512 results about "Track gauge" patented technology

The embodiment of the invention provides a multi-unmanned aerial vehicle cooperative surveying and mapping method and system for areas along a railway, and belongs to the technical field of railway surveying and mapping. The method comprises the steps that the unmanned aerial vehicle collects monitoring data in the flight process; the relative position and posture between the aircrafts are dynamically adjusted, and an observation configuration with variable baseline parameters is constructed; laser ranging modules carried by the unmanned aerial vehicles are controlled to execute synchronous ranging operation, and multiple sets of laser point cloud data covering the railway structure area are generated; performing coordinate registration and fusion on the collected laser point cloud data, and combining position information and attitude information of each unmanned aerial vehicle; and extracting geometric dimension parameters of the railway structure from the compensated three-dimensional model, and outputting the geometric dimension parameters as measurement results. According to the scheme, high-precision non-contact measurement of geometric dimension parameters such as the track gauge, the height difference and the roll angle of a railway track structure is achieved.

The invention discloses a rapid measurement method and system for geometric irregularity of a track in a turnout zone. The method comprises the steps that complete three-dimensional point cloud data of the surface of a railway turnout steel rail are obtained in real time through a multi-angle line structure laser scanner on a special detection vehicle body; accurate attitude and position data of the detected vehicle body in the measurement process are obtained in real time through an inertial navigation measurement unit and an odometer; obtaining a high-precision pose of a detected vehicle body through a robust dead reckoning method of an IMU (Inertial Measurement Unit) assisted by a speedometer dynamic lever arm value based on a variable wheel-rail contact point; constructing a turnout area three-dimensional point cloud model; extracting geometric irregularity key points of turnout steel rail point cloud from the turnout area three-dimensional point cloud model; calculating parameters of track gauge, horizontal and rail direction irregularity and unevenness; the special detection vehicle body can quickly and stably pass through a turnout area to complete continuous and accurate measurement of geometric irregularity of a track.

The invention belongs to the technical field of data measurement, and discloses a high-speed railway ballastless track construction measurement method, which comprises the following steps of: carrying out internal reference and external reference calibration on a binocular camera of a track detection trolley; obtaining related data containing a binocular image, and carrying out space-time alignment processing on the related data so as to construct a prediction state vector; carrying out stereo matching on the binocular image to generate a prediction disparity map, and carrying out three-dimensional reconstruction on the prediction disparity map to obtain a track point cloud map; and extracting a track inner side point coordinate sequence and a track height program sequence from the track point cloud picture, and generating a corresponding track gauge table and a corresponding smoothness table. According to the invention, vision, three-dimensional reconstruction and inertial navigation technologies are integrated, and integrated detection of gauge, elevation and smoothness parameters is realized.

The invention provides intelligent track flaw detection equipment and a flaw detection method, and belongs to the technical field of track flaw detection. According to the method, an innovative strategy of staged flaw detection is adopted, double-mode dynamic switching of rapid rough flaw detection and low-speed fine flaw detection is utilized, a high-frame-rate visual system is used for screening surface defects, ultrasonic wave and laser ranging are combined, deep cracks and track gauge deviation are detected, all defect types are covered, and defect missing detection errors at a single speed are compensated. The flaw detection equipment comprises a flaw detection trolley, the flaw detection trolley comprises a chassis, and the chassis is composed of an advancing cross beam and two groups of advancing longitudinal beams connected to the end parts of the advancing cross beam; the advancing cross beam is connected with a visual system and a laser range finder, and an ultrasonic flaw detector is arranged on the advancing longitudinal beam. According to the invention, ultrasonic wave, machine vision and laser ranging technologies are integrated, full-dimension, full-climate and full-scene track flaw detection is realized, and the railway operation and maintenance efficiency, the intelligent level and the operation safety are greatly improved.

The invention provides a railway bridge line beam eccentricity measuring method, which at least comprises the following steps of: acquiring position information of a bridge guardrail by adopting a radar module, and adjusting the height position of a laser ranging module according to the position information, so that the laser ranging module can detect the bridge guardrail for ranging; the laser ranging module is adopted to measure the distances between the first steel rail and the bridge guardrails on the two sides of the first steel rail at the same time, and the eccentric distance is calculated according to the distance parameters measured by the laser ranging module and the track gauge of the track. The invention provides a device for measuring the eccentricity of the railway bridge line beam. The measuring device is applied to the method for measuring the eccentricity of the railway bridge line beam. The method has the beneficial effect that the eccentric distance along the track can be automatically and continuously measured.

The invention relates to the technical field of rail transit, and provides a multifunctional rail detection system, which comprises a multi-source data acquisition unit, an optical fiber inertial navigation sensor, a laser array module, a dual-mode camera group, a radar speed measurement module and a temperature and humidity sensor, the data acquisition module is used for synchronously acquiring track geometric parameters, three-dimensional surface topography, inertial navigation data, real-time vehicle speed and environmental parameters; the dynamic processing unit is arranged in the compartment and comprises a data fusion controller, a self-adaptive Kalman filtering module, an anomaly diagnosis engine and an edge computing host, and the data fusion controller integrates multi-source data through a multi-thread parallel processing technology. On the basis of self-adaptive Kalman filtering and vehicle speed-parameter dynamic mapping, the track gauge detection error under the variable speed working condition is reduced to + / -0.3 mm from + / -3 mm, and the curvature radius calculation error lt is obtained; and the predictive maintenance model prolongs the overhaul period of the track by 40%, and reduces the operation and maintenance cost by 35%.

The invention discloses a rail gauge and level detection method and system based on mobile laser scanning, relates to the technical field of railway track detection, and solves the problem that effective data is difficult to efficiently and accurately extract from mass data for gauge and level detection in the existing mobile laser scanning technology. According to the technical scheme, the method is characterized in that steel rail railhead point cloud data are segmented from rail laser point cloud data on the basis of the geometrical shape of a standard cross section of a steel rail railhead, irrelevant data are reduced as much as possible while the rail gauge and data needed by horizontal detection are reserved, and the data processing pressure is effectively reduced; steel rail railhead point cloud data is obtained based on combined segmentation of geometric constraint and physical constraint, and the segmentation precision of the steel rail railhead part is improved; point cloud data are simplified based on a steel rail head point cloud model, and the calculation precision is guaranteed while the calculation pressure is reduced; feature points and mileage information are stored based on a quick lookup table, quick detection is realized, and the detection efficiency is improved.

The embodiment of the invention provides a rail distance measuring device for rail transit, and relates to the technical field of rail distance measurement. A track distance measuring device for track traffic comprises a measuring body, two sets of moving assemblies, a marking assembly, a driving part, an auxiliary measuring mechanism and a sealing assembly, and the two sets of moving assemblies are located on the two sides of the measuring body respectively and used for walking on a track; the auxiliary measuring mechanism is mounted on one side of the measuring body, and two ends of the auxiliary measuring mechanism are respectively contacted with the inner walls of the two groups of rails. High-precision track gauge measurement is achieved through the measuring wheel and the encoder, track gauge abnormity is sensed in real time in combination with the side rolling wheel and the displacement sensor, automatic marking is achieved in cooperation with the pump body, the storage box and the liquid outlet pipe, and leakage is prevented through the sealing assembly in the non-working state; meanwhile, full-automatic control over rolling wheel avoiding, sealing relieving and liquid spraying marking is achieved through a driving part linkage mechanism, and the track detection precision, efficiency, the intelligent level and the device reliability are remarkably improved.

The utility model relates to the technical field of track detection, and aims to provide a comprehensive inspection trolley for track state detection, which has the characteristics of convenience in use and high working efficiency. According to the technical scheme, the comprehensive inspection trolley for track state detection is characterized in that the comprehensive inspection trolley comprises a walking unit, a track flaw detection unit and a track geometric state detection unit, and the track flaw detection unit comprises a flaw detection host and an ultrasonic flaw detection wheel and an ultrasonic coupling mechanism which are arranged on the two sides of the walking unit; the track geometric state detection unit comprises a levelness measuring mechanism and track gauge measuring mechanisms arranged on the two sides of the walking unit.

The invention discloses a railway track online movement detection system and method, and relates to the technical field of rail detection, and the technical scheme is that the railway track online movement detection system comprises a detection management platform module, a signal processing module is arranged at the connection end of the detection management platform module, and a data processing module is arranged at the connection end of the signal processing module; the signal processing module comprises a track geometric parameter detection management module, a track fastener detection module and a foreign matter detection module, and the track geometric parameter detection management module comprises a track height detection module, a track gauge detection module, a track direction detection module, a horizontal detection module and a triangular pit detection module. The rail geometric parameter detection and management module comprises an image monitoring module, a laser photoelectric monitoring module and an ultrasonic monitoring module. The rail geometric parameter detection and management system has the beneficial effects that the working efficiency of an inspection mode is high, problems on a railway transportation line are found in time, a scientific and reasonable method is applied in time to maintain and repair the line, and good operation of the line and transportation safety are ensured.

The present invention discloses a bogie axle box for high-speed trains with an overload self-adjusting structure, comprising a bogie housing, an axle box housing, a gauge changing mechanism, and further comprising: an air spring, the air spring being located at the gap between the bogie housing and the axle box housing; a support member for reducing the friction between the axle box housing and the axle box support rail, the support member being arranged at one end of the axle box housing in contact with the axle box support rail; a first groove, the first groove being arranged on the outside of the axle box housing; a detection member acting on the first groove and the sunken track of the track changing device, and being able to inform the driver of the gauge changing state. In the present invention, when the gauge change is completed and the wheel pair distance is adjusted, the second connecting rod is separated from the pressure switch under the elastic action of the first spring and the second spring, thereby disconnecting the circuit, reminding the operator in the control room that the limit pin has been re-locked, and the real-time state of the gauge changing operation can be effectively informed to the operator in the control room.

The invention relates to the technical field of data processing, and discloses a railway construction data processing method and system. The method comprises the steps of performing semantic annotation on track laying, line measurement and construction monitoring data through RDF semantic association to obtain a semantic data set; setting smoothness constraint screening qualified data according to the gauge deviation and the elevation deviation; qualified data are input into an improved firework algorithm, and track geometric parameters are optimized through a curvature self-adaptive explosion mechanism; adopting improved Kriging interpolation to complement the track center line, the track surface elevation and the track gauge change data; and establishing a construction quality constraint matrix, and cooperatively adjusting track line shape, elevation control and track gauge precision through a sequential quadratic programming algorithm. According to the method, the technical problems of lack of multi-source data semantic association, insufficient professional algorithm adaptability and insufficient parameter collaborative optimization capability in railway construction are solved.

Embodiments of the present application provide a kind of multi-unmanned aerial vehicle cooperative surveying and mapping method and system for the area along railway, belong to railway surveying and mapping technical field.The method comprises: unmanned aerial vehicle acquires monitoring data in flight process;Dynamic adjustment the relative position and attitude between aircraft, build the observation configuration with change baseline parameter;Control the laser ranging module of each unmanned aerial vehicle carried out synchronous ranging operation, generate multiple sets of laser point cloud data covering railway structure area;The coordinate registration and fusion of the laser point cloud data collected are carried out, and the position information and attitude information of each unmanned aerial vehicle are combined;From the three-dimensional model after compensation, the geometric dimension parameter of railway structure is extracted, and the geometric dimension parameter is output as measurement result.The present application scheme realizes the high-precision non-contact measurement of the geometric dimension parameter such as track gauge, height difference, lateral angle of railway track structure.

The invention relates to the technical field of railway engineering, in particular to a track smoothness influence factor correlation analysis method which comprises the following steps: taking track gauge deviation, unevenness, horizontal irregularity, track direction irregularity and curvature change rate corresponding to track smoothness as parameter components; calculating a reference value and an allowable threshold value between the parameter components by using a Gaussian mixture model, and determining the weight of each parameter component; identifying degradation characteristics of each parameter component under the time sequence; using the updating time of the comprehensive degradation degree as a key node of each parameter component by using a linear weighting form; verifying the association probability of each key node and the maintenance record, setting an early warning parameter set, and setting the change trend of each key node according to the number of continuous early warning times in the early warning parameter set; performing interaction analysis based on the change trend of each key node, and determining an early warning range boundary of each parameter component under parameter accumulation; the accuracy and efficiency of track smoothness analysis are realized.

The utility model discloses a bogie stacking structure, which relates to the technical field of railway engineering vehicles, and comprises at least two stacked bogies, a stacking device is arranged between every two vertically adjacent bogies, and the stacking device comprises four support limiting frames distributed in a rectangular shape. A transverse supporting rod is arranged between every two transversely adjacent supporting limiting frames, and a longitudinal supporting rod is arranged between every two longitudinally adjacent supporting limiting frames. The ends of the transverse supporting rods and the ends of the longitudinal supporting rods are connected with the corresponding supporting limiting frames through adjusting locking devices respectively. The utility model solves the problems that the conventional bogie can only be stored on a station track singly and the space utilization rate is low. The bogie stacking device provides a new bogie storage mode, so that the bogies can be safely and efficiently stacked and stored on the flat ground, and the utilization efficiency of a working site is remarkably improved. The overall tool design considers the diversity of the track gauges and the wheel set types, and is also used when the track gauges and the wheel set models change.

The distance-adjustable railway gauge pull rod comprises a storage square pipe, four sets of partition plates are installed in the storage square pipe, a two-way screw rod penetrates through the four sets of partition plates through bearings, the side wall of the two-way screw rod is connected with two sets of lead screw sleeves in a sleeved mode, the side walls of the two sets of lead screw sleeves are connected with sleeving plates in a sleeved mode, and the sleeving plates are connected with the two sets of lead screw sleeves in a sleeved mode. Insulating rods are mounted on the far-away faces of the two sets of sleeving plates, the far-away ends of the two sets of insulating rods slidably penetrate through the opposite faces of the two sets of partition plates on the two sides correspondingly, four sets of mounting shells fixedly penetrate through the lower portion of the storage square pipe, and lifting plates are arranged in the four sets of mounting shells correspondingly; and universal wheels are mounted at the lower parts of the four groups of lifting plates. The distance-adjustable railway gauge pull rod has the advantages that the partition plate and the sealing cover are adopted, the use position of the clamping device can be stored and adjusted through the partition plate and the sealing cover, and the transportation safety of the distance-adjustable railway gauge pull rod is improved.

The utility model relates to the technical field of gauge measurement, and discloses a high-precision measuring device for a high-speed rail track gauge, and the device comprises a gauging rule, one end of the gauging rule is fixedly connected with a fixed seat, and the other end of the gauging rule is slidably connected with a sliding seat; two groups of walking mechanisms are arranged below the fixed seat, a group of walking mechanisms is arranged below the sliding seat, and each walking mechanism is used for enabling the gauging rule to move on a rail; the traveling mechanism below the fixed seat is clamped on a rail through a clamping assembly, the clamping assembly comprises at least two clamping blocks, the position of at least one inner side clamping block can be adjusted to adapt to the rail and keep stable, a conductive block is arranged on the inner side of each clamping block, and the conductive blocks are connected with conductive heads. By arranging the clamping assembly, dynamic self-adaptive clamping of the rail is achieved, stable contact between the gauging rule and the rail in the measurement process is ensured, and the stability and accuracy of measurement are remarkably improved.

The invention relates to the technical field of rail traffic detection, in particular to a mounting seat and detection equipment based on rail installation, and the mounting seat comprises a frame and a rail clamp; the frame comprises a cross rod which is arranged between two adjacent sleepers and is positioned below the track; two rail clamps used for being connected with the two rails respectively are installed on the transverse rod. At least one rail clamp is movably installed on the transverse rod and can freely move on the transverse rod. According to the mounting seat, the frame can be quickly and conveniently mounted on the rail through the rail clamp, so that the required mounting time is short, the mounting is easy, the workload is small, and the mounting can be completed within one skylight point time. Besides, as at least one rail clamp is movably mounted on the cross rod, when the relative position between the two rails is changed, the relative position between the two rail clamps can also be changed, so that the whole mounting seat can adapt to rail distance deviation and lateral sliding of the rails during vehicle passing.

The utility model provides an integral type flexible track fixing device, and belongs to the technical field of traveling tracks of hoisting and transporting machinery. The rail fastener solves the problem that an existing rail fastener is small in rail gauge adjusting range. The device comprises a steel base plate, the upper surface of the steel base plate is provided with two connecting areas, the space between the two connecting areas is used for containing a steel rail, each connecting area is provided with an upper pressing plate through a pressing bolt, the upper pressing plates abut against the side portion of the steel rail, and the upper pressing plates are provided with pressing parts pressed on the steel rail. Each connecting area is internally provided with an installation groove extending in the longitudinal direction perpendicular to the steel rail, and rod heads of the compression bolts are installed in the installation grooves. The mounting grooves extend in the longitudinal direction perpendicular to the steel rails, so that the adjustable range of the compression bolts is large, and the adjustment range of the gauge is large.

The invention relates to intelligent track space attitude detection equipment and a detection method thereof.The detection equipment comprises two walking systems, rod inserting equipment, track detection equipment and a control system, the two walking systems are connected to the upper side of a track in a rolling mode, and the rod inserting equipment and the track detection equipment are installed on the two walking systems correspondingly; a positioning navigation system and a data acquisition system are mounted on the walking system, and the track inspection equipment comprises a coordinate acquisition system, a track gauge measurement system and an ultrahigh measurement system. According to the design, the rod inserting equipment and the rail inspection equipment are combined, automatic walking is conducted through the walking system, therefore, the operation stability can be guaranteed, the labor intensity is greatly reduced, meanwhile, the real-time coordinates of the rod inserting equipment are obtained in combination with the positioning navigation system and the data acquisition system, and therefore the accuracy and feedback speed of rod inserting measurement are effectively guaranteed; the positioning navigation system is combined with the superelevation measuring system and the track gauge measuring system, so that the track initial adjustment speed can be increased, and the track fine adjustment precision can be improved through cooperation of the inserting rod equipment and the track detection equipment.

The invention relates to the technical field of robots, in particular to a railway line detection intelligent robot which comprises a main body, and the main body is provided with a walking mechanism used for driving the robot to walk; the image acquisition module is used for acquiring railroad sleepers, railroad sleeper spike bolt images, oil coating processes, steel rail surface profiles and the like; the intelligent sensing system is used for acquiring railway detection information; the detection information comprises identification and accurate positioning of railroad sleeper spikes and bolts, detection of positions and states of the railroad sleeper spikes and bolts, measurement of rail gauges and surface profiles and the like; the intelligent control technology management platform is used for receiving the detection information of the intelligent sensing system and the image data transmitted by the image acquisition module and carrying out statistical analysis; and the oil coating mechanism is used for synchronously carrying out oil coating operation on the railway sleeper spike bolt. According to the railway sleeper spike bolt oiling device, the railway sleeper spike bolt oiling efficiency and quality are improved, multi-directional detection and image acquisition of a steel rail are achieved, and the automation degree is high.

The invention relates to a steel rail head width measuring device and method, and belongs to the technical field of steel rail detection equipment and methods. According to the technical scheme, a measuring base (1) is attached to the position of a rail head of a steel rail (4) in the middle, a measuring claw (3) is installed at the front end of the measuring base (1), and the measuring claw (3) makes contact with linear sections of the two side faces of the rail head; a magnetic railing sliding piece (15) of the magnetic railing ruler (2) is connected with the measuring claw (3), and the back face of the magnetic railing ruler (2) is connected with the measuring base (1). The beneficial effects of the invention are that the reference device which is attached to the tread of the steel rail and has a magnetic attraction function is utilized to realize the accurate positioning of the verticality of the measuring device relative to the steel rail and the measuring point, and at the same time, the two side surfaces of the rail head are wedge-shaped. A rail head width tolerance measurement problem at a gauge corner is converted into a vertical displacement measurement problem of a contact point of a measurement claw and a steel rail side surface, a magnetic railing ruler is used for measurement, and amplification conversion is performed according to a proportion, so that the measurement precision is further improved.

The utility model relates to the technical field of bridge inspection vehicles, aims to solve the problems that in the prior art, due to arrangement of tracks and portal frames, standardization of trusses is difficult, the efficiency of design, development and large-scale production of conventional beam bottom inspection vehicles is low, and manpower resources are wasted, and provides a suspension type inspection vehicle portal frame with a variable track gauge. Comprising an upper connecting seat, the upper connecting seat is used for being connected with a rotary support of a walking mechanism, the bottom of the upper connecting seat is connected with at least one pair of adjustable pull rods, the length of the adjustable pull rods can be adjusted and changed, and one ends of two of the pair of adjustable pull rods are hinged to the same point of the bottom of the upper connecting seat. The other ends of the two adjustable pull rods are hinged to the two ends of a fixing frame respectively, the fixing frame is used for being fixed to the top face of a truss, and the two ends of the fixing frame are fixed to truss nodes. According to the utility model, under the condition that the truss of the inspection vehicle is reasonably stressed and the portal frame is arranged at the node position of the truss, the installation and arrangement of the inspection vehicle at any gauge can be realized.

The invention provides an equivalent taper correction calculation method and system based on wheel rail profile data, and relates to the technical field of motor train unit application and maintenance, and the method comprises the steps: collecting profile coordinate data of wheels, wheel diameters and distance measurement in wheel pairs through machine tool measurement equipment, and obtaining standard rail profile coordinate data and a rail gauge according to the type of a steel rail; carrying out secondary interpolation and smoothing processing on the wheel rail profile coordinates by adopting a spline function to generate wheel rail profile data; the equivalent taper is calculated through a nonlinear differential equation integral algorithm, and a relation curve of the equivalent taper and the transverse movement amount is finally solved; interpolation processing is conducted on the relation curve of the equivalent taper and the transverse movement amount, final correction is conducted on the nominal equivalent taper through an origin symmetry correction algorithm, and a corrected equivalent taper value is obtained. The method has the beneficial effects that the measurement precision of the equivalent taper is improved, the wheel turning repair strategy is optimized, the operation safety and stability of the motor train unit are guaranteed, and the maintenance cost is reduced.

This invention discloses a wheel gauge adjustment device and a rail grinding trolley, specifically relating to the technical field of rail grinding equipment. The wheel gauge adjustment mechanism includes two independent pneumatic actuators, two telescopic displacement detection mechanisms, and an air source assembly. The two pneumatic actuators are respectively connected to two wheel assemblies, enabling independent driving of the wheels along the track width direction. The air source assembly provides power to the pneumatic actuators. The telescopic displacement detection mechanisms detect the wheel telescopic displacement in real time. The gauge detection mechanism is equipped with left and right displacement sensors, which respectively detect the distance between the left and right tracks and the corresponding sensors in real time. The controller calculates the real-time track gauge and wheel alignment deviation, controlling the two pneumatic actuators to operate synchronously or differentially, achieving automatic wheel alignment relative to the track centerline. This invention enables flexible gauge adjustment, ensuring stable wheel-axle gauge and precise alignment of the trolley and rail during operation, providing reliable structural support for efficient and high-quality rail grinding operations.

This invention discloses a steel-concrete composite sleeper for ballastless track, belonging to the field of ballastless track technology. The steel-concrete composite sleeper includes multiple adjusting pipes and two spaced-apart sleeper units. Each sleeper unit includes multiple steel pipes and sleeper blocks. For any given sleeper unit, the multiple adjusting pipes and multiple steel pipes correspond one-to-one. One end of each steel pipe is inserted into a sleeper block, and each steel pipe is filled with concrete filler. Each sleeper block and the corresponding concrete filler are integrally cast with concrete. The other ends of two opposing steel pipes are movably and coaxially inserted into the two ends of the corresponding adjusting pipes to adjust the spacing between the two sleeper blocks. This invention provides a steel-concrete composite sleeper for ballastless track, which not only allows for the pre-casting of sleeper units, improving the overall construction efficiency of ballastless track, but also allows for adjustment of the track gauge between the two rails, ensuring the gauge meets on-site installation requirements.

The utility model discloses a railway gauging rule for a railway, which comprises a main body, the main body is in a long strip shape, the two ends of the main body are respectively and fixedly connected with a limiting block, the main body is sleeved and movably provided with a movable block, the lower surface of the limiting block at one end and the lower surface of the movable block are respectively and fixedly connected with vertical plates which are matched with each other, and the vertical plates are arranged on the main body. The two vertical plates are arranged in parallel, the top of the main body is provided with a handle, the lower surface of the main body is movably provided with a positioning block, the main body is arranged, the two ends of the main body are provided with limiting blocks, the main body is movably provided with a movable block, the opposite vertical plates are arranged on the surfaces of the movable block and the limiting blocks, and the movable block is moved, so that the positioning block can be conveniently positioned. The two vertical plates make contact with the surface of the rail to achieve distance measurement of the rail, the positioning block is arranged, the position of the movable block can be fixed by controlling the positioning block to move, and therefore the movable block can be fixed more conveniently, and the device is more convenient to use.

The invention discloses a subway operation and maintenance track geometric dimension measurement and acquisition real-time alarm system, which comprises a transverse frame, a first connecting sleeve is mounted on the left side of the outer part of the transverse frame, a track gauge and superelevation sensor is mounted at the center of the top of the transverse frame, and a support frame is mounted at the center of the front side of the transverse frame. A cart handle is movably connected into the supporting frame through a rotating shaft, a second connecting sleeve is installed on the right side of the exterior of the transverse frame, and placing plates are connected to the bottoms of the front side and the rear side of the second connecting sleeve. The moving rollers are transferred to the top of the subway track, and the cart handle is pushed to enable the transverse rack to move forwards. In the process that the moving rollers roll forwards at the top of the subway track, the mileage coding sensor completes measurement of the walking mileage of the moving rollers; furthermore, in the process of moving the rollers forwards, the track gauge, the superelevation sensor and the inclination sensor also detect the subway track data in real time, and all types of detection data are transmitted to the single-chip microcomputer.

A track gauge recognition method and device based on millimeter wave radar point cloud, the method comprising: acquiring millimeter wave radar point cloud collected by a millimeter wave radar at a front end of a railway vehicle, wherein the millimeter wave radar point cloud comprises a plurality of first point cloud points; extracting a plurality of second point cloud points located in a preset position interval from the plurality of first point cloud points; extracting a plurality of third point cloud points within a preset speed range from the plurality of second point cloud points; clustering the plurality of third point cloud points according to the distribution of the plurality of third point cloud points to obtain a plurality of skeleton points corresponding to a track center position; determining the direction of the skeleton points according to the positions of the third point cloud points within a preset range around the skeleton points; determining track gauge boundary points located on both sides of each skeleton point according to the position and direction of each skeleton point and the track width; and determining the track gauge according to the plurality of track gauge boundary points. The present application can accurately recognize the track gauge based on millimeter wave radar point cloud, and can overcome the influence of complex weather and light interference.