CN111794024A - Ballastless track polishing system and method - Google Patents
Ballastless track polishing system and method Download PDFInfo
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- CN111794024A CN111794024A CN202010645927.6A CN202010645927A CN111794024A CN 111794024 A CN111794024 A CN 111794024A CN 202010645927 A CN202010645927 A CN 202010645927A CN 111794024 A CN111794024 A CN 111794024A
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- 238000005498 polishing Methods 0.000 title claims abstract description 90
- 238000000034 method Methods 0.000 title claims abstract description 39
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 110
- 239000010959 steel Substances 0.000 claims abstract description 110
- 230000007246 mechanism Effects 0.000 claims description 182
- 230000033001 locomotion Effects 0.000 claims description 15
- 238000012360 testing method Methods 0.000 claims description 9
- 230000008569 process Effects 0.000 claims description 7
- 238000005259 measurement Methods 0.000 claims description 2
- 201000010099 disease Diseases 0.000 abstract description 7
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 abstract description 7
- 238000005516 engineering process Methods 0.000 abstract description 5
- 238000009434 installation Methods 0.000 description 10
- 230000008901 benefit Effects 0.000 description 6
- 230000005540 biological transmission Effects 0.000 description 6
- 230000001105 regulatory effect Effects 0.000 description 6
- 238000012986 modification Methods 0.000 description 5
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- 230000009286 beneficial effect Effects 0.000 description 4
- 244000309464 bull Species 0.000 description 3
- 230000001276 controlling effect Effects 0.000 description 3
- 239000000523 sample Substances 0.000 description 3
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- 230000008859 change Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 229910001651 emery Inorganic materials 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 230000009471 action Effects 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 239000010426 asphalt Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000000945 filler Substances 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 238000007517 polishing process Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000009662 stress testing Methods 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B31/00—Working rails, sleepers, baseplates, or the like, in or on the line; Machines, tools, or auxiliary devices specially designed therefor
- E01B31/02—Working rail or other metal track components on the spot
- E01B31/12—Removing metal from rails, rail joints, or baseplates, e.g. for deburring welds, reconditioning worn rails
- E01B31/17—Removing metal from rails, rail joints, or baseplates, e.g. for deburring welds, reconditioning worn rails by grinding
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- E—FIXED CONSTRUCTIONS
- E01—CONSTRUCTION OF ROADS, RAILWAYS, OR BRIDGES
- E01B—PERMANENT WAY; PERMANENT-WAY TOOLS; MACHINES FOR MAKING RAILWAYS OF ALL KINDS
- E01B1/00—Ballastway; Other means for supporting the sleepers or the track; Drainage of the ballastway
- E01B1/002—Ballastless track, e.g. concrete slab trackway, or with asphalt layers
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- Engineering & Computer Science (AREA)
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- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
Abstract
The embodiment of the application provides a polishing system and method for a ballastless track bearing platform, relates to a ballastless track polishing technology, and is used for solving the problem of high treatment cost caused by the fact that a track fastener adjusting method is adopted to treat an arch-up disease of a ballastless track in the related technology. The system of polishing of ballastless track support rail platform includes: the temperature measuring device is used for measuring the actual rail temperature of the target steel rail and the locking temperature of the steel rail; the pushing device is used for vertically pushing and transversely pushing the target steel rail; and the grinding device is used for grinding the rail bearing platform to be ground after the target steel rail is pushed.
Description
Technical Field
The application relates to a ballastless track grinding technology, in particular to a grinding system and method for a ballastless track bearing platform.
Background
The ballastless track is a track structure which adopts integral foundations such as concrete and asphalt mixture to replace a loose gravel track bed, and has the advantages of preventing ballast from splashing, being good in smoothness, good in stability, long in service life, less in maintenance work and the like.
Ballastless tracks must be constructed on a solid and stable foundation, and if the foundation deforms, the geometrical state of the track changes, so that the speed of a train is limited, and even the operation is interrupted. One of the 'upwarp' diseases of geometric change is particularly prominent, and becomes a great problem in operating high-speed railway lines on all roads. In the related art, the rail fastener adjusting method is usually adopted to treat the arch-up diseases, the method can affect the train operation efficiency, a lot of economic resources are consumed, and the treatment cost is very high.
Disclosure of Invention
The embodiment of the application provides a system and a method for polishing a ballastless track bearing platform, which are used for solving the problem of high treatment cost caused by the fact that a track fastener adjusting method is adopted to treat an arch-up disease of a ballastless track in the related art.
The embodiment of the first aspect of this application provides a system of polishing of ballastless track support rail platform, includes:
the temperature measuring device is used for measuring the actual rail temperature of the target steel rail and the locking temperature of the steel rail;
the pushing device is used for vertically pushing and transversely pushing the target steel rail;
and the grinding device is used for grinding the rail bearing platform to be ground after the target steel rail is pushed.
In one possible implementation manner, the pushing device includes: the vertical pushing piece and the transverse pushing piece are respectively used for vertically pushing and transversely pushing the target steel rail.
In one possible implementation manner, the vertical pushing member includes: the steel rail clamping head is arranged at the output end of the vertical driving part;
the lateral pushing member includes: the transverse driving part and a steel rail chuck arranged at the output end of the transverse driving part;
wherein the output end of the vertical driving part is perpendicular to the output end of the transverse driving part.
In one possible implementation manner, the vertical pushing pieces and the transverse pushing pieces are distributed at intervals along the length direction of the target steel rail, and the distance between the adjacent vertical pushing pieces and the adjacent transverse pushing pieces is less than or equal to 8 meters.
In one possible implementation manner, the pushing device includes: the vertical driving part, the transverse driving part and the steel rail chuck;
the vertical driving part and the transverse driving part are respectively arranged on two sides of the target steel rail and are oppositely arranged;
the vertical driving part and the transverse driving part can be connected with the steel rail chuck.
In one possible implementation manner, the vertical driving part and the transverse driving part can be detachably connected with the rail clamping head.
In one possible implementation manner, the grinding system of the ballastless track supporting platform further includes: and the stress-strain testing device is used for measuring the stress of the target steel rail in the process of pushing the target steel rail.
In one possible implementation, the polishing device includes: the device comprises a bearing mechanism, a moving mechanism, a rotating mechanism and a polishing mechanism; the bearing mechanism is provided with a walking system for driving the polishing device to move along the ballastless track; the moving mechanism and the rotating mechanism are used for driving the polishing mechanism to move relative to the rail bearing platform to be polished; the grinding mechanism is used for grinding the rail bearing platform to be ground.
In one possible implementation, the moving mechanism is mounted to the carrying mechanism, the rotating mechanism is mounted to the moving mechanism, and the grinding mechanism is mounted to the rotating mechanism.
In one possible implementation manner, the polishing device further comprises a control unit and a measuring unit; the control unit is electrically connected with the measuring unit; the measuring unit is used for collecting image information of a rail bearing platform to be polished; the control unit is used for controlling the movement of the moving mechanism or the rotating mechanism according to the image information collected by the measuring unit, or judging whether the polishing result is qualified according to the image information collected by the measuring unit.
In one possible implementation, the moving mechanism includes: the transverse moving mechanism is used for driving the polishing mechanism to transversely move along the ballastless track; the vertical moving mechanism is used for driving the polishing mechanism to move along the height direction of the ballastless track; and the longitudinal moving mechanism is used for driving the grinding mechanism to move transversely along the ballastless track.
In one possible implementation manner, the longitudinal moving mechanism is mounted on the bearing mechanism;
the bearing mechanism is provided with a longitudinal guide rail extending along the longitudinal direction;
the longitudinal movement mechanism includes: the longitudinal driving piece is used for driving the longitudinal sliding piece to slide along the longitudinal guide rail.
In one possible implementation, the longitudinal drive comprises: the device comprises a longitudinal driving motor, a longitudinal driving gear and a rack, wherein the longitudinal driving gear is arranged at the output end of the longitudinal driving motor, the longitudinal driving gear is meshed with the rack, and the rack is arranged on the bearing mechanism and extends along the longitudinal direction; the longitudinal driving motor is arranged on the longitudinal sliding piece.
In one possible implementation, the longitudinal slide comprises: the device comprises a longitudinal sliding plate box and a main cross beam, wherein the two ends of the main cross beam are respectively connected with the longitudinal sliding plate box, and the longitudinal sliding plate box is matched with a longitudinal guide rail; the longitudinal slide box is provided with the longitudinal driving piece.
In one of the possible implementations, the longitudinal slide is provided with at least one transverse rail extending in a transverse direction;
the lateral movement mechanism includes: a transverse driving member and a transverse sliding member; the transverse sliding piece is connected with the transverse guide rail in a sliding manner; the transverse driving piece is used for driving the transverse sliding piece to move along the transverse guide rail.
In one possible implementation manner, the two lateral moving mechanisms are respectively located at two ends of the lateral sliding piece;
the transverse drive member comprises: a transverse drive motor having a lead screw; the transverse drive motor is mounted to the longitudinal slide;
the transverse sliding part comprises a transverse sliding plate box, and the transverse sliding plate box is provided with a transverse matching nut matched with a lead screw of a transverse driving motor.
In one possible implementation, the transverse sliding member is provided with a vertical guide rail extending in a vertical direction;
the vertical moving mechanism includes: a vertical driving member and a vertical sliding member; the vertical sliding piece is connected with the vertical guide rail in a sliding manner; the vertical driving piece is used for driving the vertical sliding piece to move along the vertical guide rail.
In one possible implementation, the vertical drive includes: a vertical drive motor having a lead screw; the vertical drive motor is mounted to the lateral slide;
the vertical sliding part comprises a vertical sliding plate box, and the vertical sliding plate box is provided with a vertical matching nut matched with a lead screw of a vertical driving motor.
In one possible implementation manner, the rotating mechanism comprises a first rotating mechanism and a second rotating mechanism; the first rotating mechanism is used for driving the polishing mechanism to rotate around a vertical axis; the second rotating mechanism is used for driving the grinding mechanism to rotate around the longitudinal axis.
In one possible implementation manner, the first rotating mechanism and the second rotating mechanism are mounted on the vertical moving mechanism; the first rotating mechanism is used for driving the polishing mechanism to rotate around a vertical axis; the second rotating mechanism is used for driving the grinding mechanism to rotate around the longitudinal axis.
In one possible implementation manner, the first rotating mechanism is arranged on the vertical moving mechanism;
the first rotating mechanism includes: a first servo motor, a pinion and a bull gear; the small gear is arranged at the output end of the first servo motor and meshed with the large gear; the first servo motor drives the pinion to rotate, the pinion drives the large gear meshed with the pinion to rotate, and the large gear drives the polishing mechanism to rotate.
In one possible implementation, the first servo motor is mounted to the vertical slide box; the large gear is supported on the vertical sliding plate box; a main shaft box is arranged at the lower part of a vertical sliding plate box of the vertical moving mechanism, and the large gear is used for driving the main shaft box to rotate; and an electric spindle of the grinding mechanism is arranged in the spindle box.
In one possible implementation manner, the second rotating mechanism is arranged on the spindle box;
the second rotating mechanism includes: the worm is arranged at the output end of the second servo motor; the worm is matched with the worm wheel; one end of the mounting shaft of the turbine is connected with the electric spindle; the axial direction of the mounting shaft of the turbine is perpendicular to the axial direction of the electric spindle;
the second servo motor drives the worm wheel to rotate through the worm, and the worm wheel drives the electric spindle to rotate.
In one possible implementation manner, the grinding mechanism comprises an electric spindle and a grinding wheel, and the electric spindle is used for driving the grinding wheel to rotate; the grinding wheel is detachably connected with the electric spindle.
In one possible implementation manner, the polishing device further includes a bearing mechanism including a traveling system, and the traveling system is configured to drive the polishing device to travel along the rail.
The embodiment of the second aspect of the application provides a method for polishing a ballastless track bearing platform, which comprises the following steps:
determining the temperature difference between the actual rail temperature of the target steel rail and the locking temperature of the steel rail according to the actual rail temperature of the target steel rail and the locking temperature of the steel rail measured by the temperature measuring device;
determining a vertical pushing distance and a transverse pushing distance of a target steel rail;
determining the fastener dismounting length according to the temperature difference and the transverse pushing distance, and dismounting the corresponding fastener;
pushing the target steel rail through a pushing device arranged on the side of the steel rail according to the determined vertical pushing distance, so that the lower surface of the target steel rail is higher than the upper surface of the rail bearing platform shoulder;
pushing the target steel rail by a pushing device arranged on the lateral side of the steel rail according to the determined transverse pushing distance;
polishing the rail bearing table to be polished by a polishing device;
and after the rail bearing platform is polished, the target steel rail is reversed and reset, and the removed fastener is fastened.
In one possible implementation manner, when the corresponding fastener is removed, the fasteners on the front side and the rear side are removed by taking the transverse center line of the rail bearing platform to be polished as the center according to half of the removal length of the fastener.
In one possible implementation manner, during the pushing process of the target steel rail, the stress of the target steel rail is monitored through a stress-strain testing device.
The embodiment of the application provides a system and a method for polishing a ballastless track bearing platform, which can realize online polishing of the ballastless track bearing platform, are beneficial to reducing adverse effects on train operation and are beneficial to reducing treatment cost. In addition, in this embodiment, the grinding device among the system of polishing can realize along the motion of a plurality of directions to do benefit to the position of the emery wheel among the adjustment grinding device and come the not arch diseases of co-altitude of adaptation, for through the fastener adjustment, the volume of polishing scope of this embodiment is bigger, and the adaptability is stronger.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this application, illustrate embodiment(s) of the application and together with the description serve to explain the application and not to limit the application. In the drawings:
fig. 1 is a schematic structural view of a pushing device and a target steel rail provided in an embodiment of the present application;
fig. 2 is a schematic structural view of a grinding device and a target rail according to an embodiment of the present disclosure;
fig. 3 is a schematic flow chart of a polishing method according to an embodiment of the present disclosure.
Description of reference numerals:
11-steel rail; 12-a rail bearing table; 121-shoulder;
2-a pushing device; 21-a vertical drive section; 22-a transverse drive; 23-rail clip; a 24-T shaped stop;
3-grinding device; 31-a carrying mechanism; 32-a lateral movement mechanism; 33-a vertical moving mechanism; 34-a longitudinal movement mechanism; 35-a grinding mechanism; 36-a first rotation mechanism; 37-a second rotation mechanism.
Detailed Description
In order to make the technical solutions and advantages of the embodiments of the present application more apparent, the following further detailed description of the exemplary embodiments of the present application with reference to the accompanying drawings makes it clear that the described embodiments are only a part of the embodiments of the present application, and are not exhaustive of all embodiments. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.
The ballastless track structure is arched mainly because roadbed fillers or foundation soil have certain expansibility and expand and deform after the water-containing state of the roadbed and the foundation changes, so that the track structure is arched; or caused by geological disasters and the like. Once the upwarp deformation occurs, the speed limit operation of the line is usually required, even the operation is interrupted, and the influence on the normal operation order is large.
In the related art, a method for treating an arch-up defect of a ballastless track usually adopts a track fastener adjusting method to treat the arch-up defect, and even needs to dismantle a more original track structure of a fastener and then fill up a roadbed again, so that the method can reduce the running speed of a train, consumes a lot of economic resources, and has high treatment cost. In addition, the method for treating the arch-up diseases by adopting the rail fastener adjusting method has limited adjusting height.
In order to solve the problems of long time consumption and high cost when the ballastless track is renovated, the embodiment provides a polishing system and a polishing method for a ballastless track bearing platform, which can realize online polishing of the ballastless track bearing platform, are beneficial to reducing the influence on train operation and are beneficial to reducing the treatment cost. In addition, in this embodiment, the grinding device among the system of polishing can realize along the motion of a plurality of directions to do benefit to the position of the emery wheel among the adjustment grinding device and come the not arch diseases of co-altitude of adaptation, for through the fastener adjustment, the volume of polishing scope of this embodiment is bigger, and the adaptability is stronger.
The structure and implementation process of the polishing system provided by the present embodiment are illustrated in the following with reference to the accompanying drawings.
As shown in fig. 1 and 2, the X-axis in fig. 1 and 2 is the longitudinal direction; the Y axis is horizontal and the Z axis is vertical. The grinding system that this embodiment provided includes:
a temperature measuring device for measuring an actual rail temperature of the target rail 11 and a rail locking temperature;
the pushing device 2 is used for vertically pushing and transversely pushing the target steel rail 11;
and the grinding device 3 is used for grinding the rail bearing platform 12 to be ground after the target steel rail 11 is pushed.
Wherein, the target steel rail 11 corresponds to the rail bearing platform 12 to be polished. Before the rail bearing platform 12 to be polished is polished, the target rail 11 on the rail bearing platform needs to be moved away, so that the rail bearing platform 12 to be polished can be exposed. The rail locking temperature is a temperature at which the stress of the rail is 0. The temperature measuring device may be of conventional construction in the art, with an accuracy of 0-2 ℃.
The pushing device 2 is used for pushing the target steel rail 11 to move the target steel rail 11 away from the rail bearing platform 12, so that the rail bearing platform 12 to be polished can be exposed. The pushing device 2 can firstly vertically push the target steel rail 11 and then transversely push the target steel rail.
In one possible implementation, the thruster 2 comprises: the device comprises a vertical pushing piece and a transverse pushing piece, wherein the vertical pushing piece and the transverse pushing piece are respectively used for vertically pushing and transversely pushing the target steel rail 11. Wherein the vertical pushing of the target rail 11 causes the lower surface of the target rail 11 to be higher than the upper surface of the rail bearing platform shoulder 121.
Optionally, the vertical pusher comprises: a vertical driving part 21 and a steel rail chuck 23 arranged at the output end of the vertical driving part 21; the lateral pushing member includes: a transverse driving part 22 and a steel rail clamping head 23 arranged at the output end of the transverse driving part 22; wherein the output end of the vertical driving part 21 is perpendicular to the output end of the horizontal driving part 22. The rail clip 23 is used to clip the target rail 11. The specific structure of the rail clip 23 may be conventional in the art, and the embodiment is not limited thereto.
In some examples, the vertical drive section 21 may include a jack and ball adjustment valve. The spherical regulating valve is used for regulating the jack to drive the target steel rail 11 to move vertically; the ball-shaped regulating valve can be a manually operated valve or an electric control valve. The jack may be secured adjacent the target rail 11 by a reaction stop or reaction device. During concrete implementation, the jack pushed vertically can be vertically arranged, and the top end of the jack is connected with a transverse connecting piece to be connected with the steel rail clamping head 23 through the connecting piece, so that the steel rail clamping head 23 can clamp the top end of the target steel rail 11, and the target steel rail 11 can be lifted.
In other examples, the vertical driving part 21 may include a driving motor, an output end of which is provided with a lead screw nut mechanism connected to a rail clamp 23 capable of clamping the target rail 11 through a connector.
In some examples, the lateral drive 22 may include a jack and ball regulator valve. The spherical regulating valve is used for regulating the jack to drive the target steel rail 11 to move along the transverse direction; the ball-shaped regulating valve can be a manually operated valve or an electric control valve. The jack may be secured adjacent the target rail 11, for example to a track plate adjacent the target rail 11, by a reaction stop or reaction device. During specific implementation, the jack for transversely pushing can be transversely arranged, the output end of the jack is connected with a steel rail connecting clamp 23, and the steel rail connecting clamp 23 can clamp the top end of the target steel rail 11, so that the target steel rail 11 is transversely pushed.
In other examples, the transverse driving part 22 may include a driving motor, an output end of which is provided with a lead screw nut mechanism connected to a rail clamp 23 capable of clamping the target rail 11 through an intermediate member.
In this example, the vertical pushing members and the transverse pushing members are spaced apart from each other along the length direction of the target steel rail 11, and the distance between adjacent vertical pushing members and transverse pushing members may be less than or equal to 8 m. The distance between adjacent vertical pushing members can be in the range of 5-10 m, for example, the distance between adjacent vertical pushing members can be 7 m. The distance between adjacent lateral pushing members may be in the range of 5 to 10 meters, for example, the distance between adjacent lateral pushing members may be 7 meters. Therefore, the reliable and stable pushing of the target steel rail 11 is facilitated, and the phenomenon of stress concentration inside the steel rail can be improved.
In this example, the vertical drive portion 21 and the lateral drive portion 22 may be fixed around the target rail 11, and may be implemented by a T-shaped stopper 24 or other reaction force device.
In other possible implementations, the thruster 2 comprises: a vertical driving part 21, a horizontal driving part 22 and a rail clamp 23; the vertical driving part 21 and the horizontal driving part 22 are respectively arranged on two sides of the target steel rail 11 and are oppositely arranged; the vertical driving part 21 and the horizontal driving part 22 can be connected to the rail clip 23. That is, the vertical driving portion 21 and the horizontal driving portion 22 can share the rail clip 23, which is advantageous for cost saving.
In specific implementation, the vertical driving part 21 and the horizontal driving part 22 can be detachably connected with the rail clamp 23 respectively; alternatively, the vertical driving portion 21 and the horizontal driving portion 22 are slidably connected, for example, the horizontal driving portion 22 can move vertically during vertical pushing, and the vertical driving portion 21 can move horizontally during horizontal pushing. The specific implementation of the vertical driving portion 21 and the horizontal driving portion 22 can be similar to that described above, and will not be described herein again.
In one possible implementation, the polishing system further includes: and the stress-strain testing device is used for measuring the stress of the target steel rail 11 in the process of pushing the target steel rail 11. The stress-strain testing device can be adhered to the jacking point of the target steel rail 11. The specific structure of the stress-strain testing device may adopt the conventional arrangement in the art, and the embodiment is not limited in detail here.
In one possible implementation, the grinding device 3 comprises: the bearing mechanism 31, the moving mechanism, the rotating mechanism and the polishing mechanism 35. The grinding mechanism 35 is used for grinding the rail bearing table 12 to be ground. The carriage mechanism 31 is provided with a traveling system. The walking system is used for driving the polishing device 3 to move along the ballastless track.
The carrying mechanism 31 may include a frame and a running gear. The moving mechanism, the rotating mechanism, the polishing mechanism 35 and the like are mounted on the frame. The walking system is arranged on the frame and used for driving the frame to walk along the track. In this way, the grinding device 3 can be brought by means of the running gear to the rail bearing table 12 to be ground.
The moving mechanism and the rotating mechanism are used for driving the grinding mechanism 35 to move relative to the rail bearing table 12 to be ground so as to adjust the position of a grinding wheel in the grinding mechanism 35, and the grinding wheel can be aligned to the rail bearing table 12 to be ground. In a specific implementation, the moving mechanism is mounted to the traveling mechanism, the rotating mechanism is mounted to the moving mechanism, and the grinding mechanism 35 is mounted to the rotating mechanism; thereby, the structural compactness of the grinding device 3 is facilitated.
Optionally, the polishing device 3 further comprises a control unit and a measurement unit; the control unit is electrically connected with the measuring unit; the measuring unit is used for collecting the image information of the rail bearing table 12 to be polished; the control unit is used for controlling the movement of the moving mechanism or the rotating mechanism according to the image information collected by the measuring unit, or judging whether the polishing result is qualified according to the image information collected by the measuring unit, so that the automation degree of the polishing device 3 is improved, and the automatic polishing is favorably realized.
The following will exemplify the structure and implementation of the moving mechanism and the rotating mechanism of the polishing apparatus 3. It can be understood that: the structure and implementation of the moving mechanism and the rotating mechanism are not limited thereto, and the embodiment is only an example.
Specifically, the moving mechanism includes: the transverse moving mechanism 32 is used for driving the polishing mechanism 35 to move transversely along the ballastless track; the vertical moving mechanism 33 is used for driving the polishing mechanism 35 to move along the height direction of the ballastless track; and the longitudinal moving mechanism 34 is used for driving the grinding mechanism 35 to move longitudinally along the ballastless track by the longitudinal moving mechanism 34. The rotation mechanisms include a first rotation mechanism 36 and a second rotation mechanism 37. The first rotating mechanism 36 is used for driving the grinding mechanism 35 to rotate around a vertical axis; the second rotating mechanism 37 is used for driving the grinding mechanism 35 to rotate around the longitudinal axis.
In some examples, the carrier mechanism 31 is provided with longitudinal rails extending in the longitudinal direction; wherein, the longitudinal guide rail can be one or more. The longitudinal movement mechanism 34 includes: a longitudinal driving member and a longitudinal sliding member. The longitudinal sliding piece is connected with the longitudinal guide rail in a sliding manner; the longitudinal sliding piece is provided with sliding grooves matched with the longitudinal guide rails, and the number of the sliding grooves is matched with that of the longitudinal guide rails. The longitudinal driving piece is used for driving the longitudinal sliding piece to slide along the longitudinal guide rail.
Optionally, the longitudinal drive comprises: the longitudinal driving gear is arranged at the output end of the longitudinal driving motor and meshed with the rack, and the rack is arranged on the bearing mechanism 31 and extends longitudinally; the longitudinal driving motor is arranged on the longitudinal sliding piece.
The longitudinal sliding member includes: the longitudinal sliding plate box is provided with a longitudinal driving piece, two ends of the main cross beam are respectively connected with the longitudinal sliding plate box, and the longitudinal sliding plate box is matched with the longitudinal guide rail.
In the present example, the number of the longitudinal driving motors can be adapted to the number of the longitudinal sliding plate boxes; when the number of the longitudinal sliding plate boxes is two, the number of the longitudinal driving motors is also two, so that the longitudinal sliding plate boxes at the two ends can respectively and independently move. Wherein, the left and right ends of the bearing mechanism 31 are also respectively provided with a longitudinal guide rail.
When the vertical sliding plate box works, the control unit can work through the vertical driving motor, the vertical driving motor drives the vertical driving gear to rotate, and under the meshing action of the vertical driving gear and the rack, the vertical driving gear moves along the extending direction of the rack, so that the vertical sliding plate box and the main beam are driven to move longitudinally along the extending direction of the rack. Thus, the longitudinal moving mechanism 34 moves the other moving mechanisms together with the grinding mechanism 35 in the longitudinal direction.
The longitudinal guide rail is arranged, so that the longitudinal moving mechanism 34 and the bearing mechanism 31 can be mounted, and the longitudinal moving mechanism 34 can be ensured to move along the longitudinal direction.
In other examples, the rack and pinion drive may be replaced by other drives, such as a belt drive, a chain drive, a lead screw nut drive, and the like.
The longitudinal slide is provided with at least one transverse rail extending in the transverse direction. For example, the main transverse beam in the longitudinal slide is provided with two parallel transverse rails. The transverse guide rails can be arranged along the transverse extension of the main cross beam and extend to the left end and the right end of the main cross beam; or the transverse guide rails can extend from the left end and the right end of the main cross beam to the middle part, and the specific extension length can be set according to actual needs. Correspondingly, the end of the main beam is provided with a limiting structure such as a limiting block, so as to prevent the transverse moving mechanism 32 from sliding off the main beam.
The lateral movement mechanism 32 includes: a transverse driving member and a transverse sliding member; the transverse sliding piece is connected with the transverse guide rail in a sliding manner; the transverse driving piece is used for driving the transverse sliding piece to move along the transverse guide rail. The lateral moving mechanism 32 includes two, and the two lateral moving mechanisms 32 are respectively located at both ends of the lateral sliding member.
In some examples, the transverse drive comprises: a transverse drive motor having a lead screw; a transverse drive motor is mounted to the longitudinal slide. The transverse sliding part comprises a transverse sliding plate box, and the transverse sliding plate box is provided with a transverse matching nut matched with a lead screw of a transverse driving motor.
When the automatic sliding plate box works, the control unit controls the transverse driving motor to work, the transverse driving motor drives the screw rod to rotate together, and the nut matched with the screw rod drives the transverse sliding plate box to move left and right along the transverse direction. In this way, the lateral moving mechanism 32 moves the vertical moving mechanism 33 and the polishing mechanism 35 together in the lateral direction.
In other examples, the lead screw nut transmission mechanism may be replaced by other mechanisms such as a rack and pinion transmission mechanism. When the gear-rack transmission mechanism is adopted, the rack can extend along the transverse direction, the rack can be arranged on the transverse sliding plate box, and the gear can be arranged at the output end of the transverse driving motor.
The transverse sliding part is provided with a vertical guide rail extending along the vertical direction. For example, the transverse slide box of the transverse slide extends a certain length in the vertical direction, the main beam is arranged at the upper end of the transverse slide box, and the longitudinal slide box is arranged at the upper end of the main beam, so that the structural compactness of the polishing device 3 is facilitated; the transverse slide boxes are provided with vertical guide rails extending in the vertical direction, and each transverse slide box can be provided with one or more vertical guide rails.
The vertical moving mechanism 33 includes: a vertical driving member and a vertical sliding member; the vertical sliding part is connected with the vertical guide rail in a sliding way; the vertical driving piece is used for driving the vertical sliding piece to move along the vertical guide rail. The number of the vertical moving mechanisms 33 may be two, and the two vertical moving mechanisms 33 are respectively disposed corresponding to the two lateral moving mechanisms 32.
In some examples, the vertical drive comprises: a vertical drive motor having a lead screw; the vertical driving motor is mounted to the transverse sliding member; the vertical sliding part comprises a vertical sliding plate box, and the vertical sliding plate box is provided with a vertical matching nut matched with a lead screw of a vertical driving motor.
When the vertical sliding plate box works, the control unit controls the vertical driving motor to work, the vertical driving motor drives the screw rod to rotate together, and the nut matched with the screw rod drives the vertical sliding plate box to move left and right along the transverse direction. Thus, the vertical moving mechanism 33 moves the belt polishing mechanism 35 in the vertical direction together.
In other examples, the lead screw nut transmission mechanism may be replaced by other mechanisms such as a rack and pinion transmission mechanism. When the gear rack transmission mechanism is adopted, the rack can extend vertically, the rack can be arranged on the vertical sliding plate box, and the gear can be arranged at the output end of the vertical driving motor.
In the above embodiment, the longitudinal moving mechanism 34 may be disposed at the upper portion as much as possible to reduce the occupied space at the lower portion, so that the grinding device 3 is more compact in the lateral direction to meet the requirement of the on-line vehicle clearance.
In one possible implementation manner, the first rotating mechanism 36 and the second rotating mechanism 37 are mounted on the vertical moving mechanism 33; the first rotating mechanism 36 is used for driving the polishing mechanism 35 to rotate around a vertical axis; the second rotating mechanism 37 is used to rotate the grinding mechanism 35 about the longitudinal axis.
In some examples, the first rotation mechanism 36 is provided to the vertical movement mechanism 33. The first rotation mechanism 36 includes: a first servo motor, a pinion and a bull gear; the small gear is arranged at the output end of the first servo motor and meshed with the large gear; wherein, the first servo motor drives the pinion to rotate, the pinion drives the gearwheel engaged with the pinion to rotate, and the gearwheel drives the grinding mechanism 35 to rotate.
The first servo motor is mounted to the vertical sliding plate box; the large gear is supported on the vertical sliding plate box; a main shaft box is arranged at the lower part of the vertical sliding plate box of the vertical moving mechanism 33 and is used for installing an electric main shaft of the polishing mechanism 35; the bull gear is used for driving the headstock to rotate.
The vertical sliding plate box is provided with an installation shaft, the axial direction of the installation shaft extends along the vertical direction, and the large gear is installed on the installation shaft; the installation axle accessible bearing supports in vertical slide case, and the gear wheel will drive its installation axle and rotate together, and the electricity main shaft can set up the lower extreme at the installation axle. Or, the installation axle is fixed in vertical slide box, and the gear wheel rotationally sets up in the installation axle, and the gear wheel can be connected with the headstock.
When the grinding machine works specifically, the control unit controls the first servo motor to work, the first servo motor drives the small gear to rotate, the large gear rotates along with the small gear based on the meshing effect of the small gear and the large gear, and the large gear drives the second rotating mechanism 37 and the grinding mechanism 35 to rotate.
In other examples, the gear train consisting of the gearwheel and the pinion may be replaced by a belt gear, a chain drive, etc.
The second rotating mechanism 37 is provided in the spindle head. In some examples, the second rotation mechanism 37 includes: the output end of the second servo motor is provided with a worm; the worm is matched with the worm wheel; one end of the mounting shaft of the turbine is connected with the electric spindle; the axial direction of the installation shaft of the turbine is perpendicular to the axial direction of the electric spindle. Wherein, the installation axle accessible bearing support of turbine sets up in the headstock.
When the electric spindle works specifically, the control unit controls the second servo motor to work, the second servo motor drives the worm wheel to rotate through the worm, and the worm wheel drives the electric spindle to rotate.
In other examples, the gear train consisting of the gearwheel and the pinion may be replaced by a belt gear, a chain drive, etc.
In the above example, the control unit of the polishing device 3 is electrically connected to the polishing mechanism 35, the lateral moving mechanism 32, the vertical moving mechanism 33, the longitudinal moving mechanism 34, the first rotating mechanism 36 and the second rotating mechanism 37, respectively, and the control unit is configured to control the movement of each of the above mechanisms to implement automatic tool setting.
In a specific implementation, the control unit can control the movement of each mechanism according to a control command input by an operator.
In some examples, the polishing apparatus 3 further comprises a measuring unit electrically connected to the control unit; the measuring unit is used for scanning the outline information of the rail bearing platform 12 to be polished, namely acquiring the image information of the rail bearing platform 12 to be polished; the control unit is used for determining the polishing amount according to the image information acquired by the measuring unit, determining the motion amount of each mechanism according to the polishing amount, and controlling the corresponding mechanisms to move so as to realize automatic polishing.
In addition, the control unit can also judge whether the polishing result is qualified according to the image information collected by the measuring unit; if the grinding speed is qualified, finishing grinding, and enabling the grinding device 3 to move to the next rail bearing table 12 to be ground; and if the grinding quantity is not qualified, re-determining the grinding quantity and grinding.
The measuring unit includes the laser scanner probe, and the laser scanner probe is installed in the downside of the electricity main shaft of grinding machanism 35 to ensure that the laser scanner probe is parallel with the bottom surface of the support rail platform 12 of treating to polish, do benefit to the accuracy nature of ensureing to control, do benefit to the accuracy nature of the result of polishing.
The embodiment also provides a method for polishing the ballastless track bearing platform, which is based on the polishing system; for parts of the present embodiment that are not described, reference may be made to the description of the foregoing embodiments.
As shown in fig. 3, the method may include:
s1, determining the temperature difference between the actual rail temperature of the target steel rail and the locking temperature of the steel rail;
s2, determining the vertical pushing distance and the transverse pushing distance of the target steel rail;
s3, determining the fastener dismounting length according to the temperature difference and the transverse pushing distance, and dismounting the corresponding fastener;
s4, pushing the target steel rail through a pushing device arranged on the lateral side of the steel rail according to the determined vertical pushing distance, so that the lower surface of the target steel rail is higher than the upper surface of the shoulder of the rail bearing platform;
s5, pushing the target steel rail through a pushing device arranged on the lateral side of the steel rail according to the determined transverse pushing distance;
s6, polishing the rail bearing table to be polished by the polishing device;
and S7, after the rail bearing table is polished, the target steel rail is pulled back to reset, and a fastener is fastened.
The method of this embodiment can be implemented based on the aforementioned polishing system.
In step S1, the actual rail temperature and the rail locking temperature of the target rail may be measured by a temperature measuring device, and the temperature difference between the actual rail temperature and the rail locking temperature of the target rail is determined according to the measured rail temperature and rail locking temperature.
In step S2, the vertical pushing distance and the lateral pushing distance of the target rail need to be determined according to the specific situation of the rail bearing platform to be polished. After the target steel rail is pushed, at least the rail bearing platform to be polished can be completely exposed.
In step S3, a fastener removal length is determined according to the temperature difference and the lateral pushing distance. The fastener removal length may be determined in accordance with conventional determination methods in the art, such as by pre-obtained functional relationships or empirically. When the fastener is disassembled, the central line of the rail bearing platform to be polished is used as the center, and the front and the rear of the rail bearing platform are respectively disassembled by half of the disassembling length of the fastener.
Before steps S4 and S5, a reaction force stopper or a reaction force device is mounted in advance; the reaction force block and the reaction force device can be constructed by the conventional arrangement in the field. Then, installing a pushing device; the pushing device can comprise a vertical pushing piece and a transverse pushing piece, and the vertical pushing piece and the transverse pushing piece are respectively installed on the corresponding counter-force stop blocks or the counter-force devices. In specific implementation, a reaction force stop block or a reaction force device can be installed firstly; then installing a steel rail chuck of the pushing device; then a jack as a pushing driving part is arranged between the reaction block and the steel rail chuck.
In steps S4 and S5, the vertical and horizontal thrusting distances of the thrusting device are adjusted by the corresponding adjusting valves, respectively. And in the pushing process, the stress of the target steel rail is monitored by a stress-strain testing device. The stress-strain testing device can be provided with a display module or a prompt module, and the display module is used for displaying the measured stress value; the prompting module is used for sending out a sound prompt or a visual prompt when the measured stress value reaches a threshold value.
In step S6, the rail bearing table to be polished can be automatically polished by the polishing device, so that the polishing efficiency is improved, and the cost is reduced. The automatic polishing process of the polishing device can be the same as the foregoing examples, and will not be described herein.
In step S7, after the rail bearing platform is polished, the pushing device is released, the target rail is pulled back and restored, and the removed fastener is fastened.
For example, T-shaped reaction stoppers (hereinafter referred to as T-shaped stoppers) are fixed on the track plates on both sides of the rail bearing platform to be polished by means of bar planting. Look over track board reinforcing bar arrangement drawing before the bar planting, damage reinforcing bar when avoiding the bar planting. The T-shaped stop block is formed by welding a steel plate with the bottom surface of 30cm in length and 30cm in width and a steel plate with the length of 30cm and the height of 15cm, and the thickness of the steel plate is 1 cm.
And measuring the actual rail temperature and the locking temperature of the steel rail, and determining the temperature difference between the actual rail temperature and the locking temperature of the steel rail.
Determining the vertical pushing distance to be 175mm and the transverse pushing distance to be 850 mm.
According to the temperature difference and the transverse pushing distance, the length of the fastener needing to be disassembled is calculated to be 50 m. The length of each detachable fastener is 25m in front and at the back by taking the central line of the rail bearing platform to be polished as a symmetry axis.
And steel rail pushing devices are arranged on the side surfaces of the left and right steel rails corresponding to the fixed T-shaped check blocks.
And sticking a stress testing device at the pushing point on the side surface of the steel rail.
And vertically and transversely pushing the steel rail. And monitoring the change condition of the internal stress of the steel rail in the pushing process. Pushing 175mm vertically to obtain the maximum stress of 94MPa of the steel rail; and transversely pushing for 850mm to obtain the maximum stress of 120MPa of the steel rail.
The grinding device moves back and forth through an X axis, a Y axis and a Z axis, and the swing of a C axis and an A axis adjusts the position of the grinding wheel to complete automatic tool setting; after the tool setting is completed, the measuring unit scans the profile of the rail bearing table, after the scanning is completed, data are transmitted back to the control unit, the control unit determines the grinding amount, and the grinding wheel driven by the electric spindle performs grinding work. After polishing, the measuring unit measures the polished rail bearing platform again, detects whether the polishing result is qualified or not, and the polishing unit is unqualified and polishes again until the polishing result is qualified. And if the product is qualified, polishing is finished.
After polishing, the vertical and horizontal jacks are loosened, the steel rail is pulled back and reset, and the fastener is fastened.
By adopting the polishing method of the embodiment, the polishing efficiency is more than or equal to 15 m/h, and the polishing can be completed within one skylight time in one 'arching' interval, so that the efficiency is greatly improved compared with 1 m/h in the method for adjusting the fastener in the related technology.
By adopting the polishing method of the embodiment, the cost is the running cost of the polishing device and the pushing device, mainly the labor cost of fuel oil and an operator, and compared with the maintenance cost of 25000 yuan/meter of a fastener adjusting method adopted in the related technology, the cost is greatly reduced.
By adopting the polishing method of the embodiment, the polishing device can automatically complete the polishing task, and compared with the existing full-manual adjustment, the labor intensity is reduced.
By adopting the polishing method of the embodiment, the polishing amount ranges from 0mm to 50mm, and compared with the adjustment height of less than 5mm by adopting a fastener adjustment method in the related art, the range is enlarged, and the adaptability is stronger.
In the description of the present application, it is to be understood that the terms "central," "longitudinal," "lateral," "vertical," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in the orientation or positional relationship indicated in the drawings for convenience in describing the present application and for simplicity in description, and are not intended to indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and are not to be considered limiting of the present application.
In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.
In this application, unless expressly stated or limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly and can include, for example, fixed connections, removable connections, or integral parts; can be mechanically connected, electrically connected or can communicate with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art as appropriate.
While the preferred embodiments of the present application have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all alterations and modifications as fall within the scope of the application.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present application without departing from the spirit and scope of the application. Thus, if such modifications and variations of the present application fall within the scope of the claims of the present application and their equivalents, the present application is intended to include such modifications and variations as well.
Claims (13)
1. The utility model provides a system of polishing of ballastless track support rail platform which characterized in that includes:
the temperature measuring device is used for measuring the actual rail temperature of the target steel rail and the locking temperature of the steel rail;
the pushing device is used for vertically pushing and transversely pushing the target steel rail;
and the grinding device is used for grinding the rail bearing platform to be ground after the target steel rail is pushed.
2. The system of claim 1, wherein the thrustor comprises: the vertical pushing piece and the transverse pushing piece are respectively used for vertically pushing and transversely pushing the target steel rail.
3. The grinding system of the ballastless track support platform of claim 2,
the vertical pushing piece comprises: the steel rail clamping head is arranged at the output end of the vertical driving part;
the lateral pushing member includes: the transverse driving part and a steel rail chuck arranged at the output end of the transverse driving part;
wherein the output end of the vertical driving part is perpendicular to the output end of the transverse driving part.
4. The system of claim 2, wherein the vertical pushing members and the transverse pushing members are spaced apart from each other along the length direction of the target rail, and the distance between adjacent vertical pushing members and transverse pushing members is less than or equal to 8 m.
5. The system of claim 1, wherein the thrustor comprises: the vertical driving part, the transverse driving part and the steel rail chuck;
the vertical driving part and the transverse driving part are respectively arranged on two sides of the target steel rail and are oppositely arranged;
the vertical driving part and the transverse driving part can be connected with the steel rail chuck.
6. The system of claim 5, wherein the vertical drive portion and the lateral drive portion are detachably connected to the rail clamp.
7. The system of grinding a ballastless track support platform of any one of claims 1-6, further comprising: and the stress-strain testing device is used for measuring the stress of the target steel rail in the process of pushing the target steel rail.
8. The system of grinding of a ballastless track support platform of any one of claims 1-6, wherein the grinding device comprises: the device comprises a bearing mechanism, a moving mechanism, a rotating mechanism and a polishing mechanism; the bearing mechanism is provided with a walking system for driving the polishing device to move along the ballastless track; the moving mechanism and the rotating mechanism are used for driving the polishing mechanism to move relative to the rail bearing platform to be polished; the grinding mechanism is used for grinding the rail bearing platform to be ground.
9. The system of claim 8, wherein the moving mechanism is mounted to the carriage mechanism, the rotating mechanism is mounted to the moving mechanism, and the grinding mechanism is mounted to the rotating mechanism.
10. The system of claim 9, wherein the polishing device further comprises a control unit and a measurement unit; the control unit is electrically connected with the measuring unit; the measuring unit is used for collecting image information of a rail bearing platform to be polished; the control unit is used for controlling the movement of the moving mechanism or the rotating mechanism according to the image information collected by the measuring unit, or judging whether the polishing result is qualified according to the image information collected by the measuring unit.
11. A sanding method based on the sanding system of any one of the preceding claims, comprising:
determining the temperature difference between the actual rail temperature of the target steel rail and the locking temperature of the steel rail according to the actual rail temperature of the target steel rail and the locking temperature of the steel rail measured by the temperature measuring device;
determining a vertical pushing distance and a transverse pushing distance of a target steel rail;
determining the fastener dismounting length according to the temperature difference and the transverse pushing distance, and dismounting the corresponding fastener;
pushing the target steel rail through a pushing device arranged on the lateral side of the steel rail according to the determined vertical pushing distance, so that the lower surface of the target steel rail is higher than the upper surface of the rail bearing platform shoulder;
pushing the target steel rail by a pushing device arranged on the lateral side of the steel rail according to the determined transverse pushing distance;
polishing the rail bearing table to be polished by a polishing device;
and after the rail bearing platform is polished, the target steel rail is reversed and reset, and the removed fastener is fastened.
12. The method for grinding the ballastless track supporting platform of claim 11, wherein when the corresponding fastener is removed, the fasteners on the front and rear sides are removed according to a half of the member removal length with the transverse center line of the supporting platform to be ground as a center.
13. The method for grinding the ballastless track supporting platform of claim 11, wherein during the pushing of the target steel rail, the stress of the target steel rail is monitored by a stress-strain testing device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010645927.6A CN111794024A (en) | 2020-07-07 | 2020-07-07 | Ballastless track polishing system and method |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010645927.6A CN111794024A (en) | 2020-07-07 | 2020-07-07 | Ballastless track polishing system and method |
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| CN111794024A true CN111794024A (en) | 2020-10-20 |
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| CN202010645927.6A Pending CN111794024A (en) | 2020-07-07 | 2020-07-07 | Ballastless track polishing system and method |
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| CN106988169A (en) * | 2017-05-16 | 2017-07-28 | 中国铁道科学研究院铁道建筑研究所 | A kind of transverse direction pulls out the system and method that track plates replacing is carried out after rail |
| CN108411719A (en) * | 2018-03-28 | 2018-08-17 | 钱幼华 | A kind of gear-driving rail traffic rail grinding machine for grinding rails |
| CN212452133U (en) * | 2020-07-07 | 2021-02-02 | 中国铁建高新装备股份有限公司 | Grinding system for ballastless track |
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| EP0624689A2 (en) * | 1993-05-14 | 1994-11-17 | Elektro-Thermit GmbH | Railgrinding machine |
| CN2858733Y (en) * | 2006-01-23 | 2007-01-17 | 中铁八局集团有限公司 | Small straddle truck for removing and installing rail |
| CN101628390A (en) * | 2009-08-11 | 2010-01-20 | 四川省宜宾普什集团有限公司 | Track slab grinder |
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