668results about "Measuring apparatus" patented technology

The invention belongs to the technical field of ballastless track paving construction, and particularly relates to a paving system for ballastless track paving construction, which comprises a sample steel rail used for detachably connecting a plurality of sleeper blocks and driving the sleeper blocks to move; the sleeper fixing frame is used for fixing the relative positions of the two sample steel rails; the sleeper pier fine adjustment mechanism comprises a height fine adjustment mechanism, a center line fine adjustment mechanism, a lifting adjustment mechanism and a transverse groove piece; the fixed cross rod is arranged in a groove cavity of the transverse groove piece in a sliding manner; the center line fine adjustment mechanism is used for transversely pushing the fixed cross rod; the height of the two ends of the fixed cross rod is adjusted through the lifting adjusting mechanism and the height fine adjusting mechanism respectively. According to the scheme, the mounting positions of the sleeper blocks can be accurately adjusted; adjustment of the center line position and the height position of batched sleeper blocks can be achieved, so that the ballastless track paving construction speed is increased, and the construction efficiency is improved.

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.

Described herein is a lightweight, power-efficient edge computing system, called the Autonomous Power-efficient Track Inspection System (APTIS), designed specifically for railroad track component inspection, and methods for making same, using an edge-computing device equipped with a custom computer vision model for meticulous track inspection that employs advanced deep learning and AI technologies, enabling automated detection and evaluation of the condition of various track components in concert with built-in cameras for surveillance.

The invention provides a track direction and height detection method and a track detection device.The track direction and height detection method comprises the steps of data acquisition, device track acquisition, compensation value acquisition, real track acquisition and track direction and height data acquisition, angular velocity data is acquired through a gyroscope, angle data is acquired through an inclinometer, and the angular velocity data is acquired through an angle sensor; the contour data of the two steel rails are collected through the line laser sensor, and the mileage data are collected through the mileage detector, so that the three-dimensional track coordinates of the track detection device can be obtained based on the angular velocity data, the angle data and the mileage data; then, based on the high-precision line laser contour data, obtaining a feature point coordinate at a specified position on the inner side of the steel rail as a rail direction compensation value, and compensating a three-dimensional track coordinate of the device by using the feature point coordinate, so as to obtain a real track coordinate at the specified position on the inner side of the steel rail along the x direction and the top surface of the steel rail along the z direction; and accurate rail direction and height data can be calculated.

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 discloses a turnout base plate post-welding leveling device, and relates to the technical field of detection devices.The turnout base plate post-welding leveling device comprises direction adjusting assemblies, the direction adjusting assemblies are symmetrically arranged, and fixed-point adjusting assemblies are slidably connected to the interiors of the symmetrically-arranged direction adjusting assemblies. By means of cooperation of a first servo guide rail and a second servo guide rail in the direction adjusting assembly, accurate positioning in a two-dimensional plane is achieved, the device can rapidly reach any local deformation area of the turnout base plate, the leveling operation pertinence and efficiency are greatly improved, the direction and size of the acting force on the base plate are accurately controlled, and the device can be widely applied to the field of complex local deformation of the turnout base plate. And the leveling precision can be effectively handled, the leveling precision is greatly improved, the backing plate is prevented from being secondarily damaged, dynamic fine adjustment and protection are achieved, and the leveling quality is comprehensively improved.

The invention discloses a turnout fine adjustment system and method, the system comprises a fine adjustment moving trolley, an elevation adjuster, a center line adjuster and an inclination angle detection trolley, the end part of the fine adjustment moving trolley is hinged with a cross beam capable of swinging and a lengthened beam, and the elevation adjuster is mounted on the cross beam; a visual camera and a laser distance measuring sensor are arranged at the bottom of the elevation adjuster; the center line adjuster comprises a double-thread telescopic rod and a transverse fine adjustment device, and the transverse fine adjustment device is detachably clamped on the double-thread telescopic rod and can drive the double-thread telescopic rod to rotate so as to enable the double-thread telescopic rod to extend or retract; the method comprises a turnout elevation fine adjustment method, a turnout center line fine adjustment method and a turnout elevation and center line fine adjustment method. Fine adjustment of the elevation and the center line of the turnout can be rapidly completed, manual auxiliary participation is reduced, manpower and material resources are saved, and the construction efficiency is improved.

The utility model discloses a railway ballast track bed resistance rapid measuring vehicle which comprises a vehicle frame arranged above a track, a front wheel set and a rear wheel set are installed on the vehicle frame in the length direction of the track at intervals, and the front wheel set and the rear wheel set are both rolled on two steel rails. Two fastener disassembling and assembling mechanisms are installed on the frame in the length direction of the rail at intervals, two rail lifting mechanisms are installed on the frame in the transverse direction of the rail at intervals, the two rail lifting mechanisms extend to the rail webs of the two steel rails respectively, and two hydraulic supporting mechanisms are installed on the frame and located between the two fastener disassembling and assembling mechanisms. A resistance measuring mechanism is installed on the frame and located between the two hydraulic supporting mechanisms. According to the utility model, the operation convenience can be effectively improved, the detection efficiency is greatly improved, and safety accidents are avoided. The device is suitable for the technical field of railway ballast track bed resistance detection.

The present invention provides a method for detecting track level and triangular pits and a track detection device provided by the present invention, the method includes a data collection step, an initial level value acquisition step, a compensation value acquisition step and a level value compensation step, wherein the roll angle data is collected by an inclinometer, the rail profile data is collected by a line laser sensor, and the mileage data of the device moving along the track is collected by a mileage detector, so that the initial level value of a specific position of the track can be obtained based on the roll angle data and the mileage data, and then the height difference between the highest points of the top surfaces of the rails on both sides is calculated based on the high-precision line laser profile data, and the initial level value is compensated by using the height difference, so as to obtain an accurate final level value, and further obtain an accurate triangular pit value. The method makes full use of multiple types of sensor data of the track detection device, accurately compensates the initial measurement results, and significantly improves the accuracy and reliability of track level and triangular pit measurement.

The invention provides a construction method of a CRTS III type slab ballastless track, and relates to the technical field of high-speed rail construction, and the construction method comprises the following steps: mounting base plate steel bars, side forms, end templates and limiting groove templates, placing foam plates at expansion joints, and reserving track slab pressing and anchoring holes; base plate concrete is poured, and base plate concrete formwork removal, surface finishing, maintenance and expansion joint construction are carried out after pouring; constructing a geotextile isolation layer and an elastic cushion layer; limiting groove steel bars and self-compacting concrete layer steel bar meshes are installed, and track plates are placed; before and after the track plate and the base plate are fastened by the pressing device, the track plate is finely adjusted by the fine adjustment device; and a self-compacting concrete formwork is installed, self-compacting concrete is poured, and post-pouring treatment and curing are conducted. The track plate and the base plate are fastened through the pressing device, so that the track plate, the base plate and the self-compacting concrete layer are tightly attached in the self-compacting concrete pouring period, and the situation that reworking or track laying is difficult due to the fact that the floating amount of the track plate is too large is avoided.

The invention discloses a method and a device for positioning a steel rail telescopic regulator based on dynamic and static data fusion. The method comprises the following steps of: acquiring track geometric data, a railway track curve and machine account information of which the distance from the steel rail telescopic regulator is within a preset distance range; according to a railway track curve and ledger information, carrying out initial correction on the track geometric data; performing modal decomposition on the track geometric data after the initial correction by using an adaptive chirp signal modal decomposition algorithm; performing Wigner time-frequency analysis on the track geometric data after modal decomposition to generate a mileage frequency diagram; converting the mileage frequency diagram into a mileage energy diagram by utilizing a preset moving window edge spectrum analysis algorithm; according to the mileage energy diagram and the ledger information, the position of the steel rail telescopic adjuster is determined, the efficiency and accuracy of positioning the steel rail telescopic adjuster can be improved, the positioning time and labor cost are reduced, and then the stability and safety of high-speed railway driving performance are improved.

A sensor device (3) for detecting strains in a linear infrastructure component (12), in particular a track rail, comprises a first sensor unit (16, 16') with a first support (28) and at least one strain sensor mounted on the first support (28) for detecting a strain at the first measuring point (19), a second sensor unit (17) with a second support (29) and at least one strain sensor mounted on the second support (29) for detecting a strain at the second measuring point (20), a coupling means (18) connected to the first support (28) and the second support (29) for defining a measuring distance (d) between the first measuring point (19) and the second measuring point (20) along a longitudinal direction (21) of the linear infrastructure component (12), a measuring arrangement (19) with the sensor device (3), a method, and an application device for applying the sensor device (3).

The present invention belongs to the technical field of laser ranging, and is specifically a system for automatically detecting track gauge and height guide based on laser ranging and a method for using the system. The system includes a main control module, a data detection part, a moving part, and a transmission display part; the main control module controls the moving part to travel on the rail, controls the data detection part to open and close and receive data, and is partially connected to the transmission display module by signal; the data detection part is installed on the moving part, and the data detection part includes a laser displacement sensor LL horizontally placed on the left side of the moving part, a laser displacement sensor LR horizontally placed on the right side of the moving part, a laser displacement sensor VL vertically placed on the left side of the moving part, and a laser displacement sensor VR vertically placed on the right side of the moving part. The present invention can realize automatic detection of track gauge and height guide, reduce labor costs, and has a measurement correction model that can reduce measurement errors and improve adjustment efficiency.

The invention discloses a construction method for replacing an elastic base plate of a ballastless track of a high-speed railway, which belongs to the technical field of tracks and comprises the following specific steps of: 1, preparing construction, 2, marking and acquiring original data, 3, mounting a lifting appliance, and connecting a portal crane with the lifting appliance through a steel wire rope, 4, lifting a track plate and separating the track plate from a base plate. 6, replacing an elastic cushion layer; 7, carrying out auxiliary fine adjustment falling and mounting; 8, carrying out track bed slab reset measurement; and 9, starting the next work construction until the construction of the whole rectification and replacement section is completed. The problems that in the prior art, the replacement construction efficiency of the ballastless track elastic base plate is low, the precision is difficult to guarantee, and the construction difficulty is large under the complex working condition are solved, operation is easy and convenient, and practicability is high.

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 invention relates to high-speed rail track design and matching thereof, in particular to a controllable ballastless track module and a track assembly. The ballastless track module comprises a transverse sleeve rod, two symmetrical notches are formed in the transverse sleeve rod, and the transverse sleeve rod is divided into two side sections and a center section through the notches; the inner rod comprises a movable rod body and two mounting grooves which are formed in the movable rod body and open upwards, the mounting grooves are formed in the positions corresponding to the notches so that the movable rod body can be partially exposed out of the notches, and the rails can be clamped in the mounting grooves; the fine adjustment devices are connected to the ends, away from each other, of the two side sections respectively, each fine adjustment device comprises a fixing mechanism, a vertical positioning mechanism and a transverse adjustment mechanism which can be independently disassembled and assembled, and the transverse adjustment mechanisms are arranged in the side sections and connected with the movable rod body; the movable rod body can be driven by the transverse adjusting mechanism to adjust the transverse position of the rail, and the vertical adjusting mechanism is connected with the fixing mechanism and the edge section so that the height of the edge section can be adjusted.

This disclosure relates generally to systems and methods for data acquisition and asset inspection in presence of magnetic interference. Data acquisition and assets inspection systems in many infrastructures such as railway, power line, and bridges provide inaccurate results in presence of magnetic interference. The proposed system and method proposes UAV based navigation through a dynamic correction path to inspect one or more assets in one or more infrastructures. A plurality of sensors are integrated with the UAV to acquire images of the one or more assets in presence of magnetic field. The acquired images are further processed to segment and detect anomalies in one or more parts of the one or more assets. The detected anomalies are further classified as potential anomalies and non-potential anomalies. The proposed method provides accurate results with reduced processing time.

To provide a measurement device which can measure a measurement object with excellent positional accuracy.SOLUTION: A measurement device 2 comprises: an image acquisition unit 242; a target position specification unit 243 which specifies a position of a target T in a photographed image 5 acquired by the image acquisition unit 242; and an output unit 244 which outputs displacement information indicating a relation between a predetermined reference position of the target and the position specified by the target position specification unit 243. The target T has a pattern in which a first boundary line 51 extending in the first direction is formed by mutually-adjacent two regions, and a second boundary line 52 extending in the second direction intersecting the first direction is formed by mutually-adjacent other two regions. The target position specification unit 243 specifies an intersection point between the first boundary line and the second boundary line in the target in the photographed image as the position of the target in the photographed image.SELECTED DRAWING: Figure 1

The present application discloses a track spacing measuring device for rail transit, belonging to the field of track measurement technology, comprising a reset center coupler, a fixed rod and a sliding rod, wherein the fixed rod is fixedly connected to one end of the reset center coupler, the sliding rod extends into the reset center coupler and is slidably connected thereto, the fixed rod and the sliding rod ends are both fixedly connected with a track contact wheel group, wherein a laser rangefinder is installed on the track contact wheel group connected to the sliding rod, a reflector is installed on the track contact wheel group connected to the fixed rod, and a movable push handle is fixedly connected to the middle of the reset center coupler; during measurement, the track contact wheel groups on both sides of the present application are clamped on the track and roll along the track, at which time the laser rangefinder and the reflector work in combination to measure the spacing between the two, that is, the track spacing, and when the track spacing changes, the sliding rod can change the spacing of the track contact wheel groups on both sides by telescoping, and this measurement method is simple to operate and can measure continuously.

A precision measurement and tamping operation method for an operating conventional-speed railway without a control network. The method comprises the following steps: S100, laying a temporary reference station (1) and performing initial precision track measurement; S200, processing office-processed data; and S300, performing tamping operation and precision measurement. The temporary reference station (1) is laid offline along an operation route by means of precise single-point positioning; when precision track measurement is performed by using a track inspector (2), the temporary reference station (1) may serve as a reference station and cooperate with an onboard moving station (3) to perform dynamic post-processing calculation, such that accurate coordinates of the center line of the route are obtained; and when precision tamping is performed by using a tamping vehicle (4) equipped with a tamping vehicle locator (5), the temporary reference station (1) may serve as a main reference station to provide real-time dynamic positioning for the tamping vehicle (4), thereby realizing centimeter-level mileage positioning accuracy, and realizing autonomous synchronization with field mileage.

The invention discloses a digital laying construction method for subway prefabricated rubber spring floating slabs, and relates to the technical field of rail transit. Comprising the following steps: S1, construction preparation; s2, binding and pouring steel bars of a base; s3, measuring the flatness of the substrate; s4, digitally measuring and positioning a floating slab line; s5, roughly paving the floating slabs; s6, primarily measuring the jacking amount of the floating slab vibration isolator; s7, the floating slab is finely adjusted; S8, an adjusting base plate is installed, and limiting boss steel bars are bound and poured; and S9, steel rail fastener installation and rail fine adjustment. The digital laying technology is adopted for controlling all links of laying, the problems existing in floating slab track bed construction are effectively solved, accurate positioning of the floating slabs is achieved, the track precision is improved, the situation that due to floating slab laying precision deviation, a large amount of rework is caused, and the smoothness index cannot meet the requirement in the operation period is avoided, and the construction efficiency is improved. The construction period and cost are saved for construction, the maintenance cost within the guarantee period is reduced, and the operation and maintenance cost is reduced.

Systems and techniques for generating track geometry data (TGD) for railroad track analysis. In embodiments, rail profile data for each of the rails of a track may be obtained at regular intervals as a vehicle carrying the system traverses the track. The rail profile data may be validated, and reference points on the profiles of each of the rails corresponding to specific geometric features of the rails may be identified. The rail profile data may be filtered and processed to generate track geometry data. The track geometry data may include data for a plurality of data channels. The track geometry data may be transmitted to a backend system receives for further processing to determine rail defects, and to generate notifications and alerts based on the determined defects. The system utilizes machine learning algorithms and models for defect detection and validation.

The invention discloses an intelligent material distribution method for a ballastless track. The intelligent material distribution method comprises the following steps of feeding and storage, butt joint of a hopper and a pouring opening, discharging control and discharging stop control. According to the intelligent material distribution method for the ballastless track, operation is convenient, working condition data in the pouring process are monitored in real time, the pouring effect of the base plate and the track plate can be visually obtained through an information platform interface, it can be ensured that self-compacting concrete slurry completes extrusion and push type discharging in the flowing process through hopper simulation design and use, and the construction efficiency is improved. The pouring quality is improved, and the problem that the ballastless track pouring forming material distribution effect is poor is solved; in addition, interlocking control is carried out on feeding storage, butt joint of the hopper and the pouring opening, discharging control and discharging stop control, and the intelligent high-quality pouring construction production requirement can be met.

The invention relates to a walking device and a control method for the walking device to pass through a harmful space of a turnout. Two groups of rail supporting mechanisms; four guide wheel groups; the track detection module is arranged at the end of the walking framework and used for collecting track characteristic data, and the track detection module is a laser radar or an image sensor; the control system is used for performing data processing on the track characteristic data, identifying harmful space of the turnout and automatically controlling loading and unloading of the track supporting force of the track supporting mechanism; and the mileage sensor is used for measuring mileage data D of advancing of the walking framework. According to the walking device, by arranging the track detection module, the track supporting mechanism, the mileage sensor and the control system, when the walking device passes through a turnout section, track supporting force borne by the guide wheel set is automatically unloaded and loaded, full-automatic avoiding of harmful space is formed, the risk of manual operation is eliminated, and the working efficiency is improved. And the transverse stability of operation of the grinding trolley and the safety of equipment are guaranteed.

The invention discloses a construction method for grouting bags from bottom to top for a trapezoidal sleeper and a trapezoidal sleeper system.The construction process of the method includes the steps that a base is poured firstly, then the trapezoidal sleeper is laid, then the grouting bags are pasted and poured, grouting materials in the grouting bags are condensed and hardened, supporting is provided for the trapezoidal sleeper, and then side blocking tables are poured; the bottom of the longitudinal beam of the trapezoidal sleeper is prevented from being adhered to the concrete of the base, so that a wrapping sleeve is not required to be sleeved, the problems of voids, pitted surfaces and empty hoisting are avoided, and the phenomenon of'collision between hardness' of the sleeper bottom is more difficult to occur and the observation and maintenance of the sleeper bottom are easier due to the fact that the grouting bag adopts point-type support and the distance between the sleeper bottom and the base is farther.

The invention relates to a smooth downslope connection polishing method for a low-step defect of a steel rail, and belongs to the technical field of engineering. A laser array scanner of the grinding equipment scans the steel rail, scanning data are analyzed, and a low treading point of the steel rail is found; the low treading point is positioned, a grinding head of grinding equipment grinds from the low treading point to the two sides, and the low treading point is ground to meet the specification; the grinding equipment moves to one side for grinding, and single-side down slope detection is completed; and the two sides are polished along the slope. By means of the method, the downslope connection problem of the interface and the original rail surface after steel rail low step defect grinding can be solved, and the excessive abrupt problem of the connection position of the grinding area and the original rail surface is avoided.

A track monitoring system (and a method thereof) for mounting to a vehicle on a track comprising at least one rail is provided. The track monitoring system comprises a position and attitude measurement unit configured to determine a geographical position and attitude of the system during at least one pass of the vehicle on the track, a storage medium for storing track geometry data, a laser imaging and / or scanning unit configured to determine a position of the at least one rail relative to the track monitoring system, and a position of the at least one rail and surroundings relative to the track monitoring system during the at least one pass, a processor configured to determine, in the at least one pass, a first geographically referenced rail position based on the geographical position and attitude of the rail monitoring system and the position of the at least one rail relative to the system, determine, in the at least one pass, a second geographically referenced rail position based on the geographical position and attitude of the rail monitoring system and the position of the at least one rail and surroundings relative to the rail monitoring system, determine a third geographically referenced rail position based on the first and the second geographically referenced rail positions, and corresponding geographically referenced track geometry data, acquire, in a further pass, track geometry data associated with each position of the rail relative to the rail monitoring system, and the output of the position and attitude measurement unit, update, based on the third geographically referenced position of the rail, the track geometry data acquired in the further pass, and store updated track geometry data to the storage medium.

The invention discloses a transparent soil vibration table pile type reinforced embankment working property simulation method, and relates to the technical field of geotechnical engineering. In order to solve the problem of internal visualization of working properties of an existing pile-supported reinforced embankment, the following technical scheme is provided: S1, adjusting and fixing a slope simulator; s2, realizing transparency of a soil body material; s3, filling a transparent reinforced embankment; s4, installing and fixing observation equipment; and S5, simulating rainfall, earthquakes and train loads. The transparent soil vibration table pile type reinforced embankment working property simulation method and scheme have the remarkable beneficial effects in the aspects of internal visual simulation, controllability and reducibility, instrument operation simplicity and convenience, comprehensive benefits and the like.

The invention provides an improved high-temperature superconducting maglev traffic track board assembly which comprises a track board and an adjusting mechanism, and the adjusting mechanism can adjust the height of a track board body. A pair of permanent magnet rails is fixedly connected to the rail plate, a pair of emergency walking plates is fixedly connected to the top face of the rail plate, a traction rail is fixedly connected to the top face of the rail plate, a linear motor can be installed on the traction rail, and a set of large pedestals are arranged below the rail plate body. According to the improved high-temperature superconductive maglev traffic track board assembly, whether the track board body is high in smoothness or not is measured by means of the ball, if the track board body is inclined, the ball slides in the sliding groove and makes contact with the contact, and then the alarm gives an alarm; and then the height of the track board body can be adjusted through the adjusting mechanism, so that the high smoothness of the track board body after installation is improved, and the track board can be widely applied to the technical field of traffic tracks.

The invention discloses a novel portable high-precision railway switch rail dislocation measuring instrument, which belongs to the technical field of rail measurement, and comprises a portable mainframe box, and the side surface of the mainframe box is provided with a parallel camera and an angle laser head for measurement; a magnetic attraction fixing seat matched with a railway track in shape is arranged below the mainframe box, a notch matched with the railway track is formed in the side face of the magnetic attraction fixing seat, a plurality of magnetic attraction blocks are installed in the inner wall of the notch in an embedded mode, a storage groove is formed in the side face of the magnetic attraction fixing seat, and an angle adjusting connecting piece is arranged in an inner cavity of the storage groove. An E-shaped clamp is embedded in the side face of the angle adjusting connecting piece, a sliding groove is formed in the bottom end of the mainframe box, a front-back movement adjusting sliding rail is arranged in the sliding groove in a sliding mode, and a threaded channel is formed in the bottom end of the magnetic attraction fixing base. The novel portable high-precision railway switch rail dislocation measuring instrument has the advantages of being easy and convenient to operate, high in measuring speed, wide in application range and the like, and the efficiency and quality of railway measurement and maintenance work can be greatly improved.