CN113319152B - Method for realizing intelligent pressure straightening of steel rail - Google Patents

Method for realizing intelligent pressure straightening of steel rail Download PDF

Info

Publication number
CN113319152B
CN113319152B CN202110430511.7A CN202110430511A CN113319152B CN 113319152 B CN113319152 B CN 113319152B CN 202110430511 A CN202110430511 A CN 202110430511A CN 113319152 B CN113319152 B CN 113319152B
Authority
CN
China
Prior art keywords
steel rail
computer
rail
conveying
detecting
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
CN202110430511.7A
Other languages
Chinese (zh)
Other versions
CN113319152A (en
Inventor
范佳
韩健
李玉谦
李钧正
韩志杰
朱华林
张军
张啸良
侯钢铁
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Handan Iron and Steel Group Co Ltd
HBIS Co Ltd Handan Branch
Original Assignee
Handan Iron and Steel Group Co Ltd
HBIS Co Ltd Handan Branch
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Handan Iron and Steel Group Co Ltd, HBIS Co Ltd Handan Branch filed Critical Handan Iron and Steel Group Co Ltd
Priority to CN202110430511.7A priority Critical patent/CN113319152B/en
Publication of CN113319152A publication Critical patent/CN113319152A/en
Application granted granted Critical
Publication of CN113319152B publication Critical patent/CN113319152B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D3/00—Straightening or restoring form of metal rods, metal tubes, metal profiles, or specific articles made therefrom, whether or not in combination with sheet metal parts
    • B21D3/10—Straightening or restoring form of metal rods, metal tubes, metal profiles, or specific articles made therefrom, whether or not in combination with sheet metal parts between rams and anvils or abutments
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C51/00—Measuring, gauging, indicating, counting, or marking devices specially adapted for use in the production or manipulation of material in accordance with subclasses B21B - B21F
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D43/00—Feeding, positioning or storing devices combined with, or arranged in, or specially adapted for use in connection with, apparatus for working or processing sheet metal, metal tubes or metal profiles; Associations therewith of cutting devices
    • B21D43/02—Advancing work in relation to the stroke of the die or tool
    • B21D43/04—Advancing work in relation to the stroke of the die or tool by means in mechanical engagement with the work
    • B21D43/08—Advancing work in relation to the stroke of the die or tool by means in mechanical engagement with the work by rollers

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Straightening Metal Sheet-Like Bodies (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)

Abstract

The invention provides a method for realizing intelligent pressure straightening of a steel rail, which is realized by a steel rail pressure straightening intelligent control system on the basis of fully utilizing the hardware equipment of the existing steel rail pressure straightening machine, and the system comprises the following steps: the device comprises a steel rail salient point detection module, a steel rail roller way transportation module, a briquetting pressing displacement amount calculation module and a briquetting pressing displacement amount control module. The method comprises the following steps: according to certain scale distance through the laser rangefinder mode, detect the position of the regional bump of different scales of rail in succession, and measure corresponding height, then according to installing the briquetting screw-down displacement volume calculation model in the computer, the high screw-down displacement of briquetting of corresponding bump is calculated to intelligence, the motion of rethread computer according to the automatic control briquetting of calculated result at last, realize the intelligent pressure straightening to the rail, ensure the straightness quality of rail, improve rail production efficiency simultaneously, reduce staff intensity of labour, realize rail pressure straightening intelligent production.

Description

Method for realizing intelligent pressure straightening of steel rail
Technical Field
The invention provides a method for realizing intelligent pressure straightening operation of a steel rail, which improves production rhythm and economic benefit on the basis of ensuring the straightness quality of the steel rail and belongs to the technical field of hot steel section bar processes.
Technical Field
The straightness of the steel rail directly influences the running speed and comfort of the train and even endangers the safety of the train. In the production process of the steel rail, a multi-roller straightening machine is generally adopted for straightening to ensure the straightness of the steel rail. However, the unevenness of the partial region of the rail straightened by the roller straightener still cannot meet the standard requirement, and most prominently, some convex regions (hereinafter, referred to as bumps for short) exist along the longitudinal direction of the rail. Therefore, the production site often needs to adopt a rail pressure straightener to perform supplementary straightening on the uneven position of the rail.
At present, hardware equipment of a steel rail pressure straightening machine mainly comprises a roller way conveying device, a hydraulic device and a cushion block adjusting device. Wherein:
the roller way conveying device mainly comprises a plurality of conveying rollers and a driving motor. The specific working mode is as follows: after the staff clicks the 'start' button, the driving motor can be driven to rotate, so that the conveying roller is driven to rotate, and the steel rail is conveyed. When the operator clicks the 'stop' button, the driving motor and the conveying roller stop rotating, so that the rail transportation is stopped.
The hydraulic device mainly comprises a hydraulic cylinder, a piston, a connecting rod, a pressing block, an upper cavity oil inlet electromagnetic regulating valve, an upper cavity oil outlet electromagnetic switch valve, a lower cavity oil inlet electromagnetic regulating valve, a lower cavity oil outlet electromagnetic switch valve, an upper cavity oil inlet electromagnetic regulating valve PLC, an upper cavity oil outlet electromagnetic switch valve PLC, a lower cavity oil inlet electromagnetic regulating valve PLC, a lower cavity oil outlet electromagnetic switch valve PLC, a displacement sensor and a hydraulic control computer. Wherein, the upper end of the connecting rod is connected with the piston, and the lower end is connected with the pressing block. The piston is assembled in the hydraulic cylinder and can drive the connecting rod and the pressing block to move up and down. The piston divides the hydraulic cylinder into an upper cavity and a lower cavity, the side wall of the upper cavity is respectively connected with an upper cavity oil inlet pipe and an upper cavity oil outlet pipe, an upper cavity oil inlet electromagnetic regulating valve is installed on the upper cavity oil inlet pipe, and an upper cavity oil outlet electromagnetic switch valve is installed on the upper cavity oil outlet pipe; the side wall of the lower cavity is respectively connected with a lower cavity oil inlet pipe and a lower cavity oil outlet pipe, a lower cavity oil inlet electromagnetic regulating valve is installed on the lower cavity oil inlet pipe, and a lower cavity oil outlet electromagnetic switch valve is installed on the lower cavity oil outlet pipe; the upper cavity is provided with a displacement sensor for detecting the relative position between the oil hydraulic cylinder and the piston. The hydraulic control computer is mainly connected with an upper cavity oil inlet electromagnetic regulating valve PLC, an upper cavity oil outlet electromagnetic switch valve PLC, a lower cavity oil inlet electromagnetic regulating valve PLC, a lower cavity oil outlet electromagnetic switch valve PLC and a displacement sensor, and is used for sending command signals to the upper cavity oil inlet electromagnetic regulating valve PLC, the upper cavity oil outlet electromagnetic switch valve PLC, the lower cavity oil inlet electromagnetic regulating valve PLC and the lower cavity oil outlet electromagnetic switch valve PLC on one hand to control the opening and closing of the upper cavity oil inlet electromagnetic regulating valve, the upper cavity oil outlet electromagnetic switch valve, the lower cavity oil inlet electromagnetic regulating valve and the lower cavity oil outlet electromagnetic switch valve; and on the other hand, the device receives a signal fed back by the displacement sensor, grasps the relative position between the oil hydraulic cylinder and the piston in real time and further grasps the pressing displacement of the pressing block. In addition, the hydraulic control computer has three control modes, namely: a control mode before pressure straightening, a control mode in pressure straightening and a control mode after pressure straightening.
The concrete working mode of the control mode before pressure straightening is as follows: after a worker clicks a start button, the hydraulic control computer sends a command signal to the upper cavity oil inlet electromagnetic regulating valve PLC, opens the upper cavity oil inlet electromagnetic regulating valve, sends a command signal to the upper cavity oil outlet electromagnetic switch valve PLC, closes the upper cavity oil inlet electromagnetic regulating valve, and then hydraulic oil enters the upper cavity of the hydraulic cylinder under the action of external pressure; meanwhile, the lower cavity oil inlet electromagnetic regulating valve PLC sends out a command signal, the lower cavity oil inlet electromagnetic regulating valve is closed, the lower cavity oil outlet electromagnetic switch valve PLC sends out a command signal, the lower cavity oil outlet electromagnetic switch valve is opened, the piston moves downwards under the pressure of hydraulic oil, and the pressing block is driven to move downwards. When a worker observes that the pressing block is in contact with the rail head of the steel rail, the worker clicks a stop button, at the moment, the hydraulic control computer sends a command signal to the upper cavity oil inlet electromagnetic regulating valve PLC, the upper cavity oil inlet electromagnetic regulating valve is closed, and meanwhile, the lower cavity oil outlet electromagnetic switch valve is closed by sending a command signal to the lower cavity oil outlet electromagnetic switch valve PLC. At this moment, the piston stops moving downwards in the hydraulic cylinder and drives the pressing block to stop moving downwards.
The specific working mode of the control mode in the pressure straightening is as follows: a worker inputs a set value of pressing displacement of a pressing block in a hydraulic control computer, then clicks a start button, the hydraulic control computer firstly marks the current data of a displacement sensor as zero, then sends a command signal to an upper cavity oil inlet electromagnetic regulating valve PLC, opens the upper cavity oil inlet electromagnetic regulating valve, sends a command signal to an upper cavity oil outlet electromagnetic switch valve PLC, closes the upper cavity oil inlet electromagnetic regulating valve, and at the moment, hydraulic oil enters an upper cavity of a hydraulic cylinder under the action of external pressure; meanwhile, the lower cavity oil inlet electromagnetic regulating valve PLC sends out a command signal, the lower cavity oil inlet electromagnetic regulating valve is closed, the lower cavity oil outlet electromagnetic switch valve PLC sends out a command signal, the lower cavity oil outlet electromagnetic switch valve is opened, the piston moves downwards under the pressure of hydraulic oil, and the pressing block is driven to move downwards. At the moment, the hydraulic control computer acquires data fed back by the displacement sensor in real time, and when the fed-back data is consistent with a set value of pressing displacement of the pressing block, the hydraulic control computer sends a command signal to the upper cavity oil inlet electromagnetic regulating valve PLC to close the upper cavity oil inlet electromagnetic regulating valve, and sends a command signal to the lower cavity oil outlet electromagnetic switch valve PLC to close the lower cavity oil outlet electromagnetic switch valve. At the moment, the piston stops moving downwards in the hydraulic cylinder and drives the pressing block to stop moving downwards.
The concrete working mode of the control mode after pressure straightening is as follows: a worker clicks a 'start' button, the hydraulic control computer sends a command signal to the upper cavity oil inlet electromagnetic regulating valve PLC, the upper cavity oil inlet electromagnetic regulating valve is closed, a command signal is sent to the upper cavity oil outlet electromagnetic switch valve PLC, and the upper cavity oil outlet electromagnetic switch valve is opened; meanwhile, the lower cavity oil inlet electromagnetic regulating valve PLC sends out a command signal, the lower cavity oil inlet electromagnetic regulating valve is opened, the lower cavity oil outlet electromagnetic switch valve PLC sends out a command signal, the lower cavity oil outlet electromagnetic switch valve is closed, hydraulic oil enters the lower cavity of the hydraulic cylinder under the action of external pressure, the piston moves upwards under the pressure of the hydraulic oil, and the pressing block is driven to move upwards. When the piston moves upwards to the highest position, the displacement sensor feeds back the data of the highest point position to the hydraulic control computer, the hydraulic control computer sends a command signal to the upper cavity oil outlet electromagnetic switch valve PLC to close the upper cavity oil outlet electromagnetic switch valve, and simultaneously sends a command signal to the lower cavity oil inlet electromagnetic control valve PLC to close the lower cavity oil inlet electromagnetic control valve. At the moment, the piston stops moving upwards in the hydraulic cylinder and drives the pressing block to stop moving upwards.
The cushion block adjusting device mainly comprises two cushion blocks and a slide rail. Wherein, the cushion can move about on the slide rail. Before the pressure straightening of the steel rail, a worker manually adjusts the distance between the cushion blocks and requires that the two cushion blocks are symmetrically arranged on the two sides of the cushion blocks in the horizontal direction. Meanwhile, the interval between the two spacers is set to be in the range of 0.5m to 1m.
At present, the traditional method for carrying out pressure straightening on steel rails in a production field is mainly completed by workers in a manual mode. The specific method comprises the following steps:
the method comprises the following steps: firstly, a staff places a scale with the gauge length of 1m or 2m on a certain area on the rail head of the steel rail along the longitudinal direction of the steel rail on a platform of the pressure straightening machine.
Step two: the staff fills in the clearance of scale and railhead contact with the clearance gauge that marks certain thickness, along rail longitudinal direction horizontal slip, through the gliding degree of difficulty of clearance gauge, the artifical bump position of judging the rail railhead of rail. Namely: in the scale area, if the feeler is difficult to slide at the central position of the area, and the two side positions of the area are easy to slide, the existence of 1 salient point in the calibration area of the scale is indicated. Simultaneously, the staff judges the bump height of rail railhead according to the clearance gauge thickness that has markd before, promptly:
bump height = feeler gauge thickness
Step three: the staff has adjusted the interval of two cushion according to the scale size, manual regulation.
Step four: a worker manually conveys the salient point position of the steel rail to the lower part of a pressing block of the straightening machine by utilizing a conveying roller way on a platform of the pressure straightening machine, and ensures that two cushion blocks are symmetrically arranged on two sides of the salient point by taking the salient point position of the steel rail as a central point and are in contact with the rail bottom of the steel rail. And then according to a control mode before pressure straightening, the complete contact between the position of the pressing block and the convex point on the surface of the rail head of the steel rail is realized, then according to a control mode in pressure straightening, displacement data needing pressing of the pressing block is manually input into a hydraulic control computer according to experience, and then the pressing block is moved downwards correspondingly, so that the convex point of the steel rail is subjected to plastic deformation to a certain degree, the convex point of the steel rail is eliminated, and the flatness of the steel rail is ensured. And finally, lifting the pressing block to the highest position according to a control mode after pressure straightening.
Step five: and (5) the worker repeats the operation of the step two, so as to verify whether the salient points in the scale area of the steel rail are eliminated. If the salient points are eliminated, the straightness of the steel rail in the area meets the standard requirement, and staff can manually measure and process the salient points of the rail head of the next scale area of the steel rail by using the scale and the feeler gauge; and if the salient points are not eliminated, the staff repeats the operation of the third step, inputs a new pressing block pressing displacement amount in the platform control computer, continues to press the salient points of the rail head of the steel rail until the salient points are eliminated, and detects and processes the salient points of the rail head of the next area of the steel rail after the straightness of the area of the steel rail meets the standard requirement.
Step six: and (4) the workers perform the repeated operation of the third step, the fourth step and the fifth step on each area of the steel rail to finally finish the treatment of all the salient points in the longitudinal length direction of the steel rail, so that the final flatness of the steel rail can meet the standard requirement.
From the above, it can be seen that the conventional rail pressure straightening method has the following disadvantages:
(1) The execution is very complicated, and the labor intensity of workers is high.
(2) The production efficiency is very low, and the requirement of large-scale production of the steel rails in batches cannot be met.
(3) Due to repeated friction between the feeler gauge and the rail head and the scale, the feeler gauge is easy to cause abrasion of the feeler gauge and the rail head and the scale, so that the measurement of the salient points of the rail head is inaccurate, and the straightness quality of the steel rail is influenced.
(4) The pressing displacement of the pressing block is obtained by workers according to manual experience, and the accuracy is difficult to guarantee. And the pressing displacement of the inaccurate pressing block can directly influence the flatness quality of the steel rail.
(5) Even the displacement value that the briquetting that the staff input pushed down is accurate, nevertheless in the earlier stage of pressure straightening, adopt the manual observation mode, the staff is difficult to judge whether the briquetting has contacted with the rail railhead completely, and then also difficult assurance subsequent pressure straightening in-process, whether the bump position of the effect rail that can be appropriate of the pressure load of briquetting. The reason is that under-contact or over-contact between the pressing block and the rail head of the steel rail at the early stage of straightening can cause that the pressing load of the subsequent pressing block can not act on the convex point position of the steel rail completely, and further cause that the convex point position of the steel rail can not generate the plastic deformation which is actually required, thereby influencing the straightness quality of the steel rail.
Therefore, on the basis of summarizing various defects of the traditional steel rail pressure straightening method, the method for realizing intelligent pressure straightening production of the steel rail is developed, which can ensure the straightness quality of the steel rail, improve the production efficiency, reduce the labor intensity of workers and has very important significance for steel enterprises.
Disclosure of Invention
The invention aims to solve the technical problem of providing a method which can ensure the flatness quality of a steel rail, improve the production efficiency, reduce the labor intensity of workers and realize the pressure straightening intelligent production of the steel rail, namely: on the basis of fully utilizing the hardware equipment of the existing rail pressure straightening machine, the method is optimized, namely: by developing the intelligent control system for rail pressure straightening, the intelligent control of the rail pressure straightening in a production field is realized. The system mainly comprises: the device comprises a steel rail salient point detection module, a steel rail roller way transportation module, a briquetting pressing displacement amount calculation module and a briquetting pressing displacement amount control module. In brief, namely: according to certain scale distance through the laser rangefinder mode, detect the position of the regional bump of different scales of rail in succession, and measure corresponding height, then push down displacement volume calculation model according to the briquetting of installing in the computer, the displacement of pushing down of the high briquetting of corresponding bump is calculated to intelligence, the motion of rethread computer according to the calculated result automatic control briquetting at last, thereby realize the intelligent pressure straightening to the rail, finally reach the straightness quality of guaranteeing the rail, improve rail production efficiency simultaneously, reduce staff intensity of labour's purpose.
The specific technical scheme for solving the technical problems is as follows:
a method for realizing rail intelligent pressure straightening, the method continuously detects the positions of salient points of different scale areas of a rail according to a certain scale distance by a laser ranging mode, and measures the corresponding height; and finally, the computer automatically controls the movement of the pressing block according to the calculation result, thereby realizing the intelligent pressure straightening of the steel rail.
On the basis of making full use of the hardware equipment of the existing steel rail pressure straightening machine, the intelligent control system for steel rail pressure straightening is realized, and the system mainly comprises: the device comprises a steel rail salient point detection module, a steel rail roller way transportation module, a briquetting pressing displacement amount calculation module and a briquetting pressing displacement amount control module.
The steel rail convex point detection module is used for detecting the coordinates and the height of the convex point position of the steel rail in the longitudinal direction;
the steel rail roller way transportation module is used for realizing intelligent transportation of steel rails;
the briquetting pressing displacement calculation module is used for calculating the briquetting pressing displacement;
and the pressing block pressing displacement control module is used for realizing the control of the pressing displacement of the pressing block so as to automatically control the movement of the pressing block.
Wherein:
the steel rail salient point detection module is mainly used for achieving the function of detecting the coordinates and the height of the salient point position of the steel rail in the longitudinal direction. The module mainly comprises: the device comprises a photoelectric switch for detecting the position of a steel rail convex point, a laser range finder, an encoder for detecting the position of the steel rail convex point and a computer for detecting the steel rail convex point. The photoelectric switch for detecting the position of the steel rail salient point is arranged on one side of the steel rail conveying roller way and used for judging whether a steel rail enters a detection area or not; the laser range finder is arranged right above the rail head of the steel rail, and the detection direction of the laser range finder is vertical to the detection direction of the photoelectric switch for detecting the position of the convex point of the steel rail; the encoder for detecting the position of the steel rail salient point is arranged on the conveying roller way and used for detecting the coordinate of the steel rail salient point in the longitudinal direction of the steel rail. It is important to explain that the laser range finder, the photoelectric switch for detecting the position of the steel rail salient point and the encoder for detecting the position of the steel rail salient point are required to be arranged on the same plane vertical to the conveying direction of the steel rail roller way; in addition, the computer for detecting the steel rail salient points is connected with the photoelectric switch for detecting the steel rail salient point positions, the laser range finder and the encoder for detecting the steel rail salient point positions, receives signals sent by the photoelectric switch, the laser range finder and the encoder for detecting the steel rail salient point positions, performs corresponding calculation and signal transmission operation, and is used for calculating and recording the height of the steel rail salient points and corresponding position coordinates.
The steel rail roller way transportation module is mainly used for realizing the intelligent transportation function of the steel rail. The module is characterized in that a photoelectric switch for steel rail roller way conveying, an encoder for steel rail roller way conveying and a computer for steel rail roller way conveying control are added on the basis of original roller way hardware. The photoelectric switch for steel rail roller way conveying is arranged on one side of the steel rail roller way and used for judging whether a steel rail enters a roller way conveying control area or not; the encoder for conveying the steel rail roller way is used for detecting whether the position of the convex point of the steel rail enters the position right below the pressing block. It is important to point out that the photoelectric switch for rail roller way conveying and the encoder for rail roller way conveying need to be installed on the same plane perpendicular to the conveying direction of the rail roller way, and the distance between the encoder for rail roller way conveying and the pressure straightener pressing block is smaller than 1m. The computer for controlling the steel rail roller way conveying is mainly used for receiving steel rail position data fed back by the photoelectric switch and the encoder for the steel rail roller way conveying in real time for the steel rail roller way conveying, and simultaneously receiving longitudinal coordinate data of the steel rail salient points transmitted by the computer for detecting the steel rail salient points, so that whether the conveying roller way conveys the salient point positions of the steel rails to the position below a pressing block of the pressure straightening machine or not is judged in real time. In addition, after the computer for controlling the conveying of the steel rail roller way judges that the convex point position of the steel rail is conveyed to the position below the pressing block, the computer also controls the start/stop of the conveying roller way to lay a solid foundation for the subsequent steel rail pressure straightening work.
In addition, it should be emphasized that the distance between the photoelectric switch for detecting the position of the steel rail convex point and the photoelectric switch for conveying the steel rail roller way at least needs to be more than 1.1 times of the longitudinal total length of the steel rail.
The briquetting depression displacement calculation module mainly comprises a computer for calculating briquetting depression displacement and a briquetting depression displacement calculation model arranged in the computer. When the computer for controlling the steel rail roller bed conveying judges that the convex point position of the steel rail is conveyed to the position below the briquetting, the height value of the convex point is automatically sent to the computer for calculating the briquetting pressing displacement amount, and after the computer receives related data, the computer calculates the briquetting pressing displacement amount corresponding to the convex point height of the steel rail by using a built-in briquetting pressing displacement amount calculation model.
The briquetting is pushed down displacement volume control module mainly be on make full use of the original hydraulic system's of pressure straightening machine basis, install two pressure sensor on hydraulic system's the pneumatic cylinder upper and lower chamber, promptly: the upper cavity pressure sensor and the lower cavity pressure sensor are used for replacing the lower cavity oil outlet electromagnetic switch valve with a lower cavity oil outlet electromagnetic regulating valve. In addition, the developed briquette pressure reduction control model is installed on the raw hydraulic control computer. The model is characterized in that a computer can collect oil pressures of an upper cavity and a lower cavity of a hydraulic cylinder in a hydraulic system in real time, and whether a pressing block is just in contact with the surface of a rail head at a convex point position of a steel rail in the early stage of pressure straightening is judged by analyzing changes of the upper cavity and the lower cavity; secondly, the device can automatically receive the calculated data of the pressing block pressing displacement sent by the computer for calculating the pressing block pressing displacement, and automatically realize the pressing and lifting of the pressing block according to the feedback result of the pressing block displacement sensor; and thirdly, after the hydraulic control computer finishes the pressing operation of the pressing block, the hydraulic control computer can automatically send signals to the computer for controlling the conveying of the steel rail roller way, so that the roller way can automatically convey the next salient point of the steel rail to the lower part of the pressing block for next steel rail pressure straightening.
Foretell rail pressure straightening intelligence control system, staff's execution pressure straightening machine's original mode of operation, promptly: manually setting the length of the scale, adjusting the distance between the two cushion blocks to be within the range of 0.5-1 m, and executing the following operation steps after determining that the piston in the hydraulic system reaches the highest point:
step 1: the staff manually inputs the length of the scale, the processing height of the steel rail, the height of the laser range finder from the center of the conveying roller and the radius of the conveying roller into a computer for detecting the salient points of the steel rail, and inputs the distance data of the two cushion blocks into a computer for calculating the pressing displacement of the pressing block.
Step 2: the worker clicks the "start" button. At this time, the computer for detecting the salient points of the steel rail starts to start the driving motor and drives the conveying roller to rotate, so that the steel rail is driven to move. In addition, the computer for detecting the steel rail salient points can clear the detection values of the encoder for detecting the positions of the steel rail salient points and the encoder for conveying the steel rail roller way.
And step 3: after photoelectric switch for rail bump position detection detected the rail, can be automatically to rail bump detect with computer-transmitted signal, rail bump detect with computer-received signal after, can start laser range finder and rail bump encoder for position detection rapidly, detect the bump height of rail. The specific method comprises the following steps: the laser range finder continuously emits laser beams to the top of the steel rail, records the time of the laser beam return in real time, and feeds the time back to the computer for steel rail bump detection in real time. The computer for steel rail bump detection automatically divides a plurality of detection length periods according to the length of a scale set by a worker according to the data fed back by the encoder for steel rail bump position detection, and continuously calculates the distance from the steel rail top to the laser range finder in each length period, namely:
Figure BDA0003031276650000081
in the formula: h 0 The distance from the top of the steel rail to the laser range finder is as follows: m;
v-speed of light, unit: m/s;
t-time from the emission of the laser beam to the reception of the laser beam by the laser rangefinder, in units: and s.
In addition, the computer for detecting the steel rail salient points continuously records the distance from the rail top of each point of the steel rail to the laser range finder and the corresponding longitudinal length coordinate of the steel rail in each length period in real time.
Then, rail bump detects with the computer search and notes the minimum distance value of rail crest to laser range finder in every length cycle that detects to note the rail longitudinal length coordinate that this value corresponds, again according to rail machining height, the height and the radius of conveying roller of laser range finder apart from the conveying roller center, calculate the height of rail bump in every length cycle, promptly:
ΔH＝H-R-H rail -H 0
In the formula: Δ H — height of rail bump, unit: m;
h-height of the laser range finder from the center of the conveying roller, unit: m;
H rail -rail working height, unit: m;
r-radius of the conveyor roller, unit: and m is selected.
And 4, step 4: when the photoelectric switch for detecting the position of the steel rail salient point detects that the steel rail is separated, the photoelectric switch can automatically send information to the computer for detecting the steel rail salient point. After the information is collected by the computer for detecting the steel rail salient points, the data of the encoder for detecting the positions of the steel rail salient points are cleared, and simultaneously, the height and the longitudinal length coordinate of the steel rail salient points in each detection period in the longitudinal direction of the steel rail are automatically sent to the computer for controlling the conveying of the steel rail roller way.
And 5: when the photoelectric switch for conveying the steel rail roller way detects the steel rail, the photoelectric switch can automatically send signals to the computer for controlling the conveying of the steel rail roller way. After receiving the signal, the computer for controlling the steel rail roller way conveying can receive data collected by the encoder for steel rail roller way conveying in real time and judge whether the salient point in a certain length period of the steel rail is just below the center of the pressing block.
The specific formula for judgment is:
S＝S T +S 0 -S inertial force measuring device
In the formula: s-data fed back by the encoder for steel rail roller way conveying, unit: m;
S T -rail longitudinal length coordinate in a certain length period, unit: m;
S 0 the distance from the center of the pressing block to the encoder for conveying the steel rail roller way is as follows: m;
S inertia apparatus -after driving motor stopped operation, the distance that the rail conveying roller continued to rotate under the inertia effect and caused the rail to remove, the unit: and m is selected.
After the computer for controlling the conveying of the steel rail roller way detects that the data fed back by the encoder for conveying the steel rail roller way is equal to S, the conveying roller can automatically stop rotating by closing the driving motor, and then the steel rail is stopped from moving. Thereby ensuring that the salient point of the steel rail in a certain length period is just below the center of the pressing block.
Step 6: when the driving motor is turned off, the computer for controlling the steel rail roller way conveying automatically sends the height value of the salient point in the corresponding length period of the steel rail to the computer for calculating the pressing displacement of the pressing block. After receiving the data, the computer for calculating the displacement automatically calculates the actual pressing amount of the briquetting according to a specifically set scale, and the specific calculation model is as follows:
when the scale is 2 m:
Figure BDA0003031276650000091
when the scale is 1 m:
Figure BDA0003031276650000092
wherein z is the bump height of the railhead in a certain length period, unit: mm;
x-spacer spacing, unit: mm;
y-displacement of press block depression, unit: mm.
The displacement calculation computer obtains the pressing displacement data of the pressing block through inverse algorithm, and sends the specific calculation result to the original hydraulic control computer. In addition, the computer for controlling the steel rail roller way conveying also sends a driving motor stop signal to the original hydraulic control computer.
And 7: hydraulic control computer is after receiving driving motor stop signal, can delay 5 ~ 10s, original hydraulic system includes epicoele oil feed electromagnetic control valve, cavity oil feed electromagnetic control valve down, the epicoele solenoid valve that produces oil, epicoele oil feed electromagnetic control valve, cavity oil feed electromagnetic control valve down, the epicoele solenoid valve that produces oil is respectively through epicoele oil feed electromagnetic control valve PLC, cavity oil feed electromagnetic control valve PLC down, the epicoele solenoid valve PLC that produces oil connects the hydraulic control computer, and combine cavity oil solenoid valve and cavity oil solenoid valve PLC that produces oil down, then can carry out following operation to original hydraulic system:
the original hydraulic system will then be operated as follows:
(1) The hydraulic control computer sends a command signal to an upper cavity oil inlet electromagnetic regulating valve PLC, opens the upper cavity oil inlet electromagnetic regulating valve, sends a command signal to an upper cavity oil outlet electromagnetic switch valve PLC, closes the upper cavity oil outlet electromagnetic switch valve, and then hydraulic oil enters an upper cavity of the hydraulic cylinder under the action of external pressure; meanwhile, the lower cavity oil inlet electromagnetic regulating valve PLC sends out a command signal, the lower cavity oil inlet electromagnetic regulating valve is closed, the lower cavity oil outlet electromagnetic regulating valve PLC sends out a command signal, the lower cavity oil outlet electromagnetic regulating valve is opened, and at the moment, the piston can drive the pressing block to slowly move downwards. Meanwhile, the hydraulic control computer can acquire the oil pressure of the upper cavity and the lower cavity of the hydraulic cylinder fed back by the upper cavity pressure sensor and the lower cavity pressure sensor in real time. When the hydraulic control computer detects that the lower cavity oil pressure fed back by the lower cavity pressure sensor is as follows:
Figure BDA0003031276650000101
in the formula: p Lower cavity -data fed back by the lower cavity pressure sensor, in units: pa;
P upper chamber -data fed back by the upper chamber pressure sensor in units: pa;
R activity device Piston radius, unit: m;
R rod Link radius, unit: m;
R rod Link radius, unit: m;
m activity Piston mass, unit: kg;
m rod -connecting rod mass, unit: kg;
m pressing block -briquette mass, unit: kg;
g-acceleration of gravity, unit: m/s 2 。
At this point, it is indicated that the compact has been fully contacted with the rail head surface.
And 8: the hydraulic control computer clears the data that the displacement sensor feedback was returned to continue to order about the briquetting and push down. When the data fed back by the displacement sensor is consistent with the pressing displacement data of the pressing block, the pressure straightening work of the steel rail salient point at the position is finished. At the moment, the hydraulic control computer sends a command signal to the upper cavity oil inlet electromagnetic regulating valve PLC, closes the upper cavity oil inlet electromagnetic regulating valve, sends a command signal to the upper cavity oil outlet electromagnetic switch valve PLC, and opens the upper cavity oil outlet electromagnetic switch valve; meanwhile, the lower cavity oil inlet electromagnetic regulating valve PLC sends out a command signal, the lower cavity oil inlet electromagnetic regulating valve is opened, the lower cavity oil outlet electromagnetic regulating valve PLC sends out a command signal, the lower cavity oil outlet electromagnetic regulating valve is closed, at the moment, hydraulic oil enters the lower cavity of the hydraulic cylinder under the action of external pressure, and the piston drives the pressing block to move upwards. When the hydraulic control computer detects that the piston rises to the highest position through the displacement sensor, the hydraulic control computer sends a command signal to the upper cavity oil outlet electromagnetic switch valve PLC and closes the upper cavity oil outlet electromagnetic switch valve; meanwhile, the lower cavity oil inlet electromagnetic regulating valve PLC sends out a command signal, and the lower cavity oil inlet electromagnetic regulating valve is closed.
And step 9: after the hydraulic control computer completes the operation, the hydraulic control computer sends an instruction to the computer for controlling the conveying of the steel rail roller bed. And after receiving the instruction, the computer for controlling the steel rail roller way conveying restarts the driving motor to drive the conveying rollers to rotate, so that the steel rail is continuously conveyed, the operation of the steps 5 to 8 is circularly carried out, and the number of the completed length periods is recorded.
Step 10: when the computer for controlling the conveying of the steel rail roller table detects that the pressure straightening of the whole length period is completed, the computer sends an instruction to the driving motor to stop the rotation of the driving motor and the conveying roller, so that the transportation of the steel rail is stopped. And simultaneously, the computer sends signals to the computer for detecting the salient points of the steel rail. At the moment, the computer for detecting the steel rail convex points clears the data of the encoder for detecting the positions of the steel rail convex points, and meanwhile clears the height results and the longitudinal length coordinates of the steel rail convex points which are stored before.
Step 11: after observing that the whole steel rail is subjected to pressure straightening, a worker can manually control the driving motor and the conveying roller to convey the steel rail out of the pressure straightening machine and wait for the pressure straightening of the next steel rail.
The invention has the beneficial effects that:
on the basis of fully utilizing hardware equipment of the steel rail pressure straightening machine, the intelligent pressure straightening production of the steel rail is realized by developing a steel rail salient point detection module, a steel rail roller way transportation module, a briquetting pressing displacement amount calculation module and a briquetting pressing displacement amount control module, so that the flatness quality of the steel rail is effectively improved, the production efficiency is improved, the labor intensity of workers is reduced, and the intelligent pressure straightening production system has great popularization and use values in the industry.
Drawings
FIG. 1 is a front view of a schematic diagram of a rail bump detection module;
FIG. 2 is a top view of a schematic structural diagram of a rail bump detection module and a rail roller transportation module;
FIG. 3 is a schematic view of a control module for controlling the pressing displacement of a pressing block;
FIG. 4 is a schematic control diagram of the intelligent control system for rail pressure straightening;
labeled as: 1. conveying roller, 2, driving motor, 3, steel rail, 4, laser range finder, 5, photoelectric switch for steel rail salient point position detection, 6, encoder for steel rail salient point position detection, 7, computer for steel rail salient point detection, 8, photoelectric switch for steel rail roller way conveying, 9, encoder for steel rail roller way conveying, 10, computer for steel rail roller way conveying control, 11, computer for calculating pressing displacement of pressing block, 12, pressing block, 13, hydraulic cylinder, 14, piston, 15, connecting rod, 16, pressing block displacement sensor, 17, upper cavity pressure sensor, 18, lower cavity pressure sensor, 19, upper cavity oil inlet electromagnetic regulating valve, 20, lower cavity oil inlet electromagnetic regulating valve, 21, upper cavity oil outlet electromagnetic switching valve, 22, lower cavity oil outlet electromagnetic regulating valve, 23, upper cavity oil inlet electromagnetic regulating valve PLC,24, lower cavity oil inlet electromagnetic regulating valve, 25, upper cavity oil outlet electromagnetic switching valve, 26, lower cavity oil outlet electromagnetic regulating valve PLC,27, hydraulic control computer.
Detailed Description
The invention develops an intelligent control system for rail pressure straightening on the basis of fully utilizing the hardware equipment of the conventional rail pressure straightening machine. The system mainly comprises: the device comprises a steel rail salient point detection module, a steel rail roller way transportation module, a briquetting pressing displacement amount calculation module and a briquetting pressing displacement amount control module. Wherein:
the steel rail salient point detection module is mainly used for achieving the function of detecting the coordinates and the height of the salient point position of the steel rail 3 in the longitudinal direction. The module mainly comprises: the device comprises a laser range finder 4, a photoelectric switch 5 for detecting the position of the steel rail salient point, an encoder 6 for detecting the position of the steel rail salient point and a computer 7 for detecting the steel rail salient point. The photoelectric switch 5 for detecting the position of the steel rail salient point is arranged on one side of the steel rail conveying roller way 1 and is used for judging whether a steel rail 3 enters a detection area or not; the laser range finder 4 is arranged right above the rail head of the steel rail 3, and the detection direction of the laser range finder is vertical to the detection direction of the photoelectric switch 5 for detecting the position of the convex point of the steel rail; the encoder 6 for detecting the position of the steel rail salient point is arranged on the conveying roller way 1 and used for detecting the coordinate of the steel rail 3 salient point in the longitudinal direction of the steel rail 3. It is important to explain that the laser range finder 4, the photoelectric switch 5 for detecting the position of the steel rail salient point and the encoder 6 for detecting the position of the steel rail salient point are required to be arranged on the same plane vertical to the conveying direction of the steel rail roller way; in addition, the computer 7 for detecting the steel rail salient point is connected with the photoelectric switch 5 for detecting the steel rail salient point position, the laser distance meter 4 and the encoder 6 for detecting the steel rail salient point position, receives the signals sent by the photoelectric switch, the laser distance meter and the encoder and performs corresponding calculation and signal transmission operation, and is used for calculating and recording the height of the salient point of the steel rail 3 and corresponding position coordinates.
The steel rail roller way transportation module is mainly used for realizing the intelligent transportation function of the steel rail 3. The module is formed by adding a photoelectric switch 8 for steel rail roller conveying, an encoder 9 for steel rail roller conveying and a computer 10 for steel rail roller conveying control on the basis of original roller hardware. The photoelectric switch 8 for steel rail roller way conveying is arranged on one side of the steel rail conveying roller way 1 and is used for judging whether a steel rail 3 enters a roller way conveying control area or not; the encoder 9 for rail roller way conveying is used for detecting whether the salient point position of the rail 3 enters the position right below the pressing block 12. It should be emphasized that the photoelectric switch 8 for rail roller transportation and the encoder 9 for rail roller transportation need to be installed on the same plane perpendicular to the rail roller transportation direction, and the distance between the encoder 9 for rail roller transportation and the pressure straightener pressing block 12 is less than 1m. The computer 10 for controlling the rail roller way transportation is mainly used for receiving the position data of the steel rail 3 fed back by the photoelectric switch 8 for rail roller way transportation and the encoder 9 for rail roller way transportation in real time, and simultaneously receiving the longitudinal coordinate data of the salient points of the steel rail 3 transmitted by the computer 7 for detecting the salient points of the steel rail, thereby judging whether the transportation roller way transports the salient points of the steel rail 3 to the lower part of the pressure straightener pressing block 12 in real time. In addition, after the computer 10 for controlling the rail roller bed conveying determines that the convex point position of the rail 3 has been conveyed below the pressing block 12, the computer will control the start/stop of the conveying roller bed 1 to lay a solid foundation for the subsequent pressure straightening work of the rail 3.
It should be noted that the distance between the photoelectric switch 5 for detecting the rail bump position and the photoelectric switch 8 for transporting the rail roller table needs to be at least 1.1 times, preferably 1.5 to 3 times, the total length of the rail 3 in the longitudinal direction.
The briquetting depression displacement amount calculation module mainly comprises a computer 11 for calculating briquetting depression displacement amount and a briquetting depression displacement amount calculation model built in the computer. When the computer 10 for controlling the rail roller bed transportation judges that the convex point position of the rail 3 has been transported to the lower side of the briquette 12, the height value of the convex point is automatically sent to the computer 11 for calculating the briquette depressing displacement amount, and after the computer 11 receives the relevant data, the computer 11 calculates the briquette depressing displacement amount corresponding to the convex point height of the rail 3 by using the built-in briquette depressing displacement amount calculation model.
The briquetting is pushed down displacement volume control module mainly be on make full use of the original hydraulic system's of pressure straightening machine basis, install two pressure sensor on hydraulic system's the pneumatic cylinder upper and lower chamber, promptly: an upper cavity pressure sensor 17 and a lower cavity pressure sensor 18, and simultaneously the lower cavity oil outlet electromagnetic switch valve is replaced by a lower cavity oil outlet electromagnetic regulating valve 22. Further, the developed briquette pressure reduction control model is installed on the master hydraulic control computer 27. The model is characterized in that firstly, a computer can collect oil pressure of an upper cavity and a lower cavity of a hydraulic cylinder in a hydraulic system in real time, and whether a pressing block 12 is just in contact with the surface of a rail head at a convex point position of a steel rail 3 in the early stage of pressure straightening is judged by analyzing changes of the upper cavity and the lower cavity; secondly, the computer can automatically receive the calculated data of the briquetting pressing displacement sent by the computer 11 for calculating the briquetting pressing displacement, and automatically realize the pressing and lifting of the briquetting 12 according to the feedback result of the briquetting displacement sensor 16; thirdly, after the pressing operation of the pressing block 12 is completed, the hydraulic control computer 27 can automatically send a signal to the computer 10 for controlling the rail roller bed conveying, so that the conveying roller 1 can automatically convey the next salient point of the rail 3 to the lower part of the pressing block 12 for next rail pressure straightening.
Above-mentioned rail pressure straightening intelligence control system, staff are in the original mode of operation of execution pressure straightening machine, promptly: the length of the scale is manually set, the distance between the two cushion blocks is adjusted to be within the range of 0.5 m-1 m, and after the piston 14 in the hydraulic system is determined to reach the highest point, the following operation steps are executed:
step 1: the staff manually inputs the length of the scale, the processing height of the steel rail 3, the height of the laser distance meter 4 from the center of the conveying roller 1 and the radius of the conveying roller 1 into the computer 7 for detecting the salient point of the steel rail, and inputs the distance data of the two cushion blocks into the computer 11 for calculating the pressing displacement of the pressing block.
And 2, step: the worker clicks the "start" button. At this time, the rail bump detection computer 7 starts to start the driving motor 2, and drives the conveying roller 1 to rotate, thereby driving the rail 3 to move. The rail bump detection computer 7 also clears the detection values of the rail bump position detection encoder 6 and the rail roller conveyance encoder 9.
And step 3: when the photoelectric switch 5 for detecting the position of the steel rail salient point detects the steel rail 3, the photoelectric switch automatically sends a signal to the computer 7 for detecting the steel rail salient point. After receiving the signal, the computer 7 for detecting the steel rail salient point can quickly start the laser range finder 4 and the encoder 6 for detecting the steel rail salient point position to detect the salient point height of the steel rail 3. The specific method comprises the following steps: the laser range finder 4 continuously emits laser beams to the rail top of the steel rail 3, records the time of laser beam return in real time, and feeds back the time to the computer 7 for steel rail bump detection in real time. The computer 7 for detecting the steel rail salient points automatically divides a plurality of detection length periods according to the data fed back by the encoder 6 for detecting the steel rail salient point positions and the length of a scale set by a worker, and continuously calculates the distance from the top of the steel rail 3 to the laser range finder 4 in each length period, namely:
Figure BDA0003031276650000141
in the formula: h 0 The distance from the rail top of the steel rail 3 to the laser range finder 4 is as follows: m;
v-speed of light, unit: m/s;
t-time from the emission of the laser beam to the reception of the laser beam by the laser range finder 4, unit: and s.
In addition, the computer 7 for detecting the steel rail salient points continuously records the distance from the top of each point of the steel rail 3 to the laser range finder 4 and the corresponding longitudinal length coordinate of the steel rail 3 in each length period in real time.
Then, the computer 7 for detecting the salient point of the steel rail searches and records the minimum distance value from the rail top of the steel rail 3 to the laser range finder 4 in each detection length period, records the longitudinal length coordinate of the steel rail 3 corresponding to the minimum distance value, and calculates the salient point height of the steel rail 3 in each length period according to the processing height of the steel rail 3, the height of the laser range finder 4 from the center of the conveying roller 1 and the radius of the conveying roller 1, namely:
ΔH＝H-R-H rail -H 0
In the formula: Δ H — height of 3 salient points of steel rail, unit: m;
h-height of the laser range finder 4 from the center of the conveying roller 1, unit: m;
H rail -rail 3 machining height, unit: m;
r — radius of the conveyor roller 1, unit: and m is selected.
And 4, step 4: when the photoelectric switch 5 for detecting the position of the rail salient point detects that the rail 3 has left, the information is automatically sent to the computer 7 for detecting the rail salient point. After the information is collected by the steel rail salient point detection computer 7, the data of the steel rail salient point position detection encoder 6 is cleared, and simultaneously, the height and the longitudinal length coordinate of the steel rail 3 salient point in each detection period in the longitudinal direction of the steel rail 3 are automatically sent to the steel rail roller way conveying control computer 10.
And 5: when the photoelectric switch 8 for rail roller bed conveyance detects the rail 3, it will automatically send a signal to the computer 10 for rail roller bed conveyance control. After receiving the signal, the computer 10 for controlling the conveying of the steel rail roller way receives the data acquired by the encoder 9 for conveying the steel rail roller way in real time, and judges whether the salient point in a certain length period of the steel rail 3 is just below the center of the pressing block 12.
The specific formula for judgment is:
S＝S T +S 0 -S inertial force measuring device
In the formula: s-data fed back by the encoder 9 for rail roller way transportation, unit: m;
S T -longitudinal length coordinates of rail 3 in a certain length period, unit: m;
S 0 the distance from the center of the pressing block 12 to the encoder 9 for conveying the steel rail roller way is as follows: m;
S inertial force measuring device After the driving motor 2 stops operating, the steel rail conveying roller 1 continues to rotate under the action of inertia to cause the movement distance of the steel rail 3, unit: and m is selected.
After the computer 10 for controlling the steel rail roller bed conveying detects that the data fed back by the encoder 9 for steel rail roller bed conveying is equal to S, the driving motor 2 is automatically turned off to stop the conveying roller 1 from rotating, and then the steel rail 3 is stopped from moving. Thereby ensuring that the salient point of the rail 3 for a certain length period is just below the centre of the compact 12.
Step 6: when the driving motor 2 is turned off, the computer 10 for controlling the rail roller bed transportation automatically sends the bump height value within the corresponding length period of the rail 3 to the computer 11 for calculating the briquetting reduction displacement. After receiving the data, the computer 11 for calculating the briquette depression displacement automatically calculates the actual depression of the briquette 12 according to a specifically set scale, and the specific calculation model is as follows:
when the scale is 2 m:
Figure BDA0003031276650000161
when the scale is 1 m:
Figure BDA0003031276650000162
in the formula, z is the height of the salient point in a certain length period of the rail head of the steel rail 3, and the unit is as follows: mm;
x-spacer spacing, unit: mm;
y-displacement of depression of the press block 12, unit: mm.
The press-down displacement amount of the press block is calculated by the computer 11 through an inverse algorithm to obtain press-down displacement data of the press block 12, and the specific calculation result is sent to the original hydraulic control computer 27. In addition, the rail table transport control computer 10 also transmits a stop signal of the drive motor 2 to the original hydraulic control computer 27.
And 7: hydraulic control computer 27 is after receiving driving motor 2 stop signal, can delay 5 ~ 10s, original hydraulic system includes epicoele oil feed electromagnetic adjusting valve 19, cavity oil feed electromagnetic adjusting valve 20 down, epicoele electromagnetic switch valve 21 that produces oil, epicoele oil feed electromagnetic adjusting valve 19, cavity oil feed electromagnetic adjusting valve 20 down, epicoele electromagnetic switch valve 21 that produces oil is respectively through epicoele oil feed electromagnetic adjusting valve PLC 23, cavity oil feed electromagnetic adjusting valve PLC24 down, epicoele electromagnetic switch valve PLC 25 that produces oil connects hydraulic control computer 27, and combine cavity oil discharge electromagnetic adjusting valve 22 and cavity oil discharge electromagnetic adjusting valve PLC 26 down, then can carry out following operation to original hydraulic system:
the computer sends a command signal to the upper cavity oil inlet electromagnetic regulating valve PLC 23, opens the upper cavity oil inlet electromagnetic regulating valve 19, sends a command signal to the upper cavity oil outlet electromagnetic switch valve PLC 25, closes the upper cavity oil outlet electromagnetic switch valve 21, and at the moment, hydraulic oil enters the upper cavity of the hydraulic cylinder 13 under the action of external pressure; meanwhile, the lower cavity oil inlet electromagnetic regulating valve PLC24 sends out a command signal, the lower cavity oil inlet electromagnetic regulating valve 20 is closed, the lower cavity oil outlet electromagnetic regulating valve PLC 26 sends out a command signal, the lower cavity oil outlet electromagnetic regulating valve 22 is opened, and at the moment, the piston 14 drives the pressing block 12 to slowly move downwards. Meanwhile, the hydraulic control computer 27 collects the oil pressures of the upper and lower cavities of the hydraulic cylinder 13 fed back by the upper cavity pressure sensor 17 and the lower cavity pressure sensor 18 in real time. When the hydraulic control computer 27 detects that the lower cavity oil pressure fed back by the lower cavity pressure sensor 18 is:
Figure BDA0003031276650000171
in the formula: p Lower cavity Data fed back by the lower chamber pressure sensor 18, in units: pa;
P upper chamber The data fed back by the upper chamber pressure sensor 17, unit: pa;
R activity Radius of the piston 14, in units: m;
R rod Radius of the connecting rod 15, unit: m;
m activity device The mass of the piston 14, in units: kg;
m rod Mass of the connecting rod 15, in units: kg;
m pressing block The mass of the briquette 12, unit: kg;
g-acceleration of gravity, unit: m/s 2 。
At this point, the compact 12 is shown in full contact with the rail head surface of rail 3.
And step 8: the hydraulic control computer 27 clears the data fed back by the displacement sensor 16 and continues to drive the press block 12 to press down. When the data fed back by the displacement sensor 16 is consistent with the pressing displacement data of the pressing block 12, the pressure straightening work of the convex point of the steel rail 3 at the position is finished. At this time, the hydraulic control computer 27 sends a command signal to the upper cavity oil inlet electromagnetic regulating valve PLC 23, closes the upper cavity oil inlet electromagnetic regulating valve 19, sends a command signal to the upper cavity oil outlet electromagnetic switch valve PLC 25, and opens the upper cavity oil outlet electromagnetic switch valve 21; meanwhile, the lower cavity oil inlet electromagnetic control valve PLC24 sends a command signal, the lower cavity oil inlet electromagnetic control valve 20 is opened, the lower cavity oil outlet electromagnetic control valve PLC 26 sends a command signal, the lower cavity oil outlet electromagnetic control valve 22 is closed, and at this time, hydraulic oil enters the lower cavity of the hydraulic cylinder 13 under the action of external pressure, so that the piston 14 drives the pressing block 12 to move upwards. When the hydraulic control computer 27 detects that the piston 14 has risen to the highest position through the displacement sensor 16, the hydraulic control computer 27 sends a command signal to the upper cavity oil outlet electromagnetic switch valve PLC 25, and closes the upper cavity oil outlet electromagnetic switch valve 21; meanwhile, the lower cavity oil inlet electromagnetic regulating valve PLC24 sends out a command signal to close the lower cavity oil inlet electromagnetic regulating valve 20.
And step 9: after completing the above operation, the hydraulic control computer 27 sends a command to the rail roller bed conveyance control computer 10. After receiving the instruction, the computer 10 for controlling the rail roller bed transportation restarts the driving motor 2 to rotate the transporting roller 1, so that the rail 3 is transported continuously, the operations of the steps 5 to 8 are cyclically performed, and the number of completed length periods is recorded.
Step 10: when the computer 10 for controlling the rail roller bed transport detects that the pressure straightening for the entire length period is completed, it sends a command to the driving motor 2 to stop the rotation of the driving motor 2 and the transport rollers 1, thereby stopping the transport of the rail 3. At the same time, the computer sends a signal to the computer 7 for detecting the salient point of the rail. At this time, the computer 7 for detecting a rail bump clears the data of the encoder 6 for detecting a rail bump position and clears the bump height result and the vertical length coordinate of the rail 3, which have been stored previously.
Step 11: after observing that the whole steel rail 3 is subjected to pressure straightening, a worker manually controls the driving motor 2 and the conveying roller 1 to convey the steel rail 3 out of the pressure straightening machine and waits for the pressure straightening work of the next steel rail.

Claims (8)

1. A method for realizing intelligent pressure straightening of a steel rail is characterized by comprising the following steps: continuously detecting the positions of salient points in different scale areas of the steel rail according to a certain scale distance in a laser ranging mode, and measuring corresponding heights; then, according to a computer, the pressing displacement of the pressing block under the corresponding height of the convex point is intelligently calculated, and finally, the movement of the pressing block is automatically controlled through the computer, so that the intelligent pressure straightening of the steel rail is realized; the method is realized by an intelligent control system for rail pressure straightening, and the system comprises: rail bump detection module, rail roller way transportation module, briquetting push down displacement calculation module, briquetting push down displacement control module, wherein:
the steel rail salient point detection module is used for detecting the coordinates and the height of the salient point position of the steel rail along the longitudinal direction;
the steel rail roller way transportation module is used for realizing intelligent transportation of steel rails;
the briquetting press-down displacement calculation module is used for calculating the briquetting press-down displacement;
the briquetting pressing displacement control module is used for realizing the control of the briquetting pressing displacement so as to automatically control the movement of the briquetting;
the steel rail bump detection module comprises a laser range finder (4), a photoelectric switch (5) for steel rail bump position detection, an encoder (6) for steel rail bump position detection and a computer (7) for steel rail bump detection, wherein the computer (7) for steel rail bump detection is in information connection with the laser range finder (4), the photoelectric switch (5) for steel rail bump position detection and the encoder (6) for steel rail bump position detection, and the computer (7) for steel rail bump detection is simultaneously connected with the driving motor (2);
the photoelectric switch (5) for detecting the position of the convex point of the steel rail is arranged on one side of a roller way of the conveying roller (1) of the steel rail (3) and used for judging whether the steel rail (3) enters a detection area or not; the laser range finder (4) is arranged right above the rail head of the steel rail (3), and the detection direction of the laser range finder is vertical to the detection direction of the photoelectric switch (5) for detecting the position of the convex point of the steel rail; the encoder (6) for detecting the position of the steel rail salient point is arranged on a roller way of the conveying roller (1) and is used for detecting the coordinate of the steel rail salient point (3) in the longitudinal direction of the steel rail (3);
the laser range finder (4), the photoelectric switch (5) for detecting the position of the steel rail salient point and the encoder (6) for detecting the position of the steel rail salient point are all arranged on the same plane which is vertical to the conveying direction of the steel rail (3).
2. The method for achieving intelligent pressure straightening of the steel rail according to claim 1, wherein the method comprises the following steps:
the steel rail roller way transportation module comprises a photoelectric switch (8) for steel rail roller way transportation, an encoder (9) for steel rail roller way transportation and a computer (10) for steel rail roller way transportation control, the photoelectric switch (8) for steel rail roller way transportation and the encoder (9) for steel rail roller way transportation are in information connection with the computer (10) for steel rail roller way transportation control, and the computer (10) for steel rail roller way transportation control is connected with the computer (7) for steel rail bump detection and the driving motor (2);
the photoelectric switch (8) for steel rail roller way conveying is arranged on one side of the conveying roller (1) of the steel rail (3) and used for judging whether the steel rail (3) enters a roller way conveying control area or not; the encoder (9) for steel rail roller way conveying is used for detecting whether the salient point position of the steel rail (3) enters the position right below the pressing block (12), the photoelectric switch (8) for steel rail roller way conveying and the encoder (9) for steel rail roller way conveying are installed on the same plane perpendicular to the conveying direction of the steel rail (3), and the distance between the encoder (9) for steel rail roller way conveying and the pressing block (12) of the pressure straightening machine is smaller than 1m.
3. The method for achieving intelligent pressure straightening of the steel rail according to claim 2, wherein the method comprises the following steps: the distance between the photoelectric switch (5) for detecting the position of the convex point of the steel rail and the photoelectric switch (8) for conveying the steel rail roller way is more than 1.1 times of the longitudinal total length of the steel rail (3).
4. The method for achieving intelligent pressure straightening of the steel rail according to claim 3, wherein the method comprises the following steps:
the briquetting reduction displacement calculation module comprises a computer (11) for calculating briquetting reduction displacement and a briquetting reduction displacement calculation model built in the computer, and the computer (11) for calculating briquetting reduction displacement is connected with a computer (10) for controlling steel rail roller bed conveying.
5. The method for achieving intelligent pressure straightening of the steel rail according to claim 4, wherein the method comprises the following steps: the briquetting press-down displacement control module comprises an upper cavity pressure sensor (17) and a lower cavity pressure sensor (18) which are respectively installed on a hydraulic cylinder and a lower cavity of an original hydraulic system, and a lower cavity oil outlet electromagnetic regulating valve (22) which is arranged in a lower cavity of the hydraulic cylinder, and a briquetting press-down control model which is installed on an original hydraulic control computer (27), wherein the hydraulic control computer (27) is in information connection with the upper cavity pressure sensor (17), the lower cavity pressure sensor (18), a computer (11) for calculating the briquetting press-down displacement and a driving motor (2), and the lower cavity oil outlet electromagnetic regulating valve (22) is also in information connection with the hydraulic control computer (27) through a lower cavity oil outlet electromagnetic regulating valve PLC (26).
6. The method for achieving intelligent pressure straightening of the steel rail according to claim 5, wherein the method comprises the following steps: the operation process is that the length of the scale is manually set, the distance between the two cushion blocks is adjusted to be within the range of 0.5 m-1 m, and after the piston (14) in the hydraulic system is determined to reach the highest point, the following operation steps are executed:
step 1: the length of a scale, the processing height of a steel rail (3), the height of a laser range finder (4) from the center of a conveying roller (1) and the radius of the conveying roller (1) are manually input into a computer (7) for detecting the convex point of the steel rail by a worker, and the distance data of two cushion blocks are input into a computer (11) for calculating the pressing displacement of a pressing block;
step 2: a worker clicks a 'start' button, at the moment, the computer (7) for detecting the salient points of the steel rail starts to start the driving motor (2) and drives the conveying roller (1) to rotate, so that the steel rail (3) is driven to move; in addition, the computer (7) for detecting the steel rail salient points also clears the detection values of the encoder (6) for detecting the steel rail salient points and the encoder (9) for conveying the steel rail roller way;
and step 3: when the photoelectric switch (5) for detecting the position of the steel rail salient point detects the steel rail (3), the photoelectric switch can automatically send a signal to the computer (7) for detecting the steel rail salient point, and after the computer (7) for detecting the steel rail salient point receives the signal, the laser range finder (4) and the encoder (6) for detecting the position of the steel rail salient point can be rapidly started to detect the height of the salient point of the steel rail (3);
and 4, step 4: when the photoelectric switch (5) for detecting the position of the steel rail salient point detects that the steel rail (3) leaves, the photoelectric switch can automatically send information to the computer (7) for detecting the steel rail salient point, after the computer (7) for detecting the steel rail salient point collects the information, the computer (7) for detecting the position of the steel rail salient point can clear the data of the encoder (6) for detecting the position of the steel rail salient point, and simultaneously automatically send the height and the longitudinal length coordinate of the steel rail salient point (3) in each detection period in the longitudinal direction of the steel rail (3) to the computer (10) for controlling the conveying of a steel rail roller bed;
and 5: when the photoelectric switch (8) for steel rail roller conveying detects a steel rail (3), the photoelectric switch can automatically send a signal to the computer (10) for steel rail roller conveying control, and after receiving the signal, the computer (10) for steel rail roller conveying control can receive data collected by the encoder (9) for steel rail roller conveying in real time and judge whether the salient point in a certain length period of the steel rail (3) is just below the center of the pressing block (12);
and 6: when the driving motor (2) is turned off, the computer (10) for controlling the steel rail roller way conveying can automatically send the bump height value in the corresponding length period of the steel rail (3) to the computer (11) for calculating the briquetting depressing displacement, after the computer (11) for calculating the briquetting depressing displacement receives the data, the actual depressing amount of the briquetting (12) is automatically calculated according to a specifically set scale, and the specific calculation model is as follows:
when the scale is 2 m:
Figure FDA0003718182630000031
when the scale is 1 m:
Figure FDA0003718182630000032
wherein z is the height of the salient point in a certain length period of the rail head of the steel rail (3) in unit: mm;
x-spacer spacing, unit: mm;
y-displacement of depression of the press block (12), unit: mm;
the computer (11) for calculating the pressing displacement of the pressing block calculates the pressing displacement data of the pressing block (12) through an inverse algorithm, and sends a specific calculation result to the original hydraulic control computer (27); in addition, the computer (10) for controlling the steel rail roller way conveying also sends a stop signal of the driving motor (2) to the original hydraulic control computer (27);
and 7: hydraulic control computer (27) is after receiving driving motor (2) stop signal, can delay 5 ~ 10s, original hydraulic system includes epicoele oil feed solenoid valve (19), cavity oil feed solenoid valve (20) down, epicoele oil outlet solenoid valve (21), epicoele oil feed solenoid valve (19), cavity oil feed solenoid valve (20) down, epicoele oil outlet solenoid valve (21) are respectively through epicoele oil feed solenoid valve PLC (23), cavity oil feed solenoid valve PLC (24) down, hydraulic control computer (27) is connected in epicoele oil outlet solenoid valve PLC (25), and combine cavity oil outlet solenoid valve (22) and cavity oil outlet solenoid valve PLC (26) down, then can carry out following operation to original hydraulic system:
the hydraulic control computer (27) sends a command signal to an upper cavity oil inlet electromagnetic regulating valve PLC (23), opens an upper cavity oil inlet electromagnetic regulating valve (19), sends a command signal to an upper cavity oil outlet electromagnetic switch valve PLC (25), closes an upper cavity oil outlet electromagnetic switch valve (21), and at the moment, hydraulic oil enters an upper cavity of the hydraulic cylinder (13) under the action of external pressure; simultaneously, down chamber oil inlet electromagnetic control valve PLC (24) sends command signal, close lower chamber oil inlet electromagnetic control valve (20), down chamber oil outlet electromagnetic control valve PLC (26) sends command signal, open lower chamber oil outlet electromagnetic control valve (22), original hydraulic system's piston (14) can drive briquetting (12) and slowly move down this moment, hydraulic control computer (27) can gather on the pneumatic cylinder (13) that epicoele pressure sensor (17) and lower chamber pressure sensor (18) feed back in real time simultaneously, lower chamber oil pressure, the cavity of resorption oil pressure size that detects lower chamber pressure sensor (18) feedback when hydraulic control computer (27) does:
Figure FDA0003718182630000041
in the formula: p Lower cavity -data fed back by the lower chamber pressure sensor (18) in units of: pa;
P upper chamber -data fed back by the upper chamber pressure sensor (17) in units of: pa;
R activity device -radius of the piston (14), in units: m;
R rod Radius of the connecting rod (15), unit: m;
m activity device -mass of the piston (14), in units: kg;
m rod -mass of the connecting rod (15), in units: kg;
m pressing block -mass of the compact (12), in units: kg;
g-acceleration of gravity, unit: m/s 2 ；
At the moment, the pressing block (12) is completely contacted with the rail head surface of the steel rail (3);
and 8: the hydraulic control computer (27) clears the data fed back by the displacement sensor (16) in the original hydraulic system and continues to drive the pressing block (12) to press down, when the data fed back by the displacement sensor (16) is consistent with the pressing displacement data of the pressing block (12), the pressure straightening work of the salient point of the steel rail (3) at the position is finished, at the moment, the hydraulic control computer (27) sends an instruction signal to the upper cavity oil inlet electromagnetic regulating valve PLC (23), closes the upper cavity oil inlet electromagnetic regulating valve (19), sends an instruction signal to the upper cavity oil outlet electromagnetic switching valve PLC (25), and opens the upper cavity oil outlet electromagnetic switching valve (21); meanwhile, an instruction signal is sent to a lower cavity oil inlet electromagnetic regulating valve PLC (24), a lower cavity oil inlet electromagnetic regulating valve (20) is opened, an instruction signal is sent to a lower cavity oil outlet electromagnetic regulating valve PLC (26), a lower cavity oil outlet electromagnetic regulating valve (22) is closed, at the moment, hydraulic oil enters a lower cavity of a hydraulic cylinder (13) under the action of external pressure, a piston (14) drives a pressing block (12) to move upwards, and when a hydraulic control computer (27) detects that the piston (14) rises to the highest position through a displacement sensor (16), the hydraulic control computer (27) sends an instruction signal to an upper cavity oil outlet electromagnetic switching valve PLC (25) and closes an upper cavity oil outlet electromagnetic switching valve (21); meanwhile, sending a command signal to the lower cavity oil inlet electromagnetic regulating valve PLC (24) and closing the lower cavity oil inlet electromagnetic regulating valve (20);
and step 9: after the hydraulic control computer (27) finishes the operation, sending an instruction to the computer (10) for controlling the steel rail roller way conveying, restarting the driving motor (2) after the computer (10) for controlling the steel rail roller way conveying receives the instruction, promoting the conveying roller (1) to rotate, enabling the steel rail (3) to continue to convey, circularly developing the operation of the steps 5-8, and recording the number of the finished length periods;
step 10: when the computer (10) for controlling the steel rail roller bed conveying detects that the pressure straightening of the whole length period is completed, an instruction is sent to the driving motor (2), and the driving motor (2) and the conveying roller (1) are stopped from rotating, so that the steel rail (3) is stopped from being conveyed; meanwhile, the computer sends a signal to a computer (7) for detecting the steel rail salient point, at the moment, the computer (7) for detecting the steel rail salient point clears the data of the encoder (6) for detecting the steel rail salient point position, and simultaneously clears the previously stored salient point height result and the longitudinal length coordinate of the steel rail (3);
step 11: after observing that the whole steel rail (3) is subjected to pressure straightening, a worker can manually control the driving motor (2) and the conveying roller (1), convey the steel rail (3) out of the pressure straightening machine and wait for the pressure straightening of the next steel rail.
7. The method for achieving intelligent pressure straightening of the steel rail according to claim 6, wherein the method comprises the following steps: in the step 3, the specific method for detecting the bump height of the steel rail (3) comprises the following steps:
laser range finder (4) is continuous to rail (3) railhead transmission laser beam, the time that the real-time recording laser beam returned, and give back to rail bump detection with computer (7) in real time, rail bump detects with computer (7) according to the data of rail bump position detection with encoder (6) feedback, scale length according to the staff has set for, a plurality of detection length cycle is divided out automatically, and calculate rail (3) railhead to the distance of laser range finder (4) in each length cycle in succession, promptly:
Figure FDA0003718182630000061
in the formula: h 0 -distance of rail top of rail (3) to laser range finder (4), unit: m;
v-speed of light, unit: m/s;
t-time of the laser range finder (4) from emitting a laser beam to receiving a laser beam, unit: s;
in addition, the computer (7) for detecting the steel rail salient points continuously records the distance from each point of the steel rail (3) to the laser range finder (4) and the corresponding longitudinal length coordinate of the steel rail (3) in each length period in real time;
then, the computer (7) for detecting the salient point of the steel rail searches and records the minimum distance value from the rail top of the steel rail (3) to the laser range finder (4) in each detection length period, records the longitudinal length coordinate of the steel rail (3) corresponding to the minimum distance value, and calculates the salient point height of the steel rail (3) in each length period according to the processing height of the steel rail (3), the height of the laser range finder (4) from the center of the conveying roller (1) and the radius of the conveying roller (1), namely:
ΔH＝H-R-H rail -H 0
In the formula: delta H-height of salient point of the steel rail (3), unit: m;
h is the height of the laser range finder (4) from the center of the conveying roller (1), and the unit is as follows: m;
H rail -the processing height of the steel rail (3), unit: m;
r-radius of the conveyor roller (1), unit: and m is selected.
8. The method for achieving intelligent pressure straightening of the steel rail according to claim 7, wherein the method comprises the following steps: in the step 5, whether the salient point in a certain length period of the steel rail (3) is just below the center of the pressing block (12) is judged, and the concrete judgment formula is as follows:
the specific formula for judgment is:
S＝S T +S 0 -S inertia apparatus
In the formula: s-data fed back by the encoder (9) for steel rail roller way conveying, unit: m;
S T -longitudinal length coordinates of the rail (3) in a certain length period, in units: m;
S 0 the distance between the center of the pressing block (12) and the encoder (9) for conveying the steel rail roller way is unit：m；
S Inertial force measuring device After the driving motor (2) stops running, the steel rail conveying roller (1) continues to rotate under the action of inertia to cause the movement distance of the steel rail (3), the unit is: m;
after the computer (10) for controlling the steel rail roller way conveying detects that the data fed back by the encoder (9) for conveying the steel rail roller way is equal to S, the conveying roller (1) is stopped to rotate by automatically closing the driving motor (2), and then the steel rail (3) is stopped to move, so that the convex points in a certain length period of the steel rail (3) are ensured to be just below the center of the pressing block (12).
CN202110430511.7A 2021-04-21 2021-04-21 Method for realizing intelligent pressure straightening of steel rail Active CN113319152B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202110430511.7A CN113319152B (en) 2021-04-21 2021-04-21 Method for realizing intelligent pressure straightening of steel rail

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202110430511.7A CN113319152B (en) 2021-04-21 2021-04-21 Method for realizing intelligent pressure straightening of steel rail

Publications (2)

Publication Number Publication Date
CN113319152A CN113319152A (en) 2021-08-31
CN113319152B true CN113319152B (en) 2022-10-28

Family

ID=77413441

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202110430511.7A Active CN113319152B (en) 2021-04-21 2021-04-21 Method for realizing intelligent pressure straightening of steel rail

Country Status (1)

Country Link
CN (1) CN113319152B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115255032B (en) * 2022-07-01 2023-07-18 泰安华鲁锻压工控技术有限公司 Flatness detection system and method for leveler

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2876925A1 (en) * 2004-10-22 2006-04-28 Geismar Ancien Ets L Rolled metal section e.g. rail track, straightening method, involves guiding press to apply required pressing force based on data concerning relation between forces exerted by hammer on track and hammer movement to straighten track
CN101927280A (en) * 2010-09-01 2010-12-29 攀钢集团钢铁钒钛股份有限公司 Method for straightening flatness at end part of steel rail
CN104117554A (en) * 2014-06-30 2014-10-29 辽宁银捷装备科技股份有限公司 Automatic control system and method for high-precision straightening machine
CN105157624A (en) * 2015-05-20 2015-12-16 湖南大学 Combined chord measurement method for longitudinal irregularity of steel rail
CN205684526U (en) * 2016-06-17 2016-11-16 攀钢集团攀枝花钢钒有限公司 Steel rail straightening system
CN112099441A (en) * 2020-08-18 2020-12-18 上海瑞纽机械股份有限公司 Pressure linear control method of four-way numerical control steel rail straightener

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2876925A1 (en) * 2004-10-22 2006-04-28 Geismar Ancien Ets L Rolled metal section e.g. rail track, straightening method, involves guiding press to apply required pressing force based on data concerning relation between forces exerted by hammer on track and hammer movement to straighten track
CN101927280A (en) * 2010-09-01 2010-12-29 攀钢集团钢铁钒钛股份有限公司 Method for straightening flatness at end part of steel rail
CN104117554A (en) * 2014-06-30 2014-10-29 辽宁银捷装备科技股份有限公司 Automatic control system and method for high-precision straightening machine
CN105157624A (en) * 2015-05-20 2015-12-16 湖南大学 Combined chord measurement method for longitudinal irregularity of steel rail
CN205684526U (en) * 2016-06-17 2016-11-16 攀钢集团攀枝花钢钒有限公司 Steel rail straightening system
CN112099441A (en) * 2020-08-18 2020-12-18 上海瑞纽机械股份有限公司 Pressure linear control method of four-way numerical control steel rail straightener

Non-Patent Citations (4)

* Cited by examiner, † Cited by third party
Title
Application of grinding to reduce rail side wear in straight track;Ding J等;《Wear》;20180531;第71-79页 *
PLC在鞍钢大型厂矫直生产过程中的应用;张海燕;《制造业自动化》;20020930(第09期);第6-8页 *
重轨复合矫直参数控制模型;但斌斌等;《机械设计与制造》;20110408(第04期);第153-155页 *
钢轨端部压力矫直的有限元分析;盛艳明等;《重型机械》;20070920(第05期);第56-58页 *

Also Published As

Publication number Publication date
CN113319152A (en) 2021-08-31

Similar Documents

Publication Publication Date Title
CN113319152B (en) Method for realizing intelligent pressure straightening of steel rail
US4135006A (en) Automatic coating weight controls for automatic coating processes
CN201322603Y (en) Bulk material volume measuring device
CN106424326A (en) Full-automatic intelligent track shoe blanking production line
CN201555778U (en) Multiscale large rock mass structural plane direct shear tester
CN207379842U (en) A kind of compressive strength of aerated autoclaved concrete blocks test device
CN102319777A (en) Automatic flexibility compensating device of plate bending roll for ship
CN106955908A (en) Compact thick plate turns over and presses integral type production facility
CN106481676A (en) Hub bearing end-play matching machine
CN210233437U (en) Intelligent material distributor for precast concrete parts
CN108518237B (en) A method of effectively elapsing stroke straightening drag conveyor according to hydraulic support
CN107052088A (en) Thick metal plates Full Automatic Liquid pressure pressure section straightening
CN206810893U (en) Panel turnover machine and flatting mill compact combination formula straightening equipment
CN109397506A (en) A kind of concrete spreader based on laser range sensor pre- scaling method automatically
CN108787799A (en) Steel rail top-bending straightener
CN108955561B (en) Device for measuring surface profile of ballastless track plate
JPS61111799A (en) Rotary type powder compression molding machine
CN206047220U (en) Steel pipe length measuring system device
CN104307764B (en) Constant-velocity universal joint jacket comprehensively-measuring, grouping and engraving machine
CN114440797A (en) Straightening detection device and method suitable for steel rails in whole road section
CN209006461U (en) A kind of Full-automatic section bar bending machine
CN111829475A (en) Plate thickness measuring machine
CN102688895B (en) Steel ingot cone elimination rolling control method for heavy plate mill
CN221414523U (en) Full-automatic infrared leveling machine
CN105219904B (en) A kind of method for surveying charge surface shape in blast

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant