CN113046538A - Control device of online steel rail surface strengthening equipment - Google Patents
Control device of online steel rail surface strengthening equipment Download PDFInfo
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- CN113046538A CN113046538A CN201911376830.3A CN201911376830A CN113046538A CN 113046538 A CN113046538 A CN 113046538A CN 201911376830 A CN201911376830 A CN 201911376830A CN 113046538 A CN113046538 A CN 113046538A
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- steel rail
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- trolley
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 61
- 239000010959 steel Substances 0.000 title claims abstract description 61
- 238000005728 strengthening Methods 0.000 title claims abstract description 31
- 238000001816 cooling Methods 0.000 claims abstract description 9
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 24
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 24
- 229910052786 argon Inorganic materials 0.000 claims description 12
- 230000005540 biological transmission Effects 0.000 claims description 12
- 229910052757 nitrogen Inorganic materials 0.000 claims description 12
- 238000012544 monitoring process Methods 0.000 claims description 11
- 230000008859 change Effects 0.000 claims description 8
- 239000007789 gas Substances 0.000 claims description 8
- 230000006855 networking Effects 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 4
- 238000010276 construction Methods 0.000 abstract description 2
- 238000010791 quenching Methods 0.000 description 13
- 230000000171 quenching effect Effects 0.000 description 13
- 238000005516 engineering process Methods 0.000 description 12
- 238000000034 method Methods 0.000 description 7
- 230000008569 process Effects 0.000 description 6
- 238000004381 surface treatment Methods 0.000 description 4
- 229910000677 High-carbon steel Inorganic materials 0.000 description 3
- 229910001563 bainite Inorganic materials 0.000 description 3
- 229910000734 martensite Inorganic materials 0.000 description 3
- 230000007246 mechanism Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 229910045601 alloy Inorganic materials 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- 238000005275 alloying Methods 0.000 description 2
- 238000005253 cladding Methods 0.000 description 2
- 239000000835 fiber Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000006698 induction Effects 0.000 description 2
- 229910001562 pearlite Inorganic materials 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000005496 tempering Methods 0.000 description 1
Images
Classifications
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/04—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for rails
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/06—Surface hardening
- C21D1/09—Surface hardening by direct application of electrical or wave energy; by particle radiation
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D11/00—Process control or regulation for heat treatments
Abstract
The invention relates to a mobile online processing device for online strengthening treatment and repair of the surface of a steel rail, in particular to a control system of online steel rail surface strengthening equipment, which is characterized by comprising the following components: host computer, center control system, constant current power supply, mass flowmeter and laser instrument, center control system includes: the system comprises a first PLC control module, a second PLC control module and a third PLC control module, wherein an upper computer, a central control system, a constant current power supply, a mass flow meter and a laser are connected by signals, the centralized layout of a laminar plasma generator group, a laminar plasma constant current power supply system, a water path, a gas path and the central control system is arranged on the operation trolley, the connection quantity of cables, water pipes and gas pipes between a container and the trolley is reduced during trolley operation, the construction efficiency is improved, and the central control system is used for performing centralized acquisition and control on various working data of the laminar plasma generator group, the trolley speed control, a cooling system, an air compressor and the like.
Description
Technical Field
The invention belongs to the field of railway steel rail strengthening and repairing, and relates to a mobile online processing device for online strengthening treatment and repairing of the surface of a steel rail, in particular to a control system of online steel rail surface strengthening equipment.
Background
The rail transit is an important traffic facility related to the national civilization, and the steel rail is an important component of the rail transit. As train speeds, capacity and axle weights increase, the quality and service life of the rails also become of particular importance. In the running process of a train, a steel rail directly bears the load of the train and guides wheels to run, and the steel rail is seriously worn by the double actions of impact and friction of the wheels, particularly small-radius curves, turnouts, joints and the like. How to improve the service life of the steel rail becomes one of the keys for reducing the railway operation cost and improving the railway operation efficiency.
In order to prolong the service life of the railway steel rail, three methods are generally adopted at home and abroad: firstly, adopting a full-length quenching process to obtain a fine lamellar pearlite structure; secondly, replacing high-carbon steel with low-alloy high-carbon steel rails or bainite steel, and further improving the strength of the steel rails; thirdly, a high-energy beam surface treatment technology is adopted to improve the surface hardness of the steel rail. In the past years, the full-length rail quenching technology has achieved remarkable effects, and the wear resistance of the rail is respectively improved by 50% (straight track) and 100% (curved track). However, the main disadvantage of the full-length quenching technology is that the surface of the steel rail cannot have martensite or even bainite structures, otherwise, the fracture toughness of the steel rail is greatly reduced, so that accidents such as rail breakage and the like occur in the service process of the steel rail, and the safe operation of the railway is seriously influenced. Therefore, the hardness of the steel rail after full-length quenching is generally controlled to be between Hv320 and 390, and the excavation of the wear resistance potential is close to the limit. Although the strength and the wear resistance of the low-alloy high-carbon steel rail or the bainite steel are greatly improved, the improvement of the strength inevitably leads to the reduction of the fracture toughness of the steel rail, increases the brittle failure risk and the driving safety hidden trouble of the steel rail in the use process, is only applied to a small number of special sections at present, and is not popularized and applied further.
The high energy beam surface treatment technology is one of the metal material surface strengthening technologies which develop rapidly in the last two decades, and comprises the technologies of laser phase change quenching, fused quenching, surface alloying, surface cladding and the like, and the high energy beam surface treatment technology has the common characteristics of high heating speed, small heat affected zone and small workpiece deformation, so that the high energy beam surface treatment technology is expected to replace an induction full-length quenching technology and becomes a new generation of steel rail surface strengthening technology. Research shows that due to the characteristics of high heating speed, high cooling speed, limited depth of a hardened layer, a state of compressive stress of the hardened layer and the like of the laser surface strengthening technology, even if a martensite structure appears on the surface of the steel rail, the toughness of the steel rail cannot be obviously reduced. Particularly, the hardness of the martensite structure is obviously higher than that of the fine lamellar pearlite, so that the upper limit that the surface hardness of the steel rail cannot be higher than Hv390 in the induction full-length quenching process can be broken through, and the surface wear resistance of the steel rail is improved by a new step. In addition, the laser surface quenching technology has the characteristics of convenient regulation and control of depth of a hardened layer, no need of quenching medium, no need of tempering, small deformation of workpieces and the like, so that fixed-point processing can be realized in a production workshop, special mobile equipment can be expected to be developed in consideration of the busy current situation of a railway trunk line, the equipment is carried to a railway site, and the online quenching of the track is completed on the premise of not disassembling the steel rail. The mobile laser processing device for on-line processing has high maneuverability, and can realize the strengthening and toughening and repairing treatment of the surface of the steel rail on the premise of not influencing the normal operation of a train as much as possible.
In the report of the Chinese invention patent document "an online laser processing device for rail surface toughening treatment" (publication number is CN101240367, published as 2008, 08 and 13), an online laser processing device for rail surface toughening treatment is provided, which can complete the laser phase change quenching, fused quenching, alloying and cladding treatment of various rails including a head rail, a bend, a guard wheel rail, a turnout and the like without dismounting the rail and influencing the normal operation of a train, thereby realizing the online strengthening and repairing of the rail. The laser processing equipment is divided into a laser processing vehicle and a power system container. The laser processing vehicle comprises a motion executing mechanism, a laser processing head, a light guide system and a control system, wherein the motion executing mechanism is arranged on a moving trolley; the laser processing vehicle adopts a three-wheel structure, one side of two wheels is provided with a laser processing head, and a light path light inlet of the laser processing head is directly connected with a fiber laser on the container of the power system by adopting a transmission fiber. During actual processing, the laser processing vehicle moves forward along the track direction under the control of the control system, the laser beam is guided to the surface of the steel rail under the action of the light guide system, and the motion executing mechanism drives the laser processing head to swing left and right, so that laser strengthening and repairing processing on the surface of the steel rail is realized. After the laser processing vehicle processes the rail on one side, the laser processing vehicle needs to be turned around and reversed, and laser strengthening and repairing treatment is carried out on the rail on the other side.
The main disadvantages of the laser processing vehicle proposed in the above patent document are that the processing efficiency is low, the laser processing vehicle can only perform laser strengthening and repairing treatment on a single-side steel rail at one time, after one side is finished, the laser processing vehicle needs to be turned around and reversed, and then the other side is processed, and the unit processing efficiency is low (the single side is less than 30 m/h), which seriously affects the processing efficiency when the laser processing is actually performed on the steel rail and is not suitable for the field operation requirement.
Disclosure of Invention
The invention aims to solve the problems in the prior art and provides a control device of online steel rail surface strengthening equipment.
A control system of online steel rail surface strengthening equipment is characterized by comprising: host computer, center control system, constant current power supply, mass flowmeter and laser instrument, center control system includes: the system comprises a first PLC control module, a second PLC control module and a third PLC control module, wherein the upper computer, the central control system, the constant current power supply, the mass flow meter and the laser are connected by signals.
The upper computer communicates with the first PLC control module through a 232 interface, and communicates with the laser, the second PLC control module, the third PLC control module and the wireless transmission RTU device through a bus mode.
The first PLC control module is used for performing start-stop control and flow and temperature signal acquisition on a cooling system in the container; carrying out start-stop control, current magnitude adjustment and output current and voltage signal acquisition on No. 1 to No. 7 constant current power supplies on the trolley; adjusting the gas flow of the 1 to 7# argon and nitrogen mass flow meters; monitoring the pressure of a compressed air system in the container;
the laser is fixed on the trolley and used for monitoring the profile and position change of the steel rail so as to adjust the relative position of the generator and the steel rail through the control of the second PLC control module on the servo motor.
The second PLC control module can control a trolley walking servo motor, and the generator lifting, rotating and stretching servo motor controls.
The third PLC control module can perform start-stop control, current magnitude adjustment and output current and voltage signal acquisition on No. 8 to No. 14 constant current power supplies on the trolley; flow adjustments were made for # 8 to 14 argon and nitrogen mass flowmeters.
The upper computer has a networking function after communicating with the wireless transmission RTU equipment, and can realize the functions of remote uploading and downloading of data transmitted to a remote monitoring center through a network.
The invention has the beneficial effects that:
1. the centralized layout of the laminar plasma generator set, the laminar plasma constant current power supply system, the water path and the gas path and the central control system on the operation trolley reduces the connection quantity of cables, water pipes and gas pipes between the container and the trolley during the operation of the trolley and improves the construction efficiency.
2. The central control system ensures the quality and stability of the surface strengthening treatment of the steel rail by the centralized acquisition and control of various working data such as a laminar plasma generator group, the speed control of a trolley, a cooling system, an air compressor and the like.
3. The central control system scans the position of the steel rail through the laser, automatically adjusts the relative position of the laminar plasma generator and the steel rail, and avoids the failure of surface strengthening treatment of the steel rail caused by the change of the rail gauge on a railway line.
4. The equipment related to the invention can be remotely operated, analyzed and archived after being networked, and can be remotely used for analyzing and eliminating equipment faults.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
Detailed Description
In the following, the technical solutions in the embodiments of the present invention are clearly and completely described, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in figure 1
Example 1
A control system of online steel rail surface strengthening equipment is characterized by comprising: host computer, center control system, constant current power supply, mass flowmeter and laser instrument, center control system includes: the system comprises a first PLC control module, a second PLC control module and a third PLC control module, wherein the upper computer, the central control system, the constant current power supply, the mass flow meter and the laser are connected by signals.
The upper computer communicates with the first PLC control module through a 232 interface, and communicates with the laser, the second PLC control module, the third PLC control module and the wireless transmission RTU device through a bus mode.
The laser is fixed on the trolley and used for monitoring the profile and position change of the steel rail so as to adjust the relative position of the generator and the steel rail through the control of the second PLC control module on the servo motor.
The upper computer has a networking function after communicating with the wireless transmission RTU equipment, and can realize the functions of remote uploading and downloading of data transmitted to a remote monitoring center through a network.
Example 2
A control system of online steel rail surface strengthening equipment is characterized by comprising: host computer, center control system, constant current power supply, mass flowmeter and laser instrument, center control system includes: the system comprises a first PLC control module, a second PLC control module and a third PLC control module, wherein the upper computer, the central control system, the constant current power supply, the mass flow meter and the laser are connected by signals.
The first PLC control module is used for performing start-stop control and flow and temperature signal acquisition on a cooling system in the container; carrying out start-stop control, current magnitude adjustment and output current and voltage signal acquisition on No. 1 to No. 7 constant current power supplies on the trolley; adjusting the gas flow of the 1 to 7# argon and nitrogen mass flow meters; monitoring the pressure of a compressed air system in the container;
the second PLC control module can control a trolley walking servo motor, and the generator lifting, rotating and stretching servo motor controls.
The third PLC control module can perform start-stop control, current magnitude adjustment and output current and voltage signal acquisition on No. 8 to No. 14 constant current power supplies on the trolley; flow adjustments were made for # 8 to 14 argon and nitrogen mass flowmeters.
Example 3
A control system of online steel rail surface strengthening equipment is characterized by comprising: host computer, center control system, constant current power supply, mass flowmeter and laser instrument, center control system includes: the system comprises a first PLC control module, a second PLC control module and a third PLC control module, wherein the upper computer, the central control system, the constant current power supply, the mass flow meter and the laser are connected by signals.
The upper computer communicates with the first PLC control module through a 232 interface, and communicates with the laser, the second PLC control module, the third PLC control module and the wireless transmission RTU device through a bus mode.
The first PLC control module is used for performing start-stop control and flow and temperature signal acquisition on a cooling system in the container; carrying out start-stop control, current magnitude adjustment and output current and voltage signal acquisition on No. 1 to No. 7 constant current power supplies on the trolley; adjusting the gas flow of the 1 to 7# argon and nitrogen mass flow meters; monitoring the pressure of a compressed air system in the container;
the second PLC control module can control a trolley walking servo motor, and the generator lifting, rotating and stretching servo motor controls.
The third PLC control module can perform start-stop control, current magnitude adjustment and output current and voltage signal acquisition on No. 8 to No. 14 constant current power supplies on the trolley; flow adjustments were made for # 8 to 14 argon and nitrogen mass flowmeters.
The upper computer has a networking function after communicating with the wireless transmission RTU equipment, and can realize the functions of remote uploading and downloading of data transmitted to a remote monitoring center through a network.
Example 4
A control system of online steel rail surface strengthening equipment is characterized by comprising: host computer, center control system, constant current power supply, mass flowmeter and laser instrument, center control system includes: the system comprises a first PLC control module, a second PLC control module and a third PLC control module, wherein the upper computer, the central control system, the constant current power supply, the mass flow meter and the laser are connected by signals.
The upper computer communicates with the first PLC control module through a 232 interface, and communicates with the laser, the second PLC control module, the third PLC control module and the wireless transmission RTU device through a bus mode.
The first PLC control module is used for performing start-stop control and flow and temperature signal acquisition on a cooling system in the container; carrying out start-stop control, current magnitude adjustment and output current and voltage signal acquisition on No. 1 to No. 7 constant current power supplies on the trolley; adjusting the gas flow of the 1 to 7# argon and nitrogen mass flow meters; monitoring the pressure of a compressed air system in the container;
the laser is fixed on the trolley and used for monitoring the profile and position change of the steel rail so as to adjust the relative position of the generator and the steel rail through the control of the second PLC control module on the servo motor.
The second PLC control module can control a trolley walking servo motor, and the generator lifting, rotating and stretching servo motor controls.
The third PLC control module can perform start-stop control, current magnitude adjustment and output current and voltage signal acquisition on No. 8 to No. 14 constant current power supplies on the trolley; flow adjustments were made for # 8 to 14 argon and nitrogen mass flowmeters.
Example 5
A control system of online steel rail surface strengthening equipment is characterized by comprising: host computer, center control system, constant current power supply, mass flowmeter and laser instrument, center control system includes: the system comprises a first PLC control module, a second PLC control module and a third PLC control module, wherein the upper computer, the central control system, the constant current power supply, the mass flow meter and the laser are connected by signals.
The upper computer communicates with the first PLC control module through a 232 interface, and communicates with the laser, the second PLC control module, the third PLC control module and the wireless transmission RTU device through a bus mode.
The first PLC control module is used for performing start-stop control and flow and temperature signal acquisition on a cooling system in the container; carrying out start-stop control, current magnitude adjustment and output current and voltage signal acquisition on No. 1 to No. 7 constant current power supplies on the trolley; adjusting the gas flow of the 1 to 7# argon and nitrogen mass flow meters; monitoring the pressure of a compressed air system in the container;
the laser is fixed on the trolley and used for monitoring the profile and position change of the steel rail so as to adjust the relative position of the generator and the steel rail through the control of the second PLC control module on the servo motor.
The second PLC control module can control a trolley walking servo motor, and the generator lifting, rotating and stretching servo motor controls.
The third PLC control module can perform start-stop control, current magnitude adjustment and output current and voltage signal acquisition on No. 8 to No. 14 constant current power supplies on the trolley; flow adjustments were made for # 8 to 14 argon and nitrogen mass flowmeters.
The upper computer has a networking function after communicating with the wireless transmission RTU equipment, and can realize the functions of remote uploading and downloading of data transmitted to a remote monitoring center through a network.
Claims (7)
1. A control system of online steel rail surface strengthening equipment is characterized by comprising: host computer, center control system, constant current power supply, mass flowmeter and laser instrument, center control system includes: the system comprises a first PLC control module, a second PLC control module and a third PLC control module, wherein the upper computer, the central control system, the constant current power supply, the mass flow meter and the laser are connected by signals.
2. The control system of the online steel rail surface strengthening equipment according to claim 1, is characterized in that: the upper computer communicates with the first PLC control module through a 232 interface, and communicates with the laser, the second PLC control module, the third PLC control module and the wireless transmission RTU device through a bus mode.
3. The control system of the online steel rail surface strengthening equipment according to claim 1, is characterized in that: the first PLC control module is used for performing start-stop control and flow and temperature signal acquisition on a cooling system in the container; carrying out start-stop control, current magnitude adjustment and output current and voltage signal acquisition on No. 1 to No. 7 constant current power supplies on the trolley; adjusting the gas flow of the 1 to 7# argon and nitrogen mass flow meters; and monitoring the pressure of a compressed air system in the container.
4. The control system of the online steel rail surface strengthening equipment according to claim 1, is characterized in that: the laser is fixed on the trolley and used for monitoring the profile and position change of the steel rail so as to adjust the relative position of the generator and the steel rail through the control of the second PLC control module on the servo motor.
5. The control system of the online steel rail surface strengthening equipment according to claim 1, is characterized in that: the second PLC control module can control a trolley walking servo motor, and the generator lifting, rotating and stretching servo motor controls.
6. The control system of the online steel rail surface strengthening equipment according to claim 1, is characterized in that: the third PLC control module can perform start-stop control, current magnitude adjustment and output current and voltage signal acquisition on No. 8 to No. 14 constant current power supplies on the trolley; flow adjustments were made for # 8 to 14 argon and nitrogen mass flowmeters.
7. The control system of the online steel rail surface strengthening equipment according to claim 1, is characterized in that: the upper computer has a networking function after communicating with the wireless transmission RTU equipment, and can realize the functions of remote uploading and downloading of data transmitted to a remote monitoring center through a network.
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Application publication date: 20210629 |