CN110130165B - Positioning device suitable for steel rail online milling operation - Google Patents
Positioning device suitable for steel rail online milling operation Download PDFInfo
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- CN110130165B CN110130165B CN201810136532.6A CN201810136532A CN110130165B CN 110130165 B CN110130165 B CN 110130165B CN 201810136532 A CN201810136532 A CN 201810136532A CN 110130165 B CN110130165 B CN 110130165B
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- steel rail
- positioning device
- milling
- rail
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- 238000003801 milling Methods 0.000 title claims abstract description 109
- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 84
- 239000010959 steel Substances 0.000 title claims abstract description 84
- 238000001514 detection method Methods 0.000 claims abstract description 56
- 230000007246 mechanism Effects 0.000 claims abstract description 30
- 230000008859 change Effects 0.000 claims abstract description 7
- 230000006698 induction Effects 0.000 claims description 23
- 238000006073 displacement reaction Methods 0.000 claims description 20
- 238000000227 grinding Methods 0.000 claims description 18
- 238000000034 method Methods 0.000 claims description 10
- 238000003825 pressing Methods 0.000 claims description 9
- 239000003337 fertilizer Substances 0.000 claims description 7
- 230000008569 process Effects 0.000 claims description 6
- 208000012659 Joint disease Diseases 0.000 claims description 5
- 230000002159 abnormal effect Effects 0.000 claims description 4
- 230000006835 compression Effects 0.000 claims description 4
- 238000007906 compression Methods 0.000 claims description 4
- 230000001174 ascending effect Effects 0.000 claims description 3
- 230000009471 action Effects 0.000 claims description 2
- 238000005299 abrasion Methods 0.000 abstract description 6
- 230000001939 inductive effect Effects 0.000 abstract description 4
- 238000012423 maintenance Methods 0.000 abstract description 3
- 238000006748 scratching Methods 0.000 abstract description 3
- 230000002393 scratching effect Effects 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 4
- 239000000956 alloy Substances 0.000 description 3
- 229910045601 alloy Inorganic materials 0.000 description 3
- 241001669679 Eleotris Species 0.000 description 1
- 230000005856 abnormality Effects 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 201000010099 disease Diseases 0.000 description 1
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000010977 unit operation Methods 0.000 description 1
Classifications
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B31/00—Working rails, sleepers, baseplates, or the like, in or on the line; Machines, tools, or auxiliary devices specially designed therefor
- E01B31/02—Working rail or other metal track components on the spot
- E01B31/12—Removing metal from rails, rail joints, or baseplates, e.g. for deburring welds, reconditioning worn rails
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B31/00—Working rails, sleepers, baseplates, or the like, in or on the line; Machines, tools, or auxiliary devices specially designed therefor
- E01B31/02—Working rail or other metal track components on the spot
- E01B31/12—Removing metal from rails, rail joints, or baseplates, e.g. for deburring welds, reconditioning worn rails
- E01B31/17—Removing metal from rails, rail joints, or baseplates, e.g. for deburring welds, reconditioning worn rails by grinding
-
- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B2203/00—Devices for working the railway-superstructure
- E01B2203/01—Devices for working the railway-superstructure with track
- E01B2203/012—Devices for working the railway-superstructure with track present, i.e. in its normal position
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B2203/00—Devices for working the railway-superstructure
- E01B2203/14—Way of locomotion or support
- E01B2203/141—Way of locomotion or support on the track to be treated
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Machines For Laying And Maintaining Railways (AREA)
- Automatic Control Of Machine Tools (AREA)
Abstract
The utility model provides a positioner suitable for steel rail on-line milling operation, including lower supporting seat (14), supporting seat (15) are gone up in this lower supporting seat (14) connection, vertical feeding base (5) are installed to this last supporting seat (15), preceding supporting seat (11) and back supporting seat (6) are installed to this vertical feeding base (5), detection pole (2) are still connected to this back supporting seat (6), cylinder (3), length meter (4), spring mechanism (12), signal shaft (13), overrange inductive switch (10) and operation inductive switch (16) have been arranged on preceding supporting seat (11), detection pole (2) are connected with cylinder (3), length meter (4), spring mechanism (12) and signal shaft (13). The positioning device disclosed by the invention adopts the plurality of rollers as the running part of the positioning device on the top surface of the steel rail, so that the milling unit is supported to rapidly slide on the surface of the steel rail, the positioning device is prevented from scratching the surface of the steel rail and generating vibration, the change of the wave crest and the wave trough of the top surface of the steel rail can be effectively monitored, the roller is slow in abrasion, and the maintenance cost of the positioning device can be reduced.
Description
Technical Field
The invention relates to a positioning device suitable for rail online milling operation, and belongs to the technical field of railway mechanical design and manufacture.
Background
The rail milling and grinding vehicle is used for carrying out on-line milling and grinding operation on the rail in the working operation, so that rail diseases such as wave milling, cracking, fat edge and peeling can be eliminated, and the service life of the rail is effectively prolonged. As the core component of the rail milling and grinding vehicle, the milling and grinding unit needs to be accurately positioned on the rail in the operation process and accurately slides along the rail in real time, so that the milling and grinding unit of the rail milling and grinding vehicle needs to be provided with a positioning device.
The existing milling unit is equipped with a positioning device, an abrasion block is adopted as a contact part to press against the top surface of a steel rail to slide, an eddy current sensor is adopted as a transverse displacement measuring sensor, and the tail end of a detection rod is driven by a spring mechanism to be clung to the inner side of the steel rail. In actual operation, as the surface of the steel rail is subjected to wave milling, the milling unit is pressed on the top surface of the steel rail by the positioning device to slide, the abrasion block scratches the surface of the steel rail and causes the milling unit to vibrate so as to reduce servo feeding precision, and the abrasion block is easy to consume and needs to be replaced periodically, so that maintenance cost is increased; meanwhile, the measuring range of the eddy current sensor is small, the measuring precision is low, on one hand, the rail joint and the dislocation of the steel rail can enable the instant moving distance of the detecting rod to exceed the measuring range of the eddy current sensor, so that the milling unit is frequently and emergently lifted, and on the other hand, the transverse profile precision after operation is directly affected because the transverse displacement of the milling unit is related to the measuring value of the eddy current sensor, the error is easily generated when the milling unit transversely follows; furthermore, if the milling and grinding unit is lifted at the position with the fertilizer edge of the steel rail, the detection rod is scratched by the fertilizer edge. The above problems can greatly reduce the reliability and operation accuracy of the milling and grinding unit.
The Chinese patent application with the application number of 201610870842.1 discloses a self-adaptive following device for laterally positioning a steel rail milling device, which comprises a base, a lever positioning device, a lever resetting device, a lever adjusting device and a sensing device; the lever positioning device comprises a lever and a positioning alloy block, the lever resetting device comprises a resetting spring and a resetting top pin, the lever adjusting device comprises a cylinder, and the sensing device comprises a linear displacement sensor and a sensor fixing seat. The self-adaptive following device solves the problem that the traditional lateral positioning device cannot normally position when the steel rail is seriously fattened and collapsed, can adapt to different steel rail specifications and different steel rail connections, and can realize precise lateral positioning of the milling device during milling and grinding operation of the steel rail under the working conditions of serious line of fattened and collapsed steel rail. The device realizes precise positioning and digital feedback of milling and grinding, but the problems that a base of the following device scratches the surface of a steel rail and the like are still not solved, and the following device cannot effectively follow peaks and troughs of the surface of the steel rail.
Therefore, a novel positioning device needs to be designed, on one hand, the positioning device can support the milling unit to rapidly slide on the surface of the steel rail, and secondary damage cannot be caused to the top surface of the steel rail; on the other hand, the positioning device can overcome severe working conditions such as rail joints, staggered teeth, fat edges and the like in the descending, operation following and lifting processes so as to meet the technical requirements of milling and grinding unit operation.
Disclosure of Invention
The invention sets that: the direction perpendicular to the rail extension (i.e. parallel to the sleeper) is transverse, the direction perpendicular to the rail top surface is vertical, and the direction parallel to the rail extension is longitudinal.
The invention aims to solve the technical problem of providing a positioning device suitable for on-line milling and grinding operation of a steel rail, which is used for breaking through the technical problems of inaccurate positioning and abrasion of the surface of the steel rail of the existing milling and grinding device, realizing accurate positioning of a milling and grinding unit of a steel rail milling and grinding vehicle, accurately following the steel rail in real time and improving the operation precision and reliability of the milling and grinding unit.
The invention is realized by the following technical scheme: the utility model provides a positioner suitable for steel rail on-line milling operation, includes the lower supporting seat, and this lower supporting seat connects the supporting seat, and this upper supporting seat installs vertical feeding base, and this vertical feeding base installs preceding supporting seat and back supporting seat, and this back supporting seat still connects the measuring staff, arrange cylinder, length meter, spring mechanism, signal axle, overtravel induction switch and operation induction switch on the preceding supporting seat, the measuring staff with cylinder, length meter, spring mechanism and signal hub connection.
Preferably, the lower support seat comprises a front end inner frame and a rear end inner frame, a seat body between the front end inner frame and the rear end inner frame is parallel to the top surface of the steel rail, and the upper part of the front end inner frame is connected with the upper support seat.
Preferably, the front end inner frame and the rear end inner frame of the lower supporting seat are respectively provided with a group of rollers, the number of each group of rollers is at least one, the center distance between the two groups of rollers is larger than 200mm, so that when the positioning device is pressed on the top surface of the rail with the wave mill, one group of rollers can contact with the wave crest or the wave trough, the middle part of the lower supporting seat is provided with a force sensor for detecting the downward force of the milling unit, and the working surface of the force sensor is contacted with the bottom surface of the upper supporting seat.
Preferably, the front end of the detection rod is connected with the cylinder, the length meter, the spring mechanism and the movable end of the signal shaft, and a contact block is fixed at the tail end of the detection rod.
Preferably, a pressing block is mounted on the inner side below the rear supporting seat, the inside of the pressing block is connected with the detection rod through a pin shaft, so that the detection rod is mounted on the positioning device suitable for the online milling operation of the steel rail, the pin shaft in the pressing block is movably hinged with the detection rod, and the detection rod can rotate around the pin shaft in the pressing block by a small angle.
In any of the above schemes, preferably, the upper supporting seat can rotate around the central circular shaft of the vertical feeding base by a small angle so as to meet the requirement of angle deflection generated by the positioning device suitable for the on-line milling operation of the steel rail in sliding on an ascending slope or a descending slope.
In any of the above schemes, preferably, the air cylinder is connected to a pneumatic electromagnetic valve through an air pipe, and the air cylinder is controlled to act by the pneumatic electromagnetic valve in a power-off mode, so that the detection rod is further driven to move.
In any of the above schemes, preferably, the measuring rod of the length meter makes a transverse linear motion along with the detecting rod, further measures the displacement value of the contact block sliding along with the inner side of the steel rail in real time, and transmits the displacement value to the numerical control system through the data line to instruct the milling unit to make a transverse motion.
In any of the above aspects, it is preferable that the spring mechanism employs a compression spring having a spring force smaller than the cylinder driving force.
In any of the above schemes, preferably, the signal shaft moves transversely along with the detection rod, when the over-travel induction switch detects the signal shaft, the signal shaft indicates abnormal following, the numerical control system indicates the milling unit to lift in an emergency, when the operation induction switch detects the signal shaft, the positioning device suitable for the online milling operation of the steel rail is indicated to be in normal following, and the numerical control system indicates the milling unit to continue normal operation.
The positioning device provided by the invention adopts the following method to realize the functions:
(1) When the milling unit is ready to be positioned, the pneumatic electromagnetic valve is powered off, the cylinder piston rod is retracted and the detection rod is pulled inwards, the spring mechanism is compressed, the contact block is far away from the inner side fertilizer edge of the steel rail, the positioning device is lowered and pressed on the top surface of the steel rail, the pneumatic electromagnetic valve is powered on after the force sensor detects that the pressure value is normal, the cylinder piston rod extends out and pushes the detection rod outwards, the spring mechanism is reset, the contact block is tightly attached to the inner side of the steel rail, the numerical control system collects the measured value of the length meter at the moment and indicates the milling unit to transversely move towards the corresponding direction until the measured value of the length meter is within the set window value, and accurate positioning is completed.
(2) When the milling unit slides rapidly, the contact block clings to the inner side of the steel rail, along with the change of the geometric parameters of the line, the numerical control system acquires the measured value of the length meter in real time, and if the measured value exceeds the relative displacement value, namely the window value, between the contact block calibrated on the standard straight line by the positioning device and the milling unit, the numerical control system instructs the milling unit to move transversely to the corresponding direction until the measured value of the length meter returns to the window value, so that the sliding along the steel rail accurately in real time is realized.
(3) When the milling unit slides rapidly, if the contact block encounters serious rail joint diseases or other anomalies, the over-travel inductive switch detects a signal shaft, the numerical control system considers that an alarm signal is received, the pneumatic electromagnetic valve is powered down, the cylinder piston rod is retracted and the detection rod is pulled inwards, the spring mechanism is compressed, the contact block is far away from the inner side fat edge of the rail, the milling unit is lifted urgently, and the treatment of the abnormal working conditions is completed.
The invention also provides a positioning and risk avoiding method suitable for steel rail on-line milling operation, which comprises the following steps:
a. the milling unit prepares for positioning, at the moment, the control system controls the piston rod of the cylinder to retract and pull the detection rod towards the inner side, the spring mechanism compresses, the contact block is far away from the fat edge on the inner side of the steel rail, the positioning device suitable for the online milling operation of the steel rail descends and presses the top surface of the steel rail, after the force sensor detects that the pressure value is normal, the control system controls the piston rod of the cylinder to extend and push the detection rod outwards, the spring mechanism resets, the contact block is closely attached to the inner side of the steel rail, at the moment, the numerical control system collects the measured value of the length meter, and the numerical control system instructs the milling unit to transversely move towards the corresponding direction until the measured value of the length meter is within a set window value, and accurate positioning is completed;
b. when the milling unit slides rapidly, the contact block clings to the inner side of the steel rail, along with the change of the geometric parameters of the line, the numerical control system acquires the measured value of the length meter in real time, and if the measured value exceeds the relative displacement value, namely the window value, between the contact block calibrated on the standard straight line by the positioning device and the milling unit, the numerical control system instructs the milling unit to move transversely to the corresponding direction until the measured value of the length meter returns to the window value, so that the sliding along the steel rail accurately in real time is realized.
c. When the milling unit slides rapidly, if the contact block encounters serious rail joint diseases or other anomalies, the signal shaft receives displacement signals in the moving process of the contact block driving the detection rod, the over-travel induction switch detects the signal shaft, so that the over-travel induction switch transmits signals to the numerical control system, the numerical control system considers that alarm signals are received, the pneumatic electromagnetic valve is deenergized, the piston rod of the cylinder retracts and pulls the detection rod inwards, the spring mechanism compresses, the contact block is far away from the inner side fertilizer edge of the rail, and the milling unit is lifted in an emergency mode to finish the treatment of the abnormal working conditions.
Compared with the prior art, the invention has the following advantages and effects:
(1) The plurality of rollers are adopted as the running parts of the positioning device on the top surface of the steel rail, so that the milling unit can be supported to rapidly slide on the surface of the steel rail, the positioning device is prevented from scratching the surface of the steel rail and generating vibration, the change of the wave crest and the wave trough of the top surface of the steel rail can be effectively monitored, the abrasion of the rollers is slow, and the maintenance cost of the positioning device can be reduced.
(2) The length meter is adopted as a transverse following displacement measuring sensor, the measuring range of the length meter is large, the measuring precision is high, the responding overtravel alarming distance can reach 25mm, the fault tolerance distance is obviously improved, and meanwhile, the displacement measured value of the length meter is compared with the window value set by the numerical control system, so that the purposes of improving the positioning precision of the milling unit and accurately following the steel rail to slide in real time are achieved.
(3) The cylinder is adopted to drive the contact block to move, so that the transverse moving distance of the contact block is more than 10mm, and the contact block is driven by the cylinder to leave the inner side surface of the steel rail under any condition when the milling unit descends or lifts by program linkage, thereby avoiding scratching the contact block when the steel rail with a fat edge descends or lifts and further damaging the detection rod.
(4) And a hard alloy block with reasonable outline size is adopted as a transverse following contact block, and is clung to the inner side of the steel rail in milling operation, so that the trafficability of a milling unit at the maximum joint and the staggered teeth of the steel rail is improved.
Drawings
FIG. 1 is a schematic diagram of an inside layout of the present invention;
FIG. 2 is a schematic diagram of an external layout of the present invention;
FIG. 3 is a schematic diagram of a partial layout of a lower support and an upper support according to the present invention;
FIG. 4 is a schematic diagram of a partial layout of a test stick according to the present invention;
fig. 5 is a schematic partial layout of a support base according to the present invention.
The meaning of the numerical designations in fig. 1-3 is:
vertical feeding base of 1 steel rail 2 detection rod 3 cylinder 4 length meter 5
6 rear supporting seat 7 roller 8 contact block 9 pressing block 10 over-travel induction switch
11 front supporting seat 12 spring mechanism 13 signal shaft 14 lower supporting seat 15 upper supporting seat
16 operation inductive switch 17 force sensor 18 pin shaft
Detailed Description
Embodiment 1.1A positioning device suitable for rail on-line milling operation, as shown in fig. 1-5, comprises a lower supporting seat 14, wherein the lower supporting seat 14 is connected with one end of an upper supporting seat 15 through a pin shaft, the upper supporting seat 15 is provided with a vertical feeding base 5, the vertical feeding base 5 is provided with a front supporting seat 11 and a rear supporting seat 6, the lower supporting seat 14 comprises a front end inner frame and a rear end inner frame, a seat body between the front end inner frame and the rear end inner frame is parallel to the plane of a rail, a force sensor 17 is further arranged on the seat body of the front end inner frame and the rear end inner frame, the upper part of the front end inner frame is connected with an upper supporting seat 15, the front end inner frame and the rear end inner frame of the lower supporting seat 14 are respectively provided with a group of rollers, the center distance between the two groups of rollers is 300mm, so as to ensure that when the positioning device suitable for rail on-line milling operation presses the top surface of the rail with waves, one group of force sensors can contact peaks or troughs, the force sensors 17 are used for detecting the contact with the working surface of the upper supporting seat 15 of the lower pressure surface of a lower unit.
The rear supporting seat 6 is also connected with a detection rod 2, the detection rod 2 is longitudinally arranged along the front supporting seat 11, the vertical feeding base 5 and the rear supporting seat 6, and the longitudinal length of the detection rod 2 is greater than the sum of the longitudinal lengths of the front supporting seat 11, the vertical feeding base 5 and the rear supporting seat 6; the longitudinal section of the detection rod 2 is an elongated rod comprising four corners and three longitudinal horizontal sections, a vertical section and a vertical inclined section.
As shown in fig. 1-2, the front supporting seat 11 comprises a transverse supporting seat connected with the vertical feeding base 5, and a longitudinal top plate, a longitudinal outer back plate and a longitudinal inner back plate which are integrally formed with the transverse supporting seat, wherein the longitudinal top plate longitudinally extends forwards from the upper surface of the transverse supporting seat, the longitudinal outer back plate and the longitudinal inner back plate are integrally formed with the transverse supporting seat and the longitudinal top plate, the central axis of the longitudinal top plate is perpendicular to the central axis of the transverse supporting seat, and the longitudinal outer back plate and the longitudinal inner back plate are also perpendicular to the central axis of the transverse supporting seat; the longitudinal inner back plate is longer than the longitudinal top plate, and the longitudinal outer back plate is equal to the longitudinal top plate in length.
As shown in fig. 5, an over-travel induction switch 10, a spring mechanism 12 and a signal shaft 13 are sequentially arranged under the longitudinally outer back plate along the direction from the position close to the transverse support to the position far away from the transverse support, the axes of the over-travel induction switch 10 and the signal shaft 13 are in the same horizontal plane, the longitudinally outer back plate under the signal shaft 13 is connected with a working induction switch 16, and the central axes of the signal shaft 13 and the working induction switch 16 are in the same vertical plane; the over travel sensing switch 10 is perpendicular to the central axis of the operation sensing switch 16.
The front end of the detection rod 2 is connected with the movable ends of the air cylinder 3, the length meter 4, the spring mechanism 12 and the signal shaft 13, the air cylinder 3 is at a position far away from the vertical feeding base 5, the length meter 4 is at a position close to the vertical feeding base 5, and the tail end of the detection rod 2 is fixed with a contact block 8.
The inside briquetting 9 of back supporting seat 6 below is installed, and detection pole 2 is connected through the round pin axle in this briquetting 9 to install the detection pole in be applicable to on the positioner of rail on-line milling operation, the round pin axle in briquetting 9 with the cooperation of detection pole is movable hinge, thereby makes detection pole 2 can do the rotation of a small angle around the round pin axle 18 in this briquetting 9.
In this embodiment, the upper support base 15 may rotate around the central circular axis of the vertical feeding base 5 by a small angle, so as to meet the requirement of angle deflection generated in the sliding of the positioning device suitable for the on-line rail milling operation on an ascending slope or a descending slope.
The air cylinder 3 is connected to the pneumatic electromagnetic valve through an air pipe, and the action of the air cylinder is controlled by the power failure of the pneumatic electromagnetic valve, so that the detection rod 2 is further driven to move.
The measuring rod of the length meter 4 moves transversely and linearly along with the detecting rod 2, further measures the displacement value of the contact block 8 sliding along with the inner side of the steel rail in real time, and transmits the displacement value to the numerical control system through a data line to instruct the milling unit to move transversely.
The spring mechanism 12 employs a compression spring having a spring force smaller than the driving force of the cylinder 3.
The signal shaft 13 moves transversely along with the detection rod 2, when the over-travel induction switch 10 detects the signal shaft 13, the following abnormality is indicated, the numerical control system indicates the milling unit to lift in an emergency mode, when the operation induction switch 16 detects the signal shaft 13, the positioning device suitable for the steel rail on-line milling operation is indicated to be in normal following, and the numerical control system indicates the milling unit to continue normal operation.
The contact block 8 is a hard alloy block with arc angles at two ends and a straight line segment in the middle.
Embodiment 1.2 a positioning device suitable for rail on-line milling operation, which is different from embodiment 1.1 in that: the front end inner frame and the rear end inner frame of the lower support seat 14 are respectively provided with a group of rollers, wherein the number of the rollers of one group is one, and the number of the rollers of the other group is two.
Embodiment 1.3 a positioning device suitable for rail on-line milling operation, which is different from embodiment 1.1 in that: the detection rod is driven by a hydraulic oil cylinder.
The working principle of the positioning device suitable for the steel rail on-line milling operation in the embodiment is as follows:
(1) When the milling unit is ready for positioning, the pneumatic electromagnetic valve is powered off, the piston rod of the air cylinder 3 is retracted and the detection rod 2 is pulled towards the inner side, the spring mechanism 12 is compressed, the contact block 8 is far away from the fat edge on the inner side of the steel rail 1, the positioning device suitable for the steel rail on-line milling operation is lowered and pressed on the top surface of the steel rail 1, the force sensor 17 detects that the pressure value is normal, the pneumatic electromagnetic valve is powered on, the piston rod of the air cylinder 3 extends out and pushes the detection rod 2 outwards, the spring mechanism 12 is reset, the contact block 8 is tightly attached to the inner side of the steel rail, the numerical control system acquires the measured value of the length meter 4 at the moment, and the milling unit is indicated to transversely move towards the corresponding direction until the measured value of the length meter 4 is within a set window value, and accurate positioning is completed.
(2) When the milling unit slides rapidly, the contact block 8 clings to the inner side of the steel rail, along with the change of the geometric parameters of the line, the numerical control system acquires the measured value of the length meter 4 in real time, and if the measured value exceeds the relative displacement value, namely the window value, between the contact block 8 calibrated on the standard straight line by the positioning device and the milling unit, the numerical control system instructs the milling unit to move transversely in the corresponding direction until the measured value of the length meter 4 returns to the window value, so that the sliding along the steel rail accurately in real time is realized.
(3) When the milling unit slides rapidly, if the contact block 8 encounters serious rail joint diseases or other anomalies, the signal shaft 13 receives displacement signals in the moving process of the contact block 8 driving the detection rod 2, the over-travel induction switch 10 detects the signal shaft 13, so that the over-travel induction switch 10 transmits signals to the numerical control system, the numerical control system receives anomaly alarms, the pneumatic electromagnetic valve is powered off, the piston rod of the air cylinder 3 retracts and pulls the detection rod 2 inwards, the spring mechanism 12 compresses, the contact block 8 is far away from the inner side fertilizer edge of the rail, and the milling unit is lifted urgently to complete the treatment of the anomaly conditions.
Embodiment 2.1 a positioning method suitable for rail on-line milling operation, comprising the following steps:
a. the milling unit is ready for positioning, at the moment, the pneumatic electromagnetic valve is powered off, the piston rod of the air cylinder 3 is retracted and the detection rod 2 is pulled towards the inner side, the spring mechanism 12 is compressed, the contact block 8 is far away from the fat edge on the inner side of the steel rail 1, the positioning device suitable for the steel rail on-line milling operation is lowered and pressed on the top surface of the steel rail 1, after the pressure value is detected to be normal by the force sensor 17, the pneumatic electromagnetic valve is powered on, the piston rod of the air cylinder 3 extends out and pushes the detection rod 2 outwards, the spring mechanism 12 is reset, the contact block 8 is clung to the inner side of the steel rail, the numerical control system acquires the measured value of the length meter 4 at the moment, and the contact block 8 is indicated to transversely move towards the corresponding direction until the measured value of the length meter 4 is within a set window value, and accurate positioning is completed;
b. when the milling unit slides rapidly, the contact block 8 clings to the inner side of the steel rail, along with the change of the geometric parameters of the line, the numerical control system acquires the measured value of the length meter 4 in real time, and if the measured value exceeds the relative displacement value, namely the window value, between the contact block 8 calibrated on the standard straight line by the positioning device and the milling unit, the numerical control system instructs the milling unit to move transversely in the corresponding direction until the measured value of the length meter 4 returns to the window value, so that the sliding along the steel rail accurately in real time is realized.
c. When the milling unit slides rapidly, if the contact block 8 encounters serious rail joint diseases or other anomalies, the signal shaft 13 receives displacement signals in the moving process of the contact block 8 driving the detection rod 2, the over-travel induction switch 10 detects the signal shaft 13, so that the over-travel induction switch 10 transmits signals to the numerical control system, the numerical control system receives anomaly alarms, the pneumatic electromagnetic valve is powered off, the piston rod of the air cylinder 3 retracts and pulls the detection rod 2 inwards, the spring mechanism 12 compresses, the contact block 8 is far away from the inner side fertilizer edge of the rail, and the milling unit is lifted urgently to complete the treatment of the anomaly conditions.
The steps a and b are sequentially executed or the steps a and c are sequentially executed or the steps a, b and c are sequentially executed according to the condition of the steel rail.
Claims (5)
1. The utility model provides a positioner suitable for rail on-line milling operation which characterized in that: the steel rail on-line milling and grinding device comprises a lower supporting seat (14), wherein the lower supporting seat (14) is connected with an upper supporting seat (15), the upper supporting seat (15) is provided with a vertical feeding base (5), the vertical feeding base (5) is provided with a front supporting seat (11) and a rear supporting seat (6), the rear supporting seat (6) is also connected with a detection rod (2), a pressing block (9) is arranged on the inner side below the rear supporting seat (6), an air cylinder (3), a length meter (4), a spring mechanism (12), a signal shaft (13), an over-travel induction switch (10) and an operation induction switch (16) are arranged on the front supporting seat (11), the detection rod (2) is connected with the air cylinder (3), the length meter (4), the spring mechanism (12) and the signal shaft (13), and the upper supporting seat (15) can rotate around the central circular shaft of the vertical feeding base (5) by a small angle so as to meet the angle deflection requirement of a positioning device suitable for on-line milling and grinding operation in an ascending slope or a descending slope; the front end of the detection rod (2) is connected with the movable ends of the cylinder (3), the length meter (4), the spring mechanism (12) and the signal shaft (13); a contact block (8) is fixed at the tail end of the detection rod (2); the inside of the pressing block (9) is connected with the detection rod (2) through a pin shaft (18) so as to install the detection rod on the positioning device suitable for the steel rail on-line milling operation; the pin shaft (18) in the pressing block (9) is movably connected with the detection rod (2), and the detection rod (2) can rotate around the pin shaft in the pressing block by a small angle; the air cylinder (3) is connected to the pneumatic electromagnetic valve through an air pipe, and the action of the air cylinder is controlled by the power-off of the pneumatic electromagnetic valve, so that the detection rod (2) is further driven to move; the measuring rod of the length meter (4) moves transversely and linearly along with the detecting rod (2), further measures the displacement value of the contact block (8) sliding along with the inner side of the steel rail in real time, and transmits the displacement value to the numerical control system through a data line to instruct the milling unit to move transversely; the spring mechanism adopts a compression spring, and the spring force of the compression spring is smaller than the driving force of the air cylinder; the signal shaft (13) moves transversely along with the detection rod (2), when the overtravel induction switch (10) detects the signal shaft (13), the signal shaft indicates abnormal following, the numerical control system indicates the milling unit to lift in an emergency mode, when the operation induction switch (16) detects the signal shaft (13), the positioning device suitable for steel rail on-line milling operation is indicated to be in normal following, and the numerical control system indicates the milling unit to continue normal operation.
2. A positioning device suitable for rail on-line milling operation as claimed in claim 1, wherein: the lower supporting seat (14) comprises a front end inner frame and a rear end inner frame, a seat body between the front end inner frame and the rear end inner frame is parallel to a steel rail plane, and the upper part of the front end inner frame is connected with the upper supporting seat (15).
3. A positioning device suitable for rail on-line milling operation as claimed in claim 2, wherein: the front end inner frame and the rear end inner frame of the lower supporting seat (14) are respectively provided with a group of rollers, the number of each group of rollers is at least one, and the center distance between the two groups of rollers is more than 200mm so as to ensure that one group of rollers can contact with wave crests or wave troughs when the positioning device is pressed on the top surface of a steel rail with a wave mill.
4. A positioning device suitable for rail on-line milling operations as claimed in any one of claims 1 to 3, wherein: the middle part of the lower supporting seat (14) is provided with a force sensor for detecting the downward pressure of the milling unit, and the working surface of the force sensor is contacted with the bottom surface of the upper supporting seat (15).
5. A positioning and risk avoiding method suitable for rail on-line milling operation, adopting the positioning device of claim 1, characterized in that: comprises the following steps:
a. the milling unit is ready for positioning, at the moment, the control system controls the piston rod of the air cylinder (3) to retract and pull the detection rod (2) towards the inner side, the spring mechanism (12) is compressed, the contact block (8) is far away from the fat edge on the inner side of the steel rail (1), the positioning device suitable for the online milling operation of the steel rail descends and presses the top surface of the steel rail (1), the force sensor (17) detects that the pressure value is normal, the control system controls the piston rod of the air cylinder (3) to extend and push the detection rod (2) outwards, the spring mechanism (12) is reset, the contact block (8) is tightly attached to the inner side of the steel rail, at the moment, the numerical control system collects the measured value of the length meter (4) and indicates the milling unit to transversely move towards the corresponding direction until the measured value of the length meter (4) is within a set window value, and accurate positioning is completed;
b. when the milling unit slides rapidly, the contact block (8) clings to the inner side of the steel rail, along with the change of geometric parameters of a line, the numerical control system acquires the measured value of the length meter (4) in real time, if the measured value exceeds a relative displacement value, namely a window value, between the contact block (8) calibrated on a standard straight line by the positioning device and the milling unit, the numerical control system instructs the milling unit to move transversely in the corresponding direction until the measured value of the length meter (4) returns to the window value, so that the sliding along with the steel rail accurately in real time is realized;
c. when the milling unit is in rapid sliding, if a contact block (8) encounters serious rail joint diseases or other anomalies, a signal shaft (13) receives a displacement signal in the moving process of the contact block (8) driving a detection rod (2), an over-travel induction switch (10) detects the signal shaft (13), so that the over-travel induction switch (10) transmits a signal to a numerical control system, the numerical control system considers that an alarm signal is received, a pneumatic electromagnetic valve is powered off, a piston rod of a cylinder (3) is retracted and pulls the detection rod (2) inwards, a spring mechanism (12) is compressed, the contact block (8) is far away from the inner side fertilizer edge of a rail, and the milling unit is lifted in emergency to finish the treatment of the anomaly conditions;
steps a, b are performed sequentially or steps a, c are performed sequentially or steps a, b, c are performed sequentially.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810136532.6A CN110130165B (en) | 2018-02-09 | 2018-02-09 | Positioning device suitable for steel rail online milling operation |
| PCT/CN2018/084991 WO2019153537A1 (en) | 2018-02-09 | 2018-04-28 | Positioning device applicable to steel rail on-line milling work |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810136532.6A CN110130165B (en) | 2018-02-09 | 2018-02-09 | Positioning device suitable for steel rail online milling operation |
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| Publication Number | Publication Date |
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| CN110130165A CN110130165A (en) | 2019-08-16 |
| CN110130165B true CN110130165B (en) | 2024-03-15 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810136532.6A Active CN110130165B (en) | 2018-02-09 | 2018-02-09 | Positioning device suitable for steel rail online milling operation |
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| Country | Link |
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| CN (1) | CN110130165B (en) |
| WO (1) | WO2019153537A1 (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110756868B (en) * | 2019-11-18 | 2024-09-27 | 中航成飞民用飞机有限责任公司 | Milling system and method |
| CN111501443B (en) * | 2020-03-19 | 2022-01-28 | 湖南大学 | Steel rail grinding device |
| CN111687733B (en) * | 2020-06-12 | 2021-12-28 | 重庆市云阳职业教育中心 | Outdoor cement railing armrest platform maintenance equipment |
| CN113062160B (en) * | 2021-04-20 | 2024-07-16 | 中国铁建高新装备股份有限公司 | Milling and grinding positioning device, steel rail milling and grinding system and milling and grinding turning machine |
| CN117905011B (en) * | 2024-03-19 | 2024-06-14 | 太原轨道交通一号线建设运营有限公司 | Cleaning and maintaining equipment for subway rail transit |
| CN117900998B (en) * | 2024-03-20 | 2024-05-17 | 南通海隆磁业有限公司 | Workpiece positioning base for magnetic steel polishing |
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Also Published As
| Publication number | Publication date |
|---|---|
| CN110130165A (en) | 2019-08-16 |
| WO2019153537A1 (en) | 2019-08-15 |
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