CN202861924U - Movable numerical control grinding device for grinding steel rail - Google Patents
Movable numerical control grinding device for grinding steel rail Download PDFInfo
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- CN202861924U CN202861924U CN 201220465439 CN201220465439U CN202861924U CN 202861924 U CN202861924 U CN 202861924U CN 201220465439 CN201220465439 CN 201220465439 CN 201220465439 U CN201220465439 U CN 201220465439U CN 202861924 U CN202861924 U CN 202861924U
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- emery wheel
- rail
- grinding
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Abstract
The utility model relates to a movable numerical control grinding device for grinding a steel rail. A support frame is mounted on a movable basal body; two sets of mutually independent mechanical arms capable of transversely moving are mounted on the support frame; the mechanical arms are controlled by a numerical control system; and grinding devices are mounted on the movable ends of the mechanical arms. Each grinding device comprises a bracket body, a sand wheel self-adaptive feedback device, a positioning boot, a main shaft system and a sand wheel, wherein the main shaft system is mounted below the bracket body; the sand wheel is mounted on the main shaft system; the positioning boot is mounted on the bracket body through a longitudinal servo feeding system and a longitudinal guide rail; the longitudinal servo feeding system is controlled by the numerical control system; the bottom of the positioning boot is in the same horizontal plane with the bottom of the sand wheel in the grinding process; the sand wheel self-adaptive feedback device is connected with the main shaft of the sand wheel; and a variable quantity caused by friction grinding between the sand wheel and the steel rail is fed back to the numerical control system through the sand wheel self-adaptive feedback device. The movable numerical control grinding device for grinding the steel rail has the advantages of complete function, high working efficiency, high grinding efficiency and grinding precision, high degree of automation and the like.
Description
Technical field
The utility model relates to a kind of movable numerically-controlled grinding attachment that is applicable to the rail reconditioning.
Background technology
High-speed railway, subway and inter-city train are at the positive high speed development of China, general speed per hour operates in more than the 250km, the F-Zero of Beijing-Tianjin inter-city train even surpassed 350km, and rail is the main foundation of carrying train, high train running speed like this, the indexs such as the surface roughness of rail and smooth degree have been proposed harsh requirement, but rail is under the high-speed cruising state, wearing and tearing and disease are aggravated easily, this dual problem becomes important content with regard to the damage repair that makes rail, and the rail grinding vehicle mainly contains two kinds of forms in the world at present, and a kind of is that polishing is shaped, form moulding by the bull emery wheel and carry out grinding, this mode can only be carried out reconditioning to damaging less rail, when running into larger damage, lean on the reshaping reparation of manually polishing first, the simultaneously wearing and tearing of bull emery wheel are difficult to unanimously, and grinding accuracy is lower; The second then is the mode that adopts the milling car, adopt first the profile milling cutter wheel to carry out high-speed milling, then adopt wide abrasive wheel forming grinding, eliminate Milling Process error and moulding interface water caltrop, this mode machining accuracy is higher, and the grinding scope is wider, but mill apparatus wherein mainly adopts the mode of simple nc and Artificial Control combination, inefficiency, potential safety hazard is large.
The utility model content
The purpose of this utility model is to overcome the deficiencies in the prior art and a kind of perfect in shape and function, high efficiency, grinding efficiency height and grinding accuracy is high, automaticity the is high movable numerically-controlled grinding attachment that is applicable to the rail reconditioning is provided.
A kind of movable numerically-controlled grinding attachment that is applicable to the rail reconditioning, comprise bracing frame, digital control system and be used for to drive the telecontrol equipment of bracing frame and rail generation relative motion, support frame as described above is provided with emery wheel, drive the axis system of described emery wheel rotation and drive the thrust unit that described axis system moves in the vertical direction, also be provided with the emery wheel self adaptation feedback device that is connected and receives and analyze the torque feedback amount of described emery wheel with described axis system on the support frame as described above, when moving downward, can give by described thrust unit described main shaft system a unified controlled normal pressure, also be provided with down on the described thrust unit and push away device, the described lower bottom that pushes away device is equipped with the location boots, described location boots all were on the rail grinding face in when work and described emery wheel, described emery wheel self adaptation feedback device by described digital control system with described under push away device and be connected, and by the described lower amount of movement that device moves up and down that pushes away of the torque feedback amount control of described emery wheel.
In the utility model, pushing away device under described is the servo longitudinal feeding system, and the tache motorice of described servo longitudinal feeding system is connected with described location boots.
In the utility model, described side direction precision positioning device is installed on the boots of described location, described side direction precision positioning device inside is equipped with and makes described side direction precision positioning device be close to all the time the spring mechanism of the medial surface of rail, described side direction precision positioning device by detecting described side direction precision positioning device relative movement distance grating sensor or eddy current displacement sensor is connected with digital control system and control that horizontal servo feed system inwardly drives described emery wheel or outer mobile by digital control system.
In the utility model, support frame as described above is connected with support body by mechanical arm, described emery wheel, axis system and emery wheel self adaptation feedback device are fixed on the described support body, described mechanical arm comprises cross slide way, cross saddle and the horizontal servo feed system of being controlled by described digital control system, described cross saddle is installed on the bracing frame by horizontal servo feed system, cross slide way, described thrust unit is oil cylinder, and described support body is installed on the described cross saddle by described oil cylinder.
In the utility model, also comprise self-align moving protection cover, described self-align moving protection cover comprises fixed mount and moving protection cover, described fixed mount is installed on the support body, described moving protection cover body is installed on the described fixed mount by the self adaptation mobile device, described moving protection cover body is located on the described emery wheel, and described self adaptation mobile device links by the control of described emery wheel self adaptation feedback device and with the described lower device that pushes away.
In the utility model, the fixed mount of described self-align moving protection cover is equipped with dust exhaust apparatus outward, is provided with gas supplementing opening in the described dust exhaust apparatus.
In the utility model, described emery wheel is provided with the angle that 4 degree～6 are spent with the rail that needs grinding.
In the utility model, it is 20-30m/s that described emery wheel adopts cylindricalo grinding and described wheel face linear velocity.
In the utility model, described emery wheel adopts corundum wheel.
In the utility model, described telecontrol equipment for driving bracing frame and rail generation relative motion is rail engineering automobile, and support frame as described above is installed on the frame panel of rail engineering automobile.
Adopt such scheme, this device has following advantage:
1, this device is directly installed on the motion matrix (the motion matrix here is rail engineering automobile or other at the carrier that rail moves), the campaign-styled grinding method that adopts grinding machine to move, realization is to the accurate grinding of the rectangular parts such as rail, do not need extra manpower and materials with the car grinding, easy to use.
2, application wheel self adaptation feedback device passes through to locate the variation of boots and side direction precision positioning device control emery wheel energy self adaptation rail when climb and fall and turning, thereby emery wheel self adaptation feedback device is controlled the wheel grinding amount by pushing away device down so that locate moving up and down of boots; The side direction precision positioning device is converted to the signal of telecommunication with change in displacement, control by computer program, inwardly or outward moved by horizontal driven by servomotor emery wheel, thereby keep emery wheel all the time over against Rail Surface, thereby realize the grinding and feeding of closed-loop control emery wheel, when abrasion of grinding wheel and grinding allowance were inhomogeneous, the emery wheel automatic entrance-exit was realized permanent worn amount grinding.
3, adopt the full envelope emery wheel of self-align moving protection cover and grinding area, and automatically collect dust by dust exhaust apparatus, realize dustless and safe grinding.
4, emery wheel and need the rail of grinding to be provided with the angles of 4 degree～6 degree, such moving ahead along with rail engineering automobile, grinding rail is surperficial at an angle all the time for emery wheel, can make the convex cross section comprehensive engagement of whole emery wheel cross section and rail, and emery wheel and rail contact-making surface shape are complementary; Can make the Grinding Contact area change of the relative rail of emery wheel, reduce the quantity of material of emery wheel unit interval loss, reduce the local uneven wear of grinding heating and emery wheel.
Description of drawings
Fig. 1 is front view of the present utility model.
Fig. 2 is rearview of the present utility model.
Fig. 3 is left view of the present utility model.
The specific embodiment
Below in conjunction with accompanying drawing, describe a kind of specific embodiment that is applicable to the movable numerically-controlled grinding attachment of rail reconditioning in detail.
Such as Fig. 1,2,3, a kind of movable numerically-controlled grinding attachment that is applicable to the rail reconditioning comprises cross slide way 1, horizontal servo feed system 2, bracing frame 3, servo longitudinal feeding system 4, oil cylinder 5, emery wheel self adaptation feedback device 6, self-align moving protection cover 7, dust exhaust apparatus 8, axis system 9, emery wheel 10, side direction precision positioning device 11, location boots 12, cross saddle 13, longitudinal rail 14, rail 15 parts such as grade, the separate mechanical arm that can laterally move freely of two covers is installed on the support frame as described above, described mechanical arm is controlled by digital control system, on the described mechanical arm grinding attachment is installed, described mechanical arm comprises cross slide way 1, cross saddle 13 and the horizontal servo feed system 2 of being controlled by described digital control system, described cross saddle 13 is installed on the bracing frame 3 by cross slide way 1, the transverse movement of the described cross saddle 13 of described horizontal servo feed system 2 controls, thereby finish emery wheel move left and right function, described support body is installed on the described cross saddle 13 by described longitudinal rail 14, and realize moving up and down of support body by the oil cylinder 5 that is installed in described cross saddle 13 tops, thereby control emery wheel 10 moves up and down, described oil cylinder upwards can bear whole support body from gravity, can give support body a controlled normal pressure downwards, the below of described support body is equipped with axis system 9, on the described axis system 9 emery wheel 10 is installed, described emery wheel 10 is provided with the angle that 4 degree～6 are spent with the rail 15 that needs grinding, be fixed with servo longitudinal feeding system 4 on the described support body, the piston end of described servo longitudinal feeding system 4 is equipped with location boots 12, described location boots 12 are by relative emery wheel 10 position movements of servo longitudinal feeding system 4 controls, boots 12 bottoms, location when grinding and the bottom of described emery wheel 10 be on the same level face, the location boots 12 all the time with rail 15 Surface Contacts, bear the downward normal pressure that is given by servo longitudinal feeding system 4, control emery wheel 10 relative rail 15 surperficial feed and withdrawings by moving up and down of location boots 12, the movement of described location boots 12 is then controlled by emery wheel self adaptation feedback device 6, described emery wheel self adaptation feedback device 6 is connected with the axis system 9 of emery wheel 10, described axis system 9 feeds back to the torque value of the motor of described emery wheel 10 rotations of control in the described axis system 9 in the described emery wheel self adaptation feedback device 6, by with described emery wheel self adaptation feedback device 6 in the torque setting value compare whether draw described emery wheel 10 stock removals normal, again value of feedback is fed back to digital control system, the location boots 12 that digital control system is controlled described servo longitudinal feeding system 4 move up and down apart from controlling the wheel grinding amount, when emery wheel 10 wearing and tearing or rail 15 ascents and descents cause that stock removal changes, described emery wheel self adaptation feedback device 6 will be responded to the variation of grinding moment of torsion, and send corresponding signal and be transferred to digital control system, control servo longitudinal feeding system 4 so that location boots 12 move up and down by digital control system, thereby moving up and down of control emery wheel 10 guarantees the permanent worn amount grinding to rail 15.
Described side direction precision positioning device 11 is installed on the boots 12 of location, spring mechanism is equipped with in inside, make side direction precision positioning device 11 be close to all the time the medial surface of rail 15, when rail 15 enters bend, side direction precision positioning device 11 can produce and relatively move, its displacement is input to digital control system after detecting reading by grating sensor, controls whole location boots 12 and emery wheel 10 parts move to the bend direction by digital control system, thereby guarantees that emery wheel 10 is along with the bend of rail 15 is followed movement automatically.
In whole mobile grinding process; holder segment with described self-align moving protection cover 7 is installed on the support body; moving protection cover body part is installed on the fixed mount by the self adaptation mobile device; the bottom surface of moving protection cover body leans against rail 15 surfaces all the time; rely on deadweight to diminish along with the wearing and tearing of emery wheel 10; the automated movement location; all the time emery wheel 10 is protected in the space of a sealing; the self adaptation mobile device links by described emery wheel self adaptation feedback device 6 controls and with described servo longitudinal feeding system 4; described dust exhaust apparatus 8 is installed on the fixed mount of self-align moving protection cover 7; in real time the grinding dust is taken away; for preventing from forming vacuum, be provided with gas supplementing opening in the dust exhaust apparatus 8.
Above-mentioned cross slide way 1, longitudinal rail 14, laterally each axle of servo feed system 2 and servo longitudinal feed system 4 both move can single shaft control, control simultaneously also can multichannel links, support and adopt the straight line roller guide to support, drive and adopt screw mandrel to drive, cross slide way 1, longitudinal rail 14 have the extreme position location, double position probing and feedback device, mobile security and the grinding location of guaranteeing linear axis.
Above-mentioned oil cylinder upwards can bear whole support body from gravity; can give support body a controlled normal pressure downwards; controlled normal pressure refers to that specifically support body can rely on its deadweight to move downward under the support of oil cylinder; and this moves downward and plays one by oil cylinder and support and buffering; so that support body is at the uniform velocity to fall; like this so that emery wheel 10 can remain on the rail 15 always; when support body goes downwards to the postpone of oil cylinder qualifying bit; can promote by oil cylinder; emery wheel 10 is affixed to raceway surface; feed back in the described emery wheel self adaptation feedback device 6 by the torque value that will control the motor of described emery wheel 10 rotations in the axis system 9; on the one hand; compare with torque setting value in the described emery wheel self adaptation feedback device 6 whether draw described emery wheel 10 stock removals normal; again value of feedback is fed back to digital control system; digital control system is controlled described servo longitudinal feeding system 4 so that location boots 12 move up and down; when the normal grinding of emery wheel; Motor torque is setting value; work as abrasion of grinding wheel; when grinding allowance reduces; between will reducing and set value, Motor torque has a difference; after difference arrives certain limiting value; digital control system will be sent instruction; control servo longitudinal feed system 4 drives location boots 12 and moves up; emery wheel is in the Gravitative Loads lower feeding; when grinding allowance increases; when motor torque values arrives normal range (NR); servo longitudinal feed system 4 feed-disablings; by that analogy; when grinding allowance increases suddenly; motor torque values is elevated to when setting safety value, and system will think that emery wheel 10 produces collision, and control servo longitudinal feed system 4 drives location boots 12 rapidly to lower feeding; lift emery wheel 10, play the safeguard protection effect.
Grinding process is dry abrasive cutting, is provided with abrasive wheel protecting device 6 in the emery wheel outside, and suction port is offered at the rear portion, and grinding and emery wheel dust are absorbed.
Described digital control system adopts Siemens 840 D in NC, 611D drive system and S7PLC to drive control.
Basic functional principle is as follows:
Grinding machine is by the bracing frame 3 whole inverted body bottoms that are installed in train, emery wheel 10 is tilting with rail 15 rectilinear directions angled (4-6 °), be installed on the cross saddle 13, driven emery wheel 10 aligning rail 15 by horizontal servo feed system 2, by oil cylinder 5 with whole axis system 9 downwards near Rail Surfaces, until location boots 12 are pressed on rail 15 surfaces, adopting servo longitudinal feeding system 4 to drive location boots 12 moves up and down, moving up and down of indirectly control emery wheel 10, and the shift action of location boots 12, control by emery wheel self adaptation feedback device 6 again, when abrasion of grinding wheel or rail appearance upward slope, when descending and irregular projection, its actual worn amount can change, the self adaptation feedback device can be by modes such as detection grinding change in torque, automatically the feed that moves up and down the indirectly control emery wheel and the withdrawing of boots 12 located in control, thereby realize that emery wheel does not need to revise, rely on from the accurately location grinding of row that marches forward, whole grinder system is followed train and is travelled forward, two emery wheels are in the forward travel process, adopt " feeding cutter " mode to finish automatic rail reconditioning, when rail enters bend, it is mobile in real time that grinding machine can be controlled horizontal servo feed system by side direction precision positioning device 11, to guarantee that emery wheel 10 covers rail 15 full surfacings all the time.Whole grinding process adopts the dry abrasive cutting mode, and self-align moving protection cover 7 is emery wheel 10 and grinding area full envelope all the time, and automatically collects grinding dust, not only environmental protection but also safety by dust exhaust apparatus 8.
Claims (10)
1. movable numerically-controlled grinding attachment that is applicable to the rail reconditioning, comprise bracing frame, digital control system and be used for to drive the telecontrol equipment of bracing frame and rail generation relative motion, support frame as described above is provided with emery wheel, drive the axis system of described emery wheel rotation and drive the thrust unit that described axis system moves in the vertical direction, it is characterized in that: also be provided with the emery wheel self adaptation feedback device that is connected and receives and analyze the torque feedback amount of described emery wheel with described axis system on the support frame as described above, when moving downward, can give by described thrust unit described main shaft system a unified controlled normal pressure, also be provided with down on the described thrust unit and push away device, the described lower bottom that pushes away device is equipped with the location boots, described location boots all were on the rail grinding face in when work and described emery wheel, described emery wheel self adaptation feedback device by described digital control system with described under push away device and be connected, and by the described lower amount of movement that device moves up and down that pushes away of the torque feedback amount control of described emery wheel.
2. the movable numerically-controlled grinding attachment that is applicable to the rail reconditioning according to claim 1, it is characterized in that: pushing away device under described is the servo longitudinal feeding system, the tache motorice of described servo longitudinal feeding system is connected with described location boots.
3. the movable numerically-controlled grinding attachment that is applicable to the rail reconditioning according to claim 2, it is characterized in that: support frame as described above is connected with support body by mechanical arm, described emery wheel, axis system and emery wheel self adaptation feedback device are fixed on the described support body, described mechanical arm comprises cross slide way, cross saddle and the horizontal servo feed system of being controlled by described digital control system, described cross saddle is by horizontal servo feed system, cross slide way is installed on the bracing frame, described thrust unit is oil cylinder, and described support body is installed on the described cross saddle by described oil cylinder.
4. the movable numerically-controlled grinding attachment that is applicable to the rail reconditioning according to claim 3, it is characterized in that: also comprise the side direction precision positioning device, described side direction precision positioning device is installed on the boots of described location, described side direction precision positioning device inside is equipped with and makes described side direction precision positioning device be close to all the time the spring mechanism of the medial surface of rail, described side direction precision positioning device by detecting described side direction precision positioning device relative movement distance grating sensor or eddy current displacement sensor is connected with digital control system and control that horizontal servo feed system inwardly drives described emery wheel or outer mobile by digital control system.
5. the movable numerically-controlled grinding attachment that is applicable to the rail reconditioning according to claim 4, it is characterized in that: also comprise self-align moving protection cover, described self-align moving protection cover comprises fixed mount and moving protection cover, described fixed mount is installed on the support body, described moving protection cover body is installed on the described fixed mount by the self adaptation mobile device, described moving protection cover body is located on the described emery wheel, and described self adaptation mobile device links by the control of described emery wheel self adaptation feedback device and with the described lower device that pushes away.
6. the movable numerically-controlled grinding attachment that is applicable to the rail reconditioning according to claim 5, it is characterized in that: the fixed mount of described self-align moving protection cover is equipped with dust exhaust apparatus outward, is provided with gas supplementing opening in the described dust exhaust apparatus.
7. it is characterized in that according to claim 2 or the 3 described movable numerically-controlled grinding attachments that are applicable to the rail reconditioning: described emery wheel and the rail that needs grinding are provided with the angles of 4 degree～6 degree.
8. the movable numerically-controlled grinding attachment that is applicable to the rail reconditioning according to claim 7 is characterized in that: it is 20-30m/s that described emery wheel adopts cylindricalo grinding and described wheel face linear velocity.
9. the movable numerically-controlled grinding attachment that is applicable to the rail reconditioning according to claim 8 is characterized in that: described emery wheel employing corundum wheel.
10. the movable numerically-controlled grinding attachment that is applicable to the rail reconditioning according to claim 3, it is characterized in that: described telecontrol equipment for driving bracing frame and rail generation relative motion is rail engineering automobile, and support frame as described above is installed on the frame panel of rail engineering automobile.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220465439 CN202861924U (en) | 2012-09-13 | 2012-09-13 | Movable numerical control grinding device for grinding steel rail |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220465439 CN202861924U (en) | 2012-09-13 | 2012-09-13 | Movable numerical control grinding device for grinding steel rail |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202861924U true CN202861924U (en) | 2013-04-10 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220465439 Expired - Lifetime CN202861924U (en) | 2012-09-13 | 2012-09-13 | Movable numerical control grinding device for grinding steel rail |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202861924U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102837236A (en) * | 2012-09-13 | 2012-12-26 | 湖南海捷精密工业有限公司 | Movable numerical control grinding apparatus for grinding steel rail and control method thereof |
| CN105014539A (en) * | 2015-07-16 | 2015-11-04 | 湖南大学 | Controllable quick back-forth point feeding grinding system based on grinding temperature empirical model and grinding method |
-
2012
- 2012-09-13 CN CN 201220465439 patent/CN202861924U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102837236A (en) * | 2012-09-13 | 2012-12-26 | 湖南海捷精密工业有限公司 | Movable numerical control grinding apparatus for grinding steel rail and control method thereof |
| CN105014539A (en) * | 2015-07-16 | 2015-11-04 | 湖南大学 | Controllable quick back-forth point feeding grinding system based on grinding temperature empirical model and grinding method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Granted publication date: 20130410 Effective date of abandoning: 20150204 |
|
| RGAV | Abandon patent right to avoid regrant |