CN217110839U

CN217110839U - Be applicable to full road section rail alignment detection device

Info

Publication number: CN217110839U
Application number: CN202220277610.6U
Authority: CN
Inventors: 何正花; 包园园
Original assignee: Shanghai Railnu Machinery Corp
Current assignee: Shanghai Railnu Machinery Corp
Priority date: 2022-02-11
Filing date: 2022-02-11
Publication date: 2022-08-02
Anticipated expiration: 2032-02-11

Abstract

The utility model discloses a be applicable to full road section rail alignment detection device, this detection device includes the crossbeam, sets up measurement dolly on the crossbeam sets up mount on the measurement dolly sets up measuring mechanism in the mount, with measuring mechanism electric connection's automatic control mechanism and with automatic control mechanism electric connection's detection display mechanism. The utility model discloses need not the manual work and intervene, through the distance parameter that measuring mechanism detected, make up into one set of automatic control detection device with automatic control mechanism, detection display mechanism, calculate out the convexity and the concavity precision that need get rid of the rail automatically, guaranteed each fulcrum position precision to reach the realization that detects the alignment of full way section rail.

Description

Be applicable to full road section rail alignment detection device

Technical Field

The utility model relates to a rail automated inspection technical field, more specifically relates to a be applicable to full road section rail alignment detection device and method.

Background

With the development of the times and the improvement of the machining precision of the steel rail, the machining and detecting precision of old equipment cannot meet the requirement of the current steel rail precision, the uncontrollable performance of operators and the development of situations push the iterative updating of the equipment, and the development of special high-precision automatic measurement and straightening equipment is a necessary development trend. At present, most domestic manufacturers use a manual detection mode to detect the alignment of the steel rail at the whole section, manual detection is adopted, artificial errors are easily caused, the number of stations is large, the speed is low, the manual cost is high, the processing time of the whole line is influenced, along with the rapid development of high-speed rails, measuring tools are aged, redundant stations are removed, personnel are reduced, the manual detection mode cannot adapt to the rhythm of the development of the times, and the accuracy of detection of numerical control equipment cannot be achieved.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a be applicable to whole highway section rail alignment detection device, solve the technical problem that the manual detection production of adopting of the alignment of whole highway section rail that exists adopts is with high costs, the precision is low, the station is many among the prior art, whole unmanned participation provides data such as direction, position, the pressure of the automatic alignment of equipment, reaches unmanned automatic processing's demand.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a be applicable to whole highway section rail alignment detection device, including the crossbeam, set up measurement dolly on the crossbeam sets up mount on the measurement dolly sets up measuring mechanism in the mount, with measuring mechanism electric connection's automatic control mechanism and with automatic control mechanism electric connection's detection display mechanism.

As the utility model discloses an above-mentioned aspect's a be applicable to full road section rail alignment detection device, wherein measuring mechanism includes laser position sensor group, laser position sensor group includes: two top surface laser displacement sensors positioned on the vertical surface are arranged on a fixed frame of the trolley in parallel, double high-precision laser displacement sensors are used as point-to-point detection elements, and equidistant point-to-point interval scanning measurement is carried out on the top surface of the steel rail by setting fixed positions for measuring servo distances; and/or two side laser displacement sensors positioned on the horizontal plane are horizontally arranged on the side surface of the fixing frame of the trolley, double high-precision laser displacement sensors are used as detection elements, and the two side surfaces of the steel rail are scanned and measured at intervals point by point at equal intervals by setting fixed positions for measuring servo distances.

As the utility model discloses an above-mentioned aspect one be applicable to full road section rail alignment detection device, wherein automatic control mechanism include with measuring mechanism electric connection's amplifier, with amplifier electric connection's analog conversion unit, with analog conversion unit electric connection's control center sets up smart panel on the control center and with control center electric connection's the vertical walking servo unit of measurement dolly.

As the above aspect of the present invention, the device for straightening and detecting a full-section steel rail includes a vertical analog conversion module, which is used for a control center to collect data of two top surface laser displacement sensors on a vertical surface, and after conversion, the analog conversion module performs operation to calculate the straightness of the top of the steel rail, and provides technical indexes of the position and direction of the processed steel rail; and/or the horizontal analog quantity conversion module is used for acquiring data of the two lateral laser displacement sensors on the horizontal plane by the control center, calculating after conversion, calculating the straightness of the side part of the steel rail and providing technical indexes for the position and direction of the processed steel rail.

As the above aspect of the present invention, the rail alignment detection apparatus for a whole road section includes a servo unit including a servo part, which is composed of a servo driver, and drives the measuring carriage to travel longitudinally by a servo motor, and a laser position sensor group is delivered to the surface of the rail; and/or the hydraulic part drives the measuring trolley to longitudinally move through the hydraulic oil cylinder, and the laser position sensor group is sent to the surface of the steel rail.

As the utility model discloses an above-mentioned aspect's a be applicable to full road section rail alignment detection device, wherein detect display mechanism include with the interconnected PC data processing center of control center for with the data of analog conversion unit conversion, through software Labview data analysis processing back, the result that obtains the measurement shows with the graphic mode of different length and qualification range with the two-dimensional curve.

Adopt above-mentioned technical scheme, the utility model has the advantages of it is following:

the utility model provides a rail alignment detection device suitable for whole highway section, adopt full-automatic steel rail to detect and the alignment mode, measuring mechanism installs on the crossbeam by laser position sensor group, can transversely carry on, reciprocate the device, drive by measuring the vertical walking servo unit of dolly, measuring dolly descends and send laser sensor to the surface of rail, the sensor divide into perpendicular and side horizontal plane and detects, the dolly transversely advances at the uniform velocity on the rail face, read the current value of sensor every 20mm, forward, read 155 group data/2 laser sensor totally 310 groups, again reverse movement reads 155 group calibration data/2 laser sensor totally 310 groups, send 600 of them group data to the detection display mechanism by CPU and handle, realized automated measurement, fast, artificial with high costs, the process time is short, the measuring precision is high, manual intervention is not needed, a set of automatic control detection device is combined with the automatic control mechanism and the detection display mechanism through the distance parameters detected by the measuring mechanism, various technical parameters of the straightness of the rail surface and the side surface of the steel rail are automatically calculated, and the position precision of each fulcrum is ensured, so that the realization of straightening detection of the steel rail at the whole section is realized, and the device is widely used in industrial control.

Drawings

Other features, objects and advantages of the invention will become more apparent from a reading of the following detailed description of non-limiting embodiments thereof, with reference to the accompanying drawings.

FIG. 1 is a front view of the rail straightening detection device for a whole road section of the present invention;

FIG. 2 is a side view of the structure of the rail straightening detection device for the whole road section of the present invention;

FIG. 3 is a schematic block diagram of the rail straightening detection device for the whole road section of the present invention;

FIG. 4 is a collection laser processing flow of the detecting device of the present invention;

FIG. 5 is a screenshot of the data collection process of the detecting device of the present invention;

fig. 6 is an electrical control block diagram of the utility model is suitable for a full road section rail alignment detection device.

Detailed Description

The technical solution of the present invention is described in detail below with reference to the accompanying drawings, and the detailed features and advantages of the present invention are described in detail in the detailed description, which is sufficient for anyone skilled in the art to understand the technical contents of the present invention and to implement the present invention, and the related objects and advantages of the present invention can be easily understood by those skilled in the art according to the description, the claims and the accompanying drawings disclosed in the present specification.

Fig. 1 shows a front view of the structure of the steel rail straightening and detecting device for the whole road section of the present invention; fig. 2 shows the utility model is suitable for a full way section rail alignment detection device's structure side view.

A steel rail alignment detection device suitable for a whole road section is specifically shown in figures 1 and 2 and comprises a cross beam 1, a measuring trolley 2 arranged on the cross beam 1, a fixing frame 3 arranged on the measuring trolley 2, a measuring mechanism arranged in the fixing frame 3, an automatic control mechanism electrically connected with the measuring mechanism and a detection display mechanism electrically connected with the automatic control mechanism.

The measuring mechanism comprises a laser position sensor group, the laser position sensor group comprises two top surface laser displacement sensors 4 positioned on a vertical surface and/or two side surface laser displacement sensors 5 positioned on a horizontal surface, the two top surface laser displacement sensors and the two side surface laser displacement sensors are arranged on a vertical surface, the two top surface laser displacement sensors and the two side surface laser displacement sensors are respectively arranged on a fixed frame 3 of the trolley in parallel, the two top surface laser displacement sensors and the two side surface laser displacement sensors are arranged on the vertical surface, the two laser displacement sensors and the two side surface laser displacement sensors are respectively formed into a vertical surface, 2 laser displacement sensors and a horizontal surface, the vertical surface laser displacement sensors and the horizontal surface are respectively arranged on the fixed frame 3 of the trolley in parallel, the horizontal surface and the vertical surface are respectively driven by a servo driver, the laser measuring sensors adopt the Wiegler company, the model is OD08RH8C, and the high-precision and high-response speed capability is realized.

During detection, the servo driver drives the measuring trolley to descend to send the laser sensor to the surface of the steel rail 6 to be detected, the laser sensor is divided into a vertical surface and a side horizontal surface for detection, the laser sensor group performs automatic detection on the straightness of the (double laser heads) in the horizontal direction and the vertical direction on the operating steel rail on line, the total running stroke of the measuring trolley is 0-3200mm, the stopping position of the trolley is 0mm, the latest double high-precision laser measuring sensors are pushed out to serve as point-to-point detecting elements, and the top surface and two side surfaces of the steel rail are scanned at intervals point by point at equal intervals by setting fixed positions for measuring servo distances to acquire data. The laser position sensor has high detection accuracy and reliability, high anti-interference performance and good environmental adaptability, has high detection sensitivity and speed response to the detected object, is analog quantity continuous output, makes the detection condition clear at a glance by utilizing a red light spot, has a safety switch function, can meet the requirements of field control, and has high reliability and strong anti-interference capability.

FIG. 3 shows a schematic block diagram of the rail straightening detection device for a whole road section of the present invention; fig. 4 is the collection laser processing flow of the detecting device of the present invention. The schematic block diagram of the detection device and the processing flow of the collected laser are shown in fig. 3 and fig. 4, wherein the automatic control mechanism comprises an amplifier electrically connected with the measurement mechanism, an analog conversion unit electrically connected with the amplifier, a control center electrically connected with the analog conversion unit, an intelligent panel arranged on the control center and a measurement trolley longitudinal walking servo unit electrically connected with the control center.

The amplifier comprises a vertical amplifier module and a horizontal amplifier module, the vertical amplifier module is connected with the output ends of the 2 laser sensors on the vertical surface, data signals collected by the 2 laser sensors 4 on the vertical surface are amplified, the horizontal amplifier module is connected with the output ends of the two side laser sensors 5, and the data signals collected by the two side laser sensors 5 are amplified.

The analog quantity conversion unit comprises a vertical analog quantity conversion module, the vertical analog quantity conversion module is connected with the output end of the vertical amplifier module and is used for controlling the center to collect data of two top surface laser displacement sensor lasers on the vertical surface, the operation is carried out after A/D conversion, the straightness of the top of the steel rail is calculated, and various technical indexes such as the position direction of the processed steel rail are provided; the output end of the horizontal analog quantity conversion module is connected with the output end of the horizontal amplifier module and is used for collecting data of two side laser sensors on a horizontal plane by the control center, and after A/D conversion, operation is carried out to calculate the straightness of the side part of the steel rail and provide various technical indexes such as the position direction of the processed steel rail.

The control center adopts a CPU of the SIEMENS Bob 1500 series, and the model of the CPU is 1515T-2 PN. The smart panel was used in the SIEMENS TP1900 series 15.4 inch screen.

The servo unit for longitudinal walking of the measuring trolley comprises: the servo part adopts a servo driver with a sinics model number of V90, the servo motor drives the measuring trolley to longitudinally travel, and the laser measuring sensor group is sent to the surface of the steel rail; the measuring trolley is driven by the hydraulic oil cylinder to longitudinally travel, and the laser position sensor group is conveyed to the surface of the steel rail.

The detection device adopts a laser measurement sensor group, aiming at the position of three meters on the plane and the side surface of the steel rail, four sensors are respectively arranged at the front and the back of the detection device, an amplifier amplifies the detected distance value signals at the front and the back ends, data conversion is carried out through an analog quantity conversion unit, calculation is carried out after conversion, the straightness of the top and the side part of the steel rail is calculated, a servo unit for longitudinal walking of the measurement trolley is driven by a servo part and a hydraulic part, after a standard base material is fed into a processing station, a steel rail measuring end is manually operated to clamp, vertically turn up and descend, the measurement trolley reaches the position of the rail surface, the installation zero position of the sensor needs to be adjusted, when the sensor reaches the position of the adjustable zero position of the steel rail base material, the position of the sensor, which is 50mm away from the base material, is adjusted up, down, left and right (the sensing range of the sensor is 80mm), and both sides are adjusted within the range, and manually operating the measuring trolley according to the set speed to move the measuring trolley from left to right to move the measuring trolley forwards or backwards.

In addition, the detection display mechanism comprises a PC data processing center which is interconnected with the control center and is used for displaying the measured result in a two-dimensional curve pattern mode in different lengths and a qualified range after the data collected by the measuring mechanism is analyzed and processed by special software Labview data, the industrial personal computer calculates the straightening direction, pressure, up-down/front-back displacement and the like through the detection data of the measuring system, the detection display mechanism coordinates and completes the control of automatic straightening of the head/tail of the operating steel rail, and the data of the automatic straightening direction, position, pressure and the like of the equipment are provided through professional Labview data operation software, so that the requirement of unmanned automatic processing is met.

Furthermore, the utility model discloses still include feedback system, fulcrum position control system and the position adjustment of walking the line platform operation direction of hydraulic pressure alignment system, pressure and displacement and remove.

The operating principle of the hydraulic straightening system is that when the straightening work is in a standby state, the straightening oil cylinder automatically returns to an initial working position under the control of a program: 1. the upper oil cylinder in the vertical direction retracts to the highest position; 2. the lower oil cylinder in the vertical direction returns to the lowest position; 3 the double-piston-rod oil cylinder in the horizontal direction returns to the middle position; at this time, a space position is reserved to avoid collision caused by flowing of the operation steel rail, in order to prevent the vertical upper oil cylinder from slowly moving downwards due to self weight, when the hydraulic system is powered on to work, the system has a working pressure of 1.5MPa (15bar) to keep the vertical upper oil cylinder at a high position, and when the hydraulic system is not powered on to work, the vertical upper oil cylinder can be kept at the high position by a mechanical locking device. The hydraulic straightening operation is carried out by a handle switch to control the vertical direction in an up-and-down operation mode, the handle switch in the horizontal direction is operated left and right to control the horizontal front and back directions, and each operation direction of the handle corresponds to the movement of the corresponding straightening oil cylinder. Because the operating handle has the interlocking function, the straightening operation can be performed in one direction at a time. When the operating handle is pulled to continue to push in any direction, the straightening operation is started to be carried out at the moment, the corresponding straightening oil cylinder drives the straightening force application point to be quickly close to the operation steel rail, when the rail collision position is set, namely after the contact surface of the straightening force application fulcrum and the operation steel rail is reached, the pressure of the hydraulic system rises instantly, the movement speed of the straightening oil cylinder is immediately switched to slow movement, the hydraulic system can correspondingly rise along with the forward pushing of the operating handle at the moment, until the acting force required by the bending deformation of the straightening operation steel rail is reached, and the straightening oil cylinder is loosened to return to the original position.

Pressure and displacement feedback system: in the process of pressing and straightening the operation steel rail, the dynamic chart displayed on the operation display screen can be directly watched to know the pressure borne by the operation steel rail and the generated bending displacement deformation under the current straightening force application state, so as to control the straightening quality of the operation steel rail. The pressure and displacement feedback system is used for transmitting data of the real-time current position of the pressure sensor arranged in the hydraulic system and the displacement sensor arranged on the straightening oil cylinder to a display screen after the data is processed by a computer system. The contents of the icons for displaying the alignment acting force and the displacement deformation are respectively two columns, wherein one column is dynamically refreshed, and the other column is the maximum value for keeping the current alignment state.

Fulcrum position control system: the movable fulcrum mechanism adopts a SIEMENS CPU.V90 six-axis servo control system, and a servo motor controls the measuring position and the large vehicle fulcrum. The 1KW servo motor forms a driving system of the fulcrum position. The synchronous cog belt and the ball screw are connected to adjust and move the position of the fulcrum. The working principle is as follows: the measured data is sent to a control center by the SIEMENS CPU of the host, the result after the calculation of Labview software is returned to the SIEMENS CPU of the host, and after the processing conversion such as position and the like is carried out, the actual position and the movement amount reached by a fulcrum, a movable platform, a displacement and the like are controlled, so that the function of automatic alignment is realized.

Adjusting and moving the position of the running platform in the operation direction: when the rail head enters the operation position and starts to be measured and straightened, the position of the rail head needs to be within the range of the position of the appointed rail head or rail tail, after one measurement operation is finished, whether the walking platform needs to be moved is determined according to the curve condition displayed by the measurement result, so that the straightening center line of the walking platform is aligned with the highest point of the measurement display curve, and the straightening effect and the straightening quality of the position are the best theoretically.

FIG. 5 is a schematic diagram illustrating a data acquisition process of a whole section steel rail straightening detection device; the process of data acquisition of the road section steel rail alignment detection device is shown in fig. 5, the total travel of the running of the measuring trolley is 0-3200mm, the stop position of the trolley is 0mm, the effective travel of the measuring trolley is 40-3140mm, the data acquisition interval is 20mm, when the detection is started, the trolley descends to a preset position of a steel rail, the CPU sends a left-going starting command of the measuring trolley, the CPU sends an acquisition starting command to the effective position of the left-going trolley, the CPU gives an acquisition starting command when the left-going trolley moves to the effective position of 40mm, then current distance data of the laser heads (the data is a value converted by an analog quantity module) is read once every 20mm for storage, through uninterrupted cyclic acquisition, 155 groups of data are acquired in total within the effective range of 40-3140mm, and 310 groups of two groups of laser heads of No. 1 and No. 2 are acquired in total. The data of the No. 2 laser head is used for rechecking the point position adopted by the No. 1 laser head to judge whether the point is real and effective or not so as to ensure the authenticity of the data. The collected and stored data CPU is transmitted to a PC data processing center through a TCP communication port, and the curve graphs of the flatness, the concavity, the convexity and the like of the vertical surface of the steel rail, namely the straightening amount and/or the straightening positions of all supporting points are calculated through the analysis and the processing of special software Labview data. The PC data processing center can send the processed result back to the CPU control center through the TCP communication port again for straightening rail work circulation, the horizontal data acquisition array and the vertical acquisition array are synchronously sent, and the horizontal data acquisition array and the vertical acquisition array are synchronously sent back again for straightening work.

Fig. 6 shows the utility model is suitable for an electrical control block diagram of full way segment rail alignment detection device. The electrical control block diagram of the whole-road steel rail straightening detection device is shown in fig. 6, a control center measures 0-3200mm distance data through an analog quantity conversion unit, and the control center performs calculation after A/D conversion to calculate the straightness of the top and the side of a steel rail and provide technical indexes such as the position direction of the processed steel rail; the system pressure is transmitted to the analog quantity conversion unit through the Lishi le sensor, and is used for accurately controlling the system to apply pressure; in the pressure applying process, the control center accurately controls the input voltage of the proportional amplification plate through the analog quantity conversion unit, and drives the hydraulic proportional valve to control the system pressure; in the automatic straightening and pressing control process, a double closed-loop control system is formed by a pressure sensor and a displacement sensor, so that the accurate position pressing and straightening of the steel rail is achieved. In addition, the pivot and cart positioning are completed by a V90 absolute servo control system, and the stability and accuracy of the equipment in the straightening process are ensured by accurate positioning. The data in the system operation control is displayed, operated and stored by the detection display mechanism and the control center. Calculating whether the rail surface of the rail head or the rail tail at the distance of 0-3 m is concave or convex by data, giving out the vertical/horizontal front-and-back movement direction of alignment and the like, and coordinating to complete the control of automatic alignment of the rail head/the rail tail of the operating steel rail to form an alignment part; the detection display mechanism calculates the alignment direction, pressure, up-down/front-back displacement and the like through detection data of the measurement system to coordinate and complete automatic alignment control of the head/tail of the operation steel rail.

Adopt the utility model is suitable for a detection method of full road section rail alignment detection device, including following step:

s1, data acquisition: the control center acquires distance data of the steel rail through the analog quantity conversion unit A/D conversion laser position sensor group to obtain processing parameters of the base metal;

the processing parameters of the parent metal in the step S1 include the straightness of the top and side of the rail, the protrusion/indentation amount of the rail surface, the horizontal protrusion/indentation amount, the up-down/horizontal forward-backward moving direction of the alignment, the alignment position, and the alignment pressure.

In addition, because the effective measuring distance of the laser position sensor group is 30-50mm, when the distance between the measured steel rail and the laser position sensor group is not in the measuring range, the system does not process the measured and collected data.

S2, cyclic measurement: the measuring trolley is driven by a measuring trolley longitudinal walking servo unit to enable a measuring mechanism to reach the surface of the steel rail, and the plane and the side position of the steel rail are repeatedly and circularly measured;

wherein S2 specifically comprises the following steps:

s21, before straightening preparation machining, hydraulic pressure is opened, an automatic starting button can be pressed only when a clamping device is in a release state, firstly, a steel rail needs to be sent into a preset machining position by a raceway, if the steel rail exceeds a machining position, the requirement that the steel rail needs to run reversely can be met, the requirement that equipment enters automatic running circulation under the above conditions is met, the safety production of the equipment is guaranteed, measurement is started, a core fixing clamp is measured, a movable fulcrum on the upper portion of a measuring trolley is turned up, and the measuring trolley descends;

s22, when the measuring trolley reaches the rail surface position, the installation zero position of the sensor is adjusted, when the sensor reaches the adjustable zero position of the steel rail base material, the position of the sensor, which is 50mm away from the base material, is adjusted up, down, left and right (the sensing range of the sensor is 80mm), and only the two surfaces are adjusted within the range, the measuring trolley is manually operated to move from left to right for a cycle according to the set speed, and the fixing frame moves left and right;

wherein, the fixed mount only needs to satisfy the condition before moving left and right:

the oil pump has started;

the upper moving fulcrum and the force application fulcrum are turned up at a high position;

stopping the operation of the operation steel rail;

the measuring bracket is arranged at the lower position;

the upper left/upper right/lower left/lower right support point stops moving;

the running deck/race line has been disabled.

The method comprises the steps that the measuring trolley transversely advances on a rail surface at a constant speed, the total running stroke of the measuring trolley is 0-3200mm, the stopping position of the measuring trolley is 0mm, the effective measuring stroke is 40-3140mm, when the measuring trolley starts to detect, the measuring trolley descends to a preset position of a steel rail, a CPU sends a left-going starting command of the measuring trolley to measure, the left-going measuring of the measuring trolley is carried out, a laser position sensor group respectively carries out detection on a vertical surface and a side horizontal plane, the measuring trolley moves to the effective position of 40mm, the CPU gives an acquisition starting command, current distance data of a laser head (the data is a value converted by an analog quantity module) are read at intervals of 20mm and stored, and 155 groups of data are collected in an effective range of 40-3140mm through uninterrupted cyclic acquisition;

s23, measuring the right-hand movement of the measuring trolley, completing data reading, reversely moving for 3m in order to ensure the validity of the data, reading 155 groups of recheck data, judging whether the sampling point is real and valid or not to ensure the authenticity of the data, then, lifting the measuring trolley, and falling the moving fulcrum of the measuring trolley;

s24, sending out measurement data synchronously, and sending 310 measured groups of data to a PC data processing center by a CPU for processing and measuring.

S3, data processing: and the control center sends the measured data to the detection display mechanism for processing, and the measured data and the basic data of the steel rail are displayed, operated and stored.

Finally, it should be noted that, although the present invention has been described with reference to the present specific embodiments, it should be understood by those skilled in the art that the above embodiments are only for illustrating the present invention and are not to be used as limitations of the present invention, and that various equivalent changes or substitutions can be made without departing from the spirit of the present invention, and therefore, the changes and modifications to the above embodiments within the spirit of the present invention are all within the scope of the claims of the present invention.

Claims

1. The utility model provides a be applicable to full road section rail alignment detection device, its characterized in that, includes the crossbeam, set up measurement dolly on the crossbeam, set up the mount on the measurement dolly, set up in the measuring mechanism in the mount, with measuring mechanism electric connection's automatic control mechanism and with automatic control mechanism electric connection's detection display mechanism.

2. A full-length rail alignment detection apparatus as claimed in claim 1, wherein said measurement mechanism includes a laser position sensor group, said laser position sensor group including:

two top surface laser displacement sensors positioned on the vertical surface are parallelly installed on a fixed frame of the trolley, double high-precision laser displacement sensors are used as point-to-point detection elements, and equidistant point-to-point interval scanning measurement is carried out on the top surface of the steel rail by setting fixed positions for measuring servo distances; and/or

Two side laser displacement sensors on the horizontal plane are horizontally arranged on the side of a fixing frame of the trolley, double high-precision laser displacement sensors are used as detection elements, and the two side surfaces of the steel rail are scanned and measured at intervals point by point at equal intervals by setting fixed positions for measuring servo distances.

3. The device for detecting alignment of steel rails on a whole road as claimed in claim 2, wherein the automatic control mechanism comprises an amplifier electrically connected with the measuring mechanism, an analog conversion unit electrically connected with the amplifier, a control center electrically connected with the analog conversion unit, a smart panel disposed on the control center, and a servo unit for longitudinal movement of the measuring carriage electrically connected with the control center.

4. The device for straightening and detecting the steel rails of the whole road section according to claim 3, wherein the servo unit for longitudinally walking the measuring trolley comprises:

the servo part consists of a servo driver, the measuring trolley is driven by a servo motor to longitudinally move, and the laser position sensor group is sent to the surface of the steel rail; and/or

And the hydraulic part drives the measuring trolley to longitudinally travel through a hydraulic oil cylinder, and sends the laser position sensor group to the surface of the steel rail.