CN111235982A - Rail dolly of polishing - Google Patents
Rail dolly of polishing Download PDFInfo
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- CN111235982A CN111235982A CN202010067159.0A CN202010067159A CN111235982A CN 111235982 A CN111235982 A CN 111235982A CN 202010067159 A CN202010067159 A CN 202010067159A CN 111235982 A CN111235982 A CN 111235982A
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- 238000005498 polishing Methods 0.000 title claims abstract description 118
- 239000000428 dust Substances 0.000 claims abstract description 36
- 229910000831 Steel Inorganic materials 0.000 claims description 46
- 239000010959 steel Substances 0.000 claims description 46
- 230000007246 mechanism Effects 0.000 claims description 45
- 230000009471 action Effects 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 15
- 230000002265 prevention Effects 0.000 abstract description 4
- 238000001514 detection method Methods 0.000 description 34
- 238000013461 design Methods 0.000 description 7
- 238000007789 sealing Methods 0.000 description 7
- 238000009434 installation Methods 0.000 description 6
- 238000012423 maintenance Methods 0.000 description 6
- 101000606504 Drosophila melanogaster Tyrosine-protein kinase-like otk Proteins 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 5
- 238000007689 inspection Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 239000004744 fabric Substances 0.000 description 3
- 238000005453 pelletization Methods 0.000 description 3
- 230000002159 abnormal effect Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 238000003912 environmental pollution Methods 0.000 description 2
- 238000004880 explosion Methods 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 206010010904 Convulsion Diseases 0.000 description 1
- 241000270295 Serpentes Species 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000036461 convulsion Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 229910001651 emery Inorganic materials 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000003137 locomotive effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000002184 metal Substances 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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- Machines For Laying And Maintaining Railways (AREA)
Abstract
The invention discloses a rail grinding trolley, which comprises: two grinding trolleys are hinged and connected. The dolly of polishing includes: frame, unit of polishing, walking leading wheel, dust collecting channel and fire prevention dust keeper. The grinding unit is arranged in the frame, the walking guide wheels are arranged at the lower part of the frame, and the dust collecting channel is arranged at the upper part of the frame. The fireproof and dustproof device is coated outside the frame except the bottom, and a semi-closed structure of the polishing trolley is formed through the fireproof and dustproof device and the dust collection channel. The rail grinding trolley also comprises an elastic traction rod and a rigid traction rod, wherein one grinding trolley is connected with the trolley body through the elastic traction rod, and the other grinding trolley is connected with the trolley body through the rigid traction rod. The rail grinding trolley can solve the technical problems of limited application occasions, poor running stability and poor grinding quality and effect of the conventional rail grinding trolley.
Description
Technical Field
The invention relates to the technical field of rail engineering machinery, in particular to a steel rail polishing trolley applied to railway engineering maintenance.
Background
The rail grinding wagon is a rail engineering vehicle mainly applied to rail main line grinding, and has a special turnout grinding wagon for turnout operation and a single grinding wagon which can carry out main line grinding and turnout grinding. However, the existing rail grinding wagon generally has a plurality of technical problems of low working efficiency, potential safety hazards, heavy environmental pollution, poor dust collecting effect, deviation of working drop points and the like, so that the overall grinding working performance is not ideal. At present, the steel rail grinding wagon widely used in China mainly comprises the following types:
1) PGM-48 type sander. The grinding wagon is formed by connecting three sections of vehicles, and two independent grinding trolleys are arranged under each section of vehicle. Every dolly of polishing has four units of polishing, and two polishing motors have been arranged to every unit, and each unit independently deflects when polishing. The polishing trolley is provided with the fireproof plates and the fireproof curtains all around, and is in a semi-closed form, the whole sealing performance is poor, the dust collecting effect is not good, and the polishing trolley cannot be used for polishing turnouts. Meanwhile, the guide wheels of the polishing trolley of the PGM-48 steel rail polishing vehicle adopt a locomotive standard wheel pair, a pair of wheels are connected by the same axle, the trolley is easy to snake during operation, and the abrasion of the wheel rim is serious. And the wheel set occupies large space, has large self mass and is inconvenient to disassemble, assemble and maintain. In addition, every dolly of polishing all independently hangs, need occupy more space, and two polishing motors are with unit same angle control, and the angle combination of polishing is limited, and the deflection angle of polishing is less relatively and can not carry out the switch and polish.
2) LRG type sanding vehicle. The grinding wagon is formed by connecting two same vehicles, and a grinding trolley is arranged below each vehicle. Each polishing trolley is provided with eight polishing motors capable of independently deflecting, and each motor can independently move transversely, lift and deflect. Four motors on one side are installed on one rectangular frame, and the single side can be lifted integrally. The fireproof plates and the fireproof curtains are arranged around the polishing trolley, so that the sealing performance is better, and the dust collecting effect is better. Although the LRG type steel rail grinding wagon is flexible to control, the structure is complex due to more internal motion, the requirements on design, processing, assembly and debugging are high, and the cost is high. The upper end of the polishing trolley is sealed by a hanging fireproof curtain, so that the sealing performance is poor, and the dust collecting effect is influenced. Meanwhile, the polishing trolley is respectively arranged below the two sections of polishing trolleys, so that the polishing trolleys are not beneficial to inspection and maintenance, and the control of the operation falling point is difficult to realize.
3) Model RR16MS-1 turnout grinding wagon. The grinding wagon is formed by connecting two identical wagon sections, and a grinding trolley is arranged below each wagon section. Every dolly of polishing has four units of polishing, and two polishing motors have been arranged to every unit, and each unit independently deflects during polishing, and its operating efficiency is on the low side. The grinding trolley of the RR16MS-1 turnout grinding wagon adopts a guide wheel with an independent wheel pair structure mode, but the structure is more complex, the installation requirement is high, the maintenance is inconvenient, and the cost is higher. The two trolleys are respectively suspended, so that the occupied space is large, and the two grinding motors deflect at the same angle, so that the grinding angle combination is limited. The polishing trolley is connected with the polishing trolley through a rigid traction rod, so that the operation stability is poor, and potential safety hazards exist in the operation safety.
4) RGH-20C type subway grinding wagon. The grinding wagon is formed by connecting two same vehicles, and a grinding trolley is arranged below each vehicle. Each polishing trolley has ten polishing heads, which are driven by hydraulic motors. A grinding trolley of an RGH-20C subway grinding wagon belongs to a two-axle wagon, and is difficult to pass through a small radius curve, and the grinding unit is hung on the outer side and is difficult to transversely arrange. Meanwhile, the vehicle type operation is driven by hydraulic pressure, the oil leakage phenomenon of pipe explosion exists in the use of the hydraulic polishing head, serious safety accidents caused by oil leakage of the pipe explosion easily occur, great potential safety hazards exist, and oil stains cause serious environmental pollution and are gradually crowded by the market.
5) Other types of rail grinding cars. At present, the scheme that elastic traction rods are adopted at two ends of a polishing trolley is applied. The elastic traction rod is realized in two ways, one is realized through a metal spring fitting, and the other is realized through a rubber fitting. The mode of the pure elastic traction rod can not accurately position due to the relative position of the pure elastic traction rod and a grinding vehicle in the grinding operation process, and the movement of the trolley is seriously influenced by external force, so that the operation speed of the grinding trolley is in an unstable state, and the quality and the effect of the grinding operation are greatly influenced.
Disclosure of Invention
In view of the above, the invention aims to provide a rail grinding trolley to solve the technical problems of limited application occasions, poor operation stability and poor grinding quality and effect of the conventional subway rail grinding trolley.
In order to achieve the purpose, the invention particularly provides a technical implementation scheme of a steel rail grinding trolley, and the steel rail grinding trolley is hung on the lower part of a trolley body of a subway steel rail grinding trolley through a lifting mechanism and comprises two grinding trolleys which are hinged and connected. The dolly of polishing includes: frame, unit of polishing, walking leading wheel, dust collecting channel and fire prevention dust keeper. The grinding unit is arranged in the frame, the walking guide wheels are arranged on the lower portion of the frame, and the dust collecting channel is arranged on the upper portion of the frame. The fireproof and dustproof device is coated outside the frame except the bottom, and a semi-closed structure of the polishing trolley is formed by the fireproof and dustproof device and the dust collecting channel. The steel rail grinding trolley further comprises an elastic traction rod and a rigid traction rod, one grinding trolley is connected with the trolley body through the elastic traction rod, the other grinding trolley is connected with the trolley body through the rigid traction rod, and the steel rail grinding trolley is pulled through the elastic traction rod and the rigid traction rod.
Further, the rail grinding carriage comprises a first grinding carriage and a second grinding carriage. And the lower part of one side of the frame of the first grinding trolley along the longitudinal direction is provided with a pair of walking guide wheels. And the lower parts of the two sides of the frame of the second grinding trolley along the longitudinal direction are respectively provided with a pair of walking guide wheels.
Furthermore, the four lifting mechanisms are arranged on two longitudinal sides of the frame in pairs and connected between the lower part of the vehicle body and the frame, and the lifting mechanisms are simultaneously positioned on two transverse sides of the frame.
Furthermore, a derailing protection frame is arranged on the lower portion of the inner side of the guide wheel installation frame of the frame.
Furthermore, through low constant speed control of the subway steel rail grinding wagon, a grinding wheel of the grinding unit forms a certain angle with the steel rail, and grinding of the steel rail is formed under the action of pressure and traction force perpendicular to the surface of the steel rail. The rail grinding trolley further comprises a deflection mechanism and a pressing mechanism, wherein the deflection mechanism is arranged inside the grinding framework of the frame, and deflection force control of the grinding unit is realized through hydraulic control. The pushing mechanism is arranged in the polishing framework and is used for controlling the pushing force and the lifting force of the polishing unit through hydraulic control.
Furthermore, the polishing unit further comprises a polishing motor, a guide pillar upper connecting seat, a guide sleeve, a guide pillar and a polishing unit frame. One end of the deflection mechanism is connected with the polishing framework, and the other end of the deflection mechanism is connected to the polishing unit frame. The polishing unit frame is hinged with the polishing framework through a deflection pin shaft. Connecting seat sets up in the upper portion of grinding motor on the guide pillar, and grinding motor's bistrique passes the unit frame of polishing, and two piece at least guide pillars are connected on the guide pillar between connecting seat and the unit frame of polishing. The guide sleeve is fixed on the outer surface of the polishing motor and sleeved on the guide pillar. One end of the pressing mechanism is connected with the guide pillar upper connecting seat or the polishing unit frame, and the other end of the pressing mechanism is connected to the polishing motor.
Further, the rail grinding trolley adopts a 4-grinding head, an 8-grinding head, a 10-grinding head or a 12-grinding head grinding unit.
Furthermore, the polishing unit further comprises a common polishing unit and a special polishing unit, wherein the common polishing unit and the special polishing unit are symmetrically arranged on two sides of the polishing framework in pairs along the running direction of the subway steel rail polishing vehicle. The distance between the special polishing units symmetrically arranged pairwise is larger than the distance between the common polishing units symmetrically arranged pairwise.
Further, the deflection angle of the common grinding unit ranges from 35 degrees towards the outer side of the rail to 30 degrees towards the inner side of the rail.
Further, the deflection angle of the special grinding unit ranges from 0 degrees towards the inner side of the steel rail to 70 degrees towards the inner side of the steel rail.
Through the implementation of the technical scheme of the steel rail grinding trolley provided by the invention, the steel rail grinding trolley has the following beneficial effects:
(1) the rail grinding trolley disclosed by the invention can meet the grinding requirement of the subway main line, can conditionally grind the turnout, greatly expands the application occasions, and has good operation stability and better grinding quality and effect;
(2) according to the rail grinding trolley, the rigid traction rod and the elastic traction rod are adopted to together guide the grinding trolley to run, so that the occupied space of two sections of trolleys is reduced, the overall length of the grinding trolley is shortened, the rigid traction rod can ensure that the relative position between the whole trolley and the grinding trolley is stable, and the elastic traction rod can adapt to the transverse offset between the whole trolley and the trolley on a curve;
(3) according to the rail grinding trolley, the two grinding trolleys are connected in a hinged mode, wheel sets in the middle positions of the two grinding trolleys can be reduced, the requirement on installation space is greatly reduced, the rail grinding trolley is suitable for a harsher turning radius, and meanwhile, the rail grinding trolley is favorable for the layout of grinding trolley models in a multi-power driving mode;
(4) the rail grinding trolley can independently control the posture of the grinding motor, realizes a multi-position layout structure of the grinding units, has large grinding angle coverage, flexible combination, clear function division, more centralized grinding heads and easy realization of operation point control, and is more favorable for the whole vehicle design and the layout of multi-power driving modes.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the invention, from which other embodiments can be derived by a person skilled in the art without inventive effort.
FIG. 1 is a front elevational view in schematic form of one embodiment of the rail grinding cart of the present invention;
FIG. 2 is a schematic side view of the structure of one embodiment of the rail grinding cart of the present invention;
FIG. 3 is a top plan view of a schematic configuration of one embodiment of the rail grinding cart of the present invention;
FIG. 4 is a partially enlarged schematic view of a portion I of FIG. 3;
FIG. 5 is a schematic view of a portion of the structure of FIG. 1;
FIG. 6 is a schematic view of a grinding unit layout according to one embodiment of the rail grinding wagon of the present invention;
FIG. 7 is a schematic view of an installation structure of a rail grinding wagon according to an embodiment of the present invention on a subway rail grinding wagon;
FIG. 8 is a schematic view of a dust collector arrangement of one embodiment of the rail grinding wagon of the present invention;
FIG. 9 is an enlarged schematic view of a portion of a grinding unit in one embodiment of the rail grinding wagon of the present invention;
FIGS. 10 and 11 are schematic views showing the deflection angles of the special grinding units in one embodiment of the rail grinding wagon of the present invention;
figures 12 and 13 are schematic illustrations of the deflection angle of a conventional grinding unit in one embodiment of the rail grinding wagon of the present invention;
FIG. 14 is an enlarged, fragmentary, schematic structural view of another embodiment of the rail grinding wagon of the present invention;
FIG. 15 is a front view of an in-orbit detection apparatus layout structure of a rail grinding wagon according to an embodiment of the present invention;
FIG. 16 is a side view of the layout structure of an on-track inspection device of one embodiment of the rail grinding wagon of the present invention;
FIG. 17 is a side view of an in-orbit detection apparatus in accordance with another embodiment of the present invention;
FIG. 18 is a top view of an off-track detection device layout configuration for a rail grinding cart in accordance with an embodiment of the present invention;
FIG. 19 is a top view of an off-track inspection device layout configuration for another embodiment of a rail grinding wagon according to the present invention;
FIG. 20 is a top view of a layout structure of an off-track detection device of a third embodiment of the rail grinding wagon of the present invention;
in the figure: 1-carriage, 2-grinding unit, 3-running guide wheels, 4-dust collecting channel, 5-lifting mechanism, 6-elastic traction rod, 7-anticreep chain, 8-fireproof and dustproof device, 9-derailment protection bracket, 10-first grinding carriage, 11-compensator, 12-rigid traction rod, 13-hinged seat, 14-hinged joint, 15-bolt, 16-joint bearing, 17-common grinding unit, 18-special grinding unit, 19-deflection mechanism, 20-second grinding carriage, 21-deflection pin shaft, 22-carriage floor, 23-steel rail, 24-dust removing system, 25-pressing mechanism, 26-grinding motor, 27-guide post upper connecting seat, 28-guide sleeve, 29-guide post, 30-grinding unit frame, 31-grinding framework, 32-hanging frame, 33-air cylinder, 34-hanging hook, 35-hanging lug, 36-on-rail detection device, 37-off-rail detection device, 38-guide wheel mounting frame, 100-rail grinding trolley, 200-vehicle body and 300-subway rail grinding wagon.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention. It is to be understood that the described embodiments are merely a few embodiments of the invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring now to fig. 1 to 20, there are shown embodiments of the rail grinding wagon of the present invention, and the present invention will be further described with reference to the drawings and embodiments.
Example 1
As shown in fig. 7, an embodiment of a rail grinding wagon 100 is disposed at a lower portion of a wagon body 200 of a subway rail grinding wagon 300, and the rail grinding wagon 100 specifically includes: the grinding device comprises a first grinding trolley 10 and a second grinding trolley 20, wherein the first grinding trolley 10 is hinged with the second grinding trolley 20. As an exemplary embodiment of the present invention, as shown in fig. 4, the first grinding wagon 10 and the second grinding wagon 20 are hinged to each other through the hinge base 13 and the hinge head 14. The articulated seat 13 is connected with the articulated head 14 through a bolt 15, and a joint bearing 16 is arranged between the bolt 15 and the articulated head 14. As shown in fig. 1 to 3, each of the first and second sanding carriages 10 and 20 includes: the frame 1, the polishing unit 2, the walking guide wheel 3, the dust collecting channel 4, the lifting mechanism 5 and the fireproof and dustproof device 8. The grinding unit 2 is arranged in the frame 1, the walking guide wheels 3 are arranged at the lower part of the frame 1, and the dust collecting channel 4 is arranged at the upper part of the frame 1. The lifting mechanisms 5 are provided on both sides of the frame 1 in the lateral direction (the direction W shown in fig. 2), and one end of the lifting mechanism 5 is connected to the frame 1 and the other end is connected to the lower portion of the vehicle body 200. The fireproof and dustproof device 8 is coated outside the frame 1 except the bottom, and a semi-closed structure of the first grinding trolley 10 and the second grinding trolley 20 is formed through the fireproof and dustproof device 8 and the dust collecting channel 4. The rail grinding wagon 100 further comprises an elastic traction rod 6 and a rigid traction rod 12, the first grinding wagon 10 is connected with the wagon body 200 through the elastic traction rod 6, the second grinding wagon 20 is connected with the wagon body 200 through the rigid traction rod 12, and the rail grinding wagon 100 is drawn through the elastic traction rod 6 and the rigid traction rod 12. As another exemplary embodiment of the present invention, the first sanding carriage 10 is connected to the vehicle body 200 by a rigid drawbar 12 and the second sanding carriage 20 is connected to the vehicle body 200 by a resilient drawbar 6. The rail grinding trolley 100 described in the specific embodiment of the invention adopts a modular structural design, has a very simple structure, is attractive and elegant in appearance, and can be well suitable for grinding the rails of the subway track line.
Compared with a national railway line, the limitation and the minimum turning radius of the subway line are more strict, so that the distance between two bogies of the subway steel rail grinding wagon is small, and a plurality of grinding trolleys are difficult to hold. The existing subway steel rail grinding wagon is provided with two sections of vehicles, the lower part of each section of vehicle is provided with one grinding trolley in a hanging mode, namely the two grinding trolleys are respectively hung at the lower parts of the two sections of vehicles, so that the whole wagon structure design and the vehicle layout of multi-power driving mode type wagons are facilitated. In order to hang two grinding trolleys at the lower part of the same vehicle and furthest compress the occupied space of the two grinding trolleys, the specific embodiment of the invention adopts a mode that the two grinding trolleys are hinged and connected, thus reducing wheel pairs at the middle positions of the two grinding trolleys and sharing a group of bearing wheel pairs at the middle of the two grinding trolleys. The two sections of grinding trolleys are hinged and then connected with a vehicle as a whole through a front traction rod and a rear traction rod to be drawn, wherein one end of each grinding trolley is an elastic traction rod 6, and the other end of each grinding trolley is a rigid traction rod 12. The resilient traction rods 6 may be spring, other resilient or compressible material to effect a change in length of the traction rods. The elastic traction rod 6 is used for adapting to the transverse deviation working condition between the whole rail grinding wagon (namely the subway rail grinding wagon 300) and the rail grinding wagon 100 on a curve, and the rigid traction rod 12 is used for ensuring the stability of the relative position between the whole rail grinding wagon 100 and the whole rail grinding wagon.
In an exemplary embodiment of the present invention, the frame 1 of the first grinding wagon 10 is provided with a pair of running guide wheels 3 at a lower portion of one side in the longitudinal direction (direction L shown in fig. 1 and 3). The lower parts of the two sides of the frame 1 of the second grinding trolley 20 along the longitudinal direction are respectively provided with a pair of walking guide wheels 3. The frame 1 of the first grinding trolley 10 and the second grinding trolley 20 are respectively provided with a pair of lifting mechanisms 5 along the longitudinal two sides. As shown in fig. 2, a derailing guard 9 is further provided at a lower portion of the frame 1 on the inner side of the guide wheel mounting frame 38. Through the low constant speed control of the subway rail grinding wagon 300, the grinding wheel of the grinding unit 2 forms a certain angle with the rail 23, and the grinding of the rail 23 is formed under the action of the surface pressure and the traction force which are vertical to the rail 23.
According to the rail grinding trolley 100 described in the embodiment of the invention, the first grinding trolley 10 with two traveling guide wheels 3 is connected to the second grinding trolley 20 with four traveling guide wheels 3 through the joint bearing 16, and the well-connected grinding trolley combination (comprising the first grinding trolley 10 and the second grinding trolley 20) is jointly drawn through the elastic traction rod 6 and the rigid traction rod 12, so that the requirement on installation space is greatly reduced, and the type layout of the subway rail grinding trolley in a multi-power driving mode is facilitated. The rail grinding wagon 100 described in the embodiments of the present invention has the following advantages by concentrating two sections of grinding wagons under one vehicle: 1) the grinding heads of the two grinding trolleys are relatively centralized, so that the accurate control of the falling point is more convenient; 2) the routine inspection and maintenance during operation are convenient; 3) the modularized design of the whole vehicle is facilitated, the operation function and the power function are separated in a modularized mode, the structure of the operation function is completely integrated on one vehicle, and any subsequent vehicle which can provide power and other power can be connected with the vehicle to drive and pull the operation vehicle to operate; 4) the stability of the grinding trolley is greatly improved, and the possibility of derailing of the grinding trolley is greatly reduced.
The rail grinding trolley 100 is divided into two working conditions of hanging transportation and operation, and the conversion of the hanging transportation working conditions and the operation working conditions is realized by lifting and connecting 6 lifting mechanisms 5 of the grinding trolley, so that the rail grinding trolley 100 can move up and down by taking the elastic traction rods 6 and the rigid traction rods 12 as positioning references. When the rail grinding wagon 100 is switched from the operation condition to the hitching condition, the elastic traction rod 6 and the rigid traction rod 12 are used as positioning references to lift the first grinding wagon 10 and the second grinding wagon 20 to the hitching height through the lifting mechanism 5, and then the anti-dropping chain 7 is connected between the bottom of the wagon body 200 and the guide wheel mounting frame 38 of the wagon frame 1 to prevent the first grinding wagon 10 and the second grinding wagon 20 from dropping, as shown in fig. 5. As shown in fig. 14, the bottom of the vehicle body 200 is further provided with a hanger 32, a hook 34 hinged to the hanger 32, and a cylinder 33, one end of the cylinder 33 is connected to the hanger 32, and the other end is hinged to the hook 34. When the rail grinding wagon 100 is in the hanging mode, the first grinding wagon 10 and the second grinding wagon 20 are further prevented from falling off by firmly hanging the hook 34 on the hanging lug 35 of the guide wheel mounting bracket 38.
As shown in fig. 9, the polishing unit 2 further includes a deflecting mechanism 19, a pressing mechanism 25, a polishing motor 26, a guide post upper connecting seat 27, a guide bush 28, a guide post 29 and a polishing unit frame 30. The deflecting mechanism 19 is provided inside the grinding frame 31 of the carriage 1, and the deflecting force of the grinding unit 2 is controlled by hydraulic control. The deflector mechanism 19 is connected at one end to the sharpening frame 31 and at the other end to the sharpening unit frame 30. The sanding unit frame 30 is hinged to the sanding frame 31 by means of a yaw pin 21. The guide post upper connecting seat 27 is arranged at the upper part of the grinding motor 26, a grinding head of the grinding motor 26 penetrates through the grinding unit frame 30, and at least two guide posts 29 are connected between the guide post upper connecting seat 27 and the grinding unit frame 30. The guide sleeve 28 is fixed on the outer surface of the grinding motor 26 and sleeved on the guide post 29. The pressing mechanism 25 is provided inside the grinding frame 31, and the pressing mechanism 25 realizes the control of the pressing force and the lifting force of the grinding unit 2 by hydraulic control. One end of the pressing mechanism 25 is connected to the guide post upper connecting seat 27 or the polishing unit holder 30, and the other end is connected to the polishing motor 26. As a preferred embodiment of the present invention, the lifting mechanism 5 further employs a lifting cylinder, the deflecting mechanism 19 further employs a deflecting cylinder, and the pressing mechanism 25 further employs a pressing cylinder.
The existing rail grinding trolley has the advantages that the grinding unit is of a structure that two grinding motors 26 share the same grinding unit frame (namely a deflection cradle), 16 grinding heads are arranged on a row of grinding trolley, 8 grinding heads grind a rail, and 2 grinding heads share the same deflection mechanism, so that the rail grinding can only form the combination of 4 grinding angles once, and the whole rail profile generally needs 10-20-degree combination to realize the better grinding effect. The rail grinding trolley 100 described in the embodiment of the invention adopts the grinding unit 2 with a single grinding head, the angle selection and combination modes are flexible, and the grinding light band with 8 angles is realized once by arranging an independent deflection mechanism for each grinding head, so that the grinding efficiency and the grinding quality are greatly improved.
As shown in fig. 6, the rail grinding wagon 100 may further employ a 4-wheeler, 8-wheeler, 10-wheeler, or 12-wheeler grinding unit 2. The grinding unit 2 further includes a general grinding unit 17 and a special grinding unit 18, and the general grinding unit 17 and the special grinding unit 18 are symmetrically arranged in pairs on both sides of the grinding frame 31 in a direction perpendicular to the running direction of the subway rail grinding wagon 300 (the direction indicated by W in fig. 6). The spacing B between the special sharpening units 18 symmetrically arranged in pairs is greater than the spacing a between the ordinary sharpening units 17 symmetrically arranged in pairs. The polishing units 2 in the polishing trolley are arranged at different positions, the common polishing units 17 with the left transverse spacing and the right transverse spacing of A can perform common maintenance polishing, and the special polishing units 18 with the left transverse spacing and the right transverse spacing of B can meet the requirement of large-angle polishing.
The existing steel rail grinding trolley has two types, one type is that a fixed number of rail top grinding units and a fixed number of rail side grinding units are arranged on the grinding trolley, and the matching number of the two grinding units cannot be changed after the processing is finished. The rail top grinding unit and the rail side grinding unit are different in transverse distance between the two units on the two steel rails, so that other facilities outside the steel rails cannot be ground after the grinding units deflect. In the actual use process, only one grinding unit is used most of the time, and great waste exists. The other type is a grinding trolley with grinding units with a transverse moving function, and each unit can realize stepless switching between rail top grinding and rail side grinding at any time. However, the transverse moving mechanism of the grinding unit is complex, high in maintenance requirement and poor in reliability.
As shown in fig. 10 and 11, the deflection angle of the conventional grinding unit 17 further ranges from 35 degrees toward the outside of the rail 23 to 30 degrees toward the inside of the rail 23.
As shown in fig. 12 and 13, the deflection angle of the special grinding unit 18 further ranges from 0 degrees toward the inside of the rail 23 to 70 degrees toward the inside of the rail 23.
In consideration of the fact that different numbers of grinding units may be required to match different user requirements and different line conditions, the rail grinding wagon 100 according to the embodiment of the present invention is provided with two mounting interfaces for the grinding units 2 at the same time at the position of each grinding unit 2 on the carriage 1. The user can will polish unit 2 and install the switching on two kinds of interfaces as required to realize two kinds of arbitrary quantity matching of polishing unit 2, thereby make every polishing unit 2 all be in operating condition, thereby promoted the efficiency of polishing greatly. Simultaneously, the polishing to the different positions of rail is carried out the combination and is arranged, through the horizontal position of adjustment unit 2 of polishing for the function division of unit 2 of polishing is more clear and definite, replaces complicated changeable sideslip mechanism control mode with simplest structure combination form, has greatly reduced the fault rate and the control degree of difficulty of the dolly of polishing, can obtain the rail profile effect of polishing on a large scale. At the same time, conditional switch grinding can be carried out by appropriate arrangement and application of the grinding units.
Example 2
As shown in fig. 1 and 7, an embodiment of a subway rail grinding wagon 300 including the rail grinding wagon 100 according to embodiment 1 specifically includes: a car body 200 and a rail grinding trolley 100 arranged at the lower part of the car body 200. The rail grinding wagon 100 includes a first grinding wagon 10 and a second grinding wagon 20 which are hinged to each other. The rail grinding wagon 100 further comprises an elastic traction rod 6 and a rigid traction rod 12, the first grinding wagon 10 is connected with the wagon body 200 through the elastic traction rod 6, and the second grinding wagon 20 is connected with the wagon body 200 through the rigid traction rod 12. As another exemplary embodiment of the present invention, the first sanding carriage 10 is connected to the vehicle body 200 by a rigid drawbar 12 and the second sanding carriage 20 is connected to the vehicle body 200 by a resilient drawbar 6.
As shown in fig. 8, a dust removing system 24 is further provided on the floor 22 of the carriage inside the body 200 of the subway rail grinding wagon 300, and the dust removing system 24 is connected to the dust collecting passage 4 through the compensator 11. The compensator 11 is used to compensate for the desired position of the grinding carriage movement and is also the only path for the dust removal system 24 to extract grinding dust. The dolly of polishing is rationally sealed by collection dirt passageway 4 and fire prevention dust keeper 8 to link to each other with dust pelletizing system 24 through special compensator 11, compensator 11 can play the effect of compensation rail dolly 100 required position of polishing motion, and the only passageway of dust pelletizing system 24 extraction grinding dust simultaneously as, the whole sealed effectual can fully exert dust pelletizing system 24's dust collection performance. Two dust collecting channels 4 are arranged above the rail grinding trolley 100, door plates and fireproof cloth structures are arranged around the trolley, and except that a small gap is reserved between the fireproof cloth and the ground, sealing structures are formed at other parts, so that more reliable sealing and dust prevention can be realized. The dust-proof sealing structure of the rail grinding wagon 100 described in the embodiment of the present invention has the following advantages: 1) the high-temperature grinding dust leakage can be prevented, the pollution to the atmosphere is reduced, and the burning loss of impurities on the railway side is reduced; 2) under the convulsions effect of collection dirt passageway 4, get into a large amount of cold air through the clearance between flameproof fabric and the ground, the cold air can directly cool off emery wheel, rail, grinding motor etc. has effectively prevented grinding motor's overtemperature condition, has improved the quality of polished surface.
As shown in fig. 15, 16 and 17, the subway rail grinding wagon 300 further includes an on-rail detection device 36 disposed on the guide wheel mounting frame 38, and the on-rail detection device 36 is located at the front upper part or the rear upper part of the running guide wheel 3 along the running direction. The on-rail detection device 36 can detect the rail 23 when the running guide wheels 3 run normally on the rail 23. When the running guide wheels 3 fall off, the on-rail detection device 36 cannot detect the steel rail 23.
As shown in fig. 18, the metro rail grinding wagon 300 further includes an off-rail detection device 37 disposed on the guide wheel mounting frame 38, and the off-rail detection device 37 is simultaneously located on the inner and outer sides of all the running guide wheels 3. When the travel guide wheels 3 normally travel on the rails 23, the off-rail detection device 37 cannot detect the rails 23. When the running guide wheels 3 fall off the track, the rail 23 can not be detected by the on-track detection device 37.
As shown in fig. 19, the metro rail grinding wagon 300 further includes an off-rail detection device 37 disposed on the guide wheel mounting bracket 38, and the off-rail detection device 37 is simultaneously located inside all the running guide wheels 3. When the travel guide wheels 3 normally travel on the rails 23, the off-rail detection device 37 cannot detect the rails 23. When the running guide wheels 3 fall off the track, the rail 23 can not be detected by the on-track detection device 37.
As shown in fig. 20, the metro rail grinding wagon 300 further includes an off-rail detection device 37 disposed on the guide wheel mounting frame 38, and the off-rail detection device 37 is simultaneously located outside all the running guide wheels 3. When the travel guide wheels 3 normally travel on the rails 23, the off-rail detection device 37 cannot detect the rails 23. When the running guide wheels 3 fall off the track, the rail 23 can not be detected by the on-track detection device 37.
The subway steel rail grinding wagon 300 described in embodiment 2, adopts the mode of combining on-track detection and off-track detection to improve the accuracy of the grinding wagon off-track detection, and greatly improves the reliability of detection. The rail detection detects whether the steel rail 23 is below the walking guide wheel 3 by installing a rail detection device (sensor) 36 in the front upper part or the rear upper part of the walking guide wheel 3 of the grinding trolley, if the rail detection device 36 loses signals, the grinding trolley is not on the steel rail 23, the rail is fallen, and the grinding trolley needs to be braked emergently and lifted. However, if only the on-track detection device 36 is used, false alarm signals often occur due to the limited sensing distance of the sensor, and the reliability is poor. Therefore, in embodiment 2, the off-rail detection device 37 is further added on the basis of the rail detection device 36, and the off-rail detection device 37 cannot detect an abnormal signal in normal operation, but when the grinding carriage falls off the track, the off-rail detection device 37 can sense the steel rail 23, so that the abnormal signal is detected.
The specific embodiment of the invention comprehensively considers the defects of the prior rail grinding trolley, and provides a novel rail grinding trolley 100 which can meet the grinding requirement of a subway main line and can carry out turnout grinding conditionally. The rail grinding trolley 100 adopts the universal traveling guide wheel 3, has small size, simple disassembly and assembly and attractive and elegant appearance. Meanwhile, each polishing motor 26 corresponds to one polishing unit 2, can independently lift and deflect, independently controls the posture of each polishing motor 26, is large in polishing angle range, is flexible in polishing angle setting, and is beneficial to organizing complex polishing strategies. Two sections of grinding trolleys are connected and hung, and an elastic traction rod 6 and a rigid traction rod 12 are adopted to jointly guide the running of the grinding trolleys, so that the total length of the steel rail grinding trolley 100 is shortened, the whole trolley design and the result layout of a multi-power driving mode are facilitated, the grinding head of the grinding motor 26 is more concentrated, the operation drop point control is easier to realize, and the multi-position arrangement structure of the grinding unit 2 ensures that the function division of the grinding unit 2 is more definite, the grinding angle coverage is wider, and the grinding function is stronger. Through the application of the grinding head driven by the grinding motor 26, the hidden trouble generated in the use of high-pressure hydraulic pressure is solved. The rail grinding trolley 100 is wholly sealed, good in sealing performance and high in dust collection rate, and is suitable for grinding operation of lines such as subways and city railways which have high requirements on environmental protection.
By implementing the technical scheme of the steel rail grinding trolley described in the specific embodiment of the invention, the following technical effects can be achieved:
(1) the steel rail polishing trolley described in the specific embodiment of the invention can meet the polishing requirement of the subway main line, can conditionally polish turnouts, greatly expands application occasions, and has good operation stability and better polishing quality and effect;
(2) according to the steel rail polishing trolley described in the specific embodiment of the invention, a rigid traction rod and an elastic traction rod are adopted to jointly guide the polishing trolley to run, so that the occupied space of two sections of trolleys is reduced, the overall length of the polishing trolley is shortened, the rigid traction rod can ensure that the relative position between the whole trolley and the polishing trolley is stable, and the elastic traction rod can adapt to the transverse offset between the whole trolley and the trolley on a curve;
(3) according to the steel rail polishing trolley described in the specific embodiment of the invention, the two polishing trolleys are connected in a hinged manner, so that wheel pairs in the middle positions of the two polishing trolleys can be reduced, the requirement on installation space is greatly reduced, the steel rail polishing trolley is suitable for a severer turning radius, and meanwhile, the steel rail polishing trolley is also beneficial to the layout of polishing trolley models in a multi-power driving manner;
(4) the steel rail grinding trolley described in the specific embodiment of the invention can independently control the posture of the grinding motor, realizes a multi-position layout structure of the grinding unit, has the advantages of large grinding angle coverage, flexible combination, clear function division, more centralized grinding heads, easy realization of operation point control, and is more beneficial to the whole vehicle design and the layout of a multi-power driving mode.
The embodiments are described in a progressive manner in the specification, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
The foregoing is merely a preferred embodiment of the invention and is not intended to limit the invention in any manner. Although the present invention has been described with reference to the preferred embodiments, it is not intended to be limited thereto. Those skilled in the art can make many possible variations and modifications to the disclosed embodiments, or equivalent modifications, without departing from the spirit and scope of the invention, using the methods and techniques disclosed above. Therefore, any simple modification, equivalent replacement, equivalent change and modification made to the above embodiments according to the technical essence of the present invention are still within the protection scope of the technical solution of the present invention.
Claims (10)
1. A rail grinding trolley is characterized in that the rail grinding trolley (100) is mounted on the lower portion of a trolley body (200) of a subway rail grinding trolley (300) through a lifting mechanism (5) and comprises two grinding trolleys which are hinged; the dolly of polishing includes: the device comprises a frame (1), a polishing unit (2), a traveling guide wheel (3), a dust collecting channel (4) and a fireproof and dustproof device (8); the grinding unit (2) is arranged in the frame (1), the walking guide wheels (3) are arranged at the lower part of the frame (1), and the dust collecting channel (4) is arranged at the upper part of the frame (1); the fireproof and dustproof device (8) is coated outside the frame (1) except the bottom, and a semi-closed structure of the polishing trolley is formed through the fireproof and dustproof device (8) and the dust collection channel (4); the rail grinding trolley (100) further comprises an elastic traction rod (6) and a rigid traction rod (12), one grinding trolley is connected with the trolley body (200) through the elastic traction rod (6), the other grinding trolley is connected with the trolley body (200) through the rigid traction rod (12), and the rail grinding trolley (100) is pulled through the elastic traction rod (6) and the rigid traction rod (12).
2. The rail grinding wagon of claim 1, wherein: the rail grinding trolley (100) comprises a first grinding trolley (10) and a second grinding trolley (20); a pair of walking guide wheels (3) is arranged at the lower part of one side of the frame (1) of the first grinding trolley (10) along the longitudinal direction; and the lower parts of the two sides of the frame (1) of the second grinding trolley (20) along the longitudinal direction are respectively provided with a pair of walking guide wheels (3).
3. A rail grinding wagon according to claim 1 or 2, wherein: the four lifting mechanisms (5) are arranged on the longitudinal two sides of the frame (1) in pairs and connected between the lower part of the vehicle body (200) and the frame (1), and the lifting mechanisms (5) are simultaneously positioned on the transverse two sides of the frame (1).
4. A rail grinding wagon as defined in claim 3 wherein: the lower part of the guide wheel mounting rack (38) close to the inner side of the frame (1) is provided with a derailing protection rack (9).
5. A rail grinding wagon as defined in claim 1, 2 or 4, wherein: through low constant speed control of the subway steel rail grinding wagon (300), a grinding wheel of the grinding unit (2) forms a certain angle with the steel rail (23), and grinding of the steel rail (23) is formed under the action of pressure and traction force vertical to the surface of the steel rail (23); the rail grinding trolley (100) further comprises a deflection mechanism (19) and a pressing mechanism (25), wherein the deflection mechanism (19) is arranged inside a grinding framework (31) of the trolley frame (1), and deflection force control of the grinding unit (2) is realized through hydraulic control; the pressing mechanism (25) is arranged inside the grinding framework (31), and the pressing mechanism (25) controls the pressing force and the lifting force of the grinding unit (2) through hydraulic control.
6. The rail grinding wagon of claim 5, wherein: the polishing unit (2) further comprises a polishing motor (26), a guide post upper connecting seat (27), a guide sleeve (28), a guide post (29) and a polishing unit frame (30); one end of the deflection mechanism (19) is connected with the grinding framework (31), and the other end of the deflection mechanism is connected to the grinding unit frame (30); the polishing unit frame (30) is hinged with the polishing framework (31) through a deflection pin shaft (21); the guide post upper connecting seat (27) is arranged at the upper part of the polishing motor (26), a grinding head of the polishing motor (26) penetrates through the polishing unit frame (30), and at least two guide posts (29) are connected between the guide post upper connecting seat (27) and the polishing unit frame (30); the guide sleeve (28) is fixed on the outer surface of the polishing motor (26) and sleeved on the guide post (29); one end of the pressing mechanism (25) is connected with the guide post upper connecting seat (27) or the polishing unit frame (30), and the other end is connected with the polishing motor (26).
7. The rail grinding wagon of claim 6, wherein: the rail grinding trolley (100) adopts a 4-grinding head, an 8-grinding head, a 10-grinding head or a 12-grinding head grinding unit (2).
8. A rail grinding wagon according to claim 6 or 7, wherein: the grinding unit (2) further comprises a common grinding unit (17) and a special grinding unit (18), wherein the common grinding unit (17) and the special grinding unit (18) are symmetrically arranged on two sides of the grinding framework (31) along the running direction perpendicular to the subway steel rail grinding wagon (300) in pairs; the distance (B) between the special grinding units (18) arranged symmetrically in pairs is greater than the distance (A) between the ordinary grinding units (17) arranged symmetrically in pairs.
9. The rail grinding wagon of claim 8, wherein: the deflection angle range of the common grinding unit (17) is 35 degrees towards the outer side of the steel rail (23) to 30 degrees towards the inner side of the steel rail (23).
10. The rail grinding wagon of claim 8, wherein: the deflection angle range of the special grinding unit (18) is 0 degrees towards the inner side of the steel rail (23) to 70 degrees towards the inner side of the steel rail (23).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010067159.0A CN111235982A (en) | 2020-01-20 | 2020-01-20 | Rail dolly of polishing |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010067159.0A CN111235982A (en) | 2020-01-20 | 2020-01-20 | Rail dolly of polishing |
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| CN111235982A true CN111235982A (en) | 2020-06-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202010067159.0A Pending CN111235982A (en) | 2020-01-20 | 2020-01-20 | Rail dolly of polishing |
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| CN111622031A (en) * | 2020-06-30 | 2020-09-04 | 株洲时代电子技术有限公司 | Fireproof and dustproof device of polishing trolley |
| CN111648177A (en) * | 2020-06-30 | 2020-09-11 | 株洲时代电子技术有限公司 | Rail leaning device of polishing trolley and operation method thereof |
| CN111926636A (en) * | 2020-06-30 | 2020-11-13 | 株洲时代电子技术有限公司 | Rail dolly fire prevention dust keeper that polishes |
| CN114790669A (en) * | 2022-04-21 | 2022-07-26 | 北京同和时代轨道科技有限公司 | Curved surface grinding wagon with double-shaft bogie |
| CN116905295A (en) * | 2023-07-26 | 2023-10-20 | 湖北铂金斯工业技术有限公司 | Polishing dust collector |
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| CN114790669A (en) * | 2022-04-21 | 2022-07-26 | 北京同和时代轨道科技有限公司 | Curved surface grinding wagon with double-shaft bogie |
| CN116905295A (en) * | 2023-07-26 | 2023-10-20 | 湖北铂金斯工业技术有限公司 | Polishing dust collector |
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