320 results about "Contact line" patented technology

The invention discloses a self-adaptive grinding control method and system for a rigid contact network, and belongs to the technical field of maintenance of rail transit power supply equipment. The method comprises the following steps: acquiring pantograph-catenary action historical data of each position of the contact network along a busbar direction, and constructing a contact line damage index distribution curve; identifying a high damage interval based on the damage index, extracting roughness, ripple amplitude and oxidation thickness parameters, constructing a damage intensity vector, and calculating a damage grade score of each position by adopting a fuzzy comprehensive evaluation method; a preset polishing strategy library is matched according to the scoring result, a corresponding polishing wheel combination, the rotating speed and the contact pressure are determined, and a control parameter set is generated; the grinding device dynamically adjusts the working state according to the control parameters in the advancing process. The method achieves full-process self-adaptive closed-loop control of state recognition, strategy decision, execution control and quality feedback of contact line grinding operation.

The utility model relates to the technical field of contact line detection, aims to solve the technical problems that in the existing contact line abrasion detection, manual operation has potential safety hazards, the high efficiency is low, and an automatic detection device cannot accurately recognize obstacles, and particularly relates to an obstacle-avoiding line climbing robot which comprises a contact line arranged at the top of a power generation device. The top of the contact line is provided with a plurality of guide wheel mechanisms used for moving on the contact line and avoiding obstacles, and the bottom of each guide wheel mechanism is provided with a base plate. The top of the base plate is provided with a plurality of detection parts used for detecting obstacles on the contact line, a power part used for clamping the contact line together with the guide wheel mechanism, and an abrasion detector used for detecting the abrasion loss of the contact line. The line-climbing robot can quickly complete line-climbing movement and obstacle avoidance work, the obstacle avoidance success rate of the line-climbing robot is increased, the working efficiency of robot detection is improved, and the robot is prevented from being damaged due to collision with the obstacle.

The invention provides a catenary height adjustment method and system, and relates to the technical field of catenary height adjustment, and the method comprises the steps: obtaining the on-site measurement data of the height of a conductor in the span of a catenary; establishing a statics model of the elastic chain type suspension based on a parabola unit hypothesis; calculating the dropper force of each dropper according to the measurement data and the stress balance principle of the parabola unit; the vertical displacement of each node of the carrier cable is solved through a moment balance equation, and then the space coordinates of the carrier cable are obtained; calculating the theoretical length of each dropper according to the coordinates of the carrier cable, the design height of the contact line and the dropper force; and comparing the theoretical length with the dropper length in a standard state to generate a dropper length adjustment strategy. The method provided by the invention not only can realize measurement bottleneck breakthrough, but also can be suitable for complex suspension conditions, and in addition, can also ensure the performability of an adjustment strategy, output a quantified dropper shortening amount and guide accurate construction.

The invention relates to the technical field of resistance spot welding, in particular to a cement telegraph pole reinforcement cage automatic binding and welding integrated device based on PLC control. The device comprises a working rotating disc rotationally connected with a mounting support, a machining channel allowing the reinforcement cage to horizontally penetrate through is formed in the center of the working rotating disc, a conductive wheel and a pressing assembly are arranged on the same side of the working rotating disc, and the conductive wheel, the pressing assembly and the reinforcement cage form a closed conductive loop. When the diameter of the produced reinforcement cage is small, the axial component force applied to the spiral bar by the cylindrical pressing wheel is guided by the inclined plane of the groove, and forced friction is reduced. When the diameter of a produced reinforcement cage is large and the reset slope of the circular truncated cone pressing wheel presses a spiral bar, the acting direction of force is more deviated to the radial direction, the axial component force is reduced, and therefore the axial friction force is reduced. When the reset slope on the periphery of the round table roll welding wheel is in contact with the spiral rib, an inclined contact line along the conical surface is formed.

The invention relates to a load-bearing seatbelt retractor for a seat structure of a vehicle seat, the seatbelt retractor having two housing halves between which functional modules of the seatbelt retractor are disposed. One functional module is a belt reel having a winding axis. The two housing halves form two mutually parallel receptacles in the seatbelt retractor, which are oriented perpendicular to the winding axis. Two seat bars can be inserted into the receptacles. The two housing halves are in contact at least on two contact lines above and below the functional modules with respect to an insertion direction of the receptacles. The lower contact line splits open on both sides along the winding axis such that respective intermediate spaces open toward the receptacles are formed.

The invention relates to a light-weight type planetary line gear reducer which comprises a sun gear, a planetary gear, an inner gear ring and a planetary carrier which are all light-weight type line gears, the sun gear is located in the center of the inner gear ring, the sun gear and the planetary carrier are both coaxially and rotationally installed on the inner gear ring, and the planetary gear is installed on the planetary carrier in a heteroaxial rotation mode and can rotate around the axis of the planetary gear. And the tooth surface normal of any contact point of the planet gear is collinear with the tooth surface normal of the corresponding contact point of the sun gear and the inner gear ring at the same time, the contact line is a cylindrical spiral line, and the transmission ratio and the spiral radius are decoupled. Through the space curve meshing theory, the reduction ratio exceeding 30 can be achieved through a single stage, the stage number of the planetary reducer is reduced, the force flow transmission path is remarkably shortened, the overall weight is reduced, and meanwhile the bearing capacity and reliability are improved; the technical problems that in the prior art, when the large reduction ratio is achieved, the multi-stage series connection structure is complex, the weight is increased, the transmission and positioning precision is reduced, and the load dispersing capacity is limited are systematically solved.

The present application belongs to the technical field of gear machining, and discloses a forming milling machining method of spherical gear. The method uses a disc-shaped milling cutter to machine the spherical gear, and the steps are as follows: firstly, the parameters of the spherical gear are given, the tooth surface equation of the spherical gear is derived, and the tooth surface normal vector is calculated; secondly, the forming milling machining coordinate system of the spherical gear is established, and the homogeneous transformation matrix between the coordinate systems is derived, and then the contact line equation between the spherical gear and the disc-shaped milling cutter is derived; then, the cross-sectional profile of the disc-shaped milling cutter is calculated, and then the rotary surface of the disc-shaped milling cutter is obtained; finally, the spherical gear is formed and milled by using the calculated disc-shaped milling cutter, and after machining an annular gear slot, the disc-shaped milling cutter is rotated by a certain angle to continue machining the next gear slot. The forming milling machining method of the spherical gear proposed by the present application can realize the machining of the spherical gear without relying on special gear machining machine tools, and the disc-shaped milling cutter used has a simple structure and is easy to manufacture.

A spectacle lens design includes an aperture and at least two ring-shaped focusing structures surrounding the aperture. The aperture has a dioptric power, and the ring-shaped focusing structures surrounding the aperture provide an additional power relative to the dioptric power of the aperture. A ring-shaped diffuser is arranged between neighboring ring-shaped focusing structures. Neighboring ring-shaped focusing structures can adjoin each other with a ring-shaped contact line between them forming the ring-shaped diffuser. Neighboring ring-shaped focusing structures can also be arranged at a distance to each other and at least one of the ring-shaped focusing structures provides a ring shaped focal line. Neighboring ring-shaped focusing structures can also be arranged at a distance to each other and at least one of the ring-shaped focusing structures consists of lenslets that adjoin each other so as to form a ring of lenslets and provides a plurality of foci along a ring shaped line.

The invention discloses a slow-start pneumatic switch valve device for trichlorosilane feeding, and belongs to the technical field of material preparation process valves. Comprising a switch valve and a pneumatic actuator, linear motion of a piston rod is converted into rotation fine adjustment through a swing arm rotation compensation mechanism, a solid / microgroove sealing ring and a sliding cavity wall are always kept on a theoretical contact line, abrasion microgaps are automatically compensated, zero-clearance sliding in the whole life cycle is achieved, and manual clearance adjustment is avoided; the solid sealing ring adopts surface-surface contact, so that the unit pressure is reduced by more than 50%, and the wear rate is obviously reduced; the omega-shaped groove of the microgroove sealing ring converts solid particles (10-50 microns Si) into groove edge elastic sealing, and the wear rate is reduced by 40% again; a sealing surface is provided with a uniform oil film, the dynamic and static friction coefficient difference is reduced, crawling / jumping in a 0-20% opening low-speed stage is eliminated, true slow starting is achieved, the water hammer effect during trichlorosilane feeding is avoided, the sealing surface is provided with the uniform oil film, the dynamic and static friction coefficient difference is reduced, and crawling / jumping in the 0-20% opening low-speed stage is eliminated.

The invention relates to the technical field of mechanical manufacturing and machining, in particular to a dressing wheel and honing wheel design method for improving contact line stability in the gear honing machining process. Based on workpiece gear parameters, a left and right tooth surface mathematical model is established, a honing process space coordinate conversion relation is established, a conjugate meshing relational expression is derived by combining the relative slip speed of meshing contact points and a normal vector, and a tooth surface contact line model is established; and the calculation modeling of the two-dimensional projection of the left and right tooth surface contact lines, the projection intersection point position and the variation under the same rotation angle is realized. And a honing wheel dressing contact line model under dressing wheels with different tooth numbers and a tooth surface contact line intersection projection model in the dressing and honing process under the tooth number difference are established. A honing wheel and variable tooth number dressing wheel design method is provided, and geometric and technological parameters of the honing wheel and the variable tooth number dressing wheel are determined; and a trimming and honing two-degree-of-freedom conjugate meshing relation and a modified tooth surface numerical model are constructed and verified, discretization and point cloud processing are conducted on the model, high-precision tooth surface point cloud is obtained, and accurate machining of a trimming wheel and a honing wheel is guided.

According to an aspect, there is provided a mounting assembly (20) for a hair cutting appliance (10), the mounting assembly comprising: a head (22) configured to receive a cutting unit and comprising: a body (24) extending along an elongate axis (50): a driving bridge (26) configured to couple to the cutting unit and to reciprocally move relative to the body along the elongate axis to reciprocally move the cutting unit relative to the body; a primary head bearing surface (44); and a separate secondary head bearing surface (52); a counterpart (40) pivotably coupled to the head. the counterpart comprising: a primary counterpart bearing surface (46) configured to cooperate with the primary head bearing surface to permit sliding rotation of the counterpart relative to the head about a first rotational axis (60) which is parallel to the elongate axis, and configured to contact the primary head bearing surface along a contact line to limit movement of the head towards the counterpart along a second axis (30) perpendicular to the first rotational axis; and a secondary counterpart bearing surface (54) separate from the primary counterpart bearing surface and configured to cooperate with the secondary head bearing surface to permit sliding rotation of the counterpart relative to the head about the first rotational axis, and configured to bear against the secondary head bearing surface to limit movement of the head relative to the counterpart along a third axis (70) which is perpendicular to the second axis and the first rotational axis; and a driving unit (34) comprising a driving axle (36) and a socket (38), the driving axle comprising an eccentric pin (42) cooperating with the driving bridge to impart reciprocating motion to the driving bridge, and the socket being configured to cooperate with a motor (14).

The utility model relates to the technical field of deviation rectification, and discloses a coal conveyor carrier roller belt deviation rectification structure which comprises a cross beam, a middle section roller is arranged on the cross beam, side rollers inclining forwards are arranged on the two sides of the middle section roller, the side rollers are installed on a side roller frame, and the side roller frame is rotationally connected with the cross beam. The side rollers are conical, the large ends of the side rollers are close to the two ends of the middle-section roller, and the two side rollers can rotate synchronously. The positions of the mounting clamping grooves of the side rollers are changed, and the side rollers have certain forward inclination angles after entering the grooves, so that contact lines of the three sections of roller bodies and a belt are changed into broken lines, an automatic deviation rectifying function is achieved, a conveying belt is prevented from running off-tracking, scattered materials are reduced, abrasion and tearing of the conveying belt are avoided, and the service life of the conveying belt is prolonged; the conical carrier rollers are used in a matched mode, and the deviation rectifying effect is achieved; the roller sleeve is made of a low-friction material, so that friction, energy loss and equipment operation energy consumption can be reduced, and the requirement of environmental protection is met.

This invention provides a static parameter measurement device for overhead contact lines based on an unmanned aerial vehicle (UAV) platform, belonging to the field of railway overhead contact line inspection technology. It includes a UAV body with a laser measuring device mounted on its top and a telescopic support mounted on its side. The UAV body includes a processor chip, and the laser measuring device is connected to the processor chip. After takeoff, the telescopic support secures the UAV, and the laser measuring device measures the overhead contact line. The measured data is transmitted in real time to the processor chip for processing and analysis, ultimately achieving high-precision measurement of the static parameters of the overhead contact line. By linking the top-mounted laser measuring device with the processor chip, it is possible to conduct inspections and parameter measurements on conventional railway lines outside of designated maintenance windows, achieving high-precision, non-contact distance or terrain measurement, suitable for complex environments, and significantly improving data acquisition efficiency.

The invention provides a rigid contact line reinforcing method, which comprises the following steps of: S101, detecting a contact line on a busbar to be detected, and confirming an abrasion area of the abraded contact line on the busbar; s102, reinforcing modules are installed on the two sides of the busbar; s103, reinforcing contact lines are fixed on the two sides of the busbar in a mirror image mode through a reinforcing module, and then the reinforcing contact lines are adjusted to be parallel to the abrasion contact lines; when the train runs, the top of the carbon sliding plate slides from the unworn position on the wear contact line to the reinforcing contact line and then slides to the unworn position on the wear contact line so as to avoid the wear area of the wear contact line. The problem that manpower and material resources are seriously consumed when an abraded contact line is integrally replaced is solved, and the operation convenience and efficiency of remedying the abraded contact line are improved.

This utility model relates to an auxiliary device for manual overhead contact line laying, comprising a flatbed cart, a laying frame mounted on the flatbed cart, and a wire reel detachably mounted on the laying frame. The laying frame includes two symmetrically arranged support frames, each with a height-adjustable support plate via an adjustment mechanism. A lifting plate is mounted above the support plates via a lifting mechanism, and the outer end of the support shaft of the wire reel is mounted on the lifting plate. This auxiliary device for manual overhead contact line laying consists of a flatbed cart and two detachably mounted support frames on its top left and right sides. It has a simple structure, is convenient and flexible to use, and assists manual laying operations. In the replacement of conductors on existing overhead contact lines, workers can wait at the construction site in advance, and upon the issuance of the track maintenance window command, manually lift the reel onto the railway track for laying operations, greatly reducing machinery costs and improving construction efficiency.

The utility model discloses a spiral compression spring which comprises supporting rings at the two ends and a spring body located between the two supporting rings, the spring body and the supporting rings are sequentially and spirally wound in a directional mode to form a cylindrical shape, and the two end rings of the spiral compression spring are tightly combined and ground to be flat or are tightly combined and ground to be flat after being flattened. A gap is formed between every two rings of the spring body, and a contact line compensation ring is additionally arranged on the supporting ring; the contact line compensation ring and the supporting ring are integrally formed, and the contact line compensation ring extends by a certain length from the contact point of the supporting ring and the spring body to the tail tip direction along the spiral line of the supporting ring. According to the utility model, the contact line of the cylindrical helical compression spring can be independently compensated, the length of the contact line meeting the standard requirement can be obtained without loading or loading a very small axial load, the properties such as the total number of turns, the number of effective turns, the free height, the compression height and the reserved safety stroke are not changed, the stability and the bearing capacity are improved, and the production cost is reduced. The service life is prolonged.

The utility model provides an overhead line system composite material cantilever device insulation connector comprising a first insulation double-lug assembly, a second insulation double-lug assembly detachably connected with the first insulation double-lug assembly, and a first locking assembly for locking the first insulation double-lug assembly and the second insulation double-lug assembly. A gap for insertion of a cantilever is formed between the first insulating double-lug assembly and the second insulating double-lug assembly, the second insulating double-lug assembly is provided with a matching through groove, and the inner wall of the matching through groove is provided with a matching through hole; the second locking assembly and the third locking assembly are arranged on the cantilever connecting pin shaft. By adopting the structure, the cantilever connecting pin shaft is fixed by adopting a double-locking structure. Connection is simpler, the angle is freer, and the weight is lighter. The risk of partial discharge of the composite material cantilever device of the overhead line system can be avoided, and the power supply safety and reliability of the overhead line system of the electrified railway are improved.

The application relates to the technical field of automation, in particular to an automatic maintenance method, device, equipment and medium for a railway overhead line system cantilever, wherein the method comprises the following steps: mechanism modeling is performed on the railway overhead line system cantilever to generate a multi-link mechanism composed of multiple links and hinge nodes; actual coordinates and set coordinates of a positioning target point of a contact line at the end of the cantilever in the multi-link mechanism are identified, and a deviation value is calculated according to the set coordinates and the actual coordinates; the node is adjusted in a specific order according to the deviation value until the deviation value of the actual coordinates and the set coordinates of the positioning target point is lower than a preset threshold value, an automatic maintenance path is generated, and a robot is controlled to maintain the railway overhead line system cantilever according to the automatic maintenance path. Therefore, the problems that in the related art, the cantilever maintenance is completed by manual operation, the adjustment operation needs to be repeatedly performed multiple times in the maintenance process, the work efficiency is low, and manpower, material resources and time are wasted are solved.

The utility model discloses an auxiliary mounting device for a T-shaped positioner, which belongs to the technical field of auxiliary mounting tools for positioners and comprises a fixing box and two positioning boxes fixed on one side of the fixing box and used for mounting the T-shaped positioner. Two push rods extending into the positioning box are fixed to one side of the guide plate, a fixing column is fixed in the positioning box, two connecting blocks are movably connected to the outer portion of the fixing column, a fixing block used for clamping a contact line is fixed to one side of each connecting block, and a fixing frame is fixed to the surface of the fixing box. The surface of the fixing frame is provided with a fixing hole used for placing a wire clamp linking ring, the outer walls of the two sides of the fixing frame are both provided with through holes, and the two through holes of the fixing frame are both internally and movably connected with fixing pins used for fixing the wire clamp linking ring. The T-shaped positioner installation auxiliary device is time-saving and labor-saving in use, and can accurately complete installation work.

This invention discloses an emergency start test method for Fuxing high-speed trains, comprising the following steps: confirming before the test that the overhead contact line has been de-energized and the train is in a battery disconnected state; preparing the connection fixtures for the test; confirming that the auxiliary air compressor, pantograph, and vacuum circuit breaker are functioning normally; using testing software to confirm that the converter is functioning normally; and restoring the test structure to its original state. This invention enables the completion of an emergency start test of the train under conditions of no power to the overhead contact line and no high voltage supply to the train, avoiding the risk of high voltage grounding, improving work efficiency, fundamentally eliminating the risk of overhead contact line grounding and overcurrent melting caused by EGS misoperation, and improving work safety.

According to the portable rigid contact line disengagement processing device, the top of a hydraulic device is connected with a pressing rod connecting rod, an external thread at the bottom of the hydraulic device is connected with an internal thread formed in the center of a transverse support, and the top ends of two swing arm pull rods are installed at the two ends of the bottom of the transverse support; claw type buckles matched with the two sides of the bottom of the busbar are arranged at the bottom ends of the two swing arm pull rods, the top of the busbar makes contact with the bottom of the hydraulic device, and a contact line is clamped in the middle of the bottom of the busbar; the two sides of the bottom of the busbar are tightly attached to the claw-type buckles, the hydraulic device is adjusted to the proper position, the busbar is separated from the contact line toggle clip through vertical pressing of the pressing rod connecting rod, transverse supporting and pulling force generated by the swing arm pull rods on the two sides, internal calcification is processed, the contact line is placed again, and the force unloading knob is rotated to unload the hydraulic device. The busbar automatically returns to the original position, and the contact line is clamped again, so that the contact line at the groove separation position returns to the correct position; the utility model has the advantages of reduced labor intensity, convenient operation, strong practicability and the like.

The invention discloses a multi-axis linkage metal polishing path intelligent planning dynamic correction method and system, and relates to the technical field of polishing path intelligent planning, and the method comprises the steps: determining a plurality of initial cutter contact lines based on a D-P algorithm, and determining corresponding polishing process parameters and curvature radiuses through the data analysis of each cutter contact point on each initial cutter contact line; dividing region types and respectively calculating a proportion parameter and an effective radius; then determining the specific number of the cutter contact line segments by analyzing the proportion parameter and the effective radius of each local cutter contact line segment, and optimizing a final cutter contact line set by combining with the effective coverage area; and finally, on the basis of the final cutter contact line set, determining a cutter contact point set and an initial line spacing, calculating an actual offset distance by utilizing an eccentric compensation coefficient, generating a polishing cutter location point, and generating a smooth polishing path through a fitting algorithm, so that not only can the precise positioning of local cutter contact line segments be realized, but also the polishing precision is improved. And dynamic correction in the multi-axis linkage metal polishing process is achieved, and the polishing efficiency is optimized.

An overhead line system short circuit test system comprises a short circuit connecting line, an installation device and an electric control device. The two ends of the short-circuit connecting line are connected with a contact line connecting mechanism used for being connected with a contact line and a rail connecting mechanism used for being connected with a rail respectively, the contact line connecting mechanism comprises a U-shaped line clamp and an insulation pressing block used for pressing the contact line on the inner side of the line clamp, and the insulation pressing block is connected with a power cylinder used for driving the insulation pressing block to move. The rail connecting mechanism comprises a clamping jaw used for clamping a rail, and the wire clamp and the clamping jaw are electrically connected with the short-circuit connecting wire. The installation device comprises a rail car used for transporting the short-circuit connecting line, and the rail car is provided with a lifting machine used for driving the contact line connecting mechanism to move and a medium supply mechanism used for providing a power medium for the power cylinder. The electric control device is used for supplying power to the test loop and monitoring electrical parameters. In the whole installation process of the short-circuit connecting line, a worker does not need to climb a line pole and a cantilever, the installation efficiency can be greatly improved, and danger is also avoided.

The invention provides a system and method for removing an ice layer on the surface of a high-speed rail contact line based on composite laser, and relates to the technical field of laser deicing, and the system comprises an online detection unit which is used for obtaining thickness data and type information of the ice layer on the surface of the contact line in a contact line icing area when it is detected that the contact line is iced; the infrared positioning unit is used for determining three-dimensional positioning data of an icing area of the contact line and monitoring temperature information of the icing and the contact line in real time; the intelligent control unit is used for regulating and controlling working parameters of the composite laser deicing unit according to the thickness data, the type information, the positioning data and the temperature information; and the composite laser deicing unit is used for determining a laser output mode according to the working parameters so as to realize deicing operation. The problems that in a traditional high-speed rail contact line deicing mode, manual deicing is low in efficiency and high in safety risk, a contact net is prone to being damaged by mechanical deicing, electric heating deicing is high in energy consumption and poor in adaptability, and single laser deicing is insufficient in efficiency and accuracy can be solved in a targeted mode.

According to one aspect, a mounting assembly (20) for a hair cutting instrument (10) is provided, the mounting assembly comprising: a head (22) configured to receive a cutting unit, and including: a body (24) extending along an elongation axis (50); a drive axle (26) configured to be coupled to the cutting unit and reciprocating relative to the body along the elongation axis to reciprocate the cutting unit relative to the body; a primary head support surface (44); and a separate secondary head support surface (52); a mating member (40) pivotally coupled to the head, the mating member including: a primary mating member support surface (46) configured to engage with the primary head support surface to allow sliding rotation of the mating member relative to the head about a first rotation axis (60), and configured to... The contact line contacts the primary head support surface to restrict movement of the head toward the mating member along a second axis perpendicular to the first axis of rotation, which is parallel to the elongation axis; and a secondary mating member support surface (54) separate from the primary mating member support surface and configured to engage with the secondary head support surface to allow sliding rotation of the mating member relative to the head about the first axis of rotation, and configured to support against the secondary head support surface to restrict movement of the head relative to the mating member along a third axis (70) perpendicular to the second axis and the first axis of rotation; and a drive unit (34) including a drive wheel axle (36) and a socket (38), the drive wheel axle including an eccentric pin (42) engaging with a drive axle to apply reciprocating motion to the drive axle, and the socket being configured to engage with a motor (14).

The invention discloses a self-adaptive pantograph-catenary intelligent control method, system and device and a storage medium, and the method comprises the steps: obtaining to-be-detected data of a pantograph-catenary system, analyzing the position and state of the pantograph-catenary system based on the to-be-detected data, judging whether the operation state of the pantograph-catenary system is abnormal or not according to an analysis result, and if the operation state of the pantograph-catenary system is abnormal, executing the step 1; if yes, self-adaptive adjustment is conducted on the pantograph-catenary system, whether foreign matter exists in the catenary or not is judged based on the pantograph image, and if yes, alarm information is sent out. An intelligent monitoring system fused by multiple sensors such as a laser radar and a high-definition camera is adopted, a multi-source heterogeneous data intelligent fusion and analysis technology is integrated, the relative position relation and state of the pantograph head carbon sliding plate and the contact line are monitored in real time, and whether response and adjustment are needed or not is analyzed and judged through an intelligent algorithm; therefore, automatic control, adjustment and alarm are realized, the pantograph and the overhead line system are ensured to be in a safe working state in a complex and changeable environment, and the current collection performance is good.

The invention provides a calculation method based on contact line profile three-dimensional splicing and profile abrasion, and belongs to the field of contact line abrasion analysis. The method comprises the following steps: acquiring left and right profile point cloud data to form a profile point cloud sequence connected along a line, and preprocessing the profile point cloud sequence; performing preliminary alignment and accurate alignment on the adjacent section point clouds to generate a continuous and consistent profile point cloud sequence, so as to obtain a complete three-dimensional profile model of the overhead line system and complete three-dimensional splicing; cutting out a profile section on the three-dimensional profile model of the contact network according to a fixed interval, and identifying an abrasion surface; fitting the profile point cloud of the wear surface, calculating wear parameters to realize wear quantitative analysis, and forming a wear change curve along the line direction; and generating three-dimensional profile and abrasion data. According to the method, the engineering application requirements of the rail transit industry on intelligent operation and maintenance, abrasion prediction and service life evaluation of the overhead line system are met, and dynamic reconstruction of the real form of the contact line and high-precision calculation of abrasion parameters are achieved.

The utility model discloses an anti-drop cantilever structure for a railway contact network, which comprises a flat cantilever, an inclined cantilever and a support arm between the flat cantilever and the inclined cantilever, and the flat cantilever and the inclined cantilever are respectively connected to an H-shaped steel column through a base. The base comprises a bottom plate connected with an H-shaped steel column, the bottom plate is connected with two vertically-installed lug plates, a flat double-lug is arranged between the two lug plates, the flat double-lug is provided with a pin shaft hole, the pin shaft hole is connected with lug holes of the two lug plates in a penetrating mode through a pin shaft, and the flat double-lug is used for being connected with a cantilever. The end, close to the bottom plate, of the flat double-lug is connected with a fixing block, the fixing block is connected with a straight rod parallel to the pin shaft, the mounting lug plates on the two sides are provided with arc-shaped grooves, and the two ends of the straight rod penetrate through the arc-shaped grooves of the two lug plates respectively. According to the cantilever structure, hole wall crack propagation and brittle fracture caused by fatigue accumulation are effectively prevented, the service life of the cantilever structure is prolonged, and the safety is improved; and the problem that the cantilever is separated from the contact line due to overlarge side-sway amplitude can be avoided, and normal operation of a railway contact network system is guaranteed.

The application provides an intelligent overhead line system grounding device, and relates to the technical field of overhead line system maintenance tools for electrified railways.The device comprises a master and a slave of a grounding system.The master of the grounding system comprises a limiting system, a gear mounting slot connected to the limiting system, a grounding shoe, a contact resistance screw and the like.The slave of the grounding system comprises a limiting system, a grounding hook, a slave contact resistance screw and the like.The master shell and the slave shell are internally provided with a battery, a mainboard, an electromagnet, a buzzer, an indicator lamp and an antenna mounting piece and the like.Through the master and the slave of the grounding system, the operation logic of hanging and removing the grounding wire is standardized, the contact resistance is detected, and the device plays a prompting role when the operation is in violation of the rules.

The invention relates to the technical field of catenary detection, in particular to a rigid catenary rigid-flexible transition characteristic detection device which comprises a main board, a connecting box is fixedly connected to the bottom surface of the main board, rail wheels are rotatably connected to two opposite sides of the connecting box, and a driving mechanism is fixedly connected to the top surface of the main board. According to the invention, the rail vehicle is used for dragging the mainboard to drive the detection mechanism to pass through the flexible contact line, the rigid-flexible transition section and the rigid contact line, the current detection equipment is used for monitoring the power taking condition of the detection mechanism, and the detection mechanism is used for shooting the contact condition of the detection mechanism and the contact line; a user can conveniently know the contact conditions of the rigid contact line, the flexible contact line, the rigid-flexible transition section and the detection mechanism, the detection mechanism is matched with the driving mechanism to detect the elasticity of the grooving type rigid-flexible transition element, and the pulling mechanism can be used for detecting the flexible contact line and the rigid contact line. Therefore, the installation conditions of the rigid contact line and the flexible contact line are detected.