443 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 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 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 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 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 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 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 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 application discloses a rigid contact net self-adaptive polishing control method and system, belongs to the technical field of track traffic power supply equipment maintenance, obtains the pantograph-catenary action historical data of each position along the busbar direction of the contact net, and constructs a contact wire damage index distribution curve; based on the damage index, a high damage interval is identified, roughness, corrugation amplitude and oxidation thickness parameters are extracted, a damage intensity vector is constructed, and a fuzzy comprehensive evaluation method is used to calculate the damage level score of each position; according to the scoring results, a preset polishing strategy library is matched, corresponding polishing wheel combinations, rotating speeds and contact pressures are determined, and a control parameter set is generated; the polishing device dynamically adjusts the working state according to the control parameters in the running process, and the method realizes the whole-process self-adaptive closed-loop control of state recognition, strategy decision, execution control and quality feedback of the contact wire polishing operation.

This invention discloses a method for detecting abnormal states of railway contact wire bolts, comprising: S1, acquiring contact wire bolt state monitoring images and performing cropping preprocessing to obtain image blocks; S2, detecting the preprocessed image blocks to obtain bolt targets; S3, classifying the bolt targets in the image blocks output in step S2 using a classification network to obtain the bolt target state; This invention can quickly and accurately detect abnormal states of bolts, improve the average detection rate of bolt positioning and the average identification accuracy of bolt defects, and reduce manual labor intensity.

The application discloses a contact line abrasion measurement method of an intelligent contact network inspection robot, and relates to the technical field of flexible contact network abrasion measurement. The method comprises the following steps: S1, collecting original point cloud data of the flexible contact network; S2, using a circular arc search method based on noise suppression to extract a contact line point cloud profile in the original point cloud data of the flexible contact network; S3, performing profile matching on the contact line point cloud profile and a corresponding contact line standard point cloud profile in a discrete template library; wherein the discrete template library comprises contact line standard point cloud profiles of different specifications, and the contact line comprises standard circular contact lines and non-standard circular contact lines; and S4, measuring the contact line abrasion by using the contact line point cloud profile after profile matching and the contact line standard point cloud profile. The method can continuously detect the change of the wire abrasion, instead of only measuring at specific points, which is helpful for comprehensively understanding the state of the wire.

The utility model discloses a tunnel contact network suspension arm which comprises a vertical rod, three fixing sleeve pieces are arranged on the outer surface of the vertical rod in a sleeved mode, damping structures are arranged on the outer surfaces of the two fixing sleeve pieces at the bottom, and a first supporting rod and a second supporting rod are arranged on the sides, away from the vertical rod, of the two damping structures. The damping structure comprises an oblique angle hinge frame, a connecting block is fixedly installed on one side of the oblique angle hinge frame, a damping spring sleeve piece is fixedly installed on one side of the connecting block, and the first supporting rod is connected with the side, away from the connecting block, of the damping spring sleeve piece. One end of the second supporting rod is connected with the side, away from the connecting block, of the other damping spring kit. According to the tunnel overhead line system suspension arm, the first supporting rod and the second supporting rod on the fixing sleeve piece are connected and supported through the damping spring sleeve piece, the connecting block and the bevel angle hinge frame, so that the stability of the suspension arm and the effect of protecting an overhead line system wire on the suspension arm through flexibility provided by the damping spring sleeve piece are achieved.

This utility model discloses a linkage-limiting contact network compensation pulley system, which includes a fixed pulley system, a movable pulley system, a compensation rope, and a wedge-shaped clamp. Its innovation lies in the symmetrical connection of two sets of foldable steel belt mechanisms between the pulley shafts of the fixed-side linkage wheel of the fixed pulley system and the movable-side linkage wheel of the movable pulley system. These mechanisms consist of long and short connecting plates hinged together by connecting plate rivets and connected into a rigid frame by a spacer bolt assembly. This achieves forced synchronous deflection between the fixed and movable pulley systems, effectively preventing the compensation rope from jumping out of its groove and from wearing. By setting backstop blocks on the fixed plates of the fixed and movable pulleys, which cooperate with the foldable steel belt mechanisms, mechanical hard limits are formed at the extension and folding limit positions, effectively preventing overtravel. Its high structural integration significantly improves the safety of the compensation system operation.

The invention discloses an external non-contact linear position sensor, a detection method and a piston cylinder, and belongs to the technical field of position sensors. The sensor comprises a permanent magnet and a Hall sensor array. The permanent magnet is fixed on the linear moving part and moves along with the linear moving part; the Hall sensor array is fixed on the fixed base body and is linearly arranged along a moving path to form a continuous magnetic field induction interval. The interval is used for sensing the magnetic field change of the permanent magnet and outputting a signal to represent the position of the linear moving part. The detection method comprises the steps of collecting array signals in parallel, performing filtering and calibration compensation, positioning a signal peak channel, and calculating the accurate center position of the permanent magnet through an interpolation algorithm based on a peak value and an adjacent channel signal. The piston cylinder is equipped with the sensor. According to the non-contact magnetic induction principle, the problems that an existing sensor is difficult to install and maintain, prone to abrasion, high in cost and the like are solved, and the sensor has the advantages of being simple in structure, long in service life, high in reliability and easy to standardize and reform.

The invention discloses a contact network positioning wire clamp coupling experiment device and an experiment method, relates to the technical field of contact network testing, and solves the technical problem that the actual clamping state of a positioning wire clamp cannot be well simulated due to the fact that the performance research of an existing positioning wire clamp mostly focuses on static mechanical properties or corrosion behaviors in a single environment. The device comprises a positioning wire clamp; two contact line fixing bases are arranged on the positioning substrate, and the two ends of the contact line are connected with the two contact line fixing bases respectively; the lower end of the upper clamping rod is connected with the upper end of the positioning wire clamp, and the upper end of the upper clamping rod is connected with a fatigue testing machine; the upper end of the lower clamping rod is detachably connected with the positioning base plate, and the lower end of the lower clamping rod is connected with a fatigue testing machine; the horizontal load applying module is arranged on the positioning substrate and is connected with the positioning wire clamp; the device has the advantages of being capable of accurately simulating the actual mechanical state of the positioning wire clamp and the like.

The utility model discloses an urban rail transit dropper adjusting device which comprises a double-carrier-cable clamping ring, the lower portion of the double-carrier-cable clamping ring is connected with an eyebolt, the eyebolt is detachably connected with one end of a bidirectional adjusting bolt, the other end of the bidirectional adjusting bolt is detachably connected with one end of a first adjusting chain, and the other end of the first adjusting chain is detachably connected with the other end of a second adjusting chain. The first adjusting chain is also detachably connected with the second adjusting chain; the tail end of the second adjusting chain is provided with a double contact wire clamping ring. According to the utility model, the dropper is subjected to force unloading through the arrangement of the adjusting chain, and a traditional operation method that a contact line is continuously lifted by manpower is replaced; the height of the dropper is adjusted by adjusting the position, hung on the first adjusting chain, of the second adjusting chain, the height of the contact line and the height of the carrier cable are accurately adjusted through the two-way adjusting bolt, and accurate adjustment of the carrier cable and the contact line is guaranteed.

This invention provides a constant power heating cable for rail transit. The constant power heating cable for rail transit includes: a cable body; a conductor core located at the innermost layer of the cable body; an inner insulation layer disposed on the outer surface of the conductor core; a heat insulation buffer layer disposed on the outer surface of the inner insulation layer; and a heating element disposed on the outer surface of the heat insulation buffer layer. The constant power heating cable for rail transit provided by this invention can flexibly adjust the heating mode of the heating element through a power supply control device according to the heating requirements of different parts of rail transit such as turnouts, contact wires, and signal cables, without the need for additional heating equipment. It adapts to complex working conditions, resulting in more reasonable energy consumption. The heating element can switch working modes as needed, avoiding ineffective energy consumption. While ensuring anti-freezing and anti-condensation effects and uniform heating, it significantly reduces energy consumption compared to traditional single-heating-core structures, achieving the dual benefits of energy saving and practicality.

The invention relates to the field of railway construction, and provides a railway contact network bearing wire replacement construction method which comprises the following steps: S1, preparing construction before wire replacement; s11, breaking and dismantling the existing crimping type electric connecting wire clamp, and replacing the existing crimping type electric connecting wire clamp with a bolt type electric connecting wire clamp; s12, the old elastic crane is temporarily dismantled; s13, parameters of the existing anchor section and elastic hoisting tension are comprehensively measured; s14, the anchor section parameters are divided into 30 sections of anchor section supporting column parameters, and the 30 sections of anchor section supporting columns are anchor section supporting columns from the first anchor section supporting column to the third anchor section supporting column; s15, operation vehicle marshalling: marshalling constant tension vehicles according to construction requirements; s16, making a working vehicle operation plan, and moving the working vehicle to a specified anchor section support column according to a No.30 anchor section support column; s2, line changing construction is carried out; S21, a carrier cable is replaced; s22, replacing a contact line; s3, fine adjustment construction; s31, the catenary is finely adjusted; and S4, performing dynamic inspection to recover the normal speed. The method has the effects of formulating the path of the anchor section strut and the operation vehicle and ensuring the operation stability.