishing motor is arranged on a support plate I, and the support plate I is of an L-shaped structure; the first supporting plate is connected with a wing plate on the outer side of the moving seat through a first guide column, the first supporting plate and the first guide column can move relatively, a first follow-up spring is vertically arranged between the first supporting plate and the moving seat and arranged on the first guide column in a sleeving mode, and the upper end of the first guide column penetrates through the first supporting plate and is provided with a first limiting nut. A first straight hole groove is vertically formed in the corresponding position of the movable base, a motor shaft of the grinding motor extends into the first straight hole groove to be connected with a grinding wheel, and the axis of the grinding wheel is perpendicular to the advancing direction of the movable base. The polishing mechanism can float along with the change of the diameter of the contact line, and deformation caused by bearing of a large load is greatly avoided.

The invention relates to the technical field of automobile parts, in particular to a same-direction transmission line gear pair and a differential mechanism, which comprise a driving line gear and a driven line gear, contact lines of the driving line gear and the driven line gear are meshed according to a space conjugate curve, the driving line gear and the driven line gear have the same movement direction, and the driving line gear and the driven line gear are meshed according to a space conjugate curve. The contact lines of the driving line gear and the driven line gear are cylindrical spiral lines, and the spiral directions of the cylindrical spiral lines are the same. Linear gear transmission is adopted, external meshing and homodromous transmission can be achieved without adding an idle gear, the machining cost is reduced, the structure is compact, and assembling is convenient.

The invention relates to the technical field of metro rigid contact net wear prediction model construction, in particular to a metro rigid contact net wear prediction model construction method and system, and the method comprises the steps: carrying out a contact net wear mechanism test on a metro rigid pantograph net, and generating the wear volume of a contact line; constructing a contact line wear prediction model; screening out target parameters strongly related to the offline rate and the contact resistance, and establishing an offline rate function model and a contact resistance function model; and verifying the contact line wear prediction model substituted into the offline rate function model and the contact resistance function model according to the test acquisition data. According to the method, the function model of the key parameters, the offline rate and the contact resistance is established and verified by analyzing the test data, and is substituted into the contact line wear prediction model, and the offline rate and the contact resistance are converted into direct influence parameters, so that the influence rule of the subway operation parameters on the wear of the rigid contact network is intuitively reflected.

A miniature ice melting device for a high-voltage line comprises an ice melting body, a span string crossing part, an anchor section crossing part, a power source and power supply module, an electric energy obtaining module and a deicing driving module, and is used for obtaining electric energy from a contact line of a railway contact network through the electric energy obtaining module and providing the electric energy for ice melting work of the ice melting body. The deicing driving module and the power supply and power supply module are used for pushing the high-voltage line miniature ice melting device to advance on a contact network, the span string crossing is used for passing through a contact network dropper and a positioner, and the anchor section crossing is used for enabling the high-voltage line miniature ice melting device to smoothly pass through a contact network anchor section joint. The miniature ice melting device for the high-voltage line can continuously deice in a reciprocating manner for a long time in an electric split phase, and meanwhile, the anchor section can move to a catenary bracket led out from a non-working branch of the catenary in advance when a motor train unit or an electric locomotive passes through, so that the influence of deicing equipment on normal operation of the train is avoided, and the working efficiency is improved. The miniature ice melting device for the high-voltage line can save a large amount of manpower and material resources for deicing, and meanwhile, the miniature ice melting device for the high-voltage line can also be used for deicing on other high-voltage lines through simple transformation.

The invention belongs to the technical field of defect detection, particularly relates to a railway contact line defect detection method based on eddy current, and aims to solve the technical problem that the signal decomposition effect is unstable due to the fact that an existing method is difficult to adapt to dynamic changes of geometrical characteristics of a contact line in different sections. The detection method comprises the following steps: S1, generating a composite excitation signal; s2, mapping the response impedance signal and the background magnetic field distribution data to an instantaneous curved surface coordinate system to obtain time-space reference unified multi-modal sensing data; s3, extracting an extreme value of the local surface curvature as a third type of defect feature; and S4, constructing a probability graph model which takes the first, second and third defect features as input and takes defect types and severity levels as output. According to the method, the type and the grade of the defect are identified, the uncertainty of the diagnosis result can be quantitatively evaluated, and the accuracy, the robustness and the reliability of detection are improved.

The invention relates to the technical field of contact lines, in particular to a high-strength copper-magnesium alloy contact line for a high-speed railway and a preparation process of the high-strength copper-magnesium alloy contact line. The copper-magnesium alloy contact wire comprises Mg, Cu and P. Cathode copper and a magnesium ingot are adopted as raw materials, and the copper-magnesium alloy contact wire comprises the following chemical components in percentage by mass: 0.40-0.70% of Mg, less than or equal to 0.01% of P, other elements except Mg, P and Cu are classified as impurities, the total amount of the other elements is less than or equal to 0.10%, and the balance of Cu; the preparation process comprises the steps of material preparation, smelting, up-drawing continuous casting, preheating, continuous extrusion and multi-pass drawing, cathode copper is hung at a furnace opening of a crucible furnace to be baked before smelting, then the baked cathode copper is put into the crucible furnace in batches to be smelted, magnesium ingots are put into the crucible furnace after the cathode copper is smelted, stirring is conducted, and the crucible furnace is filled with compressed gas. The technical problems that in the prior art, a copper-magnesium alloy contact wire is high in production cost and cannot meet the tension requirement are effectively solved.

The present invention relates to a method for operating a current collector (10, 33), in which a positioning device (13, 56) moves a contact strip (14, 17, 27) relative to a contact wire and presses the contact strip against the contact wire using a pressing force to reach a sliding contact position, and a drive element (73) and / or a spring element (74) of the positioning device generate the pressing force on the contact strip. The current collector has a power supply unit (50) and a measurement unit (36, 43, 53, 58) having a measuring device (38, 44, 59), and at least two sensors (47, 48) of a sensor element (46) are provided, the power supply unit (50) generates at least the electrical energy required to power the sensor elements, each of the sensors outputs a measurement value, and a processing element (37, 49) processes the measurement value and correlates the measurement value with each other to determine a characteristic value representative of the operating state of the current collector and / or the contact wire. The present invention also relates to a current collector and a monitoring system.

The utility model discloses a multi-contact line-to-board connector, and belongs to the technical field of connectors. A multi-contact line-to-board connector comprises a plug and a socket which are matched with each other, and further comprises a pair of first conducting strips which are arranged in the socket, contact elastic pieces are fixedly arranged at one ends of the first conducting strips, a connecting groove is formed between the contact elastic pieces, a second conducting strip is arranged in the plug, and the outer walls of the top and the bottom of the second conducting strip abut against the contact elastic pieces; according to the utility model, the pair of first conducting strips with the contact elastic sheets are arranged in the socket, the connecting grooves with small openings and large interiors are formed between the contact elastic sheets, reliable connection between the second conducting strips and the first conducting strips can be ensured under the elastic action of the contact elastic sheets, and due to the elastic effect of the connecting grooves, the reliable connection between the second conducting strips and the first conducting strips can be ensured after multiple times of plugging. The compact effect between the second conducting strip and the connecting groove can still be kept, the situation of loosening or falling off is reduced, and the reliability and stability during use are guaranteed.

The invention relates to a power transmission line sub-conductor anti-adhesion isolation wire clamp capable of being installed in an electrified mode and a method, and belongs to the technical field of power transmission line operation and maintenance. According to the technical scheme, a light load-carrying unmanned aerial vehicle (22) lifts an isolation wire clamp (24) to fly to the position above a double-split sub-conductor, and two split sub-conductors (21) just enter an upper wire clamp and a lower wire clamp of the isolation wire clamp respectively; after the split sub-conductor is checked to enter the upper groove or the lower groove through a monitoring operation machine, the split sub-conductor is locked in the upper groove and the lower groove; the installation device is separated from the isolation wire clamp, and the installation device is brought back by the light load-carrying unmanned aerial vehicle for repeated use. The unmanned aerial vehicle is used as a carrier, the anti-adhesion isolation wire clamp and the installation device are matched, wire contact and high-altitude operation are not needed, the safety is high, the number of operators is small, and the operation cost is low; defects of adhesion and whipping of split sub-conductors of the power transmission line can be eliminated, damage to equipment caused by adhesion and whipping can be avoided, and the safety level of operation of the power transmission line is greatly improved.

The invention discloses an automatic online and offline device for a contact line crawling robot, and relates to the technical field of contact lines, the automatic online and offline device comprises a contact line body, a crawling robot body is arranged on one side of the contact line body, and a sliding rod assembly is arranged between the contact line body and the crawling robot body; a sliding seat is arranged at the bottom of the crawling robot body, a connecting seat is fixedly connected to the top of the sliding seat, the top of the connecting seat is fixedly connected with the bottom of the crawling robot body, the sliding rod assembly comprises a hook, the hook is slidably connected to the contact line body, and a first hinge is hinged to the bottom of the hook. The contact line crawling robot can be automatically loaded and unloaded, the automation degree of a whole set of products is improved, the whole set of operation process can be completed through single-person operation, and the purposes of accurate positioning, stable operation and safe operation in the loading and unloading process of the robot are achieved. Convenience of operation in the on-line and off-line process of the machine is improved, and the labor intensity of operation personnel is reduced.

This invention discloses a transition component for a rail transit turnout busbar and a contact wire clamping device. The transition component includes a body bent along its length, with a clamping plate at its lower edge capable of clamping the contact wire. The structure of the contact wire clamping device using this transition component includes a pair of transition components, each bent along its length, and an anchoring plate connected to a positioning device. The pair of transition components is fixed to the anchoring plate in an X-shape. Busbars are provided at both ends of each transition component, and clamping plates at the lower edge of each transition component are capable of clamping the contact wire. Using a transition component instead of a busbar avoids the problem of excessively large bending angles in busbars, which are difficult to process. The device has an integrated hyperbolic structure, reducing the amount of positioning suspension parts and the central anchoring device required. The integrated structure ensures that the two contact wires are at the same height.

The utility model discloses an antiskid device and gateway equipment, and relates to the technical field of communication equipment. The device comprises a cover plate, a magnetic column, a reset spring and a coil. The cover plate is fixedly connected with an anti-skid base of the electronic equipment, one end of the magnetic column penetrates through the anti-skid base, and the magnetic column is movably connected with the anti-skid base. The reset spring is arranged on the magnetic column in a sleeving mode and located between the magnetic column and the anti-skid base, and when the reset spring is in a compressed state, the other end abutting against the magnetic column is in surface contact with the cover plate. The coil is fixed on an equipment bottom shell of the electronic equipment, and the coil is electrified to generate a magnetic field to attract the magnetic column, so that the antiskid base and the equipment bottom shell are fixedly connected. Therefore, the coil is electrified to adsorb the magnetic column, the connection firmness between the anti-skid base and the equipment bottom shell is ensured, and the equipment main body of the electronic equipment is prevented from sliding off from the anti-skid base to be damaged.

The utility model discloses a contact type wire temperature measuring device and a temperature measuring system, the contact type wire temperature measuring device is installed on a preset wire and comprises a solar charging housing, and a lithium battery, a charging and discharging management module, a temperature sensing probe and a Lora module which are arranged in an inner cavity of the solar charging housing; wherein the solar charging shell and the lithium battery form a dual-power-supply system, and the dual-power-supply system is controlled by the charging management module; the temperature sensing probe is used for measuring the temperature of the wire; and the Lora module is used for transmitting the temperature measurement data acquired by the temperature sensing probe to a preset host. The technical scheme provided by the utility model can resist electromagnetic interference so as to provide a stable and reliable communication line and cope with a complex electromagnetic environment of a power transmission line; reference is provided for operation and maintenance personnel to know the actual on-site operation condition through remote sensing, the operation and maintenance work efficiency is improved, and the operation and maintenance cost is reduced.

The invention belongs to the technical field of flow measurement, and mainly relates to a gas Roots flowmeter which comprises a shell with a metering chamber, two waist wheels meshed with each other are rotationally assembled in the metering chamber, and the two waist wheels synchronously and reversely rotate. Each section, perpendicular to the rotating axis of the corresponding waist wheel, of each waist wheel is provided with two end points deviating from the rotating axis, the multiple end points on the same side form an end line, the end lines are spirally arranged around the rotating axis, and the spiral directions of the end lines on the two waist wheels are opposite. When the two waist wheels are meshed, the contact line of the two waist wheels is inclined, the waist wheels gradually enter and are gradually separated from the meshing, the meshing process is a progressive process, and the stress on the two waist wheels is gradually increased and then gradually decreased, so that the impact and vibration in the meshing process are reduced, and the noise is reduced.