CN115162077A - Steel rail polishing equipment based on high-pressure water jet technology and operation method thereof - Google Patents
Steel rail polishing equipment based on high-pressure water jet technology and operation method thereof Download PDFInfo
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- CN115162077A CN115162077A CN202210764056.9A CN202210764056A CN115162077A CN 115162077 A CN115162077 A CN 115162077A CN 202210764056 A CN202210764056 A CN 202210764056A CN 115162077 A CN115162077 A CN 115162077A
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- 238000005498 polishing Methods 0.000 title claims abstract description 124
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 74
- 239000010959 steel Substances 0.000 title claims abstract description 74
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B31/00—Working rails, sleepers, baseplates, or the like, in or on the line; Machines, tools, or auxiliary devices specially designed therefor
- E01B31/02—Working rail or other metal track components on the spot
- E01B31/12—Removing metal from rails, rail joints, or baseplates, e.g. for deburring welds, reconditioning worn rails
- E01B31/17—Removing metal from rails, rail joints, or baseplates, e.g. for deburring welds, reconditioning worn rails by grinding
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
- Machines For Laying And Maintaining Railways (AREA)
Abstract
The invention discloses steel rail polishing equipment based on a high-pressure water jet technology, which comprises a flat car (1), a water jet polishing unit (2) arranged in the flat car (1), a track measuring unit (5), a polishing control terminal (6) and a hydraulic driving device (9); the hydraulic drive device (9) comprises a speed sensor (911) and a position sensor (912), and the water jet polishing unit (2) comprises a lifting mechanism (21) connected with the flat car (1), a polishing water jet (22) connected with the lifting mechanism (21), a water flow pressure regulating device (23) communicated with the polishing water jet (22) and an abrasive material feeding device (24). The central controller controls the flat car to move to the grinding operation coordinate in real time, and the water jet grinding unit automatically adjusts the position and the posture of the steel rail along the arc of the mounting base of the steel rail according to different positions, angles, corrugation and profiles of the steel rail to grind.
Description
Technical Field
The invention belongs to the technical field of steel rail grinding, and particularly relates to steel rail grinding equipment based on a high-pressure water jet technology and an operation method thereof.
Background
The steel rail is a main part of high-speed rail and urban rail traffic, and the quality of the steel rail directly influences the safety and stability of driving because of direct contact with wheels of a train. After the railway is opened and operated, the steel rail is in a severe environment for a long time, and due to the power action of the train, the natural environment, the quality of the steel rail and the like, the steel rail is often damaged, such as cracks, abrasion and the like, so that the service life of the steel rail is shortened, the maintenance workload is increased, the maintenance cost is increased, and even the driving safety is seriously influenced. Therefore, the rail must be repaired and removed in time to ensure the safety of rail transportation. And rail polishing is an effective means for efficiently eliminating damage and is widely applied.
Patent document CN202688807U discloses a hybrid power rail grinding wagon, which comprises an internal combustion engine driven power vehicle, an electric driven power vehicle and more than one section of trailer, wherein a grinding device is installed on the trailer, and when the hybrid power rail grinding wagon works in a power-on area or a tunnel area, the power is taken from a contact net through a pantograph of the electric driven power vehicle, so as to provide required power for a traction motor and the grinding device; the hybrid steel rail grinding wagon is switched to a matched mode of an internal combustion engine generator set in a non-electricity area, so that required power is provided for the running of the grinding wagon and a grinding device; patent document CN103786734B discloses a self-powered subway rail grinding wagon, which is a grinding wagon group formed by connecting a hydraulic transmission grinding wagon A1 and a hydraulic transmission grinding wagon A2 through an automatic coupler, wherein the hydraulic transmission grinding wagon A1 and the hydraulic transmission grinding wagon A2 have the same structure.
The technical scheme of the patent still has the following defects: (1) When an internal combustion engine is selected as a power source, the vibration of an internal combustion generator can have adverse effects on vehicle speed control and rail grinding. When hydraulic transmission is adopted as a power source, although the vibration influence brought by the power source can be effectively reduced, when the steel rail grinding device fails to process and meets the quality requirement of the current grinding point, the grinding condition of the steel rail cannot be efficiently fed back with the power source, so that the possibility that the steel rail grinding device driven by the power source rushes through an unfinished required operation point exists, the times of repeated correction are increased, and the working efficiency is reduced; (2) In order to meet the working requirement of constant low speed in working, the whole moving speed of the grinding device is slow, and when the grinding device is in a non-working area, if the moving speed of the grinding device is slow, a large amount of invalid working time is generated, and the working efficiency is reduced; (3) The steel rail is selected for polishing, the temperature of the steel rail is sharply increased mainly by polishing the rolling surface of the head of the steel rail through the grinding wheel, unbalanced thermal stress is generated due to uneven cold and heat, various performances of the rail are reduced, meanwhile, the polishing cutting amount is less, sparks splash during operation, a large amount of dust is generated, the environment and the health of operators are affected, and the noise is larger.
Disclosure of Invention
Aiming at the defects or the improvement requirements of the prior art, the invention provides steel rail polishing equipment and a steel rail polishing method based on a high-pressure water jet technology.
In order to achieve the above objects, according to one aspect of the present invention, there is provided a rail grinding device based on high pressure water jet technology, comprising a flat car, a water jet grinding unit arranged inside the flat car, a rail measuring unit, a grinding control terminal and a hydraulic drive device; wherein,
the hydraulic driving device comprises a speed sensor and a position sensor and is used for monitoring the running speed of the flat car in real time, feeding data back to the central controller, controlling a current regulator and a pump valve motor of the hydraulic station so as to control the motion parameters of the hydraulic motor and further control and drive the flat car to move;
the water jet unit of polishing includes the elevating system who is connected with the flatbed, the water sword of polishing who is connected with this elevating system, respectively with the rivers regulator and the abrasive material feeding device of the water sword UNICOM of polishing, every water sword structure of polishing is similar, including the inboard water sword of wide-angle, the inboard water sword of low-angle, horizontal water sword and the outside water sword of different angle settings, the inboard water sword of wide-angle, the outside water sword are used for polishing the outside edge profile of rail, the inboard water sword of low-angle and the inboard water sword of wide-angle, the cooperation of outside water sword for polish the inboard circle of rail profile, horizontal water sword then is used for polishing rail top plane profile, and the inboard water sword of wide-angle, the inboard water sword of low-angle, horizontal water sword and outside water sword can be according to rail different positions, different angles, different ripples grinds, different profile, carries out automatically regulated position and gesture along its mounting base circular arc and polishes, realizes polishing the rail intelligence.
Further, the flatbed is including locating couple and damping device at its both ends, damping device include with the activity push rod that the couple is connected, the other end fixedly connected with first electro-magnet of activity push rod, first electro-magnet can slide in the shock tube.
Furthermore, the damping device comprises a plurality of groups of damping springs symmetrically arranged on the first electromagnet, one end of each damping spring is fixedly connected with the second electromagnet, and the bottom of the second electromagnet is fixedly connected with a pressure sensor.
Further, the water flow pressure regulating device comprises a water jet supercharger, a cooling device, a water tank and a pump.
Further, the abrasive feeding device comprises an abrasive box for storing abrasive and an abrasive conveying mechanism.
Furthermore, the water jet polishing unit comprises a polishing device cover door arranged on the outer side of the polishing water jet, and the polishing device cover door comprises an upper cover plate, a lower cover plate and a rotary linkage mechanism arranged between the upper cover plate and the lower cover plate.
Furthermore, the track measuring unit comprises a supporting mechanism, a vehicle-mounted track longitudinal wave measuring device and a telescopic mechanism;
the vehicle-mounted track longitudinal wave measuring device is connected with the supporting mechanism through the telescopic mechanism and can automatically control the telescopic mechanism to perform telescopic motion according to the track profile, so that the vehicle-mounted track longitudinal wave measuring device is adjusted to be matched with the track profile.
Further, the track measuring unit comprises a vehicle-mounted track profile measuring device, a lifting adjusting mechanism and a rotating adjusting mechanism;
the vehicle-mounted track profile measuring device is connected with the supporting mechanism through the lifting adjusting mechanism and the rotating adjusting mechanism, the height of the vehicle-mounted track profile measuring device is adjusted in real time through the lifting adjusting mechanism according to track walking shape, and meanwhile the angle of the vehicle-mounted track profile measuring device is adjusted in real time through the rotating adjusting mechanism.
Further, the polishing control terminal comprises a video collecting device, an auxiliary positioning mechanism, a rotating shaft, a driving mechanism and a base, wherein the video collecting device is connected with the driving mechanism through the auxiliary positioning mechanism and the rotating shaft, and the video collecting device, the auxiliary positioning mechanism and the rotating shaft are connected with the vehicle body through the base.
According to another aspect of the invention, a rail grinding method based on a high-pressure water jet technology is provided, and the rail grinding method is realized by using the rail grinding equipment based on the high-pressure water jet technology, and comprises the following steps:
the method comprises the following steps: the method comprises the following steps of (1) hanging a flat car and the rail car, controlling a driven auxiliary wheel to extend out, ejecting wheels of the flat car away from the rail car, dragging the flat car to a working position by the rail car, controlling the driven auxiliary wheel to retract and move, starting the flat car, and taking the flat car as a driving car and the rail car as a driven car;
step two: monitoring the running speed of the flat car in real time according to the speed sensor and the position sensor, and providing constant and stable speed for the flat car through closed-loop control;
step three: starting a water jet polishing device, measuring the longitudinal wave polishing condition of the steel rail in real time through a vehicle-mounted rail longitudinal wave measuring device, detecting the transverse profile of the rail in real time through the vehicle-mounted rail profile measuring device, comparing and analyzing an actual measuring result with a standard parameter, and displaying a deviation value;
step four: planning a steel rail grinding path and grinding parameters of the water jet grinding unit according to the deviation value of the measurement, comparison and analysis of the track measuring unit;
step five: the driving lifting mechanism drives the polishing water jet to move to a corresponding polishing position and adjusts the posture to realize coarse positioning, and the polishing control terminal is started to acquire the position and the posture of the polishing water jet in real time and feed the position and the posture to the control center;
step six: starting a large-angle inner water jet cutter, a small-angle inner water jet cutter, a horizontal water jet cutter and an outer water jet cutter of the water jet polishing unit to realize wrapping polishing on longitudinal corrugation and transverse profile of the steel rail;
step seven: the rail measuring unit measures whether the longitudinal corrugation and the transverse profile of the polished steel rail meet the requirements in real time, if the requirements are not met, the rail measuring unit feeds back the requirements to the control center to control the polishing vehicle to drive the water jet polishing unit to polish the steel rail in a reciprocating mode, and if the requirements are met, the water jet polishing unit is driven to ascend, and polishing is finished.
In general, compared with the prior art, the above technical solution contemplated by the present invention can achieve the following beneficial effects:
1. according to the water jet polishing equipment, the central controller controls the flat car to move to the polishing operation coordinate in real time, and the water jet polishing unit automatically adjusts the position and the posture of the steel rail along the arc of the mounting base of the steel rail according to different positions, different angles, different wave polishing and different profiles of the steel rail to polish the steel rail, so that the steel rail is intelligently polished.
2. According to the water jet polishing equipment, the speed with constant and stable driving speed is provided for the flat car through the closed-loop control system, so that the good matching of the running and polishing operation of the flat car is realized, and the stability and uniformity of polishing are ensured, thereby effectively reducing the possibility that a steel rail polishing device rushes through an operation point which is not yet finished under the driving of a power source. And hydraulic is used as a driving mode, so that the influence caused by the vibration of the internal combustion engine in the prior art is eliminated.
3. The invention discloses water jet polishing equipment, and provides a flat car with driven auxiliary wheels. At the moment, under the driving of the rail car, only the driven auxiliary wheel moves, and the wheels of the flat car cannot rotate, so that the friction of a wheel driving system is avoided.
4. According to the water jet polishing equipment, the first electromagnet and the second electromagnet are electrified to generate the same-direction magnetic poles, so that the two electromagnets generate the reverse repulsive force, and the closer the distance is, the larger the reverse repulsive force is. The pressure sensor is used for detecting the pressure applied to the second electromagnet and feeding back the pressure, so that the sizes of the electrified currents of the first electromagnet and the second electromagnet are controlled, and the technical problem of collision between the first electromagnet and the second electromagnet is solved better.
5. According to the water jet polishing equipment, each water jet cutter can rotate on the circular arc mechanism along a circular arc to a corresponding polishing position according to polishing requirements, after all the water jet cutters are linked, the outline of a steel rail can be effectively fitted, and the angle adjusting range is from 75 degrees at the inner side to 45 degrees at the outer side; if need improve the efficiency of polishing, can two sets of water jet rail grinding wagon reconnection, before polishing with polish the back through on-vehicle track longitudinal wave measurement system and on-vehicle track profile measurement system to implement the measurement to the rail, the quality of polishing is judged to the evaluation track condition before polishing after polishing.
Drawings
FIG. 1 is a front view of a steel rail grinding device based on a high-pressure water jet technology according to an embodiment of the invention;
FIG. 2 is a top view of a rail grinding device based on high-pressure water jet technology according to an embodiment of the invention;
FIG. 3 is a schematic diagram of hydraulic drive control logic of a steel rail grinding device based on a high-pressure water jet technology according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of the installation position of a hydraulic drive sensor of a rail grinding device based on a high-pressure water jet technology according to an embodiment of the invention;
FIG. 5 is a schematic drawing showing the connection of the dragging state of the rail grinding device based on the high-pressure water jet technology according to the embodiment of the invention;
FIG. 6 is a schematic structural diagram of a dragging buffer system of a steel rail grinding device based on a high-pressure water jet technology according to an embodiment of the invention;
FIG. 7 is a schematic structural diagram of a water jet polishing unit of the steel rail polishing equipment based on the high-pressure water jet technology according to the embodiment of the invention;
fig. 8 is a schematic structural view of a water flow pressure regulating device of a steel rail polishing device based on a high-pressure water jet technology in an embodiment of the invention;
FIG. 9 is a schematic structural view of a water jet polishing cutter of a steel rail polishing device based on a high-pressure water jet technology according to an embodiment of the invention;
FIG. 10 is a schematic structural diagram of a grinding control terminal of the steel rail grinding equipment based on the high-pressure water jet technology according to the embodiment of the invention;
FIG. 11 is a structural schematic diagram of a steel rail grinding device based on a high-pressure water jet technology in the left view direction according to an embodiment of the invention;
fig. 12 is a schematic structural view of a cover door device of a steel rail grinding device based on a high-pressure water jet technology according to an embodiment of the invention;
FIG. 13 is a schematic diagram of a working flow of a steel rail grinding device based on a high-pressure water jet technology according to an embodiment of the present invention;
fig. 14 is a schematic diagram of a grinding process of a steel rail grinding device based on a high-pressure water jet technology according to an embodiment of the present invention.
Throughout the drawings, like reference numerals designate like features, and in particular: <xnotran> 1- , 101- , 102- , 2- , 21- , 22- , 221- , 222- , 223- , 224- , 23- , 231- , 232- , 233- , 234- , 24- , 241- , 242- , 25- , 251- , 252- , 253- , 5- , 501- , 502- , 503- , 504- , 505- , 506- , 6- , 601- , 602- , 603- , 604- , 605- , 7- , 701- , 702- , 703- , 704- , 705- , 706- , 8- , 9- , 911- , 912- , 913- , 10- . </xnotran>
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention. In addition, the technical features involved in the embodiments of the present invention described below may be combined with each other as long as they do not conflict with each other.
As shown in fig. 1-2, the embodiment of the invention provides a rail grinding device based on a high-pressure water jet technology, which comprises a flat car 1, a water jet grinding unit 2 arranged inside the flat car 1, a track measuring unit 5, a grinding control terminal 6, a hydraulic driving device 9, a driven auxiliary wheel 10 and a hook 7. The water jet polishing unit 2 comprises a lifting mechanism 21 connected with the flat car 1, a polishing water jet cutter 22 connected with the lifting mechanism 21, a water flow pressure regulating device 23 respectively communicated with the polishing water jet cutter 22, and an abrasive material feeding device 24. The track measuring unit 5 comprises an on-board track longitudinal wave measuring device 501 and an on-board track profile measuring device 502. The vehicle-mounted rail longitudinal wave measuring device 501 is used for measuring the longitudinal wave grinding condition of a steel rail in real time, the vehicle-mounted rail profile measuring device 502 is used for detecting the transverse profile of the rail in real time, comparing and analyzing actual measurement results with standard parameters, displaying deviation values, simultaneously the grinding control terminal 6 is used for monitoring the state of the water jet grinding steel rail in real time, after the longitudinal wave grinding condition, the profile of the rail and the state information of the water jet grinding steel rail are synchronized to the water jet grinding unit 2 in real time, the lifting mechanism 21 is controlled to act to dynamically adjust the pose of the grinding water jet cutter 22, the water flow pressure regulating device 23 is controlled to regulate grinding parameters such as water jet pressure, flow and flow speed of each grinding water jet cutter 22 and feeding parameters such as abrasive feeding quantity, feeding speed and feeding pressure of the abrasive feeding device 24, according to the self-adaptive water jet grinding processing under different wave grinding and profile conditions of the steel rail, and a series of problems of potential safety hazards, spark four-jet, grinding precision, quality and the like caused by the high temperature of the traditional steel rail influencing the rail profile are effectively solved.
As shown in fig. 5, two ends of the flat car 1 are fixedly connected with hooks 7, and the hooks 7 can be clamped and fixed with a rail car 8 with a power system. When the flat car is positioned in a non-working area, the flat car can be dragged by taking the rail car 8 as a main motor car; when the flat car 1 approaches the working area, the flat car can be used as a main motor car to run at a constant low speed. Thereby solving the technical problem of time waste caused by the slow movement of the flat car 1 in a non-working area.
As shown in fig. 3-4, the hydraulic driving device comprises a speed sensor 911 and a position sensor 912 which are installed inside the hydraulic driving device 9 and on a rotating shaft 913 of the flat car, so as to monitor the running speed of the flat car in real time and feed data back to a central controller, thereby controlling a current regulator and a pump valve motor of a hydraulic station, thereby controlling the motion parameters of the hydraulic motor and further controlling the motion of the wheels of the flat car. Meanwhile, the speed sensor 911 and the position sensor 912 detect the motion parameters of the wheels of the flat car in real time, and dynamically adjust the parameters at the next moment. According to the technical scheme, the speed of constant and stable driving speed is provided for the flat car through the closed-loop control system, good matching of running and polishing operation of the flat car is achieved, and stability and uniformity of polishing are guaranteed, so that the possibility that the steel rail polishing device rushes through an operation point which is not yet finished under the driving of a power source is effectively reduced. And the hydraulic is used as a driving mode, so that the influence caused by the vibration of the internal combustion engine in the prior art is eliminated.
In the embodiment of the invention, the roles of the driving vehicle and the driven vehicle need to be changed at any time when the rail car 8 and the flat car 1 move. Therefore, when the rail car 8 is used as a driving car to drag the flat car 1, a set of driving system exists on the wheels of the driven car, so that large friction is brought to the driven wheels, the driving system can be abraded due to long-time running, and in order to solve the technical problem, the invention provides the flat car with the driven auxiliary wheels 10, when the rail car 8 is used as a driving wheel, a hydraulic system drives a plurality of driven auxiliary wheels fixed at the bottom of the flat car 1 to move downwards until the driven auxiliary wheels are contacted with the ground, and the wheels of the flat car are upwards pushed away from the ground. At this time, under the driving of the rail car 8, only the driven auxiliary wheel moves, and the wheels of the flat car cannot rotate, so that the friction of a wheel driving system is avoided.
As shown in fig. 6, which is a schematic structural diagram of the dragging damping device of the present invention, when the flat car 1 and the railcar 8 are fixedly clamped by the hook 7, there is inevitably a certain gap, which causes local extrusion and collision when the two cars run relatively, thereby causing system vibration. The invention provides a dragging shock absorption device which comprises a movable push rod 701 fixedly connected to a hook 7, wherein the other end of the movable push rod 701 is fixedly connected with a first electromagnet 703, and the first electromagnet 703 can slide in a shock absorption cylinder 702. A plurality of groups of damping springs 705 which are symmetrically arranged are fixedly arranged on the upper surface of the first electromagnet 703, and the other ends of the damping springs 705 and the second electromagnet 704 are fixedly arranged at the bottom of the second electromagnet and fixedly connected with a pressure sensor 706. When the two electromagnets are extruded and collided, the hook slides inwards through the movable push rod 701, the damping spring 705 is extruded, and then reverse elasticity is increased, so that a buffering effect is achieved, meanwhile, the first electromagnet 703 and the second electromagnet 704 are electrified to generate magnetic poles in the same direction, so that the two electromagnets generate reverse repulsive force, and the closer the distance is, the larger the reverse repulsive force is. The pressure sensor 706 detects the pressure applied to the second electromagnet 704 and feeds back the pressure, so as to control the magnitude of the current applied to the first electromagnet 703 and the second electromagnet 704, thereby better solving the technical problem of collision between the two electromagnets.
In the embodiment of the present invention, the flatbed 1 is hydraulically driven, and includes a body 101, a running gear 102 provided on the bottom of the body 101, a hydraulic drive unit 9 provided on the flatbed 101, and an on-board battery. The water jet polishing unit 2 is arranged at the bottoms of two sides of the flat plate 101 and is movably connected with the vehicle body 101 through the lifting mechanism 21, a plurality of polishing water jet cutters 22 can be carried simultaneously, if the single side is respectively provided with 4 polishing water jet cutters 22, the synchronous polishing of different positions, different angles, different corrugation and different profile steel rail surfaces can be realized. Specifically, as shown in fig. 9, each of the sanding water jet cutters 22 has a similar structure, and includes a large-angle inner water jet 221, a small-angle inner water jet 222, a horizontal water jet 223, and an outer water jet 224, which are arranged at different angles. Wherein, inboard water sword 221 of wide-angle, outside water sword 224 is used for polishing the outside edge profile of rail, inboard water sword 222 of low-angle and inboard water sword 221 of wide-angle, outside water sword 224 cooperation, be used for polishing the inboard profile of circling of rail, horizontal water sword 223 then is used for polishing rail top plane profile, and inboard water sword 221 of wide-angle, inboard water sword 222 of low-angle, horizontal water sword 223 and outside water sword 224 can be according to the different positions of rail, different angles, different ripples grind, different profile, polish along its mounting base circular arc automatic adjustment position and gesture, the realization is polished rail intelligence. In addition, according to the polishing requirements, each water jet can rotate along an arc on the arc mechanism to a corresponding polishing position, after all the water jets are linked, the contour of the steel rail can be effectively fitted, and the angle adjustment range is from 75 degrees at the inner side to 45 degrees at the outer side; if need improve the efficiency of polishing, can two sets of water jet rail grinding wagon reconnection, before polishing with polish the back through on-vehicle track longitudinal wave measurement system and on-vehicle track profile measurement system to implement the measurement to the rail, the quality of polishing is judged to the evaluation track condition before polishing after polishing.
As shown in fig. 2 and 8, in the embodiment of the present invention, the water flow pressure regulating device 23 includes a water jet pressurizer 231, a cooling device 232, a water tank 233, and a pump 234. Further, the abrasive feeding device 24 includes an abrasive tank 241 storing abrasive and an abrasive conveying mechanism 242. The water tank 233 is used for storing recycled polishing water, as shown in fig. 9, the abrasive is mixed with water in a ratio by the abrasive conveying mechanism 242, and then the rail is polished by pressurizing the abrasive by the water jet pressurizer 231, and the polished water is cooled to normal temperature or low temperature by the cooling device 232 and then flows back to the water tank 233 again to realize recycling of water resources.
As shown in fig. 3 and 12, in the embodiment of the present invention, the water jet grinding unit 2 includes a grinding device cover door 25 provided outside the grinding water jet 22, and the grinding device cover door 25 includes an upper cover plate 251 and a lower cover plate 252, and a rotation link mechanism 253 provided between the upper cover plate 251 and the lower cover plate 252. When the cover door is opened, the self-opening angle is 140 degrees, the polishing device and the internal polishing unit can be used in a list without structure blocking, the visual inspection is convenient, meanwhile, the building track profile cannot be invaded, and the tunnel can be conveniently opened in the tunnel; the rotary linkage mechanism adopts a gas spring supporting structure, so that labor is saved when the cover door is opened; the cover door is simultaneously provided with a safety chain, and the anti-falling protection effect is achieved under the condition of opening the door. After the polishing operation is finished, the lower cover plate 252 is controlled to be lowered, the upper cover plate 251 is driven to be linked through the rotary linkage mechanism 253, the water jet polishing unit 2 is protected, and the track bed and the steel rail are prevented from being damaged due to splashing of water jet.
In addition, as shown in fig. 7, in the embodiment of the present invention, the track measuring unit 5 includes a support mechanism 505, a vehicle-mounted track longitudinal wave measuring device 501, a vehicle-mounted track profile measuring device 502, a lifting adjusting mechanism 503, a rotation adjusting mechanism 504, and a telescoping mechanism 506. The vehicle-mounted track longitudinal wave measuring device 501 is connected with the supporting mechanism 505 through the telescopic mechanism 506, and can automatically control the telescopic mechanism 506 to perform telescopic motion according to the track profile, so that the vehicle-mounted track longitudinal wave measuring device 501 is adjusted to be matched with the track profile, and real-time dynamic detection of track corrugation conditions is realized. The vehicle-mounted track profile measuring device 502 is connected with the supporting mechanism 505 through the lifting adjusting mechanism 503 and the rotating adjusting mechanism 504, the height of the vehicle-mounted track profile measuring device 502 is adjusted in real time through the lifting adjusting mechanism 503 according to track running profile, and meanwhile, the angle of the vehicle-mounted track profile measuring device 502 is adjusted in real time through the rotating adjusting mechanism 504, so that intelligent detection of track profile is achieved. The vehicle-mounted track profile measuring device 502 comprises a laser radar, a positioning module for ensuring accurate positioning of the vehicle; and the vibration compensation module is used for reducing and eliminating measurement errors caused by the motion characteristics of the vehicle. The laser radar is non-contact optical measuring equipment, and two-dimensional plane measurement is carried out on buildings and facilities of an operating space in a mode of continuously emitting sector laser beams. The laser radar scans the background in a sector mode with the angular resolution of 0.25 degrees to obtain a distance profile curve with the installation plane as a horizontal axis, the laser radar can easily obtain track section parameter information, and the track section track profile information can be obtained by setting the distance exceeding the measurement range as FF and limiting the distance and the angle, so that the required track profile information is obtained. The positioning module comprises a speedometer and a binocular camera, and the speedometer calculates the vehicle displacement distance by acquiring and detecting the rotation data of the wheel pair of the flat car; the binocular camera provides basic images for realizing calibration of specific positions and the visual odometer, and the high-precision positioning of the flat car is realized in a sensor fusion mode. The positioning module combines the mileage information of the speed of the train, applies the visual odometer technology, takes a continuous image sequence as an input signal, and carries out motion calculation by calculating the pose change of the positioning module; and simultaneously, identifying and calibrating target characteristics of fixed mileage positions of No. N turnout points, civil air defense doors, platforms and the like, and dynamically correcting mileage information of the vehicle. Through the combination of the odometer and the binocular camera, the positioning accuracy of +/-1 m within a 40km range is realized, the detection system can conveniently acquire more accurate line data from a database, and a foundation is provided for subsequent track profile calculation and polishing position positioning. In the laser radar detection process, certain detection errors are caused by the influences of transverse offset and longitudinal offset caused by multi-degree-of-freedom vibration of a vehicle body. Therefore, the detection result needs to be compensated and corrected by the vibration compensation module, so that the system error is reduced, and the measurement precision is improved. The vibration compensation module comprises two laser camera shooting type sensors, two compensation cameras, an inclination angle sensor and a gyroscope. The two laser camera shooting type sensors are respectively used for scanning and selecting fixed points at the positions, 16mm away from the lower portion of the plane of the rail, of the inner side of the steel rail. And in a static state, acquiring the horizontal (height) distance of the 0# camera and the 1# camera relative to the nearest steel rail by the data imaged by the 0# camera and the 1# camera, recording the inclined posture of the vehicle body by using an inclination angle sensor, and selecting a reference plane by using a gyroscope. And setting the distance as the calibration distance of the initial state. When the platform lorry runs, the dynamic horizontal distance is obtained through the imaging and data of the 0# and 1# cameras and the data processing of the tilt sensor, and then the difference value (namely the left-right swing deviation of the lorry body) obtained by subtracting the static horizontal distance from the dynamic horizontal distance is compensated to the detection of the object horizontal value through a corresponding compensation algorithm. The intelligent track profile detection of the invention identifies, monitors and analyzes factors which are easy to induce displacement mutation and are difficult to perceive micro displacement, thereby realizing the prediction and judgment of the condition that polishing is possible to happen in the future, and the vibration compensation module can eliminate the measurement error caused by vehicle body vibration, ensure that the dynamic measurement error of the flat car is less than or equal to 10mm, and solve the problem of larger track profile detection error.
Further, in the embodiment of the present invention, as shown in fig. 10, the grinding control terminal 6 includes a video capture device 601, an auxiliary positioning mechanism 602, a rotation shaft 603, a driving mechanism 604, and a base 605. The video capture device 601 is connected to a driving mechanism 604 through an auxiliary positioning mechanism 602 and a rotating shaft 603, and the video capture device 601, the auxiliary positioning mechanism 602 and the rotating shaft 603 are connected to the vehicle body 101 through a base 605. The rail grinding and profiling device comprises a rail measuring unit 5, a video acquisition device 601, an auxiliary positioning mechanism 602 and a rotating shaft 603, wherein the rail grinding and profiling device is used for acquiring rail grinding and profiling according to detection of the rail measuring unit 5, adjusting the position and the posture of the video acquisition device 601 in real time, acquiring grinding videos of a water jet grinding unit 2 in real time and transmitting the grinding videos to a control unit, the control unit calculates and adjusts the grinding posture of a grinding water jet cutter 22 according to the rail measuring unit 5 and grinding video information acquired by a grinding control terminal 6, and intelligent rail grinding is achieved. In addition, the video acquisition equipment 601 realizes that a driver monitors the polishing operation in a cab, and can display the working states of the grinding head and each part of the polishing mechanism; when the abnormity appears, the control system has an alarm function. The water jet grinding device can be detected at the lifting position, so that a driver can master whether the grinding device is lowered onto the steel rail or not, and an alarm is given out when the grinding device is derailed.
As shown in fig. 13-14, the workflow of the present invention includes the following steps:
the method comprises the following steps: the method comprises the following steps of (1) hanging a flat car on a rail car, controlling driven auxiliary wheels to extend out, jacking wheels of the flat car away from the rail car, dragging the flat car to a working position by the rail car, controlling the driven auxiliary wheels to retract and move, starting the flat car, and taking the flat car as a driving motor car and the rail car as a driven car;
step two: monitoring the running speed of the flat car in real time according to the speed sensor and the position sensor, and providing constant and stable speed for the flat car through closed-loop control;
step three: starting a water jet polishing device, measuring the longitudinal wave polishing condition of the steel rail in real time through a vehicle-mounted rail longitudinal wave measuring device, detecting the transverse profile of the rail in real time through the vehicle-mounted rail profile measuring device, comparing and analyzing an actual measuring result with a standard parameter, and displaying a deviation value;
step four: planning a steel rail grinding path and grinding parameters of the water jet grinding unit according to the deviation value of the measurement, comparison and analysis of the track measuring unit;
step five: the driving lifting mechanism drives the polishing water jet to move to a corresponding polishing position and adjusts the posture to realize coarse positioning, and the polishing control terminal is started to acquire the position and the posture of the polishing water jet in real time and feed the position and the posture to the control center;
step six: starting a large-angle inner water jet, a small-angle inner water jet, a horizontal water jet and an outer water jet of the water jet polishing unit to realize the wrap-around polishing of the longitudinal corrugation and the transverse profile of the steel rail;
step seven: the rail measuring unit measures whether the longitudinal corrugation and the transverse profile of the polished steel rail meet requirements in real time, if not, the requirements are fed back to the control center to control the polishing vehicle to drive the water jet polishing unit to achieve reciprocating polishing of the steel rail, and if the requirements are met, the water jet polishing unit is driven to ascend, and polishing is finished.
Wherein, step three includes:
the method comprises the following steps: collecting longitudinal corrugation data and transverse profile data of different time tracks to form a multi-dimensional data set spanning time and space dimensions, and forming a result into a multi-dimensional data set spanning time and space dimensions through detection for months and years; preferably, the multi-dimensional dataset is (T) m ，L n ，X k ，Y k ). Wherein Tm refers to day m; l is n The nth meter of the mileage of the line; x k And Y k Respectively indicating X and Y coordinates of kth data point of the track section;
step two: converting each data non-equidistant time sequence into a continuous time sequence by adopting a multi-time spline interpolation method; because the detection data may not be acquired in a fixed period and may have data vacancy, the original detection data of the track defects is processed by adopting a multi-time spline interpolation method, and the non-equidistant time sequence of each item of data is converted into a continuous time sequence;
step three: and filtering the deformation data by a semi-parameter improved Kalman filter, decomposing measurement error information contained in the longitudinal corrugation data and the transverse profile data by utilizing a Kalman filtering formula, separating a track defect trend item and an error item, and accurately measuring the longitudinal corrugation data and the transverse profile data of the track.
It will be understood by those skilled in the art that the foregoing is only a preferred embodiment of the present invention, and is not intended to limit the invention, and that any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (10)
1. The steel rail grinding equipment based on the high-pressure water jet technology is characterized by comprising a flat car (1), a water jet grinding unit (2) arranged in the flat car (1), a track measuring unit (5), a grinding control terminal (6) and a hydraulic driving device (9); wherein,
the hydraulic driving device (9) comprises a speed sensor (911) and a position sensor (912), and is used for monitoring the running speed of the flat car in real time, feeding data back to a central controller, controlling a current regulator and a pump valve motor of a hydraulic station so as to control the motion parameters of a hydraulic motor, and further controlling and driving the flat car (1) to move;
the water jet polishing unit (2) comprises an elevating mechanism (21) connected with a flat car (1), a polishing water jet cutter (22) connected with the elevating mechanism (21), a water flow pressure regulating device (23) and an abrasive material feeding device (24) which are respectively communicated with the polishing water jet cutter (22), wherein each polishing water jet cutter (22) is similar in structure, the structure comprises large-angle inner side water jet cutters (221) arranged at different angles, small-angle inner side water jet cutters (222), horizontal water jet cutters (223) and outer side water jet cutters (224), the large-angle inner side water jet cutters (221), the outer side water jet cutters (224) are used for polishing the outer side edge profile of the steel rail, the small-angle inner side water jet cutters (222) are matched with the large-angle inner side water jet cutters (221), the outer side water jet cutters (224) and are used for polishing the inner side circle turning profile of the steel rail, the horizontal water jet cutters (223) are used for polishing the top plane profile of the steel rail, the large-angle inner side water jet cutters (221), the inner side small-angle water jet cutters (222), the horizontal water jet cutters (223) and the outer side water jet cutters (224) can be used for polishing the steel rail mounting positions and the arc polishing postures automatically.
2. A rail grinding device based on high-pressure water jet technology according to claim 1, characterized in that the flat car (1) comprises a hook (7) and a damping device arranged at two ends of the flat car, the damping device comprises a movable push rod (701) connected with the hook (7), the other end of the movable push rod (701) is fixedly connected with a first electromagnet (703), and the first electromagnet (703) can slide in a damping cylinder (702).
3. A rail grinding device based on high-pressure water jet technology according to claim 2, characterized in that the damping device comprises a plurality of groups of damping springs (705) symmetrically mounted on the first electromagnet (703), one end of each damping spring (705) is fixedly connected with a second electromagnet (704), and the bottom of the second electromagnet (704) is fixedly connected with a pressure sensor (706).
4. A rail grinding equipment based on high-pressure water jet technology according to any one of claims 1-3, characterized in that the water flow pressure regulating device (23) comprises a water jet supercharger (231), a cooling device (232), a water tank (233) and a pump (234).
5. A rail grinding equipment based on high pressure water jet technology according to any one of claims 1-3 characterized in that the abrasive feeding device (24) comprises an abrasive box (241) for storing abrasive and an abrasive conveying mechanism (242).
6. A rail grinding equipment based on high pressure water jet technology according to any one of claims 1-3 characterized in that the water jet grinding unit (2) comprises a grinding device cover door (25) arranged outside the grinding water jet (22), the grinding device cover door (25) comprises an upper cover plate (251) and a lower cover plate (252) and a rotary linkage mechanism (253) arranged between the upper cover plate (251) and the lower cover plate (252).
7. A rail grinding equipment based on high pressure water jet technology according to any one of claims 1-3 characterized in that the rail measuring unit (5) comprises a supporting mechanism (505), an on-board rail longitudinal wave measuring device (501) and a telescoping mechanism (506);
the vehicle-mounted track longitudinal wave measuring device (501) is connected with the supporting mechanism (505) through the telescopic mechanism (506), and the telescopic mechanism (506) can be automatically controlled to perform telescopic motion according to the track profile, so that the vehicle-mounted track longitudinal wave measuring device (501) is adjusted to be matched with the track profile.
8. A rail grinding equipment based on high-pressure water jet technology according to claim 7, characterized in that the rail measuring unit (5) comprises a vehicle-mounted rail profile measuring device (502), a lifting adjusting mechanism (503) and a rotating adjusting mechanism (504);
the vehicle-mounted track profile measuring device (502) is connected with the supporting mechanism (505) through the lifting adjusting mechanism (503) and the rotating adjusting mechanism (504), the height of the vehicle-mounted track profile measuring device (502) is adjusted in real time through the lifting adjusting mechanism (503) according to track walking shape, and meanwhile the angle of the vehicle-mounted track profile measuring device (502) is adjusted in real time through the rotating adjusting mechanism (504).
9. A steel rail grinding equipment based on high pressure water jet technology according to any one of claims 1-3, characterized in that the grinding control terminal (6) comprises a video acquisition device (601), an auxiliary positioning mechanism (602), a rotating shaft (603), a driving mechanism (604) and a base (605), wherein the video acquisition device (601) is connected with the driving mechanism (604) through the auxiliary positioning mechanism (602) and the rotating shaft (603), and the video acquisition device (601), the auxiliary positioning mechanism (602) and the rotating shaft (603) are connected with the vehicle body (101) through the base (605).
10. A rail grinding method based on a high-pressure water jet technology is characterized by being realized by applying the rail grinding equipment based on the high-pressure water jet technology as claimed in any one of claims 1 to 9, and comprising the following steps:
the method comprises the following steps: the method comprises the following steps of (1) hanging a flat car on a rail car, controlling driven auxiliary wheels to extend out, jacking wheels of the flat car away from the rail car, dragging the flat car to a working position by the rail car, controlling the driven auxiliary wheels to retract and move, starting the flat car, and taking the flat car as a driving motor car and the rail car as a driven car;
step two: monitoring the running speed of the flat car in real time according to the speed sensor and the position sensor, and providing constant and stable speed for the flat car through closed-loop control;
step three: starting a water jet polishing device, measuring the longitudinal wave polishing condition of the steel rail in real time through a vehicle-mounted rail longitudinal wave measuring device, detecting the transverse profile of the rail in real time through the vehicle-mounted rail profile measuring device, comparing and analyzing an actual measuring result with a standard parameter, and displaying a deviation value;
step four: planning a steel rail grinding path and grinding parameters of a water jet grinding unit according to the deviation value of the measurement, comparison and analysis of the track measurement unit;
step five: the driving lifting mechanism drives the polishing water jet to move to a corresponding polishing position and adjusts the posture to realize coarse positioning, and the polishing control terminal is started to acquire the position and the posture of the polishing water jet in real time and feed the position and the posture to the control center;
step six: starting a large-angle inner water jet cutter, a small-angle inner water jet cutter, a horizontal water jet cutter and an outer water jet cutter of the water jet polishing unit to realize wrapping polishing on longitudinal corrugation and transverse profile of the steel rail;
step seven: the rail measuring unit measures whether the longitudinal corrugation and the transverse profile of the polished steel rail meet the requirements in real time, if the requirements are not met, the rail measuring unit feeds back the requirements to the control center to control the polishing vehicle to drive the water jet polishing unit to polish the steel rail in a reciprocating mode, and if the requirements are met, the water jet polishing unit is driven to ascend, and polishing is finished.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210764056.9A CN115162077A (en) | 2022-06-29 | 2022-06-29 | Steel rail polishing equipment based on high-pressure water jet technology and operation method thereof |
| PCT/CN2022/131354 WO2024000992A1 (en) | 2022-06-29 | 2022-11-11 | Steel rail grinding equipment based on high-pressure water jet technology, and operation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210764056.9A CN115162077A (en) | 2022-06-29 | 2022-06-29 | Steel rail polishing equipment based on high-pressure water jet technology and operation method thereof |
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| CN115162077A true CN115162077A (en) | 2022-10-11 |
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| CN202210764056.9A Pending CN115162077A (en) | 2022-06-29 | 2022-06-29 | Steel rail polishing equipment based on high-pressure water jet technology and operation method thereof |
Country Status (2)
| Country | Link |
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| CN (1) | CN115162077A (en) |
| WO (1) | WO2024000992A1 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115455747A (en) * | 2022-11-11 | 2022-12-09 | 成都西交轨道交通技术服务有限公司 | Rail corrugation evaluation and maintenance management method and system and electronic equipment |
| WO2024000992A1 (en) * | 2022-06-29 | 2024-01-04 | 中铁第四勘察设计院集团有限公司 | Steel rail grinding equipment based on high-pressure water jet technology, and operation method thereof |
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| CH592780A5 (en) * | 1976-01-07 | 1977-11-15 | Speno International | |
| US4178724A (en) * | 1978-03-23 | 1979-12-18 | Harsco Corporation | Rail grinding system |
| DE3937812C1 (en) * | 1989-11-14 | 1991-03-21 | Linsinger Maschinenbau Ges.M.B.H., Steyrermuehl, At | |
| AT14391U1 (en) * | 2014-05-16 | 2015-10-15 | Plasser & Theurer Export Von Bahnbaumaschinen Gmbh | Rail grinding unit |
| CN207257483U (en) * | 2017-08-08 | 2018-04-20 | 杨丽达 | A kind of agricultural transport vehicle |
| CN111809463B (en) * | 2019-04-11 | 2023-06-16 | 中国铁建高新装备股份有限公司 | Intelligent steel rail polishing system based on AI method and corresponding polishing method |
| CN110843804B (en) * | 2019-11-11 | 2024-03-15 | 中铁第四勘察设计院集团有限公司 | Dual-power constant low-speed steel rail laser strengthening vehicle and control method thereof |
| CN114541195B (en) * | 2022-04-25 | 2022-08-16 | 中铁第四勘察设计院集团有限公司 | Abrasive water jet polishing system and method based on multi-axis drive control |
| CN114575205A (en) * | 2022-04-28 | 2022-06-03 | 中铁第四勘察设计院集团有限公司 | Water jet steel rail profile intelligent polishing system based on image data processing |
| CN115162077A (en) * | 2022-06-29 | 2022-10-11 | 中铁第四勘察设计院集团有限公司 | Steel rail polishing equipment based on high-pressure water jet technology and operation method thereof |
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2022
- 2022-06-29 CN CN202210764056.9A patent/CN115162077A/en active Pending
- 2022-11-11 WO PCT/CN2022/131354 patent/WO2024000992A1/en unknown
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2024000992A1 (en) * | 2022-06-29 | 2024-01-04 | 中铁第四勘察设计院集团有限公司 | Steel rail grinding equipment based on high-pressure water jet technology, and operation method thereof |
| CN115455747A (en) * | 2022-11-11 | 2022-12-09 | 成都西交轨道交通技术服务有限公司 | Rail corrugation evaluation and maintenance management method and system and electronic equipment |
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| WO2024000992A1 (en) | 2024-01-04 |
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