Contact rail, induction plate and rail static geometric parameter comprehensive inspection tester and inspection method

Abstract

The invention belongs to the technical field of track detection devices, and particularly relates to a contact rail, induction plate and track static geometric parameter comprehensive inspection tester and an inspection method.The contact rail, induction plate and track static geometric parameter comprehensive inspection tester comprises a walking frame, and a track inspection assembly, a contact rail measurement assembly and an induction plate measurement assembly are arranged on the walking frame; static geometric parameters, contact rail parameters and induction plate parameters of the track can be measured at the same time, the walking frame is pushed on the track, three different types of geometric parameters are continuously measured in the pushing process, the number of on-track measuring personnel is reduced, the labor intensity is reduced, and the working efficiency is improved. The contact rail measurement assembly and the induction plate measurement assembly in the comprehensive inspection tester are detachably assembled and can be selectively used according to field conditions, and the use mode is flexible. The comprehensive inspection tester is provided with the lower contact type contact rail measurement assembly and the upper contact type contact rail measurement assembly, and can adapt to measurement of geometric parameters of contact rails in different power supply modes.

Description

Technical Field

[0001] The invention belongs to the technical field of track detection devices, and in particular relates to a contact rail, an induction plate and a track static geometric parameter comprehensive inspection instrument and an inspection method. Background Art

[0002] In order to ensure the safety of rail transportation, it is necessary to inspect rail equipment and promptly discover and deal with equipment defects. The inspection of rail lines is to measure various geometric parameters. The geometric parameters of subway tracks include the inspection of track static parameters, the inspection of contact rail geometric parameters, and the inspection of sensor plate geometric parameters.

[0003] At present, the detection of track static parameters is sometimes carried out through manual track gauge detection, and sometimes through automatic detection by track inspection instruments. Among them, the track inspection instrument used to detect track static parameters can be pushed on the track. The track inspection instrument uses gyroscopes, inclination sensors, linear displacement sensors, rotary encoders, etc. to complete the measurement of track geometric parameters such as track gauge, level, height, direction, and distortion (triangular pits). When in use, the track inspection instrument is placed on the track and is pushed manually (at about 5km / h) to complete the measurement of track geometric parameters.

[0004] However, the detection of contact rail and induction plate geometric parameters is mainly carried out with mechanical special measuring rulers. The manual measurement of geometric parameters is to measure once at a certain distance on the line, and the operation requires continuous bending over, which is labor-intensive and inefficient. In addition, many measurements are carried out at night when the subway is closed. The light is poor at night, and due to fatigue, the measurement personnel are prone to misreading the data, resulting in human errors. At the same time, the accuracy of the mechanical measuring instrument itself is not high. Summary of the invention

[0005] The present invention aims to provide a contact rail, a sensor plate and a track static geometric parameter comprehensive inspection instrument and an inspection method, so as to realize comprehensive inspection of various geometric parameters of the track through the contact rail, the sensor plate and the track static geometric parameter comprehensive inspection instrument and improve the inspection efficiency.

[0006] To achieve the above objectives, the present invention adopts the following technical solutions:

[0007] Provided is a contact rail, induction plate and track static geometric parameter comprehensive inspection instrument, including:

[0008] A walking frame, the walking frame is used to be placed on the track for walking;

[0009] A track inspection assembly arranged on the traveling frame, the track inspection assembly comprising a linear displacement sensor for measuring track gauge, an ultrasonic sensor for identifying sleepers, an inclination sensor for measuring track superelevation, a gyroscope for measuring track height and direction, a rotary encoder for measuring mileage, and a data acquisition circuit board, the linear displacement sensor, ultrasonic sensor, inclination sensor, gyroscope, and rotary encoder are all connected to the data acquisition circuit board by signal;

[0010] The contact rail measuring assembly is divided into two types: a lower contact rail measuring assembly for lower contact measurement and an upper contact rail measuring assembly for upper contact measurement, which are respectively used for measuring the lower contact contact rail and the upper contact contact rail. The lower contact rail measuring assembly and the upper contact rail measuring assembly both include a first measuring arm mounted on the traveling frame, and a first laser sensor is provided on the first measuring arm. The first laser sensor is used for scanning the profile of the contact rail surface and measuring the distance from each point to the first laser sensor.

[0011] The induction plate measuring assembly comprises a second measuring arm mounted at a middle position on the walking frame, and a second laser sensor is arranged on the second measuring arm, and the second laser sensor is used to scan the induction plate and measure the distance from each point to the second laser sensor;

[0012] A host computer is arranged on the walking frame, and the data acquisition circuit board, the first laser sensor and the second laser sensor are respectively connected to the host computer by signals;

[0013] A battery module is used to provide power.

[0014] Preferably, the walking frame includes a cross beam, a longitudinal beam is provided on one side of the cross beam, the cross beam and the longitudinal beam form a T-shaped structure, a first running wheel for running on a track is provided at the bottom of one end of the cross beam away from the longitudinal beam, and a second running wheel and a third running wheel for running on a track are respectively installed at the bottom of the front and rear ends of the longitudinal beam.

[0015] Preferably, a first measuring wheel for traveling along the inner side of the track is provided at the bottom of the cross beam, located on the inner side of the first running wheel; a second measuring wheel and a third measuring wheel for traveling along the inner side of the track are provided at the bottom of the front and rear ends of the longitudinal beam, located on the inner sides of the second running wheel and the third running wheel respectively; the first measuring wheel is installed at the bottom of the running frame through a retracting frame, and a switch clutch for operating the retracting frame is provided in the cross beam.

[0016] Preferably, the rotary encoder is installed at the third running wheel and is used to send a pulse signal to the data acquisition circuit board to complete the mileage measurement.

[0017] Preferably, the first measuring arm of the lower contact rail measuring assembly is arranged obliquely downward, and the first laser sensor of the lower contact rail measuring assembly is installed at the end of the first measuring arm thereof, and the optical center angle of the first laser sensor thereof is 35°;

[0018] The first measuring arm of the upper contact rail measuring assembly is arranged to tilt upward obliquely, and the first laser sensor of the upper contact rail measuring assembly is installed at the end of the first measuring arm thereof, and the optical center angle of the first laser sensor thereof is 45°.

[0019] Preferably, the first measuring arm is detachably mounted on one side of the longitudinal beam of the traveling frame via a first connecting base; the second measuring arm is detachably mounted on the middle part of the transverse beam of the traveling frame via a second connecting base; a push rod is provided on the traveling frame, a support plate is provided on the push rod, and the host computer is arranged on the support plate.

[0020] Preferably, handrails are respectively provided on both sides of the walking frame and on the rear side of the support plate.

[0021] Preferably, a gyroscope and a data acquisition box are provided on the walking frame, and the gyroscope and the data acquisition circuit board are arranged in the gyroscope and the data acquisition box.

[0022] Preferably, the battery module includes a first lithium battery module, a second lithium battery module and a third lithium battery module, the first lithium battery module and the second lithium battery module are respectively arranged on the first measuring arm and the second measuring arm, and the third lithium battery module is arranged in the gyroscope and the data acquisition box.

[0023] The present invention also provides a subway track comprehensive inspection method, which adopts the contact rail, induction plate and track static geometric parameter comprehensive inspection instrument as described in any of the above items, and comprises:

[0024] Walking on the track by means of the walking frame;

[0025] The track inspection assembly detects track geometric parameters, including: measuring the track gauge through the linear displacement sensor; identifying the sleeper through the ultrasonic sensor; measuring the track superelevation through the inclination sensor; measuring the track height and direction through the gyroscope; measuring the mileage through the rotary encoder; the output signals of the linear displacement sensor, ultrasonic sensor, inclination sensor, gyroscope, and rotary encoder are all transmitted to the data acquisition circuit board, and the data acquisition circuit board pre-processes all the sampled data and uploads them to the host computer;

[0026] Detecting the contact rail geometric parameters by the contact rail measuring assembly includes: scanning the contact rail surface profile by the first laser sensor and measuring the first distance data from each point to the first laser sensor, uploading the first distance data to the host computer, and calculating the contact rail guide height and pull-out value by the host computer based on the first distance data;

[0027] The geometric parameters of the sensing plate are detected by the sensing plate measuring component, including: the second laser sensor scans the sensing plate and measures the second distance data from each point to the second laser sensor, the second distance data is uploaded to the host computer, and the host computer calculates the vertical distance between the top surface of the sensing plate and the top surface of the adjacent track based on the second distance data, and calculates the gap between the ends of two adjacent sensing plates.

[0028] Compared with the prior art, the beneficial effects of the present invention are as follows: (1) The contact rail, induction plate and track static geometric parameter comprehensive inspection instrument comprises a traveling frame, on which a track inspection component, a contact rail measurement component and an induction plate measurement component are arranged, which can simultaneously measure the track static geometric parameters, contact rail parameters and induction plate parameters. The traveling frame is pushed on the track, and three different types of geometric parameters are continuously measured during the pushing process, which reduces the number of on-track measurement personnel, reduces labor intensity and improves work efficiency. (2) The contact rail measurement component and the induction plate measurement component in the comprehensive inspection instrument are detachable assemblies, which can be selected and used according to the on-site conditions, and the use method is flexible. (3) The comprehensive inspection instrument is provided with a lower contact contact rail measurement component and an upper contact contact rail measurement component, which can adapt to the measurement of geometric parameters of contact rails with different power supply modes; (4) The comprehensive inspection instrument adopts a laser sensor to realize non-contact measurement of the contact rail and the induction plate, and has high measurement accuracy. (5) The data measured by each sensor of the comprehensive inspection instrument are uniformly transmitted to the host computer, and the host computer can uniformly issue a detection chart, which is convenient and efficient for checking the detection results. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0030] Figure 1 The present invention is a schematic structural diagram of an embodiment of a contact rail, a sensor plate and a track static geometric parameter comprehensive inspection device. The inspection device is suitable for the inspection of subway lines with lower contact contact rails.

[0031] Figure 2 It is a top view of an embodiment of the contact rail, induction plate and track static geometric parameter comprehensive inspection instrument of the present invention.

[0032] Figure 3It is a three-dimensional structural schematic diagram of some components in an embodiment of the contact rail, induction plate and track static geometric parameter comprehensive inspection instrument of the present invention.

[0033] Figure 4 It is a bottom view of some components of an embodiment of the contact rail, induction plate and track static geometric parameter comprehensive inspection instrument of the present invention.

[0034] Figure 5 The present invention is a schematic structural diagram of an embodiment of a contact rail, a sensor plate and a track static geometric parameter comprehensive inspection device. The inspection device is suitable for the inspection of subway lines with upper contact type contact rails.

[0035] Figure 6 The schematic diagram is a schematic diagram of measuring the geometric parameters of the lower contact type contact rail in one embodiment of the contact rail, induction plate and track static geometric parameter comprehensive inspection instrument of the present invention.

[0036] Figure 7 The schematic diagram is a schematic diagram of measuring the geometric parameters of the upper contact type contact rail in one embodiment of the contact rail, induction plate and track static geometric parameter comprehensive inspection instrument of the present invention.

[0037] Figure 8 The schematic diagram is a schematic diagram of measuring the gap between the ends of adjacent induction plates in one embodiment of the comprehensive inspection instrument for static geometric parameters of contact rails, induction plates and tracks of the present invention.

[0038] Fig. 9 The schematic diagram is a schematic diagram of measuring the vertical distance between the top surface of the induction plate and the top surface of the adjacent track in one embodiment of the contact rail, induction plate and track static geometric parameter comprehensive inspection instrument of the present invention.

[0039] Fig.10 Schematic diagram of three different installation methods of contact rails, Fig.10 -(a) is a schematic diagram of contact installation on the contact rail, Fig.10 -(b) is a schematic diagram of the contact installation under the contact rail. Fig.10 -(c) is a schematic diagram of the contact rail side contact installation.

[0040] In the figure, the reference numerals are indicated as: cross beam 1, longitudinal beam 2, push rod 3, laptop computer 4, gyroscope and data acquisition box 5, first laser sensor 6 (first laser sensor 36), first measuring arm 7 (first measuring arm 37), first lithium battery module 8, first connecting base 9, second laser sensor 10, second measuring arm 11, second lithium battery module 12, second connecting base 13, first running wheel 14, first measuring wheel 15, third running wheel 16, second measuring wheel 27, third measuring wheel 17, clutch handle 18, linear displacement sensor 19, second running wheel 20, rotary encoder 22. DETAILED DESCRIPTION

[0041] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0042] In one embodiment, a contact rail, a sensing plate and a track static geometric parameter comprehensive inspection instrument is provided, such as Figure 1-4 As shown, the contact rail, induction plate and track static geometric parameter comprehensive inspection instrument includes a traveling frame, which is used to be placed on the track (running rail) for walking, and a track inspection component, a contact rail measurement component, a sensor plate measurement component, and a host computer are arranged on the traveling frame, wherein the track inspection component is used to detect the geometric parameters of the track, the contact rail measurement component is used to detect the geometric parameters of the contact rail, the sensor plate measurement component is used to detect the geometric parameters of the sensor plate, and the host computer is used to receive each geometric parameter and generate a corresponding data chart. The contact rail, induction plate and track static geometric parameter comprehensive inspection instrument also includes a battery module for providing power to related components.

[0043] Combination Figure 2 As shown, the track inspection assembly includes a linear displacement sensor 19 for measuring the track gauge, an ultrasonic sensor for identifying the sleeper, an inclination sensor for measuring the track superelevation, a gyroscope for measuring the track height and direction, and a data acquisition circuit board, wherein the ultrasonic sensor and the inclination sensor are installed on the lower side of the walking frame. Figure 2 The ultrasonic sensor and the inclination sensor are installed at the lower side of the walking frame. Figure 2 In the present embodiment, a gyroscope and a data acquisition box 5 are also provided on the walking frame, and a gyroscope and a data acquisition circuit board are arranged in the gyroscope and the data acquisition box 5. The gyroscope includes two high-precision fiber optic gyroscopes installed in the gyroscope and the data acquisition box 5. The linear displacement sensor 19, the ultrasonic sensor, the inclination sensor, the rotary encoder 22, and the gyroscope are all connected to the data acquisition circuit board signal. The data output by each sensor is uniformly collected by the data acquisition circuit board and uploaded to the host computer. By setting the gyroscope and the data acquisition box 5, the two main electrical components, the gyroscope and the data acquisition circuit board, are centrally installed in the box and can be disassembled as a whole, which is convenient for maintenance and periodic calibration.

[0044] In this embodiment, the host computer is a laptop computer 4, and the data acquisition circuit board is connected to the laptop computer 4 by wired or wireless signal connection. For example, the data acquisition circuit board completes the data acquisition of all track geometry parameter measurement sensors and uploads the data to the host computer laptop computer 4 through Bluetooth or serial port RS232 interface after preprocessing. The data processing software in the laptop computer 4 completes the calculation and storage of various geometric parameters and outputs various reports.

[0045] Combination Figure 1 As shown, the contact rail measuring assembly includes a first measuring arm 7 installed on a traveling frame, on which a first laser sensor 6 is provided. The first laser sensor 6 is used to scan the contact rail surface profile and measure the distance from each point to the first laser sensor 6. The first laser sensor 6 uploads the measured data to the laptop computer 4 via a network cable.

[0046] Combination Figure 1 As shown, the induction board measurement assembly includes a second measuring arm 11 installed in the middle position of the walking frame, and a second laser sensor 10 is provided on the second measuring arm 11. The second laser sensor 10 is used to scan the induction board and measure the distance from each point to the second laser sensor 10. The second laser sensor 10 uploads the measured data to the laptop computer 4 via a network cable.

[0047] The induction plate here is an aluminum alloy plate installed between two rails along the subway line. The linear motor used in urban rail transit vehicles is a linear induction motor with a stator. Its structure is equivalent to cutting a rotating motor radially and unfolding it into a straight line. The stator (primary coil) is set on the bogie at the bottom of the vehicle, and the rotor (secondary coil) is the induction plate, which is set in the middle of the line. When the stator installed on the vehicle bogie generates a moving magnetic field with the induction plate laid in the middle of the line when powered on, and generates traction through the interaction (attraction, repulsion) between magnetic forces. By changing the direction of the magnetic field, the vehicle can be operated and braked. Therefore, the induction plate is one of the key devices in the urban rail transit linear motor system.

[0048] The geometric parameters measured for the induction plate include the gap between the ends of two adjacent induction plates and the vertical distance between the top surface of the induction plate and the top surface of the adjacent track. The data measured by the second laser sensor 10 is uploaded to the laptop computer 4 through a network cable, and the data processing software calculates the induction plate gap and horizontal value (the vertical distance between the top surface of the induction plate and the top surface of the adjacent running rail) according to the mathematical model.

[0049] The principle of measuring the interval between the two sensing plates is as follows Figure 8 As shown:

[0050] The second laser sensor is installed in the middle of the traveling frame. Its scanning line cd forms an angle β with the horizontal direction. The angle β is 12.597 degrees. When passing through the joint of the sensing plate A and the sensing plate B, its scanning line intersects at points m and n respectively. The length L of the line segment mn can be obtained by calculation. Therefore, the gap h between the sensing plate A and the sensing plate B is calculated as follows:

[0051] h=L×sianβ.

[0052] The measurement principle of the sensor plate level is as follows Fig. 9 As shown:

[0053] The second laser sensor is installed 700mm above the center of the walking frame. The scanning range of the second laser sensor covers the width of the entire sensing plate, that is, it can measure the distance from each point on the scanning line to the second laser sensor. Assuming that the distance from point A of the sensing plate to the second structure sensor is h, the horizontal value c of the sensing plate is:

[0054] c=hb

[0055] Where h is measured by the second laser sensor, b is the distance from the sensor to the rail plane, and the sensor remains fixed after installation.

[0056] Further, in another embodiment, Figure 1-4 As shown, the traveling frame in the contact rail, induction plate and track static geometric parameter comprehensive inspection instrument includes a crossbeam 1, and a longitudinal beam 2 is arranged on the left side of the crossbeam 1. The crossbeam 1 and the longitudinal beam 2 form a T-shaped structure, which can maintain the stability of walking on the track. The traveling frame of the T-shaped structure is not disassembled, so as to avoid measurement errors caused by repeated disassembly and assembly, reduce the assembly time on the track, and improve work efficiency.

[0057] The main parts of the crossbeam 1 and the longitudinal beam 2 are made of I-shaped alloy material, and weight-reducing holes are arranged on the I-shaped alloy material. They have the characteristics of high structural strength, durability and light weight. A first running wheel 14 for walking on the track is provided at the bottom of the end of the crossbeam 1 away from the longitudinal beam 2, and a second running wheel 20 and a third running wheel 16 for walking on the track are respectively provided at the bottom of the front and rear ends of the longitudinal beam 2. The first running wheel 14, the second running wheel 20 and the third running wheel 16 are all cylindrical rollers, and the positions of the first running wheel 14, the second running wheel 20 and the third running wheel 16 at the bottom of the running frame are respectively matched with the track spacing.

[0058] Further, in another embodiment, Figure 1-4As shown, the contact rail, induction plate and track static geometric parameter comprehensive inspection instrument is provided with a first measuring wheel 15 for running along the inner side of the track at the bottom of the crossbeam 1, located inside the first running wheel 14, and a second measuring wheel 27 and a third measuring wheel 17 for running along the inner side of the track are provided at the bottom of the front and rear ends of the longitudinal beam 2, located inside the second running wheel 20 and the third running wheel 16, respectively. The first measuring wheel 15 is close to the track gauge measuring point 16 mm vertically downward from the top surface of the rail under the action of the spring force, and the change of the track gauge drives the change of the output of the linear displacement sensor. The measuring wheel is installed at the bottom of the running frame through a bracket, and a turnout clutch for tightening the measuring wheel bracket is provided in the crossbeam 1. The function of the turnout clutch is to pull the clutch handle to make the first measuring wheel 15 on the crossbeam leave the track when the comprehensive inspection instrument passes the turnout, so that the running wheel at the bottom of the running frame can pass the turnout smoothly. Among them, by operating the clutch handle 18 of the turnout clutch, the first measuring wheel 15 can be folded or lowered. When the traveling frame is running normally on the track, the first measuring wheel 15 is in a lowered state, running close to the rails. When encountering a turnout, the first measuring wheel 15 is in a folded state.

[0059] Further, in another embodiment, Figure 2 As shown, a rotary encoder 22 is installed at the third running wheel 16 of the contact rail, induction plate and track static geometric parameter comprehensive inspection instrument. When the third running wheel 16 rotates one circle, the rotary encoder 22 senses and outputs 1000 pulse signals. The rotary encoder 22 sends the pulse signal to the data acquisition circuit board to complete the mileage measurement, and the data acquisition circuit board uploads the measured mileage to the laptop computer 4.

[0060] Further, in another embodiment, Figure 1 As shown, the contact rail measuring component in the contact rail, induction plate and track static geometric parameter comprehensive inspection instrument is a lower contact rail measuring component, which is used to detect the geometric parameters of the lower contact type contact rail, wherein the first measuring arm 7 is tilted downward, the first laser sensor 6 is installed at the end of the first measuring arm 7, and the optical center angle of the first laser sensor 6 is 35°. Fig.10 As shown in the figure, the contact rail is a special power supply device laid along the subway line and parallel to the track for supplying electric energy to the electric train set. It is also called the third rail. The subway vehicle obtains electricity through the contact between the collector shoe and the contact rail. According to the different ways in which the collector shoe draws current from the contact rail, the installation methods of the contact rail can be divided into three types: upper contact, lower contact, and side contact. Fig.10 middle, Fig.10 -(a) is a schematic diagram of contact installation on the contact rail, Fig.10 -(b) is a schematic diagram of the contact installation under the contact rail. Fig.10-(c) is a schematic diagram of the contact rail side contact installation. Since the contact surface of the lower contact type contact rail is located at the lower side, the lower contact rail measurement assembly here sets the first measuring arm 7 to be tilted downward, so that the first laser sensor 6 can scan the contact surface at the bottom of the contact rail obliquely upward when it is installed at the end of the first measuring arm 7. The optical center angle of the first laser sensor 6 mentioned above is 35°, which means that the installation angle of the first laser sensor 6 is 35°, that is, the angle between the scanning line of the first laser sensor 6 and the horizontal plane is 35°, which is set to avoid the trackside equipment installed on the roadbed.

[0061] Combination Figure 6 As shown, the measuring principle of the first laser sensor 6 in the lower contact rail measuring assembly is as follows:

[0062] The scanning line angle of the first laser sensor 6 is 35 degrees to the horizontal plane. The first laser sensor scans the contour of the contact rail and uploads the data to the laptop computer 4 through the network cable. The data processing software in the laptop computer 4 calculates the distance d through the mathematical model, and the guide height h (the vertical distance between the top surface of the contact rail and the top surface of the adjacent running rail) is calculated as follows:

[0063] h=d×sin35-s=0.574×ds

[0064] Where s is the distance from the first laser sensor to the top surface of the running rail, which is a fixed value after the measuring component is assembled.

[0065] The pull-out value a (the shortest horizontal distance from the center of the contact rail to the inner side of the adjacent running rail) is calculated as follows:

[0066] a=b+c+g

[0067] b is a fixed value, which is determined after the assembly is completed and remains unchanged. g is the distance from the center of the contact rail to the optical center line of the first laser sensor, which can be obtained by analyzing the laser scanning line.

[0068] c=d×cos35=0.819×d

[0069] Therefore, the pull-out value a=0.819×d+b+g.

[0070] Further, in another embodiment, Figure 5As shown, the contact rail measuring assembly in the contact rail, sensor plate and track static geometric parameter comprehensive inspection instrument is an upper contact rail measuring assembly, which is used to detect the geometric parameters of the upper contact type contact rail, wherein the first measuring arm 37 is arranged to be tilted upward, the first laser sensor 36 is installed at the end of the first measuring arm 37, and the optical center angle of the first laser sensor 36 is 45°. Since the contact surface of the upper contact type contact rail is located on the upper side, the upper contact rail measuring assembly here sets the first measuring arm 37 to be tilted upward, so that the first laser sensor 36 can scan the contact surface located at the top of the contact rail obliquely upward when it is installed at the end of the first measuring arm 37. Similarly, the optical center angle of the first laser sensor 36 mentioned above is 45°, which means that the installation angle of the first laser sensor 36 is 45°, that is, the angle between the scanning line of the first laser sensor 36 and the horizontal plane is 45°.

[0071] Combination Figure 7 As shown, the measurement principle of the first laser sensor 36 in the upper contact rail measurement assembly is as follows:

[0072] The angle of the scanning line of the first laser sensor 36 is 45 degrees to the horizontal plane. The first laser sensor scans the contour of the contact rail and uploads the data to the laptop computer 4 through the network cable. The data processing software calculates the distance d through the mathematical model. The guide height h (the vertical distance between the top surface of the contact rail and the top surface of the adjacent running rail) is calculated as follows:

[0073] h=sd×cos45=s-0.707×d

[0074] Where s is the distance from the first laser sensor to the top surface of the running rail, which is a fixed value after the measuring component is assembled.

[0075] The pull-out value a (the shortest horizontal distance from the center of the contact rail to the inner side of the adjacent running rail) is calculated as follows:

[0076] a=b+c+g

[0077] b is a fixed value, which is determined after the assembly is completed and remains unchanged. g is the distance from the center of the contact rail to the optical center line of the first laser sensor, which can be obtained by analyzing the laser scanning line.

[0078] c=d×sin45=0.707×d

[0079] Therefore, the pull-out value a=0.707×d+b+g.

[0080] Further, in another embodiment, Figure 1-2As shown, the first measuring arm 7 of the contact rail, induction plate and track static geometric parameter comprehensive inspection instrument is detachably assembled on the left side of the traveling frame through the first connecting base 9, and a screw hole is provided in the middle of the left side of the longitudinal beam 2 of the traveling frame. The first connecting base 9 is connected to the middle of the left side of the longitudinal beam 2 by bolts, so as to decide whether to install the contact rail measurement assembly according to the use requirements. Similarly, the second measuring arm 11 of the contact rail, induction plate and track static geometric parameter comprehensive inspection instrument is detachably assembled on the traveling frame through the second connecting base 13, and a screw hole is provided in the middle of the crossbeam 1 of the traveling frame. The second connecting base 13 is connected to the upper side of the middle part of the crossbeam 1 by bolts, so as to decide whether to install the induction plate measurement assembly according to the use requirements. In addition, a push rod 3 is also provided on the traveling frame, and a support plate is provided on the push rod 3. The laptop 4 is arranged on the support plate. The push rod 3 is inclined. In addition to supporting the laptop 4, it is also used to facilitate pushing the traveling frame to walk along the track. The bottom of the push rod 3 is also detachably installed on the crossbeam 1 by bolts, and the installation direction of the push rod 3 can be adjusted, which is convenient for pushing.

[0081] Further, in another embodiment, Figure 1-4 As shown, the contact rail, induction plate and track static geometric parameter comprehensive inspection instrument are provided with handrails on both sides of the traveling frame and the rear side of the support plate, wherein a handrail is provided at the front and rear of the left side of the longitudinal beam 2, and a handrail is provided at the bottom of the right side of the cross beam, so as to move the traveling frame. The handrail provided at the rear side of the support plate at the top of the push rod 3 is for the convenience of pushing the traveling frame.

[0082] Further, in another embodiment, Figure 1 As shown, the battery module of the contact rail, induction plate and track static geometric parameter comprehensive inspection instrument includes a first lithium battery module 8, a second lithium battery module 12, and a third lithium battery module. The first lithium battery module 8 and the second lithium battery module 12 are respectively arranged on the first measuring arm 7 and the second measuring arm 11. The first lithium battery module 8 is mainly used to power the first laser sensor 6 in the contact rail measurement component, and the second lithium battery module 12 is mainly used to power the second laser sensor 10 in the induction plate measurement component. The third lithium battery module is arranged in the gyroscope and data acquisition box 5. The third lithium battery module alone in the gyroscope and data acquisition box 5 supplies power to all sensors and the gyroscope and data acquisition board. That is to say, the three modules of contact rail measurement, induction plate measurement and track geometric parameter measurement are independently powered, which is convenient for disassembly and assembly for separate use.

[0083] Based on the above embodiments, the contact rail, induction plate and track static geometric parameter comprehensive inspection instrument has the following advantages: it can simultaneously measure the track static geometric parameters, contact rail parameters and induction plate parameters, and is pushed on the track by a walking frame, and continuous measurement is performed during the pushing process, which reduces the number of on-track measurement personnel, reduces labor intensity, and improves work efficiency. The contact rail measurement component and the induction plate measurement component are detachable assemblies, which can be selected and used according to the on-site conditions, and the usage method is flexible. It is equipped with a lower contact contact rail measurement component and an upper contact contact rail measurement component, which can adapt to the measurement of geometric parameters of contact rails with different power supply methods. The comprehensive inspection instrument uses a laser sensor to realize non-contact measurement of the contact rail and the induction plate, and has high measurement accuracy.

[0084] In one embodiment, a subway track comprehensive inspection method is provided, which uses the contact rail, the induction plate and the track static geometric parameter comprehensive inspection instrument in the previous embodiment, and includes the following steps:

[0085] (1) Walking on the track via a walking frame.

[0086] (2) Detecting track geometric parameters through the track inspection component, including: measuring the track gauge through the linear displacement sensor 19; identifying the sleeper through the ultrasonic sensor; measuring the track superelevation through the inclination sensor; measuring the track height and direction through the gyroscope; and measuring the mileage through the rotary encoder 22. The data measured by the linear displacement sensor 19, the ultrasonic sensor, the inclination sensor, the rotary encoder 22, and the gyroscope are all transmitted to the data acquisition circuit board, and the data acquisition circuit board pre-processes all the data and uploads it to the host computer, which is the laptop computer 4. The linear displacement sensor 19 is installed at the bottom of the beam 1 and is located between the tracks on both sides. It can measure the track gauge and determine whether the track gauge is within the specified range. The ultrasonic sensor is used to identify the sleeper. Measuring the track superelevation means measuring the height difference between the top surface of the outer rail and the top surface of the inner rail in the two tracks through the inclination sensor. The track height and direction are measured by the gyroscope.

[0087] (3) Detecting the geometric parameters of the contact rail by means of the contact rail measuring assembly, including: scanning the profile of the contact rail surface by means of a first laser sensor and measuring the first distance data from each point to the first laser sensor, uploading the first distance data to a host computer, and calculating the lead height and pull-out value of the contact rail by means of the host computer based on the first distance data. The lead height of the contact rail mentioned here refers to the vertical distance between the top surface of the contact rail and the top surface of the adjacent running rail, and the pull-out value refers to the shortest horizontal distance between the center of the contact rail and the inner side of the adjacent running rail.

[0088] (4) Detecting the geometric parameters of the sensing plate through the sensing plate measurement component, including: scanning the sensing plate by a second laser sensor and measuring the second distance data from each point to the second laser sensor, uploading the second distance data to the host computer, and calculating the vertical distance between the top surface of the sensing plate and the top surface of the adjacent track by the host computer based on the second distance data, and calculating the gap between the ends of two adjacent sensing plates.

[0089] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0090] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A comprehensive inspection instrument for static geometric parameters of contact rails, induction plates and tracks, characterized in that: include: A walking frame, the walking frame is used to be placed on the track for walking; A track inspection assembly arranged on the traveling frame, the track inspection assembly comprising a linear displacement sensor for measuring track gauge, an ultrasonic sensor for identifying sleepers, an inclination sensor for measuring track superelevation, a gyroscope for measuring track height and direction, a rotary encoder for measuring mileage, and a data acquisition circuit board, the linear displacement sensor, ultrasonic sensor, inclination sensor, gyroscope, and rotary encoder are all connected to the data acquisition circuit board by signal; The contact rail measuring assembly is divided into two types: a lower contact rail measuring assembly for lower contact measurement and an upper contact rail measuring assembly for upper contact measurement, which are respectively used for measuring the lower contact contact rail and the upper contact contact rail. The lower contact rail measuring assembly and the upper contact rail measuring assembly both include a first measuring arm mounted on the traveling frame, and a first laser sensor is provided on the first measuring arm. The first laser sensor is used for scanning the profile of the contact rail surface and measuring the distance from each point to the first laser sensor. The induction plate measuring assembly comprises a second measuring arm mounted at a middle position on the walking frame, and a second laser sensor is arranged on the second measuring arm, and the second laser sensor is used to scan the induction plate and measure the distance from each point to the second laser sensor; A host computer is arranged on the walking frame, and the data acquisition circuit board, the first laser sensor and the second laser sensor are respectively connected to the host computer by signals; A battery module is used to provide power.

2. The contact rail, induction plate and track static geometric parameter comprehensive inspection instrument according to claim 1 is characterized by: The walking frame includes a crossbeam, a longitudinal beam is arranged on one side of the crossbeam, and the crossbeam and the longitudinal beam form a T-shaped structure. A first running wheel for running on a track is arranged at the bottom of one end of the crossbeam away from the longitudinal beam, and a second running wheel and a third running wheel for running on the track are respectively installed at the bottom of the front and rear ends of the longitudinal beam.

3. The contact rail, induction plate and track static geometric parameter comprehensive inspection instrument according to claim 2 is characterized by: A first measuring wheel for traveling along the inner side of the track is provided at the bottom of the crossbeam, on the inner side of the first running wheel; a second measuring wheel and a third measuring wheel for traveling along the inner side of the track are provided at the bottoms of the front and rear ends of the longitudinal beam, on the inner sides of the second running wheel and the third running wheel respectively; the first measuring wheel is installed at the bottom of the running frame through a retracting frame, and a switch clutch for operating the retracting frame is provided in the crossbeam.

4. The contact rail, induction plate and track static geometric parameter comprehensive inspection instrument according to claim 2 is characterized by: The rotary encoder is installed at the third running wheel and is used to send a pulse signal to the data acquisition circuit board to complete the mileage measurement.

5. The contact rail, induction plate and track static geometric parameter comprehensive inspection instrument according to claim 1 is characterized in that: The first measuring arm of the lower contact rail measuring assembly is arranged obliquely downward, and the first laser sensor of the lower contact rail measuring assembly is installed at the end of the first measuring arm thereof, and the optical center angle of the first laser sensor thereof is 35°; The first measuring arm of the upper contact rail measuring assembly is arranged to tilt upward obliquely, and the first laser sensor of the upper contact rail measuring assembly is installed at the end of the first measuring arm thereof, and the optical center angle of the first laser sensor thereof is 45°.

6. The contact rail, induction plate and track static geometric parameter comprehensive inspection instrument according to claim 2 is characterized by: The first measuring arm is detachably mounted on one side of the longitudinal beam of the traveling frame via a first connecting base; the second measuring arm is detachably mounted on the middle part of the transverse beam of the traveling frame via a second connecting base; a push rod is provided on the traveling frame, a support plate is provided on the push rod, and the host computer is arranged on the support plate.

7. The contact rail, induction plate and track static geometric parameter comprehensive inspection instrument according to claim 6 is characterized by: Handrails are respectively arranged on both sides of the walking frame and the rear side of the supporting plate.

8. The contact rail, induction plate and track static geometric parameter comprehensive inspection instrument according to claim 1 is characterized by: A gyroscope and a data acquisition box are arranged on the walking frame, and the gyroscope and the data acquisition circuit board are arranged in the gyroscope and the data acquisition box.

9. The contact rail, induction plate and track static geometric parameter comprehensive inspection instrument according to claim 8, characterized in that: The battery module includes a first lithium battery module, a second lithium battery module and a third lithium battery module. The first lithium battery module and the second lithium battery module are respectively arranged on the first measuring arm and the second measuring arm, and the third lithium battery module is arranged in the gyroscope and the data acquisition box.

10. A comprehensive inspection method for subway tracks, characterized in that: The method adopts the contact rail, induction plate and track static geometric parameter comprehensive inspection instrument as described in any one of claims 1 to 9, comprising: Walking on the track by means of the walking frame; The track inspection assembly detects track geometric parameters, including: measuring the track gauge through the linear displacement sensor; identifying the sleeper through the ultrasonic sensor; measuring the track superelevation through the inclination sensor; measuring the track height and direction through the gyroscope; measuring the mileage through the rotary encoder; the output signals of the linear displacement sensor, ultrasonic sensor, inclination sensor, gyroscope, and rotary encoder are all transmitted to the data acquisition circuit board, and the data acquisition circuit board pre-processes all the sampled data and uploads them to the host computer; Detecting the contact rail geometric parameters by the contact rail measuring assembly includes: scanning the contact rail surface profile by the first laser sensor and measuring the first distance data from each point to the first laser sensor, uploading the first distance data to the host computer, and calculating the contact rail guide height and pull-out value by the host computer based on the first distance data; The geometric parameters of the sensing plate are detected by the sensing plate measuring component, including: the second laser sensor scans the sensing plate and measures the second distance data from each point to the second laser sensor, the second distance data is uploaded to the host computer, and the host computer calculates the vertical distance between the top surface of the sensing plate and the top surface of the adjacent track based on the second distance data, and calculates the gap between the ends of two adjacent sensing plates.

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